| Message ID | 20231212190517.202002-1-andrzej.p@collabora.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v4] usb: gadget: webcam: Make g_webcam loadable again | expand |
Hi All, W dniu 12.12.2023 o 20:05, Andrzej Pietrasiewicz pisze: > commit 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls") > > has rendered the precomposed (aka legacy) webcam gadget unloadable. > > uvc_alloc() since then has depended on certain config groups being > available in configfs tree related to the UVC function. However, legacy > gadgets do not create anything in configfs, so uvc_alloc() must fail > with -ENOENT no matter what. > > This patch mimics the required configfs hierarchy to satisfy the code which > inspects formats and frames found in uvcg_streaming_header. > > This has been tested with guvcview on the host side, using vivid as a > source of video stream on the device side and using the userspace program > found at https://gitlab.freedesktop.org/camera/uvc-gadget.git. > > Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> > Fixes: 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls") > --- > v3..v4: > - silenced "initializer element is not constant" warnings on old > compiles (created and used a bunch of #defines instead of referring > to a static constr struct /members/, which in the C language is not > considered const) > > v2..v3: > - fixed another typo (actually use uvcg_frame_mjpeg_720p where it should > be used instead of its 360p counterpart) > - eliminated sparse warnings by reverting the effect of cpu_to_le[16|32] > while assigning to uvcg_frame members > > v1..v2: > - fixed a typo (missing character) in one of uvcg_frame_mjpeg_720p's members > > drivers/usb/gadget/function/f_uvc.c | 45 ++-- > drivers/usb/gadget/function/u_uvc.h | 6 + > drivers/usb/gadget/legacy/webcam.c | 333 +++++++++++++++++++++------- > 3 files changed, 284 insertions(+), 100 deletions(-) > > diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c > index 786379f1b7b7..3b46de85ca01 100644 > --- a/drivers/usb/gadget/function/f_uvc.c > +++ b/drivers/usb/gadget/function/f_uvc.c > @@ -960,7 +960,8 @@ static void uvc_free(struct usb_function *f) > struct uvc_device *uvc = to_uvc(f); > struct f_uvc_opts *opts = container_of(f->fi, struct f_uvc_opts, > func_inst); > - config_item_put(&uvc->header->item); > + if (!opts->header) > + config_item_put(&uvc->header->item); > --opts->refcnt; > kfree(uvc); > } > @@ -1052,25 +1053,29 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi) > uvc->desc.hs_streaming = opts->hs_streaming; > uvc->desc.ss_streaming = opts->ss_streaming; > > - streaming = config_group_find_item(&opts->func_inst.group, "streaming"); > - if (!streaming) > - goto err_config; > - > - header = config_group_find_item(to_config_group(streaming), "header"); > - config_item_put(streaming); > - if (!header) > - goto err_config; > - > - h = config_group_find_item(to_config_group(header), "h"); > - config_item_put(header); > - if (!h) > - goto err_config; > - > - uvc->header = to_uvcg_streaming_header(h); > - if (!uvc->header->linked) { > - mutex_unlock(&opts->lock); > - kfree(uvc); > - return ERR_PTR(-EBUSY); > + if (opts->header) { > + uvc->header = opts->header; > + } else { > + streaming = config_group_find_item(&opts->func_inst.group, "streaming"); > + if (!streaming) > + goto err_config; > + > + header = config_group_find_item(to_config_group(streaming), "header"); > + config_item_put(streaming); > + if (!header) > + goto err_config; > + > + h = config_group_find_item(to_config_group(header), "h"); > + config_item_put(header); > + if (!h) > + goto err_config; > + > + uvc->header = to_uvcg_streaming_header(h); > + if (!uvc->header->linked) { > + mutex_unlock(&opts->lock); > + kfree(uvc); > + return ERR_PTR(-EBUSY); > + } > } > > uvc->desc.extension_units = &opts->extension_units; > diff --git a/drivers/usb/gadget/function/u_uvc.h b/drivers/usb/gadget/function/u_uvc.h > index 1ce58f61253c..3ac392cbb779 100644 > --- a/drivers/usb/gadget/function/u_uvc.h > +++ b/drivers/usb/gadget/function/u_uvc.h > @@ -98,6 +98,12 @@ struct f_uvc_opts { > */ > struct mutex lock; > int refcnt; > + > + /* > + * Only for legacy gadget. Shall be NULL for configfs-composed gadgets, > + * which is guaranteed by alloc_inst implementation of f_uvc doing kzalloc. > + */ > + struct uvcg_streaming_header *header; > }; > > #endif /* U_UVC_H */ > diff --git a/drivers/usb/gadget/legacy/webcam.c b/drivers/usb/gadget/legacy/webcam.c > index c06dd1af7a0c..c395438d3978 100644 > --- a/drivers/usb/gadget/legacy/webcam.c > +++ b/drivers/usb/gadget/legacy/webcam.c > @@ -12,6 +12,7 @@ > #include <linux/usb/video.h> > > #include "u_uvc.h" > +#include "uvc_configfs.h" > > USB_GADGET_COMPOSITE_OPTIONS(); > > @@ -84,8 +85,6 @@ static struct usb_device_descriptor webcam_device_descriptor = { > .bNumConfigurations = 0, /* dynamic */ > }; > > -DECLARE_UVC_HEADER_DESCRIPTOR(1); > - > static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = { > .bLength = UVC_DT_HEADER_SIZE(1), > .bDescriptorType = USB_DT_CS_INTERFACE, > @@ -158,43 +157,112 @@ static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = { > .bmaControls[1][0] = 4, > }; > > -static const struct uvc_format_uncompressed uvc_format_yuv = { > - .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, > - .bDescriptorType = USB_DT_CS_INTERFACE, > - .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, > - .bFormatIndex = 1, > - .bNumFrameDescriptors = 2, > - .guidFormat = > - { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, > - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}, > - .bBitsPerPixel = 16, > - .bDefaultFrameIndex = 1, > - .bAspectRatioX = 0, > - .bAspectRatioY = 0, > - .bmInterlaceFlags = 0, > - .bCopyProtect = 0, > +static const struct uvcg_color_matching uvcg_color_matching = { > + .desc = { > + .bLength = UVC_DT_COLOR_MATCHING_SIZE, > + .bDescriptorType = USB_DT_CS_INTERFACE, > + .bDescriptorSubType = UVC_VS_COLORFORMAT, > + .bColorPrimaries = 1, > + .bTransferCharacteristics = 1, > + .bMatrixCoefficients = 4, > + }, > +}; > + > +static struct uvcg_uncompressed uvcg_format_yuv = { > + .fmt = { > + .type = UVCG_UNCOMPRESSED, > + /* add to .frames and fill .num_frames at runtime */ > + .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, > + }, > + .desc = { > + .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, > + .bDescriptorType = USB_DT_CS_INTERFACE, > + .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, > + .bFormatIndex = 1, > + .bNumFrameDescriptors = 2, > + .guidFormat = { > + 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, > + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 > + }, > + .bBitsPerPixel = 16, > + .bDefaultFrameIndex = 1, > + .bAspectRatioX = 0, > + .bAspectRatioY = 0, > + .bmInterlaceFlags = 0, > + .bCopyProtect = 0, > + }, > +}; > + > +static struct uvcg_format_ptr uvcg_format_ptr_yuv = { > + .fmt = &uvcg_format_yuv.fmt, > }; > > DECLARE_UVC_FRAME_UNCOMPRESSED(1); > DECLARE_UVC_FRAME_UNCOMPRESSED(3); > > +#define UVCG_WIDTH_360P 640 > +#define UVCG_HEIGHT_360P 360 > +#define UVCG_MIN_BITRATE_360P 18432000 > +#define UVCG_MAX_BITRATE_360P 55296000 > +#define UVCG_MAX_VIDEO_FB_SZ_360P 460800 > +#define UVCG_FRM_INTERV_0_360P 666666 > +#define UVCG_FRM_INTERV_1_360P 1000000 > +#define UVCG_FRM_INTERV_2_360P 5000000 > +#define UVCG_DEFAULT_FRM_INTERV_360P UVCG_FRM_INTERV_0_360P > + > static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = { > .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), > .bDescriptorType = USB_DT_CS_INTERFACE, > .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, > .bFrameIndex = 1, > .bmCapabilities = 0, > - .wWidth = cpu_to_le16(640), > - .wHeight = cpu_to_le16(360), > - .dwMinBitRate = cpu_to_le32(18432000), > - .dwMaxBitRate = cpu_to_le32(55296000), > - .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), > - .dwDefaultFrameInterval = cpu_to_le32(666666), > + .wWidth = cpu_to_le16(UVCG_WIDTH_360P), > + .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), > + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), > + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), > + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), > + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), > .bFrameIntervalType = 3, > - .dwFrameInterval[0] = cpu_to_le32(666666), > - .dwFrameInterval[1] = cpu_to_le32(1000000), > - .dwFrameInterval[2] = cpu_to_le32(5000000), > + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), > + .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), > + .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), > +}; > + > +static u32 uvcg_frame_yuv_360p_dw_frame_interval[] = { > + [0] = UVCG_FRM_INTERV_0_360P, > + [1] = UVCG_FRM_INTERV_1_360P, > + [2] = UVCG_FRM_INTERV_2_360P, > +}; > + > +static const struct uvcg_frame uvcg_frame_yuv_360p = { > + .fmt_type = UVCG_UNCOMPRESSED, > + .frame = { > + .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), > + .b_descriptor_type = USB_DT_CS_INTERFACE, > + .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, > + .b_frame_index = 1, > + .bm_capabilities = 0, > + .w_width = UVCG_WIDTH_360P, > + .w_height = UVCG_HEIGHT_360P, > + .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, > + .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, > + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, > + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, > + .b_frame_interval_type = 3, > + }, > + .dw_frame_interval = uvcg_frame_yuv_360p_dw_frame_interval, > +}; > + > +static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_360p = { > + .frm = (struct uvcg_frame *)&uvcg_frame_yuv_360p, > }; > +#define UVCG_WIDTH_720P 1280 > +#define UVCG_HEIGHT_720P 720 > +#define UVCG_MIN_BITRATE_720P 29491200 > +#define UVCG_MAX_BITRATE_720P 29491200 > +#define UVCG_MAX_VIDEO_FB_SZ_720P 1843200 > +#define UVCG_FRM_INTERV_0_720P 5000000 > +#define UVCG_DEFAULT_FRM_INTERV_720P UVCG_FRM_INTERV_0_720P > > static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { > .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), > @@ -202,28 +270,66 @@ static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { > .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, > .bFrameIndex = 2, > .bmCapabilities = 0, > - .wWidth = cpu_to_le16(1280), > - .wHeight = cpu_to_le16(720), > - .dwMinBitRate = cpu_to_le32(29491200), > - .dwMaxBitRate = cpu_to_le32(29491200), > - .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), > - .dwDefaultFrameInterval = cpu_to_le32(5000000), > + .wWidth = cpu_to_le16(UVCG_WIDTH_720P), > + .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), > + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), > + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), > + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), > + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), > .bFrameIntervalType = 1, > - .dwFrameInterval[0] = cpu_to_le32(5000000), > + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), > }; > > -static const struct uvc_format_mjpeg uvc_format_mjpg = { > - .bLength = UVC_DT_FORMAT_MJPEG_SIZE, > - .bDescriptorType = USB_DT_CS_INTERFACE, > - .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, > - .bFormatIndex = 2, > - .bNumFrameDescriptors = 2, > - .bmFlags = 0, > - .bDefaultFrameIndex = 1, > - .bAspectRatioX = 0, > - .bAspectRatioY = 0, > - .bmInterlaceFlags = 0, > - .bCopyProtect = 0, > +static u32 uvcg_frame_yuv_720p_dw_frame_interval[] = { > + [0] = UVCG_FRM_INTERV_0_720P, > +}; > + > +static const struct uvcg_frame uvcg_frame_yuv_720p = { > + .fmt_type = UVCG_UNCOMPRESSED, > + .frame = { > + .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), > + .b_descriptor_type = USB_DT_CS_INTERFACE, > + .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, > + .b_frame_index = 2, > + .bm_capabilities = 0, > + .w_width = UVCG_WIDTH_720P, > + .w_height = UVCG_HEIGHT_720P, > + .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, > + .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, > + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, > + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, > + .b_frame_interval_type = 1, > + }, > + .dw_frame_interval = uvcg_frame_yuv_720p_dw_frame_interval, > +}; > + > +static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_720p = { > + .frm = (struct uvcg_frame *)&uvcg_frame_yuv_720p, > +}; > + > +static struct uvcg_mjpeg uvcg_format_mjpeg = { > + .fmt = { > + .type = UVCG_MJPEG, > + /* add to .frames and fill .num_frames at runtime */ > + .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, > + }, > + .desc = { > + .bLength = UVC_DT_FORMAT_MJPEG_SIZE, > + .bDescriptorType = USB_DT_CS_INTERFACE, > + .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, > + .bFormatIndex = 2, > + .bNumFrameDescriptors = 2, > + .bmFlags = 0, > + .bDefaultFrameIndex = 1, > + .bAspectRatioX = 0, > + .bAspectRatioY = 0, > + .bmInterlaceFlags = 0, > + .bCopyProtect = 0, > + }, > +}; > + > +static struct uvcg_format_ptr uvcg_format_ptr_mjpeg = { > + .fmt = &uvcg_format_mjpeg.fmt, > }; > > DECLARE_UVC_FRAME_MJPEG(1); > @@ -235,16 +341,45 @@ static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = { > .bDescriptorSubType = UVC_VS_FRAME_MJPEG, > .bFrameIndex = 1, > .bmCapabilities = 0, > - .wWidth = cpu_to_le16(640), > - .wHeight = cpu_to_le16(360), > - .dwMinBitRate = cpu_to_le32(18432000), > - .dwMaxBitRate = cpu_to_le32(55296000), > - .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), > - .dwDefaultFrameInterval = cpu_to_le32(666666), > + .wWidth = cpu_to_le16(UVCG_WIDTH_360P), > + .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), > + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), > + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), > + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), > + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), > .bFrameIntervalType = 3, > - .dwFrameInterval[0] = cpu_to_le32(666666), > - .dwFrameInterval[1] = cpu_to_le32(1000000), > - .dwFrameInterval[2] = cpu_to_le32(5000000), > + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), > + .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), > + .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), > +}; > + > +static u32 uvcg_frame_mjpeg_360p_dw_frame_interval[] = { > + [0] = UVCG_FRM_INTERV_0_360P, > + [1] = UVCG_FRM_INTERV_1_360P, > + [2] = UVCG_FRM_INTERV_2_360P, > +}; > + > +static const struct uvcg_frame uvcg_frame_mjpeg_360p = { > + .fmt_type = UVCG_MJPEG, > + .frame = { > + .b_length = UVC_DT_FRAME_MJPEG_SIZE(3), > + .b_descriptor_type = USB_DT_CS_INTERFACE, > + .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, > + .b_frame_index = 1, > + .bm_capabilities = 0, > + .w_width = UVCG_WIDTH_360P, > + .w_height = UVCG_HEIGHT_360P, > + .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, > + .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, > + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, > + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, > + .b_frame_interval_type = 3, > + }, > + .dw_frame_interval = uvcg_frame_mjpeg_360p_dw_frame_interval, > +}; > + > +static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_360p = { > + .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_360p, > }; > > static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { > @@ -253,23 +388,44 @@ static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { > .bDescriptorSubType = UVC_VS_FRAME_MJPEG, > .bFrameIndex = 2, > .bmCapabilities = 0, > - .wWidth = cpu_to_le16(1280), > - .wHeight = cpu_to_le16(720), > - .dwMinBitRate = cpu_to_le32(29491200), > - .dwMaxBitRate = cpu_to_le32(29491200), > - .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), > - .dwDefaultFrameInterval = cpu_to_le32(5000000), > + .wWidth = cpu_to_le16(UVCG_WIDTH_720P), > + .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), > + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), > + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), > + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), > + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), > .bFrameIntervalType = 1, > - .dwFrameInterval[0] = cpu_to_le32(5000000), > + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), > }; > > -static const struct uvc_color_matching_descriptor uvc_color_matching = { > - .bLength = UVC_DT_COLOR_MATCHING_SIZE, > - .bDescriptorType = USB_DT_CS_INTERFACE, > - .bDescriptorSubType = UVC_VS_COLORFORMAT, > - .bColorPrimaries = 1, > - .bTransferCharacteristics = 1, > - .bMatrixCoefficients = 4, > +static u32 uvcg_frame_mjpeg_720p_dw_frame_interval[] = { > + [0] = UVCG_FRM_INTERV_0_720P, > +}; > + > +static const struct uvcg_frame uvcg_frame_mjpeg_720p = { > + .fmt_type = UVCG_MJPEG, > + .frame = { > + .b_length = UVC_DT_FRAME_MJPEG_SIZE(1), > + .b_descriptor_type = USB_DT_CS_INTERFACE, > + .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, > + .b_frame_index = 2, > + .bm_capabilities = 0, > + .w_width = UVCG_WIDTH_720P, > + .w_height = UVCG_HEIGHT_720P, > + .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, > + .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, > + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, > + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, > + .b_frame_interval_type = 1, > + }, > + .dw_frame_interval = uvcg_frame_mjpeg_720p_dw_frame_interval, > +}; > + > +static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_720p = { > + .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_720p, > +}; > + > +static struct uvcg_streaming_header uvcg_streaming_header = { > }; > > static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = { > @@ -290,40 +446,40 @@ static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = { > > static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = { > (const struct uvc_descriptor_header *) &uvc_input_header, > - (const struct uvc_descriptor_header *) &uvc_format_yuv, > + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, > (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, > (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, > - (const struct uvc_descriptor_header *) &uvc_color_matching, > - (const struct uvc_descriptor_header *) &uvc_format_mjpg, > + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, > + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, > (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, > (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, > - (const struct uvc_descriptor_header *) &uvc_color_matching, > + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, > NULL, > }; > > static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { > (const struct uvc_descriptor_header *) &uvc_input_header, > - (const struct uvc_descriptor_header *) &uvc_format_yuv, > + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, > (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, > (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, > - (const struct uvc_descriptor_header *) &uvc_color_matching, > - (const struct uvc_descriptor_header *) &uvc_format_mjpg, > + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, > + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, > (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, > (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, > - (const struct uvc_descriptor_header *) &uvc_color_matching, > + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, > NULL, > }; > > static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = { > (const struct uvc_descriptor_header *) &uvc_input_header, > - (const struct uvc_descriptor_header *) &uvc_format_yuv, > + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, > (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, > (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, > - (const struct uvc_descriptor_header *) &uvc_color_matching, > - (const struct uvc_descriptor_header *) &uvc_format_mjpg, > + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, > + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, > (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, > (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, > - (const struct uvc_descriptor_header *) &uvc_color_matching, > + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, > NULL, > }; > > @@ -387,6 +543,23 @@ webcam_bind(struct usb_composite_dev *cdev) > uvc_opts->hs_streaming = uvc_hs_streaming_cls; > uvc_opts->ss_streaming = uvc_ss_streaming_cls; > > + INIT_LIST_HEAD(&uvcg_format_yuv.fmt.frames); > + list_add_tail(&uvcg_frame_ptr_yuv_360p.entry, &uvcg_format_yuv.fmt.frames); > + list_add_tail(&uvcg_frame_ptr_yuv_720p.entry, &uvcg_format_yuv.fmt.frames); > + uvcg_format_yuv.fmt.num_frames = 2; > + > + INIT_LIST_HEAD(&uvcg_format_mjpeg.fmt.frames); > + list_add_tail(&uvcg_frame_ptr_mjpeg_360p.entry, &uvcg_format_mjpeg.fmt.frames); > + list_add_tail(&uvcg_frame_ptr_mjpeg_720p.entry, &uvcg_format_mjpeg.fmt.frames); > + uvcg_format_mjpeg.fmt.num_frames = 2; > + > + INIT_LIST_HEAD(&uvcg_streaming_header.formats); > + list_add_tail(&uvcg_format_ptr_yuv.entry, &uvcg_streaming_header.formats); > + list_add_tail(&uvcg_format_ptr_mjpeg.entry, &uvcg_streaming_header.formats); > + uvcg_streaming_header.num_fmt = 2; > + > + uvc_opts->header = &uvcg_streaming_header; > + > /* Allocate string descriptor numbers ... note that string contents > * can be overridden by the composite_dev glue. > */ > > base-commit: 33cc938e65a98f1d29d0a18403dbbee050dcad9a > prerequisite-patch-id: 5ebe1b40adede82d8413ff25a9e69f3e6b9fdfa6 > prerequisite-patch-id: 0525706498a65e3ffe25cb6ee19462da9ae6f5b5 > prerequisite-patch-id: 087583ddbd1db16eb07a5ae74683d781c4392470 > prerequisite-patch-id: 8f587de5eda5b35253bd5a320344a0797fe5812f > prerequisite-patch-id: 3a134c208a4115c8bec97b531b6a37a1d2d000b4 > prerequisite-patch-id: c5d30c7201e25a4b6871cb929a60f241cb05797f > prerequisite-patch-id: 3285282277d41ea3b0e1cca7ca837b14885097f3 > prerequisite-patch-id: 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449f73baf6f6222d3b4498ebc46f9284922594f6 > prerequisite-patch-id: 1159473e2aec02edddd624dfbd6b74ce58eac9fb > prerequisite-patch-id: 124e5f0304a8d702eee4558f2d45caa08d3d9948 > prerequisite-patch-id: 84faa8bf25a31c1120b3982e9c8fa90552c9e7bc > prerequisite-patch-id: 2b7cc6947b034902e3834b70202d75a1a7394e10 > prerequisite-patch-id: f2328625ae2193c3c8e336b154b62030940cece8 > prerequisite-patch-id: 5a00737b1f20b86865e5e99c3cbea27de9ae8438 > prerequisite-patch-id: c1723ec04df1fcfcdab13447ab574aa6423c567f > prerequisite-patch-id: 857a8e829413a285adde8881468fd52f1e2019c1 > prerequisite-patch-id: a0e43d95e98b20be3cc6e260ef436da026c9b42f > prerequisite-patch-id: 4c9d15f7b9d2732fec205ab0c3e18aa0904d9d63 > prerequisite-patch-id: 4cf8e4cb3d11fa7269b4781e9839500a22094c86 > prerequisite-patch-id: 143b73d94d7ba5130e229c269ea41ce192bb0bf0 > prerequisite-patch-id: bd3e6b52b02d5937eb9084da3bfd5014c801ab93 > prerequisite-patch-id: a63f7ac4e4e6eacfa5810bfb03b7369f7d010a23 > prerequisite-patch-id: a70eb8f4c1a57b1dd8928c70d694bcd7d51483c0 > prerequisite-patch-id: 555dd4f8f7da8ba8b7e7c10e96116c445e497c33 > prerequisite-patch-id: cf950631402b9f5d61f32f2a37b1b073719847d4 > prerequisite-patch-id: cd2377dfb0b4d63839101e674ebe3604ddb8a518 > prerequisite-patch-id: 84318df68e1bc99a62363f70f6f0e059855b9be7 > prerequisite-patch-id: 5c07ef2a50cecc614b6a61a0d8f6a4f951509428 I just noticed that I bumped the kernel to v6.7-rc5, but while formatting the patch I re-used the old command with the old --base. So git dutifully generated all the prerequisite-patch-id. So be informed that this is rebased on top of v6.7-rc5. Regards, Andrzej
On Tue, Dec 12, 2023 at 08:05:17PM +0100, Andrzej Pietrasiewicz wrote: > commit 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls") > > has rendered the precomposed (aka legacy) webcam gadget unloadable. Why the extra blank line here? > base-commit: 33cc938e65a98f1d29d0a18403dbbee050dcad9a > prerequisite-patch-id: 5ebe1b40adede82d8413ff25a9e69f3e6b9fdfa6 > prerequisite-patch-id: 0525706498a65e3ffe25cb6ee19462da9ae6f5b5 <long lines sniped> That's crazy, are they all really needed? confused, greg k-h
Hi Greg, W dniu 15.12.2023 o 13:47, Greg Kroah-Hartman pisze: > On Tue, Dec 12, 2023 at 08:05:17PM +0100, Andrzej Pietrasiewicz wrote: >> commit 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls") >> >> has rendered the precomposed (aka legacy) webcam gadget unloadable. > > Why the extra blank line here? Readability? No problem deleting it, though. > >> base-commit: 33cc938e65a98f1d29d0a18403dbbee050dcad9a >> prerequisite-patch-id: 5ebe1b40adede82d8413ff25a9e69f3e6b9fdfa6 >> prerequisite-patch-id: 0525706498a65e3ffe25cb6ee19462da9ae6f5b5 > > <long lines sniped> > > That's crazy, are they all really needed? > I already explained that the patch was rebased on top of v6.7-rc5 and, consequently, these were not needed. Sending a v5. Regards, Andrzej
diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index 786379f1b7b7..3b46de85ca01 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -960,7 +960,8 @@ static void uvc_free(struct usb_function *f) struct uvc_device *uvc = to_uvc(f); struct f_uvc_opts *opts = container_of(f->fi, struct f_uvc_opts, func_inst); - config_item_put(&uvc->header->item); + if (!opts->header) + config_item_put(&uvc->header->item); --opts->refcnt; kfree(uvc); } @@ -1052,25 +1053,29 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi) uvc->desc.hs_streaming = opts->hs_streaming; uvc->desc.ss_streaming = opts->ss_streaming; - streaming = config_group_find_item(&opts->func_inst.group, "streaming"); - if (!streaming) - goto err_config; - - header = config_group_find_item(to_config_group(streaming), "header"); - config_item_put(streaming); - if (!header) - goto err_config; - - h = config_group_find_item(to_config_group(header), "h"); - config_item_put(header); - if (!h) - goto err_config; - - uvc->header = to_uvcg_streaming_header(h); - if (!uvc->header->linked) { - mutex_unlock(&opts->lock); - kfree(uvc); - return ERR_PTR(-EBUSY); + if (opts->header) { + uvc->header = opts->header; + } else { + streaming = config_group_find_item(&opts->func_inst.group, "streaming"); + if (!streaming) + goto err_config; + + header = config_group_find_item(to_config_group(streaming), "header"); + config_item_put(streaming); + if (!header) + goto err_config; + + h = config_group_find_item(to_config_group(header), "h"); + config_item_put(header); + if (!h) + goto err_config; + + uvc->header = to_uvcg_streaming_header(h); + if (!uvc->header->linked) { + mutex_unlock(&opts->lock); + kfree(uvc); + return ERR_PTR(-EBUSY); + } } uvc->desc.extension_units = &opts->extension_units; diff --git a/drivers/usb/gadget/function/u_uvc.h b/drivers/usb/gadget/function/u_uvc.h index 1ce58f61253c..3ac392cbb779 100644 --- a/drivers/usb/gadget/function/u_uvc.h +++ b/drivers/usb/gadget/function/u_uvc.h @@ -98,6 +98,12 @@ struct f_uvc_opts { */ struct mutex lock; int refcnt; + + /* + * Only for legacy gadget. Shall be NULL for configfs-composed gadgets, + * which is guaranteed by alloc_inst implementation of f_uvc doing kzalloc. + */ + struct uvcg_streaming_header *header; }; #endif /* U_UVC_H */ diff --git a/drivers/usb/gadget/legacy/webcam.c b/drivers/usb/gadget/legacy/webcam.c index c06dd1af7a0c..c395438d3978 100644 --- a/drivers/usb/gadget/legacy/webcam.c +++ b/drivers/usb/gadget/legacy/webcam.c @@ -12,6 +12,7 @@ #include <linux/usb/video.h> #include "u_uvc.h" +#include "uvc_configfs.h" USB_GADGET_COMPOSITE_OPTIONS(); @@ -84,8 +85,6 @@ static struct usb_device_descriptor webcam_device_descriptor = { .bNumConfigurations = 0, /* dynamic */ }; -DECLARE_UVC_HEADER_DESCRIPTOR(1); - static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = { .bLength = UVC_DT_HEADER_SIZE(1), .bDescriptorType = USB_DT_CS_INTERFACE, @@ -158,43 +157,112 @@ static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = { .bmaControls[1][0] = 4, }; -static const struct uvc_format_uncompressed uvc_format_yuv = { - .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, - .bFormatIndex = 1, - .bNumFrameDescriptors = 2, - .guidFormat = - { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}, - .bBitsPerPixel = 16, - .bDefaultFrameIndex = 1, - .bAspectRatioX = 0, - .bAspectRatioY = 0, - .bmInterlaceFlags = 0, - .bCopyProtect = 0, +static const struct uvcg_color_matching uvcg_color_matching = { + .desc = { + .bLength = UVC_DT_COLOR_MATCHING_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_VS_COLORFORMAT, + .bColorPrimaries = 1, + .bTransferCharacteristics = 1, + .bMatrixCoefficients = 4, + }, +}; + +static struct uvcg_uncompressed uvcg_format_yuv = { + .fmt = { + .type = UVCG_UNCOMPRESSED, + /* add to .frames and fill .num_frames at runtime */ + .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, + }, + .desc = { + .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, + .bFormatIndex = 1, + .bNumFrameDescriptors = 2, + .guidFormat = { + 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 + }, + .bBitsPerPixel = 16, + .bDefaultFrameIndex = 1, + .bAspectRatioX = 0, + .bAspectRatioY = 0, + .bmInterlaceFlags = 0, + .bCopyProtect = 0, + }, +}; + +static struct uvcg_format_ptr uvcg_format_ptr_yuv = { + .fmt = &uvcg_format_yuv.fmt, }; DECLARE_UVC_FRAME_UNCOMPRESSED(1); DECLARE_UVC_FRAME_UNCOMPRESSED(3); +#define UVCG_WIDTH_360P 640 +#define UVCG_HEIGHT_360P 360 +#define UVCG_MIN_BITRATE_360P 18432000 +#define UVCG_MAX_BITRATE_360P 55296000 +#define UVCG_MAX_VIDEO_FB_SZ_360P 460800 +#define UVCG_FRM_INTERV_0_360P 666666 +#define UVCG_FRM_INTERV_1_360P 1000000 +#define UVCG_FRM_INTERV_2_360P 5000000 +#define UVCG_DEFAULT_FRM_INTERV_360P UVCG_FRM_INTERV_0_360P + static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = { .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, .bFrameIndex = 1, .bmCapabilities = 0, - .wWidth = cpu_to_le16(640), - .wHeight = cpu_to_le16(360), - .dwMinBitRate = cpu_to_le32(18432000), - .dwMaxBitRate = cpu_to_le32(55296000), - .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), - .dwDefaultFrameInterval = cpu_to_le32(666666), + .wWidth = cpu_to_le16(UVCG_WIDTH_360P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), .bFrameIntervalType = 3, - .dwFrameInterval[0] = cpu_to_le32(666666), - .dwFrameInterval[1] = cpu_to_le32(1000000), - .dwFrameInterval[2] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), + .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), + .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), +}; + +static u32 uvcg_frame_yuv_360p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_360P, + [1] = UVCG_FRM_INTERV_1_360P, + [2] = UVCG_FRM_INTERV_2_360P, +}; + +static const struct uvcg_frame uvcg_frame_yuv_360p = { + .fmt_type = UVCG_UNCOMPRESSED, + .frame = { + .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, + .b_frame_index = 1, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_360P, + .w_height = UVCG_HEIGHT_360P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, + .b_frame_interval_type = 3, + }, + .dw_frame_interval = uvcg_frame_yuv_360p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_360p = { + .frm = (struct uvcg_frame *)&uvcg_frame_yuv_360p, }; +#define UVCG_WIDTH_720P 1280 +#define UVCG_HEIGHT_720P 720 +#define UVCG_MIN_BITRATE_720P 29491200 +#define UVCG_MAX_BITRATE_720P 29491200 +#define UVCG_MAX_VIDEO_FB_SZ_720P 1843200 +#define UVCG_FRM_INTERV_0_720P 5000000 +#define UVCG_DEFAULT_FRM_INTERV_720P UVCG_FRM_INTERV_0_720P static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), @@ -202,28 +270,66 @@ static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, .bFrameIndex = 2, .bmCapabilities = 0, - .wWidth = cpu_to_le16(1280), - .wHeight = cpu_to_le16(720), - .dwMinBitRate = cpu_to_le32(29491200), - .dwMaxBitRate = cpu_to_le32(29491200), - .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), - .dwDefaultFrameInterval = cpu_to_le32(5000000), + .wWidth = cpu_to_le16(UVCG_WIDTH_720P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), .bFrameIntervalType = 1, - .dwFrameInterval[0] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), }; -static const struct uvc_format_mjpeg uvc_format_mjpg = { - .bLength = UVC_DT_FORMAT_MJPEG_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, - .bFormatIndex = 2, - .bNumFrameDescriptors = 2, - .bmFlags = 0, - .bDefaultFrameIndex = 1, - .bAspectRatioX = 0, - .bAspectRatioY = 0, - .bmInterlaceFlags = 0, - .bCopyProtect = 0, +static u32 uvcg_frame_yuv_720p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_720P, +}; + +static const struct uvcg_frame uvcg_frame_yuv_720p = { + .fmt_type = UVCG_UNCOMPRESSED, + .frame = { + .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, + .b_frame_index = 2, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_720P, + .w_height = UVCG_HEIGHT_720P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, + .b_frame_interval_type = 1, + }, + .dw_frame_interval = uvcg_frame_yuv_720p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_720p = { + .frm = (struct uvcg_frame *)&uvcg_frame_yuv_720p, +}; + +static struct uvcg_mjpeg uvcg_format_mjpeg = { + .fmt = { + .type = UVCG_MJPEG, + /* add to .frames and fill .num_frames at runtime */ + .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, + }, + .desc = { + .bLength = UVC_DT_FORMAT_MJPEG_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, + .bFormatIndex = 2, + .bNumFrameDescriptors = 2, + .bmFlags = 0, + .bDefaultFrameIndex = 1, + .bAspectRatioX = 0, + .bAspectRatioY = 0, + .bmInterlaceFlags = 0, + .bCopyProtect = 0, + }, +}; + +static struct uvcg_format_ptr uvcg_format_ptr_mjpeg = { + .fmt = &uvcg_format_mjpeg.fmt, }; DECLARE_UVC_FRAME_MJPEG(1); @@ -235,16 +341,45 @@ static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = { .bDescriptorSubType = UVC_VS_FRAME_MJPEG, .bFrameIndex = 1, .bmCapabilities = 0, - .wWidth = cpu_to_le16(640), - .wHeight = cpu_to_le16(360), - .dwMinBitRate = cpu_to_le32(18432000), - .dwMaxBitRate = cpu_to_le32(55296000), - .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), - .dwDefaultFrameInterval = cpu_to_le32(666666), + .wWidth = cpu_to_le16(UVCG_WIDTH_360P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), .bFrameIntervalType = 3, - .dwFrameInterval[0] = cpu_to_le32(666666), - .dwFrameInterval[1] = cpu_to_le32(1000000), - .dwFrameInterval[2] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), + .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), + .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), +}; + +static u32 uvcg_frame_mjpeg_360p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_360P, + [1] = UVCG_FRM_INTERV_1_360P, + [2] = UVCG_FRM_INTERV_2_360P, +}; + +static const struct uvcg_frame uvcg_frame_mjpeg_360p = { + .fmt_type = UVCG_MJPEG, + .frame = { + .b_length = UVC_DT_FRAME_MJPEG_SIZE(3), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, + .b_frame_index = 1, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_360P, + .w_height = UVCG_HEIGHT_360P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, + .b_frame_interval_type = 3, + }, + .dw_frame_interval = uvcg_frame_mjpeg_360p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_360p = { + .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_360p, }; static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { @@ -253,23 +388,44 @@ static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { .bDescriptorSubType = UVC_VS_FRAME_MJPEG, .bFrameIndex = 2, .bmCapabilities = 0, - .wWidth = cpu_to_le16(1280), - .wHeight = cpu_to_le16(720), - .dwMinBitRate = cpu_to_le32(29491200), - .dwMaxBitRate = cpu_to_le32(29491200), - .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), - .dwDefaultFrameInterval = cpu_to_le32(5000000), + .wWidth = cpu_to_le16(UVCG_WIDTH_720P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), .bFrameIntervalType = 1, - .dwFrameInterval[0] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), }; -static const struct uvc_color_matching_descriptor uvc_color_matching = { - .bLength = UVC_DT_COLOR_MATCHING_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = UVC_VS_COLORFORMAT, - .bColorPrimaries = 1, - .bTransferCharacteristics = 1, - .bMatrixCoefficients = 4, +static u32 uvcg_frame_mjpeg_720p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_720P, +}; + +static const struct uvcg_frame uvcg_frame_mjpeg_720p = { + .fmt_type = UVCG_MJPEG, + .frame = { + .b_length = UVC_DT_FRAME_MJPEG_SIZE(1), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, + .b_frame_index = 2, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_720P, + .w_height = UVCG_HEIGHT_720P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, + .b_frame_interval_type = 1, + }, + .dw_frame_interval = uvcg_frame_mjpeg_720p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_720p = { + .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_720p, +}; + +static struct uvcg_streaming_header uvcg_streaming_header = { }; static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = { @@ -290,40 +446,40 @@ static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = { static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = { (const struct uvc_descriptor_header *) &uvc_input_header, - (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, - (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, NULL, }; static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { (const struct uvc_descriptor_header *) &uvc_input_header, - (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, - (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, NULL, }; static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = { (const struct uvc_descriptor_header *) &uvc_input_header, - (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, - (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, NULL, }; @@ -387,6 +543,23 @@ webcam_bind(struct usb_composite_dev *cdev) uvc_opts->hs_streaming = uvc_hs_streaming_cls; uvc_opts->ss_streaming = uvc_ss_streaming_cls; + INIT_LIST_HEAD(&uvcg_format_yuv.fmt.frames); + list_add_tail(&uvcg_frame_ptr_yuv_360p.entry, &uvcg_format_yuv.fmt.frames); + list_add_tail(&uvcg_frame_ptr_yuv_720p.entry, &uvcg_format_yuv.fmt.frames); + uvcg_format_yuv.fmt.num_frames = 2; + + INIT_LIST_HEAD(&uvcg_format_mjpeg.fmt.frames); + list_add_tail(&uvcg_frame_ptr_mjpeg_360p.entry, &uvcg_format_mjpeg.fmt.frames); + list_add_tail(&uvcg_frame_ptr_mjpeg_720p.entry, &uvcg_format_mjpeg.fmt.frames); + uvcg_format_mjpeg.fmt.num_frames = 2; + + INIT_LIST_HEAD(&uvcg_streaming_header.formats); + list_add_tail(&uvcg_format_ptr_yuv.entry, &uvcg_streaming_header.formats); + list_add_tail(&uvcg_format_ptr_mjpeg.entry, &uvcg_streaming_header.formats); + uvcg_streaming_header.num_fmt = 2; + + uvc_opts->header = &uvcg_streaming_header; + /* Allocate string descriptor numbers ... note that string contents * can be overridden by the composite_dev glue. */
commit 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls") has rendered the precomposed (aka legacy) webcam gadget unloadable. uvc_alloc() since then has depended on certain config groups being available in configfs tree related to the UVC function. However, legacy gadgets do not create anything in configfs, so uvc_alloc() must fail with -ENOENT no matter what. This patch mimics the required configfs hierarchy to satisfy the code which inspects formats and frames found in uvcg_streaming_header. This has been tested with guvcview on the host side, using vivid as a source of video stream on the device side and using the userspace program found at https://gitlab.freedesktop.org/camera/uvc-gadget.git. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Fixes: 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls") --- v3..v4: - silenced "initializer element is not constant" warnings on old compiles (created and used a bunch of #defines instead of referring to a static constr struct /members/, which in the C language is not considered const) v2..v3: - fixed another typo (actually use uvcg_frame_mjpeg_720p where it should be used instead of its 360p counterpart) - eliminated sparse warnings by reverting the effect of cpu_to_le[16|32] while assigning to uvcg_frame members v1..v2: - fixed a typo (missing character) in one of uvcg_frame_mjpeg_720p's members drivers/usb/gadget/function/f_uvc.c | 45 ++-- drivers/usb/gadget/function/u_uvc.h | 6 + drivers/usb/gadget/legacy/webcam.c | 333 +++++++++++++++++++++------- 3 files changed, 284 insertions(+), 100 deletions(-) base-commit: 33cc938e65a98f1d29d0a18403dbbee050dcad9a prerequisite-patch-id: 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