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V4L2 driver on Tomis DSS patches
This is the initial version of the V4L2 display driver
controlling the video pipelines of DSS.
Features Supported/Tested
1. V4L2 controlling only one video pipeline (video1).
Framework is for both. Only one is enabled right now.
2. Buffer size = VGA (which is same as LCD screen).
3. S_FMT, G_FMT, STREAMON, STREAMOFF, DQBUF, QBUF ioctls
tested on OMAP3 EVM board.
4. Interrupt mechanism is working as expected.
Features Not Supported/Tested
1. Mirroring, Rotation, Linking, windowing, cropping not supported.
2. Not tested with DVI and TV outputs.
Signed-off-by: Brijesh Jadav <brijesh.j@ti.com>
Hari Nagalla <hnagalla@ti.com>
Hardik Shah <hardik.shah@ti.com>
Manjunath Hadli <mrh@ti.com>
R Sivaraj <sivaraj@ti.com>
Vaibhav Hiremath <hvaibhav@ti.com>
---
arch/arm/mach-omap2/board-omap3evm.c | 23 +-
arch/arm/plat-omap/include/mach/omap34xx.h | 13 +
drivers/media/video/Kconfig | 9 +
drivers/media/video/Makefile | 2 +
drivers/media/video/omap/Kconfig | 12 +
drivers/media/video/omap/Makefile | 3 +
drivers/media/video/omap/omap_vout.c | 1589 ++++++++++++++++++++++++++++
drivers/media/video/omap/omap_voutdef.h | 138 +++
drivers/media/video/omap/omap_voutlib.c | 281 +++++
drivers/media/video/omap/omap_voutlib.h | 34 +
10 files changed, 2102 insertions(+), 2 deletions(-)
create mode 100644 drivers/media/video/omap/Kconfig
create mode 100644 drivers/media/video/omap/Makefile
create mode 100644 drivers/media/video/omap/omap_vout.c
create mode 100644 drivers/media/video/omap/omap_voutdef.h
create mode 100644 drivers/media/video/omap/omap_voutlib.c
create mode 100644 drivers/media/video/omap/omap_voutlib.h
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 53c54d8..87786f9 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -44,7 +44,6 @@
#include "twl4030-generic-scripts.h"
#include "mmc-twl4030.h"
-
static struct resource omap3evm_smc911x_resources[] = {
[0] = {
.start = OMAP3EVM_ETHR_START,
@@ -65,6 +64,25 @@ static struct platform_device omap3evm_smc911x_device = {
.resource = &omap3evm_smc911x_resources [0],
};
+static struct resource omap3evm_vout_resource[] = {
+ [0] = {
+ .start = OMAP34XX_VRFB_CTX4,
+ .end = (OMAP34XX_VRFB_CTX4 + OMAP34XX_VRFB_CTX_SIZE - 1),
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = OMAP34XX_VRFB_CTX8,
+ .end = (OMAP34XX_VRFB_CTX8 + OMAP34XX_VRFB_CTX_SIZE - 1),
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device omap3evm_vout_device = {
+ .name = "omap_vout",
+ .num_resources = ARRAY_SIZE(omap3evm_vout_resource),
+ .resource = &omap3evm_vout_resource[0],
+ .id = -1,
+};
static inline void __init omap3evm_init_smc911x(void)
{
int eth_cs;
@@ -348,7 +366,6 @@ static void evm_panel_disable_dvi(struct omap_display *display)
dvi_enabled = 0;
}
-
static struct omap_display_data evm_display_data_dvi = {
.type = OMAP_DISPLAY_TYPE_DPI,
.name = "dvi",
@@ -438,6 +455,8 @@ static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
static struct platform_device *omap3_evm_devices[] __initdata = {
&evm_dss_device,
&omap3evm_smc911x_device,
+ &omap3evm_vout_device,
+
};
static struct twl4030_hsmmc_info mmc[] __initdata = {
diff --git a/arch/arm/plat-omap/include/mach/omap34xx.h b/arch/arm/plat-omap/include/mach/omap34xx.h
index 0a137c1..3e0d9a0 100644
--- a/arch/arm/plat-omap/include/mach/omap34xx.h
+++ b/arch/arm/plat-omap/include/mach/omap34xx.h
@@ -56,6 +56,19 @@
#define OMAP34XX_SR1_BASE 0x480C9000
#define OMAP34XX_SR2_BASE 0x480CB000
+#define OMAP34XX_VRFB_CTX0 0x70000000
+#define OMAP34XX_VRFB_CTX1 0x74000000
+#define OMAP34XX_VRFB_CTX2 0x78000000
+#define OMAP34XX_VRFB_CTX3 0x7C000000
+#define OMAP34XX_VRFB_CTX4 0xE0000000
+#define OMAP34XX_VRFB_CTX5 0xE4000000
+#define OMAP34XX_VRFB_CTX6 0xE8000000
+#define OMAP34XX_VRFB_CTX7 0xEC000000
+#define OMAP34XX_VRFB_CTX8 0xF0000000
+#define OMAP34XX_VRFB_CTX9 0xF4000000
+#define OMAP34XX_VRFB_CTX10 0xF8000000
+#define OMAP34XX_VRFB_CTX11 0xFC000000
+#define OMAP34XX_VRFB_CTX_SIZE 0x4000000
#if defined(CONFIG_ARCH_OMAP3430)
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 47102c2..f6c2d7d 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -700,6 +700,15 @@ config VIDEO_CAFE_CCIC
CMOS camera controller. This is the controller found on first-
generation OLPC systems.
+config VIDEO_OMAP3
+ bool "OMAP2/OMAP3 V4L2-DSS drivers"
+ depends on VIDEO_DEV && (ARCH_OMAP24XX || ARCH_OMAP34XX)
+ default y
+ ---help---
+ V4L2 DSS driver support for OMAP2/3 based boards.
+
+source "drivers/media/video/omap/Kconfig"
+
config SOC_CAMERA
tristate "SoC camera support"
depends on VIDEO_V4L2 && HAS_DMA
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 16962f3..c2c02b6 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -99,6 +99,8 @@ obj-$(CONFIG_VIDEO_CX2341X) += cx2341x.o
obj-$(CONFIG_VIDEO_CAFE_CCIC) += cafe_ccic.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
+obj-$(CONFIG_VIDEO_OMAP3) += omap/
+
obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
obj-$(CONFIG_USB_DABUSB) += dabusb.o
diff --git a/drivers/media/video/omap/Kconfig b/drivers/media/video/omap/Kconfig
new file mode 100644
index 0000000..ac81f4c
--- /dev/null
+++ b/drivers/media/video/omap/Kconfig
@@ -0,0 +1,12 @@
+config VIDEO_OMAP_VIDEOLIB
+ tristate "OMAP Video out library"
+ depends on VIDEO_OMAP3
+ default VIDEO_OMAP3
+
+config VIDEO_OMAP_VIDEOOUT
+ tristate "OMAP Video out driver"
+ select VIDEOBUF_DMA_SG
+ select VIDEOBUF_GEN
+ depends on VIDEO_OMAP3
+ default VIDEO_OMAP3
+
diff --git a/drivers/media/video/omap/Makefile b/drivers/media/video/omap/Makefile
new file mode 100644
index 0000000..75e01d3
--- /dev/null
+++ b/drivers/media/video/omap/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_VIDEO_OMAP_VIDEOLIB) += omap_voutlib.o
+obj-$(CONFIG_VIDEO_OMAP_VIDEOOUT) += omap_vout.o
+
diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c
new file mode 100644
index 0000000..4ca565a
--- /dev/null
+++ b/drivers/media/video/omap/omap_vout.c
@@ -0,0 +1,1589 @@
+/*
+ * drivers/media/video/omap/omap_vout.c
+ *
+ * Copyright (C) 2005-2006 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) 2004 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 to used the new DSS paches by Tomi
+ * Changed driver to use video_ioctl2
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/videodev2.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <media/videobuf-dma-sg.h>
+#include <linux/input.h>
+#include <linux/dma-mapping.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-ioctl.h>
+#ifdef CONFIG_PM
+#include <linux/notifier.h>
+#include <linux/pm.h>
+#endif
+#ifdef CONFIG_DPM
+#include <linux/dpm.h>
+#endif
+
+#include <mach/display.h>
+
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/semaphore.h>
+#include <asm/processor.h>
+#include <mach/dma.h>
+
+#include "omap_voutlib.h"
+
+/*
+ * Un-comment this to use Debug Write call
+ */
+/* #define DEBUG_ALLOW_WRITE */
+
+#include "omap_voutdef.h"
+
+unsigned long timeout;
+
+#define OMAP_VIDEO1 0
+#define OMAP_VIDEO2 1
+
+/*
+ * Uncomment this if debugging support needs to be enabled
+ */
+
+/* #define DEBUG */
+
+#undef DEBUG
+#ifdef DEBUG
+#define DPRINTK(ARGS...) (printk(KERN_DEBUG "<%s>: ", __func__); \
+ printk(KERN_DEBUG ARGS))
+#else
+#define DPRINTK(x...)
+#endif
+
+struct omap_display *def_display;
+
+/* configuration macros */
+#define VOUT_NAME "omap_vout"
+
+#define QQVGA_WIDTH 160
+#define QQVGA_HEIGHT 120
+
+#define NUM_OF_VIDEO_CHANNELS 2
+
+#define VID_MAX_WIDTH 480 /* Largest width */
+#define VID_MAX_HEIGHT 640 /* Largest height */
+
+#define VID_MIN_WIDTH 0
+#define VID_MIN_HEIGHT 0
+
+#define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
+
+static struct omap_vout_device *saved_v1out, *saved_v2out;
+
+#define STREAMING_IS_ON() ((saved_v1out && saved_v1out->streaming) || \
+ (saved_v2out && saved_v2out->streaming))
+
+/*
+ * this is the layer being linked to (slave layer). possible values are:
+ * OMAP_VIDEO1: V1 is linked to V2. V1 uses V2's pix and crop.
+ * OMAP_VIDEO2: V2 is linked to V1. V2 uses V1's pix and crop.
+ * -1: no link.
+ */
+
+static int vout_linked;
+static spinlock_t vout_link_lock;
+
+static struct videobuf_queue_ops video_vbq_ops;
+
+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;
+module_param(video1_numbuffers, uint, S_IRUGO);
+module_param(video2_numbuffers, uint, S_IRUGO);
+module_param(video1_bufsize, uint, S_IRUGO);
+module_param(video2_bufsize, uint, S_IRUGO);
+
+static int omapvout_create_vout_devices(struct platform_device *pdev);
+static int omapvid_apply_changes(struct omap_vout_device *vout, u32 addr,
+ int init);
+static int omapvid_setup_overlay(struct omap_vout_device *vout,
+ struct omap_overlay *ovl, int posx, int posy,
+ int outw, int outh, u32 addr);
+static enum omap_color_mode video_mode_to_dss_mode(struct v4l2_pix_format *pix);
+static void omap_vout_isr(void *arg, unsigned int irqstatus);
+static void omap_vout_cleanup_device(struct omap_vout_device *vout);
+/* module parameters */
+
+/*
+ * Maximum amount of memory to use for rendering buffers.
+ * Default is enough to four (RGB24) VGA buffers.
+ */
+#define MAX_ALLOWED_VIDBUFFERS 4
+#if 0
+static struct v4l2_queryctrl omap_vout_qctrl[] = {
+ {
+ .id = V4L2_CID_ROTATION,
+ .name = "Rotation",
+ .minimum = 0,
+ .maximum = 270,
+ .step = 90,
+ .default_value = -1,
+ .flags = 0,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ }, {
+ .id = V4L2_CID_BG_COLOR,
+ .name = "Background Color",
+ .minimum = 0,
+ .maximum = 0xFFFFFF,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ }, {
+ .id = V4L2_CID_VFLIP,
+ .name = "Mirroring",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ .flags = 0,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ }
+};
+#endif
+/* 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 RGB565X as:
+ *
+ * Byte 0 Byte 1
+ * b4 b3 b2 b1 b0 g5 g4 g3 g2 g1 g0 r4 r3 r2 r1 r0
+ *
+ * We interpret RGB565X as:
+ *
+ * Byte 0 Byte 1
+ * r4 r3 r2 r1 r0 g5 g4 g3 g2 g1 g0 b4 b3 b2 b1 b0
+ */
+ .description = "RGB565, be",
+ .pixelformat = V4L2_PIX_FMT_RGB565X,
+ },
+ {
+ /* 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 (sizeof(omap_formats)/sizeof(omap_formats[0]))
+
+struct omap_vout_std_id_name {
+ v4l2_std_id id;
+ char name[25];
+};
+
+static unsigned long
+omap_vout_alloc_buffer(u32 buf_size, u32 *phys_addr)
+{
+ unsigned long virt_addr, addr;
+ u32 order, size;
+ 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;
+}
+
+static void
+omap_vout_free_buffer(unsigned long virtaddr, u32 phys_addr,
+ u32 buf_size)
+{
+ unsigned long addr = virtaddr;
+ u32 order, size;
+ 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);
+}
+
+static int omap_vout_try_format(struct v4l2_pix_format *pix,
+ struct v4l2_pix_format *def_pix)
+{
+ int ifmt, bpp = 0;
+
+ if (pix->width > VID_MAX_WIDTH)
+ pix->width = VID_MAX_WIDTH;
+ if (pix->height > VID_MAX_HEIGHT)
+ pix->height = VID_MAX_HEIGHT;
+
+ if (pix->width <= VID_MIN_WIDTH)
+ pix->width = def_pix->width;
+ if (pix->height <= VID_MIN_HEIGHT)
+ pix->height = def_pix->height;
+
+ 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 inline u32 omap_vout_uservirt_to_phys(u32 virtp)
+{
+ unsigned long physp = 0;
+ struct mm_struct *mm = current->mm;
+ struct vm_area_struct *vma;
+
+ 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 "omap_vout_uservirt_to_phys:\
+ get_user_pages failed\n");
+ return 0;
+ }
+ }
+
+ return physp;
+}
+
+/* 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)
+{
+ struct omap_vout_fh *fh = (struct omap_vout_fh *) q->priv_data;
+ struct omap_vout_device *vout = fh->vout;
+ int startindex = 0, i;
+ u32 phy_addr = 0, virt_addr = 0;
+
+ 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;
+
+ *count = 4;
+
+ if (V4L2_MEMORY_MMAP != vout->memory)
+ return 0;
+
+ *size = vout->buffer_size;
+ 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)
+ break;
+
+ vout->buf_virt_addr[i] = virt_addr;
+ vout->buf_phy_addr[i] = phy_addr;
+ }
+
+ *count = vout->buffer_allocated = i;
+ return 0;
+}
+
+/* This function will be called when VIDIOC_QBUF ioctl is called.
+ * It prepare buffers before give out for the display. This function
+ * 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 omap_vout_fh *fh = (struct omap_vout_fh *) q->priv_data;
+ struct omap_vout_device *vout = fh->vout;
+ struct videobuf_dmabuf *dmabuf = NULL;
+
+ 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);
+ }
+
+ {
+ dmabuf = videobuf_to_dma(q->bufs[vb->i]);
+
+ vout->queued_buf_addr[vb->i] = (u8 *) dmabuf->bus_addr;
+ }
+ 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_fh *fh =
+ (struct omap_vout_fh *) q->priv_data;
+ struct omap_vout_device *vout = fh->vout;
+
+ /* Driver is also maintainig a queue. So enqueue buffer in the driver
+ * queue */
+ list_add_tail(&vb->queue, &vout->dma_queue);
+
+ vb->state = VIDEOBUF_PREPARED;
+}
+
+/* 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_fh *fh = (struct omap_vout_fh *) q->priv_data;
+ struct omap_vout_device *vout = fh->vout;
+
+ 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;
+ DPRINTK("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;
+ DPRINTK("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)
+{
+ struct omap_vout_fh *fh = file->private_data;
+ struct omap_vout_device *vout = fh->vout;
+ struct videobuf_queue *q = &fh->vbq;
+ unsigned long size = (vma->vm_end - vma->vm_start);
+ unsigned long start = vma->vm_start;
+ int i;
+ void *pos;
+ struct videobuf_dmabuf *dmabuf = NULL;
+
+ DPRINTK("pgoff=0x%lx, start=0x%lx, end=0x%lx\n", 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) {
+ DPRINTK("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;
+ 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++;
+ return 0;
+}
+
+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->buf_phy_addr[i], vout->buffer_size);
+ }
+ vout->buf_virt_addr[i] = 0;
+ vout->buf_phy_addr[i] = 0;
+ }
+ for (i = 0; i < 4; i++) {
+ if (vout->smsshado_virt_addr[i]) {
+ omap_vout_free_buffer(vout->smsshado_virt_addr[i],
+ vout->smsshado_phy_addr[i],
+ vout->smsshado_size);
+ vout->smsshado_virt_addr[i] = 0;
+ vout->smsshado_phy_addr[i] = 0;
+ }
+ }
+ vout->buffer_allocated = num_buffers;
+}
+
+static int omap_vout_release(struct inode *inode, struct file *file)
+{
+
+ struct omap_vout_fh *fh = file->private_data;
+ struct omap_vout_device *vout;
+ struct videobuf_queue *q;
+ unsigned int t;
+ struct omapvideo_info *ovid;
+ unsigned int r;
+
+ vout = fh->vout;
+
+ ovid = &(vout->vid_info);
+ if (fh == 0)
+ return 0;
+ if (!vout)
+ return 0;
+ q = &fh->vbq;
+
+ /* Disable all the overlay managers connected with this interface */
+ for (t = 0; t < ovid->num_overlays; t++) {
+ struct omap_overlay *ovl = ovid->overlays[t];
+ if (ovl->manager && ovl->manager->display)
+ ovl->enable(ovl, 0);
+ }
+
+ r = omapvid_apply_changes(vout, 0, 0);
+ if (r)
+ printk(KERN_ERR VOUT_NAME "failed to change mode\n");
+
+ /* Even if apply changes fails we should continue
+ freeing allocated memeory */
+ if (fh->io_allowed) {
+ videobuf_streamoff(q);
+ videobuf_queue_cancel(q);
+ /* Free all buffers */
+ omap_vout_free_allbuffers(vout);
+ videobuf_mmap_free(q);
+ }
+
+ if (vout->streaming == fh) {
+ omap_dispc_unregister_isr(omap_vout_isr);
+ vout->streaming = NULL;
+ }
+
+ if (vout->mmap_count != 0)
+ vout->mmap_count = 0;
+
+ vout->opened -= 1;
+ file->private_data = NULL;
+
+ if (vout->buffer_allocated)
+ videobuf_mmap_free(q);
+
+ kfree(fh);
+
+ /* need to remove the link when the either slave or master is gone */
+ spin_lock(&vout_link_lock);
+ if (vout_linked != -1)
+ vout_linked = -1;
+ spin_unlock(&vout_link_lock);
+
+ return r;
+}
+
+static int omap_vout_open(struct inode *inode, struct file *file)
+{
+ int minor = MINOR(file->f_dentry->d_inode->i_rdev);
+ struct omap_vout_device *vout = NULL;
+ struct omap_vout_fh *fh;
+ struct videobuf_queue *q;
+
+ DPRINTK("entering\n");
+
+ if (saved_v1out && saved_v1out->vfd
+ && (saved_v1out->vfd->minor == minor)) {
+ vout = saved_v1out;
+ }
+
+ if (vout == NULL) {
+ if (saved_v2out && saved_v2out->vfd
+ && (saved_v2out->vfd->minor == minor)) {
+ vout = saved_v2out;
+ }
+ }
+
+ if (vout == NULL)
+ return -ENODEV;
+
+ /* for now, we only support single open */
+ if (vout->opened)
+ return -EBUSY;
+
+ vout->opened += 1;
+
+ fh = kmalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh)
+ return -ENOMEM;
+ memset(fh, 0, sizeof(*fh));
+
+ file->private_data = fh;
+ fh->vout = vout;
+ fh->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+
+ q = &fh->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,
+ fh->type, V4L2_FIELD_NONE, sizeof
+ (struct videobuf_buffer), fh);
+
+ return 0;
+}
+
+static int vidioc_querycap(struct file *file, void *fh,
+ struct v4l2_capability *cap)
+{
+ struct omap_vout_device *vout = ((struct omap_vout_fh *) fh)->vout;
+
+ memset(cap, 0, sizeof(*cap));
+ strncpy(cap->driver, VOUT_NAME,
+ sizeof(cap->driver));
+ strncpy(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;
+
+ memset(fmt, 0, sizeof(*fmt));
+ fmt->index = index;
+ fmt->type = type;
+ if (index >= NUM_OUTPUT_FORMATS)
+ return -EINVAL;
+
+ fmt->flags = omap_formats[index].flags;
+ strncpy(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 = ((struct omap_vout_fh *) fh)->vout;
+
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ memset(pix, 0, sizeof(*pix));
+ *pix = vout->pix;
+ return 0;
+
+}
+
+static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct omap_vout_device *vout = ((struct omap_vout_fh *) fh)->vout;
+
+ if (vout->streaming)
+ return -EBUSY;
+
+ vout->fbuf.fmt.height = def_display->y_res;
+ vout->fbuf.fmt.width = def_display->x_res;
+
+ omap_vout_try_format(&f->fmt.pix, &vout->fbuf.fmt);
+ return 0;
+}
+
+static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
+ struct v4l2_format *f)
+{
+ struct omap_vout_fh *ofh = (struct omap_vout_fh *)fh;
+ struct omap_vout_device *vout = ofh->vout;
+ int bpp;
+ int r;
+
+ if (vout->streaming)
+ return -EBUSY;
+
+ if (down_interruptible(&vout->lock))
+ return -EINVAL;
+
+ /* get the framebuffer parameters */
+ vout->fbuf.fmt.height = def_display->y_res;
+ vout->fbuf.fmt.width = def_display->x_res;
+
+ /* change to samller size is OK */
+ bpp = omap_vout_try_format(&f->fmt.pix, &vout->fbuf.fmt);
+ 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;
+
+ /* set default crop and win */
+ omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
+
+ /* Save the changes in the overlay strcuture */
+ r = omapvid_apply_changes(vout, 0, 0);
+ if (r)
+ printk(KERN_ERR VOUT_NAME "failed to change mode\n");
+
+ up(&vout->lock);
+ return 0;
+}
+
+static int vidioc_reqbufs(struct file *file, void *fh,
+ struct v4l2_requestbuffers *req)
+{
+ struct omap_vout_device *vout = ((struct omap_vout_fh *) fh)->vout;
+ struct videobuf_queue *q = &(((struct omap_vout_fh *) fh)->vbq);
+ unsigned int i, num_buffers = 0;
+ int ret = 0;
+ struct videobuf_dmabuf *dmabuf = NULL;
+
+ if (down_interruptible(&vout->lock))
+ return -EINVAL;
+ /* don't allow to buffer request for the linked layer */
+ if (vout->vid == vout_linked) {
+ up(&vout->lock);
+ return -EINVAL;
+ }
+
+ if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0)) {
+ up(&vout->lock);
+ return -EINVAL;
+ }
+ /* if memory is not mmp or userptr
+ return error */
+ if ((V4L2_MEMORY_MMAP != req->memory) &&
+ (V4L2_MEMORY_USERPTR != req->memory)) {
+ up(&vout->lock);
+ return -EINVAL;
+ }
+
+ /* Cannot be requested when streaming is on */
+ if (vout->streaming) {
+ up(&vout->lock);
+ return -EBUSY;
+ }
+
+ /* If buffers are already allocated free them */
+ if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
+ if (vout->mmap_count) {
+ up(&vout->lock);
+ return -EBUSY;
+ }
+ 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,
+ dmabuf->bus_addr, 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;
+ }
+ }
+ ((struct omap_vout_fh *) fh)->io_allowed = 1;
+
+ /*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) {
+ up(&vout->lock);
+ return ret;
+ }
+
+ 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;
+ }
+ up(&vout->lock);
+ return 0;
+}
+static int vidioc_querybuf(struct file *file, void *fh,
+ struct v4l2_buffer *b)
+{
+ return videobuf_querybuf(&(((struct omap_vout_fh *) fh)->vbq), b);
+}
+static int vidioc_qbuf(struct file *file, void *fh,
+ struct v4l2_buffer *buffer)
+{
+ struct omap_vout_fh *ofh = (struct omap_vout_fh *)fh;
+ struct omap_vout_device *vout = ofh->vout;
+ struct videobuf_queue *q = &ofh->vbq;
+ int ret = 0;
+
+ if (!ofh->io_allowed)
+ return -EINVAL;
+
+ timeout = HZ / 5;
+ timeout += jiffies;
+
+ 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;
+ }
+ }
+
+ ret = videobuf_qbuf(q, buffer);
+ return ret;
+}
+static int vidioc_dqbuf(struct file *file, void *fh,
+ struct v4l2_buffer *b)
+{
+ struct omap_vout_fh *ofh = (struct omap_vout_fh *)fh;
+ struct omap_vout_device *vout = ofh->vout;
+ struct videobuf_queue *q = &ofh->vbq;
+ int ret = 0;
+ /* don't allow to dequeue buffer for the linked layer */
+ if (vout->vid == vout_linked)
+ return -EINVAL;
+
+ if (!vout->streaming || !ofh->io_allowed)
+ return -EINVAL;
+
+ if (file->f_flags & O_NONBLOCK)
+ /* Call videobuf_dqbuf for non blocking mode */
+ ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
+ else
+ /* Call videobuf_dqbuf for blocking mode */
+ ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
+ return ret;
+}
+#define DISPC_IRQSTATUS_VSYNC (1 << 1)
+static int vidioc_streamon(struct file *file, void *fh,
+ enum v4l2_buf_type i)
+{
+ struct omap_vout_fh *ofh = (struct omap_vout_fh *)fh;
+ struct omap_vout_device *vout = ofh->vout;
+ struct videobuf_queue *q = &ofh->vbq;
+ u32 addr = 0;
+ int r = 0;
+ int t;
+ struct omapvideo_info *ovid = &(vout->vid_info);
+ u32 mask = 0;
+
+ if (down_interruptible(&vout->lock))
+ return -EINVAL;
+ if (!ofh->io_allowed) {
+ up(&vout->lock);
+ return -EINVAL;
+ }
+
+ if (vout->streaming) {
+ up(&vout->lock);
+ return -EBUSY;
+ }
+
+ r = videobuf_streamon(q);
+ if (r < 0) {
+ up(&vout->lock);
+ return r;
+ }
+
+ if (list_empty(&vout->dma_queue)) {
+ up(&vout->lock);
+ return -EIO;
+ }
+ /* Get the next frame from the buffer queue */
+ vout->nextFrm = vout->curFrm = list_entry(vout->dma_queue.next,
+ struct videobuf_buffer, queue);
+ /* Remove buffer from the buffer queue */
+ list_del(&vout->curFrm->queue);
+ /* Mark state of the current frame to active */
+ vout->curFrm->state = VIDEOBUF_ACTIVE;
+ /* Initialize field_id and started member */
+ vout->field_id = 0;
+
+ /* set flag here. Next QBUF will start DMA */
+ vout->streaming = ofh;
+
+ vout->first_int = 1;
+
+ addr = (unsigned long) vout->queued_buf_addr[vout->curFrm->i] +
+ vout->cropped_offset;
+
+ mask = DISPC_IRQSTATUS_VSYNC;
+ r = omap_dispc_register_isr(omap_vout_isr, vout, mask);
+
+ for (t = 0; t < ovid->num_overlays; t++) {
+ struct omap_overlay *ovl = ovid->overlays[t];
+ if (ovl->manager && ovl->manager->display)
+ ovl->enable(ovl, 1);
+ }
+
+ r = omapvid_apply_changes(vout, addr, 0);
+ if (r)
+ printk(KERN_ERR VOUT_NAME "failed to change mode\n");
+
+ up(&vout->lock);
+ return 0;
+}
+static int vidioc_streamoff(struct file *file, void *fh,
+ enum v4l2_buf_type i)
+{
+
+ struct omap_vout_fh *ofh = (struct omap_vout_fh *)fh;
+ struct omap_vout_device *vout = ofh->vout;
+ int t, r = 0;
+ struct omapvideo_info *ovid = &(vout->vid_info);
+
+ if (!ofh->io_allowed)
+ return -EINVAL;
+ if (!vout->streaming)
+ return -EINVAL;
+ if (vout->streaming == fh) {
+ vout->streaming = NULL;
+
+ omap_dispc_unregister_isr(omap_vout_isr);
+
+ for (t = 0; t < ovid->num_overlays; t++) {
+ struct omap_overlay *ovl = ovid->overlays[t];
+ if (ovl->manager && ovl->manager->display)
+ ovl->enable(ovl, 0);
+ }
+
+ r = omapvid_apply_changes(vout, 0, 0);
+ if (r) {
+ printk(KERN_ERR VOUT_NAME "failed to change mode\n");
+ return r;
+ }
+ }
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops vout_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .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_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+};
+
+static struct file_operations omap_vout_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .ioctl = video_ioctl2,
+ .mmap = omap_vout_mmap,
+ .open = omap_vout_open,
+ .release = omap_vout_release,
+};
+
+static int omap_vout_remove(struct platform_device *pdev)
+{
+
+ struct omap2video_device *vid_dev = platform_get_drvdata(pdev);
+ int k;
+
+ 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_display(vid_dev->displays[k]);
+ }
+ kfree(vid_dev);
+ return 0;
+}
+
+static int omap_vout_probe(struct platform_device *pdev)
+{
+ int r = 0, i, t;
+ struct omap2video_device *vid_dev = NULL;
+ struct omap_overlay *ovl;
+
+ if (pdev->num_resources == 0) {
+ dev_err(&pdev->dev, "probed for an unknown device\n");
+ r = -ENODEV;
+ return r;
+ }
+
+ vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
+ if (vid_dev == NULL) {
+ r = -ENOMEM;
+ return r;
+ }
+
+ platform_set_drvdata(pdev, vid_dev);
+
+ vid_dev->num_displays = 0;
+ t = omap_dss_get_num_displays();
+ for (i = 0; i < t; i++) {
+ struct omap_display *display;
+ display = omap_dss_get_display(i);
+ if (!display) {
+ dev_err(&pdev->dev, "probed for an unknown device\n");
+ r = -EINVAL;
+ goto error0;
+ }
+ vid_dev->displays[vid_dev->num_displays++] = display;
+ }
+
+ if (vid_dev->num_displays == 0) {
+ dev_err(&pdev->dev, "probed for an unknown device\n");
+ r = -EINVAL;
+ goto error0;
+ }
+
+ 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);
+
+ /* video1 overlay should be the default one. find a display
+ * connected to that, and use it as default display */
+ ovl = omap_dss_get_overlay(1);
+ if (ovl->manager && ovl->manager->display) {
+ def_display = ovl->manager->display;
+ } else {
+ dev_err(&pdev->dev, "probed for an unknown device\n");
+ r = -EINVAL;
+ goto error0;
+ }
+
+ r = omapvout_create_vout_devices(pdev);
+ if (r)
+ goto error0;
+
+ r = def_display->enable(def_display);
+ if (r) {
+ /* Here we are not considering a error as display may be
+ enabled by frame buffer driver */
+ printk(KERN_WARNING "Display already enabled\n");
+ }
+
+ /* set the update mode */
+ if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
+#ifdef CONFIG_FB_OMAP2_FORCE_AUTO_UPDATE
+ if (def_display->set_update_mode)
+ def_display->set_update_mode(def_display,
+ OMAP_DSS_UPDATE_AUTO);
+ if (def_display->enable_te)
+ def_display->enable_te(def_display, 1);
+#else
+ if (def_display->set_update_mode)
+ def_display->set_update_mode(def_display,
+ OMAP_DSS_UPDATE_MANUAL);
+ if (def_display->enable_te)
+ def_display->enable_te(def_display, 0);
+#endif
+ } else {
+ if (def_display->set_update_mode)
+ def_display->set_update_mode(def_display,
+ OMAP_DSS_UPDATE_AUTO);
+ }
+
+ for (i = 0; i < vid_dev->num_displays; i++) {
+ struct omap_display *display = vid_dev->displays[i];
+
+ if (display->update)
+ display->update(display,
+ 0, 0,
+ display->x_res, display->y_res);
+ }
+ printk(KERN_INFO "display->updated\n");
+ return 0;
+
+error0:
+ kfree(vid_dev);
+ return r;
+}
+
+static int omapvout_create_vout_devices(struct platform_device *pdev)
+{
+ int r = 0, i, k;
+ struct omap_vout_device *vout;
+ struct video_device *vfd;
+ struct v4l2_pix_format *pix;
+ u32 numbuffers;
+ int index_i, index_j;
+ struct omap2video_device *vid_dev = platform_get_drvdata(pdev);
+
+ for (k = 0; k < pdev->num_resources; k++) {
+ vout = kmalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
+ if (!vout) {
+ printk(KERN_ERR VOUT_NAME ": could not allocate \
+ memory\n");
+ return -ENOMEM;
+ }
+
+ memset(vout, 0, sizeof(struct omap_vout_device));
+ vout->vid = k + 1;
+
+ /* 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 = def_display->x_res;
+ vout->fbuf.fmt.height = def_display->y_res;
+
+ omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
+
+ /* 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");
+ kfree(vout);
+ return -ENOMEM;
+ }
+ vfd->release = video_device_release;
+ vfd->ioctl_ops = &vout_ioctl_ops;
+
+ strncpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
+ vfd->vfl_type = VID_TYPE_OVERLAY | VID_TYPE_CHROMAKEY;
+ /* need to register for a VID_HARDWARE_* ID in videodev.h */
+ vfd->fops = &omap_vout_fops;
+ video_set_drvdata(vfd, vout);
+ vfd->minor = -1;
+
+ index_i = 4;
+ index_j = 0;
+
+ numbuffers = (k == 0) ?
+ video1_numbuffers : video2_numbuffers;
+ vout->buffer_size = (k == 0) ?
+ video1_bufsize : video2_bufsize;
+ printk(KERN_INFO "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;
+ goto error;
+ }
+ }
+
+ vout->suspended = 0;
+ init_waitqueue_head(&vout->suspend_wq);
+ init_MUTEX(&vout->lock);
+
+ if (video_register_device(vfd, VFL_TYPE_GRABBER, k) < 0) {
+ printk(KERN_ERR VOUT_NAME ": could not register \
+ Video for Linux device\n");
+ vfd->minor = -1;
+ goto error;
+ }
+
+ printk(KERN_INFO VOUT_NAME ": registered device video%d \
+ [v4l2]\n",
+ vfd->minor);
+
+ if (k == 0)
+ saved_v1out = vout;
+ else
+ saved_v2out = vout;
+
+ vid_dev->vouts[k] = vout;
+ vout->vid_info.vid_dev = vid_dev;
+ vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
+ vout->vid_info.num_overlays = 1;
+ vout->vid_info.id = k + 1;
+ vid_dev->num_videos++;
+
+ r = omapvid_apply_changes(vid_dev->vouts[k], 0, 1);
+
+ if (!r)
+ return 0;
+
+ printk(KERN_ERR VOUT_NAME ": could not register Video for \
+ Linux device\n");
+error:
+ for (i = 0; i < numbuffers; i++) {
+ omap_vout_free_buffer(vout->buf_virt_addr[i],
+ vout->buf_phy_addr[i],
+ vout->buffer_size);
+ vout->buf_virt_addr[i] = 0;
+ vout->buf_phy_addr[i] = 0;
+ }
+ video_device_release(vfd);
+ kfree(vout);
+ return r;
+ }
+ return -ENODEV;
+}
+
+int omapvid_apply_changes(struct omap_vout_device *vout, u32 addr, int init)
+{
+ int r = 0;
+ struct omapvideo_info *ovid = &(vout->vid_info);
+ struct omap_overlay *ovl;
+ int posx, posy;
+ int outw, outh;
+ int i;
+
+ for (i = 0; i < ovid->num_overlays; i++) {
+ ovl = ovid->overlays[i];
+
+ if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
+ outw = vout->win.w.width;
+ outh = vout->win.w.height;
+
+ } else {
+ outw = vout->win.w.width;
+ outh = vout->win.w.height;
+ }
+ if (init) {
+ posx = 0;
+ posy = 0;
+ } else {
+ posx = vout->win.w.left;
+ posy = vout->win.w.top;
+ }
+
+ r = omapvid_setup_overlay(vout, ovl, posx, posy, outw,
+ outh, addr);
+ if (r)
+ goto err;
+
+ /* disabled for now. if the display has changed, var
+ * still contains the old timings. */
+#if 0
+ if (display && display->set_timings) {
+ struct omap_video_timings timings;
+ timings.pixel_clock = PICOS2KHZ(var->pixclock);
+ timings.hfp = var->left_margin;
+ timings.hbp = var->right_margin;
+ timings.vfp = var->upper_margin;
+ timings.vbp = var->lower_margin;
+ timings.hsw = var->hsync_len;
+ timings.vsw = var->vsync_len;
+
+ display->set_timings(display, &timings);
+ }
+#endif
+ if (!init && ovl->manager)
+ ovl->manager->apply(ovl->manager);
+
+ }
+ return 0;
+err:
+ printk("apply_changes failed\n");
+ return r;
+}
+
+int omapvid_setup_overlay(struct omap_vout_device *vout,
+ struct omap_overlay *ovl, int posx, int posy, int outw,
+ int outh, u32 addr)
+{
+ int r = 0;
+ enum omap_color_mode mode = 0;
+
+ if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
+ (outw != vout->pix.width || outh != vout->pix.height)) {
+ r = -EINVAL;
+ goto err;
+ }
+
+ mode = video_mode_to_dss_mode(&(vout->pix));
+
+ if (mode == -EINVAL) {
+ r = -EINVAL;
+ goto err;
+ }
+
+ r = ovl->setup_input(ovl, (u32)addr, (void *)addr, vout->pix.width,
+ vout->crop.width, vout->crop.height, mode);
+
+ if (r)
+ goto err;
+
+ r = ovl->setup_output(ovl, posx, posy, outw, outh);
+
+ if (r)
+ goto err;
+
+ return 0;
+
+err:
+ printk(KERN_WARNING "setup_overlay failed\n");
+ return r;
+}
+
+static enum omap_color_mode video_mode_to_dss_mode(struct v4l2_pix_format *pix)
+{
+ switch (pix->pixelformat) {
+
+ case 0:
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ return OMAP_DSS_COLOR_YUV2;
+
+ case V4L2_PIX_FMT_UYVY:
+ return OMAP_DSS_COLOR_UYVY;
+
+ case V4L2_PIX_FMT_RGB565:
+ return OMAP_DSS_COLOR_RGB16;
+
+ case V4L2_PIX_FMT_RGB24:
+ return OMAP_DSS_COLOR_RGB24P;
+
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static struct platform_driver omap_vout_driver = {
+ .driver = {
+ .name = VOUT_NAME,
+ },
+ .probe = omap_vout_probe,
+ .remove = omap_vout_remove,
+};
+
+void
+omap_vout_isr(void *arg, unsigned int irqstatus)
+{
+ int r;
+
+ struct timeval timevalue;
+ struct omap_vout_device *vout =
+ (struct omap_vout_device *) arg;
+ u32 addr;
+
+ if (!vout->streaming)
+ return;
+
+ spin_lock(&vout->vbq_lock);
+ do_gettimeofday(&timevalue);
+
+ if (!(irqstatus & DISPC_IRQSTATUS_VSYNC))
+ return;
+
+ if (!vout->first_int && (vout->curFrm != vout->nextFrm)) {
+ vout->curFrm->ts = timevalue;
+ vout->curFrm->state = VIDEOBUF_DONE;
+ wake_up_interruptible(&vout->curFrm->done);
+ vout->curFrm = vout->nextFrm;
+ }
+ vout->first_int = 0;
+ if (list_empty(&vout->dma_queue)) {
+ spin_unlock(&vout->vbq_lock);
+ return;
+ }
+
+ vout->nextFrm = list_entry(vout->dma_queue.next,
+ struct videobuf_buffer, queue);
+ list_del(&vout->nextFrm->queue);
+
+ vout->nextFrm->state = VIDEOBUF_ACTIVE;
+
+ addr = (unsigned long) vout->queued_buf_addr[vout->nextFrm->i] +
+ vout->cropped_offset;
+
+ r = omapvid_apply_changes(vout, addr, 0);
+ if (r)
+ printk(KERN_ERR VOUT_NAME "failed to change mode\n");
+ spin_unlock(&vout->vbq_lock);
+}
+
+static void omap_vout_cleanup_device(struct omap_vout_device *vout)
+{
+
+ struct video_device *vfd;
+ int i, numbuffers;
+
+ if (!vout)
+ return;
+ vfd = vout->vfd;
+
+ if (vfd) {
+ if (vfd->minor == -1) {
+ /*
+ * 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);
+ }
+ }
+
+ /* Allocate memory for the buffes */
+ 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->buf_phy_addr[i], vout->buffer_size);
+ vout->buf_phy_addr[i] = 0;
+ vout->buf_virt_addr[i] = 0;
+ }
+
+ kfree(vout);
+
+ if (!(vout->vid))
+ saved_v1out = NULL;
+ else
+ saved_v2out = NULL;
+}
+
+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);
+}
+
+MODULE_AUTHOR("Texas Instruments.");
+MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
+MODULE_LICENSE("GPL");
+
+late_initcall(omap_vout_init);
+module_exit(omap_vout_cleanup);
diff --git a/drivers/media/video/omap/omap_voutdef.h b/drivers/media/video/omap/omap_voutdef.h
new file mode 100644
index 0000000..9e96540
--- /dev/null
+++ b/drivers/media/video/omap/omap_voutdef.h
@@ -0,0 +1,138 @@
+/*
+ * drivers/media/video/omap/omap_voutdef.h
+ *
+ * Copyright (C) 2005 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.
+ */
+
+#ifndef OMAP_VOUTDEF_H
+#define OMAP_VOUTDEF_H
+
+#include <mach/display.h>
+
+#define YUYV_BPP 2
+#define RGB565_BPP 2
+#define RGB24_BPP 3
+#define RGB32_BPP 4
+#define TILE_SIZE 32
+#define YUYV_VRFB_BPP 2
+#define RGB_VRFB_BPP 1
+
+/*
+ * This structure is used to store the DMA transfer parameters
+ * for VRFB hidden buffer
+ */
+struct vid_vrfb_dma {
+ int dev_id;
+ int dma_ch;
+ int req_status;
+ int tx_status;
+ wait_queue_head_t wait;
+};
+
+struct omapvideo_info {
+ int id;
+ int num_overlays;
+ struct omap_overlay *overlays[3];
+ struct omap2video_device *vid_dev;
+};
+
+struct omap2video_device {
+ struct device *dev;
+ struct mutex mtx;
+
+ int state;
+
+ int num_videos;
+ struct omap_vout_device *vouts[10];
+
+ int num_displays;
+ struct omap_display *displays[10];
+ int num_overlays;
+ struct omap_overlay *overlays[10];
+ int num_managers;
+ struct omap_overlay_manager *managers[10];
+};
+
+/* per-device data structure */
+struct omap_vout_device {
+
+ struct omapvideo_info vid_info;
+ struct device dev;
+ struct video_device *vfd;
+ int vid;
+ int opened;
+
+ /* Power management suspend lockout stuff */
+ int suspended;
+ wait_queue_head_t suspend_wq;
+
+ /* we don't allow to change image fmt/size once buffer has
+ * been allocated
+ */
+ int buffer_allocated;
+ /* allow to reuse previosuly allocated buffer which is big enough */
+ int buffer_size;
+ /* keep buffer info accross opens */
+ unsigned long buf_virt_addr[VIDEO_MAX_FRAME];
+ unsigned long buf_phy_addr[VIDEO_MAX_FRAME];
+ unsigned int buf_memory_type;
+
+ /* we don't allow to request new buffer when old buffers are
+ * still mmaped
+ */
+ int mmap_count;
+
+ spinlock_t vbq_lock; /* spinlock for videobuf queues */
+ unsigned long field_count; /* field counter for videobuf_buffer */
+
+ /* non-NULL means streaming is in progress. */
+ struct omap_vout_fh *streaming;
+
+ struct v4l2_pix_format pix;
+ struct v4l2_rect crop;
+ struct v4l2_window win;
+ struct v4l2_framebuffer fbuf;
+
+ /* Lock to protect the shared data structures in ioctl */
+ struct semaphore lock;
+
+ /* rotation variablse goes here */
+ unsigned long sms_rot_virt[4]; /* virtual addresss for four angles */
+ /* four angles */
+ dma_addr_t sms_rot_phy[4][4];
+
+ /* V4L2 control structure for different control id */
+
+ int bpp; /* bytes per pixel */
+ int vrfb_bpp; /* bytes per pixel with respect to VRFB */
+
+ struct vid_vrfb_dma vrfb_dma_tx;
+ unsigned int smsshado_phy_addr[4];
+ unsigned int smsshado_virt_addr[4];
+ unsigned int vrfb_context[4];
+ unsigned int smsshado_size;
+ unsigned char pos;
+
+ int ps, vr_ps, line_length, first_int, field_id;
+ enum v4l2_memory memory;
+ struct videobuf_buffer *curFrm, *nextFrm;
+ struct list_head dma_queue;
+ u8 *queued_buf_addr[32];
+ u32 cropped_offset;
+ s32 tv_field1_offset;
+
+};
+
+/* per-filehandle data structure */
+struct omap_vout_fh {
+ struct omap_vout_device *vout;
+ enum v4l2_buf_type type;
+ struct videobuf_queue vbq;
+ int io_allowed;
+};
+
+#endif /* ifndef OMAP_VOUTDEF_H */
diff --git a/drivers/media/video/omap/omap_voutlib.c b/drivers/media/video/omap/omap_voutlib.c
new file mode 100644
index 0000000..c51a413
--- /dev/null
+++ b/drivers/media/video/omap/omap_voutlib.c
@@ -0,0 +1,281 @@
+/*
+ * drivers/media/video/omap/omap_voutlib.c
+ *
+ * Copyright (C) 2008 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.
+ *
+ * Based on 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) 2004 Texas Instruments.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/videodev2.h>
+#include <linux/semaphore.h>
+
+/* Return the default overlay cropping rectangle in crop given the image
+ * size in pix and the video display size in fbuf. The default
+ * cropping rectangle is the largest rectangle no larger than the capture size
+ * that will fit on the display. The default cropping rectangle is centered in
+ * the image. All dimensions and offsets are rounded down to even numbers.
+ */
+void omap_vout_default_crop(struct v4l2_pix_format *pix,
+ struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop)
+{
+ crop->width = (pix->width < fbuf->fmt.width) ?
+ pix->width : fbuf->fmt.width;
+ crop->height = (pix->height < fbuf->fmt.height) ?
+ pix->height : fbuf->fmt.height;
+ crop->width &= ~1;
+ crop->height &= ~1;
+ crop->left = ((pix->width - crop->width) >> 1) & ~1;
+ crop->top = ((pix->height - crop->height) >> 1) & ~1;
+}
+EXPORT_SYMBOL_GPL(omap_vout_default_crop);
+/* Given a new render window in new_win, adjust the window to the
+ * nearest supported configuration. The adjusted window parameters are
+ * returned in new_win.
+ * Returns zero if succesful, or -EINVAL if the requested window is
+ * impossible and cannot reasonably be adjusted.
+ */
+int omap_vout_try_window(struct v4l2_framebuffer *fbuf,
+ struct v4l2_window *new_win)
+{
+ struct v4l2_rect try_win;
+
+ /* make a working copy of the new_win rectangle */
+ try_win = new_win->w;
+
+ /* adjust the preview window so it fits on the display by clipping any
+ * offscreen areas
+ */
+ if (try_win.left < 0) {
+ try_win.width += try_win.left;
+ try_win.left = 0;
+ }
+ if (try_win.top < 0) {
+ try_win.height += try_win.top;
+ try_win.top = 0;
+ }
+ try_win.width = (try_win.width < fbuf->fmt.width) ?
+ try_win.width : fbuf->fmt.width;
+ try_win.height = (try_win.height < fbuf->fmt.height) ?
+ try_win.height : fbuf->fmt.height;
+ if (try_win.left + try_win.width > fbuf->fmt.width)
+ try_win.width = fbuf->fmt.width - try_win.left;
+ if (try_win.top + try_win.height > fbuf->fmt.height)
+ try_win.height = fbuf->fmt.height - try_win.top;
+ try_win.width &= ~1;
+ try_win.height &= ~1;
+
+ if (try_win.width <= 0 || try_win.height <= 0)
+ return -EINVAL;
+
+ /* We now have a valid preview window, so go with it */
+ new_win->w = try_win;
+ new_win->field = /*V4L2_FIELD_NONE*/V4L2_FIELD_ANY;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(omap_vout_try_window);
+
+/* Given a new render window in new_win, adjust the window to the
+ * nearest supported configuration. The image cropping window in crop
+ * will also be adjusted if necessary. Preference is given to keeping the
+ * the window as close to the requested configuration as possible. If
+ * successful, new_win, vout->win, and crop are updated.
+ * Returns zero if succesful, or -EINVAL if the requested preview window is
+ * impossible and cannot reasonably be adjusted.
+ */
+int omap_vout_new_window(struct v4l2_rect *crop,
+ struct v4l2_window *win, struct v4l2_framebuffer *fbuf,
+ struct v4l2_window *new_win)
+{
+ int err;
+
+ err = omap_vout_try_window(fbuf, new_win);
+ if (err)
+ return err;
+
+ /* update our preview window */
+ win->w = new_win->w;
+ win->field = new_win->field;
+ win->chromakey = new_win->chromakey;
+
+ /* adjust the cropping window to allow for resizing limitations */
+ if ((crop->height/win->w.height) >= 2) {
+ /* The maximum vertical downsizing ratio is 2:1 */
+ crop->height = win->w.height * 2;
+ }
+ if ((crop->width/win->w.width) >= 2) {
+ /* The maximum horizontal downsizing ratio is 2:1 */
+ crop->width = win->w.width * 2;
+ }
+ if (crop->width > 768) {
+ /* The OMAP2420 vertical resizing line buffer is 768 pixels
+ * wide. If the cropped image is wider than 768 pixels then it
+ * cannot be vertically resized.
+ */
+ if (crop->height != win->w.height)
+ crop->width = 768;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(omap_vout_new_window);
+
+/* Given a new cropping rectangle in new_crop, adjust the cropping rectangle to
+ * the nearest supported configuration. The image render window in win will
+ * also be adjusted if necessary. The preview window is adjusted such that the
+ * horizontal and vertical rescaling ratios stay constant. If the render
+ * window would fall outside the display boundaries, the cropping rectangle
+ * will also be adjusted to maintain the rescaling ratios. If successful, crop
+ * and win are updated.
+ * Returns zero if succesful, or -EINVAL if the requested cropping rectangle is
+ * impossible and cannot reasonably be adjusted.
+ */
+int omap_vout_new_crop(struct v4l2_pix_format *pix,
+ struct v4l2_rect *crop, struct v4l2_window *win,
+ struct v4l2_framebuffer *fbuf, const struct v4l2_rect *new_crop)
+{
+ struct v4l2_rect try_crop;
+ unsigned long vresize, hresize;
+
+ /* make a working copy of the new_crop rectangle */
+ try_crop = *new_crop;
+
+ /* adjust the cropping rectangle so it fits in the image */
+ if (try_crop.left < 0) {
+ try_crop.width += try_crop.left;
+ try_crop.left = 0;
+ }
+ if (try_crop.top < 0) {
+ try_crop.height += try_crop.top;
+ try_crop.top = 0;
+ }
+ try_crop.width = (try_crop.width < pix->width) ?
+ try_crop.width : pix->width;
+ try_crop.height = (try_crop.height < pix->height) ?
+ try_crop.height : pix->height;
+ if (try_crop.left + try_crop.width > pix->width)
+ try_crop.width = pix->width - try_crop.left;
+ if (try_crop.top + try_crop.height > pix->height)
+ try_crop.height = pix->height - try_crop.top;
+ try_crop.width &= ~1;
+ try_crop.height &= ~1;
+ if (try_crop.width <= 0 || try_crop.height <= 0)
+ return -EINVAL;
+
+ if (crop->height != win->w.height) {
+ /* If we're resizing vertically, we can't support a crop width
+ * wider than 768 pixels.
+ */
+ if (try_crop.width > 768)
+ try_crop.width = 768;
+ }
+ /* vertical resizing */
+ vresize = (1024 * crop->height) / win->w.height;
+ if (vresize > 2048)
+ vresize = 2048;
+ else if (vresize == 0)
+ vresize = 1;
+ win->w.height = ((1024 * try_crop.height) / vresize) & ~1;
+ if (win->w.height == 0)
+ win->w.height = 2;
+ if (win->w.height + win->w.top > fbuf->fmt.height) {
+ /* We made the preview window extend below the bottom of the
+ * display, so clip it to the display boundary and resize the
+ * cropping height to maintain the vertical resizing ratio.
+ */
+ win->w.height = (fbuf->fmt.height - win->w.top) & ~1;
+ if (try_crop.height == 0)
+ try_crop.height = 2;
+ }
+ /* horizontal resizing */
+ hresize = (1024 * crop->width) / win->w.width;
+ if (hresize > 2048)
+ hresize = 2048;
+ else if (hresize == 0)
+ hresize = 1;
+ win->w.width = ((1024 * try_crop.width) / hresize) & ~1;
+ if (win->w.width == 0)
+ win->w.width = 2;
+ if (win->w.width + win->w.left > fbuf->fmt.width) {
+ /* We made the preview window extend past the right side of the
+ * display, so clip it to the display boundary and resize the
+ * cropping width to maintain the horizontal resizing ratio.
+ */
+ win->w.width = (fbuf->fmt.width - win->w.left) & ~1;
+ if (try_crop.width == 0)
+ try_crop.width = 2;
+ }
+
+ /* Check for resizing constraints */
+ if ((try_crop.height/win->w.height) >= 2) {
+ /* The maximum vertical downsizing ratio is 2:1 */
+ try_crop.height = win->w.height * 2;
+ }
+ if ((try_crop.width/win->w.width) >= 2) {
+ /* The maximum horizontal downsizing ratio is 2:1 */
+ try_crop.width = win->w.width * 2;
+ }
+ if (try_crop.width > 768) {
+ /* The OMAP2420 vertical resizing line buffer is 768 pixels
+ * wide. If the cropped image is wider than 768 pixels then it
+ * cannot be vertically resized.
+ */
+ if (try_crop.height != win->w.height)
+ try_crop.width = 768;
+ }
+
+ /* update our cropping rectangle and we're done */
+ *crop = try_crop;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(omap_vout_new_crop);
+
+/* Given a new format in pix and fbuf, crop and win
+ * structures are initialized to default values. crop
+ * is initialized to the largest window size that will fit on the display. The
+ * crop window is centered in the image. win is initialized to
+ * the same size as crop and is centered on the display.
+ * All sizes and offsets are constrained to be even numbers.
+ */
+void omap_vout_new_format(struct v4l2_pix_format *pix,
+ struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop,
+ struct v4l2_window *win)
+{
+ /* crop defines the preview source window in the image capture
+ * buffer
+ */
+ omap_vout_default_crop(pix, fbuf, crop);
+
+ /* win defines the preview target window on the display */
+ win->w.width = crop->width;
+ win->w.height = crop->height;
+ win->w.left = ((fbuf->fmt.width - win->w.width) >> 1) & ~1;
+ win->w.top = ((fbuf->fmt.height - win->w.height) >> 1) & ~1;
+}
+EXPORT_SYMBOL_GPL(omap_vout_new_format);
+
+MODULE_AUTHOR("Texas Instruments.");
+MODULE_DESCRIPTION("OMAP Video library");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/omap/omap_voutlib.h b/drivers/media/video/omap/omap_voutlib.h
new file mode 100644
index 0000000..d98f659
--- /dev/null
+++ b/drivers/media/video/omap/omap_voutlib.h
@@ -0,0 +1,34 @@
+/*
+ * drivers/media/video/omap/omap_voutlib.h
+ *
+ * Copyright (C) 2008 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.
+ *
+ */
+
+#ifndef OMAP_VOUTLIB_H
+#define OMAP_VOUTLIB_H
+
+extern void omap_vout_default_crop(struct v4l2_pix_format *pix,
+ struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop);
+
+extern int omap_vout_new_crop(struct v4l2_pix_format *pix,
+ struct v4l2_rect *crop, struct v4l2_window *win,
+ struct v4l2_framebuffer *fbuf,
+ const struct v4l2_rect *new_crop);
+
+extern int omap_vout_try_window(struct v4l2_framebuffer *fbuf,
+ struct v4l2_window *new_win);
+
+extern int omap_vout_new_window(struct v4l2_rect *crop,
+ struct v4l2_window *win, struct v4l2_framebuffer *fbuf,
+ struct v4l2_window *new_win);
+
+extern void omap_vout_new_format(struct v4l2_pix_format *pix,
+ struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop,
+ struct v4l2_window *win);
+#endif /* #ifndef OMAP_LIB_H */
+
--
1.5.6
--
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