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Message-ID: <20210901180644.248177-2-y.oudjana@protonmail.com>
Date: Wed, 01 Sep 2021 18:07:24 +0000
From: Yassine Oudjana <y.oudjana@...tonmail.com>
To: Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>
Cc: Yassine Oudjana <y.oudjana@...tonmail.com>,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] drm/panel: Add driver for LG.Philips SW43101 DSI video mode panel
Add a driver for the LG.Philips SW43101 FHD (1080x1920) OLED DSI video mode panel.
This driver has been generated using linux-mdss-dsi-panel-driver-generator.
Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
---
drivers/gpu/drm/panel/Kconfig | 10 +
drivers/gpu/drm/panel/Makefile | 1 +
.../gpu/drm/panel/panel-lgphilips-sw43101.c | 331 ++++++++++++++++++
3 files changed, 342 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-lgphilips-sw43101.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index beb581b96ecd..d8741c35bbfc 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -226,6 +226,16 @@ config DRM_PANEL_SAMSUNG_LD9040
depends on OF && SPI
select VIDEOMODE_HELPERS
+config DRM_PANEL_LGPHILIPS_SW43101
+ tristate "LG.Philips SW43101 DSI video mode 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 the LG.Philips SW43101 FHD
+ (1080x1920) OLED DSI video mode panel found on the Xiaomi Mi Note 2.
+ To compile this driver as a module, choose M here.
+
config DRM_PANEL_LG_LB035Q02
tristate "LG LB035Q024573 RGB panel"
depends on GPIOLIB && OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index c8132050bcec..e79143ad14dd 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o
obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W) += panel-leadtek-ltk050h3146w.o
obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829) += panel-leadtek-ltk500hd1829.o
+obj-$(CONFIG_DRM_PANEL_LGPHILIPS_SW43101) += panel-lgphilips-sw43101.o
obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
diff --git a/drivers/gpu/drm/panel/panel-lgphilips-sw43101.c b/drivers/gpu/drm/panel/panel-lgphilips-sw43101.c
new file mode 100644
index 000000000000..ca8acd7590d2
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-lgphilips-sw43101.c
@@ -0,0 +1,331 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * LG.Philips SW43101 OLED Panel driver
+ * Generated with linux-mdss-dsi-panel-driver-generator
+ *
+ * Copyright (c) 2020 Yassine Oudjana <y.oudjana@...tonmail.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include <video/mipi_display.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct sw43101_device {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct gpio_desc *reset_gpio;
+ bool prepared;
+};
+
+static inline
+struct sw43101_device *to_sw43101_device(struct drm_panel *panel)
+{
+ return container_of(panel, struct sw43101_device, panel);
+}
+
+#define dsi_dcs_write_seq(dsi, seq...) do { \
+ static const u8 d[] = { seq }; \
+ int ret; \
+ ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+static void sw43101_reset(struct sw43101_device *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(1000, 2000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(20);
+}
+
+static int sw43101_on(struct sw43101_device *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ dsi_dcs_write_seq(dsi, 0xb0, 0x5a);
+ usleep_range(1000, 2000);
+ dsi_dcs_write_seq(dsi, 0xb2, 0x13, 0x12, 0x40, 0xd0, 0xff, 0xff, 0x15);
+ dsi_dcs_write_seq(dsi, 0xe3, 0x01);
+ usleep_range(1000, 2000);
+ dsi_dcs_write_seq(dsi, 0xf3, 0x03, 0x00, 0x00);
+
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x0020);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display brightness: %d\n", ret);
+ return ret;
+ }
+
+ dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+ dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+ dsi_dcs_write_seq(dsi, 0xb0, 0x00);
+ usleep_range(1000, 2000);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display on: %d\n", ret);
+ return ret;
+ }
+ msleep(20);
+
+ return 0;
+}
+
+static int sw43101_off(struct sw43101_device *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display off: %d\n", ret);
+ return ret;
+ }
+ usleep_range(2000, 3000);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(128);
+
+ return 0;
+}
+
+static int sw43101_prepare(struct drm_panel *panel)
+{
+ struct sw43101_device *ctx = to_sw43101_device(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ sw43101_reset(ctx);
+
+ ret = sw43101_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ return ret;
+ }
+
+ ctx->prepared = true;
+ return 0;
+}
+
+static int sw43101_unprepare(struct drm_panel *panel)
+{
+ struct sw43101_device *ctx = to_sw43101_device(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = sw43101_off(ctx);
+ if (ret < 0)
+ dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+ ctx->prepared = false;
+ return 0;
+}
+
+static const struct drm_display_mode sw43101_mode = {
+ .clock = (1080 + 56 + 8 + 60) * (1920 + 40 + 8 + 48) * 58 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 56,
+ .hsync_end = 1080 + 56 + 8,
+ .htotal = 1080 + 56 + 8 + 60,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 40,
+ .vsync_end = 1920 + 40 + 8,
+ .vtotal = 1920 + 40 + 8 + 48,
+ .width_mm = 71,
+ .height_mm = 126,
+};
+
+static int sw43101_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &sw43101_mode);
+ if (!mode)
+ return -ENOMEM;
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+ drm_mode_probed_add(connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs sw43101_panel_funcs = {
+ .prepare = sw43101_prepare,
+ .unprepare = sw43101_unprepare,
+ .get_modes = sw43101_get_modes,
+};
+
+static int sw43101_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = bl->props.brightness;
+ int ret;
+
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK ||
+ bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ return 0;
+}
+
+static int sw43101_bl_get_brightness(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = bl->props.brightness;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ return brightness & 0xff;
+}
+
+static const struct backlight_ops sw43101_bl_ops = {
+ .update_status = sw43101_bl_update_status,
+ .get_brightness = sw43101_bl_get_brightness,
+};
+
+static struct backlight_device *
+sw43101_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 255,
+ .max_brightness = 255,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &sw43101_bl_ops, &props);
+}
+
+static int sw43101_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct sw43101_device *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+ drm_panel_init(&ctx->panel, dev, &sw43101_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ctx->panel.backlight = sw43101_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+ "Failed to create backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sw43101_remove(struct mipi_dsi_device *dsi)
+{
+ struct sw43101_device *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_remove(&ctx->panel);
+
+ return 0;
+}
+
+static const struct of_device_id sw43101_of_match[] = {
+ { .compatible = "lgphilips,sw43101" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sw43101_of_match);
+
+static struct mipi_dsi_driver sw43101_driver = {
+ .probe = sw43101_probe,
+ .remove = sw43101_remove,
+ .driver = {
+ .name = "panel-lgphilips-sw43101",
+ .of_match_table = sw43101_of_match,
+ },
+};
+module_mipi_dsi_driver(sw43101_driver);
+
+MODULE_AUTHOR("Yassine Oudjana <y.oudjana@...tonmail.com>");
+MODULE_DESCRIPTION("LG.Philips SW43101 DSI video mode panel driver");
+MODULE_LICENSE("GPL v2");
--
2.33.0
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