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path: root/drivers/media/pci/cx23885/cx23885-ioctl.c
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Diffstat (limited to 'drivers/media/pci/cx23885/cx23885-ioctl.c')
-rw-r--r--drivers/media/pci/cx23885/cx23885-ioctl.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/media/pci/cx23885/cx23885-ioctl.c b/drivers/media/pci/cx23885/cx23885-ioctl.c
new file mode 100644
index 000000000..a8ccad07c
--- /dev/null
+++ b/drivers/media/pci/cx23885/cx23885-ioctl.c
@@ -0,0 +1,98 @@
+// 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