[PATCH 4/4] drm/panel: Add OSD101T2587-53TS driver

Peter Ujfalusi
2019-02-15T14:03:06Z

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>
---
drivers/gpu/drm/panel/Kconfig | 6 +
drivers/gpu/drm/panel/Makefile | 1 +
.../drm/panel/panel-osd-osd101t2587-53ts.c | 284 ++++++++++++++++++
3 files changed, 291 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 3e070153ef21..351661920838 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -122,6 +122,12 @@ 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
+
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 e7ab71968bbf..d9d99956db0c 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -10,6 +10,7 @@ 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
index 000000000000..6dbdd5b27bfb
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
@@ -0,0 +1,284 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 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/drmP.h>
+#include <drm/drm_crtc.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;
+
+ ktime_t earliest_wake;
+
+ const struct drm_display_mode *default_mode;
+ const struct drm_display_mode *mode;
+};
+
+static inline struct osd101t2587_panel *to_osd101t2587_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 = to_osd101t2587_panel(panel);
+ int ret;
+
+ if (!osd101t2587->enabled)
+ return 0;
+
+ if (osd101t2587->backlight) {
+ osd101t2587->backlight->props.power = FB_BLANK_POWERDOWN;
+ osd101t2587->backlight->props.state |= BL_CORE_FBBLANK;
+ backlight_update_status(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 = to_osd101t2587_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 = to_osd101t2587_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 = to_osd101t2587_panel(panel);
+ int ret;
+
+ if (osd101t2587->enabled)
+ return 0;
+
+ ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
+ if (ret)
+ return ret;
+
+ if (osd101t2587->backlight) {
+ osd101t2587->backlight->props.power = FB_BLANK_UNBLANK;
+ osd101t2587->backlight->props.state &= ~BL_CORE_FBBLANK;
+ backlight_update_status(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 = to_osd101t2587_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 = "osd,osd101t2587-53ts",
+ .data = &default_mode_osd101t2587,
+ }, { }
+};
+MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
+
+static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
+{
+ struct device *dev = &osd101t2587->dsi->dev;
+ struct device_node *np;
+ int ret;
+
+ osd101t2587->mode = osd101t2587->default_mode;
+
+ osd101t2587->supply = devm_regulator_get(dev, "power");
+ if (IS_ERR(osd101t2587->supply))
+ return PTR_ERR(osd101t2587->supply);
+
+ np = of_parse_phandle(dev->of_node, "backlight", 0);
+ if (np) {
+ osd101t2587->backlight = of_find_backlight_by_node(np);
+ of_node_put(np);
+
+ if (!osd101t2587->backlight)
+ return -EPROBE_DEFER;
+ }
+
+ drm_panel_init(&osd101t2587->base);
+ osd101t2587->base.funcs = &osd101t2587_panel_funcs;
+ osd101t2587->base.dev = &osd101t2587->dsi->dev;
+
+ ret = drm_panel_add(&osd101t2587->base);
+ if (ret < 0)
+ goto put_backlight;
+
+ return 0;
+
+put_backlight:
+ if (osd101t2587->backlight)
+ put_device(&osd101t2587->backlight->dev);
+
+ return ret;
+}
+
+static void osd101t2587_panel_del(struct osd101t2587_panel *osd101t2587)
+{
+ if (osd101t2587->base.dev)
+ drm_panel_remove(&osd101t2587->base);
+
+ if (osd101t2587->backlight)
+ put_device(&osd101t2587->backlight->dev);
+}
+
+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;
+
+ return mipi_dsi_attach(dsi);
+}
+
+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_err(&dsi->dev, "failed to disable panel: %d\n", ret);
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
+
+ osd101t2587_panel_del(osd101t2587);
+
+ return 0;
+}
+
+static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
+
+ osd101t2587_panel_disable(&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");
--
Peter