drm/panel: Add OSD101T2587-53TS driver

The panel is similar to OSD101T2045-53TS (which is handled by panel-simple)
with one big difference: osd101t2587-53ts needs MIPI_DSI_TURN_ON_PERIPHERAL
message to be sent from the host to be operational and thus can not be
handled by panel-simple.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190226075523.28997-5-peter.ujfalusi@ti.com

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 25a3dae0133c8f1b44862603992e0d107a61e308..287a35d42f0f9b06afb8de8463c47917c769a387 100644 (file)
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -131,6 +131,15 @@ config DRM_PANEL_ORISETECH_OTM8009A
          Say Y here if you want to enable support for Orise Technology
          otm8009a 480x800 dsi 2dl panel.
 
+config DRM_PANEL_OSD_OSD101T2587_53TS
+       tristate "OSD OSD101T2587-53TS DSI 1920x1200 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 One Stop Displays
+         OSD101T2587-53TS 10.1" 1920x1200 dsi panel.
+
 config DRM_PANEL_PANASONIC_VVX10F034N00
        tristate "Panasonic VVX10F034N00 1920x1200 video mode panel"
        depends on OF

diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 7fd498ab8f0f80f41c6c9f68c923e4a86efce5d5..fb0cb3aaa9e6167550a549ca80f681ba02a57257 100644 (file)
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
 obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
 obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o
 obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
+obj-$(CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS) += panel-osd-osd101t2587-53ts.o
 obj-$(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

diff --git a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
new file mode 100644 (file)
index 0000000..e0e20ec
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
+ *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_device.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+struct osd101t2587_panel {
+       struct drm_panel base;
+       struct mipi_dsi_device *dsi;
+
+       struct backlight_device *backlight;
+       struct regulator *supply;
+
+       bool prepared;
+       bool enabled;
+
+       const struct drm_display_mode *default_mode;
+};
+
+static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)
+{
+       return container_of(panel, struct osd101t2587_panel, base);
+}
+
+static int osd101t2587_panel_disable(struct drm_panel *panel)
+{
+       struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
+       int ret;
+
+       if (!osd101t2587->enabled)
+               return 0;
+
+       backlight_disable(osd101t2587->backlight);
+
+       ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
+
+       osd101t2587->enabled = false;
+
+       return ret;
+}
+
+static int osd101t2587_panel_unprepare(struct drm_panel *panel)
+{
+       struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
+
+       if (!osd101t2587->prepared)
+               return 0;
+
+       regulator_disable(osd101t2587->supply);
+       osd101t2587->prepared = false;
+
+       return 0;
+}
+
+static int osd101t2587_panel_prepare(struct drm_panel *panel)
+{
+       struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
+       int ret;
+
+       if (osd101t2587->prepared)
+               return 0;
+
+       ret = regulator_enable(osd101t2587->supply);
+       if (!ret)
+               osd101t2587->prepared = true;
+
+       return ret;
+}
+
+static int osd101t2587_panel_enable(struct drm_panel *panel)
+{
+       struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
+       int ret;
+
+       if (osd101t2587->enabled)
+               return 0;
+
+       ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
+       if (ret)
+               return ret;
+
+       backlight_enable(osd101t2587->backlight);
+
+       osd101t2587->enabled = true;
+
+       return ret;
+}
+
+static const struct drm_display_mode default_mode_osd101t2587 = {
+       .clock = 164400,
+       .hdisplay = 1920,
+       .hsync_start = 1920 + 152,
+       .hsync_end = 1920 + 152 + 52,
+       .htotal = 1920 + 152 + 52 + 20,
+       .vdisplay = 1200,
+       .vsync_start = 1200 + 24,
+       .vsync_end = 1200 + 24 + 6,
+       .vtotal = 1200 + 24 + 6 + 48,
+       .vrefresh = 60,
+       .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+};
+
+static int osd101t2587_panel_get_modes(struct drm_panel *panel)
+{
+       struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
+       struct drm_display_mode *mode;
+
+       mode = drm_mode_duplicate(panel->drm, osd101t2587->default_mode);
+       if (!mode) {
+               dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
+                       osd101t2587->default_mode->hdisplay,
+                       osd101t2587->default_mode->vdisplay,
+                       osd101t2587->default_mode->vrefresh);
+               return -ENOMEM;
+       }
+
+       drm_mode_set_name(mode);
+
+       drm_mode_probed_add(panel->connector, mode);
+
+       panel->connector->display_info.width_mm = 217;
+       panel->connector->display_info.height_mm = 136;
+
+       return 1;
+}
+
+static const struct drm_panel_funcs osd101t2587_panel_funcs = {
+       .disable = osd101t2587_panel_disable,
+       .unprepare = osd101t2587_panel_unprepare,
+       .prepare = osd101t2587_panel_prepare,
+       .enable = osd101t2587_panel_enable,
+       .get_modes = osd101t2587_panel_get_modes,
+};
+
+static const struct of_device_id osd101t2587_of_match[] = {
+       {
+               .compatible = "osddisplays,osd101t2587-53ts",
+               .data = &default_mode_osd101t2587,
+       }, {
+               /* sentinel */
+       }
+};
+MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
+
+static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
+{
+       struct device *dev = &osd101t2587->dsi->dev;
+
+       osd101t2587->supply = devm_regulator_get(dev, "power");
+       if (IS_ERR(osd101t2587->supply))
+               return PTR_ERR(osd101t2587->supply);
+
+       osd101t2587->backlight = devm_of_find_backlight(dev);
+       if (IS_ERR(osd101t2587->backlight))
+               return PTR_ERR(osd101t2587->backlight);
+
+       drm_panel_init(&osd101t2587->base);
+       osd101t2587->base.funcs = &osd101t2587_panel_funcs;
+       osd101t2587->base.dev = &osd101t2587->dsi->dev;
+
+       return drm_panel_add(&osd101t2587->base);
+}
+
+static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
+{
+       struct osd101t2587_panel *osd101t2587;
+       const struct of_device_id *id;
+       int ret;
+
+       id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);
+       if (!id)
+               return -ENODEV;
+
+       dsi->lanes = 4;
+       dsi->format = MIPI_DSI_FMT_RGB888;
+       dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
+                         MIPI_DSI_MODE_VIDEO_BURST |
+                         MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+                         MIPI_DSI_MODE_EOT_PACKET;
+
+       osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
+       if (!osd101t2587)
+               return -ENOMEM;
+
+       mipi_dsi_set_drvdata(dsi, osd101t2587);
+
+       osd101t2587->dsi = dsi;
+       osd101t2587->default_mode = id->data;
+
+       ret = osd101t2587_panel_add(osd101t2587);
+       if (ret < 0)
+               return ret;
+
+       ret = mipi_dsi_attach(dsi);
+       if (ret)
+               drm_panel_remove(&osd101t2587->base);
+
+       return ret;
+}
+
+static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
+{
+       struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
+       int ret;
+
+       ret = osd101t2587_panel_disable(&osd101t2587->base);
+       if (ret < 0)
+               dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret);
+
+       osd101t2587_panel_unprepare(&osd101t2587->base);
+
+       drm_panel_remove(&osd101t2587->base);
+
+       ret = mipi_dsi_detach(dsi);
+       if (ret < 0)
+               dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
+
+       return ret;
+}
+
+static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+       struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
+
+       osd101t2587_panel_disable(&osd101t2587->base);
+       osd101t2587_panel_unprepare(&osd101t2587->base);
+}
+
+static struct mipi_dsi_driver osd101t2587_panel_driver = {
+       .driver = {
+               .name = "panel-osd-osd101t2587-53ts",
+               .of_match_table = osd101t2587_of_match,
+       },
+       .probe = osd101t2587_panel_probe,
+       .remove = osd101t2587_panel_remove,
+       .shutdown = osd101t2587_panel_shutdown,
+};
+module_mipi_dsi_driver(osd101t2587_panel_driver);
+
+MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
+MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");
+MODULE_LICENSE("GPL v2");