/* Calls i2c device based on I2C driver ID. */
int cx18_i2c_id(struct cx18 *cx, u32 id, unsigned int cmd, void *arg)
{
int addr;
addr = cx18_i2c_id_addr(cx, id);
if (addr < 0) {
if (cmd != VIDIOC_G_CHIP_IDENT)
CX18_ERR("i2c ID 0x%08x (%s) not found for cmd 0x%x!\n",
id, cx18_i2c_id_name(id), cmd);
return addr;
}
return cx18_call_i2c_client(cx, addr, cmd, arg);
}
static int cx18_s_register(struct file *file, void *fh,
struct v4l2_register *reg)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
return cx18_cxc(cx, VIDIOC_DBG_S_REGISTER, reg);
if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
return cx18_i2c_id(cx, reg->match_chip, VIDIOC_DBG_S_REGISTER,
reg);
return cx18_call_i2c_client(cx, reg->match_chip, VIDIOC_DBG_S_REGISTER,
reg);
}
/* Calls i2c device based on CX18_HW_ flag. If hw == 0, then do nothing.
If hw == CX18_HW_GPIO then call the gpio handler. */
int cx18_i2c_hw(struct cx18 *cx, u32 hw, unsigned int cmd, void *arg)
{
int addr;
if (hw == CX18_HW_GPIO || hw == 0)
return 0;
if (hw == CX18_HW_CX23418)
return cx18_av_cmd(cx, cmd, arg);
addr = cx18_i2c_hw_addr(cx, hw);
if (addr < 0) {
CX18_ERR("i2c hardware 0x%08x (%s) not found for cmd 0x%x!\n",
hw, cx18_i2c_hw_name(hw), cmd);
return addr;
}
return cx18_call_i2c_client(cx, addr, cmd, arg);
}
static int cx18_g_chip_ident(struct file *file, void *fh,
struct v4l2_chip_ident *chip)
{
struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
chip->ident = V4L2_IDENT_NONE;
chip->revision = 0;
if (chip->match_type == V4L2_CHIP_MATCH_HOST) {
if (v4l2_chip_match_host(chip->match_type, chip->match_chip))
chip->ident = V4L2_IDENT_CX23418;
return 0;
}
if (chip->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
return cx18_i2c_id(cx, chip->match_chip, VIDIOC_G_CHIP_IDENT,
chip);
if (chip->match_type == V4L2_CHIP_MATCH_I2C_ADDR)
return cx18_call_i2c_client(cx, chip->match_chip,
VIDIOC_G_CHIP_IDENT, chip);
return -EINVAL;
}
