The starry panel is based on ER88577 controller. Add a driver for it. Signed-off-by: Zhaoxiong Lv <lvzhaoxi...@huaqin.corp-partner.google.com> --- Chage since V2:
- add the Makefile and Kconfig files V1: https://lore.kernel.org/all/20240509064959.23550-3-lvzhaoxi...@huaqin.corp-partner.google.com/ --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-starry-er88577.c | 444 +++++++++++++++++++ 3 files changed, 454 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-starry-er88577.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 2c73086cf102..c075b1875ca6 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -795,6 +795,15 @@ config DRM_PANEL_SONY_TULIP_TRULY_NT35521 NT35521 1280x720 video mode panel as found on Sony Xperia M4 Aqua phone. +config DRM_PANEL_STARRY_ER88577 + tristate "Starry er88577 panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y if you want to enable support for panels based on the + Starry er88577 controller. + config DRM_PANEL_STARTEK_KD070FHFID015 tristate "STARTEK KD070FHFID015 panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index cbd414b98bb0..d18917e0e192 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LS060T1SX01) += panel-sharp-ls060t1sx01.o obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o +obj-$(CONFIG_DRM_PANEL_STARRY_ER88577) += panel-starry-er88577.o obj-$(CONFIG_DRM_PANEL_SYNAPTICS_R63353) += panel-synaptics-r63353.o obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o obj-$(CONFIG_DRM_PANEL_SONY_TD4353_JDI) += panel-sony-td4353-jdi.o diff --git a/drivers/gpu/drm/panel/panel-starry-er88577.c b/drivers/gpu/drm/panel/panel-starry-er88577.c new file mode 100644 index 000000000000..dfeae549adc5 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-starry-er88577.c @@ -0,0 +1,444 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Panels based on the ER88577B display controller. + * Author: Zhaoxiong Lv <lvzhaoxi...@huaqin.corp-partner.google.com> + */ + +#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 <drm/drm_connector.h> +#include <drm/drm_crtc.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> + +#include <video/mipi_display.h> + +struct panel_desc { + const struct drm_display_mode *modes; + unsigned int bpc; + + /** + * @width_mm: width of the panel's active display area + * @height_mm: height of the panel's active display area + */ + struct { + unsigned int width_mm; + unsigned int height_mm; + } size; + + unsigned long mode_flags; + enum mipi_dsi_pixel_format format; + const struct panel_init_cmd *init_cmds; + unsigned int lanes; + bool discharge_on_disable; + bool lp11_before_reset; +}; + +struct starry_panel { + struct drm_panel base; + struct mipi_dsi_device *dsi; + + const struct panel_desc *desc; + + enum drm_panel_orientation orientation; + struct regulator *pp3300; + struct gpio_desc *enable_gpio; +}; + +enum dsi_cmd_type { + INIT_DCS_CMD, + DELAY_CMD, +}; + +struct panel_init_cmd { + enum dsi_cmd_type type; + size_t len; + const char *data; +}; + +#define _INIT_DCS_CMD(...) { \ + .type = INIT_DCS_CMD, \ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +#define _INIT_DELAY_CMD(...) { \ + .type = DELAY_CMD,\ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +static const struct panel_init_cmd starry_er88577_init_cmd[] = { + _INIT_DELAY_CMD(120), + _INIT_DCS_CMD(0xE0, 0xAB, 0xBA), + _INIT_DCS_CMD(0xE1, 0xBA, 0xAB), + _INIT_DCS_CMD(0xB1, 0x10, 0x01, 0x47, 0xFF), + _INIT_DCS_CMD(0xB2, 0x0C, 0x14, 0x04, 0x50, 0x50, 0x14), + _INIT_DCS_CMD(0xB3, 0x56, 0x53, 0x00), + _INIT_DCS_CMD(0xB4, 0x33, 0x30, 0x04), + _INIT_DCS_CMD(0xB6, 0xB0, 0x00, 0x00, 0x10, 0x00, 0x10, 0x00), + _INIT_DCS_CMD(0xB8, 0x05, 0x12, 0x29, 0x49, 0x40), + _INIT_DCS_CMD(0xB9, 0x7C, 0x61, 0x4F, 0x42, 0x3E, 0x2D, 0x31, 0x1A, 0x33, 0x33, 0x33, 0x52, 0x40, 0x47, 0x38, 0x34, 0x26, 0x0E, 0x06, 0x7C, 0x61, 0x4F, 0x42, 0x3E, 0x2D, 0x31, 0x1A, 0x33, 0x33, 0x33, 0x52, 0x40, 0x47, 0x38, 0x34, 0x26, 0x0E, 0x06), + _INIT_DCS_CMD(0xC0, 0xCC, 0x76, 0x12, 0x34, 0x44, 0x44, 0x44, 0x44, 0x98, 0x04, 0x98, 0x04, 0x0F, 0x00, 0x00, 0xC1), + _INIT_DCS_CMD(0xC1, 0x54, 0x94, 0x02, 0x85, 0x9F, 0x00, 0x6F, 0x00, 0x54, 0x00), + _INIT_DCS_CMD(0xC2, 0x17, 0x09, 0x08, 0x89, 0x08, 0x11, 0x22, 0x20, 0x44, 0xFF, 0x18, 0x00), + _INIT_DCS_CMD(0xC3, 0x87, 0x47, 0x05, 0x05, 0x1C, 0x1C, 0x1D, 0x1D, 0x02, 0x1E, 0x1E, 0x1F, 0x1F, 0x0F, 0x0F, 0x0D, 0x0D, 0x13, 0x13, 0x11, 0x11, 0x24), + _INIT_DCS_CMD(0xC4, 0x06, 0x06, 0x04, 0x04, 0x1C, 0x1C, 0x1D, 0x1D, 0x02, 0x1E, 0x1E, 0x1F, 0x1F, 0x0E, 0x0E, 0x0C, 0x0C, 0x12, 0x12, 0x10, 0x10, 0x24), + + _INIT_DCS_CMD(0xC8, 0x21, 0x00, 0x31, 0x42, 0x34, 0x16), + _INIT_DCS_CMD(0xCA, 0xCB, 0x43), + _INIT_DCS_CMD(0xCD, 0x0E, 0x4B, 0x4B, 0x20, 0x19, 0x6B, 0x06, 0xB3), + _INIT_DCS_CMD(0xD2, 0xE3, 0x2B, 0x38, 0x08), + _INIT_DCS_CMD(0xD4, 0x00, 0x01, 0x00, 0x0E, 0x04, 0x44, 0x08, 0x10, 0x00, 0x00, 0x00), + _INIT_DCS_CMD(0xE6, 0x80, 0x09, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF), + _INIT_DCS_CMD(0xF0, 0x12, 0x03, 0x20, 0x00, 0xFF), + _INIT_DCS_CMD(0xF3, 0x00), + + _INIT_DCS_CMD(0X11), + _INIT_DELAY_CMD(120), + _INIT_DCS_CMD(0X29), + _INIT_DELAY_CMD(20), + {}, +}; + +static inline struct starry_panel *to_starry_panel(struct drm_panel *panel) +{ + return container_of(panel, struct starry_panel, base); +} + +static int starry_panel_init_dcs_cmd(struct starry_panel *starry) +{ + struct mipi_dsi_device *dsi = starry->dsi; + struct drm_panel *panel = &starry->base; + int i, err = 0; + + if (starry->desc->init_cmds) { + const struct panel_init_cmd *init_cmds = starry->desc->init_cmds; + + for (i = 0; init_cmds[i].len != 0; i++) { + const struct panel_init_cmd *cmd = &init_cmds[i]; + + switch (cmd->type) { + case DELAY_CMD: + msleep(cmd->data[0]); + err = 0; + break; + + case INIT_DCS_CMD: + err = mipi_dsi_dcs_write(dsi, cmd->data[0], + cmd->len <= 1 ? NULL : + &cmd->data[1], + cmd->len - 1); + break; + + default: + err = -EINVAL; + } + + if (err < 0) { + dev_err(panel->dev, + "failed to write command %u\n", i); + return err; + } + } + } + return 0; +} + +static int starry_panel_enter_sleep_mode(struct starry_panel *starry) +{ + struct mipi_dsi_device *dsi = starry->dsi; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + usleep_range(1000, 2000); + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) + return ret; + + return 0; +} + +static int starry_panel_disable(struct drm_panel *panel) +{ + struct starry_panel *starry = to_starry_panel(panel); + int ret; + + ret = starry_panel_enter_sleep_mode(starry); + if (ret < 0) { + dev_err(panel->dev, "failed to set panel off: %d\n", ret); + return ret; + } + + msleep(120); + + return 0; +} + +static int starry_panel_unprepare(struct drm_panel *panel) +{ + struct starry_panel *starry = to_starry_panel(panel); + int err; +/* + err = mipi_dsi_dcs_enter_sleep_mode(starry->dsi); + if (err < 0) { + dev_err(panel->dev, "failed to enter sleep mode: %d\n", err); + return err; + } +*/ + gpiod_set_value_cansleep(starry->enable_gpio, 0); + + /* T15: 2ms */ + usleep_range(1000, 2000); + + err = regulator_disable(starry->pp3300); + if (err < 0) + return err; + + return 0; +} + +static int starry_panel_prepare(struct drm_panel *panel) +{ + struct starry_panel *starry = to_starry_panel(panel); + int ret; + + gpiod_set_value(starry->enable_gpio, 0); + + printk(KERN_ERR "lvzhaoxiong--1"); + + ret = regulator_enable(starry->pp3300); + if (ret < 0) + return ret; + + /* T1: 5ms */ + usleep_range(5000, 6000); + + if (starry->desc->lp11_before_reset) { + mipi_dsi_dcs_nop(starry->dsi); + usleep_range(1000, 2000); + } + printk(KERN_ERR "lvzhaoxiong--3"); + + /* T: 60ms*/ + msleep(60); + + gpiod_set_value_cansleep(starry->enable_gpio, 1); + + ret = starry_panel_init_dcs_cmd(starry); + if (ret < 0) { + dev_err(panel->dev, "failed to init panel: %d\n", ret); + goto poweroff; + } + printk(KERN_ERR "lvzhaoxiong--3"); + + return 0; + +poweroff: + regulator_disable(starry->pp3300); + /* T6: 2ms */ + usleep_range(1000, 2000); + gpiod_set_value(starry->enable_gpio, 0); + + return ret; +} + +static int starry_panel_enable(struct drm_panel *panel) +{ + msleep(130); + return 0; +} + +static const struct drm_display_mode starry_er88577_default_mode = { + .clock = 77380, + .hdisplay = 800, + .hsync_start = 800 + 80, + .hsync_end = 800 + 80 + 20, + .htotal = 800 + 80 + 20 + 80, + .vdisplay = 1280, + .vsync_start = 1280 + 20, + .vsync_end = 1280 + 20 + 4, + .vtotal = 1280 + 20 + 4 + 12, + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, +}; + +static const struct panel_desc starry_er88577_desc = { + .modes = &starry_er88577_default_mode, + .bpc = 8, + .size = { + .width_mm = 135, + .height_mm = 216, + }, + .lanes = 4, + .format = MIPI_DSI_FMT_RGB888, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_LPM, + .init_cmds = starry_er88577_init_cmd, + .lp11_before_reset = true, +}; + +static int starry_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct starry_panel *starry = to_starry_panel(panel); + const struct drm_display_mode *m = starry->desc->modes; + 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; + } + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(mode); + drm_mode_probed_add(connector, mode); + + connector->display_info.width_mm = starry->desc->size.width_mm; + connector->display_info.height_mm = starry->desc->size.height_mm; + connector->display_info.bpc = starry->desc->bpc; + + return 1; +} + +static enum drm_panel_orientation starry_panel_get_orientation(struct drm_panel *panel) +{ + struct starry_panel *starry = to_starry_panel(panel); + + return starry->orientation; +} + +static const struct drm_panel_funcs starry_panel_funcs = { + .disable = starry_panel_disable, + .unprepare = starry_panel_unprepare, + .prepare = starry_panel_prepare, + .enable = starry_panel_enable, + .get_modes = starry_panel_get_modes, + .get_orientation = starry_panel_get_orientation, +}; + +static int starry_panel_add(struct starry_panel *starry) +{ + struct device *dev = &starry->dsi->dev; + int err; + + starry->pp3300 = devm_regulator_get(dev, "pp3300"); + if (IS_ERR(starry->pp3300)) + return PTR_ERR(starry->pp3300); + + + starry->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(starry->enable_gpio)) { + dev_err(dev, "cannot get reset-gpios %ld\n", + PTR_ERR(starry->enable_gpio)); + return PTR_ERR(starry->enable_gpio); + } + + gpiod_set_value(starry->enable_gpio, 0); + + drm_panel_init(&starry->base, dev, &starry_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + err = of_drm_get_panel_orientation(dev->of_node, &starry->orientation); + if (err < 0) { + dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); + return err; + } + + err = drm_panel_of_backlight(&starry->base); + if (err) + return err; + + starry->base.funcs = &starry_panel_funcs; + starry->base.dev = &starry->dsi->dev; + + drm_panel_add(&starry->base); + + return 0; +} + +static int starry_panel_probe(struct mipi_dsi_device *dsi) +{ + struct starry_panel *starry; + int ret; + const struct panel_desc *desc; + + starry = devm_kzalloc(&dsi->dev, sizeof(*starry), GFP_KERNEL); + if (!starry) + return -ENOMEM; + + desc = of_device_get_match_data(&dsi->dev); + dsi->lanes = desc->lanes; + dsi->format = desc->format; + dsi->mode_flags = desc->mode_flags; + starry->desc = desc; + starry->dsi = dsi; + ret = starry_panel_add(starry); + if (ret < 0) + return ret; + + mipi_dsi_set_drvdata(dsi, starry); + + ret = mipi_dsi_attach(dsi); + if (ret) + drm_panel_remove(&starry->base); + + printk(KERN_ERR "lvzhaoxiong--0"); + + return ret; +} + +static void starry_panel_shutdown(struct mipi_dsi_device *dsi) +{ + struct starry_panel *starry = mipi_dsi_get_drvdata(dsi); + + drm_panel_disable(&starry->base); + drm_panel_unprepare(&starry->base); +} + +static void starry_panel_remove(struct mipi_dsi_device *dsi) +{ + struct starry_panel *starry = mipi_dsi_get_drvdata(dsi); + int ret; + + starry_panel_shutdown(dsi); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); + + if (starry->base.dev) + drm_panel_remove(&starry->base); +} + +static const struct of_device_id starry_of_match[] = { + { .compatible = "starry,er88577", + .data = &starry_er88577_desc + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, starry_of_match); + +static struct mipi_dsi_driver starry_panel_driver = { + .driver = { + .name = "panel-starry-er88577", + .of_match_table = starry_of_match, + }, + .probe = starry_panel_probe, + .remove = starry_panel_remove, + .shutdown = starry_panel_shutdown, +}; +module_mipi_dsi_driver(starry_panel_driver); + +MODULE_AUTHOR("Zhaoxiong Lv <lvzhaoxi...@huaqin.corp-partner.google.com>"); +MODULE_DESCRIPTION("starry er88577b 800x1280 video mode panel driver"); +MODULE_LICENSE("GPL v2"); -- 2.17.1
