99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Driver for the Conexant CX23885/7/8 PCIe bridge
|
|
*
|
|
* Various common ioctl() support functions
|
|
*
|
|
* Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
|
|
*/
|
|
|
|
#include "cx23885.h"
|
|
#include "cx23885-ioctl.h"
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
int cx23885_g_chip_info(struct file *file, void *fh,
|
|
struct v4l2_dbg_chip_info *chip)
|
|
{
|
|
struct cx23885_dev *dev = video_drvdata(file);
|
|
|
|
if (chip->match.addr > 1)
|
|
return -EINVAL;
|
|
if (chip->match.addr == 1) {
|
|
if (dev->v4l_device == NULL)
|
|
return -EINVAL;
|
|
strscpy(chip->name, "cx23417", sizeof(chip->name));
|
|
} else {
|
|
strscpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int cx23417_g_register(struct cx23885_dev *dev,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
u32 value;
|
|
|
|
if (dev->v4l_device == NULL)
|
|
return -EINVAL;
|
|
|
|
if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
|
|
return -EINVAL;
|
|
|
|
if (mc417_register_read(dev, (u16) reg->reg, &value))
|
|
return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
|
|
|
|
reg->size = 4;
|
|
reg->val = value;
|
|
return 0;
|
|
}
|
|
|
|
int cx23885_g_register(struct file *file, void *fh,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct cx23885_dev *dev = video_drvdata(file);
|
|
|
|
if (reg->match.addr > 1)
|
|
return -EINVAL;
|
|
if (reg->match.addr)
|
|
return cx23417_g_register(dev, reg);
|
|
|
|
if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
|
|
return -EINVAL;
|
|
|
|
reg->size = 4;
|
|
reg->val = cx_read(reg->reg);
|
|
return 0;
|
|
}
|
|
|
|
static int cx23417_s_register(struct cx23885_dev *dev,
|
|
const struct v4l2_dbg_register *reg)
|
|
{
|
|
if (dev->v4l_device == NULL)
|
|
return -EINVAL;
|
|
|
|
if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
|
|
return -EINVAL;
|
|
|
|
if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val))
|
|
return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
|
|
return 0;
|
|
}
|
|
|
|
int cx23885_s_register(struct file *file, void *fh,
|
|
const struct v4l2_dbg_register *reg)
|
|
{
|
|
struct cx23885_dev *dev = video_drvdata(file);
|
|
|
|
if (reg->match.addr > 1)
|
|
return -EINVAL;
|
|
if (reg->match.addr)
|
|
return cx23417_s_register(dev, reg);
|
|
|
|
if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
|
|
return -EINVAL;
|
|
|
|
cx_write(reg->reg, reg->val);
|
|
return 0;
|
|
}
|
|
#endif
|