// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
|
* Copyright (C) 2008-2009 Texas Instruments Inc
|
*
|
* Driver name : VPFE Capture driver
|
* VPFE Capture driver allows applications to capture and stream video
|
* frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
|
* TVP5146 or Raw Bayer RGB image data from an image sensor
|
* such as Microns' MT9T001, MT9T031 etc.
|
*
|
* These SoCs have, in common, a Video Processing Subsystem (VPSS) that
|
* consists of a Video Processing Front End (VPFE) for capturing
|
* video/raw image data and Video Processing Back End (VPBE) for displaying
|
* YUV data through an in-built analog encoder or Digital LCD port. This
|
* driver is for capture through VPFE. A typical EVM using these SoCs have
|
* following high level configuration.
|
*
|
* decoder(TVP5146/ YUV/
|
* MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
|
* data input | |
|
* V |
|
* SDRAM |
|
* V
|
* Image Processor
|
* |
|
* V
|
* SDRAM
|
* The data flow happens from a decoder connected to the VPFE over a
|
* YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
|
* and to the input of VPFE through an optional MUX (if more inputs are
|
* to be interfaced on the EVM). The input data is first passed through
|
* CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
|
* does very little or no processing on YUV data and does pre-process Raw
|
* Bayer RGB data through modules such as Defect Pixel Correction (DFC)
|
* Color Space Conversion (CSC), data gain/offset etc. After this, data
|
* can be written to SDRAM or can be connected to the image processing
|
* block such as IPIPE (on DM355 only).
|
*
|
* Features supported
|
* - MMAP IO
|
* - Capture using TVP5146 over BT.656
|
* - support for interfacing decoders using sub device model
|
* - Work with DM355 or DM6446 CCDC to do Raw Bayer RGB/YUV
|
* data capture to SDRAM.
|
* TODO list
|
* - Support multiple REQBUF after open
|
* - Support for de-allocating buffers through REQBUF
|
* - Support for Raw Bayer RGB capture
|
* - Support for chaining Image Processor
|
* - Support for static allocation of buffers
|
* - Support for USERPTR IO
|
* - Support for STREAMON before QBUF
|
* - Support for control ioctls
|
*/
|
#include <linux/module.h>
|
#include <linux/slab.h>
|
#include <linux/init.h>
|
#include <linux/platform_device.h>
|
#include <linux/interrupt.h>
|
#include <media/v4l2-common.h>
|
#include <linux/io.h>
|
#include <media/davinci/vpfe_capture.h>
|
#include "ccdc_hw_device.h"
|
|
static int debug;
|
static u32 numbuffers = 3;
|
static u32 bufsize = (720 * 576 * 2);
|
|
module_param(numbuffers, uint, S_IRUGO);
|
module_param(bufsize, uint, S_IRUGO);
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(numbuffers, "buffer count (default:3)");
|
MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)");
|
MODULE_PARM_DESC(debug, "Debug level 0-1");
|
|
MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
|
MODULE_LICENSE("GPL");
|
MODULE_AUTHOR("Texas Instruments");
|
|
/* standard information */
|
struct vpfe_standard {
|
v4l2_std_id std_id;
|
unsigned int width;
|
unsigned int height;
|
struct v4l2_fract pixelaspect;
|
/* 0 - progressive, 1 - interlaced */
|
int frame_format;
|
};
|
|
/* ccdc configuration */
|
struct ccdc_config {
|
/* This make sure vpfe is probed and ready to go */
|
int vpfe_probed;
|
/* name of ccdc device */
|
char name[32];
|
};
|
|
/* data structures */
|
static struct vpfe_config_params config_params = {
|
.min_numbuffers = 3,
|
.numbuffers = 3,
|
.min_bufsize = 720 * 480 * 2,
|
.device_bufsize = 720 * 576 * 2,
|
};
|
|
/* ccdc device registered */
|
static const struct ccdc_hw_device *ccdc_dev;
|
/* lock for accessing ccdc information */
|
static DEFINE_MUTEX(ccdc_lock);
|
/* ccdc configuration */
|
static struct ccdc_config *ccdc_cfg;
|
|
static const struct vpfe_standard vpfe_standards[] = {
|
{V4L2_STD_525_60, 720, 480, {11, 10}, 1},
|
{V4L2_STD_625_50, 720, 576, {54, 59}, 1},
|
};
|
|
/* Used when raw Bayer image from ccdc is directly captured to SDRAM */
|
static const struct vpfe_pixel_format vpfe_pix_fmts[] = {
|
{
|
.pixelformat = V4L2_PIX_FMT_SBGGR8,
|
.bpp = 1,
|
},
|
{
|
.pixelformat = V4L2_PIX_FMT_SBGGR16,
|
.bpp = 2,
|
},
|
{
|
.pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
|
.bpp = 1,
|
},
|
{
|
.pixelformat = V4L2_PIX_FMT_UYVY,
|
.bpp = 2,
|
},
|
{
|
.pixelformat = V4L2_PIX_FMT_YUYV,
|
.bpp = 2,
|
},
|
{
|
.pixelformat = V4L2_PIX_FMT_NV12,
|
.bpp = 1,
|
},
|
};
|
|
/*
|
* vpfe_lookup_pix_format()
|
* lookup an entry in the vpfe pix format table based on pix_format
|
*/
|
static const struct vpfe_pixel_format *vpfe_lookup_pix_format(u32 pix_format)
|
{
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(vpfe_pix_fmts); i++) {
|
if (pix_format == vpfe_pix_fmts[i].pixelformat)
|
return &vpfe_pix_fmts[i];
|
}
|
return NULL;
|
}
|
|
/*
|
* vpfe_register_ccdc_device. CCDC module calls this to
|
* register with vpfe capture
|
*/
|
int vpfe_register_ccdc_device(const struct ccdc_hw_device *dev)
|
{
|
int ret = 0;
|
printk(KERN_NOTICE "vpfe_register_ccdc_device: %s\n", dev->name);
|
|
if (!dev->hw_ops.open ||
|
!dev->hw_ops.enable ||
|
!dev->hw_ops.set_hw_if_params ||
|
!dev->hw_ops.configure ||
|
!dev->hw_ops.set_buftype ||
|
!dev->hw_ops.get_buftype ||
|
!dev->hw_ops.enum_pix ||
|
!dev->hw_ops.set_frame_format ||
|
!dev->hw_ops.get_frame_format ||
|
!dev->hw_ops.get_pixel_format ||
|
!dev->hw_ops.set_pixel_format ||
|
!dev->hw_ops.set_image_window ||
|
!dev->hw_ops.get_image_window ||
|
!dev->hw_ops.get_line_length ||
|
!dev->hw_ops.getfid)
|
return -EINVAL;
|
|
mutex_lock(&ccdc_lock);
|
if (!ccdc_cfg) {
|
/*
|
* TODO. Will this ever happen? if so, we need to fix it.
|
* Proabably we need to add the request to a linked list and
|
* walk through it during vpfe probe
|
*/
|
printk(KERN_ERR "vpfe capture not initialized\n");
|
ret = -EFAULT;
|
goto unlock;
|
}
|
|
if (strcmp(dev->name, ccdc_cfg->name)) {
|
/* ignore this ccdc */
|
ret = -EINVAL;
|
goto unlock;
|
}
|
|
if (ccdc_dev) {
|
printk(KERN_ERR "ccdc already registered\n");
|
ret = -EINVAL;
|
goto unlock;
|
}
|
|
ccdc_dev = dev;
|
unlock:
|
mutex_unlock(&ccdc_lock);
|
return ret;
|
}
|
EXPORT_SYMBOL(vpfe_register_ccdc_device);
|
|
/*
|
* vpfe_unregister_ccdc_device. CCDC module calls this to
|
* unregister with vpfe capture
|
*/
|
void vpfe_unregister_ccdc_device(const struct ccdc_hw_device *dev)
|
{
|
if (!dev) {
|
printk(KERN_ERR "invalid ccdc device ptr\n");
|
return;
|
}
|
|
printk(KERN_NOTICE "vpfe_unregister_ccdc_device, dev->name = %s\n",
|
dev->name);
|
|
if (strcmp(dev->name, ccdc_cfg->name)) {
|
/* ignore this ccdc */
|
return;
|
}
|
|
mutex_lock(&ccdc_lock);
|
ccdc_dev = NULL;
|
mutex_unlock(&ccdc_lock);
|
}
|
EXPORT_SYMBOL(vpfe_unregister_ccdc_device);
|
|
/*
|
* vpfe_config_ccdc_image_format()
|
* For a pix format, configure ccdc to setup the capture
|
*/
|
static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe_dev)
|
{
|
enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
|
int ret = 0;
|
|
if (ccdc_dev->hw_ops.set_pixel_format(
|
vpfe_dev->fmt.fmt.pix.pixelformat) < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"couldn't set pix format in ccdc\n");
|
return -EINVAL;
|
}
|
/* configure the image window */
|
ccdc_dev->hw_ops.set_image_window(&vpfe_dev->crop);
|
|
switch (vpfe_dev->fmt.fmt.pix.field) {
|
case V4L2_FIELD_INTERLACED:
|
/* do nothing, since it is default */
|
ret = ccdc_dev->hw_ops.set_buftype(
|
CCDC_BUFTYPE_FLD_INTERLEAVED);
|
break;
|
case V4L2_FIELD_NONE:
|
frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
|
/* buffer type only applicable for interlaced scan */
|
break;
|
case V4L2_FIELD_SEQ_TB:
|
ret = ccdc_dev->hw_ops.set_buftype(
|
CCDC_BUFTYPE_FLD_SEPARATED);
|
break;
|
default:
|
return -EINVAL;
|
}
|
|
/* set the frame format */
|
if (!ret)
|
ret = ccdc_dev->hw_ops.set_frame_format(frm_fmt);
|
return ret;
|
}
|
/*
|
* vpfe_config_image_format()
|
* For a given standard, this functions sets up the default
|
* pix format & crop values in the vpfe device and ccdc. It first
|
* starts with defaults based values from the standard table.
|
* It then checks if sub device supports get_fmt and then override the
|
* values based on that.Sets crop values to match with scan resolution
|
* starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
|
* values in ccdc
|
*/
|
static int vpfe_config_image_format(struct vpfe_device *vpfe_dev,
|
v4l2_std_id std_id)
|
{
|
struct vpfe_subdev_info *sdinfo = vpfe_dev->current_subdev;
|
struct v4l2_subdev_format fmt = {
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
};
|
struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
|
struct v4l2_pix_format *pix = &vpfe_dev->fmt.fmt.pix;
|
int i, ret;
|
|
for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
|
if (vpfe_standards[i].std_id & std_id) {
|
vpfe_dev->std_info.active_pixels =
|
vpfe_standards[i].width;
|
vpfe_dev->std_info.active_lines =
|
vpfe_standards[i].height;
|
vpfe_dev->std_info.frame_format =
|
vpfe_standards[i].frame_format;
|
vpfe_dev->std_index = i;
|
break;
|
}
|
}
|
|
if (i == ARRAY_SIZE(vpfe_standards)) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "standard not supported\n");
|
return -EINVAL;
|
}
|
|
vpfe_dev->crop.top = 0;
|
vpfe_dev->crop.left = 0;
|
vpfe_dev->crop.width = vpfe_dev->std_info.active_pixels;
|
vpfe_dev->crop.height = vpfe_dev->std_info.active_lines;
|
pix->width = vpfe_dev->crop.width;
|
pix->height = vpfe_dev->crop.height;
|
|
/* first field and frame format based on standard frame format */
|
if (vpfe_dev->std_info.frame_format) {
|
pix->field = V4L2_FIELD_INTERLACED;
|
/* assume V4L2_PIX_FMT_UYVY as default */
|
pix->pixelformat = V4L2_PIX_FMT_UYVY;
|
v4l2_fill_mbus_format(mbus_fmt, pix,
|
MEDIA_BUS_FMT_YUYV10_2X10);
|
} else {
|
pix->field = V4L2_FIELD_NONE;
|
/* assume V4L2_PIX_FMT_SBGGR8 */
|
pix->pixelformat = V4L2_PIX_FMT_SBGGR8;
|
v4l2_fill_mbus_format(mbus_fmt, pix,
|
MEDIA_BUS_FMT_SBGGR8_1X8);
|
}
|
|
/* if sub device supports get_fmt, override the defaults */
|
ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
|
sdinfo->grp_id, pad, get_fmt, NULL, &fmt);
|
|
if (ret && ret != -ENOIOCTLCMD) {
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"error in getting get_fmt from sub device\n");
|
return ret;
|
}
|
v4l2_fill_pix_format(pix, mbus_fmt);
|
pix->bytesperline = pix->width * 2;
|
pix->sizeimage = pix->bytesperline * pix->height;
|
|
/* Sets the values in CCDC */
|
ret = vpfe_config_ccdc_image_format(vpfe_dev);
|
if (ret)
|
return ret;
|
|
/* Update the values of sizeimage and bytesperline */
|
pix->bytesperline = ccdc_dev->hw_ops.get_line_length();
|
pix->sizeimage = pix->bytesperline * pix->height;
|
|
return 0;
|
}
|
|
static int vpfe_initialize_device(struct vpfe_device *vpfe_dev)
|
{
|
int ret;
|
|
/* set first input of current subdevice as the current input */
|
vpfe_dev->current_input = 0;
|
|
/* set default standard */
|
vpfe_dev->std_index = 0;
|
|
/* Configure the default format information */
|
ret = vpfe_config_image_format(vpfe_dev,
|
vpfe_standards[vpfe_dev->std_index].std_id);
|
if (ret)
|
return ret;
|
|
/* now open the ccdc device to initialize it */
|
mutex_lock(&ccdc_lock);
|
if (!ccdc_dev) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "ccdc device not registered\n");
|
ret = -ENODEV;
|
goto unlock;
|
}
|
|
if (!try_module_get(ccdc_dev->owner)) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Couldn't lock ccdc module\n");
|
ret = -ENODEV;
|
goto unlock;
|
}
|
ret = ccdc_dev->hw_ops.open(vpfe_dev->pdev);
|
if (!ret)
|
vpfe_dev->initialized = 1;
|
|
/* Clear all VPFE/CCDC interrupts */
|
if (vpfe_dev->cfg->clr_intr)
|
vpfe_dev->cfg->clr_intr(-1);
|
|
unlock:
|
mutex_unlock(&ccdc_lock);
|
return ret;
|
}
|
|
/*
|
* vpfe_open : It creates object of file handle structure and
|
* stores it in private_data member of filepointer
|
*/
|
static int vpfe_open(struct file *file)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct video_device *vdev = video_devdata(file);
|
struct vpfe_fh *fh;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_open\n");
|
|
if (!vpfe_dev->cfg->num_subdevs) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "No decoder registered\n");
|
return -ENODEV;
|
}
|
|
/* Allocate memory for the file handle object */
|
fh = kmalloc(sizeof(*fh), GFP_KERNEL);
|
if (!fh)
|
return -ENOMEM;
|
|
/* store pointer to fh in private_data member of file */
|
file->private_data = fh;
|
fh->vpfe_dev = vpfe_dev;
|
v4l2_fh_init(&fh->fh, vdev);
|
mutex_lock(&vpfe_dev->lock);
|
/* If decoder is not initialized. initialize it */
|
if (!vpfe_dev->initialized) {
|
if (vpfe_initialize_device(vpfe_dev)) {
|
mutex_unlock(&vpfe_dev->lock);
|
v4l2_fh_exit(&fh->fh);
|
kfree(fh);
|
return -ENODEV;
|
}
|
}
|
/* Increment device usrs counter */
|
vpfe_dev->usrs++;
|
/* Set io_allowed member to false */
|
fh->io_allowed = 0;
|
v4l2_fh_add(&fh->fh);
|
mutex_unlock(&vpfe_dev->lock);
|
return 0;
|
}
|
|
static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
|
{
|
unsigned long addr;
|
|
vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
|
struct videobuf_buffer, queue);
|
list_del(&vpfe_dev->next_frm->queue);
|
vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
|
addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
|
|
ccdc_dev->hw_ops.setfbaddr(addr);
|
}
|
|
static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
|
{
|
unsigned long addr;
|
|
addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
|
addr += vpfe_dev->field_off;
|
ccdc_dev->hw_ops.setfbaddr(addr);
|
}
|
|
static void vpfe_process_buffer_complete(struct vpfe_device *vpfe_dev)
|
{
|
vpfe_dev->cur_frm->ts = ktime_get_ns();
|
vpfe_dev->cur_frm->state = VIDEOBUF_DONE;
|
vpfe_dev->cur_frm->size = vpfe_dev->fmt.fmt.pix.sizeimage;
|
wake_up_interruptible(&vpfe_dev->cur_frm->done);
|
vpfe_dev->cur_frm = vpfe_dev->next_frm;
|
}
|
|
/* ISR for VINT0*/
|
static irqreturn_t vpfe_isr(int irq, void *dev_id)
|
{
|
struct vpfe_device *vpfe_dev = dev_id;
|
enum v4l2_field field;
|
int fid;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
|
field = vpfe_dev->fmt.fmt.pix.field;
|
|
/* if streaming not started, don't do anything */
|
if (!vpfe_dev->started)
|
goto clear_intr;
|
|
/* only for 6446 this will be applicable */
|
if (ccdc_dev->hw_ops.reset)
|
ccdc_dev->hw_ops.reset();
|
|
if (field == V4L2_FIELD_NONE) {
|
/* handle progressive frame capture */
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
|
"frame format is progressive...\n");
|
if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
|
vpfe_process_buffer_complete(vpfe_dev);
|
goto clear_intr;
|
}
|
|
/* interlaced or TB capture check which field we are in hardware */
|
fid = ccdc_dev->hw_ops.getfid();
|
|
/* switch the software maintained field id */
|
vpfe_dev->field_id ^= 1;
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "field id = %x:%x.\n",
|
fid, vpfe_dev->field_id);
|
if (fid == vpfe_dev->field_id) {
|
/* we are in-sync here,continue */
|
if (fid == 0) {
|
/*
|
* One frame is just being captured. If the next frame
|
* is available, release the current frame and move on
|
*/
|
if (vpfe_dev->cur_frm != vpfe_dev->next_frm)
|
vpfe_process_buffer_complete(vpfe_dev);
|
/*
|
* based on whether the two fields are stored
|
* interleavely or separately in memory, reconfigure
|
* the CCDC memory address
|
*/
|
if (field == V4L2_FIELD_SEQ_TB)
|
vpfe_schedule_bottom_field(vpfe_dev);
|
goto clear_intr;
|
}
|
/*
|
* if one field is just being captured configure
|
* the next frame get the next frame from the empty
|
* queue if no frame is available hold on to the
|
* current buffer
|
*/
|
spin_lock(&vpfe_dev->dma_queue_lock);
|
if (!list_empty(&vpfe_dev->dma_queue) &&
|
vpfe_dev->cur_frm == vpfe_dev->next_frm)
|
vpfe_schedule_next_buffer(vpfe_dev);
|
spin_unlock(&vpfe_dev->dma_queue_lock);
|
} else if (fid == 0) {
|
/*
|
* out of sync. Recover from any hardware out-of-sync.
|
* May loose one frame
|
*/
|
vpfe_dev->field_id = fid;
|
}
|
clear_intr:
|
if (vpfe_dev->cfg->clr_intr)
|
vpfe_dev->cfg->clr_intr(irq);
|
|
return IRQ_HANDLED;
|
}
|
|
/* vdint1_isr - isr handler for VINT1 interrupt */
|
static irqreturn_t vdint1_isr(int irq, void *dev_id)
|
{
|
struct vpfe_device *vpfe_dev = dev_id;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nInside vdint1_isr...\n");
|
|
/* if streaming not started, don't do anything */
|
if (!vpfe_dev->started) {
|
if (vpfe_dev->cfg->clr_intr)
|
vpfe_dev->cfg->clr_intr(irq);
|
return IRQ_HANDLED;
|
}
|
|
spin_lock(&vpfe_dev->dma_queue_lock);
|
if ((vpfe_dev->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
|
!list_empty(&vpfe_dev->dma_queue) &&
|
vpfe_dev->cur_frm == vpfe_dev->next_frm)
|
vpfe_schedule_next_buffer(vpfe_dev);
|
spin_unlock(&vpfe_dev->dma_queue_lock);
|
|
if (vpfe_dev->cfg->clr_intr)
|
vpfe_dev->cfg->clr_intr(irq);
|
|
return IRQ_HANDLED;
|
}
|
|
static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
|
{
|
enum ccdc_frmfmt frame_format;
|
|
frame_format = ccdc_dev->hw_ops.get_frame_format();
|
if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
|
free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
|
}
|
|
static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
|
{
|
enum ccdc_frmfmt frame_format;
|
|
frame_format = ccdc_dev->hw_ops.get_frame_format();
|
if (frame_format == CCDC_FRMFMT_PROGRESSIVE) {
|
return request_irq(vpfe_dev->ccdc_irq1, vdint1_isr,
|
0, "vpfe_capture1",
|
vpfe_dev);
|
}
|
return 0;
|
}
|
|
/* vpfe_stop_ccdc_capture: stop streaming in ccdc/isif */
|
static void vpfe_stop_ccdc_capture(struct vpfe_device *vpfe_dev)
|
{
|
vpfe_dev->started = 0;
|
ccdc_dev->hw_ops.enable(0);
|
if (ccdc_dev->hw_ops.enable_out_to_sdram)
|
ccdc_dev->hw_ops.enable_out_to_sdram(0);
|
}
|
|
/*
|
* vpfe_release : This function deletes buffer queue, frees the
|
* buffers and the vpfe file handle
|
*/
|
static int vpfe_release(struct file *file)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_fh *fh = file->private_data;
|
struct vpfe_subdev_info *sdinfo;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n");
|
|
/* Get the device lock */
|
mutex_lock(&vpfe_dev->lock);
|
/* if this instance is doing IO */
|
if (fh->io_allowed) {
|
if (vpfe_dev->started) {
|
sdinfo = vpfe_dev->current_subdev;
|
ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev,
|
sdinfo->grp_id,
|
video, s_stream, 0);
|
if (ret && (ret != -ENOIOCTLCMD))
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"stream off failed in subdev\n");
|
vpfe_stop_ccdc_capture(vpfe_dev);
|
vpfe_detach_irq(vpfe_dev);
|
videobuf_streamoff(&vpfe_dev->buffer_queue);
|
}
|
vpfe_dev->io_usrs = 0;
|
vpfe_dev->numbuffers = config_params.numbuffers;
|
videobuf_stop(&vpfe_dev->buffer_queue);
|
videobuf_mmap_free(&vpfe_dev->buffer_queue);
|
}
|
|
/* Decrement device usrs counter */
|
vpfe_dev->usrs--;
|
v4l2_fh_del(&fh->fh);
|
v4l2_fh_exit(&fh->fh);
|
/* If this is the last file handle */
|
if (!vpfe_dev->usrs) {
|
vpfe_dev->initialized = 0;
|
if (ccdc_dev->hw_ops.close)
|
ccdc_dev->hw_ops.close(vpfe_dev->pdev);
|
module_put(ccdc_dev->owner);
|
}
|
mutex_unlock(&vpfe_dev->lock);
|
file->private_data = NULL;
|
/* Free memory allocated to file handle object */
|
kfree(fh);
|
return 0;
|
}
|
|
/*
|
* vpfe_mmap : It is used to map kernel space buffers
|
* into user spaces
|
*/
|
static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
|
{
|
/* Get the device object and file handle object */
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n");
|
|
return videobuf_mmap_mapper(&vpfe_dev->buffer_queue, vma);
|
}
|
|
/*
|
* vpfe_poll: It is used for select/poll system call
|
*/
|
static __poll_t vpfe_poll(struct file *file, poll_table *wait)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n");
|
|
if (vpfe_dev->started)
|
return videobuf_poll_stream(file,
|
&vpfe_dev->buffer_queue, wait);
|
return 0;
|
}
|
|
/* vpfe capture driver file operations */
|
static const struct v4l2_file_operations vpfe_fops = {
|
.owner = THIS_MODULE,
|
.open = vpfe_open,
|
.release = vpfe_release,
|
.unlocked_ioctl = video_ioctl2,
|
.mmap = vpfe_mmap,
|
.poll = vpfe_poll
|
};
|
|
/*
|
* vpfe_check_format()
|
* This function adjust the input pixel format as per hardware
|
* capabilities and update the same in pixfmt.
|
* Following algorithm used :-
|
*
|
* If given pixformat is not in the vpfe list of pix formats or not
|
* supported by the hardware, current value of pixformat in the device
|
* is used
|
* If given field is not supported, then current field is used. If field
|
* is different from current, then it is matched with that from sub device.
|
* Minimum height is 2 lines for interlaced or tb field and 1 line for
|
* progressive. Maximum height is clamped to active active lines of scan
|
* Minimum width is 32 bytes in memory and width is clamped to active
|
* pixels of scan.
|
* bytesperline is a multiple of 32.
|
*/
|
static const struct vpfe_pixel_format *
|
vpfe_check_format(struct vpfe_device *vpfe_dev,
|
struct v4l2_pix_format *pixfmt)
|
{
|
u32 min_height = 1, min_width = 32, max_width, max_height;
|
const struct vpfe_pixel_format *vpfe_pix_fmt;
|
u32 pix;
|
int temp, found;
|
|
vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
|
if (!vpfe_pix_fmt) {
|
/*
|
* use current pixel format in the vpfe device. We
|
* will find this pix format in the table
|
*/
|
pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
|
vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
|
}
|
|
/* check if hw supports it */
|
temp = 0;
|
found = 0;
|
while (ccdc_dev->hw_ops.enum_pix(&pix, temp) >= 0) {
|
if (vpfe_pix_fmt->pixelformat == pix) {
|
found = 1;
|
break;
|
}
|
temp++;
|
}
|
|
if (!found) {
|
/* use current pixel format */
|
pixfmt->pixelformat = vpfe_dev->fmt.fmt.pix.pixelformat;
|
/*
|
* Since this is currently used in the vpfe device, we
|
* will find this pix format in the table
|
*/
|
vpfe_pix_fmt = vpfe_lookup_pix_format(pixfmt->pixelformat);
|
}
|
|
/* check what field format is supported */
|
if (pixfmt->field == V4L2_FIELD_ANY) {
|
/* if field is any, use current value as default */
|
pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
|
}
|
|
/*
|
* if field is not same as current field in the vpfe device
|
* try matching the field with the sub device field
|
*/
|
if (vpfe_dev->fmt.fmt.pix.field != pixfmt->field) {
|
/*
|
* If field value is not in the supported fields, use current
|
* field used in the device as default
|
*/
|
switch (pixfmt->field) {
|
case V4L2_FIELD_INTERLACED:
|
case V4L2_FIELD_SEQ_TB:
|
/* if sub device is supporting progressive, use that */
|
if (!vpfe_dev->std_info.frame_format)
|
pixfmt->field = V4L2_FIELD_NONE;
|
break;
|
case V4L2_FIELD_NONE:
|
if (vpfe_dev->std_info.frame_format)
|
pixfmt->field = V4L2_FIELD_INTERLACED;
|
break;
|
|
default:
|
/* use current field as default */
|
pixfmt->field = vpfe_dev->fmt.fmt.pix.field;
|
break;
|
}
|
}
|
|
/* Now adjust image resolutions supported */
|
if (pixfmt->field == V4L2_FIELD_INTERLACED ||
|
pixfmt->field == V4L2_FIELD_SEQ_TB)
|
min_height = 2;
|
|
max_width = vpfe_dev->std_info.active_pixels;
|
max_height = vpfe_dev->std_info.active_lines;
|
min_width /= vpfe_pix_fmt->bpp;
|
|
v4l2_info(&vpfe_dev->v4l2_dev, "width = %d, height = %d, bpp = %d\n",
|
pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp);
|
|
pixfmt->width = clamp((pixfmt->width), min_width, max_width);
|
pixfmt->height = clamp((pixfmt->height), min_height, max_height);
|
|
/* If interlaced, adjust height to be a multiple of 2 */
|
if (pixfmt->field == V4L2_FIELD_INTERLACED)
|
pixfmt->height &= (~1);
|
/*
|
* recalculate bytesperline and sizeimage since width
|
* and height might have changed
|
*/
|
pixfmt->bytesperline = (((pixfmt->width * vpfe_pix_fmt->bpp) + 31)
|
& ~31);
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
|
pixfmt->sizeimage =
|
pixfmt->bytesperline * pixfmt->height +
|
((pixfmt->bytesperline * pixfmt->height) >> 1);
|
else
|
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
|
|
v4l2_info(&vpfe_dev->v4l2_dev, "adjusted width = %d, height = %d, bpp = %d, bytesperline = %d, sizeimage = %d\n",
|
pixfmt->width, pixfmt->height, vpfe_pix_fmt->bpp,
|
pixfmt->bytesperline, pixfmt->sizeimage);
|
return vpfe_pix_fmt;
|
}
|
|
static int vpfe_querycap(struct file *file, void *priv,
|
struct v4l2_capability *cap)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n");
|
|
strscpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
|
strscpy(cap->bus_info, "VPFE", sizeof(cap->bus_info));
|
strscpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card));
|
return 0;
|
}
|
|
static int vpfe_g_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt_vid_cap\n");
|
/* Fill in the information about format */
|
*fmt = vpfe_dev->fmt;
|
return 0;
|
}
|
|
static int vpfe_enum_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_fmtdesc *fmt)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
const struct vpfe_pixel_format *pix_fmt;
|
u32 pix;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt_vid_cap\n");
|
|
if (ccdc_dev->hw_ops.enum_pix(&pix, fmt->index) < 0)
|
return -EINVAL;
|
|
/* Fill in the information about format */
|
pix_fmt = vpfe_lookup_pix_format(pix);
|
if (pix_fmt) {
|
fmt->pixelformat = pix_fmt->pixelformat;
|
return 0;
|
}
|
return -EINVAL;
|
}
|
|
static int vpfe_s_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
const struct vpfe_pixel_format *pix_fmts;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt_vid_cap\n");
|
|
/* If streaming is started, return error */
|
if (vpfe_dev->started) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n");
|
return -EBUSY;
|
}
|
|
/* Check for valid frame format */
|
pix_fmts = vpfe_check_format(vpfe_dev, &fmt->fmt.pix);
|
if (!pix_fmts)
|
return -EINVAL;
|
|
/* store the pixel format in the device object */
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
return ret;
|
|
/* First detach any IRQ if currently attached */
|
vpfe_detach_irq(vpfe_dev);
|
vpfe_dev->fmt = *fmt;
|
/* set image capture parameters in the ccdc */
|
ret = vpfe_config_ccdc_image_format(vpfe_dev);
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
static int vpfe_try_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
const struct vpfe_pixel_format *pix_fmts;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt_vid_cap\n");
|
|
pix_fmts = vpfe_check_format(vpfe_dev, &f->fmt.pix);
|
if (!pix_fmts)
|
return -EINVAL;
|
return 0;
|
}
|
|
/*
|
* vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
|
* given app input index
|
*/
|
static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe_dev,
|
int *subdev_index,
|
int *subdev_input_index,
|
int app_input_index)
|
{
|
struct vpfe_config *cfg = vpfe_dev->cfg;
|
struct vpfe_subdev_info *sdinfo;
|
int i, j = 0;
|
|
for (i = 0; i < cfg->num_subdevs; i++) {
|
sdinfo = &cfg->sub_devs[i];
|
if (app_input_index < (j + sdinfo->num_inputs)) {
|
*subdev_index = i;
|
*subdev_input_index = app_input_index - j;
|
return 0;
|
}
|
j += sdinfo->num_inputs;
|
}
|
return -EINVAL;
|
}
|
|
/*
|
* vpfe_get_app_input - Get app input index for a given subdev input index
|
* driver stores the input index of the current sub device and translate it
|
* when application request the current input
|
*/
|
static int vpfe_get_app_input_index(struct vpfe_device *vpfe_dev,
|
int *app_input_index)
|
{
|
struct vpfe_config *cfg = vpfe_dev->cfg;
|
struct vpfe_subdev_info *sdinfo;
|
int i, j = 0;
|
|
for (i = 0; i < cfg->num_subdevs; i++) {
|
sdinfo = &cfg->sub_devs[i];
|
if (!strcmp(sdinfo->name, vpfe_dev->current_subdev->name)) {
|
if (vpfe_dev->current_input >= sdinfo->num_inputs)
|
return -1;
|
*app_input_index = j + vpfe_dev->current_input;
|
return 0;
|
}
|
j += sdinfo->num_inputs;
|
}
|
return -EINVAL;
|
}
|
|
static int vpfe_enum_input(struct file *file, void *priv,
|
struct v4l2_input *inp)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_subdev_info *sdinfo;
|
int subdev, index ;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n");
|
|
if (vpfe_get_subdev_input_index(vpfe_dev,
|
&subdev,
|
&index,
|
inp->index) < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "input information not found for the subdev\n");
|
return -EINVAL;
|
}
|
sdinfo = &vpfe_dev->cfg->sub_devs[subdev];
|
*inp = sdinfo->inputs[index];
|
return 0;
|
}
|
|
static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n");
|
|
return vpfe_get_app_input_index(vpfe_dev, index);
|
}
|
|
|
static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct v4l2_subdev *sd;
|
struct vpfe_subdev_info *sdinfo;
|
int subdev_index, inp_index;
|
struct vpfe_route *route;
|
u32 input, output;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n");
|
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
return ret;
|
|
/*
|
* If streaming is started return device busy
|
* error
|
*/
|
if (vpfe_dev->started) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n");
|
ret = -EBUSY;
|
goto unlock_out;
|
}
|
ret = vpfe_get_subdev_input_index(vpfe_dev,
|
&subdev_index,
|
&inp_index,
|
index);
|
if (ret < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "invalid input index\n");
|
goto unlock_out;
|
}
|
|
sdinfo = &vpfe_dev->cfg->sub_devs[subdev_index];
|
sd = vpfe_dev->sd[subdev_index];
|
route = &sdinfo->routes[inp_index];
|
if (route && sdinfo->can_route) {
|
input = route->input;
|
output = route->output;
|
} else {
|
input = 0;
|
output = 0;
|
}
|
|
if (sd)
|
ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
|
|
if (ret) {
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"vpfe_doioctl:error in setting input in decoder\n");
|
ret = -EINVAL;
|
goto unlock_out;
|
}
|
vpfe_dev->current_subdev = sdinfo;
|
if (sd)
|
vpfe_dev->v4l2_dev.ctrl_handler = sd->ctrl_handler;
|
vpfe_dev->current_input = index;
|
vpfe_dev->std_index = 0;
|
|
/* set the bus/interface parameter for the sub device in ccdc */
|
ret = ccdc_dev->hw_ops.set_hw_if_params(&sdinfo->ccdc_if_params);
|
if (ret)
|
goto unlock_out;
|
|
/* set the default image parameters in the device */
|
ret = vpfe_config_image_format(vpfe_dev,
|
vpfe_standards[vpfe_dev->std_index].std_id);
|
unlock_out:
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_subdev_info *sdinfo;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n");
|
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
sdinfo = vpfe_dev->current_subdev;
|
if (ret)
|
return ret;
|
/* Call querystd function of decoder device */
|
ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
|
video, querystd, std_id);
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_subdev_info *sdinfo;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n");
|
|
/* Call decoder driver function to set the standard */
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
return ret;
|
|
sdinfo = vpfe_dev->current_subdev;
|
/* If streaming is started, return device busy error */
|
if (vpfe_dev->started) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n");
|
ret = -EBUSY;
|
goto unlock_out;
|
}
|
|
ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
|
video, s_std, std_id);
|
if (ret < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n");
|
goto unlock_out;
|
}
|
ret = vpfe_config_image_format(vpfe_dev, std_id);
|
|
unlock_out:
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n");
|
|
*std_id = vpfe_standards[vpfe_dev->std_index].std_id;
|
return 0;
|
}
|
/*
|
* Videobuf operations
|
*/
|
static int vpfe_videobuf_setup(struct videobuf_queue *vq,
|
unsigned int *count,
|
unsigned int *size)
|
{
|
struct vpfe_fh *fh = vq->priv_data;
|
struct vpfe_device *vpfe_dev = fh->vpfe_dev;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
|
*size = vpfe_dev->fmt.fmt.pix.sizeimage;
|
if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
|
vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
|
*size = config_params.device_bufsize;
|
|
if (*count < config_params.min_numbuffers)
|
*count = config_params.min_numbuffers;
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
|
"count=%d, size=%d\n", *count, *size);
|
return 0;
|
}
|
|
static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
|
struct videobuf_buffer *vb,
|
enum v4l2_field field)
|
{
|
struct vpfe_fh *fh = vq->priv_data;
|
struct vpfe_device *vpfe_dev = fh->vpfe_dev;
|
unsigned long addr;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n");
|
|
/* If buffer is not initialized, initialize it */
|
if (VIDEOBUF_NEEDS_INIT == vb->state) {
|
vb->width = vpfe_dev->fmt.fmt.pix.width;
|
vb->height = vpfe_dev->fmt.fmt.pix.height;
|
vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
|
vb->field = field;
|
|
ret = videobuf_iolock(vq, vb, NULL);
|
if (ret < 0)
|
return ret;
|
|
addr = videobuf_to_dma_contig(vb);
|
/* Make sure user addresses are aligned to 32 bytes */
|
if (!ALIGN(addr, 32))
|
return -EINVAL;
|
|
vb->state = VIDEOBUF_PREPARED;
|
}
|
return 0;
|
}
|
|
static void vpfe_videobuf_queue(struct videobuf_queue *vq,
|
struct videobuf_buffer *vb)
|
{
|
/* Get the file handle object and device object */
|
struct vpfe_fh *fh = vq->priv_data;
|
struct vpfe_device *vpfe_dev = fh->vpfe_dev;
|
unsigned long flags;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue\n");
|
|
/* add the buffer to the DMA queue */
|
spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
|
list_add_tail(&vb->queue, &vpfe_dev->dma_queue);
|
spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
|
|
/* Change state of the buffer */
|
vb->state = VIDEOBUF_QUEUED;
|
}
|
|
static void vpfe_videobuf_release(struct videobuf_queue *vq,
|
struct videobuf_buffer *vb)
|
{
|
struct vpfe_fh *fh = vq->priv_data;
|
struct vpfe_device *vpfe_dev = fh->vpfe_dev;
|
unsigned long flags;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_videobuf_release\n");
|
|
/*
|
* We need to flush the buffer from the dma queue since
|
* they are de-allocated
|
*/
|
spin_lock_irqsave(&vpfe_dev->dma_queue_lock, flags);
|
INIT_LIST_HEAD(&vpfe_dev->dma_queue);
|
spin_unlock_irqrestore(&vpfe_dev->dma_queue_lock, flags);
|
videobuf_dma_contig_free(vq, vb);
|
vb->state = VIDEOBUF_NEEDS_INIT;
|
}
|
|
static const struct videobuf_queue_ops vpfe_videobuf_qops = {
|
.buf_setup = vpfe_videobuf_setup,
|
.buf_prepare = vpfe_videobuf_prepare,
|
.buf_queue = vpfe_videobuf_queue,
|
.buf_release = vpfe_videobuf_release,
|
};
|
|
/*
|
* vpfe_reqbufs. currently support REQBUF only once opening
|
* the device.
|
*/
|
static int vpfe_reqbufs(struct file *file, void *priv,
|
struct v4l2_requestbuffers *req_buf)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_fh *fh = file->private_data;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != req_buf->type) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n");
|
return -EINVAL;
|
}
|
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
return ret;
|
|
if (vpfe_dev->io_usrs != 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n");
|
ret = -EBUSY;
|
goto unlock_out;
|
}
|
|
vpfe_dev->memory = req_buf->memory;
|
videobuf_queue_dma_contig_init(&vpfe_dev->buffer_queue,
|
&vpfe_videobuf_qops,
|
vpfe_dev->pdev,
|
&vpfe_dev->irqlock,
|
req_buf->type,
|
vpfe_dev->fmt.fmt.pix.field,
|
sizeof(struct videobuf_buffer),
|
fh, NULL);
|
|
fh->io_allowed = 1;
|
vpfe_dev->io_usrs = 1;
|
INIT_LIST_HEAD(&vpfe_dev->dma_queue);
|
ret = videobuf_reqbufs(&vpfe_dev->buffer_queue, req_buf);
|
unlock_out:
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
static int vpfe_querybuf(struct file *file, void *priv,
|
struct v4l2_buffer *buf)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
|
return -EINVAL;
|
}
|
|
if (vpfe_dev->memory != V4L2_MEMORY_MMAP) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n");
|
return -EINVAL;
|
}
|
/* Call videobuf_querybuf to get information */
|
return videobuf_querybuf(&vpfe_dev->buffer_queue, buf);
|
}
|
|
static int vpfe_qbuf(struct file *file, void *priv,
|
struct v4l2_buffer *p)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_fh *fh = file->private_data;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != p->type) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
|
return -EINVAL;
|
}
|
|
/*
|
* If this file handle is not allowed to do IO,
|
* return error
|
*/
|
if (!fh->io_allowed) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
|
return -EACCES;
|
}
|
return videobuf_qbuf(&vpfe_dev->buffer_queue, p);
|
}
|
|
static int vpfe_dqbuf(struct file *file, void *priv,
|
struct v4l2_buffer *buf)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
|
return -EINVAL;
|
}
|
return videobuf_dqbuf(&vpfe_dev->buffer_queue,
|
buf, file->f_flags & O_NONBLOCK);
|
}
|
|
/*
|
* vpfe_calculate_offsets : This function calculates buffers offset
|
* for top and bottom field
|
*/
|
static void vpfe_calculate_offsets(struct vpfe_device *vpfe_dev)
|
{
|
struct v4l2_rect image_win;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_calculate_offsets\n");
|
|
ccdc_dev->hw_ops.get_image_window(&image_win);
|
vpfe_dev->field_off = image_win.height * image_win.width;
|
}
|
|
/* vpfe_start_ccdc_capture: start streaming in ccdc/isif */
|
static void vpfe_start_ccdc_capture(struct vpfe_device *vpfe_dev)
|
{
|
ccdc_dev->hw_ops.enable(1);
|
if (ccdc_dev->hw_ops.enable_out_to_sdram)
|
ccdc_dev->hw_ops.enable_out_to_sdram(1);
|
vpfe_dev->started = 1;
|
}
|
|
/*
|
* vpfe_streamon. Assume the DMA queue is not empty.
|
* application is expected to call QBUF before calling
|
* this ioctl. If not, driver returns error
|
*/
|
static int vpfe_streamon(struct file *file, void *priv,
|
enum v4l2_buf_type buf_type)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_fh *fh = file->private_data;
|
struct vpfe_subdev_info *sdinfo;
|
unsigned long addr;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
|
return -EINVAL;
|
}
|
|
/* If file handle is not allowed IO, return error */
|
if (!fh->io_allowed) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
|
return -EACCES;
|
}
|
|
sdinfo = vpfe_dev->current_subdev;
|
ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
|
video, s_stream, 1);
|
|
if (ret && (ret != -ENOIOCTLCMD)) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "stream on failed in subdev\n");
|
return -EINVAL;
|
}
|
|
/* If buffer queue is empty, return error */
|
if (list_empty(&vpfe_dev->buffer_queue.stream)) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n");
|
return -EIO;
|
}
|
|
/* Call videobuf_streamon to start streaming * in videobuf */
|
ret = videobuf_streamon(&vpfe_dev->buffer_queue);
|
if (ret)
|
return ret;
|
|
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
goto streamoff;
|
/* Get the next frame from the buffer queue */
|
vpfe_dev->next_frm = list_entry(vpfe_dev->dma_queue.next,
|
struct videobuf_buffer, queue);
|
vpfe_dev->cur_frm = vpfe_dev->next_frm;
|
/* Remove buffer from the buffer queue */
|
list_del(&vpfe_dev->cur_frm->queue);
|
/* Mark state of the current frame to active */
|
vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
|
/* Initialize field_id and started member */
|
vpfe_dev->field_id = 0;
|
addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
|
|
/* Calculate field offset */
|
vpfe_calculate_offsets(vpfe_dev);
|
|
if (vpfe_attach_irq(vpfe_dev) < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"Error in attaching interrupt handle\n");
|
ret = -EFAULT;
|
goto unlock_out;
|
}
|
if (ccdc_dev->hw_ops.configure() < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"Error in configuring ccdc\n");
|
ret = -EINVAL;
|
goto unlock_out;
|
}
|
ccdc_dev->hw_ops.setfbaddr((unsigned long)(addr));
|
vpfe_start_ccdc_capture(vpfe_dev);
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
unlock_out:
|
mutex_unlock(&vpfe_dev->lock);
|
streamoff:
|
videobuf_streamoff(&vpfe_dev->buffer_queue);
|
return ret;
|
}
|
|
static int vpfe_streamoff(struct file *file, void *priv,
|
enum v4l2_buf_type buf_type)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct vpfe_fh *fh = file->private_data;
|
struct vpfe_subdev_info *sdinfo;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n");
|
return -EINVAL;
|
}
|
|
/* If io is allowed for this file handle, return error */
|
if (!fh->io_allowed) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n");
|
return -EACCES;
|
}
|
|
/* If streaming is not started, return error */
|
if (!vpfe_dev->started) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "device started\n");
|
return -EINVAL;
|
}
|
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
return ret;
|
|
vpfe_stop_ccdc_capture(vpfe_dev);
|
vpfe_detach_irq(vpfe_dev);
|
|
sdinfo = vpfe_dev->current_subdev;
|
ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
|
video, s_stream, 0);
|
|
if (ret && (ret != -ENOIOCTLCMD))
|
v4l2_err(&vpfe_dev->v4l2_dev, "stream off failed in subdev\n");
|
ret = videobuf_streamoff(&vpfe_dev->buffer_queue);
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
static int vpfe_g_pixelaspect(struct file *file, void *priv,
|
int type, struct v4l2_fract *f)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_pixelaspect\n");
|
|
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
return -EINVAL;
|
/* If std_index is invalid, then just return (== 1:1 aspect) */
|
if (vpfe_dev->std_index >= ARRAY_SIZE(vpfe_standards))
|
return 0;
|
|
*f = vpfe_standards[vpfe_dev->std_index].pixelaspect;
|
return 0;
|
}
|
|
static int vpfe_g_selection(struct file *file, void *priv,
|
struct v4l2_selection *sel)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_selection\n");
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
return -EINVAL;
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_CROP:
|
sel->r = vpfe_dev->crop;
|
break;
|
case V4L2_SEL_TGT_CROP_DEFAULT:
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
sel->r.width = vpfe_standards[vpfe_dev->std_index].width;
|
sel->r.height = vpfe_standards[vpfe_dev->std_index].height;
|
break;
|
default:
|
return -EINVAL;
|
}
|
return 0;
|
}
|
|
static int vpfe_s_selection(struct file *file, void *priv,
|
struct v4l2_selection *sel)
|
{
|
struct vpfe_device *vpfe_dev = video_drvdata(file);
|
struct v4l2_rect rect = sel->r;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_selection\n");
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
sel->target != V4L2_SEL_TGT_CROP)
|
return -EINVAL;
|
|
if (vpfe_dev->started) {
|
/* make sure streaming is not started */
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"Cannot change crop when streaming is ON\n");
|
return -EBUSY;
|
}
|
|
ret = mutex_lock_interruptible(&vpfe_dev->lock);
|
if (ret)
|
return ret;
|
|
if (rect.top < 0 || rect.left < 0) {
|
v4l2_err(&vpfe_dev->v4l2_dev,
|
"doesn't support negative values for top & left\n");
|
ret = -EINVAL;
|
goto unlock_out;
|
}
|
|
/* adjust the width to 16 pixel boundary */
|
rect.width = ((rect.width + 15) & ~0xf);
|
|
/* make sure parameters are valid */
|
if ((rect.left + rect.width >
|
vpfe_dev->std_info.active_pixels) ||
|
(rect.top + rect.height >
|
vpfe_dev->std_info.active_lines)) {
|
v4l2_err(&vpfe_dev->v4l2_dev, "Error in S_SELECTION params\n");
|
ret = -EINVAL;
|
goto unlock_out;
|
}
|
ccdc_dev->hw_ops.set_image_window(&rect);
|
vpfe_dev->fmt.fmt.pix.width = rect.width;
|
vpfe_dev->fmt.fmt.pix.height = rect.height;
|
vpfe_dev->fmt.fmt.pix.bytesperline =
|
ccdc_dev->hw_ops.get_line_length();
|
vpfe_dev->fmt.fmt.pix.sizeimage =
|
vpfe_dev->fmt.fmt.pix.bytesperline *
|
vpfe_dev->fmt.fmt.pix.height;
|
vpfe_dev->crop = rect;
|
sel->r = rect;
|
unlock_out:
|
mutex_unlock(&vpfe_dev->lock);
|
return ret;
|
}
|
|
/* vpfe capture ioctl operations */
|
static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
|
.vidioc_querycap = vpfe_querycap,
|
.vidioc_g_fmt_vid_cap = vpfe_g_fmt_vid_cap,
|
.vidioc_enum_fmt_vid_cap = vpfe_enum_fmt_vid_cap,
|
.vidioc_s_fmt_vid_cap = vpfe_s_fmt_vid_cap,
|
.vidioc_try_fmt_vid_cap = vpfe_try_fmt_vid_cap,
|
.vidioc_enum_input = vpfe_enum_input,
|
.vidioc_g_input = vpfe_g_input,
|
.vidioc_s_input = vpfe_s_input,
|
.vidioc_querystd = vpfe_querystd,
|
.vidioc_s_std = vpfe_s_std,
|
.vidioc_g_std = vpfe_g_std,
|
.vidioc_reqbufs = vpfe_reqbufs,
|
.vidioc_querybuf = vpfe_querybuf,
|
.vidioc_qbuf = vpfe_qbuf,
|
.vidioc_dqbuf = vpfe_dqbuf,
|
.vidioc_streamon = vpfe_streamon,
|
.vidioc_streamoff = vpfe_streamoff,
|
.vidioc_g_pixelaspect = vpfe_g_pixelaspect,
|
.vidioc_g_selection = vpfe_g_selection,
|
.vidioc_s_selection = vpfe_s_selection,
|
};
|
|
static struct vpfe_device *vpfe_initialize(void)
|
{
|
struct vpfe_device *vpfe_dev;
|
|
/* Default number of buffers should be 3 */
|
if ((numbuffers > 0) &&
|
(numbuffers < config_params.min_numbuffers))
|
numbuffers = config_params.min_numbuffers;
|
|
/*
|
* Set buffer size to min buffers size if invalid buffer size is
|
* given
|
*/
|
if (bufsize < config_params.min_bufsize)
|
bufsize = config_params.min_bufsize;
|
|
config_params.numbuffers = numbuffers;
|
|
if (numbuffers)
|
config_params.device_bufsize = bufsize;
|
|
/* Allocate memory for device objects */
|
vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
|
|
return vpfe_dev;
|
}
|
|
/*
|
* vpfe_probe : This function creates device entries by register
|
* itself to the V4L2 driver and initializes fields of each
|
* device objects
|
*/
|
static int vpfe_probe(struct platform_device *pdev)
|
{
|
struct vpfe_subdev_info *sdinfo;
|
struct vpfe_config *vpfe_cfg;
|
struct resource *res1;
|
struct vpfe_device *vpfe_dev;
|
struct i2c_adapter *i2c_adap;
|
struct video_device *vfd;
|
int ret, i, j;
|
int num_subdevs = 0;
|
|
/* Get the pointer to the device object */
|
vpfe_dev = vpfe_initialize();
|
|
if (!vpfe_dev) {
|
v4l2_err(pdev->dev.driver,
|
"Failed to allocate memory for vpfe_dev\n");
|
return -ENOMEM;
|
}
|
|
vpfe_dev->pdev = &pdev->dev;
|
|
if (!pdev->dev.platform_data) {
|
v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
|
ret = -ENODEV;
|
goto probe_free_dev_mem;
|
}
|
|
vpfe_cfg = pdev->dev.platform_data;
|
vpfe_dev->cfg = vpfe_cfg;
|
if (!vpfe_cfg->ccdc || !vpfe_cfg->card_name || !vpfe_cfg->sub_devs) {
|
v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
|
ret = -ENOENT;
|
goto probe_free_dev_mem;
|
}
|
|
/* Allocate memory for ccdc configuration */
|
ccdc_cfg = kmalloc(sizeof(*ccdc_cfg), GFP_KERNEL);
|
if (!ccdc_cfg) {
|
ret = -ENOMEM;
|
goto probe_free_dev_mem;
|
}
|
|
mutex_lock(&ccdc_lock);
|
|
strscpy(ccdc_cfg->name, vpfe_cfg->ccdc, sizeof(ccdc_cfg->name));
|
/* Get VINT0 irq resource */
|
res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
if (!res1) {
|
v4l2_err(pdev->dev.driver,
|
"Unable to get interrupt for VINT0\n");
|
ret = -ENODEV;
|
goto probe_free_ccdc_cfg_mem;
|
}
|
vpfe_dev->ccdc_irq0 = res1->start;
|
|
/* Get VINT1 irq resource */
|
res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
|
if (!res1) {
|
v4l2_err(pdev->dev.driver,
|
"Unable to get interrupt for VINT1\n");
|
ret = -ENODEV;
|
goto probe_free_ccdc_cfg_mem;
|
}
|
vpfe_dev->ccdc_irq1 = res1->start;
|
|
ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
|
"vpfe_capture0", vpfe_dev);
|
|
if (0 != ret) {
|
v4l2_err(pdev->dev.driver, "Unable to request interrupt\n");
|
goto probe_free_ccdc_cfg_mem;
|
}
|
|
vfd = &vpfe_dev->video_dev;
|
/* Initialize field of video device */
|
vfd->release = video_device_release_empty;
|
vfd->fops = &vpfe_fops;
|
vfd->ioctl_ops = &vpfe_ioctl_ops;
|
vfd->tvnorms = 0;
|
vfd->v4l2_dev = &vpfe_dev->v4l2_dev;
|
vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
|
snprintf(vfd->name, sizeof(vfd->name),
|
"%s_V%d.%d.%d",
|
CAPTURE_DRV_NAME,
|
(VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
|
(VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
|
(VPFE_CAPTURE_VERSION_CODE) & 0xff);
|
|
ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
|
if (ret) {
|
v4l2_err(pdev->dev.driver,
|
"Unable to register v4l2 device.\n");
|
goto probe_out_release_irq;
|
}
|
v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
|
spin_lock_init(&vpfe_dev->irqlock);
|
spin_lock_init(&vpfe_dev->dma_queue_lock);
|
mutex_init(&vpfe_dev->lock);
|
|
/* Initialize field of the device objects */
|
vpfe_dev->numbuffers = config_params.numbuffers;
|
|
/* register video device */
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
|
"trying to register vpfe device.\n");
|
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
|
"video_dev=%p\n", &vpfe_dev->video_dev);
|
vpfe_dev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
ret = video_register_device(&vpfe_dev->video_dev,
|
VFL_TYPE_VIDEO, -1);
|
|
if (ret) {
|
v4l2_err(pdev->dev.driver,
|
"Unable to register video device.\n");
|
goto probe_out_v4l2_unregister;
|
}
|
|
v4l2_info(&vpfe_dev->v4l2_dev, "video device registered\n");
|
/* set the driver data in platform device */
|
platform_set_drvdata(pdev, vpfe_dev);
|
/* set driver private data */
|
video_set_drvdata(&vpfe_dev->video_dev, vpfe_dev);
|
i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
|
num_subdevs = vpfe_cfg->num_subdevs;
|
vpfe_dev->sd = kmalloc_array(num_subdevs,
|
sizeof(*vpfe_dev->sd),
|
GFP_KERNEL);
|
if (!vpfe_dev->sd) {
|
ret = -ENOMEM;
|
goto probe_out_video_unregister;
|
}
|
|
for (i = 0; i < num_subdevs; i++) {
|
struct v4l2_input *inps;
|
|
sdinfo = &vpfe_cfg->sub_devs[i];
|
|
/* Load up the subdevice */
|
vpfe_dev->sd[i] =
|
v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
|
i2c_adap,
|
&sdinfo->board_info,
|
NULL);
|
if (vpfe_dev->sd[i]) {
|
v4l2_info(&vpfe_dev->v4l2_dev,
|
"v4l2 sub device %s registered\n",
|
sdinfo->name);
|
vpfe_dev->sd[i]->grp_id = sdinfo->grp_id;
|
/* update tvnorms from the sub devices */
|
for (j = 0; j < sdinfo->num_inputs; j++) {
|
inps = &sdinfo->inputs[j];
|
vfd->tvnorms |= inps->std;
|
}
|
} else {
|
v4l2_info(&vpfe_dev->v4l2_dev,
|
"v4l2 sub device %s register fails\n",
|
sdinfo->name);
|
ret = -ENXIO;
|
goto probe_sd_out;
|
}
|
}
|
|
/* set first sub device as current one */
|
vpfe_dev->current_subdev = &vpfe_cfg->sub_devs[0];
|
vpfe_dev->v4l2_dev.ctrl_handler = vpfe_dev->sd[0]->ctrl_handler;
|
|
/* We have at least one sub device to work with */
|
mutex_unlock(&ccdc_lock);
|
return 0;
|
|
probe_sd_out:
|
kfree(vpfe_dev->sd);
|
probe_out_video_unregister:
|
video_unregister_device(&vpfe_dev->video_dev);
|
probe_out_v4l2_unregister:
|
v4l2_device_unregister(&vpfe_dev->v4l2_dev);
|
probe_out_release_irq:
|
free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
|
probe_free_ccdc_cfg_mem:
|
kfree(ccdc_cfg);
|
mutex_unlock(&ccdc_lock);
|
probe_free_dev_mem:
|
kfree(vpfe_dev);
|
return ret;
|
}
|
|
/*
|
* vpfe_remove : It un-register device from V4L2 driver
|
*/
|
static int vpfe_remove(struct platform_device *pdev)
|
{
|
struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
|
|
v4l2_info(pdev->dev.driver, "vpfe_remove\n");
|
|
free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
|
kfree(vpfe_dev->sd);
|
v4l2_device_unregister(&vpfe_dev->v4l2_dev);
|
video_unregister_device(&vpfe_dev->video_dev);
|
kfree(vpfe_dev);
|
kfree(ccdc_cfg);
|
return 0;
|
}
|
|
static int vpfe_suspend(struct device *dev)
|
{
|
return 0;
|
}
|
|
static int vpfe_resume(struct device *dev)
|
{
|
return 0;
|
}
|
|
static const struct dev_pm_ops vpfe_dev_pm_ops = {
|
.suspend = vpfe_suspend,
|
.resume = vpfe_resume,
|
};
|
|
static struct platform_driver vpfe_driver = {
|
.driver = {
|
.name = CAPTURE_DRV_NAME,
|
.pm = &vpfe_dev_pm_ops,
|
},
|
.probe = vpfe_probe,
|
.remove = vpfe_remove,
|
};
|
|
module_platform_driver(vpfe_driver);
|
