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// 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
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