2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
4 * Mark Yao <mark.yao@rock-chips.com>
6 * This software is licensed under the terms of the GNU General Public
7 * License version 2, as published by the Free Software Foundation, and
8 * may be copied, distributed, and modified under those terms.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc_helper.h>
19 #include <drm/drm_dp_helper.h>
20 #include <drm/drm_panel.h>
21 #include <drm/drm_of.h>
23 #include <linux/component.h>
24 #include <linux/clk.h>
25 #include <linux/mfd/syscon.h>
26 #include <linux/of_graph.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/regmap.h>
29 #include <linux/reset.h>
31 #include <video/display_timing.h>
33 #include "rockchip_drm_drv.h"
34 #include "rockchip_drm_vop.h"
35 #include "rockchip_lvds.h"
37 #define DISPLAY_OUTPUT_RGB 0
38 #define DISPLAY_OUTPUT_LVDS 1
39 #define DISPLAY_OUTPUT_DUAL_LVDS 2
41 #define connector_to_lvds(c) \
42 container_of(c, struct rockchip_lvds, connector)
44 #define encoder_to_lvds(c) \
45 container_of(c, struct rockchip_lvds, encoder)
46 #define LVDS_CHIP(lvds) ((lvds)->soc_data->chip_type)
49 * @grf_offset: offset inside the grf regmap for setting the rockchip lvds
51 struct rockchip_lvds_soc_data {
61 struct rockchip_lvds {
65 void __iomem *regs_ctrl;
68 struct clk *pclk_ctrl;
69 const struct rockchip_lvds_soc_data *soc_data;
74 struct drm_device *drm_dev;
75 struct drm_panel *panel;
76 struct drm_bridge *bridge;
77 struct drm_connector connector;
78 struct drm_encoder encoder;
80 struct mutex suspend_lock;
82 struct dev_pin_info *pins;
83 struct drm_display_mode mode;
86 static inline void lvds_writel(struct rockchip_lvds *lvds, u32 offset, u32 val)
88 writel_relaxed(val, lvds->regs + offset);
89 if ((lvds->output == DISPLAY_OUTPUT_DUAL_LVDS) &&
90 (LVDS_CHIP(lvds) == RK3288_LVDS))
91 writel_relaxed(val, lvds->regs + offset + 0x100);
94 static inline void lvds_msk_reg(struct rockchip_lvds *lvds, u32 offset,
99 temp = readl_relaxed(lvds->regs + offset) & (0xFF - (msk));
100 writel_relaxed(temp | ((val) & (msk)), lvds->regs + offset);
103 static inline void lvds_dsi_writel(struct rockchip_lvds *lvds,
106 writel_relaxed(val, lvds->regs_ctrl + offset);
109 static inline u32 lvds_phy_lockon(struct rockchip_lvds *lvds)
113 val = readl_relaxed(lvds->regs_ctrl + MIPIC_PHY_STATUS);
114 return (val & m_PHY_LOCK_STATUS) ? 1 : 0;
117 static inline int lvds_name_to_format(const char *s)
122 if (strncmp(s, "jeida", 6) == 0)
123 return LVDS_FORMAT_JEIDA;
124 else if (strncmp(s, "vesa", 5) == 0)
125 return LVDS_FORMAT_VESA;
130 static inline int lvds_name_to_output(const char *s)
135 if (strncmp(s, "rgb", 3) == 0)
136 return DISPLAY_OUTPUT_RGB;
137 else if (strncmp(s, "lvds", 4) == 0)
138 return DISPLAY_OUTPUT_LVDS;
139 else if (strncmp(s, "duallvds", 8) == 0)
140 return DISPLAY_OUTPUT_DUAL_LVDS;
145 static int rk3288_lvds_poweron(struct rockchip_lvds *lvds)
147 if (lvds->output == DISPLAY_OUTPUT_RGB) {
148 lvds_writel(lvds, RK3288_LVDS_CH0_REG0,
149 RK3288_LVDS_CH0_REG0_TTL_EN |
150 RK3288_LVDS_CH0_REG0_LANECK_EN |
151 RK3288_LVDS_CH0_REG0_LANE4_EN |
152 RK3288_LVDS_CH0_REG0_LANE3_EN |
153 RK3288_LVDS_CH0_REG0_LANE2_EN |
154 RK3288_LVDS_CH0_REG0_LANE1_EN |
155 RK3288_LVDS_CH0_REG0_LANE0_EN);
156 lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
157 RK3288_LVDS_PLL_FBDIV_REG2(0x46));
159 lvds_writel(lvds, RK3288_LVDS_CH0_REG3,
160 RK3288_LVDS_PLL_FBDIV_REG3(0x46));
161 lvds_writel(lvds, RK3288_LVDS_CH0_REG4,
162 RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |
163 RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |
164 RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |
165 RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |
166 RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |
167 RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);
168 lvds_writel(lvds, RK3288_LVDS_CH0_REG5,
169 RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |
170 RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |
171 RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |
172 RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |
173 RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |
174 RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);
175 lvds_writel(lvds, RK3288_LVDS_CH0_REGD,
176 RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
177 lvds_writel(lvds, RK3288_LVDS_CH0_REG20,
178 RK3288_LVDS_CH0_REG20_LSB);
180 lvds_writel(lvds, RK3288_LVDS_CH0_REG0,
181 RK3288_LVDS_CH0_REG0_LVDS_EN |
182 RK3288_LVDS_CH0_REG0_LANECK_EN |
183 RK3288_LVDS_CH0_REG0_LANE4_EN |
184 RK3288_LVDS_CH0_REG0_LANE3_EN |
185 RK3288_LVDS_CH0_REG0_LANE2_EN |
186 RK3288_LVDS_CH0_REG0_LANE1_EN |
187 RK3288_LVDS_CH0_REG0_LANE0_EN);
188 lvds_writel(lvds, RK3288_LVDS_CH0_REG1,
189 RK3288_LVDS_CH0_REG1_LANECK_BIAS |
190 RK3288_LVDS_CH0_REG1_LANE4_BIAS |
191 RK3288_LVDS_CH0_REG1_LANE3_BIAS |
192 RK3288_LVDS_CH0_REG1_LANE2_BIAS |
193 RK3288_LVDS_CH0_REG1_LANE1_BIAS |
194 RK3288_LVDS_CH0_REG1_LANE0_BIAS);
195 lvds_writel(lvds, RK3288_LVDS_CH0_REG2,
196 RK3288_LVDS_CH0_REG2_RESERVE_ON |
197 RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |
198 RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |
199 RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |
200 RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |
201 RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |
202 RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |
203 RK3288_LVDS_PLL_FBDIV_REG2(0x46));
204 lvds_writel(lvds, RK3288_LVDS_CH0_REG3,
205 RK3288_LVDS_PLL_FBDIV_REG3(0x46));
206 lvds_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);
207 lvds_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);
208 lvds_writel(lvds, RK3288_LVDS_CH0_REGD,
209 RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
210 lvds_writel(lvds, RK3288_LVDS_CH0_REG20,
211 RK3288_LVDS_CH0_REG20_LSB);
214 writel(RK3288_LVDS_CFG_REGC_PLL_ENABLE,
215 lvds->regs + RK3288_LVDS_CFG_REGC);
216 writel(RK3288_LVDS_CFG_REG21_TX_ENABLE,
217 lvds->regs + RK3288_LVDS_CFG_REG21);
222 static int rk336x_lvds_poweron(struct rockchip_lvds *lvds)
224 u32 delay_times = 20;
227 if (lvds->output == DISPLAY_OUTPUT_RGB) {
229 lvds_writel(lvds, MIPIPHY_REG0, 0x7f);
230 val = v_LANE0_EN(1) | v_LANE1_EN(1) | v_LANE2_EN(1) |
231 v_LANE3_EN(1) | v_LANECLK_EN(1) | v_PLL_PWR_OFF(1);
232 lvds_writel(lvds, MIPIPHY_REGEB, val);
234 /* set ttl mode and reset phy config */
235 val = v_LVDS_MODE_EN(0) | v_TTL_MODE_EN(1) | v_MIPI_MODE_EN(0) |
236 v_MSB_SEL(1) | v_DIG_INTER_RST(1);
237 lvds_writel(lvds, MIPIPHY_REGE0, val);
239 lvds_msk_reg(lvds, MIPIPHY_REGE3,
240 m_MIPI_EN | m_LVDS_EN | m_TTL_EN,
241 v_MIPI_EN(0) | v_LVDS_EN(0) | v_TTL_EN(1));
243 /* set clock lane enable */
244 lvds_dsi_writel(lvds, MIPIC_PHY_RSTZ, m_PHY_ENABLE_CLK);
246 /* digital internal disable */
247 lvds_msk_reg(lvds, MIPIPHY_REGE1,
248 m_DIG_INTER_EN, v_DIG_INTER_EN(0));
250 /* set pll prediv and fbdiv */
251 lvds_writel(lvds, MIPIPHY_REG3, v_PREDIV(2) | v_FBDIV_MSB(0));
252 lvds_writel(lvds, MIPIPHY_REG4, v_FBDIV_LSB(28));
254 lvds_writel(lvds, MIPIPHY_REGE8, 0xfc);
256 /* set lvds mode and reset phy config */
257 lvds_msk_reg(lvds, MIPIPHY_REGE0,
258 m_MSB_SEL | m_DIG_INTER_RST,
259 v_MSB_SEL(1) | v_DIG_INTER_RST(1));
261 /* set VOCM 900 mv and V-DIFF 350 mv */
262 lvds_msk_reg(lvds, MIPIPHY_REGE4, m_VOCM | m_DIFF_V,
263 v_VOCM(0) | v_DIFF_V(2));
264 /* power up lvds pll and ldo */
265 lvds_msk_reg(lvds, MIPIPHY_REG1,
266 m_SYNC_RST | m_LDO_PWR_DOWN | m_PLL_PWR_DOWN,
267 v_SYNC_RST(0) | v_LDO_PWR_DOWN(0) |
269 /* enable lvds lane and power on pll */
270 lvds_writel(lvds, MIPIPHY_REGEB,
271 v_LANE0_EN(1) | v_LANE1_EN(1) | v_LANE2_EN(1) |
272 v_LANE3_EN(1) | v_LANECLK_EN(1) | v_PLL_PWR_OFF(0));
275 lvds_msk_reg(lvds, MIPIPHY_REGE3,
276 m_MIPI_EN | m_LVDS_EN | m_TTL_EN,
277 v_MIPI_EN(0) | v_LVDS_EN(1) | v_TTL_EN(0));
279 /* delay for waitting pll lock on */
280 while (delay_times--) {
281 if (lvds_phy_lockon(lvds))
283 usleep_range(100, 200);
286 if (delay_times <= 0)
288 "wait phy lockon failed, please check hardware\n");
290 lvds_msk_reg(lvds, MIPIPHY_REGE1,
291 m_DIG_INTER_EN, v_DIG_INTER_EN(1));
297 static int rockchip_lvds_poweron(struct rockchip_lvds *lvds)
302 ret = clk_enable(lvds->pclk);
304 dev_err(lvds->dev, "failed to enable lvds pclk %d\n", ret);
308 if (lvds->pclk_ctrl) {
309 ret = clk_enable(lvds->pclk_ctrl);
311 dev_err(lvds->dev, "failed to enable lvds pclk_ctrl %d\n", ret);
316 ret = pm_runtime_get_sync(lvds->dev);
318 dev_err(lvds->dev, "failed to get pm runtime: %d\n", ret);
321 if (LVDS_CHIP(lvds) == RK3288_LVDS)
322 rk3288_lvds_poweron(lvds);
323 else if (LVDS_CHIP(lvds) == RK336X_LVDS)
324 rk336x_lvds_poweron(lvds);
329 static void rockchip_lvds_poweroff(struct rockchip_lvds *lvds)
334 if (LVDS_CHIP(lvds) == RK3288_LVDS) {
335 writel(RK3288_LVDS_CFG_REG21_TX_DISABLE,
336 lvds->regs + RK3288_LVDS_CFG_REG21);
337 writel(RK3288_LVDS_CFG_REGC_PLL_DISABLE,
338 lvds->regs + RK3288_LVDS_CFG_REGC);
339 ret = regmap_write(lvds->grf,
340 lvds->soc_data->grf_soc_con7, 0xffff8000);
342 dev_err(lvds->dev, "Could not write to GRF: %d\n", ret);
344 pm_runtime_put(lvds->dev);
346 clk_disable(lvds->pclk);
347 } else if (LVDS_CHIP(lvds) == RK336X_LVDS) {
348 val = v_RK336X_LVDSMODE_EN(0) | v_RK336X_MIPIPHY_TTL_EN(0);
349 ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
351 dev_err(lvds->dev, "Could not write to GRF: %d\n", ret);
355 /* disable lvds lane and power off pll */
356 lvds_writel(lvds, MIPIPHY_REGEB,
357 v_LANE0_EN(0) | v_LANE1_EN(0) | v_LANE2_EN(0) |
358 v_LANE3_EN(0) | v_LANECLK_EN(0) | v_PLL_PWR_OFF(1));
360 /* power down lvds pll and bandgap */
361 lvds_msk_reg(lvds, MIPIPHY_REG1,
362 m_SYNC_RST | m_LDO_PWR_DOWN | m_PLL_PWR_DOWN,
363 v_SYNC_RST(1) | v_LDO_PWR_DOWN(1) | v_PLL_PWR_DOWN(1));
366 lvds_msk_reg(lvds, MIPIPHY_REGE3, m_LVDS_EN | m_TTL_EN,
367 v_LVDS_EN(0) | v_TTL_EN(0));
368 pm_runtime_put(lvds->dev);
370 clk_disable(lvds->pclk);
372 clk_disable(lvds->pclk_ctrl);
376 static enum drm_connector_status
377 rockchip_lvds_connector_detect(struct drm_connector *connector, bool force)
379 return connector_status_connected;
382 static void rockchip_lvds_connector_destroy(struct drm_connector *connector)
384 drm_connector_cleanup(connector);
387 static const struct drm_connector_funcs rockchip_lvds_connector_funcs = {
388 .dpms = drm_atomic_helper_connector_dpms,
389 .detect = rockchip_lvds_connector_detect,
390 .fill_modes = drm_helper_probe_single_connector_modes,
391 .destroy = rockchip_lvds_connector_destroy,
392 .reset = drm_atomic_helper_connector_reset,
393 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
394 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
397 static int rockchip_lvds_connector_get_modes(struct drm_connector *connector)
399 struct rockchip_lvds *lvds = connector_to_lvds(connector);
400 struct drm_panel *panel = lvds->panel;
402 return panel->funcs->get_modes(panel);
405 static struct drm_encoder *
406 rockchip_lvds_connector_best_encoder(struct drm_connector *connector)
408 struct rockchip_lvds *lvds = connector_to_lvds(connector);
410 return &lvds->encoder;
413 static enum drm_mode_status rockchip_lvds_connector_mode_valid(
414 struct drm_connector *connector,
415 struct drm_display_mode *mode)
421 int rockchip_lvds_connector_loader_protect(struct drm_connector *connector,
424 struct rockchip_lvds *lvds = connector_to_lvds(connector);
427 drm_panel_loader_protect(lvds->panel, on);
433 struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
434 .get_modes = rockchip_lvds_connector_get_modes,
435 .mode_valid = rockchip_lvds_connector_mode_valid,
436 .best_encoder = rockchip_lvds_connector_best_encoder,
437 .loader_protect = rockchip_lvds_connector_loader_protect,
440 static void rockchip_lvds_encoder_dpms(struct drm_encoder *encoder, int mode)
442 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
445 mutex_lock(&lvds->suspend_lock);
448 case DRM_MODE_DPMS_ON:
452 drm_panel_prepare(lvds->panel);
453 ret = rockchip_lvds_poweron(lvds);
455 drm_panel_unprepare(lvds->panel);
458 drm_panel_enable(lvds->panel);
460 lvds->suspend = false;
462 case DRM_MODE_DPMS_STANDBY:
463 case DRM_MODE_DPMS_SUSPEND:
464 case DRM_MODE_DPMS_OFF:
468 drm_panel_disable(lvds->panel);
469 rockchip_lvds_poweroff(lvds);
470 drm_panel_unprepare(lvds->panel);
472 lvds->suspend = true;
479 mutex_unlock(&lvds->suspend_lock);
483 rockchip_lvds_encoder_mode_fixup(struct drm_encoder *encoder,
484 const struct drm_display_mode *mode,
485 struct drm_display_mode *adjusted_mode)
490 static void rockchip_lvds_encoder_mode_set(struct drm_encoder *encoder,
491 struct drm_display_mode *mode,
492 struct drm_display_mode *adjusted)
494 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
496 drm_mode_copy(&lvds->mode, adjusted);
499 static void rockchip_lvds_grf_config(struct drm_encoder *encoder,
500 struct drm_display_mode *mode)
502 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
503 u32 h_bp = mode->htotal - mode->hsync_start;
504 u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
505 u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0;
509 /* iomux to LCD data/sync mode */
510 if (lvds->output == DISPLAY_OUTPUT_RGB)
511 if (lvds->pins && !IS_ERR(lvds->pins->default_state))
512 pinctrl_select_state(lvds->pins->p,
513 lvds->pins->default_state);
514 if (LVDS_CHIP(lvds) == RK3288_LVDS) {
516 if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS)
517 val |= LVDS_DUAL | LVDS_CH0_EN | LVDS_CH1_EN;
518 else if (lvds->output == DISPLAY_OUTPUT_LVDS)
520 else if (lvds->output == DISPLAY_OUTPUT_RGB)
521 val |= LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN;
524 val |= LVDS_START_PHASE_RST_1;
526 val |= (pin_dclk << 8) | (pin_hsync << 9);
527 val |= (0xffff << 16);
528 ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con7, val);
530 dev_err(lvds->dev, "Could not write to GRF: %d\n", ret);
533 } else if (LVDS_CHIP(lvds) == RK336X_LVDS) {
534 if (lvds->output == DISPLAY_OUTPUT_RGB) {
535 /* enable lvds mode */
536 val = v_RK336X_LVDSMODE_EN(0) |
537 v_RK336X_MIPIPHY_TTL_EN(1) |
538 v_RK336X_MIPIPHY_LANE0_EN(1) |
539 v_RK336X_MIPIDPI_FORCEX_EN(1);
540 ret = regmap_write(lvds->grf,
541 lvds->soc_data->grf_soc_con7, val);
544 "Could not write to GRF: %d\n", ret);
547 val = v_RK336X_FORCE_JETAG(0);
548 ret = regmap_write(lvds->grf,
549 lvds->soc_data->grf_soc_con15, val);
552 "Could not write to GRF: %d\n", ret);
555 } else if (lvds->output == DISPLAY_OUTPUT_LVDS) {
556 /* enable lvds mode */
557 val = v_RK336X_LVDSMODE_EN(1) |
558 v_RK336X_MIPIPHY_TTL_EN(0);
559 /* config lvds_format */
560 val |= v_RK336X_LVDS_OUTPUT_FORMAT(lvds->format);
561 /* LSB receive mode */
562 val |= v_RK336X_LVDS_MSBSEL(LVDS_MSB_D7);
563 val |= v_RK336X_MIPIPHY_LANE0_EN(1) |
564 v_RK336X_MIPIDPI_FORCEX_EN(1);
565 ret = regmap_write(lvds->grf,
566 lvds->soc_data->grf_soc_con7, val);
569 "Could not write to GRF: %d\n", ret);
576 static int rockchip_lvds_set_vop_source(struct rockchip_lvds *lvds,
577 struct drm_encoder *encoder)
582 if (!lvds->soc_data->has_vop_sel)
585 ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
589 if (LVDS_CHIP(lvds) == RK3288_LVDS) {
591 val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT |
592 (RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16);
594 val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16;
596 ret = regmap_write(lvds->grf, lvds->soc_data->grf_soc_con6, val);
601 val = RK3366_LVDS_VOP_SEL_LIT;
603 val = RK3366_LVDS_VOP_SEL_BIG;
604 regmap_write(lvds->grf, RK3366_GRF_SOC_CON0, val);
611 rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,
612 struct drm_crtc_state *crtc_state,
613 struct drm_connector_state *conn_state)
615 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
616 struct drm_connector *connector = conn_state->connector;
617 struct drm_display_info *info = &connector->display_info;
619 s->output_mode = ROCKCHIP_OUT_MODE_P888;
620 s->output_type = DRM_MODE_CONNECTOR_LVDS;
621 if (info->num_bus_formats)
622 s->bus_format = info->bus_formats[0];
627 static void rockchip_lvds_encoder_enable(struct drm_encoder *encoder)
629 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
631 rockchip_lvds_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
632 rockchip_lvds_grf_config(encoder, &lvds->mode);
633 rockchip_lvds_set_vop_source(lvds, encoder);
636 static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder)
638 rockchip_lvds_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
641 static int rockchip_lvds_encoder_loader_protect(struct drm_encoder *encoder,
644 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
647 pm_runtime_get_sync(lvds->dev);
649 pm_runtime_put(lvds->dev);
655 struct drm_encoder_helper_funcs rockchip_lvds_encoder_helper_funcs = {
656 .mode_fixup = rockchip_lvds_encoder_mode_fixup,
657 .mode_set = rockchip_lvds_encoder_mode_set,
658 .enable = rockchip_lvds_encoder_enable,
659 .disable = rockchip_lvds_encoder_disable,
660 .atomic_check = rockchip_lvds_encoder_atomic_check,
661 .loader_protect = rockchip_lvds_encoder_loader_protect,
664 static void rockchip_lvds_encoder_destroy(struct drm_encoder *encoder)
666 drm_encoder_cleanup(encoder);
669 static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
670 .destroy = rockchip_lvds_encoder_destroy,
673 static struct rockchip_lvds_soc_data rk3288_lvds_data = {
674 .chip_type = RK3288_LVDS,
675 .grf_soc_con6 = 0x025c,
676 .grf_soc_con7 = 0x0260,
680 static struct rockchip_lvds_soc_data rk3366_lvds_data = {
681 .chip_type = RK336X_LVDS,
682 .grf_soc_con7 = RK3366_GRF_SOC_CON5,
683 .grf_soc_con15 = RK3366_GRF_SOC_CON6,
687 static struct rockchip_lvds_soc_data rk3368_lvds_data = {
688 .chip_type = RK336X_LVDS,
689 .grf_soc_con7 = RK3368_GRF_SOC_CON7,
690 .grf_soc_con15 = RK3368_GRF_SOC_CON15,
691 .has_vop_sel = false,
694 static const struct of_device_id rockchip_lvds_dt_ids[] = {
696 .compatible = "rockchip,rk3288-lvds",
697 .data = &rk3288_lvds_data
700 .compatible = "rockchip,rk3366-lvds",
701 .data = &rk3366_lvds_data
704 .compatible = "rockchip,rk3368-lvds",
705 .data = &rk3368_lvds_data
709 MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids);
711 static int rockchip_lvds_bind(struct device *dev, struct device *master,
714 struct rockchip_lvds *lvds = dev_get_drvdata(dev);
715 struct drm_device *drm_dev = data;
716 struct drm_encoder *encoder;
717 struct drm_connector *connector;
718 struct device_node *remote = NULL;
719 struct device_node *port, *endpoint;
722 lvds->drm_dev = drm_dev;
724 port = of_graph_get_port_by_id(dev->of_node, 1);
726 dev_err(dev, "can't found port point, please init lvds panel port!\n");
730 for_each_child_of_node(port, endpoint) {
731 remote = of_graph_get_remote_port_parent(endpoint);
733 dev_err(dev, "can't found panel node, please init!\n");
737 if (!of_device_is_available(remote)) {
745 dev_err(dev, "can't found remote node, please init!\n");
750 lvds->panel = of_drm_find_panel(remote);
752 lvds->bridge = of_drm_find_bridge(remote);
754 if (!lvds->panel && !lvds->bridge) {
755 DRM_ERROR("failed to find panel and bridge node\n");
760 if (of_property_read_string(remote, "rockchip,output", &name))
761 /* default set it as output rgb */
762 lvds->output = DISPLAY_OUTPUT_RGB;
764 lvds->output = lvds_name_to_output(name);
766 if (lvds->output < 0) {
767 dev_err(dev, "invalid output type [%s]\n", name);
772 if (of_property_read_string(remote, "rockchip,data-mapping",
774 /* default set it as format jeida */
775 lvds->format = LVDS_FORMAT_JEIDA;
777 lvds->format = lvds_name_to_format(name);
779 if (lvds->format < 0) {
780 dev_err(dev, "invalid data-mapping format [%s]\n", name);
785 if (of_property_read_u32(remote, "rockchip,data-width", &i)) {
786 lvds->format |= LVDS_24BIT;
789 lvds->format |= LVDS_24BIT;
790 } else if (i == 18) {
791 lvds->format |= LVDS_18BIT;
794 "rockchip-lvds unsupport data-width[%d]\n", i);
800 encoder = &lvds->encoder;
801 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
804 ret = drm_encoder_init(drm_dev, encoder, &rockchip_lvds_encoder_funcs,
805 DRM_MODE_ENCODER_LVDS, NULL);
807 DRM_ERROR("failed to initialize encoder with drm\n");
811 drm_encoder_helper_add(encoder, &rockchip_lvds_encoder_helper_funcs);
812 encoder->port = dev->of_node;
815 connector = &lvds->connector;
816 connector->dpms = DRM_MODE_DPMS_OFF;
817 ret = drm_connector_init(drm_dev, connector,
818 &rockchip_lvds_connector_funcs,
819 DRM_MODE_CONNECTOR_LVDS);
821 DRM_ERROR("failed to initialize connector with drm\n");
822 goto err_free_encoder;
825 drm_connector_helper_add(connector,
826 &rockchip_lvds_connector_helper_funcs);
828 ret = drm_mode_connector_attach_encoder(connector, encoder);
830 DRM_ERROR("failed to attach connector and encoder\n");
831 goto err_free_connector;
834 ret = drm_panel_attach(lvds->panel, connector);
836 DRM_ERROR("failed to attach connector and encoder\n");
837 goto err_free_connector;
839 lvds->connector.port = dev->of_node;
841 lvds->bridge->encoder = encoder;
842 ret = drm_bridge_attach(drm_dev, lvds->bridge);
844 DRM_ERROR("Failed to attach bridge to drm\n");
845 goto err_free_encoder;
847 encoder->bridge = lvds->bridge;
850 pm_runtime_enable(dev);
857 drm_connector_cleanup(connector);
859 drm_encoder_cleanup(encoder);
868 static void rockchip_lvds_unbind(struct device *dev, struct device *master,
871 struct rockchip_lvds *lvds = dev_get_drvdata(dev);
873 rockchip_lvds_encoder_dpms(&lvds->encoder, DRM_MODE_DPMS_OFF);
875 drm_panel_detach(lvds->panel);
877 drm_connector_cleanup(&lvds->connector);
878 drm_encoder_cleanup(&lvds->encoder);
880 pm_runtime_disable(dev);
883 static const struct component_ops rockchip_lvds_component_ops = {
884 .bind = rockchip_lvds_bind,
885 .unbind = rockchip_lvds_unbind,
888 static int rockchip_lvds_probe(struct platform_device *pdev)
890 struct device *dev = &pdev->dev;
891 struct rockchip_lvds *lvds;
892 const struct of_device_id *match;
893 struct resource *res;
899 lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
904 lvds->suspend = true;
905 match = of_match_node(rockchip_lvds_dt_ids, dev->of_node);
906 lvds->soc_data = match->data;
908 if (LVDS_CHIP(lvds) == RK3288_LVDS) {
909 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
910 lvds->regs = devm_ioremap_resource(&pdev->dev, res);
911 if (IS_ERR(lvds->regs))
912 return PTR_ERR(lvds->regs);
913 } else if (LVDS_CHIP(lvds) == RK336X_LVDS) {
914 /* lvds regs on MIPIPHY_REG */
915 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
917 lvds->regs = devm_ioremap_resource(&pdev->dev, res);
918 if (IS_ERR(lvds->regs)) {
919 dev_err(&pdev->dev, "ioremap lvds phy reg failed\n");
920 return PTR_ERR(lvds->regs);
923 /* pll lock on status reg that is MIPICTRL Register */
924 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
926 lvds->regs_ctrl = devm_ioremap_resource(&pdev->dev, res);
927 if (IS_ERR(lvds->regs_ctrl)) {
928 dev_err(&pdev->dev, "ioremap lvds ctl reg failed\n");
929 return PTR_ERR(lvds->regs_ctrl);
931 /* mipi ctrl clk for read lvds phy lock state */
932 lvds->pclk_ctrl = devm_clk_get(&pdev->dev, "pclk_lvds_ctl");
933 if (IS_ERR(lvds->pclk_ctrl)) {
934 dev_err(dev, "could not get pclk_ctrl\n");
935 lvds->pclk_ctrl = NULL;
938 lvds->pclk = devm_clk_get(&pdev->dev, "pclk_lvds");
939 if (IS_ERR(lvds->pclk)) {
940 dev_err(dev, "could not get pclk_lvds\n");
941 return PTR_ERR(lvds->pclk);
944 lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins),
949 lvds->pins->p = devm_pinctrl_get(lvds->dev);
950 if (IS_ERR(lvds->pins->p)) {
951 dev_info(lvds->dev, "no pinctrl handle\n");
952 devm_kfree(lvds->dev, lvds->pins);
955 lvds->pins->default_state =
956 pinctrl_lookup_state(lvds->pins->p, "lcdc");
957 if (IS_ERR(lvds->pins->default_state)) {
958 dev_info(lvds->dev, "no lcdc pinctrl state\n");
959 devm_kfree(lvds->dev, lvds->pins);
964 lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
966 if (IS_ERR(lvds->grf)) {
967 dev_err(dev, "missing rockchip,grf property\n");
968 return PTR_ERR(lvds->grf);
971 dev_set_drvdata(dev, lvds);
972 mutex_init(&lvds->suspend_lock);
975 ret = clk_prepare(lvds->pclk);
977 dev_err(dev, "failed to prepare pclk_lvds\n");
981 if (lvds->pclk_ctrl) {
982 ret = clk_prepare(lvds->pclk_ctrl);
984 dev_err(dev, "failed to prepare pclk_ctrl lvds\n");
988 ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);
991 clk_unprepare(lvds->pclk);
993 clk_unprepare(lvds->pclk_ctrl);
999 static int rockchip_lvds_remove(struct platform_device *pdev)
1001 struct rockchip_lvds *lvds = dev_get_drvdata(&pdev->dev);
1003 component_del(&pdev->dev, &rockchip_lvds_component_ops);
1005 clk_unprepare(lvds->pclk);
1006 if (lvds->pclk_ctrl)
1007 clk_unprepare(lvds->pclk_ctrl);
1011 struct platform_driver rockchip_lvds_driver = {
1012 .probe = rockchip_lvds_probe,
1013 .remove = rockchip_lvds_remove,
1015 .name = "rockchip-lvds",
1016 .of_match_table = of_match_ptr(rockchip_lvds_dt_ids),
1019 module_platform_driver(rockchip_lvds_driver);
1021 MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
1022 MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
1023 MODULE_DESCRIPTION("ROCKCHIP LVDS Driver");
1024 MODULE_LICENSE("GPL v2");