Add a driver for panel used in LG Optimus 2X P990. Panel is 4" WVGA MIPI DBI Type B linked to DRM encoder via RGB to DBI bridge.
Signed-off-by: Svyatoslav Ryhel <[email protected]> --- drivers/gpu/drm/panel/Kconfig | 13 ++ drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-lg-lh400wv3.c | 236 ++++++++++++++++++++++ 3 files changed, 250 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-lg-lh400wv3.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index f9e4441dad1c0..0d3845c9bd477 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -553,6 +553,19 @@ config DRM_PANEL_LG_LG4573 Say Y here if you want to enable support for LG4573 RGB panel. To compile this driver as a module, choose M here. +config DRM_PANEL_LG_LH400WV3 + tristate "LG LH400WV3 MIPI DBI Type B panel" + depends on OF + depends on BACKLIGHT_CLASS_DEVICE + select DRM_MIPI_DBI + select VIDEOMODE_HELPERS + help + Say Y here if you want to enable support for the LG LH400WV3 MIPI + DBI Type B panel found in the LG Optimus 2X P990 smartphone. + + To compile this driver as a module, choose M here: the module will + be called panel-lg-lh400wv3. + config DRM_PANEL_LG_SW43408 tristate "LG SW43408 panel" depends on GPIOLIB diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 414267a49d922..842a2a973777f 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_DRM_PANEL_LINCOLNTECH_LCD197) += panel-lincolntech-lcd197.o obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o obj-$(CONFIG_DRM_PANEL_LG_LD070WX3) += panel-lg-ld070wx3.o obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o +obj-$(CONFIG_DRM_PANEL_LG_LH400WV3) += panel-lg-lh400wv3.o obj-$(CONFIG_DRM_PANEL_LG_SW43408) += panel-lg-sw43408.o obj-$(CONFIG_DRM_PANEL_LXD_M9189A) += panel-lxd-m9189a.o obj-$(CONFIG_DRM_PANEL_MAGNACHIP_D53E6EA8966) += panel-magnachip-d53e6ea8966.o diff --git a/drivers/gpu/drm/panel/panel-lg-lh400wv3.c b/drivers/gpu/drm/panel/panel-lg-lh400wv3.c new file mode 100644 index 0000000000000..cb2a09699fc6d --- /dev/null +++ b/drivers/gpu/drm/panel/panel-lg-lh400wv3.c @@ -0,0 +1,236 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/array_size.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/gpio/consumer.h> +#include <linux/media-bus-format.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> + +#include <drm/drm_mipi_dbi.h> +#include <drm/drm_modes.h> +#include <drm/drm_of.h> +#include <drm/drm_panel.h> +#include <drm/drm_probe_helper.h> + +static const struct regulator_bulk_data lg_lh400wv3_supplies[] = { + { .supply = "avci" }, { .supply = "iovcc" }, +}; + +struct lg_lh400wv3 { + struct drm_panel panel; + struct mipi_dbi *dbi; + + struct regulator_bulk_data *supplies; + struct gpio_desc *reset_gpio; +}; + +static inline struct lg_lh400wv3 *to_lg_lh400wv3(struct drm_panel *panel) +{ + return container_of(panel, struct lg_lh400wv3, panel); +} + +#define panel_dbi_command(priv, cmd, seq...) \ +({ \ + const u8 d[] = { seq }; \ + struct drm_panel *panel = &(priv)->panel; \ + struct device *dev = panel->dev; \ + int ret; \ + ret = mipi_dbi_command_stackbuf((priv)->dbi, cmd, d, ARRAY_SIZE(d)); \ + if (ret) \ + dev_err_ratelimited(dev, "error %d when sending command %#02x\n", ret, cmd); \ + ret; \ +}) + +static int lg_lh400wv3_prepare(struct drm_panel *panel) +{ + struct lg_lh400wv3 *priv = to_lg_lh400wv3(panel); + struct device *dev = panel->dev; + int ret; + + priv->dbi = dev_get_drvdata(dev->parent); + if (!priv->dbi) + return -ENODEV; + + gpiod_set_value_cansleep(priv->reset_gpio, 1); + + ret = regulator_bulk_enable(ARRAY_SIZE(lg_lh400wv3_supplies), priv->supplies); + if (ret) { + dev_err(dev, "failed to enable power supplies: %d\n", ret); + return ret; + } + + usleep_range(1000, 2000); + + gpiod_set_value_cansleep(priv->reset_gpio, 0); + + usleep_range(10000, 11000); + + return 0; +}; + +static int lg_lh400wv3_enable(struct drm_panel *panel) +{ + struct lg_lh400wv3 *priv = to_lg_lh400wv3(panel); + + panel_dbi_command(priv, MIPI_DCS_EXIT_INVERT_MODE); + panel_dbi_command(priv, MIPI_DCS_SET_TEAR_ON); + + panel_dbi_command(priv, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_24BIT | + MIPI_DCS_PIXEL_FMT_24BIT << 4); + + panel_dbi_command(priv, 0xb2, 0x00, 0xc8); + panel_dbi_command(priv, 0xb3, 0x00); + panel_dbi_command(priv, 0xb4, 0x04); + panel_dbi_command(priv, 0xb5, 0x42, 0x10, 0x10, 0x00, 0x20); + panel_dbi_command(priv, 0xb6, 0x0b, 0x0f, 0x3c, 0x13, 0x13, 0xe8); + panel_dbi_command(priv, 0xb7, 0x4c, 0x06, 0x0c, 0x00, 0x00); + + panel_dbi_command(priv, 0xc0, 0x01, 0x11); + panel_dbi_command(priv, 0xc3, 0x07, 0x03, 0x04, 0x04, 0x04); + panel_dbi_command(priv, 0xc4, 0x12, 0x24, 0x18, 0x18, 0x02, 0x49); + panel_dbi_command(priv, 0xc5, 0x65); + panel_dbi_command(priv, 0xc6, 0x41, 0x63); + + panel_dbi_command(priv, 0xd0, 0x00, 0x46, 0x74, 0x32, 0x1d, 0x03, 0x51, 0x15, 0x04); + panel_dbi_command(priv, 0xd1, 0x00, 0x46, 0x74, 0x32, 0x1d, 0x03, 0x51, 0x15, 0x04); + panel_dbi_command(priv, 0xd2, 0x00, 0x46, 0x74, 0x32, 0x1f, 0x03, 0x51, 0x15, 0x04); + panel_dbi_command(priv, 0xd3, 0x00, 0x46, 0x74, 0x32, 0x1f, 0x03, 0x51, 0x15, 0x04); + panel_dbi_command(priv, 0xd4, 0x01, 0x46, 0x74, 0x25, 0x00, 0x03, 0x51, 0x15, 0x04); + panel_dbi_command(priv, 0xd5, 0x01, 0x46, 0x74, 0x25, 0x00, 0x03, 0x51, 0x15, 0x04); + + panel_dbi_command(priv, MIPI_DCS_SET_COLUMN_ADDRESS, 0x00, 0x00, 0x01, 0xdf); + panel_dbi_command(priv, MIPI_DCS_SET_PAGE_ADDRESS, 0x00, 0x00, 0x03, 0x1f); + + panel_dbi_command(priv, MIPI_DCS_EXIT_SLEEP_MODE); + msleep(120); + + panel_dbi_command(priv, MIPI_DCS_WRITE_MEMORY_START); + panel_dbi_command(priv, MIPI_DCS_SET_DISPLAY_ON); + + return 0; +} + +static int lg_lh400wv3_disable(struct drm_panel *panel) +{ + struct lg_lh400wv3 *priv = to_lg_lh400wv3(panel); + + panel_dbi_command(priv, MIPI_DCS_SET_DISPLAY_OFF); + panel_dbi_command(priv, MIPI_DCS_ENTER_SLEEP_MODE); + msleep(150); + + panel_dbi_command(priv, 0xc1, 0x01); + usleep_range(10000, 11000); + + return 0; +}; + +static int lg_lh400wv3_unprepare(struct drm_panel *panel) +{ + struct lg_lh400wv3 *priv = to_lg_lh400wv3(panel); + + gpiod_set_value_cansleep(priv->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(lg_lh400wv3_supplies), priv->supplies); + + msleep(50); + + return 0; +} + +static const struct drm_display_mode lg_lh400wv3_mode = { + .clock = (480 + 10 + 10 + 10) * (800 + 4 + 4 + 4) * 60 / 1000, + .hdisplay = 480, + .hsync_start = 480 + 10, + .hsync_end = 480 + 10 + 10, + .htotal = 480 + 10 + 10 + 10, + .vdisplay = 800, + .vsync_start = 800 + 4, + .vsync_end = 800 + 4 + 4, + .vtotal = 800 + 4 + 4 + 4, + .width_mm = 86, + .height_mm = 52, + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, +}; + +static int lg_lh400wv3_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; + + drm_display_info_set_bus_formats(&connector->display_info, + &bus_format, 1); + + connector->display_info.bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE | + DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE | + DRM_BUS_FLAG_DE_HIGH | + DRM_BUS_FLAG_DATA_LSB_TO_MSB; + + return drm_connector_helper_get_modes_fixed(connector, &lg_lh400wv3_mode); +} + +static const struct drm_panel_funcs lg_lh400wv3_panel_funcs = { + .prepare = lg_lh400wv3_prepare, + .enable = lg_lh400wv3_enable, + .disable = lg_lh400wv3_disable, + .unprepare = lg_lh400wv3_unprepare, + .get_modes = lg_lh400wv3_get_modes, +}; + +static int lg_lh400wv3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct lg_lh400wv3 *priv; + int ret; + + priv = devm_drm_panel_alloc(dev, struct lg_lh400wv3, panel, + &lg_lh400wv3_panel_funcs, DRM_MODE_CONNECTOR_DPI); + if (IS_ERR(priv)) + return PTR_ERR(priv); + + ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(lg_lh400wv3_supplies), + lg_lh400wv3_supplies, &priv->supplies); + if (ret) + return dev_err_probe(dev, ret, "Failed to get supplies\n"); + + priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(priv->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(priv->reset_gpio), + "Failed to get reset gpio\n"); + + ret = drm_panel_of_backlight(&priv->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to get backlight\n"); + + ret = devm_drm_panel_add(dev, &priv->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to add panel\n"); + + platform_set_drvdata(pdev, priv); + + return 0; +} + +static const struct of_device_id lg_lh400wv3_of_match[] = { + { .compatible = "lg,lh400wv3-sd04" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, lg_lh400wv3_of_match); + +static struct platform_driver lg_lh400wv3_driver = { + .driver = { + .name = "panel-lg-lh400wv3", + .of_match_table = lg_lh400wv3_of_match, + }, + .probe = lg_lh400wv3_probe, +}; +module_platform_driver(lg_lh400wv3_driver); + +MODULE_AUTHOR("Svyatoslav Ryhel <[email protected]>"); +MODULE_DESCRIPTION("LG LH400WV3-SD04 MIPI DBI Type B panel driver"); +MODULE_LICENSE("GPL"); -- 2.53.0
