140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/device.h>
|
|
#include <linux/usb/msm_hsusb.h>
|
|
#include <mach/usb_bam.h>
|
|
|
|
struct usb_qdss_bam_connect_info {
|
|
u32 usb_bam_pipe_idx;
|
|
u32 peer_pipe_idx;
|
|
u32 usb_bam_handle;
|
|
struct sps_mem_buffer *data_fifo;
|
|
};
|
|
|
|
static struct usb_qdss_bam_connect_info bam_info;
|
|
|
|
int send_sps_req(struct usb_ep *data_ep)
|
|
{
|
|
struct usb_request *req = NULL;
|
|
struct f_qdss *qdss = data_ep->driver_data;
|
|
struct usb_gadget *gadget = qdss->cdev->gadget;
|
|
u32 sps_params = 0;
|
|
|
|
pr_debug("send_sps_req\n");
|
|
|
|
req = usb_ep_alloc_request(data_ep, GFP_ATOMIC);
|
|
if (!req) {
|
|
pr_err("usb_ep_alloc_request failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (gadget_is_dwc3(gadget)) {
|
|
req->length = 32*1024;
|
|
sps_params = MSM_SPS_MODE | MSM_DISABLE_WB | MSM_INTERNAL_MEM |
|
|
bam_info.usb_bam_pipe_idx;
|
|
} else {
|
|
/* non DWC3 BAM requires req->length to be 0 */
|
|
req->length = 0;
|
|
sps_params = (MSM_SPS_MODE | bam_info.usb_bam_pipe_idx |
|
|
MSM_VENDOR_ID) & ~MSM_IS_FINITE_TRANSFER;
|
|
}
|
|
req->udc_priv = sps_params;
|
|
qdss->endless_req = req;
|
|
if (usb_ep_queue(data_ep, req, GFP_ATOMIC)) {
|
|
pr_err("send_sps_req: usb_ep_queue error\n");
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int set_qdss_data_connection(struct usb_gadget *gadget,
|
|
struct usb_ep *data_ep, u8 data_addr, int enable)
|
|
{
|
|
int res = 0;
|
|
u8 idx;
|
|
|
|
pr_debug("set_qdss_data_connection\n");
|
|
|
|
/* There is only one qdss pipe, so the pipe number can be set to 0 */
|
|
idx = usb_bam_get_connection_idx(gadget->name, QDSS_P_BAM,
|
|
PEER_PERIPHERAL_TO_USB, 0);
|
|
if (idx < 0) {
|
|
pr_err("%s: usb_bam_get_connection_idx failed\n", __func__);
|
|
return idx;
|
|
}
|
|
|
|
if (enable) {
|
|
res = usb_bam_connect(idx, &(bam_info.usb_bam_pipe_idx));
|
|
bam_info.data_fifo =
|
|
kzalloc(sizeof(struct sps_mem_buffer *), GFP_KERNEL);
|
|
if (!bam_info.data_fifo) {
|
|
pr_err("qdss_data_connection: memory alloc failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
usb_bam_set_qdss_core(gadget->name);
|
|
get_bam2bam_connection_info(idx,
|
|
&bam_info.usb_bam_handle,
|
|
&bam_info.usb_bam_pipe_idx, &bam_info.peer_pipe_idx,
|
|
NULL, bam_info.data_fifo);
|
|
|
|
msm_data_fifo_config(data_ep, bam_info.data_fifo->phys_base,
|
|
bam_info.data_fifo->size, bam_info.usb_bam_pipe_idx);
|
|
} else {
|
|
kfree(bam_info.data_fifo);
|
|
res = usb_bam_disconnect_pipe(idx);
|
|
if (res) {
|
|
pr_err("usb_bam_disconnection error\n");
|
|
return res;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
int init_data(struct usb_ep *ep)
|
|
{
|
|
struct f_qdss *qdss = ep->driver_data;
|
|
struct usb_gadget *gadget = qdss->cdev->gadget;
|
|
int res = 0;
|
|
|
|
pr_debug("init_data\n");
|
|
|
|
if (gadget_is_dwc3(gadget)) {
|
|
res = msm_ep_config(ep);
|
|
if (res)
|
|
pr_err("msm_ep_config failed\n");
|
|
} else {
|
|
pr_debug("QDSS is used with non DWC3 core\n");
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
int uninit_data(struct usb_ep *ep)
|
|
{
|
|
struct f_qdss *qdss = ep->driver_data;
|
|
struct usb_gadget *gadget = qdss->cdev->gadget;
|
|
int res = 0;
|
|
|
|
pr_err("uninit_data\n");
|
|
|
|
if (gadget_is_dwc3(gadget)) {
|
|
res = msm_ep_unconfig(ep);
|
|
if (res)
|
|
pr_err("msm_ep_unconfig failed\n");
|
|
}
|
|
|
|
return res;
|
|
}
|