/* * Generic Platform Camera Driver * * Copyright (C) 2008 Magnus Damm * Based on mt9m001 driver, * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/videodev2.h> #include <media/v4l2-common.h> #include <media/soc_camera.h> #include <media/soc_camera_platform.h> struct soc_camera_platform_priv { struct soc_camera_platform_info *info; struct soc_camera_device icd; struct soc_camera_data_format format; }; static struct soc_camera_platform_info * soc_camera_platform_get_info(struct soc_camera_device *icd) { struct soc_camera_platform_priv *priv; priv = container_of(icd, struct soc_camera_platform_priv, icd); return priv->info; } static int soc_camera_platform_init(struct soc_camera_device *icd) { struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd); if (p->power) p->power(1); return 0; } static int soc_camera_platform_release(struct soc_camera_device *icd) { struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd); if (p->power) p->power(0); return 0; } static int soc_camera_platform_start_capture(struct soc_camera_device *icd) { struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd); return p->set_capture(p, 1); } static int soc_camera_platform_stop_capture(struct soc_camera_device *icd) { struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd); return p->set_capture(p, 0); } static int soc_camera_platform_set_bus_param(struct soc_camera_device *icd, unsigned long flags) { return 0; } static unsigned long soc_camera_platform_query_bus_param(struct soc_camera_device *icd) { struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd); return p->bus_param; } static int soc_camera_platform_set_fmt(struct soc_camera_device *icd, __u32 pixfmt, struct v4l2_rect *rect) { return 0; } static int soc_camera_platform_try_fmt(struct soc_camera_device *icd, struct v4l2_format *f) { struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd); struct v4l2_pix_format *pix = &f->fmt.pix; pix->width = p->format.width; pix->height = p->format.height; return 0; } static int soc_camera_platform_video_probe(struct soc_camera_device *icd) { struct soc_camera_platform_priv *priv; priv = container_of(icd, struct soc_camera_platform_priv, icd); priv->format.name = priv->info->format_name; priv->format.depth = priv->info->format_depth; priv->format.fourcc = priv->info->format.pixelformat; priv->format.colorspace = priv->info->format.colorspace; icd->formats = &priv->format; icd->num_formats = 1; return soc_camera_video_start(icd); } static void soc_camera_platform_video_remove(struct soc_camera_device *icd) { soc_camera_video_stop(icd); } static struct soc_camera_ops soc_camera_platform_ops = { .owner = THIS_MODULE, .probe = soc_camera_platform_video_probe, .remove = soc_camera_platform_video_remove, .init = soc_camera_platform_init, .release = soc_camera_platform_release, .start_capture = soc_camera_platform_start_capture, .stop_capture = soc_camera_platform_stop_capture, .set_fmt = soc_camera_platform_set_fmt, .try_fmt = soc_camera_platform_try_fmt, .set_bus_param = soc_camera_platform_set_bus_param, .query_bus_param = soc_camera_platform_query_bus_param, }; static int soc_camera_platform_probe(struct platform_device *pdev) { struct soc_camera_platform_priv *priv; struct soc_camera_platform_info *p; struct soc_camera_device *icd; int ret; p = pdev->dev.platform_data; if (!p) return -EINVAL; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->info = p; platform_set_drvdata(pdev, priv); icd = &priv->icd; icd->ops = &soc_camera_platform_ops; icd->control = &pdev->dev; icd->width_min = 0; icd->width_max = priv->info->format.width; icd->height_min = 0; icd->height_max = priv->info->format.height; icd->y_skip_top = 0; icd->iface = priv->info->iface; ret = soc_camera_device_register(icd); if (ret) kfree(priv); return ret; } static int soc_camera_platform_remove(struct platform_device *pdev) { struct soc_camera_platform_priv *priv = platform_get_drvdata(pdev); soc_camera_device_unregister(&priv->icd); kfree(priv); return 0; } static struct platform_driver soc_camera_platform_driver = { .driver = { .name = "soc_camera_platform", }, .probe = soc_camera_platform_probe, .remove = soc_camera_platform_remove, }; static int __init soc_camera_platform_module_init(void) { return platform_driver_register(&soc_camera_platform_driver); } static void __exit soc_camera_platform_module_exit(void) { platform_driver_unregister(&soc_camera_platform_driver); } module_init(soc_camera_platform_module_init); module_exit(soc_camera_platform_module_exit); MODULE_DESCRIPTION("SoC Camera Platform driver"); MODULE_AUTHOR("Magnus Damm"); MODULE_LICENSE("GPL v2");