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// 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->dsi->dev,
&osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);
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");
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