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1d6629b156
This patch converts the drivers in drivers/media/* to use the module_platform_driver() macro which makes the code smaller and a bit simpler. Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: "Richard Röjfors" <richard.rojfors@pelagicore.com> Cc: "Matti J. Aaltonen" <matti.j.aaltonen@nokia.com> Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: Manjunath Hadli <manjunath.hadli@ti.com> Cc: Muralidharan Karicheri <m-karicheri2@ti.com> Cc: Anatolij Gustschin <agust@denx.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Daniel Drake <dsd@laptop.org> Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
198 lines
5.0 KiB
C
198 lines
5.0 KiB
C
/*
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* Generic Platform Camera Driver
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*
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* Copyright (C) 2008 Magnus Damm
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* Based on mt9m001 driver,
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* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-subdev.h>
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#include <media/soc_camera.h>
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#include <media/soc_camera_platform.h>
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struct soc_camera_platform_priv {
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struct v4l2_subdev subdev;
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};
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static struct soc_camera_platform_priv *get_priv(struct platform_device *pdev)
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{
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struct v4l2_subdev *subdev = platform_get_drvdata(pdev);
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return container_of(subdev, struct soc_camera_platform_priv, subdev);
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}
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static int soc_camera_platform_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
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return p->set_capture(p, enable);
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}
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static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd,
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struct v4l2_mbus_framefmt *mf)
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{
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
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mf->width = p->format.width;
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mf->height = p->format.height;
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mf->code = p->format.code;
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mf->colorspace = p->format.colorspace;
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mf->field = p->format.field;
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return 0;
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}
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static struct v4l2_subdev_core_ops platform_subdev_core_ops;
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static int soc_camera_platform_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
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enum v4l2_mbus_pixelcode *code)
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{
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
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if (index)
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return -EINVAL;
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*code = p->format.code;
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return 0;
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}
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static int soc_camera_platform_g_crop(struct v4l2_subdev *sd,
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struct v4l2_crop *a)
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{
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
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a->c.left = 0;
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a->c.top = 0;
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a->c.width = p->format.width;
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a->c.height = p->format.height;
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a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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return 0;
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}
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static int soc_camera_platform_cropcap(struct v4l2_subdev *sd,
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struct v4l2_cropcap *a)
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{
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
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a->bounds.left = 0;
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a->bounds.top = 0;
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a->bounds.width = p->format.width;
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a->bounds.height = p->format.height;
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a->defrect = a->bounds;
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a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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a->pixelaspect.numerator = 1;
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a->pixelaspect.denominator = 1;
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return 0;
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}
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static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd,
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struct v4l2_mbus_config *cfg)
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{
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
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cfg->flags = p->mbus_param;
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cfg->type = p->mbus_type;
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return 0;
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}
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static struct v4l2_subdev_video_ops platform_subdev_video_ops = {
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.s_stream = soc_camera_platform_s_stream,
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.enum_mbus_fmt = soc_camera_platform_enum_fmt,
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.cropcap = soc_camera_platform_cropcap,
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.g_crop = soc_camera_platform_g_crop,
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.try_mbus_fmt = soc_camera_platform_fill_fmt,
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.g_mbus_fmt = soc_camera_platform_fill_fmt,
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.s_mbus_fmt = soc_camera_platform_fill_fmt,
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.g_mbus_config = soc_camera_platform_g_mbus_config,
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};
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static struct v4l2_subdev_ops platform_subdev_ops = {
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.core = &platform_subdev_core_ops,
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.video = &platform_subdev_video_ops,
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};
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static int soc_camera_platform_probe(struct platform_device *pdev)
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{
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struct soc_camera_host *ici;
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struct soc_camera_platform_priv *priv;
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struct soc_camera_platform_info *p = pdev->dev.platform_data;
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struct soc_camera_device *icd;
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int ret;
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if (!p)
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return -EINVAL;
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if (!p->icd) {
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dev_err(&pdev->dev,
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"Platform has not set soc_camera_device pointer!\n");
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return -EINVAL;
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}
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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icd = p->icd;
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/* soc-camera convention: control's drvdata points to the subdev */
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platform_set_drvdata(pdev, &priv->subdev);
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/* Set the control device reference */
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icd->control = &pdev->dev;
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ici = to_soc_camera_host(icd->parent);
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v4l2_subdev_init(&priv->subdev, &platform_subdev_ops);
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v4l2_set_subdevdata(&priv->subdev, p);
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strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE);
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ret = v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev);
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if (ret)
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goto evdrs;
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return ret;
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evdrs:
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platform_set_drvdata(pdev, NULL);
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kfree(priv);
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return ret;
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}
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static int soc_camera_platform_remove(struct platform_device *pdev)
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{
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struct soc_camera_platform_priv *priv = get_priv(pdev);
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struct soc_camera_platform_info *p = v4l2_get_subdevdata(&priv->subdev);
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p->icd->control = NULL;
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v4l2_device_unregister_subdev(&priv->subdev);
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platform_set_drvdata(pdev, NULL);
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kfree(priv);
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return 0;
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}
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static struct platform_driver soc_camera_platform_driver = {
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.driver = {
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.name = "soc_camera_platform",
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.owner = THIS_MODULE,
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},
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.probe = soc_camera_platform_probe,
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.remove = soc_camera_platform_remove,
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};
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module_platform_driver(soc_camera_platform_driver);
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MODULE_DESCRIPTION("SoC Camera Platform driver");
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MODULE_AUTHOR("Magnus Damm");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:soc_camera_platform");
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