Thread (6 messages) 6 messages, 4 authors, 2015-09-18

[PATCH v3] media: atmel-isi: parse the DT parameters for vsync/hsync/pixclock polarity

From: Guennadi Liakhovetski <hidden>
Date: 2015-09-18 11:21:55
Also in: linux-media

Hi Josh,

On Fri, 18 Sep 2015, Josh Wu wrote:
Hi, Guennadi

On 9/18/2015 5:44 PM, Guennadi Liakhovetski wrote:
quoted
Hi Nicolas,

Patch handling is on my todo for the coming weekend...
Beside this patch, Atmel-isi still have server other patches in the patchwork
for a long time. So some patch may need to rebase.

Just for your convenience I create a branch here:
https://github.com/JoshWu/linux-at91/commits/atmel-isi-v4.3,
Thanks, that will help!
which collected all the Atmel-isi patches that still not merged. You can take
it as a reference.

Of cause, if you want I can sent out a pull request for it. thanks.
No need, the branch info above should be enough.

Thanks
Guennadi
Best Regards,
Josh Wu
quoted
Thanks
Guennadi

On Fri, 18 Sep 2015, Nicolas Ferre wrote:
quoted
Le 04/08/2015 13:22, Laurent Pinchart a ?crit :
quoted
Hi Josh,

Thank you for the patch.

On Tuesday 04 August 2015 17:37:49 Josh Wu wrote:
quoted
This patch will get the DT parameters of vsync/hsync/pixclock
polarity, and
pass to driver.

Also add a debug information for test purpose.

Signed-off-by: Josh Wu <redacted>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Guennadi, Mauro,

I don't see this patch in Linux-next and I'm not so used to
http://git.linuxtv.org but didn't find it either.

Well in fact it's just a lengthy version of "ping" ;-)

Bye,
quoted
quoted
---

Changes in v3:
- add embedded sync dt property support.

Changes in v2:
- rewrite the debug message and add pix clock polarity setup thanks to
   Laurent.
- update the commit log.

  drivers/media/platform/soc_camera/atmel-isi.c | 15 +++++++++++++++
  1 file changed, 15 insertions(+)
diff --git a/drivers/media/platform/soc_camera/atmel-isi.c
b/drivers/media/platform/soc_camera/atmel-isi.c index fead841..4efc939
100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -1061,6 +1061,11 @@ static int isi_camera_set_bus_param(struct
soc_camera_device *icd) if (common_flags &
V4L2_MBUS_PCLK_SAMPLE_FALLING)
  		cfg1 |= ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING;

+	dev_dbg(icd->parent, "vsync active %s, hsync active %s,
sampling on pix
clock %s edge\n", +		common_flags &
V4L2_MBUS_VSYNC_ACTIVE_LOW ? "low" :
"high",
+		common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? "low" :
"high",
+		common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING ?
"falling" : "rising");
+
  	if (isi->pdata.has_emb_sync)
  		cfg1 |= ISI_CFG1_EMB_SYNC;
  	if (isi->pdata.full_mode)
@@ -1148,6 +1153,16 @@ static int atmel_isi_parse_dt(struct atmel_isi
*isi,
  		return -EINVAL;
  	}

+	if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+		isi->pdata.hsync_act_low = true;
+	if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+		isi->pdata.vsync_act_low = true;
+	if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
+		isi->pdata.pclk_act_falling = true;
+
+	if (ep.bus_type == V4L2_MBUS_BT656)
+		isi->pdata.has_emb_sync = true;
+
  	return 0;
  }
-- 
Nicolas Ferre
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