diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_drv.h')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_drv.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h new file mode 100644 index 000000000..c7c538dd2 --- /dev/null +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h @@ -0,0 +1,117 @@ +/* + * rcar_du_drv.h -- R-Car Display Unit DRM driver + * + * Copyright (C) 2013-2014 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_DRV_H__ +#define __RCAR_DU_DRV_H__ + +#include <linux/kernel.h> +#include <linux/wait.h> + +#include "rcar_du_crtc.h" +#include "rcar_du_group.h" + +struct clk; +struct device; +struct drm_device; +struct drm_fbdev_cma; +struct rcar_du_device; +struct rcar_du_lvdsenc; + +#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and clock */ +#define RCAR_DU_FEATURE_EXT_CTRL_REGS (1 << 1) /* Has extended control registers */ + +#define RCAR_DU_QUIRK_ALIGN_128B (1 << 0) /* Align pitches to 128 bytes */ +#define RCAR_DU_QUIRK_LVDS_LANES (1 << 1) /* LVDS lanes 1 and 3 inverted */ + +/* + * struct rcar_du_output_routing - Output routing specification + * @possible_crtcs: bitmask of possible CRTCs for the output + * @encoder_type: DRM type of the internal encoder associated with the output + * @port: device tree port number corresponding to this output route + * + * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data + * specify the valid SoC outputs, which CRTCs can drive the output, and the type + * of in-SoC encoder for the output. + */ +struct rcar_du_output_routing { + unsigned int possible_crtcs; + unsigned int encoder_type; + unsigned int port; +}; + +/* + * struct rcar_du_device_info - DU model-specific information + * @features: device features (RCAR_DU_FEATURE_*) + * @quirks: device quirks (RCAR_DU_QUIRK_*) + * @num_crtcs: total number of CRTCs + * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*) + * @num_lvds: number of internal LVDS encoders + */ +struct rcar_du_device_info { + unsigned int features; + unsigned int quirks; + unsigned int num_crtcs; + struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX]; + unsigned int num_lvds; +}; + +#define RCAR_DU_MAX_CRTCS 3 +#define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2) +#define RCAR_DU_MAX_LVDS 2 + +struct rcar_du_device { + struct device *dev; + const struct rcar_du_device_info *info; + + void __iomem *mmio; + + struct drm_device *ddev; + struct drm_fbdev_cma *fbdev; + + struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS]; + unsigned int num_crtcs; + + struct rcar_du_group groups[RCAR_DU_MAX_GROUPS]; + + unsigned int dpad0_source; + struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS]; + + struct { + wait_queue_head_t wait; + u32 pending; + } commit; +}; + +static inline bool rcar_du_has(struct rcar_du_device *rcdu, + unsigned int feature) +{ + return rcdu->info->features & feature; +} + +static inline bool rcar_du_needs(struct rcar_du_device *rcdu, + unsigned int quirk) +{ + return rcdu->info->quirks & quirk; +} + +static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg) +{ + return ioread32(rcdu->mmio + reg); +} + +static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data) +{ + iowrite32(data, rcdu->mmio + reg); +} + +#endif /* __RCAR_DU_DRV_H__ */ |