diff options
Diffstat (limited to 'drivers/gpu/drm/tiny/simpledrm.c')
| -rw-r--r-- | drivers/gpu/drm/tiny/simpledrm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c index 5422363690e7..40de01efbbd9 100644 --- a/drivers/gpu/drm/tiny/simpledrm.c +++ b/drivers/gpu/drm/tiny/simpledrm.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only +#include <linux/backlight.h> #include <linux/clk.h> #include <linux/of_clk.h> #include <linux/minmax.h> @@ -225,6 +226,9 @@ struct simpledrm_device { size_t nformats; struct drm_connector connector; struct drm_simple_display_pipe pipe; + + /* backlight */ + struct backlight_device *backlight; }; static struct simpledrm_device *simpledrm_device_of_dev(struct drm_device *dev) @@ -673,6 +677,9 @@ simpledrm_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, dst += drm_fb_clip_offset(sdev->pitch, sdev->format, &dst_clip); drm_fb_blit_toio(dst, sdev->pitch, sdev->format->format, vmap, fb, &src_clip); + if (sdev->backlight) + backlight_enable(sdev->backlight); + drm_dev_exit(idx); } @@ -686,6 +693,9 @@ simpledrm_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe) if (!drm_dev_enter(dev, &idx)) return; + if (sdev->backlight) + backlight_disable(sdev->backlight); + /* Clear screen to black if disabled */ memset_io(sdev->screen_base, 0, sdev->pitch * sdev->mode.vdisplay); @@ -845,6 +855,10 @@ simpledrm_device_create(struct drm_driver *drv, struct platform_device *pdev) sdev->pdev = pdev; platform_set_drvdata(pdev, sdev); + sdev->backlight = devm_of_find_backlight(&pdev->dev); + if (IS_ERR(sdev->backlight)) + sdev->backlight = NULL; + ret = simpledrm_device_init_clocks(sdev); if (ret) return ERR_PTR(ret); |