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From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: Helen Koike <helen.koike@collabora.com>
Cc: devicetree@vger.kernel.org, eddie.cai.linux@gmail.com,
	kernel@collabora.com, heiko@sntech.de,
	jacob2.chen@rock-chips.com, jeffy.chen@rock-chips.com,
	zyc@rock-chips.com, linux-kernel@vger.kernel.org,
	tfiga@chromium.org, linux-rockchip@lists.infradead.org,
	Allon Huang <allon.huang@rock-chips.com>,
	Jacob Chen <cc@rock-chips.com>,
	hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com,
	zhengsq@rock-chips.com, mchehab@kernel.org,
	ezequiel@collabora.com, linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org
Subject: Re: [PATCH v8 09/14] media: rkisp1: add rockchip isp1 core driver
Date: Wed, 7 Aug 2019 18:36:46 +0300
Message-ID: <20190807153646.GO21370@paasikivi.fi.intel.com> (raw)
In-Reply-To: <20190730184256.30338-10-helen.koike@collabora.com>

Hi Helen,

On Tue, Jul 30, 2019 at 03:42:51PM -0300, Helen Koike wrote:

...

> +static int rkisp1_fwnode_parse(struct device *dev,
> +			       struct v4l2_fwnode_endpoint *vep,
> +			       struct v4l2_async_subdev *asd)
> +{
> +	struct sensor_async_subdev *s_asd =
> +			container_of(asd, struct sensor_async_subdev, asd);
> +
> +	if (vep->bus_type != V4L2_MBUS_CSI2_DPHY) {
> +		dev_err(dev, "Only CSI2 bus type is currently supported\n");
> +		return -EINVAL;
> +	}
> +
> +	if (vep->base.port != 0) {
> +		dev_err(dev, "The ISP has only port 0\n");
> +		return -EINVAL;
> +	}
> +
> +	s_asd->mbus.type = vep->bus_type;
> +	s_asd->mbus.flags = vep->bus.mipi_csi2.flags;
> +	s_asd->lanes = vep->bus.mipi_csi2.num_data_lanes;
> +
> +	switch (vep->bus.mipi_csi2.num_data_lanes) {
> +	case 1:
> +		s_asd->mbus.flags |= V4L2_MBUS_CSI2_1_LANE;
> +		break;
> +	case 2:
> +		s_asd->mbus.flags |= V4L2_MBUS_CSI2_2_LANE;
> +		break;
> +	case 3:
> +		s_asd->mbus.flags |= V4L2_MBUS_CSI2_3_LANE;
> +		break;
> +	case 4:
> +		s_asd->mbus.flags |= V4L2_MBUS_CSI2_4_LANE;
> +		break;

Could you use struct v4l2_fwnode_endpoint directly? The mbus config is a
legacy struct from bygone times and I'd like to avoid using it in new
drivers.

> +	default:
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
> +	.bound = subdev_notifier_bound,
> +	.unbind = subdev_notifier_unbind,
> +	.complete = subdev_notifier_complete,
> +};
> +
> +static int isp_subdev_notifier(struct rkisp1_device *isp_dev)
> +{
> +	struct v4l2_async_notifier *ntf = &isp_dev->notifier;
> +	struct device *dev = isp_dev->dev;
> +	int ret;
> +
> +	v4l2_async_notifier_init(ntf);
> +
> +	ret = v4l2_async_notifier_parse_fwnode_endpoints_by_port(
> +		dev, ntf, sizeof(struct sensor_async_subdev), 0,
> +		rkisp1_fwnode_parse);

I know these functions aren't old but there's a better alternative. See
e.g. isp_parse_of_endpoints in drivers/media/platform/omap3isp/isp.c or
cio2_parse_firmware in drivers/media/pci/intel/ipu3/ipu3-cio2.c.

> +	if (ret < 0)
> +		return ret;
> +
> +	if (list_empty(&ntf->asd_list))
> +		return -ENODEV;	/* no endpoint */
> +
> +	ntf->ops = &subdev_notifier_ops;
> +
> +	return v4l2_async_notifier_register(&isp_dev->v4l2_dev, ntf);
> +}

-- 
Sakari Ailus
sakari.ailus@linux.intel.com

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  parent reply index

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-30 18:42 [PATCH v8 00/14] Rockchip ISP1 Driver Helen Koike
2019-07-30 18:42 ` [PATCH v8 01/14] media: videodev2.h, v4l2-ioctl: add rkisp1 meta buffer format Helen Koike
2019-08-15 13:30   ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 02/14] media: doc: add document for " Helen Koike
2019-08-07 13:09   ` Sakari Ailus
2019-08-15 13:51   ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 03/14] media: rkisp1: Add user space ABI definitions Helen Koike
2019-08-15 18:46   ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 04/14] media: rkisp1: add Rockchip MIPI Synopsys DPHY driver Helen Koike
2019-08-07 13:05   ` Sakari Ailus
2019-08-07 13:37     ` Helen Koike
2019-08-15 17:54       ` Laurent Pinchart
2019-08-15 18:26         ` Heiko Stübner
2019-08-21 21:46         ` Helen Koike
2019-08-22  2:32           ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 05/14] media: rkisp1: add Rockchip ISP1 subdev driver Helen Koike
2019-08-06 18:51   ` Helen Koike
2019-08-07 10:39     ` Hans Verkuil
2019-08-15 19:35       ` Laurent Pinchart
2019-08-08  9:14   ` Sakari Ailus
2019-08-15  0:58     ` Helen Koike
2019-08-15  8:24       ` Sakari Ailus
2019-08-15 10:29         ` Tomasz Figa
2019-08-15 10:45           ` Sakari Ailus
2019-08-15 13:17         ` Sakari Ailus
2019-08-16  0:13   ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 06/14] media: rkisp1: add ISP1 statistics driver Helen Koike
2019-08-08  9:37   ` Sakari Ailus
2019-07-30 18:42 ` [PATCH v8 07/14] media: rkisp1: add ISP1 params driver Helen Koike
2019-07-30 18:42 ` [PATCH v8 09/14] media: rkisp1: add rockchip isp1 core driver Helen Koike
2019-08-07 15:27   ` Sakari Ailus
2019-08-08 21:59     ` Helen Koike
2019-08-09 12:05       ` Sakari Ailus
2019-08-07 15:36   ` Sakari Ailus [this message]
2019-07-30 18:42 ` [PATCH v8 10/14] dt-bindings: Document the Rockchip ISP1 bindings Helen Koike
2019-08-16  0:21   ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 11/14] dt-bindings: Document the Rockchip MIPI RX D-PHY bindings Helen Koike
2019-08-15 18:14   ` Laurent Pinchart
2019-07-30 18:42 ` [PATCH v8 12/14] arm64: dts: rockchip: add isp0 node for rk3399 Helen Koike
2019-07-30 18:42 ` [PATCH v8 13/14] arm64: dts: rockchip: add rx0 mipi-phy " Helen Koike
2019-07-30 18:42 ` [PATCH v8 14/14] MAINTAINERS: add entry for Rockchip ISP1 driver Helen Koike
2019-08-15 13:56   ` Laurent Pinchart
2019-07-30 20:15 ` [PATCH v8 00/14] Rockchip ISP1 Driver Hans Verkuil
2019-07-30 20:50   ` Helen Koike
2019-07-31  0:08     ` Helen Koike
2019-07-31  4:29       ` Hans Verkuil
2019-07-31  4:33         ` Hans Verkuil
2019-07-31  4:55           ` Hans Verkuil
2019-07-31 14:42             ` Helen Koike
2019-08-07 15:37 ` Sakari Ailus
2019-08-07 17:57   ` Helen Koike
2019-08-09 18:45 ` Manivannan Sadhasivam

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