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authorLinus Torvalds <torvalds@linux-foundation.org>2011-11-04 07:58:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-04 07:58:25 -0700
commit1046a2c428bedd64c960dcfd0c57cc69a82fea2f (patch)
treed34b83e0ac61b51305cece031f7ff49579e3fe76 /include
parent46e85f5f1c2a1d106c1ec0fa2a06280276b8e052 (diff)
parentb3f4e1eba45eda5d1213810ef3bc53e5247df2df (diff)
downloadlinux-1046a2c428bedd64c960dcfd0c57cc69a82fea2f.tar.bz2
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (144 commits) [media] saa7134.h: Suppress compiler warnings when CONFIG_VIDEO_SAA7134_RC is not set [media] it913x [VER 1.07] Support for single ITE 9135 devices [media] Support for Terratec G1 [media] cx25821: off by one in cx25821_vidioc_s_input() [media] media: tea5764: reconcile Kconfig symbol and macro [media] omap_vout: Add poll() support [media] omap3isp: preview: Add crop support on the sink pad [media] omap3isp: preview: Rename min/max input/output sizes defines [media] omap3isp: preview: Remove horizontal averager support [media] omap3isp: Report the ISP revision through the media controller API [media] omap3isp: ccdc: remove redundant operation [media] omap3isp: Fix memory leaks in initialization error paths [media] omap3isp: Add missing mutex_destroy() calls [media] omap3isp: Move *_init_entities() functions to the init/cleanup section [media] omap3isp: Move media_entity_cleanup() from unregister() to cleanup() [media] MFC: Change MFC firmware binary name [media] vb2: add vb2_get_unmapped_area in vb2 core [media] v4l: Add v4l2 subdev driver for S5K6AAFX sensor [media] v4l: Add AUTO option for the V4L2_CID_POWER_LINE_FREQUENCY control [media] media: ov6650: stylistic improvements ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/videodev2.h27
-rw-r--r--include/media/ov772x.h26
-rw-r--r--include/media/s5k6aa.h51
-rw-r--r--include/media/soc_camera.h104
-rw-r--r--include/media/soc_camera_platform.h4
-rw-r--r--include/media/soc_mediabus.h2
-rw-r--r--include/media/v4l2-ioctl.h2
-rw-r--r--include/media/v4l2-subdev.h5
-rw-r--r--include/media/videobuf2-core.h50
9 files changed, 166 insertions, 105 deletions
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 225560c1a10f..4b752d5ee80e 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -653,6 +653,10 @@ struct v4l2_buffer {
#define V4L2_BUF_FLAG_ERROR 0x0040
#define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */
#define V4L2_BUF_FLAG_INPUT 0x0200 /* input field is valid */
+#define V4L2_BUF_FLAG_PREPARED 0x0400 /* Buffer is prepared for queuing */
+/* Cache handling flags */
+#define V4L2_BUF_FLAG_NO_CACHE_INVALIDATE 0x0800
+#define V4L2_BUF_FLAG_NO_CACHE_CLEAN 0x1000
/*
* O V E R L A Y P R E V I E W
@@ -1165,6 +1169,7 @@ enum v4l2_power_line_frequency {
V4L2_CID_POWER_LINE_FREQUENCY_DISABLED = 0,
V4L2_CID_POWER_LINE_FREQUENCY_50HZ = 1,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ = 2,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO = 3,
};
#define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25)
#define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26)
@@ -2138,6 +2143,23 @@ struct v4l2_dbg_chip_ident {
__u32 revision; /* chip revision, chip specific */
} __attribute__ ((packed));
+/**
+ * struct v4l2_create_buffers - VIDIOC_CREATE_BUFS argument
+ * @index: on return, index of the first created buffer
+ * @count: entry: number of requested buffers,
+ * return: number of created buffers
+ * @memory: buffer memory type
+ * @format: frame format, for which buffers are requested
+ * @reserved: future extensions
+ */
+struct v4l2_create_buffers {
+ __u32 index;
+ __u32 count;
+ enum v4l2_memory memory;
+ struct v4l2_format format;
+ __u32 reserved[8];
+};
+
/*
* I O C T L C O D E S F O R V I D E O D E V I C E S
*
@@ -2228,6 +2250,11 @@ struct v4l2_dbg_chip_ident {
#define VIDIOC_SUBSCRIBE_EVENT _IOW('V', 90, struct v4l2_event_subscription)
#define VIDIOC_UNSUBSCRIBE_EVENT _IOW('V', 91, struct v4l2_event_subscription)
+/* Experimental, the below two ioctls may change over the next couple of kernel
+ versions */
+#define VIDIOC_CREATE_BUFS _IOWR('V', 92, struct v4l2_create_buffers)
+#define VIDIOC_PREPARE_BUF _IOWR('V', 93, struct v4l2_buffer)
+
/* Reminder: when adding new ioctls please add support for them to
drivers/media/video/v4l2-compat-ioctl32.c as well! */
diff --git a/include/media/ov772x.h b/include/media/ov772x.h
index 548bf1155c83..00dbb7c4feae 100644
--- a/include/media/ov772x.h
+++ b/include/media/ov772x.h
@@ -12,12 +12,9 @@
#ifndef __OV772X_H__
#define __OV772X_H__
-#include <media/soc_camera.h>
-
/* for flags */
#define OV772X_FLAG_VFLIP (1 << 0) /* Vertical flip image */
#define OV772X_FLAG_HFLIP (1 << 1) /* Horizontal flip image */
-#define OV772X_FLAG_8BIT (1 << 2) /* default 10 bit */
/*
* for Edge ctrl
@@ -32,22 +29,23 @@ struct ov772x_edge_ctrl {
unsigned char lower;
};
-#define OV772X_MANUAL_EDGE_CTRL 0x80 /* un-used bit of strength */
-#define EDGE_STRENGTH_MASK 0x1F
-#define EDGE_THRESHOLD_MASK 0x0F
-#define EDGE_UPPER_MASK 0xFF
-#define EDGE_LOWER_MASK 0xFF
+#define OV772X_MANUAL_EDGE_CTRL 0x80 /* un-used bit of strength */
+#define OV772X_EDGE_STRENGTH_MASK 0x1F
+#define OV772X_EDGE_THRESHOLD_MASK 0x0F
+#define OV772X_EDGE_UPPER_MASK 0xFF
+#define OV772X_EDGE_LOWER_MASK 0xFF
#define OV772X_AUTO_EDGECTRL(u, l) \
{ \
- .upper = (u & EDGE_UPPER_MASK), \
- .lower = (l & EDGE_LOWER_MASK), \
+ .upper = (u & OV772X_EDGE_UPPER_MASK), \
+ .lower = (l & OV772X_EDGE_LOWER_MASK), \
}
-#define OV772X_MANUAL_EDGECTRL(s, t) \
-{ \
- .strength = (s & EDGE_STRENGTH_MASK) | OV772X_MANUAL_EDGE_CTRL,\
- .threshold = (t & EDGE_THRESHOLD_MASK), \
+#define OV772X_MANUAL_EDGECTRL(s, t) \
+{ \
+ .strength = (s & OV772X_EDGE_STRENGTH_MASK) | \
+ OV772X_MANUAL_EDGE_CTRL, \
+ .threshold = (t & OV772X_EDGE_THRESHOLD_MASK), \
}
/*
diff --git a/include/media/s5k6aa.h b/include/media/s5k6aa.h
new file mode 100644
index 000000000000..ba34f7055e55
--- /dev/null
+++ b/include/media/s5k6aa.h
@@ -0,0 +1,51 @@
+/*
+ * S5K6AAFX camera sensor driver header
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef S5K6AA_H
+#define S5K6AA_H
+
+#include <media/v4l2-mediabus.h>
+
+/**
+ * struct s5k6aa_gpio - data structure describing a GPIO
+ * @gpio: GPIO number
+ * @level: indicates active state of the @gpio
+ */
+struct s5k6aa_gpio {
+ int gpio;
+ int level;
+};
+
+/**
+ * struct s5k6aa_platform_data - s5k6aa driver platform data
+ * @set_power: an additional callback to the board code, called
+ * after enabling the regulators and before switching
+ * the sensor off
+ * @mclk_frequency: sensor's master clock frequency in Hz
+ * @gpio_reset: GPIO driving RESET pin
+ * @gpio_stby: GPIO driving STBY pin
+ * @nlanes: maximum number of MIPI-CSI lanes used
+ * @horiz_flip: default horizontal image flip value, non zero to enable
+ * @vert_flip: default vertical image flip value, non zero to enable
+ */
+
+struct s5k6aa_platform_data {
+ int (*set_power)(int enable);
+ unsigned long mclk_frequency;
+ struct s5k6aa_gpio gpio_reset;
+ struct s5k6aa_gpio gpio_stby;
+ enum v4l2_mbus_type bus_type;
+ u8 nlanes;
+ u8 horiz_flip;
+ u8 vert_flip;
+};
+
+#endif /* S5K6AA_H */
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 7582952dceae..b1377b931eb7 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -12,12 +12,14 @@
#ifndef SOC_CAMERA_H
#define SOC_CAMERA_H
+#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/pm.h>
#include <linux/videodev2.h>
#include <media/videobuf-core.h>
#include <media/videobuf2-core.h>
+#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
struct file;
@@ -37,8 +39,8 @@ struct soc_camera_device {
unsigned char iface; /* Host number */
unsigned char devnum; /* Device number per host */
struct soc_camera_sense *sense; /* See comment in struct definition */
- struct soc_camera_ops *ops;
struct video_device *vdev;
+ struct v4l2_ctrl_handler ctrl_handler;
const struct soc_camera_format_xlate *current_fmt;
struct soc_camera_format_xlate *user_formats;
int num_user_formats;
@@ -93,14 +95,10 @@ struct soc_camera_host_ops {
int (*reqbufs)(struct soc_camera_device *, struct v4l2_requestbuffers *);
int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
int (*set_bus_param)(struct soc_camera_device *, __u32);
- int (*get_ctrl)(struct soc_camera_device *, struct v4l2_control *);
- int (*set_ctrl)(struct soc_camera_device *, struct v4l2_control *);
int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
int (*enum_fsizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *);
unsigned int (*poll)(struct file *, poll_table *);
- const struct v4l2_queryctrl *controls;
- int num_controls;
};
#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
@@ -193,13 +191,6 @@ struct soc_camera_format_xlate {
const struct soc_mbus_pixelfmt *host_fmt;
};
-struct soc_camera_ops {
- unsigned long (*query_bus_param)(struct soc_camera_device *);
- int (*set_bus_param)(struct soc_camera_device *, unsigned long);
- const struct v4l2_queryctrl *controls;
- int num_controls;
-};
-
#define SOCAM_SENSE_PCLK_CHANGED (1 << 0)
/**
@@ -226,65 +217,18 @@ struct soc_camera_sense {
unsigned long pixel_clock;
};
-static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
- struct soc_camera_ops *ops, int id)
-{
- int i;
-
- for (i = 0; i < ops->num_controls; i++)
- if (ops->controls[i].id == id)
- return &ops->controls[i];
-
- return NULL;
-}
-
-#define SOCAM_MASTER (1 << 0)
-#define SOCAM_SLAVE (1 << 1)
-#define SOCAM_HSYNC_ACTIVE_HIGH (1 << 2)
-#define SOCAM_HSYNC_ACTIVE_LOW (1 << 3)
-#define SOCAM_VSYNC_ACTIVE_HIGH (1 << 4)
-#define SOCAM_VSYNC_ACTIVE_LOW (1 << 5)
-#define SOCAM_DATAWIDTH_4 (1 << 6)
-#define SOCAM_DATAWIDTH_8 (1 << 7)
-#define SOCAM_DATAWIDTH_9 (1 << 8)
-#define SOCAM_DATAWIDTH_10 (1 << 9)
-#define SOCAM_DATAWIDTH_15 (1 << 10)
-#define SOCAM_DATAWIDTH_16 (1 << 11)
-#define SOCAM_PCLK_SAMPLE_RISING (1 << 12)
-#define SOCAM_PCLK_SAMPLE_FALLING (1 << 13)
-#define SOCAM_DATA_ACTIVE_HIGH (1 << 14)
-#define SOCAM_DATA_ACTIVE_LOW (1 << 15)
-#define SOCAM_MIPI_1LANE (1 << 16)
-#define SOCAM_MIPI_2LANE (1 << 17)
-#define SOCAM_MIPI_3LANE (1 << 18)
-#define SOCAM_MIPI_4LANE (1 << 19)
-#define SOCAM_MIPI (SOCAM_MIPI_1LANE | SOCAM_MIPI_2LANE | \
- SOCAM_MIPI_3LANE | SOCAM_MIPI_4LANE)
+#define SOCAM_DATAWIDTH(x) BIT((x) - 1)
+#define SOCAM_DATAWIDTH_4 SOCAM_DATAWIDTH(4)
+#define SOCAM_DATAWIDTH_8 SOCAM_DATAWIDTH(8)
+#define SOCAM_DATAWIDTH_9 SOCAM_DATAWIDTH(9)
+#define SOCAM_DATAWIDTH_10 SOCAM_DATAWIDTH(10)
+#define SOCAM_DATAWIDTH_15 SOCAM_DATAWIDTH(15)
+#define SOCAM_DATAWIDTH_16 SOCAM_DATAWIDTH(16)
#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 | SOCAM_DATAWIDTH_8 | \
SOCAM_DATAWIDTH_9 | SOCAM_DATAWIDTH_10 | \
SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_16)
-static inline unsigned long soc_camera_bus_param_compatible(
- unsigned long camera_flags, unsigned long bus_flags)
-{
- unsigned long common_flags, hsync, vsync, pclk, data, buswidth, mode;
- unsigned long mipi;
-
- common_flags = camera_flags & bus_flags;
-
- hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW);
- vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW);
- pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING);
- data = common_flags & (SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_LOW);
- mode = common_flags & (SOCAM_MASTER | SOCAM_SLAVE);
- buswidth = common_flags & SOCAM_DATAWIDTH_MASK;
- mipi = common_flags & SOCAM_MIPI;
-
- return ((!hsync || !vsync || !pclk || !data || !mode || !buswidth) && !mipi) ? 0 :
- common_flags;
-}
-
static inline void soc_camera_limit_side(int *start, int *length,
unsigned int start_min,
unsigned int length_min, unsigned int length_max)
@@ -300,23 +244,37 @@ static inline void soc_camera_limit_side(int *start, int *length,
*start = start_min + length_max - *length;
}
-extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
- unsigned long flags);
+unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
+ unsigned long flags);
+unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl,
+ const struct v4l2_mbus_config *cfg);
/* This is only temporary here - until v4l2-subdev begins to link to video_device */
#include <linux/i2c.h>
-static inline struct video_device *soc_camera_i2c_to_vdev(struct i2c_client *client)
+static inline struct video_device *soc_camera_i2c_to_vdev(const struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct soc_camera_device *icd = (struct soc_camera_device *)sd->grp_id;
+ return icd ? icd->vdev : NULL;
+}
+
+static inline struct soc_camera_link *soc_camera_i2c_to_link(const struct i2c_client *client)
+{
+ return client->dev.platform_data;
+}
+
+static inline struct v4l2_subdev *soc_camera_vdev_to_subdev(const struct video_device *vdev)
{
- struct soc_camera_device *icd = client->dev.platform_data;
- return icd->vdev;
+ struct soc_camera_device *icd = dev_get_drvdata(vdev->parent);
+ return soc_camera_to_subdev(icd);
}
-static inline struct soc_camera_device *soc_camera_from_vb2q(struct vb2_queue *vq)
+static inline struct soc_camera_device *soc_camera_from_vb2q(const struct vb2_queue *vq)
{
return container_of(vq, struct soc_camera_device, vb2_vidq);
}
-static inline struct soc_camera_device *soc_camera_from_vbq(struct videobuf_queue *vq)
+static inline struct soc_camera_device *soc_camera_from_vbq(const struct videobuf_queue *vq)
{
return container_of(vq, struct soc_camera_device, vb_vidq);
}
diff --git a/include/media/soc_camera_platform.h b/include/media/soc_camera_platform.h
index 74f0fa15ca47..8aa4200a0b1d 100644
--- a/include/media/soc_camera_platform.h
+++ b/include/media/soc_camera_platform.h
@@ -13,6 +13,7 @@
#include <linux/videodev2.h>
#include <media/soc_camera.h>
+#include <media/v4l2-mediabus.h>
struct device;
@@ -20,7 +21,8 @@ struct soc_camera_platform_info {
const char *format_name;
unsigned long format_depth;
struct v4l2_mbus_framefmt format;
- unsigned long bus_param;
+ unsigned long mbus_param;
+ enum v4l2_mbus_type mbus_type;
struct soc_camera_device *icd;
int (*set_capture)(struct soc_camera_platform_info *info, int enable);
};
diff --git a/include/media/soc_mediabus.h b/include/media/soc_mediabus.h
index fae432544b41..73f1e7eb60f3 100644
--- a/include/media/soc_mediabus.h
+++ b/include/media/soc_mediabus.h
@@ -82,5 +82,7 @@ const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf);
int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
unsigned int *numerator, unsigned int *denominator);
+unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
+ unsigned int flags);
#endif
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index dd9f1e7b8ff7..4d1c74ad4c84 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -122,6 +122,8 @@ struct v4l2_ioctl_ops {
int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
+ int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
+ int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);
int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
int (*vidioc_g_fbuf) (struct file *file, void *fh,
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 257da1a30f66..f0f3358d1b1b 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -158,6 +158,7 @@ struct v4l2_subdev_core_ops {
int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
+ int (*g_std)(struct v4l2_subdev *sd, v4l2_std_id *norm);
int (*s_std)(struct v4l2_subdev *sd, v4l2_std_id norm);
long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
#ifdef CONFIG_VIDEO_ADV_DEBUG
@@ -534,13 +535,13 @@ struct v4l2_subdev {
void *dev_priv;
void *host_priv;
/* subdev device node */
- struct video_device devnode;
+ struct video_device *devnode;
};
#define media_entity_to_v4l2_subdev(ent) \
container_of(ent, struct v4l2_subdev, entity)
#define vdev_to_v4l2_subdev(vdev) \
- container_of(vdev, struct v4l2_subdev, devnode)
+ video_get_drvdata(vdev)
/*
* Used for storing subdev information per file handle
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index ea55c08eddfb..a15d1f1b319e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -105,6 +105,7 @@ enum vb2_fileio_flags {
/**
* enum vb2_buffer_state - current video buffer state
* @VB2_BUF_STATE_DEQUEUED: buffer under userspace control
+ * @VB2_BUF_STATE_PREPARED: buffer prepared in videobuf and by the driver
* @VB2_BUF_STATE_QUEUED: buffer queued in videobuf, but not in driver
* @VB2_BUF_STATE_ACTIVE: buffer queued in driver and possibly used
* in a hardware operation
@@ -116,6 +117,7 @@ enum vb2_fileio_flags {
*/
enum vb2_buffer_state {
VB2_BUF_STATE_DEQUEUED,
+ VB2_BUF_STATE_PREPARED,
VB2_BUF_STATE_QUEUED,
VB2_BUF_STATE_ACTIVE,
VB2_BUF_STATE_DONE,
@@ -167,13 +169,21 @@ struct vb2_buffer {
/**
* struct vb2_ops - driver-specific callbacks
*
- * @queue_setup: called from a VIDIOC_REQBUFS handler, before
- * memory allocation; driver should return the required
- * number of buffers in num_buffers, the required number
- * of planes per buffer in num_planes; the size of each
- * plane should be set in the sizes[] array and optional
- * per-plane allocator specific context in alloc_ctxs[]
- * array
+ * @queue_setup: called from VIDIOC_REQBUFS and VIDIOC_CREATE_BUFS
+ * handlers before memory allocation, or, if
+ * *num_planes != 0, after the allocation to verify a
+ * smaller number of buffers. Driver should return
+ * the required number of buffers in *num_buffers, the
+ * required number of planes per buffer in *num_planes; the
+ * size of each plane should be set in the sizes[] array
+ * and optional per-plane allocator specific context in the
+ * alloc_ctxs[] array. When called from VIDIOC_REQBUFS,
+ * fmt == NULL, the driver has to use the currently
+ * configured format and *num_buffers is the total number
+ * of buffers, that are being allocated. When called from
+ * VIDIOC_CREATE_BUFS, fmt != NULL and it describes the
+ * target frame format. In this case *num_buffers are being
+ * allocated additionally to q->num_buffers.
* @wait_prepare: release any locks taken while calling vb2 functions;
* it is called before an ioctl needs to wait for a new
* buffer to arrive; required to avoid a deadlock in
@@ -186,11 +196,11 @@ struct vb2_buffer {
* perform additional buffer-related initialization;
* initialization failure (return != 0) will prevent
* queue setup from completing successfully; optional
- * @buf_prepare: called every time the buffer is queued from userspace;
- * drivers may perform any initialization required before
- * each hardware operation in this callback;
- * if an error is returned, the buffer will not be queued
- * in driver; optional
+ * @buf_prepare: called every time the buffer is queued from userspace
+ * and from the VIDIOC_PREPARE_BUF ioctl; drivers may
+ * perform any initialization required before each hardware
+ * operation in this callback; if an error is returned, the
+ * buffer will not be queued in driver; optional
* @buf_finish: called before every dequeue of the buffer back to
* userspace; drivers may perform any operations required
* before userspace accesses the buffer; optional
@@ -216,9 +226,9 @@ struct vb2_buffer {
* pre-queued buffers before calling STREAMON
*/
struct vb2_ops {
- int (*queue_setup)(struct vb2_queue *q, unsigned int *num_buffers,
- unsigned int *num_planes, unsigned int sizes[],
- void *alloc_ctxs[]);
+ int (*queue_setup)(struct vb2_queue *q, const struct v4l2_format *fmt,
+ unsigned int *num_buffers, unsigned int *num_planes,
+ unsigned int sizes[], void *alloc_ctxs[]);
void (*wait_prepare)(struct vb2_queue *q);
void (*wait_finish)(struct vb2_queue *q);
@@ -298,6 +308,9 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b);
int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req);
+int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
+int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b);
+
int vb2_queue_init(struct vb2_queue *q);
void vb2_queue_release(struct vb2_queue *q);
@@ -309,6 +322,13 @@ int vb2_streamon(struct vb2_queue *q, enum v4l2_buf_type type);
int vb2_streamoff(struct vb2_queue *q, enum v4l2_buf_type type);
int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma);
+#ifndef CONFIG_MMU
+unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
+ unsigned long addr,
+ unsigned long len,
+ unsigned long pgoff,
+ unsigned long flags);
+#endif
unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait);
size_t vb2_read(struct vb2_queue *q, char __user *data, size_t count,
loff_t *ppos, int nonblock);