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authorDave Airlie <airlied@redhat.com>2018-07-27 12:16:34 +1000
committerDave Airlie <airlied@redhat.com>2018-07-27 12:17:31 +1000
commit050d2a5533af362932553cb47fd5db9a3476074e (patch)
tree126b376bee803d0871717edd823208abafd3dcd0
parent5a75cd11a8998a1859533ffeba23e613f85c3991 (diff)
parentbbe4a089e299efe696ef520e58513c12c0d497c9 (diff)
Merge tag 'imx-drm-fixes-2018-07-20' of git://git.pengutronix.de/git/pza/linux into drm-fixes
drm/imx: imx-drm ldb and ipu-v3 csi fixes - Disable the LVDS Display Bridge (LDB) on driver bind. This is necessary to guarantee correct LVDS signals in case the bootloader left the LVDS output active. - Remove false positive warning about disabled second LVDS channel in dual-channel mode. In this mode, the second LVDS channel can not be used separately. If the second channel is correctly described as disabled in the device tree, the driver warned about this anyway. - Fix the CSI confiuration to not only enable interlaced capture mode for V4L2_FIELD_SEQ_BT and V4L2_FIELD_SEQ_TB, but also for the V4L2_FIELD_ALTERNATE interlacing mode. Before, it incorrectly tried to capture progressive frames in that case. Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/1532100423.3438.8.camel@pengutronix.de
-rw-r--r--drivers/gpu/drm/imx/imx-ldb.c9
-rw-r--r--drivers/gpu/ipu-v3/ipu-csi.c3
2 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 56dd7a9a8e25..dd5312b02a8d 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -612,6 +612,9 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
return PTR_ERR(imx_ldb->regmap);
}
+ /* disable LDB by resetting the control register to POR default */
+ regmap_write(imx_ldb->regmap, IOMUXC_GPR2, 0);
+
imx_ldb->dev = dev;
if (of_id)
@@ -652,14 +655,14 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
if (ret || i < 0 || i > 1)
return -EINVAL;
+ if (!of_device_is_available(child))
+ continue;
+
if (dual && i > 0) {
dev_warn(dev, "dual-channel mode, ignoring second output\n");
continue;
}
- if (!of_device_is_available(child))
- continue;
-
channel = &imx_ldb->channel[i];
channel->ldb = imx_ldb;
channel->chno = i;
diff --git a/drivers/gpu/ipu-v3/ipu-csi.c b/drivers/gpu/ipu-v3/ipu-csi.c
index caa05b0702e1..5450a2db1219 100644
--- a/drivers/gpu/ipu-v3/ipu-csi.c
+++ b/drivers/gpu/ipu-v3/ipu-csi.c
@@ -339,7 +339,8 @@ static void fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
break;
case V4L2_MBUS_BT656:
csicfg->ext_vsync = 0;
- if (V4L2_FIELD_HAS_BOTH(mbus_fmt->field))
+ if (V4L2_FIELD_HAS_BOTH(mbus_fmt->field) ||
+ mbus_fmt->field == V4L2_FIELD_ALTERNATE)
csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_INTERLACED;
else
csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE;