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Merge tag 'of_videomode_helper' of git://git.pengutronix.de/git/str/linux into drm-next

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videomode helpers for of + devicetree stuff, required for new kms drivers

(not the fbdev maintainer).

* tag 'of_videomode_helper' of git://git.pengutronix.de/git/str/linux:
  drm_modes: add of_videomode helpers
  drm_modes: add videomode helpers
  fbmon: add of_videomode helpers
  fbmon: add videomode helpers
  video: add of helper for display timings/videomode
  video: add display_timing and videomode
  viafb: rename display_timing to via_display_timing
This commit is contained in:
Dave Airlie
2013-02-08 12:34:44 +10:00
parent bb0f78dd7d edb37a95c5
commit ed914f69f8
21 changed files with 894 additions and 13 deletions
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70
drivers/gpu/drm/drm_modes.c
View File

@@ -35,6 +35,8 @@
#include <linux/export.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <video/of_videomode.h>
#include <video/videomode.h>
/**
* drm_mode_debug_printmodeline - debug print a mode
@@ -504,6 +506,74 @@ drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh,
}
EXPORT_SYMBOL(drm_gtf_mode);
#if IS_ENABLED(CONFIG_VIDEOMODE)
int drm_display_mode_from_videomode(const struct videomode *vm,
struct drm_display_mode *dmode)
{
dmode->hdisplay = vm->hactive;
dmode->hsync_start = dmode->hdisplay + vm->hfront_porch;
dmode->hsync_end = dmode->hsync_start + vm->hsync_len;
dmode->htotal = dmode->hsync_end + vm->hback_porch;
dmode->vdisplay = vm->vactive;
dmode->vsync_start = dmode->vdisplay + vm->vfront_porch;
dmode->vsync_end = dmode->vsync_start + vm->vsync_len;
dmode->vtotal = dmode->vsync_end + vm->vback_porch;
dmode->clock = vm->pixelclock / 1000;
dmode->flags = 0;
if (vm->dmt_flags & VESA_DMT_HSYNC_HIGH)
dmode->flags |= DRM_MODE_FLAG_PHSYNC;
else if (vm->dmt_flags & VESA_DMT_HSYNC_LOW)
dmode->flags |= DRM_MODE_FLAG_NHSYNC;
if (vm->dmt_flags & VESA_DMT_VSYNC_HIGH)
dmode->flags |= DRM_MODE_FLAG_PVSYNC;
else if (vm->dmt_flags & VESA_DMT_VSYNC_LOW)
dmode->flags |= DRM_MODE_FLAG_NVSYNC;
if (vm->data_flags & DISPLAY_FLAGS_INTERLACED)
dmode->flags |= DRM_MODE_FLAG_INTERLACE;
if (vm->data_flags & DISPLAY_FLAGS_DOUBLESCAN)
dmode->flags |= DRM_MODE_FLAG_DBLSCAN;
drm_mode_set_name(dmode);
return 0;
}
EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode);
#endif
#if IS_ENABLED(CONFIG_OF_VIDEOMODE)
/**
* of_get_drm_display_mode - get a drm_display_mode from devicetree
* @np: device_node with the timing specification
* @dmode: will be set to the return value
* @index: index into the list of display timings in devicetree
*
* This function is expensive and should only be used, if only one mode is to be
* read from DT. To get multiple modes start with of_get_display_timings and
* work with that instead.
*/
int of_get_drm_display_mode(struct device_node *np,
struct drm_display_mode *dmode, int index)
{
struct videomode vm;
int ret;
ret = of_get_videomode(np, &vm, index);
if (ret)
return ret;
drm_display_mode_from_videomode(&vm, dmode);
pr_debug("%s: got %dx%d display mode from %s\n",
of_node_full_name(np), vm.hactive, vm.vactive, np->name);
drm_mode_debug_printmodeline(dmode);
return 0;
}
EXPORT_SYMBOL_GPL(of_get_drm_display_mode);
#endif
/**
* drm_mode_set_name - set the name on a mode
* @mode: name will be set in this mode