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Commit 8cc3f23c authored by Ville Syrjälä's avatar Ville Syrjälä Committed by Dave Airlie
Browse files

drm: Add drm_mode_equal_no_clocks() 



drm_mode_equal_no_clocks() is like drm_mode_equal() except it doesn't
compare the clock or vrefresh values. drm_mode_equal() is now
implemented by first doing the clock checks, and then calling
drm_mode_equal_no_clocks().

v2: Add missing EXPORT_SYMBOL()

Reviewed-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 67af116e

drivers/gpu/drm/drm_modes.c

+21 −1
Original line number Diff line number Diff line
@@ -848,6 +848,26 @@ bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_displ 
	} else if (mode1->clock != mode2->clock)

		return false;



	return drm_mode_equal_no_clocks(mode1, mode2);

}

EXPORT_SYMBOL(drm_mode_equal);



/**

 * drm_mode_equal_no_clocks - test modes for equality

 * @mode1: first mode

 * @mode2: second mode

 *

 * LOCKING:

 * None.

 *

 * Check to see if @mode1 and @mode2 are equivalent, but

 * don't check the pixel clocks.

 *

 * RETURNS:

 * True if the modes are equal, false otherwise.

 */

bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2)

{

	if (mode1->hdisplay == mode2->hdisplay &&

	    mode1->hsync_start == mode2->hsync_start &&

	    mode1->hsync_end == mode2->hsync_end &&
@@ -863,7 +883,7 @@ bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_displ 


	return false;

}

EXPORT_SYMBOL(drm_mode_equal);

EXPORT_SYMBOL(drm_mode_equal_no_clocks);



/**

 * drm_mode_validate_size - make sure modes adhere to size constraints

include/drm/drm_crtc.h

+1 −0
Original line number Diff line number Diff line
@@ -922,6 +922,7 @@ extern void drm_mode_config_reset(struct drm_device *dev); 
extern void drm_mode_config_cleanup(struct drm_device *dev);

extern void drm_mode_set_name(struct drm_display_mode *mode);

extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);

extern bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);

extern int drm_mode_width(const struct drm_display_mode *mode);

extern int drm_mode_height(const struct drm_display_mode *mode);