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The same panel PCB comes with parallel RBG which is supported via panel-simple driver with "bananapi,s070wv20-ct16" compatible. Signed-off-by: Jagan Teki --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + .../panel/panel-bananapi-s070wv20-icn6211.c | 293 ++++++++++++++++++ 3 files changed, 303 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-bananapi-s070wv20-icn6211.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index e36dbb4df867..d0cb2fa3e721 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -17,6 +17,15 @@ config DRM_PANEL_ARM_VERSATILE reference designs. The panel is detected using special registers in the Versatile family syscon registers. +config DRM_PANEL_BANANAPI_S070WV20_ICN6211 + tristate "Bananapi S070WV20-CT16 ICN6211 MIPI-DSI to RGB bridge panel driver" + 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 + Bananapi S070WV20-CT16 MIPI-DSI controller. + config DRM_PANEL_LVDS tristate "Generic LVDS panel driver" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 78e3dc376bdd..a68e990a4a73 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 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 diff --git a/drivers/gpu/drm/panel/panel-bananapi-s070wv20-icn6211.c b/drivers/gpu/drm/panel/panel-bananapi-s070wv20-icn6211.c new file mode 100644 index 000000000000..52a5b60278af --- /dev/null +++ b/drivers/gpu/drm/panel/panel-bananapi-s070wv20-icn6211.c @@ -0,0 +1,293 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 Amarula Solutions + * Author: Jagan Teki + */ + +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +struct s070wv20 { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + + struct backlight_device *backlight; + struct regulator *vdd; + struct gpio_desc *enable_gpio; + struct gpio_desc *reset_gpio; +}; + +static inline struct s070wv20 *panel_to_s070wv20(struct drm_panel *panel) +{ + return container_of(panel, struct s070wv20, panel); +} + +struct s070wv20_init_cmd { + size_t len; + const char *data; +}; + +#define S070WV20_INIT_CMD(...) { \ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +static const struct s070wv20_init_cmd s070wv20_init_cmds[] = { + S070WV20_INIT_CMD(0x7A, 0xC1), + S070WV20_INIT_CMD(0x20, 0x20), + S070WV20_INIT_CMD(0x21, 0xE0), + S070WV20_INIT_CMD(0x22, 0x13), + S070WV20_INIT_CMD(0x23, 0x28), + S070WV20_INIT_CMD(0x24, 0x30), + S070WV20_INIT_CMD(0x25, 0x28), + S070WV20_INIT_CMD(0x26, 0x00), + S070WV20_INIT_CMD(0x27, 0x0D), + S070WV20_INIT_CMD(0x28, 0x03), + S070WV20_INIT_CMD(0x29, 0x1D), + S070WV20_INIT_CMD(0x34, 0x80), + S070WV20_INIT_CMD(0x36, 0x28), + S070WV20_INIT_CMD(0xB5, 0xA0), + S070WV20_INIT_CMD(0x5C, 0xFF), + S070WV20_INIT_CMD(0x2A, 0x01), + S070WV20_INIT_CMD(0x56, 0x92), + S070WV20_INIT_CMD(0x6B, 0x71), + S070WV20_INIT_CMD(0x69, 0x2B), + S070WV20_INIT_CMD(0x10, 0x40), + S070WV20_INIT_CMD(0x11, 0x98), + S070WV20_INIT_CMD(0xB6, 0x20), + S070WV20_INIT_CMD(0x51, 0x20), + S070WV20_INIT_CMD(0x09, 0x10), +}; + +static int s070wv20_prepare(struct drm_panel *panel) +{ + struct s070wv20 *ctx = panel_to_s070wv20(panel); + struct mipi_dsi_device *dsi = ctx->dsi; + unsigned int i; + int ret; + + ret = regulator_enable(ctx->vdd); + if (ret) + return ret; + + msleep(50); + + gpiod_set_value(ctx->reset_gpio, 1); + msleep(50); + + gpiod_set_value(ctx->enable_gpio, 1); + msleep(50); + + gpiod_set_value(ctx->reset_gpio, 0); + msleep(50); + + gpiod_set_value(ctx->reset_gpio, 1); + msleep(20); + + for (i = 0; i < ARRAY_SIZE(s070wv20_init_cmds); i++) { + const struct s070wv20_init_cmd *cmd = &s070wv20_init_cmds[i]; + + ret = mipi_dsi_generic_write(dsi, cmd->data, cmd->len); + if (ret < 0) + return ret; + + msleep(10); + } + + return 0; +} + +static int s070wv20_enable(struct drm_panel *panel) +{ + struct s070wv20 *ctx = panel_to_s070wv20(panel); + + msleep(120); + + mipi_dsi_dcs_set_display_on(ctx->dsi); + backlight_enable(ctx->backlight); + + return 0; +} + +static int s070wv20_disable(struct drm_panel *panel) +{ + struct s070wv20 *ctx = panel_to_s070wv20(panel); + + backlight_disable(ctx->backlight); + return mipi_dsi_dcs_set_display_on(ctx->dsi); +} + +static int s070wv20_unprepare(struct drm_panel *panel) +{ + struct s070wv20 *ctx = panel_to_s070wv20(panel); + int ret; + + 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); + + gpiod_set_value(ctx->reset_gpio, 0); + + gpiod_set_value(ctx->reset_gpio, 1); + + gpiod_set_value(ctx->enable_gpio, 0); + + gpiod_set_value(ctx->reset_gpio, 0); + + regulator_disable(ctx->vdd); + + return 0; +} + +static const struct drm_display_mode s070wv20_default_mode = { + .clock = 30000, + .vrefresh = 60, + + .hdisplay = 800, + .hsync_start = 800 + 40, + .hsync_end = 800 + 40 + 48, + .htotal = 800 + 40 + 48 + 40, + + .vdisplay = 480, + .vsync_start = 480 + 13, + .vsync_end = 480 + 13 + 3, + .vtotal = 480 + 13 + 3 + 29, + + .width_mm = 86, + .height_mm = 154, +}; + +static int s070wv20_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct s070wv20 *ctx = panel_to_s070wv20(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &s070wv20_default_mode); + if (!mode) { + dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n", + s070wv20_default_mode.hdisplay, + s070wv20_default_mode.vdisplay, + s070wv20_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); + + 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 s070wv20_funcs = { + .disable = s070wv20_disable, + .unprepare = s070wv20_unprepare, + .prepare = s070wv20_prepare, + .enable = s070wv20_enable, + .get_modes = s070wv20_get_modes, +}; + +static int s070wv20_dsi_probe(struct mipi_dsi_device *dsi) +{ + struct device_node *np; + struct s070wv20 *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 = &s070wv20_funcs; + + ctx->vdd = devm_regulator_get(&dsi->dev, "vdd"); + if (IS_ERR(ctx->vdd)) { + dev_err(&dsi->dev, "Couldn't get vdd regulator\n"); + return PTR_ERR(ctx->vdd); + } + + ctx->enable_gpio = devm_gpiod_get(&dsi->dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(ctx->enable_gpio)) { + dev_err(&dsi->dev, "Couldn't get our enable GPIO\n"); + return PTR_ERR(ctx->enable_gpio); + } + + ctx->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) { + dev_err(&dsi->dev, "Couldn't get our reset GPIO\n"); + return PTR_ERR(ctx->reset_gpio); + } + + 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_SYNC_PULSE; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->lanes = 4; + + return mipi_dsi_attach(dsi); +} + +static int s070wv20_dsi_remove(struct mipi_dsi_device *dsi) +{ + struct s070wv20 *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 s070wv20_of_match[] = { + { .compatible = "bananapi,s070wv20-ct16-icn6211", }, + { } +}; +MODULE_DEVICE_TABLE(of, s070wv20_of_match); + +static struct mipi_dsi_driver s070wv20_driver = { + .probe = s070wv20_dsi_probe, + .remove = s070wv20_dsi_remove, + .driver = { + .name = "bananapi-s070wv20-ct16-icn6211", + .of_match_table = s070wv20_of_match, + }, +}; +module_mipi_dsi_driver(s070wv20_driver); + +MODULE_AUTHOR("Jagan Teki "); +MODULE_DESCRIPTION("Bananapi S070WV20-CT16 ICN6211 MIPI-DSI to RGB"); +MODULE_LICENSE("GPL v2");