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/pm_opp.h>
18 #include <linux/regmap.h>
19 #include <linux/regulator/consumer.h>
20 #include <linux/spinlock.h>
22 #include <video/mipi_display.h>
30 #include "phy/dsi_phy.h"
32 #define DSI_RESET_TOGGLE_DELAY_MS 20
34 static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor)
42 * From DSI6G(v3), addition of a 6G_HW_VERSION register at offset 0
43 * makes all other registers 4-byte shifted down.
45 * In order to identify between DSI6G(v3) and beyond, and DSIv2 and
46 * older, we read the DSI_VERSION register without any shift(offset
47 * 0x1f0). In the case of DSIv2, this hast to be a non-zero value. In
48 * the case of DSI6G, this has to be zero (the offset points to a
49 * scratch register which we never touch)
52 ver = msm_readl(base + REG_DSI_VERSION);
54 /* older dsi host, there is no register shift */
55 ver = FIELD(ver, DSI_VERSION_MAJOR);
56 if (ver <= MSM_DSI_VER_MAJOR_V2) {
66 * newer host, offset 0 has 6G_HW_VERSION, the rest of the
67 * registers are shifted down, read DSI_VERSION again with
70 ver = msm_readl(base + DSI_6G_REG_SHIFT + REG_DSI_VERSION);
71 ver = FIELD(ver, DSI_VERSION_MAJOR);
72 if (ver == MSM_DSI_VER_MAJOR_6G) {
75 *minor = msm_readl(base + REG_DSI_6G_HW_VERSION);
83 #define DSI_ERR_STATE_ACK 0x0000
84 #define DSI_ERR_STATE_TIMEOUT 0x0001
85 #define DSI_ERR_STATE_DLN0_PHY 0x0002
86 #define DSI_ERR_STATE_FIFO 0x0004
87 #define DSI_ERR_STATE_MDP_FIFO_UNDERFLOW 0x0008
88 #define DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION 0x0010
89 #define DSI_ERR_STATE_PLL_UNLOCKED 0x0020
91 #define DSI_CLK_CTRL_ENABLE_CLKS \
92 (DSI_CLK_CTRL_AHBS_HCLK_ON | DSI_CLK_CTRL_AHBM_SCLK_ON | \
93 DSI_CLK_CTRL_PCLK_ON | DSI_CLK_CTRL_DSICLK_ON | \
94 DSI_CLK_CTRL_BYTECLK_ON | DSI_CLK_CTRL_ESCCLK_ON | \
95 DSI_CLK_CTRL_FORCE_ON_DYN_AHBM_HCLK)
98 struct mipi_dsi_host base;
100 struct platform_device *pdev;
101 struct drm_device *dev;
105 void __iomem *ctrl_base;
106 phys_addr_t ctrl_size;
107 struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX];
110 struct clk_bulk_data bus_clks[DSI_BUS_CLK_MAX];
112 struct clk *byte_clk;
114 struct clk *pixel_clk;
115 struct clk *byte_clk_src;
116 struct clk *pixel_clk_src;
117 struct clk *byte_intf_clk;
119 unsigned long byte_clk_rate;
120 unsigned long pixel_clk_rate;
121 unsigned long esc_clk_rate;
123 /* DSI v2 specific clocks */
125 struct clk *esc_clk_src;
126 struct clk *dsi_clk_src;
128 unsigned long src_clk_rate;
130 struct gpio_desc *disp_en_gpio;
131 struct gpio_desc *te_gpio;
133 const struct msm_dsi_cfg_handler *cfg_hnd;
135 struct completion dma_comp;
136 struct completion video_comp;
137 struct mutex dev_mutex;
138 struct mutex cmd_mutex;
139 spinlock_t intr_lock; /* Protect interrupt ctrl register */
142 struct work_struct err_work;
143 struct work_struct hpd_work;
144 struct workqueue_struct *workqueue;
146 /* DSI 6G TX buffer*/
147 struct drm_gem_object *tx_gem_obj;
149 /* DSI v2 TX buffer */
151 dma_addr_t tx_buf_paddr;
159 struct drm_display_mode *mode;
161 /* connected device info */
162 struct device_node *device_node;
163 unsigned int channel;
165 enum mipi_dsi_pixel_format format;
166 unsigned long mode_flags;
168 /* lane data parsed via DT */
175 u32 dma_cmd_ctrl_restore;
183 static u32 dsi_get_bpp(const enum mipi_dsi_pixel_format fmt)
186 case MIPI_DSI_FMT_RGB565: return 16;
187 case MIPI_DSI_FMT_RGB666_PACKED: return 18;
188 case MIPI_DSI_FMT_RGB666:
189 case MIPI_DSI_FMT_RGB888:
194 static inline u32 dsi_read(struct msm_dsi_host *msm_host, u32 reg)
196 return msm_readl(msm_host->ctrl_base + reg);
198 static inline void dsi_write(struct msm_dsi_host *msm_host, u32 reg, u32 data)
200 msm_writel(data, msm_host->ctrl_base + reg);
203 static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host);
204 static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host);
206 static const struct msm_dsi_cfg_handler *dsi_get_config(
207 struct msm_dsi_host *msm_host)
209 const struct msm_dsi_cfg_handler *cfg_hnd = NULL;
210 struct device *dev = &msm_host->pdev->dev;
213 u32 major = 0, minor = 0;
215 ahb_clk = msm_clk_get(msm_host->pdev, "iface");
216 if (IS_ERR(ahb_clk)) {
217 pr_err("%s: cannot get interface clock\n", __func__);
221 pm_runtime_get_sync(dev);
223 ret = clk_prepare_enable(ahb_clk);
225 pr_err("%s: unable to enable ahb_clk\n", __func__);
229 ret = dsi_get_version(msm_host->ctrl_base, &major, &minor);
231 pr_err("%s: Invalid version\n", __func__);
235 cfg_hnd = msm_dsi_cfg_get(major, minor);
237 DBG("%s: Version %x:%x\n", __func__, major, minor);
240 clk_disable_unprepare(ahb_clk);
242 pm_runtime_put_sync(dev);
247 static inline struct msm_dsi_host *to_msm_dsi_host(struct mipi_dsi_host *host)
249 return container_of(host, struct msm_dsi_host, base);
252 static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host)
254 struct regulator_bulk_data *s = msm_host->supplies;
255 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
256 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
260 for (i = num - 1; i >= 0; i--)
261 if (regs[i].disable_load >= 0)
262 regulator_set_load(s[i].consumer,
263 regs[i].disable_load);
265 regulator_bulk_disable(num, s);
268 static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host)
270 struct regulator_bulk_data *s = msm_host->supplies;
271 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
272 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
276 for (i = 0; i < num; i++) {
277 if (regs[i].enable_load >= 0) {
278 ret = regulator_set_load(s[i].consumer,
279 regs[i].enable_load);
281 pr_err("regulator %d set op mode failed, %d\n",
288 ret = regulator_bulk_enable(num, s);
290 pr_err("regulator enable failed, %d\n", ret);
297 for (i--; i >= 0; i--)
298 regulator_set_load(s[i].consumer, regs[i].disable_load);
302 static int dsi_regulator_init(struct msm_dsi_host *msm_host)
304 struct regulator_bulk_data *s = msm_host->supplies;
305 const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs;
306 int num = msm_host->cfg_hnd->cfg->reg_cfg.num;
309 for (i = 0; i < num; i++)
310 s[i].supply = regs[i].name;
312 ret = devm_regulator_bulk_get(&msm_host->pdev->dev, num, s);
314 pr_err("%s: failed to init regulator, ret=%d\n",
322 int dsi_clk_init_v2(struct msm_dsi_host *msm_host)
324 struct platform_device *pdev = msm_host->pdev;
327 msm_host->src_clk = msm_clk_get(pdev, "src");
329 if (IS_ERR(msm_host->src_clk)) {
330 ret = PTR_ERR(msm_host->src_clk);
331 pr_err("%s: can't find src clock. ret=%d\n",
333 msm_host->src_clk = NULL;
337 msm_host->esc_clk_src = clk_get_parent(msm_host->esc_clk);
338 if (!msm_host->esc_clk_src) {
340 pr_err("%s: can't get esc clock parent. ret=%d\n",
345 msm_host->dsi_clk_src = clk_get_parent(msm_host->src_clk);
346 if (!msm_host->dsi_clk_src) {
348 pr_err("%s: can't get src clock parent. ret=%d\n",
355 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host)
357 struct platform_device *pdev = msm_host->pdev;
360 msm_host->byte_intf_clk = msm_clk_get(pdev, "byte_intf");
361 if (IS_ERR(msm_host->byte_intf_clk)) {
362 ret = PTR_ERR(msm_host->byte_intf_clk);
363 pr_err("%s: can't find byte_intf clock. ret=%d\n",
370 static int dsi_clk_init(struct msm_dsi_host *msm_host)
372 struct platform_device *pdev = msm_host->pdev;
373 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
374 const struct msm_dsi_config *cfg = cfg_hnd->cfg;
378 for (i = 0; i < cfg->num_bus_clks; i++)
379 msm_host->bus_clks[i].id = cfg->bus_clk_names[i];
380 msm_host->num_bus_clks = cfg->num_bus_clks;
382 ret = devm_clk_bulk_get(&pdev->dev, msm_host->num_bus_clks, msm_host->bus_clks);
384 dev_err(&pdev->dev, "Unable to get clocks, ret = %d\n", ret);
388 /* get link and source clocks */
389 msm_host->byte_clk = msm_clk_get(pdev, "byte");
390 if (IS_ERR(msm_host->byte_clk)) {
391 ret = PTR_ERR(msm_host->byte_clk);
392 pr_err("%s: can't find dsi_byte clock. ret=%d\n",
394 msm_host->byte_clk = NULL;
398 msm_host->pixel_clk = msm_clk_get(pdev, "pixel");
399 if (IS_ERR(msm_host->pixel_clk)) {
400 ret = PTR_ERR(msm_host->pixel_clk);
401 pr_err("%s: can't find dsi_pixel clock. ret=%d\n",
403 msm_host->pixel_clk = NULL;
407 msm_host->esc_clk = msm_clk_get(pdev, "core");
408 if (IS_ERR(msm_host->esc_clk)) {
409 ret = PTR_ERR(msm_host->esc_clk);
410 pr_err("%s: can't find dsi_esc clock. ret=%d\n",
412 msm_host->esc_clk = NULL;
416 msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk);
417 if (IS_ERR(msm_host->byte_clk_src)) {
418 ret = PTR_ERR(msm_host->byte_clk_src);
419 pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret);
423 msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk);
424 if (IS_ERR(msm_host->pixel_clk_src)) {
425 ret = PTR_ERR(msm_host->pixel_clk_src);
426 pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret);
430 if (cfg_hnd->ops->clk_init_ver)
431 ret = cfg_hnd->ops->clk_init_ver(msm_host);
436 int msm_dsi_runtime_suspend(struct device *dev)
438 struct platform_device *pdev = to_platform_device(dev);
439 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
440 struct mipi_dsi_host *host = msm_dsi->host;
441 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
443 if (!msm_host->cfg_hnd)
446 clk_bulk_disable_unprepare(msm_host->num_bus_clks, msm_host->bus_clks);
451 int msm_dsi_runtime_resume(struct device *dev)
453 struct platform_device *pdev = to_platform_device(dev);
454 struct msm_dsi *msm_dsi = platform_get_drvdata(pdev);
455 struct mipi_dsi_host *host = msm_dsi->host;
456 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
458 if (!msm_host->cfg_hnd)
461 return clk_bulk_prepare_enable(msm_host->num_bus_clks, msm_host->bus_clks);
464 int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host)
466 unsigned long byte_intf_rate;
469 DBG("Set clk rates: pclk=%d, byteclk=%lu",
470 msm_host->mode->clock, msm_host->byte_clk_rate);
472 ret = dev_pm_opp_set_rate(&msm_host->pdev->dev,
473 msm_host->byte_clk_rate);
475 pr_err("%s: dev_pm_opp_set_rate failed %d\n", __func__, ret);
479 ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate);
481 pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret);
485 if (msm_host->byte_intf_clk) {
486 /* For CPHY, byte_intf_clk is same as byte_clk */
487 if (msm_host->cphy_mode)
488 byte_intf_rate = msm_host->byte_clk_rate;
490 byte_intf_rate = msm_host->byte_clk_rate / 2;
492 ret = clk_set_rate(msm_host->byte_intf_clk, byte_intf_rate);
494 pr_err("%s: Failed to set rate byte intf clk, %d\n",
504 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host)
508 ret = clk_prepare_enable(msm_host->esc_clk);
510 pr_err("%s: Failed to enable dsi esc clk\n", __func__);
514 ret = clk_prepare_enable(msm_host->byte_clk);
516 pr_err("%s: Failed to enable dsi byte clk\n", __func__);
520 ret = clk_prepare_enable(msm_host->pixel_clk);
522 pr_err("%s: Failed to enable dsi pixel clk\n", __func__);
526 ret = clk_prepare_enable(msm_host->byte_intf_clk);
528 pr_err("%s: Failed to enable byte intf clk\n",
530 goto byte_intf_clk_err;
536 clk_disable_unprepare(msm_host->pixel_clk);
538 clk_disable_unprepare(msm_host->byte_clk);
540 clk_disable_unprepare(msm_host->esc_clk);
545 int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host)
549 DBG("Set clk rates: pclk=%d, byteclk=%lu, esc_clk=%lu, dsi_src_clk=%lu",
550 msm_host->mode->clock, msm_host->byte_clk_rate,
551 msm_host->esc_clk_rate, msm_host->src_clk_rate);
553 ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate);
555 pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret);
559 ret = clk_set_rate(msm_host->esc_clk, msm_host->esc_clk_rate);
561 pr_err("%s: Failed to set rate esc clk, %d\n", __func__, ret);
565 ret = clk_set_rate(msm_host->src_clk, msm_host->src_clk_rate);
567 pr_err("%s: Failed to set rate src clk, %d\n", __func__, ret);
571 ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate);
573 pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret);
580 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host)
584 ret = clk_prepare_enable(msm_host->byte_clk);
586 pr_err("%s: Failed to enable dsi byte clk\n", __func__);
590 ret = clk_prepare_enable(msm_host->esc_clk);
592 pr_err("%s: Failed to enable dsi esc clk\n", __func__);
596 ret = clk_prepare_enable(msm_host->src_clk);
598 pr_err("%s: Failed to enable dsi src clk\n", __func__);
602 ret = clk_prepare_enable(msm_host->pixel_clk);
604 pr_err("%s: Failed to enable dsi pixel clk\n", __func__);
611 clk_disable_unprepare(msm_host->src_clk);
613 clk_disable_unprepare(msm_host->esc_clk);
615 clk_disable_unprepare(msm_host->byte_clk);
620 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host)
622 /* Drop the performance state vote */
623 dev_pm_opp_set_rate(&msm_host->pdev->dev, 0);
624 clk_disable_unprepare(msm_host->esc_clk);
625 clk_disable_unprepare(msm_host->pixel_clk);
626 clk_disable_unprepare(msm_host->byte_intf_clk);
627 clk_disable_unprepare(msm_host->byte_clk);
630 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host)
632 clk_disable_unprepare(msm_host->pixel_clk);
633 clk_disable_unprepare(msm_host->src_clk);
634 clk_disable_unprepare(msm_host->esc_clk);
635 clk_disable_unprepare(msm_host->byte_clk);
638 static unsigned long dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
640 struct drm_display_mode *mode = msm_host->mode;
641 unsigned long pclk_rate;
643 pclk_rate = mode->clock * 1000;
646 * For bonded DSI mode, the current DRM mode has the complete width of the
647 * panel. Since, the complete panel is driven by two DSI controllers,
648 * the clock rates have to be split between the two dsi controllers.
649 * Adjust the byte and pixel clock rates for each dsi host accordingly.
657 static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
659 u8 lanes = msm_host->lanes;
660 u32 bpp = dsi_get_bpp(msm_host->format);
661 unsigned long pclk_rate = dsi_get_pclk_rate(msm_host, is_bonded_dsi);
662 u64 pclk_bpp = (u64)pclk_rate * bpp;
665 pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__);
669 /* CPHY "byte_clk" is in units of 16 bits */
670 if (msm_host->cphy_mode)
671 do_div(pclk_bpp, (16 * lanes));
673 do_div(pclk_bpp, (8 * lanes));
675 msm_host->pixel_clk_rate = pclk_rate;
676 msm_host->byte_clk_rate = pclk_bpp;
678 DBG("pclk=%lu, bclk=%lu", msm_host->pixel_clk_rate,
679 msm_host->byte_clk_rate);
683 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
685 if (!msm_host->mode) {
686 pr_err("%s: mode not set\n", __func__);
690 dsi_calc_pclk(msm_host, is_bonded_dsi);
691 msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk);
695 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
697 u32 bpp = dsi_get_bpp(msm_host->format);
699 unsigned int esc_mhz, esc_div;
700 unsigned long byte_mhz;
702 dsi_calc_pclk(msm_host, is_bonded_dsi);
704 pclk_bpp = (u64)dsi_get_pclk_rate(msm_host, is_bonded_dsi) * bpp;
706 msm_host->src_clk_rate = pclk_bpp;
709 * esc clock is byte clock followed by a 4 bit divider,
710 * we need to find an escape clock frequency within the
711 * mipi DSI spec range within the maximum divider limit
712 * We iterate here between an escape clock frequencey
713 * between 20 Mhz to 5 Mhz and pick up the first one
714 * that can be supported by our divider
717 byte_mhz = msm_host->byte_clk_rate / 1000000;
719 for (esc_mhz = 20; esc_mhz >= 5; esc_mhz--) {
720 esc_div = DIV_ROUND_UP(byte_mhz, esc_mhz);
723 * TODO: Ideally, we shouldn't know what sort of divider
724 * is available in mmss_cc, we're just assuming that
725 * it'll always be a 4 bit divider. Need to come up with
728 if (esc_div >= 1 && esc_div <= 16)
735 msm_host->esc_clk_rate = msm_host->byte_clk_rate / esc_div;
737 DBG("esc=%lu, src=%lu", msm_host->esc_clk_rate,
738 msm_host->src_clk_rate);
743 static void dsi_intr_ctrl(struct msm_dsi_host *msm_host, u32 mask, int enable)
748 spin_lock_irqsave(&msm_host->intr_lock, flags);
749 intr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
756 DBG("intr=%x enable=%d", intr, enable);
758 dsi_write(msm_host, REG_DSI_INTR_CTRL, intr);
759 spin_unlock_irqrestore(&msm_host->intr_lock, flags);
762 static inline enum dsi_traffic_mode dsi_get_traffic_mode(const u32 mode_flags)
764 if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
766 else if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
767 return NON_BURST_SYNCH_PULSE;
769 return NON_BURST_SYNCH_EVENT;
772 static inline enum dsi_vid_dst_format dsi_get_vid_fmt(
773 const enum mipi_dsi_pixel_format mipi_fmt)
776 case MIPI_DSI_FMT_RGB888: return VID_DST_FORMAT_RGB888;
777 case MIPI_DSI_FMT_RGB666: return VID_DST_FORMAT_RGB666_LOOSE;
778 case MIPI_DSI_FMT_RGB666_PACKED: return VID_DST_FORMAT_RGB666;
779 case MIPI_DSI_FMT_RGB565: return VID_DST_FORMAT_RGB565;
780 default: return VID_DST_FORMAT_RGB888;
784 static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt(
785 const enum mipi_dsi_pixel_format mipi_fmt)
788 case MIPI_DSI_FMT_RGB888: return CMD_DST_FORMAT_RGB888;
789 case MIPI_DSI_FMT_RGB666_PACKED:
790 case MIPI_DSI_FMT_RGB666: return CMD_DST_FORMAT_RGB666;
791 case MIPI_DSI_FMT_RGB565: return CMD_DST_FORMAT_RGB565;
792 default: return CMD_DST_FORMAT_RGB888;
796 static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
797 struct msm_dsi_phy_shared_timings *phy_shared_timings, struct msm_dsi_phy *phy)
799 u32 flags = msm_host->mode_flags;
800 enum mipi_dsi_pixel_format mipi_fmt = msm_host->format;
801 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
802 u32 data = 0, lane_ctrl = 0;
805 dsi_write(msm_host, REG_DSI_CTRL, 0);
809 if (flags & MIPI_DSI_MODE_VIDEO) {
810 if (flags & MIPI_DSI_MODE_VIDEO_HSE)
811 data |= DSI_VID_CFG0_PULSE_MODE_HSA_HE;
812 if (flags & MIPI_DSI_MODE_VIDEO_NO_HFP)
813 data |= DSI_VID_CFG0_HFP_POWER_STOP;
814 if (flags & MIPI_DSI_MODE_VIDEO_NO_HBP)
815 data |= DSI_VID_CFG0_HBP_POWER_STOP;
816 if (flags & MIPI_DSI_MODE_VIDEO_NO_HSA)
817 data |= DSI_VID_CFG0_HSA_POWER_STOP;
818 /* Always set low power stop mode for BLLP
819 * to let command engine send packets
821 data |= DSI_VID_CFG0_EOF_BLLP_POWER_STOP |
822 DSI_VID_CFG0_BLLP_POWER_STOP;
823 data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags));
824 data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt));
825 data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel);
826 dsi_write(msm_host, REG_DSI_VID_CFG0, data);
828 /* Do not swap RGB colors */
829 data = DSI_VID_CFG1_RGB_SWAP(SWAP_RGB);
830 dsi_write(msm_host, REG_DSI_VID_CFG1, 0);
832 /* Do not swap RGB colors */
833 data = DSI_CMD_CFG0_RGB_SWAP(SWAP_RGB);
834 data |= DSI_CMD_CFG0_DST_FORMAT(dsi_get_cmd_fmt(mipi_fmt));
835 dsi_write(msm_host, REG_DSI_CMD_CFG0, data);
837 data = DSI_CMD_CFG1_WR_MEM_START(MIPI_DCS_WRITE_MEMORY_START) |
838 DSI_CMD_CFG1_WR_MEM_CONTINUE(
839 MIPI_DCS_WRITE_MEMORY_CONTINUE);
840 /* Always insert DCS command */
841 data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND;
842 dsi_write(msm_host, REG_DSI_CMD_CFG1, data);
845 dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL,
846 DSI_CMD_DMA_CTRL_FROM_FRAME_BUFFER |
847 DSI_CMD_DMA_CTRL_LOW_POWER);
850 /* Always assume dedicated TE pin */
851 data |= DSI_TRIG_CTRL_TE;
852 data |= DSI_TRIG_CTRL_MDP_TRIGGER(TRIGGER_NONE);
853 data |= DSI_TRIG_CTRL_DMA_TRIGGER(TRIGGER_SW);
854 data |= DSI_TRIG_CTRL_STREAM(msm_host->channel);
855 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
856 (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_2))
857 data |= DSI_TRIG_CTRL_BLOCK_DMA_WITHIN_FRAME;
858 dsi_write(msm_host, REG_DSI_TRIG_CTRL, data);
860 data = DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(phy_shared_timings->clk_post) |
861 DSI_CLKOUT_TIMING_CTRL_T_CLK_PRE(phy_shared_timings->clk_pre);
862 dsi_write(msm_host, REG_DSI_CLKOUT_TIMING_CTRL, data);
864 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
865 (cfg_hnd->minor > MSM_DSI_6G_VER_MINOR_V1_0) &&
866 phy_shared_timings->clk_pre_inc_by_2)
867 dsi_write(msm_host, REG_DSI_T_CLK_PRE_EXTEND,
868 DSI_T_CLK_PRE_EXTEND_INC_BY_2_BYTECLK);
871 if (!(flags & MIPI_DSI_MODE_NO_EOT_PACKET))
872 data |= DSI_EOT_PACKET_CTRL_TX_EOT_APPEND;
873 dsi_write(msm_host, REG_DSI_EOT_PACKET_CTRL, data);
875 /* allow only ack-err-status to generate interrupt */
876 dsi_write(msm_host, REG_DSI_ERR_INT_MASK0, 0x13ff3fe0);
878 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1);
880 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
882 data = DSI_CTRL_CLK_EN;
884 DBG("lane number=%d", msm_host->lanes);
885 data |= ((DSI_CTRL_LANE0 << msm_host->lanes) - DSI_CTRL_LANE0);
887 dsi_write(msm_host, REG_DSI_LANE_SWAP_CTRL,
888 DSI_LANE_SWAP_CTRL_DLN_SWAP_SEL(msm_host->dlane_swap));
890 if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)) {
891 lane_ctrl = dsi_read(msm_host, REG_DSI_LANE_CTRL);
893 if (msm_dsi_phy_set_continuous_clock(phy, enable))
894 lane_ctrl &= ~DSI_LANE_CTRL_HS_REQ_SEL_PHY;
896 dsi_write(msm_host, REG_DSI_LANE_CTRL,
897 lane_ctrl | DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST);
900 data |= DSI_CTRL_ENABLE;
902 dsi_write(msm_host, REG_DSI_CTRL, data);
904 if (msm_host->cphy_mode)
905 dsi_write(msm_host, REG_DSI_CPHY_MODE_CTRL, BIT(0));
908 static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
910 struct drm_display_mode *mode = msm_host->mode;
911 u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */
912 u32 h_total = mode->htotal;
913 u32 v_total = mode->vtotal;
914 u32 hs_end = mode->hsync_end - mode->hsync_start;
915 u32 vs_end = mode->vsync_end - mode->vsync_start;
916 u32 ha_start = h_total - mode->hsync_start;
917 u32 ha_end = ha_start + mode->hdisplay;
918 u32 va_start = v_total - mode->vsync_start;
919 u32 va_end = va_start + mode->vdisplay;
920 u32 hdisplay = mode->hdisplay;
926 * For bonded DSI mode, the current DRM mode has
927 * the complete width of the panel. Since, the complete
928 * panel is driven by two DSI controllers, the horizontal
929 * timings have to be split between the two dsi controllers.
930 * Adjust the DSI host timing values accordingly.
940 if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) {
941 dsi_write(msm_host, REG_DSI_ACTIVE_H,
942 DSI_ACTIVE_H_START(ha_start) |
943 DSI_ACTIVE_H_END(ha_end));
944 dsi_write(msm_host, REG_DSI_ACTIVE_V,
945 DSI_ACTIVE_V_START(va_start) |
946 DSI_ACTIVE_V_END(va_end));
947 dsi_write(msm_host, REG_DSI_TOTAL,
948 DSI_TOTAL_H_TOTAL(h_total - 1) |
949 DSI_TOTAL_V_TOTAL(v_total - 1));
951 dsi_write(msm_host, REG_DSI_ACTIVE_HSYNC,
952 DSI_ACTIVE_HSYNC_START(hs_start) |
953 DSI_ACTIVE_HSYNC_END(hs_end));
954 dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_HPOS, 0);
955 dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_VPOS,
956 DSI_ACTIVE_VSYNC_VPOS_START(vs_start) |
957 DSI_ACTIVE_VSYNC_VPOS_END(vs_end));
958 } else { /* command mode */
959 /* image data and 1 byte write_memory_start cmd */
960 wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1;
962 dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM0_CTRL,
963 DSI_CMD_MDP_STREAM0_CTRL_WORD_COUNT(wc) |
964 DSI_CMD_MDP_STREAM0_CTRL_VIRTUAL_CHANNEL(
966 DSI_CMD_MDP_STREAM0_CTRL_DATA_TYPE(
967 MIPI_DSI_DCS_LONG_WRITE));
969 dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM0_TOTAL,
970 DSI_CMD_MDP_STREAM0_TOTAL_H_TOTAL(hdisplay) |
971 DSI_CMD_MDP_STREAM0_TOTAL_V_TOTAL(mode->vdisplay));
975 static void dsi_sw_reset(struct msm_dsi_host *msm_host)
977 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
978 wmb(); /* clocks need to be enabled before reset */
980 dsi_write(msm_host, REG_DSI_RESET, 1);
981 msleep(DSI_RESET_TOGGLE_DELAY_MS); /* make sure reset happen */
982 dsi_write(msm_host, REG_DSI_RESET, 0);
985 static void dsi_op_mode_config(struct msm_dsi_host *msm_host,
986 bool video_mode, bool enable)
990 dsi_ctrl = dsi_read(msm_host, REG_DSI_CTRL);
993 dsi_ctrl &= ~(DSI_CTRL_ENABLE | DSI_CTRL_VID_MODE_EN |
994 DSI_CTRL_CMD_MODE_EN);
995 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE |
996 DSI_IRQ_MASK_VIDEO_DONE, 0);
999 dsi_ctrl |= DSI_CTRL_VID_MODE_EN;
1000 } else { /* command mode */
1001 dsi_ctrl |= DSI_CTRL_CMD_MODE_EN;
1002 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE, 1);
1004 dsi_ctrl |= DSI_CTRL_ENABLE;
1007 dsi_write(msm_host, REG_DSI_CTRL, dsi_ctrl);
1010 static void dsi_set_tx_power_mode(int mode, struct msm_dsi_host *msm_host)
1014 data = dsi_read(msm_host, REG_DSI_CMD_DMA_CTRL);
1017 data &= ~DSI_CMD_DMA_CTRL_LOW_POWER;
1019 data |= DSI_CMD_DMA_CTRL_LOW_POWER;
1021 dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, data);
1024 static void dsi_wait4video_done(struct msm_dsi_host *msm_host)
1027 struct device *dev = &msm_host->pdev->dev;
1029 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 1);
1031 reinit_completion(&msm_host->video_comp);
1033 ret = wait_for_completion_timeout(&msm_host->video_comp,
1034 msecs_to_jiffies(70));
1037 DRM_DEV_ERROR(dev, "wait for video done timed out\n");
1039 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0);
1042 static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host)
1044 if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO))
1047 if (msm_host->power_on && msm_host->enabled) {
1048 dsi_wait4video_done(msm_host);
1049 /* delay 4 ms to skip BLLP */
1050 usleep_range(2000, 4000);
1054 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size)
1056 struct drm_device *dev = msm_host->dev;
1057 struct msm_drm_private *priv = dev->dev_private;
1061 data = msm_gem_kernel_new(dev, size, MSM_BO_WC,
1063 &msm_host->tx_gem_obj, &iova);
1066 msm_host->tx_gem_obj = NULL;
1067 return PTR_ERR(data);
1070 msm_gem_object_set_name(msm_host->tx_gem_obj, "tx_gem");
1072 msm_host->tx_size = msm_host->tx_gem_obj->size;
1077 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size)
1079 struct drm_device *dev = msm_host->dev;
1081 msm_host->tx_buf = dma_alloc_coherent(dev->dev, size,
1082 &msm_host->tx_buf_paddr, GFP_KERNEL);
1083 if (!msm_host->tx_buf)
1086 msm_host->tx_size = size;
1091 static void dsi_tx_buf_free(struct msm_dsi_host *msm_host)
1093 struct drm_device *dev = msm_host->dev;
1094 struct msm_drm_private *priv;
1097 * This is possible if we're tearing down before we've had a chance to
1098 * fully initialize. A very real possibility if our probe is deferred,
1099 * in which case we'll hit msm_dsi_host_destroy() without having run
1100 * through the dsi_tx_buf_alloc().
1105 priv = dev->dev_private;
1106 if (msm_host->tx_gem_obj) {
1107 msm_gem_unpin_iova(msm_host->tx_gem_obj, priv->kms->aspace);
1108 drm_gem_object_put(msm_host->tx_gem_obj);
1109 msm_host->tx_gem_obj = NULL;
1112 if (msm_host->tx_buf)
1113 dma_free_coherent(dev->dev, msm_host->tx_size, msm_host->tx_buf,
1114 msm_host->tx_buf_paddr);
1117 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host)
1119 return msm_gem_get_vaddr(msm_host->tx_gem_obj);
1122 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host)
1124 return msm_host->tx_buf;
1127 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host)
1129 msm_gem_put_vaddr(msm_host->tx_gem_obj);
1133 * prepare cmd buffer to be txed
1135 static int dsi_cmd_dma_add(struct msm_dsi_host *msm_host,
1136 const struct mipi_dsi_msg *msg)
1138 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1139 struct mipi_dsi_packet packet;
1144 ret = mipi_dsi_create_packet(&packet, msg);
1146 pr_err("%s: create packet failed, %d\n", __func__, ret);
1149 len = (packet.size + 3) & (~0x3);
1151 if (len > msm_host->tx_size) {
1152 pr_err("%s: packet size is too big\n", __func__);
1156 data = cfg_hnd->ops->tx_buf_get(msm_host);
1158 ret = PTR_ERR(data);
1159 pr_err("%s: get vaddr failed, %d\n", __func__, ret);
1163 /* MSM specific command format in memory */
1164 data[0] = packet.header[1];
1165 data[1] = packet.header[2];
1166 data[2] = packet.header[0];
1167 data[3] = BIT(7); /* Last packet */
1168 if (mipi_dsi_packet_format_is_long(msg->type))
1170 if (msg->rx_buf && msg->rx_len)
1174 if (packet.payload && packet.payload_length)
1175 memcpy(data + 4, packet.payload, packet.payload_length);
1177 /* Append 0xff to the end */
1178 if (packet.size < len)
1179 memset(data + packet.size, 0xff, len - packet.size);
1181 if (cfg_hnd->ops->tx_buf_put)
1182 cfg_hnd->ops->tx_buf_put(msm_host);
1188 * dsi_short_read1_resp: 1 parameter
1190 static int dsi_short_read1_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1192 u8 *data = msg->rx_buf;
1193 if (data && (msg->rx_len >= 1)) {
1194 *data = buf[1]; /* strip out dcs type */
1197 pr_err("%s: read data does not match with rx_buf len %zu\n",
1198 __func__, msg->rx_len);
1204 * dsi_short_read2_resp: 2 parameter
1206 static int dsi_short_read2_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1208 u8 *data = msg->rx_buf;
1209 if (data && (msg->rx_len >= 2)) {
1210 data[0] = buf[1]; /* strip out dcs type */
1214 pr_err("%s: read data does not match with rx_buf len %zu\n",
1215 __func__, msg->rx_len);
1220 static int dsi_long_read_resp(u8 *buf, const struct mipi_dsi_msg *msg)
1222 /* strip out 4 byte dcs header */
1223 if (msg->rx_buf && msg->rx_len)
1224 memcpy(msg->rx_buf, buf + 4, msg->rx_len);
1229 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *dma_base)
1231 struct drm_device *dev = msm_host->dev;
1232 struct msm_drm_private *priv = dev->dev_private;
1237 return msm_gem_get_and_pin_iova(msm_host->tx_gem_obj,
1238 priv->kms->aspace, dma_base);
1241 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *dma_base)
1246 *dma_base = msm_host->tx_buf_paddr;
1250 static int dsi_cmd_dma_tx(struct msm_dsi_host *msm_host, int len)
1252 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1257 ret = cfg_hnd->ops->dma_base_get(msm_host, &dma_base);
1259 pr_err("%s: failed to get iova: %d\n", __func__, ret);
1263 reinit_completion(&msm_host->dma_comp);
1265 dsi_wait4video_eng_busy(msm_host);
1267 triggered = msm_dsi_manager_cmd_xfer_trigger(
1268 msm_host->id, dma_base, len);
1270 ret = wait_for_completion_timeout(&msm_host->dma_comp,
1271 msecs_to_jiffies(200));
1283 static int dsi_cmd_dma_rx(struct msm_dsi_host *msm_host,
1284 u8 *buf, int rx_byte, int pkt_size)
1290 int repeated_bytes = 0;
1291 int buf_offset = buf - msm_host->rx_buf;
1294 cnt = (rx_byte + 3) >> 2;
1296 cnt = 4; /* 4 x 32 bits registers only */
1301 read_cnt = pkt_size + 6;
1304 * In case of multiple reads from the panel, after the first read, there
1305 * is possibility that there are some bytes in the payload repeating in
1306 * the RDBK_DATA registers. Since we read all the parameters from the
1307 * panel right from the first byte for every pass. We need to skip the
1308 * repeating bytes and then append the new parameters to the rx buffer.
1310 if (read_cnt > 16) {
1312 /* Any data more than 16 bytes will be shifted out.
1313 * The temp read buffer should already contain these bytes.
1314 * The remaining bytes in read buffer are the repeated bytes.
1316 bytes_shifted = read_cnt - 16;
1317 repeated_bytes = buf_offset - bytes_shifted;
1320 for (i = cnt - 1; i >= 0; i--) {
1321 data = dsi_read(msm_host, REG_DSI_RDBK_DATA(i));
1322 *temp++ = ntohl(data); /* to host byte order */
1323 DBG("data = 0x%x and ntohl(data) = 0x%x", data, ntohl(data));
1326 for (i = repeated_bytes; i < 16; i++)
1332 static int dsi_cmds2buf_tx(struct msm_dsi_host *msm_host,
1333 const struct mipi_dsi_msg *msg)
1336 int bllp_len = msm_host->mode->hdisplay *
1337 dsi_get_bpp(msm_host->format) / 8;
1339 len = dsi_cmd_dma_add(msm_host, msg);
1341 pr_err("%s: failed to add cmd type = 0x%x\n",
1342 __func__, msg->type);
1346 /* for video mode, do not send cmds more than
1347 * one pixel line, since it only transmit it
1350 /* TODO: if the command is sent in LP mode, the bit rate is only
1351 * half of esc clk rate. In this case, if the video is already
1352 * actively streaming, we need to check more carefully if the
1353 * command can be fit into one BLLP.
1355 if ((msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) && (len > bllp_len)) {
1356 pr_err("%s: cmd cannot fit into BLLP period, len=%d\n",
1361 ret = dsi_cmd_dma_tx(msm_host, len);
1363 pr_err("%s: cmd dma tx failed, type=0x%x, data0=0x%x, len=%d\n",
1364 __func__, msg->type, (*(u8 *)(msg->tx_buf)), len);
1371 static void dsi_sw_reset_restore(struct msm_dsi_host *msm_host)
1375 data0 = dsi_read(msm_host, REG_DSI_CTRL);
1377 data1 &= ~DSI_CTRL_ENABLE;
1378 dsi_write(msm_host, REG_DSI_CTRL, data1);
1380 * dsi controller need to be disabled before
1385 dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS);
1386 wmb(); /* make sure clocks enabled */
1388 /* dsi controller can only be reset while clocks are running */
1389 dsi_write(msm_host, REG_DSI_RESET, 1);
1390 msleep(DSI_RESET_TOGGLE_DELAY_MS); /* make sure reset happen */
1391 dsi_write(msm_host, REG_DSI_RESET, 0);
1392 wmb(); /* controller out of reset */
1393 dsi_write(msm_host, REG_DSI_CTRL, data0);
1394 wmb(); /* make sure dsi controller enabled again */
1397 static void dsi_hpd_worker(struct work_struct *work)
1399 struct msm_dsi_host *msm_host =
1400 container_of(work, struct msm_dsi_host, hpd_work);
1402 drm_helper_hpd_irq_event(msm_host->dev);
1405 static void dsi_err_worker(struct work_struct *work)
1407 struct msm_dsi_host *msm_host =
1408 container_of(work, struct msm_dsi_host, err_work);
1409 u32 status = msm_host->err_work_state;
1411 pr_err_ratelimited("%s: status=%x\n", __func__, status);
1412 if (status & DSI_ERR_STATE_MDP_FIFO_UNDERFLOW)
1413 dsi_sw_reset_restore(msm_host);
1415 /* It is safe to clear here because error irq is disabled. */
1416 msm_host->err_work_state = 0;
1418 /* enable dsi error interrupt */
1419 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1);
1422 static void dsi_ack_err_status(struct msm_dsi_host *msm_host)
1426 status = dsi_read(msm_host, REG_DSI_ACK_ERR_STATUS);
1429 dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, status);
1430 /* Writing of an extra 0 needed to clear error bits */
1431 dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, 0);
1432 msm_host->err_work_state |= DSI_ERR_STATE_ACK;
1436 static void dsi_timeout_status(struct msm_dsi_host *msm_host)
1440 status = dsi_read(msm_host, REG_DSI_TIMEOUT_STATUS);
1443 dsi_write(msm_host, REG_DSI_TIMEOUT_STATUS, status);
1444 msm_host->err_work_state |= DSI_ERR_STATE_TIMEOUT;
1448 static void dsi_dln0_phy_err(struct msm_dsi_host *msm_host)
1452 status = dsi_read(msm_host, REG_DSI_DLN0_PHY_ERR);
1454 if (status & (DSI_DLN0_PHY_ERR_DLN0_ERR_ESC |
1455 DSI_DLN0_PHY_ERR_DLN0_ERR_SYNC_ESC |
1456 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTROL |
1457 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP0 |
1458 DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP1)) {
1459 dsi_write(msm_host, REG_DSI_DLN0_PHY_ERR, status);
1460 msm_host->err_work_state |= DSI_ERR_STATE_DLN0_PHY;
1464 static void dsi_fifo_status(struct msm_dsi_host *msm_host)
1468 status = dsi_read(msm_host, REG_DSI_FIFO_STATUS);
1470 /* fifo underflow, overflow */
1472 dsi_write(msm_host, REG_DSI_FIFO_STATUS, status);
1473 msm_host->err_work_state |= DSI_ERR_STATE_FIFO;
1474 if (status & DSI_FIFO_STATUS_CMD_MDP_FIFO_UNDERFLOW)
1475 msm_host->err_work_state |=
1476 DSI_ERR_STATE_MDP_FIFO_UNDERFLOW;
1480 static void dsi_status(struct msm_dsi_host *msm_host)
1484 status = dsi_read(msm_host, REG_DSI_STATUS0);
1486 if (status & DSI_STATUS0_INTERLEAVE_OP_CONTENTION) {
1487 dsi_write(msm_host, REG_DSI_STATUS0, status);
1488 msm_host->err_work_state |=
1489 DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION;
1493 static void dsi_clk_status(struct msm_dsi_host *msm_host)
1497 status = dsi_read(msm_host, REG_DSI_CLK_STATUS);
1499 if (status & DSI_CLK_STATUS_PLL_UNLOCKED) {
1500 dsi_write(msm_host, REG_DSI_CLK_STATUS, status);
1501 msm_host->err_work_state |= DSI_ERR_STATE_PLL_UNLOCKED;
1505 static void dsi_error(struct msm_dsi_host *msm_host)
1507 /* disable dsi error interrupt */
1508 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 0);
1510 dsi_clk_status(msm_host);
1511 dsi_fifo_status(msm_host);
1512 dsi_ack_err_status(msm_host);
1513 dsi_timeout_status(msm_host);
1514 dsi_status(msm_host);
1515 dsi_dln0_phy_err(msm_host);
1517 queue_work(msm_host->workqueue, &msm_host->err_work);
1520 static irqreturn_t dsi_host_irq(int irq, void *ptr)
1522 struct msm_dsi_host *msm_host = ptr;
1524 unsigned long flags;
1526 if (!msm_host->ctrl_base)
1529 spin_lock_irqsave(&msm_host->intr_lock, flags);
1530 isr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
1531 dsi_write(msm_host, REG_DSI_INTR_CTRL, isr);
1532 spin_unlock_irqrestore(&msm_host->intr_lock, flags);
1534 DBG("isr=0x%x, id=%d", isr, msm_host->id);
1536 if (isr & DSI_IRQ_ERROR)
1537 dsi_error(msm_host);
1539 if (isr & DSI_IRQ_VIDEO_DONE)
1540 complete(&msm_host->video_comp);
1542 if (isr & DSI_IRQ_CMD_DMA_DONE)
1543 complete(&msm_host->dma_comp);
1548 static int dsi_host_init_panel_gpios(struct msm_dsi_host *msm_host,
1549 struct device *panel_device)
1551 msm_host->disp_en_gpio = devm_gpiod_get_optional(panel_device,
1554 if (IS_ERR(msm_host->disp_en_gpio)) {
1555 DBG("cannot get disp-enable-gpios %ld",
1556 PTR_ERR(msm_host->disp_en_gpio));
1557 return PTR_ERR(msm_host->disp_en_gpio);
1560 msm_host->te_gpio = devm_gpiod_get_optional(panel_device, "disp-te",
1562 if (IS_ERR(msm_host->te_gpio)) {
1563 DBG("cannot get disp-te-gpios %ld", PTR_ERR(msm_host->te_gpio));
1564 return PTR_ERR(msm_host->te_gpio);
1570 static int dsi_host_attach(struct mipi_dsi_host *host,
1571 struct mipi_dsi_device *dsi)
1573 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1576 if (dsi->lanes > msm_host->num_data_lanes)
1579 msm_host->channel = dsi->channel;
1580 msm_host->lanes = dsi->lanes;
1581 msm_host->format = dsi->format;
1582 msm_host->mode_flags = dsi->mode_flags;
1584 /* Some gpios defined in panel DT need to be controlled by host */
1585 ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev);
1589 ret = dsi_dev_attach(msm_host->pdev);
1593 DBG("id=%d", msm_host->id);
1595 queue_work(msm_host->workqueue, &msm_host->hpd_work);
1600 static int dsi_host_detach(struct mipi_dsi_host *host,
1601 struct mipi_dsi_device *dsi)
1603 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1605 dsi_dev_detach(msm_host->pdev);
1607 msm_host->device_node = NULL;
1609 DBG("id=%d", msm_host->id);
1611 queue_work(msm_host->workqueue, &msm_host->hpd_work);
1616 static ssize_t dsi_host_transfer(struct mipi_dsi_host *host,
1617 const struct mipi_dsi_msg *msg)
1619 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1622 if (!msg || !msm_host->power_on)
1625 mutex_lock(&msm_host->cmd_mutex);
1626 ret = msm_dsi_manager_cmd_xfer(msm_host->id, msg);
1627 mutex_unlock(&msm_host->cmd_mutex);
1632 static const struct mipi_dsi_host_ops dsi_host_ops = {
1633 .attach = dsi_host_attach,
1634 .detach = dsi_host_detach,
1635 .transfer = dsi_host_transfer,
1639 * List of supported physical to logical lane mappings.
1640 * For example, the 2nd entry represents the following mapping:
1642 * "3012": Logic 3->Phys 0; Logic 0->Phys 1; Logic 1->Phys 2; Logic 2->Phys 3;
1644 static const int supported_data_lane_swaps[][4] = {
1655 static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host,
1656 struct device_node *ep)
1658 struct device *dev = &msm_host->pdev->dev;
1659 struct property *prop;
1661 int ret, i, len, num_lanes;
1663 prop = of_find_property(ep, "data-lanes", &len);
1666 "failed to find data lane mapping, using default\n");
1667 /* Set the number of date lanes to 4 by default. */
1668 msm_host->num_data_lanes = 4;
1672 num_lanes = len / sizeof(u32);
1674 if (num_lanes < 1 || num_lanes > 4) {
1675 DRM_DEV_ERROR(dev, "bad number of data lanes\n");
1679 msm_host->num_data_lanes = num_lanes;
1681 ret = of_property_read_u32_array(ep, "data-lanes", lane_map,
1684 DRM_DEV_ERROR(dev, "failed to read lane data\n");
1689 * compare DT specified physical-logical lane mappings with the ones
1690 * supported by hardware
1692 for (i = 0; i < ARRAY_SIZE(supported_data_lane_swaps); i++) {
1693 const int *swap = supported_data_lane_swaps[i];
1697 * the data-lanes array we get from DT has a logical->physical
1698 * mapping. The "data lane swap" register field represents
1699 * supported configurations in a physical->logical mapping.
1700 * Translate the DT mapping to what we understand and find a
1701 * configuration that works.
1703 for (j = 0; j < num_lanes; j++) {
1704 if (lane_map[j] < 0 || lane_map[j] > 3)
1705 DRM_DEV_ERROR(dev, "bad physical lane entry %u\n",
1708 if (swap[lane_map[j]] != j)
1712 if (j == num_lanes) {
1713 msm_host->dlane_swap = i;
1721 static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
1723 struct device *dev = &msm_host->pdev->dev;
1724 struct device_node *np = dev->of_node;
1725 struct device_node *endpoint, *device_node;
1729 * Get the endpoint of the output port of the DSI host. In our case,
1730 * this is mapped to port number with reg = 1. Don't return an error if
1731 * the remote endpoint isn't defined. It's possible that there is
1732 * nothing connected to the dsi output.
1734 endpoint = of_graph_get_endpoint_by_regs(np, 1, -1);
1736 DRM_DEV_DEBUG(dev, "%s: no endpoint\n", __func__);
1740 ret = dsi_host_parse_lane_data(msm_host, endpoint);
1742 DRM_DEV_ERROR(dev, "%s: invalid lane configuration %d\n",
1748 /* Get panel node from the output port's endpoint data */
1749 device_node = of_graph_get_remote_node(np, 1, 0);
1751 DRM_DEV_DEBUG(dev, "%s: no valid device\n", __func__);
1756 msm_host->device_node = device_node;
1758 if (of_property_read_bool(np, "syscon-sfpb")) {
1759 msm_host->sfpb = syscon_regmap_lookup_by_phandle(np,
1761 if (IS_ERR(msm_host->sfpb)) {
1762 DRM_DEV_ERROR(dev, "%s: failed to get sfpb regmap\n",
1764 ret = PTR_ERR(msm_host->sfpb);
1768 of_node_put(device_node);
1771 of_node_put(endpoint);
1776 static int dsi_host_get_id(struct msm_dsi_host *msm_host)
1778 struct platform_device *pdev = msm_host->pdev;
1779 const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
1780 struct resource *res;
1783 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dsi_ctrl");
1787 for (i = 0; i < cfg->num_dsi; i++) {
1788 if (cfg->io_start[i] == res->start)
1795 int msm_dsi_host_init(struct msm_dsi *msm_dsi)
1797 struct msm_dsi_host *msm_host = NULL;
1798 struct platform_device *pdev = msm_dsi->pdev;
1801 msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL);
1807 msm_host->pdev = pdev;
1808 msm_dsi->host = &msm_host->base;
1810 ret = dsi_host_parse_dt(msm_host);
1812 pr_err("%s: failed to parse dt\n", __func__);
1816 msm_host->ctrl_base = msm_ioremap_size(pdev, "dsi_ctrl", "DSI CTRL", &msm_host->ctrl_size);
1817 if (IS_ERR(msm_host->ctrl_base)) {
1818 pr_err("%s: unable to map Dsi ctrl base\n", __func__);
1819 ret = PTR_ERR(msm_host->ctrl_base);
1823 pm_runtime_enable(&pdev->dev);
1825 msm_host->cfg_hnd = dsi_get_config(msm_host);
1826 if (!msm_host->cfg_hnd) {
1828 pr_err("%s: get config failed\n", __func__);
1832 msm_host->id = dsi_host_get_id(msm_host);
1833 if (msm_host->id < 0) {
1835 pr_err("%s: unable to identify DSI host index\n", __func__);
1839 /* fixup base address by io offset */
1840 msm_host->ctrl_base += msm_host->cfg_hnd->cfg->io_offset;
1842 ret = dsi_regulator_init(msm_host);
1844 pr_err("%s: regulator init failed\n", __func__);
1848 ret = dsi_clk_init(msm_host);
1850 pr_err("%s: unable to initialize dsi clks\n", __func__);
1854 msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL);
1855 if (!msm_host->rx_buf) {
1857 pr_err("%s: alloc rx temp buf failed\n", __func__);
1861 ret = devm_pm_opp_set_clkname(&pdev->dev, "byte");
1864 /* OPP table is optional */
1865 ret = devm_pm_opp_of_add_table(&pdev->dev);
1866 if (ret && ret != -ENODEV) {
1867 dev_err(&pdev->dev, "invalid OPP table in device tree\n");
1871 msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
1872 if (msm_host->irq < 0) {
1873 ret = msm_host->irq;
1874 dev_err(&pdev->dev, "failed to get irq: %d\n", ret);
1878 /* do not autoenable, will be enabled later */
1879 ret = devm_request_irq(&pdev->dev, msm_host->irq, dsi_host_irq,
1880 IRQF_TRIGGER_HIGH | IRQF_ONESHOT | IRQF_NO_AUTOEN,
1881 "dsi_isr", msm_host);
1883 dev_err(&pdev->dev, "failed to request IRQ%u: %d\n",
1884 msm_host->irq, ret);
1888 init_completion(&msm_host->dma_comp);
1889 init_completion(&msm_host->video_comp);
1890 mutex_init(&msm_host->dev_mutex);
1891 mutex_init(&msm_host->cmd_mutex);
1892 spin_lock_init(&msm_host->intr_lock);
1894 /* setup workqueue */
1895 msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0);
1896 INIT_WORK(&msm_host->err_work, dsi_err_worker);
1897 INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker);
1899 msm_dsi->id = msm_host->id;
1901 DBG("Dsi Host %d initialized", msm_host->id);
1908 void msm_dsi_host_destroy(struct mipi_dsi_host *host)
1910 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1913 dsi_tx_buf_free(msm_host);
1914 if (msm_host->workqueue) {
1915 destroy_workqueue(msm_host->workqueue);
1916 msm_host->workqueue = NULL;
1919 mutex_destroy(&msm_host->cmd_mutex);
1920 mutex_destroy(&msm_host->dev_mutex);
1922 pm_runtime_disable(&msm_host->pdev->dev);
1925 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
1926 struct drm_device *dev)
1928 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1929 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1932 msm_host->dev = dev;
1933 ret = cfg_hnd->ops->tx_buf_alloc(msm_host, SZ_4K);
1935 pr_err("%s: alloc tx gem obj failed, %d\n", __func__, ret);
1942 int msm_dsi_host_register(struct mipi_dsi_host *host)
1944 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1947 /* Register mipi dsi host */
1948 if (!msm_host->registered) {
1949 host->dev = &msm_host->pdev->dev;
1950 host->ops = &dsi_host_ops;
1951 ret = mipi_dsi_host_register(host);
1955 msm_host->registered = true;
1961 void msm_dsi_host_unregister(struct mipi_dsi_host *host)
1963 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1965 if (msm_host->registered) {
1966 mipi_dsi_host_unregister(host);
1969 msm_host->registered = false;
1973 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
1974 const struct mipi_dsi_msg *msg)
1976 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
1977 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
1979 /* TODO: make sure dsi_cmd_mdp is idle.
1980 * Since DSI6G v1.2.0, we can set DSI_TRIG_CTRL.BLOCK_DMA_WITHIN_FRAME
1981 * to ask H/W to wait until cmd mdp is idle. S/W wait is not needed.
1982 * How to handle the old versions? Wait for mdp cmd done?
1986 * mdss interrupt is generated in mdp core clock domain
1987 * mdp clock need to be enabled to receive dsi interrupt
1989 pm_runtime_get_sync(&msm_host->pdev->dev);
1990 cfg_hnd->ops->link_clk_set_rate(msm_host);
1991 cfg_hnd->ops->link_clk_enable(msm_host);
1993 /* TODO: vote for bus bandwidth */
1995 if (!(msg->flags & MIPI_DSI_MSG_USE_LPM))
1996 dsi_set_tx_power_mode(0, msm_host);
1998 msm_host->dma_cmd_ctrl_restore = dsi_read(msm_host, REG_DSI_CTRL);
1999 dsi_write(msm_host, REG_DSI_CTRL,
2000 msm_host->dma_cmd_ctrl_restore |
2001 DSI_CTRL_CMD_MODE_EN |
2003 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 1);
2008 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
2009 const struct mipi_dsi_msg *msg)
2011 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2012 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2014 dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 0);
2015 dsi_write(msm_host, REG_DSI_CTRL, msm_host->dma_cmd_ctrl_restore);
2017 if (!(msg->flags & MIPI_DSI_MSG_USE_LPM))
2018 dsi_set_tx_power_mode(1, msm_host);
2020 /* TODO: unvote for bus bandwidth */
2022 cfg_hnd->ops->link_clk_disable(msm_host);
2023 pm_runtime_put(&msm_host->pdev->dev);
2026 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
2027 const struct mipi_dsi_msg *msg)
2029 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2031 return dsi_cmds2buf_tx(msm_host, msg);
2034 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
2035 const struct mipi_dsi_msg *msg)
2037 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2038 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2039 int data_byte, rx_byte, dlen, end;
2040 int short_response, diff, pkt_size, ret = 0;
2042 int rlen = msg->rx_len;
2051 data_byte = 10; /* first read */
2052 if (rlen < data_byte)
2055 pkt_size = data_byte;
2056 rx_byte = data_byte + 6; /* 4 header + 2 crc */
2059 buf = msm_host->rx_buf;
2062 u8 tx[2] = {pkt_size & 0xff, pkt_size >> 8};
2063 struct mipi_dsi_msg max_pkt_size_msg = {
2064 .channel = msg->channel,
2065 .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
2070 DBG("rlen=%d pkt_size=%d rx_byte=%d",
2071 rlen, pkt_size, rx_byte);
2073 ret = dsi_cmds2buf_tx(msm_host, &max_pkt_size_msg);
2075 pr_err("%s: Set max pkt size failed, %d\n",
2080 if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) &&
2081 (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_1)) {
2082 /* Clear the RDBK_DATA registers */
2083 dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL,
2084 DSI_RDBK_DATA_CTRL_CLR);
2085 wmb(); /* make sure the RDBK registers are cleared */
2086 dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, 0);
2087 wmb(); /* release cleared status before transfer */
2090 ret = dsi_cmds2buf_tx(msm_host, msg);
2091 if (ret < msg->tx_len) {
2092 pr_err("%s: Read cmd Tx failed, %d\n", __func__, ret);
2097 * once cmd_dma_done interrupt received,
2098 * return data from client is ready and stored
2099 * at RDBK_DATA register already
2100 * since rx fifo is 16 bytes, dcs header is kept at first loop,
2101 * after that dcs header lost during shift into registers
2103 dlen = dsi_cmd_dma_rx(msm_host, buf, rx_byte, pkt_size);
2111 if (rlen <= data_byte) {
2112 diff = data_byte - rlen;
2120 dlen -= 2; /* 2 crc */
2122 buf += dlen; /* next start position */
2123 data_byte = 14; /* NOT first read */
2124 if (rlen < data_byte)
2127 pkt_size += data_byte;
2128 DBG("buf=%p dlen=%d diff=%d", buf, dlen, diff);
2133 * For single Long read, if the requested rlen < 10,
2134 * we need to shift the start position of rx
2135 * data buffer to skip the bytes which are not
2138 if (pkt_size < 10 && !short_response)
2139 buf = msm_host->rx_buf + (10 - rlen);
2141 buf = msm_host->rx_buf;
2145 case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT:
2146 pr_err("%s: rx ACK_ERR_PACLAGE\n", __func__);
2149 case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE:
2150 case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE:
2151 ret = dsi_short_read1_resp(buf, msg);
2153 case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE:
2154 case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE:
2155 ret = dsi_short_read2_resp(buf, msg);
2157 case MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE:
2158 case MIPI_DSI_RX_DCS_LONG_READ_RESPONSE:
2159 ret = dsi_long_read_resp(buf, msg);
2162 pr_warn("%s:Invalid response cmd\n", __func__);
2169 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, u32 dma_base,
2172 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2174 dsi_write(msm_host, REG_DSI_DMA_BASE, dma_base);
2175 dsi_write(msm_host, REG_DSI_DMA_LEN, len);
2176 dsi_write(msm_host, REG_DSI_TRIG_DMA, 1);
2178 /* Make sure trigger happens */
2182 void msm_dsi_host_set_phy_mode(struct mipi_dsi_host *host,
2183 struct msm_dsi_phy *src_phy)
2185 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2187 msm_host->cphy_mode = src_phy->cphy_mode;
2190 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host)
2192 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2195 dsi_write(msm_host, REG_DSI_PHY_RESET, DSI_PHY_RESET_RESET);
2196 /* Make sure fully reset */
2199 dsi_write(msm_host, REG_DSI_PHY_RESET, 0);
2203 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
2204 struct msm_dsi_phy_clk_request *clk_req,
2207 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2208 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2211 ret = cfg_hnd->ops->calc_clk_rate(msm_host, is_bonded_dsi);
2213 pr_err("%s: unable to calc clk rate, %d\n", __func__, ret);
2217 /* CPHY transmits 16 bits over 7 clock cycles
2218 * "byte_clk" is in units of 16-bits (see dsi_calc_pclk),
2219 * so multiply by 7 to get the "bitclk rate"
2221 if (msm_host->cphy_mode)
2222 clk_req->bitclk_rate = msm_host->byte_clk_rate * 7;
2224 clk_req->bitclk_rate = msm_host->byte_clk_rate * 8;
2225 clk_req->escclk_rate = msm_host->esc_clk_rate;
2228 void msm_dsi_host_enable_irq(struct mipi_dsi_host *host)
2230 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2232 enable_irq(msm_host->irq);
2235 void msm_dsi_host_disable_irq(struct mipi_dsi_host *host)
2237 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2239 disable_irq(msm_host->irq);
2242 int msm_dsi_host_enable(struct mipi_dsi_host *host)
2244 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2246 dsi_op_mode_config(msm_host,
2247 !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), true);
2249 /* TODO: clock should be turned off for command mode,
2250 * and only turned on before MDP START.
2251 * This part of code should be enabled once mdp driver support it.
2253 /* if (msm_panel->mode == MSM_DSI_CMD_MODE) {
2254 * dsi_link_clk_disable(msm_host);
2255 * pm_runtime_put(&msm_host->pdev->dev);
2258 msm_host->enabled = true;
2262 int msm_dsi_host_disable(struct mipi_dsi_host *host)
2264 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2266 msm_host->enabled = false;
2267 dsi_op_mode_config(msm_host,
2268 !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), false);
2270 /* Since we have disabled INTF, the video engine won't stop so that
2271 * the cmd engine will be blocked.
2272 * Reset to disable video engine so that we can send off cmd.
2274 dsi_sw_reset(msm_host);
2279 static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable)
2281 enum sfpb_ahb_arb_master_port_en en;
2283 if (!msm_host->sfpb)
2286 en = enable ? SFPB_MASTER_PORT_ENABLE : SFPB_MASTER_PORT_DISABLE;
2288 regmap_update_bits(msm_host->sfpb, REG_SFPB_GPREG,
2289 SFPB_GPREG_MASTER_PORT_EN__MASK,
2290 SFPB_GPREG_MASTER_PORT_EN(en));
2293 int msm_dsi_host_power_on(struct mipi_dsi_host *host,
2294 struct msm_dsi_phy_shared_timings *phy_shared_timings,
2295 bool is_bonded_dsi, struct msm_dsi_phy *phy)
2297 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2298 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2301 mutex_lock(&msm_host->dev_mutex);
2302 if (msm_host->power_on) {
2303 DBG("dsi host already on");
2307 msm_dsi_sfpb_config(msm_host, true);
2309 ret = dsi_host_regulator_enable(msm_host);
2311 pr_err("%s:Failed to enable vregs.ret=%d\n",
2316 pm_runtime_get_sync(&msm_host->pdev->dev);
2317 ret = cfg_hnd->ops->link_clk_set_rate(msm_host);
2319 ret = cfg_hnd->ops->link_clk_enable(msm_host);
2321 pr_err("%s: failed to enable link clocks. ret=%d\n",
2323 goto fail_disable_reg;
2326 ret = pinctrl_pm_select_default_state(&msm_host->pdev->dev);
2328 pr_err("%s: failed to set pinctrl default state, %d\n",
2330 goto fail_disable_clk;
2333 dsi_timing_setup(msm_host, is_bonded_dsi);
2334 dsi_sw_reset(msm_host);
2335 dsi_ctrl_config(msm_host, true, phy_shared_timings, phy);
2337 if (msm_host->disp_en_gpio)
2338 gpiod_set_value(msm_host->disp_en_gpio, 1);
2340 msm_host->power_on = true;
2341 mutex_unlock(&msm_host->dev_mutex);
2346 cfg_hnd->ops->link_clk_disable(msm_host);
2347 pm_runtime_put(&msm_host->pdev->dev);
2349 dsi_host_regulator_disable(msm_host);
2351 mutex_unlock(&msm_host->dev_mutex);
2355 int msm_dsi_host_power_off(struct mipi_dsi_host *host)
2357 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2358 const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
2360 mutex_lock(&msm_host->dev_mutex);
2361 if (!msm_host->power_on) {
2362 DBG("dsi host already off");
2366 dsi_ctrl_config(msm_host, false, NULL, NULL);
2368 if (msm_host->disp_en_gpio)
2369 gpiod_set_value(msm_host->disp_en_gpio, 0);
2371 pinctrl_pm_select_sleep_state(&msm_host->pdev->dev);
2373 cfg_hnd->ops->link_clk_disable(msm_host);
2374 pm_runtime_put(&msm_host->pdev->dev);
2376 dsi_host_regulator_disable(msm_host);
2378 msm_dsi_sfpb_config(msm_host, false);
2382 msm_host->power_on = false;
2385 mutex_unlock(&msm_host->dev_mutex);
2389 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
2390 const struct drm_display_mode *mode)
2392 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2394 if (msm_host->mode) {
2395 drm_mode_destroy(msm_host->dev, msm_host->mode);
2396 msm_host->mode = NULL;
2399 msm_host->mode = drm_mode_duplicate(msm_host->dev, mode);
2400 if (!msm_host->mode) {
2401 pr_err("%s: cannot duplicate mode\n", __func__);
2408 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host)
2410 return of_drm_find_panel(to_msm_dsi_host(host)->device_node);
2413 unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host)
2415 return to_msm_dsi_host(host)->mode_flags;
2418 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host)
2420 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2422 return of_drm_find_bridge(msm_host->device_node);
2425 void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host)
2427 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2429 pm_runtime_get_sync(&msm_host->pdev->dev);
2431 msm_disp_snapshot_add_block(disp_state, msm_host->ctrl_size,
2432 msm_host->ctrl_base, "dsi%d_ctrl", msm_host->id);
2434 pm_runtime_put_sync(&msm_host->pdev->dev);
2437 static void msm_dsi_host_video_test_pattern_setup(struct msm_dsi_host *msm_host)
2441 reg = dsi_read(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL);
2443 dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_VIDEO_INIT_VAL, 0xff);
2444 /* draw checkered rectangle pattern */
2445 dsi_write(msm_host, REG_DSI_TPG_MAIN_CONTROL,
2446 DSI_TPG_MAIN_CONTROL_CHECKERED_RECTANGLE_PATTERN);
2447 /* use 24-bit RGB test pttern */
2448 dsi_write(msm_host, REG_DSI_TPG_VIDEO_CONFIG,
2449 DSI_TPG_VIDEO_CONFIG_BPP(VIDEO_CONFIG_24BPP) |
2450 DSI_TPG_VIDEO_CONFIG_RGB);
2452 reg |= DSI_TEST_PATTERN_GEN_CTRL_VIDEO_PATTERN_SEL(VID_MDSS_GENERAL_PATTERN);
2453 dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL, reg);
2455 DBG("Video test pattern setup done\n");
2458 static void msm_dsi_host_cmd_test_pattern_setup(struct msm_dsi_host *msm_host)
2462 reg = dsi_read(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL);
2464 /* initial value for test pattern */
2465 dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CMD_MDP_INIT_VAL0, 0xff);
2467 reg |= DSI_TEST_PATTERN_GEN_CTRL_CMD_MDP_STREAM0_PATTERN_SEL(CMD_MDP_MDSS_GENERAL_PATTERN);
2469 dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL, reg);
2470 /* draw checkered rectangle pattern */
2471 dsi_write(msm_host, REG_DSI_TPG_MAIN_CONTROL2,
2472 DSI_TPG_MAIN_CONTROL2_CMD_MDP0_CHECKERED_RECTANGLE_PATTERN);
2474 DBG("Cmd test pattern setup done\n");
2477 void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host)
2479 struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
2480 bool is_video_mode = !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO);
2484 msm_dsi_host_video_test_pattern_setup(msm_host);
2486 msm_dsi_host_cmd_test_pattern_setup(msm_host);
2488 reg = dsi_read(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL);
2489 /* enable the test pattern generator */
2490 dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CTRL, (reg | DSI_TEST_PATTERN_GEN_CTRL_EN));
2492 /* for command mode need to trigger one frame from tpg */
2494 dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER,
2495 DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER_SW_TRIGGER);