/*
* TODO:
- * - remove "hacks" from memory allocation code and implement nopage()
+ * - remove "mark pages reserved-hacks" from memory allocation code
+ * and implement nopage()
* - check decimation, calculating and reporting image size when
* using decimation
- * - check vino_acquire_input(), vino_set_input() and channel
- * ownership handling
- * - report VINO error-interrupts via ioctls ?
- * - implement picture controls (all implemented?)
- * - use macros for boolean values (?)
- * - implement user mode buffers and overlay (?)
+ * - implement read(), user mode buffers and overlay (?)
*/
#include <linux/init.h>
* debug info.
* Note that the debug output also slows down the driver significantly */
// #define VINO_DEBUG
+// #define VINO_DEBUG_INT
-#define VINO_MODULE_VERSION "0.0.3"
-#define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 3)
+#define VINO_MODULE_VERSION "0.0.5"
+#define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 5)
MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
MODULE_VERSION(VINO_MODULE_VERSION);
MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
MODULE_LICENSE("GPL");
-#define mem_map_reserve(p) set_bit(PG_reserved, &((p)->flags))
-#define mem_map_unreserve(p) clear_bit(PG_reserved, &((p)->flags))
-
#ifdef VINO_DEBUG
#define dprintk(x...) printk("VINO: " x);
#else
#define VINO_MIN_HEIGHT 32
#define VINO_CLIPPING_START_ODD_D1 1
-#define VINO_CLIPPING_START_ODD_PAL 1
-#define VINO_CLIPPING_START_ODD_NTSC 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 2
-#define VINO_CLIPPING_START_EVEN_NTSC 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_PAGE_RATIO (PAGE_SIZE / VINO_PAGE_SIZE)
-#define VINO_FIFO_THRESHOLD_DEFAULT 512
+#define VINO_FIFO_THRESHOLD_DEFAULT 16
-/*#define VINO_FRAMEBUFFER_SIZE (VINO_PAL_WIDTH * VINO_PAL_HEIGHT * 4 \
- + 2 * PAGE_SIZE)*/
#define VINO_FRAMEBUFFER_SIZE ((VINO_PAL_WIDTH \
* VINO_PAL_HEIGHT * 4 \
+ 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
-#define VINO_FRAMEBUFFER_MAX_COUNT 8
+#define VINO_FRAMEBUFFER_COUNT_MAX 8
#define VINO_FRAMEBUFFER_UNUSED 0
#define VINO_FRAMEBUFFER_IN_USE 1
#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_RGB24 4
#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
-/* The following is a special entry that can be used to
+/* The following are special entries that can be used to
* autodetect the norm. */
-#define VINO_DATA_NORM_AUTO 0xff
+#define VINO_DATA_NORM_AUTO 0xfe
+#define VINO_DATA_NORM_AUTO_EXT 0xff
#define VINO_DATA_NORM_COUNT 4
unsigned int head;
unsigned int tail;
- unsigned int data[VINO_FRAMEBUFFER_MAX_COUNT];
+ unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
};
struct vino_framebuffer_queue {
struct vino_framebuffer_fifo in;
struct vino_framebuffer_fifo out;
- struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_MAX_COUNT];
+ struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
spinlock_t queue_lock;
struct semaphore queue_sem;
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;
unsigned int users;
+ struct vino_interrupt_data int_data;
+
/* V4L support */
struct video_device *v4l_device;
};
/* Module parameters */
/*
- * Using vino_pixel_conversion the ARGB32-format pixels supplied
+ * 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
* Use non-zero value to enable conversion.
*/
static int vino_pixel_conversion = 0;
+
module_param_named(pixelconv, vino_pixel_conversion, int, 0);
+
MODULE_PARM_DESC(pixelconv,
"enable pixel conversion (non-zero value enables)");
static const char *vino_v4l_device_name_a = "SGI VINO Channel A";
static const char *vino_v4l_device_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,
+ .std = V4L2_STD_NTSC | V4L2_STD_PAL
+ | V4L2_STD_SECAM,
},{
.name = "S-Video",
- .std = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
+ .std = V4L2_STD_NTSC | V4L2_STD_PAL
+ | V4L2_STD_SECAM,
},{
- .name = "D1 (IndyCam)",
+ .name = "D1/IndyCam",
.std = V4L2_STD_NTSC,
}
};
.colorspace = V4L2_COLORSPACE_SRGB,
},{
.description = "YUV 4:2:2",
- .bpp = 4,
+ .bpp = 2,
.pixelformat = V4L2_PIX_FMT_YUYV, // XXX: swapped?
.colorspace = V4L2_COLORSPACE_SMPTE170M,
- }/*,{
- .description = "24-bit RGB",
- .bpp = 3,
- .pixelformat = V4L2_PIX_FMT_RGB24,
- .colorspace = V4L2_COLORSPACE_SRGB,
- }*/
+ }
};
static const struct vino_data_norm vino_data_norms[] = {
.width = VINO_NTSC_WIDTH,
.height = VINO_NTSC_HEIGHT,
.odd = {
- .top = VINO_CLIPPING_START_ODD_NTSC,
- .left = 0,
+ .top = VINO_CLIPPING_START_ODD_NTSC,
+ .left = 0,
.bottom = VINO_CLIPPING_START_ODD_NTSC
+ VINO_NTSC_HEIGHT / 2 - 1,
- .right = VINO_NTSC_WIDTH,
+ .right = VINO_NTSC_WIDTH,
},
.even = {
- .top = VINO_CLIPPING_START_EVEN_NTSC,
- .left = 0,
+ .top = VINO_CLIPPING_START_EVEN_NTSC,
+ .left = 0,
.bottom = VINO_CLIPPING_START_EVEN_NTSC
+ VINO_NTSC_HEIGHT / 2 - 1,
- .right = VINO_NTSC_WIDTH,
+ .right = VINO_NTSC_WIDTH,
},
},{
.description = "PAL",
.width = VINO_PAL_WIDTH,
.height = VINO_PAL_HEIGHT,
.odd = {
- .top = VINO_CLIPPING_START_ODD_PAL,
- .left = 0,
+ .top = VINO_CLIPPING_START_ODD_PAL,
+ .left = 0,
.bottom = VINO_CLIPPING_START_ODD_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
- .right = VINO_PAL_WIDTH,
+ .right = VINO_PAL_WIDTH,
},
.even = {
- .top = VINO_CLIPPING_START_EVEN_PAL,
- .left = 0,
+ .top = VINO_CLIPPING_START_EVEN_PAL,
+ .left = 0,
.bottom = VINO_CLIPPING_START_EVEN_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
- .right = VINO_PAL_WIDTH,
+ .right = VINO_PAL_WIDTH,
},
},{
.description = "SECAM",
.width = VINO_PAL_WIDTH,
.height = VINO_PAL_HEIGHT,
.odd = {
- .top = VINO_CLIPPING_START_ODD_PAL,
- .left = 0,
+ .top = VINO_CLIPPING_START_ODD_PAL,
+ .left = 0,
.bottom = VINO_CLIPPING_START_ODD_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
- .right = VINO_PAL_WIDTH,
+ .right = VINO_PAL_WIDTH,
},
.even = {
- .top = VINO_CLIPPING_START_EVEN_PAL,
- .left = 0,
+ .top = VINO_CLIPPING_START_EVEN_PAL,
+ .left = 0,
.bottom = VINO_CLIPPING_START_EVEN_PAL
+ VINO_PAL_HEIGHT / 2 - 1,
- .right = VINO_PAL_WIDTH,
+ .right = VINO_PAL_WIDTH,
},
},{
- .description = "NTSC (D1 input)",
+ .description = "NTSC/D1",
.std = V4L2_STD_NTSC,
.fps_min = 6,
.fps_max = 30,
.width = VINO_NTSC_WIDTH,
.height = VINO_NTSC_HEIGHT,
.odd = {
- .top = VINO_CLIPPING_START_ODD_D1,
- .left = 0,
+ .top = VINO_CLIPPING_START_ODD_D1,
+ .left = 0,
.bottom = VINO_CLIPPING_START_ODD_D1
+ VINO_NTSC_HEIGHT / 2 - 1,
- .right = VINO_NTSC_WIDTH,
+ .right = VINO_NTSC_WIDTH,
},
.even = {
- .top = VINO_CLIPPING_START_EVEN_D1,
- .left = 0,
+ .top = VINO_CLIPPING_START_EVEN_D1,
+ .left = 0,
.bottom = VINO_CLIPPING_START_EVEN_D1
+ VINO_NTSC_HEIGHT / 2 - 1,
- .right = VINO_NTSC_WIDTH,
+ .right = VINO_NTSC_WIDTH,
},
}
};
.step = 1,
.default_value = INDYCAM_AGC_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_AGC, 0 },
},{
.id = V4L2_CID_AUTO_WHITE_BALANCE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.step = 1,
.default_value = INDYCAM_AWB_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_AWB, 0 },
},{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_GAIN_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_GAIN, 0 },
},{
.id = V4L2_CID_PRIVATE_BASE,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_RED_SATURATION_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_RED_SATURATION, 0 },
},{
.id = V4L2_CID_PRIVATE_BASE + 1,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_BLUE_SATURATION, 0 },
},{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_RED_BALANCE_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_RED_BALANCE, 0 },
},{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_BLUE_BALANCE, 0 },
},{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_SHUTTER_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_SHUTTER, 0 },
},{
.id = V4L2_CID_GAMMA,
.type = V4L2_CTRL_TYPE_INTEGER,
.step = 1,
.default_value = INDYCAM_GAMMA_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { INDYCAM_CONTROL_GAMMA, 0 },
}
};
-#define VINO_SAA7191_V4L2_CONTROL_COUNT 2
+#define VINO_SAA7191_V4L2_CONTROL_COUNT 9
struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
{
.step = 1,
.default_value = SAA7191_HUE_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { SAA7191_CONTROL_HUE, 0 },
},{
.id = V4L2_CID_PRIVATE_BASE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Luminance Bandpass",
+ .minimum = SAA7191_BANDPASS_MIN,
+ .maximum = SAA7191_BANDPASS_MAX,
+ .step = 1,
+ .default_value = SAA7191_BANDPASS_DEFAULT,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_BANDPASS, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 1,
+ .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,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_BANDPASS_WEIGHT, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 2,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "HF Luminance Coring",
+ .minimum = SAA7191_CORING_MIN,
+ .maximum = SAA7191_CORING_MAX,
+ .step = 1,
+ .default_value = SAA7191_CORING_DEFAULT,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_CORING, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 3,
+ .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,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_FORCE_COLOUR, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 4,
+ .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,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_CHROMA_GAIN, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 5,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "VTR Time Constant",
.minimum = SAA7191_VTRC_MIN,
.step = 1,
.default_value = SAA7191_VTRC_DEFAULT,
.flags = 0,
- .reserved = { 0, 0 },
+ .reserved = { SAA7191_CONTROL_VTRC, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 6,
+ .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,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_LUMA_DELAY, 0 },
+ },{
+ .id = V4L2_CID_PRIVATE_BASE + 7,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Vertical Noise Reduction",
+ .minimum = SAA7191_VNR_MIN,
+ .maximum = SAA7191_VNR_MAX,
+ .step = 1,
+ .default_value = SAA7191_VNR_DEFAULT,
+ .flags = 0,
+ .reserved = { SAA7191_CONTROL_VNR, 0 },
}
};
*/
static int i2c_vino_client_reg(struct i2c_client *client)
{
+ unsigned long flags;
int ret = 0;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch (client->driver->id) {
case I2C_DRIVERID_SAA7191:
if (vino_drvdata->decoder.driver)
default:
ret = -ENODEV;
}
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
static int i2c_vino_client_unreg(struct i2c_client *client)
{
+ unsigned long flags;
int ret = 0;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (client == vino_drvdata->decoder.driver) {
if (vino_drvdata->decoder.owner != VINO_NO_CHANNEL)
ret = -EBUSY;
else
vino_drvdata->camera.driver = NULL;
}
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
dprintk("vino_free_buffer_with_count(): count = %d\n", count);
for (i = 0; i < count; i++) {
- mem_map_unreserve(virt_to_page(fb->desc_table.virtual[i]));
+ ClearPageReserved(virt_to_page(fb->desc_table.virtual[i]));
dma_unmap_single(NULL,
fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
PAGE_SIZE, DMA_FROM_DEVICE);
dma_data_addr + VINO_PAGE_SIZE * j;
}
- mem_map_reserve(virt_to_page(fb->desc_table.virtual[i]));
+ SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
}
/* page_count needs to be set anyway, because the descriptor table has
dma_data_addr + VINO_PAGE_SIZE * j;
}
- mem_map_reserve(virt_to_page(fb->desc_table.virtual[i]));
+ SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
}
/* page_count needs to be set anyway, because the descriptor table has
/* Framebuffer fifo functions (need to be locked externally) */
-static void vino_fifo_init(struct vino_framebuffer_fifo *f,
+static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
unsigned int length)
{
f->length = 0;
f->head = 0;
f->tail = 0;
- if (length > VINO_FRAMEBUFFER_MAX_COUNT)
- length = VINO_FRAMEBUFFER_MAX_COUNT;
+ if (length > VINO_FRAMEBUFFER_COUNT_MAX)
+ length = VINO_FRAMEBUFFER_COUNT_MAX;
f->length = length;
}
/* returns true/false */
-static int vino_fifo_has_id(struct vino_framebuffer_fifo *f, unsigned int id)
+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 int vino_fifo_full(struct vino_framebuffer_fifo *f)
+static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
{
return (f->used == f->length);
}
+#endif
-static unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
+static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
{
return f->used;
}
down(&q->queue_sem);
- if (*length > VINO_FRAMEBUFFER_MAX_COUNT)
- *length = VINO_FRAMEBUFFER_MAX_COUNT;
+ if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
+ *length = VINO_FRAMEBUFFER_COUNT_MAX;
q->length = 0;
return ret;
}
+#if 0
static int vino_queue_get_total(struct vino_framebuffer_queue *q,
unsigned int *total)
{
return ret;
}
+#endif
static struct vino_framebuffer *vino_queue_peek(struct
vino_framebuffer_queue *q,
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_default_clipping(struct vino_channel_settings *vcs)
+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);
if (d < 1) {
d = 1;
- }
- if (d > 8) {
+ } else if (d > 8) {
d = 8;
}
}
/* execute with input_lock locked */
-static void vino_reset_scaling(struct vino_channel_settings *vcs)
+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_default_framerate(struct vino_channel_settings *vcs)
+static inline void vino_set_default_framerate(struct
+ vino_channel_settings *vcs)
{
vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
}
* 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;
VINO_CLIP_EVEN(norm->even.top +
vcs->clipping.bottom / 2 - 1) |
VINO_CLIP_X(vcs->clipping.right);
- /* FIXME: end-of-field bug workaround
- VINO_CLIP_X(VINO_PAL_WIDTH);
- */
/* set the size of actual content in the buffer (DECIMATION !) */
fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
}
/* (execute only with vino_lock locked) */
-static void vino_dma_start(struct vino_channel_settings *vcs)
+static inline void vino_dma_start(struct vino_channel_settings *vcs)
{
u32 ctrl = vino->control;
}
/* (execute only with vino_lock locked) */
-static void vino_dma_stop(struct vino_channel_settings *vcs)
+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");
}
struct vino_framebuffer *fb;
unsigned int incoming, id;
int err = 0;
- unsigned long flags, flags2;
+ unsigned long flags;
dprintk("vino_capture_next():\n");
goto out;
}
- spin_lock_irqsave(&fb->state_lock, flags2);
- fb->state = VINO_FRAMEBUFFER_UNUSED;
- spin_unlock_irqrestore(&fb->state_lock, flags2);
-
if (start) {
vcs->capturing = 1;
}
return err;
}
-static int vino_is_capturing(struct vino_channel_settings *vcs)
+static inline int vino_is_capturing(struct vino_channel_settings *vcs)
{
int ret;
unsigned long flags;
dprintk("vino_capture_stop():\n");
spin_lock_irqsave(&vcs->capture_lock, flags);
+
/* unset capturing to stop queue processing */
vcs->capturing = 0;
spin_unlock_irqrestore(&vcs->capture_lock, flags);
}
+#if 0
static int vino_capture_failed(struct vino_channel_settings *vcs)
{
struct vino_framebuffer *fb;
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,
- unsigned int fc)
+static void vino_frame_done(struct vino_channel_settings *vcs)
{
struct vino_framebuffer *fb;
unsigned long flags;
}
spin_unlock_irqrestore(&vcs->capture_lock, flags);
- fb->frame_counter = fc;
- do_gettimeofday(&fb->timestamp);
+ 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)
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, struct pt_regs *regs)
{
- u32 intr;
+ u32 ctrl, intr;
unsigned int fc_a, fc_b;
- int done_a = 0;
- int done_b = 0;
+ 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);
- intr = vino->intr_status;
- fc_a = vino->a.field_counter / 2;
- fc_b = vino->b.field_counter / 2;
-
- // TODO: handle error-interrupts in some special way ?
-
- if (intr & VINO_INTSTAT_A) {
- if (intr & VINO_INTSTAT_A_EOF) {
- vino_drvdata->a.field++;
- if (vino_drvdata->a.field > 1) {
+ 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;
- done_a = 1;
+ skip_a = 1;
+ dprintk("channel A error interrupt: %04x\n",
+ intr);
}
- dprintk("intr: channel A end-of-field interrupt: "
- "%04x\n", intr);
- } else {
- vino_dma_stop(&vino_drvdata->a);
- vino_clear_interrupt(&vino_drvdata->a);
- done_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) {
+
+ 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;
- done_b = 1;
+ skip_b = 1;
+ dprintk("channel B error interrupt: %04x\n",
+ intr);
}
- dprintk("intr: channel B end-of-field interrupt: "
- "%04x\n", intr);
- } else {
- vino_dma_stop(&vino_drvdata->b);
- vino_clear_interrupt(&vino_drvdata->b);
- done_b = 1;
- dprintk("channel B error interrupt: %04x\n", intr);
}
- }
- /* always remember to clear interrupt status */
- vino->intr_status = ~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);
+ spin_unlock(&vino_drvdata->vino_lock);
- if (done_a) {
- vino_frame_done(&vino_drvdata->a, fc_a);
- dprintk("channel A frame done, interrupt: %d\n", intr);
- }
- if (done_b) {
- vino_frame_done(&vino_drvdata->b, fc_b);
- dprintk("channel B frame done, interrupt: %d\n", intr);
+ if ((!handled_a) && (done_a || skip_a)) {
+ if (!skip_a) {
+ do_gettimeofday(&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) {
+ do_gettimeofday(&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;
}
}
}
-static int vino_get_saa7191_norm(int norm)
+static int vino_get_saa7191_norm(unsigned int data_norm)
{
- switch (norm) {
+ switch (data_norm) {
case VINO_DATA_NORM_AUTO:
return SAA7191_NORM_AUTO;
+ case VINO_DATA_NORM_AUTO_EXT:
+ return SAA7191_NORM_AUTO_EXT;
case VINO_DATA_NORM_PAL:
return SAA7191_NORM_PAL;
case VINO_DATA_NORM_NTSC:
}
}
+static int vino_get_from_saa7191_norm(int saa7191_norm)
+{
+ switch (saa7191_norm) {
+ case SAA7191_NORM_PAL:
+ return VINO_DATA_NORM_PAL;
+ case SAA7191_NORM_NTSC:
+ return VINO_DATA_NORM_NTSC;
+ case SAA7191_NORM_SECAM:
+ return VINO_DATA_NORM_SECAM;
+ default:
+ printk(KERN_ERR "VINO: vino_get_from_saa7191_norm(): "
+ "invalid norm!\n");
+ return VINO_DATA_NORM_NONE;
+ }
+}
+
+static int vino_saa7191_set_norm(unsigned int *data_norm)
+{
+ int saa7191_norm, new_data_norm;
+ int err = 0;
+
+ saa7191_norm = vino_get_saa7191_norm(*data_norm);
+
+ err = i2c_decoder_command(DECODER_SAA7191_SET_NORM,
+ &saa7191_norm);
+ if (err)
+ goto out;
+
+ if ((*data_norm == VINO_DATA_NORM_AUTO)
+ || (*data_norm == VINO_DATA_NORM_AUTO_EXT)) {
+ struct saa7191_status status;
+
+ err = i2c_decoder_command(DECODER_SAA7191_GET_STATUS,
+ &status);
+ if (err)
+ goto out;
+
+ new_data_norm =
+ vino_get_from_saa7191_norm(status.norm);
+ if (new_data_norm == VINO_DATA_NORM_NONE) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ *data_norm = (unsigned int)new_data_norm;
+ }
+
+out:
+ return err;
+}
+
/* execute with input_lock locked */
static int vino_is_input_owner(struct vino_channel_settings *vcs)
{
static int vino_acquire_input(struct vino_channel_settings *vcs)
{
+ unsigned long flags;
int ret = 0;
dprintk("vino_acquire_input():\n");
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
/* First try D1 and then SAA7191 */
if (vino_drvdata->camera.driver
vcs->data_norm = VINO_DATA_NORM_D1;
} else if (vino_drvdata->decoder.driver
&& (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
+ int input, data_norm;
int saa7191_input;
- int saa7191_norm;
if (i2c_use_client(vino_drvdata->decoder.driver)) {
ret = -ENODEV;
goto out;
}
- vino_drvdata->decoder.owner = vcs->channel;
- vcs->input = VINO_INPUT_COMPOSITE;
- vcs->data_norm = VINO_DATA_NORM_PAL;
+ input = VINO_INPUT_COMPOSITE;
+
+ saa7191_input = vino_get_saa7191_input(input);
+ ret = i2c_decoder_command(DECODER_SET_INPUT,
+ &saa7191_input);
+ if (ret) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
- saa7191_input = vino_get_saa7191_input(vcs->input);
- i2c_decoder_command(DECODER_SET_INPUT, &saa7191_input);
+ /* Don't hold spinlocks while auto-detecting norm
+ * as it may take a while... */
- saa7191_norm = vino_get_saa7191_norm(vcs->data_norm);
- i2c_decoder_command(DECODER_SAA7191_SET_NORM, &saa7191_norm);
+ data_norm = VINO_DATA_NORM_AUTO_EXT;
+
+ ret = vino_saa7191_set_norm(&data_norm);
+ if ((ret == -EBUSY) || (ret == -EAGAIN)) {
+ data_norm = VINO_DATA_NORM_PAL;
+ ret = vino_saa7191_set_norm(&data_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;
goto out;
}
- if (vino_is_input_owner(vcs)) {
- vino_set_default_clipping(vcs);
- vino_set_default_framerate(vcs);
- }
+ 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(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
{
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(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (vcs->input == input)
goto out;
- switch(input) {
+ switch (input) {
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO:
if (!vino_drvdata->decoder.driver) {
}
if (vino_drvdata->decoder.owner == vcs->channel) {
+ int data_norm;
int saa7191_input;
- int saa7191_norm;
- vcs->input = input;
- vcs->data_norm = VINO_DATA_NORM_PAL;
+ saa7191_input = vino_get_saa7191_input(input);
+ ret = i2c_decoder_command(DECODER_SET_INPUT,
+ &saa7191_input);
+ 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... */
+
+ data_norm = VINO_DATA_NORM_AUTO_EXT;
+
+ ret = vino_saa7191_set_norm(&data_norm);
+ if ((ret == -EBUSY) || (ret == -EAGAIN)) {
+ data_norm = VINO_DATA_NORM_PAL;
+ ret = vino_saa7191_set_norm(&data_norm);
+ }
- saa7191_input = vino_get_saa7191_input(vcs->input);
- i2c_decoder_command(DECODER_SET_INPUT, &saa7191_input);
- saa7191_norm = vino_get_saa7191_norm(vcs->data_norm);
- i2c_decoder_command(DECODER_SAA7191_SET_NORM,
- &saa7191_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 (vcs2->input != input) {
+ if (input != vcs2->input) {
ret = -EBUSY;
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(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
{
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(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
/* Release ownership of the channel
* and if the other channel takes input from
}
vcs->input = VINO_INPUT_NONE;
- spin_unlock(&vino_drvdata->input_lock);
+ 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 int data_norm,
+ unsigned long *flags)
{
- int saa7191_norm;
+ 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)
+ if ((data_norm != VINO_DATA_NORM_D1)
+ && (data_norm != VINO_DATA_NORM_AUTO)
+ && (data_norm != VINO_DATA_NORM_AUTO_EXT))
return -EINVAL;
break;
case VINO_INPUT_COMPOSITE:
- case VINO_INPUT_SVIDEO:
+ case VINO_INPUT_SVIDEO: {
+ if ((data_norm != VINO_DATA_NORM_PAL)
+ && (data_norm != VINO_DATA_NORM_NTSC)
+ && (data_norm != VINO_DATA_NORM_SECAM)
+ && (data_norm != VINO_DATA_NORM_AUTO)
+ && (data_norm != VINO_DATA_NORM_AUTO_EXT))
+ return -EINVAL;
- saa7191_norm = vino_get_saa7191_norm(data_norm);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
+
+ /* Don't hold spinlocks while setting norm
+ * as it may take a while... */
+
+ err = vino_saa7191_set_norm(&data_norm);
+
+ spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
+
+ if (err)
+ goto out;
- i2c_decoder_command(DECODER_SAA7191_SET_NORM, &saa7191_norm);
vcs->data_norm = data_norm;
+
+ vino_set_default_clipping(vcs);
+ vino_set_default_scaling(vcs);
+ vino_set_default_framerate(vcs);
break;
+ }
default:
return -EINVAL;
}
- return 0;
+out:
+ return err;
}
/* V4L2 helper functions */
static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
{
int data_norm = VINO_DATA_NORM_NONE;
+ unsigned long flags;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch(vcs->input) {
case VINO_INPUT_COMPOSITE:
case VINO_INPUT_SVIDEO:
}
break;
}
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return data_norm;
}
static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
{
int input = VINO_INPUT_NONE;
+ unsigned long flags;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
switch (index) {
case 0:
break;
}
}
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return input;
}
}
static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
- struct v4l2_input *i)
+ unsigned int *i)
{
__u32 index;
int input;
+ unsigned long flags;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
input = vcs->input;
index = vino_find_input_index(vcs);
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
dprintk("input = %d\n", input);
return -EINVAL;
}
- memset(i, 0, sizeof(struct v4l2_input));
-
- i->index = index;
- i->type = V4L2_INPUT_TYPE_CAMERA;
- i->std = vino_inputs[input].std;
- strcpy(i->name, vino_inputs[input].name);
+ *i = index;
return 0;
}
static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
- struct v4l2_input *i)
+ unsigned int *i)
{
int input;
- dprintk("requested input = %d\n", i->index);
+ dprintk("requested input = %d\n", *i);
- input = vino_enum_input(vcs, i->index);
+ input = vino_enum_input(vcs, *i);
if (input == VINO_INPUT_NONE)
return -EINVAL;
struct v4l2_standard *s)
{
int index = s->index;
- int data_norm = vino_enum_data_norm(vcs, index);
+ int data_norm;
+
+ data_norm = vino_enum_data_norm(vcs, index);
dprintk("standard index = %d\n", index);
if (data_norm == VINO_DATA_NORM_NONE)
return 0;
}
+static int vino_v4l2_querystd(struct vino_channel_settings *vcs,
+ v4l2_std_id *std)
+{
+ 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: {
+ struct saa7191_status status;
+
+ i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
+
+ if (status.signal) {
+ if (status.signal_60hz) {
+ *std = V4L2_STD_NTSC;
+ } else {
+ *std = V4L2_STD_PAL | V4L2_STD_SECAM;
+ }
+ } else {
+ *std = vino_inputs[vcs->input].std;
+ }
+ break;
+ }
+ default:
+ err = -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
+
+ return err;
+}
+
static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
v4l2_std_id *std)
{
- spin_lock(&vino_drvdata->input_lock);
- dprintk("current standard = %d\n", vcs->data_norm);
+ unsigned long flags;
+
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
+
*std = vino_data_norms[vcs->data_norm].std;
- spin_unlock(&vino_drvdata->input_lock);
+ dprintk("current standard = %d\n", vcs->data_norm);
+
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return 0;
}
static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
v4l2_std_id *std)
{
+ unsigned long flags;
int ret = 0;
- spin_lock(&vino_drvdata->input_lock);
+ 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 (vino_is_input_owner(vcs)
- && (vino_inputs[vcs->input].std & (*std))) {
+ if ((*std) & vino_inputs[vcs->input].std) {
dprintk("standard accepted\n");
/* change the video norm for SAA7191
if (vcs->input == VINO_INPUT_D1)
goto out;
- if ((*std) & V4L2_STD_PAL) {
- vino_set_data_norm(vcs, VINO_DATA_NORM_PAL);
- vcs->data_norm = VINO_DATA_NORM_PAL;
+ if (((*std) & V4L2_STD_PAL)
+ && ((*std) & V4L2_STD_NTSC)
+ && ((*std) & V4L2_STD_SECAM)) {
+ ret = vino_set_data_norm(vcs, VINO_DATA_NORM_AUTO_EXT,
+ &flags);
+ } else if ((*std) & V4L2_STD_PAL) {
+ ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
+ &flags);
} else if ((*std) & V4L2_STD_NTSC) {
- vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC);
- vcs->data_norm = VINO_DATA_NORM_NTSC;
+ ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
+ &flags);
} else if ((*std) & V4L2_STD_SECAM) {
- vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM);
- vcs->data_norm = VINO_DATA_NORM_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(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return ret;
}
struct v4l2_format *f)
{
struct vino_channel_settings tempvcs;
+ unsigned long flags;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
dprintk("requested: w = %d, h = %d\n",
pf->width, pf->height);
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
- spin_unlock(&vino_drvdata->input_lock);
+ 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_RGB32;
+ tempvcs.data_format = VINO_DATA_FMT_GREY;
pf->pixelformat =
vino_data_formats[tempvcs.data_format].
pixelformat;
static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
struct v4l2_format *f)
{
+ unsigned long flags;
+
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
struct v4l2_pix_format *pf = &f->fmt.pix;
- spin_lock(&vino_drvdata->input_lock);
+
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
pf->width = (vcs->clipping.right - vcs->clipping.left) /
vcs->decimation;
pf->priv = 0;
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
break;
}
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
struct v4l2_format *f)
{
int data_format;
+ unsigned long flags;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
struct v4l2_pix_format *pf = &f->fmt.pix;
- spin_lock(&vino_drvdata->input_lock);
- if (!vino_is_input_owner(vcs)) {
- spin_unlock(&vino_drvdata->input_lock);
- return -EINVAL;
- }
+ 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_RGB32;
+ vcs->data_format = VINO_DATA_FMT_GREY;
pf->pixelformat =
vino_data_formats[vcs->data_format].
pixelformat;
pf->priv = 0;
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
break;
}
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
struct v4l2_cropcap *ccap)
{
const struct vino_data_norm *norm;
+ unsigned long flags;
switch (ccap->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
+
norm = &vino_data_norms[vcs->data_norm];
- spin_unlock(&vino_drvdata->input_lock);
+
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
ccap->bounds.left = 0;
ccap->bounds.top = 0;
static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
struct v4l2_crop *c)
{
+ unsigned long flags;
+
switch (c->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- spin_lock(&vino_drvdata->input_lock);
+ 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(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
break;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
default:
static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
struct v4l2_crop *c)
{
+ unsigned long flags;
+
switch (c->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
- if (!vino_is_input_owner(vcs)) {
- spin_unlock(&vino_drvdata->input_lock);
- return -EINVAL;
- }
vino_set_clipping(vcs, c->c.left, c->c.top,
c->c.width, c->c.height);
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
break;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
default:
static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
struct v4l2_streamparm *sp)
{
+ unsigned long flags;
+
switch (sp->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
struct v4l2_captureparm *cp = &sp->parm.capture;
cp->capability = V4L2_CAP_TIMEPERFRAME;
cp->timeperframe.numerator = 1;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
+
cp->timeperframe.denominator = vcs->fps;
- spin_unlock(&vino_drvdata->input_lock);
+
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
// TODO: cp->readbuffers = xxx;
break;
static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
struct v4l2_streamparm *sp)
{
+ unsigned long flags;
+
switch (sp->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
struct v4l2_captureparm *cp = &sp->parm.capture;
- spin_lock(&vino_drvdata->input_lock);
- if (!vino_is_input_owner(vcs)) {
- spin_unlock(&vino_drvdata->input_lock);
- return -EINVAL;
- }
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
if ((cp->timeperframe.numerator == 0) ||
(cp->timeperframe.denominator == 0)) {
vino_set_framerate(vcs, cp->timeperframe.denominator /
cp->timeperframe.numerator);
}
- spin_unlock(&vino_drvdata->input_lock);
+
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
// TODO: set buffers according to cp->readbuffers
break;
return -EINVAL;
}
- if (vino_is_capturing(vcs)) {
- dprintk("busy, capturing\n");
- return -EBUSY;
- }
-
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);
}
err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
if (err) {
dprintk("vino_queue_get_incoming() failed\n");
- return -EIO;
+ return -EINVAL;
}
err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
if (err) {
dprintk("vino_queue_get_outgoing() failed\n");
- return -EIO;
+ return -EINVAL;
}
dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
if (err) {
err = vino_wait_for_frame(vcs);
if (err) {
- /* interrupted */
- vino_capture_failed(vcs);
+ /* interrupted or
+ * no frames captured because
+ * of frame skipping */
+ // vino_capture_failed(vcs);
return -EIO;
}
}
}
err = vino_check_buffer(vcs, fb);
+
+ vino_v4l2_get_buffer_status(vcs, fb, b);
+
if (err)
return -EIO;
- vino_v4l2_get_buffer_status(vcs, fb, b);
break;
}
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
if (!vcs->streaming)
return 0;
- vino_capture_stop(vcs);
vcs->streaming = 0;
+ vino_capture_stop(vcs);
return 0;
}
static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
struct v4l2_queryctrl *queryctrl)
{
+ unsigned long flags;
int i;
int err = 0;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch (vcs->input) {
case VINO_INPUT_D1:
memcpy(queryctrl,
&vino_indycam_v4l2_controls[i],
sizeof(struct v4l2_queryctrl));
+ queryctrl->reserved[0] = 0;
goto found;
}
}
memcpy(queryctrl,
&vino_saa7191_v4l2_controls[i],
sizeof(struct v4l2_queryctrl));
+ queryctrl->reserved[0] = 0;
goto found;
}
}
}
found:
- spin_unlock(&vino_drvdata->input_lock);
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
struct v4l2_control *control)
{
- struct indycam_control indycam_ctrl;
- struct saa7191_control saa7191_ctrl;
+ unsigned long flags;
+ int i;
int err = 0;
- spin_lock(&vino_drvdata->input_lock);
+ spin_lock_irqsave(&vino_drvdata->input_lock, flags);
switch (vcs->input) {
- case VINO_INPUT_D1:
- i2c_camera_command(DECODER_INDYCAM_GET_CONTROLS,
- &indycam_ctrl);
+ case VINO_INPUT_D1: {
+ struct indycam_control indycam_ctrl;
- switch(control->id) {
- case V4L2_CID_AUTOGAIN:
- control->value = indycam_ctrl.agc;
- break;
- case V4L2_CID_AUTO_WHITE_BALANCE:
- control->value = indycam_ctrl.awb;
- break;
- case V4L2_CID_GAIN:
- control->value = indycam_ctrl.gain;
- break;
- case V4L2_CID_PRIVATE_BASE:
- control->value = indycam_ctrl.red_saturation;
- break;
- case V4L2_CID_PRIVATE_BASE + 1:
- control->value = indycam_ctrl.blue_saturation;
- break;
- case V4L2_CID_RED_BALANCE:
- control->value = indycam_ctrl.red_balance;
- break;
- case V4L2_CID_BLUE_BALANCE:
- control->value = indycam_ctrl.blue_balance;
- break;
- case V4L2_CID_EXPOSURE:
- control->value = indycam_ctrl.shutter;
- break;
- case V4L2_CID_GAMMA:
- control->value = indycam_ctrl.gamma;
- break;
- default:
+ for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
+ if (vino_indycam_v4l2_controls[i].id ==
+ control->id) {
+ goto found1;
+ }
+ }
+
+ err = -EINVAL;
+ goto out;
+
+found1:
+ indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
+
+ err = i2c_camera_command(DECODER_INDYCAM_GET_CONTROL,
+ &indycam_ctrl);
+ if (err) {
err = -EINVAL;
+ goto out;
}
+
+ control->value = indycam_ctrl.value;
break;
+ }
case VINO_INPUT_COMPOSITE:
- case VINO_INPUT_SVIDEO:
- i2c_decoder_command(DECODER_SAA7191_GET_CONTROLS,
- &saa7191_ctrl);
+ case VINO_INPUT_SVIDEO: {
+ struct saa7191_control saa7191_ctrl;
- switch(control->id) {
- case V4L2_CID_HUE:
- control->value = saa7191_ctrl.hue;
- break;
- case V4L2_CID_PRIVATE_BASE:
- control->value = saa7191_ctrl.vtrc;
- break;
- default:
+ for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
+ if (vino_saa7191_v4l2_controls[i].id ==
+ control->id) {
+ goto found2;
+ }
+ }
+
+ err = -EINVAL;
+ goto out;
+
+found2:
+ saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
+
+ err = i2c_decoder_command(DECODER_SAA7191_GET_CONTROL,
+ &saa7191_ctrl);
+ if (err) {
err = -EINVAL;
+ goto out;
}
+
+ control->value = saa7191_ctrl.value;
break;
+ }
default:
err = -EINVAL;
}
- spin_unlock(&vino_drvdata->input_lock);
+out:
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
struct v4l2_control *control)
{
- struct indycam_control indycam_ctrl;
- struct saa7191_control saa7191_ctrl;
+ unsigned long flags;
int i;
int err = 0;
- spin_lock(&vino_drvdata->input_lock);
+ 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:
+ case VINO_INPUT_D1: {
+ struct indycam_control indycam_ctrl;
+
for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
if (vino_indycam_v4l2_controls[i].id ==
control->id) {
&& (control->value <=
vino_indycam_v4l2_controls[i].
maximum)) {
- goto ok1;
+ goto found1;
} else {
err = -ERANGE;
- goto error;
+ goto out;
}
}
}
+
err = -EINVAL;
- goto error;
+ goto out;
-ok1:
- indycam_ctrl.agc = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.awb = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.shutter = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.gain = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.red_balance = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.blue_balance = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.red_saturation = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.blue_saturation = INDYCAM_VALUE_UNCHANGED;
- indycam_ctrl.gamma = INDYCAM_VALUE_UNCHANGED;
-
- switch(control->id) {
- case V4L2_CID_AUTOGAIN:
- indycam_ctrl.agc = control->value;
- break;
- case V4L2_CID_AUTO_WHITE_BALANCE:
- indycam_ctrl.awb = control->value;
- break;
- case V4L2_CID_GAIN:
- indycam_ctrl.gain = control->value;
- break;
- case V4L2_CID_PRIVATE_BASE:
- indycam_ctrl.red_saturation = control->value;
- break;
- case V4L2_CID_PRIVATE_BASE + 1:
- indycam_ctrl.blue_saturation = control->value;
- break;
- case V4L2_CID_RED_BALANCE:
- indycam_ctrl.red_balance = control->value;
- break;
- case V4L2_CID_BLUE_BALANCE:
- indycam_ctrl.blue_balance = control->value;
- break;
- case V4L2_CID_EXPOSURE:
- indycam_ctrl.shutter = control->value;
- break;
- case V4L2_CID_GAMMA:
- indycam_ctrl.gamma = control->value;
- break;
- default:
- err = -EINVAL;
- }
+found1:
+ indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
+ indycam_ctrl.value = control->value;
- if (!err)
- i2c_camera_command(DECODER_INDYCAM_SET_CONTROLS,
- &indycam_ctrl);
+ err = i2c_camera_command(DECODER_INDYCAM_SET_CONTROL,
+ &indycam_ctrl);
+ if (err)
+ err = -EINVAL;
break;
+ }
case VINO_INPUT_COMPOSITE:
- case VINO_INPUT_SVIDEO:
+ case VINO_INPUT_SVIDEO: {
+ struct saa7191_control saa7191_ctrl;
+
for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
if (vino_saa7191_v4l2_controls[i].id ==
control->id) {
&& (control->value <=
vino_saa7191_v4l2_controls[i].
maximum)) {
- goto ok2;
+ goto found2;
} else {
err = -ERANGE;
- goto error;
+ goto out;
}
}
}
err = -EINVAL;
- goto error;
-
-ok2:
- saa7191_ctrl.hue = SAA7191_VALUE_UNCHANGED;
- saa7191_ctrl.vtrc = SAA7191_VALUE_UNCHANGED;
+ goto out;
- switch(control->id) {
- case V4L2_CID_HUE:
- saa7191_ctrl.hue = control->value;
- break;
- case V4L2_CID_PRIVATE_BASE:
- saa7191_ctrl.vtrc = control->value;
- break;
- default:
- err = -EINVAL;
- }
+found2:
+ saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
+ saa7191_ctrl.value = control->value;
- if (!err)
- i2c_decoder_command(DECODER_SAA7191_SET_CONTROLS,
- &saa7191_ctrl);
+ err = i2c_decoder_command(DECODER_SAA7191_SET_CONTROL,
+ &saa7191_ctrl);
+ if (err)
+ err = -EINVAL;
break;
+ }
default:
err = -EINVAL;
}
-error:
- spin_unlock(&vino_drvdata->input_lock);
+out:
+ spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
return err;
}
over:
dprintk("poll(): data %savailable\n",
(outgoing > 0) ? "" : "not ");
- if (outgoing > 0) {
+
+ if (outgoing > 0)
ret = POLLIN | POLLRDNORM;
- }
error:
struct video_device *dev = video_devdata(file);
struct vino_channel_settings *vcs = video_get_drvdata(dev);
+#ifdef VINO_DEBUG
switch (_IOC_TYPE(cmd)) {
case 'v':
dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
default:
dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
}
+#endif
switch (cmd) {
- /* TODO: V4L1 interface (use compatibility layer?) */
/* V4L2 interface */
case VIDIOC_QUERYCAP: {
vino_v4l2_querycap(arg);
case VIDIOC_ENUMSTD: {
return vino_v4l2_enumstd(vcs, arg);
}
+ case VIDIOC_QUERYSTD: {
+ return vino_v4l2_querystd(vcs, arg);
+ }
case VIDIOC_G_STD: {
return vino_v4l2_g_std(vcs, arg);
}
return -ENODEV;
}
- printk(KERN_INFO "VINO with chip ID %ld, revision %ld found\n",
- VINO_ID_VALUE(rev_id), VINO_REV_NUM(rev_id));
+ printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
return 0;
}
projects / linux-2.6 / blobdiff