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7ea7728387
Change return value to int to propagate errors from gamma_set, and remove start parameter. Updates always use the full size, and some drivers even ignore the start parameter altogether. This is needed for atomic drivers, where an atomic commit can fail with -EINTR or -ENOMEM and should be restarted. This is already and issue for drm_atomic_helper_legacy_set_gamma, which this patch fixes up. Changes since v1: - Fix compiler warning. (Emil) - Fix commit message (Daniel) Cc: Alex Deucher <alexander.deucher@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: David Airlie <airlied@linux.ie> Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Eric Anholt <eric@anholt.net> Cc: VMware Graphics <linux-graphics-maintainer@vmware.com> Cc: Mathieu Larouche <mathieu.larouche@matrox.com> Cc: Thierry Reding <treding@nvidia.com> Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> [danvet: Improve commit message a bit more, mention that this fixes the helper.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/742944bc-9f41-1acb-df4f-0fd4c8a10168@linux.intel.com
100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/*
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* Copyright © 2006-2011 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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* Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
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*/
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#ifndef _GMA_DISPLAY_H_
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#define _GMA_DISPLAY_H_
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#include <linux/pm_runtime.h>
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struct gma_clock_t {
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/* given values */
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int n;
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int m1, m2;
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int p1, p2;
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/* derived values */
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int dot;
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int vco;
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int m;
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int p;
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};
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struct gma_range_t {
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int min, max;
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};
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struct gma_p2_t {
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int dot_limit;
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int p2_slow, p2_fast;
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};
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struct gma_limit_t {
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struct gma_range_t dot, vco, n, m, m1, m2, p, p1;
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struct gma_p2_t p2;
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bool (*find_pll)(const struct gma_limit_t *, struct drm_crtc *,
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int target, int refclk,
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struct gma_clock_t *best_clock);
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};
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struct gma_clock_funcs {
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void (*clock)(int refclk, struct gma_clock_t *clock);
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const struct gma_limit_t *(*limit)(struct drm_crtc *crtc, int refclk);
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bool (*pll_is_valid)(struct drm_crtc *crtc,
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const struct gma_limit_t *limit,
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struct gma_clock_t *clock);
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};
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/* Common pipe related functions */
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extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
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extern void gma_wait_for_vblank(struct drm_device *dev);
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extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
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struct drm_framebuffer *old_fb);
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extern int gma_crtc_cursor_set(struct drm_crtc *crtc,
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struct drm_file *file_priv,
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uint32_t handle,
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uint32_t width, uint32_t height);
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extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
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extern void gma_crtc_load_lut(struct drm_crtc *crtc);
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extern int gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
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u16 *blue, u32 size);
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extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
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extern void gma_crtc_prepare(struct drm_crtc *crtc);
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extern void gma_crtc_commit(struct drm_crtc *crtc);
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extern void gma_crtc_disable(struct drm_crtc *crtc);
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extern void gma_crtc_destroy(struct drm_crtc *crtc);
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extern int gma_crtc_set_config(struct drm_mode_set *set);
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extern void gma_crtc_save(struct drm_crtc *crtc);
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extern void gma_crtc_restore(struct drm_crtc *crtc);
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extern void gma_encoder_prepare(struct drm_encoder *encoder);
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extern void gma_encoder_commit(struct drm_encoder *encoder);
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extern void gma_encoder_destroy(struct drm_encoder *encoder);
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/* Common clock related functions */
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extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
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extern void gma_clock(int refclk, struct gma_clock_t *clock);
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extern bool gma_pll_is_valid(struct drm_crtc *crtc,
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const struct gma_limit_t *limit,
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struct gma_clock_t *clock);
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extern bool gma_find_best_pll(const struct gma_limit_t *limit,
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struct drm_crtc *crtc, int target, int refclk,
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struct gma_clock_t *best_clock);
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#endif
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