drm: Extract drm_color_mgmt.[hc]
For both the new degamm/lut/gamma atomic combo, and the old legacy gamma tables. Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1474448370-32227-5-git-send-email-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter
56
include/drm/drm_color_mgmt.h
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56
include/drm/drm_color_mgmt.h
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@@ -0,0 +1,56 @@
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifndef __DRM_COLOR_MGMT_H__
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#define __DRM_COLOR_MGMT_H__
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#include <linux/ctype.h>
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void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
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uint degamma_lut_size,
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bool has_ctm,
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uint gamma_lut_size);
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int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
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int gamma_size);
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/*
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* Extract a degamma/gamma LUT value provided by user and round it to the
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* precision supported by the hardware.
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*/
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static inline uint32_t drm_color_lut_extract(uint32_t user_input,
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uint32_t bit_precision)
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{
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uint32_t val = user_input;
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uint32_t max = 0xffff >> (16 - bit_precision);
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/* Round only if we're not using full precision. */
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if (bit_precision < 16) {
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val += 1UL << (16 - bit_precision - 1);
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val >>= 16 - bit_precision;
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}
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return clamp_val(val, 0, max);
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}
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#endif
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@@ -46,6 +46,7 @@
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#include <drm/drm_edid.h>
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#include <drm/drm_plane.h>
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#include <drm/drm_blend.h>
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#include <drm/drm_color_mgmt.h>
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struct drm_device;
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struct drm_mode_set;
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@@ -1337,9 +1338,6 @@ extern void drm_mode_config_init(struct drm_device *dev);
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extern void drm_mode_config_reset(struct drm_device *dev);
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extern void drm_mode_config_cleanup(struct drm_device *dev);
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extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
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int gamma_size);
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extern int drm_mode_set_config_internal(struct drm_mode_set *set);
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extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
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@@ -1349,11 +1347,6 @@ extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
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extern void drm_mode_put_tile_group(struct drm_device *dev,
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struct drm_tile_group *tg);
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extern void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
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uint degamma_lut_size,
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bool has_ctm,
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uint gamma_lut_size);
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/* Helpers */
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static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
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uint32_t id)
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@@ -1363,25 +1356,6 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
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return mo ? obj_to_crtc(mo) : NULL;
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}
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/*
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* Extract a degamma/gamma LUT value provided by user and round it to the
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* precision supported by the hardware.
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*/
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static inline uint32_t drm_color_lut_extract(uint32_t user_input,
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uint32_t bit_precision)
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{
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uint32_t val = user_input;
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uint32_t max = 0xffff >> (16 - bit_precision);
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/* Round only if we're not using full precision. */
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if (bit_precision < 16) {
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val += 1UL << (16 - bit_precision - 1);
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val >>= 16 - bit_precision;
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}
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return clamp_val(val, 0, max);
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}
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#define drm_for_each_crtc(crtc, dev) \
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list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head)
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