2 * Copyright (c) 2016, Fuzhou Rockchip Electronics Co., Ltd
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
10 #include <linux/component.h>
11 #include <linux/iopoll.h>
12 #include <linux/math64.h>
13 #include <linux/module.h>
14 #include <linux/of_device.h>
15 #include <linux/phy/phy.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/regmap.h>
18 #include <linux/reset.h>
19 #include <linux/mfd/syscon.h>
20 #include <drm/drm_atomic_helper.h>
21 #include <drm/drm_crtc.h>
22 #include <drm/drm_crtc_helper.h>
23 #include <drm/drm_mipi_dsi.h>
24 #include <drm/drm_of.h>
25 #include <drm/drm_panel.h>
27 #include <video/mipi_display.h>
28 #include <asm/unaligned.h>
30 #include "rockchip_drm_drv.h"
31 #include "rockchip_drm_vop.h"
33 #define DRIVER_NAME "dw-mipi-dsi"
35 #define RK3288_GRF_SOC_CON6 0x025c
36 #define RK3288_DSI0_SEL_VOP_LIT BIT(6)
37 #define RK3288_DSI1_SEL_VOP_LIT BIT(9)
39 #define RK3366_GRF_SOC_CON0 0x0400
40 #define RK3366_DSI_SEL_VOP_LIT BIT(2)
42 #define RK3399_GRF_SOC_CON19 0x6250
43 #define RK3399_DSI0_SEL_VOP_LIT BIT(0)
44 #define RK3399_DSI1_SEL_VOP_LIT BIT(4)
46 /* disable turnrequest, turndisable, forcetxstopmode, forcerxmode */
47 #define RK3399_GRF_SOC_CON22 0x6258
48 #define RK3399_GRF_DSI_MODE 0xffff0000
50 #define DSI_VERSION 0x00
51 #define DSI_PWR_UP 0x04
53 #define POWERUP BIT(0)
55 #define DSI_CLKMGR_CFG 0x08
56 #define TO_CLK_DIVIDSION(div) (((div) & 0xff) << 8)
57 #define TX_ESC_CLK_DIVIDSION(div) (((div) & 0xff) << 0)
59 #define DSI_DPI_VCID 0x0c
60 #define DPI_VID(vid) (((vid) & 0x3) << 0)
62 #define DSI_DPI_COLOR_CODING 0x10
63 #define EN18_LOOSELY BIT(8)
64 #define DPI_COLOR_CODING_16BIT_1 0x0
65 #define DPI_COLOR_CODING_16BIT_2 0x1
66 #define DPI_COLOR_CODING_16BIT_3 0x2
67 #define DPI_COLOR_CODING_18BIT_1 0x3
68 #define DPI_COLOR_CODING_18BIT_2 0x4
69 #define DPI_COLOR_CODING_24BIT 0x5
71 #define DSI_DPI_CFG_POL 0x14
72 #define COLORM_ACTIVE_LOW BIT(4)
73 #define SHUTD_ACTIVE_LOW BIT(3)
74 #define HSYNC_ACTIVE_LOW BIT(2)
75 #define VSYNC_ACTIVE_LOW BIT(1)
76 #define DATAEN_ACTIVE_LOW BIT(0)
78 #define DSI_DPI_LP_CMD_TIM 0x18
79 #define OUTVACT_LPCMD_TIME(p) (((p) & 0xff) << 16)
80 #define INVACT_LPCMD_TIME(p) ((p) & 0xff)
82 #define DSI_DBI_CFG 0x20
83 #define DSI_DBI_CMDSIZE 0x28
85 #define DSI_PCKHDL_CFG 0x2c
86 #define EN_CRC_RX BIT(4)
87 #define EN_ECC_RX BIT(3)
89 #define EN_EOTP_RX BIT(1)
90 #define EN_EOTP_TX BIT(0)
92 #define DSI_MODE_CFG 0x34
93 #define ENABLE_VIDEO_MODE 0
94 #define ENABLE_CMD_MODE BIT(0)
96 #define DSI_VID_MODE_CFG 0x38
97 #define FRAME_BTA_ACK BIT(14)
98 #define ENABLE_LOW_POWER (0x3f << 8)
99 #define ENABLE_LOW_POWER_MASK (0x3f << 8)
100 #define VID_MODE_TYPE_BURST_SYNC_PULSES 0x0
101 #define VID_MODE_TYPE_BURST_SYNC_EVENTS 0x1
102 #define VID_MODE_TYPE_BURST 0x2
104 #define DSI_VID_PKT_SIZE 0x3c
105 #define VID_PKT_SIZE(p) (((p) & 0x3fff) << 0)
106 #define VID_PKT_MAX_SIZE 0x3fff
108 #define DSI_VID_NUM_CHUMKS 0x40
109 #define DSI_VID_NULL_PKT_SIZE 0x44
110 #define DSI_VID_HSA_TIME 0x48
111 #define DSI_VID_HBP_TIME 0x4c
112 #define DSI_VID_HLINE_TIME 0x50
113 #define DSI_VID_VSA_LINES 0x54
114 #define DSI_VID_VBP_LINES 0x58
115 #define DSI_VID_VFP_LINES 0x5c
116 #define DSI_VID_VACTIVE_LINES 0x60
117 #define DSI_CMD_MODE_CFG 0x68
118 #define MAX_RD_PKT_SIZE_LP BIT(24)
119 #define DCS_LW_TX_LP BIT(19)
120 #define DCS_SR_0P_TX_LP BIT(18)
121 #define DCS_SW_1P_TX_LP BIT(17)
122 #define DCS_SW_0P_TX_LP BIT(16)
123 #define GEN_LW_TX_LP BIT(14)
124 #define GEN_SR_2P_TX_LP BIT(13)
125 #define GEN_SR_1P_TX_LP BIT(12)
126 #define GEN_SR_0P_TX_LP BIT(11)
127 #define GEN_SW_2P_TX_LP BIT(10)
128 #define GEN_SW_1P_TX_LP BIT(9)
129 #define GEN_SW_0P_TX_LP BIT(8)
130 #define EN_ACK_RQST BIT(1)
131 #define EN_TEAR_FX BIT(0)
133 #define CMD_MODE_ALL_LP (MAX_RD_PKT_SIZE_LP | \
146 #define DSI_GEN_HDR 0x6c
147 #define GEN_HDATA(data) (((data) & 0xffff) << 8)
148 #define GEN_HDATA_MASK (0xffff << 8)
149 #define GEN_HTYPE(type) (((type) & 0xff) << 0)
150 #define GEN_HTYPE_MASK 0xff
152 #define DSI_GEN_PLD_DATA 0x70
154 #define DSI_CMD_PKT_STATUS 0x74
155 #define GEN_CMD_EMPTY BIT(0)
156 #define GEN_CMD_FULL BIT(1)
157 #define GEN_PLD_W_EMPTY BIT(2)
158 #define GEN_PLD_W_FULL BIT(3)
159 #define GEN_PLD_R_EMPTY BIT(4)
160 #define GEN_PLD_R_FULL BIT(5)
161 #define GEN_RD_CMD_BUSY BIT(6)
163 #define DSI_TO_CNT_CFG 0x78
164 #define HSTX_TO_CNT(p) (((p) & 0xffff) << 16)
165 #define LPRX_TO_CNT(p) ((p) & 0xffff)
167 #define DSI_BTA_TO_CNT 0x8c
168 #define DSI_LPCLK_CTRL 0x94
169 #define AUTO_CLKLANE_CTRL BIT(1)
170 #define PHY_TXREQUESTCLKHS BIT(0)
172 #define DSI_PHY_TMR_LPCLK_CFG 0x98
173 #define PHY_CLKHS2LP_TIME(lbcc) (((lbcc) & 0x3ff) << 16)
174 #define PHY_CLKLP2HS_TIME(lbcc) ((lbcc) & 0x3ff)
176 #define DSI_PHY_TMR_CFG 0x9c
177 #define PHY_HS2LP_TIME(lbcc) (((lbcc) & 0xff) << 24)
178 #define PHY_LP2HS_TIME(lbcc) (((lbcc) & 0xff) << 16)
179 #define MAX_RD_TIME(lbcc) ((lbcc) & 0x7fff)
181 #define DSI_PHY_RSTZ 0xa0
182 #define PHY_DISFORCEPLL 0
183 #define PHY_ENFORCEPLL BIT(3)
184 #define PHY_DISABLECLK 0
185 #define PHY_ENABLECLK BIT(2)
187 #define PHY_UNRSTZ BIT(1)
188 #define PHY_SHUTDOWNZ 0
189 #define PHY_UNSHUTDOWNZ BIT(0)
191 #define DSI_PHY_IF_CFG 0xa4
192 #define N_LANES(n) ((((n) - 1) & 0x3) << 0)
193 #define PHY_STOP_WAIT_TIME(cycle) (((cycle) & 0xff) << 8)
195 #define DSI_PHY_STATUS 0xb0
197 #define STOP_STATE_CLK_LANE BIT(2)
199 #define DSI_PHY_TST_CTRL0 0xb4
200 #define PHY_TESTCLK BIT(1)
201 #define PHY_UNTESTCLK 0
202 #define PHY_TESTCLR BIT(0)
203 #define PHY_UNTESTCLR 0
205 #define DSI_PHY_TST_CTRL1 0xb8
206 #define PHY_TESTEN BIT(16)
207 #define PHY_UNTESTEN 0
208 #define PHY_TESTDOUT(n) (((n) & 0xff) << 8)
209 #define PHY_TESTDIN(n) (((n) & 0xff) << 0)
211 #define DSI_INT_ST0 0xbc
212 #define DSI_INT_ST1 0xc0
213 #define DSI_INT_MSK0 0xc4
214 #define DSI_INT_MSK1 0xc8
216 #define PHY_STATUS_TIMEOUT_US 10000
217 #define CMD_PKT_STATUS_TIMEOUT_US 20000
219 #define BYPASS_VCO_RANGE BIT(7)
220 #define VCO_RANGE_CON_SEL(val) (((val) & 0x7) << 3)
221 #define VCO_IN_CAP_CON_DEFAULT (0x0 << 1)
222 #define VCO_IN_CAP_CON_LOW (0x1 << 1)
223 #define VCO_IN_CAP_CON_HIGH (0x2 << 1)
224 #define REF_BIAS_CUR_SEL BIT(0)
226 #define CP_CURRENT_3MA BIT(3)
227 #define CP_PROGRAM_EN BIT(7)
228 #define LPF_PROGRAM_EN BIT(6)
229 #define LPF_RESISTORS_20_KOHM 0
231 #define HSFREQRANGE_SEL(val) (((val) & 0x3f) << 1)
233 #define INPUT_DIVIDER(val) ((val - 1) & 0x7f)
234 #define LOW_PROGRAM_EN 0
235 #define HIGH_PROGRAM_EN BIT(7)
236 #define LOOP_DIV_LOW_SEL(val) ((val - 1) & 0x1f)
237 #define LOOP_DIV_HIGH_SEL(val) (((val - 1) >> 5) & 0x1f)
238 #define PLL_LOOP_DIV_EN BIT(5)
239 #define PLL_INPUT_DIV_EN BIT(4)
241 #define POWER_CONTROL BIT(6)
242 #define INTERNAL_REG_CURRENT BIT(3)
243 #define BIAS_BLOCK_ON BIT(2)
244 #define BANDGAP_ON BIT(0)
246 #define TER_RESISTOR_HIGH BIT(7)
247 #define TER_RESISTOR_LOW 0
248 #define LEVEL_SHIFTERS_ON BIT(6)
249 #define TER_CAL_DONE BIT(5)
250 #define SETRD_MAX (0x7 << 2)
251 #define POWER_MANAGE BIT(1)
252 #define TER_RESISTORS_ON BIT(0)
254 #define BIASEXTR_SEL(val) ((val) & 0x7)
255 #define BANDGAP_SEL(val) ((val) & 0x7)
256 #define TLP_PROGRAM_EN BIT(7)
257 #define THS_PRE_PROGRAM_EN BIT(7)
258 #define THS_ZERO_PROGRAM_EN BIT(6)
282 struct dw_mipi_dsi_plat_data {
287 u32 grf_dsi0_mode_reg;
288 unsigned int max_data_lanes;
289 u32 max_bit_rate_per_lane;
291 enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
292 struct drm_display_mode *mode);
296 struct drm_encoder encoder;
297 struct drm_connector connector;
298 struct mipi_dsi_host dsi_host;
300 struct drm_panel *panel;
302 struct regmap *grf_regmap;
303 struct reset_control *rst;
306 struct clk *pllref_clk;
308 struct clk *phy_cfg_clk;
310 unsigned int lane_mbps; /* per lane */
316 struct drm_display_mode mode;
318 const struct dw_mipi_dsi_plat_data *pdata;
321 enum dw_mipi_dsi_mode {
326 struct dphy_pll_testdin_map {
327 unsigned int max_mbps;
331 /* The table is based on 27MHz DPHY pll reference clock. */
332 static const struct dphy_pll_testdin_map dptdin_map[] = {
333 { 90, 0x00}, { 100, 0x10}, { 110, 0x20}, { 130, 0x01},
334 { 140, 0x11}, { 150, 0x21}, { 170, 0x02}, { 180, 0x12},
335 { 200, 0x22}, { 220, 0x03}, { 240, 0x13}, { 250, 0x23},
336 { 270, 0x04}, { 300, 0x14}, { 330, 0x05}, { 360, 0x15},
337 { 400, 0x25}, { 450, 0x06}, { 500, 0x16}, { 550, 0x07},
338 { 600, 0x17}, { 650, 0x08}, { 700, 0x18}, { 750, 0x09},
339 { 800, 0x19}, { 850, 0x29}, { 900, 0x39}, { 950, 0x0a},
340 {1000, 0x1a}, {1050, 0x2a}, {1100, 0x3a}, {1150, 0x0b},
341 {1200, 0x1b}, {1250, 0x2b}, {1300, 0x3b}, {1350, 0x0c},
342 {1400, 0x1c}, {1450, 0x2c}, {1500, 0x3c}
345 static int max_mbps_to_testdin(unsigned int max_mbps)
349 for (i = 0; i < ARRAY_SIZE(dptdin_map); i++)
350 if (dptdin_map[i].max_mbps > max_mbps)
351 return dptdin_map[i].testdin;
356 static inline struct dw_mipi_dsi *host_to_dsi(struct mipi_dsi_host *host)
358 return container_of(host, struct dw_mipi_dsi, dsi_host);
361 static inline struct dw_mipi_dsi *con_to_dsi(struct drm_connector *con)
363 return container_of(con, struct dw_mipi_dsi, connector);
366 static inline struct dw_mipi_dsi *encoder_to_dsi(struct drm_encoder *encoder)
368 return container_of(encoder, struct dw_mipi_dsi, encoder);
370 static inline void dsi_write(struct dw_mipi_dsi *dsi, u32 reg, u32 val)
372 writel(val, dsi->base + reg);
375 static inline u32 dsi_read(struct dw_mipi_dsi *dsi, u32 reg)
377 return readl(dsi->base + reg);
380 static int rockchip_wait_w_pld_fifo_not_full(struct dw_mipi_dsi *dsi)
385 ret = readx_poll_timeout(readl, dsi->base + DSI_CMD_PKT_STATUS,
386 sts, !(sts & GEN_PLD_W_FULL), 10,
387 CMD_PKT_STATUS_TIMEOUT_US);
389 dev_err(dsi->dev, "generic write payload fifo is full\n");
396 static int rockchip_wait_cmd_fifo_not_full(struct dw_mipi_dsi *dsi)
401 ret = readx_poll_timeout(readl, dsi->base + DSI_CMD_PKT_STATUS,
402 sts, !(sts & GEN_CMD_FULL), 10,
403 CMD_PKT_STATUS_TIMEOUT_US);
405 dev_err(dsi->dev, "generic write cmd fifo is full\n");
412 static int rockchip_wait_write_fifo_empty(struct dw_mipi_dsi *dsi)
418 mask = GEN_CMD_EMPTY | GEN_PLD_W_EMPTY;
419 ret = readx_poll_timeout(readl, dsi->base + DSI_CMD_PKT_STATUS,
420 sts, (sts & mask) == mask, 10,
421 CMD_PKT_STATUS_TIMEOUT_US);
423 dev_err(dsi->dev, "generic write fifo is full\n");
430 static void dw_mipi_dsi_phy_write(struct dw_mipi_dsi *dsi, u8 test_code,
434 * With the falling edge on TESTCLK, the TESTDIN[7:0] signal content
435 * is latched internally as the current test code. Test data is
436 * programmed internally by rising edge on TESTCLK.
438 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);
440 dsi_write(dsi, DSI_PHY_TST_CTRL1, PHY_TESTEN | PHY_TESTDOUT(0) |
441 PHY_TESTDIN(test_code));
443 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLK | PHY_UNTESTCLR);
445 dsi_write(dsi, DSI_PHY_TST_CTRL1, PHY_UNTESTEN | PHY_TESTDOUT(0) |
446 PHY_TESTDIN(test_data));
448 dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLK | PHY_UNTESTCLR);
451 static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi)
453 int ret, testdin, vco, val;
455 vco = (dsi->lane_mbps < 200) ? 0 : (dsi->lane_mbps + 100) / 200;
457 testdin = max_mbps_to_testdin(dsi->lane_mbps);
460 "failed to get testdin for %dmbps lane clock\n",
465 dsi_write(dsi, DSI_PWR_UP, POWERUP);
467 if (!IS_ERR(dsi->phy_cfg_clk)) {
468 ret = clk_prepare_enable(dsi->phy_cfg_clk);
470 dev_err(dsi->dev, "Failed to enable phy_cfg_clk\n");
475 dw_mipi_dsi_phy_write(dsi, 0x10, BYPASS_VCO_RANGE |
476 VCO_RANGE_CON_SEL(vco) |
480 dw_mipi_dsi_phy_write(dsi, 0x11, CP_CURRENT_3MA);
481 dw_mipi_dsi_phy_write(dsi, 0x12, CP_PROGRAM_EN | LPF_PROGRAM_EN |
482 LPF_RESISTORS_20_KOHM);
484 dw_mipi_dsi_phy_write(dsi, 0x44, HSFREQRANGE_SEL(testdin));
486 dw_mipi_dsi_phy_write(dsi, 0x19, PLL_LOOP_DIV_EN | PLL_INPUT_DIV_EN);
487 dw_mipi_dsi_phy_write(dsi, 0x17, INPUT_DIVIDER(dsi->input_div));
488 dw_mipi_dsi_phy_write(dsi, 0x18, LOOP_DIV_LOW_SEL(dsi->feedback_div) |
490 dw_mipi_dsi_phy_write(dsi, 0x18, LOOP_DIV_HIGH_SEL(dsi->feedback_div) |
493 dw_mipi_dsi_phy_write(dsi, 0x20, POWER_CONTROL | INTERNAL_REG_CURRENT |
494 BIAS_BLOCK_ON | BANDGAP_ON);
496 dw_mipi_dsi_phy_write(dsi, 0x21, TER_RESISTOR_LOW | TER_CAL_DONE |
497 SETRD_MAX | TER_RESISTORS_ON);
498 dw_mipi_dsi_phy_write(dsi, 0x21, TER_RESISTOR_HIGH | LEVEL_SHIFTERS_ON |
499 SETRD_MAX | POWER_MANAGE |
502 dw_mipi_dsi_phy_write(dsi, 0x22, LOW_PROGRAM_EN |
503 BIASEXTR_SEL(BIASEXTR_127_7));
504 dw_mipi_dsi_phy_write(dsi, 0x22, HIGH_PROGRAM_EN |
505 BANDGAP_SEL(BANDGAP_96_10));
507 dw_mipi_dsi_phy_write(dsi, 0x70, TLP_PROGRAM_EN | 0xf);
508 dw_mipi_dsi_phy_write(dsi, 0x71, THS_PRE_PROGRAM_EN | 0x2d);
509 dw_mipi_dsi_phy_write(dsi, 0x72, THS_ZERO_PROGRAM_EN | 0xa);
511 dsi_write(dsi, DSI_PHY_RSTZ, PHY_ENFORCEPLL | PHY_ENABLECLK |
512 PHY_UNRSTZ | PHY_UNSHUTDOWNZ);
515 ret = readx_poll_timeout(readl, dsi->base + DSI_PHY_STATUS,
516 val, val & LOCK, 1000, PHY_STATUS_TIMEOUT_US);
518 dev_err(dsi->dev, "failed to wait for phy lock state\n");
522 ret = readx_poll_timeout(readl, dsi->base + DSI_PHY_STATUS,
523 val, val & STOP_STATE_CLK_LANE, 1000,
524 PHY_STATUS_TIMEOUT_US);
527 "failed to wait for phy clk lane stop state\n");
530 if (!IS_ERR(dsi->phy_cfg_clk))
531 clk_disable_unprepare(dsi->phy_cfg_clk);
536 static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi)
539 unsigned long mpclk, pllref, tmp;
540 unsigned int m = 1, n = 1, target_mbps = 1000;
541 unsigned int max_mbps = dptdin_map[ARRAY_SIZE(dptdin_map) - 1].max_mbps;
544 bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);
546 dev_err(dsi->dev, "failed to get bpp for pixel format %d\n",
551 mpclk = DIV_ROUND_UP(dsi->mode.clock, MSEC_PER_SEC);
553 /* take 1 / 0.9, since mbps must big than bandwidth of RGB */
554 tmp = mpclk * (bpp / dsi->lanes) * 10 / 9;
558 dev_err(dsi->dev, "DPHY clock frequency is out of range\n");
561 pllref = DIV_ROUND_UP(clk_get_rate(dsi->pllref_clk), USEC_PER_SEC);
564 for (i = 1; i < 6; i++) {
566 if ((tmp > (target_mbps % pre)) && (target_mbps / pre < 512)) {
567 tmp = target_mbps % pre;
569 m = target_mbps / pre;
575 dsi->lane_mbps = pllref / n * m;
577 dsi->feedback_div = m;
582 static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host,
583 struct mipi_dsi_device *device)
585 struct dw_mipi_dsi *dsi = host_to_dsi(host);
587 if (device->lanes > dsi->pdata->max_data_lanes) {
588 dev_err(dsi->dev, "the number of data lanes(%u) is too many\n",
593 if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)) {
594 dev_err(dsi->dev, "device mode is unsupported\n");
598 dsi->lanes = device->lanes;
599 dsi->channel = device->channel;
600 dsi->format = device->format;
601 dsi->panel = of_drm_find_panel(device->dev.of_node);
603 DRM_ERROR("failed to find panel\n");
610 static int dw_mipi_dsi_host_detach(struct mipi_dsi_host *host,
611 struct mipi_dsi_device *device)
613 struct dw_mipi_dsi *dsi = host_to_dsi(host);
616 drm_panel_detach(dsi->panel);
622 static void rockchip_set_transfer_mode(struct dw_mipi_dsi *dsi, int flags)
624 if (flags & MIPI_DSI_MSG_USE_LPM)
625 dsi_write(dsi, DSI_CMD_MODE_CFG, CMD_MODE_ALL_LP);
627 dsi_write(dsi, DSI_CMD_MODE_CFG, 0);
630 static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host,
631 const struct mipi_dsi_msg *msg)
633 struct dw_mipi_dsi *dsi = host_to_dsi(host);
634 struct mipi_dsi_packet packet;
637 int len = msg->tx_len;
639 /* create a packet to the DSI protocol */
640 ret = mipi_dsi_create_packet(&packet, msg);
642 dev_err(dsi->dev, "failed to create packet: %d\n", ret);
646 rockchip_set_transfer_mode(dsi, msg->flags);
649 while (DIV_ROUND_UP(packet.payload_length, 4)) {
651 * Alternatively, you can always keep the FIFO
652 * nearly full by monitoring the FIFO state until
653 * it is not full, and then writea single word of data.
654 * This solution is more resource consuming
655 * but it simultaneously avoids FIFO starvation,
656 * making it possible to use FIFO sizes smaller than
657 * the amount of data of the longest packet to be written.
659 ret = rockchip_wait_w_pld_fifo_not_full(dsi);
663 if (packet.payload_length < 4) {
664 /* send residu payload */
666 memcpy(&val, packet.payload, packet.payload_length);
667 dsi_write(dsi, DSI_GEN_PLD_DATA, val);
668 packet.payload_length = 0;
670 val = get_unaligned_le32(packet.payload);
671 dsi_write(dsi, DSI_GEN_PLD_DATA, val);
673 packet.payload_length -= 4;
677 ret = rockchip_wait_cmd_fifo_not_full(dsi);
681 /* Send packet header */
682 val = get_unaligned_le32(packet.header);
683 dsi_write(dsi, DSI_GEN_HDR, val);
685 ret = rockchip_wait_write_fifo_empty(dsi);
692 static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = {
693 .attach = dw_mipi_dsi_host_attach,
694 .detach = dw_mipi_dsi_host_detach,
695 .transfer = dw_mipi_dsi_host_transfer,
698 static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
702 val = VID_MODE_TYPE_BURST | ENABLE_LOW_POWER;
704 dsi_write(dsi, DSI_VID_MODE_CFG, val);
707 static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi,
708 enum dw_mipi_dsi_mode mode)
710 if (mode == DSI_COMMAND_MODE)
711 dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE);
713 dsi_write(dsi, DSI_MODE_CFG, ENABLE_VIDEO_MODE);
716 static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi)
718 dsi_write(dsi, DSI_PWR_UP, RESET);
719 dsi_write(dsi, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK
720 | PHY_RSTZ | PHY_SHUTDOWNZ);
721 dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVIDSION(10) |
722 TX_ESC_CLK_DIVIDSION(7));
723 dsi_write(dsi, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS);
726 static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,
727 struct drm_display_mode *mode)
729 u32 val = 0, color = 0;
731 switch (dsi->format) {
732 case MIPI_DSI_FMT_RGB888:
733 color = DPI_COLOR_CODING_24BIT;
735 case MIPI_DSI_FMT_RGB666:
736 color = DPI_COLOR_CODING_18BIT_2 | EN18_LOOSELY;
738 case MIPI_DSI_FMT_RGB666_PACKED:
739 color = DPI_COLOR_CODING_18BIT_1;
741 case MIPI_DSI_FMT_RGB565:
742 color = DPI_COLOR_CODING_16BIT_1;
746 if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
747 val |= VSYNC_ACTIVE_LOW;
748 if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
749 val |= HSYNC_ACTIVE_LOW;
751 dsi_write(dsi, DSI_DPI_VCID, DPI_VID(dsi->channel));
752 dsi_write(dsi, DSI_DPI_COLOR_CODING, color);
753 dsi_write(dsi, DSI_DPI_CFG_POL, val);
754 dsi_write(dsi, DSI_DPI_LP_CMD_TIM, OUTVACT_LPCMD_TIME(4)
755 | INVACT_LPCMD_TIME(4));
758 static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi)
760 dsi_write(dsi, DSI_PCKHDL_CFG, EN_CRC_RX | EN_ECC_RX | EN_BTA);
763 static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi,
764 struct drm_display_mode *mode)
766 dsi_write(dsi, DSI_VID_PKT_SIZE, VID_PKT_SIZE(mode->hdisplay));
769 static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi)
771 dsi_write(dsi, DSI_TO_CNT_CFG, HSTX_TO_CNT(1000) | LPRX_TO_CNT(1000));
772 dsi_write(dsi, DSI_BTA_TO_CNT, 0xd00);
775 /* Get lane byte clock cycles. */
776 static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi,
781 lbcc = hcomponent * dsi->lane_mbps * MSEC_PER_SEC / 8;
783 frac = lbcc % dsi->mode.clock;
784 lbcc = lbcc / dsi->mode.clock;
791 static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi)
793 u32 htotal, hsa, hbp, lbcc;
794 struct drm_display_mode *mode = &dsi->mode;
796 htotal = mode->htotal;
797 hsa = mode->hsync_end - mode->hsync_start;
798 hbp = mode->htotal - mode->hsync_end;
800 lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, htotal);
801 dsi_write(dsi, DSI_VID_HLINE_TIME, lbcc);
803 lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, hsa);
804 dsi_write(dsi, DSI_VID_HSA_TIME, lbcc);
806 lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, hbp);
807 dsi_write(dsi, DSI_VID_HBP_TIME, lbcc);
810 static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi)
812 u32 vactive, vsa, vfp, vbp;
813 struct drm_display_mode *mode = &dsi->mode;
815 vactive = mode->vdisplay;
816 vsa = mode->vsync_end - mode->vsync_start;
817 vfp = mode->vsync_start - mode->vdisplay;
818 vbp = mode->vtotal - mode->vsync_end;
820 dsi_write(dsi, DSI_VID_VACTIVE_LINES, vactive);
821 dsi_write(dsi, DSI_VID_VSA_LINES, vsa);
822 dsi_write(dsi, DSI_VID_VFP_LINES, vfp);
823 dsi_write(dsi, DSI_VID_VBP_LINES, vbp);
826 static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi)
828 dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME(0x14)
829 | PHY_LP2HS_TIME(0x10) | MAX_RD_TIME(10000));
831 dsi_write(dsi, DSI_PHY_TMR_LPCLK_CFG, PHY_CLKHS2LP_TIME(0x40)
832 | PHY_CLKLP2HS_TIME(0x40));
835 static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi)
837 dsi_write(dsi, DSI_PHY_IF_CFG, PHY_STOP_WAIT_TIME(0x20) |
838 N_LANES(dsi->lanes));
841 static void dw_mipi_dsi_clear_err(struct dw_mipi_dsi *dsi)
843 dsi_read(dsi, DSI_INT_ST0);
844 dsi_read(dsi, DSI_INT_ST1);
845 dsi_write(dsi, DSI_INT_MSK0, 0);
846 dsi_write(dsi, DSI_INT_MSK1, 0);
849 static void dw_mipi_dsi_encoder_mode_set(struct drm_encoder *encoder,
850 struct drm_display_mode *mode,
851 struct drm_display_mode *adjusted_mode)
853 struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
855 drm_mode_copy(&dsi->mode, adjusted_mode);
858 static void rockchip_dsi_pre_disable(struct dw_mipi_dsi *dsi)
860 if (clk_prepare_enable(dsi->pclk)) {
861 dev_err(dsi->dev, "%s: Failed to enable pclk\n", __func__);
865 dw_mipi_dsi_set_mode(dsi, DSI_COMMAND_MODE);
868 static void rockchip_dsi_disable(struct dw_mipi_dsi *dsi)
871 dsi_write(dsi, DSI_LPCLK_CTRL, 0);
872 dsi_write(dsi, DSI_PWR_UP, RESET);
875 dsi_write(dsi, DSI_PHY_RSTZ, PHY_RSTZ);
877 phy_power_off(dsi->phy);
879 pm_runtime_put(dsi->dev);
880 clk_disable_unprepare(dsi->pclk);
883 static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder)
885 struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
888 drm_panel_disable(dsi->panel);
890 rockchip_dsi_pre_disable(dsi);
893 drm_panel_unprepare(dsi->panel);
895 rockchip_dsi_disable(dsi);
898 static bool dw_mipi_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
899 const struct drm_display_mode *mode,
900 struct drm_display_mode *adjusted_mode)
905 static void rockchip_dsi_grf_config(struct dw_mipi_dsi *dsi, int vop_id)
907 const struct dw_mipi_dsi_plat_data *pdata = dsi->pdata;
911 val = pdata->dsi0_en_bit | (pdata->dsi0_en_bit << 16);
913 val = pdata->dsi0_en_bit << 16;
915 regmap_write(dsi->grf_regmap, pdata->grf_switch_reg, val);
917 dev_dbg(dsi->dev, "vop %s output to dsi0\n", (vop_id) ? "LIT" : "BIG");
920 static void rockchip_dsi_pre_init(struct dw_mipi_dsi *dsi)
922 if (clk_prepare_enable(dsi->pclk)) {
923 dev_err(dsi->dev, "%s: Failed to enable pclk\n", __func__);
927 pm_runtime_get_sync(dsi->dev);
930 /* MIPI DSI APB software reset request. */
931 reset_control_assert(dsi->rst);
933 reset_control_deassert(dsi->rst);
938 phy_power_on(dsi->phy);
941 * If using the third party PHY, we get the lane
942 * rate information from PHY.
944 dsi->lane_mbps = phy_get_bus_width(dsi->phy);
946 dw_mipi_dsi_get_lane_bps(dsi);
950 static void rockchip_dsi_host_init(struct dw_mipi_dsi *dsi)
952 dw_mipi_dsi_init(dsi);
953 dw_mipi_dsi_dpi_config(dsi, &dsi->mode);
954 dw_mipi_dsi_packet_handler_config(dsi);
955 dw_mipi_dsi_video_mode_config(dsi);
956 dw_mipi_dsi_video_packet_config(dsi, &dsi->mode);
957 dw_mipi_dsi_command_mode_config(dsi);
958 dw_mipi_dsi_set_mode(dsi, DSI_COMMAND_MODE);
959 dw_mipi_dsi_line_timer_config(dsi);
960 dw_mipi_dsi_vertical_timing_config(dsi);
961 dw_mipi_dsi_dphy_timing_config(dsi);
962 dw_mipi_dsi_dphy_interface_config(dsi);
963 dw_mipi_dsi_clear_err(dsi);
966 static void rockchip_dsi_init(struct dw_mipi_dsi *dsi)
968 rockchip_dsi_pre_init(dsi);
969 rockchip_dsi_host_init(dsi);
970 dw_mipi_dsi_phy_init(dsi);
973 static void rockchip_dsi_enable(struct dw_mipi_dsi *dsi)
975 dw_mipi_dsi_set_mode(dsi, DSI_VIDEO_MODE);
976 clk_disable_unprepare(dsi->pclk);
979 static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
981 struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
984 vop_id = drm_of_encoder_active_endpoint_id(dsi->dev->of_node, encoder);
986 rockchip_dsi_grf_config(dsi, vop_id);
987 rockchip_dsi_init(dsi);
990 drm_panel_prepare(dsi->panel);
992 rockchip_dsi_enable(dsi);
995 drm_panel_enable(dsi->panel);
999 dw_mipi_dsi_encoder_atomic_check(struct drm_encoder *encoder,
1000 struct drm_crtc_state *crtc_state,
1001 struct drm_connector_state *conn_state)
1003 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
1004 struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
1005 struct drm_connector *connector = conn_state->connector;
1006 struct drm_display_info *info = &connector->display_info;
1008 switch (dsi->format) {
1009 case MIPI_DSI_FMT_RGB888:
1010 s->output_mode = ROCKCHIP_OUT_MODE_P888;
1012 case MIPI_DSI_FMT_RGB666:
1013 s->output_mode = ROCKCHIP_OUT_MODE_P666;
1015 case MIPI_DSI_FMT_RGB565:
1016 s->output_mode = ROCKCHIP_OUT_MODE_P565;
1023 s->output_type = DRM_MODE_CONNECTOR_DSI;
1024 if (info->num_bus_formats)
1025 s->bus_format = info->bus_formats[0];
1030 static struct drm_encoder_helper_funcs
1031 dw_mipi_dsi_encoder_helper_funcs = {
1032 .mode_fixup = dw_mipi_dsi_encoder_mode_fixup,
1033 .mode_set = dw_mipi_dsi_encoder_mode_set,
1034 .enable = dw_mipi_dsi_encoder_enable,
1035 .disable = dw_mipi_dsi_encoder_disable,
1036 .atomic_check = dw_mipi_dsi_encoder_atomic_check,
1039 static struct drm_encoder_funcs dw_mipi_dsi_encoder_funcs = {
1040 .destroy = drm_encoder_cleanup,
1043 static int dw_mipi_dsi_connector_get_modes(struct drm_connector *connector)
1045 struct dw_mipi_dsi *dsi = con_to_dsi(connector);
1047 return drm_panel_get_modes(dsi->panel);
1050 static enum drm_mode_status dw_mipi_dsi_mode_valid(
1051 struct drm_connector *connector,
1052 struct drm_display_mode *mode)
1054 struct dw_mipi_dsi *dsi = con_to_dsi(connector);
1056 enum drm_mode_status mode_status = MODE_OK;
1058 if (dsi->pdata->mode_valid)
1059 mode_status = dsi->pdata->mode_valid(connector, mode);
1064 static struct drm_encoder *dw_mipi_dsi_connector_best_encoder(
1065 struct drm_connector *connector)
1067 struct dw_mipi_dsi *dsi = con_to_dsi(connector);
1069 return &dsi->encoder;
1072 static int dw_mipi_loader_protect(struct drm_connector *connector, bool on)
1074 struct dw_mipi_dsi *dsi = con_to_dsi(connector);
1077 drm_panel_loader_protect(dsi->panel, on);
1079 pm_runtime_get_sync(dsi->dev);
1081 pm_runtime_put(dsi->dev);
1086 static struct drm_connector_helper_funcs dw_mipi_dsi_connector_helper_funcs = {
1087 .loader_protect = dw_mipi_loader_protect,
1088 .get_modes = dw_mipi_dsi_connector_get_modes,
1089 .mode_valid = dw_mipi_dsi_mode_valid,
1090 .best_encoder = dw_mipi_dsi_connector_best_encoder,
1093 static enum drm_connector_status
1094 dw_mipi_dsi_detect(struct drm_connector *connector, bool force)
1096 return connector_status_connected;
1099 static void dw_mipi_dsi_drm_connector_destroy(struct drm_connector *connector)
1101 drm_connector_unregister(connector);
1102 drm_connector_cleanup(connector);
1105 static struct drm_connector_funcs dw_mipi_dsi_atomic_connector_funcs = {
1106 .dpms = drm_atomic_helper_connector_dpms,
1107 .fill_modes = drm_helper_probe_single_connector_modes,
1108 .detect = dw_mipi_dsi_detect,
1109 .destroy = dw_mipi_dsi_drm_connector_destroy,
1110 .reset = drm_atomic_helper_connector_reset,
1111 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1112 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1115 static int dw_mipi_dsi_register(struct drm_device *drm,
1116 struct dw_mipi_dsi *dsi)
1118 struct drm_encoder *encoder = &dsi->encoder;
1119 struct drm_connector *connector = &dsi->connector;
1120 struct device *dev = dsi->dev;
1123 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm,
1126 * If we failed to find the CRTC(s) which this encoder is
1127 * supposed to be connected to, it's because the CRTC has
1128 * not been registered yet. Defer probing, and hope that
1129 * the required CRTC is added later.
1131 if (encoder->possible_crtcs == 0)
1132 return -EPROBE_DEFER;
1134 drm_encoder_helper_add(&dsi->encoder,
1135 &dw_mipi_dsi_encoder_helper_funcs);
1136 ret = drm_encoder_init(drm, &dsi->encoder, &dw_mipi_dsi_encoder_funcs,
1137 DRM_MODE_ENCODER_DSI, NULL);
1139 dev_err(dev, "Failed to initialize encoder with drm\n");
1143 drm_connector_helper_add(connector,
1144 &dw_mipi_dsi_connector_helper_funcs);
1146 drm_connector_init(drm, &dsi->connector,
1147 &dw_mipi_dsi_atomic_connector_funcs,
1148 DRM_MODE_CONNECTOR_DSI);
1150 drm_panel_attach(dsi->panel, &dsi->connector);
1152 dsi->connector.port = dev->of_node;
1154 drm_mode_connector_attach_encoder(connector, encoder);
1159 static int rockchip_mipi_parse_dt(struct dw_mipi_dsi *dsi)
1161 struct device_node *np = dsi->dev->of_node;
1163 dsi->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
1164 if (IS_ERR(dsi->grf_regmap)) {
1165 dev_err(dsi->dev, "Unable to get rockchip,grf\n");
1166 return PTR_ERR(dsi->grf_regmap);
1172 static struct dw_mipi_dsi_plat_data rk3288_mipi_dsi_drv_data = {
1173 .dsi0_en_bit = RK3288_DSI0_SEL_VOP_LIT,
1174 .dsi1_en_bit = RK3288_DSI1_SEL_VOP_LIT,
1175 .grf_switch_reg = RK3288_GRF_SOC_CON6,
1176 .max_data_lanes = 4,
1177 .max_bit_rate_per_lane = 1500000000,
1178 .has_vop_sel = true,
1181 static struct dw_mipi_dsi_plat_data rk3366_mipi_dsi_drv_data = {
1182 .dsi0_en_bit = RK3366_DSI_SEL_VOP_LIT,
1183 .grf_switch_reg = RK3366_GRF_SOC_CON0,
1184 .max_data_lanes = 4,
1185 .max_bit_rate_per_lane = 1000000000,
1186 .has_vop_sel = true,
1189 static struct dw_mipi_dsi_plat_data rk3368_mipi_dsi_drv_data = {
1190 .max_data_lanes = 4,
1191 .max_bit_rate_per_lane = 1000000000,
1194 static struct dw_mipi_dsi_plat_data rk3399_mipi_dsi_drv_data = {
1195 .dsi0_en_bit = RK3399_DSI0_SEL_VOP_LIT,
1196 .dsi1_en_bit = RK3399_DSI1_SEL_VOP_LIT,
1197 .grf_switch_reg = RK3399_GRF_SOC_CON19,
1198 .grf_dsi0_mode = RK3399_GRF_DSI_MODE,
1199 .grf_dsi0_mode_reg = RK3399_GRF_SOC_CON22,
1200 .max_data_lanes = 4,
1201 .max_bit_rate_per_lane = 1500000000,
1202 .has_vop_sel = true,
1205 static const struct of_device_id dw_mipi_dsi_dt_ids[] = {
1207 .compatible = "rockchip,rk3288-mipi-dsi",
1208 .data = &rk3288_mipi_dsi_drv_data,
1210 .compatible = "rockchip,rk3366-mipi-dsi",
1211 .data = &rk3366_mipi_dsi_drv_data,
1213 .compatible = "rockchip,rk3368-mipi-dsi",
1214 .data = &rk3368_mipi_dsi_drv_data,
1216 .compatible = "rockchip,rk3399-mipi-dsi",
1217 .data = &rk3399_mipi_dsi_drv_data,
1221 MODULE_DEVICE_TABLE(of, dw_mipi_dsi_dt_ids);
1223 static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
1226 struct platform_device *pdev = to_platform_device(dev);
1227 struct drm_device *drm = data;
1228 struct dw_mipi_dsi *dsi = dev_get_drvdata(dev);
1229 struct resource *res;
1233 return -EPROBE_DEFER;
1235 ret = rockchip_mipi_parse_dt(dsi);
1239 dsi->phy = devm_phy_optional_get(dev, "mipi_dphy");
1240 if (IS_ERR(dsi->phy)) {
1241 ret = PTR_ERR(dsi->phy);
1242 dev_err(dev, "failed to get mipi dphy: %d\n", ret);
1246 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1250 dsi->base = devm_ioremap_resource(dev, res);
1251 if (IS_ERR(dsi->base))
1252 return PTR_ERR(dsi->base);
1254 dsi->pclk = devm_clk_get(dev, "pclk");
1255 if (IS_ERR(dsi->pclk)) {
1256 ret = PTR_ERR(dsi->pclk);
1257 dev_err(dev, "Unable to get pclk: %d\n", ret);
1262 dsi->pllref_clk = devm_clk_get(dev, "ref");
1263 if (IS_ERR(dsi->pllref_clk)) {
1264 dev_info(dev, "No PHY reference clock specified\n");
1265 dsi->pllref_clk = NULL;
1269 dsi->phy_cfg_clk = devm_clk_get(dev, "phy_cfg");
1270 if (IS_ERR(dsi->phy_cfg_clk)) {
1271 dev_info(dev, "No PHY APB clock specified\n");
1272 dsi->phy_cfg_clk = NULL;
1275 ret = clk_prepare_enable(dsi->pllref_clk);
1277 dev_err(dev, "%s: Failed to enable pllref_clk\n", __func__);
1281 dsi->rst = devm_reset_control_get_optional(dev, "apb");
1282 if (IS_ERR(dsi->rst)) {
1283 dev_info(dev, "no reset control specified\n");
1287 ret = dw_mipi_dsi_register(drm, dsi);
1289 dev_err(dev, "Failed to register mipi_dsi: %d\n", ret);
1293 dev_set_drvdata(dev, dsi);
1295 pm_runtime_enable(dev);
1300 clk_disable_unprepare(dsi->pllref_clk);
1304 static void dw_mipi_dsi_unbind(struct device *dev, struct device *master,
1307 struct dw_mipi_dsi *dsi = dev_get_drvdata(dev);
1309 pm_runtime_disable(dev);
1310 clk_disable_unprepare(dsi->pllref_clk);
1313 static const struct component_ops dw_mipi_dsi_ops = {
1314 .bind = dw_mipi_dsi_bind,
1315 .unbind = dw_mipi_dsi_unbind,
1318 static int dw_mipi_dsi_probe(struct platform_device *pdev)
1320 struct device *dev = &pdev->dev;
1321 const struct of_device_id *of_id =
1322 of_match_device(dw_mipi_dsi_dt_ids, dev);
1323 const struct dw_mipi_dsi_plat_data *pdata = of_id->data;
1324 struct dw_mipi_dsi *dsi;
1327 dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
1333 dsi->dsi_host.ops = &dw_mipi_dsi_host_ops;
1334 dsi->dsi_host.dev = &pdev->dev;
1336 ret = mipi_dsi_host_register(&dsi->dsi_host);
1340 platform_set_drvdata(pdev, dsi);
1341 ret = component_add(&pdev->dev, &dw_mipi_dsi_ops);
1343 mipi_dsi_host_unregister(&dsi->dsi_host);
1348 static int dw_mipi_dsi_remove(struct platform_device *pdev)
1350 struct dw_mipi_dsi *dsi = dev_get_drvdata(&pdev->dev);
1353 mipi_dsi_host_unregister(&dsi->dsi_host);
1354 component_del(&pdev->dev, &dw_mipi_dsi_ops);
1358 static struct platform_driver dw_mipi_dsi_driver = {
1359 .probe = dw_mipi_dsi_probe,
1360 .remove = dw_mipi_dsi_remove,
1362 .of_match_table = dw_mipi_dsi_dt_ids,
1363 .name = DRIVER_NAME,
1366 module_platform_driver(dw_mipi_dsi_driver);
1368 MODULE_DESCRIPTION("ROCKCHIP MIPI DSI host controller driver");
1369 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
1370 MODULE_LICENSE("GPL");
1371 MODULE_ALIAS("platform:" DRIVER_NAME);