/* * omap_vout.c * * Copyright (C) 2005-2010 Texas Instruments. * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. * * Leveraged code from the OMAP2 camera driver * Video-for-Linux (Version 2) camera capture driver for * the OMAP24xx camera controller. * * Author: Andy Lowe ([email protected]) * * Copyright (C) 2004 MontaVista Software, Inc. * Copyright (C) 2010 Texas Instruments. * * History: * 20-APR-2006 Khasim Modified VRFB based Rotation, * The image data is always read from 0 degree * view and written * to the virtual space of desired rotation angle * 4-DEC-2006 Jian Changed to support better memory management * * 17-Nov-2008 Hardik Changed driver to use video_ioctl2 * * 23-Feb-2010 Vaibhav H Modified to use new DSS2 interface * */ #include <linux/init.h> #include <linux/module.h> #include <linux/vmalloc.h> #include <linux/sched.h> #include <linux/types.h> #include <linux/platform_device.h> #include <linux/irq.h> #include <linux/videodev2.h> #include <linux/dma-mapping.h> #include <linux/slab.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-event.h> #include <video/omapvrfb.h> #include <video/omapfb_dss.h> #include "omap_voutlib.h" #include "omap_voutdef.h" #include "omap_vout_vrfb.h" MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; /* Driver Configuration macros */ #define VOUT_NAME … enum omap_vout_channels { … }; /* Variables configurable through module params*/ static bool vid1_static_vrfb_alloc; static bool vid2_static_vrfb_alloc; static bool debug; /* Module parameters */ module_param(vid1_static_vrfb_alloc, bool, S_IRUGO); MODULE_PARM_DESC(…) …; module_param(vid2_static_vrfb_alloc, bool, S_IRUGO); MODULE_PARM_DESC(…) …; module_param(debug, bool, S_IRUGO); MODULE_PARM_DESC(…) …; /* list of image formats supported by OMAP2 video pipelines */ static const struct v4l2_fmtdesc omap_formats[] = …; #define NUM_OUTPUT_FORMATS … /* * Try format */ static int omap_vout_try_format(struct v4l2_pix_format *pix) { … } /* * Convert V4L2 rotation to DSS rotation * V4L2 understand 0, 90, 180, 270. * Convert to 0, 1, 2 and 3 respectively for DSS */ static int v4l2_rot_to_dss_rot(int v4l2_rotation, enum dss_rotation *rotation, bool mirror) { … } static int omap_vout_calculate_offset(struct omap_vout_device *vout) { … } /* * Convert V4L2 pixel format to DSS pixel format */ static int video_mode_to_dss_mode(struct omap_vout_device *vout) { … } /* * Setup the overlay */ static int omapvid_setup_overlay(struct omap_vout_device *vout, struct omap_overlay *ovl, int posx, int posy, int outw, int outh, dma_addr_t addr) { … } /* * Initialize the overlay structure */ static int omapvid_init(struct omap_vout_device *vout, dma_addr_t addr) { … } /* * Apply the changes set the go bit of DSS */ static int omapvid_apply_changes(struct omap_vout_device *vout) { … } static int omapvid_handle_interlace_display(struct omap_vout_device *vout, unsigned int irqstatus, u64 ts) { … } static void omap_vout_isr(void *arg, unsigned int irqstatus) { … } /* * V4L2 ioctls */ static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { … } static int vidioc_enum_fmt_vid_out(struct file *file, void *fh, struct v4l2_fmtdesc *fmt) { … } static int vidioc_g_fmt_vid_out(struct file *file, void *fh, struct v4l2_format *f) { … } static int vidioc_try_fmt_vid_out(struct file *file, void *fh, struct v4l2_format *f) { … } static int vidioc_s_fmt_vid_out(struct file *file, void *fh, struct v4l2_format *f) { … } static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) { … } static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) { … } static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) { … } static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel) { … } static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel) { … } static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = …; static int omap_vout_vb2_queue_setup(struct vb2_queue *vq, unsigned int *nbufs, unsigned int *num_planes, unsigned int sizes[], struct device *alloc_devs[]) { … } static int omap_vout_vb2_prepare(struct vb2_buffer *vb) { … } static void omap_vout_vb2_queue(struct vb2_buffer *vb) { … } static int omap_vout_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) { … } static void omap_vout_vb2_stop_streaming(struct vb2_queue *vq) { … } static int vidioc_s_fbuf(struct file *file, void *fh, const struct v4l2_framebuffer *a) { … } static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *a) { … } static int vidioc_enum_output(struct file *file, void *priv_fh, struct v4l2_output *out) { … } static int vidioc_g_output(struct file *file, void *priv_fh, unsigned int *i) { … } static int vidioc_s_output(struct file *file, void *priv_fh, unsigned int i) { … } static const struct v4l2_ioctl_ops vout_ioctl_ops = …; static const struct v4l2_file_operations omap_vout_fops = …; static const struct vb2_ops omap_vout_vb2_ops = …; /* Init functions used during driver initialization */ /* Initial setup of video_data */ static int __init omap_vout_setup_video_data(struct omap_vout_device *vout) { … } /* Setup video buffers */ static int __init omap_vout_setup_video_bufs(struct platform_device *pdev, int vid_num) { … } /* Create video out devices */ static int __init omap_vout_create_video_devices(struct platform_device *pdev) { … } /* Driver functions */ static void omap_vout_cleanup_device(struct omap_vout_device *vout) { … } static void omap_vout_remove(struct platform_device *pdev) { … } static int __init omap_vout_probe(struct platform_device *pdev) { … } static struct platform_driver omap_vout_driver = …; static int __init omap_vout_init(void) { … } static void omap_vout_cleanup(void) { … } late_initcall(omap_vout_init); module_exit(omap_vout_cleanup);
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