summaryrefslogtreecommitdiff
path: root/drivers/media/pci/cx23885/cx23885-ioctl.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/pci/cx23885/cx23885-ioctl.c')
-rw-r--r--drivers/media/pci/cx23885/cx23885-ioctl.c208
1 files changed, 208 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 000000000000..44812ca78899
--- /dev/null
+++ b/drivers/media/pci/cx23885/cx23885-ioctl.c
@@ -0,0 +1,208 @@
+/*
+ * Driver for the Conexant CX23885/7/8 PCIe bridge
+ *
+ * Various common ioctl() support functions
+ *
+ * Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "cx23885.h"
+#include <media/v4l2-chip-ident.h>
+
+int cx23885_g_chip_ident(struct file *file, void *fh,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
+ int err = 0;
+ u8 rev;
+
+ chip->ident = V4L2_IDENT_NONE;
+ chip->revision = 0;
+ switch (chip->match.type) {
+ case V4L2_CHIP_MATCH_HOST:
+ switch (chip->match.addr) {
+ case 0:
+ rev = cx_read(RDR_CFG2) & 0xff;
+ switch (dev->pci->device) {
+ case 0x8852:
+ /* rev 0x04 could be '885 or '888. Pick '888. */
+ if (rev == 0x04)
+ chip->ident = V4L2_IDENT_CX23888;
+ else
+ chip->ident = V4L2_IDENT_CX23885;
+ break;
+ case 0x8880:
+ if (rev == 0x0e || rev == 0x0f)
+ chip->ident = V4L2_IDENT_CX23887;
+ else
+ chip->ident = V4L2_IDENT_CX23888;
+ break;
+ default:
+ chip->ident = V4L2_IDENT_UNKNOWN;
+ break;
+ }
+ chip->revision = (dev->pci->device << 16) | (rev << 8) |
+ (dev->hwrevision & 0xff);
+ break;
+ case 1:
+ if (dev->v4l_device != NULL) {
+ chip->ident = V4L2_IDENT_CX23417;
+ chip->revision = 0;
+ }
+ break;
+ case 2:
+ /*
+ * The integrated IR controller on the CX23888 is
+ * host chip 2. It may not be used/initialized or sd_ir
+ * may be pointing at the cx25840 subdevice for the
+ * IR controller on the CX23885. Thus we find it
+ * without using the dev->sd_ir pointer.
+ */
+ call_hw(dev, CX23885_HW_888_IR, core, g_chip_ident,
+ chip);
+ break;
+ default:
+ err = -EINVAL; /* per V4L2 spec */
+ break;
+ }
+ break;
+ case V4L2_CHIP_MATCH_I2C_DRIVER:
+ /* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
+ call_all(dev, core, g_chip_ident, chip);
+ break;
+ case V4L2_CHIP_MATCH_I2C_ADDR:
+ /*
+ * We could return V4L2_IDENT_UNKNOWN, but we don't do the work
+ * to look if a chip is at the address with no driver. That's a
+ * dangerous thing to do with EEPROMs anyway.
+ */
+ call_all(dev, core, g_chip_ident, chip);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ return err;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int cx23885_g_host_register(struct cx23885_dev *dev,
+ struct v4l2_dbg_register *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_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 = ((struct cx23885_fh *)fh)->dev;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
+ switch (reg->match.addr) {
+ case 0:
+ return cx23885_g_host_register(dev, reg);
+ case 1:
+ return cx23417_g_register(dev, reg);
+ default:
+ break;
+ }
+ }
+
+ /* FIXME - any error returns should not be ignored */
+ call_all(dev, core, g_register, reg);
+ return 0;
+}
+
+static int cx23885_s_host_register(struct cx23885_dev *dev,
+ struct v4l2_dbg_register *reg)
+{
+ if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
+ return -EINVAL;
+
+ reg->size = 4;
+ cx_write(reg->reg, reg->val);
+ return 0;
+}
+
+static int cx23417_s_register(struct cx23885_dev *dev,
+ 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 */
+
+ reg->size = 4;
+ return 0;
+}
+
+int cx23885_s_register(struct file *file, void *fh,
+ struct v4l2_dbg_register *reg)
+{
+ struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
+ switch (reg->match.addr) {
+ case 0:
+ return cx23885_s_host_register(dev, reg);
+ case 1:
+ return cx23417_s_register(dev, reg);
+ default:
+ break;
+ }
+ }
+
+ /* FIXME - any error returns should not be ignored */
+ call_all(dev, core, s_register, reg);
+ return 0;
+}
+#endif