diff options
Diffstat (limited to 'drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c index ab6c0c6cd0e2..91a48d774cf7 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -19,6 +19,7 @@ #include <linux/regmap.h> #include <drm/drm_atomic_helper.h> +#include <drm/drm_client_setup.h> #include <drm/drm_drv.h> #include <drm/drm_fbdev_dma.h> #include <drm/drm_gem_dma_helper.h> @@ -100,12 +101,25 @@ static void fsl_dcu_irq_uninstall(struct drm_device *dev) static int fsl_dcu_load(struct drm_device *dev, unsigned long flags) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; + struct regmap *scfg; int ret; ret = fsl_dcu_drm_modeset_init(fsl_dev); - if (ret < 0) { - dev_err(dev->dev, "failed to initialize mode setting\n"); - return ret; + if (ret < 0) + return dev_err_probe(dev->dev, ret, "failed to initialize mode setting\n"); + + scfg = syscon_regmap_lookup_by_compatible("fsl,ls1021a-scfg"); + if (PTR_ERR(scfg) != -ENODEV) { + /* + * For simplicity, enable the PIXCLK unconditionally, + * resulting in increased power consumption. Disabling + * the clock in PM or on unload could be implemented as + * a future improvement. + */ + ret = regmap_update_bits(scfg, SCFG_PIXCLKCR, SCFG_PIXCLKCR_PXCEN, + SCFG_PIXCLKCR_PXCEN); + if (ret < 0) + return dev_err_probe(dev->dev, ret, "failed to enable pixclk\n"); } ret = drm_vblank_init(dev, dev->mode_config.num_crtc); @@ -156,6 +170,7 @@ static const struct drm_driver fsl_dcu_drm_driver = { .load = fsl_dcu_load, .unload = fsl_dcu_unload, DRM_GEM_DMA_DRIVER_OPS, + DRM_FBDEV_DMA_DRIVER_OPS, .fops = &fsl_dcu_drm_fops, .name = "fsl-dcu-drm", .desc = "Freescale DCU DRM", @@ -272,10 +287,8 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev) } fsl_dev->irq = platform_get_irq(pdev, 0); - if (fsl_dev->irq < 0) { - dev_err(dev, "failed to get irq\n"); + if (fsl_dev->irq < 0) return fsl_dev->irq; - } fsl_dev->regmap = devm_regmap_init_mmio(dev, base, &fsl_dcu_regmap_config); @@ -333,7 +346,7 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev) if (ret < 0) goto put; - drm_fbdev_dma_setup(drm, legacyfb_depth); + drm_client_setup_with_color_mode(drm, legacyfb_depth); return 0; |