2 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 and
6 * only version 2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <linux/clk.h>
15 #include <linux/delay.h>
16 #include <linux/err.h>
17 #include <linux/gpio.h>
18 #include <linux/gpio/consumer.h>
19 #include <linux/interrupt.h>
20 #include <linux/of_device.h>
21 #include <linux/of_gpio.h>
22 #include <linux/of_irq.h>
23 #include <linux/pinctrl/consumer.h>
24 #include <linux/of_graph.h>
25 #include <linux/regulator/consumer.h>
26 #include <linux/spinlock.h>
27 #include <linux/mfd/syscon.h>
28 #include <linux/regmap.h>
29 #include <video/mipi_display.h>
37 static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor)
45 * From DSI6G(v3), addition of a 6G_HW_VERSION register at offset 0
46 * makes all other registers 4-byte shifted down.
48 * In order to identify between DSI6G(v3) and beyond, and DSIv2 and
49 * older, we read the DSI_VERSION register without any shift(offset
50 * 0x1f0). In the case of DSIv2, this hast to be a non-zero value. In
51 * the case of DSI6G, this has to be zero (the offset points to a
52 * scratch register which we never touch)
55 ver = msm_readl(base + REG_DSI_VERSION);
57 /* older dsi host, there is no register shift */
58 ver = FIELD(ver, DSI_VERSION_MAJOR);
59 if (ver <= MSM_DSI_VER_MAJOR_V2) {
69 * newer host, offset 0 has 6G_HW_VERSION, the rest of the
70 * registers are shifted down, read DSI_VERSION again with
73 ver = msm_readl(base + DSI_6G_REG_SHIFT + REG_DSI_VERSION);
74 ver = FIELD(ver, DSI_VERSION_MAJOR);
75 if (ver == MSM_DSI_VER_MAJOR_6G) {
78 *minor = msm_readl(base + REG_DSI_6G_HW_VERSION);
86 #define DSI_ERR_STATE_ACK 0x0000
87 #define DSI_ERR_STATE_TIMEOUT 0x0001
88 #define DSI_ERR_STATE_DLN0_PHY 0x0002
89 #define DSI_ERR_STATE_FIFO 0x0004
90 #define DSI_ERR_STATE_MDP_FIFO_UNDERFLOW 0x0008
91 #define DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION 0x0010
92 #define DSI_ERR_STATE_PLL_UNLOCKED 0x0020
94 #define DSI_CLK_CTRL_ENABLE_CLKS \
95 (DSI_CLK_CTRL_AHBS_HCLK_ON | DSI_CLK_CTRL_AHBM_SCLK_ON | \
96 DSI_CLK_CTRL_PCLK_ON | DSI_CLK_CTRL_DSICLK_ON | \
97 DSI_CLK_CTRL_BYTECLK_ON | DSI_CLK_CTRL_ESCCLK_ON | \
98 DSI_CLK_CTRL_FORCE_ON_DYN_AHBM_HCLK)
100 struct msm_dsi_host {
101 struct mipi_dsi_host base;
103 struct platform_device *pdev;
104 struct drm_device *dev;
108 void __iomem *ctrl_base;
109 struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX];
111 struct clk *bus_clks[DSI_BUS_CLK_MAX];
113 struct clk *byte_clk;
115 struct clk *pixel_clk;
116 struct clk *byte_clk_src;
117 struct clk *pixel_clk_src;
118 struct clk *byte_intf_clk;
124 /* DSI v2 specific clocks */
126 struct clk *esc_clk_src;
127 struct clk *dsi_clk_src;
131 struct gpio_desc *disp_en_gpio;
132 struct gpio_desc *te_gpio;
134 const struct msm_dsi_cfg_handler *cfg_hnd;
136 struct completion dma_comp;
137 struct completion video_comp;
138 struct mutex dev_mutex;
139 struct mutex cmd_mutex;
140 spinlock_t intr_lock; /* Protect interrupt ctrl register */
143 struct work_struct err_work;
144 struct work_struct hpd_work;
145 struct workqueue_struct *workqueue;
147 /* DSI 6G TX buffer*/
148 struct drm_gem_object *tx_gem_obj;
150 /* DSI v2 TX buffer */
152 dma_addr_t tx_buf_paddr;
160 struct drm_display_mode *mode;
162 /* connected device info */
163 struct device_node *device_node;
164 unsigned int channel;
166 enum mipi_dsi_pixel_format format;
167 unsigned long mode_flags;
169 /* lane data parsed via DT */
173 u32 dma_cmd_ctrl_restore;
181 static u32 dsi_get_bpp(const enum mipi_dsi_pixel_format fmt)
184 case MIPI_DSI_FMT_RGB565: return 16;
185 case MIPI_DSI_FMT_RGB666_PACKED: return 18;
186 case MIPI_DSI_FMT_RGB666:
187 case MIPI_DSI_FMT_RGB888:
192 static inline u32 dsi_read(struct msm_dsi_host *msm_host, u32 reg)
194 return msm_readl(msm_host->ctrl_base + reg);
196 static inline void dsi_write(struct msm_dsi_host *msm_host, u32 reg, u32 data)
198 msm_writel(data, msm_host->ctrl_base + reg);
201 static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host);
202 static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host);
204 static const struct msm_dsi_cfg_handler *dsi_get_config(
205 struct msm_dsi_host *msm_host)
207 const struct msm_dsi_cfg_handler *cfg_hnd = NULL;
208 struct device *dev = &msm_host->pdev->dev;
209 struct regulator *gdsc_reg;
212 u32 major = 0, minor = 0;
214 gdsc_reg = regulator_get(dev, "gdsc");
215 if (IS_ERR(gdsc_reg)) {
216 pr_err("%s: cannot get gdsc\n", __func__);
220 ahb_clk = msm_clk_get(msm_host->pdev, "iface");
221 if (IS_ERR(ahb_clk)) {
222 pr_err("%s: cannot get interface clock\n", __func__);
226 pm_runtime_get_sync(dev);
228 ret = regulator_enable(gdsc_reg);
230 pr_err("%s: unable to enable gdsc\n", __func__);
234 ret = clk_prepare_enable(ahb_clk);
236 pr_err("%s: unable to enable ahb_clk\n", __func__);
240 ret = dsi_get_version(msm_host->ctrl_base, &major, &minor);
242 pr_err("%s: Invalid version\n", __func__);
246 cfg_hnd = msm_dsi_cfg_get(major, minor);
248 DBG("%s: Version %x:%x\n", __func__, major, minor);
251 clk_disable_unprepare(ahb_clk);
253 regulator_disable(gdsc_reg);
254 pm_runtime_put_sync(dev);
256 regulator_put(gdsc_reg);
261 static inline struct msm_dsi_host *to_msm_dsi_host(struct mipi_dsi_host *host)
263 return container_of(host, struct msm_dsi_host, base);
266 static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host)
268 struct regulator_bulk_data *s = msm_host->supplies;
269 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
270 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
274 for (i = num - 1; i >= 0; i--)
275 if (regs[i].disable_load >= 0)
276 regulator_set_load(s[i].consumer,
277 regs[i].disable_load);
279 regulator_bulk_disable(num, s);
282 static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host)
284 struct regulator_bulk_data *s = msm_host->supplies;
285 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
286 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
290 for (i = 0; i < num; i++) {
291 if (regs[i].enable_load >= 0) {
292 ret = regulator_set_load(s[i].consumer,
293 regs[i].enable_load);
295 pr_err("regulator %d set op mode failed, %d\n",
302 ret = regulator_bulk_enable(num, s);
304 pr_err("regulator enable failed, %d\n", ret);
311 for (i--; i >= 0; i--)
312 regulator_set_load(s[i].consumer, regs[i].disable_load);
316 static int dsi_regulator_init(struct msm_dsi_host *msm_host)
318 struct regulator_bulk_data *s = msm_host->supplies;
319 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
320 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
323 for (i = 0; i < num; i++)
324 s[i].supply = regs[i].name;
326 ret = devm_regulator_bulk_get(&msm_host->pdev->dev, num, s);
328 pr_err("%s: failed to init regulator, ret=%d\n",
336 int dsi_clk_init_v2(struct msm_dsi_host *msm_host)
338 struct platform_device *pdev = msm_host->pdev;
341 msm_host->src_clk = msm_clk_get(pdev, "src");
343 if (IS_ERR(msm_host->src_clk)) {
344 ret = PTR_ERR(msm_host->src_clk);
345 pr_err("%s: can't find src clock. ret=%d\n",
347 msm_host->src_clk = NULL;
351 msm_host->esc_clk_src = clk_get_parent(msm_host->esc_clk);
352 if (!msm_host->esc_clk_src) {
354 pr_err("%s: can't get esc clock parent. ret=%d\n",
359 msm_host->dsi_clk_src = clk_get_parent(msm_host->src_clk);
360 if (!msm_host->dsi_clk_src) {
362 pr_err("%s: can't get src clock parent. ret=%d\n",
369 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host)
371 struct platform_device *pdev = msm_host->pdev;
374 msm_host->byte_intf_clk = msm_clk_get(pdev, "byte_intf");
375 if (IS_ERR(msm_host->byte_intf_clk)) {
376 ret = PTR_ERR(msm_host->byte_intf_clk);
377 pr_err("%s: can't find byte_intf clock. ret=%d\n",
384 static int dsi_clk_init(struct msm_dsi_host *msm_host)
386 struct platform_device *pdev = msm_host->pdev;
387 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
388 const struct msm_dsi_config *cfg = cfg_hnd->cfg;
392 for (i = 0; i < cfg->num_bus_clks; i++) {
393 msm_host->bus_clks[i] = msm_clk_get(pdev,
394 cfg->bus_clk_names[i]);
395 if (IS_ERR(msm_host->bus_clks[i])) {
396 ret = PTR_ERR(msm_host->bus_clks[i]);
397 pr_err("%s: Unable to get %s clock, ret = %d\n",
398 __func__, cfg->bus_clk_names[i], ret);
403 /* get link and source clocks */
404 msm_host->byte_clk = msm_clk_get(pdev, "byte");
405 if (IS_ERR(msm_host->byte_clk)) {
406 ret = PTR_ERR(msm_host->byte_clk);
407 pr_err("%s: can't find dsi_byte clock. ret=%d\n",
409 msm_host->byte_clk = NULL;
413 msm_host->pixel_clk = msm_clk_get(pdev, "pixel");
414 if (IS_ERR(msm_host->pixel_clk)) {
415 ret = PTR_ERR(msm_host->pixel_clk);
416 pr_err("%s: can't find dsi_pixel clock. ret=%d\n",
418 msm_host->pixel_clk = NULL;
422 msm_host->esc_clk = msm_clk_get(pdev, "core");
423 if (IS_ERR(msm_host->esc_clk)) {
424 ret = PTR_ERR(msm_host->esc_clk);
425 pr_err("%s: can't find dsi_esc clock. ret=%d\n",
427 msm_host->esc_clk = NULL;
431 msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk);
432 if (!msm_host->byte_clk_src) {
434 pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret);
438 msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk);
439 if (!msm_host->pixel_clk_src) {
441 pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret);
445 if (cfg_hnd->ops->clk_init_ver)
446 ret = cfg_hnd->ops->clk_init_ver(msm_host);
451 static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host)
453 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
456 DBG("id=%d", msm_host->id);
458 for (i = 0; i < cfg->num_bus_clks; i++) {
459 ret = clk_prepare_enable(msm_host->bus_clks[i]);
461 pr_err("%s: failed to enable bus clock %d ret %d\n",
470 clk_disable_unprepare(msm_host->bus_clks[i]);
475 static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host)
477 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
482 for (i = cfg->num_bus_clks - 1; i >= 0; i--)
483 clk_disable_unprepare(msm_host->bus_clks[i]);
486 int msm_dsi_runtime_suspend(struct device *dev)
488 struct platform_device *pdev = to_platform_device(dev);
489 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
490 struct mipi_dsi_host *host = msm_dsi->host;
491 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
493 if (!msm_host->cfg_hnd)
496 dsi_bus_clk_disable(msm_host);
501 int msm_dsi_runtime_resume(struct device *dev)
503 struct platform_device *pdev = to_platform_device(dev);
504 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
505 struct mipi_dsi_host *host = msm_dsi->host;
506 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
508 if (!msm_host->cfg_hnd)
511 return dsi_bus_clk_enable(msm_host);
514 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host)
518 DBG("Set clk rates: pclk=%d, byteclk=%d",
519 msm_host->mode->clock, msm_host->byte_clk_rate);
521 ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate);
523 pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret);
527 ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate);
529 pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret);
533 if (msm_host->byte_intf_clk) {
534 ret = clk_set_rate(msm_host->byte_intf_clk,
535 msm_host->byte_clk_rate / 2);
537 pr_err("%s: Failed to set rate byte intf clk, %d\n",
543 ret = clk_prepare_enable(msm_host->esc_clk);
545 pr_err("%s: Failed to enable dsi esc clk\n", __func__);
549 ret = clk_prepare_enable(msm_host->byte_clk);
551 pr_err("%s: Failed to enable dsi byte clk\n", __func__);
555 ret = clk_prepare_enable(msm_host->pixel_clk);
557 pr_err("%s: Failed to enable dsi pixel clk\n", __func__);
561 if (msm_host->byte_intf_clk) {
562 ret = clk_prepare_enable(msm_host->byte_intf_clk);
564 pr_err("%s: Failed to enable byte intf clk\n",
566 goto byte_intf_clk_err;
573 clk_disable_unprepare(msm_host->pixel_clk);
575 clk_disable_unprepare(msm_host->byte_clk);
577 clk_disable_unprepare(msm_host->esc_clk);
582 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host)
586 DBG("Set clk rates: pclk=%d, byteclk=%d, esc_clk=%d, dsi_src_clk=%d",
587 msm_host->mode->clock, msm_host->byte_clk_rate,
588 msm_host->esc_clk_rate, msm_host->src_clk_rate);
590 ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate);
592 pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret);
596 ret = clk_set_rate(msm_host->esc_clk, msm_host->esc_clk_rate);
598 pr_err("%s: Failed to set rate esc clk, %d\n", __func__, ret);
602 ret = clk_set_rate(msm_host->src_clk, msm_host->src_clk_rate);
604 pr_err("%s: Failed to set rate src clk, %d\n", __func__, ret);
608 ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate);
610 pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret);
614 ret = clk_prepare_enable(msm_host->byte_clk);
616 pr_err("%s: Failed to enable dsi byte clk\n", __func__);
620 ret = clk_prepare_enable(msm_host->esc_clk);
622 pr_err("%s: Failed to enable dsi esc clk\n", __func__);
626 ret = clk_prepare_enable(msm_host->src_clk);
628 pr_err("%s: Failed to enable dsi src clk\n", __func__);
632 ret = clk_prepare_enable(msm_host->pixel_clk);
634 pr_err("%s: Failed to enable dsi pixel clk\n", __func__);
641 clk_disable_unprepare(msm_host->src_clk);
643 clk_disable_unprepare(msm_host->esc_clk);
645 clk_disable_unprepare(msm_host->byte_clk);
650 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host)
652 clk_disable_unprepare(msm_host->esc_clk);
653 clk_disable_unprepare(msm_host->pixel_clk);
654 if (msm_host->byte_intf_clk)
655 clk_disable_unprepare(msm_host->byte_intf_clk);
656 clk_disable_unprepare(msm_host->byte_clk);
659 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host)
661 clk_disable_unprepare(msm_host->pixel_clk);
662 clk_disable_unprepare(msm_host->src_clk);
663 clk_disable_unprepare(msm_host->esc_clk);
664 clk_disable_unprepare(msm_host->byte_clk);
667 static u32 dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_dual_dsi)
669 struct drm_display_mode *mode = msm_host->mode;
672 pclk_rate = mode->clock * 1000;
675 * For dual DSI mode, the current DRM mode has the complete width of the
676 * panel. Since, the complete panel is driven by two DSI controllers,
677 * the clock rates have to be split between the two dsi controllers.
678 * Adjust the byte and pixel clock rates for each dsi host accordingly.
686 static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_dual_dsi)
688 u8 lanes = msm_host->lanes;
689 u32 bpp = dsi_get_bpp(msm_host->format);
690 u32 pclk_rate = dsi_get_pclk_rate(msm_host, is_dual_dsi);
691 u64 pclk_bpp = (u64)pclk_rate * bpp;
694 pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__);
698 do_div(pclk_bpp, (8 * lanes));
700 msm_host->pixel_clk_rate = pclk_rate;
701 msm_host->byte_clk_rate = pclk_bpp;
703 DBG("pclk=%d, bclk=%d", msm_host->pixel_clk_rate,
704 msm_host->byte_clk_rate);
708 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi)
710 if (!msm_host->mode) {
711 pr_err("%s: mode not set\n", __func__);
715 dsi_calc_pclk(msm_host, is_dual_dsi);
716 msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk);
720 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi)
722 u32 bpp = dsi_get_bpp(msm_host->format);
724 unsigned int esc_mhz, esc_div;
725 unsigned long byte_mhz;
727 dsi_calc_pclk(msm_host, is_dual_dsi);
729 pclk_bpp = (u64)dsi_get_pclk_rate(msm_host, is_dual_dsi) * bpp;
731 msm_host->src_clk_rate = pclk_bpp;
734 * esc clock is byte clock followed by a 4 bit divider,
735 * we need to find an escape clock frequency within the
736 * mipi DSI spec range within the maximum divider limit
737 * We iterate here between an escape clock frequencey
738 * between 20 Mhz to 5 Mhz and pick up the first one
739 * that can be supported by our divider
742 byte_mhz = msm_host->byte_clk_rate / 1000000;
744 for (esc_mhz = 20; esc_mhz >= 5; esc_mhz--) {
745 esc_div = DIV_ROUND_UP(byte_mhz, esc_mhz);
748 * TODO: Ideally, we shouldn't know what sort of divider
749 * is available in mmss_cc, we're just assuming that
750 * it'll always be a 4 bit divider. Need to come up with
753 if (esc_div >= 1 && esc_div <= 16)
760 msm_host->esc_clk_rate = msm_host->byte_clk_rate / esc_div;
762 DBG("esc=%d, src=%d", msm_host->esc_clk_rate,
763 msm_host->src_clk_rate);
768 static void dsi_intr_ctrl(struct msm_dsi_host *msm_host, u32 mask, int enable)
773 spin_lock_irqsave(&msm_host->intr_lock, flags);
774 intr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
781 DBG("intr=%x enable=%d", intr, enable);
783 dsi_write(msm_host, REG_DSI_INTR_CTRL, intr);
784 spin_unlock_irqrestore(&msm_host->intr_lock, flags);
787 static inline enum dsi_traffic_mode dsi_get_traffic_mode(const u32 mode_flags)
789 if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
791 else if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
792 return NON_BURST_SYNCH_PULSE;
794 return NON_BURST_SYNCH_EVENT;
797 static inline enum dsi_vid_dst_format dsi_get_vid_fmt(
798 const enum mipi_dsi_pixel_format mipi_fmt)
801 case MIPI_DSI_FMT_RGB888: return VID_DST_FORMAT_RGB888;
802 case MIPI_DSI_FMT_RGB666: return VID_DST_FORMAT_RGB666_LOOSE;
803 case MIPI_DSI_FMT_RGB666_PACKED: return VID_DST_FORMAT_RGB666;
804 case MIPI_DSI_FMT_RGB565: return VID_DST_FORMAT_RGB565;
805 default: return VID_DST_FORMAT_RGB888;
809 static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt(
810 const enum mipi_dsi_pixel_format mipi_fmt)
813 case MIPI_DSI_FMT_RGB888: return CMD_DST_FORMAT_RGB888;
814 case MIPI_DSI_FMT_RGB666_PACKED:
815 case MIPI_DSI_FMT_RGB666: return CMD_DST_FORMAT_RGB666;
816 case MIPI_DSI_FMT_RGB565: return CMD_DST_FORMAT_RGB565;
817 default: return CMD_DST_FORMAT_RGB888;
821 static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
822 struct msm_dsi_phy_shared_timings *phy_shared_timings)
824 u32 flags = msm_host->mode_flags;
825 enum mipi_dsi_pixel_format mipi_fmt = msm_host->format;
826 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
830 dsi_write(msm_host, REG_DSI_CTRL, 0);
834 if (flags & MIPI_DSI_MODE_VIDEO) {
835 if (flags & MIPI_DSI_MODE_VIDEO_HSE)
836 data |= DSI_VID_CFG0_PULSE_MODE_HSA_HE;
837 if (flags & MIPI_DSI_MODE_VIDEO_HFP)
838 data |= DSI_VID_CFG0_HFP_POWER_STOP;
839 if (flags & MIPI_DSI_MODE_VIDEO_HBP)
840 data |= DSI_VID_CFG0_HBP_POWER_STOP;
841 if (flags & MIPI_DSI_MODE_VIDEO_HSA)
842 data |= DSI_VID_CFG0_HSA_POWER_STOP;
843 /* Always set low power stop mode for BLLP
844 * to let command engine send packets
846 data |= DSI_VID_CFG0_EOF_BLLP_POWER_STOP |
847 DSI_VID_CFG0_BLLP_POWER_STOP;
848 data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags));
849 data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt));
850 data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel);
851 dsi_write(msm_host, REG_DSI_VID_CFG0, data);
853 /* Do not swap RGB colors */
854 data = DSI_VID_CFG1_RGB_SWAP(SWAP_RGB);
855 dsi_write(msm_host, REG_DSI_VID_CFG1, 0);
857 /* Do not swap RGB colors */
858 data = DSI_CMD_CFG0_RGB_SWAP(SWAP_RGB);
859 data |= DSI_CMD_CFG0_DST_FORMAT(dsi_get_cmd_fmt(mipi_fmt));
860 dsi_write(msm_host, REG_DSI_CMD_CFG0, data);
862 data = DSI_CMD_CFG1_WR_MEM_START(MIPI_DCS_WRITE_MEMORY_START) |
863 DSI_CMD_CFG1_WR_MEM_CONTINUE(
864 MIPI_DCS_WRITE_MEMORY_CONTINUE);
865 /* Always insert DCS command */
866 data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND;
867 dsi_write(msm_host, REG_DSI_CMD_CFG1, data);
870 dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL,
871 DSI_CMD_DMA_CTRL_FROM_FRAME_BUFFER |
872 DSI_CMD_DMA_CTRL_LOW_POWER);
875 /* Always assume dedicated TE pin */
876 data |= DSI_TRIG_CTRL_TE;
877 data |= DSI_TRIG_CTRL_MDP_TRIGGER(TRIGGER_NONE);
878 data |= DSI_TRIG_CTRL_DMA_TRIGGER(TRIGGER_SW);
879 data |= DSI_TRIG_CTRL_STREAM(msm_host->channel);
880 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
881 (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_2))
882 data |= DSI_TRIG_CTRL_BLOCK_DMA_WITHIN_FRAME;
883 dsi_write(msm_host, REG_DSI_TRIG_CTRL, data);
885 data = DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(phy_shared_timings->clk_post) |
886 DSI_CLKOUT_TIMING_CTRL_T_CLK_PRE(phy_shared_timings->clk_pre);
887 dsi_write(msm_host, REG_DSI_CLKOUT_TIMING_CTRL, data);
889 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
890 (cfg_hnd->minor > MSM_DSI_6G_VER_MINOR_V1_0) &&
891 phy_shared_timings->clk_pre_inc_by_2)
892 dsi_write(msm_host, REG_DSI_T_CLK_PRE_EXTEND,
893 DSI_T_CLK_PRE_EXTEND_INC_BY_2_BYTECLK);
896 if (!(flags & MIPI_DSI_MODE_EOT_PACKET))
897 data |= DSI_EOT_PACKET_CTRL_TX_EOT_APPEND;
898 dsi_write(msm_host, REG_DSI_EOT_PACKET_CTRL, data);
900 /* allow only ack-err-status to generate interrupt */
901 dsi_write(msm_host, REG_DSI_ERR_INT_MASK0, 0x13ff3fe0);
903 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1);
905 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
907 data = DSI_CTRL_CLK_EN;
909 DBG("lane number=%d", msm_host->lanes);
910 data |= ((DSI_CTRL_LANE0 << msm_host->lanes) - DSI_CTRL_LANE0);
912 dsi_write(msm_host, REG_DSI_LANE_SWAP_CTRL,
913 DSI_LANE_SWAP_CTRL_DLN_SWAP_SEL(msm_host->dlane_swap));
915 if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS))
916 dsi_write(msm_host, REG_DSI_LANE_CTRL,
917 DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST);
919 data |= DSI_CTRL_ENABLE;
921 dsi_write(msm_host, REG_DSI_CTRL, data);
924 static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_dual_dsi)
926 struct drm_display_mode *mode = msm_host->mode;
927 u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */
928 u32 h_total = mode->htotal;
929 u32 v_total = mode->vtotal;
930 u32 hs_end = mode->hsync_end - mode->hsync_start;
931 u32 vs_end = mode->vsync_end - mode->vsync_start;
932 u32 ha_start = h_total - mode->hsync_start;
933 u32 ha_end = ha_start + mode->hdisplay;
934 u32 va_start = v_total - mode->vsync_start;
935 u32 va_end = va_start + mode->vdisplay;
936 u32 hdisplay = mode->hdisplay;
942 * For dual DSI mode, the current DRM mode has
943 * the complete width of the panel. Since, the complete
944 * panel is driven by two DSI controllers, the horizontal
945 * timings have to be split between the two dsi controllers.
946 * Adjust the DSI host timing values accordingly.
956 if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) {
957 dsi_write(msm_host, REG_DSI_ACTIVE_H,
958 DSI_ACTIVE_H_START(ha_start) |
959 DSI_ACTIVE_H_END(ha_end));
960 dsi_write(msm_host, REG_DSI_ACTIVE_V,
961 DSI_ACTIVE_V_START(va_start) |
962 DSI_ACTIVE_V_END(va_end));
963 dsi_write(msm_host, REG_DSI_TOTAL,
964 DSI_TOTAL_H_TOTAL(h_total - 1) |
965 DSI_TOTAL_V_TOTAL(v_total - 1));
967 dsi_write(msm_host, REG_DSI_ACTIVE_HSYNC,
968 DSI_ACTIVE_HSYNC_START(hs_start) |
969 DSI_ACTIVE_HSYNC_END(hs_end));
970 dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_HPOS, 0);
971 dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_VPOS,
972 DSI_ACTIVE_VSYNC_VPOS_START(vs_start) |
973 DSI_ACTIVE_VSYNC_VPOS_END(vs_end));
974 } else { /* command mode */
975 /* image data and 1 byte write_memory_start cmd */
976 wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1;
978 dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_CTRL,
979 DSI_CMD_MDP_STREAM_CTRL_WORD_COUNT(wc) |
980 DSI_CMD_MDP_STREAM_CTRL_VIRTUAL_CHANNEL(
982 DSI_CMD_MDP_STREAM_CTRL_DATA_TYPE(
983 MIPI_DSI_DCS_LONG_WRITE));
985 dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_TOTAL,
986 DSI_CMD_MDP_STREAM_TOTAL_H_TOTAL(hdisplay) |
987 DSI_CMD_MDP_STREAM_TOTAL_V_TOTAL(mode->vdisplay));
991 static void dsi_sw_reset(struct msm_dsi_host *msm_host)
993 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
994 wmb(); /* clocks need to be enabled before reset */
996 dsi_write(msm_host, REG_DSI_RESET, 1);
997 wmb(); /* make sure reset happen */
998 dsi_write(msm_host, REG_DSI_RESET, 0);
1001 static void dsi_op_mode_config(struct msm_dsi_host *msm_host,
1002 bool video_mode, bool enable)
1006 dsi_ctrl = dsi_read(msm_host, REG_DSI_CTRL);
1009 dsi_ctrl &= ~(DSI_CTRL_ENABLE | DSI_CTRL_VID_MODE_EN |
1010 DSI_CTRL_CMD_MODE_EN);
1011 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE |
1012 DSI_IRQ_MASK_VIDEO_DONE, 0);
1015 dsi_ctrl |= DSI_CTRL_VID_MODE_EN;
1016 } else { /* command mode */
1017 dsi_ctrl |= DSI_CTRL_CMD_MODE_EN;
1018 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE, 1);
1020 dsi_ctrl |= DSI_CTRL_ENABLE;
1023 dsi_write(msm_host, REG_DSI_CTRL, dsi_ctrl);
1026 static void dsi_set_tx_power_mode(int mode, struct msm_dsi_host *msm_host)
1030 data = dsi_read(msm_host, REG_DSI_CMD_DMA_CTRL);
1033 data &= ~DSI_CMD_DMA_CTRL_LOW_POWER;
1035 data |= DSI_CMD_DMA_CTRL_LOW_POWER;
1037 dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, data);
1040 static void dsi_wait4video_done(struct msm_dsi_host *msm_host)
1043 struct device *dev = &msm_host->pdev->dev;
1045 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 1);
1047 reinit_completion(&msm_host->video_comp);
1049 ret = wait_for_completion_timeout(&msm_host->video_comp,
1050 msecs_to_jiffies(70));
1053 dev_err(dev, "wait for video done timed out\n");
1055 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0);
1058 static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host)
1060 if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO))
1063 if (msm_host->power_on && msm_host->enabled) {
1064 dsi_wait4video_done(msm_host);
1065 /* delay 4 ms to skip BLLP */
1066 usleep_range(2000, 4000);
1070 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size)
1072 struct drm_device *dev = msm_host->dev;
1073 struct msm_drm_private *priv = dev->dev_private;
1077 data = msm_gem_kernel_new(dev, size, MSM_BO_UNCACHED,
1079 &msm_host->tx_gem_obj, &iova);
1082 msm_host->tx_gem_obj = NULL;
1083 return PTR_ERR(data);
1086 msm_host->tx_size = msm_host->tx_gem_obj->size;
1091 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size)
1093 struct drm_device *dev = msm_host->dev;
1095 msm_host->tx_buf = dma_alloc_coherent(dev->dev, size,
1096 &msm_host->tx_buf_paddr, GFP_KERNEL);
1097 if (!msm_host->tx_buf)
1100 msm_host->tx_size = size;
1105 static void dsi_tx_buf_free(struct msm_dsi_host *msm_host)
1107 struct drm_device *dev = msm_host->dev;
1108 struct msm_drm_private *priv;
1111 * This is possible if we're tearing down before we've had a chance to
1112 * fully initialize. A very real possibility if our probe is deferred,
1113 * in which case we'll hit msm_dsi_host_destroy() without having run
1114 * through the dsi_tx_buf_alloc().
1119 priv = dev->dev_private;
1120 if (msm_host->tx_gem_obj) {
1121 msm_gem_put_iova(msm_host->tx_gem_obj, priv->kms->aspace);
1122 drm_gem_object_put_unlocked(msm_host->tx_gem_obj);
1123 msm_host->tx_gem_obj = NULL;
1126 if (msm_host->tx_buf)
1127 dma_free_coherent(dev->dev, msm_host->tx_size, msm_host->tx_buf,
1128 msm_host->tx_buf_paddr);
1131 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host)
1133 return msm_gem_get_vaddr(msm_host->tx_gem_obj);
1136 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host)
1138 return msm_host->tx_buf;
1141 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host)
1143 msm_gem_put_vaddr(msm_host->tx_gem_obj);
1147 * prepare cmd buffer to be txed
1149 static int dsi_cmd_dma_add(struct msm_dsi_host *msm_host,
1150 const struct mipi_dsi_msg *msg)
1152 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1153 struct mipi_dsi_packet packet;
1158 ret = mipi_dsi_create_packet(&packet, msg);
1160 pr_err("%s: create packet failed, %d\n", __func__, ret);
1163 len = (packet.size + 3) & (~0x3);
1165 if (len > msm_host->tx_size) {
1166 pr_err("%s: packet size is too big\n", __func__);
1170 data = cfg_hnd->ops->tx_buf_get(msm_host);
1172 ret = PTR_ERR(data);
1173 pr_err("%s: get vaddr failed, %d\n", __func__, ret);
1177 /* MSM specific command format in memory */
1178 data[0] = packet.header[1];
1179 data[1] = packet.header[2];
1180 data[2] = packet.header[0];
1181 data[3] = BIT(7); /* Last packet */
1182 if (mipi_dsi_packet_format_is_long(msg->type))
1184 if (msg->rx_buf && msg->rx_len)
1188 if (packet.payload && packet.payload_length)
1189 memcpy(data + 4, packet.payload, packet.payload_length);
1191 /* Append 0xff to the end */
1192 if (packet.size < len)
1193 memset(data + packet.size, 0xff, len - packet.size);
1195 if (cfg_hnd->ops->tx_buf_put)
1196 cfg_hnd->ops->tx_buf_put(msm_host);
1202 * dsi_short_read1_resp: 1 parameter
1204 static int dsi_short_read1_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1206 u8 *data = msg->rx_buf;
1207 if (data && (msg->rx_len >= 1)) {
1208 *data = buf[1]; /* strip out dcs type */
1211 pr_err("%s: read data does not match with rx_buf len %zu\n",
1212 __func__, msg->rx_len);
1218 * dsi_short_read2_resp: 2 parameter
1220 static int dsi_short_read2_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1222 u8 *data = msg->rx_buf;
1223 if (data && (msg->rx_len >= 2)) {
1224 data[0] = buf[1]; /* strip out dcs type */
1228 pr_err("%s: read data does not match with rx_buf len %zu\n",
1229 __func__, msg->rx_len);
1234 static int dsi_long_read_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1236 /* strip out 4 byte dcs header */
1237 if (msg->rx_buf && msg->rx_len)
1238 memcpy(msg->rx_buf, buf + 4, msg->rx_len);
1243 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *dma_base)
1245 struct drm_device *dev = msm_host->dev;
1246 struct msm_drm_private *priv = dev->dev_private;
1251 return msm_gem_get_iova(msm_host->tx_gem_obj,
1252 priv->kms->aspace, dma_base);
1255 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *dma_base)
1260 *dma_base = msm_host->tx_buf_paddr;
1264 static int dsi_cmd_dma_tx(struct msm_dsi_host *msm_host, int len)
1266 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1271 ret = cfg_hnd->ops->dma_base_get(msm_host, &dma_base);
1273 pr_err("%s: failed to get iova: %d\n", __func__, ret);
1277 reinit_completion(&msm_host->dma_comp);
1279 dsi_wait4video_eng_busy(msm_host);
1281 triggered = msm_dsi_manager_cmd_xfer_trigger(
1282 msm_host->id, dma_base, len);
1284 ret = wait_for_completion_timeout(&msm_host->dma_comp,
1285 msecs_to_jiffies(200));
1297 static int dsi_cmd_dma_rx(struct msm_dsi_host *msm_host,
1298 u8 *buf, int rx_byte, int pkt_size)
1300 u32 *lp, *temp, data;
1304 int repeated_bytes = 0;
1305 int buf_offset = buf - msm_host->rx_buf;
1309 cnt = (rx_byte + 3) >> 2;
1311 cnt = 4; /* 4 x 32 bits registers only */
1316 read_cnt = pkt_size + 6;
1319 * In case of multiple reads from the panel, after the first read, there
1320 * is possibility that there are some bytes in the payload repeating in
1321 * the RDBK_DATA registers. Since we read all the parameters from the
1322 * panel right from the first byte for every pass. We need to skip the
1323 * repeating bytes and then append the new parameters to the rx buffer.
1325 if (read_cnt > 16) {
1327 /* Any data more than 16 bytes will be shifted out.
1328 * The temp read buffer should already contain these bytes.
1329 * The remaining bytes in read buffer are the repeated bytes.
1331 bytes_shifted = read_cnt - 16;
1332 repeated_bytes = buf_offset - bytes_shifted;
1335 for (i = cnt - 1; i >= 0; i--) {
1336 data = dsi_read(msm_host, REG_DSI_RDBK_DATA(i));
1337 *temp++ = ntohl(data); /* to host byte order */
1338 DBG("data = 0x%x and ntohl(data) = 0x%x", data, ntohl(data));
1341 for (i = repeated_bytes; i < 16; i++)
1347 static int dsi_cmds2buf_tx(struct msm_dsi_host *msm_host,
1348 const struct mipi_dsi_msg *msg)
1351 int bllp_len = msm_host->mode->hdisplay *
1352 dsi_get_bpp(msm_host->format) / 8;
1354 len = dsi_cmd_dma_add(msm_host, msg);
1356 pr_err("%s: failed to add cmd type = 0x%x\n",
1357 __func__, msg->type);
1361 /* for video mode, do not send cmds more than
1362 * one pixel line, since it only transmit it
1365 /* TODO: if the command is sent in LP mode, the bit rate is only
1366 * half of esc clk rate. In this case, if the video is already
1367 * actively streaming, we need to check more carefully if the
1368 * command can be fit into one BLLP.
1370 if ((msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) && (len > bllp_len)) {
1371 pr_err("%s: cmd cannot fit into BLLP period, len=%d\n",
1376 ret = dsi_cmd_dma_tx(msm_host, len);
1378 pr_err("%s: cmd dma tx failed, type=0x%x, data0=0x%x, len=%d\n",
1379 __func__, msg->type, (*(u8 *)(msg->tx_buf)), len);
1386 static void dsi_sw_reset_restore(struct msm_dsi_host *msm_host)
1390 data0 = dsi_read(msm_host, REG_DSI_CTRL);
1392 data1 &= ~DSI_CTRL_ENABLE;
1393 dsi_write(msm_host, REG_DSI_CTRL, data1);
1395 * dsi controller need to be disabled before
1400 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
1401 wmb(); /* make sure clocks enabled */
1403 /* dsi controller can only be reset while clocks are running */
1404 dsi_write(msm_host, REG_DSI_RESET, 1);
1405 wmb(); /* make sure reset happen */
1406 dsi_write(msm_host, REG_DSI_RESET, 0);
1407 wmb(); /* controller out of reset */
1408 dsi_write(msm_host, REG_DSI_CTRL, data0);
1409 wmb(); /* make sure dsi controller enabled again */
1412 static void dsi_hpd_worker(struct work_struct *work)
1414 struct msm_dsi_host *msm_host =
1415 container_of(work, struct msm_dsi_host, hpd_work);
1417 drm_helper_hpd_irq_event(msm_host->dev);
1420 static void dsi_err_worker(struct work_struct *work)
1422 struct msm_dsi_host *msm_host =
1423 container_of(work, struct msm_dsi_host, err_work);
1424 u32 status = msm_host->err_work_state;
1426 pr_err_ratelimited("%s: status=%x\n", __func__, status);
1427 if (status & DSI_ERR_STATE_MDP_FIFO_UNDERFLOW)
1428 dsi_sw_reset_restore(msm_host);
1430 /* It is safe to clear here because error irq is disabled. */
1431 msm_host->err_work_state = 0;
1433 /* enable dsi error interrupt */
1434 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1);
1437 static void dsi_ack_err_status(struct msm_dsi_host *msm_host)
1441 status = dsi_read(msm_host, REG_DSI_ACK_ERR_STATUS);
1444 dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, status);
1445 /* Writing of an extra 0 needed to clear error bits */
1446 dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, 0);
1447 msm_host->err_work_state |= DSI_ERR_STATE_ACK;
1451 static void dsi_timeout_status(struct msm_dsi_host *msm_host)
1455 status = dsi_read(msm_host, REG_DSI_TIMEOUT_STATUS);
1458 dsi_write(msm_host, REG_DSI_TIMEOUT_STATUS, status);
1459 msm_host->err_work_state |= DSI_ERR_STATE_TIMEOUT;
1463 static void dsi_dln0_phy_err(struct msm_dsi_host *msm_host)
1467 status = dsi_read(msm_host, REG_DSI_DLN0_PHY_ERR);
1469 if (status & (DSI_DLN0_PHY_ERR_DLN0_ERR_ESC |
1470 DSI_DLN0_PHY_ERR_DLN0_ERR_SYNC_ESC |
1471 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTROL |
1472 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP0 |
1473 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP1)) {
1474 dsi_write(msm_host, REG_DSI_DLN0_PHY_ERR, status);
1475 msm_host->err_work_state |= DSI_ERR_STATE_DLN0_PHY;
1479 static void dsi_fifo_status(struct msm_dsi_host *msm_host)
1483 status = dsi_read(msm_host, REG_DSI_FIFO_STATUS);
1485 /* fifo underflow, overflow */
1487 dsi_write(msm_host, REG_DSI_FIFO_STATUS, status);
1488 msm_host->err_work_state |= DSI_ERR_STATE_FIFO;
1489 if (status & DSI_FIFO_STATUS_CMD_MDP_FIFO_UNDERFLOW)
1490 msm_host->err_work_state |=
1491 DSI_ERR_STATE_MDP_FIFO_UNDERFLOW;
1495 static void dsi_status(struct msm_dsi_host *msm_host)
1499 status = dsi_read(msm_host, REG_DSI_STATUS0);
1501 if (status & DSI_STATUS0_INTERLEAVE_OP_CONTENTION) {
1502 dsi_write(msm_host, REG_DSI_STATUS0, status);
1503 msm_host->err_work_state |=
1504 DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION;
1508 static void dsi_clk_status(struct msm_dsi_host *msm_host)
1512 status = dsi_read(msm_host, REG_DSI_CLK_STATUS);
1514 if (status & DSI_CLK_STATUS_PLL_UNLOCKED) {
1515 dsi_write(msm_host, REG_DSI_CLK_STATUS, status);
1516 msm_host->err_work_state |= DSI_ERR_STATE_PLL_UNLOCKED;
1520 static void dsi_error(struct msm_dsi_host *msm_host)
1522 /* disable dsi error interrupt */
1523 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 0);
1525 dsi_clk_status(msm_host);
1526 dsi_fifo_status(msm_host);
1527 dsi_ack_err_status(msm_host);
1528 dsi_timeout_status(msm_host);
1529 dsi_status(msm_host);
1530 dsi_dln0_phy_err(msm_host);
1532 queue_work(msm_host->workqueue, &msm_host->err_work);
1535 static irqreturn_t dsi_host_irq(int irq, void *ptr)
1537 struct msm_dsi_host *msm_host = ptr;
1539 unsigned long flags;
1541 if (!msm_host->ctrl_base)
1544 spin_lock_irqsave(&msm_host->intr_lock, flags);
1545 isr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
1546 dsi_write(msm_host, REG_DSI_INTR_CTRL, isr);
1547 spin_unlock_irqrestore(&msm_host->intr_lock, flags);
1549 DBG("isr=0x%x, id=%d", isr, msm_host->id);
1551 if (isr & DSI_IRQ_ERROR)
1552 dsi_error(msm_host);
1554 if (isr & DSI_IRQ_VIDEO_DONE)
1555 complete(&msm_host->video_comp);
1557 if (isr & DSI_IRQ_CMD_DMA_DONE)
1558 complete(&msm_host->dma_comp);
1563 static int dsi_host_init_panel_gpios(struct msm_dsi_host *msm_host,
1564 struct device *panel_device)
1566 msm_host->disp_en_gpio = devm_gpiod_get_optional(panel_device,
1569 if (IS_ERR(msm_host->disp_en_gpio)) {
1570 DBG("cannot get disp-enable-gpios %ld",
1571 PTR_ERR(msm_host->disp_en_gpio));
1572 return PTR_ERR(msm_host->disp_en_gpio);
1575 msm_host->te_gpio = devm_gpiod_get_optional(panel_device, "disp-te",
1577 if (IS_ERR(msm_host->te_gpio)) {
1578 DBG("cannot get disp-te-gpios %ld", PTR_ERR(msm_host->te_gpio));
1579 return PTR_ERR(msm_host->te_gpio);
1585 static int dsi_host_attach(struct mipi_dsi_host *host,
1586 struct mipi_dsi_device *dsi)
1588 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1591 if (dsi->lanes > msm_host->num_data_lanes)
1594 msm_host->channel = dsi->channel;
1595 msm_host->lanes = dsi->lanes;
1596 msm_host->format = dsi->format;
1597 msm_host->mode_flags = dsi->mode_flags;
1599 msm_dsi_manager_attach_dsi_device(msm_host->id, dsi->mode_flags);
1601 /* Some gpios defined in panel DT need to be controlled by host */
1602 ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev);
1606 DBG("id=%d", msm_host->id);
1608 queue_work(msm_host->workqueue, &msm_host->hpd_work);
1613 static int dsi_host_detach(struct mipi_dsi_host *host,
1614 struct mipi_dsi_device *dsi)
1616 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1618 msm_host->device_node = NULL;
1620 DBG("id=%d", msm_host->id);
1622 queue_work(msm_host->workqueue, &msm_host->hpd_work);
1627 static ssize_t dsi_host_transfer(struct mipi_dsi_host *host,
1628 const struct mipi_dsi_msg *msg)
1630 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1633 if (!msg || !msm_host->power_on)
1636 mutex_lock(&msm_host->cmd_mutex);
1637 ret = msm_dsi_manager_cmd_xfer(msm_host->id, msg);
1638 mutex_unlock(&msm_host->cmd_mutex);
1643 static struct mipi_dsi_host_ops dsi_host_ops = {
1644 .attach = dsi_host_attach,
1645 .detach = dsi_host_detach,
1646 .transfer = dsi_host_transfer,
1650 * List of supported physical to logical lane mappings.
1651 * For example, the 2nd entry represents the following mapping:
1653 * "3012": Logic 3->Phys 0; Logic 0->Phys 1; Logic 1->Phys 2; Logic 2->Phys 3;
1655 static const int supported_data_lane_swaps[][4] = {
1666 static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host,
1667 struct device_node *ep)
1669 struct device *dev = &msm_host->pdev->dev;
1670 struct property *prop;
1672 int ret, i, len, num_lanes;
1674 prop = of_find_property(ep, "data-lanes", &len);
1677 "failed to find data lane mapping, using default\n");
1681 num_lanes = len / sizeof(u32);
1683 if (num_lanes < 1 || num_lanes > 4) {
1684 dev_err(dev, "bad number of data lanes\n");
1688 msm_host->num_data_lanes = num_lanes;
1690 ret = of_property_read_u32_array(ep, "data-lanes", lane_map,
1693 dev_err(dev, "failed to read lane data\n");
1698 * compare DT specified physical-logical lane mappings with the ones
1699 * supported by hardware
1701 for (i = 0; i < ARRAY_SIZE(supported_data_lane_swaps); i++) {
1702 const int *swap = supported_data_lane_swaps[i];
1706 * the data-lanes array we get from DT has a logical->physical
1707 * mapping. The "data lane swap" register field represents
1708 * supported configurations in a physical->logical mapping.
1709 * Translate the DT mapping to what we understand and find a
1710 * configuration that works.
1712 for (j = 0; j < num_lanes; j++) {
1713 if (lane_map[j] < 0 || lane_map[j] > 3)
1714 dev_err(dev, "bad physical lane entry %u\n",
1717 if (swap[lane_map[j]] != j)
1721 if (j == num_lanes) {
1722 msm_host->dlane_swap = i;
1730 static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
1732 struct device *dev = &msm_host->pdev->dev;
1733 struct device_node *np = dev->of_node;
1734 struct device_node *endpoint, *device_node;
1738 * Get the endpoint of the output port of the DSI host. In our case,
1739 * this is mapped to port number with reg = 1. Don't return an error if
1740 * the remote endpoint isn't defined. It's possible that there is
1741 * nothing connected to the dsi output.
1743 endpoint = of_graph_get_endpoint_by_regs(np, 1, -1);
1745 dev_dbg(dev, "%s: no endpoint\n", __func__);
1749 ret = dsi_host_parse_lane_data(msm_host, endpoint);
1751 dev_err(dev, "%s: invalid lane configuration %d\n",
1757 /* Get panel node from the output port's endpoint data */
1758 device_node = of_graph_get_remote_node(np, 1, 0);
1760 dev_dbg(dev, "%s: no valid device\n", __func__);
1765 msm_host->device_node = device_node;
1767 if (of_property_read_bool(np, "syscon-sfpb")) {
1768 msm_host->sfpb = syscon_regmap_lookup_by_phandle(np,
1770 if (IS_ERR(msm_host->sfpb)) {
1771 dev_err(dev, "%s: failed to get sfpb regmap\n",
1773 ret = PTR_ERR(msm_host->sfpb);
1777 of_node_put(device_node);
1780 of_node_put(endpoint);
1785 static int dsi_host_get_id(struct msm_dsi_host *msm_host)
1787 struct platform_device *pdev = msm_host->pdev;
1788 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
1789 struct resource *res;
1792 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dsi_ctrl");
1796 for (i = 0; i < cfg->num_dsi; i++) {
1797 if (cfg->io_start[i] == res->start)
1804 int msm_dsi_host_init(struct msm_dsi *msm_dsi)
1806 struct msm_dsi_host *msm_host = NULL;
1807 struct platform_device *pdev = msm_dsi->pdev;
1810 msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
1812 pr_err("%s: FAILED: cannot alloc dsi host\n",
1818 msm_host->pdev = pdev;
1819 msm_dsi->host = &msm_host->base;
1821 ret = dsi_host_parse_dt(msm_host);
1823 pr_err("%s: failed to parse dt\n", __func__);
1827 msm_host->ctrl_base = msm_ioremap(pdev, "dsi_ctrl", "DSI CTRL");
1828 if (IS_ERR(msm_host->ctrl_base)) {
1829 pr_err("%s: unable to map Dsi ctrl base\n", __func__);
1830 ret = PTR_ERR(msm_host->ctrl_base);
1834 pm_runtime_enable(&pdev->dev);
1836 msm_host->cfg_hnd = dsi_get_config(msm_host);
1837 if (!msm_host->cfg_hnd) {
1839 pr_err("%s: get config failed\n", __func__);
1843 msm_host->id = dsi_host_get_id(msm_host);
1844 if (msm_host->id < 0) {
1846 pr_err("%s: unable to identify DSI host index\n", __func__);
1850 /* fixup base address by io offset */
1851 msm_host->ctrl_base += msm_host->cfg_hnd->cfg->io_offset;
1853 ret = dsi_regulator_init(msm_host);
1855 pr_err("%s: regulator init failed\n", __func__);
1859 ret = dsi_clk_init(msm_host);
1861 pr_err("%s: unable to initialize dsi clks\n", __func__);
1865 msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL);
1866 if (!msm_host->rx_buf) {
1868 pr_err("%s: alloc rx temp buf failed\n", __func__);
1872 init_completion(&msm_host->dma_comp);
1873 init_completion(&msm_host->video_comp);
1874 mutex_init(&msm_host->dev_mutex);
1875 mutex_init(&msm_host->cmd_mutex);
1876 spin_lock_init(&msm_host->intr_lock);
1878 /* setup workqueue */
1879 msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0);
1880 INIT_WORK(&msm_host->err_work, dsi_err_worker);
1881 INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker);
1883 msm_dsi->id = msm_host->id;
1885 DBG("Dsi Host %d initialized", msm_host->id);
1892 void msm_dsi_host_destroy(struct mipi_dsi_host *host)
1894 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1897 dsi_tx_buf_free(msm_host);
1898 if (msm_host->workqueue) {
1899 flush_workqueue(msm_host->workqueue);
1900 destroy_workqueue(msm_host->workqueue);
1901 msm_host->workqueue = NULL;
1904 mutex_destroy(&msm_host->cmd_mutex);
1905 mutex_destroy(&msm_host->dev_mutex);
1907 pm_runtime_disable(&msm_host->pdev->dev);
1910 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
1911 struct drm_device *dev)
1913 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1914 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1915 struct platform_device *pdev = msm_host->pdev;
1918 msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
1919 if (msm_host->irq < 0) {
1920 ret = msm_host->irq;
1921 dev_err(dev->dev, "failed to get irq: %d\n", ret);
1925 ret = devm_request_irq(&pdev->dev, msm_host->irq,
1926 dsi_host_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
1927 "dsi_isr", msm_host);
1929 dev_err(&pdev->dev, "failed to request IRQ%u: %d\n",
1930 msm_host->irq, ret);
1934 msm_host->dev = dev;
1935 ret = cfg_hnd->ops->tx_buf_alloc(msm_host, SZ_4K);
1937 pr_err("%s: alloc tx gem obj failed, %d\n", __func__, ret);
1944 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer)
1946 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1949 /* Register mipi dsi host */
1950 if (!msm_host->registered) {
1951 host->dev = &msm_host->pdev->dev;
1952 host->ops = &dsi_host_ops;
1953 ret = mipi_dsi_host_register(host);
1957 msm_host->registered = true;
1959 /* If the panel driver has not been probed after host register,
1960 * we should defer the host's probe.
1961 * It makes sure panel is connected when fbcon detects
1962 * connector status and gets the proper display mode to
1963 * create framebuffer.
1964 * Don't try to defer if there is nothing connected to the dsi
1967 if (check_defer && msm_host->device_node) {
1968 if (IS_ERR(of_drm_find_panel(msm_host->device_node)))
1969 if (!of_drm_find_bridge(msm_host->device_node))
1970 return -EPROBE_DEFER;
1977 void msm_dsi_host_unregister(struct mipi_dsi_host *host)
1979 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1981 if (msm_host->registered) {
1982 mipi_dsi_host_unregister(host);
1985 msm_host->registered = false;
1989 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
1990 const struct mipi_dsi_msg *msg)
1992 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1993 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1995 /* TODO: make sure dsi_cmd_mdp is idle.
1996 * Since DSI6G v1.2.0, we can set DSI_TRIG_CTRL.BLOCK_DMA_WITHIN_FRAME
1997 * to ask H/W to wait until cmd mdp is idle. S/W wait is not needed.
1998 * How to handle the old versions? Wait for mdp cmd done?
2002 * mdss interrupt is generated in mdp core clock domain
2003 * mdp clock need to be enabled to receive dsi interrupt
2005 pm_runtime_get_sync(&msm_host->pdev->dev);
2006 cfg_hnd->ops->link_clk_enable(msm_host);
2008 /* TODO: vote for bus bandwidth */
2010 if (!(msg->flags & MIPI_DSI_MSG_USE_LPM))
2011 dsi_set_tx_power_mode(0, msm_host);
2013 msm_host->dma_cmd_ctrl_restore = dsi_read(msm_host, REG_DSI_CTRL);
2014 dsi_write(msm_host, REG_DSI_CTRL,
2015 msm_host->dma_cmd_ctrl_restore |
2016 DSI_CTRL_CMD_MODE_EN |
2018 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 1);
2023 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
2024 const struct mipi_dsi_msg *msg)
2026 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2027 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2029 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 0);
2030 dsi_write(msm_host, REG_DSI_CTRL, msm_host->dma_cmd_ctrl_restore);
2032 if (!(msg->flags & MIPI_DSI_MSG_USE_LPM))
2033 dsi_set_tx_power_mode(1, msm_host);
2035 /* TODO: unvote for bus bandwidth */
2037 cfg_hnd->ops->link_clk_disable(msm_host);
2038 pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2041 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
2042 const struct mipi_dsi_msg *msg)
2044 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2046 return dsi_cmds2buf_tx(msm_host, msg);
2049 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
2050 const struct mipi_dsi_msg *msg)
2052 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2053 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2054 int data_byte, rx_byte, dlen, end;
2055 int short_response, diff, pkt_size, ret = 0;
2057 int rlen = msg->rx_len;
2066 data_byte = 10; /* first read */
2067 if (rlen < data_byte)
2070 pkt_size = data_byte;
2071 rx_byte = data_byte + 6; /* 4 header + 2 crc */
2074 buf = msm_host->rx_buf;
2077 u8 tx[2] = {pkt_size & 0xff, pkt_size >> 8};
2078 struct mipi_dsi_msg max_pkt_size_msg = {
2079 .channel = msg->channel,
2080 .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
2085 DBG("rlen=%d pkt_size=%d rx_byte=%d",
2086 rlen, pkt_size, rx_byte);
2088 ret = dsi_cmds2buf_tx(msm_host, &max_pkt_size_msg);
2090 pr_err("%s: Set max pkt size failed, %d\n",
2095 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
2096 (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_1)) {
2097 /* Clear the RDBK_DATA registers */
2098 dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL,
2099 DSI_RDBK_DATA_CTRL_CLR);
2100 wmb(); /* make sure the RDBK registers are cleared */
2101 dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, 0);
2102 wmb(); /* release cleared status before transfer */
2105 ret = dsi_cmds2buf_tx(msm_host, msg);
2106 if (ret < msg->tx_len) {
2107 pr_err("%s: Read cmd Tx failed, %d\n", __func__, ret);
2112 * once cmd_dma_done interrupt received,
2113 * return data from client is ready and stored
2114 * at RDBK_DATA register already
2115 * since rx fifo is 16 bytes, dcs header is kept at first loop,
2116 * after that dcs header lost during shift into registers
2118 dlen = dsi_cmd_dma_rx(msm_host, buf, rx_byte, pkt_size);
2126 if (rlen <= data_byte) {
2127 diff = data_byte - rlen;
2135 dlen -= 2; /* 2 crc */
2137 buf += dlen; /* next start position */
2138 data_byte = 14; /* NOT first read */
2139 if (rlen < data_byte)
2142 pkt_size += data_byte;
2143 DBG("buf=%p dlen=%d diff=%d", buf, dlen, diff);
2148 * For single Long read, if the requested rlen < 10,
2149 * we need to shift the start position of rx
2150 * data buffer to skip the bytes which are not
2153 if (pkt_size < 10 && !short_response)
2154 buf = msm_host->rx_buf + (10 - rlen);
2156 buf = msm_host->rx_buf;
2160 case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT:
2161 pr_err("%s: rx ACK_ERR_PACLAGE\n", __func__);
2164 case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE:
2165 case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE:
2166 ret = dsi_short_read1_resp(buf, msg);
2168 case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE:
2169 case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE:
2170 ret = dsi_short_read2_resp(buf, msg);
2172 case MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE:
2173 case MIPI_DSI_RX_DCS_LONG_READ_RESPONSE:
2174 ret = dsi_long_read_resp(buf, msg);
2177 pr_warn("%s:Invalid response cmd\n", __func__);
2184 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, u32 dma_base,
2187 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2189 dsi_write(msm_host, REG_DSI_DMA_BASE, dma_base);
2190 dsi_write(msm_host, REG_DSI_DMA_LEN, len);
2191 dsi_write(msm_host, REG_DSI_TRIG_DMA, 1);
2193 /* Make sure trigger happens */
2197 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
2198 struct msm_dsi_pll *src_pll)
2200 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2201 struct clk *byte_clk_provider, *pixel_clk_provider;
2204 ret = msm_dsi_pll_get_clk_provider(src_pll,
2205 &byte_clk_provider, &pixel_clk_provider);
2207 pr_info("%s: can't get provider from pll, don't set parent\n",
2212 ret = clk_set_parent(msm_host->byte_clk_src, byte_clk_provider);
2214 pr_err("%s: can't set parent to byte_clk_src. ret=%d\n",
2219 ret = clk_set_parent(msm_host->pixel_clk_src, pixel_clk_provider);
2221 pr_err("%s: can't set parent to pixel_clk_src. ret=%d\n",
2226 if (msm_host->dsi_clk_src) {
2227 ret = clk_set_parent(msm_host->dsi_clk_src, pixel_clk_provider);
2229 pr_err("%s: can't set parent to dsi_clk_src. ret=%d\n",
2235 if (msm_host->esc_clk_src) {
2236 ret = clk_set_parent(msm_host->esc_clk_src, byte_clk_provider);
2238 pr_err("%s: can't set parent to esc_clk_src. ret=%d\n",
2248 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host)
2250 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2253 dsi_write(msm_host, REG_DSI_PHY_RESET, DSI_PHY_RESET_RESET);
2254 /* Make sure fully reset */
2257 dsi_write(msm_host, REG_DSI_PHY_RESET, 0);
2261 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
2262 struct msm_dsi_phy_clk_request *clk_req,
2265 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2266 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2269 ret = cfg_hnd->ops->calc_clk_rate(msm_host, is_dual_dsi);
2271 pr_err("%s: unable to calc clk rate, %d\n", __func__, ret);
2275 clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
2276 clk_req->escclk_rate = msm_host->esc_clk_rate;
2279 int msm_dsi_host_enable(struct mipi_dsi_host *host)
2281 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2283 dsi_op_mode_config(msm_host,
2284 !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), true);
2286 /* TODO: clock should be turned off for command mode,
2287 * and only turned on before MDP START.
2288 * This part of code should be enabled once mdp driver support it.
2290 /* if (msm_panel->mode == MSM_DSI_CMD_MODE) {
2291 * dsi_link_clk_disable(msm_host);
2292 * pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2295 msm_host->enabled = true;
2299 int msm_dsi_host_disable(struct mipi_dsi_host *host)
2301 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2303 msm_host->enabled = false;
2304 dsi_op_mode_config(msm_host,
2305 !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), false);
2307 /* Since we have disabled INTF, the video engine won't stop so that
2308 * the cmd engine will be blocked.
2309 * Reset to disable video engine so that we can send off cmd.
2311 dsi_sw_reset(msm_host);
2316 static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable)
2318 enum sfpb_ahb_arb_master_port_en en;
2320 if (!msm_host->sfpb)
2323 en = enable ? SFPB_MASTER_PORT_ENABLE : SFPB_MASTER_PORT_DISABLE;
2325 regmap_update_bits(msm_host->sfpb, REG_SFPB_GPREG,
2326 SFPB_GPREG_MASTER_PORT_EN__MASK,
2327 SFPB_GPREG_MASTER_PORT_EN(en));
2330 int msm_dsi_host_power_on(struct mipi_dsi_host *host,
2331 struct msm_dsi_phy_shared_timings *phy_shared_timings,
2334 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2335 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2338 mutex_lock(&msm_host->dev_mutex);
2339 if (msm_host->power_on) {
2340 DBG("dsi host already on");
2344 msm_dsi_sfpb_config(msm_host, true);
2346 ret = dsi_host_regulator_enable(msm_host);
2348 pr_err("%s:Failed to enable vregs.ret=%d\n",
2353 pm_runtime_get_sync(&msm_host->pdev->dev);
2354 ret = cfg_hnd->ops->link_clk_enable(msm_host);
2356 pr_err("%s: failed to enable link clocks. ret=%d\n",
2358 goto fail_disable_reg;
2361 ret = pinctrl_pm_select_default_state(&msm_host->pdev->dev);
2363 pr_err("%s: failed to set pinctrl default state, %d\n",
2365 goto fail_disable_clk;
2368 dsi_timing_setup(msm_host, is_dual_dsi);
2369 dsi_sw_reset(msm_host);
2370 dsi_ctrl_config(msm_host, true, phy_shared_timings);
2372 if (msm_host->disp_en_gpio)
2373 gpiod_set_value(msm_host->disp_en_gpio, 1);
2375 msm_host->power_on = true;
2376 mutex_unlock(&msm_host->dev_mutex);
2381 cfg_hnd->ops->link_clk_disable(msm_host);
2382 pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2384 dsi_host_regulator_disable(msm_host);
2386 mutex_unlock(&msm_host->dev_mutex);
2390 int msm_dsi_host_power_off(struct mipi_dsi_host *host)
2392 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2393 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2395 mutex_lock(&msm_host->dev_mutex);
2396 if (!msm_host->power_on) {
2397 DBG("dsi host already off");
2401 dsi_ctrl_config(msm_host, false, NULL);
2403 if (msm_host->disp_en_gpio)
2404 gpiod_set_value(msm_host->disp_en_gpio, 0);
2406 pinctrl_pm_select_sleep_state(&msm_host->pdev->dev);
2408 cfg_hnd->ops->link_clk_disable(msm_host);
2409 pm_runtime_put_autosuspend(&msm_host->pdev->dev);
2411 dsi_host_regulator_disable(msm_host);
2413 msm_dsi_sfpb_config(msm_host, false);
2417 msm_host->power_on = false;
2420 mutex_unlock(&msm_host->dev_mutex);
2424 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
2425 struct drm_display_mode *mode)
2427 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2429 if (msm_host->mode) {
2430 drm_mode_destroy(msm_host->dev, msm_host->mode);
2431 msm_host->mode = NULL;
2434 msm_host->mode = drm_mode_duplicate(msm_host->dev, mode);
2435 if (!msm_host->mode) {
2436 pr_err("%s: cannot duplicate mode\n", __func__);
2443 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
2444 unsigned long *panel_flags)
2446 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2447 struct drm_panel *panel;
2449 panel = of_drm_find_panel(msm_host->device_node);
2451 *panel_flags = msm_host->mode_flags;
2456 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host)
2458 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2460 return of_drm_find_bridge(msm_host->device_node);