- 根目录:
- drivers
- media
- platform
- vino.c
/*
* Driver for the VINO (Video In No Out) system found in SGI Indys.
*
* This file is subject to the terms and conditions of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
*
* Based on the previous version of the driver for 2.4 kernels by:
* Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
*
* v4l2_device/v4l2_subdev conversion by:
* Copyright (C) 2009 Hans Verkuil <hverkuil@xs4all.nl>
*
* Note: this conversion is untested! Please contact the linux-media
* mailinglist if you can test this, together with the test results.
*/
/*
* TODO:
* - remove "mark pages reserved-hacks" from memory allocation code
* and implement fault()
* - check decimation, calculating and reporting image size when
* using decimation
* - implement read(), user mode buffers and overlay (?)
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/time.h>
#include <linux/kmod.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <linux/mutex.h>
#include <asm/paccess.h>
#include <asm/io.h>
#include <asm/sgi/ip22.h>
#include <asm/sgi/mc.h>
#include "vino.h"
#include "saa7191.h"
#include "indycam.h"
/* Uncomment the following line to get lots and lots of (mostly useless)
* debug info.
* Note that the debug output also slows down the driver significantly */
// #define VINO_DEBUG
// #define VINO_DEBUG_INT
#define VINO_MODULE_VERSION "0.0.7"
MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
MODULE_VERSION(VINO_MODULE_VERSION);
MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
MODULE_LICENSE("GPL");
#ifdef VINO_DEBUG
#define dprintk(x...) printk("VINO: " x);
#else
#define dprintk(x...)
#endif
#define VINO_NO_CHANNEL 0
#define VINO_CHANNEL_A 1
#define VINO_CHANNEL_B 2
#define VINO_PAL_WIDTH 768
#define VINO_PAL_HEIGHT 576
#define VINO_NTSC_WIDTH 640
#define VINO_NTSC_HEIGHT 480
#define VINO_MIN_WIDTH 32
#define VINO_MIN_HEIGHT 32
#define VINO_CLIPPING_START_ODD_D1 1
#define VINO_CLIPPING_START_ODD_PAL 15
#define VINO_CLIPPING_START_ODD_NTSC 12
#define VINO_CLIPPING_START_EVEN_D1 2
#define VINO_CLIPPING_START_EVEN_PAL 15
#define VINO_CLIPPING_START_EVEN_NTSC 12
#define VINO_INPUT_CHANNEL_COUNT 3
/* the number is the index for vino_inputs */
#define VINO_INPUT_NONE -1
#define VINO_INPUT_COMPOSITE 0
#define VINO_INPUT_SVIDEO 1
#define VINO_INPUT_D1 2
#define VINO_PAGE_RATIO (PAGE_SIZE / VINO_PAGE_SIZE)
#define VINO_FIFO_THRESHOLD_DEFAULT 16
#define VINO_FRAMEBUFFER_SIZE ((VINO_PAL_WIDTH \
* VINO_PAL_HEIGHT * 4 \
+ 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
#define VINO_FRAMEBUFFER_COUNT_MAX 8
#define VINO_FRAMEBUFFER_UNUSED 0
#define VINO_FRAMEBUFFER_IN_USE 1
#define VINO_FRAMEBUFFER_READY 2
#define VINO_QUEUE_ERROR -1
#define VINO_QUEUE_MAGIC 0x20050125
#define VINO_MEMORY_NONE 0
#define VINO_MEMORY_MMAP 1
#define VINO_MEMORY_USERPTR 2
#define VINO_DUMMY_DESC_COUNT 4
#define VINO_DESC_FETCH_DELAY 5 /* microseconds */
#define VINO_MAX_FRAME_SKIP_COUNT 128
/* the number is the index for vino_data_formats */
#define VINO_DATA_FMT_NONE -1
#define VINO_DATA_FMT_GREY 0
#define VINO_DATA_FMT_RGB332 1
#define VINO_DATA_FMT_RGB32 2
#define VINO_DATA_FMT_YUV 3
#define VINO_DATA_FMT_COUNT 4
/* the number is the index for vino_data_norms */
#define VINO_DATA_NORM_NONE -1
#define VINO_DATA_NORM_NTSC 0
#define VINO_DATA_NORM_PAL 1
#define VINO_DATA_NORM_SECAM 2
#define VINO_DATA_NORM_D1 3
#define VINO_DATA_NORM_COUNT 4
/* I2C controller flags */
#define SGI_I2C_FORCE_IDLE (0 << 0)
#define SGI_I2C_NOT_IDLE (1 << 0)
#define SGI_I2C_WRITE (0 << 1)
#define SGI_I2C_READ (1 << 1)
#define SGI_I2C_RELEASE_BUS (0 << 2)
#define SGI_I2C_HOLD_BUS (1 << 2)
#define SGI_I2C_XFER_DONE (0 << 4)
#define SGI_I2C_XFER_BUSY (1 << 4)
#define SGI_I2C_ACK (0 << 5)
#define SGI_I2C_NACK (1 << 5)
#define SGI_I2C_BUS_OK (0 << 7)
#define SGI_I2C_BUS_ERR (1 << 7)
/* Internal data structure definitions */
struct vino_input {
char *name;
v4l2_std_id std;
};
struct vino_clipping {
unsigned int left, right, top, bottom;
};
struct vino_data_format {
/* the description */
char *description;
/* bytes per pixel */
unsigned int bpp;
/* V4L2 fourcc code */
__u32 pixelformat;
/* V4L2 colorspace (duh!) */
enum v4l2_colorspace colorspace;
};
struct vino_data_norm {
char *description;
unsigned int width, height;
struct vino_clipping odd;
struct vino_clipping even;
v4l2_std_id std;
unsigned int fps_min, fps_max;
__u32 framelines;
};
struct vino_descriptor_table {
/* the number of PAGE_SIZE sized pages in the buffer */
unsigned int page_count;
/* virtual (kmalloc'd) pointers to the actual data
* (in PAGE_SIZE chunks, used with mmap streaming) */
unsigned long *virtual;
/* cpu address for the VINO descriptor table
* (contains DMA addresses, VINO_PAGE_SIZE chunks) */
unsigned long *dma_cpu;
/* dma address for the VINO descriptor table
* (contains DMA addresses, VINO_PAGE_SIZE chunks) */
dma_addr_t dma;
};
struct vino_framebuffer {
/* identifier nubmer */
unsigned int id;
/* the length of the whole buffer */
unsigned int size;
/* the length of actual data in buffer */
unsigned int data_size;
/* the data format */
unsigned int data_format;
/* the state of buffer data */
unsigned int state;
/* is the buffer mapped in user space? */
unsigned int map_count;
/* memory offset for mmap() */
unsigned int offset;
/* frame counter */
unsigned int frame_counter;
/* timestamp (written when image capture finishes) */
struct timeval timestamp;
struct vino_descriptor_table desc_table;
spinlock_t state_lock;
};
struct vino_framebuffer_fifo {
unsigned int length;
unsigned int used;
unsigned int head;
unsigned int tail;
unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
};
struct vino_framebuffer_queue {
unsigned int magic;
/* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
unsigned int type;
unsigned int length;
/* data field of in and out contain index numbers for buffer */
struct vino_framebuffer_fifo in;
struct vino_framebuffer_fifo out;
struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
spinlock_t queue_lock;
struct mutex queue_mutex;
wait_queue_head_t frame_wait_queue;
};
struct vino_interrupt_data {
struct timeval timestamp;
unsigned int frame_counter;
unsigned int skip_count;
unsigned int skip;
};
struct vino_channel_settings {
unsigned int channel;
int input;
unsigned int data_format;
unsigned int data_norm;
struct vino_clipping clipping;
unsigned int decimation;
unsigned int line_size;
unsigned int alpha;
unsigned int fps;
unsigned int framert_reg;
unsigned int fifo_threshold;
struct vino_framebuffer_queue fb_queue;
/* number of the current field */
unsigned int field;
/* read in progress */
int reading;
/* streaming is active */
int streaming;
/* the driver is currently processing the queue */
int capturing;
struct mutex mutex;
spinlock_t capture_lock;
unsigned int users;
struct vino_interrupt_data int_data;
/* V4L support */
struct video_device *vdev;
};
struct vino_settings {
struct v4l2_device v4l2_dev;
struct vino_channel_settings a;
struct vino_channel_settings b;
/* the channel which owns this client:
* VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
unsigned int decoder_owner;
struct v4l2_subdev *decoder;
unsigned int camera_owner;
struct v4l2_subdev *camera;
/* a lock for vino register access */
spinlock_t vino_lock;
/* a lock for channel input changes */
spinlock_t input_lock;
unsigned long dummy_page;
struct vino_descriptor_table dummy_desc_table;
};
/* Module parameters */
/*
* Using vino_pixel_conversion the ABGR32-format pixels supplied
* by the VINO chip can be converted to more common formats
* like RGBA32 (or probably RGB24 in the future). This way we
* can give out data that can be specified correctly with
* the V4L2-definitions.
*
* The pixel format is specified as RGBA32 when no conversion
* is used.
*
* Note that this only affects the 32-bit bit depth.
*
* Use non-zero value to enable conversion.
*/
static int vino_pixel_conversion;
module_param_named(pixelconv, vino_pixel_conversion, int, 0);
MODULE_PARM_DESC(pixelconv,
"enable pixel conversion (non-zero value enables)");
/* Internal data structures */
static struct sgi_vino *vino;
static struct vino_settings *vino_drvdata;
#define camera_call(o, f, args...) \
v4l2_subdev_call(vino_drvdata->camera, o, f, ##args)
#define decoder_call(o, f, args...) \
v4l2_subdev_call(vino_drvdata->decoder, o, f, ##args)
static const char *vino_driver_name = "vino";
static const char *vino_driver_description = "SGI VINO";
static const char *vino_bus_name = "GIO64 bus";
static const char *vino_vdev_name_a = "SGI VINO Channel A";
static const char *vino_vdev_name_b = "SGI VINO Channel B";
static void vino_capture_tasklet(unsigned long channel);
DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
static const struct vino_input vino_inputs[] = {
{
.name = "Composite",
.std = V4L2_STD_NTSC | V4L2_STD_PAL
| V4L2_STD_SECAM,
}, {
.name = "S-Video",
.std = V4L2_STD_NTSC | V4L2_STD_PAL
| V4L2_STD_SECAM,
}, {
.name = "D1/IndyCam",
.std = V4L2_STD_NTSC,
}
};
static const struct vino_data_format vino_data_formats[] = {
{
.description = "8-bit greyscale",
.bpp = 1,
.pixelformat = V4L2_PIX_FMT_GREY,
.colorspace = V4L2_COLORSPACE_SMPTE170M,
}, {
.description = "8-bit dithered RGB 3-3-2",
.bpp = 1,
.pixelformat = V4L2_PIX_FMT_RGB332,
.colorspace = V4L2_COLORSPACE_SRGB,
}, {
.description = "32-bit RGB",
.bpp = 4,
.pixelformat = V4L2_PIX_FMT_RGB32,
.colorspace = V4L2_COLORSPACE_SRGB,
}, {
.description = "YUV 4:2:2",
.bpp = 2,
.pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
.colorspace = V4L2_COLORSPACE_SMPTE170M,
}
};
static const struct vino_data_norm vino_data_norms[] = {
{
.description = "NTSC",
.std = V4L2_STD_NTSC,
.fps_min = 6,
.fps_max = 30,
.framelines = 525,
.width = VINO_NTSC_WIDTH,
.height = VINO_NTSC_HEIGHT,
.odd = {
.top = VINO_CLIPPING_START_ODD_NTSC,
.left = 0,
.bottom = VINO_CLIPPING_START_ODD_NTSC
+ VINO_NTSC_HEIGHT / 2 - 1,
.right = VINO_NTSC_WIDTH,
},
.even = {
.top = VINO_CLIPPING_START_EVEN_NTSC,
.left = 0,
.bottom = VINO_CLIPPING_START_EVEN_NTSC
+ VINO_NTSC_HEIGHT / 2 - 1,
.right = VINO_NTSC_WIDTH,
},
}, {
.description = "PAL",
.std = V4L2_STD_PAL,
.fps_min = 5,
.fps_max = 25,
.framelines = 625,
.width = VINO_PAL_WIDTH,
.height = VINO_PAL_HEIGHT,
.odd = {
.top = VINO_CLIPPING_START_ODD_PAL,
.left = 0,
.bottom = VINO_CLIPPING_START_ODD_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
.right = VINO_PAL_WIDTH,
},
.even = {
.top = VINO_CLIPPING_START_EVEN_PAL,
.left = 0,
.bottom = VINO_CLIPPING_START_EVEN_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
.right = VINO_PAL_WIDTH,
},
}, {
.description = "SECAM",
.std = V4L2_STD_SECAM,
.fps_min = 5,
.fps_max = 25,
.framelines = 625,
.width = VINO_PAL_WIDTH,
.height = VINO_PAL_HEIGHT,
.odd = {
.top = VINO_CLIPPING_START_ODD_PAL,
.left = 0,
.bottom = VINO_CLIPPING_START_ODD_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
.right = VINO_PAL_WIDTH,
},
.even = {
.top = VINO_CLIPPING_START_EVEN_PAL,
.left = 0,
.bottom = VINO_CLIPPING_START_EVEN_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
.right = VINO_PAL_WIDTH,
},
}, {
.description = "NTSC/D1",
.std = V4L2_STD_NTSC,
.fps_min = 6,
.fps_max = 30,
.framelines = 525,
.width = VINO_NTSC_WIDTH,
.height = VINO_NTSC_HEIGHT,
.odd = {
.top = VINO_CLIPPING_START_ODD_D1,
.left = 0,
.bottom = VINO_CLIPPING_START_ODD_D1
+ VINO_NTSC_HEIGHT / 2 - 1,
.right = VINO_NTSC_WIDTH,
},
.even = {
.top = VINO_CLIPPING_START_EVEN_D1,
.left = 0,
.bottom = VINO_CLIPPING_START_EVEN_D1
+ VINO_NTSC_HEIGHT / 2 - 1,
.right = VINO_NTSC_WIDTH,
},
}
};
#define VINO_INDYCAM_V4L2_CONTROL_COUNT 9
struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Automatic Gain Control",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = INDYCAM_AGC_DEFAULT,
}, {
.id = V4L2_CID_AUTO_WHITE_BALANCE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Automatic White Balance",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = INDYCAM_AWB_DEFAULT,
}, {
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = INDYCAM_GAIN_MIN,
.maximum = INDYCAM_GAIN_MAX,
.step = 1,
.default_value = INDYCAM_GAIN_DEFAULT,
}, {
.id = INDYCAM_CONTROL_RED_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Red Saturation",
.minimum = INDYCAM_RED_SATURATION_MIN,
.maximum = INDYCAM_RED_SATURATION_MAX,
.step = 1,
.default_value = INDYCAM_RED_SATURATION_DEFAULT,
}, {
.id = INDYCAM_CONTROL_BLUE_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Blue Saturation",
.minimum = INDYCAM_BLUE_SATURATION_MIN,
.maximum = INDYCAM_BLUE_SATURATION_MAX,
.step = 1,
.default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
}, {
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Red Balance",
.minimum = INDYCAM_RED_BALANCE_MIN,
.maximum = INDYCAM_RED_BALANCE_MAX,
.step = 1,
.default_value = INDYCAM_RED_BALANCE_DEFAULT,
}, {
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Blue Balance",
.minimum = INDYCAM_BLUE_BALANCE_MIN,
.maximum = INDYCAM_BLUE_BALANCE_MAX,
.step = 1,
.default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
}, {
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Shutter Control",
.minimum = INDYCAM_SHUTTER_MIN,
.maximum = INDYCAM_SHUTTER_MAX,
.step = 1,
.default_value = INDYCAM_SHUTTER_DEFAULT,
}, {
.id = V4L2_CID_GAMMA,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gamma",
.minimum = INDYCAM_GAMMA_MIN,
.maximum = INDYCAM_GAMMA_MAX,
.step = 1,
.default_value = INDYCAM_GAMMA_DEFAULT,
}
};
#define VINO_SAA7191_V4L2_CONTROL_COUNT 9
struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
{
.id = V4L2_CID_HUE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Hue",
.minimum = SAA7191_HUE_MIN,
.maximum = SAA7191_HUE_MAX,
.step = 1,
.default_value = SAA7191_HUE_DEFAULT,
}, {
.id = SAA7191_CONTROL_BANDPASS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Luminance Bandpass",
.minimum = SAA7191_BANDPASS_MIN,
.maximum = SAA7191_BANDPASS_MAX,
.step = 1,
.default_value = SAA7191_BANDPASS_DEFAULT,
}, {
.id = SAA7191_CONTROL_BANDPASS_WEIGHT,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Luminance Bandpass Weight",
.minimum = SAA7191_BANDPASS_WEIGHT_MIN,
.maximum = SAA7191_BANDPASS_WEIGHT_MAX,
.step = 1,
.default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
}, {
.id = SAA7191_CONTROL_CORING,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "HF Luminance Coring",
.minimum = SAA7191_CORING_MIN,
.maximum = SAA7191_CORING_MAX,
.step = 1,
.default_value = SAA7191_CORING_DEFAULT,
}, {
.id = SAA7191_CONTROL_FORCE_COLOUR,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Force Colour",
.minimum = SAA7191_FORCE_COLOUR_MIN,
.maximum = SAA7191_FORCE_COLOUR_MAX,
.step = 1,
.default_value = SAA7191_FORCE_COLOUR_DEFAULT,
}, {
.id = SAA7191_CONTROL_CHROMA_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Chrominance Gain Control",
.minimum = SAA7191_CHROMA_GAIN_MIN,
.maximum = SAA7191_CHROMA_GAIN_MAX,
.step = 1,
.default_value = SAA7191_CHROMA_GAIN_DEFAULT,
}, {
.id = SAA7191_CONTROL_VTRC,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "VTR Time Constant",
.minimum = SAA7191_VTRC_MIN,
.maximum = SAA7191_VTRC_MAX,
.step = 1,
.default_value = SAA7191_VTRC_DEFAULT,
}, {
.id = SAA7191_CONTROL_LUMA_DELAY,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Luminance Delay Compensation",
.minimum = SAA7191_LUMA_DELAY_MIN,
.maximum = SAA7191_LUMA_DELAY_MAX,
.step = 1,
.default_value = SAA7191_LUMA_DELAY_DEFAULT,
}, {
.id = SAA7191_CONTROL_VNR,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Vertical Noise Reduction",
.minimum = SAA7191_VNR_MIN,
.maximum = SAA7191_VNR_MAX,
.step = 1,
.default_value = SAA7191_VNR_DEFAULT,
}
};
/* VINO framebuffer/DMA descriptor management */
static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
unsigned int count)
{
unsigned int i;
dprintk("vino_free_buffer_with_count(): count = %d\n", count);
for (i = 0; i < count; i++) {
ClearPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
dma_unmap_single(NULL,
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
PAGE_SIZE, DMA_FROM_DEVICE);
free_page(fb->desc_table.virtual[i]);
}
dma_free_coherent(NULL,
VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
fb->desc_table.dma);
kfree(fb->desc_table.virtual);
memset(fb, 0, sizeof(struct vino_framebuffer));
}
static void vino_free_buffer(struct vino_framebuffer *fb)
{
vino_free_buffer_with_count(fb, fb->desc_table.page_count);
}
static int vino_allocate_buffer(struct vino_framebuffer *fb,
unsigned int size)
{
unsigned int count, i, j;
int ret = 0;
dprintk("vino_allocate_buffer():\n");
if (size < 1)
return -EINVAL;
memset(fb, 0, sizeof(struct vino_framebuffer));
count = ((size / PAGE_SIZE) + 4) & ~3;
dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
size, count);
/* allocate memory for table with virtual (page) addresses */
fb->desc_table.virtual =
kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
if (!fb->desc_table.virtual)
return -ENOMEM;
/* allocate memory for table with dma addresses
* (has space for four extra descriptors) */
fb->desc_table.dma_cpu =
dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
sizeof(dma_addr_t), &fb->desc_table.dma,
GFP_KERNEL | GFP_DMA);
if (!fb->desc_table.dma_cpu) {
ret = -ENOMEM;
goto out_free_virtual;
}
/* allocate pages for the buffer and acquire the according
* dma addresses */
for (i = 0; i < count; i++) {
dma_addr_t dma_data_addr;
fb->desc_table.virtual[i] =
get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!fb->desc_table.virtual[i]) {
ret = -ENOBUFS;
break;
}
dma_data_addr =
dma_map_single(NULL,
(void *)fb->desc_table.virtual[i],
PAGE_SIZE, DMA_FROM_DEVICE);
for (j = 0; j < VINO_PAGE_RATIO; j++) {
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
dma_data_addr + VINO_PAGE_SIZE * j;
}
SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
}
/* page_count needs to be set anyway, because the descriptor table has
* been allocated according to this number */
fb->desc_table.page_count = count;
if (ret) {
/* the descriptor with index i doesn't contain
* a valid address yet */
vino_free_buffer_with_count(fb, i);
return ret;
}
//fb->size = size;
fb->size = count * PAGE_SIZE;
fb->data_format = VINO_DATA_FMT_NONE;
/* set the dma stop-bit for the last (count+1)th descriptor */
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
return 0;
out_free_virtual:
kfree(fb->desc_table.virtual);
return ret;
}
#if 0
/* user buffers not fully implemented yet */
static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
void *user,
unsigned int size)
{
unsigned int count, i, j;
int ret = 0;
dprintk("vino_prepare_user_buffer():\n");
if (size < 1)
return -EINVAL;
memset(fb, 0, sizeof(struct vino_framebuffer));
count = ((size / PAGE_SIZE)) & ~3;
dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
size, count);
/* allocate memory for table with virtual (page) addresses */
fb->desc_table.virtual = (unsigned long *)
kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
if (!fb->desc_table.virtual)
return -ENOMEM;
/* allocate memory for table with dma addresses
* (has space for four extra descriptors) */
fb->desc_table.dma_cpu =
dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
sizeof(dma_addr_t), &fb->desc_table.dma,
GFP_KERNEL | GFP_DMA);
if (!fb->desc_table.dma_cpu) {
ret = -ENOMEM;
goto out_free_virtual;
}
/* allocate pages for the buffer and acquire the according
* dma addresses */
for (i = 0; i < count; i++) {
dma_addr_t dma_data_addr;
fb->desc_table.virtual[i] =
get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!fb->desc_table.virtual[i]) {
ret = -ENOBUFS;
break;
}
dma_data_addr =
dma_map_single(NULL,
(void *)fb->desc_table.virtual[i],
PAGE_SIZE, DMA_FROM_DEVICE);
for (j = 0; j < VINO_PAGE_RATIO; j++) {
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
dma_data_addr + VINO_PAGE_SIZE * j;
}
SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
}
/* page_count needs to be set anyway, because the descriptor table has
* been allocated according to this number */
fb->desc_table.page_count = count;
if (ret) {
/* the descriptor with index i doesn't contain
* a valid address yet */
vino_free_buffer_with_count(fb, i);
return ret;
}
//fb->size = size;
fb->size = count * PAGE_SIZE;
/* set the dma stop-bit for the last (count+1)th descriptor */
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
return 0;
out_free_virtual:
kfree(fb->desc_table.virtual);
return ret;
}
#endif
static void vino_sync_buffer(struct vino_framebuffer *fb)
{
int i;
dprintk("vino_sync_buffer():\n");
for (i = 0; i < fb->desc_table.page_count; i++)
dma_sync_single_for_cpu(NULL,
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
PAGE_SIZE, DMA_FROM_DEVICE);
}
/* Framebuffer fifo functions (need to be locked externally) */
static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
unsigned int length)
{
f->length = 0;
f->used = 0;
f->head = 0;
f->tail = 0;
if (length > VINO_FRAMEBUFFER_COUNT_MAX)
length = VINO_FRAMEBUFFER_COUNT_MAX;
f->length = length;
}
/* returns true/false */
static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
unsigned int id)
{
unsigned int i;
for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
if (f->data[i] == id)
return 1;
}
return 0;
}
#if 0
/* returns true/false */
static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
{
return (f->used == f->length);
}
#endif
static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
{
return f->used;
}
static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
{
if (id >= f->length) {
return VINO_QUEUE_ERROR;
}
if (vino_fifo_has_id(f, id)) {
return VINO_QUEUE_ERROR;
}
if (f->used < f->length) {
f->data[f->tail] = id;
f->tail = (f->tail + 1) % f->length;
f->used++;
} else {
return VINO_QUEUE_ERROR;
}
return 0;
}
static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
{
if (f->used > 0) {
*id = f->data[f->head];
} else {
return VINO_QUEUE_ERROR;
}
return 0;
}
static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
{
if (f->used > 0) {
*id = f->data[f->head];
f->head = (f->head + 1) % f->length;
f->used--;
} else {
return VINO_QUEUE_ERROR;
}
return 0;
}
/* Framebuffer queue functions */
/* execute with queue_lock locked */
static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
unsigned int length)
{
unsigned int i;
q->length = 0;
memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
for (i = 0; i < length; i++) {
dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
i);
vino_free_buffer(q->buffer[i]);
kfree(q->buffer[i]);
}
q->type = VINO_MEMORY_NONE;
q->magic = 0;
}
static void vino_queue_free(struct vino_framebuffer_queue *q)
{
dprintk("vino_queue_free():\n");
if (q->magic != VINO_QUEUE_MAGIC)
return;
if (q->type != VINO_MEMORY_MMAP)
return;
mutex_lock(&q->queue_mutex);
vino_queue_free_with_count(q, q->length);
mutex_unlock(&q->queue_mutex);
}
static int vino_queue_init(struct vino_framebuffer_queue *q,
unsigned int *length)
{
unsigned int i;
int ret = 0;
dprintk("vino_queue_init(): length = %d\n", *length);
if (q->magic == VINO_QUEUE_MAGIC) {
dprintk("vino_queue_init(): queue already initialized!\n");
return -EINVAL;
}
if (q->type != VINO_MEMORY_NONE) {
dprintk("vino_queue_init(): queue already initialized!\n");
return -EINVAL;
}
if (*length < 1)
return -EINVAL;
mutex_lock(&q->queue_mutex);
if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
*length = VINO_FRAMEBUFFER_COUNT_MAX;
q->length = 0;
for (i = 0; i < *length; i++) {
dprintk("vino_queue_init(): allocating buffer %d\n", i);
q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
GFP_KERNEL);
if (!q->buffer[i]) {
dprintk("vino_queue_init(): kmalloc() failed\n");
ret = -ENOMEM;
break;
}
ret = vino_allocate_buffer(q->buffer[i],
VINO_FRAMEBUFFER_SIZE);
if (ret) {
kfree(q->buffer[i]);
dprintk("vino_queue_init(): "
"vino_allocate_buffer() failed\n");
break;
}
q->buffer[i]->id = i;
if (i > 0) {
q->buffer[i]->offset = q->buffer[i - 1]->offset +
q->buffer[i - 1]->size;
} else {
q->buffer[i]->offset = 0;
}
spin_lock_init(&q->buffer[i]->state_lock);
dprintk("vino_queue_init(): buffer = %d, offset = %d, "
"size = %d\n", i, q->buffer[i]->offset,
q->buffer[i]->size);
}
if (ret) {
vino_queue_free_with_count(q, i);
*length = 0;
} else {
q->length = *length;
vino_fifo_init(&q->in, q->length);
vino_fifo_init(&q->out, q->length);
q->type = VINO_MEMORY_MMAP;
q->magic = VINO_QUEUE_MAGIC;
}
mutex_unlock(&q->queue_mutex);
return ret;
}
static struct vino_framebuffer *vino_queue_add(struct
vino_framebuffer_queue *q,
unsigned int id)
{
struct vino_framebuffer *ret = NULL;
unsigned int total;
unsigned long flags;
dprintk("vino_queue_add(): id = %d\n", id);
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
if (id >= q->length)
goto out;
/* not needed?: if (vino_fifo_full(&q->out)) {
goto out;
}*/
/* check that outgoing queue isn't already full
* (or that it won't become full) */
total = vino_fifo_get_used(&q->in) +
vino_fifo_get_used(&q->out);
if (total >= q->length)
goto out;
if (vino_fifo_enqueue(&q->in, id))
goto out;
ret = q->buffer[id];
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
static struct vino_framebuffer *vino_queue_transfer(struct
vino_framebuffer_queue *q)
{
struct vino_framebuffer *ret = NULL;
struct vino_framebuffer *fb;
int id;
unsigned long flags;
dprintk("vino_queue_transfer():\n");
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
// now this actually removes an entry from the incoming queue
if (vino_fifo_dequeue(&q->in, &id)) {
goto out;
}
dprintk("vino_queue_transfer(): id = %d\n", id);
fb = q->buffer[id];
// we have already checked that the outgoing queue is not full, but...
if (vino_fifo_enqueue(&q->out, id)) {
printk(KERN_ERR "vino_queue_transfer(): "
"outgoing queue is full, this shouldn't happen!\n");
goto out;
}
ret = fb;
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
/* returns true/false */
static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
unsigned int id)
{
int ret = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
ret = vino_fifo_has_id(&q->in, id);
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
/* returns true/false */
static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
unsigned int id)
{
int ret = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
ret = vino_fifo_has_id(&q->out, id);
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
unsigned int *used)
{
int ret = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return VINO_QUEUE_ERROR;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0) {
ret = VINO_QUEUE_ERROR;
goto out;
}
*used = vino_fifo_get_used(&q->in);
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
unsigned int *used)
{
int ret = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return VINO_QUEUE_ERROR;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0) {
ret = VINO_QUEUE_ERROR;
goto out;
}
*used = vino_fifo_get_used(&q->out);
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
#if 0
static int vino_queue_get_total(struct vino_framebuffer_queue *q,
unsigned int *total)
{
int ret = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return VINO_QUEUE_ERROR;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0) {
ret = VINO_QUEUE_ERROR;
goto out;
}
*total = vino_fifo_get_used(&q->in) +
vino_fifo_get_used(&q->out);
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
#endif
static struct vino_framebuffer *vino_queue_peek(struct
vino_framebuffer_queue *q,
unsigned int *id)
{
struct vino_framebuffer *ret = NULL;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
if (vino_fifo_peek(&q->in, id)) {
goto out;
}
ret = q->buffer[*id];
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
static struct vino_framebuffer *vino_queue_remove(struct
vino_framebuffer_queue *q,
unsigned int *id)
{
struct vino_framebuffer *ret = NULL;
unsigned long flags;
dprintk("vino_queue_remove():\n");
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
if (vino_fifo_dequeue(&q->out, id)) {
goto out;
}
dprintk("vino_queue_remove(): id = %d\n", *id);
ret = q->buffer[*id];
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
static struct
vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
unsigned int id)
{
struct vino_framebuffer *ret = NULL;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
if (q->length == 0)
goto out;
if (id >= q->length)
goto out;
ret = q->buffer[id];
out:
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
{
unsigned int length = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return length;
}
spin_lock_irqsave(&q->queue_lock, flags);
length = q->length;
spin_unlock_irqrestore(&q->queue_lock, flags);
return length;
}
static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
{
unsigned int i;
int ret = 0;
unsigned long flags;
if (q->magic != VINO_QUEUE_MAGIC) {
return ret;
}
spin_lock_irqsave(&q->queue_lock, flags);
for (i = 0; i < q->length; i++) {
if (q->buffer[i]->map_count > 0) {
ret = 1;
break;
}
}
spin_unlock_irqrestore(&q->queue_lock, flags);
return ret;
}
/* VINO functions */
/* execute with input_lock locked */
static void vino_update_line_size(struct vino_channel_settings *vcs)
{
unsigned int w = vcs->clipping.right - vcs->clipping.left;
unsigned int d = vcs->decimation;
unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
unsigned int lsize;
dprintk("update_line_size(): before: w = %d, d = %d, "
"line_size = %d\n", w, d, vcs->line_size);
/* line size must be multiple of 8 bytes */
lsize = (bpp * (w / d)) & ~7;
w = (lsize / bpp) * d;
vcs->clipping.right = vcs->clipping.left + w;
vcs->line_size = lsize;
dprintk("update_line_size(): after: w = %d, d = %d, "
"line_size = %d\n", w, d, vcs->line_size);
}
/* execute with input_lock locked */
static void vino_set_clipping(struct vino_channel_settings *vcs,
unsigned int x, unsigned int y,
unsigned int w, unsigned int h)
{
unsigned int maxwidth, maxheight;
unsigned int d;
maxwidth = vino_data_norms[vcs->data_norm].width;
maxheight = vino_data_norms[vcs->data_norm].height;
d = vcs->decimation;
y &= ~1; /* odd/even fields */
if (x > maxwidth) {
x = 0;
}
if (y > maxheight) {
y = 0;
}
if (((w / d) < VINO_MIN_WIDTH)
|| ((h / d) < VINO_MIN_HEIGHT)) {
w = VINO_MIN_WIDTH * d;
h = VINO_MIN_HEIGHT * d;
}
if ((x + w) > maxwidth) {
w = maxwidth - x;
if ((w / d) < VINO_MIN_WIDTH)
x = maxwidth - VINO_MIN_WIDTH * d;
}
if ((y + h) > maxheight) {
h = maxheight - y;
if ((h / d) < VINO_MIN_HEIGHT)
y = maxheight - VINO_MIN_HEIGHT * d;
}
vcs->clipping.left = x;
vcs->clipping.top = y;
vcs->clipping.right = x + w;
vcs->clipping.bottom = y + h;
vino_update_line_size(vcs);
dprintk("clipping %d, %d, %d, %d / %d - %d\n",
vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
vcs->clipping.bottom, vcs->decimation, vcs->line_size);
}
/* execute with input_lock locked */
static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
{
vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
vino_data_norms[vcs->data_norm].height);
}
/* execute with input_lock locked */
static void vino_set_scaling(struct vino_channel_settings *vcs,
unsigned int w, unsigned int h)
{
unsigned int x, y, curw, curh, d;
x = vcs->clipping.left;
y = vcs->clipping.top;
curw = vcs->clipping.right - vcs->clipping.left;
curh = vcs->clipping.bottom - vcs->clipping.top;
d = max(curw / w, curh / h);
dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
w, h, curw, curh, d);
if (d < 1) {
d = 1;
} else if (d > 8) {
d = 8;
}
vcs->decimation = d;
vino_set_clipping(vcs, x, y, w * d, h * d);
dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
vcs->decimation, vcs->line_size);
}
/* execute with input_lock locked */
static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
{
vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
vcs->clipping.bottom - vcs->clipping.top);
}
/* execute with input_lock locked */
static void vino_set_framerate(struct vino_channel_settings *vcs,
unsigned int fps)
{
unsigned int mask;
switch (vcs->data_norm) {
case VINO_DATA_NORM_NTSC:
case VINO_DATA_NORM_D1:
fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
if (fps < vino_data_norms[vcs->data_norm].fps_min)
fps = vino_data_norms[vcs->data_norm].fps_min;
if (fps > vino_data_norms[vcs->data_norm].fps_max)
fps = vino_data_norms[vcs->data_norm].fps_max;
switch (fps) {
case 6:
mask = 0x003;
break;
case 12:
mask = 0x0c3;
break;
case 18:
mask = 0x333;
break;
case 24:
mask = 0x3ff;
break;
case 30:
mask = 0xfff;
break;
default:
mask = VINO_FRAMERT_FULL;
}
vcs->framert_reg = VINO_FRAMERT_RT(mask);
break;
case VINO_DATA_NORM_PAL:
case VINO_DATA_NORM_SECAM:
fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
if (fps < vino_data_norms[vcs->data_norm].fps_min)
fps = vino_data_norms[vcs->data_norm].fps_min;
if (fps > vino_data_norms[vcs->data_norm].fps_max)
fps = vino_data_norms[vcs->data_norm].fps_max;
switch (fps) {
case 5:
mask = 0x003;
break;
case 10:
mask = 0x0c3;
break;
case 15:
mask = 0x333;
break;
case 20:
mask = 0x0ff;
break;
case 25:
mask = 0x3ff;
break;
default:
mask = VINO_FRAMERT_FULL;
}
vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
break;
}
vcs->fps = fps;
}
/* execute with input_lock locked */
static inline void vino_set_default_framerate(struct
vino_channel_settings *vcs)
{
vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
}
/* VINO I2C bus functions */
struct i2c_algo_sgi_data {
void *data; /* private data for lowlevel routines */
unsigned (*getctrl)(void *data);
void (*setctrl)(void *data, unsigned val);
unsigned (*rdata)(void *data);
void (*wdata)(void *data, unsigned val);
int xfer_timeout;
int ack_timeout;
};
static int wait_xfer_done(struct i2c_algo_sgi_data *adap)
{
int i;
for (i = 0; i < adap->xfer_timeout; i++) {
if ((adap->getctrl(adap->data) & SGI_I2C_XFER_BUSY) == 0)
return 0;
udelay(1);
}
return -ETIMEDOUT;
}
static int wait_ack(struct i2c_algo_sgi_data *adap)
{
int i;
if (wait_xfer_done(adap))
return -ETIMEDOUT;
for (i = 0; i < adap->ack_timeout; i++) {
if ((adap->getctrl(adap->data) & SGI_I2C_NACK) == 0)
return 0;
udelay(1);
}
return -ETIMEDOUT;
}
static int force_idle(struct i2c_algo_sgi_data *adap)
{
int i;
adap->setctrl(adap->data, SGI_I2C_FORCE_IDLE);
for (i = 0; i < adap->xfer_timeout; i++) {
if ((adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE) == 0)
goto out;
udelay(1);
}
return -ETIMEDOUT;
out:
if (adap->getctrl(adap->data) & SGI_I2C_BUS_ERR)
return -EIO;
return 0;
}
static int do_address(struct i2c_algo_sgi_data *adap, unsigned int addr,
int rd)
{
if (rd)
adap->setctrl(adap->data, SGI_I2C_NOT_IDLE);
/* Check if bus is idle, eventually force it to do so */
if (adap->getctrl(adap->data) & SGI_I2C_NOT_IDLE)
if (force_idle(adap))
return -EIO;
/* Write out the i2c chip address and specify operation */
adap->setctrl(adap->data,
SGI_I2C_HOLD_BUS | SGI_I2C_WRITE | SGI_I2C_NOT_IDLE);
if (rd)
addr |= 1;
adap->wdata(adap->data, addr);
if (wait_ack(adap))
return -EIO;
return 0;
}
static int i2c_read(struct i2c_algo_sgi_data *adap, unsigned char *buf,
unsigned int len)
{
int i;
adap->setctrl(adap->data,
SGI_I2C_HOLD_BUS | SGI_I2C_READ | SGI_I2C_NOT_IDLE);
for (i = 0; i < len; i++) {
if (wait_xfer_done(adap))
return -EIO;
buf[i] = adap->rdata(adap->data);
}
adap->setctrl(adap->data, SGI_I2C_RELEASE_BUS | SGI_I2C_FORCE_IDLE);
return 0;
}
static int i2c_write(struct i2c_algo_sgi_data *adap, unsigned char *buf,
unsigned int len)
{
int i;
/* We are already in write state */
for (i = 0; i < len; i++) {
adap->wdata(adap->data, buf[i]);
if (wait_ack(adap))
return -EIO;
}
return 0;
}
static int sgi_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
int num)
{
struct i2c_algo_sgi_data *adap = i2c_adap->algo_data;
struct i2c_msg *p;
int i, err = 0;
for (i = 0; !err && i < num; i++) {
p = &msgs[i];
err = do_address(adap, p->addr, p->flags & I2C_M_RD);
if (err || !p->len)
continue;
if (p->flags & I2C_M_RD)
err = i2c_read(adap, p->buf, p->len);
else
err = i2c_write(adap, p->buf, p->len);
}
return (err < 0) ? err : i;
}
static u32 sgi_func(struct i2c_adapter *adap)
{
return I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm sgi_algo = {
.master_xfer = sgi_xfer,
.functionality = sgi_func,
};
static unsigned i2c_vino_getctrl(void *data)
{
return vino->i2c_control;
}
static void i2c_vino_setctrl(void *data, unsigned val)
{
vino->i2c_control = val;
}
static unsigned i2c_vino_rdata(void *data)
{
return vino->i2c_data;
}
static void i2c_vino_wdata(void *data, unsigned val)
{
vino->i2c_data = val;
}
static struct i2c_algo_sgi_data i2c_sgi_vino_data = {
.getctrl = &i2c_vino_getctrl,
.setctrl = &i2c_vino_setctrl,
.rdata = &i2c_vino_rdata,
.wdata = &i2c_vino_wdata,
.xfer_timeout = 200,
.ack_timeout = 1000,
};
static struct i2c_adapter vino_i2c_adapter = {
.name = "VINO I2C bus",
.algo = &sgi_algo,
.algo_data = &i2c_sgi_vino_data,
.owner = THIS_MODULE,
};
/*
* Prepare VINO for DMA transfer...
* (execute only with vino_lock and input_lock locked)
*/
static int vino_dma_setup(struct vino_channel_settings *vcs,
struct vino_framebuffer *fb)
{
u32 ctrl, intr;
struct sgi_vino_channel *ch;
const struct vino_data_norm *norm;
dprintk("vino_dma_setup():\n");
vcs->field = 0;
fb->frame_counter = 0;
ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
norm = &vino_data_norms[vcs->data_norm];
ch->page_index = 0;
ch->line_count = 0;
/* VINO line size register is set 8 bytes less than actual */
ch->line_size = vcs->line_size - 8;
/* let VINO know where to transfer data */
ch->start_desc_tbl = fb->desc_table.dma;
ch->next_4_desc = fb->desc_table.dma;
/* give vino time to fetch the first four descriptors, 5 usec
* should be more than enough time */
udelay(VINO_DESC_FETCH_DELAY);
dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
ch->start_desc_tbl, ch->next_4_desc);
/* set the alpha register */
ch->alpha = vcs->alpha;
/* set clipping registers */
ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
VINO_CLIP_EVEN(norm->even.top +
vcs->clipping.top / 2) |
VINO_CLIP_X(vcs->clipping.left);
ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
vcs->clipping.bottom / 2 - 1) |
VINO_CLIP_EVEN(norm->even.top +
vcs->clipping.bottom / 2 - 1) |
VINO_CLIP_X(vcs->clipping.right);
/* set the size of actual content in the buffer (DECIMATION !) */
fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
vcs->decimation) *
((vcs->clipping.bottom - vcs->clipping.top) /
vcs->decimation) *
vino_data_formats[vcs->data_format].bpp;
ch->frame_rate = vcs->framert_reg;
ctrl = vino->control;
intr = vino->intr_status;
if (vcs->channel == VINO_CHANNEL_A) {
/* All interrupt conditions for this channel was cleared
* so clear the interrupt status register and enable
* interrupts */
intr &= ~VINO_INTSTAT_A;
ctrl |= VINO_CTRL_A_INT;
/* enable synchronization */
ctrl |= VINO_CTRL_A_SYNC_ENBL;
/* enable frame assembly */
ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
/* set decimation used */
if (vcs->decimation < 2)
ctrl &= ~VINO_CTRL_A_DEC_ENBL;
else {
ctrl |= VINO_CTRL_A_DEC_ENBL;
ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
ctrl |= (vcs->decimation - 1) <<
VINO_CTRL_A_DEC_SCALE_SHIFT;
}
/* select input interface */
if (vcs->input == VINO_INPUT_D1)
ctrl |= VINO_CTRL_A_SELECT;
else
ctrl &= ~VINO_CTRL_A_SELECT;
/* palette */
ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
VINO_CTRL_A_DITHER);
} else {
intr &= ~VINO_INTSTAT_B;
ctrl |= VINO_CTRL_B_INT;
ctrl |= VINO_CTRL_B_SYNC_ENBL;
ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
if (vcs->decimation < 2)
ctrl &= ~VINO_CTRL_B_DEC_ENBL;
else {
ctrl |= VINO_CTRL_B_DEC_ENBL;
ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
ctrl |= (vcs->decimation - 1) <<
VINO_CTRL_B_DEC_SCALE_SHIFT;
}
if (vcs->input == VINO_INPUT_D1)
ctrl |= VINO_CTRL_B_SELECT;
else
ctrl &= ~VINO_CTRL_B_SELECT;
ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
VINO_CTRL_B_DITHER);
}
/* set palette */
fb->data_format = vcs->data_format;
switch (vcs->data_format) {
case VINO_DATA_FMT_GREY:
ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
break;
case VINO_DATA_FMT_RGB32:
ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
break;
case VINO_DATA_FMT_YUV:
/* nothing needs to be done */
break;
case VINO_DATA_FMT_RGB332:
ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
break;
}
vino->intr_status = intr;
vino->control = ctrl;
return 0;
}
/* (execute only with vino_lock locked) */
static inline void vino_dma_start(struct vino_channel_settings *vcs)
{
u32 ctrl = vino->control;
dprintk("vino_dma_start():\n");
ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
vino->control = ctrl;
}
/* (execute only with vino_lock locked) */
static inline void vino_dma_stop(struct vino_channel_settings *vcs)
{
u32 ctrl = vino->control;
ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
vino->control = ctrl;
dprintk("vino_dma_stop():\n");
}
/*
* Load dummy page to descriptor registers. This prevents generating of
* spurious interrupts. (execute only with vino_lock locked)
*/
static void vino_clear_interrupt(struct vino_channel_settings *vcs)
{
struct sgi_vino_channel *ch;
ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
ch->page_index = 0;
ch->line_count = 0;
ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
udelay(VINO_DESC_FETCH_DELAY);
dprintk("channel %c clear interrupt condition\n",
(vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
}
static int vino_capture(struct vino_channel_settings *vcs,
struct vino_framebuffer *fb)
{
int err = 0;
unsigned long flags, flags2;
spin_lock_irqsave(&fb->state_lock, flags);
if (fb->state == VINO_FRAMEBUFFER_IN_USE)
err = -EBUSY;
fb->state = VINO_FRAMEBUFFER_IN_USE;
spin_unlock_irqrestore(&fb->state_lock, flags);
if (err)
return err;
spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
vino_dma_setup(vcs, fb);
vino_dma_start(vcs);
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
return err;
}
static
struct vino_framebuffer *vino_capture_enqueue(struct
vino_channel_settings *vcs,
unsigned int index)
{
struct vino_framebuffer *fb;
unsigned long flags;
dprintk("vino_capture_enqueue():\n");
spin_lock_irqsave(&vcs->capture_lock, flags);
fb = vino_queue_add(&vcs->fb_queue, index);
if (fb == NULL) {
dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
"queue full?\n");
goto out;
}
out:
spin_unlock_irqrestore(&vcs->capture_lock, flags);
return fb;
}
static int vino_capture_next(struct vino_channel_settings *vcs, int start)
{
struct vino_framebuffer *fb;
unsigned int incoming, id;
int err = 0;
unsigned long flags;
dprintk("vino_capture_next():\n");
spin_lock_irqsave(&vcs->capture_lock, flags);
if (start) {
/* start capture only if capture isn't in progress already */
if (vcs->capturing) {
spin_unlock_irqrestore(&vcs->capture_lock, flags);
return 0;
}
} else {
/* capture next frame:
* stop capture if capturing is not set */
if (!vcs->capturing) {
spin_unlock_irqrestore(&vcs->capture_lock, flags);
return 0;
}
}
err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
if (err) {
dprintk("vino_capture_next(): vino_queue_get_incoming() "
"failed\n");
err = -EINVAL;
goto out;
}
if (incoming == 0) {
dprintk("vino_capture_next(): no buffers available\n");
goto out;
}
fb = vino_queue_peek(&vcs->fb_queue, &id);
if (fb == NULL) {
dprintk("vino_capture_next(): vino_queue_peek() failed\n");
err = -EINVAL;
goto out;
}
if (start) {
vcs->capturing = 1;
}
spin_unlock_irqrestore(&vcs->capture_lock, flags);
err = vino_capture(vcs, fb);
return err;
out:
vcs->capturing = 0;
spin_unlock_irqrestore(&vcs->capture_lock, flags);
return err;
}
static inline int vino_is_capturing(struct vino_channel_settings *vcs)
{
int ret;
unsigned long flags;
spin_lock_irqsave(&vcs->capture_lock, flags);
ret = vcs->capturing;
spin_unlock_irqrestore(&vcs->capture_lock, flags);
return ret;
}
/* waits until a frame is captured */
static int vino_wait_for_frame(struct vino_channel_settings *vcs)
{
wait_queue_t wait;
int err = 0;
dprintk("vino_wait_for_frame():\n");
init_waitqueue_entry(&wait, current);
/* add ourselves into wait queue */
add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
/* to ensure that schedule_timeout will return immediately
* if VINO interrupt was triggered meanwhile */
schedule_timeout_interruptible(msecs_to_jiffies(100));
if (signal_pending(current))
err = -EINTR;
remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
dprintk("vino_wait_for_frame(): waiting for frame %s\n",
err ? "failed" : "ok");
return err;
}
/* the function assumes that PAGE_SIZE % 4 == 0 */
static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
unsigned char *pageptr;
unsigned int page, i;
unsigned char a;
for (page = 0; page < fb->desc_table.page_count; page++) {
pageptr = (unsigned char *)fb->desc_table.virtual[page];
for (i = 0; i < PAGE_SIZE; i += 4) {
a = pageptr[0];
pageptr[0] = pageptr[3];
pageptr[1] = pageptr[2];
pageptr[2] = pageptr[1];
pageptr[3] = a;
pageptr += 4;
}
}
}
/* checks if the buffer is in correct state and syncs data */
static int vino_check_buffer(struct vino_channel_settings *vcs,
struct vino_framebuffer *fb)
{
int err = 0;
unsigned long flags;
dprintk("vino_check_buffer():\n");
spin_lock_irqsave(&fb->state_lock, flags);
switch (fb->state) {
case VINO_FRAMEBUFFER_IN_USE:
err = -EIO;
break;
case VINO_FRAMEBUFFER_READY:
vino_sync_buffer(fb);
fb->state = VINO_FRAMEBUFFER_UNUSED;
break;
default:
err = -EINVAL;
}
spin_unlock_irqrestore(&fb->state_lock, flags);
if (!err) {
if (vino_pixel_conversion
&& (fb->data_format == VINO_DATA_FMT_RGB32)) {
vino_convert_to_rgba(fb);
}
} else if (err && (err != -EINVAL)) {
dprintk("vino_check_buffer(): buffer not ready\n");
spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
vino_dma_stop(vcs);
vino_clear_interrupt(vcs);
spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
}
return err;
}
/* forcefully terminates capture */
static void vino_capture_stop(struct vino_channel_settings *vcs)
{
unsigned int incoming = 0, outgoing = 0, id;
unsigned long flags, flags2;
dprintk("vino_capture_stop():\n");
spin_lock_irqsave(&vcs->capture_lock, flags);
/* unset capturing to stop queue processing */
vcs->capturing = 0;
spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
vino_dma_stop(vcs);
vino_clear_interrupt(vcs);
spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
/* remove all items from the queue */
if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
dprintk("vino_capture_stop(): "
"vino_queue_get_incoming() failed\n");
goto out;
}
while (incoming > 0) {
vino_queue_transfer(&vcs->fb_queue);
if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
dprintk("vino_capture_stop(): "
"vino_queue_get_incoming() failed\n");
goto out;
}
}
if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
dprintk("vino_capture_stop(): "
"vino_queue_get_outgoing() failed\n");
goto out;
}
while (outgoing > 0) {
vino_queue_remove(&vcs->fb_queue, &id);
if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
dprintk("vino_capture_stop(): "
"vino_queue_get_outgoing() failed\n");
goto out;
}
}
out:
spin_unlock_irqrestore(&vcs->capture_lock, flags);
}
#if 0
static int vino_capture_failed(struct vino_channel_settings *vcs)
{
struct vino_framebuffer *fb;
unsigned long flags;
unsigned int i;
int ret;
dprintk("vino_capture_failed():\n");
spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
vino_dma_stop(vcs);
vino_clear_interrupt(vcs);
spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
if (ret == VINO_QUEUE_ERROR) {
dprintk("vino_queue_get_incoming() failed\n");
return -EINVAL;
}
if (i == 0) {
/* no buffers to process */
return 0;
}
fb = vino_queue_peek(&vcs->fb_queue, &i);
if (fb == NULL) {
dprintk("vino_queue_peek() failed\n");
return -EINVAL;
}
spin_lock_irqsave(&fb->state_lock, flags);
if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
fb->state = VINO_FRAMEBUFFER_UNUSED;
vino_queue_transfer(&vcs->fb_queue);
vino_queue_remove(&vcs->fb_queue, &i);
/* we should actually discard the newest frame,
* but who cares ... */
}
spin_unlock_irqrestore(&fb->state_lock, flags);
return 0;
}
#endif
static void vino_skip_frame(struct vino_channel_settings *vcs)
{
struct vino_framebuffer *fb;
unsigned long flags;
unsigned int id;
spin_lock_irqsave(&vcs->capture_lock, flags);
fb = vino_queue_peek(&vcs->fb_queue, &id);
if (!fb) {
spin_unlock_irqrestore(&vcs->capture_lock, flags);
dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
return;
}
spin_unlock_irqrestore(&vcs->capture_lock, flags);
spin_lock_irqsave(&fb->state_lock, flags);
fb->state = VINO_FRAMEBUFFER_UNUSED;
spin_unlock_irqrestore(&fb->state_lock, flags);
vino_capture_next(vcs, 0);
}
static void vino_frame_done(struct vino_channel_settings *vcs)
{
struct vino_framebuffer *fb;
unsigned long flags;
spin_lock_irqsave(&vcs->capture_lock, flags);
fb = vino_queue_transfer(&vcs->fb_queue);
if (!fb) {
spin_unlock_irqrestore(&vcs->capture_lock, flags);
dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
return;
}
spin_unlock_irqrestore(&vcs->capture_lock, flags);
fb->frame_counter = vcs->int_data.frame_counter;
memcpy(&fb->timestamp, &vcs->int_data.timestamp,
sizeof(struct timeval));
spin_lock_irqsave(&fb->state_lock, flags);
if (fb->state == VINO_FRAMEBUFFER_IN_USE)
fb->state = VINO_FRAMEBUFFER_READY;
spin_unlock_irqrestore(&fb->state_lock, flags);
wake_up(&vcs->fb_queue.frame_wait_queue);
vino_capture_next(vcs, 0);
}
static void vino_capture_tasklet(unsigned long channel) {
struct vino_channel_settings *vcs;
vcs = (channel == VINO_CHANNEL_A)
? &vino_drvdata->a : &vino_drvdata->b;
if (vcs->int_data.skip)
vcs->int_data.skip_count++;
if (vcs->int_data.skip && (vcs->int_data.skip_count
<= VINO_MAX_FRAME_SKIP_COUNT)) {
vino_skip_frame(vcs);
} else {
vcs->int_data.skip_count = 0;
vino_frame_done(vcs);
}
}
static irqreturn_t vino_interrupt(int irq, void *dev_id)
{
u32 ctrl, intr;
unsigned int fc_a, fc_b;
int handled_a = 0, skip_a = 0, done_a = 0;
int handled_b = 0, skip_b = 0, done_b = 0;
#ifdef VINO_DEBUG_INT
int loop = 0;
unsigned int line_count = vino->a.line_count,
page_index = vino->a.page_index,
field_counter = vino->a.field_counter,
start_desc_tbl = vino->a.start_desc_tbl,
next_4_desc = vino->a.next_4_desc;
unsigned int line_count_2,
page_index_2,
field_counter_2,
start_desc_tbl_2,
next_4_desc_2;
#endif
spin_lock(&vino_drvdata->vino_lock);
while ((intr = vino->intr_status)) {
fc_a = vino->a.field_counter >> 1;
fc_b = vino->b.field_counter >> 1;
/* handle error-interrupts in some special way ?
* --> skips frames */
if (intr & VINO_INTSTAT_A) {
if (intr & VINO_INTSTAT_A_EOF) {
vino_drvdata->a.field++;
if (vino_drvdata->a.field > 1) {
vino_dma_stop(&vino_drvdata->a);
vino_clear_interrupt(&vino_drvdata->a);
vino_drvdata->a.field = 0;
done_a = 1;
} else {
if (vino->a.page_index
!= vino_drvdata->a.line_size) {
vino->a.line_count = 0;
vino->a.page_index =
vino_drvdata->
a.line_size;
vino->a.next_4_desc =
vino->a.start_desc_tbl;
}
}
dprintk("channel A end-of-field "
"interrupt: %04x\n", intr);
} else {
vino_dma_stop(&vino_drvdata->a);
vino_clear_interrupt(&vino_drvdata->a);
vino_drvdata->a.field = 0;
skip_a = 1;
dprintk("channel A error interrupt: %04x\n",
intr);
}
#ifdef VINO_DEBUG_INT
line_count_2 = vino->a.line_count;
page_index_2 = vino->a.page_index;
field_counter_2 = vino->a.field_counter;
start_desc_tbl_2 = vino->a.start_desc_tbl;
next_4_desc_2 = vino->a.next_4_desc;
printk("intr = %04x, loop = %d, field = %d\n",
intr, loop, vino_drvdata->a.field);
printk("1- line count = %04d, page index = %04d, "
"start = %08x, next = %08x\n"
" fieldc = %d, framec = %d\n",
line_count, page_index, start_desc_tbl,
next_4_desc, field_counter, fc_a);
printk("12-line count = %04d, page index = %04d, "
" start = %08x, next = %08x\n",
line_count_2, page_index_2, start_desc_tbl_2,
next_4_desc_2);
if (done_a)
printk("\n");
#endif
}
if (intr & VINO_INTSTAT_B) {
if (intr & VINO_INTSTAT_B_EOF) {
vino_drvdata->b.field++;
if (vino_drvdata->b.field > 1) {
vino_dma_stop(&vino_drvdata->b);
vino_clear_interrupt(&vino_drvdata->b);
vino_drvdata->b.field = 0;
done_b = 1;
}
dprintk("channel B end-of-field "
"interrupt: %04x\n", intr);
} else {
vino_dma_stop(&vino_drvdata->b);
vino_clear_interrupt(&vino_drvdata->b);
vino_drvdata->b.field = 0;
skip_b = 1;
dprintk("channel B error interrupt: %04x\n",
intr);
}
}
/* Always remember to clear interrupt status.
* Disable VINO interrupts while we do this. */
ctrl = vino->control;
vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
vino->intr_status = ~intr;
vino->control = ctrl;
spin_unlock(&vino_drvdata->vino_lock);
if ((!handled_a) && (done_a || skip_a)) {
if (!skip_a) {
v4l2_get_timestamp(
&vino_drvdata->a.int_data.timestamp);
vino_drvdata->a.int_data.frame_counter = fc_a;
}
vino_drvdata->a.int_data.skip = skip_a;
dprintk("channel A %s, interrupt: %d\n",
skip_a ? "skipping frame" : "frame done",
intr);
tasklet_hi_schedule(&vino_tasklet_a);
handled_a = 1;
}
if ((!handled_b) && (done_b || skip_b)) {
if (!skip_b) {
v4l2_get_timestamp(
&vino_drvdata->b.int_data.timestamp);
vino_drvdata->b.int_data.frame_counter = fc_b;
}
vino_drvdata->b.int_data.skip = skip_b;
dprintk("channel B %s, interrupt: %d\n",
skip_b ? "skipping frame" : "frame done",
intr);
tasklet_hi_schedule(&vino_tasklet_b);
handled_b = 1;
}
#ifdef VINO_DEBUG_INT
loop++;
#endif
spin_lock(&vino_drvdata->vino_lock);
}
spin_unlock(&vino_drvdata->vino_lock);
return IRQ_HANDLED;
}
/* VINO video input management */
static int vino_get_saa7191_input(int input)
{
switch (input) {
case VINO_INPUT_COMPOSITE:
return SAA7191_INPUT_COMPOSITE;
case VINO_INPUT_SVIDEO:
return SAA7191_INPUT_SVIDEO;
default:
printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
"invalid input!\n");
return -1;
}
}
/* execute with input_lock locked */
static int vino_is_input_owner(struct vino_channel_settings *vcs)
{
switch(vcs->input) {
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO:
return vino_drvdata->decoder_owner == vcs->channel;
case VINO_INPUT_D1:
return vino_drvdata->camera_owner == vcs->channel;
default:
return 0;
}
}
static int vino_acquire_input(struct vino_channel_settings *vcs)
{
unsigned long flags;
int ret = 0;
dprintk("vino_acquire_input():\n");
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
/* First try D1 and then SAA7191 */
if (vino_drvdata->camera
&& (vino_drvdata->camera_owner == VINO_NO_CHANNEL)) {
vino_drvdata->camera_owner = vcs->channel;
vcs->input = VINO_INPUT_D1;
vcs->data_norm = VINO_DATA_NORM_D1;
} else if (vino_drvdata->decoder
&& (vino_drvdata->decoder_owner == VINO_NO_CHANNEL)) {
int input;
int data_norm = 0;
v4l2_std_id norm;
input = VINO_INPUT_COMPOSITE;
ret = decoder_call(video, s_routing,
vino_get_saa7191_input(input), 0, 0);
if (ret) {
ret = -EINVAL;
goto out;
}
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
/* Don't hold spinlocks while auto-detecting norm
* as it may take a while... */
ret = decoder_call(video, querystd, &norm);
if (!ret) {
for (data_norm = 0; data_norm < 3; data_norm++) {
if (vino_data_norms[data_norm].std & norm)
break;
}
if (data_norm == 3)
data_norm = VINO_DATA_NORM_PAL;
ret = decoder_call(core, s_std, norm);
}
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (ret) {
ret = -EINVAL;
goto out;
}
vino_drvdata->decoder_owner = vcs->channel;
vcs->input = input;
vcs->data_norm = data_norm;
} else {
vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
vino_drvdata->b.input : vino_drvdata->a.input;
vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
}
if (vcs->input == VINO_INPUT_NONE) {
ret = -ENODEV;
goto out;
}
vino_set_default_clipping(vcs);
vino_set_default_scaling(vcs);
vino_set_default_framerate(vcs);
dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
out:
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
static int vino_set_input(struct vino_channel_settings *vcs, int input)
{
struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
&vino_drvdata->b : &vino_drvdata->a;
unsigned long flags;
int ret = 0;
dprintk("vino_set_input():\n");
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (vcs->input == input)
goto out;
switch (input) {
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO:
if (!vino_drvdata->decoder) {
ret = -EINVAL;
goto out;
}
if (vino_drvdata->decoder_owner == VINO_NO_CHANNEL) {
vino_drvdata->decoder_owner = vcs->channel;
}
if (vino_drvdata->decoder_owner == vcs->channel) {
int data_norm = 0;
v4l2_std_id norm;
ret = decoder_call(video, s_routing,
vino_get_saa7191_input(input), 0, 0);
if (ret) {
vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
ret = -EINVAL;
goto out;
}
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
/* Don't hold spinlocks while auto-detecting norm
* as it may take a while... */
ret = decoder_call(video, querystd, &norm);
if (!ret) {
for (data_norm = 0; data_norm < 3; data_norm++) {
if (vino_data_norms[data_norm].std & norm)
break;
}
if (data_norm == 3)
data_norm = VINO_DATA_NORM_PAL;
ret = decoder_call(core, s_std, norm);
}
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (ret) {
vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
ret = -EINVAL;
goto out;
}
vcs->input = input;
vcs->data_norm = data_norm;
} else {
if (input != vcs2->input) {
ret = -EBUSY;
goto out;
}
vcs->input = input;
vcs->data_norm = vcs2->data_norm;
}
if (vino_drvdata->camera_owner == vcs->channel) {
/* Transfer the ownership or release the input */
if (vcs2->input == VINO_INPUT_D1) {
vino_drvdata->camera_owner = vcs2->channel;
} else {
vino_drvdata->camera_owner = VINO_NO_CHANNEL;
}
}
break;
case VINO_INPUT_D1:
if (!vino_drvdata->camera) {
ret = -EINVAL;
goto out;
}
if (vino_drvdata->camera_owner == VINO_NO_CHANNEL)
vino_drvdata->camera_owner = vcs->channel;
if (vino_drvdata->decoder_owner == vcs->channel) {
/* Transfer the ownership or release the input */
if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
(vcs2->input == VINO_INPUT_SVIDEO)) {
vino_drvdata->decoder_owner = vcs2->channel;
} else {
vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
}
}
vcs->input = input;
vcs->data_norm = VINO_DATA_NORM_D1;
break;
default:
ret = -EINVAL;
goto out;
}
vino_set_default_clipping(vcs);
vino_set_default_scaling(vcs);
vino_set_default_framerate(vcs);
dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
out:
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
static void vino_release_input(struct vino_channel_settings *vcs)
{
struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
&vino_drvdata->b : &vino_drvdata->a;
unsigned long flags;
dprintk("vino_release_input():\n");
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
/* Release ownership of the channel
* and if the other channel takes input from
* the same source, transfer the ownership */
if (vino_drvdata->camera_owner == vcs->channel) {
if (vcs2->input == VINO_INPUT_D1) {
vino_drvdata->camera_owner = vcs2->channel;
} else {
vino_drvdata->camera_owner = VINO_NO_CHANNEL;
}
} else if (vino_drvdata->decoder_owner == vcs->channel) {
if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
(vcs2->input == VINO_INPUT_SVIDEO)) {
vino_drvdata->decoder_owner = vcs2->channel;
} else {
vino_drvdata->decoder_owner = VINO_NO_CHANNEL;
}
}
vcs->input = VINO_INPUT_NONE;
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
}
/* execute with input_lock locked */
static int vino_set_data_norm(struct vino_channel_settings *vcs,
unsigned int data_norm,
unsigned long *flags)
{
int err = 0;
if (data_norm == vcs->data_norm)
return 0;
switch (vcs->input) {
case VINO_INPUT_D1:
/* only one "norm" supported */
if (data_norm != VINO_DATA_NORM_D1)
return -EINVAL;
break;
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO: {
v4l2_std_id norm;
if ((data_norm != VINO_DATA_NORM_PAL)
&& (data_norm != VINO_DATA_NORM_NTSC)
&& (data_norm != VINO_DATA_NORM_SECAM))
return -EINVAL;
spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
/* Don't hold spinlocks while setting norm
* as it may take a while... */
norm = vino_data_norms[data_norm].std;
err = decoder_call(core, s_std, norm);
spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
if (err)
goto out;
vcs->data_norm = data_norm;
vino_set_default_clipping(vcs);
vino_set_default_scaling(vcs);
vino_set_default_framerate(vcs);
break;
}
default:
return -EINVAL;
}
out:
return err;
}
/* V4L2 helper functions */
static int vino_find_data_format(__u32 pixelformat)
{
int i;
for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
if (vino_data_formats[i].pixelformat == pixelformat)
return i;
}
return VINO_DATA_FMT_NONE;
}
static int vino_int_enum_input(struct vino_channel_settings *vcs, __u32 index)
{
int input = VINO_INPUT_NONE;
unsigned long flags;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (vino_drvdata->decoder && vino_drvdata->camera) {
switch (index) {
case 0:
input = VINO_INPUT_COMPOSITE;
break;
case 1:
input = VINO_INPUT_SVIDEO;
break;
case 2:
input = VINO_INPUT_D1;
break;
}
} else if (vino_drvdata->decoder) {
switch (index) {
case 0:
input = VINO_INPUT_COMPOSITE;
break;
case 1:
input = VINO_INPUT_SVIDEO;
break;
}
} else if (vino_drvdata->camera) {
switch (index) {
case 0:
input = VINO_INPUT_D1;
break;
}
}
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return input;
}
/* execute with input_lock locked */
static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
{
__u32 index = 0;
// FIXME: detect when no inputs available
if (vino_drvdata->decoder && vino_drvdata->camera) {
switch (vcs->input) {
case VINO_INPUT_COMPOSITE:
index = 0;
break;
case VINO_INPUT_SVIDEO:
index = 1;
break;
case VINO_INPUT_D1:
index = 2;
break;
}
} else if (vino_drvdata->decoder) {
switch (vcs->input) {
case VINO_INPUT_COMPOSITE:
index = 0;
break;
case VINO_INPUT_SVIDEO:
index = 1;
break;
}
} else if (vino_drvdata->camera) {
switch (vcs->input) {
case VINO_INPUT_D1:
index = 0;
break;
}
}
return index;
}
/* V4L2 ioctls */
static int vino_querycap(struct file *file, void *__fh,
struct v4l2_capability *cap)
{
memset(cap, 0, sizeof(struct v4l2_capability));
strcpy(cap->driver, vino_driver_name);
strcpy(cap->card, vino_driver_description);
strcpy(cap->bus_info, vino_bus_name);
cap->capabilities =
V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING;
// V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
return 0;
}
static int vino_enum_input(struct file *file, void *__fh,
struct v4l2_input *i)
{
struct vino_channel_settings *vcs = video_drvdata(file);
__u32 index = i->index;
int input;
dprintk("requested index = %d\n", index);
input = vino_int_enum_input(vcs, index);
if (input == VINO_INPUT_NONE)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_CAMERA;
i->std = vino_inputs[input].std;
strcpy(i->name, vino_inputs[input].name);
if (input == VINO_INPUT_COMPOSITE || input == VINO_INPUT_SVIDEO)
decoder_call(video, g_input_status, &i->status);
return 0;
}
static int vino_g_input(struct file *file, void *__fh,
unsigned int *i)
{
struct vino_channel_settings *vcs = video_drvdata(file);
__u32 index;
int input;
unsigned long flags;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
input = vcs->input;
index = vino_find_input_index(vcs);
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
dprintk("input = %d\n", input);
if (input == VINO_INPUT_NONE) {
return -EINVAL;
}
*i = index;
return 0;
}
static int vino_s_input(struct file *file, void *__fh,
unsigned int i)
{
struct vino_channel_settings *vcs = video_drvdata(file);
int input;
dprintk("requested input = %d\n", i);
input = vino_int_enum_input(vcs, i);
if (input == VINO_INPUT_NONE)
return -EINVAL;
return vino_set_input(vcs, input);
}
static int vino_querystd(struct file *file, void *__fh,
v4l2_std_id *std)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
int err = 0;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch (vcs->input) {
case VINO_INPUT_D1:
*std = vino_inputs[vcs->input].std;
break;
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO: {
decoder_call(video, querystd, std);
break;
}
default:
err = -EINVAL;
}
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
static int vino_g_std(struct file *file, void *__fh,
v4l2_std_id *std)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
*std = vino_data_norms[vcs->data_norm].std;
dprintk("current standard = %d\n", vcs->data_norm);
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return 0;
}
static int vino_s_std(struct file *file, void *__fh,
v4l2_std_id std)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (!vino_is_input_owner(vcs)) {
ret = -EBUSY;
goto out;
}
/* check if the standard is valid for the current input */
if (std & vino_inputs[vcs->input].std) {
dprintk("standard accepted\n");
/* change the video norm for SAA7191
* and accept NTSC for D1 (do nothing) */
if (vcs->input == VINO_INPUT_D1)
goto out;
if (std & V4L2_STD_PAL) {
ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
&flags);
} else if (std & V4L2_STD_NTSC) {
ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
&flags);
} else if (std & V4L2_STD_SECAM) {
ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
&flags);
} else {
ret = -EINVAL;
}
if (ret) {
ret = -EINVAL;
}
} else {
ret = -EINVAL;
}
out:
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
static int vino_enum_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_fmtdesc *fd)
{
dprintk("format index = %d\n", fd->index);
if (fd->index >= VINO_DATA_FMT_COUNT)
return -EINVAL;
dprintk("format name = %s\n", vino_data_formats[fd->index].description);
fd->pixelformat = vino_data_formats[fd->index].pixelformat;
strcpy(fd->description, vino_data_formats[fd->index].description);
return 0;
}
static int vino_try_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_format *f)
{
struct vino_channel_settings *vcs = video_drvdata(file);
struct vino_channel_settings tempvcs;
unsigned long flags;
struct v4l2_pix_format *pf = &f->fmt.pix;
dprintk("requested: w = %d, h = %d\n",
pf->width, pf->height);
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
tempvcs.data_format = vino_find_data_format(pf->pixelformat);
if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
tempvcs.data_format = VINO_DATA_FMT_GREY;
pf->pixelformat =
vino_data_formats[tempvcs.data_format].
pixelformat;
}
/* data format must be set before clipping/scaling */
vino_set_scaling(&tempvcs, pf->width, pf->height);
dprintk("data format = %s\n",
vino_data_formats[tempvcs.data_format].description);
pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
tempvcs.decimation;
pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
tempvcs.decimation;
pf->field = V4L2_FIELD_INTERLACED;
pf->bytesperline = tempvcs.line_size;
pf->sizeimage = tempvcs.line_size *
(tempvcs.clipping.bottom - tempvcs.clipping.top) /
tempvcs.decimation;
pf->colorspace =
vino_data_formats[tempvcs.data_format].colorspace;
pf->priv = 0;
return 0;
}
static int vino_g_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_format *f)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
struct v4l2_pix_format *pf = &f->fmt.pix;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
pf->width = (vcs->clipping.right - vcs->clipping.left) /
vcs->decimation;
pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
vcs->decimation;
pf->pixelformat =
vino_data_formats[vcs->data_format].pixelformat;
pf->field = V4L2_FIELD_INTERLACED;
pf->bytesperline = vcs->line_size;
pf->sizeimage = vcs->line_size *
(vcs->clipping.bottom - vcs->clipping.top) /
vcs->decimation;
pf->colorspace =
vino_data_formats[vcs->data_format].colorspace;
pf->priv = 0;
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return 0;
}
static int vino_s_fmt_vid_cap(struct file *file, void *__fh,
struct v4l2_format *f)
{
struct vino_channel_settings *vcs = video_drvdata(file);
int data_format;
unsigned long flags;
struct v4l2_pix_format *pf = &f->fmt.pix;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
data_format = vino_find_data_format(pf->pixelformat);
if (data_format == VINO_DATA_FMT_NONE) {
vcs->data_format = VINO_DATA_FMT_GREY;
pf->pixelformat =
vino_data_formats[vcs->data_format].
pixelformat;
} else {
vcs->data_format = data_format;
}
/* data format must be set before clipping/scaling */
vino_set_scaling(vcs, pf->width, pf->height);
dprintk("data format = %s\n",
vino_data_formats[vcs->data_format].description);
pf->width = vcs->clipping.right - vcs->clipping.left;
pf->height = vcs->clipping.bottom - vcs->clipping.top;
pf->field = V4L2_FIELD_INTERLACED;
pf->bytesperline = vcs->line_size;
pf->sizeimage = vcs->line_size *
(vcs->clipping.bottom - vcs->clipping.top) /
vcs->decimation;
pf->colorspace =
vino_data_formats[vcs->data_format].colorspace;
pf->priv = 0;
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return 0;
}
static int vino_cropcap(struct file *file, void *__fh,
struct v4l2_cropcap *ccap)
{
struct vino_channel_settings *vcs = video_drvdata(file);
const struct vino_data_norm *norm;
unsigned long flags;
switch (ccap->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
norm = &vino_data_norms[vcs->data_norm];
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
ccap->bounds.left = 0;
ccap->bounds.top = 0;
ccap->bounds.width = norm->width;
ccap->bounds.height = norm->height;
memcpy(&ccap->defrect, &ccap->bounds,
sizeof(struct v4l2_rect));
ccap->pixelaspect.numerator = 1;
ccap->pixelaspect.denominator = 1;
break;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
default:
return -EINVAL;
}
return 0;
}
static int vino_g_crop(struct file *file, void *__fh,
struct v4l2_crop *c)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
switch (c->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
c->c.left = vcs->clipping.left;
c->c.top = vcs->clipping.top;
c->c.width = vcs->clipping.right - vcs->clipping.left;
c->c.height = vcs->clipping.bottom - vcs->clipping.top;
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
break;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
default:
return -EINVAL;
}
return 0;
}
static int vino_s_crop(struct file *file, void *__fh,
const struct v4l2_crop *c)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
switch (c->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
vino_set_clipping(vcs, c->c.left, c->c.top,
c->c.width, c->c.height);
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
break;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
default:
return -EINVAL;
}
return 0;
}
static int vino_g_parm(struct file *file, void *__fh,
struct v4l2_streamparm *sp)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
struct v4l2_captureparm *cp = &sp->parm.capture;
cp->capability = V4L2_CAP_TIMEPERFRAME;
cp->timeperframe.numerator = 1;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
cp->timeperframe.denominator = vcs->fps;
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
/* TODO: cp->readbuffers = xxx; */
return 0;
}
static int vino_s_parm(struct file *file, void *__fh,
struct v4l2_streamparm *sp)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
struct v4l2_captureparm *cp = &sp->parm.capture;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if ((cp->timeperframe.numerator == 0) ||
(cp->timeperframe.denominator == 0)) {
/* reset framerate */
vino_set_default_framerate(vcs);
} else {
vino_set_framerate(vcs, cp->timeperframe.denominator /
cp->timeperframe.numerator);
}
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return 0;
}
static int vino_reqbufs(struct file *file, void *__fh,
struct v4l2_requestbuffers *rb)
{
struct vino_channel_settings *vcs = video_drvdata(file);
if (vcs->reading)
return -EBUSY;
/* TODO: check queue type */
if (rb->memory != V4L2_MEMORY_MMAP) {
dprintk("type not mmap\n");
return -EINVAL;
}
dprintk("count = %d\n", rb->count);
if (rb->count > 0) {
if (vino_is_capturing(vcs)) {
dprintk("busy, capturing\n");
return -EBUSY;
}
if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
dprintk("busy, buffers still mapped\n");
return -EBUSY;
} else {
vcs->streaming = 0;
vino_queue_free(&vcs->fb_queue);
vino_queue_init(&vcs->fb_queue, &rb->count);
}
} else {
vcs->streaming = 0;
vino_capture_stop(vcs);
vino_queue_free(&vcs->fb_queue);
}
return 0;
}
static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
struct vino_framebuffer *fb,
struct v4l2_buffer *b)
{
if (vino_queue_outgoing_contains(&vcs->fb_queue,
fb->id)) {
b->flags &= ~V4L2_BUF_FLAG_QUEUED;
b->flags |= V4L2_BUF_FLAG_DONE;
} else if (vino_queue_incoming_contains(&vcs->fb_queue,
fb->id)) {
b->flags &= ~V4L2_BUF_FLAG_DONE;
b->flags |= V4L2_BUF_FLAG_QUEUED;
} else {
b->flags &= ~(V4L2_BUF_FLAG_DONE |
V4L2_BUF_FLAG_QUEUED);
}
b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
if (fb->map_count > 0)
b->flags |= V4L2_BUF_FLAG_MAPPED;
b->flags &= ~V4L2_BUF_FLAG_TIMESTAMP_MASK;
b->flags |= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
b->index = fb->id;
b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
b->m.offset = fb->offset;
b->bytesused = fb->data_size;
b->length = fb->size;
b->field = V4L2_FIELD_INTERLACED;
b->sequence = fb->frame_counter;
memcpy(&b->timestamp, &fb->timestamp,
sizeof(struct timeval));
// b->input ?
dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
fb->id, fb->size, fb->data_size, fb->offset);
}
static int vino_querybuf(struct file *file, void *__fh,
struct v4l2_buffer *b)
{
struct vino_channel_settings *vcs = video_drvdata(file);
struct vino_framebuffer *fb;
if (vcs->reading)
return -EBUSY;
/* TODO: check queue type */
if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
dprintk("invalid index = %d\n",
b->index);
return -EINVAL;
}
fb = vino_queue_get_buffer(&vcs->fb_queue,
b->index);
if (fb == NULL) {
dprintk("vino_queue_get_buffer() failed");
return -EINVAL;
}
vino_v4l2_get_buffer_status(vcs, fb, b);
return 0;
}
static int vino_qbuf(struct file *file, void *__fh,
struct v4l2_buffer *b)
{
struct vino_channel_settings *vcs = video_drvdata(file);
struct vino_framebuffer *fb;
int ret;
if (vcs->reading)
return -EBUSY;
/* TODO: check queue type */
if (b->memory != V4L2_MEMORY_MMAP) {
dprintk("type not mmap\n");
return -EINVAL;
}
fb = vino_capture_enqueue(vcs, b->index);
if (fb == NULL)
return -EINVAL;
vino_v4l2_get_buffer_status(vcs, fb, b);
if (vcs->streaming) {
ret = vino_capture_next(vcs, 1);
if (ret)
return ret;
}
return 0;
}
static int vino_dqbuf(struct file *file, void *__fh,
struct v4l2_buffer *b)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned int nonblocking = file->f_flags & O_NONBLOCK;
struct vino_framebuffer *fb;
unsigned int incoming, outgoing;
int err;
if (vcs->reading)
return -EBUSY;
/* TODO: check queue type */
err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
if (err) {
dprintk("vino_queue_get_incoming() failed\n");
return -EINVAL;
}
err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
if (err) {
dprintk("vino_queue_get_outgoing() failed\n");
return -EINVAL;
}
dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
if (outgoing == 0) {
if (incoming == 0) {
dprintk("no incoming or outgoing buffers\n");
return -EINVAL;
}
if (nonblocking) {
dprintk("non-blocking I/O was selected and "
"there are no buffers to dequeue\n");
return -EAGAIN;
}
err = vino_wait_for_frame(vcs);
if (err) {
err = vino_wait_for_frame(vcs);
if (err) {
/* interrupted or no frames captured because of
* frame skipping */
/* vino_capture_failed(vcs); */
return -EIO;
}
}
}
fb = vino_queue_remove(&vcs->fb_queue, &b->index);
if (fb == NULL) {
dprintk("vino_queue_remove() failed\n");
return -EINVAL;
}
err = vino_check_buffer(vcs, fb);
vino_v4l2_get_buffer_status(vcs, fb, b);
if (err)
return -EIO;
return 0;
}
static int vino_streamon(struct file *file, void *__fh,
enum v4l2_buf_type i)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned int incoming;
int ret;
if (vcs->reading)
return -EBUSY;
if (vcs->streaming)
return 0;
// TODO: check queue type
if (vino_queue_get_length(&vcs->fb_queue) < 1) {
dprintk("no buffers allocated\n");
return -EINVAL;
}
ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
if (ret) {
dprintk("vino_queue_get_incoming() failed\n");
return -EINVAL;
}
vcs->streaming = 1;
if (incoming > 0) {
ret = vino_capture_next(vcs, 1);
if (ret) {
vcs->streaming = 0;
dprintk("couldn't start capture\n");
return -EINVAL;
}
}
return 0;
}
static int vino_streamoff(struct file *file, void *__fh,
enum v4l2_buf_type i)
{
struct vino_channel_settings *vcs = video_drvdata(file);
if (vcs->reading)
return -EBUSY;
if (!vcs->streaming)
return 0;
vcs->streaming = 0;
vino_capture_stop(vcs);
return 0;
}
static int vino_queryctrl(struct file *file, void *__fh,
struct v4l2_queryctrl *queryctrl)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
int i;
int err = 0;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch (vcs->input) {
case VINO_INPUT_D1:
for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
if (vino_indycam_v4l2_controls[i].id ==
queryctrl->id) {
memcpy(queryctrl,
&vino_indycam_v4l2_controls[i],
sizeof(struct v4l2_queryctrl));
queryctrl->reserved[0] = 0;
goto found;
}
}
err = -EINVAL;
break;
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO:
for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
if (vino_saa7191_v4l2_controls[i].id ==
queryctrl->id) {
memcpy(queryctrl,
&vino_saa7191_v4l2_controls[i],
sizeof(struct v4l2_queryctrl));
queryctrl->reserved[0] = 0;
goto found;
}
}
err = -EINVAL;
break;
default:
err = -EINVAL;
}
found:
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
static int vino_g_ctrl(struct file *file, void *__fh,
struct v4l2_control *control)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
int i;
int err = 0;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch (vcs->input) {
case VINO_INPUT_D1: {
err = -EINVAL;
for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
if (vino_indycam_v4l2_controls[i].id == control->id) {
err = 0;
break;
}
}
if (err)
goto out;
err = camera_call(core, g_ctrl, control);
if (err)
err = -EINVAL;
break;
}
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO: {
err = -EINVAL;
for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
if (vino_saa7191_v4l2_controls[i].id == control->id) {
err = 0;
break;
}
}
if (err)
goto out;
err = decoder_call(core, g_ctrl, control);
if (err)
err = -EINVAL;
break;
}
default:
err = -EINVAL;
}
out:
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
static int vino_s_ctrl(struct file *file, void *__fh,
struct v4l2_control *control)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long flags;
int i;
int err = 0;
spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (!vino_is_input_owner(vcs)) {
err = -EBUSY;
goto out;
}
switch (vcs->input) {
case VINO_INPUT_D1: {
err = -EINVAL;
for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
if (vino_indycam_v4l2_controls[i].id == control->id) {
err = 0;
break;
}
}
if (err)
goto out;
if (control->value < vino_indycam_v4l2_controls[i].minimum ||
control->value > vino_indycam_v4l2_controls[i].maximum) {
err = -ERANGE;
goto out;
}
err = camera_call(core, s_ctrl, control);
if (err)
err = -EINVAL;
break;
}
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO: {
err = -EINVAL;
for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
if (vino_saa7191_v4l2_controls[i].id == control->id) {
err = 0;
break;
}
}
if (err)
goto out;
if (control->value < vino_saa7191_v4l2_controls[i].minimum ||
control->value > vino_saa7191_v4l2_controls[i].maximum) {
err = -ERANGE;
goto out;
}
err = decoder_call(core, s_ctrl, control);
if (err)
err = -EINVAL;
break;
}
default:
err = -EINVAL;
}
out:
spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
/* File operations */
static int vino_open(struct file *file)
{
struct vino_channel_settings *vcs = video_drvdata(file);
int ret = 0;
dprintk("open(): channel = %c\n",
(vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
mutex_lock(&vcs->mutex);
if (vcs->users) {
dprintk("open(): driver busy\n");
ret = -EBUSY;
goto out;
}
ret = vino_acquire_input(vcs);
if (ret) {
dprintk("open(): vino_acquire_input() failed\n");
goto out;
}
vcs->users++;
out:
mutex_unlock(&vcs->mutex);
dprintk("open(): %s!\n", ret ? "failed" : "complete");
return ret;
}
static int vino_close(struct file *file)
{
struct vino_channel_settings *vcs = video_drvdata(file);
dprintk("close():\n");
mutex_lock(&vcs->mutex);
vcs->users--;
if (!vcs->users) {
vino_release_input(vcs);
/* stop DMA and free buffers */
vino_capture_stop(vcs);
vino_queue_free(&vcs->fb_queue);
}
mutex_unlock(&vcs->mutex);
return 0;
}
static void vino_vm_open(struct vm_area_struct *vma)
{
struct vino_framebuffer *fb = vma->vm_private_data;
fb->map_count++;
dprintk("vino_vm_open(): count = %d\n", fb->map_count);
}
static void vino_vm_close(struct vm_area_struct *vma)
{
struct vino_framebuffer *fb = vma->vm_private_data;
fb->map_count--;
dprintk("vino_vm_close(): count = %d\n", fb->map_count);
}
static const struct vm_operations_struct vino_vm_ops = {
.open = vino_vm_open,
.close = vino_vm_close,
};
static int vino_mmap(struct file *file, struct vm_area_struct *vma)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned long start = vma->vm_start;
unsigned long size = vma->vm_end - vma->vm_start;
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vino_framebuffer *fb = NULL;
unsigned int i, length;
int ret = 0;
dprintk("mmap():\n");
// TODO: reject mmap if already mapped
if (mutex_lock_interruptible(&vcs->mutex))
return -EINTR;
if (vcs->reading) {
ret = -EBUSY;
goto out;
}
// TODO: check queue type
if (!(vma->vm_flags & VM_WRITE)) {
dprintk("mmap(): app bug: PROT_WRITE please\n");
ret = -EINVAL;
goto out;
}
if (!(vma->vm_flags & VM_SHARED)) {
dprintk("mmap(): app bug: MAP_SHARED please\n");
ret = -EINVAL;
goto out;
}
/* find the correct buffer using offset */
length = vino_queue_get_length(&vcs->fb_queue);
if (length == 0) {
dprintk("mmap(): queue not initialized\n");
ret = -EINVAL;
goto out;
}
for (i = 0; i < length; i++) {
fb = vino_queue_get_buffer(&vcs->fb_queue, i);
if (fb == NULL) {
dprintk("mmap(): vino_queue_get_buffer() failed\n");
ret = -EINVAL;
goto out;
}
if (fb->offset == offset)
goto found;
}
dprintk("mmap(): invalid offset = %lu\n", offset);
ret = -EINVAL;
goto out;
found:
dprintk("mmap(): buffer = %d\n", i);
if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
dprintk("mmap(): failed: size = %lu > %lu\n",
size, fb->desc_table.page_count * PAGE_SIZE);
ret = -EINVAL;
goto out;
}
for (i = 0; i < fb->desc_table.page_count; i++) {
unsigned long pfn =
virt_to_phys((void *)fb->desc_table.virtual[i]) >>
PAGE_SHIFT;
if (size < PAGE_SIZE)
break;
// protection was: PAGE_READONLY
if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
vma->vm_page_prot)) {
dprintk("mmap(): remap_pfn_range() failed\n");
ret = -EAGAIN;
goto out;
}
start += PAGE_SIZE;
size -= PAGE_SIZE;
}
fb->map_count = 1;
vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
vma->vm_flags &= ~VM_IO;
vma->vm_private_data = fb;
vma->vm_file = file;
vma->vm_ops = &vino_vm_ops;
out:
mutex_unlock(&vcs->mutex);
return ret;
}
static unsigned int vino_poll(struct file *file, poll_table *pt)
{
struct vino_channel_settings *vcs = video_drvdata(file);
unsigned int outgoing;
unsigned int ret = 0;
// lock mutex (?)
// TODO: this has to be corrected for different read modes
dprintk("poll():\n");
if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
dprintk("poll(): vino_queue_get_outgoing() failed\n");
ret = POLLERR;
goto error;
}
if (outgoing > 0)
goto over;
poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
dprintk("poll(): vino_queue_get_outgoing() failed\n");
ret = POLLERR;
goto error;
}
over:
dprintk("poll(): data %savailable\n",
(outgoing > 0) ? "" : "not ");
if (outgoing > 0)
ret = POLLIN | POLLRDNORM;
error:
return ret;
}
static long vino_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct vino_channel_settings *vcs = video_drvdata(file);
long ret;
if (mutex_lock_interruptible(&vcs->mutex))
return -EINTR;
ret = video_ioctl2(file, cmd, arg);
mutex_unlock(&vcs->mutex);
return ret;
}
/* Initialization and cleanup */
/* __initdata */
static int vino_init_stage;
const struct v4l2_ioctl_ops vino_ioctl_ops = {
.vidioc_enum_fmt_vid_cap = vino_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vino_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vino_s_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vino_try_fmt_vid_cap,
.vidioc_querycap = vino_querycap,
.vidioc_enum_input = vino_enum_input,
.vidioc_g_input = vino_g_input,
.vidioc_s_input = vino_s_input,
.vidioc_g_std = vino_g_std,
.vidioc_s_std = vino_s_std,
.vidioc_querystd = vino_querystd,
.vidioc_cropcap = vino_cropcap,
.vidioc_s_crop = vino_s_crop,
.vidioc_g_crop = vino_g_crop,
.vidioc_s_parm = vino_s_parm,
.vidioc_g_parm = vino_g_parm,
.vidioc_reqbufs = vino_reqbufs,
.vidioc_querybuf = vino_querybuf,
.vidioc_qbuf = vino_qbuf,
.vidioc_dqbuf = vino_dqbuf,
.vidioc_streamon = vino_streamon,
.vidioc_streamoff = vino_streamoff,
.vidioc_queryctrl = vino_queryctrl,
.vidioc_g_ctrl = vino_g_ctrl,
.vidioc_s_ctrl = vino_s_ctrl,
};
static const struct v4l2_file_operations vino_fops = {
.owner = THIS_MODULE,
.open = vino_open,
.release = vino_close,
.unlocked_ioctl = vino_ioctl,
.mmap = vino_mmap,
.poll = vino_poll,
};
static struct video_device vdev_template = {
.name = "NOT SET",
.fops = &vino_fops,
.ioctl_ops = &vino_ioctl_ops,
.tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
};
static void vino_module_cleanup(int stage)
{
switch(stage) {
case 11:
video_unregister_device(vino_drvdata->b.vdev);
vino_drvdata->b.vdev = NULL;
case 10:
video_unregister_device(vino_drvdata->a.vdev);
vino_drvdata->a.vdev = NULL;
case 9:
i2c_del_adapter(&vino_i2c_adapter);
case 8:
free_irq(SGI_VINO_IRQ, NULL);
case 7:
if (vino_drvdata->b.vdev) {
video_device_release(vino_drvdata->b.vdev);
vino_drvdata->b.vdev = NULL;
}
case 6:
if (vino_drvdata->a.vdev) {
video_device_release(vino_drvdata->a.vdev);
vino_drvdata->a.vdev = NULL;
}
case 5:
/* all entries in dma_cpu dummy table have the same address */
dma_unmap_single(NULL,
vino_drvdata->dummy_desc_table.dma_cpu[0],
PAGE_SIZE, DMA_FROM_DEVICE);
dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
* sizeof(dma_addr_t),
(void *)vino_drvdata->
dummy_desc_table.dma_cpu,
vino_drvdata->dummy_desc_table.dma);
case 4:
free_page(vino_drvdata->dummy_page);
case 3:
v4l2_device_unregister(&vino_drvdata->v4l2_dev);
case 2:
kfree(vino_drvdata);
case 1:
iounmap(vino);
case 0:
break;
default:
dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
stage);
}
}
static int vino_probe(void)
{
unsigned long rev_id;
if (ip22_is_fullhouse()) {
printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
return -ENODEV;
}
if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
return -ENODEV;
}
vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
if (!vino) {
printk(KERN_ERR "VINO: ioremap() failed\n");
return -EIO;
}
vino_init_stage++;
if (get_dbe(rev_id, &(vino->rev_id))) {
printk(KERN_ERR "Failed to read VINO revision register\n");
vino_module_cleanup(vino_init_stage);
return -ENODEV;
}
if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
rev_id);
vino_module_cleanup(vino_init_stage);
return -ENODEV;
}
printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
return 0;
}
static int vino_init(void)
{
dma_addr_t dma_dummy_address;
int err;
int i;
vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
if (!vino_drvdata) {
vino_module_cleanup(vino_init_stage);
return -ENOMEM;
}
vino_init_stage++;
strlcpy(vino_drvdata->v4l2_dev.name, "vino",
sizeof(vino_drvdata->v4l2_dev.name));
err = v4l2_device_register(NULL, &vino_drvdata->v4l2_dev);
if (err)
return err;
vino_init_stage++;
/* create a dummy dma descriptor */
vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!vino_drvdata->dummy_page) {
vino_module_cleanup(vino_init_stage);
return -ENOMEM;
}
vino_init_stage++;
// TODO: use page_count in dummy_desc_table
vino_drvdata->dummy_desc_table.dma_cpu =
dma_alloc_coherent(NULL,
VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
&vino_drvdata->dummy_desc_table.dma,
GFP_KERNEL | GFP_DMA);
if (!vino_drvdata->dummy_desc_table.dma_cpu) {
vino_module_cleanup(vino_init_stage);
return -ENOMEM;
}
vino_init_stage++;
dma_dummy_address = dma_map_single(NULL,
(void *)vino_drvdata->dummy_page,
PAGE_SIZE, DMA_FROM_DEVICE);
for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
}
/* initialize VINO */
vino->control = 0;
vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
udelay(VINO_DESC_FETCH_DELAY);
vino->intr_status = 0;
vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
return 0;
}
static int vino_init_channel_settings(struct vino_channel_settings *vcs,
unsigned int channel, const char *name)
{
vcs->channel = channel;
vcs->input = VINO_INPUT_NONE;
vcs->alpha = 0;
vcs->users = 0;
vcs->data_format = VINO_DATA_FMT_GREY;
vcs->data_norm = VINO_DATA_NORM_NTSC;
vcs->decimation = 1;
vino_set_default_clipping(vcs);
vino_set_default_framerate(vcs);
vcs->capturing = 0;
mutex_init(&vcs->mutex);
spin_lock_init(&vcs->capture_lock);
mutex_init(&vcs->fb_queue.queue_mutex);
spin_lock_init(&vcs->fb_queue.queue_lock);
init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
vcs->vdev = video_device_alloc();
if (!vcs->vdev) {
vino_module_cleanup(vino_init_stage);
return -ENOMEM;
}
vino_init_stage++;
memcpy(vcs->vdev, &vdev_template,
sizeof(struct video_device));
strcpy(vcs->vdev->name, name);
vcs->vdev->release = video_device_release;
vcs->vdev->v4l2_dev = &vino_drvdata->v4l2_dev;
video_set_drvdata(vcs->vdev, vcs);
return 0;
}
static int __init vino_module_init(void)
{
int ret;
printk(KERN_INFO "SGI VINO driver version %s\n",
VINO_MODULE_VERSION);
ret = vino_probe();
if (ret)
return ret;
ret = vino_init();
if (ret)
return ret;
/* initialize data structures */
spin_lock_init(&vino_drvdata->vino_lock);
spin_lock_init(&vino_drvdata->input_lock);
ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
vino_vdev_name_a);
if (ret)
return ret;
ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
vino_vdev_name_b);
if (ret)
return ret;
/* initialize hardware and register V4L devices */
ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
vino_driver_description, NULL);
if (ret) {
printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
SGI_VINO_IRQ);
vino_module_cleanup(vino_init_stage);
return -EAGAIN;
}
vino_init_stage++;
ret = i2c_add_adapter(&vino_i2c_adapter);
if (ret) {
printk(KERN_ERR "VINO I2C bus registration failed\n");
vino_module_cleanup(vino_init_stage);
return ret;
}
i2c_set_adapdata(&vino_i2c_adapter, &vino_drvdata->v4l2_dev);
vino_init_stage++;
ret = video_register_device(vino_drvdata->a.vdev,
VFL_TYPE_GRABBER, -1);
if (ret < 0) {
printk(KERN_ERR "VINO channel A Video4Linux-device "
"registration failed\n");
vino_module_cleanup(vino_init_stage);
return -EINVAL;
}
vino_init_stage++;
ret = video_register_device(vino_drvdata->b.vdev,
VFL_TYPE_GRABBER, -1);
if (ret < 0) {
printk(KERN_ERR "VINO channel B Video4Linux-device "
"registration failed\n");
vino_module_cleanup(vino_init_stage);
return -EINVAL;
}
vino_init_stage++;
vino_drvdata->decoder =
v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter,
"saa7191", 0, I2C_ADDRS(0x45));
vino_drvdata->camera =
v4l2_i2c_new_subdev(&vino_drvdata->v4l2_dev, &vino_i2c_adapter,
"indycam", 0, I2C_ADDRS(0x2b));
dprintk("init complete!\n");
return 0;
}
static void __exit vino_module_exit(void)
{
dprintk("exiting, stage = %d ...\n", vino_init_stage);
vino_module_cleanup(vino_init_stage);
dprintk("cleanup complete, exit!\n");
}
module_init(vino_module_init);
module_exit(vino_module_exit);