diff options
Diffstat (limited to 'drivers/media/video/omap/omap_vout.c')
| -rw-r--r-- | drivers/media/video/omap/omap_vout.c | 2643 |
1 files changed, 2643 insertions, 0 deletions
diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c new file mode 100644 index 000000000000..4c0ab499228b --- /dev/null +++ b/drivers/media/video/omap/omap_vout.c @@ -0,0 +1,2643 @@ +/* + * 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/dma-mapping.h> +#include <linux/irq.h> +#include <linux/videodev2.h> + +#include <media/videobuf-dma-sg.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> + +#include <plat/dma.h> +#include <plat/vram.h> +#include <plat/vrfb.h> +#include <plat/display.h> + +#include "omap_voutlib.h" +#include "omap_voutdef.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, +}; + +enum dma_channel_state { + DMA_CHAN_NOT_ALLOTED, + DMA_CHAN_ALLOTED, +}; + +#define QQVGA_WIDTH 160 +#define QQVGA_HEIGHT 120 + +/* Max Resolution supported by the driver */ +#define VID_MAX_WIDTH 1280 /* Largest width */ +#define VID_MAX_HEIGHT 720 /* Largest height */ + +/* Mimimum requirement is 2x2 for DSS */ +#define VID_MIN_WIDTH 2 +#define VID_MIN_HEIGHT 2 + +/* 2048 x 2048 is max res supported by OMAP display controller */ +#define MAX_PIXELS_PER_LINE 2048 + +#define VRFB_TX_TIMEOUT 1000 +#define VRFB_NUM_BUFS 4 + +/* Max buffer size tobe allocated during init */ +#define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4) + +static struct videobuf_queue_ops video_vbq_ops; +/* Variables configurable through module params*/ +static u32 video1_numbuffers = 3; +static u32 video2_numbuffers = 3; +static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE; +static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE; +static u32 vid1_static_vrfb_alloc; +static u32 vid2_static_vrfb_alloc; +static int debug; + +/* Module parameters */ +module_param(video1_numbuffers, uint, S_IRUGO); +MODULE_PARM_DESC(video1_numbuffers, + "Number of buffers to be allocated at init time for Video1 device."); + +module_param(video2_numbuffers, uint, S_IRUGO); +MODULE_PARM_DESC(video2_numbuffers, + "Number of buffers to be allocated at init time for Video2 device."); + +module_param(video1_bufsize, uint, S_IRUGO); +MODULE_PARM_DESC(video1_bufsize, + "Size of the buffer to be allocated for video1 device"); + +module_param(video2_bufsize, uint, S_IRUGO); +MODULE_PARM_DESC(video2_bufsize, + "Size of the buffer to be allocated for video2 device"); + +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 */ +const static 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 + */ + .description = "RGB565, le", + .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 + * */ + .description = "RGB32, le", + .pixelformat = V4L2_PIX_FMT_RGB32, + }, + { + /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use + * this for RGB24 packed mode + * + */ + .description = "RGB24, le", + .pixelformat = V4L2_PIX_FMT_RGB24, + }, + { + .description = "YUYV (YUV 4:2:2), packed", + .pixelformat = V4L2_PIX_FMT_YUYV, + }, + { + .description = "UYVY, packed", + .pixelformat = V4L2_PIX_FMT_UYVY, + }, +}; + +#define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats)) + +/* + * Allocate buffers + */ +static unsigned long omap_vout_alloc_buffer(u32 buf_size, u32 *phys_addr) +{ + u32 order, size; + unsigned long virt_addr, addr; + + size = PAGE_ALIGN(buf_size); + order = get_order(size); + virt_addr = __get_free_pages(GFP_KERNEL | GFP_DMA, order); + addr = virt_addr; + + if (virt_addr) { + while (size > 0) { + SetPageReserved(virt_to_page(addr)); + addr += PAGE_SIZE; + size -= PAGE_SIZE; + } + } + *phys_addr = (u32) virt_to_phys((void *) virt_addr); + return virt_addr; +} + +/* + * Free buffers + */ +static void omap_vout_free_buffer(unsigned long virtaddr, u32 buf_size) +{ + u32 order, size; + unsigned long addr = virtaddr; + + size = PAGE_ALIGN(buf_size); + order = get_order(size); + + while (size > 0) { + ClearPageReserved(virt_to_page(addr)); + addr += PAGE_SIZE; + size -= PAGE_SIZE; + } + free_pages((unsigned long) virtaddr, order); +} + +/* + * Function for allocating video buffers + */ +static int omap_vout_allocate_vrfb_buffers(struct omap_vout_device *vout, + unsigned int *count, int startindex) +{ + int i, j; + + for (i = 0; i < *count; i++) { + if (!vout->smsshado_virt_addr[i]) { + vout->smsshado_virt_addr[i] = + omap_vout_alloc_buffer(vout->smsshado_size, + &vout->smsshado_phy_addr[i]); + } + if (!vout->smsshado_virt_addr[i] && startindex != -1) { + if (V4L2_MEMORY_MMAP == vout->memory && i >= startindex) + break; + } + if (!vout->smsshado_virt_addr[i]) { + for (j = 0; j < i; j++) { + omap_vout_free_buffer( + vout->smsshado_virt_addr[j], + vout->smsshado_size); + vout->smsshado_virt_addr[j] = 0; + vout->smsshado_phy_addr[j] = 0; + } + *count = 0; + return -ENOMEM; + } + memset((void *) vout->smsshado_virt_addr[i], 0, + vout->smsshado_size); + } + return 0; +} + +/* + * 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_ANY; + pix->priv = 0; + + switch (pix->pixelformat) { + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_UYVY: + default: + pix->colorspace = V4L2_COLORSPACE_JPEG; + 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; +} + +/* + * omap_vout_uservirt_to_phys: This inline function is used to convert user + * space virtual address to physical address. + */ +static u32 omap_vout_uservirt_to_phys(u32 virtp) +{ + unsigned long physp = 0; + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; + + vma = find_vma(mm, virtp); + /* For kernel direct-mapped memory, take the easy way */ + if (virtp >= PAGE_OFFSET) { + physp = virt_to_phys((void *) virtp); + } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) { + /* this will catch, kernel-allocated, mmaped-to-usermode + addresses */ + physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start); + } else { + /* otherwise, use get_user_pages() for general userland pages */ + int res, nr_pages = 1; + struct page *pages; + down_read(¤t->mm->mmap_sem); + + res = get_user_pages(current, current->mm, virtp, nr_pages, 1, + 0, &pages, NULL); + up_read(¤t->mm->mmap_sem); + + if (res == nr_pages) { + physp = __pa(page_address(&pages[0]) + + (virtp & ~PAGE_MASK)); + } else { + printk(KERN_WARNING VOUT_NAME + "get_user_pages failed\n"); + return 0; + } + } + + return physp; +} + +/* + * Wakes up the application once the DMA transfer to VRFB space is completed. + */ +static void omap_vout_vrfb_dma_tx_callback(int lch, u16 ch_status, void *data) +{ + struct vid_vrfb_dma *t = (struct vid_vrfb_dma *) data; + + t->tx_status = 1; + wake_up_interruptible(&t->wait); +} + +/* + * Release the VRFB context once the module exits + */ +static void omap_vout_release_vrfb(struct omap_vout_device *vout) +{ + int i; + + for (i = 0; i < VRFB_NUM_BUFS; i++) + omap_vrfb_release_ctx(&vout->vrfb_context[i]); + + if (vout->vrfb_dma_tx.req_status == DMA_CHAN_ALLOTED) { + vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED; + omap_free_dma(vout->vrfb_dma_tx.dma_ch); + } +} + +/* + * Return true if rotation is 90 or 270 + */ +static inline int rotate_90_or_270(const struct omap_vout_device *vout) +{ + return (vout->rotation == dss_rotation_90_degree || + vout->rotation == dss_rotation_270_degree); +} + +/* + * Return true if rotation is enabled + */ +static inline int rotation_enabled(const struct omap_vout_device *vout) +{ + return vout->rotation || vout->mirror; +} + +/* + * Reverse the rotation degree if mirroring is enabled + */ +static inline int calc_rotation(const struct omap_vout_device *vout) +{ + if (!vout->mirror) + return vout->rotation; + + switch (vout->rotation) { + case dss_rotation_90_degree: + return dss_rotation_270_degree; + case dss_rotation_270_degree: + return dss_rotation_90_degree; + case dss_rotation_180_degree: + return dss_rotation_0_degree; + default: + return dss_rotation_180_degree; + } +} + +/* + * Free the V4L2 buffers + */ +static void omap_vout_free_buffers(struct omap_vout_device *vout) +{ + int i, numbuffers; + + /* Allocate memory for the buffers */ + numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers; + vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize; + + for (i = 0; i < numbuffers; i++) { + omap_vout_free_buffer(vout->buf_virt_addr[i], + vout->buffer_size); + vout->buf_phy_addr[i] = 0; + vout->buf_virt_addr[i] = 0; + } +} + +/* + * Free VRFB buffers + */ +static void omap_vout_free_vrfb_buffers(struct omap_vout_device *vout) +{ + int j; + + for (j = 0; j < VRFB_NUM_BUFS; j++) { + omap_vout_free_buffer(vout->smsshado_virt_addr[j], + vout->smsshado_size); + vout->smsshado_virt_addr[j] = 0; + vout->smsshado_phy_addr[j] = 0; + } +} + +/* + * Allocate the buffers for the VRFB space. Data is copied from V4L2 + * buffers to the VRFB buffers using the DMA engine. + */ +static int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout, + unsigned int *count, unsigned int startindex) +{ + int i; + bool yuv_mode; + + /* Allocate the VRFB buffers only if the buffers are not + * allocated during init time. + */ + if ((rotation_enabled(vout)) && !vout->vrfb_static_allocation) + if (omap_vout_allocate_vrfb_buffers(vout, count, startindex)) + return -ENOMEM; + + if (vout->dss_mode == OMAP_DSS_COLOR_YUV2 || + vout->dss_mode == OMAP_DSS_COLOR_UYVY) + yuv_mode = true; + else + yuv_mode = false; + + for (i = 0; i < *count; i++) + omap_vrfb_setup(&vout->vrfb_context[i], + vout->smsshado_phy_addr[i], vout->pix.width, + vout->pix.height, vout->bpp, yuv_mode); + + return 0; +} + +/* + * Convert V4L2 rotation to DSS rotation + * V4L2 understand 0, 90, 180, 270. + * Convert to 0, 1, 2 and 3 repsectively 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; +} + +/* + * Calculate the buffer offsets from which the streaming should + * start. This offset calculation is mainly required because of + * the VRFB 32 pixels alignment with rotation. + */ +static int omap_vout_calculate_offset(struct omap_vout_device *vout) +{ + struct omap_overlay *ovl; + enum dss_rotation rotation; + struct omapvideo_info *ovid; + bool mirroring = vout->mirror; + struct omap_dss_device *cur_display; + struct v4l2_rect *crop = &vout->crop; + struct v4l2_pix_format *pix = &vout->pix; + int *cropped_offset = &vout->cropped_offset; + int vr_ps = 1, ps = 2, temp_ps = 2; + int offset = 0, ctop = 0, cleft = 0, line_length = 0; + + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + /* get the display device attached to the overlay */ + if (!ovl->manager || !ovl->manager->device) + return -1; + + cur_display = ovl->manager->device; + rotation = calc_rotation(vout); + + if (V4L2_PIX_FMT_YUYV == pix->pixelformat || + V4L2_PIX_FMT_UYVY == pix->pixelformat) { + if (rotation_enabled(vout)) { + /* + * ps - Actual pixel size for YUYV/UYVY for + * VRFB/Mirroring is 4 bytes + * vr_ps - Virtually pixel size for YUYV/UYVY is + * 2 bytes + */ + ps = 4; + vr_ps = 2; + } else { + ps = 2; /* otherwise the pixel size is 2 byte */ + } + } else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat) { + ps = 4; + } else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat) { + ps = 3; + } + vout->ps = ps; + vout->vr_ps = vr_ps; + + if (rotation_enabled(vout)) { + line_length = MAX_PIXELS_PER_LINE; + ctop = (pix->height - crop->height) - crop->top; + cleft = (pix->width - crop->width) - crop->left; + } else { + line_length = pix->width; + } + vout->line_length = line_length; + switch (rotation) { + case dss_rotation_90_degree: + offset = vout->vrfb_context[0].yoffset * + vout->vrfb_context[0].bytespp; + temp_ps = ps / vr_ps; + if (mirroring == 0) { + *cropped_offset = offset + line_length * + temp_ps * cleft + crop->top * temp_ps; + } else { + *cropped_offset = offset + line_length * temp_ps * + cleft + crop->top * temp_ps + (line_length * + ((crop->width / (vr_ps)) - 1) * ps); + } + break; + case dss_rotation_180_degree: + offset = ((MAX_PIXELS_PER_LINE * vout->vrfb_context[0].yoffset * + vout->vrfb_context[0].bytespp) + + (vout->vrfb_context[0].xoffset * + vout->vrfb_context[0].bytespp)); + if (mirroring == 0) { + *cropped_offset = offset + (line_length * ps * ctop) + + (cleft / vr_ps) * ps; + + } else { + *cropped_offset = offset + (line_length * ps * ctop) + + (cleft / vr_ps) * ps + (line_length * + (crop->height - 1) * ps); + } + break; + case dss_rotation_270_degree: + offset = MAX_PIXELS_PER_LINE * vout->vrfb_context[0].xoffset * + vout->vrfb_context[0].bytespp; + temp_ps = ps / vr_ps; + if (mirroring == 0) { + *cropped_offset = offset + line_length * + temp_ps * crop->left + ctop * ps; + } else { + *cropped_offset = offset + line_length * + temp_ps * crop->left + ctop * ps + + (line_length * ((crop->width / vr_ps) - 1) * + ps); + } + break; + case dss_rotation_0_degree: + if (mirroring == 0) { + *cropped_offset = (line_length * ps) * + crop->top + (crop->left / vr_ps) * ps; + } else { + *cropped_offset = (line_length * ps) * + crop->top + (crop->left / vr_ps) * ps + + (line_length * (crop->height - 1) * ps); + } + break; + default: + *cropped_offset = (line_length * ps * crop->top) / + vr_ps + (crop->left * ps) / vr_ps + + ((crop->width / vr_ps) - 1) * ps; + break; + } + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n", + __func__, *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 0: + break; + 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; + } + return mode; +} + +/* + * Setup the overlay + */ +int omapvid_setup_overlay(struct omap_vout_device *vout, + struct omap_overlay *ovl, int posx, int posy, int outw, + int outh, u32 addr) +{ + int ret = 0; + struct omap_overlay_info info; + int cropheight, cropwidth, pixheight, 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 (rotate_90_or_270(vout)) { + cropheight = vout->crop.width; + cropwidth = vout->crop.height; + pixheight = vout->pix.width; + pixwidth = vout->pix.height; + } else { + cropheight = vout->crop.height; + cropwidth = vout->crop.width; + pixheight = vout->pix.height; + pixwidth = vout->pix.width; + } + + ovl->get_overlay_info(ovl, &info); + info.paddr = addr; + info.vaddr = NULL; + 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 (!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=%x 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__, info.enabled, 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 + */ +int omapvid_init(struct omap_vout_device *vout, u32 addr) +{ + int ret = 0, i; + struct v4l2_window *win; + struct omap_overlay *ovl; + int posx, posy, outw, outh, temp; + struct omap_video_timings *timing; + struct omapvideo_info *ovid = &vout->vid_info; + + win = &vout->win; + for (i = 0; i < ovid->num_overlays; i++) { + ovl = ovid->overlays[i]; + if (!ovl->manager || !ovl->manager->device) + return -EINVAL; + + timing = &ovl->manager->device->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 + */ + temp = outw; + outw = outh; + outh = temp; + 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: + temp = outw; + outw = outh; + outh = temp; + 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 + */ +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++) { + ovl = ovid->overlays[i]; + if (!ovl->manager || !ovl->manager->device) + return -EINVAL; + ovl->manager->apply(ovl->manager); + } + + return 0; +} + +void omap_vout_isr(void *arg, unsigned int irqstatus) +{ + int ret; + u32 addr, fid; + struct omap_overlay *ovl; + struct timeval timevalue; + struct omapvideo_info *ovid; + struct omap_dss_device *cur_display; + struct omap_vout_device *vout = (struct omap_vout_device *)arg; + + if (!vout->streaming) + return; + + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + /* get the display device attached to the overlay */ + if (!ovl->manager || !ovl->manager->device) + return; + + cur_display = ovl->manager->device; + + spin_lock(&vout->vbq_lock); + do_gettimeofday(&timevalue); + if (cur_display->type == OMAP_DISPLAY_TYPE_DPI) { + if (!(irqstatus & DISPC_IRQ_VSYNC)) + goto vout_isr_err; + + if (!vout->first_int && (vout->cur_frm != vout->next_frm)) { + vout->cur_frm->ts = timevalue; + vout->cur_frm->state = VIDEOBUF_DONE; + wake_up_interruptible(&vout->cur_frm->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 videobuf_buffer, queue); + list_del(&vout->next_frm->queue); + + vout->next_frm->state = VIDEOBUF_ACTIVE; + + addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i] + + 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"); + /* 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"); + } else { + + if (vout->first_int) { + vout->first_int = 0; + goto vout_isr_err; + } + if (irqstatus & DISPC_IRQ_EVSYNC_ODD) + fid = 1; + else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN) + fid = 0; + else + goto vout_isr_err; + + vout->field_id ^= 1; + if (fid != vout->field_id) { + if (0 == fid) + vout->field_id = fid; + + goto vout_isr_err; + } + if (0 == fid) { + if (vout->cur_frm == vout->next_frm) + goto vout_isr_err; + + vout->cur_frm->ts = timevalue; + vout->cur_frm->state = VIDEOBUF_DONE; + wake_up_interruptible(&vout->cur_frm->done); + vout->cur_frm = vout->next_frm; + } else if (1 == fid) { + if (list_empty(&vout->dma_queue) || + (vout->cur_frm != vout->next_frm)) + goto vout_isr_err; + + vout->next_frm = list_entry(vout->dma_queue.next, + struct videobuf_buffer, queue); + list_del(&vout->next_frm->queue); + + vout->next_frm->state = VIDEOBUF_ACTIVE; + addr = (unsigned long) + vout->queued_buf_addr[vout->next_frm->i] + + 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"); + /* 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); +} + + +/* Video buffer call backs */ + +/* + * Buffer setup function is called by videobuf layer when REQBUF ioctl is + * called. This is used to setup buffers and return size and count of + * buffers allocated. After the call to this buffer, videobuf layer will + * setup buffer queue depending on the size and count of buffers + */ +static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, + unsigned int *size) +{ + int startindex = 0, i, j; + u32 phy_addr = 0, virt_addr = 0; + struct omap_vout_device *vout = q->priv_data; + + if (!vout) + return -EINVAL; + + if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type) + return -EINVAL; + + startindex = (vout->vid == OMAP_VIDEO1) ? + video1_numbuffers : video2_numbuffers; + if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex) + *count = startindex; + + if ((rotation_enabled(vout)) && *count > VRFB_NUM_BUFS) + *count = VRFB_NUM_BUFS; + + /* If rotation is enabled, allocate memory for VRFB space also */ + if (rotation_enabled(vout)) + if (omap_vout_vrfb_buffer_setup(vout, count, startindex)) + return -ENOMEM; + + if (V4L2_MEMORY_MMAP != vout->memory) + return 0; + + /* Now allocated the V4L2 buffers */ + *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp); + startindex = (vout->vid == OMAP_VIDEO1) ? + video1_numbuffers : video2_numbuffers; + + for (i = startindex; i < *count; i++) { + vout->buffer_size = *size; + + virt_addr = omap_vout_alloc_buffer(vout->buffer_size, + &phy_addr); + if (!virt_addr) { + if (!rotation_enabled(vout)) + break; + /* Free the VRFB buffers if no space for V4L2 buffers */ + for (j = i; j < *count; j++) { + omap_vout_free_buffer( + vout->smsshado_virt_addr[j], + vout->smsshado_size); + vout->smsshado_virt_addr[j] = 0; + vout->smsshado_phy_addr[j] = 0; + } + } + vout->buf_virt_addr[i] = virt_addr; + vout->buf_phy_addr[i] = phy_addr; + } + *count = vout->buffer_allocated = i; + + return 0; +} + +/* + * Free the V4L2 buffers additionally allocated than default + * number of buffers and free all the VRFB buffers + */ +static void omap_vout_free_allbuffers(struct omap_vout_device *vout) +{ + int num_buffers = 0, i; + + num_buffers = (vout->vid == OMAP_VIDEO1) ? + video1_numbuffers : video2_numbuffers; + + for (i = num_buffers; i < vout->buffer_allocated; i++) { + if (vout->buf_virt_addr[i]) + omap_vout_free_buffer(vout->buf_virt_addr[i], + vout->buffer_size); + + vout->buf_virt_addr[i] = 0; + vout->buf_phy_addr[i] = 0; + } + /* Free the VRFB buffers only if they are allocated + * during reqbufs. Don't free if init time allocated + */ + if (!vout->vrfb_static_allocation) { + for (i = 0; i < VRFB_NUM_BUFS; i++) { + if (vout->smsshado_virt_addr[i]) { + omap_vout_free_buffer( + vout->smsshado_virt_addr[i], + vout->smsshado_size); + vout->smsshado_virt_addr[i] = 0; + vout->smsshado_phy_addr[i] = 0; + } + } + } + vout->buffer_allocated = num_buffers; +} + +/* + * This function will be called when VIDIOC_QBUF ioctl is called. + * It prepare buffers before give out for the display. This function + * converts user space virtual address into physical address if userptr memory + * exchange mechanism is used. If rotation is enabled, it copies entire + * buffer into VRFB memory space before giving it to the DSS. + */ +static int omap_vout_buffer_prepare(struct videobuf_queue *q, + struct videobuf_buffer *vb, + enum v4l2_field field) +{ + struct vid_vrfb_dma *tx; + enum dss_rotation rotation; + struct videobuf_dmabuf *dmabuf = NULL; + struct omap_vout_device *vout = q->priv_data; + u32 dest_frame_index = 0, src_element_index = 0; + u32 dest_element_index = 0, src_frame_index = 0; + u32 elem_count = 0, frame_count = 0, pixsize = 2; + + if (VIDEOBUF_NEEDS_INIT == vb->state) { + vb->width = vout->pix.width; + vb->height = vout->pix.height; + vb->size = vb->width * vb->height * vout->bpp; + vb->field = field; + } + vb->state = VIDEOBUF_PREPARED; + /* if user pointer memory mechanism is used, get the physical + * address of the buffer + */ + if (V4L2_MEMORY_USERPTR == vb->memory) { + if (0 == vb->baddr) + return -EINVAL; + /* Virtual address */ + /* priv points to struct videobuf_pci_sg_memory. But we went + * pointer to videobuf_dmabuf, which is member of + * videobuf_pci_sg_memory */ + dmabuf = videobuf_to_dma(q->bufs[vb->i]); + dmabuf->vmalloc = (void *) vb->baddr; + + /* Physical address */ + dmabuf->bus_addr = + (dma_addr_t) omap_vout_uservirt_to_phys(vb->baddr); + } + + if (!rotation_enabled(vout)) { + dmabuf = videobuf_to_dma(q->bufs[vb->i]); + vout->queued_buf_addr[vb->i] = (u8 *) dmabuf->bus_addr; + return 0; + } + dmabuf = videobuf_to_dma(q->bufs[vb->i]); + /* If rotation is enabled, copy input buffer into VRFB + * memory space using DMA. We are copying input buffer + * into VRFB memory space of desired angle and DSS will + * read image VRFB memory for 0 degree angle + */ + pixsize = vout->bpp * vout->vrfb_bpp; + /* + * DMA transfer in double index mode + */ + + /* Frame index */ + dest_frame_index = ((MAX_PIXELS_PER_LINE * pixsize) - + (vout->pix.width * vout->bpp)) + 1; + + /* Source and destination parameters */ + src_element_index = 0; + src_frame_index = 0; + dest_element_index = 1; + /* Number of elements per frame */ + elem_count = vout->pix.width * vout->bpp; + frame_count = vout->pix.height; + tx = &vout->vrfb_dma_tx; + tx->tx_status = 0; + omap_set_dma_transfer_params(tx->dma_ch, OMAP_DMA_DATA_TYPE_S32, + (elem_count / 4), frame_count, OMAP_DMA_SYNC_ELEMENT, + tx->dev_id, 0x0); + /* src_port required only for OMAP1 */ + omap_set_dma_src_params(tx->dma_ch, 0, OMAP_DMA_AMODE_POST_INC, + dmabuf->bus_addr, src_element_index, src_frame_index); + /*set dma source burst mode for VRFB */ + omap_set_dma_src_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16); + rotation = calc_rotation(vout); + + /* dest_port required only for OMAP1 */ + omap_set_dma_dest_params(tx->dma_ch, 0, OMAP_DMA_AMODE_DOUBLE_IDX, + vout->vrfb_context[vb->i].paddr[0], dest_element_index, + dest_frame_index); + /*set dma dest burst mode for VRFB */ + omap_set_dma_dest_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16); + omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE, 0x20, 0); + + omap_start_dma(tx->dma_ch); + interruptible_sleep_on_timeout(&tx->wait, VRFB_TX_TIMEOUT); + + if (tx->tx_status == 0) { + omap_stop_dma(tx->dma_ch); + return -EINVAL; + } + /* Store buffers physical address into an array. Addresses + * from this array will be used to configure DSS */ + vout->queued_buf_addr[vb->i] = (u8 *) + vout->vrfb_context[vb->i].paddr[rotation]; + return 0; +} + +/* + * Buffer queue funtion will be called from the videobuf layer when _QBUF + * ioctl is called. It is used to enqueue buffer, which is ready to be + * displayed. + */ +static void omap_vout_buffer_queue(struct videobuf_queue *q, + struct videobuf_buffer *vb) +{ + struct omap_vout_device *vout = q->priv_data; + + /* Driver is also maintainig a queue. So enqueue buffer in the driver + * queue */ + list_add_tail(&vb->queue, &vout->dma_queue); + + vb->state = VIDEOBUF_QUEUED; +} + +/* + * Buffer release function is called from videobuf layer to release buffer + * which are already allocated + */ +static void omap_vout_buffer_release(struct videobuf_queue *q, + struct videobuf_buffer *vb) +{ + struct omap_vout_device *vout = q->priv_data; + + vb->state = VIDEOBUF_NEEDS_INIT; + + if (V4L2_MEMORY_MMAP != vout->memory) + return; +} + +/* + * File operations + */ +static void omap_vout_vm_open(struct vm_area_struct *vma) +{ + struct omap_vout_device *vout = vma->vm_private_data; + + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, + "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end); + vout->mmap_count++; +} + +static void omap_vout_vm_close(struct vm_area_struct *vma) +{ + struct omap_vout_device *vout = vma->vm_private_data; + + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, + "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end); + vout->mmap_count--; +} + +static struct vm_operations_struct omap_vout_vm_ops = { + .open = omap_vout_vm_open, + .close = omap_vout_vm_close, +}; + +static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma) +{ + int i; + void *pos; + unsigned long start = vma->vm_start; + unsigned long size = (vma->vm_end - vma->vm_start); + struct videobuf_dmabuf *dmabuf = NULL; + struct omap_vout_device *vout = file->private_data; + struct videobuf_queue *q = &vout->vbq; + + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, + " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__, + vma->vm_pgoff, vma->vm_start, vma->vm_end); + + /* look for the buffer to map */ + for (i = 0; i < VIDEO_MAX_FRAME; i++) { + if (NULL == q->bufs[i]) + continue; + if (V4L2_MEMORY_MMAP != q->bufs[i]->memory) + continue; + if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT)) + break; + } + + if (VIDEO_MAX_FRAME == i) { + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, + "offset invalid [offset=0x%lx]\n", + (vma->vm_pgoff << PAGE_SHIFT)); + return -EINVAL; + } + q->bufs[i]->baddr = vma->vm_start; + + vma->vm_flags |= VM_RESERVED; + vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); + vma->vm_ops = &omap_vout_vm_ops; + vma->vm_private_data = (void *) vout; + dmabuf = videobuf_to_dma(q->bufs[i]); + pos = dmabuf->vmalloc; + vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT; + while (size > 0) { + unsigned long pfn; + pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT; + if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED)) + return -EAGAIN; + start += PAGE_SIZE; + pos += PAGE_SIZE; + size -= PAGE_SIZE; + } + vout->mmap_count++; + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__); + + return 0; +} + +static int omap_vout_release(struct file *file) +{ + unsigned int ret, i; + struct videobuf_queue *q; + struct omapvideo_info *ovid; + struct omap_vout_device *vout = file->private_data; + + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__); + ovid = &vout->vid_info; + + if (!vout) + return 0; + + q = &vout->vbq; + /* Disable all the overlay managers connected with this interface */ + for (i = 0; i < ovid->num_overlays; i++) { + struct omap_overlay *ovl = ovid->overlays[i]; + if (ovl->manager && ovl->manager->device) { + struct omap_overlay_info info; + ovl->get_overlay_info(ovl, &info); + info.enabled = 0; + ovl->set_overlay_info(ovl, &info); + } + } + /* Turn off the pipeline */ + ret = omapvid_apply_changes(vout); + if (ret) + v4l2_warn(&vout->vid_dev->v4l2_dev, + "Unable to apply changes\n"); + + /* Free all buffers */ + omap_vout_free_allbuffers(vout); + videobuf_mmap_free(q); + + /* Even if apply changes fails we should continue + freeing allocated memeory */ + if (vout->streaming) { + u32 mask = 0; + + mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | + DISPC_IRQ_EVSYNC_ODD; + omap_dispc_unregister_isr(omap_vout_isr, vout, mask); + vout->streaming = 0; + + videobuf_streamoff(q); + videobuf_queue_cancel(q); + } + + if (vout->mmap_count != 0) + vout->mmap_count = 0; + + vout->opened -= 1; + file->private_data = NULL; + + if (vout->buffer_allocated) + videobuf_mmap_free(q); + + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__); + return ret; +} + +static int omap_vout_open(struct file *file) +{ + struct videobuf_queue *q; + struct omap_vout_device *vout = NULL; + + vout = video_drvdata(file); + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__); + + if (vout == NULL) + return -ENODEV; + + /* for now, we only support single open */ + if (vout->opened) + return -EBUSY; + + vout->opened += 1; + + file->private_data = vout; + vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + + q = &vout->vbq; + video_vbq_ops.buf_setup = omap_vout_buffer_setup; + video_vbq_ops.buf_prepare = omap_vout_buffer_prepare; + video_vbq_ops.buf_release = omap_vout_buffer_release; + video_vbq_ops.buf_queue = omap_vout_buffer_queue; + spin_lock_init(&vout->vbq_lock); + + videobuf_queue_sg_init(q, &video_vbq_ops, NULL, &vout->vbq_lock, + vout->type, V4L2_FIELD_NONE, + sizeof(struct videobuf_buffer), vout); + + v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__); + return 0; +} + +/* + * V4L2 ioctls + */ +static int vidioc_querycap(struct file *file, void *fh, + struct v4l2_capability *cap) +{ + struct omap_vout_device *vout = fh; + + strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver)); + strlcpy(cap->card, vout->vfd->name, sizeof(cap->card)); + cap->bus_info[0] = '\0'; + cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT; + + return 0; +} + +static int vidioc_enum_fmt_vid_out(struct file *file, void *fh, + struct v4l2_fmtdesc *fmt) +{ + int index = fmt->index; + enum v4l2_buf_type type = fmt->type; + + fmt->index = index; + fmt->type = type; + if (index >= NUM_OUTPUT_FORMATS) + return -EINVAL; + + fmt->flags = omap_formats[index].flags; + strlcpy(fmt->description, omap_formats[index].description, + sizeof(fmt->description)); + 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 = fh; + + 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 = fh; + + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + + if (!ovl->manager || !ovl->manager->device) + return -EINVAL; + /* get the display device attached to the overlay */ + timing = &ovl->manager->device->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 = fh; + + if (vout->streaming) + return -EBUSY; + + mutex_lock(&vout->lock); + + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + + /* get the display device attached to the overlay */ + if (!ovl->manager || !ovl->manager->device) { + ret = -EINVAL; + goto s_fmt_vid_out_exit; + } + timing = &ovl->manager->device->panel.timings; + + /* We dont support RGB24-packed mode if vrfb rotation + * is enabled*/ + if ((rotation_enabled(vout)) && + f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) { + ret = -EINVAL; + goto s_fmt_vid_out_exit; + } + + /* get the framebuffer parameters */ + + if (rotate_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 samller 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); + + /* Save the changes in the overlay strcuture */ + ret = omapvid_init(vout, 0); + if (ret) { + v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n"); + goto s_fmt_vid_out_exit; + } + + ret = 0; + +s_fmt_vid_out_exit: + mutex_unlock(&vout->lock); + 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 = fh; + struct v4l2_window *win = &f->fmt.win; + + ret = omap_vout_try_window(&vout->fbuf, win); + + if (!ret) { + if (vout->vid == OMAP_VIDEO1) + win->global_alpha = 255; + else + win->global_alpha = f->fmt.win.global_alpha; + } + + 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 = fh; + struct v4l2_window *win = &f->fmt.win; + + mutex_lock(&vout->lock); + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + + ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win); + if (!ret) { + /* Video1 plane does not support global alpha */ + if (ovl->id == OMAP_DSS_VIDEO1) + vout->win.global_alpha = 255; + else + vout->win.global_alpha = f->fmt.win.global_alpha; + + vout->win.chromakey = f->fmt.win.chromakey; + } + mutex_unlock(&vout->lock); + return ret; +} + +static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh, + struct v4l2_fmtdesc *fmt) +{ + int index = fmt->index; + enum v4l2_buf_type type = fmt->type; + + fmt->index = index; + fmt->type = type; + if (index >= NUM_OUTPUT_FORMATS) + return -EINVAL; + + fmt->flags = omap_formats[index].flags; + strlcpy(fmt->description, omap_formats[index].description, + sizeof(fmt->description)); + fmt->pixelformat = omap_formats[index].pixelformat; + return 0; +} + +static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, + struct v4l2_format *f) +{ + u32 key_value = 0; + struct omap_overlay *ovl; + struct omapvideo_info *ovid; + struct omap_vout_device *vout = fh; + struct omap_overlay_manager_info info; + 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->global_alpha = vout->win.global_alpha; + + if (ovl->manager && ovl->manager->get_manager_info) { + ovl->manager->get_manager_info(ovl->manager, &info); + key_value = info.trans_key; + } + win->chromakey = key_value; + return 0; +} + +static int vidioc_cropcap(struct file *file, void *fh, + struct v4l2_cropcap *cropcap) +{ + struct omap_vout_device *vout = fh; + struct v4l2_pix_format *pix = &vout->pix; + + if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + + /* Width and height are always even */ + cropcap->bounds.width = pix->width & ~1; + cropcap->bounds.height = pix->height & ~1; + + omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect); + cropcap->pixelaspect.numerator = 1; + cropcap->pixelaspect.denominator = 1; + return 0; +} + +static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop) +{ + struct omap_vout_device *vout = fh; + + if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + crop->c = vout->crop; + return 0; +} + +static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop) +{ + int ret = -EINVAL; + struct omap_vout_device *vout = fh; + struct omapvideo_info *ovid; + struct omap_overlay *ovl; + struct omap_video_timings *timing; + + if (vout->streaming) + return -EBUSY; + + mutex_lock(&vout->lock); + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + + if (!ovl->manager || !ovl->manager->device) { + ret = -EINVAL; + goto s_crop_err; + } + /* get the display device attached to the overlay */ + timing = &ovl->manager->device->panel.timings; + + if (rotate_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; + } + + if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) + ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win, + &vout->fbuf, &crop->c); + +s_crop_err: + mutex_unlock(&vout->lock); + return ret; +} + +static int vidioc_queryctrl(struct file *file, void *fh, + struct v4l2_queryctrl *ctrl) +{ + int ret = 0; + + switch (ctrl->id) { + case V4L2_CID_ROTATE: + ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0); + break; + case V4L2_CID_BG_COLOR: + ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0); + break; + case V4L2_CID_VFLIP: + ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0); + break; + default: + ctrl->name[0] = '\0'; + ret = -EINVAL; + } + return ret; +} + +static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl) +{ + int ret = 0; + struct omap_vout_device *vout = fh; + + switch (ctrl->id) { + case V4L2_CID_ROTATE: + ctrl->value = vout->control[0].value; + break; + case V4L2_CID_BG_COLOR: + { + struct omap_overlay_manager_info info; + struct omap_overlay *ovl; + + 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); + ctrl->value = info.default_color; + break; + } + case V4L2_CID_VFLIP: + ctrl->value = vout->control[2].value; + break; + default: + ret = -EINVAL; + } + return ret; +} + +static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a) +{ + int ret = 0; + struct omap_vout_device *vout = fh; + + switch (a->id) { + case V4L2_CID_ROTATE: + { + int rotation = a->value; + + mutex_lock(&vout->lock); + + if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) { + mutex_unlock(&vout->lock); + ret = -EINVAL; + break; + } + + if (v4l2_rot_to_dss_rot(rotation, &vout->rotation, + vout->mirror)) { + mutex_unlock(&vout->lock); + ret = -EINVAL; + break; + } + + vout->control[0].value = rotation; + mutex_unlock(&vout->lock); + break; + } + case V4L2_CID_BG_COLOR: + { + struct omap_overlay *ovl; + unsigned int color = a->value; + struct omap_overlay_manager_info info; + + ovl = vout->vid_info.overlays[0]; + + mutex_lock(&vout->lock); + if (!ovl->manager || !ovl->manager->get_manager_info) { + mutex_unlock(&vout->lock); + ret = -EINVAL; + break; + } + + ovl->manager->get_manager_info(ovl->manager, &info); + info.default_color = color; + if (ovl->manager->set_manager_info(ovl->manager, &info)) { + mutex_unlock(&vout->lock); + ret = -EINVAL; + break; + } + + vout->control[1].value = color; + mutex_unlock(&vout->lock); + break; + } + case V4L2_CID_VFLIP: + { + struct omap_overlay *ovl; + struct omapvideo_info *ovid; + unsigned int mirror = a->value; + + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + + mutex_lock(&vout->lock); + + if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) { + mutex_unlock(&vout->lock); + ret = -EINVAL; + break; + } + vout->mirror = mirror; + vout->control[2].value = mirror; + mutex_unlock(&vout->lock); + break; + } + default: + ret = -EINVAL; + } + return ret; +} + +static int vidioc_reqbufs(struct file *file, void *fh, + struct v4l2_requestbuffers *req) +{ + int ret = 0; + unsigned int i, num_buffers = 0; + struct omap_vout_device *vout = fh; + struct videobuf_queue *q = &vout->vbq; + struct videobuf_dmabuf *dmabuf = NULL; + + if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0)) + return -EINVAL; + /* if memory is not mmp or userptr + return error */ + if ((V4L2_MEMORY_MMAP != req->memory) && + (V4L2_MEMORY_USERPTR != req->memory)) + return -EINVAL; + + mutex_lock(&vout->lock); + /* Cannot be requested when streaming is on */ + if (vout->streaming) { + ret = -EBUSY; + goto reqbuf_err; + } + + /* If buffers are already allocated free them */ + if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) { + if (vout->mmap_count) { + ret = -EBUSY; + goto reqbuf_err; + } + num_buffers = (vout->vid == OMAP_VIDEO1) ? + video1_numbuffers : video2_numbuffers; + for (i = num_buffers; i < vout->buffer_allocated; i++) { + dmabuf = videobuf_to_dma(q->bufs[i]); + omap_vout_free_buffer((u32)dmabuf->vmalloc, + vout->buffer_size); + vout->buf_virt_addr[i] = 0; + vout->buf_phy_addr[i] = 0; + } + vout->buffer_allocated = num_buffers; + videobuf_mmap_free(q); + } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) { + if (vout->buffer_allocated) { + videobuf_mmap_free(q); + for (i = 0; i < vout->buffer_allocated; i++) { + kfree(q->bufs[i]); + q->bufs[i] = NULL; + } + vout->buffer_allocated = 0; + } + } + + /*store the memory type in data structure */ + vout->memory = req->memory; + + INIT_LIST_HEAD(&vout->dma_queue); + + /* call videobuf_reqbufs api */ + ret = videobuf_reqbufs(q, req); + if (ret < 0) + goto reqbuf_err; + + vout->buffer_allocated = req->count; + for (i = 0; i < req->count; i++) { + dmabuf = videobuf_to_dma(q->bufs[i]); + dmabuf->vmalloc = (void *) vout->buf_virt_addr[i]; + dmabuf->bus_addr = (dma_addr_t) vout->buf_phy_addr[i]; + dmabuf->sglen = 1; + } +reqbuf_err: + mutex_unlock(&vout->lock); + return ret; +} + +static int vidioc_querybuf(struct file *file, void *fh, + struct v4l2_buffer *b) +{ + struct omap_vout_device *vout = fh; + + return videobuf_querybuf(&vout->vbq, b); +} + +static int vidioc_qbuf(struct file *file, void *fh, + struct v4l2_buffer *buffer) +{ + struct omap_vout_device *vout = fh; + struct videobuf_queue *q = &vout->vbq; + + if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) || + (buffer->index >= vout->buffer_allocated) || + (q->bufs[buffer->index]->memory != buffer->memory)) { + return -EINVAL; + } + if (V4L2_MEMORY_USERPTR == buffer->memory) { + if ((buffer->length < vout->pix.sizeimage) || + (0 == buffer->m.userptr)) { + return -EINVAL; + } + } + + if ((rotation_enabled(vout)) && + vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) { + v4l2_warn(&vout->vid_dev->v4l2_dev, + "DMA Channel not allocated for Rotation\n"); + return -EINVAL; + } + + return videobuf_qbuf(q, buffer); +} + +static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) +{ + struct omap_vout_device *vout = fh; + struct videobuf_queue *q = &vout->vbq; + + if (!vout->streaming) + return -EINVAL; + + if (file->f_flags & O_NONBLOCK) + /* Call videobuf_dqbuf for non blocking mode */ + return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1); + else + /* Call videobuf_dqbuf for blocking mode */ + return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0); +} + +static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i) +{ + int ret = 0, j; + u32 addr = 0, mask = 0; + struct omap_vout_device *vout = fh; + struct videobuf_queue *q = &vout->vbq; + struct omapvideo_info *ovid = &vout->vid_info; + + mutex_lock(&vout->lock); + + if (vout->streaming) { + ret = -EBUSY; + goto streamon_err; + } + + ret = videobuf_streamon(q); + if (ret) + goto streamon_err; + + if (list_empty(&vout->dma_queue)) { + ret = -EIO; + goto streamon_err1; + } + + /* Get the next frame from the buffer queue */ + vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next, + struct videobuf_buffer, queue); + /* Remove buffer from the buffer queue */ + list_del(&vout->cur_frm->queue); + /* Mark state of the current frame to active */ + vout->cur_frm->state = VIDEOBUF_ACTIVE; + /* Initialize field_id and started member */ + vout->field_id = 0; + + /* set flag here. Next QBUF will start DMA */ + vout->streaming = 1; + + vout->first_int = 1; + + if (omap_vout_calculate_offset(vout)) { + ret = -EINVAL; + goto streamon_err1; + } + addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i] + + vout->cropped_offset; + + mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD; + + omap_dispc_register_isr(omap_vout_isr, vout, mask); + + for (j = 0; j < ovid->num_overlays; j++) { + struct omap_overlay *ovl = ovid->overlays[j]; + + if (ovl->manager && ovl->manager->device) { + struct omap_overlay_info info; + ovl->get_overlay_info(ovl, &info); + info.enabled = 1; + info.paddr = addr; + if (ovl->set_overlay_info(ovl, &info)) { + ret = -EINVAL; + goto streamon_err1; + } + } + } + + /* First save the configuration in ovelray structure */ + ret = omapvid_init(vout, addr); + if (ret) + v4l2_err(&vout->vid_dev->v4l2_dev, + "failed to set overlay info\n"); + /* 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"); + + ret = 0; + +streamon_err1: + if (ret) + ret = videobuf_streamoff(q); +streamon_err: + mutex_unlock(&vout->lock); + return ret; +} + +static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i) +{ + u32 mask = 0; + int ret = 0, j; + struct omap_vout_device *vout = fh; + struct omapvideo_info *ovid = &vout->vid_info; + + if (!vout->streaming) + return -EINVAL; + + vout->streaming = 0; + mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD; + + omap_dispc_unregister_isr(omap_vout_isr, vout, mask); + + for (j = 0; j < ovid->num_overlays; j++) { + struct omap_overlay *ovl = ovid->overlays[j]; + + if (ovl->manager && ovl->manager->device) { + struct omap_overlay_info info; + + ovl->get_overlay_info(ovl, &info); + info.enabled = 0; + ret = ovl->set_overlay_info(ovl, &info); + if (ret) + v4l2_err(&vout->vid_dev->v4l2_dev, + "failed to update overlay info in streamoff\n"); + } + } + + /* Turn of the pipeline */ + ret = omapvid_apply_changes(vout); + if (ret) + v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in" + " streamoff\n"); + + INIT_LIST_HEAD(&vout->dma_queue); + ret = videobuf_streamoff(&vout->vbq); + + return ret; +} + +static int vidioc_s_fbuf(struct file *file, void *fh, + struct v4l2_framebuffer *a) +{ + int enable = 0; + struct omap_overlay *ovl; + struct omapvideo_info *ovid; + struct omap_vout_device *vout = fh; + 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); + info.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 = fh; + struct omap_overlay_manager_info info; + + ovid = &vout->vid_info; + ovl = ovid->overlays[0]; + + a->flags = 0x0; + a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY + | V4L2_FBUF_CAP_SRC_CHROMAKEY; + + 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 (ovl->manager && ovl->manager->get_manager_info) { + ovl->manager->get_manager_info(ovl->manager, &info); + if (info.alpha_enabled) + a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA; + } + + return 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_queryctrl = vidioc_queryctrl, + .vidioc_g_ctrl = vidioc_g_ctrl, + .vidioc_s_fbuf = vidioc_s_fbuf, + .vidioc_g_fbuf = vidioc_g_fbuf, + .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay, + .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay, + .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay, + .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay, + .vidioc_cropcap = vidioc_cropcap, + .vidioc_g_crop = vidioc_g_crop, + .vidioc_s_crop = vidioc_s_crop, + .vidioc_reqbufs = vidioc_reqbufs, + .vidioc_querybuf = vidioc_querybuf, + .vidioc_qbuf = vidioc_qbuf, + .vidioc_dqbuf = vidioc_dqbuf, + .vidioc_streamon = vidioc_streamon, + .vidioc_streamoff = vidioc_streamoff, +}; + +static const struct v4l2_file_operations omap_vout_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .mmap = omap_vout_mmap, + .open = omap_vout_open, + .release = omap_vout_release, +}; + +/* 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 v4l2_control *control; + struct omap_dss_device *display = + vout->vid_info.overlays[0]->manager->device; + + /* 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_ANY; + pix->bytesperline = pix->width * 2; + pix->sizeimage = pix->bytesperline * pix->height; + pix->priv = 0; + pix->colorspace = V4L2_COLORSPACE_JPEG; + + vout->bpp = RGB565_BPP; + vout->fbuf.fmt.width = display->panel.timings.x_res; + vout->fbuf.fmt.height = display->panel.timings.y_res; + + /* Set the data structures for the overlay parameters*/ + vout->win.global_alpha = 255; + vout->fbuf.flags = 0; + vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA | + V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY; + vout->win.chromakey = 0; + + omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win); + + /*Initialize the control variables for + rotation, flipping and background color. */ + control = vout->control; + control[0].id = V4L2_CID_ROTATE; + control[0].value = 0; + vout->rotation = 0; + vout->mirror = 0; + vout->control[2].id = V4L2_CID_HFLIP; + vout->control[2].value = 0; + vout->vrfb_bpp = 2; + + control[1].id = V4L2_CID_BG_COLOR; + control[1].value = 0; + + /* 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"); + return -ENOMEM; + } + vfd->release = video_device_release; + vfd->ioctl_ops = &vout_ioctl_ops; + + strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name)); + + /* need to register for a VID_HARDWARE_* ID in videodev.h */ + vfd->fops = &omap_vout_fops; + vfd->v4l2_dev = &vout->vid_dev->v4l2_dev; + mutex_init(&vout->lock); + + vfd->minor = -1; + return 0; + +} + +/* Setup video buffers */ +static int __init omap_vout_setup_video_bufs(struct platform_device *pdev, + int vid_num) +{ + u32 numbuffers; + int ret = 0, i, j; + int image_width, image_height; + struct video_device *vfd; + struct omap_vout_device *vout; + int static_vrfb_allocation = 0, vrfb_num_bufs = VRFB_NUM_BUFS; + struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); + struct omap2video_device *vid_dev = + container_of(v4l2_dev, struct omap2video_device, v4l2_dev); + + vout = vid_dev->vouts[vid_num]; + vfd = vout->vfd; + + numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers; + vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize; + dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size); + + for (i = 0; i < numbuffers; i++) { + vout->buf_virt_addr[i] = + omap_vout_alloc_buffer(vout->buffer_size, + (u32 *) &vout->buf_phy_addr[i]); + if (!vout->buf_virt_addr[i]) { + numbuffers = i; + ret = -ENOMEM; + goto free_buffers; + } + } + + for (i = 0; i < VRFB_NUM_BUFS; i++) { + if (omap_vrfb_request_ctx(&vout->vrfb_context[i])) { + dev_info(&pdev->dev, ": VRFB allocation failed\n"); + for (j = 0; j < i; j++) + omap_vrfb_release_ctx(&vout->vrfb_context[j]); + ret = -ENOMEM; + goto free_buffers; + } + } + vout->cropped_offset = 0; + + /* Calculate VRFB memory size */ + /* allocate for worst case size */ + image_width = VID_MAX_WIDTH / TILE_SIZE; + if (VID_MAX_WIDTH % TILE_SIZE) + image_width++; + + image_width = image_width * TILE_SIZE; + image_height = VID_MAX_HEIGHT / TILE_SIZE; + + if (VID_MAX_HEIGHT % TILE_SIZE) + image_height++; + + image_height = image_height * TILE_SIZE; + vout->smsshado_size = PAGE_ALIGN(image_width * image_height * 2 * 2); + + /* + * Request and Initialize DMA, for DMA based VRFB transfer + */ + vout->vrfb_dma_tx.dev_id = OMAP_DMA_NO_DEVICE; + vout->vrfb_dma_tx.dma_ch = -1; + vout->vrfb_dma_tx.req_status = DMA_CHAN_ALLOTED; + ret = omap_request_dma(vout->vrfb_dma_tx.dev_id, "VRFB DMA TX", + omap_vout_vrfb_dma_tx_callback, + (void *) &vout->vrfb_dma_tx, &vout->vrfb_dma_tx.dma_ch); + if (ret < 0) { + vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED; + dev_info(&pdev->dev, ": failed to allocate DMA Channel for" + " video%d\n", vfd->minor); + } + init_waitqueue_head(&vout->vrfb_dma_tx.wait); + + /* Allocate VRFB buffers if selected through bootargs */ + static_vrfb_allocation = (vid_num == 0) ? + vid1_static_vrfb_alloc : vid2_static_vrfb_alloc; + + /* statically allocated the VRFB buffer is done through + commands line aruments */ + if (static_vrfb_allocation) { + if (omap_vout_allocate_vrfb_buffers(vout, &vrfb_num_bufs, -1)) { + ret = -ENOMEM; + goto release_vrfb_ctx; + } + vout->vrfb_static_allocation = 1; + } + return 0; + +release_vrfb_ctx: + for (j = 0; j < VRFB_NUM_BUFS; j++) + omap_vrfb_release_ctx(&vout->vrfb_context[j]); + +free_buffers: + for (i = 0; i < numbuffers; i++) { + omap_vout_free_buffer(vout->buf_virt_addr[i], + vout->buffer_size); + vout->buf_virt_addr[i] = 0; + vout->buf_phy_addr[i] = 0; + } + 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); + + for (k = 0; k < pdev->num_resources; k++) { + + vout = kmalloc(sizeof(struct omap_vout_device), GFP_KERNEL); + if (!vout) { + dev_err(&pdev->dev, ": could not allocate memory\n"); + return -ENOMEM; + } + memset(vout, 0, sizeof(struct omap_vout_device)); + + 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; + + /* 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_GRABBER, k + 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); + + /* Configure the overlay structure */ + ret = omapvid_init(vid_dev->vouts[k], 0); + if (!ret) + goto success; + +error2: + omap_vout_release_vrfb(vout); + omap_vout_free_buffers(vout); +error1: + video_device_release(vfd); +error: + kfree(vout); + return ret; + +success: + dev_info(&pdev->dev, ": registered and initialized" + " video device %d\n", vfd->minor); + if (k == (pdev->num_resources - 1)) + return 0; + } + + return -ENODEV; +} +/* Driver functions */ +static void omap_vout_cleanup_device(struct omap_vout_device *vout) +{ + struct video_device *vfd; + + if (!vout) + return; + + vfd = vout->vfd; + 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); + } + } + + omap_vout_release_vrfb(vout); + omap_vout_free_buffers(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]->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 (pdev->num_resources == 0) { + dev_err(&pdev->dev, "probed for an unknown device\n"); + return -ENODEV; + } + + vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL); + if (vid_dev == NULL) + return -ENOMEM; + + vid_dev->num_displays = 0; + for_each_dss_dev(dssdev) { + omap_dss_get_device(dssdev); + 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); + if (ovl->manager && ovl->manager->device) { + def_display = ovl->manager->device; + } else { + dev_warn(&pdev->dev, "cannot find display\n"); + def_display = NULL; + } + if (def_display) { + ret = def_display->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); + } + /* set the update mode */ + if (def_display->caps & + OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) { +#ifdef CONFIG_FB_OMAP2_FORCE_AUTO_UPDATE + if (def_display->enable_te) + def_display->enable_te(def_display, 1); + if (def_display->set_update_mode) + def_display->set_update_mode(def_display, + OMAP_DSS_UPDATE_AUTO); +#else /* MANUAL_UPDATE */ + if (def_display->enable_te) + def_display->enable_te(def_display, 0); + if (def_display->set_update_mode) + def_display->set_update_mode(def_display, + OMAP_DSS_UPDATE_MANUAL); +#endif + } else { + if (def_display->set_update_mode) + def_display->set_update_mode(def_display, + OMAP_DSS_UPDATE_AUTO); + } + } + } + + 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->update) + display->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); + if (ovl->manager && ovl->manager->device) + def_display = ovl->manager->device; + + if (def_display) + def_display->disable(def_display); + } +probe_err0: + kfree(vid_dev); + return ret; +} + +static struct platform_driver omap_vout_driver = { + .driver = { + .name = VOUT_NAME, + }, + .probe = omap_vout_probe, + .remove = omap_vout_remove, +}; + +static int __init omap_vout_init(void) +{ + if (platform_driver_register(&omap_vout_driver) != 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); |