/* 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 0 x00
#define CCDC_STOP_REQUEST 0 x01
#define CCDC_STOP_EXECUTED (0 x02 | CCDC_STOP_REQUEST)
#define CCDC_STOP_CCDC_FINISHED 0 x04
#define CCDC_STOP_LSC_FINISHED 0 x08
#define CCDC_STOP_FINISHED \
(CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
#define CCDC_EVENT_VD1 0 x10
#define CCDC_EVENT_VD0 0 x20
#define CCDC_EVENT_LSC_DONE 0 x40
/* 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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