mirror of https://gitee.com/openkylin/linux.git
943 lines
23 KiB
C
943 lines
23 KiB
C
/*
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* Samsung S5P SoC series camera interface (camera capture) driver
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*
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* Copyright (c) 2010 Samsung Electronics Co., Ltd
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* Author: Sylwester Nawrocki, <s.nawrocki@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/version.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/bug.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-mem2mem.h>
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#include <media/videobuf2-core.h>
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#include <media/videobuf2-dma-contig.h>
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#include "fimc-core.h"
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static struct v4l2_subdev *fimc_subdev_register(struct fimc_dev *fimc,
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struct s5p_fimc_isp_info *isp_info)
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{
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struct i2c_adapter *i2c_adap;
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struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
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struct v4l2_subdev *sd = NULL;
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i2c_adap = i2c_get_adapter(isp_info->i2c_bus_num);
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if (!i2c_adap)
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return ERR_PTR(-ENOMEM);
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sd = v4l2_i2c_new_subdev_board(&vid_cap->v4l2_dev, i2c_adap,
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isp_info->board_info, NULL);
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if (!sd) {
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v4l2_err(&vid_cap->v4l2_dev, "failed to acquire subdev\n");
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return NULL;
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}
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v4l2_info(&vid_cap->v4l2_dev, "subdevice %s registered successfuly\n",
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isp_info->board_info->type);
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return sd;
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}
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static void fimc_subdev_unregister(struct fimc_dev *fimc)
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{
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struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
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struct i2c_client *client;
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if (vid_cap->input_index < 0)
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return; /* Subdevice already released or not registered. */
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if (vid_cap->sd) {
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v4l2_device_unregister_subdev(vid_cap->sd);
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client = v4l2_get_subdevdata(vid_cap->sd);
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i2c_unregister_device(client);
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i2c_put_adapter(client->adapter);
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vid_cap->sd = NULL;
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}
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vid_cap->input_index = -1;
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}
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/**
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* fimc_subdev_attach - attach v4l2_subdev to camera host interface
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*
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* @fimc: FIMC device information
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* @index: index to the array of available subdevices,
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* -1 for full array search or non negative value
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* to select specific subdevice
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*/
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static int fimc_subdev_attach(struct fimc_dev *fimc, int index)
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{
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struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
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struct s5p_platform_fimc *pdata = fimc->pdata;
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struct s5p_fimc_isp_info *isp_info;
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struct v4l2_subdev *sd;
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int i;
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for (i = 0; i < FIMC_MAX_CAMIF_CLIENTS; ++i) {
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isp_info = pdata->isp_info[i];
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if (!isp_info || (index >= 0 && i != index))
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continue;
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sd = fimc_subdev_register(fimc, isp_info);
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if (sd) {
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vid_cap->sd = sd;
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vid_cap->input_index = i;
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return 0;
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}
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}
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vid_cap->input_index = -1;
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vid_cap->sd = NULL;
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v4l2_err(&vid_cap->v4l2_dev, "fimc%d: sensor attach failed\n",
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fimc->id);
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return -ENODEV;
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}
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static int fimc_isp_subdev_init(struct fimc_dev *fimc, unsigned int index)
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{
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struct s5p_fimc_isp_info *isp_info;
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int ret;
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if (index >= FIMC_MAX_CAMIF_CLIENTS)
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return -EINVAL;
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isp_info = fimc->pdata->isp_info[index];
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if (!isp_info)
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return -EINVAL;
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if (isp_info->clk_frequency)
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clk_set_rate(fimc->clock[CLK_CAM], isp_info->clk_frequency);
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ret = clk_enable(fimc->clock[CLK_CAM]);
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if (ret)
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return ret;
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ret = fimc_subdev_attach(fimc, index);
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if (ret)
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return ret;
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ret = fimc_hw_set_camera_polarity(fimc, isp_info);
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if (ret)
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return ret;
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ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 1);
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if (!ret)
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return ret;
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/* enabling power failed so unregister subdev */
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fimc_subdev_unregister(fimc);
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v4l2_err(&fimc->vid_cap.v4l2_dev, "ISP initialization failed: %d\n",
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ret);
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return ret;
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}
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/*
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* At least one buffer on the pending_buf_q queue is required.
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* Locking: The caller holds fimc->slock spinlock.
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*/
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int fimc_vid_cap_buf_queue(struct fimc_dev *fimc,
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struct fimc_vid_buffer *fimc_vb)
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{
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struct fimc_vid_cap *cap = &fimc->vid_cap;
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struct fimc_ctx *ctx = cap->ctx;
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int ret = 0;
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BUG_ON(!fimc || !fimc_vb);
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ret = fimc_prepare_addr(ctx, &fimc_vb->vb, &ctx->d_frame,
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&fimc_vb->paddr);
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if (ret)
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return ret;
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if (test_bit(ST_CAPT_STREAM, &fimc->state)) {
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fimc_pending_queue_add(cap, fimc_vb);
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} else {
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/* Setup the buffer directly for processing. */
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int buf_id = (cap->reqbufs_count == 1) ? -1 : cap->buf_index;
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fimc_hw_set_output_addr(fimc, &fimc_vb->paddr, buf_id);
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fimc_vb->index = cap->buf_index;
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active_queue_add(cap, fimc_vb);
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if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
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cap->buf_index = 0;
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}
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return ret;
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}
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static int fimc_stop_capture(struct fimc_dev *fimc)
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{
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unsigned long flags;
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struct fimc_vid_cap *cap;
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struct fimc_vid_buffer *buf;
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cap = &fimc->vid_cap;
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if (!fimc_capture_active(fimc))
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return 0;
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spin_lock_irqsave(&fimc->slock, flags);
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set_bit(ST_CAPT_SHUT, &fimc->state);
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fimc_deactivate_capture(fimc);
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spin_unlock_irqrestore(&fimc->slock, flags);
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wait_event_timeout(fimc->irq_queue,
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!test_bit(ST_CAPT_SHUT, &fimc->state),
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FIMC_SHUTDOWN_TIMEOUT);
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v4l2_subdev_call(cap->sd, video, s_stream, 0);
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spin_lock_irqsave(&fimc->slock, flags);
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fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_PEND |
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1 << ST_CAPT_STREAM);
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fimc->vid_cap.active_buf_cnt = 0;
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/* Release buffers that were enqueued in the driver by videobuf2. */
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while (!list_empty(&cap->pending_buf_q)) {
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buf = pending_queue_pop(cap);
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vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
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}
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while (!list_empty(&cap->active_buf_q)) {
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buf = active_queue_pop(cap);
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vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
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}
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spin_unlock_irqrestore(&fimc->slock, flags);
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dbg("state: 0x%lx", fimc->state);
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return 0;
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}
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static int start_streaming(struct vb2_queue *q)
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{
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struct fimc_ctx *ctx = q->drv_priv;
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struct fimc_dev *fimc = ctx->fimc_dev;
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struct s5p_fimc_isp_info *isp_info;
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int ret;
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ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
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if (ret && ret != -ENOIOCTLCMD)
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return ret;
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ret = fimc_prepare_config(ctx, ctx->state);
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if (ret)
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return ret;
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isp_info = fimc->pdata->isp_info[fimc->vid_cap.input_index];
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fimc_hw_set_camera_type(fimc, isp_info);
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fimc_hw_set_camera_source(fimc, isp_info);
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fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
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if (ctx->state & FIMC_PARAMS) {
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ret = fimc_set_scaler_info(ctx);
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if (ret) {
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err("Scaler setup error");
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return ret;
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}
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fimc_hw_set_input_path(ctx);
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fimc_hw_set_prescaler(ctx);
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fimc_hw_set_mainscaler(ctx);
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fimc_hw_set_target_format(ctx);
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fimc_hw_set_rotation(ctx);
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fimc_hw_set_effect(ctx);
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}
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fimc_hw_set_output_path(ctx);
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fimc_hw_set_out_dma(ctx);
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INIT_LIST_HEAD(&fimc->vid_cap.pending_buf_q);
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INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
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fimc->vid_cap.active_buf_cnt = 0;
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fimc->vid_cap.frame_count = 0;
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fimc->vid_cap.buf_index = fimc_hw_get_frame_index(fimc);
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set_bit(ST_CAPT_PEND, &fimc->state);
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return 0;
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}
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static int stop_streaming(struct vb2_queue *q)
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{
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struct fimc_ctx *ctx = q->drv_priv;
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struct fimc_dev *fimc = ctx->fimc_dev;
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unsigned long flags;
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spin_lock_irqsave(&fimc->slock, flags);
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if (!fimc_capture_running(fimc) && !fimc_capture_pending(fimc)) {
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spin_unlock_irqrestore(&fimc->slock, flags);
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return -EINVAL;
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}
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spin_unlock_irqrestore(&fimc->slock, flags);
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return fimc_stop_capture(fimc);
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}
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static unsigned int get_plane_size(struct fimc_frame *fr, unsigned int plane)
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{
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if (!fr || plane >= fr->fmt->memplanes)
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return 0;
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dbg("%s: w: %d. h: %d. depth[%d]: %d",
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__func__, fr->width, fr->height, plane, fr->fmt->depth[plane]);
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return fr->f_width * fr->f_height * fr->fmt->depth[plane] / 8;
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}
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static int queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
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unsigned int *num_planes, unsigned long sizes[],
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void *allocators[])
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{
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struct fimc_ctx *ctx = vq->drv_priv;
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struct fimc_fmt *fmt = ctx->d_frame.fmt;
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int i;
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if (!fmt)
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return -EINVAL;
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*num_planes = fmt->memplanes;
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dbg("%s, buffer count=%d, plane count=%d",
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__func__, *num_buffers, *num_planes);
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for (i = 0; i < fmt->memplanes; i++) {
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sizes[i] = get_plane_size(&ctx->d_frame, i);
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dbg("plane: %u, plane_size: %lu", i, sizes[i]);
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allocators[i] = ctx->fimc_dev->alloc_ctx;
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}
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return 0;
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}
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static int buffer_init(struct vb2_buffer *vb)
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{
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/* TODO: */
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return 0;
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}
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static int buffer_prepare(struct vb2_buffer *vb)
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{
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struct vb2_queue *vq = vb->vb2_queue;
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struct fimc_ctx *ctx = vq->drv_priv;
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struct v4l2_device *v4l2_dev = &ctx->fimc_dev->m2m.v4l2_dev;
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int i;
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if (!ctx->d_frame.fmt || vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
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return -EINVAL;
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for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) {
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unsigned long size = get_plane_size(&ctx->d_frame, i);
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if (vb2_plane_size(vb, i) < size) {
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v4l2_err(v4l2_dev, "User buffer too small (%ld < %ld)\n",
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vb2_plane_size(vb, i), size);
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return -EINVAL;
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}
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vb2_set_plane_payload(vb, i, size);
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}
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return 0;
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}
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static void buffer_queue(struct vb2_buffer *vb)
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{
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struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
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struct fimc_dev *fimc = ctx->fimc_dev;
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struct fimc_vid_buffer *buf
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= container_of(vb, struct fimc_vid_buffer, vb);
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struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
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unsigned long flags;
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spin_lock_irqsave(&fimc->slock, flags);
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fimc_vid_cap_buf_queue(fimc, buf);
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dbg("active_buf_cnt: %d", fimc->vid_cap.active_buf_cnt);
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if (vid_cap->active_buf_cnt >= vid_cap->reqbufs_count ||
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vid_cap->active_buf_cnt >= FIMC_MAX_OUT_BUFS) {
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if (!test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
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fimc_activate_capture(ctx);
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dbg("");
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}
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}
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spin_unlock_irqrestore(&fimc->slock, flags);
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}
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static void fimc_lock(struct vb2_queue *vq)
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{
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struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
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mutex_lock(&ctx->fimc_dev->lock);
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}
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static void fimc_unlock(struct vb2_queue *vq)
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{
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struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
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mutex_unlock(&ctx->fimc_dev->lock);
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}
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static struct vb2_ops fimc_capture_qops = {
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.queue_setup = queue_setup,
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.buf_prepare = buffer_prepare,
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.buf_queue = buffer_queue,
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.buf_init = buffer_init,
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.wait_prepare = fimc_unlock,
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.wait_finish = fimc_lock,
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.start_streaming = start_streaming,
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.stop_streaming = stop_streaming,
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};
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static int fimc_capture_open(struct file *file)
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{
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struct fimc_dev *fimc = video_drvdata(file);
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int ret = 0;
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dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
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/* Return if the corresponding video mem2mem node is already opened. */
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if (fimc_m2m_active(fimc))
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return -EBUSY;
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if (++fimc->vid_cap.refcnt == 1) {
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ret = fimc_isp_subdev_init(fimc, 0);
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if (ret) {
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fimc->vid_cap.refcnt--;
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return -EIO;
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}
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}
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file->private_data = fimc->vid_cap.ctx;
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return 0;
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}
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static int fimc_capture_close(struct file *file)
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{
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struct fimc_dev *fimc = video_drvdata(file);
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dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
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if (--fimc->vid_cap.refcnt == 0) {
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fimc_stop_capture(fimc);
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vb2_queue_release(&fimc->vid_cap.vbq);
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v4l2_err(&fimc->vid_cap.v4l2_dev, "releasing ISP\n");
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v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
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clk_disable(fimc->clock[CLK_CAM]);
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fimc_subdev_unregister(fimc);
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}
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return 0;
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}
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static unsigned int fimc_capture_poll(struct file *file,
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struct poll_table_struct *wait)
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{
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struct fimc_ctx *ctx = file->private_data;
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struct fimc_dev *fimc = ctx->fimc_dev;
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return vb2_poll(&fimc->vid_cap.vbq, file, wait);
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}
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static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
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{
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struct fimc_ctx *ctx = file->private_data;
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struct fimc_dev *fimc = ctx->fimc_dev;
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return vb2_mmap(&fimc->vid_cap.vbq, vma);
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}
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/* video device file operations */
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static const struct v4l2_file_operations fimc_capture_fops = {
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.owner = THIS_MODULE,
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.open = fimc_capture_open,
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.release = fimc_capture_close,
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.poll = fimc_capture_poll,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
.mmap = fimc_capture_mmap,
|
|
};
|
|
|
|
static int fimc_vidioc_querycap_capture(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
struct fimc_ctx *ctx = file->private_data;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
|
|
strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
|
|
strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
|
|
cap->bus_info[0] = 0;
|
|
cap->version = KERNEL_VERSION(1, 0, 0);
|
|
cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_VIDEO_CAPTURE_MPLANE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Synchronize formats of the camera interface input and attached sensor. */
|
|
static int sync_capture_fmt(struct fimc_ctx *ctx)
|
|
{
|
|
struct fimc_frame *frame = &ctx->s_frame;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
struct v4l2_mbus_framefmt *fmt = &fimc->vid_cap.fmt;
|
|
int ret;
|
|
|
|
fmt->width = ctx->d_frame.o_width;
|
|
fmt->height = ctx->d_frame.o_height;
|
|
|
|
ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_mbus_fmt, fmt);
|
|
if (ret == -ENOIOCTLCMD) {
|
|
err("s_mbus_fmt failed");
|
|
return ret;
|
|
}
|
|
dbg("w: %d, h: %d, code= %d", fmt->width, fmt->height, fmt->code);
|
|
|
|
frame->fmt = find_mbus_format(fmt, FMT_FLAGS_CAM);
|
|
if (!frame->fmt) {
|
|
err("fimc source format not found\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
frame->f_width = fmt->width;
|
|
frame->f_height = fmt->height;
|
|
frame->width = fmt->width;
|
|
frame->height = fmt->height;
|
|
frame->o_width = fmt->width;
|
|
frame->o_height = fmt->height;
|
|
frame->offs_h = 0;
|
|
frame->offs_v = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
struct fimc_frame *frame;
|
|
struct v4l2_pix_format_mplane *pix;
|
|
int ret;
|
|
int i;
|
|
|
|
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
|
|
return -EINVAL;
|
|
|
|
ret = fimc_vidioc_try_fmt_mplane(file, priv, f);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (vb2_is_streaming(&fimc->vid_cap.vbq) || fimc_capture_active(fimc))
|
|
return -EBUSY;
|
|
|
|
frame = &ctx->d_frame;
|
|
|
|
pix = &f->fmt.pix_mp;
|
|
frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
|
|
if (!frame->fmt) {
|
|
err("fimc target format not found\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < frame->fmt->colplanes; i++)
|
|
frame->payload[i] = pix->plane_fmt[i].bytesperline * pix->height;
|
|
|
|
/* Output DMA frame pixel size and offsets. */
|
|
frame->f_width = pix->plane_fmt[0].bytesperline * 8
|
|
/ frame->fmt->depth[0];
|
|
frame->f_height = pix->height;
|
|
frame->width = pix->width;
|
|
frame->height = pix->height;
|
|
frame->o_width = pix->width;
|
|
frame->o_height = pix->height;
|
|
frame->offs_h = 0;
|
|
frame->offs_v = 0;
|
|
|
|
ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
|
|
|
|
ret = sync_capture_fmt(ctx);
|
|
return ret;
|
|
}
|
|
|
|
static int fimc_cap_enum_input(struct file *file, void *priv,
|
|
struct v4l2_input *i)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct s5p_platform_fimc *pldata = ctx->fimc_dev->pdata;
|
|
struct s5p_fimc_isp_info *isp_info;
|
|
|
|
if (i->index >= FIMC_MAX_CAMIF_CLIENTS)
|
|
return -EINVAL;
|
|
|
|
isp_info = pldata->isp_info[i->index];
|
|
if (isp_info == NULL)
|
|
return -EINVAL;
|
|
|
|
i->type = V4L2_INPUT_TYPE_CAMERA;
|
|
strncpy(i->name, isp_info->board_info->type, 32);
|
|
return 0;
|
|
}
|
|
|
|
static int fimc_cap_s_input(struct file *file, void *priv,
|
|
unsigned int i)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
struct s5p_platform_fimc *pdata = fimc->pdata;
|
|
|
|
if (fimc_capture_active(ctx->fimc_dev))
|
|
return -EBUSY;
|
|
|
|
if (i >= FIMC_MAX_CAMIF_CLIENTS || !pdata->isp_info[i])
|
|
return -EINVAL;
|
|
|
|
|
|
if (fimc->vid_cap.sd) {
|
|
int ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
|
|
if (ret)
|
|
err("s_power failed: %d", ret);
|
|
|
|
clk_disable(fimc->clock[CLK_CAM]);
|
|
}
|
|
|
|
/* Release the attached sensor subdevice. */
|
|
fimc_subdev_unregister(fimc);
|
|
|
|
return fimc_isp_subdev_init(fimc, i);
|
|
}
|
|
|
|
static int fimc_cap_g_input(struct file *file, void *priv,
|
|
unsigned int *i)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
|
|
|
|
*i = cap->input_index;
|
|
return 0;
|
|
}
|
|
|
|
static int fimc_cap_streamon(struct file *file, void *priv,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
|
|
if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
|
|
return -EBUSY;
|
|
|
|
if (!(ctx->state & FIMC_DST_FMT)) {
|
|
v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return vb2_streamon(&fimc->vid_cap.vbq, type);
|
|
}
|
|
|
|
static int fimc_cap_streamoff(struct file *file, void *priv,
|
|
enum v4l2_buf_type type)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
|
|
return vb2_streamoff(&fimc->vid_cap.vbq, type);
|
|
}
|
|
|
|
static int fimc_cap_reqbufs(struct file *file, void *priv,
|
|
struct v4l2_requestbuffers *reqbufs)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
|
|
int ret;
|
|
|
|
|
|
ret = vb2_reqbufs(&cap->vbq, reqbufs);
|
|
if (!ret)
|
|
cap->reqbufs_count = reqbufs->count;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fimc_cap_querybuf(struct file *file, void *priv,
|
|
struct v4l2_buffer *buf)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
|
|
|
|
return vb2_querybuf(&cap->vbq, buf);
|
|
}
|
|
|
|
static int fimc_cap_qbuf(struct file *file, void *priv,
|
|
struct v4l2_buffer *buf)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
|
|
return vb2_qbuf(&cap->vbq, buf);
|
|
}
|
|
|
|
static int fimc_cap_dqbuf(struct file *file, void *priv,
|
|
struct v4l2_buffer *buf)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
return vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
|
|
file->f_flags & O_NONBLOCK);
|
|
}
|
|
|
|
static int fimc_cap_s_ctrl(struct file *file, void *priv,
|
|
struct v4l2_control *ctrl)
|
|
{
|
|
struct fimc_ctx *ctx = priv;
|
|
int ret = -EINVAL;
|
|
|
|
/* Allow any controls but 90/270 rotation while streaming */
|
|
if (!fimc_capture_active(ctx->fimc_dev) ||
|
|
ctrl->id != V4L2_CID_ROTATE ||
|
|
(ctrl->value != 90 && ctrl->value != 270)) {
|
|
ret = check_ctrl_val(ctx, ctrl);
|
|
if (!ret) {
|
|
ret = fimc_s_ctrl(ctx, ctrl);
|
|
if (!ret)
|
|
ctx->state |= FIMC_PARAMS;
|
|
}
|
|
}
|
|
if (ret == -EINVAL)
|
|
ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
|
|
core, s_ctrl, ctrl);
|
|
return ret;
|
|
}
|
|
|
|
static int fimc_cap_cropcap(struct file *file, void *fh,
|
|
struct v4l2_cropcap *cr)
|
|
{
|
|
struct fimc_frame *f;
|
|
struct fimc_ctx *ctx = fh;
|
|
|
|
if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
|
|
return -EINVAL;
|
|
|
|
f = &ctx->s_frame;
|
|
|
|
cr->bounds.left = 0;
|
|
cr->bounds.top = 0;
|
|
cr->bounds.width = f->o_width;
|
|
cr->bounds.height = f->o_height;
|
|
cr->defrect = cr->bounds;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
|
|
{
|
|
struct fimc_frame *f;
|
|
struct fimc_ctx *ctx = file->private_data;
|
|
|
|
f = &ctx->s_frame;
|
|
|
|
cr->c.left = f->offs_h;
|
|
cr->c.top = f->offs_v;
|
|
cr->c.width = f->width;
|
|
cr->c.height = f->height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fimc_cap_s_crop(struct file *file, void *fh,
|
|
struct v4l2_crop *cr)
|
|
{
|
|
struct fimc_frame *f;
|
|
struct fimc_ctx *ctx = file->private_data;
|
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
|
int ret = -EINVAL;
|
|
|
|
if (fimc_capture_active(fimc))
|
|
return -EBUSY;
|
|
|
|
ret = fimc_try_crop(ctx, cr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!(ctx->state & FIMC_DST_FMT)) {
|
|
v4l2_err(&fimc->vid_cap.v4l2_dev,
|
|
"Capture color format not set\n");
|
|
return -EINVAL; /* TODO: make sure this is the right value */
|
|
}
|
|
|
|
f = &ctx->s_frame;
|
|
/* Check for the pixel scaling ratio when cropping input image. */
|
|
ret = fimc_check_scaler_ratio(cr->c.width, cr->c.height,
|
|
ctx->d_frame.width, ctx->d_frame.height,
|
|
ctx->rotation);
|
|
if (ret) {
|
|
v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range");
|
|
return ret;
|
|
}
|
|
|
|
f->offs_h = cr->c.left;
|
|
f->offs_v = cr->c.top;
|
|
f->width = cr->c.width;
|
|
f->height = cr->c.height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = {
|
|
.vidioc_querycap = fimc_vidioc_querycap_capture,
|
|
|
|
.vidioc_enum_fmt_vid_cap_mplane = fimc_vidioc_enum_fmt_mplane,
|
|
.vidioc_try_fmt_vid_cap_mplane = fimc_vidioc_try_fmt_mplane,
|
|
.vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane,
|
|
.vidioc_g_fmt_vid_cap_mplane = fimc_vidioc_g_fmt_mplane,
|
|
|
|
.vidioc_reqbufs = fimc_cap_reqbufs,
|
|
.vidioc_querybuf = fimc_cap_querybuf,
|
|
|
|
.vidioc_qbuf = fimc_cap_qbuf,
|
|
.vidioc_dqbuf = fimc_cap_dqbuf,
|
|
|
|
.vidioc_streamon = fimc_cap_streamon,
|
|
.vidioc_streamoff = fimc_cap_streamoff,
|
|
|
|
.vidioc_queryctrl = fimc_vidioc_queryctrl,
|
|
.vidioc_g_ctrl = fimc_vidioc_g_ctrl,
|
|
.vidioc_s_ctrl = fimc_cap_s_ctrl,
|
|
|
|
.vidioc_g_crop = fimc_cap_g_crop,
|
|
.vidioc_s_crop = fimc_cap_s_crop,
|
|
.vidioc_cropcap = fimc_cap_cropcap,
|
|
|
|
.vidioc_enum_input = fimc_cap_enum_input,
|
|
.vidioc_s_input = fimc_cap_s_input,
|
|
.vidioc_g_input = fimc_cap_g_input,
|
|
};
|
|
|
|
/* fimc->lock must be already initialized */
|
|
int fimc_register_capture_device(struct fimc_dev *fimc)
|
|
{
|
|
struct v4l2_device *v4l2_dev = &fimc->vid_cap.v4l2_dev;
|
|
struct video_device *vfd;
|
|
struct fimc_vid_cap *vid_cap;
|
|
struct fimc_ctx *ctx;
|
|
struct v4l2_format f;
|
|
struct fimc_frame *fr;
|
|
struct vb2_queue *q;
|
|
int ret;
|
|
|
|
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
|
|
if (!ctx)
|
|
return -ENOMEM;
|
|
|
|
ctx->fimc_dev = fimc;
|
|
ctx->in_path = FIMC_CAMERA;
|
|
ctx->out_path = FIMC_DMA;
|
|
ctx->state = FIMC_CTX_CAP;
|
|
|
|
/* Default format of the output frames */
|
|
f.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
|
|
fr = &ctx->d_frame;
|
|
fr->fmt = find_format(&f, FMT_FLAGS_M2M);
|
|
fr->width = fr->f_width = fr->o_width = 640;
|
|
fr->height = fr->f_height = fr->o_height = 480;
|
|
|
|
if (!v4l2_dev->name[0])
|
|
snprintf(v4l2_dev->name, sizeof(v4l2_dev->name),
|
|
"%s.capture", dev_name(&fimc->pdev->dev));
|
|
|
|
ret = v4l2_device_register(NULL, v4l2_dev);
|
|
if (ret)
|
|
goto err_info;
|
|
|
|
vfd = video_device_alloc();
|
|
if (!vfd) {
|
|
v4l2_err(v4l2_dev, "Failed to allocate video device\n");
|
|
goto err_v4l2_reg;
|
|
}
|
|
|
|
snprintf(vfd->name, sizeof(vfd->name), "%s:cap",
|
|
dev_name(&fimc->pdev->dev));
|
|
|
|
vfd->fops = &fimc_capture_fops;
|
|
vfd->ioctl_ops = &fimc_capture_ioctl_ops;
|
|
vfd->minor = -1;
|
|
vfd->release = video_device_release;
|
|
vfd->lock = &fimc->lock;
|
|
video_set_drvdata(vfd, fimc);
|
|
|
|
vid_cap = &fimc->vid_cap;
|
|
vid_cap->vfd = vfd;
|
|
vid_cap->active_buf_cnt = 0;
|
|
vid_cap->reqbufs_count = 0;
|
|
vid_cap->refcnt = 0;
|
|
/* Default color format for image sensor */
|
|
vid_cap->fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
|
|
|
|
INIT_LIST_HEAD(&vid_cap->pending_buf_q);
|
|
INIT_LIST_HEAD(&vid_cap->active_buf_q);
|
|
spin_lock_init(&ctx->slock);
|
|
vid_cap->ctx = ctx;
|
|
|
|
q = &fimc->vid_cap.vbq;
|
|
memset(q, 0, sizeof(*q));
|
|
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
|
|
q->io_modes = VB2_MMAP | VB2_USERPTR;
|
|
q->drv_priv = fimc->vid_cap.ctx;
|
|
q->ops = &fimc_capture_qops;
|
|
q->mem_ops = &vb2_dma_contig_memops;
|
|
q->buf_struct_size = sizeof(struct fimc_vid_buffer);
|
|
|
|
vb2_queue_init(q);
|
|
|
|
ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
|
|
if (ret) {
|
|
v4l2_err(v4l2_dev, "Failed to register video device\n");
|
|
goto err_vd_reg;
|
|
}
|
|
|
|
v4l2_info(v4l2_dev,
|
|
"FIMC capture driver registered as /dev/video%d\n",
|
|
vfd->num);
|
|
|
|
return 0;
|
|
|
|
err_vd_reg:
|
|
video_device_release(vfd);
|
|
err_v4l2_reg:
|
|
v4l2_device_unregister(v4l2_dev);
|
|
err_info:
|
|
dev_err(&fimc->pdev->dev, "failed to install\n");
|
|
return ret;
|
|
}
|
|
|
|
void fimc_unregister_capture_device(struct fimc_dev *fimc)
|
|
{
|
|
struct fimc_vid_cap *capture = &fimc->vid_cap;
|
|
|
|
if (capture->vfd)
|
|
video_unregister_device(capture->vfd);
|
|
|
|
kfree(capture->ctx);
|
|
}
|