// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2009 Texas Instruments Inc
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* Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
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*
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* TODO : add support for VBI & HBI data service
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* add static buffer allocation
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*/
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/of_graph.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-ioctl.h>
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#include <media/i2c/tvp514x.h>
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#include <media/v4l2-mediabus.h>
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#include <linux/videodev2.h>
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#include "vpif.h"
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#include "vpif_capture.h"
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MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(VPIF_CAPTURE_VERSION);
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#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
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#define vpif_dbg(level, debug, fmt, arg...) \
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v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
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static int debug = 1;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level 0-1");
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#define VPIF_DRIVER_NAME "vpif_capture"
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MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
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/* global variables */
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static struct vpif_device vpif_obj = { {NULL} };
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static struct device *vpif_dev;
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static void vpif_calculate_offsets(struct channel_obj *ch);
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static void vpif_config_addr(struct channel_obj *ch, int muxmode);
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static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
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/* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
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static int ycmux_mode;
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static inline
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struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
|
{
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return container_of(vb, struct vpif_cap_buffer, vb);
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}
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/**
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* vpif_buffer_prepare : callback function for buffer prepare
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* @vb: ptr to vb2_buffer
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*
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* This is the callback function for buffer prepare when vb2_qbuf()
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* function is called. The buffer is prepared and user space virtual address
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* or user address is converted into physical address
|
*/
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static int vpif_buffer_prepare(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct vb2_queue *q = vb->vb2_queue;
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struct channel_obj *ch = vb2_get_drv_priv(q);
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struct common_obj *common;
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unsigned long addr;
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vpif_dbg(2, debug, "vpif_buffer_prepare\n");
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common = &ch->common[VPIF_VIDEO_INDEX];
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vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
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if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
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return -EINVAL;
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vbuf->field = common->fmt.fmt.pix.field;
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addr = vb2_dma_contig_plane_dma_addr(vb, 0);
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if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
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!IS_ALIGNED((addr + common->ybtm_off), 8) ||
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!IS_ALIGNED((addr + common->ctop_off), 8) ||
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!IS_ALIGNED((addr + common->cbtm_off), 8)) {
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vpif_dbg(1, debug, "offset is not aligned\n");
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return -EINVAL;
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}
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return 0;
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}
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/**
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* vpif_buffer_queue_setup : Callback function for buffer setup.
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* @vq: vb2_queue ptr
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* @nbuffers: ptr to number of buffers requested by application
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* @nplanes:: contains number of distinct video planes needed to hold a frame
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* @sizes: contains the size (in bytes) of each plane.
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* @alloc_devs: ptr to allocation context
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*
|
* This callback function is called when reqbuf() is called to adjust
|
* the buffer count and buffer size
|
*/
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static int vpif_buffer_queue_setup(struct vb2_queue *vq,
|
unsigned int *nbuffers, unsigned int *nplanes,
|
unsigned int sizes[], struct device *alloc_devs[])
|
{
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struct channel_obj *ch = vb2_get_drv_priv(vq);
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struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
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unsigned size = common->fmt.fmt.pix.sizeimage;
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vpif_dbg(2, debug, "vpif_buffer_setup\n");
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if (*nplanes) {
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if (sizes[0] < size)
|
return -EINVAL;
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size = sizes[0];
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}
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if (vq->num_buffers + *nbuffers < 3)
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*nbuffers = 3 - vq->num_buffers;
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*nplanes = 1;
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sizes[0] = size;
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/* Calculate the offset for Y and C data in the buffer */
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vpif_calculate_offsets(ch);
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return 0;
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}
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/**
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* vpif_buffer_queue : Callback function to add buffer to DMA queue
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* @vb: ptr to vb2_buffer
|
*/
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static void vpif_buffer_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
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struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
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struct common_obj *common;
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unsigned long flags;
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common = &ch->common[VPIF_VIDEO_INDEX];
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vpif_dbg(2, debug, "vpif_buffer_queue\n");
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spin_lock_irqsave(&common->irqlock, flags);
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/* add the buffer to the DMA queue */
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list_add_tail(&buf->list, &common->dma_queue);
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spin_unlock_irqrestore(&common->irqlock, flags);
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}
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/**
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* vpif_start_streaming : Starts the DMA engine for streaming
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* @vq: ptr to vb2_buffer
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* @count: number of buffers
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*/
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static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
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{
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struct vpif_capture_config *vpif_config_data =
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vpif_dev->platform_data;
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struct channel_obj *ch = vb2_get_drv_priv(vq);
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struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
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struct vpif_params *vpif = &ch->vpifparams;
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struct vpif_cap_buffer *buf, *tmp;
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unsigned long addr, flags;
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int ret;
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/* Initialize field_id */
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ch->field_id = 0;
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/* configure 1 or 2 channel mode */
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if (vpif_config_data->setup_input_channel_mode) {
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ret = vpif_config_data->
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setup_input_channel_mode(vpif->std_info.ycmux_mode);
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if (ret < 0) {
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vpif_dbg(1, debug, "can't set vpif channel mode\n");
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goto err;
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}
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}
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ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
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if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
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vpif_dbg(1, debug, "stream on failed in subdev\n");
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goto err;
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}
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/* Call vpif_set_params function to set the parameters and addresses */
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ret = vpif_set_video_params(vpif, ch->channel_id);
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if (ret < 0) {
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vpif_dbg(1, debug, "can't set video params\n");
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goto err;
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}
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ycmux_mode = ret;
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vpif_config_addr(ch, ret);
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/* Get the next frame from the buffer queue */
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spin_lock_irqsave(&common->irqlock, flags);
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common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
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struct vpif_cap_buffer, list);
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/* Remove buffer from the buffer queue */
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list_del(&common->cur_frm->list);
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spin_unlock_irqrestore(&common->irqlock, flags);
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addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
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common->set_addr(addr + common->ytop_off,
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addr + common->ybtm_off,
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addr + common->ctop_off,
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addr + common->cbtm_off);
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/**
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* Set interrupt for both the fields in VPIF Register enable channel in
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* VPIF register
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*/
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channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
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if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
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channel0_intr_assert();
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channel0_intr_enable(1);
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enable_channel0(1);
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}
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if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
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ycmux_mode == 2) {
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channel1_intr_assert();
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channel1_intr_enable(1);
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enable_channel1(1);
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}
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return 0;
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err:
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spin_lock_irqsave(&common->irqlock, flags);
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list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
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list_del(&buf->list);
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vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
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}
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spin_unlock_irqrestore(&common->irqlock, flags);
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return ret;
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}
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/**
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* vpif_stop_streaming : Stop the DMA engine
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* @vq: ptr to vb2_queue
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*
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* This callback stops the DMA engine and any remaining buffers
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* in the DMA queue are released.
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*/
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static void vpif_stop_streaming(struct vb2_queue *vq)
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{
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struct channel_obj *ch = vb2_get_drv_priv(vq);
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struct common_obj *common;
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unsigned long flags;
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int ret;
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common = &ch->common[VPIF_VIDEO_INDEX];
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/* Disable channel as per its device type and channel id */
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if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
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enable_channel0(0);
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channel0_intr_enable(0);
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}
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if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
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ycmux_mode == 2) {
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enable_channel1(0);
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channel1_intr_enable(0);
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}
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ycmux_mode = 0;
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ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
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if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
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vpif_dbg(1, debug, "stream off failed in subdev\n");
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/* release all active buffers */
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if (common->cur_frm == common->next_frm) {
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vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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} else {
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if (common->cur_frm)
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vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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if (common->next_frm)
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vb2_buffer_done(&common->next_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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}
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spin_lock_irqsave(&common->irqlock, flags);
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while (!list_empty(&common->dma_queue)) {
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common->next_frm = list_entry(common->dma_queue.next,
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struct vpif_cap_buffer, list);
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list_del(&common->next_frm->list);
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vb2_buffer_done(&common->next_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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}
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spin_unlock_irqrestore(&common->irqlock, flags);
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}
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static const struct vb2_ops video_qops = {
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.queue_setup = vpif_buffer_queue_setup,
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.buf_prepare = vpif_buffer_prepare,
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.start_streaming = vpif_start_streaming,
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.stop_streaming = vpif_stop_streaming,
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.buf_queue = vpif_buffer_queue,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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};
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/**
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* vpif_process_buffer_complete: process a completed buffer
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* @common: ptr to common channel object
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*
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* This function time stamp the buffer and mark it as DONE. It also
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* wake up any process waiting on the QUEUE and set the next buffer
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* as current
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*/
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static void vpif_process_buffer_complete(struct common_obj *common)
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{
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common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
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vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
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/* Make curFrm pointing to nextFrm */
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common->cur_frm = common->next_frm;
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}
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/**
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* vpif_schedule_next_buffer: set next buffer address for capture
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* @common : ptr to common channel object
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*
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* This function will get next buffer from the dma queue and
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* set the buffer address in the vpif register for capture.
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* the buffer is marked active
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*/
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static void vpif_schedule_next_buffer(struct common_obj *common)
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{
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unsigned long addr = 0;
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spin_lock(&common->irqlock);
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common->next_frm = list_entry(common->dma_queue.next,
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struct vpif_cap_buffer, list);
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/* Remove that buffer from the buffer queue */
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list_del(&common->next_frm->list);
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spin_unlock(&common->irqlock);
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addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
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/* Set top and bottom field addresses in VPIF registers */
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common->set_addr(addr + common->ytop_off,
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addr + common->ybtm_off,
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addr + common->ctop_off,
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addr + common->cbtm_off);
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}
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/**
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* vpif_channel_isr : ISR handler for vpif capture
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* @irq: irq number
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* @dev_id: dev_id ptr
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*
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* It changes status of the captured buffer, takes next buffer from the queue
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* and sets its address in VPIF registers
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*/
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static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
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{
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struct vpif_device *dev = &vpif_obj;
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struct common_obj *common;
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struct channel_obj *ch;
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int channel_id;
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int fid = -1, i;
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channel_id = *(int *)(dev_id);
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if (!vpif_intr_status(channel_id))
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return IRQ_NONE;
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ch = dev->dev[channel_id];
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for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
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common = &ch->common[i];
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/* skip If streaming is not started in this channel */
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/* Check the field format */
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if (1 == ch->vpifparams.std_info.frm_fmt ||
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common->fmt.fmt.pix.field == V4L2_FIELD_NONE) {
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/* Progressive mode */
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spin_lock(&common->irqlock);
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if (list_empty(&common->dma_queue)) {
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spin_unlock(&common->irqlock);
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continue;
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}
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spin_unlock(&common->irqlock);
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if (!channel_first_int[i][channel_id])
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vpif_process_buffer_complete(common);
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channel_first_int[i][channel_id] = 0;
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vpif_schedule_next_buffer(common);
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|
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channel_first_int[i][channel_id] = 0;
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} else {
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/**
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* Interlaced mode. If it is first interrupt, ignore
|
* it
|
*/
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if (channel_first_int[i][channel_id]) {
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channel_first_int[i][channel_id] = 0;
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continue;
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}
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if (0 == i) {
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ch->field_id ^= 1;
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/* Get field id from VPIF registers */
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fid = vpif_channel_getfid(ch->channel_id);
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if (fid != ch->field_id) {
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/**
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* If field id does not match stored
|
* field id, make them in sync
|
*/
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if (0 == fid)
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ch->field_id = fid;
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return IRQ_HANDLED;
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}
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}
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/* device field id and local field id are in sync */
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if (0 == fid) {
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/* this is even field */
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if (common->cur_frm == common->next_frm)
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continue;
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/* mark the current buffer as done */
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vpif_process_buffer_complete(common);
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} else if (1 == fid) {
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/* odd field */
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spin_lock(&common->irqlock);
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if (list_empty(&common->dma_queue) ||
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(common->cur_frm != common->next_frm)) {
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spin_unlock(&common->irqlock);
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continue;
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}
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spin_unlock(&common->irqlock);
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vpif_schedule_next_buffer(common);
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}
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}
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}
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return IRQ_HANDLED;
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}
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/**
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* vpif_update_std_info() - update standard related info
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* @ch: ptr to channel object
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*
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* For a given standard selected by application, update values
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* in the device data structures
|
*/
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static int vpif_update_std_info(struct channel_obj *ch)
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{
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struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
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struct vpif_params *vpifparams = &ch->vpifparams;
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const struct vpif_channel_config_params *config;
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struct vpif_channel_config_params *std_info = &vpifparams->std_info;
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struct video_obj *vid_ch = &ch->video;
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int index;
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struct v4l2_pix_format *pixfmt = &common->fmt.fmt.pix;
|
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vpif_dbg(2, debug, "vpif_update_std_info\n");
|
|
/*
|
* if called after try_fmt or g_fmt, there will already be a size
|
* so use that by default.
|
*/
|
if (pixfmt->width && pixfmt->height) {
|
if (pixfmt->field == V4L2_FIELD_ANY ||
|
pixfmt->field == V4L2_FIELD_NONE)
|
pixfmt->field = V4L2_FIELD_NONE;
|
|
vpifparams->iface.if_type = VPIF_IF_BT656;
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10 ||
|
pixfmt->pixelformat == V4L2_PIX_FMT_SBGGR8)
|
vpifparams->iface.if_type = VPIF_IF_RAW_BAYER;
|
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10)
|
vpifparams->params.data_sz = 1; /* 10 bits/pixel. */
|
|
/*
|
* For raw formats from camera sensors, we don't need
|
* the std_info from table lookup, so nothing else to do here.
|
*/
|
if (vpifparams->iface.if_type == VPIF_IF_RAW_BAYER) {
|
memset(std_info, 0, sizeof(struct vpif_channel_config_params));
|
vpifparams->std_info.capture_format = 1; /* CCD/raw mode */
|
return 0;
|
}
|
}
|
|
for (index = 0; index < vpif_ch_params_count; index++) {
|
config = &vpif_ch_params[index];
|
if (config->hd_sd == 0) {
|
vpif_dbg(2, debug, "SD format\n");
|
if (config->stdid & vid_ch->stdid) {
|
memcpy(std_info, config, sizeof(*config));
|
break;
|
}
|
} else {
|
vpif_dbg(2, debug, "HD format\n");
|
if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
|
sizeof(vid_ch->dv_timings))) {
|
memcpy(std_info, config, sizeof(*config));
|
break;
|
}
|
}
|
}
|
|
/* standard not found */
|
if (index == vpif_ch_params_count)
|
return -EINVAL;
|
|
common->fmt.fmt.pix.width = std_info->width;
|
common->width = std_info->width;
|
common->fmt.fmt.pix.height = std_info->height;
|
common->height = std_info->height;
|
common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
|
common->fmt.fmt.pix.bytesperline = std_info->width;
|
vpifparams->video_params.hpitch = std_info->width;
|
vpifparams->video_params.storage_mode = std_info->frm_fmt;
|
|
if (vid_ch->stdid)
|
common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
else
|
common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
|
|
if (ch->vpifparams.std_info.frm_fmt)
|
common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
|
else
|
common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
|
|
if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
|
common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
|
else
|
common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV16;
|
|
common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
return 0;
|
}
|
|
/**
|
* vpif_calculate_offsets : This function calculates buffers offsets
|
* @ch : ptr to channel object
|
*
|
* This function calculates buffer offsets for Y and C in the top and
|
* bottom field
|
*/
|
static void vpif_calculate_offsets(struct channel_obj *ch)
|
{
|
unsigned int hpitch, sizeimage;
|
struct video_obj *vid_ch = &(ch->video);
|
struct vpif_params *vpifparams = &ch->vpifparams;
|
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
|
enum v4l2_field field = common->fmt.fmt.pix.field;
|
|
vpif_dbg(2, debug, "vpif_calculate_offsets\n");
|
|
if (V4L2_FIELD_ANY == field) {
|
if (vpifparams->std_info.frm_fmt)
|
vid_ch->buf_field = V4L2_FIELD_NONE;
|
else
|
vid_ch->buf_field = V4L2_FIELD_INTERLACED;
|
} else
|
vid_ch->buf_field = common->fmt.fmt.pix.field;
|
|
sizeimage = common->fmt.fmt.pix.sizeimage;
|
|
hpitch = common->fmt.fmt.pix.bytesperline;
|
|
if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
|
(V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
|
/* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
|
common->ytop_off = 0;
|
common->ybtm_off = hpitch;
|
common->ctop_off = sizeimage / 2;
|
common->cbtm_off = sizeimage / 2 + hpitch;
|
} else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
|
/* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
|
common->ytop_off = 0;
|
common->ybtm_off = sizeimage / 4;
|
common->ctop_off = sizeimage / 2;
|
common->cbtm_off = common->ctop_off + sizeimage / 4;
|
} else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
|
/* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
|
common->ybtm_off = 0;
|
common->ytop_off = sizeimage / 4;
|
common->cbtm_off = sizeimage / 2;
|
common->ctop_off = common->cbtm_off + sizeimage / 4;
|
}
|
if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
|
(V4L2_FIELD_INTERLACED == vid_ch->buf_field))
|
vpifparams->video_params.storage_mode = 1;
|
else
|
vpifparams->video_params.storage_mode = 0;
|
|
if (1 == vpifparams->std_info.frm_fmt)
|
vpifparams->video_params.hpitch =
|
common->fmt.fmt.pix.bytesperline;
|
else {
|
if ((field == V4L2_FIELD_ANY)
|
|| (field == V4L2_FIELD_INTERLACED))
|
vpifparams->video_params.hpitch =
|
common->fmt.fmt.pix.bytesperline * 2;
|
else
|
vpifparams->video_params.hpitch =
|
common->fmt.fmt.pix.bytesperline;
|
}
|
|
ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
|
}
|
|
/**
|
* vpif_get_default_field() - Get default field type based on interface
|
* @iface: ptr to vpif interface
|
*/
|
static inline enum v4l2_field vpif_get_default_field(
|
struct vpif_interface *iface)
|
{
|
return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
|
V4L2_FIELD_INTERLACED;
|
}
|
|
/**
|
* vpif_config_addr() - function to configure buffer address in vpif
|
* @ch: channel ptr
|
* @muxmode: channel mux mode
|
*/
|
static void vpif_config_addr(struct channel_obj *ch, int muxmode)
|
{
|
struct common_obj *common;
|
|
vpif_dbg(2, debug, "vpif_config_addr\n");
|
|
common = &(ch->common[VPIF_VIDEO_INDEX]);
|
|
if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
|
common->set_addr = ch1_set_videobuf_addr;
|
else if (2 == muxmode)
|
common->set_addr = ch0_set_videobuf_addr_yc_nmux;
|
else
|
common->set_addr = ch0_set_videobuf_addr;
|
}
|
|
/**
|
* vpif_input_to_subdev() - Maps input to sub device
|
* @vpif_cfg: global config ptr
|
* @chan_cfg: channel config ptr
|
* @input_index: Given input index from application
|
*
|
* lookup the sub device information for a given input index.
|
* we report all the inputs to application. inputs table also
|
* has sub device name for the each input
|
*/
|
static int vpif_input_to_subdev(
|
struct vpif_capture_config *vpif_cfg,
|
struct vpif_capture_chan_config *chan_cfg,
|
int input_index)
|
{
|
struct vpif_subdev_info *subdev_info;
|
const char *subdev_name;
|
int i;
|
|
vpif_dbg(2, debug, "vpif_input_to_subdev\n");
|
|
if (!chan_cfg)
|
return -1;
|
if (input_index >= chan_cfg->input_count)
|
return -1;
|
subdev_name = chan_cfg->inputs[input_index].subdev_name;
|
if (!subdev_name)
|
return -1;
|
|
/* loop through the sub device list to get the sub device info */
|
for (i = 0; i < vpif_cfg->subdev_count; i++) {
|
subdev_info = &vpif_cfg->subdev_info[i];
|
if (subdev_info && !strcmp(subdev_info->name, subdev_name))
|
return i;
|
}
|
return -1;
|
}
|
|
/**
|
* vpif_set_input() - Select an input
|
* @vpif_cfg: global config ptr
|
* @ch: channel
|
* @index: Given input index from application
|
*
|
* Select the given input.
|
*/
|
static int vpif_set_input(
|
struct vpif_capture_config *vpif_cfg,
|
struct channel_obj *ch,
|
int index)
|
{
|
struct vpif_capture_chan_config *chan_cfg =
|
&vpif_cfg->chan_config[ch->channel_id];
|
struct vpif_subdev_info *subdev_info = NULL;
|
struct v4l2_subdev *sd = NULL;
|
u32 input = 0, output = 0;
|
int sd_index;
|
int ret;
|
|
sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
|
if (sd_index >= 0) {
|
sd = vpif_obj.sd[sd_index];
|
subdev_info = &vpif_cfg->subdev_info[sd_index];
|
} else {
|
/* no subdevice, no input to setup */
|
return 0;
|
}
|
|
/* first setup input path from sub device to vpif */
|
if (sd && vpif_cfg->setup_input_path) {
|
ret = vpif_cfg->setup_input_path(ch->channel_id,
|
subdev_info->name);
|
if (ret < 0) {
|
vpif_dbg(1, debug, "couldn't setup input path for the" \
|
" sub device %s, for input index %d\n",
|
subdev_info->name, index);
|
return ret;
|
}
|
}
|
|
if (sd) {
|
input = chan_cfg->inputs[index].input_route;
|
output = chan_cfg->inputs[index].output_route;
|
ret = v4l2_subdev_call(sd, video, s_routing,
|
input, output, 0);
|
if (ret < 0 && ret != -ENOIOCTLCMD) {
|
vpif_dbg(1, debug, "Failed to set input\n");
|
return ret;
|
}
|
}
|
ch->input_idx = index;
|
ch->sd = sd;
|
/* copy interface parameters to vpif */
|
ch->vpifparams.iface = chan_cfg->vpif_if;
|
|
/* update tvnorms from the sub device input info */
|
ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
|
return 0;
|
}
|
|
/**
|
* vpif_querystd() - querystd handler
|
* @file: file ptr
|
* @priv: file handle
|
* @std_id: ptr to std id
|
*
|
* This function is called to detect standard at the selected input
|
*/
|
static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
|
{
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
int ret;
|
|
vpif_dbg(2, debug, "vpif_querystd\n");
|
|
/* Call querystd function of decoder device */
|
ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
|
|
if (ret == -ENOIOCTLCMD || ret == -ENODEV)
|
return -ENODATA;
|
if (ret) {
|
vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
|
return ret;
|
}
|
|
return 0;
|
}
|
|
/**
|
* vpif_g_std() - get STD handler
|
* @file: file ptr
|
* @priv: file handle
|
* @std: ptr to std id
|
*/
|
static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct vpif_capture_chan_config *chan_cfg;
|
struct v4l2_input input;
|
|
vpif_dbg(2, debug, "vpif_g_std\n");
|
|
if (!config->chan_config[ch->channel_id].inputs)
|
return -ENODATA;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
input = chan_cfg->inputs[ch->input_idx].input;
|
if (input.capabilities != V4L2_IN_CAP_STD)
|
return -ENODATA;
|
|
*std = ch->video.stdid;
|
return 0;
|
}
|
|
/**
|
* vpif_s_std() - set STD handler
|
* @file: file ptr
|
* @priv: file handle
|
* @std_id: ptr to std id
|
*/
|
static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
|
struct vpif_capture_chan_config *chan_cfg;
|
struct v4l2_input input;
|
int ret;
|
|
vpif_dbg(2, debug, "vpif_s_std\n");
|
|
if (!config->chan_config[ch->channel_id].inputs)
|
return -ENODATA;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
input = chan_cfg->inputs[ch->input_idx].input;
|
if (input.capabilities != V4L2_IN_CAP_STD)
|
return -ENODATA;
|
|
if (vb2_is_busy(&common->buffer_queue))
|
return -EBUSY;
|
|
/* Call encoder subdevice function to set the standard */
|
ch->video.stdid = std_id;
|
memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
|
|
/* Get the information about the standard */
|
if (vpif_update_std_info(ch)) {
|
vpif_err("Error getting the standard info\n");
|
return -EINVAL;
|
}
|
|
/* set standard in the sub device */
|
ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
|
if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
|
vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
|
return ret;
|
}
|
return 0;
|
}
|
|
/**
|
* vpif_enum_input() - ENUMINPUT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @input: ptr to input structure
|
*/
|
static int vpif_enum_input(struct file *file, void *priv,
|
struct v4l2_input *input)
|
{
|
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct vpif_capture_chan_config *chan_cfg;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
|
if (input->index >= chan_cfg->input_count)
|
return -EINVAL;
|
|
memcpy(input, &chan_cfg->inputs[input->index].input,
|
sizeof(*input));
|
return 0;
|
}
|
|
/**
|
* vpif_g_input() - Get INPUT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @index: ptr to input index
|
*/
|
static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
|
{
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
|
*index = ch->input_idx;
|
return 0;
|
}
|
|
/**
|
* vpif_s_input() - Set INPUT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @index: input index
|
*/
|
static int vpif_s_input(struct file *file, void *priv, unsigned int index)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
|
struct vpif_capture_chan_config *chan_cfg;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
|
if (index >= chan_cfg->input_count)
|
return -EINVAL;
|
|
if (vb2_is_busy(&common->buffer_queue))
|
return -EBUSY;
|
|
return vpif_set_input(config, ch, index);
|
}
|
|
/**
|
* vpif_enum_fmt_vid_cap() - ENUM_FMT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @fmt: ptr to V4L2 format descriptor
|
*/
|
static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_fmtdesc *fmt)
|
{
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
|
if (fmt->index != 0) {
|
vpif_dbg(1, debug, "Invalid format index\n");
|
return -EINVAL;
|
}
|
|
/* Fill in the information about format */
|
if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
|
fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
|
else
|
fmt->pixelformat = V4L2_PIX_FMT_NV16;
|
return 0;
|
}
|
|
/**
|
* vpif_try_fmt_vid_cap() - TRY_FMT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @fmt: ptr to v4l2 format structure
|
*/
|
static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
|
struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
|
|
common->fmt = *fmt;
|
vpif_update_std_info(ch);
|
|
pixfmt->field = common->fmt.fmt.pix.field;
|
pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
|
pixfmt->bytesperline = common->fmt.fmt.pix.width;
|
pixfmt->width = common->fmt.fmt.pix.width;
|
pixfmt->height = common->fmt.fmt.pix.height;
|
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) {
|
pixfmt->bytesperline = common->fmt.fmt.pix.width * 2;
|
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
|
}
|
|
dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__,
|
pixfmt->width, pixfmt->height,
|
pixfmt->bytesperline, pixfmt->pixelformat,
|
pixfmt->field, pixfmt->sizeimage);
|
|
return 0;
|
}
|
|
|
/**
|
* vpif_g_fmt_vid_cap() - Set INPUT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @fmt: ptr to v4l2 format structure
|
*/
|
static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
|
struct v4l2_pix_format *pix_fmt = &fmt->fmt.pix;
|
struct v4l2_subdev_format format = {
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
};
|
struct v4l2_mbus_framefmt *mbus_fmt = &format.format;
|
int ret;
|
|
/* Check the validity of the buffer type */
|
if (common->fmt.type != fmt->type)
|
return -EINVAL;
|
|
/* By default, use currently set fmt */
|
*fmt = common->fmt;
|
|
/* If subdev has get_fmt, use that to override */
|
ret = v4l2_subdev_call(ch->sd, pad, get_fmt, NULL, &format);
|
if (!ret && mbus_fmt->code) {
|
v4l2_fill_pix_format(pix_fmt, mbus_fmt);
|
pix_fmt->bytesperline = pix_fmt->width;
|
if (mbus_fmt->code == MEDIA_BUS_FMT_SGRBG10_1X10) {
|
/* e.g. mt9v032 */
|
pix_fmt->pixelformat = V4L2_PIX_FMT_SGRBG10;
|
pix_fmt->bytesperline = pix_fmt->width * 2;
|
} else if (mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) {
|
/* e.g. tvp514x */
|
pix_fmt->pixelformat = V4L2_PIX_FMT_NV16;
|
pix_fmt->bytesperline = pix_fmt->width * 2;
|
} else {
|
dev_warn(vpif_dev, "%s: Unhandled media-bus format 0x%x\n",
|
__func__, mbus_fmt->code);
|
}
|
pix_fmt->sizeimage = pix_fmt->bytesperline * pix_fmt->height;
|
dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__,
|
pix_fmt->width, pix_fmt->height,
|
pix_fmt->bytesperline, pix_fmt->pixelformat,
|
mbus_fmt->code, pix_fmt->field, pix_fmt->sizeimage);
|
|
common->fmt = *fmt;
|
vpif_update_std_info(ch);
|
}
|
|
return 0;
|
}
|
|
/**
|
* vpif_s_fmt_vid_cap() - Set FMT handler
|
* @file: file ptr
|
* @priv: file handle
|
* @fmt: ptr to v4l2 format structure
|
*/
|
static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
|
int ret;
|
|
vpif_dbg(2, debug, "%s\n", __func__);
|
|
if (vb2_is_busy(&common->buffer_queue))
|
return -EBUSY;
|
|
ret = vpif_try_fmt_vid_cap(file, priv, fmt);
|
if (ret)
|
return ret;
|
|
/* store the format in the channel object */
|
common->fmt = *fmt;
|
return 0;
|
}
|
|
/**
|
* vpif_querycap() - QUERYCAP handler
|
* @file: file ptr
|
* @priv: file handle
|
* @cap: ptr to v4l2_capability structure
|
*/
|
static int vpif_querycap(struct file *file, void *priv,
|
struct v4l2_capability *cap)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
|
strscpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
|
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
|
dev_name(vpif_dev));
|
strscpy(cap->card, config->card_name, sizeof(cap->card));
|
|
return 0;
|
}
|
|
/**
|
* vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
|
* @file: file ptr
|
* @priv: file handle
|
* @timings: input timings
|
*/
|
static int
|
vpif_enum_dv_timings(struct file *file, void *priv,
|
struct v4l2_enum_dv_timings *timings)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct vpif_capture_chan_config *chan_cfg;
|
struct v4l2_input input;
|
int ret;
|
|
if (!config->chan_config[ch->channel_id].inputs)
|
return -ENODATA;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
input = chan_cfg->inputs[ch->input_idx].input;
|
if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
|
return -ENODATA;
|
|
timings->pad = 0;
|
|
ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
|
if (ret == -ENOIOCTLCMD || ret == -ENODEV)
|
return -EINVAL;
|
|
return ret;
|
}
|
|
/**
|
* vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
|
* @file: file ptr
|
* @priv: file handle
|
* @timings: input timings
|
*/
|
static int
|
vpif_query_dv_timings(struct file *file, void *priv,
|
struct v4l2_dv_timings *timings)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct vpif_capture_chan_config *chan_cfg;
|
struct v4l2_input input;
|
int ret;
|
|
if (!config->chan_config[ch->channel_id].inputs)
|
return -ENODATA;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
input = chan_cfg->inputs[ch->input_idx].input;
|
if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
|
return -ENODATA;
|
|
ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
|
if (ret == -ENOIOCTLCMD || ret == -ENODEV)
|
return -ENODATA;
|
|
return ret;
|
}
|
|
/**
|
* vpif_s_dv_timings() - S_DV_TIMINGS handler
|
* @file: file ptr
|
* @priv: file handle
|
* @timings: digital video timings
|
*/
|
static int vpif_s_dv_timings(struct file *file, void *priv,
|
struct v4l2_dv_timings *timings)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct vpif_params *vpifparams = &ch->vpifparams;
|
struct vpif_channel_config_params *std_info = &vpifparams->std_info;
|
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
|
struct video_obj *vid_ch = &ch->video;
|
struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
|
struct vpif_capture_chan_config *chan_cfg;
|
struct v4l2_input input;
|
int ret;
|
|
if (!config->chan_config[ch->channel_id].inputs)
|
return -ENODATA;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
input = chan_cfg->inputs[ch->input_idx].input;
|
if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
|
return -ENODATA;
|
|
if (timings->type != V4L2_DV_BT_656_1120) {
|
vpif_dbg(2, debug, "Timing type not defined\n");
|
return -EINVAL;
|
}
|
|
if (vb2_is_busy(&common->buffer_queue))
|
return -EBUSY;
|
|
/* Configure subdevice timings, if any */
|
ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
|
if (ret == -ENOIOCTLCMD || ret == -ENODEV)
|
ret = 0;
|
if (ret < 0) {
|
vpif_dbg(2, debug, "Error setting custom DV timings\n");
|
return ret;
|
}
|
|
if (!(timings->bt.width && timings->bt.height &&
|
(timings->bt.hbackporch ||
|
timings->bt.hfrontporch ||
|
timings->bt.hsync) &&
|
timings->bt.vfrontporch &&
|
(timings->bt.vbackporch ||
|
timings->bt.vsync))) {
|
vpif_dbg(2, debug, "Timings for width, height, horizontal back porch, horizontal sync, horizontal front porch, vertical back porch, vertical sync and vertical back porch must be defined\n");
|
return -EINVAL;
|
}
|
|
vid_ch->dv_timings = *timings;
|
|
/* Configure video port timings */
|
|
std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
|
std_info->sav2eav = bt->width;
|
|
std_info->l1 = 1;
|
std_info->l3 = bt->vsync + bt->vbackporch + 1;
|
|
std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
|
if (bt->interlaced) {
|
if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
|
std_info->l5 = std_info->vsize/2 -
|
(bt->vfrontporch - 1);
|
std_info->l7 = std_info->vsize/2 + 1;
|
std_info->l9 = std_info->l7 + bt->il_vsync +
|
bt->il_vbackporch + 1;
|
std_info->l11 = std_info->vsize -
|
(bt->il_vfrontporch - 1);
|
} else {
|
vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n");
|
return -EINVAL;
|
}
|
} else {
|
std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
|
}
|
strscpy(std_info->name, "Custom timings BT656/1120",
|
sizeof(std_info->name));
|
std_info->width = bt->width;
|
std_info->height = bt->height;
|
std_info->frm_fmt = bt->interlaced ? 0 : 1;
|
std_info->ycmux_mode = 0;
|
std_info->capture_format = 0;
|
std_info->vbi_supported = 0;
|
std_info->hd_sd = 1;
|
std_info->stdid = 0;
|
|
vid_ch->stdid = 0;
|
return 0;
|
}
|
|
/**
|
* vpif_g_dv_timings() - G_DV_TIMINGS handler
|
* @file: file ptr
|
* @priv: file handle
|
* @timings: digital video timings
|
*/
|
static int vpif_g_dv_timings(struct file *file, void *priv,
|
struct v4l2_dv_timings *timings)
|
{
|
struct vpif_capture_config *config = vpif_dev->platform_data;
|
struct video_device *vdev = video_devdata(file);
|
struct channel_obj *ch = video_get_drvdata(vdev);
|
struct video_obj *vid_ch = &ch->video;
|
struct vpif_capture_chan_config *chan_cfg;
|
struct v4l2_input input;
|
|
if (!config->chan_config[ch->channel_id].inputs)
|
return -ENODATA;
|
|
chan_cfg = &config->chan_config[ch->channel_id];
|
input = chan_cfg->inputs[ch->input_idx].input;
|
if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
|
return -ENODATA;
|
|
*timings = vid_ch->dv_timings;
|
|
return 0;
|
}
|
|
/*
|
* vpif_log_status() - Status information
|
* @file: file ptr
|
* @priv: file handle
|
*
|
* Returns zero.
|
*/
|
static int vpif_log_status(struct file *filep, void *priv)
|
{
|
/* status for sub devices */
|
v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
|
|
return 0;
|
}
|
|
/* vpif capture ioctl operations */
|
static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
|
.vidioc_querycap = vpif_querycap,
|
.vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
|
.vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
|
.vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
|
.vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
|
|
.vidioc_enum_input = vpif_enum_input,
|
.vidioc_s_input = vpif_s_input,
|
.vidioc_g_input = vpif_g_input,
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
.vidioc_streamon = vb2_ioctl_streamon,
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
.vidioc_querystd = vpif_querystd,
|
.vidioc_s_std = vpif_s_std,
|
.vidioc_g_std = vpif_g_std,
|
|
.vidioc_enum_dv_timings = vpif_enum_dv_timings,
|
.vidioc_query_dv_timings = vpif_query_dv_timings,
|
.vidioc_s_dv_timings = vpif_s_dv_timings,
|
.vidioc_g_dv_timings = vpif_g_dv_timings,
|
|
.vidioc_log_status = vpif_log_status,
|
};
|
|
/* vpif file operations */
|
static const struct v4l2_file_operations vpif_fops = {
|
.owner = THIS_MODULE,
|
.open = v4l2_fh_open,
|
.release = vb2_fop_release,
|
.unlocked_ioctl = video_ioctl2,
|
.mmap = vb2_fop_mmap,
|
.poll = vb2_fop_poll
|
};
|
|
/**
|
* initialize_vpif() - Initialize vpif data structures
|
*
|
* Allocate memory for data structures and initialize them
|
*/
|
static int initialize_vpif(void)
|
{
|
int err, i, j;
|
int free_channel_objects_index;
|
|
/* Allocate memory for six channel objects */
|
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
|
vpif_obj.dev[i] =
|
kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
|
/* If memory allocation fails, return error */
|
if (!vpif_obj.dev[i]) {
|
free_channel_objects_index = i;
|
err = -ENOMEM;
|
goto vpif_init_free_channel_objects;
|
}
|
}
|
return 0;
|
|
vpif_init_free_channel_objects:
|
for (j = 0; j < free_channel_objects_index; j++)
|
kfree(vpif_obj.dev[j]);
|
return err;
|
}
|
|
static inline void free_vpif_objs(void)
|
{
|
int i;
|
|
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
|
kfree(vpif_obj.dev[i]);
|
}
|
|
static int vpif_async_bound(struct v4l2_async_notifier *notifier,
|
struct v4l2_subdev *subdev,
|
struct v4l2_async_subdev *asd)
|
{
|
int i;
|
|
for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
|
struct v4l2_async_subdev *_asd = vpif_obj.config->asd[i];
|
const struct fwnode_handle *fwnode = _asd->match.fwnode;
|
|
if (fwnode == subdev->fwnode) {
|
vpif_obj.sd[i] = subdev;
|
vpif_obj.config->chan_config->inputs[i].subdev_name =
|
(char *)to_of_node(subdev->fwnode)->full_name;
|
vpif_dbg(2, debug,
|
"%s: setting input %d subdev_name = %s\n",
|
__func__, i,
|
vpif_obj.config->chan_config->inputs[i].subdev_name);
|
return 0;
|
}
|
}
|
|
for (i = 0; i < vpif_obj.config->subdev_count; i++)
|
if (!strcmp(vpif_obj.config->subdev_info[i].name,
|
subdev->name)) {
|
vpif_obj.sd[i] = subdev;
|
return 0;
|
}
|
|
return -EINVAL;
|
}
|
|
static int vpif_probe_complete(void)
|
{
|
struct common_obj *common;
|
struct video_device *vdev;
|
struct channel_obj *ch;
|
struct vb2_queue *q;
|
int j, err, k;
|
|
for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
|
ch = vpif_obj.dev[j];
|
ch->channel_id = j;
|
common = &(ch->common[VPIF_VIDEO_INDEX]);
|
spin_lock_init(&common->irqlock);
|
mutex_init(&common->lock);
|
|
/* select input 0 */
|
err = vpif_set_input(vpif_obj.config, ch, 0);
|
if (err)
|
goto probe_out;
|
|
/* set initial format */
|
ch->video.stdid = V4L2_STD_525_60;
|
memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
|
common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
vpif_update_std_info(ch);
|
|
/* Initialize vb2 queue */
|
q = &common->buffer_queue;
|
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
|
q->drv_priv = ch;
|
q->ops = &video_qops;
|
q->mem_ops = &vb2_dma_contig_memops;
|
q->buf_struct_size = sizeof(struct vpif_cap_buffer);
|
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
q->min_buffers_needed = 1;
|
q->lock = &common->lock;
|
q->dev = vpif_dev;
|
|
err = vb2_queue_init(q);
|
if (err) {
|
vpif_err("vpif_capture: vb2_queue_init() failed\n");
|
goto probe_out;
|
}
|
|
INIT_LIST_HEAD(&common->dma_queue);
|
|
/* Initialize the video_device structure */
|
vdev = &ch->video_dev;
|
strscpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
|
vdev->release = video_device_release_empty;
|
vdev->fops = &vpif_fops;
|
vdev->ioctl_ops = &vpif_ioctl_ops;
|
vdev->v4l2_dev = &vpif_obj.v4l2_dev;
|
vdev->vfl_dir = VFL_DIR_RX;
|
vdev->queue = q;
|
vdev->lock = &common->lock;
|
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
|
video_set_drvdata(&ch->video_dev, ch);
|
err = video_register_device(vdev,
|
VFL_TYPE_VIDEO, (j ? 1 : 0));
|
if (err)
|
goto probe_out;
|
}
|
|
v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
|
return 0;
|
|
probe_out:
|
for (k = 0; k < j; k++) {
|
/* Get the pointer to the channel object */
|
ch = vpif_obj.dev[k];
|
common = &ch->common[k];
|
/* Unregister video device */
|
video_unregister_device(&ch->video_dev);
|
}
|
|
return err;
|
}
|
|
static int vpif_async_complete(struct v4l2_async_notifier *notifier)
|
{
|
return vpif_probe_complete();
|
}
|
|
static const struct v4l2_async_notifier_operations vpif_async_ops = {
|
.bound = vpif_async_bound,
|
.complete = vpif_async_complete,
|
};
|
|
static struct vpif_capture_config *
|
vpif_capture_get_pdata(struct platform_device *pdev)
|
{
|
struct device_node *endpoint = NULL;
|
struct device_node *rem = NULL;
|
struct vpif_capture_config *pdata;
|
struct vpif_subdev_info *sdinfo;
|
struct vpif_capture_chan_config *chan;
|
unsigned int i;
|
|
v4l2_async_notifier_init(&vpif_obj.notifier);
|
|
/*
|
* DT boot: OF node from parent device contains
|
* video ports & endpoints data.
|
*/
|
if (pdev->dev.parent && pdev->dev.parent->of_node)
|
pdev->dev.of_node = pdev->dev.parent->of_node;
|
if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
|
return pdev->dev.platform_data;
|
|
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
if (!pdata)
|
return NULL;
|
pdata->subdev_info =
|
devm_kcalloc(&pdev->dev,
|
VPIF_CAPTURE_NUM_CHANNELS,
|
sizeof(*pdata->subdev_info),
|
GFP_KERNEL);
|
|
if (!pdata->subdev_info)
|
return NULL;
|
|
for (i = 0; i < VPIF_CAPTURE_NUM_CHANNELS; i++) {
|
struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
|
unsigned int flags;
|
int err;
|
|
endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
|
endpoint);
|
if (!endpoint)
|
break;
|
|
rem = of_graph_get_remote_port_parent(endpoint);
|
if (!rem) {
|
dev_dbg(&pdev->dev, "Remote device at %pOF not found\n",
|
endpoint);
|
goto done;
|
}
|
|
sdinfo = &pdata->subdev_info[i];
|
chan = &pdata->chan_config[i];
|
chan->inputs = devm_kcalloc(&pdev->dev,
|
VPIF_CAPTURE_NUM_CHANNELS,
|
sizeof(*chan->inputs),
|
GFP_KERNEL);
|
if (!chan->inputs)
|
goto err_cleanup;
|
|
chan->input_count++;
|
chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
|
chan->inputs[i].input.std = V4L2_STD_ALL;
|
chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
|
|
err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
|
&bus_cfg);
|
if (err) {
|
dev_err(&pdev->dev, "Could not parse the endpoint\n");
|
of_node_put(rem);
|
goto done;
|
}
|
|
dev_dbg(&pdev->dev, "Endpoint %pOF, bus_width = %d\n",
|
endpoint, bus_cfg.bus.parallel.bus_width);
|
|
flags = bus_cfg.bus.parallel.flags;
|
|
if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
|
chan->vpif_if.hd_pol = 1;
|
|
if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
|
chan->vpif_if.vd_pol = 1;
|
|
dev_dbg(&pdev->dev, "Remote device %pOF found\n", rem);
|
sdinfo->name = rem->full_name;
|
|
pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
|
&vpif_obj.notifier, of_fwnode_handle(rem),
|
sizeof(struct v4l2_async_subdev));
|
if (IS_ERR(pdata->asd[i]))
|
goto err_cleanup;
|
|
of_node_put(rem);
|
}
|
|
done:
|
of_node_put(endpoint);
|
pdata->asd_sizes[0] = i;
|
pdata->subdev_count = i;
|
pdata->card_name = "DA850/OMAP-L138 Video Capture";
|
|
return pdata;
|
|
err_cleanup:
|
of_node_put(rem);
|
of_node_put(endpoint);
|
v4l2_async_notifier_cleanup(&vpif_obj.notifier);
|
|
return NULL;
|
}
|
|
/**
|
* vpif_probe : This function probes the vpif capture driver
|
* @pdev: platform device pointer
|
*
|
* This creates device entries by register itself to the V4L2 driver and
|
* initializes fields of each channel objects
|
*/
|
static __init int vpif_probe(struct platform_device *pdev)
|
{
|
struct vpif_subdev_info *subdevdata;
|
struct i2c_adapter *i2c_adap;
|
struct resource *res;
|
int subdev_count;
|
int res_idx = 0;
|
int i, err;
|
|
pdev->dev.platform_data = vpif_capture_get_pdata(pdev);
|
if (!pdev->dev.platform_data) {
|
dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
|
return -EINVAL;
|
}
|
|
vpif_dev = &pdev->dev;
|
|
err = initialize_vpif();
|
if (err) {
|
v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
|
goto cleanup;
|
}
|
|
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
|
if (err) {
|
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
|
goto vpif_free;
|
}
|
|
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
|
err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
|
IRQF_SHARED, VPIF_DRIVER_NAME,
|
(void *)(&vpif_obj.dev[res_idx]->
|
channel_id));
|
if (err) {
|
err = -EINVAL;
|
goto vpif_unregister;
|
}
|
res_idx++;
|
}
|
|
vpif_obj.config = pdev->dev.platform_data;
|
|
subdev_count = vpif_obj.config->subdev_count;
|
vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
|
if (!vpif_obj.sd) {
|
err = -ENOMEM;
|
goto vpif_unregister;
|
}
|
|
if (!vpif_obj.config->asd_sizes[0]) {
|
int i2c_id = vpif_obj.config->i2c_adapter_id;
|
|
i2c_adap = i2c_get_adapter(i2c_id);
|
WARN_ON(!i2c_adap);
|
for (i = 0; i < subdev_count; i++) {
|
subdevdata = &vpif_obj.config->subdev_info[i];
|
vpif_obj.sd[i] =
|
v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
|
i2c_adap,
|
&subdevdata->
|
board_info,
|
NULL);
|
|
if (!vpif_obj.sd[i]) {
|
vpif_err("Error registering v4l2 subdevice\n");
|
err = -ENODEV;
|
goto probe_subdev_out;
|
}
|
v4l2_info(&vpif_obj.v4l2_dev,
|
"registered sub device %s\n",
|
subdevdata->name);
|
}
|
err = vpif_probe_complete();
|
if (err)
|
goto probe_subdev_out;
|
} else {
|
vpif_obj.notifier.ops = &vpif_async_ops;
|
err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
|
&vpif_obj.notifier);
|
if (err) {
|
vpif_err("Error registering async notifier\n");
|
err = -EINVAL;
|
goto probe_subdev_out;
|
}
|
}
|
|
return 0;
|
|
probe_subdev_out:
|
/* free sub devices memory */
|
kfree(vpif_obj.sd);
|
vpif_unregister:
|
v4l2_device_unregister(&vpif_obj.v4l2_dev);
|
vpif_free:
|
free_vpif_objs();
|
cleanup:
|
v4l2_async_notifier_cleanup(&vpif_obj.notifier);
|
|
return err;
|
}
|
|
/**
|
* vpif_remove() - driver remove handler
|
* @device: ptr to platform device structure
|
*
|
* The vidoe device is unregistered
|
*/
|
static int vpif_remove(struct platform_device *device)
|
{
|
struct channel_obj *ch;
|
int i;
|
|
v4l2_async_notifier_unregister(&vpif_obj.notifier);
|
v4l2_async_notifier_cleanup(&vpif_obj.notifier);
|
v4l2_device_unregister(&vpif_obj.v4l2_dev);
|
|
kfree(vpif_obj.sd);
|
/* un-register device */
|
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
|
/* Get the pointer to the channel object */
|
ch = vpif_obj.dev[i];
|
/* Unregister video device */
|
video_unregister_device(&ch->video_dev);
|
kfree(vpif_obj.dev[i]);
|
}
|
return 0;
|
}
|
|
#ifdef CONFIG_PM_SLEEP
|
/**
|
* vpif_suspend: vpif device suspend
|
* @dev: pointer to &struct device
|
*/
|
static int vpif_suspend(struct device *dev)
|
{
|
|
struct common_obj *common;
|
struct channel_obj *ch;
|
int i;
|
|
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
|
/* Get the pointer to the channel object */
|
ch = vpif_obj.dev[i];
|
common = &ch->common[VPIF_VIDEO_INDEX];
|
|
if (!vb2_start_streaming_called(&common->buffer_queue))
|
continue;
|
|
mutex_lock(&common->lock);
|
/* Disable channel */
|
if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
|
enable_channel0(0);
|
channel0_intr_enable(0);
|
}
|
if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
|
ycmux_mode == 2) {
|
enable_channel1(0);
|
channel1_intr_enable(0);
|
}
|
mutex_unlock(&common->lock);
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpif_resume: vpif device suspend
|
*/
|
static int vpif_resume(struct device *dev)
|
{
|
struct common_obj *common;
|
struct channel_obj *ch;
|
int i;
|
|
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
|
/* Get the pointer to the channel object */
|
ch = vpif_obj.dev[i];
|
common = &ch->common[VPIF_VIDEO_INDEX];
|
|
if (!vb2_start_streaming_called(&common->buffer_queue))
|
continue;
|
|
mutex_lock(&common->lock);
|
/* Enable channel */
|
if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
|
enable_channel0(1);
|
channel0_intr_enable(1);
|
}
|
if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
|
ycmux_mode == 2) {
|
enable_channel1(1);
|
channel1_intr_enable(1);
|
}
|
mutex_unlock(&common->lock);
|
}
|
|
return 0;
|
}
|
#endif
|
|
static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
|
|
static __refdata struct platform_driver vpif_driver = {
|
.driver = {
|
.name = VPIF_DRIVER_NAME,
|
.pm = &vpif_pm_ops,
|
},
|
.probe = vpif_probe,
|
.remove = vpif_remove,
|
};
|
|
module_platform_driver(vpif_driver);
|
