1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for the Conexant CX23885/7/8 PCIe bridge
5 * Various common ioctl() support functions
7 * Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
11 #include "cx23885-ioctl.h"
13 #ifdef CONFIG_VIDEO_ADV_DEBUG
14 int cx23885_g_chip_info(struct file *file, void *fh,
15 struct v4l2_dbg_chip_info *chip)
17 struct cx23885_dev *dev = video_drvdata(file);
19 if (chip->match.addr > 1)
21 if (chip->match.addr == 1) {
22 if (dev->v4l_device == NULL)
24 strscpy(chip->name, "cx23417", sizeof(chip->name));
26 strscpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
31 static int cx23417_g_register(struct cx23885_dev *dev,
32 struct v4l2_dbg_register *reg)
36 if (dev->v4l_device == NULL)
39 if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
42 if (mc417_register_read(dev, (u16) reg->reg, &value))
43 return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
50 int cx23885_g_register(struct file *file, void *fh,
51 struct v4l2_dbg_register *reg)
53 struct cx23885_dev *dev = video_drvdata(file);
55 if (reg->match.addr > 1)
58 return cx23417_g_register(dev, reg);
60 if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
64 reg->val = cx_read(reg->reg);
68 static int cx23417_s_register(struct cx23885_dev *dev,
69 const struct v4l2_dbg_register *reg)
71 if (dev->v4l_device == NULL)
74 if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
77 if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val))
78 return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
82 int cx23885_s_register(struct file *file, void *fh,
83 const struct v4l2_dbg_register *reg)
85 struct cx23885_dev *dev = video_drvdata(file);
87 if (reg->match.addr > 1)
90 return cx23417_s_register(dev, reg);
92 if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
95 cx_write(reg->reg, reg->val);