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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* ispccdc.h
*
* TI OMAP3 ISP - CCDC module
*
* Copyright (C) 2009-2010 Nokia Corporation
* Copyright (C) 2009 Texas Instruments, Inc.
*
* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Sakari Ailus <sakari.ailus@iki.fi>
*/
#ifndef OMAP3_ISP_CCDC_H
#define OMAP3_ISP_CCDC_H
#include <linux/omap3isp.h>
#include <linux/workqueue.h>
#include "ispvideo.h"
enum ccdc_input_entity {
CCDC_INPUT_NONE,
CCDC_INPUT_PARALLEL,
CCDC_INPUT_CSI2A,
CCDC_INPUT_CCP2B,
CCDC_INPUT_CSI2C
};
#define CCDC_OUTPUT_MEMORY (1 << 0)
#define CCDC_OUTPUT_PREVIEW (1 << 1)
#define CCDC_OUTPUT_RESIZER (1 << 2)
#define OMAP3ISP_CCDC_NEVENTS 16
struct ispccdc_fpc {
void *addr;
dma_addr_t dma;
unsigned int fpnum;
};
enum ispccdc_lsc_state {
LSC_STATE_STOPPED = 0,
LSC_STATE_STOPPING = 1,
LSC_STATE_RUNNING = 2,
LSC_STATE_RECONFIG = 3,
};
struct ispccdc_lsc_config_req {
struct list_head list;
struct omap3isp_ccdc_lsc_config config;
unsigned char enable;
struct {
void *addr;
dma_addr_t dma;
struct sg_table sgt;
} table;
};
/*
* ispccdc_lsc - CCDC LSC parameters
*/
struct ispccdc_lsc {
enum ispccdc_lsc_state state;
struct work_struct table_work;
/* LSC queue of configurations */
spinlock_t req_lock;
struct ispccdc_lsc_config_req *request; /* requested configuration */
struct ispccdc_lsc_config_req *active; /* active configuration */
struct list_head free_queue; /* configurations for freeing */
};
#define CCDC_STOP_NOT_REQUESTED 0x00
#define CCDC_STOP_REQUEST 0x01
#define CCDC_STOP_EXECUTED (0x02 | CCDC_STOP_REQUEST)
#define CCDC_STOP_CCDC_FINISHED 0x04
#define CCDC_STOP_LSC_FINISHED 0x08
#define CCDC_STOP_FINISHED \
(CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
#define CCDC_EVENT_VD1 0x10
#define CCDC_EVENT_VD0 0x20
#define CCDC_EVENT_LSC_DONE 0x40
/* Sink and source CCDC pads */
#define CCDC_PAD_SINK 0
#define CCDC_PAD_SOURCE_OF 1
#define CCDC_PAD_SOURCE_VP 2
#define CCDC_PADS_NUM 3
#define CCDC_FIELD_TOP 1
#define CCDC_FIELD_BOTTOM 2
#define CCDC_FIELD_BOTH 3
/*
* struct isp_ccdc_device - Structure for the CCDC module to store its own
* information
* @subdev: V4L2 subdevice
* @pads: Sink and source media entity pads
* @formats: Active video formats
* @crop: Active crop rectangle on the OF source pad
* @input: Active input
* @output: Active outputs
* @video_out: Output video node
* @alaw: A-law compression enabled (1) or disabled (0)
* @lpf: Low pass filter enabled (1) or disabled (0)
* @obclamp: Optical-black clamp enabled (1) or disabled (0)
* @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
* @blcomp: Black level compensation configuration
* @clamp: Optical-black or digital clamp configuration
* @fpc: Faulty pixels correction configuration
* @lsc: Lens shading compensation configuration
* @update: Bitmask of controls to update during the next interrupt
* @shadow_update: Controls update in progress by userspace
* @bt656: Whether the input interface uses BT.656 synchronization
* @fields: The fields (CCDC_FIELD_*) stored in the current buffer
* @underrun: A buffer underrun occurred and a new buffer has been queued
* @state: Streaming state
* @lock: Serializes shadow_update with interrupt handler
* @wait: Wait queue used to stop the module
* @stopping: Stopping state
* @running: Is the CCDC hardware running
* @ioctl_lock: Serializes ioctl calls and LSC requests freeing
*/
struct isp_ccdc_device {
struct v4l2_subdev subdev;
struct media_pad pads[CCDC_PADS_NUM];
struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
struct v4l2_rect crop;
enum ccdc_input_entity input;
unsigned int output;
struct isp_video video_out;
unsigned int alaw:1,
lpf:1,
obclamp:1,
fpc_en:1;
struct omap3isp_ccdc_blcomp blcomp;
struct omap3isp_ccdc_bclamp clamp;
struct ispccdc_fpc fpc;
struct ispccdc_lsc lsc;
unsigned int update;
unsigned int shadow_update;
bool bt656;
unsigned int fields;
unsigned int underrun:1;
enum isp_pipeline_stream_state state;
spinlock_t lock;
wait_queue_head_t wait;
unsigned int stopping;
bool running;
struct mutex ioctl_lock;
};
struct isp_device;
int omap3isp_ccdc_init(struct isp_device *isp);
void omap3isp_ccdc_cleanup(struct isp_device *isp);
int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
struct v4l2_device *vdev);
void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
void omap3isp_ccdc_restore_context(struct isp_device *isp);
void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
unsigned int *max_rate);
#endif /* OMAP3_ISP_CCDC_H */
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