Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / rcar-du / rcar_du_drv.h

diff --git a/kernel/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/kernel/drivers/gpu/drm/rcar-du/rcar_du_drv.h
new file mode 100644 (file)
index 0000000..c7c538d
--- /dev/null
+++ b/kernel/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__ */