// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd */ #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/of.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> 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 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; 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) dev_err(panel->dev, "failed to set display off: %d\n", err); err = mipi_dsi_dcs_enter_sleep_mode(innolux->link); if (err < 0) { dev_err(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) { dev_err(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) { dev_err(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); if (innolux->enabled) return 0; 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, }; 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, }; /* * 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 drm_connector *connector) { 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(connector->dev, m); if (!mode) { dev_err(panel->dev, "failed to add mode %ux%u@%u\n", m->hdisplay, m->vdisplay, drm_mode_vrefresh(m)); return -ENOMEM; } drm_mode_set_name(mode); drm_mode_probed_add(connector, mode); connector->display_info.width_mm = innolux->desc->size.width; connector->display_info.height_mm = innolux->desc->size.height; 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; } drm_panel_init(&innolux->base, dev, &innolux_panel_funcs, DRM_MODE_CONNECTOR_DSI); err = drm_panel_of_backlight(&innolux->base); if (err) return err; drm_panel_add(&innolux->base); 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; struct innolux_panel *innolux; 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; err = mipi_dsi_attach(dsi); if (err < 0) { innolux = mipi_dsi_get_drvdata(dsi); innolux_panel_del(innolux); return err; } return 0; } static void innolux_panel_remove(struct mipi_dsi_device *dsi) { struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi); int err; err = drm_panel_unprepare(&innolux->base); if (err < 0) dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err); err = drm_panel_disable(&innolux->base); if (err < 0) dev_err(&dsi->dev, "failed to disable panel: %d\n", err); err = mipi_dsi_detach(dsi); if (err < 0) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); innolux_panel_del(innolux); } static void innolux_panel_shutdown(struct mipi_dsi_device *dsi) { struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi); drm_panel_unprepare(&innolux->base); drm_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");