diff options
Diffstat (limited to 'drivers/media/platform/ti/omap/omap_vout.c')
| -rw-r--r-- | drivers/media/platform/ti/omap/omap_vout.c | 1742 |
1 files changed, 1742 insertions, 0 deletions
diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c new file mode 100644 index 000000000000..3e0d9af7ffec --- /dev/null +++ b/drivers/media/platform/ti/omap/omap_vout.c @@ -0,0 +1,1742 @@ +/* + * 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); |