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drm/panel: Add driver for Samsung S6D16D0 panel
The Samsung S6D16D0 is a simple comman mode only DSI display that is used on the ST-Ericsson Ux500 reference design TVK1281618 user interface board (UIB). Cc: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20181023074630.29186-2-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij
parent
674c9e198c
commit
ac1d6d7488
@ -138,6 +138,12 @@ config DRM_PANEL_RAYDIUM_RM68200
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Say Y here if you want to enable support for Raydium RM68200
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720x1280 DSI video mode panel.
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config DRM_PANEL_SAMSUNG_S6D16D0
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tristate "Samsung S6D16D0 DSI video mode panel"
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depends on OF
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depends on DRM_MIPI_DSI
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select VIDEOMODE_HELPERS
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config DRM_PANEL_SAMSUNG_S6E3HA2
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tristate "Samsung S6E3HA2 DSI video mode panel"
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depends on OF
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@ -13,6 +13,7 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
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obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
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obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
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264
drivers/gpu/drm/panel/panel-samsung-s6d16d0.c
Normal file
264
drivers/gpu/drm/panel/panel-samsung-s6d16d0.c
Normal file
@ -0,0 +1,264 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* MIPI-DSI Samsung s6d16d0 panel driver. This is a 864x480
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* AMOLED panel with a command-only DSI interface.
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*/
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#include <drm/drm_modes.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_print.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <linux/delay.h>
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#include <linux/of_device.h>
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#include <linux/module.h>
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struct s6d16d0 {
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struct device *dev;
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struct drm_panel panel;
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struct regulator *supply;
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struct gpio_desc *reset_gpio;
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};
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/*
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* The timings are not very helpful as the display is used in
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* command mode.
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*/
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static const struct drm_display_mode samsung_s6d16d0_mode = {
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/* HS clock, (htotal*vtotal*vrefresh)/1000 */
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.clock = 420160,
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.hdisplay = 864,
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.hsync_start = 864 + 154,
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.hsync_end = 864 + 154 + 16,
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.htotal = 864 + 154 + 16 + 32,
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.vdisplay = 480,
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.vsync_start = 480 + 1,
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.vsync_end = 480 + 1 + 1,
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.vtotal = 480 + 1 + 1 + 1,
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/*
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* This depends on the clocking HS vs LP rate, this value
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* is calculated as:
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* vrefresh = (clock * 1000) / (htotal*vtotal)
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*/
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.vrefresh = 816,
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.width_mm = 84,
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.height_mm = 48,
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};
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static inline struct s6d16d0 *panel_to_s6d16d0(struct drm_panel *panel)
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{
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return container_of(panel, struct s6d16d0, panel);
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}
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static int s6d16d0_unprepare(struct drm_panel *panel)
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{
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struct s6d16d0 *s6 = panel_to_s6d16d0(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);
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int ret;
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/* Enter sleep mode */
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret) {
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DRM_DEV_ERROR(s6->dev, "failed to enter sleep mode (%d)\n",
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ret);
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return ret;
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}
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/* Assert RESET */
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gpiod_set_value_cansleep(s6->reset_gpio, 1);
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regulator_disable(s6->supply);
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return 0;
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}
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static int s6d16d0_prepare(struct drm_panel *panel)
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{
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struct s6d16d0 *s6 = panel_to_s6d16d0(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);
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int ret;
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ret = regulator_enable(s6->supply);
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if (ret) {
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DRM_DEV_ERROR(s6->dev, "failed to enable supply (%d)\n", ret);
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return ret;
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}
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/* Assert RESET */
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gpiod_set_value_cansleep(s6->reset_gpio, 1);
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udelay(10);
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/* De-assert RESET */
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gpiod_set_value_cansleep(s6->reset_gpio, 0);
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msleep(120);
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/* Enabe tearing mode: send TE (tearing effect) at VBLANK */
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ret = mipi_dsi_dcs_set_tear_on(dsi,
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MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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if (ret) {
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DRM_DEV_ERROR(s6->dev, "failed to enble vblank TE (%d)\n",
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ret);
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return ret;
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}
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/* Exit sleep mode and power on */
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret) {
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DRM_DEV_ERROR(s6->dev, "failed to exit sleep mode (%d)\n",
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ret);
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return ret;
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}
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return 0;
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}
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static int s6d16d0_enable(struct drm_panel *panel)
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{
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struct s6d16d0 *s6 = panel_to_s6d16d0(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);
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int ret;
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret) {
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DRM_DEV_ERROR(s6->dev, "failed to turn display on (%d)\n",
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ret);
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return ret;
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}
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return 0;
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}
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static int s6d16d0_disable(struct drm_panel *panel)
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{
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struct s6d16d0 *s6 = panel_to_s6d16d0(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);
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int ret;
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret) {
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DRM_DEV_ERROR(s6->dev, "failed to turn display off (%d)\n",
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ret);
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return ret;
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}
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return 0;
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}
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static int s6d16d0_get_modes(struct drm_panel *panel)
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{
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struct drm_connector *connector = panel->connector;
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struct drm_display_mode *mode;
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strncpy(connector->display_info.name, "Samsung S6D16D0\0",
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DRM_DISPLAY_INFO_LEN);
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mode = drm_mode_duplicate(panel->drm, &samsung_s6d16d0_mode);
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if (!mode) {
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DRM_ERROR("bad mode or failed to add mode\n");
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return -EINVAL;
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}
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drm_mode_set_name(mode);
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mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
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connector->display_info.width_mm = mode->width_mm;
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connector->display_info.height_mm = mode->height_mm;
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drm_mode_probed_add(connector, mode);
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return 1; /* Number of modes */
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}
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static const struct drm_panel_funcs s6d16d0_drm_funcs = {
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.disable = s6d16d0_disable,
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.unprepare = s6d16d0_unprepare,
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.prepare = s6d16d0_prepare,
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.enable = s6d16d0_enable,
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.get_modes = s6d16d0_get_modes,
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};
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static int s6d16d0_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct s6d16d0 *s6;
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int ret;
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s6 = devm_kzalloc(dev, sizeof(struct s6d16d0), GFP_KERNEL);
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if (!s6)
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return -ENOMEM;
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mipi_dsi_set_drvdata(dsi, s6);
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s6->dev = dev;
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dsi->lanes = 2;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->hs_rate = 420160000;
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dsi->lp_rate = 19200000;
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/*
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* This display uses command mode so no MIPI_DSI_MODE_VIDEO
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* or MIPI_DSI_MODE_VIDEO_SYNC_PULSE
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*
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* As we only send commands we do not need to be continuously
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* clocked.
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*/
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dsi->mode_flags =
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MIPI_DSI_CLOCK_NON_CONTINUOUS |
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MIPI_DSI_MODE_EOT_PACKET;
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s6->supply = devm_regulator_get(dev, "vdd1");
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if (IS_ERR(s6->supply))
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return PTR_ERR(s6->supply);
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/* This asserts RESET by default */
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s6->reset_gpio = devm_gpiod_get_optional(dev, "reset",
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GPIOD_OUT_HIGH);
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if (IS_ERR(s6->reset_gpio)) {
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ret = PTR_ERR(s6->reset_gpio);
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if (ret != -EPROBE_DEFER)
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DRM_DEV_ERROR(dev, "failed to request GPIO (%d)\n",
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ret);
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return ret;
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}
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drm_panel_init(&s6->panel);
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s6->panel.dev = dev;
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s6->panel.funcs = &s6d16d0_drm_funcs;
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ret = drm_panel_add(&s6->panel);
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if (ret < 0)
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return ret;
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ret = mipi_dsi_attach(dsi);
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if (ret < 0)
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drm_panel_remove(&s6->panel);
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return ret;
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}
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static int s6d16d0_remove(struct mipi_dsi_device *dsi)
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{
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struct s6d16d0 *s6 = mipi_dsi_get_drvdata(dsi);
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mipi_dsi_detach(dsi);
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drm_panel_remove(&s6->panel);
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return 0;
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}
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static const struct of_device_id s6d16d0_of_match[] = {
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{ .compatible = "samsung,s6d16d0" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, s6d16d0_of_match);
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static struct mipi_dsi_driver s6d16d0_driver = {
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.probe = s6d16d0_probe,
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.remove = s6d16d0_remove,
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.driver = {
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.name = "panel-samsung-s6d16d0",
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.of_match_table = s6d16d0_of_match,
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},
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};
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module_mipi_dsi_driver(s6d16d0_driver);
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MODULE_AUTHOR("Linus Wallei <linus.walleij@linaro.org>");
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MODULE_DESCRIPTION("MIPI-DSI s6d16d0 Panel Driver");
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MODULE_LICENSE("GPL v2");
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