--- /dev/null
+/*
+ * 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 enum omap_color_mode 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);
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff