[v5,2/3] drm/panel: Add Ilitek ILI9881c panel driver

Message ID	acb5453112ab7c7b801cf4f1669e351b391e77e8.1527587352.git-series.maxime.ripard@bootlin.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <dri-devel-bounces@lists.freedesktop.org> From: Maxime Ripard <maxime.ripard@bootlin.com> To: Thierry Reding <thierry.reding@gmail.com>, Chen-Yu Tsai <wens@csie.org>, Maxime Ripard <maxime.ripard@bootlin.com> Subject: [PATCH v5 2/3] drm/panel: Add Ilitek ILI9881c panel driver Date: Tue, 29 May 2018 11:49:15 +0200 Message-Id: <acb5453112ab7c7b801cf4f1669e351b391e77e8.1527587352.git-series.maxime.ripard@bootlin.com> In-Reply-To: <cover.e73f3ed1a9adc36fc1648d563cd967ec99219839.1527587352.git-series.maxime.ripard@bootlin.com> References: <cover.e73f3ed1a9adc36fc1648d563cd967ec99219839.1527587352.git-series.maxime.ripard@bootlin.com> In-Reply-To: <cover.e73f3ed1a9adc36fc1648d563cd967ec99219839.1527587352.git-series.maxime.ripard@bootlin.com> References: <cover.e73f3ed1a9adc36fc1648d563cd967ec99219839.1527587352.git-series.maxime.ripard@bootlin.com> Precedence: list Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Daniel Vetter <daniel.vetter@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 25682ff3449a..6020c30a33b3 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -46,6 +46,15 @@ config DRM_PANEL_ILITEK_IL9322 Say Y here if you want to enable support for Ilitek IL9322 QVGA (320x240) RGB, YUV and ITU-T BT.656 panels. +config DRM_PANEL_ILITEK_ILI9881C + tristate "Ilitek ILI9881C-based panels" + 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 + Ilitek ILI9881c controller. + config DRM_PANEL_INNOLUX_P079ZCA tristate "Innolux P079ZCA panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index f26efc11d746..5ccaaa9d13af 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_LVDS) += panel-lvds.o obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o obj-$(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 obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c new file mode 100644 index 000000000000..e848af235df5 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c @@ -0,0 +1,503 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2017-2018, Bootlin + */ + +#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 ili9881c { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + + struct backlight_device *backlight; + struct regulator *power; + struct gpio_desc *reset; +}; + +enum ili9881c_op { + ILI9881C_SWITCH_PAGE, + ILI9881C_COMMAND, +}; + +struct ili9881c_instr { + enum ili9881c_op op; + + union arg { + struct cmd { + u8 cmd; + u8 data; + } cmd; + u8 page; + } arg; +}; + +#define ILI9881C_SWITCH_PAGE_INSTR(_page) \ + { \ + .op = ILI9881C_SWITCH_PAGE, \ + .arg = { \ + .page = (_page), \ + }, \ + } + +#define ILI9881C_COMMAND_INSTR(_cmd, _data) \ + { \ + .op = ILI9881C_COMMAND, \ + .arg = { \ + .cmd = { \ + .cmd = (_cmd), \ + .data = (_data), \ + }, \ + }, \ + } + +static const struct ili9881c_instr ili9881c_init[] = { + ILI9881C_SWITCH_PAGE_INSTR(3), + ILI9881C_COMMAND_INSTR(0x01, 0x00), + ILI9881C_COMMAND_INSTR(0x02, 0x00), + ILI9881C_COMMAND_INSTR(0x03, 0x73), + ILI9881C_COMMAND_INSTR(0x04, 0x03), + ILI9881C_COMMAND_INSTR(0x05, 0x00), + ILI9881C_COMMAND_INSTR(0x06, 0x06), + ILI9881C_COMMAND_INSTR(0x07, 0x06), + ILI9881C_COMMAND_INSTR(0x08, 0x00), + ILI9881C_COMMAND_INSTR(0x09, 0x18), + ILI9881C_COMMAND_INSTR(0x0a, 0x04), + ILI9881C_COMMAND_INSTR(0x0b, 0x00), + ILI9881C_COMMAND_INSTR(0x0c, 0x02), + ILI9881C_COMMAND_INSTR(0x0d, 0x03), + ILI9881C_COMMAND_INSTR(0x0e, 0x00), + ILI9881C_COMMAND_INSTR(0x0f, 0x25), + ILI9881C_COMMAND_INSTR(0x10, 0x25), + ILI9881C_COMMAND_INSTR(0x11, 0x00), + ILI9881C_COMMAND_INSTR(0x12, 0x00), + ILI9881C_COMMAND_INSTR(0x13, 0x00), + ILI9881C_COMMAND_INSTR(0x14, 0x00), + ILI9881C_COMMAND_INSTR(0x15, 0x00), + ILI9881C_COMMAND_INSTR(0x16, 0x0C), + ILI9881C_COMMAND_INSTR(0x17, 0x00), + ILI9881C_COMMAND_INSTR(0x18, 0x00), + ILI9881C_COMMAND_INSTR(0x19, 0x00), + ILI9881C_COMMAND_INSTR(0x1a, 0x00), + ILI9881C_COMMAND_INSTR(0x1b, 0x00), + ILI9881C_COMMAND_INSTR(0x1c, 0x00), + ILI9881C_COMMAND_INSTR(0x1d, 0x00), + ILI9881C_COMMAND_INSTR(0x1e, 0xC0), + ILI9881C_COMMAND_INSTR(0x1f, 0x80), + ILI9881C_COMMAND_INSTR(0x20, 0x04), + ILI9881C_COMMAND_INSTR(0x21, 0x01), + ILI9881C_COMMAND_INSTR(0x22, 0x00), + ILI9881C_COMMAND_INSTR(0x23, 0x00), + ILI9881C_COMMAND_INSTR(0x24, 0x00), + ILI9881C_COMMAND_INSTR(0x25, 0x00), + ILI9881C_COMMAND_INSTR(0x26, 0x00), + ILI9881C_COMMAND_INSTR(0x27, 0x00), + ILI9881C_COMMAND_INSTR(0x28, 0x33), + ILI9881C_COMMAND_INSTR(0x29, 0x03), + ILI9881C_COMMAND_INSTR(0x2a, 0x00), + ILI9881C_COMMAND_INSTR(0x2b, 0x00), + ILI9881C_COMMAND_INSTR(0x2c, 0x00), + ILI9881C_COMMAND_INSTR(0x2d, 0x00), + ILI9881C_COMMAND_INSTR(0x2e, 0x00), + ILI9881C_COMMAND_INSTR(0x2f, 0x00), + ILI9881C_COMMAND_INSTR(0x30, 0x00), + ILI9881C_COMMAND_INSTR(0x31, 0x00), + ILI9881C_COMMAND_INSTR(0x32, 0x00), + ILI9881C_COMMAND_INSTR(0x33, 0x00), + ILI9881C_COMMAND_INSTR(0x34, 0x04), + ILI9881C_COMMAND_INSTR(0x35, 0x00), + ILI9881C_COMMAND_INSTR(0x36, 0x00), + ILI9881C_COMMAND_INSTR(0x37, 0x00), + ILI9881C_COMMAND_INSTR(0x38, 0x3C), + ILI9881C_COMMAND_INSTR(0x39, 0x00), + ILI9881C_COMMAND_INSTR(0x3a, 0x00), + ILI9881C_COMMAND_INSTR(0x3b, 0x00), + ILI9881C_COMMAND_INSTR(0x3c, 0x00), + ILI9881C_COMMAND_INSTR(0x3d, 0x00), + ILI9881C_COMMAND_INSTR(0x3e, 0x00), + ILI9881C_COMMAND_INSTR(0x3f, 0x00), + ILI9881C_COMMAND_INSTR(0x40, 0x00), + ILI9881C_COMMAND_INSTR(0x41, 0x00), + ILI9881C_COMMAND_INSTR(0x42, 0x00), + ILI9881C_COMMAND_INSTR(0x43, 0x00), + ILI9881C_COMMAND_INSTR(0x44, 0x00), + ILI9881C_COMMAND_INSTR(0x50, 0x01), + ILI9881C_COMMAND_INSTR(0x51, 0x23), + ILI9881C_COMMAND_INSTR(0x52, 0x45), + ILI9881C_COMMAND_INSTR(0x53, 0x67), + ILI9881C_COMMAND_INSTR(0x54, 0x89), + ILI9881C_COMMAND_INSTR(0x55, 0xab), + ILI9881C_COMMAND_INSTR(0x56, 0x01), + ILI9881C_COMMAND_INSTR(0x57, 0x23), + ILI9881C_COMMAND_INSTR(0x58, 0x45), + ILI9881C_COMMAND_INSTR(0x59, 0x67), + ILI9881C_COMMAND_INSTR(0x5a, 0x89), + ILI9881C_COMMAND_INSTR(0x5b, 0xab), + ILI9881C_COMMAND_INSTR(0x5c, 0xcd), + ILI9881C_COMMAND_INSTR(0x5d, 0xef), + ILI9881C_COMMAND_INSTR(0x5e, 0x11), + ILI9881C_COMMAND_INSTR(0x5f, 0x02), + ILI9881C_COMMAND_INSTR(0x60, 0x02), + ILI9881C_COMMAND_INSTR(0x61, 0x02), + ILI9881C_COMMAND_INSTR(0x62, 0x02), + ILI9881C_COMMAND_INSTR(0x63, 0x02), + ILI9881C_COMMAND_INSTR(0x64, 0x02), + ILI9881C_COMMAND_INSTR(0x65, 0x02), + ILI9881C_COMMAND_INSTR(0x66, 0x02), + ILI9881C_COMMAND_INSTR(0x67, 0x02), + ILI9881C_COMMAND_INSTR(0x68, 0x02), + ILI9881C_COMMAND_INSTR(0x69, 0x02), + ILI9881C_COMMAND_INSTR(0x6a, 0x0C), + ILI9881C_COMMAND_INSTR(0x6b, 0x02), + ILI9881C_COMMAND_INSTR(0x6c, 0x0F), + ILI9881C_COMMAND_INSTR(0x6d, 0x0E), + ILI9881C_COMMAND_INSTR(0x6e, 0x0D), + ILI9881C_COMMAND_INSTR(0x6f, 0x06), + ILI9881C_COMMAND_INSTR(0x70, 0x07), + ILI9881C_COMMAND_INSTR(0x71, 0x02), + ILI9881C_COMMAND_INSTR(0x72, 0x02), + ILI9881C_COMMAND_INSTR(0x73, 0x02), + ILI9881C_COMMAND_INSTR(0x74, 0x02), + ILI9881C_COMMAND_INSTR(0x75, 0x02), + ILI9881C_COMMAND_INSTR(0x76, 0x02), + ILI9881C_COMMAND_INSTR(0x77, 0x02), + ILI9881C_COMMAND_INSTR(0x78, 0x02), + ILI9881C_COMMAND_INSTR(0x79, 0x02), + ILI9881C_COMMAND_INSTR(0x7a, 0x02), + ILI9881C_COMMAND_INSTR(0x7b, 0x02), + ILI9881C_COMMAND_INSTR(0x7c, 0x02), + ILI9881C_COMMAND_INSTR(0x7d, 0x02), + ILI9881C_COMMAND_INSTR(0x7e, 0x02), + ILI9881C_COMMAND_INSTR(0x7f, 0x02), + ILI9881C_COMMAND_INSTR(0x80, 0x0C), + ILI9881C_COMMAND_INSTR(0x81, 0x02), + ILI9881C_COMMAND_INSTR(0x82, 0x0F), + ILI9881C_COMMAND_INSTR(0x83, 0x0E), + ILI9881C_COMMAND_INSTR(0x84, 0x0D), + ILI9881C_COMMAND_INSTR(0x85, 0x06), + ILI9881C_COMMAND_INSTR(0x86, 0x07), + ILI9881C_COMMAND_INSTR(0x87, 0x02), + ILI9881C_COMMAND_INSTR(0x88, 0x02), + ILI9881C_COMMAND_INSTR(0x89, 0x02), + ILI9881C_COMMAND_INSTR(0x8A, 0x02), + ILI9881C_SWITCH_PAGE_INSTR(4), + ILI9881C_COMMAND_INSTR(0x6C, 0x15), + ILI9881C_COMMAND_INSTR(0x6E, 0x22), + ILI9881C_COMMAND_INSTR(0x6F, 0x33), + ILI9881C_COMMAND_INSTR(0x3A, 0xA4), + ILI9881C_COMMAND_INSTR(0x8D, 0x0D), + ILI9881C_COMMAND_INSTR(0x87, 0xBA), + ILI9881C_COMMAND_INSTR(0x26, 0x76), + ILI9881C_COMMAND_INSTR(0xB2, 0xD1), + ILI9881C_SWITCH_PAGE_INSTR(1), + ILI9881C_COMMAND_INSTR(0x22, 0x0A), + ILI9881C_COMMAND_INSTR(0x53, 0xDC), + ILI9881C_COMMAND_INSTR(0x55, 0xA7), + ILI9881C_COMMAND_INSTR(0x50, 0x78), + ILI9881C_COMMAND_INSTR(0x51, 0x78), + ILI9881C_COMMAND_INSTR(0x31, 0x02), + ILI9881C_COMMAND_INSTR(0x60, 0x14), + ILI9881C_COMMAND_INSTR(0xA0, 0x2A), + ILI9881C_COMMAND_INSTR(0xA1, 0x39), + ILI9881C_COMMAND_INSTR(0xA2, 0x46), + ILI9881C_COMMAND_INSTR(0xA3, 0x0e), + ILI9881C_COMMAND_INSTR(0xA4, 0x12), + ILI9881C_COMMAND_INSTR(0xA5, 0x25), + ILI9881C_COMMAND_INSTR(0xA6, 0x19), + ILI9881C_COMMAND_INSTR(0xA7, 0x1d), + ILI9881C_COMMAND_INSTR(0xA8, 0xa6), + ILI9881C_COMMAND_INSTR(0xA9, 0x1C), + ILI9881C_COMMAND_INSTR(0xAA, 0x29), + ILI9881C_COMMAND_INSTR(0xAB, 0x85), + ILI9881C_COMMAND_INSTR(0xAC, 0x1C), + ILI9881C_COMMAND_INSTR(0xAD, 0x1B), + ILI9881C_COMMAND_INSTR(0xAE, 0x51), + ILI9881C_COMMAND_INSTR(0xAF, 0x22), + ILI9881C_COMMAND_INSTR(0xB0, 0x2d), + ILI9881C_COMMAND_INSTR(0xB1, 0x4f), + ILI9881C_COMMAND_INSTR(0xB2, 0x59), + ILI9881C_COMMAND_INSTR(0xB3, 0x3F), + ILI9881C_COMMAND_INSTR(0xC0, 0x2A), + ILI9881C_COMMAND_INSTR(0xC1, 0x3a), + ILI9881C_COMMAND_INSTR(0xC2, 0x45), + ILI9881C_COMMAND_INSTR(0xC3, 0x0e), + ILI9881C_COMMAND_INSTR(0xC4, 0x11), + ILI9881C_COMMAND_INSTR(0xC5, 0x24), + ILI9881C_COMMAND_INSTR(0xC6, 0x1a), + ILI9881C_COMMAND_INSTR(0xC7, 0x1c), + ILI9881C_COMMAND_INSTR(0xC8, 0xaa), + ILI9881C_COMMAND_INSTR(0xC9, 0x1C), + ILI9881C_COMMAND_INSTR(0xCA, 0x29), + ILI9881C_COMMAND_INSTR(0xCB, 0x96), + ILI9881C_COMMAND_INSTR(0xCC, 0x1C), + ILI9881C_COMMAND_INSTR(0xCD, 0x1B), + ILI9881C_COMMAND_INSTR(0xCE, 0x51), + ILI9881C_COMMAND_INSTR(0xCF, 0x22), + ILI9881C_COMMAND_INSTR(0xD0, 0x2b), + ILI9881C_COMMAND_INSTR(0xD1, 0x4b), + ILI9881C_COMMAND_INSTR(0xD2, 0x59), + ILI9881C_COMMAND_INSTR(0xD3, 0x3F), +}; + +static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel) +{ + return container_of(panel, struct ili9881c, panel); +} + +/* + * The panel seems to accept some private DCS commands that map + * directly to registers. + * + * It is organised by page, with each page having its own set of + * registers, and the first page looks like it's holding the standard + * DCS commands. + * + * So before any attempt at sending a command or data, we have to be + * sure if we're in the right page or not. + */ +static int ili9881c_switch_page(struct ili9881c *ctx, u8 page) +{ + u8 buf[4] = { 0xff, 0x98, 0x81, page }; + int ret; + + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf)); + if (ret < 0) + return ret; + + return 0; +} + +static int ili9881c_send_cmd_data(struct ili9881c *ctx, u8 cmd, u8 data) +{ + u8 buf[2] = { cmd, data }; + int ret; + + ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf)); + if (ret < 0) + return ret; + + return 0; +} + +static int ili9881c_prepare(struct drm_panel *panel) +{ + struct ili9881c *ctx = panel_to_ili9881c(panel); + unsigned int i; + int ret; + + /* Power the panel */ + ret = regulator_enable(ctx->power); + if (ret) + return ret; + msleep(5); + + /* And reset it */ + gpiod_set_value(ctx->reset, 1); + msleep(20); + + gpiod_set_value(ctx->reset, 0); + msleep(20); + + for (i = 0; i < ARRAY_SIZE(ili9881c_init); i++) { + const struct ili9881c_instr *instr = &ili9881c_init[i]; + + if (instr->op == ILI9881C_SWITCH_PAGE) + ret = ili9881c_switch_page(ctx, instr->arg.page); + else if (instr->op == ILI9881C_COMMAND) + ret = ili9881c_send_cmd_data(ctx, instr->arg.cmd.cmd, + instr->arg.cmd.data); + + if (ret) + return ret; + } + + ret = ili9881c_switch_page(ctx, 0); + if (ret) + return ret; + + ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); + if (ret) + return ret; + + mipi_dsi_dcs_exit_sleep_mode(ctx->dsi); + if (ret) + return ret; + + return 0; +} + +static int ili9881c_enable(struct drm_panel *panel) +{ + struct ili9881c *ctx = panel_to_ili9881c(panel); + + msleep(120); + + mipi_dsi_dcs_set_display_on(ctx->dsi); + backlight_enable(ctx->backlight); + + return 0; +} + +static int ili9881c_disable(struct drm_panel *panel) +{ + struct ili9881c *ctx = panel_to_ili9881c(panel); + + backlight_disable(ctx->backlight); + return mipi_dsi_dcs_set_display_off(ctx->dsi); +} + +static int ili9881c_unprepare(struct drm_panel *panel) +{ + struct ili9881c *ctx = panel_to_ili9881c(panel); + + mipi_dsi_dcs_enter_sleep_mode(ctx->dsi); + regulator_disable(ctx->power); + gpiod_set_value(ctx->reset, 1); + + return 0; +} + +static const struct drm_display_mode bananapi_default_mode = { + .clock = 62000, + .vrefresh = 60, + + .hdisplay = 720, + .hsync_start = 720 + 10, + .hsync_end = 720 + 10 + 20, + .htotal = 720 + 10 + 20 + 30, + + .vdisplay = 1280, + .vsync_start = 1280 + 10, + .vsync_end = 1280 + 10 + 10, + .vtotal = 1280 + 10 + 10 + 20, +}; + +static int ili9881c_get_modes(struct drm_panel *panel) +{ + struct drm_connector *connector = panel->connector; + struct ili9881c *ctx = panel_to_ili9881c(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &bananapi_default_mode); + if (!mode) { + dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n", + bananapi_default_mode.hdisplay, + bananapi_default_mode.vdisplay, + bananapi_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 = 62; + panel->connector->display_info.height_mm = 110; + + return 1; +} + +static const struct drm_panel_funcs ili9881c_funcs = { + .prepare = ili9881c_prepare, + .unprepare = ili9881c_unprepare, + .enable = ili9881c_enable, + .disable = ili9881c_disable, + .get_modes = ili9881c_get_modes, +}; + +static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi) +{ + struct device_node *np; + struct ili9881c *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 = &ili9881c_funcs; + + ctx->power = devm_regulator_get(&dsi->dev, "power"); + if (IS_ERR(ctx->power)) { + dev_err(&dsi->dev, "Couldn't get our power regulator\n"); + return PTR_ERR(ctx->power); + } + + 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_SYNC_PULSE; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->lanes = 4; + + return mipi_dsi_attach(dsi); +} + +static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi) +{ + struct ili9881c *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 ili9881c_of_match[] = { + { .compatible = "bananapi,lhr050h41" }, + { } +}; +MODULE_DEVICE_TABLE(of, ili9881c_of_match); + +static struct mipi_dsi_driver ili9881c_dsi_driver = { + .probe = ili9881c_dsi_probe, + .remove = ili9881c_dsi_remove, + .driver = { + .name = "ili9881c-dsi", + .of_match_table = ili9881c_of_match, + }, +}; +module_mipi_dsi_driver(ili9881c_dsi_driver); + +MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>"); +MODULE_DESCRIPTION("Ilitek ILI9881C Controller Driver"); +MODULE_LICENSE("GPL v2");

[v5,2/3] drm/panel: Add Ilitek ILI9881c panel driver

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