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f76c22ce8f
Legacy (non-atomic) page flip support is added to the driver by using the mode_set_base CRTC function, that allows configuring a new framebuffer for display. Since the function requires the primary plane's fb to be set already, this is done prior to calling the function in the page flip helper and reverted if the flip fails. The vblank interrupt handler is also refactored to support passing an event. The PIPE_TE_STATUS bit is also considered to indicate vblank on medfield only, as explained in psb_enable_vblank. It was tested by running weston on both poulsbo and cedartrail. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191106094400.445834-3-paul.kocialkowski@bootlin.com
99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright © 2006-2011 Intel Corporation
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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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#include <drm/drm_vblank.h>
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struct drm_encoder;
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struct drm_mode_set;
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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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struct drm_modeset_acquire_ctx *ctx);
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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_page_flip(struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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struct drm_pending_vblank_event *event,
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uint32_t page_flip_flags,
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struct drm_modeset_acquire_ctx *ctx);
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extern int gma_crtc_set_config(struct drm_mode_set *set,
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struct drm_modeset_acquire_ctx *ctx);
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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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