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Commit 283e4a82 authored by Robert Jarzmik's avatar Robert Jarzmik Committed by Mauro Carvalho Chehab
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[media] media: platform: pxa_camera: make a standalone v4l2 device 

This patch removes the soc_camera API dependency from pxa_camera.
In the current status :
 - all previously captures are working the same on pxa270
 - the s_crop() call was removed, judged not working
   (see what happens soc_camera_s_crop() when get_crop() == NULL)
 - if the pixel clock is provided by then sensor, ie. not MCLK, the dual
   stage change is not handled yet.
   => there is no in-tree user of this, so I'll let it that way

 - the MCLK is not yet finished, it's as in the legacy way,
   ie. activated at video device opening and closed at video device
   closing.
   In a subsequence patch pxa_camera_mclk_ops should be used, and
   platform data MCLK ignored. It will be the sensor's duty to request
   the clock and enable it, which will end in pxa_camera_mclk_ops.
Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 226ad6a1
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Showing with 518 additions and 239 deletions
drivers/media/platform/soc_camera/Kconfig
View file @ 283e4a82
......@@ -19,7 +19,7 @@ config SOC_CAMERA_PLATFORM
config VIDEO_PXA27x
tristate "PXA27x Quick Capture Interface driver"
depends on VIDEO_DEV && PXA27x && SOC_CAMERA && HAS_DMA
depends on VIDEO_DEV && PXA27x && HAS_DMA
select VIDEOBUF2_DMA_SG
select SG_SPLIT
---help---
......
drivers/media/platform/soc_camera/pxa_camera.c
View file @ 283e4a82
......@@ -3,6 +3,7 @@
*
* Copyright (C) 2006, Sascha Hauer, Pengutronix
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
* Copyright (C) 2016, Robert Jarzmik <robert.jarzmik@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -14,6 +15,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/errno.h>
......@@ -22,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/moduleparam.h>
#include <linux/of.h>
#include <linux/time.h>
#include <linux/device.h>
#include <linux/platform_device.h>
......@@ -32,13 +35,16 @@
#include <linux/dma-mapping.h>
#include <linux/dma/pxa-dma.h>
#include <media/v4l2-async.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/videobuf2-dma-sg.h>
#include <media/soc_camera.h>
#include <media/drv-intf/soc_mediabus.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-of.h>
#include <media/drv-intf/soc_mediabus.h>
#include <media/videobuf2-dma-sg.h>
#include <linux/videodev2.h>
#include <linux/platform_data/media/camera-pxa.h>
......@@ -46,6 +52,9 @@
#define PXA_CAM_VERSION "0.0.6"
#define PXA_CAM_DRV_NAME "pxa27x-camera"
#define DEFAULT_WIDTH 640
#define DEFAULT_HEIGHT 480
/* Camera Interface */
#define CICR0 0x0000
#define CICR1 0x0004
......@@ -169,7 +178,25 @@
CICR0_EOFM | CICR0_FOM)
#define sensor_call(cam, o, f, args...) \
v4l2_subdev_call(sd, o, f, ##args)
v4l2_subdev_call(cam->sensor, o, f, ##args)
/*
* Format handling
*/
/**
* struct soc_camera_format_xlate - match between host and sensor formats
* @code: code of a sensor provided format
* @host_fmt: host format after host translation from code
*
* Host and sensor translation structure. Used in table of host and sensor
* formats matchings in soc_camera_device. A host can override the generic list
* generation by implementing get_formats(), and use it for format checks and
* format setup.
*/
struct soc_camera_format_xlate {
u32 code;
const struct soc_mbus_pixelfmt *host_fmt;
};
/*
* Structures
......@@ -198,7 +225,18 @@ struct pxa_buffer {
};
struct pxa_camera_dev {
struct soc_camera_host soc_host;
struct v4l2_device v4l2_dev;
struct video_device vdev;
struct v4l2_async_notifier notifier;
struct vb2_queue vb2_vq;
struct v4l2_subdev *sensor;
struct soc_camera_format_xlate *user_formats;
const struct soc_camera_format_xlate *current_fmt;
struct v4l2_pix_format current_pix;
struct v4l2_async_subdev asd;
struct v4l2_async_subdev *asds[1];
/*
* PXA27x is only supposed to handle one camera on its Quick Capture
* interface. If anyone ever builds hardware to enable more than
......@@ -218,11 +256,13 @@ struct pxa_camera_dev {
unsigned long ciclk;
unsigned long mclk;
u32 mclk_divisor;
struct v4l2_clk *mclk_clk;
u16 width_flags; /* max 10 bits */
struct list_head capture;
spinlock_t lock;
struct mutex mlock;
unsigned int buf_sequence;
struct pxa_buffer *active;
......@@ -237,12 +277,69 @@ struct pxa_cam {
static const char *pxa_cam_driver_description = "PXA_Camera";
static struct pxa_camera_dev *icd_to_pcdev(struct soc_camera_device *icd)
/*
* Format translation functions
*/
const struct soc_camera_format_xlate *soc_mbus_xlate_by_fourcc(
struct soc_camera_format_xlate *user_formats, unsigned int fourcc)
{
unsigned int i;
for (i = 0; user_formats[i].code; i++)
if (user_formats[i].host_fmt->fourcc == fourcc)
return user_formats + i;
return NULL;
}
static struct soc_camera_format_xlate *soc_mbus_build_fmts_xlate(
struct v4l2_device *v4l2_dev, struct v4l2_subdev *subdev,
int (*get_formats)(struct v4l2_device *, unsigned int,
struct soc_camera_format_xlate *xlate))
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
unsigned int i, fmts = 0, raw_fmts = 0;
int ret;
struct v4l2_subdev_mbus_code_enum code = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct soc_camera_format_xlate *user_formats;
while (!v4l2_subdev_call(subdev, pad, enum_mbus_code, NULL, &code)) {
raw_fmts++;
code.index++;
}
/*
* First pass - only count formats this host-sensor
* configuration can provide
*/
for (i = 0; i < raw_fmts; i++) {
ret = get_formats(v4l2_dev, i, NULL);
if (ret < 0)
return ERR_PTR(ret);
fmts += ret;
}
if (!fmts)
return ERR_PTR(-ENXIO);
return pcdev;
user_formats = kcalloc(fmts + 1, sizeof(*user_formats), GFP_KERNEL);
if (!user_formats)
return ERR_PTR(-ENOMEM);
/* Second pass - actually fill data formats */
fmts = 0;
for (i = 0; i < raw_fmts; i++) {
ret = get_formats(v4l2_dev, i, user_formats + fmts);
if (ret < 0)
goto egfmt;
fmts += ret;
}
user_formats[fmts].code = 0;
return user_formats;
egfmt:
kfree(user_formats);
return ERR_PTR(ret);
}
/*
......@@ -257,7 +354,12 @@ static struct pxa_buffer *vb2_to_pxa_buffer(struct vb2_buffer *vb)
static struct device *pcdev_to_dev(struct pxa_camera_dev *pcdev)
{
return pcdev->soc_host.v4l2_dev.dev;
return pcdev->v4l2_dev.dev;
}
static struct pxa_camera_dev *v4l2_dev_to_pcdev(struct v4l2_device *v4l2_dev)
{
return container_of(v4l2_dev, struct pxa_camera_dev, v4l2_dev);
}
static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev,
......@@ -338,7 +440,7 @@ static void pxa_videobuf_set_actdma(struct pxa_camera_dev *pcdev,
struct pxa_buffer *buf)
{
buf->active_dma = DMA_Y;
if (pcdev->channels == 3)
if (buf->nb_planes == 3)
buf->active_dma |= DMA_U | DMA_V;
}
......@@ -671,51 +773,6 @@ static irqreturn_t pxa_camera_irq(int irq, void *data)
return IRQ_HANDLED;
}
static int pxa_camera_add_device(struct soc_camera_device *icd)
{
struct pxa_camera_dev *pcdev = icd_to_pcdev(icd);
dev_info(pcdev_to_dev(pcdev), "PXA Camera driver attached to camera %d\n",
icd->devnum);
return 0;
}
static void pxa_camera_remove_device(struct soc_camera_device *icd)
{
struct pxa_camera_dev *pcdev = icd_to_pcdev(icd);
dev_info(pcdev_to_dev(pcdev), "PXA Camera driver detached from camera %d\n",
icd->devnum);
}
/*
* The following two functions absolutely depend on the fact, that
* there can be only one camera on PXA quick capture interface
* Called with .host_lock held
*/
static int pxa_camera_clock_start(struct soc_camera_host *ici)
{
struct pxa_camera_dev *pcdev = ici->priv;
pxa_camera_activate(pcdev);
return 0;
}
/* Called with .host_lock held */
static void pxa_camera_clock_stop(struct soc_camera_host *ici)
{
struct pxa_camera_dev *pcdev = ici->priv;
/* disable capture, disable interrupts */
__raw_writel(0x3ff, pcdev->base + CICR0);
/* Stop DMA engine */
pxa_dma_stop_channels(pcdev);
pxa_camera_deactivate(pcdev);
}
static int test_platform_param(struct pxa_camera_dev *pcdev,
unsigned char buswidth, unsigned long *flags)
{
......@@ -741,12 +798,9 @@ static int test_platform_param(struct pxa_camera_dev *pcdev,
return -EINVAL;
}
static void pxa_camera_setup_cicr(struct soc_camera_device *icd,
static void pxa_camera_setup_cicr(struct pxa_camera_dev *pcdev,
unsigned long flags, __u32 pixfmt)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
unsigned long dw, bpp;
u32 cicr0, cicr1, cicr2, cicr3, cicr4 = 0, y_skip_top;
int ret = sensor_call(pcdev, sensor, g_skip_top_lines, &y_skip_top);
......@@ -758,7 +812,7 @@ static void pxa_camera_setup_cicr(struct soc_camera_device *icd,
* Datawidth is now guaranteed to be equal to one of the three values.
* We fix bit-per-pixel equal to data-width...
*/
switch (icd->current_fmt->host_fmt->bits_per_sample) {
switch (pcdev->current_fmt->host_fmt->bits_per_sample) {
case 10:
dw = 4;
bpp = 0x40;
......@@ -792,7 +846,7 @@ static void pxa_camera_setup_cicr(struct soc_camera_device *icd,
if (cicr0 & CICR0_ENB)
__raw_writel(cicr0 & ~CICR0_ENB, pcdev->base + CICR0);
cicr1 = CICR1_PPL_VAL(icd->user_width - 1) | bpp | dw;
cicr1 = CICR1_PPL_VAL(pcdev->current_pix.width - 1) | bpp | dw;
switch (pixfmt) {
case V4L2_PIX_FMT_YUV422P:
......@@ -821,7 +875,7 @@ static void pxa_camera_setup_cicr(struct soc_camera_device *icd,
}
cicr2 = 0;
cicr3 = CICR3_LPF_VAL(icd->user_height - 1) |
cicr3 = CICR3_LPF_VAL(pcdev->current_pix.height - 1) |
CICR3_BFW_VAL(min((u32)255, y_skip_top));
cicr4 |= pcdev->mclk_divisor;
......@@ -933,13 +987,12 @@ static int pxac_vb2_prepare(struct vb2_buffer *vb)
{
struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
int ret = 0;
switch (pcdev->channels) {
case 1:
case 3:
vb2_set_plane_payload(vb, 0, icd->sizeimage);
vb2_set_plane_payload(vb, 0, pcdev->current_pix.sizeimage);
break;
default:
return -EINVAL;
......@@ -949,7 +1002,7 @@ static int pxac_vb2_prepare(struct vb2_buffer *vb)
"%s (vb=%p) nb_channels=%d size=%lu\n",
__func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0));
WARN_ON(!icd->current_fmt);
WARN_ON(!pcdev->current_fmt);
#ifdef DEBUG
/*
......@@ -989,8 +1042,7 @@ static int pxac_vb2_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
int size = icd->sizeimage;
int size = pcdev->current_pix.sizeimage;
dev_dbg(pcdev_to_dev(pcdev),
"%s(vq=%p nbufs=%d num_planes=%d size=%d)\n",
......@@ -1050,21 +1102,22 @@ static struct vb2_ops pxac_vb2_ops = {
.wait_finish = vb2_ops_wait_finish,
};
static int pxa_camera_init_videobuf2(struct vb2_queue *vq,
struct soc_camera_device *icd)
static int pxa_camera_init_videobuf2(struct pxa_camera_dev *pcdev)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
int ret;
struct vb2_queue *vq = &pcdev->vb2_vq;
memset(vq, 0, sizeof(*vq));
vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
vq->drv_priv = pcdev;
vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
vq->buf_struct_size = sizeof(struct pxa_buffer);
vq->dev = pcdev->v4l2_dev.dev;
vq->ops = &pxac_vb2_ops;
vq->mem_ops = &vb2_dma_sg_memops;
vq->lock = &pcdev->mlock;
ret = vb2_queue_init(vq);
dev_dbg(pcdev_to_dev(pcdev),
......@@ -1076,18 +1129,15 @@ static int pxa_camera_init_videobuf2(struct vb2_queue *vq,
/*
* Video ioctls section
*/
static int pxa_camera_set_bus_param(struct soc_camera_device *icd)
static int pxa_camera_set_bus_param(struct pxa_camera_dev *pcdev)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
u32 pixfmt = icd->current_fmt->host_fmt->fourcc;
u32 pixfmt = pcdev->current_fmt->host_fmt->fourcc;
unsigned long bus_flags, common_flags;
int ret;
struct pxa_cam *cam = icd->host_priv;
ret = test_platform_param(pcdev, icd->current_fmt->host_fmt->bits_per_sample,
ret = test_platform_param(pcdev,
pcdev->current_fmt->host_fmt->bits_per_sample,
&bus_flags);
if (ret < 0)
return ret;
......@@ -1138,24 +1188,20 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd)
cfg.flags = common_flags;
ret = sensor_call(pcdev, video, s_mbus_config, &cfg);
if (ret < 0 && ret != -ENOIOCTLCMD) {
dev_dbg(pcdev_to_dev(pcdev), "camera s_mbus_config(0x%lx) returned %d\n",
dev_dbg(pcdev_to_dev(pcdev),
"camera s_mbus_config(0x%lx) returned %d\n",
common_flags, ret);
return ret;
}
cam->flags = common_flags;
pxa_camera_setup_cicr(icd, common_flags, pixfmt);
pxa_camera_setup_cicr(pcdev, common_flags, pixfmt);
return 0;
}
static int pxa_camera_try_bus_param(struct soc_camera_device *icd,
static int pxa_camera_try_bus_param(struct pxa_camera_dev *pcdev,
unsigned char buswidth)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
unsigned long bus_flags, common_flags;
int ret = test_platform_param(pcdev, buswidth, &bus_flags);
......@@ -1201,13 +1247,12 @@ static bool pxa_camera_packing_supported(const struct soc_mbus_pixelfmt *fmt)
fmt->packing == SOC_MBUS_PACKING_EXTEND16);
}
static int pxa_camera_get_formats(struct soc_camera_device *icd, unsigned int idx,
static int pxa_camera_get_formats(struct v4l2_device *v4l2_dev,
unsigned int idx,
struct soc_camera_format_xlate *xlate)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct pxa_camera_dev *pcdev = icd_to_pcdev(icd);
struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(v4l2_dev);
int formats = 0, ret;
struct pxa_cam *cam;
struct v4l2_subdev_mbus_code_enum code = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.index = idx,
......@@ -1221,25 +1266,16 @@ static int pxa_camera_get_formats(struct soc_camera_device *icd, unsigned int id
fmt = soc_mbus_get_fmtdesc(code.code);
if (!fmt) {
dev_err(pcdev_to_dev(pcdev), "Invalid format code #%u: %d\n", idx, code.code);
dev_err(pcdev_to_dev(pcdev),
"Invalid format code #%u: %d\n", idx, code.code);
return 0;
}
/* This also checks support for the requested bits-per-sample */
ret = pxa_camera_try_bus_param(icd, fmt->bits_per_sample);
ret = pxa_camera_try_bus_param(pcdev, fmt->bits_per_sample);
if (ret < 0)
return 0;
if (!icd->host_priv) {
cam = kzalloc(sizeof(*cam), GFP_KERNEL);
if (!cam)
return -ENOMEM;
icd->host_priv = cam;
} else {
cam = icd->host_priv;
}
switch (code.code) {
case MEDIA_BUS_FMT_UYVY8_2X8:
formats++;
......@@ -1281,10 +1317,22 @@ static int pxa_camera_get_formats(struct soc_camera_device *icd, unsigned int id
return formats;
}
static void pxa_camera_put_formats(struct soc_camera_device *icd)
static int pxa_camera_build_formats(struct pxa_camera_dev *pcdev)
{
struct soc_camera_format_xlate *xlate;
xlate = soc_mbus_build_fmts_xlate(&pcdev->v4l2_dev, pcdev->sensor,
pxa_camera_get_formats);
if (IS_ERR(xlate))
return PTR_ERR(xlate);
pcdev->user_formats = xlate;
return 0;
}
static void pxa_camera_destroy_formats(struct pxa_camera_dev *pcdev)
{
kfree(icd->host_priv);
icd->host_priv = NULL;
kfree(pcdev->user_formats);
}
static int pxa_camera_check_frame(u32 width, u32 height)
......@@ -1294,86 +1342,44 @@ static int pxa_camera_check_frame(u32 width, u32 height)
(width & 0x01);
}
static int pxa_camera_set_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
static int pxac_vidioc_enum_fmt_vid_cap(struct file *filp, void *priv,
struct v4l2_fmtdesc *f)
{
struct device *dev = icd->parent;
struct soc_camera_host *ici = to_soc_camera_host(dev);
struct pxa_camera_dev *pcdev = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate = NULL;
struct soc_camera_sense sense = {
.master_clock = pcdev->mclk,
.pixel_clock_max = pcdev->ciclk / 4,
};
struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct v4l2_mbus_framefmt *mf = &format.format;
int ret;
xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
if (!xlate) {
dev_warn(pcdev_to_dev(pcdev),
"Format %x not found\n", pix->pixelformat);
return -EINVAL;
}
/* If PCLK is used to latch data from the sensor, check sense */
if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN)
/* The caller holds a mutex. */
icd->sense = &sense;
mf->width = pix->width;
mf->height = pix->height;
mf->field = pix->field;
mf->colorspace = pix->colorspace;
mf->code = xlate->code;
struct pxa_camera_dev *pcdev = video_drvdata(filp);
const struct soc_mbus_pixelfmt *format;
unsigned int idx;
ret = sensor_call(pcdev, pad, set_fmt, NULL, &format);
if (mf->code != xlate->code)
for (idx = 0; pcdev->user_formats[idx].code; idx++);
if (f->index >= idx)
return -EINVAL;
icd->sense = NULL;
if (ret < 0) {
dev_warn(pcdev_to_dev(pcdev),
"Failed to configure for format %x\n",
pix->pixelformat);
} else if (pxa_camera_check_frame(mf->width, mf->height)) {
dev_warn(pcdev_to_dev(pcdev),
"Camera driver produced an unsupported frame %dx%d\n",
mf->width, mf->height);
ret = -EINVAL;
} else if (sense.flags & SOCAM_SENSE_PCLK_CHANGED) {
if (sense.pixel_clock > sense.pixel_clock_max) {
dev_err(pcdev_to_dev(pcdev),
"pixel clock %lu set by the camera too high!",
sense.pixel_clock);
return -EIO;
}
recalculate_fifo_timeout(pcdev, sense.pixel_clock);
}
if (ret < 0)
return ret;
format = pcdev->user_formats[f->index].host_fmt;
f->pixelformat = format->fourcc;
return 0;
}
pix->width = mf->width;
pix->height = mf->height;
pix->field = mf->field;
pix->colorspace = mf->colorspace;
icd->current_fmt = xlate;
static int pxac_vidioc_g_fmt_vid_cap(struct file *filp, void *priv,
struct v4l2_format *f)
{
struct pxa_camera_dev *pcdev = video_drvdata(filp);
struct v4l2_pix_format *pix = &f->fmt.pix;
return ret;
pix->width = pcdev->current_pix.width;
pix->height = pcdev->current_pix.height;
pix->bytesperline = pcdev->current_pix.bytesperline;
pix->sizeimage = pcdev->current_pix.sizeimage;
pix->field = pcdev->current_pix.field;
pix->pixelformat = pcdev->current_fmt->host_fmt->fourcc;
pix->colorspace = pcdev->current_pix.colorspace;
dev_dbg(pcdev_to_dev(pcdev), "current_fmt->fourcc: 0x%08x\n",
pcdev->current_fmt->host_fmt->fourcc);
return 0;
}
static int pxa_camera_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
static int pxac_vidioc_try_fmt_vid_cap(struct file *filp, void *priv,
struct v4l2_format *f)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct pxa_camera_dev *pcdev = icd_to_pcdev(icd);
struct pxa_camera_dev *pcdev = video_drvdata(filp);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_subdev_pad_config pad_cfg;
......@@ -1384,7 +1390,7 @@ static int pxa_camera_try_fmt(struct soc_camera_device *icd,
__u32 pixfmt = pix->pixelformat;
int ret;
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
xlate = soc_mbus_xlate_by_fourcc(pcdev->user_formats, pixfmt);
if (!xlate) {
dev_warn(pcdev_to_dev(pcdev), "Format %x not found\n", pixfmt);
return -EINVAL;
......@@ -1400,26 +1406,18 @@ static int pxa_camera_try_fmt(struct soc_camera_device *icd,
&pix->height, 32, 2048, 0,
pixfmt == V4L2_PIX_FMT_YUV422P ? 4 : 0);
/* limit to sensor capabilities */
mf->width = pix->width;
mf->height = pix->height;
/* Only progressive video supported so far */
mf->field = V4L2_FIELD_NONE;
mf->colorspace = pix->colorspace;
mf->code = xlate->code;
v4l2_fill_mbus_format(mf, pix, xlate->code);
ret = sensor_call(pcdev, pad, set_fmt, &pad_cfg, &format);
if (ret < 0)
return ret;
pix->width = mf->width;
pix->height = mf->height;
pix->colorspace = mf->colorspace;
v4l2_fill_pix_format(pix, mf);
/* Only progressive video supported so far */
switch (mf->field) {
case V4L2_FIELD_ANY:
case V4L2_FIELD_NONE:
pix->field = V4L2_FIELD_NONE;
pix->field = V4L2_FIELD_NONE;
break;
default:
/* TODO: support interlaced at least in pass-through mode */
......@@ -1428,20 +1426,74 @@ static int pxa_camera_try_fmt(struct soc_camera_device *icd,
return -EINVAL;
}
return ret;
ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt);
if (ret < 0)
return ret;
pix->bytesperline = ret;
ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline,
pix->height);
if (ret < 0)
return ret;
pix->sizeimage = ret;
return 0;
}
static unsigned int pxa_camera_poll(struct file *file, poll_table *pt)
static int pxac_vidioc_s_fmt_vid_cap(struct file *filp, void *priv,
struct v4l2_format *f)
{
struct soc_camera_device *icd = file->private_data;
struct pxa_camera_dev *pcdev = video_drvdata(filp);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
unsigned long flags;
int ret, is_busy;
dev_dbg(pcdev_to_dev(pcdev),
"s_fmt_vid_cap(pix=%dx%d:%x)\n",
pix->width, pix->height, pix->pixelformat);
spin_lock_irqsave(&pcdev->lock, flags);
is_busy = pcdev->active || vb2_is_busy(&pcdev->vb2_vq);
spin_unlock_irqrestore(&pcdev->lock, flags);
if (is_busy)
return -EBUSY;
ret = pxac_vidioc_try_fmt_vid_cap(filp, priv, f);
if (ret)
return ret;
xlate = soc_mbus_xlate_by_fourcc(pcdev->user_formats,
pix->pixelformat);
v4l2_fill_mbus_format(&format.format, pix, xlate->code);
ret = sensor_call(pcdev, pad, set_fmt, NULL, &format);
if (ret < 0) {
dev_warn(pcdev_to_dev(pcdev),
"Failed to configure for format %x\n",
pix->pixelformat);
} else if (pxa_camera_check_frame(pix->width, pix->height)) {
dev_warn(pcdev_to_dev(pcdev),
"Camera driver produced an unsupported frame %dx%d\n",
pix->width, pix->height);
return -EINVAL;
}
pcdev->current_fmt = xlate;
pcdev->current_pix = *pix;
return vb2_poll(&icd->vb2_vidq, file, pt);
ret = pxa_camera_set_bus_param(pcdev);
return ret;
}
static int pxa_camera_querycap(struct soc_camera_host *ici,
struct v4l2_capability *cap)
static int pxac_vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
/* cap->name is set by the firendly caller:-> */
strlcpy(cap->bus_info, "platform:pxa-camera", sizeof(cap->bus_info));
strlcpy(cap->driver, PXA_CAM_DRV_NAME, sizeof(cap->driver));
strlcpy(cap->card, pxa_cam_driver_description, sizeof(cap->card));
cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
......@@ -1449,13 +1501,212 @@ static int pxa_camera_querycap(struct soc_camera_host *ici,
return 0;
}
static int pxac_vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
if (i->index > 0)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_CAMERA;
strlcpy(i->name, "Camera", sizeof(i->name));
return 0;
}
static int pxac_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
*i = 0;
return 0;
}
static int pxac_vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
if (i > 0)
return -EINVAL;
return 0;
}
static int pxac_fops_camera_open(struct file *filp)
{
struct pxa_camera_dev *pcdev = video_drvdata(filp);
int ret;
mutex_lock(&pcdev->mlock);
ret = v4l2_fh_open(filp);
if (ret < 0)
goto out;
ret = sensor_call(pcdev, core, s_power, 1);
if (ret)
v4l2_fh_release(filp);
out:
mutex_unlock(&pcdev->mlock);
return ret;
}
static int pxac_fops_camera_release(struct file *filp)
{
struct pxa_camera_dev *pcdev = video_drvdata(filp);
int ret;
ret = vb2_fop_release(filp);
if (ret < 0)
return ret;
mutex_lock(&pcdev->mlock);
ret = sensor_call(pcdev, core, s_power, 0);
mutex_unlock(&pcdev->mlock);
return ret;
}
static const struct v4l2_file_operations pxa_camera_fops = {
.owner = THIS_MODULE,
.open = pxac_fops_camera_open,
.release = pxac_fops_camera_release,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
.unlocked_ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops pxa_camera_ioctl_ops = {
.vidioc_querycap = pxac_vidioc_querycap,
.vidioc_enum_input = pxac_vidioc_enum_input,
.vidioc_g_input = pxac_vidioc_g_input,
.vidioc_s_input = pxac_vidioc_s_input,
.vidioc_enum_fmt_vid_cap = pxac_vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = pxac_vidioc_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = pxac_vidioc_s_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = pxac_vidioc_try_fmt_vid_cap,
.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,
};
static struct v4l2_clk_ops pxa_camera_mclk_ops = {
};
static const struct video_device pxa_camera_videodev_template = {
.name = "pxa-camera",
.minor = -1,
.fops = &pxa_camera_fops,
.ioctl_ops = &pxa_camera_ioctl_ops,
.release = video_device_release_empty,
.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING,
};
static int pxa_camera_sensor_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
{
int err;
struct v4l2_device *v4l2_dev = notifier->v4l2_dev;
struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(v4l2_dev);
struct video_device *vdev = &pcdev->vdev;
struct v4l2_pix_format *pix = &pcdev->current_pix;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct v4l2_mbus_framefmt *mf = &format.format;
dev_info(pcdev_to_dev(pcdev), "%s(): trying to bind a device\n",
__func__);
mutex_lock(&pcdev->mlock);
*vdev = pxa_camera_videodev_template;
vdev->v4l2_dev = v4l2_dev;
vdev->lock = &pcdev->mlock;
pcdev->sensor = subdev;
pcdev->vdev.queue = &pcdev->vb2_vq;
pcdev->vdev.v4l2_dev = &pcdev->v4l2_dev;
pcdev->vdev.ctrl_handler = subdev->ctrl_handler;
video_set_drvdata(&pcdev->vdev, pcdev);
err = pxa_camera_build_formats(pcdev);
if (err) {
dev_err(pcdev_to_dev(pcdev), "building formats failed: %d\n",
err);
goto out;
}
pcdev->current_fmt = pcdev->user_formats;
pix->field = V4L2_FIELD_NONE;
pix->width = DEFAULT_WIDTH;
pix->height = DEFAULT_HEIGHT;
pix->bytesperline =
soc_mbus_bytes_per_line(pix->width,
pcdev->current_fmt->host_fmt);
pix->sizeimage =
soc_mbus_image_size(pcdev->current_fmt->host_fmt,
pix->bytesperline, pix->height);
pix->pixelformat = pcdev->current_fmt->host_fmt->fourcc;
v4l2_fill_mbus_format(mf, pix, pcdev->current_fmt->code);
err = sensor_call(pcdev, pad, set_fmt, NULL, &format);
if (err)
goto out;
v4l2_fill_pix_format(pix, mf);
pr_info("%s(): colorspace=0x%x pixfmt=0x%x\n",
__func__, pix->colorspace, pix->pixelformat);
err = pxa_camera_init_videobuf2(pcdev);
if (err)
goto out;
err = video_register_device(&pcdev->vdev, VFL_TYPE_GRABBER, -1);
if (err) {
v4l2_err(v4l2_dev, "register video device failed: %d\n", err);
pcdev->sensor = NULL;
} else {
dev_info(pcdev_to_dev(pcdev),
"PXA Camera driver attached to camera %s\n",
subdev->name);
}
out:
mutex_unlock(&pcdev->mlock);
return err;
}
static void pxa_camera_sensor_unbind(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
{
struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(notifier->v4l2_dev);
mutex_lock(&pcdev->mlock);
dev_info(pcdev_to_dev(pcdev),
"PXA Camera driver detached from camera %s\n",
subdev->name);
/* disable capture, disable interrupts */
__raw_writel(0x3ff, pcdev->base + CICR0);
/* Stop DMA engine */
pxa_dma_stop_channels(pcdev);
pxa_camera_destroy_formats(pcdev);
video_unregister_device(&pcdev->vdev);
pcdev->sensor = NULL;
mutex_unlock(&pcdev->mlock);
}
/*
* Driver probe, remove, suspend and resume operations
*/
static int pxa_camera_suspend(struct device *dev)
{
struct soc_camera_host *ici = to_soc_camera_host(dev);
struct pxa_camera_dev *pcdev = ici->priv;
struct pxa_camera_dev *pcdev = dev_get_drvdata(dev);
int i = 0, ret = 0;
pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR0);
......@@ -1464,8 +1715,7 @@ static int pxa_camera_suspend(struct device *dev)
pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR3);
pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR4);
if (pcdev->soc_host.icd) {
struct v4l2_subdev *sd = soc_camera_to_subdev(pcdev->soc_host.icd);
if (pcdev->sensor) {
ret = sensor_call(pcdev, core, s_power, 0);
if (ret == -ENOIOCTLCMD)
ret = 0;
......@@ -1476,8 +1726,7 @@ static int pxa_camera_suspend(struct device *dev)
static int pxa_camera_resume(struct device *dev)
{
struct soc_camera_host *ici = to_soc_camera_host(dev);
struct pxa_camera_dev *pcdev = ici->priv;
struct pxa_camera_dev *pcdev = dev_get_drvdata(dev);
int i = 0, ret = 0;
__raw_writel(pcdev->save_cicr[i++] & ~CICR0_ENB, pcdev->base + CICR0);
......@@ -1486,8 +1735,7 @@ static int pxa_camera_resume(struct device *dev)
__raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR3);
__raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR4);
if (pcdev->soc_host.icd) {
struct v4l2_subdev *sd = soc_camera_to_subdev(pcdev->soc_host.icd);
if (pcdev->sensor) {
ret = sensor_call(pcdev, core, s_power, 1);
if (ret == -ENOIOCTLCMD)
ret = 0;
......@@ -1500,27 +1748,12 @@ static int pxa_camera_resume(struct device *dev)
return ret;
}
static struct soc_camera_host_ops pxa_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = pxa_camera_add_device,
.remove = pxa_camera_remove_device,
.clock_start = pxa_camera_clock_start,
.clock_stop = pxa_camera_clock_stop,
.get_formats = pxa_camera_get_formats,
.put_formats = pxa_camera_put_formats,
.set_fmt = pxa_camera_set_fmt,
.try_fmt = pxa_camera_try_fmt,
.init_videobuf2 = pxa_camera_init_videobuf2,
.poll = pxa_camera_poll,
.querycap = pxa_camera_querycap,
.set_bus_param = pxa_camera_set_bus_param,
};
static int pxa_camera_pdata_from_dt(struct device *dev,
struct pxa_camera_dev *pcdev)
struct pxa_camera_dev *pcdev,
struct v4l2_async_subdev *asd)
{
u32 mclk_rate;
struct device_node *np = dev->of_node;
struct device_node *remote, *np = dev->of_node;
struct v4l2_of_endpoint ep;
int err = of_property_read_u32(np, "clock-frequency",
&mclk_rate);
......@@ -1531,13 +1764,13 @@ static int pxa_camera_pdata_from_dt(struct device *dev,
np = of_graph_get_next_endpoint(np, NULL);
if (!np) {
dev_err(pcdev_to_dev(pcdev), "could not find endpoint\n");
dev_err(dev, "could not find endpoint\n");
return -EINVAL;
}
err = v4l2_of_parse_endpoint(np, &ep);
if (err) {
dev_err(pcdev_to_dev(pcdev), "could not parse endpoint\n");
dev_err(dev, "could not parse endpoint\n");
goto out;
}
......@@ -1572,6 +1805,15 @@ static int pxa_camera_pdata_from_dt(struct device *dev,
if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
pcdev->platform_flags |= PXA_CAMERA_PCLK_EN;
asd->match_type = V4L2_ASYNC_MATCH_OF;
remote = of_graph_get_remote_port(np);
if (remote) {
asd->match.of.node = remote;
of_node_put(remote);
} else {
dev_notice(dev, "no remote for %s\n", of_node_full_name(np));
}
out:
of_node_put(np);
......@@ -1590,6 +1832,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
};
dma_cap_mask_t mask;
struct pxad_param params;
char clk_name[V4L2_CLK_NAME_SIZE];
int irq;
int err = 0, i;
......@@ -1612,10 +1855,14 @@ static int pxa_camera_probe(struct platform_device *pdev)
pcdev->pdata = pdev->dev.platform_data;
if (&pdev->dev.of_node && !pcdev->pdata) {
err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev);
err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev, &pcdev->asd);
} else {
pcdev->platform_flags = pcdev->pdata->flags;
pcdev->mclk = pcdev->pdata->mclk_10khz * 10000;
pcdev->asd.match_type = V4L2_ASYNC_MATCH_I2C;
pcdev->asd.match.i2c.adapter_id =
pcdev->pdata->sensor_i2c_adapter_id;
pcdev->asd.match.i2c.address = pcdev->pdata->sensor_i2c_address;
}
if (err < 0)
return err;
......@@ -1647,6 +1894,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&pcdev->capture);
spin_lock_init(&pcdev->lock);
mutex_init(&pcdev->mlock);
/*
* Request the regions.
......@@ -1709,19 +1957,48 @@ static int pxa_camera_probe(struct platform_device *pdev)
goto exit_free_dma;
}
pcdev->soc_host.drv_name = PXA_CAM_DRV_NAME;
pcdev->soc_host.ops = &pxa_soc_camera_host_ops;
pcdev->soc_host.priv = pcdev;
pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
pcdev->soc_host.nr = pdev->id;
tasklet_init(&pcdev->task_eof, pxa_camera_eof, (unsigned long)pcdev);
err = soc_camera_host_register(&pcdev->soc_host);
pxa_camera_activate(pcdev);
dev_set_drvdata(&pdev->dev, pcdev);
err = v4l2_device_register(&pdev->dev, &pcdev->v4l2_dev);
if (err)
goto exit_free_dma;
return 0;
pcdev->asds[0] = &pcdev->asd;
pcdev->notifier.subdevs = pcdev->asds;
pcdev->notifier.num_subdevs = 1;
pcdev->notifier.bound = pxa_camera_sensor_bound;
pcdev->notifier.unbind = pxa_camera_sensor_unbind;
if (!of_have_populated_dt())
pcdev->asd.match_type = V4L2_ASYNC_MATCH_I2C;
err = pxa_camera_init_videobuf2(pcdev);
if (err)
goto exit_free_v4l2dev;
if (pcdev->mclk) {
v4l2_clk_name_i2c(clk_name, sizeof(clk_name),
pcdev->asd.match.i2c.adapter_id,
pcdev->asd.match.i2c.address);
pcdev->mclk_clk = v4l2_clk_register(&pxa_camera_mclk_ops,
clk_name, NULL);
if (IS_ERR(pcdev->mclk_clk))
return PTR_ERR(pcdev->mclk_clk);
}
err = v4l2_async_notifier_register(&pcdev->v4l2_dev, &pcdev->notifier);
if (err)
goto exit_free_clk;
return 0;
exit_free_clk:
v4l2_clk_unregister(pcdev->mclk_clk);
exit_free_v4l2dev:
v4l2_device_unregister(&pcdev->v4l2_dev);
exit_free_dma:
dma_release_channel(pcdev->dma_chans[2]);
exit_free_dma_u:
......@@ -1733,15 +2010,15 @@ static int pxa_camera_probe(struct platform_device *pdev)
static int pxa_camera_remove(struct platform_device *pdev)
{
struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
struct pxa_camera_dev *pcdev = container_of(soc_host,
struct pxa_camera_dev, soc_host);
struct pxa_camera_dev *pcdev = dev_get_drvdata(&pdev->dev);
pxa_camera_deactivate(pcdev);
dma_release_channel(pcdev->dma_chans[0]);
dma_release_channel(pcdev->dma_chans[1]);
dma_release_channel(pcdev->dma_chans[2]);
soc_camera_host_unregister(soc_host);
v4l2_clk_unregister(pcdev->mclk_clk);
v4l2_device_unregister(&pcdev->v4l2_dev);
dev_info(&pdev->dev, "PXA Camera driver unloaded\n");
......
include/linux/platform_data/media/camera-pxa.h
View file @ 283e4a82
......@@ -37,6 +37,8 @@
struct pxacamera_platform_data {
unsigned long flags;
unsigned long mclk_10khz;
int sensor_i2c_adapter_id;
int sensor_i2c_address;
};
extern void pxa_set_camera_info(struct pxacamera_platform_data *);
......
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