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authorJani Nikula <jani.nikula@intel.com>2017-01-27 18:34:51 +0300
committerJani Nikula <jani.nikula@intel.com>2017-01-31 16:31:58 +0300
commit8f2e045ec878ef77aa2b2650f40fdb7d01b831af (patch)
tree4130f7f7431ec299cb329ae120542c0dddb44c32 /include/drm
parentcbef9099398cbc45c4245b413ec73737ed88eb83 (diff)
downloadlinux-8f2e045ec878ef77aa2b2650f40fdb7d01b831af.tar.xz
drm/color: un-inline drm_color_lut_extract()
The function is not that big, but it's also not used for anything performance critical. Make it a normal function. As a side effect, this apparently makes sparse smarter about what it's doing, and gets rid of the warning: ./include/drm/drm_color_mgmt.h:53:28: warning: shift too big (4294967295) for type unsigned long ./include/drm/drm_color_mgmt.h:53:28: warning: cast truncates bits from constant value (8000000000000000 becomes 0) v2: rebased Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1485531291-24821-1-git-send-email-jani.nikula@intel.com
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/drm_color_mgmt.h27
1 files changed, 2 insertions, 25 deletions
diff --git a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h
index d9c2f680f5ae..bce4a532836d 100644
--- a/include/drm/drm_color_mgmt.h
+++ b/include/drm/drm_color_mgmt.h
@@ -25,6 +25,8 @@
#include <linux/ctype.h>
+uint32_t drm_color_lut_extract(uint32_t user_input, uint32_t bit_precision);
+
void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
uint degamma_lut_size,
bool has_ctm,
@@ -33,29 +35,4 @@ void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
int gamma_size);
-/**
- * drm_color_lut_extract - clamp and round LUT entries
- * @user_input: input value
- * @bit_precision: number of bits the hw LUT supports
- *
- * Extract a degamma/gamma LUT value provided by user (in the form of
- * &drm_color_lut entries) and round it to the precision supported by the
- * hardware.
- */
-static inline uint32_t drm_color_lut_extract(uint32_t user_input,
- uint32_t bit_precision)
-{
- uint32_t val = user_input;
- uint32_t max = 0xffff >> (16 - bit_precision);
-
- /* Round only if we're not using full precision. */
- if (bit_precision < 16) {
- val += 1UL << (16 - bit_precision - 1);
- val >>= 16 - bit_precision;
- }
-
- return clamp_val(val, 0, max);
-}
-
-
#endif