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: Josh Wu <hidden>
Date: 2015-09-18 11:14:06
Also in: linux-media

Hi, Guennadi

On 9/18/2015 5:44 PM, Guennadi Liakhovetski wrote:
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,
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.

Best Regards,
Josh Wu
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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