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