/*
* usb module start/end
*/
static int usbhsg_try_start(struct usbhs_priv *priv, u32 status)
{
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv);
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
struct device *dev = usbhs_priv_to_dev(priv);
unsigned long flags;
int ret = 0;
/******************** spin lock ********************/
usbhs_lock(priv, flags);
usbhsg_status_set(gpriv, status);
if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
ret = -1; /* not ready */
usbhs_unlock(priv, flags);
/******************** spin unlock ********************/
if (ret < 0)
return 0; /* not ready is not error */
/*
* enable interrupt and systems if ready
*/
dev_dbg(dev, "start gadget\n");
/*
* pipe initialize and enable DCP
*/
usbhs_fifo_init(priv);
usbhs_pipe_init(priv,
usbhsg_dma_map_ctrl);
/* dcp init instead of usbhsg_ep_enable() */
dcp->pipe = usbhs_dcp_malloc(priv);
dcp->pipe->mod_private = dcp;
usbhs_pipe_config_update(dcp->pipe, 0, 0, 64);
/*
* system config enble
* - HI speed
* - function
* - usb module
*/
usbhs_sys_function_ctrl(priv, 1);
usbhsg_update_pullup(priv);
/*
* enable irq callback
*/
mod->irq_dev_state = usbhsg_irq_dev_state;
mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
usbhs_irq_callback_update(priv, mod);
return 0;
}
/*
*
* usb_ep_ops
*
*/
static int usbhsg_ep_enable(struct usb_ep *ep,
const struct usb_endpoint_descriptor *desc)
{
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
struct usbhs_pipe *pipe;
int ret = -EIO;
unsigned long flags;
usbhs_lock(priv, flags);
/*
* if it already have pipe,
* nothing to do
*/
if (uep->pipe) {
usbhs_pipe_clear(uep->pipe);
usbhs_pipe_sequence_data0(uep->pipe);
ret = 0;
goto usbhsg_ep_enable_end;
}
pipe = usbhs_pipe_malloc(priv,
usb_endpoint_type(desc),
usb_endpoint_dir_in(desc));
if (pipe) {
uep->pipe = pipe;
pipe->mod_private = uep;
/* set epnum / maxp */
usbhs_pipe_config_update(pipe, 0,
usb_endpoint_num(desc),
usb_endpoint_maxp(desc));
/*
* usbhs_fifo_dma_push/pop_handler try to
* use dmaengine if possible.
* It will use pio handler if impossible.
*/
if (usb_endpoint_dir_in(desc)) {
pipe->handler = &usbhs_fifo_dma_push_handler;
} else {
pipe->handler = &usbhs_fifo_dma_pop_handler;
usbhs_xxxsts_clear(priv, BRDYSTS,
usbhs_pipe_number(pipe));
}
ret = 0;
}
usbhsg_ep_enable_end:
usbhs_unlock(priv, flags);
return ret;
}
static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv,
struct urb *urb)
{
struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
struct usbhs_pipe *pipe;
struct usb_endpoint_descriptor *desc = &urb->ep->desc;
struct device *dev = usbhs_priv_to_dev(priv);
unsigned long flags;
int dir_in_req = !!usb_pipein(urb->pipe);
int is_dcp = usb_endpoint_xfer_control(desc);
int i, dir_in;
int ret = -EBUSY;
/******************** spin lock ********************/
usbhs_lock(priv, flags);
/*
* if uep has been attached to pipe,
* reuse it
*/
if (usbhsh_uep_to_pipe(uep)) {
ret = 0;
goto usbhsh_pipe_attach_done;
}
usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
/* check pipe type */
if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc)))
continue;
/* check pipe direction if normal pipe */
if (!is_dcp) {
dir_in = !!usbhs_pipe_is_dir_in(pipe);
if (0 != (dir_in - dir_in_req))
continue;
}
/* check pipe is free */
if (usbhsh_pipe_to_uep(pipe))
continue;
/*
* attach pipe to uep
*
* usbhs_pipe_config_update() should be called after
* usbhs_set_device_config()
* see
* DCPMAXP/PIPEMAXP
*/
usbhsh_uep_to_pipe(uep) = pipe;
usbhsh_pipe_to_uep(pipe) = uep;
usbhs_pipe_config_update(pipe,
usbhsh_device_number(hpriv, udev),
usb_endpoint_num(desc),
usb_endpoint_maxp(desc));
dev_dbg(dev, "%s [%d-%d(%s:%s)]\n", __func__,
usbhsh_device_number(hpriv, udev),
usb_endpoint_num(desc),
usbhs_pipe_name(pipe),
dir_in_req ? "in" : "out");
ret = 0;
break;
}
usbhsh_pipe_attach_done:
if (0 == ret)
uep->counter++;
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
return ret;
}
