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