drm/modes: Add drm_mode_hsync() (7ac96a9c) · Commits · 戴 / test

drivers/gpu/drm/drm_modes.c

+27 −1

Original line number	Diff line number	Diff line
		@@ -553,6 +553,32 @@ int drm_mode_height(struct drm_display_mode *mode)
		}
		EXPORT_SYMBOL(drm_mode_height);

		/** drm_mode_hsync - get the hsync of a mode
		* @mode: mode
		*
		* LOCKING:
		* None.
		*
		* Return @modes's hsync rate in kHz, rounded to the nearest int.
		*/
		int drm_mode_hsync(struct drm_display_mode *mode)
		{
		unsigned int calc_val;

		if (mode->hsync)
		return mode->hsync;

		if (mode->htotal < 0)
		return 0;

		calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */
		calc_val += 500; /* round to 1000Hz */
		calc_val /= 1000; /* truncate to kHz */

		return calc_val;
		}
		EXPORT_SYMBOL(drm_mode_hsync);

		/**
		* drm_mode_vrefresh - get the vrefresh of a mode
		* @mode: mode
		@@ -560,7 +586,7 @@ EXPORT_SYMBOL(drm_mode_height);
		* LOCKING:
		* None.
		*
		* Return @mode's vrefresh rate or calculate it if necessary.
		* Return @mode's vrefresh rate in Hz or calculate it if necessary.
		*
		* FIXME: why is this needed? shouldn't vrefresh be set already?
		*

+4 −3

Original line number	Diff line number	Diff line
		@@ -123,7 +123,7 @@ struct drm_display_mode {
		int type;

		/* Proposed mode values */
		int clock;
		int clock; /* in kHz */
		int hdisplay;
		int hsync_start;
		int hsync_end;
		@@ -164,8 +164,8 @@ struct drm_display_mode {
		int *private;
		int private_flags;

		int vrefresh;
		float hsync;
		int vrefresh; /* in Hz */
		int hsync; /* in kHz */
		};

		enum drm_connector_status {
		@@ -681,6 +681,7 @@ extern void drm_mode_validate_size(struct drm_device *dev,
		extern void drm_mode_prune_invalid(struct drm_device *dev,
		struct list_head *mode_list, bool verbose);
		extern void drm_mode_sort(struct list_head *mode_list);
		extern int drm_mode_hsync(struct drm_display_mode *mode);
		extern int drm_mode_vrefresh(struct drm_display_mode *mode);
		extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
		int adjust_flags);