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Mon, 7 Jan 2019 05:41:24 -0500 Received: from [192.168.0.21] (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 93D49530; Mon, 7 Jan 2019 11:41:21 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1546857681; bh=nzBXZttsMLqChmilUYD63wdTlkkHq75oSHf5zqdnql0=; h=Reply-To:Subject:To:Cc:References:From:Date:In-Reply-To:From; b=UVw+peQz2PScFq3Br+EuQRLHXydHNYjeicSUbKV/h9aTESYGri7sW9o5yub6TiKMj 1B05lMNu1SBtE52pVCdMA+R88GnXD7ScKDzK1YFcVDOOevYeqGluP0bJ9Q6U0//Mq7 44AfwXGEhcEx2/xxtXmA6zK64uE5q4SYp2hxUQNs= Reply-To: kieran.bingham@ideasonboard.com Subject: Re: [PATCH v2 4/6] media: adv748x: Store the source subdevice in TX To: Jacopo Mondi , laurent.pinchart@ideasonboard.com, niklas.soderlund+renesas@ragnatech.se Cc: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org References: <20190106155413.30666-1-jacopo+renesas@jmondi.org> <20190106155413.30666-5-jacopo+renesas@jmondi.org> From: Kieran Bingham Openpgp: preference=signencrypt Autocrypt: addr=kieran.bingham@ideasonboard.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20190106155413.30666-5-jacopo+renesas@jmondi.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Hi Jacopo, On 06/01/2019 15:54, Jacopo Mondi wrote: > 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: Kieran Bingham > Reviewed-by: Laurent Pinchart > Signed-off-by: Jacopo Mondi > --- > 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; > }; > > -- Regards -- Kieran