From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
This patch converts the atmel-isi driver from a soc-camera driver to a driver
that is stand-alone.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/platform/soc_camera/Kconfig | 3 +-
drivers/media/platform/soc_camera/atmel-isi.c | 1209 +++++++++++++++----------
2 files changed, 714 insertions(+), 498 deletions(-)
diff --git a/drivers/media/platform/soc_camera/Kconfig b/drivers/media/platform/soc_camera/Kconfig
index 86d74788544f..a37ec91b026e 100644
--- a/drivers/media/platform/soc_camera/Kconfig
+++ b/drivers/media/platform/soc_camera/Kconfig
@@ -29,9 +29,8 @@ 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
diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
index 46de657c3e6d..a6d60c2e207d 100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -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 +69,37 @@ 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;
+
+ bool support;
+ bool skip;
+};
+
+
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 +108,7 @@ 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 +122,22 @@ 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;
+
+ 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 +147,46 @@ 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 struct isi_format isi_formats[] = {
+ { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_YUYV8_2X8,
+ 2, ISI_CFG2_YCC_SWAP_DEFAULT, false },
+ { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_YVYU8_2X8,
+ 2, ISI_CFG2_YCC_SWAP_MODE_1, false },
+ { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_UYVY8_2X8,
+ 2, ISI_CFG2_YCC_SWAP_MODE_2, false },
+ { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_VYUY8_2X8,
+ 2, ISI_CFG2_YCC_SWAP_MODE_3, false },
+ { V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_YUYV8_2X8,
+ 2, ISI_CFG2_YCC_SWAP_MODE_2, false },
+};
-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 cfg2 = 0, psize;
+ 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 +198,7 @@ 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 +232,7 @@ 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 +252,7 @@ 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 +290,21 @@ 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 +324,15 @@ 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 +341,7 @@ 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 +365,7 @@ 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 +385,7 @@ 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 +419,11 @@ 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 +431,83 @@ 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 +517,7 @@ 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 +528,9 @@ 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 +545,257 @@ 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 struct isi_format *find_format_by_fourcc(struct atmel_isi *isi,
+ unsigned int fourcc)
{
- struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- const struct soc_camera_format_xlate *xlate;
- struct v4l2_pix_format *pix = &f->fmt.pix;
+ unsigned int num_formats = isi->num_user_formats;
+ 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,
+ struct isi_format **current_fmt)
+{
+ 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;
+ 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, ¤t_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;
+ isi->fmt = *f;
+ isi->current_fmt = current_fmt;
- 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;
- }
-
- 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;
-
- 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;
- }
+ struct atmel_isi *isi = video_drvdata(file);
- 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;
+ struct atmel_isi *isi = video_drvdata(file);
- ret = v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &code);
- if (ret < 0)
- /* No more formats */
- return 0;
-
- 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);
- return vb2_poll(&icd->vb2_vidq, file, pt);
+ if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ 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 +804,19 @@ 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 +864,335 @@ 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 struct isi_format *find_format_by_code(unsigned int code, int *index)
+{
+ struct isi_format *fmt = &isi_formats[0];
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(isi_formats); i++) {
+ if (fmt->mbus_code == code && !fmt->support && !fmt->skip) {
+ *index = i;
+ return fmt;
+ }
+
+ fmt++;
+ }
+
+ return NULL;
+}
+
+static int isi_formats_init(struct atmel_isi *isi)
+{
+ struct isi_format *fmt;
+ struct v4l2_subdev *subdev = isi->entity.subdev;
+ int num_fmts = 0, i, j;
+ struct v4l2_subdev_mbus_code_enum mbus_code = {
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ };
+
+ fmt = &isi_formats[0];
+
+ while (!v4l2_subdev_call(subdev, pad, enum_mbus_code,
+ NULL, &mbus_code)) {
+ fmt = find_format_by_code(mbus_code.code, &i);
+ if (!fmt) {
+ mbus_code.index++;
+ continue;
+ }
+
+ fmt->support = true;
+ for (i = 0; i < ARRAY_SIZE(isi_formats); i++)
+ if (isi_formats[i].fourcc == fmt->fourcc &&
+ !isi_formats[i].support)
+ isi_formats[i].skip = true;
+ num_fmts++;
+ }
+
+ 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;
+ }
+
+ fmt = &isi_formats[0];
+ for (i = 0, j = 0; i < ARRAY_SIZE(isi_formats); i++) {
+ if (fmt->support)
+ isi->user_formats[j++] = fmt;
+
+ fmt++;
+ }
+ 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 *remote;
+ struct device_node *ep = NULL;
+ int ret = 0;
+
+ while (1) {
+ ep = of_graph_get_next_endpoint(node, ep);
+ if (!ep)
+ break;
+
+ if (ret) {
+ dev_err(isi->dev,
+ "More then one subdev found in graph\n");
+ of_node_put(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;
+ ret++;
+ }
+
+ return ret;
+}
+
+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");
+ goto done;
+ }
+
+ if (!ret) {
+ dev_err(isi->dev, "No subdev found in graph\n");
+ goto done;
+ }
+
+ /* Register the subdevices notifier. */
+ subdevs = devm_kzalloc(isi->dev, sizeof(*subdevs), GFP_KERNEL);
+ if (subdevs == NULL) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ 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");
+ goto done;
+ }
+
+ ret = 0;
+
+done:
+ if (ret < 0) {
+ v4l2_async_notifier_unregister(&isi->notifier);
+ of_node_put(isi->entity.node);
+ }
+
+ return ret;
+}
+
+
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 +1209,65 @@ 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 +1299,49 @@ 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 +1349,7 @@ 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 +1367,16 @@ 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@xxxxxxxxx>");
MODULE_DESCRIPTION("The V4L2 driver for Atmel Linux");
--
2.11.0
--
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