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From: Jacopo Mondi <jacopo+renesas@jmondi.org>
To: laurent.pinchart@ideasonboard.com,
	niklas.soderlund+renesas@ragnatech.se,
	kieran.bingham@ideasonboard.com
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>,
	linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Subject: [PATCH v3 5/6] media: adv748x: Store the TX sink in HDMI/AFE
Date: Thu, 10 Jan 2019 15:02:12 +0100
Message-ID: <20190110140213.5198-6-jacopo+renesas@jmondi.org> (raw)
In-Reply-To: <20190110140213.5198-1-jacopo+renesas@jmondi.org>

Both the AFE and HDMI s_stream routines (adv748x_afe_s_stream() and
adv748x_hdmi_s_stream()) have to enable the CSI-2 TX they are streaming video
data to.

With the introduction of dynamic routing between HDMI and AFE entities to
TXA, the video stream sink needs to be set at run time, and not statically
selected as the s_stream functions are currently doing.

To fix this, store a reference to the active CSI-2 TX sink for both HDMI and
AFE sources, and operate on it when starting/stopping the stream.

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 drivers/media/i2c/adv748x/adv748x-afe.c  |  2 +-
 drivers/media/i2c/adv748x/adv748x-csi2.c | 15 +++++++++++++--
 drivers/media/i2c/adv748x/adv748x-hdmi.c |  2 +-
 drivers/media/i2c/adv748x/adv748x.h      |  4 ++++
 4 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/drivers/media/i2c/adv748x/adv748x-afe.c b/drivers/media/i2c/adv748x/adv748x-afe.c
index 71714634efb0..dbbb1e4d6363 100644
--- a/drivers/media/i2c/adv748x/adv748x-afe.c
+++ b/drivers/media/i2c/adv748x/adv748x-afe.c
@@ -282,7 +282,7 @@ static int adv748x_afe_s_stream(struct v4l2_subdev *sd, int enable)
 			goto unlock;
 	}
 
-	ret = adv748x_tx_power(&state->txb, enable);
+	ret = adv748x_tx_power(afe->tx, enable);
 	if (ret)
 		goto unlock;
 
diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c
index 353b6b9bf6a7..2091cda50935 100644
--- a/drivers/media/i2c/adv748x/adv748x-csi2.c
+++ b/drivers/media/i2c/adv748x/adv748x-csi2.c
@@ -88,14 +88,25 @@ static int adv748x_csi2_registered(struct v4l2_subdev *sd)
 						 is_txb(tx));
 		if (ret)
 			return ret;
+
+		/* TXB can output AFE signals only. */
+		if (is_txb(tx))
+			state->afe.tx = tx;
 	}
 
 	/* Register link to HDMI for TXA only. */
 	if (is_txb(tx) || !is_hdmi_enabled(state))
 		return 0;
 
-	return adv748x_csi2_register_link(tx, sd->v4l2_dev, &state->hdmi.sd,
-					  ADV748X_HDMI_SOURCE, true);
+	ret = adv748x_csi2_register_link(tx, sd->v4l2_dev, &state->hdmi.sd,
+					 ADV748X_HDMI_SOURCE, true);
+	if (ret)
+		return ret;
+
+	/* The default HDMI output is TXA. */
+	state->hdmi.tx = tx;
+
+	return 0;
 }
 
 static const struct v4l2_subdev_internal_ops adv748x_csi2_internal_ops = {
diff --git a/drivers/media/i2c/adv748x/adv748x-hdmi.c b/drivers/media/i2c/adv748x/adv748x-hdmi.c
index 35d027941482..c557f8fdf11a 100644
--- a/drivers/media/i2c/adv748x/adv748x-hdmi.c
+++ b/drivers/media/i2c/adv748x/adv748x-hdmi.c
@@ -358,7 +358,7 @@ static int adv748x_hdmi_s_stream(struct v4l2_subdev *sd, int enable)
 
 	mutex_lock(&state->mutex);
 
-	ret = adv748x_tx_power(&state->txa, enable);
+	ret = adv748x_tx_power(hdmi->tx, enable);
 	if (ret)
 		goto done;
 
diff --git a/drivers/media/i2c/adv748x/adv748x.h b/drivers/media/i2c/adv748x/adv748x.h
index d22270f5e2c1..934a9d9a75c8 100644
--- a/drivers/media/i2c/adv748x/adv748x.h
+++ b/drivers/media/i2c/adv748x/adv748x.h
@@ -121,6 +121,8 @@ struct adv748x_hdmi {
 	struct v4l2_dv_timings timings;
 	struct v4l2_fract aspect_ratio;
 
+	struct adv748x_csi2 *tx;
+
 	struct {
 		u8 edid[512];
 		u32 present;
@@ -151,6 +153,8 @@ struct adv748x_afe {
 	struct v4l2_subdev sd;
 	struct v4l2_mbus_framefmt format;
 
+	struct adv748x_csi2 *tx;
+
 	bool streaming;
 	v4l2_std_id curr_norm;
 	unsigned int input;
-- 
2.20.1


  parent reply index

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-10 14:02 [PATCH v3 0/6] media: adv748x: Implement dynamic routing support Jacopo Mondi
2019-01-10 14:02 ` [PATCH v3 1/6] media: adv748x: Add is_txb() Jacopo Mondi
2019-01-14 14:47   ` Niklas Söderlund
2019-01-10 14:02 ` [PATCH v3 2/6] media: adv748x: Rename reset procedures Jacopo Mondi
2019-01-14 14:49   ` Niklas Söderlund
2019-01-10 14:02 ` [PATCH v3 3/6] media: adv748x: csi2: Link AFE with TXA and TXB Jacopo Mondi
2019-01-14 14:55   ` Niklas Söderlund
2019-01-16  9:10     ` Jacopo Mondi
2019-01-16 12:28       ` Niklas Söderlund
2019-01-16 13:44     ` Niklas Söderlund
2019-01-28 14:47       ` Jacopo Mondi
2019-02-07 15:57         ` Niklas Söderlund
2019-01-10 14:02 ` [PATCH v3 4/6] media: adv748x: Store the source subdevice in TX Jacopo Mondi
2019-01-16 13:33   ` Niklas Söderlund
2019-01-10 14:02 ` Jacopo Mondi [this message]
2019-01-16 13:45   ` [PATCH v3 5/6] media: adv748x: Store the TX sink in HDMI/AFE Niklas Söderlund
2019-01-10 14:02 ` [PATCH v3 6/6] media: adv748x: Implement TX link_setup callback Jacopo Mondi
2019-01-10 14:36   ` Kieran Bingham
2019-01-16 13:46   ` Niklas Söderlund
2019-01-14 14:22 ` [PATCH v3 0/6] media: adv748x: Implement dynamic routing support Kieran Bingham

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