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linuxdebug/drivers/media/platform/ti/omap/omap_vout.c

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null pointer error
2024-07-16 15:50:57 +02:00
/*
* 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 (source@mvista.com)
*
* 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("Texas Instruments");
MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
MODULE_LICENSE("GPL");
/* Driver Configuration macros */
#define VOUT_NAME "omap_vout"
enum omap_vout_channels {
OMAP_VIDEO1,
OMAP_VIDEO2,
};
/* 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(vid1_static_vrfb_alloc,
"Static allocation of the VRFB buffer for video1 device");
module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
MODULE_PARM_DESC(vid2_static_vrfb_alloc,
"Static allocation of the VRFB buffer for video2 device");
module_param(debug, bool, S_IRUGO);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
/* list of image formats supported by OMAP2 video pipelines */
static const struct v4l2_fmtdesc omap_formats[] = {
{
/* Note: V4L2 defines RGB565 as:
*
* Byte 0 Byte 1
* g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
*
* We interpret RGB565 as:
*
* Byte 0 Byte 1
* g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
*/
.pixelformat = V4L2_PIX_FMT_RGB565,
},
{
/* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
* this for RGB24 unpack mode, the last 8 bits are ignored
* */
.pixelformat = V4L2_PIX_FMT_RGB32,
},
{
/* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
* this for RGB24 packed mode
*
*/
.pixelformat = V4L2_PIX_FMT_RGB24,
},
{
.pixelformat = V4L2_PIX_FMT_YUYV,
},
{
.pixelformat = V4L2_PIX_FMT_UYVY,
},
};
#define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
/*
* Try format
*/
static int omap_vout_try_format(struct v4l2_pix_format *pix)
{
int ifmt, bpp = 0;
pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
(u32)VID_MAX_HEIGHT);
pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
if (pix->pixelformat == omap_formats[ifmt].pixelformat)
break;
}
if (ifmt == NUM_OUTPUT_FORMATS)
ifmt = 0;
pix->pixelformat = omap_formats[ifmt].pixelformat;
pix->field = V4L2_FIELD_NONE;
switch (pix->pixelformat) {
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
default:
pix->colorspace = V4L2_COLORSPACE_SRGB;
bpp = YUYV_BPP;
break;
case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_RGB565X:
pix->colorspace = V4L2_COLORSPACE_SRGB;
bpp = RGB565_BPP;
break;
case V4L2_PIX_FMT_RGB24:
pix->colorspace = V4L2_COLORSPACE_SRGB;
bpp = RGB24_BPP;
break;
case V4L2_PIX_FMT_RGB32:
case V4L2_PIX_FMT_BGR32:
pix->colorspace = V4L2_COLORSPACE_SRGB;
bpp = RGB32_BPP;
break;
}
pix->bytesperline = pix->width * bpp;
pix->sizeimage = pix->bytesperline * pix->height;
return bpp;
}
/*
* 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)
{
int ret = 0;
switch (v4l2_rotation) {
case 90:
*rotation = dss_rotation_90_degree;
break;
case 180:
*rotation = dss_rotation_180_degree;
break;
case 270:
*rotation = dss_rotation_270_degree;
break;
case 0:
*rotation = dss_rotation_0_degree;
break;
default:
ret = -EINVAL;
}
return ret;
}
static int omap_vout_calculate_offset(struct omap_vout_device *vout)
{
struct omapvideo_info *ovid;
struct v4l2_rect *crop = &vout->crop;
struct v4l2_pix_format *pix = &vout->pix;
int *cropped_offset = &vout->cropped_offset;
int ps = 2, line_length = 0;
ovid = &vout->vid_info;
if (ovid->rotation_type == VOUT_ROT_VRFB) {
omap_vout_calculate_vrfb_offset(vout);
} else {
vout->line_length = line_length = pix->width;
if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
V4L2_PIX_FMT_UYVY == pix->pixelformat)
ps = 2;
else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
ps = 4;
else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
ps = 3;
vout->ps = ps;
*cropped_offset = (line_length * ps) *
crop->top + crop->left * ps;
}
v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
__func__, vout->cropped_offset);
return 0;
}
/*
* Convert V4L2 pixel format to DSS pixel format
*/
static int video_mode_to_dss_mode(struct omap_vout_device *vout)
{
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct v4l2_pix_format *pix = &vout->pix;
enum omap_color_mode mode;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
switch (pix->pixelformat) {
case V4L2_PIX_FMT_YUYV:
mode = OMAP_DSS_COLOR_YUV2;
break;
case V4L2_PIX_FMT_UYVY:
mode = OMAP_DSS_COLOR_UYVY;
break;
case V4L2_PIX_FMT_RGB565:
mode = OMAP_DSS_COLOR_RGB16;
break;
case V4L2_PIX_FMT_RGB24:
mode = OMAP_DSS_COLOR_RGB24P;
break;
case V4L2_PIX_FMT_RGB32:
mode = (ovl->id == OMAP_DSS_VIDEO1) ?
OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
break;
case V4L2_PIX_FMT_BGR32:
mode = OMAP_DSS_COLOR_RGBX32;
break;
default:
mode = -EINVAL;
break;
}
return mode;
}
/*
* 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)
{
int ret = 0;
struct omap_overlay_info info;
int cropheight, cropwidth, pixwidth;
if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
(outw != vout->pix.width || outh != vout->pix.height)) {
ret = -EINVAL;
goto setup_ovl_err;
}
vout->dss_mode = video_mode_to_dss_mode(vout);
if (vout->dss_mode == -EINVAL) {
ret = -EINVAL;
goto setup_ovl_err;
}
/* Setup the input plane parameters according to
* rotation value selected.
*/
if (is_rotation_90_or_270(vout)) {
cropheight = vout->crop.width;
cropwidth = vout->crop.height;
pixwidth = vout->pix.height;
} else {
cropheight = vout->crop.height;
cropwidth = vout->crop.width;
pixwidth = vout->pix.width;
}
ovl->get_overlay_info(ovl, &info);
info.paddr = addr;
info.width = cropwidth;
info.height = cropheight;
info.color_mode = vout->dss_mode;
info.mirror = vout->mirror;
info.pos_x = posx;
info.pos_y = posy;
info.out_width = outw;
info.out_height = outh;
info.global_alpha = vout->win.global_alpha;
if (!is_rotation_enabled(vout)) {
info.rotation = 0;
info.rotation_type = OMAP_DSS_ROT_DMA;
info.screen_width = pixwidth;
} else {
info.rotation = vout->rotation;
info.rotation_type = OMAP_DSS_ROT_VRFB;
info.screen_width = 2048;
}
v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
"%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
"rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
"out_height=%d rotation_type=%d screen_width=%d\n", __func__,
ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
info.color_mode, info.rotation, info.mirror, info.pos_x,
info.pos_y, info.out_width, info.out_height, info.rotation_type,
info.screen_width);
ret = ovl->set_overlay_info(ovl, &info);
if (ret)
goto setup_ovl_err;
return 0;
setup_ovl_err:
v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
return ret;
}
/*
* Initialize the overlay structure
*/
static int omapvid_init(struct omap_vout_device *vout, dma_addr_t addr)
{
int ret = 0, i;
struct v4l2_window *win;
struct omap_overlay *ovl;
int posx, posy, outw, outh;
struct omap_video_timings *timing;
struct omapvideo_info *ovid = &vout->vid_info;
win = &vout->win;
for (i = 0; i < ovid->num_overlays; i++) {
struct omap_dss_device *dssdev;
ovl = ovid->overlays[i];
dssdev = ovl->get_device(ovl);
if (!dssdev)
return -EINVAL;
timing = &dssdev->panel.timings;
outw = win->w.width;
outh = win->w.height;
switch (vout->rotation) {
case dss_rotation_90_degree:
/* Invert the height and width for 90
* and 270 degree rotation
*/
swap(outw, outh);
posy = (timing->y_res - win->w.width) - win->w.left;
posx = win->w.top;
break;
case dss_rotation_180_degree:
posx = (timing->x_res - win->w.width) - win->w.left;
posy = (timing->y_res - win->w.height) - win->w.top;
break;
case dss_rotation_270_degree:
swap(outw, outh);
posy = win->w.left;
posx = (timing->x_res - win->w.height) - win->w.top;
break;
default:
posx = win->w.left;
posy = win->w.top;
break;
}
ret = omapvid_setup_overlay(vout, ovl, posx, posy,
outw, outh, addr);
if (ret)
goto omapvid_init_err;
}
return 0;
omapvid_init_err:
v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
return ret;
}
/*
* Apply the changes set the go bit of DSS
*/
static int omapvid_apply_changes(struct omap_vout_device *vout)
{
int i;
struct omap_overlay *ovl;
struct omapvideo_info *ovid = &vout->vid_info;
for (i = 0; i < ovid->num_overlays; i++) {
struct omap_dss_device *dssdev;
ovl = ovid->overlays[i];
dssdev = ovl->get_device(ovl);
if (!dssdev)
return -EINVAL;
ovl->manager->apply(ovl->manager);
}
return 0;
}
static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
unsigned int irqstatus, u64 ts)
{
u32 fid;
if (vout->first_int) {
vout->first_int = 0;
goto err;
}
if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
fid = 1;
else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
fid = 0;
else
goto err;
vout->field_id ^= 1;
if (fid != vout->field_id) {
if (fid == 0)
vout->field_id = fid;
} else if (0 == fid) {
if (vout->cur_frm == vout->next_frm)
goto err;
vout->cur_frm->vbuf.vb2_buf.timestamp = ts;
vout->cur_frm->vbuf.sequence = vout->sequence++;
vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
vout->cur_frm = vout->next_frm;
} else {
if (list_empty(&vout->dma_queue) ||
(vout->cur_frm != vout->next_frm))
goto err;
}
return vout->field_id;
err:
return 0;
}
static void omap_vout_isr(void *arg, unsigned int irqstatus)
{
int ret, fid, mgr_id;
dma_addr_t addr;
u32 irq;
struct omap_overlay *ovl;
u64 ts;
struct omapvideo_info *ovid;
struct omap_dss_device *cur_display;
struct omap_vout_device *vout = (struct omap_vout_device *)arg;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
mgr_id = ovl->manager->id;
/* get the display device attached to the overlay */
cur_display = ovl->get_device(ovl);
if (!cur_display)
return;
spin_lock(&vout->vbq_lock);
ts = ktime_get_ns();
switch (cur_display->type) {
case OMAP_DISPLAY_TYPE_DSI:
case OMAP_DISPLAY_TYPE_DPI:
case OMAP_DISPLAY_TYPE_DVI:
if (mgr_id == OMAP_DSS_CHANNEL_LCD)
irq = DISPC_IRQ_VSYNC;
else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
irq = DISPC_IRQ_VSYNC2;
else
goto vout_isr_err;
if (!(irqstatus & irq))
goto vout_isr_err;
break;
case OMAP_DISPLAY_TYPE_VENC:
fid = omapvid_handle_interlace_display(vout, irqstatus,
ts);
if (!fid)
goto vout_isr_err;
break;
case OMAP_DISPLAY_TYPE_HDMI:
if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
goto vout_isr_err;
break;
default:
goto vout_isr_err;
}
if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
vout->cur_frm->vbuf.vb2_buf.timestamp = ts;
vout->cur_frm->vbuf.sequence = vout->sequence++;
vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
vout->cur_frm = vout->next_frm;
}
vout->first_int = 0;
if (list_empty(&vout->dma_queue))
goto vout_isr_err;
vout->next_frm = list_entry(vout->dma_queue.next,
struct omap_vout_buffer, queue);
list_del(&vout->next_frm->queue);
addr = vout->queued_buf_addr[vout->next_frm->vbuf.vb2_buf.index]
+ vout->cropped_offset;
/* First save the configuration in ovelray structure */
ret = omapvid_init(vout, addr);
if (ret) {
printk(KERN_ERR VOUT_NAME
"failed to set overlay info\n");
goto vout_isr_err;
}
/* Enable the pipeline and set the Go bit */
ret = omapvid_apply_changes(vout);
if (ret)
printk(KERN_ERR VOUT_NAME "failed to change mode\n");
vout_isr_err:
spin_unlock(&vout->vbq_lock);
}
/*
* V4L2 ioctls
*/
static int vidioc_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
struct omap_vout_device *vout = video_drvdata(file);
strscpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
strscpy(cap->card, vout->vfd->name, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s.%d", VOUT_NAME, vout->vid);
return 0;
}
static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
struct v4l2_fmtdesc *fmt)
{
int index = fmt->index;
if (index >= NUM_OUTPUT_FORMATS)
return -EINVAL;
fmt->flags = omap_formats[index].flags;
fmt->pixelformat = omap_formats[index].pixelformat;
return 0;
}
static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
struct v4l2_format *f)
{
struct omap_vout_device *vout = video_drvdata(file);
f->fmt.pix = vout->pix;
return 0;
}
static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
struct v4l2_format *f)
{
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct omap_video_timings *timing;
struct omap_vout_device *vout = video_drvdata(file);
struct omap_dss_device *dssdev;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
/* get the display device attached to the overlay */
dssdev = ovl->get_device(ovl);
if (!dssdev)
return -EINVAL;
timing = &dssdev->panel.timings;
vout->fbuf.fmt.height = timing->y_res;
vout->fbuf.fmt.width = timing->x_res;
omap_vout_try_format(&f->fmt.pix);
return 0;
}
static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
struct v4l2_format *f)
{
int ret, bpp;
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct omap_video_timings *timing;
struct omap_vout_device *vout = video_drvdata(file);
struct omap_dss_device *dssdev;
if (vb2_is_busy(&vout->vq))
return -EBUSY;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
dssdev = ovl->get_device(ovl);
/* get the display device attached to the overlay */
if (!dssdev) {
ret = -EINVAL;
goto s_fmt_vid_out_exit;
}
timing = &dssdev->panel.timings;
/* We don't support RGB24-packed mode if vrfb rotation
* is enabled*/
if ((is_rotation_enabled(vout)) &&
f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
ret = -EINVAL;
goto s_fmt_vid_out_exit;
}
/* get the framebuffer parameters */
if (is_rotation_90_or_270(vout)) {
vout->fbuf.fmt.height = timing->x_res;
vout->fbuf.fmt.width = timing->y_res;
} else {
vout->fbuf.fmt.height = timing->y_res;
vout->fbuf.fmt.width = timing->x_res;
}
/* change to smaller size is OK */
bpp = omap_vout_try_format(&f->fmt.pix);
f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
/* try & set the new output format */
vout->bpp = bpp;
vout->pix = f->fmt.pix;
vout->vrfb_bpp = 1;
/* If YUYV then vrfb bpp is 2, for others its 1 */
if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
vout->vrfb_bpp = 2;
/* set default crop and win */
omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
ret = 0;
s_fmt_vid_out_exit:
return ret;
}
static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
struct v4l2_format *f)
{
int ret = 0;
struct omap_vout_device *vout = video_drvdata(file);
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct v4l2_window *win = &f->fmt.win;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
ret = omap_vout_try_window(&vout->fbuf, win);
if (!ret && !(ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA))
win->global_alpha = 0;
return ret;
}
static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
struct v4l2_format *f)
{
int ret = 0;
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct omap_vout_device *vout = video_drvdata(file);
struct v4l2_window *win = &f->fmt.win;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
if (!ret) {
enum omap_dss_trans_key_type key_type =
OMAP_DSS_COLOR_KEY_GFX_DST;
int enable;
/* Video1 plane does not support global alpha on OMAP3 */
if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA)
vout->win.global_alpha = win->global_alpha;
else
win->global_alpha = 0;
if (vout->fbuf.flags & (V4L2_FBUF_FLAG_CHROMAKEY |
V4L2_FBUF_FLAG_SRC_CHROMAKEY))
enable = 1;
else
enable = 0;
if (vout->fbuf.flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)
key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
if (ovl->manager && ovl->manager->get_manager_info &&
ovl->manager->set_manager_info) {
struct omap_overlay_manager_info info;
ovl->manager->get_manager_info(ovl->manager, &info);
info.trans_enabled = enable;
info.trans_key_type = key_type;
info.trans_key = vout->win.chromakey;
if (ovl->manager->set_manager_info(ovl->manager, &info))
return -EINVAL;
}
}
return ret;
}
static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
struct v4l2_format *f)
{
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct omap_vout_device *vout = video_drvdata(file);
struct v4l2_window *win = &f->fmt.win;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
win->w = vout->win.w;
win->field = vout->win.field;
win->chromakey = vout->win.chromakey;
if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA)
win->global_alpha = vout->win.global_alpha;
else
win->global_alpha = 0;
win->clips = NULL;
win->clipcount = 0;
win->bitmap = NULL;
return 0;
}
static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
{
struct omap_vout_device *vout = video_drvdata(file);
struct v4l2_pix_format *pix = &vout->pix;
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = vout->crop;
break;
case V4L2_SEL_TGT_CROP_DEFAULT:
omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
break;
case V4L2_SEL_TGT_CROP_BOUNDS:
/* Width and height are always even */
sel->r.width = pix->width & ~1;
sel->r.height = pix->height & ~1;
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
{
int ret = -EINVAL;
struct omap_vout_device *vout = video_drvdata(file);
struct omapvideo_info *ovid;
struct omap_overlay *ovl;
struct omap_video_timings *timing;
struct omap_dss_device *dssdev;
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
if (vb2_is_busy(&vout->vq))
return -EBUSY;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
/* get the display device attached to the overlay */
dssdev = ovl->get_device(ovl);
if (!dssdev) {
ret = -EINVAL;
goto s_crop_err;
}
timing = &dssdev->panel.timings;
if (is_rotation_90_or_270(vout)) {
vout->fbuf.fmt.height = timing->x_res;
vout->fbuf.fmt.width = timing->y_res;
} else {
vout->fbuf.fmt.height = timing->y_res;
vout->fbuf.fmt.width = timing->x_res;
}
ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
&vout->fbuf, &sel->r);
s_crop_err:
return ret;
}
static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct omap_vout_device *vout =
container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_ROTATE: {
struct omapvideo_info *ovid;
int rotation = ctrl->val;
ovid = &vout->vid_info;
if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
ret = -ERANGE;
break;
}
if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
ret = -EINVAL;
break;
}
if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
vout->mirror)) {
ret = -EINVAL;
break;
}
break;
}
case V4L2_CID_BG_COLOR:
{
struct omap_overlay *ovl;
unsigned int color = ctrl->val;
struct omap_overlay_manager_info info;
ovl = vout->vid_info.overlays[0];
if (!ovl->manager || !ovl->manager->get_manager_info) {
ret = -EINVAL;
break;
}
ovl->manager->get_manager_info(ovl->manager, &info);
info.default_color = color;
if (ovl->manager->set_manager_info(ovl->manager, &info)) {
ret = -EINVAL;
break;
}
break;
}
case V4L2_CID_VFLIP:
{
struct omapvideo_info *ovid;
unsigned int mirror = ctrl->val;
ovid = &vout->vid_info;
if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
ret = -ERANGE;
break;
}
if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
ret = -EINVAL;
break;
}
vout->mirror = mirror;
break;
}
default:
return -EINVAL;
}
return ret;
}
static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
.s_ctrl = omap_vout_s_ctrl,
};
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[])
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
int size = vout->pix.sizeimage;
if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
*nbufs = VRFB_NUM_BUFS - vq->num_buffers;
if (*nbufs == 0)
return -EINVAL;
}
if (*num_planes)
return sizes[0] < size ? -EINVAL : 0;
*num_planes = 1;
sizes[0] = size;
return 0;
}
static int omap_vout_vb2_prepare(struct vb2_buffer *vb)
{
struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
struct omapvideo_info *ovid = &vout->vid_info;
struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
dma_addr_t buf_phy_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
if (vb2_plane_size(vb, 0) < vout->pix.sizeimage) {
v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
"%s data will not fit into plane (%lu < %u)\n",
__func__, vb2_plane_size(vb, 0), vout->pix.sizeimage);
return -EINVAL;
}
vb2_set_plane_payload(vb, 0, vout->pix.sizeimage);
voutbuf->vbuf.field = V4L2_FIELD_NONE;
vout->queued_buf_addr[vb->index] = buf_phy_addr;
if (ovid->rotation_type == VOUT_ROT_VRFB)
return omap_vout_prepare_vrfb(vout, vb);
return 0;
}
static void omap_vout_vb2_queue(struct vb2_buffer *vb)
{
struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
list_add_tail(&voutbuf->queue, &vout->dma_queue);
}
static int omap_vout_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
struct omapvideo_info *ovid = &vout->vid_info;
struct omap_vout_buffer *buf, *tmp;
dma_addr_t addr = 0;
u32 mask = 0;
int ret, j;
/* Get the next frame from the buffer queue */
vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
struct omap_vout_buffer, queue);
/* Remove buffer from the buffer queue */
list_del(&vout->cur_frm->queue);
/* Initialize field_id and started member */
vout->field_id = 0;
vout->first_int = 1;
vout->sequence = 0;
if (omap_vout_calculate_offset(vout)) {
ret = -EINVAL;
goto out;
}
if (ovid->rotation_type == VOUT_ROT_VRFB)
if (omap_vout_vrfb_buffer_setup(vout, &count, 0)) {
ret = -ENOMEM;
goto out;
}
addr = vout->queued_buf_addr[vout->cur_frm->vbuf.vb2_buf.index]
+ vout->cropped_offset;
mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
| DISPC_IRQ_VSYNC2;
/* First save the configuration in overlay structure */
ret = omapvid_init(vout, addr);
if (ret) {
v4l2_err(&vout->vid_dev->v4l2_dev,
"failed to set overlay info\n");
goto streamon_err1;
}
omap_dispc_register_isr(omap_vout_isr, vout, mask);
/* Enable the pipeline and set the Go bit */
ret = omapvid_apply_changes(vout);
if (ret)
v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
for (j = 0; j < ovid->num_overlays; j++) {
struct omap_overlay *ovl = ovid->overlays[j];
struct omap_dss_device *dssdev = ovl->get_device(ovl);
if (dssdev) {
ret = ovl->enable(ovl);
if (ret)
goto streamon_err1;
}
}
return 0;
streamon_err1:
mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
| DISPC_IRQ_VSYNC2;
omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
for (j = 0; j < ovid->num_overlays; j++) {
struct omap_overlay *ovl = ovid->overlays[j];
struct omap_dss_device *dssdev = ovl->get_device(ovl);
if (dssdev)
ovl->disable(ovl);
}
/* Turn of the pipeline */
if (omapvid_apply_changes(vout))
v4l2_err(&vout->vid_dev->v4l2_dev,
"failed to change mode in streamoff\n");
out:
vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
list_del(&buf->queue);
vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
}
return ret;
}
static void omap_vout_vb2_stop_streaming(struct vb2_queue *vq)
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
struct omapvideo_info *ovid = &vout->vid_info;
struct omap_vout_buffer *buf, *tmp;
u32 mask = 0;
int j;
mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
| DISPC_IRQ_VSYNC2;
omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
for (j = 0; j < ovid->num_overlays; j++) {
struct omap_overlay *ovl = ovid->overlays[j];
struct omap_dss_device *dssdev = ovl->get_device(ovl);
if (dssdev)
ovl->disable(ovl);
}
/* Turn of the pipeline */
if (omapvid_apply_changes(vout))
v4l2_err(&vout->vid_dev->v4l2_dev,
"failed to change mode in streamoff\n");
if (vout->next_frm != vout->cur_frm)
vb2_buffer_done(&vout->next_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
list_del(&buf->queue);
vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
}
}
static int vidioc_s_fbuf(struct file *file, void *fh,
const struct v4l2_framebuffer *a)
{
int enable = 0;
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct omap_vout_device *vout = video_drvdata(file);
struct omap_overlay_manager_info info;
enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
/* OMAP DSS doesn't support Source and Destination color
key together */
if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
(a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
return -EINVAL;
/* OMAP DSS Doesn't support the Destination color key
and alpha blending together */
if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
(a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
return -EINVAL;
if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
} else
vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
} else
vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
V4L2_FBUF_FLAG_SRC_CHROMAKEY))
enable = 1;
else
enable = 0;
if (ovl->manager && ovl->manager->get_manager_info &&
ovl->manager->set_manager_info) {
ovl->manager->get_manager_info(ovl->manager, &info);
info.trans_enabled = enable;
info.trans_key_type = key_type;
info.trans_key = vout->win.chromakey;
if (ovl->manager->set_manager_info(ovl->manager, &info))
return -EINVAL;
}
if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
enable = 1;
} else {
vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
enable = 0;
}
if (ovl->manager && ovl->manager->get_manager_info &&
ovl->manager->set_manager_info) {
ovl->manager->get_manager_info(ovl->manager, &info);
/* enable this only if there is no zorder cap */
if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
info.partial_alpha_enabled = enable;
if (ovl->manager->set_manager_info(ovl->manager, &info))
return -EINVAL;
}
return 0;
}
static int vidioc_g_fbuf(struct file *file, void *fh,
struct v4l2_framebuffer *a)
{
struct omap_overlay *ovl;
struct omapvideo_info *ovid;
struct omap_vout_device *vout = video_drvdata(file);
struct omap_overlay_manager_info info;
struct omap_video_timings *timing;
struct omap_dss_device *dssdev;
ovid = &vout->vid_info;
ovl = ovid->overlays[0];
/* get the display device attached to the overlay */
dssdev = ovl->get_device(ovl);
if (!dssdev)
return -EINVAL;
timing = &dssdev->panel.timings;
vout->fbuf.fmt.height = timing->y_res;
vout->fbuf.fmt.width = timing->x_res;
a->fmt.field = V4L2_FIELD_NONE;
a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
a->fmt.pixelformat = V4L2_PIX_FMT_RGBA32;
a->fmt.height = vout->fbuf.fmt.height;
a->fmt.width = vout->fbuf.fmt.width;
a->fmt.bytesperline = vout->fbuf.fmt.width * 4;
a->fmt.sizeimage = a->fmt.height * a->fmt.bytesperline;
a->base = vout->fbuf.base;
a->flags = vout->fbuf.flags;
a->capability = vout->fbuf.capability;
a->flags &= ~(V4L2_FBUF_FLAG_SRC_CHROMAKEY | V4L2_FBUF_FLAG_CHROMAKEY |
V4L2_FBUF_FLAG_LOCAL_ALPHA);
if (ovl->manager && ovl->manager->get_manager_info) {
ovl->manager->get_manager_info(ovl->manager, &info);
if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
if (info.partial_alpha_enabled)
a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
}
return 0;
}
static int vidioc_enum_output(struct file *file, void *priv_fh,
struct v4l2_output *out)
{
if (out->index)
return -EINVAL;
snprintf(out->name, sizeof(out->name), "Overlay");
out->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
return 0;
}
static int vidioc_g_output(struct file *file, void *priv_fh, unsigned int *i)
{
*i = 0;
return 0;
}
static int vidioc_s_output(struct file *file, void *priv_fh, unsigned int i)
{
return i ? -EINVAL : 0;
}
static const struct v4l2_ioctl_ops vout_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
.vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
.vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
.vidioc_s_fbuf = vidioc_s_fbuf,
.vidioc_g_fbuf = vidioc_g_fbuf,
.vidioc_try_fmt_vid_out_overlay = vidioc_try_fmt_vid_overlay,
.vidioc_s_fmt_vid_out_overlay = vidioc_s_fmt_vid_overlay,
.vidioc_g_fmt_vid_out_overlay = vidioc_g_fmt_vid_overlay,
.vidioc_g_selection = vidioc_g_selection,
.vidioc_s_selection = vidioc_s_selection,
.vidioc_enum_output = vidioc_enum_output,
.vidioc_g_output = vidioc_g_output,
.vidioc_s_output = vidioc_s_output,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct v4l2_file_operations omap_vout_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = video_ioctl2,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
.open = v4l2_fh_open,
.release = vb2_fop_release,
};
static const struct vb2_ops omap_vout_vb2_ops = {
.queue_setup = omap_vout_vb2_queue_setup,
.buf_queue = omap_vout_vb2_queue,
.buf_prepare = omap_vout_vb2_prepare,
.start_streaming = omap_vout_vb2_start_streaming,
.stop_streaming = omap_vout_vb2_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
/* Init functions used during driver initialization */
/* Initial setup of video_data */
static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
{
struct video_device *vfd;
struct v4l2_pix_format *pix;
struct omap_overlay *ovl = vout->vid_info.overlays[0];
struct omap_dss_device *display = ovl->get_device(ovl);
struct v4l2_ctrl_handler *hdl;
struct vb2_queue *vq;
int ret;
/* set the default pix */
pix = &vout->pix;
/* Set the default picture of QVGA */
pix->width = QQVGA_WIDTH;
pix->height = QQVGA_HEIGHT;
/* Default pixel format is RGB 5-6-5 */
pix->pixelformat = V4L2_PIX_FMT_RGB565;
pix->field = V4L2_FIELD_NONE;
pix->bytesperline = pix->width * 2;
pix->sizeimage = pix->bytesperline * pix->height;
pix->colorspace = V4L2_COLORSPACE_SRGB;
vout->bpp = RGB565_BPP;
vout->fbuf.fmt.width = display->panel.timings.x_res;
vout->fbuf.fmt.height = display->panel.timings.y_res;
vout->cropped_offset = 0;
/* Set the data structures for the overlay parameters*/
vout->fbuf.flags = V4L2_FBUF_FLAG_OVERLAY;
vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY |
V4L2_FBUF_CAP_EXTERNOVERLAY;
if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) {
vout->win.global_alpha = 255;
vout->fbuf.capability |= V4L2_FBUF_CAP_GLOBAL_ALPHA;
vout->fbuf.flags |= V4L2_FBUF_FLAG_GLOBAL_ALPHA;
} else {
vout->win.global_alpha = 0;
}
vout->win.field = V4L2_FIELD_NONE;
omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
hdl = &vout->ctrl_handler;
v4l2_ctrl_handler_init(hdl, 3);
if (vout->vid_info.rotation_type == VOUT_ROT_VRFB) {
v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
V4L2_CID_ROTATE, 0, 270, 90, 0);
v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
}
v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
if (hdl->error)
return hdl->error;
vout->rotation = 0;
vout->mirror = false;
INIT_LIST_HEAD(&vout->dma_queue);
if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
vout->vrfb_bpp = 2;
/* initialize the video_device struct */
vfd = vout->vfd = video_device_alloc();
if (!vfd) {
printk(KERN_ERR VOUT_NAME
": could not allocate video device struct\n");
v4l2_ctrl_handler_free(hdl);
return -ENOMEM;
}
vfd->ctrl_handler = hdl;
vfd->release = video_device_release;
vfd->ioctl_ops = &vout_ioctl_ops;
strscpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
vfd->fops = &omap_vout_fops;
vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
vfd->vfl_dir = VFL_DIR_TX;
vfd->minor = -1;
vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
mutex_init(&vout->lock);
vq = &vout->vq;
vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
vq->io_modes = VB2_MMAP | VB2_DMABUF;
vq->drv_priv = vout;
vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
vq->buf_struct_size = sizeof(struct omap_vout_buffer);
vq->dev = vfd->v4l2_dev->dev;
vq->ops = &omap_vout_vb2_ops;
vq->mem_ops = &vb2_dma_contig_memops;
vq->lock = &vout->lock;
vq->min_buffers_needed = 1;
vfd->queue = vq;
ret = vb2_queue_init(vq);
if (ret) {
v4l2_ctrl_handler_free(hdl);
video_device_release(vfd);
}
return ret;
}
/* Setup video buffers */
static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
int vid_num)
{
struct omapvideo_info *ovid;
struct omap_vout_device *vout;
struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
struct omap2video_device *vid_dev =
container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
int ret = 0;
vout = vid_dev->vouts[vid_num];
ovid = &vout->vid_info;
if (ovid->rotation_type == VOUT_ROT_VRFB) {
bool static_vrfb_allocation = (vid_num == 0) ?
vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
static_vrfb_allocation);
}
return ret;
}
/* Create video out devices */
static int __init omap_vout_create_video_devices(struct platform_device *pdev)
{
int ret = 0, k;
struct omap_vout_device *vout;
struct video_device *vfd = NULL;
struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
struct omap2video_device *vid_dev = container_of(v4l2_dev,
struct omap2video_device, v4l2_dev);
struct omap_overlay *ovl = vid_dev->overlays[0];
struct omap_overlay_info info;
ovl->get_overlay_info(ovl, &info);
for (k = 0; k < pdev->num_resources; k++) {
vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
if (!vout) {
dev_err(&pdev->dev, ": could not allocate memory\n");
return -ENOMEM;
}
vout->vid = k;
vid_dev->vouts[k] = vout;
vout->vid_dev = vid_dev;
/* Select video2 if only 1 overlay is controlled by V4L2 */
if (pdev->num_resources == 1)
vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
else
/* Else select video1 and video2 one by one. */
vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
vout->vid_info.num_overlays = 1;
vout->vid_info.id = k + 1;
spin_lock_init(&vout->vbq_lock);
/*
* Set the framebuffer base, this allows applications to find
* the fb corresponding to this overlay.
*
* To be precise: fbuf.base should match smem_start of
* struct fb_fix_screeninfo.
*/
vout->fbuf.base = (void *)(uintptr_t)info.paddr;
/* Set VRFB as rotation_type for omap2 and omap3 */
if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
vout->vid_info.rotation_type = VOUT_ROT_VRFB;
/* Setup the default configuration for the video devices
*/
if (omap_vout_setup_video_data(vout) != 0) {
ret = -ENOMEM;
goto error;
}
/* Allocate default number of buffers for the video streaming
* and reserve the VRFB space for rotation
*/
if (omap_vout_setup_video_bufs(pdev, k) != 0) {
ret = -ENOMEM;
goto error1;
}
/* Register the Video device with V4L2
*/
vfd = vout->vfd;
if (video_register_device(vfd, VFL_TYPE_VIDEO, -1) < 0) {
dev_err(&pdev->dev,
": Could not register Video for Linux device\n");
vfd->minor = -1;
ret = -ENODEV;
goto error2;
}
video_set_drvdata(vfd, vout);
dev_info(&pdev->dev,
": registered and initialized video device %d\n",
vfd->minor);
if (k == (pdev->num_resources - 1))
return 0;
continue;
error2:
if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
omap_vout_release_vrfb(vout);
error1:
video_device_release(vfd);
error:
kfree(vout);
return ret;
}
return -ENODEV;
}
/* Driver functions */
static void omap_vout_cleanup_device(struct omap_vout_device *vout)
{
struct video_device *vfd;
struct omapvideo_info *ovid;
if (!vout)
return;
vfd = vout->vfd;
ovid = &vout->vid_info;
if (vfd) {
if (!video_is_registered(vfd)) {
/*
* The device was never registered, so release the
* video_device struct directly.
*/
video_device_release(vfd);
} else {
/*
* The unregister function will release the video_device
* struct as well as unregistering it.
*/
video_unregister_device(vfd);
}
}
v4l2_ctrl_handler_free(&vout->ctrl_handler);
if (ovid->rotation_type == VOUT_ROT_VRFB) {
omap_vout_release_vrfb(vout);
/* Free the VRFB buffer if allocated
* init time
*/
if (vout->vrfb_static_allocation)
omap_vout_free_vrfb_buffers(vout);
}
kfree(vout);
}
static int omap_vout_remove(struct platform_device *pdev)
{
int k;
struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
omap2video_device, v4l2_dev);
v4l2_device_unregister(v4l2_dev);
for (k = 0; k < pdev->num_resources; k++)
omap_vout_cleanup_device(vid_dev->vouts[k]);
for (k = 0; k < vid_dev->num_displays; k++) {
if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
omap_dss_put_device(vid_dev->displays[k]);
}
kfree(vid_dev);
return 0;
}
static int __init omap_vout_probe(struct platform_device *pdev)
{
int ret = 0, i;
struct omap_overlay *ovl;
struct omap_dss_device *dssdev = NULL;
struct omap_dss_device *def_display;
struct omap2video_device *vid_dev = NULL;
if (omapdss_is_initialized() == false)
return -EPROBE_DEFER;
ret = omapdss_compat_init();
if (ret) {
dev_err(&pdev->dev, "failed to init dss\n");
return ret;
}
if (pdev->num_resources == 0) {
dev_err(&pdev->dev, "probed for an unknown device\n");
ret = -ENODEV;
goto err_dss_init;
}
vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
if (vid_dev == NULL) {
ret = -ENOMEM;
goto err_dss_init;
}
vid_dev->num_displays = 0;
for_each_dss_dev(dssdev) {
omap_dss_get_device(dssdev);
if (!dssdev->driver) {
dev_warn(&pdev->dev, "no driver for display: %s\n",
dssdev->name);
omap_dss_put_device(dssdev);
continue;
}
vid_dev->displays[vid_dev->num_displays++] = dssdev;
}
if (vid_dev->num_displays == 0) {
dev_err(&pdev->dev, "no displays\n");
ret = -EINVAL;
goto probe_err0;
}
vid_dev->num_overlays = omap_dss_get_num_overlays();
for (i = 0; i < vid_dev->num_overlays; i++)
vid_dev->overlays[i] = omap_dss_get_overlay(i);
vid_dev->num_managers = omap_dss_get_num_overlay_managers();
for (i = 0; i < vid_dev->num_managers; i++)
vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
/* Get the Video1 overlay and video2 overlay.
* Setup the Display attached to that overlays
*/
for (i = 1; i < vid_dev->num_overlays; i++) {
ovl = omap_dss_get_overlay(i);
dssdev = ovl->get_device(ovl);
if (dssdev) {
def_display = dssdev;
} else {
dev_warn(&pdev->dev, "cannot find display\n");
def_display = NULL;
}
if (def_display) {
struct omap_dss_driver *dssdrv = def_display->driver;
ret = dssdrv->enable(def_display);
if (ret) {
/* Here we are not considering a error
* as display may be enabled by frame
* buffer driver
*/
dev_warn(&pdev->dev,
"'%s' Display already enabled\n",
def_display->name);
}
}
}
if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
dev_err(&pdev->dev, "v4l2_device_register failed\n");
ret = -ENODEV;
goto probe_err1;
}
ret = omap_vout_create_video_devices(pdev);
if (ret)
goto probe_err2;
for (i = 0; i < vid_dev->num_displays; i++) {
struct omap_dss_device *display = vid_dev->displays[i];
if (display->driver->update)
display->driver->update(display, 0, 0,
display->panel.timings.x_res,
display->panel.timings.y_res);
}
return 0;
probe_err2:
v4l2_device_unregister(&vid_dev->v4l2_dev);
probe_err1:
for (i = 1; i < vid_dev->num_overlays; i++) {
def_display = NULL;
ovl = omap_dss_get_overlay(i);
dssdev = ovl->get_device(ovl);
if (dssdev)
def_display = dssdev;
if (def_display && def_display->driver)
def_display->driver->disable(def_display);
}
probe_err0:
kfree(vid_dev);
err_dss_init:
omapdss_compat_uninit();
return ret;
}
static struct platform_driver omap_vout_driver = {
.driver = {
.name = VOUT_NAME,
},
.remove = omap_vout_remove,
};
static int __init omap_vout_init(void)
{
if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
return -EINVAL;
}
return 0;
}
static void omap_vout_cleanup(void)
{
platform_driver_unregister(&omap_vout_driver);
}
late_initcall(omap_vout_init);
module_exit(omap_vout_cleanup);