Feiyang FY07024DI26A30-D is 1024x600, 4-lane MIPI-DSI LCD panel. Add panel driver for it. Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> --- Note: init sequence is referenced from https://github.com/longsleep/linux-pine64/blob/pine64-hacks-1.2/drivers/video/sunxi/disp2/disp/lcd/mb709_mipi.c drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + .../drm/panel/panel-feiyang-fy07024di26a30d.c | 305 ++++++++++++++++++ 3 files changed, 315 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index d0d4e60f5153..bc70896fe43c 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -47,6 +47,15 @@ config DRM_PANEL_SIMPLE that it can be automatically turned off when the panel goes into a low power state. +config DRM_PANEL_FEIYANG_FY07024DI26A30D + tristate "Feiyang FY07024DI26A30-D MIPI-DSI LCD 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 + Feiyang FY07024DI26A30-D MIPI-DSI interface. + config DRM_PANEL_ILITEK_IL9322 tristate "Ilitek ILI9322 320x240 QVGA panels" depends on OF && SPI diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 88011f06edb8..e23c017639c7 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_DRM_PANEL_ARM_VERSATILE) += panel-arm-versatile.o obj-$(CONFIG_DRM_PANEL_BANANAPI_S070WV20_ICN6211) += panel-bananapi-s070wv20-icn6211.o obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o +obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o diff --git a/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c new file mode 100644 index 000000000000..718631a72d8b --- /dev/null +++ b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c @@ -0,0 +1,305 @@ +// SPDX-License-Identifier: (GPL-2.0+ or MIT) +/* + * Copyright (C) 2018 Amarula Solutions + * Author: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> + */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/fb.h> +#include <linux/kernel.h> +#include <linux/module.h> + +#include <linux/gpio/consumer.h> +#include <linux/regulator/consumer.h> + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +#include <video/mipi_display.h> + +struct fy07024di26a30d { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + + struct backlight_device *backlight; + struct regulator *dvdd; + struct regulator *avdd; + struct gpio_desc *reset; + + bool is_enabled; + bool is_prepared; +}; + +static inline struct fy07024di26a30d *panel_to_fy07024di26a30d(struct drm_panel *panel) +{ + return container_of(panel, struct fy07024di26a30d, panel); +} + +struct fy07024di26a30d_init_cmd { + size_t len; + const char *data; +}; + +#define FY07024DI26A30D(...) { \ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +static const struct fy07024di26a30d_init_cmd fy07024di26a30d_init_cmds[] = { + FY07024DI26A30D(0x80, 0x58), + FY07024DI26A30D(0x81, 0x47), + FY07024DI26A30D(0x82, 0xD4), + FY07024DI26A30D(0x83, 0x88), + FY07024DI26A30D(0x84, 0xA9), + FY07024DI26A30D(0x85, 0xC3), + FY07024DI26A30D(0x86, 0x82), +}; + +static int fy07024di26a30d_prepare(struct drm_panel *panel) +{ + struct fy07024di26a30d *ctx = panel_to_fy07024di26a30d(panel); + struct mipi_dsi_device *dsi = ctx->dsi; + unsigned int i; + int ret; + + if (ctx->is_prepared) + return 0; + + gpiod_set_value(ctx->reset, 1); + msleep(50); + + gpiod_set_value(ctx->reset, 0); + msleep(20); + + gpiod_set_value(ctx->reset, 1); + msleep(200); + + for (i = 0; i < ARRAY_SIZE(fy07024di26a30d_init_cmds); i++) { + const struct fy07024di26a30d_init_cmd *cmd = + &fy07024di26a30d_init_cmds[i]; + + ret = mipi_dsi_dcs_write_buffer(dsi, cmd->data, cmd->len); + if (ret < 0) + return ret; + } + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + dev_err(panel->dev, "failed to set display on: %d\n", ret); + return ret; + } + + ctx->is_prepared = true; + + return 0; +} + +static int fy07024di26a30d_enable(struct drm_panel *panel) +{ + struct fy07024di26a30d *ctx = panel_to_fy07024di26a30d(panel); + + if (ctx->is_enabled) + return 0; + + msleep(120); + + backlight_enable(ctx->backlight); + ctx->is_enabled = true; + + return 0; +} + +static int fy07024di26a30d_disable(struct drm_panel *panel) +{ + struct fy07024di26a30d *ctx = panel_to_fy07024di26a30d(panel); + + if (!ctx->is_enabled) + return 0; + + backlight_disable(ctx->backlight); + ctx->is_enabled = false; + + return 0; +} + +static int fy07024di26a30d_unprepare(struct drm_panel *panel) +{ + struct fy07024di26a30d *ctx = panel_to_fy07024di26a30d(panel); + int ret; + + if (!ctx->is_prepared) + return 0; + + ret = mipi_dsi_dcs_set_display_off(ctx->dsi); + if (ret < 0) + dev_err(panel->dev, "failed to set display off: %d\n", ret); + + ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi); + if (ret < 0) + dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret); + + msleep(100); + + regulator_disable(ctx->avdd); + + regulator_disable(ctx->dvdd); + + gpiod_set_value(ctx->reset, 0); + + gpiod_set_value(ctx->reset, 1); + + gpiod_set_value(ctx->reset, 0); + + ctx->is_prepared = false; + + return 0; +} + +static const struct drm_display_mode fy07024di26a30d_default_mode = { + .clock = 55000, + .vrefresh = 60, + + .hdisplay = 1024, + .hsync_start = 1024 + 396, + .hsync_end = 1024 + 396 + 20, + .htotal = 1024 + 396 + 20 + 100, + + .vdisplay = 600, + .vsync_start = 600 + 12, + .vsync_end = 600 + 12 + 2, + .vtotal = 600 + 12 + 2 + 21, +}; + +static int fy07024di26a30d_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct fy07024di26a30d *ctx = panel_to_fy07024di26a30d(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &fy07024di26a30d_default_mode); + if (!mode) { + dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n", + fy07024di26a30d_default_mode.hdisplay, + fy07024di26a30d_default_mode.vdisplay, + fy07024di26a30d_default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + + return 1; +} + +static const struct drm_panel_funcs fy07024di26a30d_funcs = { + .disable = fy07024di26a30d_disable, + .unprepare = fy07024di26a30d_unprepare, + .prepare = fy07024di26a30d_prepare, + .enable = fy07024di26a30d_enable, + .get_modes = fy07024di26a30d_get_modes, +}; + +static int fy07024di26a30d_dsi_probe(struct mipi_dsi_device *dsi) +{ + struct device_node *np; + struct fy07024di26a30d *ctx; + int ret; + + ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + mipi_dsi_set_drvdata(dsi, ctx); + ctx->dsi = dsi; + + drm_panel_init(&ctx->panel); + ctx->panel.dev = &dsi->dev; + ctx->panel.funcs = &fy07024di26a30d_funcs; + + ctx->dvdd = devm_regulator_get(&dsi->dev, "dvdd"); + if (IS_ERR(ctx->dvdd)) { + dev_err(&dsi->dev, "Couldn't get dvdd regulator\n"); + return PTR_ERR(ctx->dvdd); + } + + ctx->avdd = devm_regulator_get(&dsi->dev, "avdd"); + if (IS_ERR(ctx->avdd)) { + dev_err(&dsi->dev, "Couldn't get avdd regulator\n"); + return PTR_ERR(ctx->avdd); + } + + ret = regulator_enable(ctx->dvdd); + if (ret) + return ret; + + msleep(100); + + ret = regulator_enable(ctx->avdd); + if (ret) + return ret; + + msleep(5); + + ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset)) { + dev_err(&dsi->dev, "Couldn't get our reset GPIO\n"); + return PTR_ERR(ctx->reset); + } + + np = of_parse_phandle(dsi->dev.of_node, "backlight", 0); + if (np) { + ctx->backlight = of_find_backlight_by_node(np); + of_node_put(np); + + if (!ctx->backlight) + return -EPROBE_DEFER; + } + + ret = drm_panel_add(&ctx->panel); + if (ret < 0) + return ret; + + dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->lanes = 4; + + return mipi_dsi_attach(dsi); +} + +static int fy07024di26a30d_dsi_remove(struct mipi_dsi_device *dsi) +{ + struct fy07024di26a30d *ctx = mipi_dsi_get_drvdata(dsi); + + mipi_dsi_detach(dsi); + drm_panel_remove(&ctx->panel); + + if (ctx->backlight) + put_device(&ctx->backlight->dev); + + return 0; +} + +static const struct of_device_id fy07024di26a30d_of_match[] = { + { .compatible = "feiyang,fy07024di26a30d", }, + { } +}; +MODULE_DEVICE_TABLE(of, fy07024di26a30d_of_match); + +static struct mipi_dsi_driver fy07024di26a30d_driver = { + .probe = fy07024di26a30d_dsi_probe, + .remove = fy07024di26a30d_dsi_remove, + .driver = { + .name = "feiyang-fy07024di26a30d", + .of_match_table = fy07024di26a30d_of_match, + }, +}; +module_mipi_dsi_driver(fy07024di26a30d_driver); + +MODULE_AUTHOR("Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>"); +MODULE_DESCRIPTION("Feiyang FY07024DI26A30-D MIPI-DSI LCD panel"); +MODULE_LICENSE("GPL v2"); -- 2.18.0.321.gffc6fa0e3
