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| author |   Jani Nikula <jani.nikula@intel.com> | 2017-01-27 17:34:51 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-01-31 15:31:58 +0200 |
| commit | 8f2e045ec878ef77aa2b2650f40fdb7d01b831af (patch) | |
| tree | 4130f7f7431ec299cb329ae120542c0dddb44c32 /include/drm/drm_color_mgmt.h | |
| parent | drm/docs: Fix documentation for drm_atomic_set_mode_for_crtc (diff) | |
| download | wireguard-linux-8f2e045ec878ef77aa2b2650f40fdb7d01b831af.tar.xz wireguard-linux-8f2e045ec878ef77aa2b2650f40fdb7d01b831af.zip | |
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/drm_color_mgmt.h')
| -rw-r--r-- | include/drm/drm_color_mgmt.h | 27 |
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 |