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* Copyright (C) 2012 Texas Instruments Inc
*
* 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 the Free Software Foundation version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contributors:
* Manjunath Hadli <manjunath.hadli@ti.com>
* Prabhakar Lad <prabhakar.lad@ti.com>
*
*
* 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/DM365 only).
*
* Features supported
* - MMAP IO
* - USERPTR IO
* - Capture using TVP5146 over BT.656
* - Support for interfacing decoders using sub device model
* - Work with DM365 or DM355 or DM6446 CCDC to do Raw Bayer
* RGB/YUV data capture to SDRAM.
* - Chaining of Image Processor
* - SINGLE-SHOT mode
*/
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include "vpfe.h"
#include "vpfe_mc_capture.h"
static bool debug;
static bool interface;
module_param(interface, bool, S_IRUGO);
module_param(debug, bool, 0644);
/**
* VPFE capture can be used for capturing video such as from TVP5146 or TVP7002
* and for capture raw bayer data from camera sensors such as mt9p031. At this
* point there is problem in co-existence of mt9p031 and tvp5146 due to i2c
* address collision. So set the variable below from bootargs to do either video
* capture or camera capture.
* interface = 0 - video capture (from TVP514x or such),
* interface = 1 - Camera capture (from mt9p031 or such)
* Re-visit this when we fix the co-existence issue
*/
MODULE_PARM_DESC(interface, "interface 0-1 (default:0)");
MODULE_PARM_DESC(debug, "Debug level 0-1");
MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Texas Instruments");
/* map mbus_fmt to pixelformat */
void mbus_to_pix(const struct v4l2_mbus_framefmt *mbus,
struct v4l2_pix_format *pix)
{
switch (mbus->code) {
case MEDIA_BUS_FMT_UYVY8_2X8:
pix->pixelformat = V4L2_PIX_FMT_UYVY;
pix->bytesperline = pix->width * 2;
break;
case MEDIA_BUS_FMT_YUYV8_2X8:
pix->pixelformat = V4L2_PIX_FMT_YUYV;
pix->bytesperline = pix->width * 2;
break;
case MEDIA_BUS_FMT_YUYV10_1X20:
pix->pixelformat = V4L2_PIX_FMT_UYVY;
pix->bytesperline = pix->width * 2;
break;
case MEDIA_BUS_FMT_SGRBG12_1X12:
pix->pixelformat = V4L2_PIX_FMT_SBGGR16;
pix->bytesperline = pix->width * 2;
break;
case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8:
pix->pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8;
pix->bytesperline = pix->width;
break;
case MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8:
pix->pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8;
pix->bytesperline = pix->width;
break;
case MEDIA_BUS_FMT_YDYUYDYV8_1X16:
pix->pixelformat = V4L2_PIX_FMT_NV12;
pix->bytesperline = pix->width;
break;
case MEDIA_BUS_FMT_Y8_1X8:
pix->pixelformat = V4L2_PIX_FMT_GREY;
pix->bytesperline = pix->width;
break;
case MEDIA_BUS_FMT_UV8_1X8:
pix->pixelformat = V4L2_PIX_FMT_UV8;
pix->bytesperline = pix->width;
break;
default:
pr_err("Invalid mbus code set\n");
}
/* pitch should be 32 bytes aligned */
pix->bytesperline = ALIGN(pix->bytesperline, 32);
if (pix->pixelformat == V4L2_PIX_FMT_NV12)
pix->sizeimage = pix->bytesperline * pix->height +
((pix->bytesperline * pix->height) >> 1);
else
pix->sizeimage = pix->bytesperline * pix->height;
}
/* ISR for VINT0*/
static irqreturn_t vpfe_isr(int irq, void *dev_id)
{
struct vpfe_device *vpfe_dev = dev_id;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_isr\n");
vpfe_isif_buffer_isr(&vpfe_dev->vpfe_isif);
vpfe_resizer_buffer_isr(&vpfe_dev->vpfe_resizer);
return IRQ_HANDLED;
}
/* vpfe_vdint1_isr() - isr handler for VINT1 interrupt */
static irqreturn_t vpfe_vdint1_isr(int irq, void *dev_id)
{
struct vpfe_device *vpfe_dev = dev_id;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_vdint1_isr\n");
vpfe_isif_vidint1_isr(&vpfe_dev->vpfe_isif);
return IRQ_HANDLED;
}
/* vpfe_imp_dma_isr() - ISR for ipipe dma completion */
static irqreturn_t vpfe_imp_dma_isr(int irq, void *dev_id)
{
struct vpfe_device *vpfe_dev = dev_id;
v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_imp_dma_isr\n");
vpfe_ipipeif_ss_buffer_isr(&vpfe_dev->vpfe_ipipeif);
vpfe_resizer_dma_isr(&vpfe_dev->vpfe_resizer);
return IRQ_HANDLED;
}
/*
* vpfe_disable_clock() - Disable clocks for vpfe capture driver
* @vpfe_dev - ptr to vpfe capture device
*
* Disables clocks defined in vpfe configuration. The function
* assumes that at least one clock is to be defined which is
* true as of now.
*/
static void vpfe_disable_clock(struct vpfe_device *vpfe_dev)
{
struct vpfe_config *vpfe_cfg = vpfe_dev->cfg;
int i;
for (i = 0; i < vpfe_cfg->num_clocks; i++) {
clk_disable_unprepare(vpfe_dev->clks[i]);
clk_put(vpfe_dev->clks[i]);
}
kzfree(vpfe_dev->clks);
v4l2_info(vpfe_dev->pdev->driver, "vpfe capture clocks disabled\n");
}
/*
* vpfe_enable_clock() - Enable clocks for vpfe capture driver
* @vpfe_dev - ptr to vpfe capture device
*
* Enables clocks defined in vpfe configuration. The function
* assumes that at least one clock is to be defined which is
* true as of now.
*/
static int vpfe_enable_clock(struct vpfe_device *vpfe_dev)
{
struct vpfe_config *vpfe_cfg = vpfe_dev->cfg;
int ret = -EFAULT;
int i;
if (!vpfe_cfg->num_clocks)
return 0;
vpfe_dev->clks = kcalloc(vpfe_cfg->num_clocks,
sizeof(*vpfe_dev->clks), GFP_KERNEL);
if (vpfe_dev->clks == NULL)
return -ENOMEM;
for (i = 0; i < vpfe_cfg->num_clocks; i++) {
if (vpfe_cfg->clocks[i] == NULL) {
v4l2_err(vpfe_dev->pdev->driver,
"clock %s is not defined in vpfe config\n",
vpfe_cfg->clocks[i]);
goto out;
}
vpfe_dev->clks[i] =
clk_get(vpfe_dev->pdev, vpfe_cfg->clocks[i]);
if (IS_ERR(vpfe_dev->clks[i])) {
v4l2_err(vpfe_dev->pdev->driver,
"Failed to get clock %s\n",
vpfe_cfg->clocks[i]);
goto out;
}
if (clk_prepare_enable(vpfe_dev->clks[i])) {
v4l2_err(vpfe_dev->pdev->driver,
"vpfe clock %s not enabled\n",
vpfe_cfg->clocks[i]);
goto out;
}
v4l2_info(vpfe_dev->pdev->driver, "vpss clock %s enabled",
vpfe_cfg->clocks[i]);
}
return 0;
out:
for (i = 0; i < vpfe_cfg->num_clocks; i++)
if (!IS_ERR(vpfe_dev->clks[i])) {
clk_disable_unprepare(vpfe_dev->clks[i]);
clk_put(vpfe_dev->clks[i]);
}
v4l2_err(vpfe_dev->pdev->driver, "Failed to enable clocks\n");
kzfree(vpfe_dev->clks);
return ret;
}
/*
* vpfe_detach_irq() - Detach IRQs for vpfe capture driver
* @vpfe_dev - ptr to vpfe capture device
*
* Detach all IRQs defined in vpfe configuration.
*/
static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
{
free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
free_irq(vpfe_dev->imp_dma_irq, vpfe_dev);
}
/*
* vpfe_attach_irq() - Attach IRQs for vpfe capture driver
* @vpfe_dev - ptr to vpfe capture device
*
* Attach all IRQs defined in vpfe configuration.
*/
static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
{
int ret;
ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
"vpfe_capture0", vpfe_dev);
if (ret < 0) {
v4l2_err(&vpfe_dev->v4l2_dev,
"Error: requesting VINT0 interrupt\n");
return ret;
}
ret = request_irq(vpfe_dev->ccdc_irq1, vpfe_vdint1_isr, 0,
"vpfe_capture1", vpfe_dev);
if (ret < 0) {
v4l2_err(&vpfe_dev->v4l2_dev,
"Error: requesting VINT1 interrupt\n");
free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
return ret;
}
ret = request_irq(vpfe_dev->imp_dma_irq, vpfe_imp_dma_isr,
0, "Imp_Sdram_Irq", vpfe_dev);
if (ret < 0) {
v4l2_err(&vpfe_dev->v4l2_dev,
"Error: requesting IMP IRQ interrupt\n");
free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
return ret;
}
return 0;
}
/*
* register_i2c_devices() - register all i2c v4l2 subdevs
* @vpfe_dev - ptr to vpfe capture device
*
* register all i2c v4l2 subdevs
*/
static int register_i2c_devices(struct vpfe_device *vpfe_dev)
{
struct vpfe_ext_subdev_info *sdinfo;
struct vpfe_config *vpfe_cfg;
struct i2c_adapter *i2c_adap;
unsigned int num_subdevs;
int ret;
int i;
int k;
vpfe_cfg = vpfe_dev->cfg;
i2c_adap = i2c_get_adapter(1);
num_subdevs = vpfe_cfg->num_subdevs;
vpfe_dev->sd =
kcalloc(num_subdevs, sizeof(struct v4l2_subdev *),
GFP_KERNEL);
if (vpfe_dev->sd == NULL)
return -ENOMEM;
for (i = 0, k = 0; i < num_subdevs; i++) {
sdinfo = &vpfe_cfg->sub_devs[i];
/*
* register subdevices based on interface setting. Currently
* tvp5146 and mt9p031 cannot co-exists due to i2c address
* conflicts. So only one of them is registered. Re-visit this
* once we have support for i2c switch handling in i2c driver
* framework
*/
if (interface == sdinfo->is_camera) {
/* setup input path */
if (vpfe_cfg->setup_input &&
vpfe_cfg->setup_input(sdinfo->grp_id) < 0) {
ret = -EFAULT;
v4l2_info(&vpfe_dev->v4l2_dev,
"could not setup input for %s\n",
sdinfo->module_name);
goto probe_sd_out;
}
/* Load up the subdevice */
vpfe_dev->sd[k] =
v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
i2c_adap, &sdinfo->board_info,
NULL);
if (vpfe_dev->sd[k]) {
v4l2_info(&vpfe_dev->v4l2_dev,
"v4l2 sub device %s registered\n",
sdinfo->module_name);
vpfe_dev->sd[k]->grp_id = sdinfo->grp_id;
k++;
sdinfo->registered = 1;
}
} else {
v4l2_info(&vpfe_dev->v4l2_dev,
"v4l2 sub device %s is not registered\n",
sdinfo->module_name);
}
}
vpfe_dev->num_ext_subdevs = k;
return 0;
probe_sd_out:
kzfree(vpfe_dev->sd);
return ret;
}
/*
* vpfe_register_entities() - register all v4l2 subdevs and media entities
* @vpfe_dev - ptr to vpfe capture device
*
* register all v4l2 subdevs, media entities, and creates links
* between entities
*/
static int vpfe_register_entities(struct vpfe_device *vpfe_dev)
{
unsigned int flags = 0;
int ret;
int i;
/* register i2c devices first */
ret = register_i2c_devices(vpfe_dev);
if (ret)
return ret;
/* register rest of the sub-devs */
ret = vpfe_isif_register_entities(&vpfe_dev->vpfe_isif,
&vpfe_dev->v4l2_dev);
if (ret)
return ret;
ret = vpfe_ipipeif_register_entities(&vpfe_dev->vpfe_ipipeif,
&vpfe_dev->v4l2_dev);
if (ret)
goto out_isif_register;
ret = vpfe_ipipe_register_entities(&vpfe_dev->vpfe_ipipe,
&vpfe_dev->v4l2_dev);
if (ret)
goto out_ipipeif_register;
ret = vpfe_resizer_register_entities(&vpfe_dev->vpfe_resizer,
&vpfe_dev->v4l2_dev);
if (ret)
goto out_ipipe_register;
/* create links now, starting with external(i2c) entities */
for (i = 0; i < vpfe_dev->num_ext_subdevs; i++)
/*
* if entity has no pads (ex: amplifier),
* cant establish link
*/
if (vpfe_dev->sd[i]->entity.num_pads) {
ret = media_create_pad_link(&vpfe_dev->sd[i]->entity,
0, &vpfe_dev->vpfe_isif.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
}
ret = media_create_pad_link(&vpfe_dev->vpfe_isif.subdev.entity, 1,
&vpfe_dev->vpfe_ipipeif.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
ret = media_create_pad_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
&vpfe_dev->vpfe_ipipe.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
ret = media_create_pad_link(&vpfe_dev->vpfe_ipipe.subdev.entity,
1, &vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
ret = media_create_pad_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
&vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity,
0, flags);
if (ret < 0)
goto out_resizer_register;
ret = v4l2_device_register_subdev_nodes(&vpfe_dev->v4l2_dev);
if (ret < 0)
goto out_resizer_register;
return 0;
out_resizer_register:
vpfe_resizer_unregister_entities(&vpfe_dev->vpfe_resizer);
out_ipipe_register:
vpfe_ipipe_unregister_entities(&vpfe_dev->vpfe_ipipe);
out_ipipeif_register:
vpfe_ipipeif_unregister_entities(&vpfe_dev->vpfe_ipipeif);
out_isif_register:
vpfe_isif_unregister_entities(&vpfe_dev->vpfe_isif);
return ret;
}
/*
* vpfe_unregister_entities() - unregister all v4l2 subdevs and media entities
* @vpfe_dev - ptr to vpfe capture device
*
* unregister all v4l2 subdevs and media entities
*/
static void vpfe_unregister_entities(struct vpfe_device *vpfe_dev)
{
vpfe_isif_unregister_entities(&vpfe_dev->vpfe_isif);
vpfe_ipipeif_unregister_entities(&vpfe_dev->vpfe_ipipeif);
vpfe_ipipe_unregister_entities(&vpfe_dev->vpfe_ipipe);
vpfe_resizer_unregister_entities(&vpfe_dev->vpfe_resizer);
}
/*
* vpfe_cleanup_modules() - cleanup all non-i2c v4l2 subdevs
* @vpfe_dev - ptr to vpfe capture device
* @pdev - pointer to platform device
*
* cleanup all v4l2 subdevs
*/
static void vpfe_cleanup_modules(struct vpfe_device *vpfe_dev,
struct platform_device *pdev)
{
vpfe_isif_cleanup(&vpfe_dev->vpfe_isif, pdev);
vpfe_ipipeif_cleanup(&vpfe_dev->vpfe_ipipeif, pdev);
vpfe_ipipe_cleanup(&vpfe_dev->vpfe_ipipe, pdev);
vpfe_resizer_cleanup(&vpfe_dev->vpfe_resizer, pdev);
}
/*
* vpfe_initialize_modules() - initialize all non-i2c v4l2 subdevs
* @vpfe_dev - ptr to vpfe capture device
* @pdev - pointer to platform device
*
* intialize all v4l2 subdevs and media entities
*/
static int vpfe_initialize_modules(struct vpfe_device *vpfe_dev,
struct platform_device *pdev)
{
int ret;
ret = vpfe_isif_init(&vpfe_dev->vpfe_isif, pdev);
if (ret)
return ret;
ret = vpfe_ipipeif_init(&vpfe_dev->vpfe_ipipeif, pdev);
if (ret)
goto out_isif_init;
ret = vpfe_ipipe_init(&vpfe_dev->vpfe_ipipe, pdev);
if (ret)
goto out_ipipeif_init;
ret = vpfe_resizer_init(&vpfe_dev->vpfe_resizer, pdev);
if (ret)
goto out_ipipe_init;
return 0;
out_ipipe_init:
vpfe_ipipe_cleanup(&vpfe_dev->vpfe_ipipe, pdev);
out_ipipeif_init:
vpfe_ipipeif_cleanup(&vpfe_dev->vpfe_ipipeif, pdev);
out_isif_init:
vpfe_isif_cleanup(&vpfe_dev->vpfe_isif, pdev);
return ret;
}
/*
* vpfe_probe() : vpfe probe function
* @pdev: platform device pointer
*
* 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_device *vpfe_dev;
struct resource *res1;
int ret = -ENOMEM;
vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
if (!vpfe_dev)
return ret;
if (pdev->dev.platform_data == NULL) {
v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
ret = -ENOENT;
goto probe_free_dev_mem;
}
vpfe_dev->cfg = pdev->dev.platform_data;
if (vpfe_dev->cfg->card_name == NULL ||
vpfe_dev->cfg->sub_devs == NULL) {
v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
ret = -ENOENT;
goto probe_free_dev_mem;
}
/* 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 = -ENOENT;
goto probe_free_dev_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 = -ENOENT;
goto probe_free_dev_mem;
}
vpfe_dev->ccdc_irq1 = res1->start;
/* Get DMA irq resource */
res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 2);
if (!res1) {
v4l2_err(pdev->dev.driver,
"Unable to get interrupt for DMA\n");
ret = -ENOENT;
goto probe_free_dev_mem;
}
vpfe_dev->imp_dma_irq = res1->start;
vpfe_dev->pdev = &pdev->dev;
/* enable vpss clocks */
ret = vpfe_enable_clock(vpfe_dev);
if (ret)
goto probe_free_dev_mem;
ret = vpfe_initialize_modules(vpfe_dev, pdev);
if (ret)
goto probe_disable_clock;
vpfe_dev->media_dev.dev = vpfe_dev->pdev;
strcpy((char *)&vpfe_dev->media_dev.model, "davinci-media");
ret = media_device_register(&vpfe_dev->media_dev);
if (ret) {
v4l2_err(pdev->dev.driver,
"Unable to register media device.\n");
goto probe_out_entities_cleanup;
}
vpfe_dev->v4l2_dev.mdev = &vpfe_dev->media_dev;
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_media_unregister;
}
v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
/* set the driver data in platform device */
platform_set_drvdata(pdev, vpfe_dev);
/* register subdevs/entities */
ret = vpfe_register_entities(vpfe_dev);
if (ret)
goto probe_out_v4l2_unregister;
ret = vpfe_attach_irq(vpfe_dev);
if (ret)
goto probe_out_entities_unregister;
return 0;
probe_out_entities_unregister:
vpfe_unregister_entities(vpfe_dev);
kzfree(vpfe_dev->sd);
probe_out_v4l2_unregister:
v4l2_device_unregister(&vpfe_dev->v4l2_dev);
probe_out_media_unregister:
media_device_unregister(&vpfe_dev->media_dev);
probe_out_entities_cleanup:
vpfe_cleanup_modules(vpfe_dev, pdev);
probe_disable_clock:
vpfe_disable_clock(vpfe_dev);
probe_free_dev_mem:
kzfree(vpfe_dev);
return ret;
}
/*
* vpfe_remove : This function un-registers 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");
kzfree(vpfe_dev->sd);
vpfe_detach_irq(vpfe_dev);
vpfe_unregister_entities(vpfe_dev);
vpfe_cleanup_modules(vpfe_dev, pdev);
v4l2_device_unregister(&vpfe_dev->v4l2_dev);
media_device_unregister(&vpfe_dev->media_dev);
vpfe_disable_clock(vpfe_dev);
kzfree(vpfe_dev);
return 0;
}
static struct platform_driver vpfe_driver = {
.driver = {
.name = CAPTURE_DRV_NAME,
},
.probe = vpfe_probe,
.remove = vpfe_remove,
};
module_platform_driver(vpfe_driver);
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