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authorWilliam Towle <william.towle@codethink.co.uk>2015-07-23 09:21:34 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-08-11 09:54:50 -0300
commit7111cddd518f7d51d72118b3cb42a8c6d3a00401 (patch)
treef9349d59e12688c4cbeb395671449e1894cf1419 /drivers/media/i2c
parentc1362384a85e429cd4e6f5fd65f130770224bcef (diff)
[media] media: adv7604: reduce support to first (digital) input
Using adv7611_read_cable_det() for ADV7612 means that full support for '.max_port = ADV7604_PAD_HDMI_PORT_B,' isn't available due to the need for multiple port reads to determine cable detection, and an agreed mechanism for communicating the separate statuses. This patch replaces adv7611_read_cable_det() with a functionally identical copy, commented appropriately. Earlier submissions [leading to commit 8331d30b] also set .cp_csc, which is used in a cp_read() call within adv76xx_log_status(). Signed-off-by: William Towle <william.towle@codethink.co.uk> 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/adv7604.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 0587d2755809..2524184f4987 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -877,6 +877,16 @@ static unsigned int adv7611_read_cable_det(struct v4l2_subdev *sd)
return value & 1;
}
+static unsigned int adv7612_read_cable_det(struct v4l2_subdev *sd)
+{
+ /* Reads CABLE_DET_A_RAW. For input B support, need to
+ * account for bit 7 [MSB] of 0x6a (ie. CABLE_DET_B_RAW)
+ */
+ u8 value = io_read(sd, 0x6f);
+
+ return value & 1;
+}
+
static int adv76xx_s_detect_tx_5v_ctrl(struct v4l2_subdev *sd)
{
struct adv76xx_state *state = to_state(sd);
@@ -2728,20 +2738,21 @@ static const struct adv76xx_chip_info adv76xx_chip_info[] = {
[ADV7612] = {
.type = ADV7612,
.has_afe = false,
- .max_port = ADV7604_PAD_HDMI_PORT_B,
- .num_dv_ports = 2,
+ .max_port = ADV76XX_PAD_HDMI_PORT_A, /* B not supported */
+ .num_dv_ports = 1, /* normally 2 */
.edid_enable_reg = 0x74,
.edid_status_reg = 0x76,
.lcf_reg = 0xa3,
.tdms_lock_mask = 0x43,
.cable_det_mask = 0x01,
.fmt_change_digital_mask = 0x03,
+ .cp_csc = 0xf4,
.formats = adv7612_formats,
.nformats = ARRAY_SIZE(adv7612_formats),
.set_termination = adv7611_set_termination,
.setup_irqs = adv7612_setup_irqs,
.read_hdmi_pixelclock = adv7611_read_hdmi_pixelclock,
- .read_cable_det = adv7611_read_cable_det,
+ .read_cable_det = adv7612_read_cable_det,
.recommended_settings = {
[1] = adv7612_recommended_settings_hdmi,
},

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