[PATCH] usb: gadget: uvc: Add framebased frame format support
From: Akash Kumar
Date: Tue Nov 14 2023 - 06:25:48 EST
Add support for framebased frame format which can be used to support
multiple formats like H264 or H265 other than mjpeg and YUV frames.
Framebased format is set to H264 by default, which can be updated to
other formats by updating the GUID through guid configfs attribute.
Also,add UVC 1.5 extension to support H264 format and different camera
controls, adding support for Exposure, Zoom, Pan, tilt.
Signed-off-by: Akash Kumar <quic_akakum@xxxxxxxxxxx>
---
drivers/usb/gadget/function/f_uvc.c | 13 +-
drivers/usb/gadget/function/uvc_configfs.c | 565 ++++++++++++++++++---
drivers/usb/gadget/function/uvc_v4l2.c | 1 +
include/uapi/linux/usb/video.h | 60 ++-
4 files changed, 560 insertions(+), 79 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c
index 0b9712616455..17299735c1ff 100644
--- a/drivers/usb/gadget/function/f_uvc.c
+++ b/drivers/usb/gadget/function/f_uvc.c
@@ -802,9 +802,9 @@ static struct usb_function_instance *uvc_alloc_inst(void)
cd->wObjectiveFocalLengthMax = cpu_to_le16(0);
cd->wOcularFocalLength = cpu_to_le16(0);
cd->bControlSize = 3;
- cd->bmControls[0] = 2;
- cd->bmControls[1] = 0;
- cd->bmControls[2] = 0;
+ cd->bmControls[0] = 62;
+ cd->bmControls[1] = 126;
+ cd->bmControls[2] = 10;
pd = &opts->uvc_processing;
pd->bLength = UVC_DT_PROCESSING_UNIT_SIZE(2);
@@ -813,9 +813,10 @@ static struct usb_function_instance *uvc_alloc_inst(void)
pd->bUnitID = 2;
pd->bSourceID = 1;
pd->wMaxMultiplier = cpu_to_le16(16*1024);
- pd->bControlSize = 2;
- pd->bmControls[0] = 1;
- pd->bmControls[1] = 0;
+ pd->bControlSize = 3;
+ pd->bmControls[0] = 91;
+ pd->bmControls[1] = 23;
+ pd->bmControls[2] = 4;
pd->iProcessing = 0;
od = &opts->uvc_output_terminal;
diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index 00fb58e50a15..7e05fcec9fb1 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -231,7 +231,7 @@ static struct config_item *uvcg_control_header_make(struct config_group *group,
h->desc.bLength = UVC_DT_HEADER_SIZE(1);
h->desc.bDescriptorType = USB_DT_CS_INTERFACE;
h->desc.bDescriptorSubType = UVC_VC_HEADER;
- h->desc.bcdUVC = cpu_to_le16(0x0100);
+ h->desc.bcdUVC = cpu_to_le16(0x0150);
h->desc.dwClockFrequency = cpu_to_le32(48000000);
config_item_init_type_name(&h->item, name, &uvcg_control_header_type);
@@ -767,11 +767,13 @@ static const struct uvcg_config_group_type uvcg_control_grp_type = {
static const char * const uvcg_format_names[] = {
"uncompressed",
"mjpeg",
+ "h264",
};
enum uvcg_format_type {
UVCG_UNCOMPRESSED = 0,
UVCG_MJPEG,
+ UVCG_FRAMEBASED,
};
struct uvcg_format {
@@ -1067,20 +1069,11 @@ static const struct uvcg_config_group_type uvcg_streaming_header_grp_type = {
struct uvcg_frame {
struct config_item item;
enum uvcg_format_type fmt_type;
- struct {
- u8 b_length;
- u8 b_descriptor_type;
- u8 b_descriptor_subtype;
- u8 b_frame_index;
- u8 bm_capabilities;
- u16 w_width;
- u16 w_height;
- u32 dw_min_bit_rate;
- u32 dw_max_bit_rate;
- u32 dw_max_video_frame_buffer_size;
- u32 dw_default_frame_interval;
- u8 b_frame_interval_type;
- } __attribute__((packed)) frame;
+ union {
+ struct uvc_frame_uncompressed uf;
+ struct uvc_frame_mjpeg mf;
+ struct uvc_frame_framebased hf;
+ } frame;
u32 *dw_frame_interval;
};
@@ -1089,8 +1082,8 @@ static struct uvcg_frame *to_uvcg_frame(struct config_item *item)
return container_of(item, struct uvcg_frame, item);
}
-#define UVCG_FRAME_ATTR(cname, aname, bits) \
-static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\
+#define UVCG_FRAME_ATTR(cname, fname, bits) \
+static ssize_t uvcg_frame_##fname##_##cname##_show(struct config_item *item, char *page)\
{ \
struct uvcg_frame *f = to_uvcg_frame(item); \
struct f_uvc_opts *opts; \
@@ -1104,14 +1097,14 @@ static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\
opts = to_f_uvc_opts(opts_item); \
\
mutex_lock(&opts->lock); \
- result = sprintf(page, "%u\n", f->frame.cname); \
+ result = scnprintf(page, PAGE_SIZE, "%u\n", f->frame.fname.cname);\
mutex_unlock(&opts->lock); \
\
mutex_unlock(su_mutex); \
return result; \
} \
\
-static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \
+static ssize_t uvcg_frame_##fname##_##cname##_store(struct config_item *item, \
const char *page, size_t len)\
{ \
struct uvcg_frame *f = to_uvcg_frame(item); \
@@ -1119,7 +1112,7 @@ static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \
struct config_item *opts_item; \
struct uvcg_format *fmt; \
struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\
- typeof(f->frame.cname) num; \
+ typeof(f->frame.fname.cname) num; \
int ret; \
\
ret = kstrtou##bits(page, 0, &num); \
@@ -1138,7 +1131,7 @@ static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \
goto end; \
} \
\
- f->frame.cname = num; \
+ f->frame.fname.cname = num; \
ret = len; \
end: \
mutex_unlock(&opts->lock); \
@@ -1146,7 +1139,7 @@ end: \
return ret; \
} \
\
-UVC_ATTR(uvcg_frame_, cname, aname);
+UVC_ATTR(uvcg_frame_, fname##_##cname, cname);
static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item,
char *page)
@@ -1158,6 +1151,7 @@ static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item,
struct config_item *fmt_item;
struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;
int result;
+ u8 frame_index = 0;
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
@@ -1173,7 +1167,13 @@ static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item,
opts = to_f_uvc_opts(opts_item);
mutex_lock(&opts->lock);
- result = sprintf(page, "%u\n", f->frame.b_frame_index);
+ if (f->fmt_type == UVCG_UNCOMPRESSED)
+ frame_index = f->frame.uf.bFrameIndex;
+ else if (f->fmt_type == UVCG_MJPEG)
+ frame_index = f->frame.mf.bFrameIndex;
+ else if (f->fmt_type == UVCG_FRAMEBASED)
+ frame_index = f->frame.hf.bFrameIndex;
+ result = scnprintf(page, PAGE_SIZE, "%u\n", frame_index);
mutex_unlock(&opts->lock);
out:
@@ -1183,13 +1183,32 @@ static ssize_t uvcg_frame_b_frame_index_show(struct config_item *item,
UVC_ATTR_RO(uvcg_frame_, b_frame_index, bFrameIndex);
-UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, 8);
-UVCG_FRAME_ATTR(w_width, wWidth, 16);
-UVCG_FRAME_ATTR(w_height, wHeight, 16);
-UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, 32);
-UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, 32);
-UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, 32);
-UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, 32);
+/* Declare configurable frame attributes for uncompressed format */
+UVCG_FRAME_ATTR(bmCapabilities, uf, 8);
+UVCG_FRAME_ATTR(wWidth, uf, 16);
+UVCG_FRAME_ATTR(wHeight, uf, 16);
+UVCG_FRAME_ATTR(dwMinBitRate, uf, 32);
+UVCG_FRAME_ATTR(dwMaxBitRate, uf, 32);
+UVCG_FRAME_ATTR(dwMaxVideoFrameBufferSize, uf, 32);
+UVCG_FRAME_ATTR(dwDefaultFrameInterval, uf, 32);
+
+/* Declare configurable frame attributes for mjpeg format */
+UVCG_FRAME_ATTR(bmCapabilities, mf, 8);
+UVCG_FRAME_ATTR(wWidth, mf, 16);
+UVCG_FRAME_ATTR(wHeight, mf, 16);
+UVCG_FRAME_ATTR(dwMinBitRate, mf, 32);
+UVCG_FRAME_ATTR(dwMaxBitRate, mf, 32);
+UVCG_FRAME_ATTR(dwMaxVideoFrameBufferSize, mf, 32);
+UVCG_FRAME_ATTR(dwDefaultFrameInterval, mf, 32);
+
+/* Declare configurable frame attributes for framebased format */
+UVCG_FRAME_ATTR(bmCapabilities, hf, 8);
+UVCG_FRAME_ATTR(wWidth, hf, 16);
+UVCG_FRAME_ATTR(wHeight, hf, 16);
+UVCG_FRAME_ATTR(dwMinBitRate, hf, 32);
+UVCG_FRAME_ATTR(dwMaxBitRate, hf, 32);
+UVCG_FRAME_ATTR(dwDefaultFrameInterval, hf, 32);
+UVCG_FRAME_ATTR(dwBytesPerLine, hf, 32);
#undef UVCG_FRAME_ATTR
@@ -1200,7 +1219,7 @@ static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item,
struct f_uvc_opts *opts;
struct config_item *opts_item;
struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex;
- int result, i;
+ int result, i, n;
char *pg = page;
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
@@ -1209,7 +1228,15 @@ static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item,
opts = to_f_uvc_opts(opts_item);
mutex_lock(&opts->lock);
- for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) {
+ n = 0;
+ if (frm->fmt_type == UVCG_UNCOMPRESSED)
+ n = frm->frame.uf.bFrameIntervalType;
+ else if (frm->fmt_type == UVCG_MJPEG)
+ n = frm->frame.mf.bFrameIntervalType;
+ else if (frm->fmt_type == UVCG_FRAMEBASED)
+ n = frm->frame.hf.bFrameIntervalType;
+
+ for (result = 0, i = 0; i < n; ++i) {
result += sprintf(pg, "%u\n", frm->dw_frame_interval[i]);
pg = page + result;
}
@@ -1311,7 +1338,13 @@ static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item,
kfree(ch->dw_frame_interval);
ch->dw_frame_interval = frm_intrv;
- ch->frame.b_frame_interval_type = n;
+ if (ch->fmt_type == UVCG_UNCOMPRESSED)
+ ch->frame.uf.bFrameIntervalType = n;
+ else if (ch->fmt_type == UVCG_MJPEG)
+ ch->frame.mf.bFrameIntervalType = n;
+ else if (ch->fmt_type == UVCG_FRAMEBASED)
+ ch->frame.hf.bFrameIntervalType = n;
+
sort(ch->dw_frame_interval, n, sizeof(*ch->dw_frame_interval),
uvcg_config_compare_u32, NULL);
ret = len;
@@ -1324,22 +1357,57 @@ static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item,
UVC_ATTR(uvcg_frame_, dw_frame_interval, dwFrameInterval);
-static struct configfs_attribute *uvcg_frame_attrs[] = {
+static struct configfs_attribute *uvcg_uncompressed_frame_attrs[] = {
&uvcg_frame_attr_b_frame_index,
- &uvcg_frame_attr_bm_capabilities,
- &uvcg_frame_attr_w_width,
- &uvcg_frame_attr_w_height,
- &uvcg_frame_attr_dw_min_bit_rate,
- &uvcg_frame_attr_dw_max_bit_rate,
- &uvcg_frame_attr_dw_max_video_frame_buffer_size,
- &uvcg_frame_attr_dw_default_frame_interval,
+ &uvcg_frame_attr_uf_bmCapabilities,
+ &uvcg_frame_attr_uf_wWidth,
+ &uvcg_frame_attr_uf_wHeight,
+ &uvcg_frame_attr_uf_dwMinBitRate,
+ &uvcg_frame_attr_uf_dwMaxBitRate,
+ &uvcg_frame_attr_uf_dwMaxVideoFrameBufferSize,
+ &uvcg_frame_attr_uf_dwDefaultFrameInterval,
&uvcg_frame_attr_dw_frame_interval,
NULL,
};
-static const struct config_item_type uvcg_frame_type = {
- .ct_item_ops = &uvcg_config_item_ops,
- .ct_attrs = uvcg_frame_attrs,
+static struct configfs_attribute *uvcg_mjpeg_frame_attrs[] = {
+ &uvcg_frame_attr_b_frame_index,
+ &uvcg_frame_attr_mf_bmCapabilities,
+ &uvcg_frame_attr_mf_wWidth,
+ &uvcg_frame_attr_mf_wHeight,
+ &uvcg_frame_attr_mf_dwMinBitRate,
+ &uvcg_frame_attr_mf_dwMaxBitRate,
+ &uvcg_frame_attr_mf_dwMaxVideoFrameBufferSize,
+ &uvcg_frame_attr_mf_dwDefaultFrameInterval,
+ &uvcg_frame_attr_dw_frame_interval,
+ NULL,
+};
+
+static struct configfs_attribute *uvcg_framebased_frame_attrs[] = {
+ &uvcg_frame_attr_b_frame_index,
+ &uvcg_frame_attr_hf_bmCapabilities,
+ &uvcg_frame_attr_hf_wWidth,
+ &uvcg_frame_attr_hf_wHeight,
+ &uvcg_frame_attr_hf_dwMinBitRate,
+ &uvcg_frame_attr_hf_dwMaxBitRate,
+ &uvcg_frame_attr_hf_dwDefaultFrameInterval,
+ &uvcg_frame_attr_dw_frame_interval,
+ &uvcg_frame_attr_hf_dwBytesPerLine,
+ NULL,
+};
+
+static struct config_item_type uvcg_uncompressed_frame_type = {
+ .ct_attrs = uvcg_uncompressed_frame_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct config_item_type uvcg_mjpeg_frame_type = {
+ .ct_attrs = uvcg_mjpeg_frame_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct config_item_type uvcg_framebased_frame_type = {
+ .ct_attrs = uvcg_framebased_frame_attrs,
.ct_owner = THIS_MODULE,
};
@@ -1350,19 +1418,17 @@ static struct config_item *uvcg_frame_make(struct config_group *group,
struct uvcg_format *fmt;
struct f_uvc_opts *opts;
struct config_item *opts_item;
+ struct config_item_type *uvcg_frame_config_item;
+ struct uvc_frame_uncompressed *uf;
h = kzalloc(sizeof(*h), GFP_KERNEL);
if (!h)
return ERR_PTR(-ENOMEM);
- h->frame.b_descriptor_type = USB_DT_CS_INTERFACE;
- h->frame.b_frame_index = 1;
- h->frame.w_width = 640;
- h->frame.w_height = 360;
- h->frame.dw_min_bit_rate = 18432000;
- h->frame.dw_max_bit_rate = 55296000;
- h->frame.dw_max_video_frame_buffer_size = 460800;
- h->frame.dw_default_frame_interval = 666666;
+ uf = &h->frame.uf;
+
+ uf->bDescriptorType = USB_DT_CS_INTERFACE;
+ uf->bFrameIndex = 1;
opts_item = group->cg_item.ci_parent->ci_parent->ci_parent;
opts = to_f_uvc_opts(opts_item);
@@ -1370,11 +1436,47 @@ static struct config_item *uvcg_frame_make(struct config_group *group,
mutex_lock(&opts->lock);
fmt = to_uvcg_format(&group->cg_item);
if (fmt->type == UVCG_UNCOMPRESSED) {
- h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED;
+ uf->bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED;
+ uf->wWidth = cpu_to_le16(640);
+ uf->wHeight = cpu_to_le16(360);
+ uf->dwMinBitRate = cpu_to_le32(18432000);
+ uf->dwMaxBitRate = cpu_to_le32(55296000);
+ uf->dwMaxVideoFrameBufferSize = cpu_to_le32(460800);
+ uf->dwDefaultFrameInterval = cpu_to_le32(666666);
+
h->fmt_type = UVCG_UNCOMPRESSED;
+ uvcg_frame_config_item = &uvcg_uncompressed_frame_type;
} else if (fmt->type == UVCG_MJPEG) {
- h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG;
+ struct uvc_frame_mjpeg *mf = &h->frame.mf;
+
+ mf->bDescriptorType = USB_DT_CS_INTERFACE;
+ mf->bFrameIndex = 1;
+ mf->bDescriptorSubType = UVC_VS_FRAME_MJPEG;
+ mf->wWidth = cpu_to_le16(640);
+ mf->wHeight = cpu_to_le16(360);
+ mf->dwMinBitRate = cpu_to_le32(18432000);
+ mf->dwMaxBitRate = cpu_to_le32(55296000);
+ mf->dwMaxVideoFrameBufferSize = cpu_to_le32(460800);
+ mf->dwDefaultFrameInterval = cpu_to_le32(666666);
+
h->fmt_type = UVCG_MJPEG;
+ uvcg_frame_config_item = &uvcg_mjpeg_frame_type;
+ } else if (fmt->type == UVCG_FRAMEBASED) {
+ struct uvc_frame_framebased *hf = &h->frame.hf;
+
+ hf->bDescriptorType = USB_DT_CS_INTERFACE;
+ hf->bDescriptorSubType = UVC_VS_FRAME_FRAME_BASED;
+ hf->bFrameIndex = 1;
+ hf->wWidth = cpu_to_le16(640);
+ hf->wHeight = cpu_to_le16(360);
+ hf->dwMinBitRate = cpu_to_le32(12288000);
+ hf->dwMaxBitRate = cpu_to_le32(36864000);
+ hf->dwDefaultFrameInterval = cpu_to_le32(333667);
+ hf->bmCapabilities = 0x00;
+ hf->dwBytesPerLine = 0;
+
+ h->fmt_type = UVCG_FRAMEBASED;
+ uvcg_frame_config_item = &uvcg_framebased_frame_type;
} else {
mutex_unlock(&opts->lock);
kfree(h);
@@ -1383,7 +1485,7 @@ static struct config_item *uvcg_frame_make(struct config_group *group,
++fmt->num_frames;
mutex_unlock(&opts->lock);
- config_item_init_type_name(&h->item, name, &uvcg_frame_type);
+ config_item_init_type_name(&h->item, name, uvcg_frame_config_item);
return &h->item;
}
@@ -1413,11 +1515,20 @@ static void uvcg_format_set_indices(struct config_group *fmt)
list_for_each_entry(ci, &fmt->cg_children, ci_entry) {
struct uvcg_frame *frm;
- if (ci->ci_type != &uvcg_frame_type)
+ if ((ci->ci_type != &uvcg_uncompressed_frame_type) ||
+ (ci->ci_type != &uvcg_mjpeg_frame_type) ||
+ (ci->ci_type != &uvcg_framebased_frame_type))
continue;
frm = to_uvcg_frame(ci);
- frm->frame.b_frame_index = i++;
+ if (frm->fmt_type == UVCG_UNCOMPRESSED)
+ frm->frame.uf.bFrameIndex = i;
+ else if (frm->fmt_type == UVCG_MJPEG)
+ frm->frame.mf.bFrameIndex = i;
+ else if (frm->fmt_type == UVCG_FRAMEBASED)
+ frm->frame.hf.bFrameIndex = i;
+
+ i++;
}
}
@@ -1856,6 +1967,263 @@ static const struct uvcg_config_group_type uvcg_mjpeg_grp_type = {
.name = "mjpeg",
};
+/* -----------------------------------------------------------------------------
+ * streaming/framebased/<NAME>
+ */
+
+struct uvcg_framebased {
+ struct uvcg_format fmt;
+ struct uvc_format_framebased desc;
+};
+
+static struct uvcg_framebased *to_uvcg_framebased(struct config_item *item)
+{
+ return container_of(
+ container_of(to_config_group(item), struct uvcg_format, group),
+ struct uvcg_framebased, fmt);
+}
+
+static struct configfs_group_operations uvcg_framebased_group_ops = {
+ .make_item = uvcg_frame_make,
+ .drop_item = uvcg_frame_drop,
+};
+
+#define UVCG_FRAMEBASED_ATTR_RO(cname, aname, bits) \
+static ssize_t uvcg_framebased_##cname##_show(struct config_item *item, char *page)\
+{ \
+ struct uvcg_framebased *u = to_uvcg_framebased(item); \
+ struct f_uvc_opts *opts; \
+ struct config_item *opts_item; \
+ struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
+ int result; \
+ \
+ mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
+ \
+ opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
+ opts = to_f_uvc_opts(opts_item); \
+ \
+ mutex_lock(&opts->lock); \
+ result = scnprintf(page, PAGE_SIZE, "%u\n", \
+ le##bits##_to_cpu(u->desc.aname)); \
+ mutex_unlock(&opts->lock); \
+ \
+ mutex_unlock(su_mutex); \
+ return result; \
+} \
+ \
+UVC_ATTR_RO(uvcg_framebased_, cname, aname)
+
+#define UVCG_FRAMEBASED_ATTR(cname, aname, bits) \
+static ssize_t uvcg_framebased_##cname##_show(struct config_item *item, char *page)\
+{ \
+ struct uvcg_framebased *u = to_uvcg_framebased(item); \
+ struct f_uvc_opts *opts; \
+ struct config_item *opts_item; \
+ struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
+ int result; \
+ \
+ mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
+ \
+ opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
+ opts = to_f_uvc_opts(opts_item); \
+ \
+ mutex_lock(&opts->lock); \
+ result = scnprintf(page, PAGE_SIZE, "%u\n", \
+ le##bits##_to_cpu(u->desc.aname)); \
+ mutex_unlock(&opts->lock); \
+ \
+ mutex_unlock(su_mutex); \
+ return result; \
+} \
+ \
+static ssize_t \
+uvcg_framebased_##cname##_store(struct config_item *item, \
+ const char *page, size_t len) \
+{ \
+ struct uvcg_framebased *u = to_uvcg_framebased(item); \
+ struct f_uvc_opts *opts; \
+ struct config_item *opts_item; \
+ struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \
+ int ret; \
+ u8 num; \
+ \
+ mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \
+ \
+ opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\
+ opts = to_f_uvc_opts(opts_item); \
+ \
+ mutex_lock(&opts->lock); \
+ if (u->fmt.linked || opts->refcnt) { \
+ ret = -EBUSY; \
+ goto end; \
+ } \
+ \
+ ret = kstrtou8(page, 0, &num); \
+ if (ret) \
+ goto end; \
+ \
+ if (num > 255) { \
+ ret = -EINVAL; \
+ goto end; \
+ } \
+ u->desc.aname = num; \
+ ret = len; \
+end: \
+ mutex_unlock(&opts->lock); \
+ mutex_unlock(su_mutex); \
+ return ret; \
+} \
+ \
+UVC_ATTR(uvcg_framebased_, cname, aname)
+
+UVCG_FRAMEBASED_ATTR_RO(b_format_index, bFormatIndex, 8);
+UVCG_FRAMEBASED_ATTR_RO(b_bits_per_pixel, bBitsPerPixel, 8);
+UVCG_FRAMEBASED_ATTR(b_default_frame_index, bDefaultFrameIndex, 8);
+UVCG_FRAMEBASED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, 8);
+UVCG_FRAMEBASED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, 8);
+UVCG_FRAMEBASED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, 8);
+
+#undef UVCG_FRAMEBASED_ATTR
+#undef UVCG_FRAMEBASED_ATTR_RO
+
+static ssize_t uvcg_framebased_guid_format_show(struct config_item *item,
+ char *page)
+{
+ struct uvcg_framebased *u = to_uvcg_framebased(item);
+ struct f_uvc_opts *opts;
+ struct config_item *opts_item;
+ struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex;
+
+ mutex_lock(su_mutex); /* for navigating configfs hierarchy */
+
+ opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;
+ opts = to_f_uvc_opts(opts_item);
+
+ mutex_lock(&opts->lock);
+ memcpy(page, u->desc.guidFormat, sizeof(u->desc.guidFormat));
+ mutex_unlock(&opts->lock);
+
+ mutex_unlock(su_mutex);
+
+ return sizeof(u->desc.guidFormat);
+}
+
+static ssize_t uvcg_framebased_guid_format_store(struct config_item *item,
+ const char *page, size_t len)
+{
+ struct uvcg_framebased *u = to_uvcg_framebased(item);
+ struct f_uvc_opts *opts;
+ struct config_item *opts_item;
+ struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex;
+ int ret;
+
+ mutex_lock(su_mutex); /* for navigating configfs hierarchy */
+
+ opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;
+ opts = to_f_uvc_opts(opts_item);
+
+ mutex_lock(&opts->lock);
+ if (u->fmt.linked || opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ memcpy(u->desc.guidFormat, page,
+ min(sizeof(u->desc.guidFormat), len));
+ ret = sizeof(u->desc.guidFormat);
+
+end:
+ mutex_unlock(&opts->lock);
+ mutex_unlock(su_mutex);
+ return ret;
+}
+
+UVC_ATTR(uvcg_framebased_, guid_format, guidFormat);
+
+static inline ssize_t
+uvcg_framebased_bma_controls_show(struct config_item *item, char *page)
+{
+ struct uvcg_framebased *u = to_uvcg_framebased(item);
+
+ return uvcg_format_bma_controls_show(&u->fmt, page);
+}
+
+static inline ssize_t
+uvcg_framebased_bma_controls_store(struct config_item *item,
+ const char *page, size_t len)
+{
+ struct uvcg_framebased *u = to_uvcg_framebased(item);
+
+ return uvcg_format_bma_controls_store(&u->fmt, page, len);
+}
+
+UVC_ATTR(uvcg_framebased_, bma_controls, bmaControls);
+
+static struct configfs_attribute *uvcg_framebased_attrs[] = {
+ &uvcg_framebased_attr_b_format_index,
+ &uvcg_framebased_attr_b_default_frame_index,
+ &uvcg_framebased_attr_b_bits_per_pixel,
+ &uvcg_framebased_attr_b_aspect_ratio_x,
+ &uvcg_framebased_attr_b_aspect_ratio_y,
+ &uvcg_framebased_attr_bm_interface_flags,
+ &uvcg_framebased_attr_bma_controls,
+ &uvcg_framebased_attr_guid_format,
+ NULL,
+};
+
+static struct config_item_type uvcg_framebased_type = {
+ .ct_item_ops = &uvcg_config_item_ops,
+ .ct_group_ops = &uvcg_framebased_group_ops,
+ .ct_attrs = uvcg_framebased_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct config_group *uvcg_framebased_make(struct config_group *group,
+ const char *name)
+{
+ struct uvcg_framebased *h;
+ static char guid[] = { /*Declare frame based as H264*/
+ 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00,
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71
+ };
+
+ h = kzalloc(sizeof(*h), GFP_KERNEL);
+ if (!h)
+ return ERR_PTR(-ENOMEM);
+
+ h->desc.bLength = UVC_DT_FORMAT_FRAMEBASED_SIZE;
+ h->desc.bDescriptorType = USB_DT_CS_INTERFACE;
+ h->desc.bDescriptorSubType = UVC_VS_FORMAT_FRAME_BASED;
+ memcpy(h->desc.guidFormat, guid, sizeof(guid));
+ h->desc.bBitsPerPixel = 16;
+ h->desc.bDefaultFrameIndex = 1;
+ h->desc.bAspectRatioX = 0;
+ h->desc.bAspectRatioY = 0;
+ h->desc.bmInterfaceFlags = 0;
+ h->desc.bCopyProtect = 0;
+ h->desc.bVariableSize = 1;
+
+ h->fmt.type = UVCG_FRAMEBASED;
+ config_group_init_type_name(&h->fmt.group, name,
+ &uvcg_framebased_type);
+
+ return &h->fmt.group;
+}
+
+static struct configfs_group_operations uvcg_framebased_grp_ops = {
+ .make_group = uvcg_framebased_make,
+};
+
+static const struct uvcg_config_group_type uvcg_framebased_grp_type = {
+ .type = {
+ .ct_item_ops = &uvcg_config_item_ops,
+ .ct_group_ops = &uvcg_framebased_grp_ops,
+ .ct_owner = THIS_MODULE,
+ },
+ .name = "h264",
+};
+
+
/* -----------------------------------------------------------------------------
* streaming/color_matching/default
*/
@@ -2001,6 +2369,7 @@ static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h,
if (ret)
return ret;
grp = &f->fmt->group;
+ j = 0;
list_for_each_entry(item, &grp->cg_children, ci_entry) {
frm = to_uvcg_frame(item);
ret = fun(frm, priv2, priv3, j++, UVCG_FRAME);
@@ -2049,6 +2418,11 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n,
container_of(fmt, struct uvcg_mjpeg, fmt);
*size += sizeof(m->desc);
+ } else if (fmt->type == UVCG_FRAMEBASED) {
+ struct uvcg_framebased *h =
+ container_of(fmt, struct uvcg_framebased, fmt);
+
+ *size += sizeof(h->desc);
} else {
return -EINVAL;
}
@@ -2056,10 +2430,23 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n,
break;
case UVCG_FRAME: {
struct uvcg_frame *frm = priv1;
- int sz = sizeof(frm->dw_frame_interval);
- *size += sizeof(frm->frame);
- *size += frm->frame.b_frame_interval_type * sz;
+ if (frm->fmt_type == UVCG_UNCOMPRESSED) {
+ struct uvc_frame_uncompressed uf =
+ frm->frame.uf;
+ *size +=
+ UVC_DT_FRAME_UNCOMPRESSED_SIZE(uf.bFrameIntervalType);
+ } else if (frm->fmt_type == UVCG_MJPEG) {
+ struct uvc_frame_mjpeg mf =
+ frm->frame.mf;
+ *size +=
+ UVC_DT_FRAME_MJPEG_SIZE(mf.bFrameIntervalType);
+ } else if (frm->fmt_type == UVCG_FRAMEBASED) {
+ struct uvc_frame_framebased hf =
+ frm->frame.hf;
+ *size +=
+ UVC_DT_FRAME_FRAMEBASED_SIZE(hf.bFrameIntervalType);
+ }
}
break;
}
@@ -2123,6 +2510,14 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n,
m->desc.bNumFrameDescriptors = fmt->num_frames;
memcpy(*dest, &m->desc, sizeof(m->desc));
*dest += sizeof(m->desc);
+ } else if (fmt->type == UVCG_FRAMEBASED) {
+ struct uvcg_framebased *h =
+ container_of(fmt, struct uvcg_framebased, fmt);
+
+ h->desc.bFormatIndex = n + 1;
+ h->desc.bNumFrameDescriptors = fmt->num_frames;
+ memcpy(*dest, &h->desc, sizeof(h->desc));
+ *dest += sizeof(h->desc);
} else {
return -EINVAL;
}
@@ -2130,21 +2525,46 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n,
break;
case UVCG_FRAME: {
struct uvcg_frame *frm = priv1;
- struct uvc_descriptor_header *h = *dest;
- sz = sizeof(frm->frame);
- memcpy(*dest, &frm->frame, sz);
- *dest += sz;
- sz = frm->frame.b_frame_interval_type *
- sizeof(*frm->dw_frame_interval);
+ if (frm->fmt_type == UVCG_UNCOMPRESSED) {
+ struct uvc_frame_uncompressed *uf =
+ &frm->frame.uf;
+ uf->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(
+ uf->bFrameIntervalType);
+ uf->bFrameIndex = n+1;
+ sz = UVC_DT_FRAME_UNCOMPRESSED_SIZE(0);
+ memcpy(*dest, uf, sz);
+ *dest += sz;
+ sz = uf->bFrameIntervalType *
+ sizeof(*frm->dw_frame_interval);
+ } else if (frm->fmt_type == UVCG_MJPEG) {
+ struct uvc_frame_mjpeg *mf =
+ &frm->frame.mf;
+ mf->bLength = UVC_DT_FRAME_MJPEG_SIZE(
+ mf->bFrameIntervalType);
+ mf->bFrameIndex = n+1;
+ sz = UVC_DT_FRAME_MJPEG_SIZE(0);
+ memcpy(*dest, mf, sz);
+ *dest += sz;
+ sz = mf->bFrameIntervalType *
+ sizeof(*frm->dw_frame_interval);
+ } else if (frm->fmt_type == UVCG_FRAMEBASED) {
+ struct uvc_frame_framebased *hf =
+ &frm->frame.hf;
+ hf->bLength = UVC_DT_FRAME_FRAMEBASED_SIZE(
+ hf->bFrameIntervalType);
+ hf->bFrameIndex = n+1;
+ sz = UVC_DT_FRAME_FRAMEBASED_SIZE(0);
+ memcpy(*dest, hf, sz);
+ *dest += sz;
+ sz = hf->bFrameIntervalType *
+ sizeof(*frm->dw_frame_interval);
+ } else {
+ return -EINVAL;
+ }
+
memcpy(*dest, frm->dw_frame_interval, sz);
*dest += sz;
- if (frm->fmt_type == UVCG_UNCOMPRESSED)
- h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(
- frm->frame.b_frame_interval_type);
- else if (frm->fmt_type == UVCG_MJPEG)
- h->bLength = UVC_DT_FRAME_MJPEG_SIZE(
- frm->frame.b_frame_interval_type);
}
break;
}
@@ -2357,6 +2777,7 @@ static const struct uvcg_config_group_type uvcg_streaming_grp_type = {
&uvcg_streaming_header_grp_type,
&uvcg_uncompressed_grp_type,
&uvcg_mjpeg_grp_type,
+ &uvcg_framebased_grp_type,
&uvcg_color_matching_grp_type,
&uvcg_streaming_class_grp_type,
NULL,
diff --git a/drivers/usb/gadget/function/uvc_v4l2.c b/drivers/usb/gadget/function/uvc_v4l2.c
index 4ca89eab6159..1056c8048720 100644
--- a/drivers/usb/gadget/function/uvc_v4l2.c
+++ b/drivers/usb/gadget/function/uvc_v4l2.c
@@ -58,6 +58,7 @@ struct uvc_format {
static struct uvc_format uvc_formats[] = {
{ 16, V4L2_PIX_FMT_YUYV },
{ 0, V4L2_PIX_FMT_MJPEG },
+ { 0, V4L2_PIX_FMT_H264 },
};
static int
diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
index d854cb19c42c..dd17a3a17018 100644
--- a/include/uapi/linux/usb/video.h
+++ b/include/uapi/linux/usb/video.h
@@ -300,7 +300,7 @@ struct uvc_processing_unit_descriptor {
__u8 bSourceID;
__le16 wMaxMultiplier;
__u8 bControlSize;
- __u8 bmControls[2];
+ __u8 bmControls[3];
__u8 iProcessing;
} __attribute__((__packed__));
@@ -566,5 +566,63 @@ struct UVC_FRAME_MJPEG(n) { \
__le32 dwFrameInterval[n]; \
} __attribute__ ((packed))
+/* FRAMEBASED Payload - 3.1.1. FRAMEBASED Video Format Descriptor */
+struct uvc_format_framebased {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+ __u8 bFormatIndex;
+ __u8 bNumFrameDescriptors;
+ __u8 guidFormat[16];
+ __u8 bBitsPerPixel;
+ __u8 bDefaultFrameIndex;
+ __u8 bAspectRatioX;
+ __u8 bAspectRatioY;
+ __u8 bmInterfaceFlags;
+ __u8 bCopyProtect;
+ __u8 bVariableSize;
+} __attribute__((__packed__));
+
+#define UVC_DT_FORMAT_FRAMEBASED_SIZE 28
+
+/* H264 Payload - 3.1.2. H264 Video Frame Descriptor */
+struct uvc_frame_framebased {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+ __u8 bFrameIndex;
+ __u8 bmCapabilities;
+ __u16 wWidth;
+ __u16 wHeight;
+ __u32 dwMinBitRate;
+ __u32 dwMaxBitRate;
+ __u32 dwDefaultFrameInterval;
+ __u8 bNumFrameIntervals;
+ __u32 dwBytesPerLine;
+ __u32 dwFrameInterval[];
+} __attribute__((__packed__));
+
+#define UVC_DT_FRAME_FRAMEBASED_SIZE(n) (26+4*(n))
+
+#define UVC_FRAME_FRAMEBASED(n) \
+ uvc_frame_framebased_##n
+
+#define DECLARE_UVC_FRAME_FRAMEBASED(n) \
+struct UVC_FRAME_FRAMEBASED(n) { \
+ __u8 bLength; \
+ __u8 bDescriptorType; \
+ __u8 bDescriptorSubType; \
+ __u8 bFrameIndex; \
+ __u8 bmCapabilities; \
+ __u16 wWidth; \
+ __u16 wHeight; \
+ __u32 dwMinBitRate; \
+ __u32 dwMaxBitRate; \
+ __u32 dwDefaultFrameInterval; \
+ __u8 bNumFrameIntervals; \
+ __u32 dwBytesPerLine; \
+ __u32 dwFrameInterval[n]; \
+} __attribute__ ((packed))
+
#endif /* __LINUX_USB_VIDEO_H */
--
2.17.1