+++ /dev/null
-/*
- * Analog Devices video capture driver
- *
- * Copyright (c) 2011 Analog Devices Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/types.h>
-
-#include <media/v4l2-common.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/videobuf2-dma-contig.h>
-
-#include <asm/dma.h>
-
-#include <media/blackfin/bfin_capture.h>
-#include <media/blackfin/ppi.h>
-
-#define CAPTURE_DRV_NAME "bfin_capture"
-
-struct bcap_format {
- char *desc;
- u32 pixelformat;
- u32 mbus_code;
- int bpp; /* bits per pixel */
- int dlen; /* data length for ppi in bits */
-};
-
-struct bcap_buffer {
- struct vb2_v4l2_buffer vb;
- struct list_head list;
-};
-
-struct bcap_device {
- /* capture device instance */
- struct v4l2_device v4l2_dev;
- /* v4l2 control handler */
- struct v4l2_ctrl_handler ctrl_handler;
- /* device node data */
- struct video_device video_dev;
- /* sub device instance */
- struct v4l2_subdev *sd;
- /* capture config */
- struct bfin_capture_config *cfg;
- /* ppi interface */
- struct ppi_if *ppi;
- /* current input */
- unsigned int cur_input;
- /* current selected standard */
- v4l2_std_id std;
- /* current selected dv_timings */
- struct v4l2_dv_timings dv_timings;
- /* used to store pixel format */
- struct v4l2_pix_format fmt;
- /* bits per pixel*/
- int bpp;
- /* data length for ppi in bits */
- int dlen;
- /* used to store sensor supported format */
- struct bcap_format *sensor_formats;
- /* number of sensor formats array */
- int num_sensor_formats;
- /* pointing to current video buffer */
- struct bcap_buffer *cur_frm;
- /* buffer queue used in videobuf2 */
- struct vb2_queue buffer_queue;
- /* queue of filled frames */
- struct list_head dma_queue;
- /* used in videobuf2 callback */
- spinlock_t lock;
- /* used to access capture device */
- struct mutex mutex;
- /* used to wait ppi to complete one transfer */
- struct completion comp;
- /* prepare to stop */
- bool stop;
- /* vb2 buffer sequence counter */
- unsigned sequence;
-};
-
-static const struct bcap_format bcap_formats[] = {
- {
- .desc = "YCbCr 4:2:2 Interleaved UYVY",
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
- .bpp = 16,
- .dlen = 8,
- },
- {
- .desc = "YCbCr 4:2:2 Interleaved YUYV",
- .pixelformat = V4L2_PIX_FMT_YUYV,
- .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
- .bpp = 16,
- .dlen = 8,
- },
- {
- .desc = "YCbCr 4:2:2 Interleaved UYVY",
- .pixelformat = V4L2_PIX_FMT_UYVY,
- .mbus_code = MEDIA_BUS_FMT_UYVY8_1X16,
- .bpp = 16,
- .dlen = 16,
- },
- {
- .desc = "RGB 565",
- .pixelformat = V4L2_PIX_FMT_RGB565,
- .mbus_code = MEDIA_BUS_FMT_RGB565_2X8_LE,
- .bpp = 16,
- .dlen = 8,
- },
- {
- .desc = "RGB 444",
- .pixelformat = V4L2_PIX_FMT_RGB444,
- .mbus_code = MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE,
- .bpp = 16,
- .dlen = 8,
- },
-
-};
-#define BCAP_MAX_FMTS ARRAY_SIZE(bcap_formats)
-
-static irqreturn_t bcap_isr(int irq, void *dev_id);
-
-static struct bcap_buffer *to_bcap_vb(struct vb2_v4l2_buffer *vb)
-{
- return container_of(vb, struct bcap_buffer, vb);
-}
-
-static int bcap_init_sensor_formats(struct bcap_device *bcap_dev)
-{
- struct v4l2_subdev_mbus_code_enum code = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- };
- struct bcap_format *sf;
- unsigned int num_formats = 0;
- int i, j;
-
- while (!v4l2_subdev_call(bcap_dev->sd, pad,
- enum_mbus_code, NULL, &code)) {
- num_formats++;
- code.index++;
- }
- if (!num_formats)
- return -ENXIO;
-
- sf = kcalloc(num_formats, sizeof(*sf), GFP_KERNEL);
- if (!sf)
- return -ENOMEM;
-
- for (i = 0; i < num_formats; i++) {
- code.index = i;
- v4l2_subdev_call(bcap_dev->sd, pad,
- enum_mbus_code, NULL, &code);
- for (j = 0; j < BCAP_MAX_FMTS; j++)
- if (code.code == bcap_formats[j].mbus_code)
- break;
- if (j == BCAP_MAX_FMTS) {
- /* we don't allow this sensor working with our bridge */
- kfree(sf);
- return -EINVAL;
- }
- sf[i] = bcap_formats[j];
- }
- bcap_dev->sensor_formats = sf;
- bcap_dev->num_sensor_formats = num_formats;
- return 0;
-}
-
-static void bcap_free_sensor_formats(struct bcap_device *bcap_dev)
-{
- bcap_dev->num_sensor_formats = 0;
- kfree(bcap_dev->sensor_formats);
- bcap_dev->sensor_formats = NULL;
-}
-
-static int bcap_queue_setup(struct vb2_queue *vq,
- unsigned int *nbuffers, unsigned int *nplanes,
- unsigned int sizes[], struct device *alloc_devs[])
-{
- struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
-
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2;
-
- if (*nplanes)
- return sizes[0] < bcap_dev->fmt.sizeimage ? -EINVAL : 0;
-
- *nplanes = 1;
- sizes[0] = bcap_dev->fmt.sizeimage;
-
- return 0;
-}
-
-static int bcap_buffer_prepare(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue);
- unsigned long size = bcap_dev->fmt.sizeimage;
-
- if (vb2_plane_size(vb, 0) < size) {
- v4l2_err(&bcap_dev->v4l2_dev, "buffer too small (%lu < %lu)\n",
- vb2_plane_size(vb, 0), size);
- return -EINVAL;
- }
- vb2_set_plane_payload(vb, 0, size);
-
- vbuf->field = bcap_dev->fmt.field;
-
- return 0;
-}
-
-static void bcap_buffer_queue(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue);
- struct bcap_buffer *buf = to_bcap_vb(vbuf);
- unsigned long flags;
-
- spin_lock_irqsave(&bcap_dev->lock, flags);
- list_add_tail(&buf->list, &bcap_dev->dma_queue);
- spin_unlock_irqrestore(&bcap_dev->lock, flags);
-}
-
-static void bcap_buffer_cleanup(struct vb2_buffer *vb)
-{
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- struct bcap_device *bcap_dev = vb2_get_drv_priv(vb->vb2_queue);
- struct bcap_buffer *buf = to_bcap_vb(vbuf);
- unsigned long flags;
-
- spin_lock_irqsave(&bcap_dev->lock, flags);
- list_del_init(&buf->list);
- spin_unlock_irqrestore(&bcap_dev->lock, flags);
-}
-
-static int bcap_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
- struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
- struct ppi_if *ppi = bcap_dev->ppi;
- struct bcap_buffer *buf, *tmp;
- struct ppi_params params;
- dma_addr_t addr;
- int ret;
-
- /* enable streamon on the sub device */
- ret = v4l2_subdev_call(bcap_dev->sd, video, s_stream, 1);
- if (ret && (ret != -ENOIOCTLCMD)) {
- v4l2_err(&bcap_dev->v4l2_dev, "stream on failed in subdev\n");
- goto err;
- }
-
- /* set ppi params */
- params.width = bcap_dev->fmt.width;
- params.height = bcap_dev->fmt.height;
- params.bpp = bcap_dev->bpp;
- params.dlen = bcap_dev->dlen;
- params.ppi_control = bcap_dev->cfg->ppi_control;
- params.int_mask = bcap_dev->cfg->int_mask;
- if (bcap_dev->cfg->inputs[bcap_dev->cur_input].capabilities
- & V4L2_IN_CAP_DV_TIMINGS) {
- struct v4l2_bt_timings *bt = &bcap_dev->dv_timings.bt;
-
- params.hdelay = bt->hsync + bt->hbackporch;
- params.vdelay = bt->vsync + bt->vbackporch;
- params.line = V4L2_DV_BT_FRAME_WIDTH(bt);
- params.frame = V4L2_DV_BT_FRAME_HEIGHT(bt);
- } else if (bcap_dev->cfg->inputs[bcap_dev->cur_input].capabilities
- & V4L2_IN_CAP_STD) {
- params.hdelay = 0;
- params.vdelay = 0;
- if (bcap_dev->std & V4L2_STD_525_60) {
- params.line = 858;
- params.frame = 525;
- } else {
- params.line = 864;
- params.frame = 625;
- }
- } else {
- params.hdelay = 0;
- params.vdelay = 0;
- params.line = params.width + bcap_dev->cfg->blank_pixels;
- params.frame = params.height;
- }
- ret = ppi->ops->set_params(ppi, ¶ms);
- if (ret < 0) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Error in setting ppi params\n");
- goto err;
- }
-
- /* attach ppi DMA irq handler */
- ret = ppi->ops->attach_irq(ppi, bcap_isr);
- if (ret < 0) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Error in attaching interrupt handler\n");
- goto err;
- }
-
- bcap_dev->sequence = 0;
-
- reinit_completion(&bcap_dev->comp);
- bcap_dev->stop = false;
-
- /* get the next frame from the dma queue */
- bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
- struct bcap_buffer, list);
- /* remove buffer from the dma queue */
- list_del_init(&bcap_dev->cur_frm->list);
- addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb.vb2_buf,
- 0);
- /* update DMA address */
- ppi->ops->update_addr(ppi, (unsigned long)addr);
- /* enable ppi */
- ppi->ops->start(ppi);
-
- return 0;
-
-err:
- list_for_each_entry_safe(buf, tmp, &bcap_dev->dma_queue, list) {
- list_del(&buf->list);
- vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
- }
-
- return ret;
-}
-
-static void bcap_stop_streaming(struct vb2_queue *vq)
-{
- struct bcap_device *bcap_dev = vb2_get_drv_priv(vq);
- struct ppi_if *ppi = bcap_dev->ppi;
- int ret;
-
- bcap_dev->stop = true;
- wait_for_completion(&bcap_dev->comp);
- ppi->ops->stop(ppi);
- ppi->ops->detach_irq(ppi);
- ret = v4l2_subdev_call(bcap_dev->sd, video, s_stream, 0);
- if (ret && (ret != -ENOIOCTLCMD))
- v4l2_err(&bcap_dev->v4l2_dev,
- "stream off failed in subdev\n");
-
- /* release all active buffers */
- if (bcap_dev->cur_frm)
- vb2_buffer_done(&bcap_dev->cur_frm->vb.vb2_buf,
- VB2_BUF_STATE_ERROR);
-
- while (!list_empty(&bcap_dev->dma_queue)) {
- bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
- struct bcap_buffer, list);
- list_del_init(&bcap_dev->cur_frm->list);
- vb2_buffer_done(&bcap_dev->cur_frm->vb.vb2_buf,
- VB2_BUF_STATE_ERROR);
- }
-}
-
-static const struct vb2_ops bcap_video_qops = {
- .queue_setup = bcap_queue_setup,
- .buf_prepare = bcap_buffer_prepare,
- .buf_cleanup = bcap_buffer_cleanup,
- .buf_queue = bcap_buffer_queue,
- .wait_prepare = vb2_ops_wait_prepare,
- .wait_finish = vb2_ops_wait_finish,
- .start_streaming = bcap_start_streaming,
- .stop_streaming = bcap_stop_streaming,
-};
-
-static irqreturn_t bcap_isr(int irq, void *dev_id)
-{
- struct ppi_if *ppi = dev_id;
- struct bcap_device *bcap_dev = ppi->priv;
- struct vb2_v4l2_buffer *vbuf = &bcap_dev->cur_frm->vb;
- struct vb2_buffer *vb = &vbuf->vb2_buf;
- dma_addr_t addr;
-
- spin_lock(&bcap_dev->lock);
-
- if (!list_empty(&bcap_dev->dma_queue)) {
- vb->timestamp = ktime_get_ns();
- if (ppi->err) {
- vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
- ppi->err = false;
- } else {
- vbuf->sequence = bcap_dev->sequence++;
- vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
- }
- bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
- struct bcap_buffer, list);
- list_del_init(&bcap_dev->cur_frm->list);
- } else {
- /* clear error flag, we will get a new frame */
- if (ppi->err)
- ppi->err = false;
- }
-
- ppi->ops->stop(ppi);
-
- if (bcap_dev->stop) {
- complete(&bcap_dev->comp);
- } else {
- addr = vb2_dma_contig_plane_dma_addr(
- &bcap_dev->cur_frm->vb.vb2_buf, 0);
- ppi->ops->update_addr(ppi, (unsigned long)addr);
- ppi->ops->start(ppi);
- }
-
- spin_unlock(&bcap_dev->lock);
-
- return IRQ_HANDLED;
-}
-
-static int bcap_querystd(struct file *file, void *priv, v4l2_std_id *std)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_STD))
- return -ENODATA;
-
- return v4l2_subdev_call(bcap_dev->sd, video, querystd, std);
-}
-
-static int bcap_g_std(struct file *file, void *priv, v4l2_std_id *std)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_STD))
- return -ENODATA;
-
- *std = bcap_dev->std;
- return 0;
-}
-
-static int bcap_s_std(struct file *file, void *priv, v4l2_std_id std)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
- int ret;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_STD))
- return -ENODATA;
-
- if (vb2_is_busy(&bcap_dev->buffer_queue))
- return -EBUSY;
-
- ret = v4l2_subdev_call(bcap_dev->sd, video, s_std, std);
- if (ret < 0)
- return ret;
-
- bcap_dev->std = std;
- return 0;
-}
-
-static int bcap_enum_dv_timings(struct file *file, void *priv,
- struct v4l2_enum_dv_timings *timings)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_DV_TIMINGS))
- return -ENODATA;
-
- timings->pad = 0;
-
- return v4l2_subdev_call(bcap_dev->sd, pad,
- enum_dv_timings, timings);
-}
-
-static int bcap_query_dv_timings(struct file *file, void *priv,
- struct v4l2_dv_timings *timings)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_DV_TIMINGS))
- return -ENODATA;
-
- return v4l2_subdev_call(bcap_dev->sd, video,
- query_dv_timings, timings);
-}
-
-static int bcap_g_dv_timings(struct file *file, void *priv,
- struct v4l2_dv_timings *timings)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_DV_TIMINGS))
- return -ENODATA;
-
- *timings = bcap_dev->dv_timings;
- return 0;
-}
-
-static int bcap_s_dv_timings(struct file *file, void *priv,
- struct v4l2_dv_timings *timings)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_input input;
- int ret;
-
- input = bcap_dev->cfg->inputs[bcap_dev->cur_input];
- if (!(input.capabilities & V4L2_IN_CAP_DV_TIMINGS))
- return -ENODATA;
-
- if (vb2_is_busy(&bcap_dev->buffer_queue))
- return -EBUSY;
-
- ret = v4l2_subdev_call(bcap_dev->sd, video, s_dv_timings, timings);
- if (ret < 0)
- return ret;
-
- bcap_dev->dv_timings = *timings;
- return 0;
-}
-
-static int bcap_enum_input(struct file *file, void *priv,
- struct v4l2_input *input)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct bfin_capture_config *config = bcap_dev->cfg;
- int ret;
- u32 status;
-
- if (input->index >= config->num_inputs)
- return -EINVAL;
-
- *input = config->inputs[input->index];
- /* get input status */
- ret = v4l2_subdev_call(bcap_dev->sd, video, g_input_status, &status);
- if (!ret)
- input->status = status;
- return 0;
-}
-
-static int bcap_g_input(struct file *file, void *priv, unsigned int *index)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
-
- *index = bcap_dev->cur_input;
- return 0;
-}
-
-static int bcap_s_input(struct file *file, void *priv, unsigned int index)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct bfin_capture_config *config = bcap_dev->cfg;
- struct bcap_route *route;
- int ret;
-
- if (vb2_is_busy(&bcap_dev->buffer_queue))
- return -EBUSY;
-
- if (index >= config->num_inputs)
- return -EINVAL;
-
- route = &config->routes[index];
- ret = v4l2_subdev_call(bcap_dev->sd, video, s_routing,
- route->input, route->output, 0);
- if ((ret < 0) && (ret != -ENOIOCTLCMD)) {
- v4l2_err(&bcap_dev->v4l2_dev, "Failed to set input\n");
- return ret;
- }
- bcap_dev->cur_input = index;
- /* if this route has specific config, update ppi control */
- if (route->ppi_control)
- config->ppi_control = route->ppi_control;
- return 0;
-}
-
-static int bcap_try_format(struct bcap_device *bcap,
- struct v4l2_pix_format *pixfmt,
- struct bcap_format *bcap_fmt)
-{
- struct bcap_format *sf = bcap->sensor_formats;
- struct bcap_format *fmt = NULL;
- struct v4l2_subdev_pad_config pad_cfg;
- struct v4l2_subdev_format format = {
- .which = V4L2_SUBDEV_FORMAT_TRY,
- };
- int ret, i;
-
- for (i = 0; i < bcap->num_sensor_formats; i++) {
- fmt = &sf[i];
- if (pixfmt->pixelformat == fmt->pixelformat)
- break;
- }
- if (i == bcap->num_sensor_formats)
- fmt = &sf[0];
-
- v4l2_fill_mbus_format(&format.format, pixfmt, fmt->mbus_code);
- ret = v4l2_subdev_call(bcap->sd, pad, set_fmt, &pad_cfg,
- &format);
- if (ret < 0)
- return ret;
- v4l2_fill_pix_format(pixfmt, &format.format);
- if (bcap_fmt) {
- for (i = 0; i < bcap->num_sensor_formats; i++) {
- fmt = &sf[i];
- if (format.format.code == fmt->mbus_code)
- break;
- }
- *bcap_fmt = *fmt;
- }
- pixfmt->bytesperline = pixfmt->width * fmt->bpp / 8;
- pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
- return 0;
-}
-
-static int bcap_enum_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_fmtdesc *fmt)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct bcap_format *sf = bcap_dev->sensor_formats;
-
- if (fmt->index >= bcap_dev->num_sensor_formats)
- return -EINVAL;
-
- fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- strlcpy(fmt->description,
- sf[fmt->index].desc,
- sizeof(fmt->description));
- fmt->pixelformat = sf[fmt->index].pixelformat;
- return 0;
-}
-
-static int bcap_try_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *fmt)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
-
- return bcap_try_format(bcap_dev, pixfmt, NULL);
-}
-
-static int bcap_g_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *fmt)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
-
- fmt->fmt.pix = bcap_dev->fmt;
- return 0;
-}
-
-static int bcap_s_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *fmt)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- struct v4l2_subdev_format format = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- };
- struct bcap_format bcap_fmt;
- struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
- int ret;
-
- if (vb2_is_busy(&bcap_dev->buffer_queue))
- return -EBUSY;
-
- /* see if format works */
- ret = bcap_try_format(bcap_dev, pixfmt, &bcap_fmt);
- if (ret < 0)
- return ret;
-
- v4l2_fill_mbus_format(&format.format, pixfmt, bcap_fmt.mbus_code);
- ret = v4l2_subdev_call(bcap_dev->sd, pad, set_fmt, NULL, &format);
- if (ret < 0)
- return ret;
- bcap_dev->fmt = *pixfmt;
- bcap_dev->bpp = bcap_fmt.bpp;
- bcap_dev->dlen = bcap_fmt.dlen;
- return 0;
-}
-
-static int bcap_querycap(struct file *file, void *priv,
- struct v4l2_capability *cap)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
-
- cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
- cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
- strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
- strlcpy(cap->bus_info, "Blackfin Platform", sizeof(cap->bus_info));
- strlcpy(cap->card, bcap_dev->cfg->card_name, sizeof(cap->card));
- return 0;
-}
-
-static int bcap_g_parm(struct file *file, void *fh,
- struct v4l2_streamparm *a)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
-
- if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- return v4l2_subdev_call(bcap_dev->sd, video, g_parm, a);
-}
-
-static int bcap_s_parm(struct file *file, void *fh,
- struct v4l2_streamparm *a)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
-
- if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- return v4l2_subdev_call(bcap_dev->sd, video, s_parm, a);
-}
-
-static int bcap_log_status(struct file *file, void *priv)
-{
- struct bcap_device *bcap_dev = video_drvdata(file);
- /* status for sub devices */
- v4l2_device_call_all(&bcap_dev->v4l2_dev, 0, core, log_status);
- return 0;
-}
-
-static const struct v4l2_ioctl_ops bcap_ioctl_ops = {
- .vidioc_querycap = bcap_querycap,
- .vidioc_g_fmt_vid_cap = bcap_g_fmt_vid_cap,
- .vidioc_enum_fmt_vid_cap = bcap_enum_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = bcap_s_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = bcap_try_fmt_vid_cap,
- .vidioc_enum_input = bcap_enum_input,
- .vidioc_g_input = bcap_g_input,
- .vidioc_s_input = bcap_s_input,
- .vidioc_querystd = bcap_querystd,
- .vidioc_s_std = bcap_s_std,
- .vidioc_g_std = bcap_g_std,
- .vidioc_s_dv_timings = bcap_s_dv_timings,
- .vidioc_g_dv_timings = bcap_g_dv_timings,
- .vidioc_query_dv_timings = bcap_query_dv_timings,
- .vidioc_enum_dv_timings = bcap_enum_dv_timings,
- .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_g_parm = bcap_g_parm,
- .vidioc_s_parm = bcap_s_parm,
- .vidioc_log_status = bcap_log_status,
-};
-
-static const struct v4l2_file_operations bcap_fops = {
- .owner = THIS_MODULE,
- .open = v4l2_fh_open,
- .release = vb2_fop_release,
- .unlocked_ioctl = video_ioctl2,
- .mmap = vb2_fop_mmap,
-#ifndef CONFIG_MMU
- .get_unmapped_area = vb2_fop_get_unmapped_area,
-#endif
- .poll = vb2_fop_poll
-};
-
-static int bcap_probe(struct platform_device *pdev)
-{
- struct bcap_device *bcap_dev;
- struct video_device *vfd;
- struct i2c_adapter *i2c_adap;
- struct bfin_capture_config *config;
- struct vb2_queue *q;
- struct bcap_route *route;
- int ret;
-
- config = pdev->dev.platform_data;
- if (!config || !config->num_inputs) {
- v4l2_err(pdev->dev.driver, "Unable to get board config\n");
- return -ENODEV;
- }
-
- bcap_dev = kzalloc(sizeof(*bcap_dev), GFP_KERNEL);
- if (!bcap_dev)
- return -ENOMEM;
-
- bcap_dev->cfg = config;
-
- bcap_dev->ppi = ppi_create_instance(pdev, config->ppi_info);
- if (!bcap_dev->ppi) {
- v4l2_err(pdev->dev.driver, "Unable to create ppi\n");
- ret = -ENODEV;
- goto err_free_dev;
- }
- bcap_dev->ppi->priv = bcap_dev;
-
- vfd = &bcap_dev->video_dev;
- /* initialize field of video device */
- vfd->release = video_device_release_empty;
- vfd->fops = &bcap_fops;
- vfd->ioctl_ops = &bcap_ioctl_ops;
- vfd->tvnorms = 0;
- vfd->v4l2_dev = &bcap_dev->v4l2_dev;
- strncpy(vfd->name, CAPTURE_DRV_NAME, sizeof(vfd->name));
-
- ret = v4l2_device_register(&pdev->dev, &bcap_dev->v4l2_dev);
- if (ret) {
- v4l2_err(pdev->dev.driver,
- "Unable to register v4l2 device\n");
- goto err_free_ppi;
- }
- v4l2_info(&bcap_dev->v4l2_dev, "v4l2 device registered\n");
-
- bcap_dev->v4l2_dev.ctrl_handler = &bcap_dev->ctrl_handler;
- ret = v4l2_ctrl_handler_init(&bcap_dev->ctrl_handler, 0);
- if (ret) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to init control handler\n");
- goto err_unreg_v4l2;
- }
-
- spin_lock_init(&bcap_dev->lock);
- /* initialize queue */
- q = &bcap_dev->buffer_queue;
- q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- q->io_modes = VB2_MMAP | VB2_DMABUF;
- q->drv_priv = bcap_dev;
- q->buf_struct_size = sizeof(struct bcap_buffer);
- q->ops = &bcap_video_qops;
- q->mem_ops = &vb2_dma_contig_memops;
- q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- q->lock = &bcap_dev->mutex;
- q->min_buffers_needed = 1;
- q->dev = &pdev->dev;
-
- ret = vb2_queue_init(q);
- if (ret)
- goto err_free_handler;
-
- mutex_init(&bcap_dev->mutex);
- init_completion(&bcap_dev->comp);
-
- /* init video dma queues */
- INIT_LIST_HEAD(&bcap_dev->dma_queue);
-
- vfd->lock = &bcap_dev->mutex;
- vfd->queue = q;
-
- /* register video device */
- ret = video_register_device(&bcap_dev->video_dev, VFL_TYPE_GRABBER, -1);
- if (ret) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to register video device\n");
- goto err_free_handler;
- }
- video_set_drvdata(&bcap_dev->video_dev, bcap_dev);
- v4l2_info(&bcap_dev->v4l2_dev, "video device registered as: %s\n",
- video_device_node_name(vfd));
-
- /* load up the subdevice */
- i2c_adap = i2c_get_adapter(config->i2c_adapter_id);
- if (!i2c_adap) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to find i2c adapter\n");
- ret = -ENODEV;
- goto err_unreg_vdev;
-
- }
- bcap_dev->sd = v4l2_i2c_new_subdev_board(&bcap_dev->v4l2_dev,
- i2c_adap,
- &config->board_info,
- NULL);
- if (bcap_dev->sd) {
- int i;
-
- /* update tvnorms from the sub devices */
- for (i = 0; i < config->num_inputs; i++)
- vfd->tvnorms |= config->inputs[i].std;
- } else {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to register sub device\n");
- ret = -ENODEV;
- goto err_unreg_vdev;
- }
-
- v4l2_info(&bcap_dev->v4l2_dev, "v4l2 sub device registered\n");
-
- /*
- * explicitly set input, otherwise some boards
- * may not work at the state as we expected
- */
- route = &config->routes[0];
- ret = v4l2_subdev_call(bcap_dev->sd, video, s_routing,
- route->input, route->output, 0);
- if ((ret < 0) && (ret != -ENOIOCTLCMD)) {
- v4l2_err(&bcap_dev->v4l2_dev, "Failed to set input\n");
- goto err_unreg_vdev;
- }
- bcap_dev->cur_input = 0;
- /* if this route has specific config, update ppi control */
- if (route->ppi_control)
- config->ppi_control = route->ppi_control;
-
- /* now we can probe the default state */
- if (config->inputs[0].capabilities & V4L2_IN_CAP_STD) {
- v4l2_std_id std;
- ret = v4l2_subdev_call(bcap_dev->sd, video, g_std, &std);
- if (ret) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to get std\n");
- goto err_unreg_vdev;
- }
- bcap_dev->std = std;
- }
- if (config->inputs[0].capabilities & V4L2_IN_CAP_DV_TIMINGS) {
- struct v4l2_dv_timings dv_timings;
- ret = v4l2_subdev_call(bcap_dev->sd, video,
- g_dv_timings, &dv_timings);
- if (ret) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to get dv timings\n");
- goto err_unreg_vdev;
- }
- bcap_dev->dv_timings = dv_timings;
- }
- ret = bcap_init_sensor_formats(bcap_dev);
- if (ret) {
- v4l2_err(&bcap_dev->v4l2_dev,
- "Unable to create sensor formats table\n");
- goto err_unreg_vdev;
- }
- return 0;
-err_unreg_vdev:
- video_unregister_device(&bcap_dev->video_dev);
-err_free_handler:
- v4l2_ctrl_handler_free(&bcap_dev->ctrl_handler);
-err_unreg_v4l2:
- v4l2_device_unregister(&bcap_dev->v4l2_dev);
-err_free_ppi:
- ppi_delete_instance(bcap_dev->ppi);
-err_free_dev:
- kfree(bcap_dev);
- return ret;
-}
-
-static int bcap_remove(struct platform_device *pdev)
-{
- struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
- struct bcap_device *bcap_dev = container_of(v4l2_dev,
- struct bcap_device, v4l2_dev);
-
- bcap_free_sensor_formats(bcap_dev);
- video_unregister_device(&bcap_dev->video_dev);
- v4l2_ctrl_handler_free(&bcap_dev->ctrl_handler);
- v4l2_device_unregister(v4l2_dev);
- ppi_delete_instance(bcap_dev->ppi);
- kfree(bcap_dev);
- return 0;
-}
-
-static struct platform_driver bcap_driver = {
- .driver = {
- .name = CAPTURE_DRV_NAME,
- },
- .probe = bcap_probe,
- .remove = bcap_remove,
-};
-module_platform_driver(bcap_driver);
-
-MODULE_DESCRIPTION("Analog Devices blackfin video capture driver");
-MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * ppi.c Analog Devices Parallel Peripheral Interface driver
- *
- * Copyright (c) 2011 Analog Devices Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-
-#include <asm/bfin_ppi.h>
-#include <asm/blackfin.h>
-#include <asm/cacheflush.h>
-#include <asm/dma.h>
-#include <asm/portmux.h>
-
-#include <media/blackfin/ppi.h>
-
-static int ppi_attach_irq(struct ppi_if *ppi, irq_handler_t handler);
-static void ppi_detach_irq(struct ppi_if *ppi);
-static int ppi_start(struct ppi_if *ppi);
-static int ppi_stop(struct ppi_if *ppi);
-static int ppi_set_params(struct ppi_if *ppi, struct ppi_params *params);
-static void ppi_update_addr(struct ppi_if *ppi, unsigned long addr);
-
-static const struct ppi_ops ppi_ops = {
- .attach_irq = ppi_attach_irq,
- .detach_irq = ppi_detach_irq,
- .start = ppi_start,
- .stop = ppi_stop,
- .set_params = ppi_set_params,
- .update_addr = ppi_update_addr,
-};
-
-static irqreturn_t ppi_irq_err(int irq, void *dev_id)
-{
- struct ppi_if *ppi = dev_id;
- const struct ppi_info *info = ppi->info;
-
- switch (info->type) {
- case PPI_TYPE_PPI:
- {
- struct bfin_ppi_regs *reg = info->base;
- unsigned short status;
-
- /* register on bf561 is cleared when read
- * others are W1C
- */
- status = bfin_read16(®->status);
- if (status & 0x3000)
- ppi->err = true;
- bfin_write16(®->status, 0xff00);
- break;
- }
- case PPI_TYPE_EPPI:
- {
- struct bfin_eppi_regs *reg = info->base;
- unsigned short status;
-
- status = bfin_read16(®->status);
- if (status & 0x2)
- ppi->err = true;
- bfin_write16(®->status, 0xffff);
- break;
- }
- case PPI_TYPE_EPPI3:
- {
- struct bfin_eppi3_regs *reg = info->base;
- unsigned long stat;
-
- stat = bfin_read32(®->stat);
- if (stat & 0x2)
- ppi->err = true;
- bfin_write32(®->stat, 0xc0ff);
- break;
- }
- default:
- break;
- }
-
- return IRQ_HANDLED;
-}
-
-static int ppi_attach_irq(struct ppi_if *ppi, irq_handler_t handler)
-{
- const struct ppi_info *info = ppi->info;
- int ret;
-
- ret = request_dma(info->dma_ch, "PPI_DMA");
-
- if (ret) {
- pr_err("Unable to allocate DMA channel for PPI\n");
- return ret;
- }
- set_dma_callback(info->dma_ch, handler, ppi);
-
- if (ppi->err_int) {
- ret = request_irq(info->irq_err, ppi_irq_err, 0, "PPI ERROR", ppi);
- if (ret) {
- pr_err("Unable to allocate IRQ for PPI\n");
- free_dma(info->dma_ch);
- }
- }
- return ret;
-}
-
-static void ppi_detach_irq(struct ppi_if *ppi)
-{
- const struct ppi_info *info = ppi->info;
-
- if (ppi->err_int)
- free_irq(info->irq_err, ppi);
- free_dma(info->dma_ch);
-}
-
-static int ppi_start(struct ppi_if *ppi)
-{
- const struct ppi_info *info = ppi->info;
-
- /* enable DMA */
- enable_dma(info->dma_ch);
-
- /* enable PPI */
- ppi->ppi_control |= PORT_EN;
- switch (info->type) {
- case PPI_TYPE_PPI:
- {
- struct bfin_ppi_regs *reg = info->base;
- bfin_write16(®->control, ppi->ppi_control);
- break;
- }
- case PPI_TYPE_EPPI:
- {
- struct bfin_eppi_regs *reg = info->base;
- bfin_write32(®->control, ppi->ppi_control);
- break;
- }
- case PPI_TYPE_EPPI3:
- {
- struct bfin_eppi3_regs *reg = info->base;
- bfin_write32(®->ctl, ppi->ppi_control);
- break;
- }
- default:
- return -EINVAL;
- }
-
- SSYNC();
- return 0;
-}
-
-static int ppi_stop(struct ppi_if *ppi)
-{
- const struct ppi_info *info = ppi->info;
-
- /* disable PPI */
- ppi->ppi_control &= ~PORT_EN;
- switch (info->type) {
- case PPI_TYPE_PPI:
- {
- struct bfin_ppi_regs *reg = info->base;
- bfin_write16(®->control, ppi->ppi_control);
- break;
- }
- case PPI_TYPE_EPPI:
- {
- struct bfin_eppi_regs *reg = info->base;
- bfin_write32(®->control, ppi->ppi_control);
- break;
- }
- case PPI_TYPE_EPPI3:
- {
- struct bfin_eppi3_regs *reg = info->base;
- bfin_write32(®->ctl, ppi->ppi_control);
- break;
- }
- default:
- return -EINVAL;
- }
-
- /* disable DMA */
- clear_dma_irqstat(info->dma_ch);
- disable_dma(info->dma_ch);
-
- SSYNC();
- return 0;
-}
-
-static int ppi_set_params(struct ppi_if *ppi, struct ppi_params *params)
-{
- const struct ppi_info *info = ppi->info;
- int dma32 = 0;
- int dma_config, bytes_per_line;
- int hcount, hdelay, samples_per_line;
-
-#ifdef CONFIG_PINCTRL
- static const char * const pin_state[] = {"8bit", "16bit", "24bit"};
- struct pinctrl *pctrl;
- struct pinctrl_state *pstate;
-
- if (params->dlen > 24 || params->dlen <= 0)
- return -EINVAL;
- pctrl = devm_pinctrl_get(ppi->dev);
- if (IS_ERR(pctrl))
- return PTR_ERR(pctrl);
- pstate = pinctrl_lookup_state(pctrl,
- pin_state[(params->dlen + 7) / 8 - 1]);
- if (pinctrl_select_state(pctrl, pstate))
- return -EINVAL;
-#endif
-
- bytes_per_line = params->width * params->bpp / 8;
- /* convert parameters unit from pixels to samples */
- hcount = params->width * params->bpp / params->dlen;
- hdelay = params->hdelay * params->bpp / params->dlen;
- samples_per_line = params->line * params->bpp / params->dlen;
- if (params->int_mask == 0xFFFFFFFF)
- ppi->err_int = false;
- else
- ppi->err_int = true;
-
- dma_config = (DMA_FLOW_STOP | RESTART | DMA2D | DI_EN_Y);
- ppi->ppi_control = params->ppi_control & ~PORT_EN;
- if (!(ppi->ppi_control & PORT_DIR))
- dma_config |= WNR;
- switch (info->type) {
- case PPI_TYPE_PPI:
- {
- struct bfin_ppi_regs *reg = info->base;
-
- if (params->ppi_control & DMA32)
- dma32 = 1;
-
- bfin_write16(®->control, ppi->ppi_control);
- bfin_write16(®->count, samples_per_line - 1);
- bfin_write16(®->frame, params->frame);
- break;
- }
- case PPI_TYPE_EPPI:
- {
- struct bfin_eppi_regs *reg = info->base;
-
- if ((params->ppi_control & PACK_EN)
- || (params->ppi_control & 0x38000) > DLEN_16)
- dma32 = 1;
-
- bfin_write32(®->control, ppi->ppi_control);
- bfin_write16(®->line, samples_per_line);
- bfin_write16(®->frame, params->frame);
- bfin_write16(®->hdelay, hdelay);
- bfin_write16(®->vdelay, params->vdelay);
- bfin_write16(®->hcount, hcount);
- bfin_write16(®->vcount, params->height);
- break;
- }
- case PPI_TYPE_EPPI3:
- {
- struct bfin_eppi3_regs *reg = info->base;
-
- if ((params->ppi_control & PACK_EN)
- || (params->ppi_control & 0x70000) > DLEN_16)
- dma32 = 1;
-
- bfin_write32(®->ctl, ppi->ppi_control);
- bfin_write32(®->line, samples_per_line);
- bfin_write32(®->frame, params->frame);
- bfin_write32(®->hdly, hdelay);
- bfin_write32(®->vdly, params->vdelay);
- bfin_write32(®->hcnt, hcount);
- bfin_write32(®->vcnt, params->height);
- if (params->int_mask)
- bfin_write32(®->imsk, params->int_mask & 0xFF);
- if (ppi->ppi_control & PORT_DIR) {
- u32 hsync_width, vsync_width, vsync_period;
-
- hsync_width = params->hsync
- * params->bpp / params->dlen;
- vsync_width = params->vsync * samples_per_line;
- vsync_period = samples_per_line * params->frame;
- bfin_write32(®->fs1_wlhb, hsync_width);
- bfin_write32(®->fs1_paspl, samples_per_line);
- bfin_write32(®->fs2_wlvb, vsync_width);
- bfin_write32(®->fs2_palpf, vsync_period);
- }
- break;
- }
- default:
- return -EINVAL;
- }
-
- if (dma32) {
- dma_config |= WDSIZE_32 | PSIZE_32;
- set_dma_x_count(info->dma_ch, bytes_per_line >> 2);
- set_dma_x_modify(info->dma_ch, 4);
- set_dma_y_modify(info->dma_ch, 4);
- } else {
- dma_config |= WDSIZE_16 | PSIZE_16;
- set_dma_x_count(info->dma_ch, bytes_per_line >> 1);
- set_dma_x_modify(info->dma_ch, 2);
- set_dma_y_modify(info->dma_ch, 2);
- }
- set_dma_y_count(info->dma_ch, params->height);
- set_dma_config(info->dma_ch, dma_config);
-
- SSYNC();
- return 0;
-}
-
-static void ppi_update_addr(struct ppi_if *ppi, unsigned long addr)
-{
- set_dma_start_addr(ppi->info->dma_ch, addr);
-}
-
-struct ppi_if *ppi_create_instance(struct platform_device *pdev,
- const struct ppi_info *info)
-{
- struct ppi_if *ppi;
-
- if (!info || !info->pin_req)
- return NULL;
-
-#ifndef CONFIG_PINCTRL
- if (peripheral_request_list(info->pin_req, KBUILD_MODNAME)) {
- dev_err(&pdev->dev, "request peripheral failed\n");
- return NULL;
- }
-#endif
-
- ppi = kzalloc(sizeof(*ppi), GFP_KERNEL);
- if (!ppi) {
- peripheral_free_list(info->pin_req);
- return NULL;
- }
- ppi->ops = &ppi_ops;
- ppi->info = info;
- ppi->dev = &pdev->dev;
-
- pr_info("ppi probe success\n");
- return ppi;
-}
-EXPORT_SYMBOL(ppi_create_instance);
-
-void ppi_delete_instance(struct ppi_if *ppi)
-{
- peripheral_free_list(ppi->info->pin_req);
- kfree(ppi);
-}
-EXPORT_SYMBOL(ppi_delete_instance);
-
-MODULE_DESCRIPTION("Analog Devices PPI driver");
-MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
-MODULE_LICENSE("GPL v2");
projects / mirror_ubuntu-jammy-kernel.git / commitdiff