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/* SPDX-License-Identifier: GPL-2.0 */
/*
* camss-vfe.h
*
* Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module
*
* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
* Copyright (C) 2015-2018 Linaro Ltd.
*/
#ifndef QC_MSM_CAMSS_VFE_H
#define QC_MSM_CAMSS_VFE_H
#include <linux/clk.h>
#include <linux/spinlock_types.h>
#include <media/media-entity.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include "camss-video.h"
#include "camss-vfe-gen1.h"
#define MSM_VFE_PAD_SINK 0
#define MSM_VFE_PAD_SRC 1
#define MSM_VFE_PADS_NUM 2
#define MSM_VFE_IMAGE_MASTERS_NUM 7
#define MSM_VFE_COMPOSITE_IRQ_NUM 4
/* VFE halt timeout */
#define VFE_HALT_TIMEOUT_MS 100
/* Frame drop value. VAL + UPDATES - 1 should not exceed 31 */
#define VFE_FRAME_DROP_VAL 30
#define vfe_line_array(ptr_line) \
((const struct vfe_line (*)[]) &(ptr_line)[-(ptr_line)->id])
#define to_vfe(ptr_line) \
container_of(vfe_line_array(ptr_line), struct vfe_device, line)
enum vfe_output_state {
VFE_OUTPUT_OFF,
VFE_OUTPUT_RESERVED,
VFE_OUTPUT_SINGLE,
VFE_OUTPUT_CONTINUOUS,
VFE_OUTPUT_IDLE,
VFE_OUTPUT_STOPPING
};
enum vfe_line_id {
VFE_LINE_NONE = -1,
VFE_LINE_RDI0 = 0,
VFE_LINE_RDI1 = 1,
VFE_LINE_RDI2 = 2,
VFE_LINE_PIX = 3,
VFE_LINE_NUM_GEN1 = 4,
VFE_LINE_NUM_MAX = 4
};
struct vfe_output {
u8 wm_num;
u8 wm_idx[3];
struct camss_buffer *buf[2];
struct camss_buffer *last_buffer;
struct list_head pending_bufs;
unsigned int drop_update_idx;
union {
struct {
int active_buf;
int wait_sof;
} gen1;
};
enum vfe_output_state state;
unsigned int sequence;
int wait_reg_update;
struct completion sof;
struct completion reg_update;
};
struct vfe_line {
enum vfe_line_id id;
struct v4l2_subdev subdev;
struct media_pad pads[MSM_VFE_PADS_NUM];
struct v4l2_mbus_framefmt fmt[MSM_VFE_PADS_NUM];
struct v4l2_rect compose;
struct v4l2_rect crop;
struct camss_video video_out;
struct vfe_output output;
const struct vfe_format *formats;
unsigned int nformats;
};
struct vfe_device;
struct vfe_hw_ops {
void (*enable_irq_common)(struct vfe_device *vfe);
void (*global_reset)(struct vfe_device *vfe);
void (*hw_version_read)(struct vfe_device *vfe, struct device *dev);
irqreturn_t (*isr)(int irq, void *dev);
void (*isr_read)(struct vfe_device *vfe, u32 *value0, u32 *value1);
void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id);
void (*reg_update_clear)(struct vfe_device *vfe,
enum vfe_line_id line_id);
void (*subdev_init)(struct device *dev, struct vfe_device *vfe);
int (*vfe_disable)(struct vfe_line *line);
int (*vfe_enable)(struct vfe_line *line);
int (*vfe_halt)(struct vfe_device *vfe);
void (*violation_read)(struct vfe_device *vfe);
};
struct vfe_isr_ops {
void (*reset_ack)(struct vfe_device *vfe);
void (*halt_ack)(struct vfe_device *vfe);
void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id);
void (*sof)(struct vfe_device *vfe, enum vfe_line_id line_id);
void (*comp_done)(struct vfe_device *vfe, u8 comp);
void (*wm_done)(struct vfe_device *vfe, u8 wm);
};
struct vfe_device {
struct camss *camss;
u8 id;
void __iomem *base;
u32 irq;
char irq_name[30];
struct camss_clock *clock;
int nclocks;
struct completion reset_complete;
struct completion halt_complete;
struct mutex power_lock;
int power_count;
struct mutex stream_lock;
int stream_count;
spinlock_t output_lock;
enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM];
struct vfe_line line[VFE_LINE_NUM_MAX];
u8 line_num;
u32 reg_update;
u8 was_streaming;
const struct vfe_hw_ops *ops;
const struct vfe_hw_ops_gen1 *ops_gen1;
struct vfe_isr_ops isr_ops;
struct camss_video_ops video_ops;
};
struct resources;
int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
const struct resources *res, u8 id);
int msm_vfe_register_entities(struct vfe_device *vfe,
struct v4l2_device *v4l2_dev);
void msm_vfe_unregister_entities(struct vfe_device *vfe);
void msm_vfe_get_vfe_id(struct media_entity *entity, u8 *id);
void msm_vfe_get_vfe_line_id(struct media_entity *entity, enum vfe_line_id *id);
/*
* vfe_buf_add_pending - Add output buffer to list of pending
* @output: VFE output
* @buffer: Video buffer
*/
void vfe_buf_add_pending(struct vfe_output *output, struct camss_buffer *buffer);
struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output);
/*
* vfe_disable - Disable streaming on VFE line
* @line: VFE line
*
* Return 0 on success or a negative error code otherwise
*/
int vfe_disable(struct vfe_line *line);
int vfe_flush_buffers(struct camss_video *vid, enum vb2_buffer_state state);
/*
* vfe_isr_comp_done - Process composite image done interrupt
* @vfe: VFE Device
* @comp: Composite image id
*/
void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp);
void vfe_isr_reset_ack(struct vfe_device *vfe);
int vfe_put_output(struct vfe_line *line);
int vfe_release_wm(struct vfe_device *vfe, u8 wm);
int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id);
extern const struct vfe_hw_ops vfe_ops_4_1;
extern const struct vfe_hw_ops vfe_ops_4_7;
extern const struct vfe_hw_ops vfe_ops_4_8;
#endif /* QC_MSM_CAMSS_VFE_H */
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