1 files changed, 337 insertions, 0 deletions
diff --git a/drivers/staging/media/rkisp1/rkisp1-common.h b/drivers/staging/media/rkisp1/rkisp1-common.h
new file mode 100644
index 000000000000..369a401b098a
--- /dev/null
+++ b/drivers/staging/media/rkisp1/rkisp1-common.h
@@ -0,0 +1,337 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Rockchip ISP1 Driver - Common definitions
+ *
+ * Copyright (C) 2019 Collabora, Ltd.
+ *
+ * Based on Rockchip ISP1 driver by Rockchip Electronics Co., Ltd.
+ * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
+ */
+
+#ifndef _RKISP1_COMMON_H
+#define _RKISP1_COMMON_H
+
+#include <linux/clk.h>
+#include <linux/mutex.h>
+#include <media/media-device.h>
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/videobuf2-v4l2.h>
+
+#include "rkisp1-regs.h"
+#include "uapi/rkisp1-config.h"
+
+#define RKISP1_ISP_MAX_WIDTH		4032
+#define RKISP1_ISP_MAX_HEIGHT		3024
+#define RKISP1_ISP_MIN_WIDTH		32
+#define RKISP1_ISP_MIN_HEIGHT		32
+
+#define RKISP1_RSZ_MP_SRC_MAX_WIDTH		4416
+#define RKISP1_RSZ_MP_SRC_MAX_HEIGHT		3312
+#define RKISP1_RSZ_SP_SRC_MAX_WIDTH		1920
+#define RKISP1_RSZ_SP_SRC_MAX_HEIGHT		1920
+#define RKISP1_RSZ_SRC_MIN_WIDTH		32
+#define RKISP1_RSZ_SRC_MIN_HEIGHT		16
+
+#define RKISP1_DEFAULT_WIDTH		800
+#define RKISP1_DEFAULT_HEIGHT		600
+
+#define RKISP1_DRIVER_NAME	"rkisp1"
+#define RKISP1_BUS_INFO		"platform:" RKISP1_DRIVER_NAME
+
+#define RKISP1_MAX_BUS_CLK	8
+
+enum rkisp1_rsz_pad {
+	RKISP1_RSZ_PAD_SINK,
+	RKISP1_RSZ_PAD_SRC,
+};
+
+enum rkisp1_stream_id {
+	RKISP1_MAINPATH,
+	RKISP1_SELFPATH,
+};
+
+enum rkisp1_fmt_pix_type {
+	RKISP1_FMT_YUV,
+	RKISP1_FMT_RGB,
+	RKISP1_FMT_BAYER,
+	RKISP1_FMT_JPEG,
+};
+
+enum rkisp1_fmt_raw_pat_type {
+	RKISP1_RAW_RGGB = 0,
+	RKISP1_RAW_GRBG,
+	RKISP1_RAW_GBRG,
+	RKISP1_RAW_BGGR,
+};
+
+enum rkisp1_isp_pad {
+	RKISP1_ISP_PAD_SINK_VIDEO,
+	RKISP1_ISP_PAD_SINK_PARAMS,
+	RKISP1_ISP_PAD_SOURCE_VIDEO,
+	RKISP1_ISP_PAD_SOURCE_STATS,
+	RKISP1_ISP_PAD_MAX
+};
+
+/*
+ * struct rkisp1_sensor_async - Sensor information
+ * @mbus: media bus configuration
+ */
+struct rkisp1_sensor_async {
+	struct v4l2_async_subdev asd;
+	struct v4l2_mbus_config mbus;
+	unsigned int lanes;
+	struct v4l2_subdev *sd;
+	struct v4l2_ctrl *pixel_rate_ctrl;
+	struct phy *dphy;
+};
+
+/*
+ * struct rkisp1_isp - ISP sub-device
+ *
+ * See Cropping regions of ISP in rkisp1.c for details
+ * @sink_frm: input size, don't have to be equal to sensor size
+ * @sink_fmt: input format
+ * @sink_crop: crop for sink pad
+ * @src_fmt: output format
+ * @src_crop: output size
+ *
+ * @is_dphy_errctrl_disabled : if dphy errctrl is disabled (avoid endless interrupt)
+ * @frame_sequence: used to synchronize frame_id between video devices.
+ * @quantization: output quantization
+ */
+struct rkisp1_isp {
+	struct v4l2_subdev sd;
+	struct media_pad pads[RKISP1_ISP_PAD_MAX];
+	struct v4l2_subdev_pad_config pad_cfg[RKISP1_ISP_PAD_MAX];
+	const struct rkisp1_isp_mbus_info *sink_fmt;
+	const struct rkisp1_isp_mbus_info *src_fmt;
+	bool is_dphy_errctrl_disabled;
+	atomic_t frame_sequence;
+};
+
+struct rkisp1_vdev_node {
+	struct vb2_queue buf_queue;
+	struct mutex vlock; /* ioctl serialization mutex */
+	struct video_device vdev;
+	struct media_pad pad;
+};
+
+struct rkisp1_buffer {
+	struct vb2_v4l2_buffer vb;
+	struct list_head queue;
+	union {
+		u32 buff_addr[VIDEO_MAX_PLANES];
+		void *vaddr[VIDEO_MAX_PLANES];
+	};
+};
+
+struct rkisp1_dummy_buffer {
+	void *vaddr;
+	dma_addr_t dma_addr;
+	u32 size;
+};
+
+struct rkisp1_device;
+
+/*
+ * struct rkisp1_capture - ISP capture video device
+ *
+ * @pix.fmt: buffer format
+ * @pix.info: pixel information
+ * @pix.cfg: pixel configuration
+ *
+ * @buf.lock: lock to protect buf_queue
+ * @buf.queue: queued buffer list
+ * @buf.dummy: dummy space to store dropped data
+ *
+ * rkisp1 use shadowsock registers, so it need two buffer at a time
+ * @buf.curr: the buffer used for current frame
+ * @buf.next: the buffer used for next frame
+ */
+struct rkisp1_capture {
+	struct rkisp1_vdev_node vnode;
+	struct rkisp1_device *rkisp1;
+	enum rkisp1_stream_id id;
+	struct rkisp1_capture_ops *ops;
+	const struct rkisp1_capture_config *config;
+	bool is_streaming;
+	bool is_stopping;
+	wait_queue_head_t done;
+	unsigned int sp_y_stride;
+	struct {
+		/* protects queue, curr and next */
+		spinlock_t lock;
+		struct list_head queue;
+		struct rkisp1_dummy_buffer dummy;
+		struct rkisp1_buffer *curr;
+		struct rkisp1_buffer *next;
+	} buf;
+	struct {
+		const struct rkisp1_capture_fmt_cfg *cfg;
+		const struct v4l2_format_info *info;
+		struct v4l2_pix_format_mplane fmt;
+	} pix;
+};
+
+/*
+ * struct rkisp1_stats - ISP Statistics device
+ *
+ * @irq_lock: buffer queue lock
+ * @stat: stats buffer list
+ * @readout_wq: workqueue for statistics information read
+ */
+struct rkisp1_stats {
+	struct rkisp1_vdev_node vnode;
+	struct rkisp1_device *rkisp1;
+
+	spinlock_t irq_lock;
+	struct list_head stat;
+	struct v4l2_format vdev_fmt;
+	bool is_streaming;
+
+	struct workqueue_struct *readout_wq;
+	struct mutex wq_lock;
+};
+
+/*
+ * struct rkisp1_params - ISP input parameters device
+ *
+ * @cur_params: Current ISP parameters
+ * @is_first_params: the first params should take effect immediately
+ */
+struct rkisp1_params {
+	struct rkisp1_vdev_node vnode;
+	struct rkisp1_device *rkisp1;
+
+	spinlock_t config_lock;
+	struct list_head params;
+	struct rkisp1_params_cfg cur_params;
+	struct v4l2_format vdev_fmt;
+	bool is_streaming;
+	bool is_first_params;
+
+	enum v4l2_quantization quantization;
+	enum rkisp1_fmt_raw_pat_type raw_type;
+};
+
+struct rkisp1_resizer {
+	struct v4l2_subdev sd;
+	enum rkisp1_stream_id id;
+	struct rkisp1_device *rkisp1;
+	struct media_pad pads[RKISP1_ISP_PAD_MAX];
+	struct v4l2_subdev_pad_config pad_cfg[RKISP1_ISP_PAD_MAX];
+	const struct rkisp1_rsz_config *config;
+	enum rkisp1_fmt_pix_type fmt_type;
+};
+
+struct rkisp1_debug {
+	struct dentry *debugfs_dir;
+	unsigned long data_loss;
+	unsigned long pic_size_error;
+	unsigned long mipi_error;
+	unsigned long stats_error;
+	unsigned long stop_timeout[2];
+	unsigned long frame_drop[2];
+};
+
+/*
+ * struct rkisp1_device - ISP platform device
+ * @base_addr: base register address
+ * @active_sensor: sensor in-use, set when streaming on
+ * @isp: ISP sub-device
+ * @rkisp1_capture: capture video device
+ * @stats: ISP statistics output device
+ * @params: ISP input parameters device
+ */
+struct rkisp1_device {
+	void __iomem *base_addr;
+	int irq;
+	struct device *dev;
+	unsigned int clk_size;
+	struct clk_bulk_data clks[RKISP1_MAX_BUS_CLK];
+	struct v4l2_device v4l2_dev;
+	struct v4l2_ctrl_handler ctrl_handler;
+	struct media_device media_dev;
+	struct v4l2_async_notifier notifier;
+	struct rkisp1_sensor_async *active_sensor;
+	struct rkisp1_isp isp;
+	struct rkisp1_resizer resizer_devs[2];
+	struct rkisp1_capture capture_devs[2];
+	struct rkisp1_stats stats;
+	struct rkisp1_params params;
+	struct media_pipeline pipe;
+	struct vb2_alloc_ctx *alloc_ctx;
+	struct rkisp1_debug debug;
+};
+
+/*
+ * struct rkisp1_isp_mbus_info - ISP pad format info
+ *
+ * Translate mbus_code to hardware format values
+ *
+ * @bus_width: used for parallel
+ */
+struct rkisp1_isp_mbus_info {
+	u32 mbus_code;
+	enum rkisp1_fmt_pix_type fmt_type;
+	u32 mipi_dt;
+	u32 yuv_seq;
+	u8 bus_width;
+	enum rkisp1_fmt_raw_pat_type bayer_pat;
+	unsigned int direction;
+};
+
+static inline void
+rkisp1_write(struct rkisp1_device *rkisp1, u32 val, unsigned int addr)
+{
+	writel(val, rkisp1->base_addr + addr);
+}
+
+static inline u32 rkisp1_read(struct rkisp1_device *rkisp1, unsigned int addr)
+{
+	return readl(rkisp1->base_addr + addr);
+}
+
+void rkisp1_sd_adjust_crop_rect(struct v4l2_rect *crop,
+				const struct v4l2_rect *bounds);
+
+void rkisp1_sd_adjust_crop(struct v4l2_rect *crop,
+			   const struct v4l2_mbus_framefmt *bounds);
+
+int rkisp1_isp_register(struct rkisp1_device *rkisp1,
+			struct v4l2_device *v4l2_dev);
+void rkisp1_isp_unregister(struct rkisp1_device *rkisp1);
+
+const struct rkisp1_isp_mbus_info *rkisp1_isp_mbus_info_get(u32 mbus_code);
+
+void rkisp1_isp_isr(struct rkisp1_device *rkisp1);
+void rkisp1_mipi_isr(struct rkisp1_device *rkisp1);
+void rkisp1_capture_isr(struct rkisp1_device *rkisp1);
+void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris);
+void rkisp1_params_isr(struct rkisp1_device *rkisp1, u32 isp_mis);
+
+int rkisp1_capture_devs_register(struct rkisp1_device *rkisp1);
+void rkisp1_capture_devs_unregister(struct rkisp1_device *rkisp1);
+
+int rkisp1_resizer_devs_register(struct rkisp1_device *rkisp1);
+void rkisp1_resizer_devs_unregister(struct rkisp1_device *rkisp1);
+
+int rkisp1_stats_register(struct rkisp1_stats *stats,
+			  struct v4l2_device *v4l2_dev,
+			  struct rkisp1_device *rkisp1);
+void rkisp1_stats_unregister(struct rkisp1_stats *stats);
+
+void rkisp1_params_configure(struct rkisp1_params *params,
+			     enum rkisp1_fmt_raw_pat_type bayer_pat,
+			     enum v4l2_quantization quantization);
+void rkisp1_params_disable(struct rkisp1_params *params);
+int rkisp1_params_register(struct rkisp1_params *params,
+			   struct v4l2_device *v4l2_dev,
+			   struct rkisp1_device *rkisp1);
+void rkisp1_params_unregister(struct rkisp1_params *params);
+
+void rkisp1_params_isr_handler(struct rkisp1_device *rkisp1, u32 isp_mis);
+
+#endif /* _RKISP1_COMMON_H */