[PATCH v2 9/9] drm/panel: Add Ronbo RB070D30 panel

Maxime Ripard
2019-02-08T09:55:27Z

From: Konstantin Sudakov <k.sudakov@integrasources.com>

The Ronbo RB070D30 panel is a MIPI-DSI panel based on a Fitipower EK79007
controller and a 1024x600 panel.

Signed-off-by: Konstantin Sudakov <k.sudakov@integrasources.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
drivers/gpu/drm/panel/Kconfig | 9 +-
drivers/gpu/drm/panel/Makefile | 1 +-
drivers/gpu/drm/panel/panel-ronbo-rb070d30.c | 262 ++++++++++++++++++++-
3 files changed, 272 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-ronbo-rb070d30.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 3f3537719beb..870dcdbf2601 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -138,6 +138,15 @@ config DRM_PANEL_RAYDIUM_RM68200
Say Y here if you want to enable support for Raydium RM68200
720x1280 DSI video mode panel.

+config DRM_PANEL_RONBO_RB070D30
+ tristate "Ronbo Electronics RB070D30 panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y here if you want to enable support for Ronbo Electronics
+ RB070D30 1024x600 DSI panel.
+
config DRM_PANEL_SAMSUNG_S6D16D0
tristate "Samsung S6D16D0 DSI video mode panel"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 4396658a7996..4a103d346809 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
+obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
diff --git a/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c b/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
new file mode 100644
index 000000000000..0fd67bc49927
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018-2019, Bridge Systems BV
+ * Copyright (C) 2018-2019, Bootlin
+ * Copyright (C) 2017, Free Electrons
+ *
+ * This file based on panel-ilitek-ili9881c.c
+ */
+
+#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/media-bus-format.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 <drm/drm_print.h>
+
+#include <video/mipi_display.h>
+#include <video/of_display_timing.h>
+#include <video/videomode.h>
+
+struct rb070d30_panel {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct backlight_device *backlight;
+ struct regulator *supply;
+
+ struct {
+ struct gpio_desc *power;
+ struct gpio_desc *reset;
+ struct gpio_desc *updn;
+ struct gpio_desc *shlr;
+ } gpios;
+};
+
+static inline struct rb070d30_panel *panel_to_rb070d30_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct rb070d30_panel, panel);
+}
+
+static int rb070d30_panel_prepare(struct drm_panel *panel)
+{
+ struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
+ int ret;
+
+ ret = regulator_enable(ctx->supply);
+ if (ret < 0) {
+ DRM_DEV_ERROR(&ctx->dsi->dev, "Failed to enable supply: %d\n", ret);
+ return ret;
+ }
+
+ /* Reset */
+ msleep(20);
+ gpiod_set_value(ctx->gpios.power, 1);
+ msleep(20);
+ gpiod_set_value(ctx->gpios.reset, 1);
+ msleep(20);
+ return 0;
+}
+
+static int rb070d30_panel_unprepare(struct drm_panel *panel)
+{
+ struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
+
+ gpiod_set_value(ctx->gpios.reset, 0);
+ gpiod_set_value(ctx->gpios.power, 0);
+ regulator_disable(ctx->supply);
+
+ return 0;
+}
+
+static int rb070d30_panel_enable(struct drm_panel *panel)
+{
+ struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
+ int ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
+ if (ret)
+ return ret;
+
+ ret = backlight_enable(ctx->backlight);
+ if (ret)
+ goto out;
+
+ return 0;
+
+out:
+ mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
+ return ret;
+}
+
+static int rb070d30_panel_disable(struct drm_panel *panel)
+{
+ struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
+
+ backlight_disable(ctx->backlight);
+ return mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
+}
+
+/* Default timings */
+static const struct drm_display_mode default_mode = {
+ .clock = 51206,
+ .hdisplay = 1024,
+ .hsync_start = 1024 + 160,
+ .hsync_end = 1024 + 160 + 80,
+ .htotal = 1024 + 160 + 80 + 80,
+ .vdisplay = 600,
+ .vsync_start = 600 + 12,
+ .vsync_end = 600 + 12 + 10,
+ .vtotal = 600 + 12 + 10 + 13,
+ .vrefresh = 60,
+
+ .width_mm = 154,
+ .height_mm = 85,
+};
+
+static int rb070d30_panel_get_modes(struct drm_panel *panel)
+{
+ struct drm_connector *connector = panel->connector;
+ struct rb070d30_panel *ctx = panel_to_rb070d30_panel(panel);
+ struct drm_display_mode *mode;
+ static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+
+ mode = drm_mode_duplicate(panel->drm, &default_mode);
+ if (!mode) {
+ DRM_DEV_ERROR(&ctx->dsi->dev,
+ "Failed to add mode " DRM_MODE_FMT "\n",
+ DRM_MODE_ARG(mode));
+ return -EINVAL;
+ }
+
+ 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.bpc = 8;
+ panel->connector->display_info.width_mm = mode->width_mm;
+ panel->connector->display_info.height_mm = mode->height_mm;
+ drm_display_info_set_bus_formats(&connector->display_info,
+ &bus_format, 1);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs rb070d30_panel_funcs = {
+ .get_modes = rb070d30_panel_get_modes,
+ .prepare = rb070d30_panel_prepare,
+ .enable = rb070d30_panel_enable,
+ .disable = rb070d30_panel_disable,
+ .unprepare = rb070d30_panel_unprepare,
+};
+
+static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
+{
+ struct rb070d30_panel *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supply = devm_regulator_get(&dsi->dev, "vcc-lcd");
+ if (IS_ERR(ctx->supply))
+ return PTR_ERR(ctx->supply);
+
+ mipi_dsi_set_drvdata(dsi, ctx);
+ ctx->dsi = dsi;
+
+ drm_panel_init(&ctx->panel);
+ ctx->panel.dev = &dsi->dev;
+ ctx->panel.funcs = &rb070d30_panel_funcs;
+
+ ctx->gpios.reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->gpios.reset)) {
+ DRM_DEV_ERROR(&dsi->dev, "Couldn't get our reset GPIO\n");
+ return PTR_ERR(ctx->gpios.reset);
+ }
+
+ ctx->gpios.power = devm_gpiod_get(&dsi->dev, "power", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->gpios.power)) {
+ DRM_DEV_ERROR(&dsi->dev, "Couldn't get our power GPIO\n");
+ return PTR_ERR(ctx->gpios.power);
+ }
+
+ /*
+ * We don't change the state of that GPIO later on but we need
+ * to force it into a low state.
+ */
+ ctx->gpios.updn = devm_gpiod_get(&dsi->dev, "updn", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->gpios.updn)) {
+ DRM_DEV_ERROR(&dsi->dev, "Couldn't get our updn GPIO\n");
+ return PTR_ERR(ctx->gpios.updn);
+ }
+
+ /*
+ * We don't change the state of that GPIO later on but we need
+ * to force it into a low state.
+ */
+ ctx->gpios.shlr = devm_gpiod_get(&dsi->dev, "shlr", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->gpios.shlr)) {
+ DRM_DEV_ERROR(&dsi->dev, "Couldn't get our shlr GPIO\n");
+ return PTR_ERR(ctx->gpios.shlr);
+ }
+
+ ctx->backlight = devm_of_find_backlight(&dsi->dev);
+ if (IS_ERR(ctx->backlight)) {
+ DRM_DEV_ERROR(&dsi->dev, "Couldn't get our backlight\n");
+ return PTR_ERR(ctx->backlight);
+ }
+
+ ret = drm_panel_add(&ctx->panel);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->lanes = 4;
+
+ return mipi_dsi_attach(dsi);
+}
+
+static int rb070d30_panel_dsi_remove(struct mipi_dsi_device *dsi)
+{
+ struct rb070d30_panel *ctx = mipi_dsi_get_drvdata(dsi);
+
+ mipi_dsi_detach(dsi);
+ drm_panel_remove(&ctx->panel);
+
+ return 0;
+}
+
+static const struct of_device_id rb070d30_panel_of_match[] = {
+ { .compatible = "ronbo,rb070d30" },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, rb070d30_panel_of_match);
+
+static struct mipi_dsi_driver rb070d30_panel_driver = {
+ .probe = rb070d30_panel_dsi_probe,
+ .remove = rb070d30_panel_dsi_remove,
+ .driver = {
+ .name = "panel-ronbo-rb070d30",
+ .of_match_table = rb070d30_panel_of_match,
+ },
+};
+module_mipi_dsi_driver(rb070d30_panel_driver);
+
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@bootlin.com>");
+MODULE_AUTHOR("Konstantin Sudakov <k.sudakov@integrasources.com>");
+MODULE_DESCRIPTION("Ronbo RB070D30 Panel Driver");
+MODULE_LICENSE("GPL");