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/*
* 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>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#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_syncif - Structure for Sync Interface between sensor and CCDC
* @ccdc_mastermode: Master mode. 1 - Master, 0 - Slave.
* @fldstat: Field state. 0 - Odd Field, 1 - Even Field.
* @datsz: Data size.
* @fldmode: 0 - Progressive, 1 - Interlaced.
* @datapol: 0 - Positive, 1 - Negative.
* @fldpol: 0 - Positive, 1 - Negative.
* @hdpol: 0 - Positive, 1 - Negative.
* @vdpol: 0 - Positive, 1 - Negative.
* @fldout: 0 - Input, 1 - Output.
* @hs_width: Width of the Horizontal Sync pulse, used for HS/VS Output.
* @vs_width: Width of the Vertical Sync pulse, used for HS/VS Output.
* @ppln: Number of pixels per line, used for HS/VS Output.
* @hlprf: Number of half lines per frame, used for HS/VS Output.
* @bt_r656_en: 1 - Enable ITU-R BT656 mode, 0 - Sync mode.
*/
struct ispccdc_syncif {
u8 ccdc_mastermode;
u8 fldstat;
u8 datsz;
u8 fldmode;
u8 datapol;
u8 fldpol;
u8 hdpol;
u8 vdpol;
u8 fldout;
u8 hs_width;
u8 vs_width;
u8 ppln;
u8 hlprf;
u8 bt_r656_en;
};
/*
* struct ispccdc_vp - Structure for Video Port parameters
* @pixelclk: Input pixel clock in Hz
*/
struct ispccdc_vp {
unsigned int pixelclk;
};
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;
u32 table;
struct iovm_struct *iovm;
};
/*
* ispccdc_lsc - CCDC LSC parameters
* @update_config: Set when user changes config
* @request_enable: Whether LSC is requested to be enabled
* @config: LSC config set by user
* @update_table: Set when user provides a new LSC table to table_new
* @table_new: LSC table set by user, ISP address
* @table_inuse: LSC table currently in use, ISP address
*/
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
/*
* 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
* @input: Active input
* @output: Active outputs
* @video_out: Output video node
* @error: A hardware error occured during capture
* @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
* @syncif: Interface synchronization configuration
* @vpcfg: Video port configuration
* @underrun: A buffer underrun occured 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
* @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];
enum ccdc_input_entity input;
unsigned int output;
struct isp_video video_out;
unsigned int error;
unsigned int alaw:1,
lpf:1,
obclamp:1,
fpc_en:1;
struct omap3isp_ccdc_blcomp blcomp;
struct omap3isp_ccdc_bclamp clamp;
struct omap3isp_ccdc_fpc fpc;
struct ispccdc_lsc lsc;
unsigned int update;
unsigned int shadow_update;
struct ispccdc_syncif syncif;
struct ispccdc_vp vpcfg;
unsigned int underrun:1;
enum isp_pipeline_stream_state state;
spinlock_t lock;
wait_queue_head_t wait;
unsigned int stopping;
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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