Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Linux/drivers/gpu/drm/panel/   (Open Source Betriebssystem Version 6.17.9©)  Datei vom 24.10.2025 mit Größe 5 kB image not shown  

Quelle  panel-tdo-tl070wsh30.c   Sprache: C

 
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2020 BayLibre, SAS
 * Author: Neil Armstrong <narmstrong@baylibre.com>
 */


#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>

#include <video/mipi_display.h>

#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>

struct tdo_tl070wsh30_panel {
 struct drm_panel base;
 struct mipi_dsi_device *link;

 struct regulator *supply;
 struct gpio_desc *reset_gpio;
};

static inline
struct tdo_tl070wsh30_panel *to_tdo_tl070wsh30_panel(struct drm_panel *panel)
{
 return container_of(panel, struct tdo_tl070wsh30_panel, base);
}

static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel)
{
 struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel);
 int err;

 err = regulator_enable(tdo_tl070wsh30->supply);
 if (err < 0)
  return err;

 usleep_range(10000, 11000);

 gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 1);

 usleep_range(10000, 11000);

 gpiod_set_value_cansleep(tdo_tl070wsh30->reset_gpio, 0);

 msleep(200);

 err = mipi_dsi_dcs_exit_sleep_mode(tdo_tl070wsh30->link);
 if (err < 0) {
  dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
  regulator_disable(tdo_tl070wsh30->supply);
  return err;
 }

 msleep(200);

 err = mipi_dsi_dcs_set_display_on(tdo_tl070wsh30->link);
 if (err < 0) {
  dev_err(panel->dev, "failed to set display on: %d\n", err);
  regulator_disable(tdo_tl070wsh30->supply);
  return err;
 }

 msleep(20);

 return 0;
}

static int tdo_tl070wsh30_panel_unprepare(struct drm_panel *panel)
{
 struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = to_tdo_tl070wsh30_panel(panel);
 int err;

 err = mipi_dsi_dcs_set_display_off(tdo_tl070wsh30->link);
 if (err < 0)
  dev_err(panel->dev, "failed to set display off: %d\n", err);

 usleep_range(10000, 11000);

 err = mipi_dsi_dcs_enter_sleep_mode(tdo_tl070wsh30->link);
 if (err < 0) {
  dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
  return err;
 }

 usleep_range(10000, 11000);

 regulator_disable(tdo_tl070wsh30->supply);

 return 0;
}

static const struct drm_display_mode default_mode = {
 .clock = 47250,
 .hdisplay = 1024,
 .hsync_start = 1024 + 46,
 .hsync_end = 1024 + 46 + 80,
 .htotal = 1024 + 46 + 80 + 100,
 .vdisplay = 600,
 .vsync_start = 600 + 5,
 .vsync_end = 600 + 5 + 5,
 .vtotal = 600 + 5 + 5 + 20,
 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};

static int tdo_tl070wsh30_panel_get_modes(struct drm_panel *panel,
           struct drm_connector *connector)
{
 struct drm_display_mode *mode;

 mode = drm_mode_duplicate(connector->dev, &default_mode);
 if (!mode) {
  dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
   default_mode.hdisplay, default_mode.vdisplay,
   drm_mode_vrefresh(&default_mode));
  return -ENOMEM;
 }

 drm_mode_set_name(mode);

 drm_mode_probed_add(connector, mode);

 connector->display_info.width_mm = 154;
 connector->display_info.height_mm = 85;
 connector->display_info.bpc = 8;

 return 1;
}

static const struct drm_panel_funcs tdo_tl070wsh30_panel_funcs = {
 .unprepare = tdo_tl070wsh30_panel_unprepare,
 .prepare = tdo_tl070wsh30_panel_prepare,
 .get_modes = tdo_tl070wsh30_panel_get_modes,
};

static const struct of_device_id tdo_tl070wsh30_of_match[] = {
 { .compatible = "tdo,tl070wsh30", },
 { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tdo_tl070wsh30_of_match);

static int tdo_tl070wsh30_panel_add(struct tdo_tl070wsh30_panel *tdo_tl070wsh30)
{
 struct device *dev = &tdo_tl070wsh30->link->dev;
 int err;

 tdo_tl070wsh30->supply = devm_regulator_get(dev, "power");
 if (IS_ERR(tdo_tl070wsh30->supply))
  return PTR_ERR(tdo_tl070wsh30->supply);

 tdo_tl070wsh30->reset_gpio = devm_gpiod_get(dev, "reset",
          GPIOD_OUT_LOW);
 if (IS_ERR(tdo_tl070wsh30->reset_gpio)) {
  err = PTR_ERR(tdo_tl070wsh30->reset_gpio);
  dev_dbg(dev, "failed to get reset gpio: %d\n", err);
  return err;
 }

 drm_panel_init(&tdo_tl070wsh30->base, &tdo_tl070wsh30->link->dev,
         &tdo_tl070wsh30_panel_funcs, DRM_MODE_CONNECTOR_DSI);

 err = drm_panel_of_backlight(&tdo_tl070wsh30->base);
 if (err)
  return err;

 drm_panel_add(&tdo_tl070wsh30->base);

 return 0;
}

static int tdo_tl070wsh30_panel_probe(struct mipi_dsi_device *dsi)
{
 struct tdo_tl070wsh30_panel *tdo_tl070wsh30;
 int err;

 dsi->lanes = 4;
 dsi->format = MIPI_DSI_FMT_RGB888;
 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM;

 tdo_tl070wsh30 = devm_kzalloc(&dsi->dev, sizeof(*tdo_tl070wsh30),
        GFP_KERNEL);
 if (!tdo_tl070wsh30)
  return -ENOMEM;

 mipi_dsi_set_drvdata(dsi, tdo_tl070wsh30);
 tdo_tl070wsh30->link = dsi;

 err = tdo_tl070wsh30_panel_add(tdo_tl070wsh30);
 if (err < 0)
  return err;

 return mipi_dsi_attach(dsi);
}

static void tdo_tl070wsh30_panel_remove(struct mipi_dsi_device *dsi)
{
 struct tdo_tl070wsh30_panel *tdo_tl070wsh30 = mipi_dsi_get_drvdata(dsi);
 int err;

 err = mipi_dsi_detach(dsi);
 if (err < 0)
  dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);

 drm_panel_remove(&tdo_tl070wsh30->base);
}

static struct mipi_dsi_driver tdo_tl070wsh30_panel_driver = {
 .driver = {
  .name = "panel-tdo-tl070wsh30",
  .of_match_table = tdo_tl070wsh30_of_match,
 },
 .probe = tdo_tl070wsh30_panel_probe,
 .remove = tdo_tl070wsh30_panel_remove,
};
module_mipi_dsi_driver(tdo_tl070wsh30_panel_driver);

MODULE_AUTHOR("Neil Armstrong ");
MODULE_DESCRIPTION("TDO TL070WSH30 panel driver");
MODULE_LICENSE("GPL v2");

Messung V0.5
C=95 H=96 G=95

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