1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
7 #include <linux/delay.h>
8 #include <linux/dma-mapping.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/interrupt.h>
12 #include <linux/mfd/syscon.h>
13 #include <linux/of_device.h>
14 #include <linux/of_graph.h>
15 #include <linux/of_irq.h>
16 #include <linux/pinctrl/consumer.h>
17 #include <linux/regmap.h>
18 #include <linux/regulator/consumer.h>
19 #include <linux/spinlock.h>
21 #include <video/mipi_display.h>
29 static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor)
37 * From DSI6G(v3), addition of a 6G_HW_VERSION register at offset 0
38 * makes all other registers 4-byte shifted down.
40 * In order to identify between DSI6G(v3) and beyond, and DSIv2 and
41 * older, we read the DSI_VERSION register without any shift(offset
42 * 0x1f0). In the case of DSIv2, this hast to be a non-zero value. In
43 * the case of DSI6G, this has to be zero (the offset points to a
44 * scratch register which we never touch)
47 ver = msm_readl(base + REG_DSI_VERSION);
49 /* older dsi host, there is no register shift */
50 ver = FIELD(ver, DSI_VERSION_MAJOR);
51 if (ver <= MSM_DSI_VER_MAJOR_V2) {
61 * newer host, offset 0 has 6G_HW_VERSION, the rest of the
62 * registers are shifted down, read DSI_VERSION again with
65 ver = msm_readl(base + DSI_6G_REG_SHIFT + REG_DSI_VERSION);
66 ver = FIELD(ver, DSI_VERSION_MAJOR);
67 if (ver == MSM_DSI_VER_MAJOR_6G) {
70 *minor = msm_readl(base + REG_DSI_6G_HW_VERSION);
78 #define DSI_ERR_STATE_ACK 0x0000
79 #define DSI_ERR_STATE_TIMEOUT 0x0001
80 #define DSI_ERR_STATE_DLN0_PHY 0x0002
81 #define DSI_ERR_STATE_FIFO 0x0004
82 #define DSI_ERR_STATE_MDP_FIFO_UNDERFLOW 0x0008
83 #define DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION 0x0010
84 #define DSI_ERR_STATE_PLL_UNLOCKED 0x0020
86 #define DSI_CLK_CTRL_ENABLE_CLKS \
87 (DSI_CLK_CTRL_AHBS_HCLK_ON | DSI_CLK_CTRL_AHBM_SCLK_ON | \
88 DSI_CLK_CTRL_PCLK_ON | DSI_CLK_CTRL_DSICLK_ON | \
89 DSI_CLK_CTRL_BYTECLK_ON | DSI_CLK_CTRL_ESCCLK_ON | \
90 DSI_CLK_CTRL_FORCE_ON_DYN_AHBM_HCLK)
93 struct mipi_dsi_host base;
95 struct platform_device *pdev;
96 struct drm_device *dev;
100 void __iomem *ctrl_base;
101 struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX];
103 struct clk *bus_clks[DSI_BUS_CLK_MAX];
105 struct clk *byte_clk;
107 struct clk *pixel_clk;
108 struct clk *byte_clk_src;
109 struct clk *pixel_clk_src;
110 struct clk *byte_intf_clk;
116 /* DSI v2 specific clocks */
118 struct clk *esc_clk_src;
119 struct clk *dsi_clk_src;
123 struct gpio_desc *disp_en_gpio;
124 struct gpio_desc *te_gpio;
126 const struct msm_dsi_cfg_handler *cfg_hnd;
128 struct completion dma_comp;
129 struct completion video_comp;
130 struct mutex dev_mutex;
131 struct mutex cmd_mutex;
132 spinlock_t intr_lock; /* Protect interrupt ctrl register */
135 struct work_struct err_work;
136 struct work_struct hpd_work;
137 struct workqueue_struct *workqueue;
139 /* DSI 6G TX buffer*/
140 struct drm_gem_object *tx_gem_obj;
142 /* DSI v2 TX buffer */
144 dma_addr_t tx_buf_paddr;
152 struct drm_display_mode *mode;
154 /* connected device info */
155 struct device_node *device_node;
156 unsigned int channel;
158 enum mipi_dsi_pixel_format format;
159 unsigned long mode_flags;
161 /* lane data parsed via DT */
165 u32 dma_cmd_ctrl_restore;
173 static u32 dsi_get_bpp(const enum mipi_dsi_pixel_format fmt)
176 case MIPI_DSI_FMT_RGB565: return 16;
177 case MIPI_DSI_FMT_RGB666_PACKED: return 18;
178 case MIPI_DSI_FMT_RGB666:
179 case MIPI_DSI_FMT_RGB888:
184 static inline u32 dsi_read(struct msm_dsi_host *msm_host, u32 reg)
186 return msm_readl(msm_host->ctrl_base + reg);
188 static inline void dsi_write(struct msm_dsi_host *msm_host, u32 reg, u32 data)
190 msm_writel(data, msm_host->ctrl_base + reg);
193 static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host);
194 static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host);
196 static const struct msm_dsi_cfg_handler *dsi_get_config(
197 struct msm_dsi_host *msm_host)
199 const struct msm_dsi_cfg_handler *cfg_hnd = NULL;
200 struct device *dev = &msm_host->pdev->dev;
201 struct regulator *gdsc_reg;
204 u32 major = 0, minor = 0;
206 gdsc_reg = regulator_get(dev, "gdsc");
207 if (IS_ERR(gdsc_reg)) {
208 pr_err("%s: cannot get gdsc\n", __func__);
212 ahb_clk = msm_clk_get(msm_host->pdev, "iface");
213 if (IS_ERR(ahb_clk)) {
214 pr_err("%s: cannot get interface clock\n", __func__);
218 pm_runtime_get_sync(dev);
220 ret = regulator_enable(gdsc_reg);
222 pr_err("%s: unable to enable gdsc\n", __func__);
226 ret = clk_prepare_enable(ahb_clk);
228 pr_err("%s: unable to enable ahb_clk\n", __func__);
232 ret = dsi_get_version(msm_host->ctrl_base, &major, &minor);
234 pr_err("%s: Invalid version\n", __func__);
238 cfg_hnd = msm_dsi_cfg_get(major, minor);
240 DBG("%s: Version %x:%x\n", __func__, major, minor);
243 clk_disable_unprepare(ahb_clk);
245 regulator_disable(gdsc_reg);
246 pm_runtime_put_sync(dev);
248 regulator_put(gdsc_reg);
253 static inline struct msm_dsi_host *to_msm_dsi_host(struct mipi_dsi_host *host)
255 return container_of(host, struct msm_dsi_host, base);
258 static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host)
260 struct regulator_bulk_data *s = msm_host->supplies;
261 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
262 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
266 for (i = num - 1; i >= 0; i--)
267 if (regs[i].disable_load >= 0)
268 regulator_set_load(s[i].consumer,
269 regs[i].disable_load);
271 regulator_bulk_disable(num, s);
274 static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host)
276 struct regulator_bulk_data *s = msm_host->supplies;
277 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
278 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
282 for (i = 0; i < num; i++) {
283 if (regs[i].enable_load >= 0) {
284 ret = regulator_set_load(s[i].consumer,
285 regs[i].enable_load);
287 pr_err("regulator %d set op mode failed, %d\n",
294 ret = regulator_bulk_enable(num, s);
296 pr_err("regulator enable failed, %d\n", ret);
303 for (i--; i >= 0; i--)
304 regulator_set_load(s[i].consumer, regs[i].disable_load);
308 static int dsi_regulator_init(struct msm_dsi_host *msm_host)
310 struct regulator_bulk_data *s = msm_host->supplies;
311 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
312 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
315 for (i = 0; i < num; i++)
316 s[i].supply = regs[i].name;
318 ret = devm_regulator_bulk_get(&msm_host->pdev->dev, num, s);
320 pr_err("%s: failed to init regulator, ret=%d\n",
328 int dsi_clk_init_v2(struct msm_dsi_host *msm_host)
330 struct platform_device *pdev = msm_host->pdev;
333 msm_host->src_clk = msm_clk_get(pdev, "src");
335 if (IS_ERR(msm_host->src_clk)) {
336 ret = PTR_ERR(msm_host->src_clk);
337 pr_err("%s: can't find src clock. ret=%d\n",
339 msm_host->src_clk = NULL;
343 msm_host->esc_clk_src = clk_get_parent(msm_host->esc_clk);
344 if (!msm_host->esc_clk_src) {
346 pr_err("%s: can't get esc clock parent. ret=%d\n",
351 msm_host->dsi_clk_src = clk_get_parent(msm_host->src_clk);
352 if (!msm_host->dsi_clk_src) {
354 pr_err("%s: can't get src clock parent. ret=%d\n",
361 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host)
363 struct platform_device *pdev = msm_host->pdev;
366 msm_host->byte_intf_clk = msm_clk_get(pdev, "byte_intf");
367 if (IS_ERR(msm_host->byte_intf_clk)) {
368 ret = PTR_ERR(msm_host->byte_intf_clk);
369 pr_err("%s: can't find byte_intf clock. ret=%d\n",
376 static int dsi_clk_init(struct msm_dsi_host *msm_host)
378 struct platform_device *pdev = msm_host->pdev;
379 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
380 const struct msm_dsi_config *cfg = cfg_hnd->cfg;
384 for (i = 0; i < cfg->num_bus_clks; i++) {
385 msm_host->bus_clks[i] = msm_clk_get(pdev,
386 cfg->bus_clk_names[i]);
387 if (IS_ERR(msm_host->bus_clks[i])) {
388 ret = PTR_ERR(msm_host->bus_clks[i]);
389 pr_err("%s: Unable to get %s clock, ret = %d\n",
390 __func__, cfg->bus_clk_names[i], ret);
395 /* get link and source clocks */
396 msm_host->byte_clk = msm_clk_get(pdev, "byte");
397 if (IS_ERR(msm_host->byte_clk)) {
398 ret = PTR_ERR(msm_host->byte_clk);
399 pr_err("%s: can't find dsi_byte clock. ret=%d\n",
401 msm_host->byte_clk = NULL;
405 msm_host->pixel_clk = msm_clk_get(pdev, "pixel");
406 if (IS_ERR(msm_host->pixel_clk)) {
407 ret = PTR_ERR(msm_host->pixel_clk);
408 pr_err("%s: can't find dsi_pixel clock. ret=%d\n",
410 msm_host->pixel_clk = NULL;
414 msm_host->esc_clk = msm_clk_get(pdev, "core");
415 if (IS_ERR(msm_host->esc_clk)) {
416 ret = PTR_ERR(msm_host->esc_clk);
417 pr_err("%s: can't find dsi_esc clock. ret=%d\n",
419 msm_host->esc_clk = NULL;
423 msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk);
424 if (IS_ERR(msm_host->byte_clk_src)) {
425 ret = PTR_ERR(msm_host->byte_clk_src);
426 pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret);
430 msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk);
431 if (IS_ERR(msm_host->pixel_clk_src)) {
432 ret = PTR_ERR(msm_host->pixel_clk_src);
433 pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret);
437 if (cfg_hnd->ops->clk_init_ver)
438 ret = cfg_hnd->ops->clk_init_ver(msm_host);
443 static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host)
445 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
448 DBG("id=%d", msm_host->id);
450 for (i = 0; i < cfg->num_bus_clks; i++) {
451 ret = clk_prepare_enable(msm_host->bus_clks[i]);
453 pr_err("%s: failed to enable bus clock %d ret %d\n",
462 clk_disable_unprepare(msm_host->bus_clks[i]);
467 static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host)
469 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
474 for (i = cfg->num_bus_clks - 1; i >= 0; i--)
475 clk_disable_unprepare(msm_host->bus_clks[i]);
478 int msm_dsi_runtime_suspend(struct device *dev)
480 struct platform_device *pdev = to_platform_device(dev);
481 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
482 struct mipi_dsi_host *host = msm_dsi->host;
483 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
485 if (!msm_host->cfg_hnd)
488 dsi_bus_clk_disable(msm_host);
493 int msm_dsi_runtime_resume(struct device *dev)
495 struct platform_device *pdev = to_platform_device(dev);
496 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
497 struct mipi_dsi_host *host = msm_dsi->host;
498 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
500 if (!msm_host->cfg_hnd)
503 return dsi_bus_clk_enable(msm_host);
506 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host)
510 DBG("Set clk rates: pclk=%d, byteclk=%d",
511 msm_host->mode->clock, msm_host->byte_clk_rate);
513 ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate);
515 pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret);
519 ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate);
521 pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret);
525 if (msm_host->byte_intf_clk) {
526 ret = clk_set_rate(msm_host->byte_intf_clk,
527 msm_host->byte_clk_rate / 2);
529 pr_err("%s: Failed to set rate byte intf clk, %d\n",
535 ret = clk_prepare_enable(msm_host->esc_clk);
537 pr_err("%s: Failed to enable dsi esc clk\n", __func__);
541 ret = clk_prepare_enable(msm_host->byte_clk);
543 pr_err("%s: Failed to enable dsi byte clk\n", __func__);
547 ret = clk_prepare_enable(msm_host->pixel_clk);
549 pr_err("%s: Failed to enable dsi pixel clk\n", __func__);
553 if (msm_host->byte_intf_clk) {
554 ret = clk_prepare_enable(msm_host->byte_intf_clk);
556 pr_err("%s: Failed to enable byte intf clk\n",
558 goto byte_intf_clk_err;
565 clk_disable_unprepare(msm_host->pixel_clk);
567 clk_disable_unprepare(msm_host->byte_clk);
569 clk_disable_unprepare(msm_host->esc_clk);
574 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host)
578 DBG("Set clk rates: pclk=%d, byteclk=%d, esc_clk=%d, dsi_src_clk=%d",
579 msm_host->mode->clock, msm_host->byte_clk_rate,
580 msm_host->esc_clk_rate, msm_host->src_clk_rate);
582 ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate);
584 pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret);
588 ret = clk_set_rate(msm_host->esc_clk, msm_host->esc_clk_rate);
590 pr_err("%s: Failed to set rate esc clk, %d\n", __func__, ret);
594 ret = clk_set_rate(msm_host->src_clk, msm_host->src_clk_rate);
596 pr_err("%s: Failed to set rate src clk, %d\n", __func__, ret);
600 ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate);
602 pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret);
606 ret = clk_prepare_enable(msm_host->byte_clk);
608 pr_err("%s: Failed to enable dsi byte clk\n", __func__);
612 ret = clk_prepare_enable(msm_host->esc_clk);
614 pr_err("%s: Failed to enable dsi esc clk\n", __func__);
618 ret = clk_prepare_enable(msm_host->src_clk);
620 pr_err("%s: Failed to enable dsi src clk\n", __func__);
624 ret = clk_prepare_enable(msm_host->pixel_clk);
626 pr_err("%s: Failed to enable dsi pixel clk\n", __func__);
633 clk_disable_unprepare(msm_host->src_clk);
635 clk_disable_unprepare(msm_host->esc_clk);
637 clk_disable_unprepare(msm_host->byte_clk);
642 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host)
644 clk_disable_unprepare(msm_host->esc_clk);
645 clk_disable_unprepare(msm_host->pixel_clk);
646 if (msm_host->byte_intf_clk)
647 clk_disable_unprepare(msm_host->byte_intf_clk);
648 clk_disable_unprepare(msm_host->byte_clk);
651 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host)
653 clk_disable_unprepare(msm_host->pixel_clk);
654 clk_disable_unprepare(msm_host->src_clk);
655 clk_disable_unprepare(msm_host->esc_clk);
656 clk_disable_unprepare(msm_host->byte_clk);
659 static u32 dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_dual_dsi)
661 struct drm_display_mode *mode = msm_host->mode;
664 pclk_rate = mode->clock * 1000;
667 * For dual DSI mode, the current DRM mode has the complete width of the
668 * panel. Since, the complete panel is driven by two DSI controllers,
669 * the clock rates have to be split between the two dsi controllers.
670 * Adjust the byte and pixel clock rates for each dsi host accordingly.
678 static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_dual_dsi)
680 u8 lanes = msm_host->lanes;
681 u32 bpp = dsi_get_bpp(msm_host->format);
682 u32 pclk_rate = dsi_get_pclk_rate(msm_host, is_dual_dsi);
683 u64 pclk_bpp = (u64)pclk_rate * bpp;
686 pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__);
690 do_div(pclk_bpp, (8 * lanes));
692 msm_host->pixel_clk_rate = pclk_rate;
693 msm_host->byte_clk_rate = pclk_bpp;
695 DBG("pclk=%d, bclk=%d", msm_host->pixel_clk_rate,
696 msm_host->byte_clk_rate);
700 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi)
702 if (!msm_host->mode) {
703 pr_err("%s: mode not set\n", __func__);
707 dsi_calc_pclk(msm_host, is_dual_dsi);
708 msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk);
712 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi)
714 u32 bpp = dsi_get_bpp(msm_host->format);
716 unsigned int esc_mhz, esc_div;
717 unsigned long byte_mhz;
719 dsi_calc_pclk(msm_host, is_dual_dsi);
721 pclk_bpp = (u64)dsi_get_pclk_rate(msm_host, is_dual_dsi) * bpp;
723 msm_host->src_clk_rate = pclk_bpp;
726 * esc clock is byte clock followed by a 4 bit divider,
727 * we need to find an escape clock frequency within the
728 * mipi DSI spec range within the maximum divider limit
729 * We iterate here between an escape clock frequencey
730 * between 20 Mhz to 5 Mhz and pick up the first one
731 * that can be supported by our divider
734 byte_mhz = msm_host->byte_clk_rate / 1000000;
736 for (esc_mhz = 20; esc_mhz >= 5; esc_mhz--) {
737 esc_div = DIV_ROUND_UP(byte_mhz, esc_mhz);
740 * TODO: Ideally, we shouldn't know what sort of divider
741 * is available in mmss_cc, we're just assuming that
742 * it'll always be a 4 bit divider. Need to come up with
745 if (esc_div >= 1 && esc_div <= 16)
752 msm_host->esc_clk_rate = msm_host->byte_clk_rate / esc_div;
754 DBG("esc=%d, src=%d", msm_host->esc_clk_rate,
755 msm_host->src_clk_rate);
760 static void dsi_intr_ctrl(struct msm_dsi_host *msm_host, u32 mask, int enable)
765 spin_lock_irqsave(&msm_host->intr_lock, flags);
766 intr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
773 DBG("intr=%x enable=%d", intr, enable);
775 dsi_write(msm_host, REG_DSI_INTR_CTRL, intr);
776 spin_unlock_irqrestore(&msm_host->intr_lock, flags);
779 static inline enum dsi_traffic_mode dsi_get_traffic_mode(const u32 mode_flags)
781 if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
783 else if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
784 return NON_BURST_SYNCH_PULSE;
786 return NON_BURST_SYNCH_EVENT;
789 static inline enum dsi_vid_dst_format dsi_get_vid_fmt(
790 const enum mipi_dsi_pixel_format mipi_fmt)
793 case MIPI_DSI_FMT_RGB888: return VID_DST_FORMAT_RGB888;
794 case MIPI_DSI_FMT_RGB666: return VID_DST_FORMAT_RGB666_LOOSE;
795 case MIPI_DSI_FMT_RGB666_PACKED: return VID_DST_FORMAT_RGB666;
796 case MIPI_DSI_FMT_RGB565: return VID_DST_FORMAT_RGB565;
797 default: return VID_DST_FORMAT_RGB888;
801 static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt(
802 const enum mipi_dsi_pixel_format mipi_fmt)
805 case MIPI_DSI_FMT_RGB888: return CMD_DST_FORMAT_RGB888;
806 case MIPI_DSI_FMT_RGB666_PACKED:
807 case MIPI_DSI_FMT_RGB666: return CMD_DST_FORMAT_RGB666;
808 case MIPI_DSI_FMT_RGB565: return CMD_DST_FORMAT_RGB565;
809 default: return CMD_DST_FORMAT_RGB888;
813 static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
814 struct msm_dsi_phy_shared_timings *phy_shared_timings)
816 u32 flags = msm_host->mode_flags;
817 enum mipi_dsi_pixel_format mipi_fmt = msm_host->format;
818 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
822 dsi_write(msm_host, REG_DSI_CTRL, 0);
826 if (flags & MIPI_DSI_MODE_VIDEO) {
827 if (flags & MIPI_DSI_MODE_VIDEO_HSE)
828 data |= DSI_VID_CFG0_PULSE_MODE_HSA_HE;
829 if (flags & MIPI_DSI_MODE_VIDEO_HFP)
830 data |= DSI_VID_CFG0_HFP_POWER_STOP;
831 if (flags & MIPI_DSI_MODE_VIDEO_HBP)
832 data |= DSI_VID_CFG0_HBP_POWER_STOP;
833 if (flags & MIPI_DSI_MODE_VIDEO_HSA)
834 data |= DSI_VID_CFG0_HSA_POWER_STOP;
835 /* Always set low power stop mode for BLLP
836 * to let command engine send packets
838 data |= DSI_VID_CFG0_EOF_BLLP_POWER_STOP |
839 DSI_VID_CFG0_BLLP_POWER_STOP;
840 data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags));
841 data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt));
842 data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel);
843 dsi_write(msm_host, REG_DSI_VID_CFG0, data);
845 /* Do not swap RGB colors */
846 data = DSI_VID_CFG1_RGB_SWAP(SWAP_RGB);
847 dsi_write(msm_host, REG_DSI_VID_CFG1, 0);
849 /* Do not swap RGB colors */
850 data = DSI_CMD_CFG0_RGB_SWAP(SWAP_RGB);
851 data |= DSI_CMD_CFG0_DST_FORMAT(dsi_get_cmd_fmt(mipi_fmt));
852 dsi_write(msm_host, REG_DSI_CMD_CFG0, data);
854 data = DSI_CMD_CFG1_WR_MEM_START(MIPI_DCS_WRITE_MEMORY_START) |
855 DSI_CMD_CFG1_WR_MEM_CONTINUE(
856 MIPI_DCS_WRITE_MEMORY_CONTINUE);
857 /* Always insert DCS command */
858 data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND;
859 dsi_write(msm_host, REG_DSI_CMD_CFG1, data);
862 dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL,
863 DSI_CMD_DMA_CTRL_FROM_FRAME_BUFFER |
864 DSI_CMD_DMA_CTRL_LOW_POWER);
867 /* Always assume dedicated TE pin */
868 data |= DSI_TRIG_CTRL_TE;
869 data |= DSI_TRIG_CTRL_MDP_TRIGGER(TRIGGER_NONE);
870 data |= DSI_TRIG_CTRL_DMA_TRIGGER(TRIGGER_SW);
871 data |= DSI_TRIG_CTRL_STREAM(msm_host->channel);
872 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
873 (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_2))
874 data |= DSI_TRIG_CTRL_BLOCK_DMA_WITHIN_FRAME;
875 dsi_write(msm_host, REG_DSI_TRIG_CTRL, data);
877 data = DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(phy_shared_timings->clk_post) |
878 DSI_CLKOUT_TIMING_CTRL_T_CLK_PRE(phy_shared_timings->clk_pre);
879 dsi_write(msm_host, REG_DSI_CLKOUT_TIMING_CTRL, data);
881 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
882 (cfg_hnd->minor > MSM_DSI_6G_VER_MINOR_V1_0) &&
883 phy_shared_timings->clk_pre_inc_by_2)
884 dsi_write(msm_host, REG_DSI_T_CLK_PRE_EXTEND,
885 DSI_T_CLK_PRE_EXTEND_INC_BY_2_BYTECLK);
888 if (!(flags & MIPI_DSI_MODE_EOT_PACKET))
889 data |= DSI_EOT_PACKET_CTRL_TX_EOT_APPEND;
890 dsi_write(msm_host, REG_DSI_EOT_PACKET_CTRL, data);
892 /* allow only ack-err-status to generate interrupt */
893 dsi_write(msm_host, REG_DSI_ERR_INT_MASK0, 0x13ff3fe0);
895 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1);
897 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
899 data = DSI_CTRL_CLK_EN;
901 DBG("lane number=%d", msm_host->lanes);
902 data |= ((DSI_CTRL_LANE0 << msm_host->lanes) - DSI_CTRL_LANE0);
904 dsi_write(msm_host, REG_DSI_LANE_SWAP_CTRL,
905 DSI_LANE_SWAP_CTRL_DLN_SWAP_SEL(msm_host->dlane_swap));
907 if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS))
908 dsi_write(msm_host, REG_DSI_LANE_CTRL,
909 DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST);
911 data |= DSI_CTRL_ENABLE;
913 dsi_write(msm_host, REG_DSI_CTRL, data);
916 static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_dual_dsi)
918 struct drm_display_mode *mode = msm_host->mode;
919 u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */
920 u32 h_total = mode->htotal;
921 u32 v_total = mode->vtotal;
922 u32 hs_end = mode->hsync_end - mode->hsync_start;
923 u32 vs_end = mode->vsync_end - mode->vsync_start;
924 u32 ha_start = h_total - mode->hsync_start;
925 u32 ha_end = ha_start + mode->hdisplay;
926 u32 va_start = v_total - mode->vsync_start;
927 u32 va_end = va_start + mode->vdisplay;
928 u32 hdisplay = mode->hdisplay;
934 * For dual DSI mode, the current DRM mode has
935 * the complete width of the panel. Since, the complete
936 * panel is driven by two DSI controllers, the horizontal
937 * timings have to be split between the two dsi controllers.
938 * Adjust the DSI host timing values accordingly.
948 if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) {
949 dsi_write(msm_host, REG_DSI_ACTIVE_H,
950 DSI_ACTIVE_H_START(ha_start) |
951 DSI_ACTIVE_H_END(ha_end));
952 dsi_write(msm_host, REG_DSI_ACTIVE_V,
953 DSI_ACTIVE_V_START(va_start) |
954 DSI_ACTIVE_V_END(va_end));
955 dsi_write(msm_host, REG_DSI_TOTAL,
956 DSI_TOTAL_H_TOTAL(h_total - 1) |
957 DSI_TOTAL_V_TOTAL(v_total - 1));
959 dsi_write(msm_host, REG_DSI_ACTIVE_HSYNC,
960 DSI_ACTIVE_HSYNC_START(hs_start) |
961 DSI_ACTIVE_HSYNC_END(hs_end));
962 dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_HPOS, 0);
963 dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_VPOS,
964 DSI_ACTIVE_VSYNC_VPOS_START(vs_start) |
965 DSI_ACTIVE_VSYNC_VPOS_END(vs_end));
966 } else { /* command mode */
967 /* image data and 1 byte write_memory_start cmd */
968 wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1;
970 dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_CTRL,
971 DSI_CMD_MDP_STREAM_CTRL_WORD_COUNT(wc) |
972 DSI_CMD_MDP_STREAM_CTRL_VIRTUAL_CHANNEL(
974 DSI_CMD_MDP_STREAM_CTRL_DATA_TYPE(
975 MIPI_DSI_DCS_LONG_WRITE));
977 dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_TOTAL,
978 DSI_CMD_MDP_STREAM_TOTAL_H_TOTAL(hdisplay) |
979 DSI_CMD_MDP_STREAM_TOTAL_V_TOTAL(mode->vdisplay));
983 static void dsi_sw_reset(struct msm_dsi_host *msm_host)
985 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
986 wmb(); /* clocks need to be enabled before reset */
988 dsi_write(msm_host, REG_DSI_RESET, 1);
989 wmb(); /* make sure reset happen */
990 dsi_write(msm_host, REG_DSI_RESET, 0);
993 static void dsi_op_mode_config(struct msm_dsi_host *msm_host,
994 bool video_mode, bool enable)
998 dsi_ctrl = dsi_read(msm_host, REG_DSI_CTRL);
1001 dsi_ctrl &= ~(DSI_CTRL_ENABLE | DSI_CTRL_VID_MODE_EN |
1002 DSI_CTRL_CMD_MODE_EN);
1003 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE |
1004 DSI_IRQ_MASK_VIDEO_DONE, 0);
1007 dsi_ctrl |= DSI_CTRL_VID_MODE_EN;
1008 } else { /* command mode */
1009 dsi_ctrl |= DSI_CTRL_CMD_MODE_EN;
1010 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE, 1);
1012 dsi_ctrl |= DSI_CTRL_ENABLE;
1015 dsi_write(msm_host, REG_DSI_CTRL, dsi_ctrl);
1018 static void dsi_set_tx_power_mode(int mode, struct msm_dsi_host *msm_host)
1022 data = dsi_read(msm_host, REG_DSI_CMD_DMA_CTRL);
1025 data &= ~DSI_CMD_DMA_CTRL_LOW_POWER;
1027 data |= DSI_CMD_DMA_CTRL_LOW_POWER;
1029 dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, data);
1032 static void dsi_wait4video_done(struct msm_dsi_host *msm_host)
1035 struct device *dev = &msm_host->pdev->dev;
1037 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 1);
1039 reinit_completion(&msm_host->video_comp);
1041 ret = wait_for_completion_timeout(&msm_host->video_comp,
1042 msecs_to_jiffies(70));
1045 DRM_DEV_ERROR(dev, "wait for video done timed out\n");
1047 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0);
1050 static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host)
1052 if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO))
1055 if (msm_host->power_on && msm_host->enabled) {
1056 dsi_wait4video_done(msm_host);
1057 /* delay 4 ms to skip BLLP */
1058 usleep_range(2000, 4000);
1062 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size)
1064 struct drm_device *dev = msm_host->dev;
1065 struct msm_drm_private *priv = dev->dev_private;
1069 data = msm_gem_kernel_new(dev, size, MSM_BO_UNCACHED,
1071 &msm_host->tx_gem_obj, &iova);
1074 msm_host->tx_gem_obj = NULL;
1075 return PTR_ERR(data);
1078 msm_gem_object_set_name(msm_host->tx_gem_obj, "tx_gem");
1080 msm_host->tx_size = msm_host->tx_gem_obj->size;
1085 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size)
1087 struct drm_device *dev = msm_host->dev;
1089 msm_host->tx_buf = dma_alloc_coherent(dev->dev, size,
1090 &msm_host->tx_buf_paddr, GFP_KERNEL);
1091 if (!msm_host->tx_buf)
1094 msm_host->tx_size = size;
1099 static void dsi_tx_buf_free(struct msm_dsi_host *msm_host)
1101 struct drm_device *dev = msm_host->dev;
1102 struct msm_drm_private *priv;
1105 * This is possible if we're tearing down before we've had a chance to
1106 * fully initialize. A very real possibility if our probe is deferred,
1107 * in which case we'll hit msm_dsi_host_destroy() without having run
1108 * through the dsi_tx_buf_alloc().
1113 priv = dev->dev_private;
1114 if (msm_host->tx_gem_obj) {
1115 msm_gem_unpin_iova(msm_host->tx_gem_obj, priv->kms->aspace);
1116 drm_gem_object_put_unlocked(msm_host->tx_gem_obj);
1117 msm_host->tx_gem_obj = NULL;
1120 if (msm_host->tx_buf)
1121 dma_free_coherent(dev->dev, msm_host->tx_size, msm_host->tx_buf,
1122 msm_host->tx_buf_paddr);
1125 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host)
1127 return msm_gem_get_vaddr(msm_host->tx_gem_obj);
1130 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host)
1132 return msm_host->tx_buf;
1135 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host)
1137 msm_gem_put_vaddr(msm_host->tx_gem_obj);
1141 * prepare cmd buffer to be txed
1143 static int dsi_cmd_dma_add(struct msm_dsi_host *msm_host,
1144 const struct mipi_dsi_msg *msg)
1146 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1147 struct mipi_dsi_packet packet;
1152 ret = mipi_dsi_create_packet(&packet, msg);
1154 pr_err("%s: create packet failed, %d\n", __func__, ret);
1157 len = (packet.size + 3) & (~0x3);
1159 if (len > msm_host->tx_size) {
1160 pr_err("%s: packet size is too big\n", __func__);
1164 data = cfg_hnd->ops->tx_buf_get(msm_host);
1166 ret = PTR_ERR(data);
1167 pr_err("%s: get vaddr failed, %d\n", __func__, ret);
1171 /* MSM specific command format in memory */
1172 data[0] = packet.header[1];
1173 data[1] = packet.header[2];
1174 data[2] = packet.header[0];
1175 data[3] = BIT(7); /* Last packet */
1176 if (mipi_dsi_packet_format_is_long(msg->type))
1178 if (msg->rx_buf && msg->rx_len)
1182 if (packet.payload && packet.payload_length)
1183 memcpy(data + 4, packet.payload, packet.payload_length);
1185 /* Append 0xff to the end */
1186 if (packet.size < len)
1187 memset(data + packet.size, 0xff, len - packet.size);
1189 if (cfg_hnd->ops->tx_buf_put)
1190 cfg_hnd->ops->tx_buf_put(msm_host);
1196 * dsi_short_read1_resp: 1 parameter
1198 static int dsi_short_read1_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1200 u8 *data = msg->rx_buf;
1201 if (data && (msg->rx_len >= 1)) {
1202 *data = buf[1]; /* strip out dcs type */
1205 pr_err("%s: read data does not match with rx_buf len %zu\n",
1206 __func__, msg->rx_len);
1212 * dsi_short_read2_resp: 2 parameter
1214 static int dsi_short_read2_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1216 u8 *data = msg->rx_buf;
1217 if (data && (msg->rx_len >= 2)) {
1218 data[0] = buf[1]; /* strip out dcs type */
1222 pr_err("%s: read data does not match with rx_buf len %zu\n",
1223 __func__, msg->rx_len);
1228 static int dsi_long_read_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1230 /* strip out 4 byte dcs header */
1231 if (msg->rx_buf && msg->rx_len)
1232 memcpy(msg->rx_buf, buf + 4, msg->rx_len);
1237 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *dma_base)
1239 struct drm_device *dev = msm_host->dev;
1240 struct msm_drm_private *priv = dev->dev_private;
1245 return msm_gem_get_and_pin_iova(msm_host->tx_gem_obj,
1246 priv->kms->aspace, dma_base);
1249 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *dma_base)
1254 *dma_base = msm_host->tx_buf_paddr;
1258 static int dsi_cmd_dma_tx(struct msm_dsi_host *msm_host, int len)
1260 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1265 ret = cfg_hnd->ops->dma_base_get(msm_host, &dma_base);
1267 pr_err("%s: failed to get iova: %d\n", __func__, ret);
1271 reinit_completion(&msm_host->dma_comp);
1273 dsi_wait4video_eng_busy(msm_host);
1275 triggered = msm_dsi_manager_cmd_xfer_trigger(
1276 msm_host->id, dma_base, len);
1278 ret = wait_for_completion_timeout(&msm_host->dma_comp,
1279 msecs_to_jiffies(200));
1291 static int dsi_cmd_dma_rx(struct msm_dsi_host *msm_host,
1292 u8 *buf, int rx_byte, int pkt_size)
1294 u32 *lp, *temp, data;
1298 int repeated_bytes = 0;
1299 int buf_offset = buf - msm_host->rx_buf;
1303 cnt = (rx_byte + 3) >> 2;
1305 cnt = 4; /* 4 x 32 bits registers only */
1310 read_cnt = pkt_size + 6;
1313 * In case of multiple reads from the panel, after the first read, there
1314 * is possibility that there are some bytes in the payload repeating in
1315 * the RDBK_DATA registers. Since we read all the parameters from the
1316 * panel right from the first byte for every pass. We need to skip the
1317 * repeating bytes and then append the new parameters to the rx buffer.
1319 if (read_cnt > 16) {
1321 /* Any data more than 16 bytes will be shifted out.
1322 * The temp read buffer should already contain these bytes.
1323 * The remaining bytes in read buffer are the repeated bytes.
1325 bytes_shifted = read_cnt - 16;
1326 repeated_bytes = buf_offset - bytes_shifted;
1329 for (i = cnt - 1; i >= 0; i--) {
1330 data = dsi_read(msm_host, REG_DSI_RDBK_DATA(i));
1331 *temp++ = ntohl(data); /* to host byte order */
1332 DBG("data = 0x%x and ntohl(data) = 0x%x", data, ntohl(data));
1335 for (i = repeated_bytes; i < 16; i++)
1341 static int dsi_cmds2buf_tx(struct msm_dsi_host *msm_host,
1342 const struct mipi_dsi_msg *msg)
1345 int bllp_len = msm_host->mode->hdisplay *
1346 dsi_get_bpp(msm_host->format) / 8;
1348 len = dsi_cmd_dma_add(msm_host, msg);
1350 pr_err("%s: failed to add cmd type = 0x%x\n",
1351 __func__, msg->type);
1355 /* for video mode, do not send cmds more than
1356 * one pixel line, since it only transmit it
1359 /* TODO: if the command is sent in LP mode, the bit rate is only
1360 * half of esc clk rate. In this case, if the video is already
1361 * actively streaming, we need to check more carefully if the
1362 * command can be fit into one BLLP.
1364 if ((msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) && (len > bllp_len)) {
1365 pr_err("%s: cmd cannot fit into BLLP period, len=%d\n",
1370 ret = dsi_cmd_dma_tx(msm_host, len);
1372 pr_err("%s: cmd dma tx failed, type=0x%x, data0=0x%x, len=%d\n",
1373 __func__, msg->type, (*(u8 *)(msg->tx_buf)), len);
1380 static void dsi_sw_reset_restore(struct msm_dsi_host *msm_host)
1384 data0 = dsi_read(msm_host, REG_DSI_CTRL);
1386 data1 &= ~DSI_CTRL_ENABLE;
1387 dsi_write(msm_host, REG_DSI_CTRL, data1);
1389 * dsi controller need to be disabled before
1394 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
1395 wmb(); /* make sure clocks enabled */
1397 /* dsi controller can only be reset while clocks are running */
1398 dsi_write(msm_host, REG_DSI_RESET, 1);
1399 wmb(); /* make sure reset happen */
1400 dsi_write(msm_host, REG_DSI_RESET, 0);
1401 wmb(); /* controller out of reset */
1402 dsi_write(msm_host, REG_DSI_CTRL, data0);
1403 wmb(); /* make sure dsi controller enabled again */
1406 static void dsi_hpd_worker(struct work_struct *work)
1408 struct msm_dsi_host *msm_host =
1409 container_of(work, struct msm_dsi_host, hpd_work);
1411 drm_helper_hpd_irq_event(msm_host->dev);
1414 static void dsi_err_worker(struct work_struct *work)
1416 struct msm_dsi_host *msm_host =
1417 container_of(work, struct msm_dsi_host, err_work);
1418 u32 status = msm_host->err_work_state;
1420 pr_err_ratelimited("%s: status=%x\n", __func__, status);
1421 if (status & DSI_ERR_STATE_MDP_FIFO_UNDERFLOW)
1422 dsi_sw_reset_restore(msm_host);
1424 /* It is safe to clear here because error irq is disabled. */
1425 msm_host->err_work_state = 0;
1427 /* enable dsi error interrupt */
1428 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1);
1431 static void dsi_ack_err_status(struct msm_dsi_host *msm_host)
1435 status = dsi_read(msm_host, REG_DSI_ACK_ERR_STATUS);
1438 dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, status);
1439 /* Writing of an extra 0 needed to clear error bits */
1440 dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, 0);
1441 msm_host->err_work_state |= DSI_ERR_STATE_ACK;
1445 static void dsi_timeout_status(struct msm_dsi_host *msm_host)
1449 status = dsi_read(msm_host, REG_DSI_TIMEOUT_STATUS);
1452 dsi_write(msm_host, REG_DSI_TIMEOUT_STATUS, status);
1453 msm_host->err_work_state |= DSI_ERR_STATE_TIMEOUT;
1457 static void dsi_dln0_phy_err(struct msm_dsi_host *msm_host)
1461 status = dsi_read(msm_host, REG_DSI_DLN0_PHY_ERR);
1463 if (status & (DSI_DLN0_PHY_ERR_DLN0_ERR_ESC |
1464 DSI_DLN0_PHY_ERR_DLN0_ERR_SYNC_ESC |
1465 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTROL |
1466 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP0 |
1467 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP1)) {
1468 dsi_write(msm_host, REG_DSI_DLN0_PHY_ERR, status);
1469 msm_host->err_work_state |= DSI_ERR_STATE_DLN0_PHY;
1473 static void dsi_fifo_status(struct msm_dsi_host *msm_host)
1477 status = dsi_read(msm_host, REG_DSI_FIFO_STATUS);
1479 /* fifo underflow, overflow */
1481 dsi_write(msm_host, REG_DSI_FIFO_STATUS, status);
1482 msm_host->err_work_state |= DSI_ERR_STATE_FIFO;
1483 if (status & DSI_FIFO_STATUS_CMD_MDP_FIFO_UNDERFLOW)
1484 msm_host->err_work_state |=
1485 DSI_ERR_STATE_MDP_FIFO_UNDERFLOW;
1489 static void dsi_status(struct msm_dsi_host *msm_host)
1493 status = dsi_read(msm_host, REG_DSI_STATUS0);
1495 if (status & DSI_STATUS0_INTERLEAVE_OP_CONTENTION) {
1496 dsi_write(msm_host, REG_DSI_STATUS0, status);
1497 msm_host->err_work_state |=
1498 DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION;
1502 static void dsi_clk_status(struct msm_dsi_host *msm_host)
1506 status = dsi_read(msm_host, REG_DSI_CLK_STATUS);
1508 if (status & DSI_CLK_STATUS_PLL_UNLOCKED) {
1509 dsi_write(msm_host, REG_DSI_CLK_STATUS, status);
1510 msm_host->err_work_state |= DSI_ERR_STATE_PLL_UNLOCKED;
1514 static void dsi_error(struct msm_dsi_host *msm_host)
1516 /* disable dsi error interrupt */
1517 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 0);
1519 dsi_clk_status(msm_host);
1520 dsi_fifo_status(msm_host);
1521 dsi_ack_err_status(msm_host);
1522 dsi_timeout_status(msm_host);
1523 dsi_status(msm_host);
1524 dsi_dln0_phy_err(msm_host);
1526 queue_work(msm_host->workqueue, &msm_host->err_work);
1529 static irqreturn_t dsi_host_irq(int irq, void *ptr)
1531 struct msm_dsi_host *msm_host = ptr;
1533 unsigned long flags;
1535 if (!msm_host->ctrl_base)
1538 spin_lock_irqsave(&msm_host->intr_lock, flags);
1539 isr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
1540 dsi_write(msm_host, REG_DSI_INTR_CTRL, isr);
1541 spin_unlock_irqrestore(&msm_host->intr_lock, flags);
1543 DBG("isr=0x%x, id=%d", isr, msm_host->id);
1545 if (isr & DSI_IRQ_ERROR)
1546 dsi_error(msm_host);
1548 if (isr & DSI_IRQ_VIDEO_DONE)
1549 complete(&msm_host->video_comp);
1551 if (isr & DSI_IRQ_CMD_DMA_DONE)
1552 complete(&msm_host->dma_comp);
1557 static int dsi_host_init_panel_gpios(struct msm_dsi_host *msm_host,
1558 struct device *panel_device)
1560 msm_host->disp_en_gpio = devm_gpiod_get_optional(panel_device,
1563 if (IS_ERR(msm_host->disp_en_gpio)) {
1564 DBG("cannot get disp-enable-gpios %ld",
1565 PTR_ERR(msm_host->disp_en_gpio));
1566 return PTR_ERR(msm_host->disp_en_gpio);
1569 msm_host->te_gpio = devm_gpiod_get_optional(panel_device, "disp-te",
1571 if (IS_ERR(msm_host->te_gpio)) {
1572 DBG("cannot get disp-te-gpios %ld", PTR_ERR(msm_host->te_gpio));
1573 return PTR_ERR(msm_host->te_gpio);
1579 static int dsi_host_attach(struct mipi_dsi_host *host,
1580 struct mipi_dsi_device *dsi)
1582 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1585 if (dsi->lanes > msm_host->num_data_lanes)
1588 msm_host->channel = dsi->channel;
1589 msm_host->lanes = dsi->lanes;
1590 msm_host->format = dsi->format;
1591 msm_host->mode_flags = dsi->mode_flags;
1593 /* Some gpios defined in panel DT need to be controlled by host */
1594 ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev);
1598 DBG("id=%d", msm_host->id);
1600 queue_work(msm_host->workqueue, &msm_host->hpd_work);
1605 static int dsi_host_detach(struct mipi_dsi_host *host,
1606 struct mipi_dsi_device *dsi)
1608 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1610 msm_host->device_node = NULL;
1612 DBG("id=%d", msm_host->id);
1614 queue_work(msm_host->workqueue, &msm_host->hpd_work);
1619 static ssize_t dsi_host_transfer(struct mipi_dsi_host *host,
1620 const struct mipi_dsi_msg *msg)
1622 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1625 if (!msg || !msm_host->power_on)
1628 mutex_lock(&msm_host->cmd_mutex);
1629 ret = msm_dsi_manager_cmd_xfer(msm_host->id, msg);
1630 mutex_unlock(&msm_host->cmd_mutex);
1635 static struct mipi_dsi_host_ops dsi_host_ops = {
1636 .attach = dsi_host_attach,
1637 .detach = dsi_host_detach,
1638 .transfer = dsi_host_transfer,
1642 * List of supported physical to logical lane mappings.
1643 * For example, the 2nd entry represents the following mapping:
1645 * "3012": Logic 3->Phys 0; Logic 0->Phys 1; Logic 1->Phys 2; Logic 2->Phys 3;
1647 static const int supported_data_lane_swaps[][4] = {
1658 static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host,
1659 struct device_node *ep)
1661 struct device *dev = &msm_host->pdev->dev;
1662 struct property *prop;
1664 int ret, i, len, num_lanes;
1666 prop = of_find_property(ep, "data-lanes", &len);
1669 "failed to find data lane mapping, using default\n");
1673 num_lanes = len / sizeof(u32);
1675 if (num_lanes < 1 || num_lanes > 4) {
1676 DRM_DEV_ERROR(dev, "bad number of data lanes\n");
1680 msm_host->num_data_lanes = num_lanes;
1682 ret = of_property_read_u32_array(ep, "data-lanes", lane_map,
1685 DRM_DEV_ERROR(dev, "failed to read lane data\n");
1690 * compare DT specified physical-logical lane mappings with the ones
1691 * supported by hardware
1693 for (i = 0; i < ARRAY_SIZE(supported_data_lane_swaps); i++) {
1694 const int *swap = supported_data_lane_swaps[i];
1698 * the data-lanes array we get from DT has a logical->physical
1699 * mapping. The "data lane swap" register field represents
1700 * supported configurations in a physical->logical mapping.
1701 * Translate the DT mapping to what we understand and find a
1702 * configuration that works.
1704 for (j = 0; j < num_lanes; j++) {
1705 if (lane_map[j] < 0 || lane_map[j] > 3)
1706 DRM_DEV_ERROR(dev, "bad physical lane entry %u\n",
1709 if (swap[lane_map[j]] != j)
1713 if (j == num_lanes) {
1714 msm_host->dlane_swap = i;
1722 static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
1724 struct device *dev = &msm_host->pdev->dev;
1725 struct device_node *np = dev->of_node;
1726 struct device_node *endpoint, *device_node;
1730 * Get the endpoint of the output port of the DSI host. In our case,
1731 * this is mapped to port number with reg = 1. Don't return an error if
1732 * the remote endpoint isn't defined. It's possible that there is
1733 * nothing connected to the dsi output.
1735 endpoint = of_graph_get_endpoint_by_regs(np, 1, -1);
1737 DRM_DEV_DEBUG(dev, "%s: no endpoint\n", __func__);
1741 ret = dsi_host_parse_lane_data(msm_host, endpoint);
1743 DRM_DEV_ERROR(dev, "%s: invalid lane configuration %d\n",
1749 /* Get panel node from the output port's endpoint data */
1750 device_node = of_graph_get_remote_node(np, 1, 0);
1752 DRM_DEV_DEBUG(dev, "%s: no valid device\n", __func__);
1757 msm_host->device_node = device_node;
1759 if (of_property_read_bool(np, "syscon-sfpb")) {
1760 msm_host->sfpb = syscon_regmap_lookup_by_phandle(np,
1762 if (IS_ERR(msm_host->sfpb)) {
1763 DRM_DEV_ERROR(dev, "%s: failed to get sfpb regmap\n",
1765 ret = PTR_ERR(msm_host->sfpb);
1769 of_node_put(device_node);
1772 of_node_put(endpoint);
1777 static int dsi_host_get_id(struct msm_dsi_host *msm_host)
1779 struct platform_device *pdev = msm_host->pdev;
1780 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
1781 struct resource *res;
1784 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dsi_ctrl");
1788 for (i = 0; i < cfg->num_dsi; i++) {
1789 if (cfg->io_start[i] == res->start)
1796 int msm_dsi_host_init(struct msm_dsi *msm_dsi)
1798 struct msm_dsi_host *msm_host = NULL;
1799 struct platform_device *pdev = msm_dsi->pdev;
1802 msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
1804 pr_err("%s: FAILED: cannot alloc dsi host\n",
1810 msm_host->pdev = pdev;
1811 msm_dsi->host = &msm_host->base;
1813 ret = dsi_host_parse_dt(msm_host);
1815 pr_err("%s: failed to parse dt\n", __func__);
1819 msm_host->ctrl_base = msm_ioremap(pdev, "dsi_ctrl", "DSI CTRL");
1820 if (IS_ERR(msm_host->ctrl_base)) {
1821 pr_err("%s: unable to map Dsi ctrl base\n", __func__);
1822 ret = PTR_ERR(msm_host->ctrl_base);
1826 pm_runtime_enable(&pdev->dev);
1828 msm_host->cfg_hnd = dsi_get_config(msm_host);
1829 if (!msm_host->cfg_hnd) {
1831 pr_err("%s: get config failed\n", __func__);
1835 msm_host->id = dsi_host_get_id(msm_host);
1836 if (msm_host->id < 0) {
1838 pr_err("%s: unable to identify DSI host index\n", __func__);
1842 /* fixup base address by io offset */
1843 msm_host->ctrl_base += msm_host->cfg_hnd->cfg->io_offset;
1845 ret = dsi_regulator_init(msm_host);
1847 pr_err("%s: regulator init failed\n", __func__);
1851 ret = dsi_clk_init(msm_host);
1853 pr_err("%s: unable to initialize dsi clks\n", __func__);
1857 msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL);
1858 if (!msm_host->rx_buf) {
1860 pr_err("%s: alloc rx temp buf failed\n", __func__);
1864 init_completion(&msm_host->dma_comp);
1865 init_completion(&msm_host->video_comp);
1866 mutex_init(&msm_host->dev_mutex);
1867 mutex_init(&msm_host->cmd_mutex);
1868 spin_lock_init(&msm_host->intr_lock);
1870 /* setup workqueue */
1871 msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0);
1872 INIT_WORK(&msm_host->err_work, dsi_err_worker);
1873 INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker);
1875 msm_dsi->id = msm_host->id;
1877 DBG("Dsi Host %d initialized", msm_host->id);
1884 void msm_dsi_host_destroy(struct mipi_dsi_host *host)
1886 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1889 dsi_tx_buf_free(msm_host);
1890 if (msm_host->workqueue) {
1891 flush_workqueue(msm_host->workqueue);
1892 destroy_workqueue(msm_host->workqueue);
1893 msm_host->workqueue = NULL;
1896 mutex_destroy(&msm_host->cmd_mutex);
1897 mutex_destroy(&msm_host->dev_mutex);
1899 pm_runtime_disable(&msm_host->pdev->dev);
1902 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
1903 struct drm_device *dev)
1905 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1906 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1907 struct platform_device *pdev = msm_host->pdev;
1910 msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
1911 if (msm_host->irq < 0) {
1912 ret = msm_host->irq;
1913 DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
1917 ret = devm_request_irq(&pdev->dev, msm_host->irq,
1918 dsi_host_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
1919 "dsi_isr", msm_host);
1921 DRM_DEV_ERROR(&pdev->dev, "failed to request IRQ%u: %d\n",
1922 msm_host->irq, ret);
1926 msm_host->dev = dev;
1927 ret = cfg_hnd->ops->tx_buf_alloc(msm_host, SZ_4K);
1929 pr_err("%s: alloc tx gem obj failed, %d\n", __func__, ret);
1936 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer)
1938 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1941 /* Register mipi dsi host */
1942 if (!msm_host->registered) {
1943 host->dev = &msm_host->pdev->dev;
1944 host->ops = &dsi_host_ops;
1945 ret = mipi_dsi_host_register(host);
1949 msm_host->registered = true;
1951 /* If the panel driver has not been probed after host register,
1952 * we should defer the host's probe.
1953 * It makes sure panel is connected when fbcon detects
1954 * connector status and gets the proper display mode to
1955 * create framebuffer.
1956 * Don't try to defer if there is nothing connected to the dsi
1959 if (check_defer && msm_host->device_node) {
1960 if (IS_ERR(of_drm_find_panel(msm_host->device_node)))
1961 if (!of_drm_find_bridge(msm_host->device_node))
1962 return -EPROBE_DEFER;
1969 void msm_dsi_host_unregister(struct mipi_dsi_host *host)
1971 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1973 if (msm_host->registered) {
1974 mipi_dsi_host_unregister(host);
1977 msm_host->registered = false;
1981 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
1982 const struct mipi_dsi_msg *msg)
1984 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1985 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1987 /* TODO: make sure dsi_cmd_mdp is idle.
1988 * Since DSI6G v1.2.0, we can set DSI_TRIG_CTRL.BLOCK_DMA_WITHIN_FRAME
1989 * to ask H/W to wait until cmd mdp is idle. S/W wait is not needed.
1990 * How to handle the old versions? Wait for mdp cmd done?
1994 * mdss interrupt is generated in mdp core clock domain
1995 * mdp clock need to be enabled to receive dsi interrupt
1997 pm_runtime_get_sync(&msm_host->pdev->dev);
1998 cfg_hnd->ops->link_clk_enable(msm_host);
2000 /* TODO: vote for bus bandwidth */
2002 if (!(msg->flags & MIPI_DSI_MSG_USE_LPM))
2003 dsi_set_tx_power_mode(0, msm_host);
2005 msm_host->dma_cmd_ctrl_restore = dsi_read(msm_host, REG_DSI_CTRL);
2006 dsi_write(msm_host, REG_DSI_CTRL,
2007 msm_host->dma_cmd_ctrl_restore |
2008 DSI_CTRL_CMD_MODE_EN |
2010 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 1);
2015 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
2016 const struct mipi_dsi_msg *msg)
2018 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2019 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2021 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 0);
2022 dsi_write(msm_host, REG_DSI_CTRL, msm_host->dma_cmd_ctrl_restore);
2024 if (!(msg->flags & MIPI_DSI_MSG_USE_LPM))
2025 dsi_set_tx_power_mode(1, msm_host);
2027 /* TODO: unvote for bus bandwidth */
2029 cfg_hnd->ops->link_clk_disable(msm_host);
2030 pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2033 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
2034 const struct mipi_dsi_msg *msg)
2036 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2038 return dsi_cmds2buf_tx(msm_host, msg);
2041 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
2042 const struct mipi_dsi_msg *msg)
2044 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2045 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2046 int data_byte, rx_byte, dlen, end;
2047 int short_response, diff, pkt_size, ret = 0;
2049 int rlen = msg->rx_len;
2058 data_byte = 10; /* first read */
2059 if (rlen < data_byte)
2062 pkt_size = data_byte;
2063 rx_byte = data_byte + 6; /* 4 header + 2 crc */
2066 buf = msm_host->rx_buf;
2069 u8 tx[2] = {pkt_size & 0xff, pkt_size >> 8};
2070 struct mipi_dsi_msg max_pkt_size_msg = {
2071 .channel = msg->channel,
2072 .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
2077 DBG("rlen=%d pkt_size=%d rx_byte=%d",
2078 rlen, pkt_size, rx_byte);
2080 ret = dsi_cmds2buf_tx(msm_host, &max_pkt_size_msg);
2082 pr_err("%s: Set max pkt size failed, %d\n",
2087 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
2088 (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_1)) {
2089 /* Clear the RDBK_DATA registers */
2090 dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL,
2091 DSI_RDBK_DATA_CTRL_CLR);
2092 wmb(); /* make sure the RDBK registers are cleared */
2093 dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, 0);
2094 wmb(); /* release cleared status before transfer */
2097 ret = dsi_cmds2buf_tx(msm_host, msg);
2098 if (ret < msg->tx_len) {
2099 pr_err("%s: Read cmd Tx failed, %d\n", __func__, ret);
2104 * once cmd_dma_done interrupt received,
2105 * return data from client is ready and stored
2106 * at RDBK_DATA register already
2107 * since rx fifo is 16 bytes, dcs header is kept at first loop,
2108 * after that dcs header lost during shift into registers
2110 dlen = dsi_cmd_dma_rx(msm_host, buf, rx_byte, pkt_size);
2118 if (rlen <= data_byte) {
2119 diff = data_byte - rlen;
2127 dlen -= 2; /* 2 crc */
2129 buf += dlen; /* next start position */
2130 data_byte = 14; /* NOT first read */
2131 if (rlen < data_byte)
2134 pkt_size += data_byte;
2135 DBG("buf=%p dlen=%d diff=%d", buf, dlen, diff);
2140 * For single Long read, if the requested rlen < 10,
2141 * we need to shift the start position of rx
2142 * data buffer to skip the bytes which are not
2145 if (pkt_size < 10 && !short_response)
2146 buf = msm_host->rx_buf + (10 - rlen);
2148 buf = msm_host->rx_buf;
2152 case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT:
2153 pr_err("%s: rx ACK_ERR_PACLAGE\n", __func__);
2156 case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE:
2157 case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE:
2158 ret = dsi_short_read1_resp(buf, msg);
2160 case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE:
2161 case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE:
2162 ret = dsi_short_read2_resp(buf, msg);
2164 case MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE:
2165 case MIPI_DSI_RX_DCS_LONG_READ_RESPONSE:
2166 ret = dsi_long_read_resp(buf, msg);
2169 pr_warn("%s:Invalid response cmd\n", __func__);
2176 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, u32 dma_base,
2179 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2181 dsi_write(msm_host, REG_DSI_DMA_BASE, dma_base);
2182 dsi_write(msm_host, REG_DSI_DMA_LEN, len);
2183 dsi_write(msm_host, REG_DSI_TRIG_DMA, 1);
2185 /* Make sure trigger happens */
2189 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
2190 struct msm_dsi_pll *src_pll)
2192 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2193 struct clk *byte_clk_provider, *pixel_clk_provider;
2196 ret = msm_dsi_pll_get_clk_provider(src_pll,
2197 &byte_clk_provider, &pixel_clk_provider);
2199 pr_info("%s: can't get provider from pll, don't set parent\n",
2204 ret = clk_set_parent(msm_host->byte_clk_src, byte_clk_provider);
2206 pr_err("%s: can't set parent to byte_clk_src. ret=%d\n",
2211 ret = clk_set_parent(msm_host->pixel_clk_src, pixel_clk_provider);
2213 pr_err("%s: can't set parent to pixel_clk_src. ret=%d\n",
2218 if (msm_host->dsi_clk_src) {
2219 ret = clk_set_parent(msm_host->dsi_clk_src, pixel_clk_provider);
2221 pr_err("%s: can't set parent to dsi_clk_src. ret=%d\n",
2227 if (msm_host->esc_clk_src) {
2228 ret = clk_set_parent(msm_host->esc_clk_src, byte_clk_provider);
2230 pr_err("%s: can't set parent to esc_clk_src. ret=%d\n",
2240 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host)
2242 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2245 dsi_write(msm_host, REG_DSI_PHY_RESET, DSI_PHY_RESET_RESET);
2246 /* Make sure fully reset */
2249 dsi_write(msm_host, REG_DSI_PHY_RESET, 0);
2253 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
2254 struct msm_dsi_phy_clk_request *clk_req,
2257 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2258 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2261 ret = cfg_hnd->ops->calc_clk_rate(msm_host, is_dual_dsi);
2263 pr_err("%s: unable to calc clk rate, %d\n", __func__, ret);
2267 clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
2268 clk_req->escclk_rate = msm_host->esc_clk_rate;
2271 int msm_dsi_host_enable(struct mipi_dsi_host *host)
2273 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2275 dsi_op_mode_config(msm_host,
2276 !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), true);
2278 /* TODO: clock should be turned off for command mode,
2279 * and only turned on before MDP START.
2280 * This part of code should be enabled once mdp driver support it.
2282 /* if (msm_panel->mode == MSM_DSI_CMD_MODE) {
2283 * dsi_link_clk_disable(msm_host);
2284 * pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2287 msm_host->enabled = true;
2291 int msm_dsi_host_disable(struct mipi_dsi_host *host)
2293 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2295 msm_host->enabled = false;
2296 dsi_op_mode_config(msm_host,
2297 !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), false);
2299 /* Since we have disabled INTF, the video engine won't stop so that
2300 * the cmd engine will be blocked.
2301 * Reset to disable video engine so that we can send off cmd.
2303 dsi_sw_reset(msm_host);
2308 static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable)
2310 enum sfpb_ahb_arb_master_port_en en;
2312 if (!msm_host->sfpb)
2315 en = enable ? SFPB_MASTER_PORT_ENABLE : SFPB_MASTER_PORT_DISABLE;
2317 regmap_update_bits(msm_host->sfpb, REG_SFPB_GPREG,
2318 SFPB_GPREG_MASTER_PORT_EN__MASK,
2319 SFPB_GPREG_MASTER_PORT_EN(en));
2322 int msm_dsi_host_power_on(struct mipi_dsi_host *host,
2323 struct msm_dsi_phy_shared_timings *phy_shared_timings,
2326 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2327 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2330 mutex_lock(&msm_host->dev_mutex);
2331 if (msm_host->power_on) {
2332 DBG("dsi host already on");
2336 msm_dsi_sfpb_config(msm_host, true);
2338 ret = dsi_host_regulator_enable(msm_host);
2340 pr_err("%s:Failed to enable vregs.ret=%d\n",
2345 pm_runtime_get_sync(&msm_host->pdev->dev);
2346 ret = cfg_hnd->ops->link_clk_enable(msm_host);
2348 pr_err("%s: failed to enable link clocks. ret=%d\n",
2350 goto fail_disable_reg;
2353 ret = pinctrl_pm_select_default_state(&msm_host->pdev->dev);
2355 pr_err("%s: failed to set pinctrl default state, %d\n",
2357 goto fail_disable_clk;
2360 dsi_timing_setup(msm_host, is_dual_dsi);
2361 dsi_sw_reset(msm_host);
2362 dsi_ctrl_config(msm_host, true, phy_shared_timings);
2364 if (msm_host->disp_en_gpio)
2365 gpiod_set_value(msm_host->disp_en_gpio, 1);
2367 msm_host->power_on = true;
2368 mutex_unlock(&msm_host->dev_mutex);
2373 cfg_hnd->ops->link_clk_disable(msm_host);
2374 pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2376 dsi_host_regulator_disable(msm_host);
2378 mutex_unlock(&msm_host->dev_mutex);
2382 int msm_dsi_host_power_off(struct mipi_dsi_host *host)
2384 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2385 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2387 mutex_lock(&msm_host->dev_mutex);
2388 if (!msm_host->power_on) {
2389 DBG("dsi host already off");
2393 dsi_ctrl_config(msm_host, false, NULL);
2395 if (msm_host->disp_en_gpio)
2396 gpiod_set_value(msm_host->disp_en_gpio, 0);
2398 pinctrl_pm_select_sleep_state(&msm_host->pdev->dev);
2400 cfg_hnd->ops->link_clk_disable(msm_host);
2401 pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2403 dsi_host_regulator_disable(msm_host);
2405 msm_dsi_sfpb_config(msm_host, false);
2409 msm_host->power_on = false;
2412 mutex_unlock(&msm_host->dev_mutex);
2416 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
2417 const struct drm_display_mode *mode)
2419 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2421 if (msm_host->mode) {
2422 drm_mode_destroy(msm_host->dev, msm_host->mode);
2423 msm_host->mode = NULL;
2426 msm_host->mode = drm_mode_duplicate(msm_host->dev, mode);
2427 if (!msm_host->mode) {
2428 pr_err("%s: cannot duplicate mode\n", __func__);
2435 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host)
2437 return of_drm_find_panel(to_msm_dsi_host(host)->device_node);
2440 unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host)
2442 return to_msm_dsi_host(host)->mode_flags;
2445 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host)
2447 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2449 return of_drm_find_bridge(msm_host->device_node);