From: Perr Zhang <strongbox8@zoho.com>
To: linux-usb@vger.kernel.org
Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
xbing@usb7.net, Perr Zhang <perr@usb7.net>
Subject: [PATCH] usb: f_uac1: adds support for SS and SSP
Date: Wed, 13 Dec 2023 19:21:06 +0800 [thread overview]
Message-ID: <20231213112106.605260-1-strongbox8@zoho.com> (raw)
From: Perr Zhang <perr@usb7.net>
Patch adds support of SS and SSP speed.
Tested with rockchip rk3399 dwc3
Signed-off-by: Perr Zhang <perr@usb7.net>
---
drivers/usb/gadget/function/f_uac1.c | 77 +++++++++++++++++++++++++++-
1 file changed, 75 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
index 6f0e1d803dc2..78634ea7863a 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -292,6 +292,77 @@ static struct usb_descriptor_header *f_audio_desc[] = {
NULL,
};
+/* Standard ISO OUT Endpoint Descriptor */
+static struct usb_endpoint_descriptor ss_as_out_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 4,
+};
+
+static struct usb_ss_ep_comp_descriptor ss_as_out_ep_desc_comp = {
+ .bLength = sizeof(ss_as_out_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ /* wBytesPerInterval = DYNAMIC */
+};
+
+/* Standard ISO OUT Endpoint Descriptor */
+static struct usb_endpoint_descriptor ss_as_in_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_SYNC_ASYNC
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 4,
+};
+
+static struct usb_ss_ep_comp_descriptor ss_as_in_ep_desc_comp = {
+ .bLength = sizeof(ss_as_in_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ /* wBytesPerInterval = DYNAMIC */
+};
+
+static struct usb_descriptor_header *f_audio_ss_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ //(struct usb_descriptor_header *)&as_out_ep_desc,
+ (struct usb_descriptor_header *)&ss_as_out_ep_desc,
+ (struct usb_descriptor_header *)&ss_as_out_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ //(struct usb_descriptor_header *)&as_in_ep_desc,
+ (struct usb_descriptor_header *)&ss_as_in_ep_desc,
+ (struct usb_descriptor_header *)&ss_as_in_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
enum {
STR_AC_IF,
STR_USB_OUT_IT,
@@ -1352,6 +1423,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
ep = usb_ep_autoconfig(cdev->gadget, &as_out_ep_desc);
if (!ep)
goto err_free_fu;
+ ss_as_out_ep_desc.bEndpointAddress = as_out_ep_desc.bEndpointAddress;
audio->out_ep = ep;
audio->out_ep->desc = &as_out_ep_desc;
}
@@ -1360,6 +1432,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
ep = usb_ep_autoconfig(cdev->gadget, &as_in_ep_desc);
if (!ep)
goto err_free_fu;
+ ss_as_in_ep_desc.bEndpointAddress = as_in_ep_desc.bEndpointAddress;
audio->in_ep = ep;
audio->in_ep->desc = &as_in_ep_desc;
}
@@ -1367,8 +1440,8 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
setup_descriptor(audio_opts);
/* copy descriptors, and track endpoint copies */
- status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL,
- NULL);
+ status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, f_audio_ss_desc,
+ f_audio_ss_desc);
if (status)
goto err_free_fu;
--
2.42.0
reply other threads:[~2023-12-13 11:36 UTC|newest]
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