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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
Subject: [PATCH v2 4/6] media: adv748x: Store the source subdevice in TX
Date: Sun,  6 Jan 2019 16:54:11 +0100	[thread overview]
Message-ID: <20190106155413.30666-5-jacopo+renesas@jmondi.org> (raw)
In-Reply-To: <20190106155413.30666-1-jacopo+renesas@jmondi.org>

The power_up_tx() procedure needs to set a few registers conditionally to
the selected video source, but it currently checks for the provided tx to
be either TXA or TXB.

With the introduction of dynamic routing between HDMI and AFE entities to
TXA, checking which TX the function is operating on is not meaningful anymore.

To fix this, store the subdevice of the source providing video data to the
CSI-2 TX in the 'struct adv748x_csi2' representing the TX and check on it.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
 drivers/media/i2c/adv748x/adv748x-core.c |  2 +-
 drivers/media/i2c/adv748x/adv748x-csi2.c | 13 ++++++++++---
 drivers/media/i2c/adv748x/adv748x.h      |  1 +
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/media/i2c/adv748x/adv748x-core.c b/drivers/media/i2c/adv748x/adv748x-core.c
index ad4e6424753a..200e00f93546 100644
--- a/drivers/media/i2c/adv748x/adv748x-core.c
+++ b/drivers/media/i2c/adv748x/adv748x-core.c
@@ -254,7 +254,7 @@ static int adv748x_power_up_tx(struct adv748x_csi2 *tx)
 	adv748x_write_check(state, page, 0x00, 0xa0 | tx->num_lanes, &ret);
 
 	/* ADI Required Write */
-	if (is_txa(tx)) {
+	if (tx->src == &state->hdmi.sd) {
 		adv748x_write_check(state, page, 0xdb, 0x10, &ret);
 		adv748x_write_check(state, page, 0xd6, 0x07, &ret);
 	} else {
diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c
index 9d391d6f752e..de3944615e64 100644
--- a/drivers/media/i2c/adv748x/adv748x-csi2.c
+++ b/drivers/media/i2c/adv748x/adv748x-csi2.c
@@ -46,9 +46,16 @@ static int adv748x_csi2_register_link(struct adv748x_csi2 *tx,
 			return ret;
 	}
 
-	return media_create_pad_link(&src->entity, src_pad,
-				     &tx->sd.entity, ADV748X_CSI2_SINK,
-				     enable ? MEDIA_LNK_FL_ENABLED : 0);
+	ret = media_create_pad_link(&src->entity, src_pad,
+				    &tx->sd.entity, ADV748X_CSI2_SINK,
+				    enable ? MEDIA_LNK_FL_ENABLED : 0);
+	if (ret)
+		return ret;
+
+	if (enable)
+		tx->src = src;
+
+	return 0;
 }
 
 /* -----------------------------------------------------------------------------
diff --git a/drivers/media/i2c/adv748x/adv748x.h b/drivers/media/i2c/adv748x/adv748x.h
index bc2da1b5ce29..d8d94053301b 100644
--- a/drivers/media/i2c/adv748x/adv748x.h
+++ b/drivers/media/i2c/adv748x/adv748x.h
@@ -84,6 +84,7 @@ struct adv748x_csi2 {
 	struct media_pad pads[ADV748X_CSI2_NR_PADS];
 	struct v4l2_ctrl_handler ctrl_hdl;
 	struct v4l2_ctrl *pixel_rate;
+	struct v4l2_subdev *src;
 	struct v4l2_subdev sd;
 };
 
-- 
2.20.1


  parent reply	other threads:[~2019-01-06 15:54 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-06 15:54 [PATCH v2 0/6] media: adv748x: Implement dynamic routing support Jacopo Mondi
2019-01-06 15:54 ` [PATCH v2 1/6] media: adv748x: Add is_txb() Jacopo Mondi
2019-01-07  9:49   ` Kieran Bingham
2019-01-07 10:05     ` Jacopo Mondi
2019-01-07 10:38       ` Kieran Bingham
2019-01-09  0:04         ` Laurent Pinchart
2019-01-06 15:54 ` [PATCH v2 2/6] media: adv748x: Rename reset procedures Jacopo Mondi
2019-01-07  9:59   ` Kieran Bingham
2019-01-06 15:54 ` [PATCH v2 3/6] media: adv748x: csi2: Link AFE with TXA and TXB Jacopo Mondi
2019-01-07 10:35   ` Kieran Bingham
2019-01-09  0:11   ` Laurent Pinchart
2019-01-06 15:54 ` Jacopo Mondi [this message]
2019-01-07 10:41   ` [PATCH v2 4/6] media: adv748x: Store the source subdevice in TX Kieran Bingham
2019-01-06 15:54 ` [PATCH v2 5/6] media: adv748x: Store the TX sink in HDMI/AFE Jacopo Mondi
2019-01-07 10:45   ` Kieran Bingham
2019-01-06 15:54 ` [PATCH v2 6/6] media: adv748x: Implement TX link_setup callback Jacopo Mondi
2019-01-07 12:36   ` Kieran Bingham
2019-01-09  0:15     ` Laurent Pinchart
2019-01-09 14:15       ` Kieran Bingham
2019-01-10  8:58         ` Jacopo Mondi
2019-01-10 10:05           ` Kieran Bingham
2019-01-10  8:51       ` Jacopo Mondi
2019-01-10  9:27         ` Laurent Pinchart
2019-01-09 14:17     ` Kieran Bingham
2019-01-10 10:01     ` Jacopo Mondi
2019-01-10 13:40     ` Jacopo Mondi

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