| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd |
| */ |
| |
| #include <linux/backlight.h> |
| #include <linux/delay.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/regulator/consumer.h> |
| |
| #include <video/mipi_display.h> |
| |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_device.h> |
| #include <drm/drm_mipi_dsi.h> |
| #include <drm/drm_modes.h> |
| #include <drm/drm_panel.h> |
| #include <drm/drm_print.h> |
| |
| struct panel_init_cmd { |
| size_t len; |
| const char *data; |
| }; |
| |
| #define _INIT_CMD(...) { \ |
| .len = sizeof((char[]){__VA_ARGS__}), \ |
| .data = (char[]){__VA_ARGS__} } |
| |
| struct panel_desc { |
| const struct drm_display_mode *mode; |
| unsigned int bpc; |
| struct { |
| unsigned int width; |
| unsigned int height; |
| } size; |
| |
| unsigned long flags; |
| enum mipi_dsi_pixel_format format; |
| const struct panel_init_cmd *init_cmds; |
| unsigned int lanes; |
| const char * const *supply_names; |
| unsigned int num_supplies; |
| unsigned int sleep_mode_delay; |
| unsigned int power_down_delay; |
| }; |
| |
| struct innolux_panel { |
| struct drm_panel base; |
| struct mipi_dsi_device *link; |
| const struct panel_desc *desc; |
| |
| struct backlight_device *backlight; |
| struct regulator_bulk_data *supplies; |
| struct gpio_desc *enable_gpio; |
| |
| bool prepared; |
| bool enabled; |
| }; |
| |
| static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel) |
| { |
| return container_of(panel, struct innolux_panel, base); |
| } |
| |
| static int innolux_panel_disable(struct drm_panel *panel) |
| { |
| struct innolux_panel *innolux = to_innolux_panel(panel); |
| |
| if (!innolux->enabled) |
| return 0; |
| |
| backlight_disable(innolux->backlight); |
| |
| innolux->enabled = false; |
| |
| return 0; |
| } |
| |
| static int innolux_panel_unprepare(struct drm_panel *panel) |
| { |
| struct innolux_panel *innolux = to_innolux_panel(panel); |
| int err; |
| |
| if (!innolux->prepared) |
| return 0; |
| |
| err = mipi_dsi_dcs_set_display_off(innolux->link); |
| if (err < 0) |
| DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n", |
| err); |
| |
| err = mipi_dsi_dcs_enter_sleep_mode(innolux->link); |
| if (err < 0) { |
| DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n", |
| err); |
| return err; |
| } |
| |
| if (innolux->desc->sleep_mode_delay) |
| msleep(innolux->desc->sleep_mode_delay); |
| |
| gpiod_set_value_cansleep(innolux->enable_gpio, 0); |
| |
| if (innolux->desc->power_down_delay) |
| msleep(innolux->desc->power_down_delay); |
| |
| err = regulator_bulk_disable(innolux->desc->num_supplies, |
| innolux->supplies); |
| if (err < 0) |
| return err; |
| |
| innolux->prepared = false; |
| |
| return 0; |
| } |
| |
| static int innolux_panel_prepare(struct drm_panel *panel) |
| { |
| struct innolux_panel *innolux = to_innolux_panel(panel); |
| int err; |
| |
| if (innolux->prepared) |
| return 0; |
| |
| gpiod_set_value_cansleep(innolux->enable_gpio, 0); |
| |
| err = regulator_bulk_enable(innolux->desc->num_supplies, |
| innolux->supplies); |
| if (err < 0) |
| return err; |
| |
| /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */ |
| usleep_range(20000, 21000); |
| |
| gpiod_set_value_cansleep(innolux->enable_gpio, 1); |
| |
| /* p079zca: t4, p097pfg: t5 */ |
| usleep_range(20000, 21000); |
| |
| if (innolux->desc->init_cmds) { |
| const struct panel_init_cmd *cmds = |
| innolux->desc->init_cmds; |
| unsigned int i; |
| |
| for (i = 0; cmds[i].len != 0; i++) { |
| const struct panel_init_cmd *cmd = &cmds[i]; |
| |
| err = mipi_dsi_generic_write(innolux->link, cmd->data, |
| cmd->len); |
| if (err < 0) { |
| dev_err(panel->dev, |
| "failed to write command %u\n", i); |
| goto poweroff; |
| } |
| |
| /* |
| * Included by random guessing, because without this |
| * (or at least, some delay), the panel sometimes |
| * didn't appear to pick up the command sequence. |
| */ |
| err = mipi_dsi_dcs_nop(innolux->link); |
| if (err < 0) { |
| dev_err(panel->dev, |
| "failed to send DCS nop: %d\n", err); |
| goto poweroff; |
| } |
| } |
| } |
| |
| err = mipi_dsi_dcs_exit_sleep_mode(innolux->link); |
| if (err < 0) { |
| DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n", |
| err); |
| goto poweroff; |
| } |
| |
| /* T6: 120ms - 1000ms*/ |
| msleep(120); |
| |
| err = mipi_dsi_dcs_set_display_on(innolux->link); |
| if (err < 0) { |
| DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n", |
| err); |
| goto poweroff; |
| } |
| |
| /* T7: 5ms */ |
| usleep_range(5000, 6000); |
| |
| innolux->prepared = true; |
| |
| return 0; |
| |
| poweroff: |
| gpiod_set_value_cansleep(innolux->enable_gpio, 0); |
| regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies); |
| |
| return err; |
| } |
| |
| static int innolux_panel_enable(struct drm_panel *panel) |
| { |
| struct innolux_panel *innolux = to_innolux_panel(panel); |
| int ret; |
| |
| if (innolux->enabled) |
| return 0; |
| |
| ret = backlight_enable(innolux->backlight); |
| if (ret) { |
| DRM_DEV_ERROR(panel->drm->dev, |
| "Failed to enable backlight %d\n", ret); |
| return ret; |
| } |
| |
| innolux->enabled = true; |
| |
| return 0; |
| } |
| |
| static const char * const innolux_p079zca_supply_names[] = { |
| "power", |
| }; |
| |
| static const struct drm_display_mode innolux_p079zca_mode = { |
| .clock = 56900, |
| .hdisplay = 768, |
| .hsync_start = 768 + 40, |
| .hsync_end = 768 + 40 + 40, |
| .htotal = 768 + 40 + 40 + 40, |
| .vdisplay = 1024, |
| .vsync_start = 1024 + 20, |
| .vsync_end = 1024 + 20 + 4, |
| .vtotal = 1024 + 20 + 4 + 20, |
| .vrefresh = 60, |
| }; |
| |
| static const struct panel_desc innolux_p079zca_panel_desc = { |
| .mode = &innolux_p079zca_mode, |
| .bpc = 8, |
| .size = { |
| .width = 120, |
| .height = 160, |
| }, |
| .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | |
| MIPI_DSI_MODE_LPM, |
| .format = MIPI_DSI_FMT_RGB888, |
| .lanes = 4, |
| .supply_names = innolux_p079zca_supply_names, |
| .num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names), |
| .power_down_delay = 80, /* T8: 80ms - 1000ms */ |
| }; |
| |
| static const char * const innolux_p097pfg_supply_names[] = { |
| "avdd", |
| "avee", |
| }; |
| |
| static const struct drm_display_mode innolux_p097pfg_mode = { |
| .clock = 229000, |
| .hdisplay = 1536, |
| .hsync_start = 1536 + 100, |
| .hsync_end = 1536 + 100 + 24, |
| .htotal = 1536 + 100 + 24 + 100, |
| .vdisplay = 2048, |
| .vsync_start = 2048 + 100, |
| .vsync_end = 2048 + 100 + 2, |
| .vtotal = 2048 + 100 + 2 + 18, |
| .vrefresh = 60, |
| }; |
| |
| /* |
| * Display manufacturer failed to provide init sequencing according to |
| * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/ |
| * so the init sequence stems from a register dump of a working panel. |
| */ |
| static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = { |
| /* page 0 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00), |
| _INIT_CMD(0xB1, 0xE8, 0x11), |
| _INIT_CMD(0xB2, 0x25, 0x02), |
| _INIT_CMD(0xB5, 0x08, 0x00), |
| _INIT_CMD(0xBC, 0x0F, 0x00), |
| _INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00), |
| _INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14), |
| _INIT_CMD(0x6F, 0x01), |
| _INIT_CMD(0xC0, 0x03), |
| _INIT_CMD(0x6F, 0x02), |
| _INIT_CMD(0xC1, 0x0D), |
| _INIT_CMD(0xD9, 0x01, 0x09, 0x70), |
| _INIT_CMD(0xC5, 0x12, 0x21, 0x00), |
| _INIT_CMD(0xBB, 0x93, 0x93), |
| |
| /* page 1 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01), |
| _INIT_CMD(0xB3, 0x3C, 0x3C), |
| _INIT_CMD(0xB4, 0x0F, 0x0F), |
| _INIT_CMD(0xB9, 0x45, 0x45), |
| _INIT_CMD(0xBA, 0x14, 0x14), |
| _INIT_CMD(0xCA, 0x02), |
| _INIT_CMD(0xCE, 0x04), |
| _INIT_CMD(0xC3, 0x9B, 0x9B), |
| _INIT_CMD(0xD8, 0xC0, 0x03), |
| _INIT_CMD(0xBC, 0x82, 0x01), |
| _INIT_CMD(0xBD, 0x9E, 0x01), |
| |
| /* page 2 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02), |
| _INIT_CMD(0xB0, 0x82), |
| _INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5, |
| 0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40), |
| _INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29, |
| 0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0), |
| _INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C, |
| 0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC), |
| _INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF), |
| _INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5, |
| 0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75), |
| _INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D, |
| 0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03), |
| _INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94, |
| 0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED), |
| _INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF), |
| |
| /* page 3 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03), |
| _INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00), |
| _INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00), |
| _INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85), |
| _INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80), |
| _INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, |
| 0x40, 0x80), |
| _INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C), |
| _INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C), |
| _INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80), |
| _INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80), |
| _INIT_CMD(0xC4, 0x00, 0x00), |
| _INIT_CMD(0xEF, 0x41), |
| |
| /* page 4 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04), |
| _INIT_CMD(0xEC, 0x4C), |
| |
| /* page 5 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05), |
| _INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01), |
| _INIT_CMD(0xB1, 0x30, 0x00), |
| _INIT_CMD(0xB2, 0x02, 0x02, 0x00), |
| _INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D), |
| _INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57), |
| _INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A), |
| _INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56), |
| _INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C), |
| _INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00), |
| _INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05), |
| _INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00), |
| _INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00), |
| _INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00), |
| |
| /* page 6 */ |
| _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06), |
| _INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F), |
| _INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12), |
| _INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D), |
| _INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), |
| _INIT_CMD(0xB4, 0x3D, 0x32), |
| _INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F), |
| _INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18), |
| _INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D), |
| _INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), |
| _INIT_CMD(0xB9, 0x3D, 0x32), |
| _INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F), |
| _INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17), |
| _INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D), |
| _INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), |
| _INIT_CMD(0xC4, 0x3D, 0x32), |
| _INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F), |
| _INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11), |
| _INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D), |
| _INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), |
| _INIT_CMD(0xC9, 0x3D, 0x32), |
| |
| {}, |
| }; |
| |
| static const struct panel_desc innolux_p097pfg_panel_desc = { |
| .mode = &innolux_p097pfg_mode, |
| .bpc = 8, |
| .size = { |
| .width = 147, |
| .height = 196, |
| }, |
| .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | |
| MIPI_DSI_MODE_LPM, |
| .format = MIPI_DSI_FMT_RGB888, |
| .init_cmds = innolux_p097pfg_init_cmds, |
| .lanes = 4, |
| .supply_names = innolux_p097pfg_supply_names, |
| .num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names), |
| .sleep_mode_delay = 100, /* T15 */ |
| }; |
| |
| static int innolux_panel_get_modes(struct drm_panel *panel) |
| { |
| struct innolux_panel *innolux = to_innolux_panel(panel); |
| const struct drm_display_mode *m = innolux->desc->mode; |
| struct drm_display_mode *mode; |
| |
| mode = drm_mode_duplicate(panel->drm, m); |
| if (!mode) { |
| DRM_DEV_ERROR(panel->drm->dev, "failed to add mode %ux%ux@%u\n", |
| m->hdisplay, m->vdisplay, m->vrefresh); |
| return -ENOMEM; |
| } |
| |
| drm_mode_set_name(mode); |
| |
| drm_mode_probed_add(panel->connector, mode); |
| |
| panel->connector->display_info.width_mm = |
| innolux->desc->size.width; |
| panel->connector->display_info.height_mm = |
| innolux->desc->size.height; |
| panel->connector->display_info.bpc = innolux->desc->bpc; |
| |
| return 1; |
| } |
| |
| static const struct drm_panel_funcs innolux_panel_funcs = { |
| .disable = innolux_panel_disable, |
| .unprepare = innolux_panel_unprepare, |
| .prepare = innolux_panel_prepare, |
| .enable = innolux_panel_enable, |
| .get_modes = innolux_panel_get_modes, |
| }; |
| |
| static const struct of_device_id innolux_of_match[] = { |
| { .compatible = "innolux,p079zca", |
| .data = &innolux_p079zca_panel_desc |
| }, |
| { .compatible = "innolux,p097pfg", |
| .data = &innolux_p097pfg_panel_desc |
| }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, innolux_of_match); |
| |
| static int innolux_panel_add(struct mipi_dsi_device *dsi, |
| const struct panel_desc *desc) |
| { |
| struct innolux_panel *innolux; |
| struct device *dev = &dsi->dev; |
| int err, i; |
| |
| innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL); |
| if (!innolux) |
| return -ENOMEM; |
| |
| innolux->desc = desc; |
| |
| innolux->supplies = devm_kcalloc(dev, desc->num_supplies, |
| sizeof(*innolux->supplies), |
| GFP_KERNEL); |
| if (!innolux->supplies) |
| return -ENOMEM; |
| |
| for (i = 0; i < desc->num_supplies; i++) |
| innolux->supplies[i].supply = desc->supply_names[i]; |
| |
| err = devm_regulator_bulk_get(dev, desc->num_supplies, |
| innolux->supplies); |
| if (err < 0) |
| return err; |
| |
| innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable", |
| GPIOD_OUT_HIGH); |
| if (IS_ERR(innolux->enable_gpio)) { |
| err = PTR_ERR(innolux->enable_gpio); |
| dev_dbg(dev, "failed to get enable gpio: %d\n", err); |
| innolux->enable_gpio = NULL; |
| } |
| |
| innolux->backlight = devm_of_find_backlight(dev); |
| if (IS_ERR(innolux->backlight)) |
| return PTR_ERR(innolux->backlight); |
| |
| drm_panel_init(&innolux->base); |
| innolux->base.funcs = &innolux_panel_funcs; |
| innolux->base.dev = dev; |
| |
| err = drm_panel_add(&innolux->base); |
| if (err < 0) |
| return err; |
| |
| mipi_dsi_set_drvdata(dsi, innolux); |
| innolux->link = dsi; |
| |
| return 0; |
| } |
| |
| static void innolux_panel_del(struct innolux_panel *innolux) |
| { |
| drm_panel_remove(&innolux->base); |
| } |
| |
| static int innolux_panel_probe(struct mipi_dsi_device *dsi) |
| { |
| const struct panel_desc *desc; |
| int err; |
| |
| desc = of_device_get_match_data(&dsi->dev); |
| dsi->mode_flags = desc->flags; |
| dsi->format = desc->format; |
| dsi->lanes = desc->lanes; |
| |
| err = innolux_panel_add(dsi, desc); |
| if (err < 0) |
| return err; |
| |
| return mipi_dsi_attach(dsi); |
| } |
| |
| static int innolux_panel_remove(struct mipi_dsi_device *dsi) |
| { |
| struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi); |
| int err; |
| |
| err = innolux_panel_unprepare(&innolux->base); |
| if (err < 0) |
| DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n", |
| err); |
| |
| err = innolux_panel_disable(&innolux->base); |
| if (err < 0) |
| DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err); |
| |
| err = mipi_dsi_detach(dsi); |
| if (err < 0) |
| DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n", |
| err); |
| |
| innolux_panel_del(innolux); |
| |
| return 0; |
| } |
| |
| static void innolux_panel_shutdown(struct mipi_dsi_device *dsi) |
| { |
| struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi); |
| |
| innolux_panel_unprepare(&innolux->base); |
| innolux_panel_disable(&innolux->base); |
| } |
| |
| static struct mipi_dsi_driver innolux_panel_driver = { |
| .driver = { |
| .name = "panel-innolux-p079zca", |
| .of_match_table = innolux_of_match, |
| }, |
| .probe = innolux_panel_probe, |
| .remove = innolux_panel_remove, |
| .shutdown = innolux_panel_shutdown, |
| }; |
| module_mipi_dsi_driver(innolux_panel_driver); |
| |
| MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>"); |
| MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>"); |
| MODULE_DESCRIPTION("Innolux P079ZCA panel driver"); |
| MODULE_LICENSE("GPL v2"); |