| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hai Li | 7063 | 67.50% | 9 | 13.64% |
| Archit Taneja | 2251 | 21.51% | 27 | 40.91% |
| Sibi Sankar | 774 | 7.40% | 2 | 3.03% |
| Sean Paul | 154 | 1.47% | 3 | 4.55% |
| Chandan Uddaraju | 60 | 0.57% | 1 | 1.52% |
| Abhinav Kumar | 56 | 0.54% | 3 | 4.55% |
| Rob Clark | 36 | 0.34% | 6 | 9.09% |
| Daniel Mack | 12 | 0.11% | 1 | 1.52% |
| Jordan Crouse | 11 | 0.11% | 3 | 4.55% |
| Mamta Shukla | 11 | 0.11% | 1 | 1.52% |
| Uwe Kleine-König | 9 | 0.09% | 1 | 1.52% |
| Wei Yongjun | 8 | 0.08% | 2 | 3.03% |
| Rob Herring | 6 | 0.06% | 1 | 1.52% |
| Brian Norris | 3 | 0.03% | 1 | 1.52% |
| Boris Brezillon | 3 | 0.03% | 1 | 1.52% |
| Dave Airlie | 3 | 0.03% | 1 | 1.52% |
| Stephane Viau | 2 | 0.02% | 1 | 1.52% |
| Fabian Frederick | 1 | 0.01% | 1 | 1.52% |
| Stefan Agner | 1 | 0.01% | 1 | 1.52% |
| Total | 10464 | 66 |
/* * Copyright (c) 2015, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/gpio.h> #include <linux/gpio/consumer.h> #include <linux/interrupt.h> #include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/of_irq.h> #include <linux/pinctrl/consumer.h> #include <linux/of_graph.h> #include <linux/regulator/consumer.h> #include <linux/spinlock.h> #include <linux/mfd/syscon.h> #include <linux/regmap.h> #include <video/mipi_display.h> #include "dsi.h" #include "dsi.xml.h" #include "sfpb.xml.h" #include "dsi_cfg.h" #include "msm_kms.h" static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor) { u32 ver; if (!major || !minor) return -EINVAL; /* * From DSI6G(v3), addition of a 6G_HW_VERSION register at offset 0 * makes all other registers 4-byte shifted down. * * In order to identify between DSI6G(v3) and beyond, and DSIv2 and * older, we read the DSI_VERSION register without any shift(offset * 0x1f0). In the case of DSIv2, this hast to be a non-zero value. In * the case of DSI6G, this has to be zero (the offset points to a * scratch register which we never touch) */ ver = msm_readl(base + REG_DSI_VERSION); if (ver) { /* older dsi host, there is no register shift */ ver = FIELD(ver, DSI_VERSION_MAJOR); if (ver <= MSM_DSI_VER_MAJOR_V2) { /* old versions */ *major = ver; *minor = 0; return 0; } else { return -EINVAL; } } else { /* * newer host, offset 0 has 6G_HW_VERSION, the rest of the * registers are shifted down, read DSI_VERSION again with * the shifted offset */ ver = msm_readl(base + DSI_6G_REG_SHIFT + REG_DSI_VERSION); ver = FIELD(ver, DSI_VERSION_MAJOR); if (ver == MSM_DSI_VER_MAJOR_6G) { /* 6G version */ *major = ver; *minor = msm_readl(base + REG_DSI_6G_HW_VERSION); return 0; } else { return -EINVAL; } } } #define DSI_ERR_STATE_ACK 0x0000 #define DSI_ERR_STATE_TIMEOUT 0x0001 #define DSI_ERR_STATE_DLN0_PHY 0x0002 #define DSI_ERR_STATE_FIFO 0x0004 #define DSI_ERR_STATE_MDP_FIFO_UNDERFLOW 0x0008 #define DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION 0x0010 #define DSI_ERR_STATE_PLL_UNLOCKED 0x0020 #define DSI_CLK_CTRL_ENABLE_CLKS \ (DSI_CLK_CTRL_AHBS_HCLK_ON | DSI_CLK_CTRL_AHBM_SCLK_ON | \ DSI_CLK_CTRL_PCLK_ON | DSI_CLK_CTRL_DSICLK_ON | \ DSI_CLK_CTRL_BYTECLK_ON | DSI_CLK_CTRL_ESCCLK_ON | \ DSI_CLK_CTRL_FORCE_ON_DYN_AHBM_HCLK) struct msm_dsi_host { struct mipi_dsi_host base; struct platform_device *pdev; struct drm_device *dev; int id; void __iomem *ctrl_base; struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX]; struct clk *bus_clks[DSI_BUS_CLK_MAX]; struct clk *byte_clk; struct clk *esc_clk; struct clk *pixel_clk; struct clk *byte_clk_src; struct clk *pixel_clk_src; struct clk *byte_intf_clk; u32 byte_clk_rate; u32 pixel_clk_rate; u32 esc_clk_rate; /* DSI v2 specific clocks */ struct clk *src_clk; struct clk *esc_clk_src; struct clk *dsi_clk_src; u32 src_clk_rate; struct gpio_desc *disp_en_gpio; struct gpio_desc *te_gpio; const struct msm_dsi_cfg_handler *cfg_hnd; struct completion dma_comp; struct completion video_comp; struct mutex dev_mutex; struct mutex cmd_mutex; spinlock_t intr_lock; /* Protect interrupt ctrl register */ u32 err_work_state; struct work_struct err_work; struct work_struct hpd_work; struct workqueue_struct *workqueue; /* DSI 6G TX buffer*/ struct drm_gem_object *tx_gem_obj; /* DSI v2 TX buffer */ void *tx_buf; dma_addr_t tx_buf_paddr; int tx_size; u8 *rx_buf; struct regmap *sfpb; struct drm_display_mode *mode; /* connected device info */ struct device_node *device_node; unsigned int channel; unsigned int lanes; enum mipi_dsi_pixel_format format; unsigned long mode_flags; /* lane data parsed via DT */ int dlane_swap; int num_data_lanes; u32 dma_cmd_ctrl_restore; bool registered; bool power_on; bool enabled; int irq; }; static u32 dsi_get_bpp(const enum mipi_dsi_pixel_format fmt) { switch (fmt) { case MIPI_DSI_FMT_RGB565: return 16; case MIPI_DSI_FMT_RGB666_PACKED: return 18; case MIPI_DSI_FMT_RGB666: case MIPI_DSI_FMT_RGB888: default: return 24; } } static inline u32 dsi_read(struct msm_dsi_host *msm_host, u32 reg) { return msm_readl(msm_host->ctrl_base + reg); } static inline void dsi_write(struct msm_dsi_host *msm_host, u32 reg, u32 data) { msm_writel(data, msm_host->ctrl_base + reg); } static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host); static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host); static const struct msm_dsi_cfg_handler *dsi_get_config( struct msm_dsi_host *msm_host) { const struct msm_dsi_cfg_handler *cfg_hnd = NULL; struct device *dev = &msm_host->pdev->dev; struct regulator *gdsc_reg; struct clk *ahb_clk; int ret; u32 major = 0, minor = 0; gdsc_reg = regulator_get(dev, "gdsc"); if (IS_ERR(gdsc_reg)) { pr_err("%s: cannot get gdsc\n", __func__); goto exit; } ahb_clk = msm_clk_get(msm_host->pdev, "iface"); if (IS_ERR(ahb_clk)) { pr_err("%s: cannot get interface clock\n", __func__); goto put_gdsc; } pm_runtime_get_sync(dev); ret = regulator_enable(gdsc_reg); if (ret) { pr_err("%s: unable to enable gdsc\n", __func__); goto put_gdsc; } ret = clk_prepare_enable(ahb_clk); if (ret) { pr_err("%s: unable to enable ahb_clk\n", __func__); goto disable_gdsc; } ret = dsi_get_version(msm_host->ctrl_base, &major, &minor); if (ret) { pr_err("%s: Invalid version\n", __func__); goto disable_clks; } cfg_hnd = msm_dsi_cfg_get(major, minor); DBG("%s: Version %x:%x\n", __func__, major, minor); disable_clks: clk_disable_unprepare(ahb_clk); disable_gdsc: regulator_disable(gdsc_reg); pm_runtime_put_sync(dev); put_gdsc: regulator_put(gdsc_reg); exit: return cfg_hnd; } static inline struct msm_dsi_host *to_msm_dsi_host(struct mipi_dsi_host *host) { return container_of(host, struct msm_dsi_host, base); } static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host) { struct regulator_bulk_data *s = msm_host->supplies; const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs; int num = msm_host->cfg_hnd->cfg->reg_cfg.num; int i; DBG(""); for (i = num - 1; i >= 0; i--) if (regs[i].disable_load >= 0) regulator_set_load(s[i].consumer, regs[i].disable_load); regulator_bulk_disable(num, s); } static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host) { struct regulator_bulk_data *s = msm_host->supplies; const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs; int num = msm_host->cfg_hnd->cfg->reg_cfg.num; int ret, i; DBG(""); for (i = 0; i < num; i++) { if (regs[i].enable_load >= 0) { ret = regulator_set_load(s[i].consumer, regs[i].enable_load); if (ret < 0) { pr_err("regulator %d set op mode failed, %d\n", i, ret); goto fail; } } } ret = regulator_bulk_enable(num, s); if (ret < 0) { pr_err("regulator enable failed, %d\n", ret); goto fail; } return 0; fail: for (i--; i >= 0; i--) regulator_set_load(s[i].consumer, regs[i].disable_load); return ret; } static int dsi_regulator_init(struct msm_dsi_host *msm_host) { struct regulator_bulk_data *s = msm_host->supplies; const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs; int num = msm_host->cfg_hnd->cfg->reg_cfg.num; int i, ret; for (i = 0; i < num; i++) s[i].supply = regs[i].name; ret = devm_regulator_bulk_get(&msm_host->pdev->dev, num, s); if (ret < 0) { pr_err("%s: failed to init regulator, ret=%d\n", __func__, ret); return ret; } return 0; } int dsi_clk_init_v2(struct msm_dsi_host *msm_host) { struct platform_device *pdev = msm_host->pdev; int ret = 0; msm_host->src_clk = msm_clk_get(pdev, "src"); if (IS_ERR(msm_host->src_clk)) { ret = PTR_ERR(msm_host->src_clk); pr_err("%s: can't find src clock. ret=%d\n", __func__, ret); msm_host->src_clk = NULL; return ret; } msm_host->esc_clk_src = clk_get_parent(msm_host->esc_clk); if (!msm_host->esc_clk_src) { ret = -ENODEV; pr_err("%s: can't get esc clock parent. ret=%d\n", __func__, ret); return ret; } msm_host->dsi_clk_src = clk_get_parent(msm_host->src_clk); if (!msm_host->dsi_clk_src) { ret = -ENODEV; pr_err("%s: can't get src clock parent. ret=%d\n", __func__, ret); } return ret; } int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host) { struct platform_device *pdev = msm_host->pdev; int ret = 0; msm_host->byte_intf_clk = msm_clk_get(pdev, "byte_intf"); if (IS_ERR(msm_host->byte_intf_clk)) { ret = PTR_ERR(msm_host->byte_intf_clk); pr_err("%s: can't find byte_intf clock. ret=%d\n", __func__, ret); } return ret; } static int dsi_clk_init(struct msm_dsi_host *msm_host) { struct platform_device *pdev = msm_host->pdev; const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; const struct msm_dsi_config *cfg = cfg_hnd->cfg; int i, ret = 0; /* get bus clocks */ for (i = 0; i < cfg->num_bus_clks; i++) { msm_host->bus_clks[i] = msm_clk_get(pdev, cfg->bus_clk_names[i]); if (IS_ERR(msm_host->bus_clks[i])) { ret = PTR_ERR(msm_host->bus_clks[i]); pr_err("%s: Unable to get %s clock, ret = %d\n", __func__, cfg->bus_clk_names[i], ret); goto exit; } } /* get link and source clocks */ msm_host->byte_clk = msm_clk_get(pdev, "byte"); if (IS_ERR(msm_host->byte_clk)) { ret = PTR_ERR(msm_host->byte_clk); pr_err("%s: can't find dsi_byte clock. ret=%d\n", __func__, ret); msm_host->byte_clk = NULL; goto exit; } msm_host->pixel_clk = msm_clk_get(pdev, "pixel"); if (IS_ERR(msm_host->pixel_clk)) { ret = PTR_ERR(msm_host->pixel_clk); pr_err("%s: can't find dsi_pixel clock. ret=%d\n", __func__, ret); msm_host->pixel_clk = NULL; goto exit; } msm_host->esc_clk = msm_clk_get(pdev, "core"); if (IS_ERR(msm_host->esc_clk)) { ret = PTR_ERR(msm_host->esc_clk); pr_err("%s: can't find dsi_esc clock. ret=%d\n", __func__, ret); msm_host->esc_clk = NULL; goto exit; } msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk); if (!msm_host->byte_clk_src) { ret = -ENODEV; pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret); goto exit; } msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk); if (!msm_host->pixel_clk_src) { ret = -ENODEV; pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret); goto exit; } if (cfg_hnd->ops->clk_init_ver) ret = cfg_hnd->ops->clk_init_ver(msm_host); exit: return ret; } static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host) { const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg; int i, ret; DBG("id=%d", msm_host->id); for (i = 0; i < cfg->num_bus_clks; i++) { ret = clk_prepare_enable(msm_host->bus_clks[i]); if (ret) { pr_err("%s: failed to enable bus clock %d ret %d\n", __func__, i, ret); goto err; } } return 0; err: for (; i > 0; i--) clk_disable_unprepare(msm_host->bus_clks[i]); return ret; } static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host) { const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg; int i; DBG(""); for (i = cfg->num_bus_clks - 1; i >= 0; i--) clk_disable_unprepare(msm_host->bus_clks[i]); } int msm_dsi_runtime_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct msm_dsi *msm_dsi = platform_get_drvdata(pdev); struct mipi_dsi_host *host = msm_dsi->host; struct msm_dsi_host *msm_host = to_msm_dsi_host(host); if (!msm_host->cfg_hnd) return 0; dsi_bus_clk_disable(msm_host); return 0; } int msm_dsi_runtime_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct msm_dsi *msm_dsi = platform_get_drvdata(pdev); struct mipi_dsi_host *host = msm_dsi->host; struct msm_dsi_host *msm_host = to_msm_dsi_host(host); if (!msm_host->cfg_hnd) return 0; return dsi_bus_clk_enable(msm_host); } int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host) { int ret; DBG("Set clk rates: pclk=%d, byteclk=%d", msm_host->mode->clock, msm_host->byte_clk_rate); ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate); if (ret) { pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret); goto error; } ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate); if (ret) { pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); goto error; } if (msm_host->byte_intf_clk) { ret = clk_set_rate(msm_host->byte_intf_clk, msm_host->byte_clk_rate / 2); if (ret) { pr_err("%s: Failed to set rate byte intf clk, %d\n", __func__, ret); goto error; } } ret = clk_prepare_enable(msm_host->esc_clk); if (ret) { pr_err("%s: Failed to enable dsi esc clk\n", __func__); goto error; } ret = clk_prepare_enable(msm_host->byte_clk); if (ret) { pr_err("%s: Failed to enable dsi byte clk\n", __func__); goto byte_clk_err; } ret = clk_prepare_enable(msm_host->pixel_clk); if (ret) { pr_err("%s: Failed to enable dsi pixel clk\n", __func__); goto pixel_clk_err; } if (msm_host->byte_intf_clk) { ret = clk_prepare_enable(msm_host->byte_intf_clk); if (ret) { pr_err("%s: Failed to enable byte intf clk\n", __func__); goto byte_intf_clk_err; } } return 0; byte_intf_clk_err: clk_disable_unprepare(msm_host->pixel_clk); pixel_clk_err: clk_disable_unprepare(msm_host->byte_clk); byte_clk_err: clk_disable_unprepare(msm_host->esc_clk); error: return ret; } int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host) { int ret; DBG("Set clk rates: pclk=%d, byteclk=%d, esc_clk=%d, dsi_src_clk=%d", msm_host->mode->clock, msm_host->byte_clk_rate, msm_host->esc_clk_rate, msm_host->src_clk_rate); ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate); if (ret) { pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret); goto error; } ret = clk_set_rate(msm_host->esc_clk, msm_host->esc_clk_rate); if (ret) { pr_err("%s: Failed to set rate esc clk, %d\n", __func__, ret); goto error; } ret = clk_set_rate(msm_host->src_clk, msm_host->src_clk_rate); if (ret) { pr_err("%s: Failed to set rate src clk, %d\n", __func__, ret); goto error; } ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate); if (ret) { pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); goto error; } ret = clk_prepare_enable(msm_host->byte_clk); if (ret) { pr_err("%s: Failed to enable dsi byte clk\n", __func__); goto error; } ret = clk_prepare_enable(msm_host->esc_clk); if (ret) { pr_err("%s: Failed to enable dsi esc clk\n", __func__); goto esc_clk_err; } ret = clk_prepare_enable(msm_host->src_clk); if (ret) { pr_err("%s: Failed to enable dsi src clk\n", __func__); goto src_clk_err; } ret = clk_prepare_enable(msm_host->pixel_clk); if (ret) { pr_err("%s: Failed to enable dsi pixel clk\n", __func__); goto pixel_clk_err; } return 0; pixel_clk_err: clk_disable_unprepare(msm_host->src_clk); src_clk_err: clk_disable_unprepare(msm_host->esc_clk); esc_clk_err: clk_disable_unprepare(msm_host->byte_clk); error: return ret; } void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host) { clk_disable_unprepare(msm_host->esc_clk); clk_disable_unprepare(msm_host->pixel_clk); if (msm_host->byte_intf_clk) clk_disable_unprepare(msm_host->byte_intf_clk); clk_disable_unprepare(msm_host->byte_clk); } void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host) { clk_disable_unprepare(msm_host->pixel_clk); clk_disable_unprepare(msm_host->src_clk); clk_disable_unprepare(msm_host->esc_clk); clk_disable_unprepare(msm_host->byte_clk); } static u32 dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_dual_dsi) { struct drm_display_mode *mode = msm_host->mode; u32 pclk_rate; pclk_rate = mode->clock * 1000; /* * For dual DSI mode, the current DRM mode has the complete width of the * panel. Since, the complete panel is driven by two DSI controllers, * the clock rates have to be split between the two dsi controllers. * Adjust the byte and pixel clock rates for each dsi host accordingly. */ if (is_dual_dsi) pclk_rate /= 2; return pclk_rate; } static void dsi_calc_pclk(struct msm_dsi_host *msm_host, bool is_dual_dsi) { u8 lanes = msm_host->lanes; u32 bpp = dsi_get_bpp(msm_host->format); u32 pclk_rate = dsi_get_pclk_rate(msm_host, is_dual_dsi); u64 pclk_bpp = (u64)pclk_rate * bpp; if (lanes == 0) { pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__); lanes = 1; } do_div(pclk_bpp, (8 * lanes)); msm_host->pixel_clk_rate = pclk_rate; msm_host->byte_clk_rate = pclk_bpp; DBG("pclk=%d, bclk=%d", msm_host->pixel_clk_rate, msm_host->byte_clk_rate); } int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi) { if (!msm_host->mode) { pr_err("%s: mode not set\n", __func__); return -EINVAL; } dsi_calc_pclk(msm_host, is_dual_dsi); msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk); return 0; } int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi) { u32 bpp = dsi_get_bpp(msm_host->format); u64 pclk_bpp; unsigned int esc_mhz, esc_div; unsigned long byte_mhz; dsi_calc_pclk(msm_host, is_dual_dsi); pclk_bpp = (u64)dsi_get_pclk_rate(msm_host, is_dual_dsi) * bpp; do_div(pclk_bpp, 8); msm_host->src_clk_rate = pclk_bpp; /* * esc clock is byte clock followed by a 4 bit divider, * we need to find an escape clock frequency within the * mipi DSI spec range within the maximum divider limit * We iterate here between an escape clock frequencey * between 20 Mhz to 5 Mhz and pick up the first one * that can be supported by our divider */ byte_mhz = msm_host->byte_clk_rate / 1000000; for (esc_mhz = 20; esc_mhz >= 5; esc_mhz--) { esc_div = DIV_ROUND_UP(byte_mhz, esc_mhz); /* * TODO: Ideally, we shouldn't know what sort of divider * is available in mmss_cc, we're just assuming that * it'll always be a 4 bit divider. Need to come up with * a better way here. */ if (esc_div >= 1 && esc_div <= 16) break; } if (esc_mhz < 5) return -EINVAL; msm_host->esc_clk_rate = msm_host->byte_clk_rate / esc_div; DBG("esc=%d, src=%d", msm_host->esc_clk_rate, msm_host->src_clk_rate); return 0; } static void dsi_intr_ctrl(struct msm_dsi_host *msm_host, u32 mask, int enable) { u32 intr; unsigned long flags; spin_lock_irqsave(&msm_host->intr_lock, flags); intr = dsi_read(msm_host, REG_DSI_INTR_CTRL); if (enable) intr |= mask; else intr &= ~mask; DBG("intr=%x enable=%d", intr, enable); dsi_write(msm_host, REG_DSI_INTR_CTRL, intr); spin_unlock_irqrestore(&msm_host->intr_lock, flags); } static inline enum dsi_traffic_mode dsi_get_traffic_mode(const u32 mode_flags) { if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST) return BURST_MODE; else if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) return NON_BURST_SYNCH_PULSE; return NON_BURST_SYNCH_EVENT; } static inline enum dsi_vid_dst_format dsi_get_vid_fmt( const enum mipi_dsi_pixel_format mipi_fmt) { switch (mipi_fmt) { case MIPI_DSI_FMT_RGB888: return VID_DST_FORMAT_RGB888; case MIPI_DSI_FMT_RGB666: return VID_DST_FORMAT_RGB666_LOOSE; case MIPI_DSI_FMT_RGB666_PACKED: return VID_DST_FORMAT_RGB666; case MIPI_DSI_FMT_RGB565: return VID_DST_FORMAT_RGB565; default: return VID_DST_FORMAT_RGB888; } } static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt( const enum mipi_dsi_pixel_format mipi_fmt) { switch (mipi_fmt) { case MIPI_DSI_FMT_RGB888: return CMD_DST_FORMAT_RGB888; case MIPI_DSI_FMT_RGB666_PACKED: case MIPI_DSI_FMT_RGB666: return CMD_DST_FORMAT_RGB666; case MIPI_DSI_FMT_RGB565: return CMD_DST_FORMAT_RGB565; default: return CMD_DST_FORMAT_RGB888; } } static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable, struct msm_dsi_phy_shared_timings *phy_shared_timings) { u32 flags = msm_host->mode_flags; enum mipi_dsi_pixel_format mipi_fmt = msm_host->format; const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; u32 data = 0; if (!enable) { dsi_write(msm_host, REG_DSI_CTRL, 0); return; } if (flags & MIPI_DSI_MODE_VIDEO) { if (flags & MIPI_DSI_MODE_VIDEO_HSE) data |= DSI_VID_CFG0_PULSE_MODE_HSA_HE; if (flags & MIPI_DSI_MODE_VIDEO_HFP) data |= DSI_VID_CFG0_HFP_POWER_STOP; if (flags & MIPI_DSI_MODE_VIDEO_HBP) data |= DSI_VID_CFG0_HBP_POWER_STOP; if (flags & MIPI_DSI_MODE_VIDEO_HSA) data |= DSI_VID_CFG0_HSA_POWER_STOP; /* Always set low power stop mode for BLLP * to let command engine send packets */ data |= DSI_VID_CFG0_EOF_BLLP_POWER_STOP | DSI_VID_CFG0_BLLP_POWER_STOP; data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags)); data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt)); data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel); dsi_write(msm_host, REG_DSI_VID_CFG0, data); /* Do not swap RGB colors */ data = DSI_VID_CFG1_RGB_SWAP(SWAP_RGB); dsi_write(msm_host, REG_DSI_VID_CFG1, 0); } else { /* Do not swap RGB colors */ data = DSI_CMD_CFG0_RGB_SWAP(SWAP_RGB); data |= DSI_CMD_CFG0_DST_FORMAT(dsi_get_cmd_fmt(mipi_fmt)); dsi_write(msm_host, REG_DSI_CMD_CFG0, data); data = DSI_CMD_CFG1_WR_MEM_START(MIPI_DCS_WRITE_MEMORY_START) | DSI_CMD_CFG1_WR_MEM_CONTINUE( MIPI_DCS_WRITE_MEMORY_CONTINUE); /* Always insert DCS command */ data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND; dsi_write(msm_host, REG_DSI_CMD_CFG1, data); } dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, DSI_CMD_DMA_CTRL_FROM_FRAME_BUFFER | DSI_CMD_DMA_CTRL_LOW_POWER); data = 0; /* Always assume dedicated TE pin */ data |= DSI_TRIG_CTRL_TE; data |= DSI_TRIG_CTRL_MDP_TRIGGER(TRIGGER_NONE); data |= DSI_TRIG_CTRL_DMA_TRIGGER(TRIGGER_SW); data |= DSI_TRIG_CTRL_STREAM(msm_host->channel); if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) && (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_2)) data |= DSI_TRIG_CTRL_BLOCK_DMA_WITHIN_FRAME; dsi_write(msm_host, REG_DSI_TRIG_CTRL, data); data = DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(phy_shared_timings->clk_post) | DSI_CLKOUT_TIMING_CTRL_T_CLK_PRE(phy_shared_timings->clk_pre); dsi_write(msm_host, REG_DSI_CLKOUT_TIMING_CTRL, data); if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) && (cfg_hnd->minor > MSM_DSI_6G_VER_MINOR_V1_0) && phy_shared_timings->clk_pre_inc_by_2) dsi_write(msm_host, REG_DSI_T_CLK_PRE_EXTEND, DSI_T_CLK_PRE_EXTEND_INC_BY_2_BYTECLK); data = 0; if (!(flags & MIPI_DSI_MODE_EOT_PACKET)) data |= DSI_EOT_PACKET_CTRL_TX_EOT_APPEND; dsi_write(msm_host, REG_DSI_EOT_PACKET_CTRL, data); /* allow only ack-err-status to generate interrupt */ dsi_write(msm_host, REG_DSI_ERR_INT_MASK0, 0x13ff3fe0); dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1); dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS); data = DSI_CTRL_CLK_EN; DBG("lane number=%d", msm_host->lanes); data |= ((DSI_CTRL_LANE0 << msm_host->lanes) - DSI_CTRL_LANE0); dsi_write(msm_host, REG_DSI_LANE_SWAP_CTRL, DSI_LANE_SWAP_CTRL_DLN_SWAP_SEL(msm_host->dlane_swap)); if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)) dsi_write(msm_host, REG_DSI_LANE_CTRL, DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST); data |= DSI_CTRL_ENABLE; dsi_write(msm_host, REG_DSI_CTRL, data); } static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_dual_dsi) { struct drm_display_mode *mode = msm_host->mode; u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */ u32 h_total = mode->htotal; u32 v_total = mode->vtotal; u32 hs_end = mode->hsync_end - mode->hsync_start; u32 vs_end = mode->vsync_end - mode->vsync_start; u32 ha_start = h_total - mode->hsync_start; u32 ha_end = ha_start + mode->hdisplay; u32 va_start = v_total - mode->vsync_start; u32 va_end = va_start + mode->vdisplay; u32 hdisplay = mode->hdisplay; u32 wc; DBG(""); /* * For dual DSI mode, the current DRM mode has * the complete width of the panel. Since, the complete * panel is driven by two DSI controllers, the horizontal * timings have to be split between the two dsi controllers. * Adjust the DSI host timing values accordingly. */ if (is_dual_dsi) { h_total /= 2; hs_end /= 2; ha_start /= 2; ha_end /= 2; hdisplay /= 2; } if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) { dsi_write(msm_host, REG_DSI_ACTIVE_H, DSI_ACTIVE_H_START(ha_start) | DSI_ACTIVE_H_END(ha_end)); dsi_write(msm_host, REG_DSI_ACTIVE_V, DSI_ACTIVE_V_START(va_start) | DSI_ACTIVE_V_END(va_end)); dsi_write(msm_host, REG_DSI_TOTAL, DSI_TOTAL_H_TOTAL(h_total - 1) | DSI_TOTAL_V_TOTAL(v_total - 1)); dsi_write(msm_host, REG_DSI_ACTIVE_HSYNC, DSI_ACTIVE_HSYNC_START(hs_start) | DSI_ACTIVE_HSYNC_END(hs_end)); dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_HPOS, 0); dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_VPOS, DSI_ACTIVE_VSYNC_VPOS_START(vs_start) | DSI_ACTIVE_VSYNC_VPOS_END(vs_end)); } else { /* command mode */ /* image data and 1 byte write_memory_start cmd */ wc = hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1; dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_CTRL, DSI_CMD_MDP_STREAM_CTRL_WORD_COUNT(wc) | DSI_CMD_MDP_STREAM_CTRL_VIRTUAL_CHANNEL( msm_host->channel) | DSI_CMD_MDP_STREAM_CTRL_DATA_TYPE( MIPI_DSI_DCS_LONG_WRITE)); dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_TOTAL, DSI_CMD_MDP_STREAM_TOTAL_H_TOTAL(hdisplay) | DSI_CMD_MDP_STREAM_TOTAL_V_TOTAL(mode->vdisplay)); } } static void dsi_sw_reset(struct msm_dsi_host *msm_host) { dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS); wmb(); /* clocks need to be enabled before reset */ dsi_write(msm_host, REG_DSI_RESET, 1); wmb(); /* make sure reset happen */ dsi_write(msm_host, REG_DSI_RESET, 0); } static void dsi_op_mode_config(struct msm_dsi_host *msm_host, bool video_mode, bool enable) { u32 dsi_ctrl; dsi_ctrl = dsi_read(msm_host, REG_DSI_CTRL); if (!enable) { dsi_ctrl &= ~(DSI_CTRL_ENABLE | DSI_CTRL_VID_MODE_EN | DSI_CTRL_CMD_MODE_EN); dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE | DSI_IRQ_MASK_VIDEO_DONE, 0); } else { if (video_mode) { dsi_ctrl |= DSI_CTRL_VID_MODE_EN; } else { /* command mode */ dsi_ctrl |= DSI_CTRL_CMD_MODE_EN; dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE, 1); } dsi_ctrl |= DSI_CTRL_ENABLE; } dsi_write(msm_host, REG_DSI_CTRL, dsi_ctrl); } static void dsi_set_tx_power_mode(int mode, struct msm_dsi_host *msm_host) { u32 data; data = dsi_read(msm_host, REG_DSI_CMD_DMA_CTRL); if (mode == 0) data &= ~DSI_CMD_DMA_CTRL_LOW_POWER; else data |= DSI_CMD_DMA_CTRL_LOW_POWER; dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, data); } static void dsi_wait4video_done(struct msm_dsi_host *msm_host) { u32 ret = 0; struct device *dev = &msm_host->pdev->dev; dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 1); reinit_completion(&msm_host->video_comp); ret = wait_for_completion_timeout(&msm_host->video_comp, msecs_to_jiffies(70)); if (ret <= 0) DRM_DEV_ERROR(dev, "wait for video done timed out\n"); dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0); } static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host) { if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO)) return; if (msm_host->power_on && msm_host->enabled) { dsi_wait4video_done(msm_host); /* delay 4 ms to skip BLLP */ usleep_range(2000, 4000); } } int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size) { struct drm_device *dev = msm_host->dev; struct msm_drm_private *priv = dev->dev_private; uint64_t iova; u8 *data; data = msm_gem_kernel_new(dev, size, MSM_BO_UNCACHED, priv->kms->aspace, &msm_host->tx_gem_obj, &iova); if (IS_ERR(data)) { msm_host->tx_gem_obj = NULL; return PTR_ERR(data); } msm_gem_object_set_name(msm_host->tx_gem_obj, "tx_gem"); msm_host->tx_size = msm_host->tx_gem_obj->size; return 0; } int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size) { struct drm_device *dev = msm_host->dev; msm_host->tx_buf = dma_alloc_coherent(dev->dev, size, &msm_host->tx_buf_paddr, GFP_KERNEL); if (!msm_host->tx_buf) return -ENOMEM; msm_host->tx_size = size; return 0; } static void dsi_tx_buf_free(struct msm_dsi_host *msm_host) { struct drm_device *dev = msm_host->dev; struct msm_drm_private *priv; /* * This is possible if we're tearing down before we've had a chance to * fully initialize. A very real possibility if our probe is deferred, * in which case we'll hit msm_dsi_host_destroy() without having run * through the dsi_tx_buf_alloc(). */ if (!dev) return; priv = dev->dev_private; if (msm_host->tx_gem_obj) { msm_gem_unpin_iova(msm_host->tx_gem_obj, priv->kms->aspace); drm_gem_object_put_unlocked(msm_host->tx_gem_obj); msm_host->tx_gem_obj = NULL; } if (msm_host->tx_buf) dma_free_coherent(dev->dev, msm_host->tx_size, msm_host->tx_buf, msm_host->tx_buf_paddr); } void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host) { return msm_gem_get_vaddr(msm_host->tx_gem_obj); } void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host) { return msm_host->tx_buf; } void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host) { msm_gem_put_vaddr(msm_host->tx_gem_obj); } /* * prepare cmd buffer to be txed */ static int dsi_cmd_dma_add(struct msm_dsi_host *msm_host, const struct mipi_dsi_msg *msg) { const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; struct mipi_dsi_packet packet; int len; int ret; u8 *data; ret = mipi_dsi_create_packet(&packet, msg); if (ret) { pr_err("%s: create packet failed, %d\n", __func__, ret); return ret; } len = (packet.size + 3) & (~0x3); if (len > msm_host->tx_size) { pr_err("%s: packet size is too big\n", __func__); return -EINVAL; } data = cfg_hnd->ops->tx_buf_get(msm_host); if (IS_ERR(data)) { ret = PTR_ERR(data); pr_err("%s: get vaddr failed, %d\n", __func__, ret); return ret; } /* MSM specific command format in memory */ data[0] = packet.header[1]; data[1] = packet.header[2]; data[2] = packet.header[0]; data[3] = BIT(7); /* Last packet */ if (mipi_dsi_packet_format_is_long(msg->type)) data[3] |= BIT(6); if (msg->rx_buf && msg->rx_len) data[3] |= BIT(5); /* Long packet */ if (packet.payload && packet.payload_length) memcpy(data + 4, packet.payload, packet.payload_length); /* Append 0xff to the end */ if (packet.size < len) memset(data + packet.size, 0xff, len - packet.size); if (cfg_hnd->ops->tx_buf_put) cfg_hnd->ops->tx_buf_put(msm_host); return len; } /* * dsi_short_read1_resp: 1 parameter */ static int dsi_short_read1_resp(u8 *buf, const struct mipi_dsi_msg *msg) { u8 *data = msg->rx_buf; if (data && (msg->rx_len >= 1)) { *data = buf[1]; /* strip out dcs type */ return 1; } else { pr_err("%s: read data does not match with rx_buf len %zu\n", __func__, msg->rx_len); return -EINVAL; } } /* * dsi_short_read2_resp: 2 parameter */ static int dsi_short_read2_resp(u8 *buf, const struct mipi_dsi_msg *msg) { u8 *data = msg->rx_buf; if (data && (msg->rx_len >= 2)) { data[0] = buf[1]; /* strip out dcs type */ data[1] = buf[2]; return 2; } else { pr_err("%s: read data does not match with rx_buf len %zu\n", __func__, msg->rx_len); return -EINVAL; } } static int dsi_long_read_resp(u8 *buf, const struct mipi_dsi_msg *msg) { /* strip out 4 byte dcs header */ if (msg->rx_buf && msg->rx_len) memcpy(msg->rx_buf, buf + 4, msg->rx_len); return msg->rx_len; } int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *dma_base) { struct drm_device *dev = msm_host->dev; struct msm_drm_private *priv = dev->dev_private; if (!dma_base) return -EINVAL; return msm_gem_get_and_pin_iova(msm_host->tx_gem_obj, priv->kms->aspace, dma_base); } int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *dma_base) { if (!dma_base) return -EINVAL; *dma_base = msm_host->tx_buf_paddr; return 0; } static int dsi_cmd_dma_tx(struct msm_dsi_host *msm_host, int len) { const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; int ret; uint64_t dma_base; bool triggered; ret = cfg_hnd->ops->dma_base_get(msm_host, &dma_base); if (ret) { pr_err("%s: failed to get iova: %d\n", __func__, ret); return ret; } reinit_completion(&msm_host->dma_comp); dsi_wait4video_eng_busy(msm_host); triggered = msm_dsi_manager_cmd_xfer_trigger( msm_host->id, dma_base, len); if (triggered) { ret = wait_for_completion_timeout(&msm_host->dma_comp, msecs_to_jiffies(200)); DBG("ret=%d", ret); if (ret == 0) ret = -ETIMEDOUT; else ret = len; } else ret = len; return ret; } static int dsi_cmd_dma_rx(struct msm_dsi_host *msm_host, u8 *buf, int rx_byte, int pkt_size) { u32 *lp, *temp, data; int i, j = 0, cnt; u32 read_cnt; u8 reg[16]; int repeated_bytes = 0; int buf_offset = buf - msm_host->rx_buf; lp = (u32 *)buf; temp = (u32 *)reg; cnt = (rx_byte + 3) >> 2; if (cnt > 4) cnt = 4; /* 4 x 32 bits registers only */ if (rx_byte == 4) read_cnt = 4; else read_cnt = pkt_size + 6; /* * In case of multiple reads from the panel, after the first read, there * is possibility that there are some bytes in the payload repeating in * the RDBK_DATA registers. Since we read all the parameters from the * panel right from the first byte for every pass. We need to skip the * repeating bytes and then append the new parameters to the rx buffer. */ if (read_cnt > 16) { int bytes_shifted; /* Any data more than 16 bytes will be shifted out. * The temp read buffer should already contain these bytes. * The remaining bytes in read buffer are the repeated bytes. */ bytes_shifted = read_cnt - 16; repeated_bytes = buf_offset - bytes_shifted; } for (i = cnt - 1; i >= 0; i--) { data = dsi_read(msm_host, REG_DSI_RDBK_DATA(i)); *temp++ = ntohl(data); /* to host byte order */ DBG("data = 0x%x and ntohl(data) = 0x%x", data, ntohl(data)); } for (i = repeated_bytes; i < 16; i++) buf[j++] = reg[i]; return j; } static int dsi_cmds2buf_tx(struct msm_dsi_host *msm_host, const struct mipi_dsi_msg *msg) { int len, ret; int bllp_len = msm_host->mode->hdisplay * dsi_get_bpp(msm_host->format) / 8; len = dsi_cmd_dma_add(msm_host, msg); if (!len) { pr_err("%s: failed to add cmd type = 0x%x\n", __func__, msg->type); return -EINVAL; } /* for video mode, do not send cmds more than * one pixel line, since it only transmit it * during BLLP. */ /* TODO: if the command is sent in LP mode, the bit rate is only * half of esc clk rate. In this case, if the video is already * actively streaming, we need to check more carefully if the * command can be fit into one BLLP. */ if ((msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) && (len > bllp_len)) { pr_err("%s: cmd cannot fit into BLLP period, len=%d\n", __func__, len); return -EINVAL; } ret = dsi_cmd_dma_tx(msm_host, len); if (ret < len) { pr_err("%s: cmd dma tx failed, type=0x%x, data0=0x%x, len=%d\n", __func__, msg->type, (*(u8 *)(msg->tx_buf)), len); return -ECOMM; } return len; } static void dsi_sw_reset_restore(struct msm_dsi_host *msm_host) { u32 data0, data1; data0 = dsi_read(msm_host, REG_DSI_CTRL); data1 = data0; data1 &= ~DSI_CTRL_ENABLE; dsi_write(msm_host, REG_DSI_CTRL, data1); /* * dsi controller need to be disabled before * clocks turned on */ wmb(); dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS); wmb(); /* make sure clocks enabled */ /* dsi controller can only be reset while clocks are running */ dsi_write(msm_host, REG_DSI_RESET, 1); wmb(); /* make sure reset happen */ dsi_write(msm_host, REG_DSI_RESET, 0); wmb(); /* controller out of reset */ dsi_write(msm_host, REG_DSI_CTRL, data0); wmb(); /* make sure dsi controller enabled again */ } static void dsi_hpd_worker(struct work_struct *work) { struct msm_dsi_host *msm_host = container_of(work, struct msm_dsi_host, hpd_work); drm_helper_hpd_irq_event(msm_host->dev); } static void dsi_err_worker(struct work_struct *work) { struct msm_dsi_host *msm_host = container_of(work, struct msm_dsi_host, err_work); u32 status = msm_host->err_work_state; pr_err_ratelimited("%s: status=%x\n", __func__, status); if (status & DSI_ERR_STATE_MDP_FIFO_UNDERFLOW) dsi_sw_reset_restore(msm_host); /* It is safe to clear here because error irq is disabled. */ msm_host->err_work_state = 0; /* enable dsi error interrupt */ dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1); } static void dsi_ack_err_status(struct msm_dsi_host *msm_host) { u32 status; status = dsi_read(msm_host, REG_DSI_ACK_ERR_STATUS); if (status) { dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, status); /* Writing of an extra 0 needed to clear error bits */ dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, 0); msm_host->err_work_state |= DSI_ERR_STATE_ACK; } } static void dsi_timeout_status(struct msm_dsi_host *msm_host) { u32 status; status = dsi_read(msm_host, REG_DSI_TIMEOUT_STATUS); if (status) { dsi_write(msm_host, REG_DSI_TIMEOUT_STATUS, status); msm_host->err_work_state |= DSI_ERR_STATE_TIMEOUT; } } static void dsi_dln0_phy_err(struct msm_dsi_host *msm_host) { u32 status; status = dsi_read(msm_host, REG_DSI_DLN0_PHY_ERR); if (status & (DSI_DLN0_PHY_ERR_DLN0_ERR_ESC | DSI_DLN0_PHY_ERR_DLN0_ERR_SYNC_ESC | DSI_DLN0_PHY_ERR_DLN0_ERR_CONTROL | DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP0 | DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP1)) { dsi_write(msm_host, REG_DSI_DLN0_PHY_ERR, status); msm_host->err_work_state |= DSI_ERR_STATE_DLN0_PHY; } } static void dsi_fifo_status(struct msm_dsi_host *msm_host) { u32 status; status = dsi_read(msm_host, REG_DSI_FIFO_STATUS); /* fifo underflow, overflow */ if (status) { dsi_write(msm_host, REG_DSI_FIFO_STATUS, status); msm_host->err_work_state |= DSI_ERR_STATE_FIFO; if (status & DSI_FIFO_STATUS_CMD_MDP_FIFO_UNDERFLOW) msm_host->err_work_state |= DSI_ERR_STATE_MDP_FIFO_UNDERFLOW; } } static void dsi_status(struct msm_dsi_host *msm_host) { u32 status; status = dsi_read(msm_host, REG_DSI_STATUS0); if (status & DSI_STATUS0_INTERLEAVE_OP_CONTENTION) { dsi_write(msm_host, REG_DSI_STATUS0, status); msm_host->err_work_state |= DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION; } } static void dsi_clk_status(struct msm_dsi_host *msm_host) { u32 status; status = dsi_read(msm_host, REG_DSI_CLK_STATUS); if (status & DSI_CLK_STATUS_PLL_UNLOCKED) { dsi_write(msm_host, REG_DSI_CLK_STATUS, status); msm_host->err_work_state |= DSI_ERR_STATE_PLL_UNLOCKED; } } static void dsi_error(struct msm_dsi_host *msm_host) { /* disable dsi error interrupt */ dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 0); dsi_clk_status(msm_host); dsi_fifo_status(msm_host); dsi_ack_err_status(msm_host); dsi_timeout_status(msm_host); dsi_status(msm_host); dsi_dln0_phy_err(msm_host); queue_work(msm_host->workqueue, &msm_host->err_work); } static irqreturn_t dsi_host_irq(int irq, void *ptr) { struct msm_dsi_host *msm_host = ptr; u32 isr; unsigned long flags; if (!msm_host->ctrl_base) return IRQ_HANDLED; spin_lock_irqsave(&msm_host->intr_lock, flags); isr = dsi_read(msm_host, REG_DSI_INTR_CTRL); dsi_write(msm_host, REG_DSI_INTR_CTRL, isr); spin_unlock_irqrestore(&msm_host->intr_lock, flags); DBG("isr=0x%x, id=%d", isr, msm_host->id); if (isr & DSI_IRQ_ERROR) dsi_error(msm_host); if (isr & DSI_IRQ_VIDEO_DONE) complete(&msm_host->video_comp); if (isr & DSI_IRQ_CMD_DMA_DONE) complete(&msm_host->dma_comp); return IRQ_HANDLED; } static int dsi_host_init_panel_gpios(struct msm_dsi_host *msm_host, struct device *panel_device) { msm_host->disp_en_gpio = devm_gpiod_get_optional(panel_device, "disp-enable", GPIOD_OUT_LOW); if (IS_ERR(msm_host->disp_en_gpio)) { DBG("cannot get disp-enable-gpios %ld", PTR_ERR(msm_host->disp_en_gpio)); return PTR_ERR(msm_host->disp_en_gpio); } msm_host->te_gpio = devm_gpiod_get_optional(panel_device, "disp-te", GPIOD_IN); if (IS_ERR(msm_host->te_gpio)) { DBG("cannot get disp-te-gpios %ld", PTR_ERR(msm_host->te_gpio)); return PTR_ERR(msm_host->te_gpio); } return 0; } static int dsi_host_attach(struct mipi_dsi_host *host, struct mipi_dsi_device *dsi) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); int ret; if (dsi->lanes > msm_host->num_data_lanes) return -EINVAL; msm_host->channel = dsi->channel; msm_host->lanes = dsi->lanes; msm_host->format = dsi->format; msm_host->mode_flags = dsi->mode_flags; msm_dsi_manager_attach_dsi_device(msm_host->id, dsi->mode_flags); /* Some gpios defined in panel DT need to be controlled by host */ ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev); if (ret) return ret; DBG("id=%d", msm_host->id); if (msm_host->dev) queue_work(msm_host->workqueue, &msm_host->hpd_work); return 0; } static int dsi_host_detach(struct mipi_dsi_host *host, struct mipi_dsi_device *dsi) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); msm_host->device_node = NULL; DBG("id=%d", msm_host->id); if (msm_host->dev) queue_work(msm_host->workqueue, &msm_host->hpd_work); return 0; } static ssize_t dsi_host_transfer(struct mipi_dsi_host *host, const struct mipi_dsi_msg *msg) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); int ret; if (!msg || !msm_host->power_on) return -EINVAL; mutex_lock(&msm_host->cmd_mutex); ret = msm_dsi_manager_cmd_xfer(msm_host->id, msg); mutex_unlock(&msm_host->cmd_mutex); return ret; } static struct mipi_dsi_host_ops dsi_host_ops = { .attach = dsi_host_attach, .detach = dsi_host_detach, .transfer = dsi_host_transfer, }; /* * List of supported physical to logical lane mappings. * For example, the 2nd entry represents the following mapping: * * "3012": Logic 3->Phys 0; Logic 0->Phys 1; Logic 1->Phys 2; Logic 2->Phys 3; */ static const int supported_data_lane_swaps[][4] = { { 0, 1, 2, 3 }, { 3, 0, 1, 2 }, { 2, 3, 0, 1 }, { 1, 2, 3, 0 }, { 0, 3, 2, 1 }, { 1, 0, 3, 2 }, { 2, 1, 0, 3 }, { 3, 2, 1, 0 }, }; static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host, struct device_node *ep) { struct device *dev = &msm_host->pdev->dev; struct property *prop; u32 lane_map[4]; int ret, i, len, num_lanes; prop = of_find_property(ep, "data-lanes", &len); if (!prop) { DRM_DEV_DEBUG(dev, "failed to find data lane mapping, using default\n"); return 0; } num_lanes = len / sizeof(u32); if (num_lanes < 1 || num_lanes > 4) { DRM_DEV_ERROR(dev, "bad number of data lanes\n"); return -EINVAL; } msm_host->num_data_lanes = num_lanes; ret = of_property_read_u32_array(ep, "data-lanes", lane_map, num_lanes); if (ret) { DRM_DEV_ERROR(dev, "failed to read lane data\n"); return ret; } /* * compare DT specified physical-logical lane mappings with the ones * supported by hardware */ for (i = 0; i < ARRAY_SIZE(supported_data_lane_swaps); i++) { const int *swap = supported_data_lane_swaps[i]; int j; /* * the data-lanes array we get from DT has a logical->physical * mapping. The "data lane swap" register field represents * supported configurations in a physical->logical mapping. * Translate the DT mapping to what we understand and find a * configuration that works. */ for (j = 0; j < num_lanes; j++) { if (lane_map[j] < 0 || lane_map[j] > 3) DRM_DEV_ERROR(dev, "bad physical lane entry %u\n", lane_map[j]); if (swap[lane_map[j]] != j) break; } if (j == num_lanes) { msm_host->dlane_swap = i; return 0; } } return -EINVAL; } static int dsi_host_parse_dt(struct msm_dsi_host *msm_host) { struct device *dev = &msm_host->pdev->dev; struct device_node *np = dev->of_node; struct device_node *endpoint, *device_node; int ret = 0; /* * Get the endpoint of the output port of the DSI host. In our case, * this is mapped to port number with reg = 1. Don't return an error if * the remote endpoint isn't defined. It's possible that there is * nothing connected to the dsi output. */ endpoint = of_graph_get_endpoint_by_regs(np, 1, -1); if (!endpoint) { DRM_DEV_DEBUG(dev, "%s: no endpoint\n", __func__); return 0; } ret = dsi_host_parse_lane_data(msm_host, endpoint); if (ret) { DRM_DEV_ERROR(dev, "%s: invalid lane configuration %d\n", __func__, ret); ret = -EINVAL; goto err; } /* Get panel node from the output port's endpoint data */ device_node = of_graph_get_remote_node(np, 1, 0); if (!device_node) { DRM_DEV_DEBUG(dev, "%s: no valid device\n", __func__); ret = -ENODEV; goto err; } msm_host->device_node = device_node; if (of_property_read_bool(np, "syscon-sfpb")) { msm_host->sfpb = syscon_regmap_lookup_by_phandle(np, "syscon-sfpb"); if (IS_ERR(msm_host->sfpb)) { DRM_DEV_ERROR(dev, "%s: failed to get sfpb regmap\n", __func__); ret = PTR_ERR(msm_host->sfpb); } } of_node_put(device_node); err: of_node_put(endpoint); return ret; } static int dsi_host_get_id(struct msm_dsi_host *msm_host) { struct platform_device *pdev = msm_host->pdev; const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg; struct resource *res; int i; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dsi_ctrl"); if (!res) return -EINVAL; for (i = 0; i < cfg->num_dsi; i++) { if (cfg->io_start[i] == res->start) return i; } return -EINVAL; } int msm_dsi_host_init(struct msm_dsi *msm_dsi) { struct msm_dsi_host *msm_host = NULL; struct platform_device *pdev = msm_dsi->pdev; int ret; msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL); if (!msm_host) { pr_err("%s: FAILED: cannot alloc dsi host\n", __func__); ret = -ENOMEM; goto fail; } msm_host->pdev = pdev; msm_dsi->host = &msm_host->base; ret = dsi_host_parse_dt(msm_host); if (ret) { pr_err("%s: failed to parse dt\n", __func__); goto fail; } msm_host->ctrl_base = msm_ioremap(pdev, "dsi_ctrl", "DSI CTRL"); if (IS_ERR(msm_host->ctrl_base)) { pr_err("%s: unable to map Dsi ctrl base\n", __func__); ret = PTR_ERR(msm_host->ctrl_base); goto fail; } pm_runtime_enable(&pdev->dev); msm_host->cfg_hnd = dsi_get_config(msm_host); if (!msm_host->cfg_hnd) { ret = -EINVAL; pr_err("%s: get config failed\n", __func__); goto fail; } msm_host->id = dsi_host_get_id(msm_host); if (msm_host->id < 0) { ret = msm_host->id; pr_err("%s: unable to identify DSI host index\n", __func__); goto fail; } /* fixup base address by io offset */ msm_host->ctrl_base += msm_host->cfg_hnd->cfg->io_offset; ret = dsi_regulator_init(msm_host); if (ret) { pr_err("%s: regulator init failed\n", __func__); goto fail; } ret = dsi_clk_init(msm_host); if (ret) { pr_err("%s: unable to initialize dsi clks\n", __func__); goto fail; } msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL); if (!msm_host->rx_buf) { ret = -ENOMEM; pr_err("%s: alloc rx temp buf failed\n", __func__); goto fail; } init_completion(&msm_host->dma_comp); init_completion(&msm_host->video_comp); mutex_init(&msm_host->dev_mutex); mutex_init(&msm_host->cmd_mutex); spin_lock_init(&msm_host->intr_lock); /* setup workqueue */ msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0); INIT_WORK(&msm_host->err_work, dsi_err_worker); INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker); msm_dsi->id = msm_host->id; DBG("Dsi Host %d initialized", msm_host->id); return 0; fail: return ret; } void msm_dsi_host_destroy(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); DBG(""); dsi_tx_buf_free(msm_host); if (msm_host->workqueue) { flush_workqueue(msm_host->workqueue); destroy_workqueue(msm_host->workqueue); msm_host->workqueue = NULL; } mutex_destroy(&msm_host->cmd_mutex); mutex_destroy(&msm_host->dev_mutex); pm_runtime_disable(&msm_host->pdev->dev); } int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, struct drm_device *dev) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; struct platform_device *pdev = msm_host->pdev; int ret; msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (msm_host->irq < 0) { ret = msm_host->irq; DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret); return ret; } ret = devm_request_irq(&pdev->dev, msm_host->irq, dsi_host_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "dsi_isr", msm_host); if (ret < 0) { DRM_DEV_ERROR(&pdev->dev, "failed to request IRQ%u: %d\n", msm_host->irq, ret); return ret; } msm_host->dev = dev; ret = cfg_hnd->ops->tx_buf_alloc(msm_host, SZ_4K); if (ret) { pr_err("%s: alloc tx gem obj failed, %d\n", __func__, ret); return ret; } return 0; } int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); int ret; /* Register mipi dsi host */ if (!msm_host->registered) { host->dev = &msm_host->pdev->dev; host->ops = &dsi_host_ops; ret = mipi_dsi_host_register(host); if (ret) return ret; msm_host->registered = true; /* If the panel driver has not been probed after host register, * we should defer the host's probe. * It makes sure panel is connected when fbcon detects * connector status and gets the proper display mode to * create framebuffer. * Don't try to defer if there is nothing connected to the dsi * output */ if (check_defer && msm_host->device_node) { if (IS_ERR(of_drm_find_panel(msm_host->device_node))) if (!of_drm_find_bridge(msm_host->device_node)) return -EPROBE_DEFER; } } return 0; } void msm_dsi_host_unregister(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); if (msm_host->registered) { mipi_dsi_host_unregister(host); host->dev = NULL; host->ops = NULL; msm_host->registered = false; } } int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, const struct mipi_dsi_msg *msg) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; /* TODO: make sure dsi_cmd_mdp is idle. * Since DSI6G v1.2.0, we can set DSI_TRIG_CTRL.BLOCK_DMA_WITHIN_FRAME * to ask H/W to wait until cmd mdp is idle. S/W wait is not needed. * How to handle the old versions? Wait for mdp cmd done? */ /* * mdss interrupt is generated in mdp core clock domain * mdp clock need to be enabled to receive dsi interrupt */ pm_runtime_get_sync(&msm_host->pdev->dev); cfg_hnd->ops->link_clk_enable(msm_host); /* TODO: vote for bus bandwidth */ if (!(msg->flags & MIPI_DSI_MSG_USE_LPM)) dsi_set_tx_power_mode(0, msm_host); msm_host->dma_cmd_ctrl_restore = dsi_read(msm_host, REG_DSI_CTRL); dsi_write(msm_host, REG_DSI_CTRL, msm_host->dma_cmd_ctrl_restore | DSI_CTRL_CMD_MODE_EN | DSI_CTRL_ENABLE); dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 1); return 0; } void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, const struct mipi_dsi_msg *msg) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 0); dsi_write(msm_host, REG_DSI_CTRL, msm_host->dma_cmd_ctrl_restore); if (!(msg->flags & MIPI_DSI_MSG_USE_LPM)) dsi_set_tx_power_mode(1, msm_host); /* TODO: unvote for bus bandwidth */ cfg_hnd->ops->link_clk_disable(msm_host); pm_runtime_put_autosuspend(&msm_host->pdev->dev); } int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, const struct mipi_dsi_msg *msg) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); return dsi_cmds2buf_tx(msm_host, msg); } int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, const struct mipi_dsi_msg *msg) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; int data_byte, rx_byte, dlen, end; int short_response, diff, pkt_size, ret = 0; char cmd; int rlen = msg->rx_len; u8 *buf; if (rlen <= 2) { short_response = 1; pkt_size = rlen; rx_byte = 4; } else { short_response = 0; data_byte = 10; /* first read */ if (rlen < data_byte) pkt_size = rlen; else pkt_size = data_byte; rx_byte = data_byte + 6; /* 4 header + 2 crc */ } buf = msm_host->rx_buf; end = 0; while (!end) { u8 tx[2] = {pkt_size & 0xff, pkt_size >> 8}; struct mipi_dsi_msg max_pkt_size_msg = { .channel = msg->channel, .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, .tx_len = 2, .tx_buf = tx, }; DBG("rlen=%d pkt_size=%d rx_byte=%d", rlen, pkt_size, rx_byte); ret = dsi_cmds2buf_tx(msm_host, &max_pkt_size_msg); if (ret < 2) { pr_err("%s: Set max pkt size failed, %d\n", __func__, ret); return -EINVAL; } if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) && (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_1)) { /* Clear the RDBK_DATA registers */ dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, DSI_RDBK_DATA_CTRL_CLR); wmb(); /* make sure the RDBK registers are cleared */ dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, 0); wmb(); /* release cleared status before transfer */ } ret = dsi_cmds2buf_tx(msm_host, msg); if (ret < msg->tx_len) { pr_err("%s: Read cmd Tx failed, %d\n", __func__, ret); return ret; } /* * once cmd_dma_done interrupt received, * return data from client is ready and stored * at RDBK_DATA register already * since rx fifo is 16 bytes, dcs header is kept at first loop, * after that dcs header lost during shift into registers */ dlen = dsi_cmd_dma_rx(msm_host, buf, rx_byte, pkt_size); if (dlen <= 0) return 0; if (short_response) break; if (rlen <= data_byte) { diff = data_byte - rlen; end = 1; } else { diff = 0; rlen -= data_byte; } if (!end) { dlen -= 2; /* 2 crc */ dlen -= diff; buf += dlen; /* next start position */ data_byte = 14; /* NOT first read */ if (rlen < data_byte) pkt_size += rlen; else pkt_size += data_byte; DBG("buf=%p dlen=%d diff=%d", buf, dlen, diff); } } /* * For single Long read, if the requested rlen < 10, * we need to shift the start position of rx * data buffer to skip the bytes which are not * updated. */ if (pkt_size < 10 && !short_response) buf = msm_host->rx_buf + (10 - rlen); else buf = msm_host->rx_buf; cmd = buf[0]; switch (cmd) { case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT: pr_err("%s: rx ACK_ERR_PACLAGE\n", __func__); ret = 0; break; case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE: case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE: ret = dsi_short_read1_resp(buf, msg); break; case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE: case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE: ret = dsi_short_read2_resp(buf, msg); break; case MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE: case MIPI_DSI_RX_DCS_LONG_READ_RESPONSE: ret = dsi_long_read_resp(buf, msg); break; default: pr_warn("%s:Invalid response cmd\n", __func__); ret = 0; } return ret; } void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, u32 dma_base, u32 len) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); dsi_write(msm_host, REG_DSI_DMA_BASE, dma_base); dsi_write(msm_host, REG_DSI_DMA_LEN, len); dsi_write(msm_host, REG_DSI_TRIG_DMA, 1); /* Make sure trigger happens */ wmb(); } int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, struct msm_dsi_pll *src_pll) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); struct clk *byte_clk_provider, *pixel_clk_provider; int ret; ret = msm_dsi_pll_get_clk_provider(src_pll, &byte_clk_provider, &pixel_clk_provider); if (ret) { pr_info("%s: can't get provider from pll, don't set parent\n", __func__); return 0; } ret = clk_set_parent(msm_host->byte_clk_src, byte_clk_provider); if (ret) { pr_err("%s: can't set parent to byte_clk_src. ret=%d\n", __func__, ret); goto exit; } ret = clk_set_parent(msm_host->pixel_clk_src, pixel_clk_provider); if (ret) { pr_err("%s: can't set parent to pixel_clk_src. ret=%d\n", __func__, ret); goto exit; } if (msm_host->dsi_clk_src) { ret = clk_set_parent(msm_host->dsi_clk_src, pixel_clk_provider); if (ret) { pr_err("%s: can't set parent to dsi_clk_src. ret=%d\n", __func__, ret); goto exit; } } if (msm_host->esc_clk_src) { ret = clk_set_parent(msm_host->esc_clk_src, byte_clk_provider); if (ret) { pr_err("%s: can't set parent to esc_clk_src. ret=%d\n", __func__, ret); goto exit; } } exit: return ret; } void msm_dsi_host_reset_phy(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); DBG(""); dsi_write(msm_host, REG_DSI_PHY_RESET, DSI_PHY_RESET_RESET); /* Make sure fully reset */ wmb(); udelay(1000); dsi_write(msm_host, REG_DSI_PHY_RESET, 0); udelay(100); } void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, struct msm_dsi_phy_clk_request *clk_req, bool is_dual_dsi) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; int ret; ret = cfg_hnd->ops->calc_clk_rate(msm_host, is_dual_dsi); if (ret) { pr_err("%s: unable to calc clk rate, %d\n", __func__, ret); return; } clk_req->bitclk_rate = msm_host->byte_clk_rate * 8; clk_req->escclk_rate = msm_host->esc_clk_rate; } int msm_dsi_host_enable(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); dsi_op_mode_config(msm_host, !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), true); /* TODO: clock should be turned off for command mode, * and only turned on before MDP START. * This part of code should be enabled once mdp driver support it. */ /* if (msm_panel->mode == MSM_DSI_CMD_MODE) { * dsi_link_clk_disable(msm_host); * pm_runtime_put_autosuspend(&msm_host->pdev->dev); * } */ msm_host->enabled = true; return 0; } int msm_dsi_host_disable(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); msm_host->enabled = false; dsi_op_mode_config(msm_host, !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), false); /* Since we have disabled INTF, the video engine won't stop so that * the cmd engine will be blocked. * Reset to disable video engine so that we can send off cmd. */ dsi_sw_reset(msm_host); return 0; } static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable) { enum sfpb_ahb_arb_master_port_en en; if (!msm_host->sfpb) return; en = enable ? SFPB_MASTER_PORT_ENABLE : SFPB_MASTER_PORT_DISABLE; regmap_update_bits(msm_host->sfpb, REG_SFPB_GPREG, SFPB_GPREG_MASTER_PORT_EN__MASK, SFPB_GPREG_MASTER_PORT_EN(en)); } int msm_dsi_host_power_on(struct mipi_dsi_host *host, struct msm_dsi_phy_shared_timings *phy_shared_timings, bool is_dual_dsi) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; int ret = 0; mutex_lock(&msm_host->dev_mutex); if (msm_host->power_on) { DBG("dsi host already on"); goto unlock_ret; } msm_dsi_sfpb_config(msm_host, true); ret = dsi_host_regulator_enable(msm_host); if (ret) { pr_err("%s:Failed to enable vregs.ret=%d\n", __func__, ret); goto unlock_ret; } pm_runtime_get_sync(&msm_host->pdev->dev); ret = cfg_hnd->ops->link_clk_enable(msm_host); if (ret) { pr_err("%s: failed to enable link clocks. ret=%d\n", __func__, ret); goto fail_disable_reg; } ret = pinctrl_pm_select_default_state(&msm_host->pdev->dev); if (ret) { pr_err("%s: failed to set pinctrl default state, %d\n", __func__, ret); goto fail_disable_clk; } dsi_timing_setup(msm_host, is_dual_dsi); dsi_sw_reset(msm_host); dsi_ctrl_config(msm_host, true, phy_shared_timings); if (msm_host->disp_en_gpio) gpiod_set_value(msm_host->disp_en_gpio, 1); msm_host->power_on = true; mutex_unlock(&msm_host->dev_mutex); return 0; fail_disable_clk: cfg_hnd->ops->link_clk_disable(msm_host); pm_runtime_put_autosuspend(&msm_host->pdev->dev); fail_disable_reg: dsi_host_regulator_disable(msm_host); unlock_ret: mutex_unlock(&msm_host->dev_mutex); return ret; } int msm_dsi_host_power_off(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; mutex_lock(&msm_host->dev_mutex); if (!msm_host->power_on) { DBG("dsi host already off"); goto unlock_ret; } dsi_ctrl_config(msm_host, false, NULL); if (msm_host->disp_en_gpio) gpiod_set_value(msm_host->disp_en_gpio, 0); pinctrl_pm_select_sleep_state(&msm_host->pdev->dev); cfg_hnd->ops->link_clk_disable(msm_host); pm_runtime_put_autosuspend(&msm_host->pdev->dev); dsi_host_regulator_disable(msm_host); msm_dsi_sfpb_config(msm_host, false); DBG("-"); msm_host->power_on = false; unlock_ret: mutex_unlock(&msm_host->dev_mutex); return 0; } int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, struct drm_display_mode *mode) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); if (msm_host->mode) { drm_mode_destroy(msm_host->dev, msm_host->mode); msm_host->mode = NULL; } msm_host->mode = drm_mode_duplicate(msm_host->dev, mode); if (!msm_host->mode) { pr_err("%s: cannot duplicate mode\n", __func__); return -ENOMEM; } return 0; } struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, unsigned long *panel_flags) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); struct drm_panel *panel; panel = of_drm_find_panel(msm_host->device_node); if (panel_flags) *panel_flags = msm_host->mode_flags; return panel; } struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); return of_drm_find_bridge(msm_host->device_node); }
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1