2 * linux/drivers/video/omap2/dss/dsi.c
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #define DSS_SUBSYS_NAME "DSI"
22 #include <linux/kernel.h>
24 #include <linux/clk.h>
25 #include <linux/device.h>
26 #include <linux/err.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/mutex.h>
30 #include <linux/module.h>
31 #include <linux/semaphore.h>
32 #include <linux/seq_file.h>
33 #include <linux/platform_device.h>
34 #include <linux/regulator/consumer.h>
35 #include <linux/wait.h>
36 #include <linux/workqueue.h>
37 #include <linux/sched.h>
38 #include <linux/slab.h>
39 #include <linux/debugfs.h>
40 #include <linux/pm_runtime.h>
42 #include <video/omapdss.h>
43 #include <video/mipi_display.h>
46 #include "dss_features.h"
48 #define DSI_CATCH_MISSING_TE
50 struct dsi_reg { u16 idx; };
52 #define DSI_REG(idx) ((const struct dsi_reg) { idx })
54 #define DSI_SZ_REGS SZ_1K
55 /* DSI Protocol Engine */
57 #define DSI_REVISION DSI_REG(0x0000)
58 #define DSI_SYSCONFIG DSI_REG(0x0010)
59 #define DSI_SYSSTATUS DSI_REG(0x0014)
60 #define DSI_IRQSTATUS DSI_REG(0x0018)
61 #define DSI_IRQENABLE DSI_REG(0x001C)
62 #define DSI_CTRL DSI_REG(0x0040)
63 #define DSI_GNQ DSI_REG(0x0044)
64 #define DSI_COMPLEXIO_CFG1 DSI_REG(0x0048)
65 #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(0x004C)
66 #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(0x0050)
67 #define DSI_CLK_CTRL DSI_REG(0x0054)
68 #define DSI_TIMING1 DSI_REG(0x0058)
69 #define DSI_TIMING2 DSI_REG(0x005C)
70 #define DSI_VM_TIMING1 DSI_REG(0x0060)
71 #define DSI_VM_TIMING2 DSI_REG(0x0064)
72 #define DSI_VM_TIMING3 DSI_REG(0x0068)
73 #define DSI_CLK_TIMING DSI_REG(0x006C)
74 #define DSI_TX_FIFO_VC_SIZE DSI_REG(0x0070)
75 #define DSI_RX_FIFO_VC_SIZE DSI_REG(0x0074)
76 #define DSI_COMPLEXIO_CFG2 DSI_REG(0x0078)
77 #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(0x007C)
78 #define DSI_VM_TIMING4 DSI_REG(0x0080)
79 #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(0x0084)
80 #define DSI_VM_TIMING5 DSI_REG(0x0088)
81 #define DSI_VM_TIMING6 DSI_REG(0x008C)
82 #define DSI_VM_TIMING7 DSI_REG(0x0090)
83 #define DSI_STOPCLK_TIMING DSI_REG(0x0094)
84 #define DSI_VC_CTRL(n) DSI_REG(0x0100 + (n * 0x20))
85 #define DSI_VC_TE(n) DSI_REG(0x0104 + (n * 0x20))
86 #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(0x0108 + (n * 0x20))
87 #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(0x010C + (n * 0x20))
88 #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(0x0110 + (n * 0x20))
89 #define DSI_VC_IRQSTATUS(n) DSI_REG(0x0118 + (n * 0x20))
90 #define DSI_VC_IRQENABLE(n) DSI_REG(0x011C + (n * 0x20))
94 #define DSI_DSIPHY_CFG0 DSI_REG(0x200 + 0x0000)
95 #define DSI_DSIPHY_CFG1 DSI_REG(0x200 + 0x0004)
96 #define DSI_DSIPHY_CFG2 DSI_REG(0x200 + 0x0008)
97 #define DSI_DSIPHY_CFG5 DSI_REG(0x200 + 0x0014)
98 #define DSI_DSIPHY_CFG10 DSI_REG(0x200 + 0x0028)
100 /* DSI_PLL_CTRL_SCP */
102 #define DSI_PLL_CONTROL DSI_REG(0x300 + 0x0000)
103 #define DSI_PLL_STATUS DSI_REG(0x300 + 0x0004)
104 #define DSI_PLL_GO DSI_REG(0x300 + 0x0008)
105 #define DSI_PLL_CONFIGURATION1 DSI_REG(0x300 + 0x000C)
106 #define DSI_PLL_CONFIGURATION2 DSI_REG(0x300 + 0x0010)
108 #define REG_GET(dsidev, idx, start, end) \
109 FLD_GET(dsi_read_reg(dsidev, idx), start, end)
111 #define REG_FLD_MOD(dsidev, idx, val, start, end) \
112 dsi_write_reg(dsidev, idx, FLD_MOD(dsi_read_reg(dsidev, idx), val, start, end))
114 /* Global interrupts */
115 #define DSI_IRQ_VC0 (1 << 0)
116 #define DSI_IRQ_VC1 (1 << 1)
117 #define DSI_IRQ_VC2 (1 << 2)
118 #define DSI_IRQ_VC3 (1 << 3)
119 #define DSI_IRQ_WAKEUP (1 << 4)
120 #define DSI_IRQ_RESYNC (1 << 5)
121 #define DSI_IRQ_PLL_LOCK (1 << 7)
122 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
123 #define DSI_IRQ_PLL_RECALL (1 << 9)
124 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
125 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
126 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
127 #define DSI_IRQ_TE_TRIGGER (1 << 16)
128 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
129 #define DSI_IRQ_SYNC_LOST (1 << 18)
130 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
131 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
132 #define DSI_IRQ_ERROR_MASK \
133 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
134 DSI_IRQ_TA_TIMEOUT | DSI_IRQ_SYNC_LOST)
135 #define DSI_IRQ_CHANNEL_MASK 0xf
137 /* Virtual channel interrupts */
138 #define DSI_VC_IRQ_CS (1 << 0)
139 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
140 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
141 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
142 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
143 #define DSI_VC_IRQ_BTA (1 << 5)
144 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
145 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
146 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
147 #define DSI_VC_IRQ_ERROR_MASK \
148 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
149 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
150 DSI_VC_IRQ_FIFO_TX_UDF)
152 /* ComplexIO interrupts */
153 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
154 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
155 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
156 #define DSI_CIO_IRQ_ERRSYNCESC4 (1 << 3)
157 #define DSI_CIO_IRQ_ERRSYNCESC5 (1 << 4)
158 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
159 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
160 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
161 #define DSI_CIO_IRQ_ERRESC4 (1 << 8)
162 #define DSI_CIO_IRQ_ERRESC5 (1 << 9)
163 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
164 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
165 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
166 #define DSI_CIO_IRQ_ERRCONTROL4 (1 << 13)
167 #define DSI_CIO_IRQ_ERRCONTROL5 (1 << 14)
168 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
169 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
170 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
171 #define DSI_CIO_IRQ_STATEULPS4 (1 << 18)
172 #define DSI_CIO_IRQ_STATEULPS5 (1 << 19)
173 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
174 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
175 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
176 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
177 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
178 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
179 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_4 (1 << 26)
180 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_4 (1 << 27)
181 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_5 (1 << 28)
182 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_5 (1 << 29)
183 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
184 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
185 #define DSI_CIO_IRQ_ERROR_MASK \
186 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
187 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRSYNCESC4 | \
188 DSI_CIO_IRQ_ERRSYNCESC5 | \
189 DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
190 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRESC4 | \
191 DSI_CIO_IRQ_ERRESC5 | \
192 DSI_CIO_IRQ_ERRCONTROL1 | DSI_CIO_IRQ_ERRCONTROL2 | \
193 DSI_CIO_IRQ_ERRCONTROL3 | DSI_CIO_IRQ_ERRCONTROL4 | \
194 DSI_CIO_IRQ_ERRCONTROL5 | \
195 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
196 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
197 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3 | \
198 DSI_CIO_IRQ_ERRCONTENTIONLP0_4 | DSI_CIO_IRQ_ERRCONTENTIONLP1_4 | \
199 DSI_CIO_IRQ_ERRCONTENTIONLP0_5 | DSI_CIO_IRQ_ERRCONTENTIONLP1_5)
201 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
203 static int dsi_display_init_dispc(struct platform_device *dsidev,
204 struct omap_overlay_manager *mgr);
205 static void dsi_display_uninit_dispc(struct platform_device *dsidev,
206 struct omap_overlay_manager *mgr);
208 #define DSI_MAX_NR_ISRS 2
209 #define DSI_MAX_NR_LANES 5
211 enum dsi_lane_function {
220 struct dsi_lane_config {
221 enum dsi_lane_function function;
225 struct dsi_isr_data {
233 DSI_FIFO_SIZE_32 = 1,
234 DSI_FIFO_SIZE_64 = 2,
235 DSI_FIFO_SIZE_96 = 3,
236 DSI_FIFO_SIZE_128 = 4,
240 DSI_VC_SOURCE_L4 = 0,
244 struct dsi_irq_stats {
245 unsigned long last_reset;
247 unsigned dsi_irqs[32];
248 unsigned vc_irqs[4][32];
249 unsigned cio_irqs[32];
252 struct dsi_isr_tables {
253 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
254 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
255 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
258 struct dsi_clk_calc_ctx {
259 struct platform_device *dsidev;
263 const struct omap_dss_dsi_config *config;
265 unsigned long req_pck_min, req_pck_nom, req_pck_max;
269 struct dsi_clock_info dsi_cinfo;
270 struct dispc_clock_info dispc_cinfo;
272 struct omap_video_timings dispc_vm;
273 struct omap_dss_dsi_videomode_timings dsi_vm;
277 struct platform_device *pdev;
287 struct dispc_clock_info user_dispc_cinfo;
288 struct dsi_clock_info user_dsi_cinfo;
290 struct dsi_clock_info current_cinfo;
292 bool vdds_dsi_enabled;
293 struct regulator *vdds_dsi_reg;
296 enum dsi_vc_source source;
297 struct omap_dss_device *dssdev;
298 enum fifo_size fifo_size;
303 struct semaphore bus_lock;
308 struct dsi_isr_tables isr_tables;
309 /* space for a copy used by the interrupt handler */
310 struct dsi_isr_tables isr_tables_copy;
314 unsigned update_bytes;
320 void (*framedone_callback)(int, void *);
321 void *framedone_data;
323 struct delayed_work framedone_timeout_work;
325 #ifdef DSI_CATCH_MISSING_TE
326 struct timer_list te_timer;
329 unsigned long cache_req_pck;
330 unsigned long cache_clk_freq;
331 struct dsi_clock_info cache_cinfo;
334 spinlock_t errors_lock;
336 ktime_t perf_setup_time;
337 ktime_t perf_start_time;
342 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
343 spinlock_t irq_stats_lock;
344 struct dsi_irq_stats irq_stats;
346 /* DSI PLL Parameter Ranges */
347 unsigned long regm_max, regn_max;
348 unsigned long regm_dispc_max, regm_dsi_max;
349 unsigned long fint_min, fint_max;
350 unsigned long lpdiv_max;
352 unsigned num_lanes_supported;
353 unsigned line_buffer_size;
355 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
356 unsigned num_lanes_used;
358 unsigned scp_clk_refcount;
360 struct dss_lcd_mgr_config mgr_config;
361 struct omap_video_timings timings;
362 enum omap_dss_dsi_pixel_format pix_fmt;
363 enum omap_dss_dsi_mode mode;
364 struct omap_dss_dsi_videomode_timings vm_timings;
366 struct omap_dss_device output;
369 struct dsi_packet_sent_handler_data {
370 struct platform_device *dsidev;
371 struct completion *completion;
375 static bool dsi_perf;
376 module_param(dsi_perf, bool, 0644);
379 static inline struct dsi_data *dsi_get_dsidrv_data(struct platform_device *dsidev)
381 return dev_get_drvdata(&dsidev->dev);
384 static inline struct platform_device *dsi_get_dsidev_from_dssdev(struct omap_dss_device *dssdev)
386 /* HACK: dssdev can be either the panel device, when using old API, or
387 * the dsi device itself, when using the new API. So we solve this for
388 * now by checking the dssdev->id. This will be removed when the old API
391 if (dssdev->id == OMAP_DSS_OUTPUT_DSI1 ||
392 dssdev->id == OMAP_DSS_OUTPUT_DSI2)
393 return to_platform_device(dssdev->dev);
395 return to_platform_device(dssdev->output->dev);
398 struct platform_device *dsi_get_dsidev_from_id(int module)
400 struct omap_dss_device *out;
401 enum omap_dss_output_id id;
405 id = OMAP_DSS_OUTPUT_DSI1;
408 id = OMAP_DSS_OUTPUT_DSI2;
414 out = omap_dss_get_output(id);
416 return out ? to_platform_device(out->dev) : NULL;
419 static inline void dsi_write_reg(struct platform_device *dsidev,
420 const struct dsi_reg idx, u32 val)
422 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
424 __raw_writel(val, dsi->base + idx.idx);
427 static inline u32 dsi_read_reg(struct platform_device *dsidev,
428 const struct dsi_reg idx)
430 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
432 return __raw_readl(dsi->base + idx.idx);
435 void dsi_bus_lock(struct omap_dss_device *dssdev)
437 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
438 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
440 down(&dsi->bus_lock);
442 EXPORT_SYMBOL(dsi_bus_lock);
444 void dsi_bus_unlock(struct omap_dss_device *dssdev)
446 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
447 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
451 EXPORT_SYMBOL(dsi_bus_unlock);
453 static bool dsi_bus_is_locked(struct platform_device *dsidev)
455 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
457 return dsi->bus_lock.count == 0;
460 static void dsi_completion_handler(void *data, u32 mask)
462 complete((struct completion *)data);
465 static inline int wait_for_bit_change(struct platform_device *dsidev,
466 const struct dsi_reg idx, int bitnum, int value)
468 unsigned long timeout;
472 /* first busyloop to see if the bit changes right away */
475 if (REG_GET(dsidev, idx, bitnum, bitnum) == value)
479 /* then loop for 500ms, sleeping for 1ms in between */
480 timeout = jiffies + msecs_to_jiffies(500);
481 while (time_before(jiffies, timeout)) {
482 if (REG_GET(dsidev, idx, bitnum, bitnum) == value)
485 wait = ns_to_ktime(1000 * 1000);
486 set_current_state(TASK_UNINTERRUPTIBLE);
487 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
493 u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
496 case OMAP_DSS_DSI_FMT_RGB888:
497 case OMAP_DSS_DSI_FMT_RGB666:
499 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
501 case OMAP_DSS_DSI_FMT_RGB565:
510 static void dsi_perf_mark_setup(struct platform_device *dsidev)
512 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
513 dsi->perf_setup_time = ktime_get();
516 static void dsi_perf_mark_start(struct platform_device *dsidev)
518 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
519 dsi->perf_start_time = ktime_get();
522 static void dsi_perf_show(struct platform_device *dsidev, const char *name)
524 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
525 ktime_t t, setup_time, trans_time;
527 u32 setup_us, trans_us, total_us;
534 setup_time = ktime_sub(dsi->perf_start_time, dsi->perf_setup_time);
535 setup_us = (u32)ktime_to_us(setup_time);
539 trans_time = ktime_sub(t, dsi->perf_start_time);
540 trans_us = (u32)ktime_to_us(trans_time);
544 total_us = setup_us + trans_us;
546 total_bytes = dsi->update_bytes;
548 printk(KERN_INFO "DSI(%s): %u us + %u us = %u us (%uHz), "
549 "%u bytes, %u kbytes/sec\n",
554 1000*1000 / total_us,
556 total_bytes * 1000 / total_us);
559 static inline void dsi_perf_mark_setup(struct platform_device *dsidev)
563 static inline void dsi_perf_mark_start(struct platform_device *dsidev)
567 static inline void dsi_perf_show(struct platform_device *dsidev,
573 static int verbose_irq;
575 static void print_irq_status(u32 status)
580 if (!verbose_irq && (status & ~DSI_IRQ_CHANNEL_MASK) == 0)
583 #define PIS(x) (status & DSI_IRQ_##x) ? (#x " ") : ""
585 pr_debug("DSI IRQ: 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
587 verbose_irq ? PIS(VC0) : "",
588 verbose_irq ? PIS(VC1) : "",
589 verbose_irq ? PIS(VC2) : "",
590 verbose_irq ? PIS(VC3) : "",
607 static void print_irq_status_vc(int channel, u32 status)
612 if (!verbose_irq && (status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
615 #define PIS(x) (status & DSI_VC_IRQ_##x) ? (#x " ") : ""
617 pr_debug("DSI VC(%d) IRQ 0x%x: %s%s%s%s%s%s%s%s%s\n",
623 verbose_irq ? PIS(PACKET_SENT) : "",
628 PIS(PP_BUSY_CHANGE));
632 static void print_irq_status_cio(u32 status)
637 #define PIS(x) (status & DSI_CIO_IRQ_##x) ? (#x " ") : ""
639 pr_debug("DSI CIO IRQ 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
653 PIS(ERRCONTENTIONLP0_1),
654 PIS(ERRCONTENTIONLP1_1),
655 PIS(ERRCONTENTIONLP0_2),
656 PIS(ERRCONTENTIONLP1_2),
657 PIS(ERRCONTENTIONLP0_3),
658 PIS(ERRCONTENTIONLP1_3),
659 PIS(ULPSACTIVENOT_ALL0),
660 PIS(ULPSACTIVENOT_ALL1));
664 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
665 static void dsi_collect_irq_stats(struct platform_device *dsidev, u32 irqstatus,
666 u32 *vcstatus, u32 ciostatus)
668 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
671 spin_lock(&dsi->irq_stats_lock);
673 dsi->irq_stats.irq_count++;
674 dss_collect_irq_stats(irqstatus, dsi->irq_stats.dsi_irqs);
676 for (i = 0; i < 4; ++i)
677 dss_collect_irq_stats(vcstatus[i], dsi->irq_stats.vc_irqs[i]);
679 dss_collect_irq_stats(ciostatus, dsi->irq_stats.cio_irqs);
681 spin_unlock(&dsi->irq_stats_lock);
684 #define dsi_collect_irq_stats(dsidev, irqstatus, vcstatus, ciostatus)
687 static int debug_irq;
689 static void dsi_handle_irq_errors(struct platform_device *dsidev, u32 irqstatus,
690 u32 *vcstatus, u32 ciostatus)
692 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
695 if (irqstatus & DSI_IRQ_ERROR_MASK) {
696 DSSERR("DSI error, irqstatus %x\n", irqstatus);
697 print_irq_status(irqstatus);
698 spin_lock(&dsi->errors_lock);
699 dsi->errors |= irqstatus & DSI_IRQ_ERROR_MASK;
700 spin_unlock(&dsi->errors_lock);
701 } else if (debug_irq) {
702 print_irq_status(irqstatus);
705 for (i = 0; i < 4; ++i) {
706 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
707 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
709 print_irq_status_vc(i, vcstatus[i]);
710 } else if (debug_irq) {
711 print_irq_status_vc(i, vcstatus[i]);
715 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
716 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
717 print_irq_status_cio(ciostatus);
718 } else if (debug_irq) {
719 print_irq_status_cio(ciostatus);
723 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
724 unsigned isr_array_size, u32 irqstatus)
726 struct dsi_isr_data *isr_data;
729 for (i = 0; i < isr_array_size; i++) {
730 isr_data = &isr_array[i];
731 if (isr_data->isr && isr_data->mask & irqstatus)
732 isr_data->isr(isr_data->arg, irqstatus);
736 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
737 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
741 dsi_call_isrs(isr_tables->isr_table,
742 ARRAY_SIZE(isr_tables->isr_table),
745 for (i = 0; i < 4; ++i) {
746 if (vcstatus[i] == 0)
748 dsi_call_isrs(isr_tables->isr_table_vc[i],
749 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
754 dsi_call_isrs(isr_tables->isr_table_cio,
755 ARRAY_SIZE(isr_tables->isr_table_cio),
759 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
761 struct platform_device *dsidev;
762 struct dsi_data *dsi;
763 u32 irqstatus, vcstatus[4], ciostatus;
766 dsidev = (struct platform_device *) arg;
767 dsi = dsi_get_dsidrv_data(dsidev);
769 spin_lock(&dsi->irq_lock);
771 irqstatus = dsi_read_reg(dsidev, DSI_IRQSTATUS);
773 /* IRQ is not for us */
775 spin_unlock(&dsi->irq_lock);
779 dsi_write_reg(dsidev, DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
780 /* flush posted write */
781 dsi_read_reg(dsidev, DSI_IRQSTATUS);
783 for (i = 0; i < 4; ++i) {
784 if ((irqstatus & (1 << i)) == 0) {
789 vcstatus[i] = dsi_read_reg(dsidev, DSI_VC_IRQSTATUS(i));
791 dsi_write_reg(dsidev, DSI_VC_IRQSTATUS(i), vcstatus[i]);
792 /* flush posted write */
793 dsi_read_reg(dsidev, DSI_VC_IRQSTATUS(i));
796 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
797 ciostatus = dsi_read_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS);
799 dsi_write_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
800 /* flush posted write */
801 dsi_read_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS);
806 #ifdef DSI_CATCH_MISSING_TE
807 if (irqstatus & DSI_IRQ_TE_TRIGGER)
808 del_timer(&dsi->te_timer);
811 /* make a copy and unlock, so that isrs can unregister
813 memcpy(&dsi->isr_tables_copy, &dsi->isr_tables,
814 sizeof(dsi->isr_tables));
816 spin_unlock(&dsi->irq_lock);
818 dsi_handle_isrs(&dsi->isr_tables_copy, irqstatus, vcstatus, ciostatus);
820 dsi_handle_irq_errors(dsidev, irqstatus, vcstatus, ciostatus);
822 dsi_collect_irq_stats(dsidev, irqstatus, vcstatus, ciostatus);
827 /* dsi->irq_lock has to be locked by the caller */
828 static void _omap_dsi_configure_irqs(struct platform_device *dsidev,
829 struct dsi_isr_data *isr_array,
830 unsigned isr_array_size, u32 default_mask,
831 const struct dsi_reg enable_reg,
832 const struct dsi_reg status_reg)
834 struct dsi_isr_data *isr_data;
841 for (i = 0; i < isr_array_size; i++) {
842 isr_data = &isr_array[i];
844 if (isr_data->isr == NULL)
847 mask |= isr_data->mask;
850 old_mask = dsi_read_reg(dsidev, enable_reg);
851 /* clear the irqstatus for newly enabled irqs */
852 dsi_write_reg(dsidev, status_reg, (mask ^ old_mask) & mask);
853 dsi_write_reg(dsidev, enable_reg, mask);
855 /* flush posted writes */
856 dsi_read_reg(dsidev, enable_reg);
857 dsi_read_reg(dsidev, status_reg);
860 /* dsi->irq_lock has to be locked by the caller */
861 static void _omap_dsi_set_irqs(struct platform_device *dsidev)
863 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
864 u32 mask = DSI_IRQ_ERROR_MASK;
865 #ifdef DSI_CATCH_MISSING_TE
866 mask |= DSI_IRQ_TE_TRIGGER;
868 _omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table,
869 ARRAY_SIZE(dsi->isr_tables.isr_table), mask,
870 DSI_IRQENABLE, DSI_IRQSTATUS);
873 /* dsi->irq_lock has to be locked by the caller */
874 static void _omap_dsi_set_irqs_vc(struct platform_device *dsidev, int vc)
876 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
878 _omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table_vc[vc],
879 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[vc]),
880 DSI_VC_IRQ_ERROR_MASK,
881 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
884 /* dsi->irq_lock has to be locked by the caller */
885 static void _omap_dsi_set_irqs_cio(struct platform_device *dsidev)
887 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
889 _omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table_cio,
890 ARRAY_SIZE(dsi->isr_tables.isr_table_cio),
891 DSI_CIO_IRQ_ERROR_MASK,
892 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
895 static void _dsi_initialize_irq(struct platform_device *dsidev)
897 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
901 spin_lock_irqsave(&dsi->irq_lock, flags);
903 memset(&dsi->isr_tables, 0, sizeof(dsi->isr_tables));
905 _omap_dsi_set_irqs(dsidev);
906 for (vc = 0; vc < 4; ++vc)
907 _omap_dsi_set_irqs_vc(dsidev, vc);
908 _omap_dsi_set_irqs_cio(dsidev);
910 spin_unlock_irqrestore(&dsi->irq_lock, flags);
913 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
914 struct dsi_isr_data *isr_array, unsigned isr_array_size)
916 struct dsi_isr_data *isr_data;
922 /* check for duplicate entry and find a free slot */
924 for (i = 0; i < isr_array_size; i++) {
925 isr_data = &isr_array[i];
927 if (isr_data->isr == isr && isr_data->arg == arg &&
928 isr_data->mask == mask) {
932 if (isr_data->isr == NULL && free_idx == -1)
939 isr_data = &isr_array[free_idx];
942 isr_data->mask = mask;
947 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
948 struct dsi_isr_data *isr_array, unsigned isr_array_size)
950 struct dsi_isr_data *isr_data;
953 for (i = 0; i < isr_array_size; i++) {
954 isr_data = &isr_array[i];
955 if (isr_data->isr != isr || isr_data->arg != arg ||
956 isr_data->mask != mask)
959 isr_data->isr = NULL;
960 isr_data->arg = NULL;
969 static int dsi_register_isr(struct platform_device *dsidev, omap_dsi_isr_t isr,
972 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
976 spin_lock_irqsave(&dsi->irq_lock, flags);
978 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table,
979 ARRAY_SIZE(dsi->isr_tables.isr_table));
982 _omap_dsi_set_irqs(dsidev);
984 spin_unlock_irqrestore(&dsi->irq_lock, flags);
989 static int dsi_unregister_isr(struct platform_device *dsidev,
990 omap_dsi_isr_t isr, void *arg, u32 mask)
992 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
996 spin_lock_irqsave(&dsi->irq_lock, flags);
998 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table,
999 ARRAY_SIZE(dsi->isr_tables.isr_table));
1002 _omap_dsi_set_irqs(dsidev);
1004 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1009 static int dsi_register_isr_vc(struct platform_device *dsidev, int channel,
1010 omap_dsi_isr_t isr, void *arg, u32 mask)
1012 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1013 unsigned long flags;
1016 spin_lock_irqsave(&dsi->irq_lock, flags);
1018 r = _dsi_register_isr(isr, arg, mask,
1019 dsi->isr_tables.isr_table_vc[channel],
1020 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1023 _omap_dsi_set_irqs_vc(dsidev, channel);
1025 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1030 static int dsi_unregister_isr_vc(struct platform_device *dsidev, int channel,
1031 omap_dsi_isr_t isr, void *arg, u32 mask)
1033 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1034 unsigned long flags;
1037 spin_lock_irqsave(&dsi->irq_lock, flags);
1039 r = _dsi_unregister_isr(isr, arg, mask,
1040 dsi->isr_tables.isr_table_vc[channel],
1041 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1044 _omap_dsi_set_irqs_vc(dsidev, channel);
1046 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1051 static int dsi_register_isr_cio(struct platform_device *dsidev,
1052 omap_dsi_isr_t isr, void *arg, u32 mask)
1054 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1055 unsigned long flags;
1058 spin_lock_irqsave(&dsi->irq_lock, flags);
1060 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1061 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1064 _omap_dsi_set_irqs_cio(dsidev);
1066 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1071 static int dsi_unregister_isr_cio(struct platform_device *dsidev,
1072 omap_dsi_isr_t isr, void *arg, u32 mask)
1074 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1075 unsigned long flags;
1078 spin_lock_irqsave(&dsi->irq_lock, flags);
1080 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1081 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1084 _omap_dsi_set_irqs_cio(dsidev);
1086 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1091 static u32 dsi_get_errors(struct platform_device *dsidev)
1093 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1094 unsigned long flags;
1096 spin_lock_irqsave(&dsi->errors_lock, flags);
1099 spin_unlock_irqrestore(&dsi->errors_lock, flags);
1103 int dsi_runtime_get(struct platform_device *dsidev)
1106 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1108 DSSDBG("dsi_runtime_get\n");
1110 r = pm_runtime_get_sync(&dsi->pdev->dev);
1112 return r < 0 ? r : 0;
1115 void dsi_runtime_put(struct platform_device *dsidev)
1117 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1120 DSSDBG("dsi_runtime_put\n");
1122 r = pm_runtime_put_sync(&dsi->pdev->dev);
1123 WARN_ON(r < 0 && r != -ENOSYS);
1126 static int dsi_regulator_init(struct platform_device *dsidev)
1128 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1129 struct regulator *vdds_dsi;
1131 if (dsi->vdds_dsi_reg != NULL)
1134 vdds_dsi = devm_regulator_get(&dsi->pdev->dev, "vdds_dsi");
1136 /* DT HACK: try VCXIO to make omapdss work for o4 sdp/panda */
1137 if (IS_ERR(vdds_dsi))
1138 vdds_dsi = devm_regulator_get(&dsi->pdev->dev, "VCXIO");
1140 if (IS_ERR(vdds_dsi)) {
1141 DSSERR("can't get VDDS_DSI regulator\n");
1142 return PTR_ERR(vdds_dsi);
1145 dsi->vdds_dsi_reg = vdds_dsi;
1150 /* source clock for DSI PLL. this could also be PCLKFREE */
1151 static inline void dsi_enable_pll_clock(struct platform_device *dsidev,
1154 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1157 clk_prepare_enable(dsi->sys_clk);
1159 clk_disable_unprepare(dsi->sys_clk);
1161 if (enable && dsi->pll_locked) {
1162 if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 1, 1) != 1)
1163 DSSERR("cannot lock PLL when enabling clocks\n");
1167 static void _dsi_print_reset_status(struct platform_device *dsidev)
1172 /* A dummy read using the SCP interface to any DSIPHY register is
1173 * required after DSIPHY reset to complete the reset of the DSI complex
1175 l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
1177 if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) {
1187 #define DSI_FLD_GET(fld, start, end)\
1188 FLD_GET(dsi_read_reg(dsidev, DSI_##fld), start, end)
1190 pr_debug("DSI resets: PLL (%d) CIO (%d) PHY (%x%x%x, %d, %d, %d)\n",
1191 DSI_FLD_GET(PLL_STATUS, 0, 0),
1192 DSI_FLD_GET(COMPLEXIO_CFG1, 29, 29),
1193 DSI_FLD_GET(DSIPHY_CFG5, b0, b0),
1194 DSI_FLD_GET(DSIPHY_CFG5, b1, b1),
1195 DSI_FLD_GET(DSIPHY_CFG5, b2, b2),
1196 DSI_FLD_GET(DSIPHY_CFG5, 29, 29),
1197 DSI_FLD_GET(DSIPHY_CFG5, 30, 30),
1198 DSI_FLD_GET(DSIPHY_CFG5, 31, 31));
1203 static inline int dsi_if_enable(struct platform_device *dsidev, bool enable)
1205 DSSDBG("dsi_if_enable(%d)\n", enable);
1207 enable = enable ? 1 : 0;
1208 REG_FLD_MOD(dsidev, DSI_CTRL, enable, 0, 0); /* IF_EN */
1210 if (wait_for_bit_change(dsidev, DSI_CTRL, 0, enable) != enable) {
1211 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
1218 unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev)
1220 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1222 return dsi->current_cinfo.dsi_pll_hsdiv_dispc_clk;
1225 static unsigned long dsi_get_pll_hsdiv_dsi_rate(struct platform_device *dsidev)
1227 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1229 return dsi->current_cinfo.dsi_pll_hsdiv_dsi_clk;
1232 static unsigned long dsi_get_txbyteclkhs(struct platform_device *dsidev)
1234 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1236 return dsi->current_cinfo.clkin4ddr / 16;
1239 static unsigned long dsi_fclk_rate(struct platform_device *dsidev)
1242 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1244 if (dss_get_dsi_clk_source(dsi->module_id) == OMAP_DSS_CLK_SRC_FCK) {
1245 /* DSI FCLK source is DSS_CLK_FCK */
1246 r = clk_get_rate(dsi->dss_clk);
1248 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1249 r = dsi_get_pll_hsdiv_dsi_rate(dsidev);
1255 static int dsi_lp_clock_calc(struct dsi_clock_info *cinfo,
1256 unsigned long lp_clk_min, unsigned long lp_clk_max)
1258 unsigned long dsi_fclk = cinfo->dsi_pll_hsdiv_dsi_clk;
1259 unsigned lp_clk_div;
1260 unsigned long lp_clk;
1262 lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk_max * 2);
1263 lp_clk = dsi_fclk / 2 / lp_clk_div;
1265 if (lp_clk < lp_clk_min || lp_clk > lp_clk_max)
1268 cinfo->lp_clk_div = lp_clk_div;
1269 cinfo->lp_clk = lp_clk;
1274 static int dsi_set_lp_clk_divisor(struct platform_device *dsidev)
1276 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1277 unsigned long dsi_fclk;
1278 unsigned lp_clk_div;
1279 unsigned long lp_clk;
1281 lp_clk_div = dsi->user_dsi_cinfo.lp_clk_div;
1283 if (lp_clk_div == 0 || lp_clk_div > dsi->lpdiv_max)
1286 dsi_fclk = dsi_fclk_rate(dsidev);
1288 lp_clk = dsi_fclk / 2 / lp_clk_div;
1290 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1291 dsi->current_cinfo.lp_clk = lp_clk;
1292 dsi->current_cinfo.lp_clk_div = lp_clk_div;
1294 /* LP_CLK_DIVISOR */
1295 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, lp_clk_div, 12, 0);
1297 /* LP_RX_SYNCHRO_ENABLE */
1298 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0, 21, 21);
1303 static void dsi_enable_scp_clk(struct platform_device *dsidev)
1305 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1307 if (dsi->scp_clk_refcount++ == 0)
1308 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */
1311 static void dsi_disable_scp_clk(struct platform_device *dsidev)
1313 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1315 WARN_ON(dsi->scp_clk_refcount == 0);
1316 if (--dsi->scp_clk_refcount == 0)
1317 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */
1320 enum dsi_pll_power_state {
1321 DSI_PLL_POWER_OFF = 0x0,
1322 DSI_PLL_POWER_ON_HSCLK = 0x1,
1323 DSI_PLL_POWER_ON_ALL = 0x2,
1324 DSI_PLL_POWER_ON_DIV = 0x3,
1327 static int dsi_pll_power(struct platform_device *dsidev,
1328 enum dsi_pll_power_state state)
1332 /* DSI-PLL power command 0x3 is not working */
1333 if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) &&
1334 state == DSI_PLL_POWER_ON_DIV)
1335 state = DSI_PLL_POWER_ON_ALL;
1338 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, state, 31, 30);
1340 /* PLL_PWR_STATUS */
1341 while (FLD_GET(dsi_read_reg(dsidev, DSI_CLK_CTRL), 29, 28) != state) {
1343 DSSERR("Failed to set DSI PLL power mode to %d\n",
1353 unsigned long dsi_get_pll_clkin(struct platform_device *dsidev)
1355 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1356 return clk_get_rate(dsi->sys_clk);
1359 bool dsi_hsdiv_calc(struct platform_device *dsidev, unsigned long pll,
1360 unsigned long out_min, dsi_hsdiv_calc_func func, void *data)
1362 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1363 int regm, regm_start, regm_stop;
1364 unsigned long out_max;
1367 out_min = out_min ? out_min : 1;
1368 out_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
1370 regm_start = max(DIV_ROUND_UP(pll, out_max), 1ul);
1371 regm_stop = min(pll / out_min, dsi->regm_dispc_max);
1373 for (regm = regm_start; regm <= regm_stop; ++regm) {
1376 if (func(regm, out, data))
1383 bool dsi_pll_calc(struct platform_device *dsidev, unsigned long clkin,
1384 unsigned long pll_min, unsigned long pll_max,
1385 dsi_pll_calc_func func, void *data)
1387 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1388 int regn, regn_start, regn_stop;
1389 int regm, regm_start, regm_stop;
1390 unsigned long fint, pll;
1391 const unsigned long pll_hw_max = 1800000000;
1392 unsigned long fint_hw_min, fint_hw_max;
1394 fint_hw_min = dsi->fint_min;
1395 fint_hw_max = dsi->fint_max;
1397 regn_start = max(DIV_ROUND_UP(clkin, fint_hw_max), 1ul);
1398 regn_stop = min(clkin / fint_hw_min, dsi->regn_max);
1400 pll_max = pll_max ? pll_max : ULONG_MAX;
1402 for (regn = regn_start; regn <= regn_stop; ++regn) {
1403 fint = clkin / regn;
1405 regm_start = max(DIV_ROUND_UP(DIV_ROUND_UP(pll_min, fint), 2),
1407 regm_stop = min3(pll_max / fint / 2,
1408 pll_hw_max / fint / 2,
1411 for (regm = regm_start; regm <= regm_stop; ++regm) {
1412 pll = 2 * regm * fint;
1414 if (func(regn, regm, fint, pll, data))
1422 /* calculate clock rates using dividers in cinfo */
1423 static int dsi_calc_clock_rates(struct platform_device *dsidev,
1424 struct dsi_clock_info *cinfo)
1426 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1428 if (cinfo->regn == 0 || cinfo->regn > dsi->regn_max)
1431 if (cinfo->regm == 0 || cinfo->regm > dsi->regm_max)
1434 if (cinfo->regm_dispc > dsi->regm_dispc_max)
1437 if (cinfo->regm_dsi > dsi->regm_dsi_max)
1440 cinfo->clkin = clk_get_rate(dsi->sys_clk);
1441 cinfo->fint = cinfo->clkin / cinfo->regn;
1443 if (cinfo->fint > dsi->fint_max || cinfo->fint < dsi->fint_min)
1446 cinfo->clkin4ddr = 2 * cinfo->regm * cinfo->fint;
1448 if (cinfo->clkin4ddr > 1800 * 1000 * 1000)
1451 if (cinfo->regm_dispc > 0)
1452 cinfo->dsi_pll_hsdiv_dispc_clk =
1453 cinfo->clkin4ddr / cinfo->regm_dispc;
1455 cinfo->dsi_pll_hsdiv_dispc_clk = 0;
1457 if (cinfo->regm_dsi > 0)
1458 cinfo->dsi_pll_hsdiv_dsi_clk =
1459 cinfo->clkin4ddr / cinfo->regm_dsi;
1461 cinfo->dsi_pll_hsdiv_dsi_clk = 0;
1466 static void dsi_pll_calc_dsi_fck(struct dsi_clock_info *cinfo)
1468 unsigned long max_dsi_fck;
1470 max_dsi_fck = dss_feat_get_param_max(FEAT_PARAM_DSI_FCK);
1472 cinfo->regm_dsi = DIV_ROUND_UP(cinfo->clkin4ddr, max_dsi_fck);
1473 cinfo->dsi_pll_hsdiv_dsi_clk = cinfo->clkin4ddr / cinfo->regm_dsi;
1476 int dsi_pll_set_clock_div(struct platform_device *dsidev,
1477 struct dsi_clock_info *cinfo)
1479 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1483 u8 regn_start, regn_end, regm_start, regm_end;
1484 u8 regm_dispc_start, regm_dispc_end, regm_dsi_start, regm_dsi_end;
1486 DSSDBG("DSI PLL clock config starts");
1488 dsi->current_cinfo.clkin = cinfo->clkin;
1489 dsi->current_cinfo.fint = cinfo->fint;
1490 dsi->current_cinfo.clkin4ddr = cinfo->clkin4ddr;
1491 dsi->current_cinfo.dsi_pll_hsdiv_dispc_clk =
1492 cinfo->dsi_pll_hsdiv_dispc_clk;
1493 dsi->current_cinfo.dsi_pll_hsdiv_dsi_clk =
1494 cinfo->dsi_pll_hsdiv_dsi_clk;
1496 dsi->current_cinfo.regn = cinfo->regn;
1497 dsi->current_cinfo.regm = cinfo->regm;
1498 dsi->current_cinfo.regm_dispc = cinfo->regm_dispc;
1499 dsi->current_cinfo.regm_dsi = cinfo->regm_dsi;
1501 DSSDBG("DSI Fint %ld\n", cinfo->fint);
1503 DSSDBG("clkin rate %ld\n", cinfo->clkin);
1505 /* DSIPHY == CLKIN4DDR */
1506 DSSDBG("CLKIN4DDR = 2 * %d / %d * %lu = %lu\n",
1512 DSSDBG("Data rate on 1 DSI lane %ld Mbps\n",
1513 cinfo->clkin4ddr / 1000 / 1000 / 2);
1515 DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4);
1517 DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc,
1518 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1519 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1520 cinfo->dsi_pll_hsdiv_dispc_clk);
1521 DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi,
1522 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1523 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1524 cinfo->dsi_pll_hsdiv_dsi_clk);
1526 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGN, ®n_start, ®n_end);
1527 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM, ®m_start, ®m_end);
1528 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DISPC, ®m_dispc_start,
1530 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DSI, ®m_dsi_start,
1533 /* DSI_PLL_AUTOMODE = manual */
1534 REG_FLD_MOD(dsidev, DSI_PLL_CONTROL, 0, 0, 0);
1536 l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION1);
1537 l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */
1539 l = FLD_MOD(l, cinfo->regn - 1, regn_start, regn_end);
1541 l = FLD_MOD(l, cinfo->regm, regm_start, regm_end);
1543 l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0,
1544 regm_dispc_start, regm_dispc_end);
1545 /* DSIPROTO_CLOCK_DIV */
1546 l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0,
1547 regm_dsi_start, regm_dsi_end);
1548 dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION1, l);
1550 BUG_ON(cinfo->fint < dsi->fint_min || cinfo->fint > dsi->fint_max);
1552 l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION2);
1554 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) {
1555 f = cinfo->fint < 1000000 ? 0x3 :
1556 cinfo->fint < 1250000 ? 0x4 :
1557 cinfo->fint < 1500000 ? 0x5 :
1558 cinfo->fint < 1750000 ? 0x6 :
1561 l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */
1562 } else if (dss_has_feature(FEAT_DSI_PLL_SELFREQDCO)) {
1563 f = cinfo->clkin4ddr < 1000000000 ? 0x2 : 0x4;
1565 l = FLD_MOD(l, f, 4, 1); /* PLL_SELFREQDCO */
1568 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1569 l = FLD_MOD(l, 0, 14, 14); /* DSIPHY_CLKINEN */
1570 l = FLD_MOD(l, 1, 20, 20); /* DSI_HSDIVBYPASS */
1571 if (dss_has_feature(FEAT_DSI_PLL_REFSEL))
1572 l = FLD_MOD(l, 3, 22, 21); /* REF_SYSCLK = sysclk */
1573 dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION2, l);
1575 REG_FLD_MOD(dsidev, DSI_PLL_GO, 1, 0, 0); /* DSI_PLL_GO */
1577 if (wait_for_bit_change(dsidev, DSI_PLL_GO, 0, 0) != 0) {
1578 DSSERR("dsi pll go bit not going down.\n");
1583 if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 1, 1) != 1) {
1584 DSSERR("cannot lock PLL\n");
1589 dsi->pll_locked = 1;
1591 l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION2);
1592 l = FLD_MOD(l, 0, 0, 0); /* DSI_PLL_IDLE */
1593 l = FLD_MOD(l, 0, 5, 5); /* DSI_PLL_PLLLPMODE */
1594 l = FLD_MOD(l, 0, 6, 6); /* DSI_PLL_LOWCURRSTBY */
1595 l = FLD_MOD(l, 0, 7, 7); /* DSI_PLL_TIGHTPHASELOCK */
1596 l = FLD_MOD(l, 0, 8, 8); /* DSI_PLL_DRIFTGUARDEN */
1597 l = FLD_MOD(l, 0, 10, 9); /* DSI_PLL_LOCKSEL */
1598 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1599 l = FLD_MOD(l, 1, 14, 14); /* DSIPHY_CLKINEN */
1600 l = FLD_MOD(l, 0, 15, 15); /* DSI_BYPASSEN */
1601 l = FLD_MOD(l, 1, 16, 16); /* DSS_CLOCK_EN */
1602 l = FLD_MOD(l, 0, 17, 17); /* DSS_CLOCK_PWDN */
1603 l = FLD_MOD(l, 1, 18, 18); /* DSI_PROTO_CLOCK_EN */
1604 l = FLD_MOD(l, 0, 19, 19); /* DSI_PROTO_CLOCK_PWDN */
1605 l = FLD_MOD(l, 0, 20, 20); /* DSI_HSDIVBYPASS */
1606 dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION2, l);
1608 DSSDBG("PLL config done\n");
1613 int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk,
1616 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1618 enum dsi_pll_power_state pwstate;
1620 DSSDBG("PLL init\n");
1623 * It seems that on many OMAPs we need to enable both to have a
1624 * functional HSDivider.
1626 enable_hsclk = enable_hsdiv = true;
1628 r = dsi_regulator_init(dsidev);
1632 dsi_enable_pll_clock(dsidev, 1);
1634 * Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
1636 dsi_enable_scp_clk(dsidev);
1638 if (!dsi->vdds_dsi_enabled) {
1639 r = regulator_enable(dsi->vdds_dsi_reg);
1642 dsi->vdds_dsi_enabled = true;
1645 /* XXX PLL does not come out of reset without this... */
1646 dispc_pck_free_enable(1);
1648 if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 0, 1) != 1) {
1649 DSSERR("PLL not coming out of reset.\n");
1651 dispc_pck_free_enable(0);
1655 /* XXX ... but if left on, we get problems when planes do not
1656 * fill the whole display. No idea about this */
1657 dispc_pck_free_enable(0);
1659 if (enable_hsclk && enable_hsdiv)
1660 pwstate = DSI_PLL_POWER_ON_ALL;
1661 else if (enable_hsclk)
1662 pwstate = DSI_PLL_POWER_ON_HSCLK;
1663 else if (enable_hsdiv)
1664 pwstate = DSI_PLL_POWER_ON_DIV;
1666 pwstate = DSI_PLL_POWER_OFF;
1668 r = dsi_pll_power(dsidev, pwstate);
1673 DSSDBG("PLL init done\n");
1677 if (dsi->vdds_dsi_enabled) {
1678 regulator_disable(dsi->vdds_dsi_reg);
1679 dsi->vdds_dsi_enabled = false;
1682 dsi_disable_scp_clk(dsidev);
1683 dsi_enable_pll_clock(dsidev, 0);
1687 void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes)
1689 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1691 dsi->pll_locked = 0;
1692 dsi_pll_power(dsidev, DSI_PLL_POWER_OFF);
1693 if (disconnect_lanes) {
1694 WARN_ON(!dsi->vdds_dsi_enabled);
1695 regulator_disable(dsi->vdds_dsi_reg);
1696 dsi->vdds_dsi_enabled = false;
1699 dsi_disable_scp_clk(dsidev);
1700 dsi_enable_pll_clock(dsidev, 0);
1702 DSSDBG("PLL uninit done\n");
1705 static void dsi_dump_dsidev_clocks(struct platform_device *dsidev,
1708 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1709 struct dsi_clock_info *cinfo = &dsi->current_cinfo;
1710 enum omap_dss_clk_source dispc_clk_src, dsi_clk_src;
1711 int dsi_module = dsi->module_id;
1713 dispc_clk_src = dss_get_dispc_clk_source();
1714 dsi_clk_src = dss_get_dsi_clk_source(dsi_module);
1716 if (dsi_runtime_get(dsidev))
1719 seq_printf(s, "- DSI%d PLL -\n", dsi_module + 1);
1721 seq_printf(s, "dsi pll clkin\t%lu\n", cinfo->clkin);
1723 seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn);
1725 seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n",
1726 cinfo->clkin4ddr, cinfo->regm);
1728 seq_printf(s, "DSI_PLL_HSDIV_DISPC (%s)\t%-16luregm_dispc %u\t(%s)\n",
1729 dss_feat_get_clk_source_name(dsi_module == 0 ?
1730 OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC :
1731 OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC),
1732 cinfo->dsi_pll_hsdiv_dispc_clk,
1734 dispc_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1737 seq_printf(s, "DSI_PLL_HSDIV_DSI (%s)\t%-16luregm_dsi %u\t(%s)\n",
1738 dss_feat_get_clk_source_name(dsi_module == 0 ?
1739 OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI :
1740 OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI),
1741 cinfo->dsi_pll_hsdiv_dsi_clk,
1743 dsi_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1746 seq_printf(s, "- DSI%d -\n", dsi_module + 1);
1748 seq_printf(s, "dsi fclk source = %s (%s)\n",
1749 dss_get_generic_clk_source_name(dsi_clk_src),
1750 dss_feat_get_clk_source_name(dsi_clk_src));
1752 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate(dsidev));
1754 seq_printf(s, "DDR_CLK\t\t%lu\n",
1755 cinfo->clkin4ddr / 4);
1757 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs(dsidev));
1759 seq_printf(s, "LP_CLK\t\t%lu\n", cinfo->lp_clk);
1761 dsi_runtime_put(dsidev);
1764 void dsi_dump_clocks(struct seq_file *s)
1766 struct platform_device *dsidev;
1769 for (i = 0; i < MAX_NUM_DSI; i++) {
1770 dsidev = dsi_get_dsidev_from_id(i);
1772 dsi_dump_dsidev_clocks(dsidev, s);
1776 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1777 static void dsi_dump_dsidev_irqs(struct platform_device *dsidev,
1780 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
1781 unsigned long flags;
1782 struct dsi_irq_stats stats;
1784 spin_lock_irqsave(&dsi->irq_stats_lock, flags);
1786 stats = dsi->irq_stats;
1787 memset(&dsi->irq_stats, 0, sizeof(dsi->irq_stats));
1788 dsi->irq_stats.last_reset = jiffies;
1790 spin_unlock_irqrestore(&dsi->irq_stats_lock, flags);
1792 seq_printf(s, "period %u ms\n",
1793 jiffies_to_msecs(jiffies - stats.last_reset));
1795 seq_printf(s, "irqs %d\n", stats.irq_count);
1797 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1799 seq_printf(s, "-- DSI%d interrupts --\n", dsi->module_id + 1);
1815 PIS(LDO_POWER_GOOD);
1820 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1821 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1822 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1823 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1824 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1826 seq_printf(s, "-- VC interrupts --\n");
1835 PIS(PP_BUSY_CHANGE);
1839 seq_printf(s, "%-20s %10d\n", #x, \
1840 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1842 seq_printf(s, "-- CIO interrupts --\n");
1855 PIS(ERRCONTENTIONLP0_1);
1856 PIS(ERRCONTENTIONLP1_1);
1857 PIS(ERRCONTENTIONLP0_2);
1858 PIS(ERRCONTENTIONLP1_2);
1859 PIS(ERRCONTENTIONLP0_3);
1860 PIS(ERRCONTENTIONLP1_3);
1861 PIS(ULPSACTIVENOT_ALL0);
1862 PIS(ULPSACTIVENOT_ALL1);
1866 static void dsi1_dump_irqs(struct seq_file *s)
1868 struct platform_device *dsidev = dsi_get_dsidev_from_id(0);
1870 dsi_dump_dsidev_irqs(dsidev, s);
1873 static void dsi2_dump_irqs(struct seq_file *s)
1875 struct platform_device *dsidev = dsi_get_dsidev_from_id(1);
1877 dsi_dump_dsidev_irqs(dsidev, s);
1881 static void dsi_dump_dsidev_regs(struct platform_device *dsidev,
1884 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(dsidev, r))
1886 if (dsi_runtime_get(dsidev))
1888 dsi_enable_scp_clk(dsidev);
1890 DUMPREG(DSI_REVISION);
1891 DUMPREG(DSI_SYSCONFIG);
1892 DUMPREG(DSI_SYSSTATUS);
1893 DUMPREG(DSI_IRQSTATUS);
1894 DUMPREG(DSI_IRQENABLE);
1896 DUMPREG(DSI_COMPLEXIO_CFG1);
1897 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1898 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1899 DUMPREG(DSI_CLK_CTRL);
1900 DUMPREG(DSI_TIMING1);
1901 DUMPREG(DSI_TIMING2);
1902 DUMPREG(DSI_VM_TIMING1);
1903 DUMPREG(DSI_VM_TIMING2);
1904 DUMPREG(DSI_VM_TIMING3);
1905 DUMPREG(DSI_CLK_TIMING);
1906 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1907 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1908 DUMPREG(DSI_COMPLEXIO_CFG2);
1909 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1910 DUMPREG(DSI_VM_TIMING4);
1911 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1912 DUMPREG(DSI_VM_TIMING5);
1913 DUMPREG(DSI_VM_TIMING6);
1914 DUMPREG(DSI_VM_TIMING7);
1915 DUMPREG(DSI_STOPCLK_TIMING);
1917 DUMPREG(DSI_VC_CTRL(0));
1918 DUMPREG(DSI_VC_TE(0));
1919 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1920 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1921 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1922 DUMPREG(DSI_VC_IRQSTATUS(0));
1923 DUMPREG(DSI_VC_IRQENABLE(0));
1925 DUMPREG(DSI_VC_CTRL(1));
1926 DUMPREG(DSI_VC_TE(1));
1927 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1928 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1929 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1930 DUMPREG(DSI_VC_IRQSTATUS(1));
1931 DUMPREG(DSI_VC_IRQENABLE(1));
1933 DUMPREG(DSI_VC_CTRL(2));
1934 DUMPREG(DSI_VC_TE(2));
1935 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1936 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1937 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1938 DUMPREG(DSI_VC_IRQSTATUS(2));
1939 DUMPREG(DSI_VC_IRQENABLE(2));
1941 DUMPREG(DSI_VC_CTRL(3));
1942 DUMPREG(DSI_VC_TE(3));
1943 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1944 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1945 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1946 DUMPREG(DSI_VC_IRQSTATUS(3));
1947 DUMPREG(DSI_VC_IRQENABLE(3));
1949 DUMPREG(DSI_DSIPHY_CFG0);
1950 DUMPREG(DSI_DSIPHY_CFG1);
1951 DUMPREG(DSI_DSIPHY_CFG2);
1952 DUMPREG(DSI_DSIPHY_CFG5);
1954 DUMPREG(DSI_PLL_CONTROL);
1955 DUMPREG(DSI_PLL_STATUS);
1956 DUMPREG(DSI_PLL_GO);
1957 DUMPREG(DSI_PLL_CONFIGURATION1);
1958 DUMPREG(DSI_PLL_CONFIGURATION2);
1960 dsi_disable_scp_clk(dsidev);
1961 dsi_runtime_put(dsidev);
1965 static void dsi1_dump_regs(struct seq_file *s)
1967 struct platform_device *dsidev = dsi_get_dsidev_from_id(0);
1969 dsi_dump_dsidev_regs(dsidev, s);
1972 static void dsi2_dump_regs(struct seq_file *s)
1974 struct platform_device *dsidev = dsi_get_dsidev_from_id(1);
1976 dsi_dump_dsidev_regs(dsidev, s);
1979 enum dsi_cio_power_state {
1980 DSI_COMPLEXIO_POWER_OFF = 0x0,
1981 DSI_COMPLEXIO_POWER_ON = 0x1,
1982 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1985 static int dsi_cio_power(struct platform_device *dsidev,
1986 enum dsi_cio_power_state state)
1991 REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG1, state, 28, 27);
1994 while (FLD_GET(dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1),
1997 DSSERR("failed to set complexio power state to "
2007 static unsigned dsi_get_line_buf_size(struct platform_device *dsidev)
2011 /* line buffer on OMAP3 is 1024 x 24bits */
2012 /* XXX: for some reason using full buffer size causes
2013 * considerable TX slowdown with update sizes that fill the
2015 if (!dss_has_feature(FEAT_DSI_GNQ))
2018 val = REG_GET(dsidev, DSI_GNQ, 14, 12); /* VP1_LINE_BUFFER_SIZE */
2022 return 512 * 3; /* 512x24 bits */
2024 return 682 * 3; /* 682x24 bits */
2026 return 853 * 3; /* 853x24 bits */
2028 return 1024 * 3; /* 1024x24 bits */
2030 return 1194 * 3; /* 1194x24 bits */
2032 return 1365 * 3; /* 1365x24 bits */
2034 return 1920 * 3; /* 1920x24 bits */
2041 static int dsi_set_lane_config(struct platform_device *dsidev)
2043 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2044 static const u8 offsets[] = { 0, 4, 8, 12, 16 };
2045 static const enum dsi_lane_function functions[] = {
2055 r = dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1);
2057 for (i = 0; i < dsi->num_lanes_used; ++i) {
2058 unsigned offset = offsets[i];
2059 unsigned polarity, lane_number;
2062 for (t = 0; t < dsi->num_lanes_supported; ++t)
2063 if (dsi->lanes[t].function == functions[i])
2066 if (t == dsi->num_lanes_supported)
2070 polarity = dsi->lanes[t].polarity;
2072 r = FLD_MOD(r, lane_number + 1, offset + 2, offset);
2073 r = FLD_MOD(r, polarity, offset + 3, offset + 3);
2076 /* clear the unused lanes */
2077 for (; i < dsi->num_lanes_supported; ++i) {
2078 unsigned offset = offsets[i];
2080 r = FLD_MOD(r, 0, offset + 2, offset);
2081 r = FLD_MOD(r, 0, offset + 3, offset + 3);
2084 dsi_write_reg(dsidev, DSI_COMPLEXIO_CFG1, r);
2089 static inline unsigned ns2ddr(struct platform_device *dsidev, unsigned ns)
2091 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2093 /* convert time in ns to ddr ticks, rounding up */
2094 unsigned long ddr_clk = dsi->current_cinfo.clkin4ddr / 4;
2095 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
2098 static inline unsigned ddr2ns(struct platform_device *dsidev, unsigned ddr)
2100 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2102 unsigned long ddr_clk = dsi->current_cinfo.clkin4ddr / 4;
2103 return ddr * 1000 * 1000 / (ddr_clk / 1000);
2106 static void dsi_cio_timings(struct platform_device *dsidev)
2109 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
2110 u32 tlpx_half, tclk_trail, tclk_zero;
2113 /* calculate timings */
2115 /* 1 * DDR_CLK = 2 * UI */
2117 /* min 40ns + 4*UI max 85ns + 6*UI */
2118 ths_prepare = ns2ddr(dsidev, 70) + 2;
2120 /* min 145ns + 10*UI */
2121 ths_prepare_ths_zero = ns2ddr(dsidev, 175) + 2;
2123 /* min max(8*UI, 60ns+4*UI) */
2124 ths_trail = ns2ddr(dsidev, 60) + 5;
2127 ths_exit = ns2ddr(dsidev, 145);
2130 tlpx_half = ns2ddr(dsidev, 25);
2133 tclk_trail = ns2ddr(dsidev, 60) + 2;
2135 /* min 38ns, max 95ns */
2136 tclk_prepare = ns2ddr(dsidev, 65);
2138 /* min tclk-prepare + tclk-zero = 300ns */
2139 tclk_zero = ns2ddr(dsidev, 260);
2141 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
2142 ths_prepare, ddr2ns(dsidev, ths_prepare),
2143 ths_prepare_ths_zero, ddr2ns(dsidev, ths_prepare_ths_zero));
2144 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
2145 ths_trail, ddr2ns(dsidev, ths_trail),
2146 ths_exit, ddr2ns(dsidev, ths_exit));
2148 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
2149 "tclk_zero %u (%uns)\n",
2150 tlpx_half, ddr2ns(dsidev, tlpx_half),
2151 tclk_trail, ddr2ns(dsidev, tclk_trail),
2152 tclk_zero, ddr2ns(dsidev, tclk_zero));
2153 DSSDBG("tclk_prepare %u (%uns)\n",
2154 tclk_prepare, ddr2ns(dsidev, tclk_prepare));
2156 /* program timings */
2158 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0);
2159 r = FLD_MOD(r, ths_prepare, 31, 24);
2160 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
2161 r = FLD_MOD(r, ths_trail, 15, 8);
2162 r = FLD_MOD(r, ths_exit, 7, 0);
2163 dsi_write_reg(dsidev, DSI_DSIPHY_CFG0, r);
2165 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1);
2166 r = FLD_MOD(r, tlpx_half, 20, 16);
2167 r = FLD_MOD(r, tclk_trail, 15, 8);
2168 r = FLD_MOD(r, tclk_zero, 7, 0);
2170 if (dss_has_feature(FEAT_DSI_PHY_DCC)) {
2171 r = FLD_MOD(r, 0, 21, 21); /* DCCEN = disable */
2172 r = FLD_MOD(r, 1, 22, 22); /* CLKINP_DIVBY2EN = enable */
2173 r = FLD_MOD(r, 1, 23, 23); /* CLKINP_SEL = enable */
2176 dsi_write_reg(dsidev, DSI_DSIPHY_CFG1, r);
2178 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG2);
2179 r = FLD_MOD(r, tclk_prepare, 7, 0);
2180 dsi_write_reg(dsidev, DSI_DSIPHY_CFG2, r);
2183 /* lane masks have lane 0 at lsb. mask_p for positive lines, n for negative */
2184 static void dsi_cio_enable_lane_override(struct platform_device *dsidev,
2185 unsigned mask_p, unsigned mask_n)
2187 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2190 u8 lptxscp_start = dsi->num_lanes_supported == 3 ? 22 : 26;
2194 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2195 unsigned p = dsi->lanes[i].polarity;
2197 if (mask_p & (1 << i))
2198 l |= 1 << (i * 2 + (p ? 0 : 1));
2200 if (mask_n & (1 << i))
2201 l |= 1 << (i * 2 + (p ? 1 : 0));
2205 * Bits in REGLPTXSCPDAT4TO0DXDY:
2213 /* Set the lane override configuration */
2215 /* REGLPTXSCPDAT4TO0DXDY */
2216 REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, l, lptxscp_start, 17);
2218 /* Enable lane override */
2221 REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 1, 27, 27);
2224 static void dsi_cio_disable_lane_override(struct platform_device *dsidev)
2226 /* Disable lane override */
2227 REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
2228 /* Reset the lane override configuration */
2229 /* REGLPTXSCPDAT4TO0DXDY */
2230 REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 0, 22, 17);
2233 static int dsi_cio_wait_tx_clk_esc_reset(struct platform_device *dsidev)
2235 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2237 bool in_use[DSI_MAX_NR_LANES];
2238 static const u8 offsets_old[] = { 28, 27, 26 };
2239 static const u8 offsets_new[] = { 24, 25, 26, 27, 28 };
2242 if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC))
2243 offsets = offsets_old;
2245 offsets = offsets_new;
2247 for (i = 0; i < dsi->num_lanes_supported; ++i)
2248 in_use[i] = dsi->lanes[i].function != DSI_LANE_UNUSED;
2255 l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
2258 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2259 if (!in_use[i] || (l & (1 << offsets[i])))
2263 if (ok == dsi->num_lanes_supported)
2267 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2268 if (!in_use[i] || (l & (1 << offsets[i])))
2271 DSSERR("CIO TXCLKESC%d domain not coming " \
2272 "out of reset\n", i);
2281 /* return bitmask of enabled lanes, lane0 being the lsb */
2282 static unsigned dsi_get_lane_mask(struct platform_device *dsidev)
2284 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2288 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2289 if (dsi->lanes[i].function != DSI_LANE_UNUSED)
2296 static int dsi_cio_init(struct platform_device *dsidev)
2298 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2302 DSSDBG("DSI CIO init starts");
2304 r = dss_dsi_enable_pads(dsi->module_id, dsi_get_lane_mask(dsidev));
2308 dsi_enable_scp_clk(dsidev);
2310 /* A dummy read using the SCP interface to any DSIPHY register is
2311 * required after DSIPHY reset to complete the reset of the DSI complex
2313 dsi_read_reg(dsidev, DSI_DSIPHY_CFG5);
2315 if (wait_for_bit_change(dsidev, DSI_DSIPHY_CFG5, 30, 1) != 1) {
2316 DSSERR("CIO SCP Clock domain not coming out of reset.\n");
2318 goto err_scp_clk_dom;
2321 r = dsi_set_lane_config(dsidev);
2323 goto err_scp_clk_dom;
2325 /* set TX STOP MODE timer to maximum for this operation */
2326 l = dsi_read_reg(dsidev, DSI_TIMING1);
2327 l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2328 l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */
2329 l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */
2330 l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */
2331 dsi_write_reg(dsidev, DSI_TIMING1, l);
2333 if (dsi->ulps_enabled) {
2337 DSSDBG("manual ulps exit\n");
2339 /* ULPS is exited by Mark-1 state for 1ms, followed by
2340 * stop state. DSS HW cannot do this via the normal
2341 * ULPS exit sequence, as after reset the DSS HW thinks
2342 * that we are not in ULPS mode, and refuses to send the
2343 * sequence. So we need to send the ULPS exit sequence
2344 * manually by setting positive lines high and negative lines
2350 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2351 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
2356 dsi_cio_enable_lane_override(dsidev, mask_p, 0);
2359 r = dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ON);
2363 if (wait_for_bit_change(dsidev, DSI_COMPLEXIO_CFG1, 29, 1) != 1) {
2364 DSSERR("CIO PWR clock domain not coming out of reset.\n");
2366 goto err_cio_pwr_dom;
2369 dsi_if_enable(dsidev, true);
2370 dsi_if_enable(dsidev, false);
2371 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
2373 r = dsi_cio_wait_tx_clk_esc_reset(dsidev);
2375 goto err_tx_clk_esc_rst;
2377 if (dsi->ulps_enabled) {
2378 /* Keep Mark-1 state for 1ms (as per DSI spec) */
2379 ktime_t wait = ns_to_ktime(1000 * 1000);
2380 set_current_state(TASK_UNINTERRUPTIBLE);
2381 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
2383 /* Disable the override. The lanes should be set to Mark-11
2384 * state by the HW */
2385 dsi_cio_disable_lane_override(dsidev);
2388 /* FORCE_TX_STOP_MODE_IO */
2389 REG_FLD_MOD(dsidev, DSI_TIMING1, 0, 15, 15);
2391 dsi_cio_timings(dsidev);
2393 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
2394 /* DDR_CLK_ALWAYS_ON */
2395 REG_FLD_MOD(dsidev, DSI_CLK_CTRL,
2396 dsi->vm_timings.ddr_clk_always_on, 13, 13);
2399 dsi->ulps_enabled = false;
2401 DSSDBG("CIO init done\n");
2406 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */
2408 dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF);
2410 if (dsi->ulps_enabled)
2411 dsi_cio_disable_lane_override(dsidev);
2413 dsi_disable_scp_clk(dsidev);
2414 dss_dsi_disable_pads(dsi->module_id, dsi_get_lane_mask(dsidev));
2418 static void dsi_cio_uninit(struct platform_device *dsidev)
2420 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2422 /* DDR_CLK_ALWAYS_ON */
2423 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 13, 13);
2425 dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF);
2426 dsi_disable_scp_clk(dsidev);
2427 dss_dsi_disable_pads(dsi->module_id, dsi_get_lane_mask(dsidev));
2430 static void dsi_config_tx_fifo(struct platform_device *dsidev,
2431 enum fifo_size size1, enum fifo_size size2,
2432 enum fifo_size size3, enum fifo_size size4)
2434 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2439 dsi->vc[0].fifo_size = size1;
2440 dsi->vc[1].fifo_size = size2;
2441 dsi->vc[2].fifo_size = size3;
2442 dsi->vc[3].fifo_size = size4;
2444 for (i = 0; i < 4; i++) {
2446 int size = dsi->vc[i].fifo_size;
2448 if (add + size > 4) {
2449 DSSERR("Illegal FIFO configuration\n");
2454 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2456 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
2460 dsi_write_reg(dsidev, DSI_TX_FIFO_VC_SIZE, r);
2463 static void dsi_config_rx_fifo(struct platform_device *dsidev,
2464 enum fifo_size size1, enum fifo_size size2,
2465 enum fifo_size size3, enum fifo_size size4)
2467 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2472 dsi->vc[0].fifo_size = size1;
2473 dsi->vc[1].fifo_size = size2;
2474 dsi->vc[2].fifo_size = size3;
2475 dsi->vc[3].fifo_size = size4;
2477 for (i = 0; i < 4; i++) {
2479 int size = dsi->vc[i].fifo_size;
2481 if (add + size > 4) {
2482 DSSERR("Illegal FIFO configuration\n");
2487 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2489 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2493 dsi_write_reg(dsidev, DSI_RX_FIFO_VC_SIZE, r);
2496 static int dsi_force_tx_stop_mode_io(struct platform_device *dsidev)
2500 r = dsi_read_reg(dsidev, DSI_TIMING1);
2501 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2502 dsi_write_reg(dsidev, DSI_TIMING1, r);
2504 if (wait_for_bit_change(dsidev, DSI_TIMING1, 15, 0) != 0) {
2505 DSSERR("TX_STOP bit not going down\n");
2512 static bool dsi_vc_is_enabled(struct platform_device *dsidev, int channel)
2514 return REG_GET(dsidev, DSI_VC_CTRL(channel), 0, 0);
2517 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2519 struct dsi_packet_sent_handler_data *vp_data =
2520 (struct dsi_packet_sent_handler_data *) data;
2521 struct dsi_data *dsi = dsi_get_dsidrv_data(vp_data->dsidev);
2522 const int channel = dsi->update_channel;
2523 u8 bit = dsi->te_enabled ? 30 : 31;
2525 if (REG_GET(vp_data->dsidev, DSI_VC_TE(channel), bit, bit) == 0)
2526 complete(vp_data->completion);
2529 static int dsi_sync_vc_vp(struct platform_device *dsidev, int channel)
2531 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2532 DECLARE_COMPLETION_ONSTACK(completion);
2533 struct dsi_packet_sent_handler_data vp_data = { dsidev, &completion };
2537 bit = dsi->te_enabled ? 30 : 31;
2539 r = dsi_register_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp,
2540 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2544 /* Wait for completion only if TE_EN/TE_START is still set */
2545 if (REG_GET(dsidev, DSI_VC_TE(channel), bit, bit)) {
2546 if (wait_for_completion_timeout(&completion,
2547 msecs_to_jiffies(10)) == 0) {
2548 DSSERR("Failed to complete previous frame transfer\n");
2554 dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp,
2555 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2559 dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp,
2560 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2565 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2567 struct dsi_packet_sent_handler_data *l4_data =
2568 (struct dsi_packet_sent_handler_data *) data;
2569 struct dsi_data *dsi = dsi_get_dsidrv_data(l4_data->dsidev);
2570 const int channel = dsi->update_channel;
2572 if (REG_GET(l4_data->dsidev, DSI_VC_CTRL(channel), 5, 5) == 0)
2573 complete(l4_data->completion);
2576 static int dsi_sync_vc_l4(struct platform_device *dsidev, int channel)
2578 DECLARE_COMPLETION_ONSTACK(completion);
2579 struct dsi_packet_sent_handler_data l4_data = { dsidev, &completion };
2582 r = dsi_register_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4,
2583 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2587 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2588 if (REG_GET(dsidev, DSI_VC_CTRL(channel), 5, 5)) {
2589 if (wait_for_completion_timeout(&completion,
2590 msecs_to_jiffies(10)) == 0) {
2591 DSSERR("Failed to complete previous l4 transfer\n");
2597 dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4,
2598 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2602 dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4,
2603 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2608 static int dsi_sync_vc(struct platform_device *dsidev, int channel)
2610 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2612 WARN_ON(!dsi_bus_is_locked(dsidev));
2614 WARN_ON(in_interrupt());
2616 if (!dsi_vc_is_enabled(dsidev, channel))
2619 switch (dsi->vc[channel].source) {
2620 case DSI_VC_SOURCE_VP:
2621 return dsi_sync_vc_vp(dsidev, channel);
2622 case DSI_VC_SOURCE_L4:
2623 return dsi_sync_vc_l4(dsidev, channel);
2630 static int dsi_vc_enable(struct platform_device *dsidev, int channel,
2633 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2636 enable = enable ? 1 : 0;
2638 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 0, 0);
2640 if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel),
2641 0, enable) != enable) {
2642 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2649 static void dsi_vc_initial_config(struct platform_device *dsidev, int channel)
2651 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2654 DSSDBG("Initial config of virtual channel %d", channel);
2656 r = dsi_read_reg(dsidev, DSI_VC_CTRL(channel));
2658 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2659 DSSERR("VC(%d) busy when trying to configure it!\n",
2662 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2663 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2664 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2665 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2666 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2667 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2668 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2669 if (dss_has_feature(FEAT_DSI_VC_OCP_WIDTH))
2670 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2672 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2673 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2675 dsi_write_reg(dsidev, DSI_VC_CTRL(channel), r);
2677 dsi->vc[channel].source = DSI_VC_SOURCE_L4;
2680 static int dsi_vc_config_source(struct platform_device *dsidev, int channel,
2681 enum dsi_vc_source source)
2683 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2685 if (dsi->vc[channel].source == source)
2688 DSSDBG("Source config of virtual channel %d", channel);
2690 dsi_sync_vc(dsidev, channel);
2692 dsi_vc_enable(dsidev, channel, 0);
2695 if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel), 15, 0) != 0) {
2696 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2700 /* SOURCE, 0 = L4, 1 = video port */
2701 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), source, 1, 1);
2703 /* DCS_CMD_ENABLE */
2704 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) {
2705 bool enable = source == DSI_VC_SOURCE_VP;
2706 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 30, 30);
2709 dsi_vc_enable(dsidev, channel, 1);
2711 dsi->vc[channel].source = source;
2716 void omapdss_dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
2719 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
2720 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2722 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2724 WARN_ON(!dsi_bus_is_locked(dsidev));
2726 dsi_vc_enable(dsidev, channel, 0);
2727 dsi_if_enable(dsidev, 0);
2729 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 9, 9);
2731 dsi_vc_enable(dsidev, channel, 1);
2732 dsi_if_enable(dsidev, 1);
2734 dsi_force_tx_stop_mode_io(dsidev);
2736 /* start the DDR clock by sending a NULL packet */
2737 if (dsi->vm_timings.ddr_clk_always_on && enable)
2738 dsi_vc_send_null(dssdev, channel);
2740 EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs);
2742 static void dsi_vc_flush_long_data(struct platform_device *dsidev, int channel)
2744 while (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
2746 val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel));
2747 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2751 (val >> 24) & 0xff);
2755 static void dsi_show_rx_ack_with_err(u16 err)
2757 DSSERR("\tACK with ERROR (%#x):\n", err);
2759 DSSERR("\t\tSoT Error\n");
2761 DSSERR("\t\tSoT Sync Error\n");
2763 DSSERR("\t\tEoT Sync Error\n");
2765 DSSERR("\t\tEscape Mode Entry Command Error\n");
2767 DSSERR("\t\tLP Transmit Sync Error\n");
2769 DSSERR("\t\tHS Receive Timeout Error\n");
2771 DSSERR("\t\tFalse Control Error\n");
2773 DSSERR("\t\t(reserved7)\n");
2775 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2777 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2778 if (err & (1 << 10))
2779 DSSERR("\t\tChecksum Error\n");
2780 if (err & (1 << 11))
2781 DSSERR("\t\tData type not recognized\n");
2782 if (err & (1 << 12))
2783 DSSERR("\t\tInvalid VC ID\n");
2784 if (err & (1 << 13))
2785 DSSERR("\t\tInvalid Transmission Length\n");
2786 if (err & (1 << 14))
2787 DSSERR("\t\t(reserved14)\n");
2788 if (err & (1 << 15))
2789 DSSERR("\t\tDSI Protocol Violation\n");
2792 static u16 dsi_vc_flush_receive_data(struct platform_device *dsidev,
2795 /* RX_FIFO_NOT_EMPTY */
2796 while (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
2799 val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel));
2800 DSSERR("\trawval %#08x\n", val);
2801 dt = FLD_GET(val, 5, 0);
2802 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2803 u16 err = FLD_GET(val, 23, 8);
2804 dsi_show_rx_ack_with_err(err);
2805 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) {
2806 DSSERR("\tDCS short response, 1 byte: %#x\n",
2807 FLD_GET(val, 23, 8));
2808 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) {
2809 DSSERR("\tDCS short response, 2 byte: %#x\n",
2810 FLD_GET(val, 23, 8));
2811 } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) {
2812 DSSERR("\tDCS long response, len %d\n",
2813 FLD_GET(val, 23, 8));
2814 dsi_vc_flush_long_data(dsidev, channel);
2816 DSSERR("\tunknown datatype 0x%02x\n", dt);
2822 static int dsi_vc_send_bta(struct platform_device *dsidev, int channel)
2824 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2826 if (dsi->debug_write || dsi->debug_read)
2827 DSSDBG("dsi_vc_send_bta %d\n", channel);
2829 WARN_ON(!dsi_bus_is_locked(dsidev));
2831 /* RX_FIFO_NOT_EMPTY */
2832 if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
2833 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2834 dsi_vc_flush_receive_data(dsidev, channel);
2837 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2839 /* flush posted write */
2840 dsi_read_reg(dsidev, DSI_VC_CTRL(channel));
2845 int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel)
2847 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
2848 DECLARE_COMPLETION_ONSTACK(completion);
2852 r = dsi_register_isr_vc(dsidev, channel, dsi_completion_handler,
2853 &completion, DSI_VC_IRQ_BTA);
2857 r = dsi_register_isr(dsidev, dsi_completion_handler, &completion,
2858 DSI_IRQ_ERROR_MASK);
2862 r = dsi_vc_send_bta(dsidev, channel);
2866 if (wait_for_completion_timeout(&completion,
2867 msecs_to_jiffies(500)) == 0) {
2868 DSSERR("Failed to receive BTA\n");
2873 err = dsi_get_errors(dsidev);
2875 DSSERR("Error while sending BTA: %x\n", err);
2880 dsi_unregister_isr(dsidev, dsi_completion_handler, &completion,
2881 DSI_IRQ_ERROR_MASK);
2883 dsi_unregister_isr_vc(dsidev, channel, dsi_completion_handler,
2884 &completion, DSI_VC_IRQ_BTA);
2888 EXPORT_SYMBOL(dsi_vc_send_bta_sync);
2890 static inline void dsi_vc_write_long_header(struct platform_device *dsidev,
2891 int channel, u8 data_type, u16 len, u8 ecc)
2893 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2897 WARN_ON(!dsi_bus_is_locked(dsidev));
2899 data_id = data_type | dsi->vc[channel].vc_id << 6;
2901 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2902 FLD_VAL(ecc, 31, 24);
2904 dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_HEADER(channel), val);
2907 static inline void dsi_vc_write_long_payload(struct platform_device *dsidev,
2908 int channel, u8 b1, u8 b2, u8 b3, u8 b4)
2912 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2914 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2915 b1, b2, b3, b4, val); */
2917 dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2920 static int dsi_vc_send_long(struct platform_device *dsidev, int channel,
2921 u8 data_type, u8 *data, u16 len, u8 ecc)
2924 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2930 if (dsi->debug_write)
2931 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2934 if (dsi->vc[channel].fifo_size * 32 * 4 < len + 4) {
2935 DSSERR("unable to send long packet: packet too long.\n");
2939 dsi_vc_config_source(dsidev, channel, DSI_VC_SOURCE_L4);
2941 dsi_vc_write_long_header(dsidev, channel, data_type, len, ecc);
2944 for (i = 0; i < len >> 2; i++) {
2945 if (dsi->debug_write)
2946 DSSDBG("\tsending full packet %d\n", i);
2953 dsi_vc_write_long_payload(dsidev, channel, b1, b2, b3, b4);
2958 b1 = 0; b2 = 0; b3 = 0;
2960 if (dsi->debug_write)
2961 DSSDBG("\tsending remainder bytes %d\n", i);
2978 dsi_vc_write_long_payload(dsidev, channel, b1, b2, b3, 0);
2984 static int dsi_vc_send_short(struct platform_device *dsidev, int channel,
2985 u8 data_type, u16 data, u8 ecc)
2987 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
2991 WARN_ON(!dsi_bus_is_locked(dsidev));
2993 if (dsi->debug_write)
2994 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2996 data_type, data & 0xff, (data >> 8) & 0xff);
2998 dsi_vc_config_source(dsidev, channel, DSI_VC_SOURCE_L4);
3000 if (FLD_GET(dsi_read_reg(dsidev, DSI_VC_CTRL(channel)), 16, 16)) {
3001 DSSERR("ERROR FIFO FULL, aborting transfer\n");
3005 data_id = data_type | dsi->vc[channel].vc_id << 6;
3007 r = (data_id << 0) | (data << 8) | (ecc << 24);
3009 dsi_write_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel), r);
3014 int dsi_vc_send_null(struct omap_dss_device *dssdev, int channel)
3016 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3018 return dsi_vc_send_long(dsidev, channel, MIPI_DSI_NULL_PACKET, NULL,
3021 EXPORT_SYMBOL(dsi_vc_send_null);
3023 static int dsi_vc_write_nosync_common(struct platform_device *dsidev,
3024 int channel, u8 *data, int len, enum dss_dsi_content_type type)
3029 BUG_ON(type == DSS_DSI_CONTENT_DCS);
3030 r = dsi_vc_send_short(dsidev, channel,
3031 MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM, 0, 0);
3032 } else if (len == 1) {
3033 r = dsi_vc_send_short(dsidev, channel,
3034 type == DSS_DSI_CONTENT_GENERIC ?
3035 MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM :
3036 MIPI_DSI_DCS_SHORT_WRITE, data[0], 0);
3037 } else if (len == 2) {
3038 r = dsi_vc_send_short(dsidev, channel,
3039 type == DSS_DSI_CONTENT_GENERIC ?
3040 MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM :
3041 MIPI_DSI_DCS_SHORT_WRITE_PARAM,
3042 data[0] | (data[1] << 8), 0);
3044 r = dsi_vc_send_long(dsidev, channel,
3045 type == DSS_DSI_CONTENT_GENERIC ?
3046 MIPI_DSI_GENERIC_LONG_WRITE :
3047 MIPI_DSI_DCS_LONG_WRITE, data, len, 0);
3053 int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
3056 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3058 return dsi_vc_write_nosync_common(dsidev, channel, data, len,
3059 DSS_DSI_CONTENT_DCS);
3061 EXPORT_SYMBOL(dsi_vc_dcs_write_nosync);
3063 int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel,
3066 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3068 return dsi_vc_write_nosync_common(dsidev, channel, data, len,
3069 DSS_DSI_CONTENT_GENERIC);
3071 EXPORT_SYMBOL(dsi_vc_generic_write_nosync);
3073 static int dsi_vc_write_common(struct omap_dss_device *dssdev, int channel,
3074 u8 *data, int len, enum dss_dsi_content_type type)
3076 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3079 r = dsi_vc_write_nosync_common(dsidev, channel, data, len, type);
3083 r = dsi_vc_send_bta_sync(dssdev, channel);
3087 /* RX_FIFO_NOT_EMPTY */
3088 if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) {
3089 DSSERR("rx fifo not empty after write, dumping data:\n");
3090 dsi_vc_flush_receive_data(dsidev, channel);
3097 DSSERR("dsi_vc_write_common(ch %d, cmd 0x%02x, len %d) failed\n",
3098 channel, data[0], len);
3102 int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
3105 return dsi_vc_write_common(dssdev, channel, data, len,
3106 DSS_DSI_CONTENT_DCS);
3108 EXPORT_SYMBOL(dsi_vc_dcs_write);
3110 int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data,
3113 return dsi_vc_write_common(dssdev, channel, data, len,
3114 DSS_DSI_CONTENT_GENERIC);
3116 EXPORT_SYMBOL(dsi_vc_generic_write);
3118 int dsi_vc_dcs_write_0(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd)
3120 return dsi_vc_dcs_write(dssdev, channel, &dcs_cmd, 1);
3122 EXPORT_SYMBOL(dsi_vc_dcs_write_0);
3124 int dsi_vc_generic_write_0(struct omap_dss_device *dssdev, int channel)
3126 return dsi_vc_generic_write(dssdev, channel, NULL, 0);
3128 EXPORT_SYMBOL(dsi_vc_generic_write_0);
3130 int dsi_vc_dcs_write_1(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
3136 return dsi_vc_dcs_write(dssdev, channel, buf, 2);
3138 EXPORT_SYMBOL(dsi_vc_dcs_write_1);
3140 int dsi_vc_generic_write_1(struct omap_dss_device *dssdev, int channel,
3143 return dsi_vc_generic_write(dssdev, channel, ¶m, 1);
3145 EXPORT_SYMBOL(dsi_vc_generic_write_1);
3147 int dsi_vc_generic_write_2(struct omap_dss_device *dssdev, int channel,
3148 u8 param1, u8 param2)
3153 return dsi_vc_generic_write(dssdev, channel, buf, 2);
3155 EXPORT_SYMBOL(dsi_vc_generic_write_2);
3157 static int dsi_vc_dcs_send_read_request(struct platform_device *dsidev,
3158 int channel, u8 dcs_cmd)
3160 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3163 if (dsi->debug_read)
3164 DSSDBG("dsi_vc_dcs_send_read_request(ch%d, dcs_cmd %x)\n",
3167 r = dsi_vc_send_short(dsidev, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0);
3169 DSSERR("dsi_vc_dcs_send_read_request(ch %d, cmd 0x%02x)"
3170 " failed\n", channel, dcs_cmd);
3177 static int dsi_vc_generic_send_read_request(struct platform_device *dsidev,
3178 int channel, u8 *reqdata, int reqlen)
3180 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3185 if (dsi->debug_read)
3186 DSSDBG("dsi_vc_generic_send_read_request(ch %d, reqlen %d)\n",
3190 data_type = MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM;
3192 } else if (reqlen == 1) {
3193 data_type = MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM;
3195 } else if (reqlen == 2) {
3196 data_type = MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM;
3197 data = reqdata[0] | (reqdata[1] << 8);
3203 r = dsi_vc_send_short(dsidev, channel, data_type, data, 0);
3205 DSSERR("dsi_vc_generic_send_read_request(ch %d, reqlen %d)"
3206 " failed\n", channel, reqlen);
3213 static int dsi_vc_read_rx_fifo(struct platform_device *dsidev, int channel,
3214 u8 *buf, int buflen, enum dss_dsi_content_type type)
3216 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3221 /* RX_FIFO_NOT_EMPTY */
3222 if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20) == 0) {
3223 DSSERR("RX fifo empty when trying to read.\n");
3228 val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel));
3229 if (dsi->debug_read)
3230 DSSDBG("\theader: %08x\n", val);
3231 dt = FLD_GET(val, 5, 0);
3232 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
3233 u16 err = FLD_GET(val, 23, 8);
3234 dsi_show_rx_ack_with_err(err);
3238 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
3239 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE :
3240 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE)) {
3241 u8 data = FLD_GET(val, 15, 8);
3242 if (dsi->debug_read)
3243 DSSDBG("\t%s short response, 1 byte: %02x\n",
3244 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
3255 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
3256 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE :
3257 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE)) {
3258 u16 data = FLD_GET(val, 23, 8);
3259 if (dsi->debug_read)
3260 DSSDBG("\t%s short response, 2 byte: %04x\n",
3261 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
3269 buf[0] = data & 0xff;
3270 buf[1] = (data >> 8) & 0xff;
3273 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
3274 MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE :
3275 MIPI_DSI_RX_DCS_LONG_READ_RESPONSE)) {
3277 int len = FLD_GET(val, 23, 8);
3278 if (dsi->debug_read)
3279 DSSDBG("\t%s long response, len %d\n",
3280 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
3288 /* two byte checksum ends the packet, not included in len */
3289 for (w = 0; w < len + 2;) {
3291 val = dsi_read_reg(dsidev,
3292 DSI_VC_SHORT_PACKET_HEADER(channel));
3293 if (dsi->debug_read)
3294 DSSDBG("\t\t%02x %02x %02x %02x\n",
3298 (val >> 24) & 0xff);
3300 for (b = 0; b < 4; ++b) {
3302 buf[w] = (val >> (b * 8)) & 0xff;
3303 /* we discard the 2 byte checksum */
3310 DSSERR("\tunknown datatype 0x%02x\n", dt);
3316 DSSERR("dsi_vc_read_rx_fifo(ch %d type %s) failed\n", channel,
3317 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : "DCS");
3322 int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
3323 u8 *buf, int buflen)
3325 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3328 r = dsi_vc_dcs_send_read_request(dsidev, channel, dcs_cmd);
3332 r = dsi_vc_send_bta_sync(dssdev, channel);
3336 r = dsi_vc_read_rx_fifo(dsidev, channel, buf, buflen,
3337 DSS_DSI_CONTENT_DCS);
3348 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n", channel, dcs_cmd);
3351 EXPORT_SYMBOL(dsi_vc_dcs_read);
3353 static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel,
3354 u8 *reqdata, int reqlen, u8 *buf, int buflen)
3356 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3359 r = dsi_vc_generic_send_read_request(dsidev, channel, reqdata, reqlen);
3363 r = dsi_vc_send_bta_sync(dssdev, channel);
3367 r = dsi_vc_read_rx_fifo(dsidev, channel, buf, buflen,
3368 DSS_DSI_CONTENT_GENERIC);
3380 int dsi_vc_generic_read_0(struct omap_dss_device *dssdev, int channel, u8 *buf,
3385 r = dsi_vc_generic_read(dssdev, channel, NULL, 0, buf, buflen);
3387 DSSERR("dsi_vc_generic_read_0(ch %d) failed\n", channel);
3393 EXPORT_SYMBOL(dsi_vc_generic_read_0);
3395 int dsi_vc_generic_read_1(struct omap_dss_device *dssdev, int channel, u8 param,
3396 u8 *buf, int buflen)
3400 r = dsi_vc_generic_read(dssdev, channel, ¶m, 1, buf, buflen);
3402 DSSERR("dsi_vc_generic_read_1(ch %d) failed\n", channel);
3408 EXPORT_SYMBOL(dsi_vc_generic_read_1);
3410 int dsi_vc_generic_read_2(struct omap_dss_device *dssdev, int channel,
3411 u8 param1, u8 param2, u8 *buf, int buflen)
3416 reqdata[0] = param1;
3417 reqdata[1] = param2;
3419 r = dsi_vc_generic_read(dssdev, channel, reqdata, 2, buf, buflen);
3421 DSSERR("dsi_vc_generic_read_2(ch %d) failed\n", channel);
3427 EXPORT_SYMBOL(dsi_vc_generic_read_2);
3429 int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel,
3432 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
3434 return dsi_vc_send_short(dsidev, channel,
3435 MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, len, 0);
3437 EXPORT_SYMBOL(dsi_vc_set_max_rx_packet_size);
3439 static int dsi_enter_ulps(struct platform_device *dsidev)
3441 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3442 DECLARE_COMPLETION_ONSTACK(completion);
3446 DSSDBG("Entering ULPS");
3448 WARN_ON(!dsi_bus_is_locked(dsidev));
3450 WARN_ON(dsi->ulps_enabled);
3452 if (dsi->ulps_enabled)
3455 /* DDR_CLK_ALWAYS_ON */
3456 if (REG_GET(dsidev, DSI_CLK_CTRL, 13, 13)) {
3457 dsi_if_enable(dsidev, 0);
3458 REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 13, 13);
3459 dsi_if_enable(dsidev, 1);
3462 dsi_sync_vc(dsidev, 0);
3463 dsi_sync_vc(dsidev, 1);
3464 dsi_sync_vc(dsidev, 2);
3465 dsi_sync_vc(dsidev, 3);
3467 dsi_force_tx_stop_mode_io(dsidev);
3469 dsi_vc_enable(dsidev, 0, false);
3470 dsi_vc_enable(dsidev, 1, false);
3471 dsi_vc_enable(dsidev, 2, false);
3472 dsi_vc_enable(dsidev, 3, false);
3474 if (REG_GET(dsidev, DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */
3475 DSSERR("HS busy when enabling ULPS\n");
3479 if (REG_GET(dsidev, DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */
3480 DSSERR("LP busy when enabling ULPS\n");
3484 r = dsi_register_isr_cio(dsidev, dsi_completion_handler, &completion,
3485 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3491 for (i = 0; i < dsi->num_lanes_supported; ++i) {
3492 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
3496 /* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */
3497 /* LANEx_ULPS_SIG2 */
3498 REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, mask, 9, 5);
3500 /* flush posted write and wait for SCP interface to finish the write */
3501 dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG2);
3503 if (wait_for_completion_timeout(&completion,
3504 msecs_to_jiffies(1000)) == 0) {
3505 DSSERR("ULPS enable timeout\n");
3510 dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion,
3511 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3513 /* Reset LANEx_ULPS_SIG2 */
3514 REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, 0, 9, 5);
3516 /* flush posted write and wait for SCP interface to finish the write */
3517 dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG2);
3519 dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ULPS);
3521 dsi_if_enable(dsidev, false);
3523 dsi->ulps_enabled = true;
3528 dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion,
3529 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3533 static void dsi_set_lp_rx_timeout(struct platform_device *dsidev,
3534 unsigned ticks, bool x4, bool x16)
3537 unsigned long total_ticks;
3540 BUG_ON(ticks > 0x1fff);
3542 /* ticks in DSI_FCK */
3543 fck = dsi_fclk_rate(dsidev);
3545 r = dsi_read_reg(dsidev, DSI_TIMING2);
3546 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
3547 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
3548 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
3549 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
3550 dsi_write_reg(dsidev, DSI_TIMING2, r);
3552 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3554 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3556 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3557 (total_ticks * 1000) / (fck / 1000 / 1000));
3560 static void dsi_set_ta_timeout(struct platform_device *dsidev, unsigned ticks,
3564 unsigned long total_ticks;
3567 BUG_ON(ticks > 0x1fff);
3569 /* ticks in DSI_FCK */
3570 fck = dsi_fclk_rate(dsidev);
3572 r = dsi_read_reg(dsidev, DSI_TIMING1);
3573 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
3574 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
3575 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
3576 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
3577 dsi_write_reg(dsidev, DSI_TIMING1, r);
3579 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
3581 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
3583 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
3584 (total_ticks * 1000) / (fck / 1000 / 1000));
3587 static void dsi_set_stop_state_counter(struct platform_device *dsidev,
3588 unsigned ticks, bool x4, bool x16)
3591 unsigned long total_ticks;
3594 BUG_ON(ticks > 0x1fff);
3596 /* ticks in DSI_FCK */
3597 fck = dsi_fclk_rate(dsidev);
3599 r = dsi_read_reg(dsidev, DSI_TIMING1);
3600 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
3601 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
3602 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
3603 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
3604 dsi_write_reg(dsidev, DSI_TIMING1, r);
3606 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3608 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
3610 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3611 (total_ticks * 1000) / (fck / 1000 / 1000));
3614 static void dsi_set_hs_tx_timeout(struct platform_device *dsidev,
3615 unsigned ticks, bool x4, bool x16)
3618 unsigned long total_ticks;
3621 BUG_ON(ticks > 0x1fff);
3623 /* ticks in TxByteClkHS */
3624 fck = dsi_get_txbyteclkhs(dsidev);
3626 r = dsi_read_reg(dsidev, DSI_TIMING2);
3627 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
3628 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
3629 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
3630 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
3631 dsi_write_reg(dsidev, DSI_TIMING2, r);
3633 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3635 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3637 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3638 (total_ticks * 1000) / (fck / 1000 / 1000));
3641 static void dsi_config_vp_num_line_buffers(struct platform_device *dsidev)
3643 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3644 int num_line_buffers;
3646 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3647 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3648 struct omap_video_timings *timings = &dsi->timings;
3650 * Don't use line buffers if width is greater than the video
3651 * port's line buffer size
3653 if (dsi->line_buffer_size <= timings->x_res * bpp / 8)
3654 num_line_buffers = 0;
3656 num_line_buffers = 2;
3658 /* Use maximum number of line buffers in command mode */
3659 num_line_buffers = 2;
3663 REG_FLD_MOD(dsidev, DSI_CTRL, num_line_buffers, 13, 12);
3666 static void dsi_config_vp_sync_events(struct platform_device *dsidev)
3668 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3672 if (dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE)
3677 r = dsi_read_reg(dsidev, DSI_CTRL);
3678 r = FLD_MOD(r, 1, 9, 9); /* VP_DE_POL */
3679 r = FLD_MOD(r, 1, 10, 10); /* VP_HSYNC_POL */
3680 r = FLD_MOD(r, 1, 11, 11); /* VP_VSYNC_POL */
3681 r = FLD_MOD(r, 1, 15, 15); /* VP_VSYNC_START */
3682 r = FLD_MOD(r, sync_end, 16, 16); /* VP_VSYNC_END */
3683 r = FLD_MOD(r, 1, 17, 17); /* VP_HSYNC_START */
3684 r = FLD_MOD(r, sync_end, 18, 18); /* VP_HSYNC_END */
3685 dsi_write_reg(dsidev, DSI_CTRL, r);
3688 static void dsi_config_blanking_modes(struct platform_device *dsidev)
3690 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3691 int blanking_mode = dsi->vm_timings.blanking_mode;
3692 int hfp_blanking_mode = dsi->vm_timings.hfp_blanking_mode;
3693 int hbp_blanking_mode = dsi->vm_timings.hbp_blanking_mode;
3694 int hsa_blanking_mode = dsi->vm_timings.hsa_blanking_mode;
3698 * 0 = TX FIFO packets sent or LPS in corresponding blanking periods
3699 * 1 = Long blanking packets are sent in corresponding blanking periods
3701 r = dsi_read_reg(dsidev, DSI_CTRL);
3702 r = FLD_MOD(r, blanking_mode, 20, 20); /* BLANKING_MODE */
3703 r = FLD_MOD(r, hfp_blanking_mode, 21, 21); /* HFP_BLANKING */
3704 r = FLD_MOD(r, hbp_blanking_mode, 22, 22); /* HBP_BLANKING */
3705 r = FLD_MOD(r, hsa_blanking_mode, 23, 23); /* HSA_BLANKING */
3706 dsi_write_reg(dsidev, DSI_CTRL, r);
3710 * According to section 'HS Command Mode Interleaving' in OMAP TRM, Scenario 3
3711 * results in maximum transition time for data and clock lanes to enter and
3712 * exit HS mode. Hence, this is the scenario where the least amount of command
3713 * mode data can be interleaved. We program the minimum amount of TXBYTECLKHS
3714 * clock cycles that can be used to interleave command mode data in HS so that
3715 * all scenarios are satisfied.
3717 static int dsi_compute_interleave_hs(int blank, bool ddr_alwon, int enter_hs,
3718 int exit_hs, int exiths_clk, int ddr_pre, int ddr_post)
3723 * If DDR_CLK_ALWAYS_ON is set, we need to consider HS mode transition
3724 * time of data lanes only, if it isn't set, we need to consider HS
3725 * transition time of both data and clock lanes. HS transition time
3726 * of Scenario 3 is considered.
3729 transition = enter_hs + exit_hs + max(enter_hs, 2) + 1;
3732 trans1 = ddr_pre + enter_hs + exit_hs + max(enter_hs, 2) + 1;
3733 trans2 = ddr_pre + enter_hs + exiths_clk + ddr_post + ddr_pre +
3735 transition = max(trans1, trans2);
3738 return blank > transition ? blank - transition : 0;
3742 * According to section 'LP Command Mode Interleaving' in OMAP TRM, Scenario 1
3743 * results in maximum transition time for data lanes to enter and exit LP mode.
3744 * Hence, this is the scenario where the least amount of command mode data can
3745 * be interleaved. We program the minimum amount of bytes that can be
3746 * interleaved in LP so that all scenarios are satisfied.
3748 static int dsi_compute_interleave_lp(int blank, int enter_hs, int exit_hs,
3749 int lp_clk_div, int tdsi_fclk)
3751 int trans_lp; /* time required for a LP transition, in TXBYTECLKHS */
3752 int tlp_avail; /* time left for interleaving commands, in CLKIN4DDR */
3753 int ttxclkesc; /* period of LP transmit escape clock, in CLKIN4DDR */
3754 int thsbyte_clk = 16; /* Period of TXBYTECLKHS clock, in CLKIN4DDR */
3755 int lp_inter; /* cmd mode data that can be interleaved, in bytes */
3757 /* maximum LP transition time according to Scenario 1 */
3758 trans_lp = exit_hs + max(enter_hs, 2) + 1;
3760 /* CLKIN4DDR = 16 * TXBYTECLKHS */
3761 tlp_avail = thsbyte_clk * (blank - trans_lp);
3763 ttxclkesc = tdsi_fclk * lp_clk_div;
3765 lp_inter = ((tlp_avail - 8 * thsbyte_clk - 5 * tdsi_fclk) / ttxclkesc -
3768 return max(lp_inter, 0);
3771 static void dsi_config_cmd_mode_interleaving(struct platform_device *dsidev)
3773 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3775 int hfp_blanking_mode, hbp_blanking_mode, hsa_blanking_mode;
3776 int hsa, hfp, hbp, width_bytes, bllp, lp_clk_div;
3777 int ddr_clk_pre, ddr_clk_post, enter_hs_mode_lat, exit_hs_mode_lat;
3778 int tclk_trail, ths_exit, exiths_clk;
3780 struct omap_video_timings *timings = &dsi->timings;
3781 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3782 int ndl = dsi->num_lanes_used - 1;
3783 int dsi_fclk_hsdiv = dsi->user_dsi_cinfo.regm_dsi + 1;
3784 int hsa_interleave_hs = 0, hsa_interleave_lp = 0;
3785 int hfp_interleave_hs = 0, hfp_interleave_lp = 0;
3786 int hbp_interleave_hs = 0, hbp_interleave_lp = 0;
3787 int bl_interleave_hs = 0, bl_interleave_lp = 0;
3790 r = dsi_read_reg(dsidev, DSI_CTRL);
3791 blanking_mode = FLD_GET(r, 20, 20);
3792 hfp_blanking_mode = FLD_GET(r, 21, 21);
3793 hbp_blanking_mode = FLD_GET(r, 22, 22);
3794 hsa_blanking_mode = FLD_GET(r, 23, 23);
3796 r = dsi_read_reg(dsidev, DSI_VM_TIMING1);
3797 hbp = FLD_GET(r, 11, 0);
3798 hfp = FLD_GET(r, 23, 12);
3799 hsa = FLD_GET(r, 31, 24);
3801 r = dsi_read_reg(dsidev, DSI_CLK_TIMING);
3802 ddr_clk_post = FLD_GET(r, 7, 0);
3803 ddr_clk_pre = FLD_GET(r, 15, 8);
3805 r = dsi_read_reg(dsidev, DSI_VM_TIMING7);
3806 exit_hs_mode_lat = FLD_GET(r, 15, 0);
3807 enter_hs_mode_lat = FLD_GET(r, 31, 16);
3809 r = dsi_read_reg(dsidev, DSI_CLK_CTRL);
3810 lp_clk_div = FLD_GET(r, 12, 0);
3811 ddr_alwon = FLD_GET(r, 13, 13);
3813 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0);
3814 ths_exit = FLD_GET(r, 7, 0);
3816 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1);
3817 tclk_trail = FLD_GET(r, 15, 8);
3819 exiths_clk = ths_exit + tclk_trail;
3821 width_bytes = DIV_ROUND_UP(timings->x_res * bpp, 8);
3822 bllp = hbp + hfp + hsa + DIV_ROUND_UP(width_bytes + 6, ndl);
3824 if (!hsa_blanking_mode) {
3825 hsa_interleave_hs = dsi_compute_interleave_hs(hsa, ddr_alwon,
3826 enter_hs_mode_lat, exit_hs_mode_lat,
3827 exiths_clk, ddr_clk_pre, ddr_clk_post);
3828 hsa_interleave_lp = dsi_compute_interleave_lp(hsa,
3829 enter_hs_mode_lat, exit_hs_mode_lat,
3830 lp_clk_div, dsi_fclk_hsdiv);
3833 if (!hfp_blanking_mode) {
3834 hfp_interleave_hs = dsi_compute_interleave_hs(hfp, ddr_alwon,
3835 enter_hs_mode_lat, exit_hs_mode_lat,
3836 exiths_clk, ddr_clk_pre, ddr_clk_post);
3837 hfp_interleave_lp = dsi_compute_interleave_lp(hfp,
3838 enter_hs_mode_lat, exit_hs_mode_lat,
3839 lp_clk_div, dsi_fclk_hsdiv);
3842 if (!hbp_blanking_mode) {
3843 hbp_interleave_hs = dsi_compute_interleave_hs(hbp, ddr_alwon,
3844 enter_hs_mode_lat, exit_hs_mode_lat,
3845 exiths_clk, ddr_clk_pre, ddr_clk_post);
3847 hbp_interleave_lp = dsi_compute_interleave_lp(hbp,
3848 enter_hs_mode_lat, exit_hs_mode_lat,
3849 lp_clk_div, dsi_fclk_hsdiv);
3852 if (!blanking_mode) {
3853 bl_interleave_hs = dsi_compute_interleave_hs(bllp, ddr_alwon,
3854 enter_hs_mode_lat, exit_hs_mode_lat,
3855 exiths_clk, ddr_clk_pre, ddr_clk_post);
3857 bl_interleave_lp = dsi_compute_interleave_lp(bllp,
3858 enter_hs_mode_lat, exit_hs_mode_lat,
3859 lp_clk_div, dsi_fclk_hsdiv);
3862 DSSDBG("DSI HS interleaving(TXBYTECLKHS) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3863 hsa_interleave_hs, hfp_interleave_hs, hbp_interleave_hs,
3866 DSSDBG("DSI LP interleaving(bytes) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3867 hsa_interleave_lp, hfp_interleave_lp, hbp_interleave_lp,
3870 r = dsi_read_reg(dsidev, DSI_VM_TIMING4);
3871 r = FLD_MOD(r, hsa_interleave_hs, 23, 16);
3872 r = FLD_MOD(r, hfp_interleave_hs, 15, 8);
3873 r = FLD_MOD(r, hbp_interleave_hs, 7, 0);
3874 dsi_write_reg(dsidev, DSI_VM_TIMING4, r);
3876 r = dsi_read_reg(dsidev, DSI_VM_TIMING5);
3877 r = FLD_MOD(r, hsa_interleave_lp, 23, 16);
3878 r = FLD_MOD(r, hfp_interleave_lp, 15, 8);
3879 r = FLD_MOD(r, hbp_interleave_lp, 7, 0);
3880 dsi_write_reg(dsidev, DSI_VM_TIMING5, r);
3882 r = dsi_read_reg(dsidev, DSI_VM_TIMING6);
3883 r = FLD_MOD(r, bl_interleave_hs, 31, 15);
3884 r = FLD_MOD(r, bl_interleave_lp, 16, 0);
3885 dsi_write_reg(dsidev, DSI_VM_TIMING6, r);
3888 static int dsi_proto_config(struct platform_device *dsidev)
3890 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3894 dsi_config_tx_fifo(dsidev, DSI_FIFO_SIZE_32,
3899 dsi_config_rx_fifo(dsidev, DSI_FIFO_SIZE_32,
3904 /* XXX what values for the timeouts? */
3905 dsi_set_stop_state_counter(dsidev, 0x1000, false, false);
3906 dsi_set_ta_timeout(dsidev, 0x1fff, true, true);
3907 dsi_set_lp_rx_timeout(dsidev, 0x1fff, true, true);
3908 dsi_set_hs_tx_timeout(dsidev, 0x1fff, true, true);
3910 switch (dsi_get_pixel_size(dsi->pix_fmt)) {
3925 r = dsi_read_reg(dsidev, DSI_CTRL);
3926 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
3927 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
3928 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
3929 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
3930 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
3931 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
3932 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
3933 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
3934 if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) {
3935 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
3936 /* DCS_CMD_CODE, 1=start, 0=continue */
3937 r = FLD_MOD(r, 0, 25, 25);
3940 dsi_write_reg(dsidev, DSI_CTRL, r);
3942 dsi_config_vp_num_line_buffers(dsidev);
3944 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3945 dsi_config_vp_sync_events(dsidev);
3946 dsi_config_blanking_modes(dsidev);
3947 dsi_config_cmd_mode_interleaving(dsidev);
3950 dsi_vc_initial_config(dsidev, 0);
3951 dsi_vc_initial_config(dsidev, 1);
3952 dsi_vc_initial_config(dsidev, 2);
3953 dsi_vc_initial_config(dsidev, 3);
3958 static void dsi_proto_timings(struct platform_device *dsidev)
3960 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
3961 unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail;
3962 unsigned tclk_pre, tclk_post;
3963 unsigned ths_prepare, ths_prepare_ths_zero, ths_zero;
3964 unsigned ths_trail, ths_exit;
3965 unsigned ddr_clk_pre, ddr_clk_post;
3966 unsigned enter_hs_mode_lat, exit_hs_mode_lat;
3968 int ndl = dsi->num_lanes_used - 1;
3971 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0);
3972 ths_prepare = FLD_GET(r, 31, 24);
3973 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
3974 ths_zero = ths_prepare_ths_zero - ths_prepare;
3975 ths_trail = FLD_GET(r, 15, 8);
3976 ths_exit = FLD_GET(r, 7, 0);
3978 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1);
3979 tlpx = FLD_GET(r, 20, 16) * 2;
3980 tclk_trail = FLD_GET(r, 15, 8);
3981 tclk_zero = FLD_GET(r, 7, 0);
3983 r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG2);
3984 tclk_prepare = FLD_GET(r, 7, 0);
3988 /* min 60ns + 52*UI */
3989 tclk_post = ns2ddr(dsidev, 60) + 26;
3991 ths_eot = DIV_ROUND_UP(4, ndl);
3993 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
3995 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
3997 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
3998 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
4000 r = dsi_read_reg(dsidev, DSI_CLK_TIMING);
4001 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
4002 r = FLD_MOD(r, ddr_clk_post, 7, 0);
4003 dsi_write_reg(dsidev, DSI_CLK_TIMING, r);
4005 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
4009 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
4010 DIV_ROUND_UP(ths_prepare, 4) +
4011 DIV_ROUND_UP(ths_zero + 3, 4);
4013 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
4015 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
4016 FLD_VAL(exit_hs_mode_lat, 15, 0);
4017 dsi_write_reg(dsidev, DSI_VM_TIMING7, r);
4019 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
4020 enter_hs_mode_lat, exit_hs_mode_lat);
4022 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
4023 /* TODO: Implement a video mode check_timings function */
4024 int hsa = dsi->vm_timings.hsa;
4025 int hfp = dsi->vm_timings.hfp;
4026 int hbp = dsi->vm_timings.hbp;
4027 int vsa = dsi->vm_timings.vsa;
4028 int vfp = dsi->vm_timings.vfp;
4029 int vbp = dsi->vm_timings.vbp;
4030 int window_sync = dsi->vm_timings.window_sync;
4032 struct omap_video_timings *timings = &dsi->timings;
4033 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
4034 int tl, t_he, width_bytes;
4036 hsync_end = dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE;
4038 ((hsa == 0 && ndl == 3) ? 1 : DIV_ROUND_UP(4, ndl)) : 0;
4040 width_bytes = DIV_ROUND_UP(timings->x_res * bpp, 8);
4042 /* TL = t_HS + HSA + t_HE + HFP + ceil((WC + 6) / NDL) + HBP */
4043 tl = DIV_ROUND_UP(4, ndl) + (hsync_end ? hsa : 0) + t_he + hfp +
4044 DIV_ROUND_UP(width_bytes + 6, ndl) + hbp;
4046 DSSDBG("HBP: %d, HFP: %d, HSA: %d, TL: %d TXBYTECLKHS\n", hbp,
4047 hfp, hsync_end ? hsa : 0, tl);
4048 DSSDBG("VBP: %d, VFP: %d, VSA: %d, VACT: %d lines\n", vbp, vfp,
4049 vsa, timings->y_res);
4051 r = dsi_read_reg(dsidev, DSI_VM_TIMING1);
4052 r = FLD_MOD(r, hbp, 11, 0); /* HBP */
4053 r = FLD_MOD(r, hfp, 23, 12); /* HFP */
4054 r = FLD_MOD(r, hsync_end ? hsa : 0, 31, 24); /* HSA */
4055 dsi_write_reg(dsidev, DSI_VM_TIMING1, r);
4057 r = dsi_read_reg(dsidev, DSI_VM_TIMING2);
4058 r = FLD_MOD(r, vbp, 7, 0); /* VBP */
4059 r = FLD_MOD(r, vfp, 15, 8); /* VFP */
4060 r = FLD_MOD(r, vsa, 23, 16); /* VSA */
4061 r = FLD_MOD(r, window_sync, 27, 24); /* WINDOW_SYNC */
4062 dsi_write_reg(dsidev, DSI_VM_TIMING2, r);
4064 r = dsi_read_reg(dsidev, DSI_VM_TIMING3);
4065 r = FLD_MOD(r, timings->y_res, 14, 0); /* VACT */
4066 r = FLD_MOD(r, tl, 31, 16); /* TL */
4067 dsi_write_reg(dsidev, DSI_VM_TIMING3, r);
4071 int omapdss_dsi_configure_pins(struct omap_dss_device *dssdev,
4072 const struct omap_dsi_pin_config *pin_cfg)
4074 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4075 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4078 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
4082 static const enum dsi_lane_function functions[] = {
4090 num_pins = pin_cfg->num_pins;
4091 pins = pin_cfg->pins;
4093 if (num_pins < 4 || num_pins > dsi->num_lanes_supported * 2
4094 || num_pins % 2 != 0)
4097 for (i = 0; i < DSI_MAX_NR_LANES; ++i)
4098 lanes[i].function = DSI_LANE_UNUSED;
4102 for (i = 0; i < num_pins; i += 2) {
4109 if (dx < 0 || dx >= dsi->num_lanes_supported * 2)
4112 if (dy < 0 || dy >= dsi->num_lanes_supported * 2)
4127 lanes[lane].function = functions[i / 2];
4128 lanes[lane].polarity = pol;
4132 memcpy(dsi->lanes, lanes, sizeof(dsi->lanes));
4133 dsi->num_lanes_used = num_lanes;
4137 EXPORT_SYMBOL(omapdss_dsi_configure_pins);
4139 int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
4141 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4142 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4143 struct omap_overlay_manager *mgr = dsi->output.manager;
4144 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
4145 struct omap_dss_device *out = &dsi->output;
4150 if (out == NULL || out->manager == NULL) {
4151 DSSERR("failed to enable display: no output/manager\n");
4155 r = dsi_display_init_dispc(dsidev, mgr);
4157 goto err_init_dispc;
4159 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
4160 switch (dsi->pix_fmt) {
4161 case OMAP_DSS_DSI_FMT_RGB888:
4162 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_24;
4164 case OMAP_DSS_DSI_FMT_RGB666:
4165 data_type = MIPI_DSI_PIXEL_STREAM_3BYTE_18;
4167 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
4168 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_18;
4170 case OMAP_DSS_DSI_FMT_RGB565:
4171 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16;
4178 dsi_if_enable(dsidev, false);
4179 dsi_vc_enable(dsidev, channel, false);
4181 /* MODE, 1 = video mode */
4182 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 4, 4);
4184 word_count = DIV_ROUND_UP(dsi->timings.x_res * bpp, 8);
4186 dsi_vc_write_long_header(dsidev, channel, data_type,
4189 dsi_vc_enable(dsidev, channel, true);
4190 dsi_if_enable(dsidev, true);
4193 r = dss_mgr_enable(mgr);
4195 goto err_mgr_enable;
4200 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
4201 dsi_if_enable(dsidev, false);
4202 dsi_vc_enable(dsidev, channel, false);
4205 dsi_display_uninit_dispc(dsidev, mgr);
4209 EXPORT_SYMBOL(dsi_enable_video_output);
4211 void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel)
4213 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4214 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4215 struct omap_overlay_manager *mgr = dsi->output.manager;
4217 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
4218 dsi_if_enable(dsidev, false);
4219 dsi_vc_enable(dsidev, channel, false);
4221 /* MODE, 0 = command mode */
4222 REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 0, 4, 4);
4224 dsi_vc_enable(dsidev, channel, true);
4225 dsi_if_enable(dsidev, true);
4228 dss_mgr_disable(mgr);
4230 dsi_display_uninit_dispc(dsidev, mgr);
4232 EXPORT_SYMBOL(dsi_disable_video_output);
4234 static void dsi_update_screen_dispc(struct platform_device *dsidev)
4236 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4237 struct omap_overlay_manager *mgr = dsi->output.manager;
4242 unsigned packet_payload;
4243 unsigned packet_len;
4246 const unsigned channel = dsi->update_channel;
4247 const unsigned line_buf_size = dsi->line_buffer_size;
4248 u16 w = dsi->timings.x_res;
4249 u16 h = dsi->timings.y_res;
4251 DSSDBG("dsi_update_screen_dispc(%dx%d)\n", w, h);
4253 dsi_vc_config_source(dsidev, channel, DSI_VC_SOURCE_VP);
4255 bytespp = dsi_get_pixel_size(dsi->pix_fmt) / 8;
4256 bytespl = w * bytespp;
4257 bytespf = bytespl * h;
4259 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
4260 * number of lines in a packet. See errata about VP_CLK_RATIO */
4262 if (bytespf < line_buf_size)
4263 packet_payload = bytespf;
4265 packet_payload = (line_buf_size) / bytespl * bytespl;
4267 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
4268 total_len = (bytespf / packet_payload) * packet_len;
4270 if (bytespf % packet_payload)
4271 total_len += (bytespf % packet_payload) + 1;
4273 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
4274 dsi_write_reg(dsidev, DSI_VC_TE(channel), l);
4276 dsi_vc_write_long_header(dsidev, channel, MIPI_DSI_DCS_LONG_WRITE,
4279 if (dsi->te_enabled)
4280 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
4282 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
4283 dsi_write_reg(dsidev, DSI_VC_TE(channel), l);
4285 /* We put SIDLEMODE to no-idle for the duration of the transfer,
4286 * because DSS interrupts are not capable of waking up the CPU and the
4287 * framedone interrupt could be delayed for quite a long time. I think
4288 * the same goes for any DSS interrupts, but for some reason I have not
4289 * seen the problem anywhere else than here.
4291 dispc_disable_sidle();
4293 dsi_perf_mark_start(dsidev);
4295 r = schedule_delayed_work(&dsi->framedone_timeout_work,
4296 msecs_to_jiffies(250));
4299 dss_mgr_set_timings(mgr, &dsi->timings);
4301 dss_mgr_start_update(mgr);
4303 if (dsi->te_enabled) {
4304 /* disable LP_RX_TO, so that we can receive TE. Time to wait
4305 * for TE is longer than the timer allows */
4306 REG_FLD_MOD(dsidev, DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
4308 dsi_vc_send_bta(dsidev, channel);
4310 #ifdef DSI_CATCH_MISSING_TE
4311 mod_timer(&dsi->te_timer, jiffies + msecs_to_jiffies(250));
4316 #ifdef DSI_CATCH_MISSING_TE
4317 static void dsi_te_timeout(unsigned long arg)
4319 DSSERR("TE not received for 250ms!\n");
4323 static void dsi_handle_framedone(struct platform_device *dsidev, int error)
4325 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4327 /* SIDLEMODE back to smart-idle */
4328 dispc_enable_sidle();
4330 if (dsi->te_enabled) {
4331 /* enable LP_RX_TO again after the TE */
4332 REG_FLD_MOD(dsidev, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
4335 dsi->framedone_callback(error, dsi->framedone_data);
4338 dsi_perf_show(dsidev, "DISPC");
4341 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
4343 struct dsi_data *dsi = container_of(work, struct dsi_data,
4344 framedone_timeout_work.work);
4345 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
4346 * 250ms which would conflict with this timeout work. What should be
4347 * done is first cancel the transfer on the HW, and then cancel the
4348 * possibly scheduled framedone work. However, cancelling the transfer
4349 * on the HW is buggy, and would probably require resetting the whole
4352 DSSERR("Framedone not received for 250ms!\n");
4354 dsi_handle_framedone(dsi->pdev, -ETIMEDOUT);
4357 static void dsi_framedone_irq_callback(void *data)
4359 struct platform_device *dsidev = (struct platform_device *) data;
4360 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4362 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
4363 * turns itself off. However, DSI still has the pixels in its buffers,
4364 * and is sending the data.
4367 cancel_delayed_work(&dsi->framedone_timeout_work);
4369 dsi_handle_framedone(dsidev, 0);
4372 int omap_dsi_update(struct omap_dss_device *dssdev, int channel,
4373 void (*callback)(int, void *), void *data)
4375 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4376 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4379 dsi_perf_mark_setup(dsidev);
4381 dsi->update_channel = channel;
4383 dsi->framedone_callback = callback;
4384 dsi->framedone_data = data;
4386 dw = dsi->timings.x_res;
4387 dh = dsi->timings.y_res;
4390 dsi->update_bytes = dw * dh *
4391 dsi_get_pixel_size(dsi->pix_fmt) / 8;
4393 dsi_update_screen_dispc(dsidev);
4397 EXPORT_SYMBOL(omap_dsi_update);
4401 static int dsi_configure_dispc_clocks(struct platform_device *dsidev)
4403 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4404 struct dispc_clock_info dispc_cinfo;
4408 fck = dsi_get_pll_hsdiv_dispc_rate(dsidev);
4410 dispc_cinfo.lck_div = dsi->user_dispc_cinfo.lck_div;
4411 dispc_cinfo.pck_div = dsi->user_dispc_cinfo.pck_div;
4413 r = dispc_calc_clock_rates(fck, &dispc_cinfo);
4415 DSSERR("Failed to calc dispc clocks\n");
4419 dsi->mgr_config.clock_info = dispc_cinfo;
4424 static int dsi_display_init_dispc(struct platform_device *dsidev,
4425 struct omap_overlay_manager *mgr)
4427 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4430 dss_select_lcd_clk_source(mgr->id, dsi->module_id == 0 ?
4431 OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC :
4432 OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC);
4434 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) {
4435 r = dss_mgr_register_framedone_handler(mgr,
4436 dsi_framedone_irq_callback, dsidev);
4438 DSSERR("can't register FRAMEDONE handler\n");
4442 dsi->mgr_config.stallmode = true;
4443 dsi->mgr_config.fifohandcheck = true;
4445 dsi->mgr_config.stallmode = false;
4446 dsi->mgr_config.fifohandcheck = false;
4450 * override interlace, logic level and edge related parameters in
4451 * omap_video_timings with default values
4453 dsi->timings.interlace = false;
4454 dsi->timings.hsync_level = OMAPDSS_SIG_ACTIVE_HIGH;
4455 dsi->timings.vsync_level = OMAPDSS_SIG_ACTIVE_HIGH;
4456 dsi->timings.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
4457 dsi->timings.de_level = OMAPDSS_SIG_ACTIVE_HIGH;
4458 dsi->timings.sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
4460 dss_mgr_set_timings(mgr, &dsi->timings);
4462 r = dsi_configure_dispc_clocks(dsidev);
4466 dsi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
4467 dsi->mgr_config.video_port_width =
4468 dsi_get_pixel_size(dsi->pix_fmt);
4469 dsi->mgr_config.lcden_sig_polarity = 0;
4471 dss_mgr_set_lcd_config(mgr, &dsi->mgr_config);
4475 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4476 dss_mgr_unregister_framedone_handler(mgr,
4477 dsi_framedone_irq_callback, dsidev);
4479 dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK);
4483 static void dsi_display_uninit_dispc(struct platform_device *dsidev,
4484 struct omap_overlay_manager *mgr)
4486 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4488 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4489 dss_mgr_unregister_framedone_handler(mgr,
4490 dsi_framedone_irq_callback, dsidev);
4492 dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK);
4495 static int dsi_configure_dsi_clocks(struct platform_device *dsidev)
4497 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4498 struct dsi_clock_info cinfo;
4501 cinfo = dsi->user_dsi_cinfo;
4503 r = dsi_calc_clock_rates(dsidev, &cinfo);
4505 DSSERR("Failed to calc dsi clocks\n");
4509 r = dsi_pll_set_clock_div(dsidev, &cinfo);
4511 DSSERR("Failed to set dsi clocks\n");
4518 static int dsi_display_init_dsi(struct platform_device *dsidev)
4520 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4523 r = dsi_pll_init(dsidev, true, true);
4527 r = dsi_configure_dsi_clocks(dsidev);
4531 dss_select_dsi_clk_source(dsi->module_id, dsi->module_id == 0 ?
4532 OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI :
4533 OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI);
4537 r = dsi_cio_init(dsidev);
4541 _dsi_print_reset_status(dsidev);
4543 dsi_proto_timings(dsidev);
4544 dsi_set_lp_clk_divisor(dsidev);
4547 _dsi_print_reset_status(dsidev);
4549 r = dsi_proto_config(dsidev);
4553 /* enable interface */
4554 dsi_vc_enable(dsidev, 0, 1);
4555 dsi_vc_enable(dsidev, 1, 1);
4556 dsi_vc_enable(dsidev, 2, 1);
4557 dsi_vc_enable(dsidev, 3, 1);
4558 dsi_if_enable(dsidev, 1);
4559 dsi_force_tx_stop_mode_io(dsidev);
4563 dsi_cio_uninit(dsidev);
4565 dss_select_dsi_clk_source(dsi->module_id, OMAP_DSS_CLK_SRC_FCK);
4567 dsi_pll_uninit(dsidev, true);
4572 static void dsi_display_uninit_dsi(struct platform_device *dsidev,
4573 bool disconnect_lanes, bool enter_ulps)
4575 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4577 if (enter_ulps && !dsi->ulps_enabled)
4578 dsi_enter_ulps(dsidev);
4580 /* disable interface */
4581 dsi_if_enable(dsidev, 0);
4582 dsi_vc_enable(dsidev, 0, 0);
4583 dsi_vc_enable(dsidev, 1, 0);
4584 dsi_vc_enable(dsidev, 2, 0);
4585 dsi_vc_enable(dsidev, 3, 0);
4587 dss_select_dsi_clk_source(dsi->module_id, OMAP_DSS_CLK_SRC_FCK);
4588 dsi_cio_uninit(dsidev);
4589 dsi_pll_uninit(dsidev, disconnect_lanes);
4592 int omapdss_dsi_display_enable(struct omap_dss_device *dssdev)
4594 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4595 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4598 DSSDBG("dsi_display_enable\n");
4600 WARN_ON(!dsi_bus_is_locked(dsidev));
4602 mutex_lock(&dsi->lock);
4604 r = dsi_runtime_get(dsidev);
4608 dsi_enable_pll_clock(dsidev, 1);
4610 _dsi_initialize_irq(dsidev);
4612 r = dsi_display_init_dsi(dsidev);
4616 mutex_unlock(&dsi->lock);
4621 dsi_enable_pll_clock(dsidev, 0);
4622 dsi_runtime_put(dsidev);
4624 mutex_unlock(&dsi->lock);
4625 DSSDBG("dsi_display_enable FAILED\n");
4628 EXPORT_SYMBOL(omapdss_dsi_display_enable);
4630 void omapdss_dsi_display_disable(struct omap_dss_device *dssdev,
4631 bool disconnect_lanes, bool enter_ulps)
4633 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4634 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4636 DSSDBG("dsi_display_disable\n");
4638 WARN_ON(!dsi_bus_is_locked(dsidev));
4640 mutex_lock(&dsi->lock);
4642 dsi_sync_vc(dsidev, 0);
4643 dsi_sync_vc(dsidev, 1);
4644 dsi_sync_vc(dsidev, 2);
4645 dsi_sync_vc(dsidev, 3);
4647 dsi_display_uninit_dsi(dsidev, disconnect_lanes, enter_ulps);
4649 dsi_runtime_put(dsidev);
4650 dsi_enable_pll_clock(dsidev, 0);
4652 mutex_unlock(&dsi->lock);
4654 EXPORT_SYMBOL(omapdss_dsi_display_disable);
4656 int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
4658 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
4659 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
4661 dsi->te_enabled = enable;
4664 EXPORT_SYMBOL(omapdss_dsi_enable_te);
4666 #ifdef PRINT_VERBOSE_VM_TIMINGS
4667 static void print_dsi_vm(const char *str,
4668 const struct omap_dss_dsi_videomode_timings *t)
4670 unsigned long byteclk = t->hsclk / 4;
4671 int bl, wc, pps, tot;
4673 wc = DIV_ROUND_UP(t->hact * t->bitspp, 8);
4674 pps = DIV_ROUND_UP(wc + 6, t->ndl); /* pixel packet size */
4675 bl = t->hss + t->hsa + t->hse + t->hbp + t->hfp;
4678 #define TO_DSI_T(x) ((u32)div64_u64((u64)x * 1000000000llu, byteclk))
4680 pr_debug("%s bck %lu, %u/%u/%u/%u/%u/%u = %u+%u = %u, "
4681 "%u/%u/%u/%u/%u/%u = %u + %u = %u\n",
4684 t->hss, t->hsa, t->hse, t->hbp, pps, t->hfp,
4700 static void print_dispc_vm(const char *str, const struct omap_video_timings *t)
4702 unsigned long pck = t->pixel_clock * 1000;
4706 bl = t->hsw + t->hbp + t->hfp;
4709 #define TO_DISPC_T(x) ((u32)div64_u64((u64)x * 1000000000llu, pck))
4711 pr_debug("%s pck %lu, %u/%u/%u/%u = %u+%u = %u, "
4712 "%u/%u/%u/%u = %u + %u = %u\n",
4715 t->hsw, t->hbp, hact, t->hfp,
4727 /* note: this is not quite accurate */
4728 static void print_dsi_dispc_vm(const char *str,
4729 const struct omap_dss_dsi_videomode_timings *t)
4731 struct omap_video_timings vm = { 0 };
4732 unsigned long byteclk = t->hsclk / 4;
4735 int dsi_hact, dsi_htot;
4737 dsi_tput = (u64)byteclk * t->ndl * 8;
4738 pck = (u32)div64_u64(dsi_tput, t->bitspp);
4739 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(t->hact * t->bitspp, 8) + 6, t->ndl);
4740 dsi_htot = t->hss + t->hsa + t->hse + t->hbp + dsi_hact + t->hfp;
4742 vm.pixel_clock = pck / 1000;
4743 vm.hsw = div64_u64((u64)(t->hsa + t->hse) * pck, byteclk);
4744 vm.hbp = div64_u64((u64)t->hbp * pck, byteclk);
4745 vm.hfp = div64_u64((u64)t->hfp * pck, byteclk);
4748 print_dispc_vm(str, &vm);
4750 #endif /* PRINT_VERBOSE_VM_TIMINGS */
4752 static bool dsi_cm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4753 unsigned long pck, void *data)
4755 struct dsi_clk_calc_ctx *ctx = data;
4756 struct omap_video_timings *t = &ctx->dispc_vm;
4758 ctx->dispc_cinfo.lck_div = lckd;
4759 ctx->dispc_cinfo.pck_div = pckd;
4760 ctx->dispc_cinfo.lck = lck;
4761 ctx->dispc_cinfo.pck = pck;
4763 *t = *ctx->config->timings;
4764 t->pixel_clock = pck / 1000;
4765 t->x_res = ctx->config->timings->x_res;
4766 t->y_res = ctx->config->timings->y_res;
4767 t->hsw = t->hfp = t->hbp = t->vsw = 1;
4768 t->vfp = t->vbp = 0;
4773 static bool dsi_cm_calc_hsdiv_cb(int regm_dispc, unsigned long dispc,
4776 struct dsi_clk_calc_ctx *ctx = data;
4778 ctx->dsi_cinfo.regm_dispc = regm_dispc;
4779 ctx->dsi_cinfo.dsi_pll_hsdiv_dispc_clk = dispc;
4781 return dispc_div_calc(dispc, ctx->req_pck_min, ctx->req_pck_max,
4782 dsi_cm_calc_dispc_cb, ctx);
4785 static bool dsi_cm_calc_pll_cb(int regn, int regm, unsigned long fint,
4786 unsigned long pll, void *data)
4788 struct dsi_clk_calc_ctx *ctx = data;
4790 ctx->dsi_cinfo.regn = regn;
4791 ctx->dsi_cinfo.regm = regm;
4792 ctx->dsi_cinfo.fint = fint;
4793 ctx->dsi_cinfo.clkin4ddr = pll;
4795 return dsi_hsdiv_calc(ctx->dsidev, pll, ctx->req_pck_min,
4796 dsi_cm_calc_hsdiv_cb, ctx);
4799 static bool dsi_cm_calc(struct dsi_data *dsi,
4800 const struct omap_dss_dsi_config *cfg,
4801 struct dsi_clk_calc_ctx *ctx)
4803 unsigned long clkin;
4805 unsigned long pll_min, pll_max;
4806 unsigned long pck, txbyteclk;
4808 clkin = clk_get_rate(dsi->sys_clk);
4809 bitspp = dsi_get_pixel_size(cfg->pixel_format);
4810 ndl = dsi->num_lanes_used - 1;
4813 * Here we should calculate minimum txbyteclk to be able to send the
4814 * frame in time, and also to handle TE. That's not very simple, though,
4815 * especially as we go to LP between each pixel packet due to HW
4816 * "feature". So let's just estimate very roughly and multiply by 1.5.
4818 pck = cfg->timings->pixel_clock * 1000;
4820 txbyteclk = pck * bitspp / 8 / ndl;
4822 memset(ctx, 0, sizeof(*ctx));
4823 ctx->dsidev = dsi->pdev;
4825 ctx->req_pck_min = pck;
4826 ctx->req_pck_nom = pck;
4827 ctx->req_pck_max = pck * 3 / 2;
4828 ctx->dsi_cinfo.clkin = clkin;
4830 pll_min = max(cfg->hs_clk_min * 4, txbyteclk * 4 * 4);
4831 pll_max = cfg->hs_clk_max * 4;
4833 return dsi_pll_calc(dsi->pdev, clkin,
4835 dsi_cm_calc_pll_cb, ctx);
4838 static bool dsi_vm_calc_blanking(struct dsi_clk_calc_ctx *ctx)
4840 struct dsi_data *dsi = dsi_get_dsidrv_data(ctx->dsidev);
4841 const struct omap_dss_dsi_config *cfg = ctx->config;
4842 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4843 int ndl = dsi->num_lanes_used - 1;
4844 unsigned long hsclk = ctx->dsi_cinfo.clkin4ddr / 4;
4845 unsigned long byteclk = hsclk / 4;
4847 unsigned long dispc_pck, req_pck_min, req_pck_nom, req_pck_max;
4849 int panel_htot, panel_hbl; /* pixels */
4850 int dispc_htot, dispc_hbl; /* pixels */
4851 int dsi_htot, dsi_hact, dsi_hbl, hss, hse; /* byteclks */
4853 const struct omap_video_timings *req_vm;
4854 struct omap_video_timings *dispc_vm;
4855 struct omap_dss_dsi_videomode_timings *dsi_vm;
4856 u64 dsi_tput, dispc_tput;
4858 dsi_tput = (u64)byteclk * ndl * 8;
4860 req_vm = cfg->timings;
4861 req_pck_min = ctx->req_pck_min;
4862 req_pck_max = ctx->req_pck_max;
4863 req_pck_nom = ctx->req_pck_nom;
4865 dispc_pck = ctx->dispc_cinfo.pck;
4866 dispc_tput = (u64)dispc_pck * bitspp;
4868 xres = req_vm->x_res;
4870 panel_hbl = req_vm->hfp + req_vm->hbp + req_vm->hsw;
4871 panel_htot = xres + panel_hbl;
4873 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(xres * bitspp, 8) + 6, ndl);
4876 * When there are no line buffers, DISPC and DSI must have the
4877 * same tput. Otherwise DISPC tput needs to be higher than DSI's.
4879 if (dsi->line_buffer_size < xres * bitspp / 8) {
4880 if (dispc_tput != dsi_tput)
4883 if (dispc_tput < dsi_tput)
4887 /* DSI tput must be over the min requirement */
4888 if (dsi_tput < (u64)bitspp * req_pck_min)
4891 /* When non-burst mode, DSI tput must be below max requirement. */
4892 if (cfg->trans_mode != OMAP_DSS_DSI_BURST_MODE) {
4893 if (dsi_tput > (u64)bitspp * req_pck_max)
4897 hss = DIV_ROUND_UP(4, ndl);
4899 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4900 if (ndl == 3 && req_vm->hsw == 0)
4903 hse = DIV_ROUND_UP(4, ndl);
4908 /* DSI htot to match the panel's nominal pck */
4909 dsi_htot = div64_u64((u64)panel_htot * byteclk, req_pck_nom);
4911 /* fail if there would be no time for blanking */
4912 if (dsi_htot < hss + hse + dsi_hact)
4915 /* total DSI blanking needed to achieve panel's TL */
4916 dsi_hbl = dsi_htot - dsi_hact;
4918 /* DISPC htot to match the DSI TL */
4919 dispc_htot = div64_u64((u64)dsi_htot * dispc_pck, byteclk);
4921 /* verify that the DSI and DISPC TLs are the same */
4922 if ((u64)dsi_htot * dispc_pck != (u64)dispc_htot * byteclk)
4925 dispc_hbl = dispc_htot - xres;
4927 /* setup DSI videomode */
4929 dsi_vm = &ctx->dsi_vm;
4930 memset(dsi_vm, 0, sizeof(*dsi_vm));
4932 dsi_vm->hsclk = hsclk;
4935 dsi_vm->bitspp = bitspp;
4937 if (cfg->trans_mode != OMAP_DSS_DSI_PULSE_MODE) {
4939 } else if (ndl == 3 && req_vm->hsw == 0) {
4942 hsa = div64_u64((u64)req_vm->hsw * byteclk, req_pck_nom);
4943 hsa = max(hsa - hse, 1);
4946 hbp = div64_u64((u64)req_vm->hbp * byteclk, req_pck_nom);
4949 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4952 /* we need to take cycles from hbp */
4955 hbp = max(hbp - t, 1);
4956 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4958 if (hfp < 1 && hsa > 0) {
4959 /* we need to take cycles from hsa */
4961 hsa = max(hsa - t, 1);
4962 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4973 dsi_vm->hact = xres;
4976 dsi_vm->vsa = req_vm->vsw;
4977 dsi_vm->vbp = req_vm->vbp;
4978 dsi_vm->vact = req_vm->y_res;
4979 dsi_vm->vfp = req_vm->vfp;
4981 dsi_vm->trans_mode = cfg->trans_mode;
4983 dsi_vm->blanking_mode = 0;
4984 dsi_vm->hsa_blanking_mode = 1;
4985 dsi_vm->hfp_blanking_mode = 1;
4986 dsi_vm->hbp_blanking_mode = 1;
4988 dsi_vm->ddr_clk_always_on = cfg->ddr_clk_always_on;
4989 dsi_vm->window_sync = 4;
4991 /* setup DISPC videomode */
4993 dispc_vm = &ctx->dispc_vm;
4994 *dispc_vm = *req_vm;
4995 dispc_vm->pixel_clock = dispc_pck / 1000;
4997 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4998 hsa = div64_u64((u64)req_vm->hsw * dispc_pck,
5005 hbp = div64_u64((u64)req_vm->hbp * dispc_pck, req_pck_nom);
5008 hfp = dispc_hbl - hsa - hbp;
5011 /* we need to take cycles from hbp */
5014 hbp = max(hbp - t, 1);
5015 hfp = dispc_hbl - hsa - hbp;
5018 /* we need to take cycles from hsa */
5020 hsa = max(hsa - t, 1);
5021 hfp = dispc_hbl - hsa - hbp;
5028 dispc_vm->hfp = hfp;
5029 dispc_vm->hsw = hsa;
5030 dispc_vm->hbp = hbp;
5036 static bool dsi_vm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
5037 unsigned long pck, void *data)
5039 struct dsi_clk_calc_ctx *ctx = data;
5041 ctx->dispc_cinfo.lck_div = lckd;
5042 ctx->dispc_cinfo.pck_div = pckd;
5043 ctx->dispc_cinfo.lck = lck;
5044 ctx->dispc_cinfo.pck = pck;
5046 if (dsi_vm_calc_blanking(ctx) == false)
5049 #ifdef PRINT_VERBOSE_VM_TIMINGS
5050 print_dispc_vm("dispc", &ctx->dispc_vm);
5051 print_dsi_vm("dsi ", &ctx->dsi_vm);
5052 print_dispc_vm("req ", ctx->config->timings);
5053 print_dsi_dispc_vm("act ", &ctx->dsi_vm);
5059 static bool dsi_vm_calc_hsdiv_cb(int regm_dispc, unsigned long dispc,
5062 struct dsi_clk_calc_ctx *ctx = data;
5063 unsigned long pck_max;
5065 ctx->dsi_cinfo.regm_dispc = regm_dispc;
5066 ctx->dsi_cinfo.dsi_pll_hsdiv_dispc_clk = dispc;
5069 * In burst mode we can let the dispc pck be arbitrarily high, but it
5070 * limits our scaling abilities. So for now, don't aim too high.
5073 if (ctx->config->trans_mode == OMAP_DSS_DSI_BURST_MODE)
5074 pck_max = ctx->req_pck_max + 10000000;
5076 pck_max = ctx->req_pck_max;
5078 return dispc_div_calc(dispc, ctx->req_pck_min, pck_max,
5079 dsi_vm_calc_dispc_cb, ctx);
5082 static bool dsi_vm_calc_pll_cb(int regn, int regm, unsigned long fint,
5083 unsigned long pll, void *data)
5085 struct dsi_clk_calc_ctx *ctx = data;
5087 ctx->dsi_cinfo.regn = regn;
5088 ctx->dsi_cinfo.regm = regm;
5089 ctx->dsi_cinfo.fint = fint;
5090 ctx->dsi_cinfo.clkin4ddr = pll;
5092 return dsi_hsdiv_calc(ctx->dsidev, pll, ctx->req_pck_min,
5093 dsi_vm_calc_hsdiv_cb, ctx);
5096 static bool dsi_vm_calc(struct dsi_data *dsi,
5097 const struct omap_dss_dsi_config *cfg,
5098 struct dsi_clk_calc_ctx *ctx)
5100 const struct omap_video_timings *t = cfg->timings;
5101 unsigned long clkin;
5102 unsigned long pll_min;
5103 unsigned long pll_max;
5104 int ndl = dsi->num_lanes_used - 1;
5105 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
5106 unsigned long byteclk_min;
5108 clkin = clk_get_rate(dsi->sys_clk);
5110 memset(ctx, 0, sizeof(*ctx));
5111 ctx->dsidev = dsi->pdev;
5114 ctx->dsi_cinfo.clkin = clkin;
5116 /* these limits should come from the panel driver */
5117 ctx->req_pck_min = t->pixel_clock * 1000 - 1000;
5118 ctx->req_pck_nom = t->pixel_clock * 1000;
5119 ctx->req_pck_max = t->pixel_clock * 1000 + 1000;
5121 byteclk_min = div64_u64((u64)ctx->req_pck_min * bitspp, ndl * 8);
5122 pll_min = max(cfg->hs_clk_min * 4, byteclk_min * 4 * 4);
5124 if (cfg->trans_mode == OMAP_DSS_DSI_BURST_MODE) {
5125 pll_max = cfg->hs_clk_max * 4;
5127 unsigned long byteclk_max;
5128 byteclk_max = div64_u64((u64)ctx->req_pck_max * bitspp,
5131 pll_max = byteclk_max * 4 * 4;
5134 return dsi_pll_calc(dsi->pdev, clkin,
5136 dsi_vm_calc_pll_cb, ctx);
5139 int omapdss_dsi_set_config(struct omap_dss_device *dssdev,
5140 const struct omap_dss_dsi_config *config)
5142 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
5143 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5144 struct dsi_clk_calc_ctx ctx;
5148 mutex_lock(&dsi->lock);
5150 dsi->pix_fmt = config->pixel_format;
5151 dsi->mode = config->mode;
5153 if (config->mode == OMAP_DSS_DSI_VIDEO_MODE)
5154 ok = dsi_vm_calc(dsi, config, &ctx);
5156 ok = dsi_cm_calc(dsi, config, &ctx);
5159 DSSERR("failed to find suitable DSI clock settings\n");
5164 dsi_pll_calc_dsi_fck(&ctx.dsi_cinfo);
5166 r = dsi_lp_clock_calc(&ctx.dsi_cinfo, config->lp_clk_min,
5167 config->lp_clk_max);
5169 DSSERR("failed to find suitable DSI LP clock settings\n");
5173 dsi->user_dsi_cinfo = ctx.dsi_cinfo;
5174 dsi->user_dispc_cinfo = ctx.dispc_cinfo;
5176 dsi->timings = ctx.dispc_vm;
5177 dsi->vm_timings = ctx.dsi_vm;
5179 mutex_unlock(&dsi->lock);
5183 mutex_unlock(&dsi->lock);
5187 EXPORT_SYMBOL(omapdss_dsi_set_config);
5190 * Return a hardcoded channel for the DSI output. This should work for
5191 * current use cases, but this can be later expanded to either resolve
5192 * the channel in some more dynamic manner, or get the channel as a user
5195 static enum omap_channel dsi_get_channel(int module_id)
5197 switch (omapdss_get_version()) {
5198 case OMAPDSS_VER_OMAP24xx:
5199 DSSWARN("DSI not supported\n");
5200 return OMAP_DSS_CHANNEL_LCD;
5202 case OMAPDSS_VER_OMAP34xx_ES1:
5203 case OMAPDSS_VER_OMAP34xx_ES3:
5204 case OMAPDSS_VER_OMAP3630:
5205 case OMAPDSS_VER_AM35xx:
5206 return OMAP_DSS_CHANNEL_LCD;
5208 case OMAPDSS_VER_OMAP4430_ES1:
5209 case OMAPDSS_VER_OMAP4430_ES2:
5210 case OMAPDSS_VER_OMAP4:
5211 switch (module_id) {
5213 return OMAP_DSS_CHANNEL_LCD;
5215 return OMAP_DSS_CHANNEL_LCD2;
5217 DSSWARN("unsupported module id\n");
5218 return OMAP_DSS_CHANNEL_LCD;
5221 case OMAPDSS_VER_OMAP5:
5222 switch (module_id) {
5224 return OMAP_DSS_CHANNEL_LCD;
5226 return OMAP_DSS_CHANNEL_LCD3;
5228 DSSWARN("unsupported module id\n");
5229 return OMAP_DSS_CHANNEL_LCD;
5233 DSSWARN("unsupported DSS version\n");
5234 return OMAP_DSS_CHANNEL_LCD;
5238 int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
5240 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
5241 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5244 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
5245 if (!dsi->vc[i].dssdev) {
5246 dsi->vc[i].dssdev = dssdev;
5252 DSSERR("cannot get VC for display %s", dssdev->name);
5255 EXPORT_SYMBOL(omap_dsi_request_vc);
5257 int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
5259 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
5260 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5262 if (vc_id < 0 || vc_id > 3) {
5263 DSSERR("VC ID out of range\n");
5267 if (channel < 0 || channel > 3) {
5268 DSSERR("Virtual Channel out of range\n");
5272 if (dsi->vc[channel].dssdev != dssdev) {
5273 DSSERR("Virtual Channel not allocated to display %s\n",
5278 dsi->vc[channel].vc_id = vc_id;
5282 EXPORT_SYMBOL(omap_dsi_set_vc_id);
5284 void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel)
5286 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
5287 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5289 if ((channel >= 0 && channel <= 3) &&
5290 dsi->vc[channel].dssdev == dssdev) {
5291 dsi->vc[channel].dssdev = NULL;
5292 dsi->vc[channel].vc_id = 0;
5295 EXPORT_SYMBOL(omap_dsi_release_vc);
5297 void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev)
5299 if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 7, 1) != 1)
5300 DSSERR("%s (%s) not active\n",
5301 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
5302 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC));
5305 void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev)
5307 if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 8, 1) != 1)
5308 DSSERR("%s (%s) not active\n",
5309 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
5310 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI));
5313 static void dsi_calc_clock_param_ranges(struct platform_device *dsidev)
5315 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5317 dsi->regn_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGN);
5318 dsi->regm_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM);
5319 dsi->regm_dispc_max =
5320 dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DISPC);
5321 dsi->regm_dsi_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DSI);
5322 dsi->fint_min = dss_feat_get_param_min(FEAT_PARAM_DSIPLL_FINT);
5323 dsi->fint_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_FINT);
5324 dsi->lpdiv_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_LPDIV);
5327 static int dsi_get_clocks(struct platform_device *dsidev)
5329 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5332 clk = devm_clk_get(&dsidev->dev, "fck");
5334 DSSERR("can't get fck\n");
5335 return PTR_ERR(clk);
5340 clk = devm_clk_get(&dsidev->dev, "sys_clk");
5342 DSSERR("can't get sys_clk\n");
5343 return PTR_ERR(clk);
5351 static struct omap_dss_device *dsi_find_dssdev(struct platform_device *pdev)
5353 struct omap_dss_board_info *pdata = pdev->dev.platform_data;
5354 struct dsi_data *dsi = dsi_get_dsidrv_data(pdev);
5355 const char *def_disp_name = omapdss_get_default_display_name();
5356 struct omap_dss_device *def_dssdev;
5361 for (i = 0; i < pdata->num_devices; ++i) {
5362 struct omap_dss_device *dssdev = pdata->devices[i];
5364 if (dssdev->type != OMAP_DISPLAY_TYPE_DSI)
5367 if (dssdev->phy.dsi.module != dsi->module_id)
5370 if (def_dssdev == NULL)
5371 def_dssdev = dssdev;
5373 if (def_disp_name != NULL &&
5374 strcmp(dssdev->name, def_disp_name) == 0) {
5375 def_dssdev = dssdev;
5383 static int dsi_probe_pdata(struct platform_device *dsidev)
5385 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5386 struct omap_dss_device *plat_dssdev;
5387 struct omap_dss_device *dssdev;
5390 plat_dssdev = dsi_find_dssdev(dsidev);
5395 r = dsi_regulator_init(dsidev);
5399 dssdev = dss_alloc_and_init_device(&dsidev->dev);
5403 dss_copy_device_pdata(dssdev, plat_dssdev);
5405 r = omapdss_output_set_device(&dsi->output, dssdev);
5407 DSSERR("failed to connect output to new device: %s\n",
5409 dss_put_device(dssdev);
5413 r = dss_add_device(dssdev);
5415 DSSERR("device %s register failed: %d\n", dssdev->name, r);
5416 omapdss_output_unset_device(&dsi->output);
5417 dss_put_device(dssdev);
5424 static int dsi_connect(struct omap_dss_device *dssdev,
5425 struct omap_dss_device *dst)
5427 struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
5428 struct omap_overlay_manager *mgr;
5431 r = dsi_regulator_init(dsidev);
5435 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
5439 r = dss_mgr_connect(mgr, dssdev);
5443 r = omapdss_output_set_device(dssdev, dst);
5445 DSSERR("failed to connect output to new device: %s\n",
5447 dss_mgr_disconnect(mgr, dssdev);
5454 static void dsi_disconnect(struct omap_dss_device *dssdev,
5455 struct omap_dss_device *dst)
5457 WARN_ON(dst != dssdev->device);
5459 if (dst != dssdev->device)
5462 omapdss_output_unset_device(dssdev);
5464 if (dssdev->manager)
5465 dss_mgr_disconnect(dssdev->manager, dssdev);
5468 static const struct omapdss_dsi_ops dsi_ops = {
5469 .connect = dsi_connect,
5470 .disconnect = dsi_disconnect,
5472 .bus_lock = dsi_bus_lock,
5473 .bus_unlock = dsi_bus_unlock,
5475 .enable = omapdss_dsi_display_enable,
5476 .disable = omapdss_dsi_display_disable,
5478 .enable_hs = omapdss_dsi_vc_enable_hs,
5480 .configure_pins = omapdss_dsi_configure_pins,
5481 .set_config = omapdss_dsi_set_config,
5483 .enable_video_output = dsi_enable_video_output,
5484 .disable_video_output = dsi_disable_video_output,
5486 .update = omap_dsi_update,
5488 .enable_te = omapdss_dsi_enable_te,
5490 .request_vc = omap_dsi_request_vc,
5491 .set_vc_id = omap_dsi_set_vc_id,
5492 .release_vc = omap_dsi_release_vc,
5494 .dcs_write = dsi_vc_dcs_write,
5495 .dcs_write_nosync = dsi_vc_dcs_write_nosync,
5496 .dcs_read = dsi_vc_dcs_read,
5498 .gen_write = dsi_vc_generic_write,
5499 .gen_write_nosync = dsi_vc_generic_write_nosync,
5500 .gen_read = dsi_vc_generic_read,
5502 .bta_sync = dsi_vc_send_bta_sync,
5504 .set_max_rx_packet_size = dsi_vc_set_max_rx_packet_size,
5507 static void dsi_init_output(struct platform_device *dsidev)
5509 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5510 struct omap_dss_device *out = &dsi->output;
5512 out->dev = &dsidev->dev;
5513 out->id = dsi->module_id == 0 ?
5514 OMAP_DSS_OUTPUT_DSI1 : OMAP_DSS_OUTPUT_DSI2;
5516 out->output_type = OMAP_DISPLAY_TYPE_DSI;
5517 out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1";
5518 out->dispc_channel = dsi_get_channel(dsi->module_id);
5519 out->ops.dsi = &dsi_ops;
5520 out->owner = THIS_MODULE;
5522 omapdss_register_output(out);
5525 static void dsi_uninit_output(struct platform_device *dsidev)
5527 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5528 struct omap_dss_device *out = &dsi->output;
5530 omapdss_unregister_output(out);
5533 /* DSI1 HW IP initialisation */
5534 static int omap_dsihw_probe(struct platform_device *dsidev)
5538 struct resource *dsi_mem;
5539 struct dsi_data *dsi;
5541 dsi = devm_kzalloc(&dsidev->dev, sizeof(*dsi), GFP_KERNEL);
5545 dsi->module_id = dsidev->id;
5547 dev_set_drvdata(&dsidev->dev, dsi);
5549 spin_lock_init(&dsi->irq_lock);
5550 spin_lock_init(&dsi->errors_lock);
5553 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5554 spin_lock_init(&dsi->irq_stats_lock);
5555 dsi->irq_stats.last_reset = jiffies;
5558 mutex_init(&dsi->lock);
5559 sema_init(&dsi->bus_lock, 1);
5561 INIT_DEFERRABLE_WORK(&dsi->framedone_timeout_work,
5562 dsi_framedone_timeout_work_callback);
5564 #ifdef DSI_CATCH_MISSING_TE
5565 init_timer(&dsi->te_timer);
5566 dsi->te_timer.function = dsi_te_timeout;
5567 dsi->te_timer.data = 0;
5569 dsi_mem = platform_get_resource(dsi->pdev, IORESOURCE_MEM, 0);
5571 DSSERR("can't get IORESOURCE_MEM DSI\n");
5575 dsi->base = devm_ioremap(&dsidev->dev, dsi_mem->start,
5576 resource_size(dsi_mem));
5578 DSSERR("can't ioremap DSI\n");
5582 dsi->irq = platform_get_irq(dsi->pdev, 0);
5584 DSSERR("platform_get_irq failed\n");
5588 r = devm_request_irq(&dsidev->dev, dsi->irq, omap_dsi_irq_handler,
5589 IRQF_SHARED, dev_name(&dsidev->dev), dsi->pdev);
5591 DSSERR("request_irq failed\n");
5595 /* DSI VCs initialization */
5596 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
5597 dsi->vc[i].source = DSI_VC_SOURCE_L4;
5598 dsi->vc[i].dssdev = NULL;
5599 dsi->vc[i].vc_id = 0;
5602 dsi_calc_clock_param_ranges(dsidev);
5604 r = dsi_get_clocks(dsidev);
5608 pm_runtime_enable(&dsidev->dev);
5610 r = dsi_runtime_get(dsidev);
5612 goto err_runtime_get;
5614 rev = dsi_read_reg(dsidev, DSI_REVISION);
5615 dev_dbg(&dsidev->dev, "OMAP DSI rev %d.%d\n",
5616 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
5618 /* DSI on OMAP3 doesn't have register DSI_GNQ, set number
5619 * of data to 3 by default */
5620 if (dss_has_feature(FEAT_DSI_GNQ))
5622 dsi->num_lanes_supported = 1 + REG_GET(dsidev, DSI_GNQ, 11, 9);
5624 dsi->num_lanes_supported = 3;
5626 dsi->line_buffer_size = dsi_get_line_buf_size(dsidev);
5628 dsi_init_output(dsidev);
5630 if (dsidev->dev.platform_data) {
5631 r = dsi_probe_pdata(dsidev);
5636 dsi_runtime_put(dsidev);
5638 if (dsi->module_id == 0)
5639 dss_debugfs_create_file("dsi1_regs", dsi1_dump_regs);
5640 else if (dsi->module_id == 1)
5641 dss_debugfs_create_file("dsi2_regs", dsi2_dump_regs);
5643 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5644 if (dsi->module_id == 0)
5645 dss_debugfs_create_file("dsi1_irqs", dsi1_dump_irqs);
5646 else if (dsi->module_id == 1)
5647 dss_debugfs_create_file("dsi2_irqs", dsi2_dump_irqs);
5652 dsi_runtime_put(dsidev);
5653 dsi_uninit_output(dsidev);
5655 pm_runtime_disable(&dsidev->dev);
5659 static int __exit omap_dsihw_remove(struct platform_device *dsidev)
5661 struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
5663 WARN_ON(dsi->scp_clk_refcount > 0);
5665 dss_unregister_child_devices(&dsidev->dev);
5667 dsi_uninit_output(dsidev);
5669 pm_runtime_disable(&dsidev->dev);
5671 if (dsi->vdds_dsi_reg != NULL && dsi->vdds_dsi_enabled) {
5672 regulator_disable(dsi->vdds_dsi_reg);
5673 dsi->vdds_dsi_enabled = false;
5679 static int dsi_runtime_suspend(struct device *dev)
5681 dispc_runtime_put();
5686 static int dsi_runtime_resume(struct device *dev)
5690 r = dispc_runtime_get();
5697 static const struct dev_pm_ops dsi_pm_ops = {
5698 .runtime_suspend = dsi_runtime_suspend,
5699 .runtime_resume = dsi_runtime_resume,
5702 static struct platform_driver omap_dsihw_driver = {
5703 .probe = omap_dsihw_probe,
5704 .remove = __exit_p(omap_dsihw_remove),
5706 .name = "omapdss_dsi",
5707 .owner = THIS_MODULE,
5712 int __init dsi_init_platform_driver(void)
5714 return platform_driver_register(&omap_dsihw_driver);
5717 void __exit dsi_uninit_platform_driver(void)
5719 platform_driver_unregister(&omap_dsihw_driver);