diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_crtc.h')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_crtc.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h new file mode 100644 index 000000000..7680cb263 --- /dev/null +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h @@ -0,0 +1,107 @@ +/* + * rcar_du_crtc.h -- R-Car Display Unit CRTCs + * + * Copyright (C) 2013-2015 Renesas Electronics Corporation + * + * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __RCAR_DU_CRTC_H__ +#define __RCAR_DU_CRTC_H__ + +#include <linux/mutex.h> +#include <linux/spinlock.h> +#include <linux/wait.h> + +#include <drm/drmP.h> +#include <drm/drm_crtc.h> + +#include <media/vsp1.h> + +struct rcar_du_group; +struct rcar_du_vsp; + +/** + * struct rcar_du_crtc - the CRTC, representing a DU superposition processor + * @crtc: base DRM CRTC + * @clock: the CRTC functional clock + * @extclock: external pixel dot clock (optional) + * @mmio_offset: offset of the CRTC registers in the DU MMIO block + * @index: CRTC software and hardware index + * @initialized: whether the CRTC has been initialized and clocks enabled + * @vblank_enable: whether vblank events are enabled on this CRTC + * @event: event to post when the pending page flip completes + * @flip_wait: wait queue used to signal page flip completion + * @vblank_lock: protects vblank_wait and vblank_count + * @vblank_wait: wait queue used to signal vertical blanking + * @vblank_count: number of vertical blanking interrupts to wait for + * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC + * @group: CRTC group this CRTC belongs to + * @vsp: VSP feeding video to this CRTC + * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC + */ +struct rcar_du_crtc { + struct drm_crtc crtc; + + struct clk *clock; + struct clk *extclock; + unsigned int mmio_offset; + unsigned int index; + bool initialized; + + bool vblank_enable; + struct drm_pending_vblank_event *event; + wait_queue_head_t flip_wait; + + spinlock_t vblank_lock; + wait_queue_head_t vblank_wait; + unsigned int vblank_count; + + unsigned int outputs; + + struct rcar_du_group *group; + struct rcar_du_vsp *vsp; + unsigned int vsp_pipe; +}; + +#define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) + +/** + * struct rcar_du_crtc_state - Driver-specific CRTC state + * @state: base DRM CRTC state + * @crc: CRC computation configuration + */ +struct rcar_du_crtc_state { + struct drm_crtc_state state; + + struct vsp1_du_crc_config crc; +}; + +#define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state) + +enum rcar_du_output { + RCAR_DU_OUTPUT_DPAD0, + RCAR_DU_OUTPUT_DPAD1, + RCAR_DU_OUTPUT_LVDS0, + RCAR_DU_OUTPUT_LVDS1, + RCAR_DU_OUTPUT_HDMI0, + RCAR_DU_OUTPUT_HDMI1, + RCAR_DU_OUTPUT_TCON, + RCAR_DU_OUTPUT_MAX, +}; + +int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex, + unsigned int hwindex); +void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc); +void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc); + +void rcar_du_crtc_route_output(struct drm_crtc *crtc, + enum rcar_du_output output); +void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc); + +#endif /* __RCAR_DU_CRTC_H__ */ |