[mirror_ubuntu-jammy-kernel.git] / drivers / media / pci / cx23885 / cx23885-ioctl.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
Commit	Line	Data
c942fddf	1	// SPDX-License-Identifier: GPL-2.0-or-later
74618244 AW	2	/*
	3	* Driver for the Conexant CX23885/7/8 PCIe bridge
	4	*
	5	* Various common ioctl() support functions
	6	*
6afdeaf8	7	* Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
74618244 AW	8	*/
	9
	10	#include "cx23885.h"
ada73eee MCC	11	#include "cx23885-ioctl.h"
ada73eee MCC	12
80f8568f HV	13	#ifdef CONFIG_VIDEO_ADV_DEBUG
	14	int cx23885_g_chip_info(struct file file, void fh,
	15	struct v4l2_dbg_chip_info *chip)
74618244	16	{
568f44a1	17	struct cx23885_dev *dev = video_drvdata(file);
74618244	18
80f8568f	19	if (chip->match.addr > 1)
74618244	20	return -EINVAL;
80f8568f HV	21	if (chip->match.addr == 1) {
	22	if (dev->v4l_device == NULL)
	23	return -EINVAL;
c0decac1	24	strscpy(chip->name, "cx23417", sizeof(chip->name));
80f8568f	25	} else {
c0decac1	26	strscpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
80f8568f	27	}
74618244 AW	28	return 0;
	29	}
	30
	31	static int cx23417_g_register(struct cx23885_dev *dev,
	32	struct v4l2_dbg_register *reg)
	33	{
	34	u32 value;
	35
	36	if (dev->v4l_device == NULL)
	37	return -EINVAL;
	38
	39	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= 0x10000)
	40	return -EINVAL;
	41
	42	if (mc417_register_read(dev, (u16) reg->reg, &value))
	43	return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
	44
	45	reg->size = 4;
	46	reg->val = value;
	47	return 0;
	48	}
	49
	50	int cx23885_g_register(struct file file, void fh,
	51	struct v4l2_dbg_register *reg)
	52	{
568f44a1	53	struct cx23885_dev *dev = video_drvdata(file);
74618244	54
80f8568f HV	55	if (reg->match.addr > 1)
	56	return -EINVAL;
	57	if (reg->match.addr)
	58	return cx23417_g_register(dev, reg);
74618244	59
74618244 AW	60	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= pci_resource_len(dev->pci, 0))
	61	return -EINVAL;
	62
80f8568f HV	63	reg->size = 4;
80f8568f HV	64	reg->val = cx_read(reg->reg);
74618244 AW	65	return 0;
	66	}
	67
	68	static int cx23417_s_register(struct cx23885_dev *dev,
977ba3b1	69	const struct v4l2_dbg_register *reg)
74618244 AW	70	{
	71	if (dev->v4l_device == NULL)
	72	return -EINVAL;
	73
	74	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= 0x10000)
	75	return -EINVAL;
	76
	77	if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val))
	78	return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
74618244 AW	79	return 0;
	80	}
	81
	82	int cx23885_s_register(struct file file, void fh,
977ba3b1	83	const struct v4l2_dbg_register *reg)
74618244	84	{
568f44a1	85	struct cx23885_dev *dev = video_drvdata(file);
74618244	86
80f8568f HV	87	if (reg->match.addr > 1)
	88	return -EINVAL;
	89	if (reg->match.addr)
	90	return cx23417_s_register(dev, reg);
	91
	92	if ((reg->reg & 0x3) != 0 \|\| reg->reg >= pci_resource_len(dev->pci, 0))
	93	return -EINVAL;
74618244	94
80f8568f	95	cx_write(reg->reg, reg->val);
74618244 AW	96	return 0;
	97	}
	98	#endif