static int st7735r_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct mipi_dbi *mipi;
struct gpio_desc *dc;
u32 rotation = 0;
int ret;
mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
mipi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(mipi->reset)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n");
return PTR_ERR(mipi->reset);
}
dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
if (IS_ERR(dc)) {
DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n");
return PTR_ERR(dc);
}
mipi->backlight = devm_of_find_backlight(dev);
if (IS_ERR(mipi->backlight))
return PTR_ERR(mipi->backlight);
device_property_read_u32(dev, "rotation", &rotation);
ret = mipi_dbi_spi_init(spi, mipi, dc);
if (ret)
return ret;
/* Cannot read from Adafruit 1.8" display via SPI */
mipi->read_commands = NULL;
ret = mipi_dbi_init(&spi->dev, mipi, &jd_t18003_t01_pipe_funcs,
&st7735r_driver, &jd_t18003_t01_mode, rotation);
if (ret)
return ret;
spi_set_drvdata(spi, mipi);
return devm_tinydrm_register(&mipi->tinydrm);
}
static int mi0283qt_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct tinydrm_device *tdev;
struct mipi_dbi *mipi;
struct gpio_desc *dc;
u32 rotation = 0;
int ret;
mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
if (!mipi)
return -ENOMEM;
mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(mipi->reset)) {
dev_err(dev, "Failed to get gpio 'reset'\n");
return PTR_ERR(mipi->reset);
}
dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
if (IS_ERR(dc)) {
dev_err(dev, "Failed to get gpio 'dc'\n");
return PTR_ERR(dc);
}
mipi->regulator = devm_regulator_get(dev, "power");
if (IS_ERR(mipi->regulator))
return PTR_ERR(mipi->regulator);
mipi->backlight = tinydrm_of_find_backlight(dev);
if (IS_ERR(mipi->backlight))
return PTR_ERR(mipi->backlight);
device_property_read_u32(dev, "rotation", &rotation);
ret = mipi_dbi_spi_init(spi, mipi, dc, &mi0283qt_pipe_funcs,
&mi0283qt_driver, &mi0283qt_mode, rotation);
if (ret)
return ret;
ret = mi0283qt_init(mipi);
if (ret)
return ret;
/* use devres to fini after drm unregister (drv->remove is before) */
ret = devm_add_action(dev, mi0283qt_fini, mipi);
if (ret) {
mi0283qt_fini(mipi);
return ret;
}
tdev = &mipi->tinydrm;
ret = devm_tinydrm_register(tdev);
if (ret)
return ret;
spi_set_drvdata(spi, mipi);
DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
tdev->drm->driver->name, dev_name(dev),
spi->max_speed_hz / 1000000,
tdev->drm->primary->index);
return 0;
}
