| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Philippe Cornu | 2667 | 100.00% | 7 | 100.00% |
| Total | 2667 | 7 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) STMicroelectronics SA 2017 * * Authors: Philippe Cornu <philippe.cornu@st.com> * Yannick Fertre <yannick.fertre@st.com> */ #include <drm/drmP.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_panel.h> #include <linux/backlight.h> #include <linux/gpio/consumer.h> #include <linux/regulator/consumer.h> #include <video/mipi_display.h> #define OTM8009A_BACKLIGHT_DEFAULT 240 #define OTM8009A_BACKLIGHT_MAX 255 /* Manufacturer Command Set */ #define MCS_ADRSFT 0x0000 /* Address Shift Function */ #define MCS_PANSET 0xB3A6 /* Panel Type Setting */ #define MCS_SD_CTRL 0xC0A2 /* Source Driver Timing Setting */ #define MCS_P_DRV_M 0xC0B4 /* Panel Driving Mode */ #define MCS_OSC_ADJ 0xC181 /* Oscillator Adjustment for Idle/Normal mode */ #define MCS_RGB_VID_SET 0xC1A1 /* RGB Video Mode Setting */ #define MCS_SD_PCH_CTRL 0xC480 /* Source Driver Precharge Control */ #define MCS_NO_DOC1 0xC48A /* Command not documented */ #define MCS_PWR_CTRL1 0xC580 /* Power Control Setting 1 */ #define MCS_PWR_CTRL2 0xC590 /* Power Control Setting 2 for Normal Mode */ #define MCS_PWR_CTRL4 0xC5B0 /* Power Control Setting 4 for DC Voltage */ #define MCS_PANCTRLSET1 0xCB80 /* Panel Control Setting 1 */ #define MCS_PANCTRLSET2 0xCB90 /* Panel Control Setting 2 */ #define MCS_PANCTRLSET3 0xCBA0 /* Panel Control Setting 3 */ #define MCS_PANCTRLSET4 0xCBB0 /* Panel Control Setting 4 */ #define MCS_PANCTRLSET5 0xCBC0 /* Panel Control Setting 5 */ #define MCS_PANCTRLSET6 0xCBD0 /* Panel Control Setting 6 */ #define MCS_PANCTRLSET7 0xCBE0 /* Panel Control Setting 7 */ #define MCS_PANCTRLSET8 0xCBF0 /* Panel Control Setting 8 */ #define MCS_PANU2D1 0xCC80 /* Panel U2D Setting 1 */ #define MCS_PANU2D2 0xCC90 /* Panel U2D Setting 2 */ #define MCS_PANU2D3 0xCCA0 /* Panel U2D Setting 3 */ #define MCS_PAND2U1 0xCCB0 /* Panel D2U Setting 1 */ #define MCS_PAND2U2 0xCCC0 /* Panel D2U Setting 2 */ #define MCS_PAND2U3 0xCCD0 /* Panel D2U Setting 3 */ #define MCS_GOAVST 0xCE80 /* GOA VST Setting */ #define MCS_GOACLKA1 0xCEA0 /* GOA CLKA1 Setting */ #define MCS_GOACLKA3 0xCEB0 /* GOA CLKA3 Setting */ #define MCS_GOAECLK 0xCFC0 /* GOA ECLK Setting */ #define MCS_NO_DOC2 0xCFD0 /* Command not documented */ #define MCS_GVDDSET 0xD800 /* GVDD/NGVDD */ #define MCS_VCOMDC 0xD900 /* VCOM Voltage Setting */ #define MCS_GMCT2_2P 0xE100 /* Gamma Correction 2.2+ Setting */ #define MCS_GMCT2_2N 0xE200 /* Gamma Correction 2.2- Setting */ #define MCS_NO_DOC3 0xF5B6 /* Command not documented */ #define MCS_CMD2_ENA1 0xFF00 /* Enable Access Command2 "CMD2" */ #define MCS_CMD2_ENA2 0xFF80 /* Enable Access Orise Command2 */ struct otm8009a { struct device *dev; struct drm_panel panel; struct backlight_device *bl_dev; struct gpio_desc *reset_gpio; struct regulator *supply; bool prepared; bool enabled; }; static const struct drm_display_mode default_mode = { .clock = 32729, .hdisplay = 480, .hsync_start = 480 + 120, .hsync_end = 480 + 120 + 63, .htotal = 480 + 120 + 63 + 120, .vdisplay = 800, .vsync_start = 800 + 12, .vsync_end = 800 + 12 + 12, .vtotal = 800 + 12 + 12 + 12, .vrefresh = 50, .flags = 0, .width_mm = 52, .height_mm = 86, }; static inline struct otm8009a *panel_to_otm8009a(struct drm_panel *panel) { return container_of(panel, struct otm8009a, panel); } static void otm8009a_dcs_write_buf(struct otm8009a *ctx, const void *data, size_t len) { struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); if (mipi_dsi_dcs_write_buffer(dsi, data, len) < 0) DRM_WARN("mipi dsi dcs write buffer failed\n"); } static void otm8009a_dcs_write_buf_hs(struct otm8009a *ctx, const void *data, size_t len) { struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); /* data will be sent in dsi hs mode (ie. no lpm) */ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; otm8009a_dcs_write_buf(ctx, data, len); /* restore back the dsi lpm mode */ dsi->mode_flags |= MIPI_DSI_MODE_LPM; } #define dcs_write_seq(ctx, seq...) \ ({ \ static const u8 d[] = { seq }; \ otm8009a_dcs_write_buf(ctx, d, ARRAY_SIZE(d)); \ }) #define dcs_write_cmd_at(ctx, cmd, seq...) \ ({ \ dcs_write_seq(ctx, MCS_ADRSFT, (cmd) & 0xFF); \ dcs_write_seq(ctx, (cmd) >> 8, seq); \ }) static int otm8009a_init_sequence(struct otm8009a *ctx) { struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); int ret; /* Enter CMD2 */ dcs_write_cmd_at(ctx, MCS_CMD2_ENA1, 0x80, 0x09, 0x01); /* Enter Orise Command2 */ dcs_write_cmd_at(ctx, MCS_CMD2_ENA2, 0x80, 0x09); dcs_write_cmd_at(ctx, MCS_SD_PCH_CTRL, 0x30); mdelay(10); dcs_write_cmd_at(ctx, MCS_NO_DOC1, 0x40); mdelay(10); dcs_write_cmd_at(ctx, MCS_PWR_CTRL4 + 1, 0xA9); dcs_write_cmd_at(ctx, MCS_PWR_CTRL2 + 1, 0x34); dcs_write_cmd_at(ctx, MCS_P_DRV_M, 0x50); dcs_write_cmd_at(ctx, MCS_VCOMDC, 0x4E); dcs_write_cmd_at(ctx, MCS_OSC_ADJ, 0x66); /* 65Hz */ dcs_write_cmd_at(ctx, MCS_PWR_CTRL2 + 2, 0x01); dcs_write_cmd_at(ctx, MCS_PWR_CTRL2 + 5, 0x34); dcs_write_cmd_at(ctx, MCS_PWR_CTRL2 + 4, 0x33); dcs_write_cmd_at(ctx, MCS_GVDDSET, 0x79, 0x79); dcs_write_cmd_at(ctx, MCS_SD_CTRL + 1, 0x1B); dcs_write_cmd_at(ctx, MCS_PWR_CTRL1 + 2, 0x83); dcs_write_cmd_at(ctx, MCS_SD_PCH_CTRL + 1, 0x83); dcs_write_cmd_at(ctx, MCS_RGB_VID_SET, 0x0E); dcs_write_cmd_at(ctx, MCS_PANSET, 0x00, 0x01); dcs_write_cmd_at(ctx, MCS_GOAVST, 0x85, 0x01, 0x00, 0x84, 0x01, 0x00); dcs_write_cmd_at(ctx, MCS_GOACLKA1, 0x18, 0x04, 0x03, 0x39, 0x00, 0x00, 0x00, 0x18, 0x03, 0x03, 0x3A, 0x00, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_GOACLKA3, 0x18, 0x02, 0x03, 0x3B, 0x00, 0x00, 0x00, 0x18, 0x01, 0x03, 0x3C, 0x00, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_GOAECLK, 0x01, 0x01, 0x20, 0x20, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_NO_DOC2, 0x00); dcs_write_cmd_at(ctx, MCS_PANCTRLSET1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET5, 0, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET6, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); dcs_write_cmd_at(ctx, MCS_PANCTRLSET8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF); dcs_write_cmd_at(ctx, MCS_PANU2D1, 0x00, 0x26, 0x09, 0x0B, 0x01, 0x25, 0x00, 0x00, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_PANU2D2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, 0x0A, 0x0C, 0x02); dcs_write_cmd_at(ctx, MCS_PANU2D3, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_PAND2U1, 0x00, 0x25, 0x0C, 0x0A, 0x02, 0x26, 0x00, 0x00, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_PAND2U2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x25, 0x0B, 0x09, 0x01); dcs_write_cmd_at(ctx, MCS_PAND2U3, 0x26, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); dcs_write_cmd_at(ctx, MCS_PWR_CTRL1 + 1, 0x66); dcs_write_cmd_at(ctx, MCS_NO_DOC3, 0x06); dcs_write_cmd_at(ctx, MCS_GMCT2_2P, 0x00, 0x09, 0x0F, 0x0E, 0x07, 0x10, 0x0B, 0x0A, 0x04, 0x07, 0x0B, 0x08, 0x0F, 0x10, 0x0A, 0x01); dcs_write_cmd_at(ctx, MCS_GMCT2_2N, 0x00, 0x09, 0x0F, 0x0E, 0x07, 0x10, 0x0B, 0x0A, 0x04, 0x07, 0x0B, 0x08, 0x0F, 0x10, 0x0A, 0x01); /* Exit CMD2 */ dcs_write_cmd_at(ctx, MCS_CMD2_ENA1, 0xFF, 0xFF, 0xFF); ret = mipi_dsi_dcs_nop(dsi); if (ret) return ret; ret = mipi_dsi_dcs_exit_sleep_mode(dsi); if (ret) return ret; /* Wait for sleep out exit */ mdelay(120); /* Default portrait 480x800 rgb24 */ dcs_write_seq(ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00); ret = mipi_dsi_dcs_set_column_address(dsi, 0, default_mode.hdisplay - 1); if (ret) return ret; ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1); if (ret) return ret; /* See otm8009a driver documentation for pixel format descriptions */ ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT | MIPI_DCS_PIXEL_FMT_24BIT << 4); if (ret) return ret; /* Disable CABC feature */ dcs_write_seq(ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00); ret = mipi_dsi_dcs_set_display_on(dsi); if (ret) return ret; ret = mipi_dsi_dcs_nop(dsi); if (ret) return ret; /* Send Command GRAM memory write (no parameters) */ dcs_write_seq(ctx, MIPI_DCS_WRITE_MEMORY_START); return 0; } static int otm8009a_disable(struct drm_panel *panel) { struct otm8009a *ctx = panel_to_otm8009a(panel); struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); int ret; if (!ctx->enabled) return 0; /* This is not an issue so we return 0 here */ backlight_disable(ctx->bl_dev); ret = mipi_dsi_dcs_set_display_off(dsi); if (ret) return ret; ret = mipi_dsi_dcs_enter_sleep_mode(dsi); if (ret) return ret; msleep(120); ctx->enabled = false; return 0; } static int otm8009a_unprepare(struct drm_panel *panel) { struct otm8009a *ctx = panel_to_otm8009a(panel); if (!ctx->prepared) return 0; if (ctx->reset_gpio) { gpiod_set_value_cansleep(ctx->reset_gpio, 1); msleep(20); } regulator_disable(ctx->supply); ctx->prepared = false; return 0; } static int otm8009a_prepare(struct drm_panel *panel) { struct otm8009a *ctx = panel_to_otm8009a(panel); int ret; if (ctx->prepared) return 0; ret = regulator_enable(ctx->supply); if (ret < 0) { DRM_ERROR("failed to enable supply: %d\n", ret); return ret; } if (ctx->reset_gpio) { gpiod_set_value_cansleep(ctx->reset_gpio, 0); gpiod_set_value_cansleep(ctx->reset_gpio, 1); msleep(20); gpiod_set_value_cansleep(ctx->reset_gpio, 0); msleep(100); } ret = otm8009a_init_sequence(ctx); if (ret) return ret; ctx->prepared = true; return 0; } static int otm8009a_enable(struct drm_panel *panel) { struct otm8009a *ctx = panel_to_otm8009a(panel); if (ctx->enabled) return 0; backlight_enable(ctx->bl_dev); ctx->enabled = true; return 0; } static int otm8009a_get_modes(struct drm_panel *panel) { struct drm_display_mode *mode; mode = drm_mode_duplicate(panel->drm, &default_mode); if (!mode) { DRM_ERROR("failed to add mode %ux%ux@%u\n", default_mode.hdisplay, default_mode.vdisplay, default_mode.vrefresh); return -ENOMEM; } drm_mode_set_name(mode); mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(panel->connector, mode); panel->connector->display_info.width_mm = mode->width_mm; panel->connector->display_info.height_mm = mode->height_mm; return 1; } static const struct drm_panel_funcs otm8009a_drm_funcs = { .disable = otm8009a_disable, .unprepare = otm8009a_unprepare, .prepare = otm8009a_prepare, .enable = otm8009a_enable, .get_modes = otm8009a_get_modes, }; /* * DSI-BASED BACKLIGHT */ static int otm8009a_backlight_update_status(struct backlight_device *bd) { struct otm8009a *ctx = bl_get_data(bd); u8 data[2]; if (!ctx->prepared) { DRM_DEBUG("lcd not ready yet for setting its backlight!\n"); return -ENXIO; } if (bd->props.power <= FB_BLANK_NORMAL) { /* Power on the backlight with the requested brightness * Note We can not use mipi_dsi_dcs_set_display_brightness() * as otm8009a driver support only 8-bit brightness (1 param). */ data[0] = MIPI_DCS_SET_DISPLAY_BRIGHTNESS; data[1] = bd->props.brightness; otm8009a_dcs_write_buf_hs(ctx, data, ARRAY_SIZE(data)); /* set Brightness Control & Backlight on */ data[1] = 0x24; } else { /* Power off the backlight: set Brightness Control & Bl off */ data[1] = 0; } /* Update Brightness Control & Backlight */ data[0] = MIPI_DCS_WRITE_CONTROL_DISPLAY; otm8009a_dcs_write_buf_hs(ctx, data, ARRAY_SIZE(data)); return 0; } static const struct backlight_ops otm8009a_backlight_ops = { .update_status = otm8009a_backlight_update_status, }; static int otm8009a_probe(struct mipi_dsi_device *dsi) { struct device *dev = &dsi->dev; struct otm8009a *ctx; int ret; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ctx->reset_gpio)) { dev_err(dev, "cannot get reset-gpio\n"); return PTR_ERR(ctx->reset_gpio); } ctx->supply = devm_regulator_get(dev, "power"); if (IS_ERR(ctx->supply)) { ret = PTR_ERR(ctx->supply); dev_err(dev, "failed to request regulator: %d\n", ret); return ret; } mipi_dsi_set_drvdata(dsi, ctx); ctx->dev = dev; dsi->lanes = 2; dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM; drm_panel_init(&ctx->panel); ctx->panel.dev = dev; ctx->panel.funcs = &otm8009a_drm_funcs; ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev), dsi->host->dev, ctx, &otm8009a_backlight_ops, NULL); if (IS_ERR(ctx->bl_dev)) { ret = PTR_ERR(ctx->bl_dev); dev_err(dev, "failed to register backlight: %d\n", ret); return ret; } ctx->bl_dev->props.max_brightness = OTM8009A_BACKLIGHT_MAX; ctx->bl_dev->props.brightness = OTM8009A_BACKLIGHT_DEFAULT; ctx->bl_dev->props.power = FB_BLANK_POWERDOWN; ctx->bl_dev->props.type = BACKLIGHT_RAW; drm_panel_add(&ctx->panel); ret = mipi_dsi_attach(dsi); if (ret < 0) { dev_err(dev, "mipi_dsi_attach failed. Is host ready?\n"); drm_panel_remove(&ctx->panel); backlight_device_unregister(ctx->bl_dev); return ret; } return 0; } static int otm8009a_remove(struct mipi_dsi_device *dsi) { struct otm8009a *ctx = mipi_dsi_get_drvdata(dsi); mipi_dsi_detach(dsi); drm_panel_remove(&ctx->panel); return 0; } static const struct of_device_id orisetech_otm8009a_of_match[] = { { .compatible = "orisetech,otm8009a" }, { } }; MODULE_DEVICE_TABLE(of, orisetech_otm8009a_of_match); static struct mipi_dsi_driver orisetech_otm8009a_driver = { .probe = otm8009a_probe, .remove = otm8009a_remove, .driver = { .name = "panel-orisetech-otm8009a", .of_match_table = orisetech_otm8009a_of_match, }, }; module_mipi_dsi_driver(orisetech_otm8009a_driver); MODULE_AUTHOR("Philippe Cornu <philippe.cornu@st.com>"); MODULE_AUTHOR("Yannick Fertre <yannick.fertre@st.com>"); MODULE_DESCRIPTION("DRM driver for Orise Tech OTM8009A MIPI DSI panel"); MODULE_LICENSE("GPL v2");
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