Use the new function interface of f_uvc.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/usb/gadget/legacy/Kconfig | 1 +
drivers/usb/gadget/legacy/Makefile | 2 +-
drivers/usb/gadget/legacy/webcam.c | 53 +++++++++++++++++++++++++++-----------
3 files changed, 40 insertions(+), 16 deletions(-)
diff --git a/drivers/usb/gadget/legacy/Kconfig b/drivers/usb/gadget/legacy/Kconfig
index aa376f0..8efa3d1 100644
--- a/drivers/usb/gadget/legacy/Kconfig
+++ b/drivers/usb/gadget/legacy/Kconfig
@@ -466,6 +466,7 @@ config USB_G_WEBCAM
depends on VIDEO_DEV
select USB_LIBCOMPOSITE
select VIDEOBUF2_VMALLOC
+ select USB_F_UVC
help
The Webcam Gadget acts as a composite USB Audio and Video Class
device. It provides a userspace API to process UVC control requests
diff --git a/drivers/usb/gadget/legacy/Makefile b/drivers/usb/gadget/legacy/Makefile
index 99ce125..a11aad5 100644
--- a/drivers/usb/gadget/legacy/Makefile
+++ b/drivers/usb/gadget/legacy/Makefile
@@ -19,7 +19,7 @@ g_multi-y := multi.o
g_hid-y := hid.o
g_dbgp-y := dbgp.o
g_nokia-y := nokia.o
-g_webcam-y := webcam.o ../function/uvc_queue.o ../function/uvc_v4l2.o ../function/uvc_video.o
+g_webcam-y := webcam.o
g_ncm-y := ncm.o
g_acm_ms-y := acm_ms.o
g_tcm_usb_gadget-y := tcm_usb_gadget.o
diff --git a/drivers/usb/gadget/legacy/webcam.c b/drivers/usb/gadget/legacy/webcam.c
index 50d27db..04a3da2 100644
--- a/drivers/usb/gadget/legacy/webcam.c
+++ b/drivers/usb/gadget/legacy/webcam.c
@@ -15,15 +15,7 @@
#include <linux/module.h>
#include <linux/usb/video.h>
-/*
- * Kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#define USBF_UVC_INCLUDED
-#include "f_uvc.c"
+#include "u_uvc.h"
USB_GADGET_COMPOSITE_OPTIONS();
@@ -79,6 +71,9 @@ static struct usb_gadget_strings *webcam_device_strings[] = {
NULL,
};
+static struct usb_function_instance *fi_uvc;
+static struct usb_function *f_uvc;
+
static struct usb_device_descriptor webcam_device_descriptor = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
@@ -342,11 +337,17 @@ static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = {
static int __init
webcam_config_bind(struct usb_configuration *c)
{
- return uvc_bind_config(c, uvc_fs_control_cls,
- uvc_ss_control_cls, uvc_fs_streaming_cls,
- uvc_hs_streaming_cls, uvc_ss_streaming_cls,
- streaming_interval, streaming_maxpacket,
- streaming_maxburst, trace);
+ int status = 0;
+
+ f_uvc = usb_get_function(fi_uvc);
+ if (IS_ERR(f_uvc))
+ return PTR_ERR(f_uvc);
+
+ status = usb_add_function(c, f_uvc);
+ if (status < 0)
+ usb_put_function(f_uvc);
+
+ return status;
}
static struct usb_configuration webcam_config_driver = {
@@ -360,14 +361,36 @@ static struct usb_configuration webcam_config_driver = {
static int /* __init_or_exit */
webcam_unbind(struct usb_composite_dev *cdev)
{
+ if (!IS_ERR_OR_NULL(f_uvc))
+ usb_put_function(f_uvc);
+ if (!IS_ERR_OR_NULL(fi_uvc))
+ usb_put_function_instance(fi_uvc);
return 0;
}
static int __init
webcam_bind(struct usb_composite_dev *cdev)
{
+ struct f_uvc_opts *uvc_opts;
int ret;
+ fi_uvc = usb_get_function_instance("uvc");
+ if (IS_ERR(fi_uvc))
+ return PTR_ERR(fi_uvc);
+
+ uvc_opts = container_of(fi_uvc, struct f_uvc_opts, func_inst);
+
+ uvc_opts->streaming_interval = streaming_interval;
+ uvc_opts->streaming_maxpacket = streaming_maxpacket;
+ uvc_opts->streaming_maxburst = streaming_maxburst;
+ uvc_set_trace_param(trace);
+
+ uvc_opts->fs_control = uvc_fs_control_cls;
+ uvc_opts->ss_control = uvc_ss_control_cls;
+ uvc_opts->fs_streaming = uvc_fs_streaming_cls;
+ uvc_opts->hs_streaming = uvc_hs_streaming_cls;
+ uvc_opts->ss_streaming = uvc_ss_streaming_cls;
+
/* Allocate string descriptor numbers ... note that string contents
* can be overridden by the composite_dev glue.
*/
@@ -391,7 +414,7 @@ webcam_bind(struct usb_composite_dev *cdev)
return 0;
error:
- webcam_unbind(cdev);
+ usb_put_function_instance(fi_uvc);
return ret;
}
--
1.9.1
--
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