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authorLars-Peter Clausen <lars@metafoo.de>2015-01-23 12:52:33 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-02-02 11:51:38 -0200
commit08b717c2ae8b7e23e1d018dad601fdf12bde3a96 (patch)
tree92a7168ca490dbfa7ead2d1f70edf2bb7401e414 /drivers/media/i2c
parent851a54effbd808daf8b961f1dc6156c06a96d5f1 (diff)
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[media] adv7180: Add fast switch support
In fast switch mode the adv7180 (and similar) can lock onto a new signal faster when switching between different inputs. As a downside though it is no longer able to auto-detect the incoming format. The fast switch mode is exposed as a boolean v4l control that allows userspace applications to either enable or disable fast switch mode. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Federico Vaga <federico.vaga@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/i2c')
-rw-r--r--drivers/media/i2c/adv7180.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 3c1c866d1e3c..b75878c27c2a 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -127,6 +127,9 @@
#define ADV7180_REG_VPP_SLAVE_ADDR 0xFD
#define ADV7180_REG_CSI_SLAVE_ADDR 0xFE
+#define ADV7180_REG_FLCONTROL 0x40e0
+#define ADV7180_FLCONTROL_FL_ENABLE 0x1
+
#define ADV7180_CSI_REG_PWRDN 0x00
#define ADV7180_CSI_PWRDN 0x80
@@ -164,6 +167,8 @@
#define ADV7180_DEFAULT_CSI_I2C_ADDR 0x44
#define ADV7180_DEFAULT_VPP_I2C_ADDR 0x42
+#define V4L2_CID_ADV_FAST_SWITCH (V4L2_CID_USER_ADV7180_BASE + 0x00)
+
struct adv7180_state;
#define ADV7180_FLAG_RESET_POWERED BIT(0)
@@ -508,6 +513,18 @@ static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl)
break;
ret = adv7180_write(state, ADV7180_REG_SD_SAT_CR, val);
break;
+ case V4L2_CID_ADV_FAST_SWITCH:
+ if (ctrl->val) {
+ /* ADI required write */
+ adv7180_write(state, 0x80d9, 0x44);
+ adv7180_write(state, ADV7180_REG_FLCONTROL,
+ ADV7180_FLCONTROL_FL_ENABLE);
+ } else {
+ /* ADI required write */
+ adv7180_write(state, 0x80d9, 0xc4);
+ adv7180_write(state, ADV7180_REG_FLCONTROL, 0x00);
+ }
+ break;
default:
ret = -EINVAL;
}
@@ -520,6 +537,16 @@ static const struct v4l2_ctrl_ops adv7180_ctrl_ops = {
.s_ctrl = adv7180_s_ctrl,
};
+static const struct v4l2_ctrl_config adv7180_ctrl_fast_switch = {
+ .ops = &adv7180_ctrl_ops,
+ .id = V4L2_CID_ADV_FAST_SWITCH,
+ .name = "Fast Switching",
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .min = 0,
+ .max = 1,
+ .step = 1,
+};
+
static int adv7180_init_controls(struct adv7180_state *state)
{
v4l2_ctrl_handler_init(&state->ctrl_hdl, 4);
@@ -536,6 +563,8 @@ static int adv7180_init_controls(struct adv7180_state *state)
v4l2_ctrl_new_std(&state->ctrl_hdl, &adv7180_ctrl_ops,
V4L2_CID_HUE, ADV7180_HUE_MIN,
ADV7180_HUE_MAX, 1, ADV7180_HUE_DEF);
+ v4l2_ctrl_new_custom(&state->ctrl_hdl, &adv7180_ctrl_fast_switch, NULL);
+
state->sd.ctrl_handler = &state->ctrl_hdl;
if (state->ctrl_hdl.error) {
int err = state->ctrl_hdl.error;