static int hx8357d_probe(struct spi_device *spi) { struct device *dev = &spi->dev; struct drm_device *drm; struct mipi_dbi *mipi; struct gpio_desc *dc; u32 rotation = 0; int ret; mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); if (!mipi) return -ENOMEM; drm = &mipi->drm; ret = devm_drm_dev_init(dev, drm, &hx8357d_driver); if (ret) { kfree(mipi); return ret; } drm_mode_config_init(drm); 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; ret = mipi_dbi_init(mipi, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation); if (ret) return ret; drm_mode_config_reset(drm); ret = drm_dev_register(drm, 0); if (ret) return ret; spi_set_drvdata(spi, drm); drm_fbdev_generic_setup(drm, 0); return 0; }
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); }