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Commit d12c9088 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] atmel-isi: remove dependency of the soc-camera framework 

This patch converts the atmel-isi driver from a soc-camera driver to a driver
that is stand-alone.
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Acked-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent e48f4eea
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Inline Side-by-side
Showing with 698 additions and 498 deletions
drivers/media/platform/soc_camera/Kconfig
View file @ d12c9088
......@@ -28,9 +28,8 @@ config VIDEO_SH_MOBILE_CEU
config VIDEO_ATMEL_ISI
tristate "ATMEL Image Sensor Interface (ISI) support"
depends on VIDEO_DEV && SOC_CAMERA
depends on VIDEO_V4L2 && OF && HAS_DMA
depends on ARCH_AT91 || COMPILE_TEST
depends on HAS_DMA
select VIDEOBUF2_DMA_CONTIG
---help---
This module makes the ATMEL Image Sensor Interface available
......
drivers/media/platform/soc_camera/atmel-isi.c
View file @ d12c9088
......@@ -22,18 +22,22 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <media/soc_camera.h>
#include <media/drv-intf/soc_mediabus.h>
#include <linux/of.h>
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/v4l2-of.h>
#include <media/videobuf2-dma-contig.h>
#include <media/v4l2-image-sizes.h>
#include "atmel-isi.h"
#define MAX_BUFFER_NUM 32
#define MAX_SUPPORT_WIDTH 2048
#define MAX_SUPPORT_HEIGHT 2048
#define VID_LIMIT_BYTES (16 * 1024 * 1024)
#define MIN_FRAME_RATE 15
#define FRAME_INTERVAL_MILLI_SEC (1000 / MIN_FRAME_RATE)
......@@ -65,9 +69,34 @@ struct frame_buffer {
struct list_head list;
};
struct isi_graph_entity {
struct device_node *node;
struct v4l2_async_subdev asd;
struct v4l2_subdev *subdev;
};
/*
* struct isi_format - ISI media bus format information
* @fourcc: Fourcc code for this format
* @mbus_code: V4L2 media bus format code.
* @bpp: Bytes per pixel (when stored in memory)
* @swap: Byte swap configuration value
* @support: Indicates format supported by subdev
* @skip: Skip duplicate format supported by subdev
*/
struct isi_format {
u32 fourcc;
u32 mbus_code;
u8 bpp;
u32 swap;
};
struct atmel_isi {
/* Protects the access of variables shared with the ISR */
spinlock_t lock;
spinlock_t irqlock;
struct device *dev;
void __iomem *regs;
int sequence;
......@@ -76,7 +105,7 @@ struct atmel_isi {
struct fbd *p_fb_descriptors;
dma_addr_t fb_descriptors_phys;
struct list_head dma_desc_head;
struct isi_dma_desc dma_desc[MAX_BUFFER_NUM];
struct isi_dma_desc dma_desc[VIDEO_MAX_FRAME];
bool enable_preview_path;
struct completion complete;
......@@ -90,9 +119,22 @@ struct atmel_isi {
struct list_head video_buffer_list;
struct frame_buffer *active;
struct soc_camera_host soc_host;
struct v4l2_device v4l2_dev;
struct video_device *vdev;
struct v4l2_async_notifier notifier;
struct isi_graph_entity entity;
struct v4l2_format fmt;
const struct isi_format **user_formats;
unsigned int num_user_formats;
const struct isi_format *current_fmt;
struct mutex lock;
struct vb2_queue queue;
};
#define notifier_to_isi(n) container_of(n, struct atmel_isi, notifier)
static void isi_writel(struct atmel_isi *isi, u32 reg, u32 val)
{
writel(val, isi->regs + reg);
......@@ -102,107 +144,33 @@ static u32 isi_readl(struct atmel_isi *isi, u32 reg)
return readl(isi->regs + reg);
}
static u32 setup_cfg2_yuv_swap(struct atmel_isi *isi,
const struct soc_camera_format_xlate *xlate)
{
if (xlate->host_fmt->fourcc == V4L2_PIX_FMT_YUYV) {
/* all convert to YUYV */
switch (xlate->code) {
case MEDIA_BUS_FMT_VYUY8_2X8:
return ISI_CFG2_YCC_SWAP_MODE_3;
case MEDIA_BUS_FMT_UYVY8_2X8:
return ISI_CFG2_YCC_SWAP_MODE_2;
case MEDIA_BUS_FMT_YVYU8_2X8:
return ISI_CFG2_YCC_SWAP_MODE_1;
}
} else if (xlate->host_fmt->fourcc == V4L2_PIX_FMT_RGB565) {
/*
* Preview path is enabled, it will convert UYVY to RGB format.
* But if sensor output format is not UYVY, we need to set
* YCC_SWAP_MODE to convert it as UYVY.
*/
switch (xlate->code) {
case MEDIA_BUS_FMT_VYUY8_2X8:
return ISI_CFG2_YCC_SWAP_MODE_1;
case MEDIA_BUS_FMT_YUYV8_2X8:
return ISI_CFG2_YCC_SWAP_MODE_2;
case MEDIA_BUS_FMT_YVYU8_2X8:
return ISI_CFG2_YCC_SWAP_MODE_3;
}
}
/*
* By default, no swap for the codec path of Atmel ISI. So codec
* output is same as sensor's output.
* For instance, if sensor's output is YUYV, then codec outputs YUYV.
* And if sensor's output is UYVY, then codec outputs UYVY.
*/
return ISI_CFG2_YCC_SWAP_DEFAULT;
}
static void configure_geometry(struct atmel_isi *isi, u32 width,
u32 height, const struct soc_camera_format_xlate *xlate)
static void configure_geometry(struct atmel_isi *isi)
{
u32 cfg2, psize;
u32 fourcc = xlate->host_fmt->fourcc;
u32 fourcc = isi->current_fmt->fourcc;
isi->enable_preview_path = fourcc == V4L2_PIX_FMT_RGB565 ||
fourcc == V4L2_PIX_FMT_RGB32;
/* According to sensor's output format to set cfg2 */
switch (xlate->code) {
default:
/* Grey */
case MEDIA_BUS_FMT_Y8_1X8:
cfg2 = ISI_CFG2_GRAYSCALE | ISI_CFG2_COL_SPACE_YCbCr;
break;
/* YUV */
case MEDIA_BUS_FMT_VYUY8_2X8:
case MEDIA_BUS_FMT_UYVY8_2X8:
case MEDIA_BUS_FMT_YVYU8_2X8:
case MEDIA_BUS_FMT_YUYV8_2X8:
cfg2 = ISI_CFG2_COL_SPACE_YCbCr |
setup_cfg2_yuv_swap(isi, xlate);
break;
/* RGB, TODO */
}
cfg2 = isi->current_fmt->swap;
isi_writel(isi, ISI_CTRL, ISI_CTRL_DIS);
/* Set width */
cfg2 |= ((width - 1) << ISI_CFG2_IM_HSIZE_OFFSET) &
cfg2 |= ((isi->fmt.fmt.pix.width - 1) << ISI_CFG2_IM_HSIZE_OFFSET) &
ISI_CFG2_IM_HSIZE_MASK;
/* Set height */
cfg2 |= ((height - 1) << ISI_CFG2_IM_VSIZE_OFFSET)
cfg2 |= ((isi->fmt.fmt.pix.height - 1) << ISI_CFG2_IM_VSIZE_OFFSET)
& ISI_CFG2_IM_VSIZE_MASK;
isi_writel(isi, ISI_CFG2, cfg2);
/* No down sampling, preview size equal to sensor output size */
psize = ((width - 1) << ISI_PSIZE_PREV_HSIZE_OFFSET) &
psize = ((isi->fmt.fmt.pix.width - 1) << ISI_PSIZE_PREV_HSIZE_OFFSET) &
ISI_PSIZE_PREV_HSIZE_MASK;
psize |= ((height - 1) << ISI_PSIZE_PREV_VSIZE_OFFSET) &
psize |= ((isi->fmt.fmt.pix.height - 1) << ISI_PSIZE_PREV_VSIZE_OFFSET) &
ISI_PSIZE_PREV_VSIZE_MASK;
isi_writel(isi, ISI_PSIZE, psize);
isi_writel(isi, ISI_PDECF, ISI_PDECF_NO_SAMPLING);
return;
}
static bool is_supported(struct soc_camera_device *icd,
const u32 pixformat)
{
switch (pixformat) {
/* YUV, including grey */
case V4L2_PIX_FMT_GREY:
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_VYUY:
/* RGB */
case V4L2_PIX_FMT_RGB565:
return true;
default:
return false;
}
}
static irqreturn_t atmel_isi_handle_streaming(struct atmel_isi *isi)
......@@ -214,6 +182,7 @@ static irqreturn_t atmel_isi_handle_streaming(struct atmel_isi *isi)
list_del_init(&buf->list);
vbuf->vb2_buf.timestamp = ktime_get_ns();
vbuf->sequence = isi->sequence++;
vbuf->field = V4L2_FIELD_NONE;
vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE);
}
......@@ -247,7 +216,7 @@ static irqreturn_t isi_interrupt(int irq, void *dev_id)
u32 status, mask, pending;
irqreturn_t ret = IRQ_NONE;
spin_lock(&isi->lock);
spin_lock(&isi->irqlock);
status = isi_readl(isi, ISI_STATUS);
mask = isi_readl(isi, ISI_INTMASK);
......@@ -267,7 +236,7 @@ static irqreturn_t isi_interrupt(int irq, void *dev_id)
ret = atmel_isi_handle_streaming(isi);
}
spin_unlock(&isi->lock);
spin_unlock(&isi->irqlock);
return ret;
}
......@@ -305,26 +274,21 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct atmel_isi *isi = vb2_get_drv_priv(vq);
unsigned long size;
size = icd->sizeimage;
size = isi->fmt.fmt.pix.sizeimage;
if (!*nbuffers || *nbuffers > MAX_BUFFER_NUM)
*nbuffers = MAX_BUFFER_NUM;
if (size * *nbuffers > VID_LIMIT_BYTES)
*nbuffers = VID_LIMIT_BYTES / size;
/* Make sure the image size is large enough. */
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
sizes[0] = size;
isi->sequence = 0;
isi->active = NULL;
dev_dbg(icd->parent, "%s, count=%d, size=%ld\n", __func__,
dev_dbg(isi->dev, "%s, count=%d, size=%ld\n", __func__,
*nbuffers, size);
return 0;
......@@ -344,17 +308,15 @@ static int buffer_init(struct vb2_buffer *vb)
static int buffer_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
struct frame_buffer *buf = container_of(vbuf, struct frame_buffer, vb);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct atmel_isi *isi = vb2_get_drv_priv(vb->vb2_queue);
unsigned long size;
struct isi_dma_desc *desc;
size = icd->sizeimage;
size = isi->fmt.fmt.pix.sizeimage;
if (vb2_plane_size(vb, 0) < size) {
dev_err(icd->parent, "%s data will not fit into plane (%lu < %lu)\n",
dev_err(isi->dev, "%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0), size);
return -EINVAL;
}
......@@ -363,7 +325,7 @@ static int buffer_prepare(struct vb2_buffer *vb)
if (!buf->p_dma_desc) {
if (list_empty(&isi->dma_desc_head)) {
dev_err(icd->parent, "Not enough dma descriptors.\n");
dev_err(isi->dev, "Not enough dma descriptors.\n");
return -EINVAL;
} else {
/* Get an available descriptor */
......@@ -387,9 +349,7 @@ static int buffer_prepare(struct vb2_buffer *vb)
static void buffer_cleanup(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct atmel_isi *isi = vb2_get_drv_priv(vb->vb2_queue);
struct frame_buffer *buf = container_of(vbuf, struct frame_buffer, vb);
/* This descriptor is available now and we add to head list */
......@@ -409,7 +369,7 @@ static void start_dma(struct atmel_isi *isi, struct frame_buffer *buffer)
/* Check if already in a frame */
if (!isi->enable_preview_path) {
if (isi_readl(isi, ISI_STATUS) & ISI_CTRL_CDC) {
dev_err(isi->soc_host.icd->parent, "Already in frame handling.\n");
dev_err(isi->dev, "Already in frame handling.\n");
return;
}
......@@ -443,13 +403,11 @@ static void start_dma(struct atmel_isi *isi, struct frame_buffer *buffer)
static void buffer_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct atmel_isi *isi = vb2_get_drv_priv(vb->vb2_queue);
struct frame_buffer *buf = container_of(vbuf, struct frame_buffer, vb);
unsigned long flags = 0;
spin_lock_irqsave(&isi->lock, flags);
spin_lock_irqsave(&isi->irqlock, flags);
list_add_tail(&buf->list, &isi->video_buffer_list);
if (isi->active == NULL) {
......@@ -457,60 +415,83 @@ static void buffer_queue(struct vb2_buffer *vb)
if (vb2_is_streaming(vb->vb2_queue))
start_dma(isi, buf);
}
spin_unlock_irqrestore(&isi->lock, flags);
spin_unlock_irqrestore(&isi->irqlock, flags);
}
static int start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct atmel_isi *isi = vb2_get_drv_priv(vq);
struct frame_buffer *buf, *node;
int ret;
pm_runtime_get_sync(ici->v4l2_dev.dev);
/* Enable stream on the sub device */
ret = v4l2_subdev_call(isi->entity.subdev, video, s_stream, 1);
if (ret && ret != -ENOIOCTLCMD) {
dev_err(isi->dev, "stream on failed in subdev\n");
goto err_start_stream;
}
pm_runtime_get_sync(isi->dev);
/* Reset ISI */
ret = atmel_isi_wait_status(isi, WAIT_ISI_RESET);
if (ret < 0) {
dev_err(icd->parent, "Reset ISI timed out\n");
pm_runtime_put(ici->v4l2_dev.dev);
return ret;
dev_err(isi->dev, "Reset ISI timed out\n");
goto err_reset;
}
/* Disable all interrupts */
isi_writel(isi, ISI_INTDIS, (u32)~0UL);
configure_geometry(isi, icd->user_width, icd->user_height,
icd->current_fmt);
isi->sequence = 0;
configure_geometry(isi);
spin_lock_irq(&isi->lock);
spin_lock_irq(&isi->irqlock);
/* Clear any pending interrupt */
isi_readl(isi, ISI_STATUS);
if (count)
start_dma(isi, isi->active);
spin_unlock_irq(&isi->lock);
start_dma(isi, isi->active);
spin_unlock_irq(&isi->irqlock);
return 0;
err_reset:
pm_runtime_put(isi->dev);
v4l2_subdev_call(isi->entity.subdev, video, s_stream, 0);
err_start_stream:
spin_lock_irq(&isi->irqlock);
isi->active = NULL;
/* Release all active buffers */
list_for_each_entry_safe(buf, node, &isi->video_buffer_list, list) {
list_del_init(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
}
spin_unlock_irq(&isi->irqlock);
return ret;
}
/* abort streaming and wait for last buffer */
static void stop_streaming(struct vb2_queue *vq)
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct atmel_isi *isi = vb2_get_drv_priv(vq);
struct frame_buffer *buf, *node;
int ret = 0;
unsigned long timeout;
spin_lock_irq(&isi->lock);
/* Disable stream on the sub device */
ret = v4l2_subdev_call(isi->entity.subdev, video, s_stream, 0);
if (ret && ret != -ENOIOCTLCMD)
dev_err(isi->dev, "stream off failed in subdev\n");
spin_lock_irq(&isi->irqlock);
isi->active = NULL;
/* Release all active buffers */
list_for_each_entry_safe(buf, node, &isi->video_buffer_list, list) {
list_del_init(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
}
spin_unlock_irq(&isi->lock);
spin_unlock_irq(&isi->irqlock);
if (!isi->enable_preview_path) {
timeout = jiffies + FRAME_INTERVAL_MILLI_SEC * HZ;
......@@ -520,7 +501,7 @@ static void stop_streaming(struct vb2_queue *vq)
msleep(1);
if (time_after(jiffies, timeout))
dev_err(icd->parent,
dev_err(isi->dev,
"Timeout waiting for finishing codec request\n");
}
......@@ -531,9 +512,9 @@ static void stop_streaming(struct vb2_queue *vq)
/* Disable ISI and wait for it is done */
ret = atmel_isi_wait_status(isi, WAIT_ISI_DISABLE);
if (ret < 0)
dev_err(icd->parent, "Disable ISI timed out\n");
dev_err(isi->dev, "Disable ISI timed out\n");
pm_runtime_put(ici->v4l2_dev.dev);
pm_runtime_put(isi->dev);
}
static const struct vb2_ops isi_video_qops = {
......@@ -548,380 +529,257 @@ static const struct vb2_ops isi_video_qops = {
.wait_finish = vb2_ops_wait_finish,
};
/* ------------------------------------------------------------------
SOC camera operations for the device
------------------------------------------------------------------*/
static int isi_camera_init_videobuf(struct vb2_queue *q,
struct soc_camera_device *icd)
static int isi_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *fmt)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = video_drvdata(file);
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP;
q->drv_priv = icd;
q->buf_struct_size = sizeof(struct frame_buffer);
q->ops = &isi_video_qops;
q->mem_ops = &vb2_dma_contig_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->lock = &ici->host_lock;
q->dev = ici->v4l2_dev.dev;
*fmt = isi->fmt;
return vb2_queue_init(q);
return 0;
}
static int isi_camera_set_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
static const struct isi_format *find_format_by_fourcc(struct atmel_isi *isi,
unsigned int fourcc)
{
unsigned int num_formats = isi->num_user_formats;
const struct isi_format *fmt;
unsigned int i;
for (i = 0; i < num_formats; i++) {
fmt = isi->user_formats[i];
if (fmt->fourcc == fourcc)
return fmt;
}
return NULL;
}
static int isi_try_fmt(struct atmel_isi *isi, struct v4l2_format *f,
const struct isi_format **current_fmt)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
const struct isi_format *isi_fmt;
struct v4l2_pix_format *pixfmt = &f->fmt.pix;
struct v4l2_subdev_pad_config pad_cfg;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.which = V4L2_SUBDEV_FORMAT_TRY,
};
struct v4l2_mbus_framefmt *mf = &format.format;
int ret;
/* check with atmel-isi support format, if not support use YUYV */
if (!is_supported(icd, pix->pixelformat))
pix->pixelformat = V4L2_PIX_FMT_YUYV;
xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
if (!xlate) {
dev_warn(icd->parent, "Format %x not found\n",
pix->pixelformat);
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
}
dev_dbg(icd->parent, "Plan to set format %dx%d\n",
pix->width, pix->height);
isi_fmt = find_format_by_fourcc(isi, pixfmt->pixelformat);
if (!isi_fmt) {
isi_fmt = isi->user_formats[isi->num_user_formats - 1];
pixfmt->pixelformat = isi_fmt->fourcc;
}
mf->width = pix->width;
mf->height = pix->height;
mf->field = pix->field;
mf->colorspace = pix->colorspace;
mf->code = xlate->code;
/* Limit to Atmel ISC hardware capabilities */
if (pixfmt->width > MAX_SUPPORT_WIDTH)
pixfmt->width = MAX_SUPPORT_WIDTH;
if (pixfmt->height > MAX_SUPPORT_HEIGHT)
pixfmt->height = MAX_SUPPORT_HEIGHT;
ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &format);
v4l2_fill_mbus_format(&format.format, pixfmt, isi_fmt->mbus_code);
ret = v4l2_subdev_call(isi->entity.subdev, pad, set_fmt,
&pad_cfg, &format);
if (ret < 0)
return ret;
if (mf->code != xlate->code)
return -EINVAL;
v4l2_fill_pix_format(pixfmt, &format.format);
pix->width = mf->width;
pix->height = mf->height;
pix->field = mf->field;
pix->colorspace = mf->colorspace;
icd->current_fmt = xlate;
pixfmt->field = V4L2_FIELD_NONE;
pixfmt->bytesperline = pixfmt->width * isi_fmt->bpp;
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
dev_dbg(icd->parent, "Finally set format %dx%d\n",
pix->width, pix->height);
if (current_fmt)
*current_fmt = isi_fmt;
return ret;
return 0;
}
static int isi_camera_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
static int isi_set_fmt(struct atmel_isi *isi, struct v4l2_format *f)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_subdev_pad_config pad_cfg;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_TRY,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct v4l2_mbus_framefmt *mf = &format.format;
u32 pixfmt = pix->pixelformat;
const struct isi_format *current_fmt;
int ret;
/* check with atmel-isi support format, if not support use YUYV */
if (!is_supported(icd, pix->pixelformat))
pix->pixelformat = V4L2_PIX_FMT_YUYV;
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (pixfmt && !xlate) {
dev_warn(icd->parent, "Format %x not found\n", pixfmt);
return -EINVAL;
}
/* limit to Atmel ISI hardware capabilities */
if (pix->height > MAX_SUPPORT_HEIGHT)
pix->height = MAX_SUPPORT_HEIGHT;
if (pix->width > MAX_SUPPORT_WIDTH)
pix->width = MAX_SUPPORT_WIDTH;
/* limit to sensor capabilities */
mf->width = pix->width;
mf->height = pix->height;
mf->field = pix->field;
mf->colorspace = pix->colorspace;
mf->code = xlate->code;
ret = isi_try_fmt(isi, f, &current_fmt);
if (ret)
return ret;
ret = v4l2_subdev_call(sd, pad, set_fmt, &pad_cfg, &format);
v4l2_fill_mbus_format(&format.format, &f->fmt.pix,
current_fmt->mbus_code);
ret = v4l2_subdev_call(isi->entity.subdev, pad,
set_fmt, NULL, &format);
if (ret < 0)
return ret;
pix->width = mf->width;
pix->height = mf->height;
pix->colorspace = mf->colorspace;
switch (mf->field) {
case V4L2_FIELD_ANY:
pix->field = V4L2_FIELD_NONE;
break;
case V4L2_FIELD_NONE:
break;
default:
dev_err(icd->parent, "Field type %d unsupported.\n",
mf->field);
ret = -EINVAL;
}
isi->fmt = *f;
isi->current_fmt = current_fmt;
return ret;
return 0;
}
static const struct soc_mbus_pixelfmt isi_camera_formats[] = {
{
.fourcc = V4L2_PIX_FMT_YUYV,
.name = "Packed YUV422 16 bit",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
{
.fourcc = V4L2_PIX_FMT_RGB565,
.name = "RGB565",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
};
/* This will be corrected as we get more formats */
static bool isi_camera_packing_supported(const struct soc_mbus_pixelfmt *fmt)
static int isi_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
return fmt->packing == SOC_MBUS_PACKING_NONE ||
(fmt->bits_per_sample == 8 &&
fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) ||
(fmt->bits_per_sample > 8 &&
fmt->packing == SOC_MBUS_PACKING_EXTEND16);
struct atmel_isi *isi = video_drvdata(file);
if (vb2_is_streaming(&isi->queue))
return -EBUSY;
return isi_set_fmt(isi, f);
}
#define ISI_BUS_PARAM (V4L2_MBUS_MASTER | \
V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
V4L2_MBUS_HSYNC_ACTIVE_LOW | \
V4L2_MBUS_VSYNC_ACTIVE_HIGH | \
V4L2_MBUS_VSYNC_ACTIVE_LOW | \
V4L2_MBUS_PCLK_SAMPLE_RISING | \
V4L2_MBUS_PCLK_SAMPLE_FALLING | \
V4L2_MBUS_DATA_ACTIVE_HIGH)
static int isi_camera_try_bus_param(struct soc_camera_device *icd,
unsigned char buswidth)
static int isi_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
unsigned long common_flags;
int ret;
struct atmel_isi *isi = video_drvdata(file);
ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
if (!ret) {
common_flags = soc_mbus_config_compatible(&cfg,
ISI_BUS_PARAM);
if (!common_flags) {
dev_warn(icd->parent,
"Flags incompatible: camera 0x%x, host 0x%x\n",
cfg.flags, ISI_BUS_PARAM);
return -EINVAL;
}
} else if (ret != -ENOIOCTLCMD) {
return ret;
}
if ((1 << (buswidth - 1)) & isi->width_flags)
return 0;
return -EINVAL;
return isi_try_fmt(isi, f, NULL);
}
static int isi_camera_get_formats(struct soc_camera_device *icd,
unsigned int idx,
struct soc_camera_format_xlate *xlate)
static int isi_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
int formats = 0, ret, i, n;
/* sensor format */
struct v4l2_subdev_mbus_code_enum code = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.index = idx,
};
/* soc camera host format */
const struct soc_mbus_pixelfmt *fmt;
ret = v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &code);
if (ret < 0)
/* No more formats */
return 0;
struct atmel_isi *isi = video_drvdata(file);
fmt = soc_mbus_get_fmtdesc(code.code);
if (!fmt) {
dev_err(icd->parent,
"Invalid format code #%u: %d\n", idx, code.code);
return 0;
}
if (f->index >= isi->num_user_formats)
return -EINVAL;
/* This also checks support for the requested bits-per-sample */
ret = isi_camera_try_bus_param(icd, fmt->bits_per_sample);
if (ret < 0) {
dev_err(icd->parent,
"Fail to try the bus parameters.\n");
return 0;
}
f->pixelformat = isi->user_formats[f->index]->fourcc;
return 0;
}
switch (code.code) {
case MEDIA_BUS_FMT_UYVY8_2X8:
case MEDIA_BUS_FMT_VYUY8_2X8:
case MEDIA_BUS_FMT_YUYV8_2X8:
case MEDIA_BUS_FMT_YVYU8_2X8:
n = ARRAY_SIZE(isi_camera_formats);
formats += n;
for (i = 0; xlate && i < n; i++, xlate++) {
xlate->host_fmt = &isi_camera_formats[i];
xlate->code = code.code;
dev_dbg(icd->parent, "Providing format %s using code %d\n",
xlate->host_fmt->name, xlate->code);
}
break;
default:
if (!isi_camera_packing_supported(fmt))
return 0;
if (xlate)
dev_dbg(icd->parent,
"Providing format %s in pass-through mode\n",
fmt->name);
}
static int isi_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strlcpy(cap->driver, "atmel-isi", sizeof(cap->driver));
strlcpy(cap->card, "Atmel Image Sensor Interface", sizeof(cap->card));
strlcpy(cap->bus_info, "platform:isi", sizeof(cap->bus_info));
return 0;
}
/* Generic pass-through */
formats++;
if (xlate) {
xlate->host_fmt = fmt;
xlate->code = code.code;
xlate++;
}
static int isi_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
if (i->index != 0)
return -EINVAL;
return formats;
i->type = V4L2_INPUT_TYPE_CAMERA;
strlcpy(i->name, "Camera", sizeof(i->name));
return 0;
}
static int isi_camera_add_device(struct soc_camera_device *icd)
static int isi_g_input(struct file *file, void *priv, unsigned int *i)
{
dev_dbg(icd->parent, "Atmel ISI Camera driver attached to camera %d\n",
icd->devnum);
*i = 0;
return 0;
}
static int isi_s_input(struct file *file, void *priv, unsigned int i)
{
if (i > 0)
return -EINVAL;
return 0;
}
static void isi_camera_remove_device(struct soc_camera_device *icd)
static int isi_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
{
dev_dbg(icd->parent, "Atmel ISI Camera driver detached from camera %d\n",
icd->devnum);
struct atmel_isi *isi = video_drvdata(file);
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
a->parm.capture.readbuffers = 2;
return v4l2_subdev_call(isi->entity.subdev, video, g_parm, a);
}
static unsigned int isi_camera_poll(struct file *file, poll_table *pt)
static int isi_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
{
struct soc_camera_device *icd = file->private_data;
struct atmel_isi *isi = video_drvdata(file);
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
return vb2_poll(&icd->vb2_vidq, file, pt);
a->parm.capture.readbuffers = 2;
return v4l2_subdev_call(isi->entity.subdev, video, s_parm, a);
}
static int isi_camera_querycap(struct soc_camera_host *ici,
struct v4l2_capability *cap)
static int isi_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
strcpy(cap->driver, "atmel-isi");
strcpy(cap->card, "Atmel Image Sensor Interface");
cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
struct atmel_isi *isi = video_drvdata(file);
const struct isi_format *isi_fmt;
struct v4l2_subdev_frame_size_enum fse = {
.index = fsize->index,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int ret;
isi_fmt = find_format_by_fourcc(isi, fsize->pixel_format);
if (!isi_fmt)
return -EINVAL;
fse.code = isi_fmt->mbus_code;
ret = v4l2_subdev_call(isi->entity.subdev, pad, enum_frame_size,
NULL, &fse);
if (ret)
return ret;
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = fse.max_width;
fsize->discrete.height = fse.max_height;
return 0;
}
static int isi_camera_set_bus_param(struct soc_camera_device *icd)
static int isi_enum_frameintervals(struct file *file, void *fh,
struct v4l2_frmivalenum *fival)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
unsigned long common_flags;
struct atmel_isi *isi = video_drvdata(file);
const struct isi_format *isi_fmt;
struct v4l2_subdev_frame_interval_enum fie = {
.index = fival->index,
.width = fival->width,
.height = fival->height,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int ret;
u32 cfg1 = 0;
ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
if (!ret) {
common_flags = soc_mbus_config_compatible(&cfg,
ISI_BUS_PARAM);
if (!common_flags) {
dev_warn(icd->parent,
"Flags incompatible: camera 0x%x, host 0x%x\n",
cfg.flags, ISI_BUS_PARAM);
return -EINVAL;
}
} else if (ret != -ENOIOCTLCMD) {
isi_fmt = find_format_by_fourcc(isi, fival->pixel_format);
if (!isi_fmt)
return -EINVAL;
fie.code = isi_fmt->mbus_code;
ret = v4l2_subdev_call(isi->entity.subdev, pad,
enum_frame_interval, NULL, &fie);
if (ret)
return ret;
} else {
common_flags = ISI_BUS_PARAM;
}
dev_dbg(icd->parent, "Flags cam: 0x%x host: 0x%x common: 0x%lx\n",
cfg.flags, ISI_BUS_PARAM, common_flags);
/* Make choises, based on platform preferences */
if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
if (isi->pdata.hsync_act_low)
common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
else
common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
}
if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
if (isi->pdata.vsync_act_low)
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
else
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
}
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fival->discrete = fie.interval;
if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) &&
(common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) {
if (isi->pdata.pclk_act_falling)
common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING;
else
common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING;
}
return 0;
}
cfg.flags = common_flags;
ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
if (ret < 0 && ret != -ENOIOCTLCMD) {
dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n",
common_flags, ret);
return ret;
}
static void isi_camera_set_bus_param(struct atmel_isi *isi)
{
u32 cfg1 = 0;
/* set bus param for ISI */
if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
if (isi->pdata.hsync_act_low)
cfg1 |= ISI_CFG1_HSYNC_POL_ACTIVE_LOW;
if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
if (isi->pdata.vsync_act_low)
cfg1 |= ISI_CFG1_VSYNC_POL_ACTIVE_LOW;
if (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
if (isi->pdata.pclk_act_falling)
cfg1 |= ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING;
dev_dbg(icd->parent, "vsync active %s, hsync active %s, sampling on pix clock %s edge\n",
common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? "low" : "high",
common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? "low" : "high",
common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING ? "falling" : "rising");
if (isi->pdata.has_emb_sync)
cfg1 |= ISI_CFG1_EMB_SYNC;
if (isi->pdata.full_mode)
......@@ -930,50 +788,19 @@ static int isi_camera_set_bus_param(struct soc_camera_device *icd)
cfg1 |= ISI_CFG1_THMASK_BEATS_16;
/* Enable PM and peripheral clock before operate isi registers */
pm_runtime_get_sync(ici->v4l2_dev.dev);
pm_runtime_get_sync(isi->dev);
isi_writel(isi, ISI_CTRL, ISI_CTRL_DIS);
isi_writel(isi, ISI_CFG1, cfg1);
pm_runtime_put(ici->v4l2_dev.dev);
return 0;
pm_runtime_put(isi->dev);
}
static struct soc_camera_host_ops isi_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = isi_camera_add_device,
.remove = isi_camera_remove_device,
.set_fmt = isi_camera_set_fmt,
.try_fmt = isi_camera_try_fmt,
.get_formats = isi_camera_get_formats,
.init_videobuf2 = isi_camera_init_videobuf,
.poll = isi_camera_poll,
.querycap = isi_camera_querycap,
.set_bus_param = isi_camera_set_bus_param,
};
/* -----------------------------------------------------------------------*/
static int atmel_isi_remove(struct platform_device *pdev)
{
struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
struct atmel_isi *isi = container_of(soc_host,
struct atmel_isi, soc_host);
soc_camera_host_unregister(soc_host);
dma_free_coherent(&pdev->dev,
sizeof(struct fbd) * MAX_BUFFER_NUM,
isi->p_fb_descriptors,
isi->fb_descriptors_phys);
pm_runtime_disable(&pdev->dev);
return 0;
}
static int atmel_isi_parse_dt(struct atmel_isi *isi,
struct platform_device *pdev)
{
struct device_node *np= pdev->dev.of_node;
struct device_node *np = pdev->dev.of_node;
struct v4l2_of_endpoint ep;
int err;
......@@ -1021,13 +848,335 @@ static int atmel_isi_parse_dt(struct atmel_isi *isi,
return 0;
}
static int isi_open(struct file *file)
{
struct atmel_isi *isi = video_drvdata(file);
struct v4l2_subdev *sd = isi->entity.subdev;
int ret;
if (mutex_lock_interruptible(&isi->lock))
return -ERESTARTSYS;
ret = v4l2_fh_open(file);
if (ret < 0)
goto unlock;
if (!v4l2_fh_is_singular_file(file))
goto fh_rel;
ret = v4l2_subdev_call(sd, core, s_power, 1);
if (ret < 0 && ret != -ENOIOCTLCMD)
goto fh_rel;
ret = isi_set_fmt(isi, &isi->fmt);
if (ret)
v4l2_subdev_call(sd, core, s_power, 0);
fh_rel:
if (ret)
v4l2_fh_release(file);
unlock:
mutex_unlock(&isi->lock);
return ret;
}
static int isi_release(struct file *file)
{
struct atmel_isi *isi = video_drvdata(file);
struct v4l2_subdev *sd = isi->entity.subdev;
bool fh_singular;
int ret;
mutex_lock(&isi->lock);
fh_singular = v4l2_fh_is_singular_file(file);
ret = _vb2_fop_release(file, NULL);
if (fh_singular)
v4l2_subdev_call(sd, core, s_power, 0);
mutex_unlock(&isi->lock);
return ret;
}
static const struct v4l2_ioctl_ops isi_ioctl_ops = {
.vidioc_querycap = isi_querycap,
.vidioc_try_fmt_vid_cap = isi_try_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = isi_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = isi_s_fmt_vid_cap,
.vidioc_enum_fmt_vid_cap = isi_enum_fmt_vid_cap,
.vidioc_enum_input = isi_enum_input,
.vidioc_g_input = isi_g_input,
.vidioc_s_input = isi_s_input,
.vidioc_g_parm = isi_g_parm,
.vidioc_s_parm = isi_s_parm,
.vidioc_enum_framesizes = isi_enum_framesizes,
.vidioc_enum_frameintervals = isi_enum_frameintervals,
.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_prepare_buf = vb2_ioctl_prepare_buf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct v4l2_file_operations isi_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = video_ioctl2,
.open = isi_open,
.release = isi_release,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
.read = vb2_fop_read,
};
static int isi_set_default_fmt(struct atmel_isi *isi)
{
struct v4l2_format f = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.fmt.pix = {
.width = VGA_WIDTH,
.height = VGA_HEIGHT,
.field = V4L2_FIELD_NONE,
.pixelformat = isi->user_formats[0]->fourcc,
},
};
int ret;
ret = isi_try_fmt(isi, &f, NULL);
if (ret)
return ret;
isi->current_fmt = isi->user_formats[0];
isi->fmt = f;
return 0;
}
static const struct isi_format isi_formats[] = {
{
.fourcc = V4L2_PIX_FMT_YUYV,
.mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_DEFAULT,
}, {
.fourcc = V4L2_PIX_FMT_YUYV,
.mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_MODE_1,
}, {
.fourcc = V4L2_PIX_FMT_YUYV,
.mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_MODE_2,
}, {
.fourcc = V4L2_PIX_FMT_YUYV,
.mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_MODE_3,
}, {
.fourcc = V4L2_PIX_FMT_RGB565,
.mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_MODE_2,
}, {
.fourcc = V4L2_PIX_FMT_RGB565,
.mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_MODE_3,
}, {
.fourcc = V4L2_PIX_FMT_RGB565,
.mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_DEFAULT,
}, {
.fourcc = V4L2_PIX_FMT_RGB565,
.mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
.bpp = 2,
.swap = ISI_CFG2_YCC_SWAP_MODE_1,
},
};
static int isi_formats_init(struct atmel_isi *isi)
{
const struct isi_format *isi_fmts[ARRAY_SIZE(isi_formats)];
unsigned int num_fmts = 0, i, j;
struct v4l2_subdev *subdev = isi->entity.subdev;
struct v4l2_subdev_mbus_code_enum mbus_code = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
while (!v4l2_subdev_call(subdev, pad, enum_mbus_code,
NULL, &mbus_code)) {
for (i = 0; i < ARRAY_SIZE(isi_formats); i++) {
if (isi_formats[i].mbus_code != mbus_code.code)
continue;
/* Code supported, have we got this fourcc yet? */
for (j = 0; j < num_fmts; j++)
if (isi_fmts[j]->fourcc == isi_formats[i].fourcc)
/* Already available */
break;
if (j == num_fmts)
/* new */
isi_fmts[num_fmts++] = isi_formats + i;
}
mbus_code.index++;
}
if (!num_fmts)
return -ENXIO;
isi->num_user_formats = num_fmts;
isi->user_formats = devm_kcalloc(isi->dev,
num_fmts, sizeof(struct isi_format *),
GFP_KERNEL);
if (!isi->user_formats) {
dev_err(isi->dev, "could not allocate memory\n");
return -ENOMEM;
}
memcpy(isi->user_formats, isi_fmts,
num_fmts * sizeof(struct isi_format *));
isi->current_fmt = isi->user_formats[0];
return 0;
}
static int isi_graph_notify_complete(struct v4l2_async_notifier *notifier)
{
struct atmel_isi *isi = notifier_to_isi(notifier);
int ret;
isi->vdev->ctrl_handler = isi->entity.subdev->ctrl_handler;
ret = isi_formats_init(isi);
if (ret) {
dev_err(isi->dev, "No supported mediabus format found\n");
return ret;
}
isi_camera_set_bus_param(isi);
ret = isi_set_default_fmt(isi);
if (ret) {
dev_err(isi->dev, "Could not set default format\n");
return ret;
}
ret = video_register_device(isi->vdev, VFL_TYPE_GRABBER, -1);
if (ret) {
dev_err(isi->dev, "Failed to register video device\n");
return ret;
}
dev_dbg(isi->dev, "Device registered as %s\n",
video_device_node_name(isi->vdev));
return 0;
}
static void isi_graph_notify_unbind(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *sd,
struct v4l2_async_subdev *asd)
{
struct atmel_isi *isi = notifier_to_isi(notifier);
dev_dbg(isi->dev, "Removing %s\n", video_device_node_name(isi->vdev));
/* Checks internaly if vdev have been init or not */
video_unregister_device(isi->vdev);
}
static int isi_graph_notify_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
{
struct atmel_isi *isi = notifier_to_isi(notifier);
dev_dbg(isi->dev, "subdev %s bound\n", subdev->name);
isi->entity.subdev = subdev;
return 0;
}
static int isi_graph_parse(struct atmel_isi *isi, struct device_node *node)
{
struct device_node *ep = NULL;
struct device_node *remote;
while (1) {
ep = of_graph_get_next_endpoint(node, ep);
if (!ep)
return -EINVAL;
remote = of_graph_get_remote_port_parent(ep);
if (!remote) {
of_node_put(ep);
return -EINVAL;
}
/* Remote node to connect */
isi->entity.node = remote;
isi->entity.asd.match_type = V4L2_ASYNC_MATCH_OF;
isi->entity.asd.match.of.node = remote;
return 0;
}
}
static int isi_graph_init(struct atmel_isi *isi)
{
struct v4l2_async_subdev **subdevs = NULL;
int ret;
/* Parse the graph to extract a list of subdevice DT nodes. */
ret = isi_graph_parse(isi, isi->dev->of_node);
if (ret < 0) {
dev_err(isi->dev, "Graph parsing failed\n");
return ret;
}
/* Register the subdevices notifier. */
subdevs = devm_kzalloc(isi->dev, sizeof(*subdevs), GFP_KERNEL);
if (subdevs == NULL) {
of_node_put(isi->entity.node);
return -ENOMEM;
}
subdevs[0] = &isi->entity.asd;
isi->notifier.subdevs = subdevs;
isi->notifier.num_subdevs = 1;
isi->notifier.bound = isi_graph_notify_bound;
isi->notifier.unbind = isi_graph_notify_unbind;
isi->notifier.complete = isi_graph_notify_complete;
ret = v4l2_async_notifier_register(&isi->v4l2_dev, &isi->notifier);
if (ret < 0) {
dev_err(isi->dev, "Notifier registration failed\n");
of_node_put(isi->entity.node);
return ret;
}
return 0;
}
static int atmel_isi_probe(struct platform_device *pdev)
{
int irq;
struct atmel_isi *isi;
struct vb2_queue *q;
struct resource *regs;
int ret, i;
struct soc_camera_host *soc_host;
isi = devm_kzalloc(&pdev->dev, sizeof(struct atmel_isi), GFP_KERNEL);
if (!isi) {
......@@ -1044,20 +1193,65 @@ static int atmel_isi_probe(struct platform_device *pdev)
return ret;
isi->active = NULL;
spin_lock_init(&isi->lock);
isi->dev = &pdev->dev;
mutex_init(&isi->lock);
spin_lock_init(&isi->irqlock);
INIT_LIST_HEAD(&isi->video_buffer_list);
INIT_LIST_HEAD(&isi->dma_desc_head);
q = &isi->queue;
/* Initialize the top-level structure */
ret = v4l2_device_register(&pdev->dev, &isi->v4l2_dev);
if (ret)
return ret;
isi->vdev = video_device_alloc();
if (isi->vdev == NULL) {
ret = -ENOMEM;
goto err_vdev_alloc;
}
/* video node */
isi->vdev->fops = &isi_fops;
isi->vdev->v4l2_dev = &isi->v4l2_dev;
isi->vdev->queue = &isi->queue;
strlcpy(isi->vdev->name, KBUILD_MODNAME, sizeof(isi->vdev->name));
isi->vdev->release = video_device_release;
isi->vdev->ioctl_ops = &isi_ioctl_ops;
isi->vdev->lock = &isi->lock;
isi->vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
V4L2_CAP_READWRITE;
video_set_drvdata(isi->vdev, isi);
/* buffer queue */
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF;
q->lock = &isi->lock;
q->drv_priv = isi;
q->buf_struct_size = sizeof(struct frame_buffer);
q->ops = &isi_video_qops;
q->mem_ops = &vb2_dma_contig_memops;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->min_buffers_needed = 2;
q->dev = &pdev->dev;
ret = vb2_queue_init(q);
if (ret < 0) {
dev_err(&pdev->dev, "failed to initialize VB2 queue\n");
goto err_vb2_queue;
}
isi->p_fb_descriptors = dma_alloc_coherent(&pdev->dev,
sizeof(struct fbd) * MAX_BUFFER_NUM,
sizeof(struct fbd) * VIDEO_MAX_FRAME,
&isi->fb_descriptors_phys,
GFP_KERNEL);
if (!isi->p_fb_descriptors) {
dev_err(&pdev->dev, "Can't allocate descriptors!\n");
return -ENOMEM;
ret = -ENOMEM;
goto err_dma_alloc;
}
for (i = 0; i < MAX_BUFFER_NUM; i++) {
for (i = 0; i < VIDEO_MAX_FRAME; i++) {
isi->dma_desc[i].p_fbd = isi->p_fb_descriptors + i;
isi->dma_desc[i].fbd_phys = isi->fb_descriptors_phys +
i * sizeof(struct fbd);
......@@ -1089,41 +1283,49 @@ static int atmel_isi_probe(struct platform_device *pdev)
}
isi->irq = irq;
soc_host = &isi->soc_host;
soc_host->drv_name = "isi-camera";
soc_host->ops = &isi_soc_camera_host_ops;
soc_host->priv = isi;
soc_host->v4l2_dev.dev = &pdev->dev;
soc_host->nr = pdev->id;
ret = isi_graph_init(isi);
if (ret < 0)
goto err_req_irq;
pm_suspend_ignore_children(&pdev->dev, true);
pm_runtime_enable(&pdev->dev);
ret = soc_camera_host_register(soc_host);
if (ret) {
dev_err(&pdev->dev, "Unable to register soc camera host\n");
goto err_register_soc_camera_host;
}
platform_set_drvdata(pdev, isi);
return 0;
err_register_soc_camera_host:
pm_runtime_disable(&pdev->dev);
err_req_irq:
err_ioremap:
dma_free_coherent(&pdev->dev,
sizeof(struct fbd) * MAX_BUFFER_NUM,
sizeof(struct fbd) * VIDEO_MAX_FRAME,
isi->p_fb_descriptors,
isi->fb_descriptors_phys);
err_dma_alloc:
err_vb2_queue:
video_device_release(isi->vdev);
err_vdev_alloc:
v4l2_device_unregister(&isi->v4l2_dev);
return ret;
}
static int atmel_isi_remove(struct platform_device *pdev)
{
struct atmel_isi *isi = platform_get_drvdata(pdev);
dma_free_coherent(&pdev->dev,
sizeof(struct fbd) * VIDEO_MAX_FRAME,
isi->p_fb_descriptors,
isi->fb_descriptors_phys);
pm_runtime_disable(&pdev->dev);
v4l2_async_notifier_unregister(&isi->notifier);
v4l2_device_unregister(&isi->v4l2_dev);
return 0;
}
#ifdef CONFIG_PM
static int atmel_isi_runtime_suspend(struct device *dev)
{
struct soc_camera_host *soc_host = to_soc_camera_host(dev);
struct atmel_isi *isi = container_of(soc_host,
struct atmel_isi, soc_host);
struct atmel_isi *isi = dev_get_drvdata(dev);
clk_disable_unprepare(isi->pclk);
......@@ -1131,9 +1333,7 @@ static int atmel_isi_runtime_suspend(struct device *dev)
}
static int atmel_isi_runtime_resume(struct device *dev)
{
struct soc_camera_host *soc_host = to_soc_camera_host(dev);
struct atmel_isi *isi = container_of(soc_host,
struct atmel_isi, soc_host);
struct atmel_isi *isi = dev_get_drvdata(dev);
return clk_prepare_enable(isi->pclk);
}
......@@ -1151,15 +1351,16 @@ static const struct of_device_id atmel_isi_of_match[] = {
MODULE_DEVICE_TABLE(of, atmel_isi_of_match);
static struct platform_driver atmel_isi_driver = {
.remove = atmel_isi_remove,
.driver = {
.name = "atmel_isi",
.of_match_table = of_match_ptr(atmel_isi_of_match),
.pm = &atmel_isi_dev_pm_ops,
},
.probe = atmel_isi_probe,
.remove = atmel_isi_remove,
};
module_platform_driver_probe(atmel_isi_driver, atmel_isi_probe);
module_platform_driver(atmel_isi_driver);
MODULE_AUTHOR("Josh Wu <josh.wu@atmel.com>");
MODULE_DESCRIPTION("The V4L2 driver for Atmel Linux");
......
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