/*
* Renesas USB driver
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
#include "common.h"
/*
* struct
*/
struct usbhsg_request {
struct usb_request req;
struct usbhs_pkt pkt;
};
#define EP_NAME_SIZE 8
struct usbhsg_gpriv;
struct usbhsg_uep {
struct usb_ep ep;
struct usbhs_pipe *pipe;
char ep_name[EP_NAME_SIZE];
struct usbhsg_gpriv *gpriv;
};
struct usbhsg_gpriv {
struct usb_gadget gadget;
struct usbhs_mod mod;
struct usbhsg_uep *uep;
int uep_size;
struct usb_gadget_driver *driver;
struct usb_phy *transceiver;
bool vbus_active;
u32 status;
#define USBHSG_STATUS_STARTED (1 << 0)
#define USBHSG_STATUS_REGISTERD (1 << 1)
#define USBHSG_STATUS_WEDGE (1 << 2)
#define USBHSG_STATUS_SELF_POWERED (1 << 3)
#define USBHSG_STATUS_SOFT_CONNECT (1 << 4)
};
struct usbhsg_recip_handle {
char *name;
int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
struct usb_ctrlrequest *ctrl);
int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
struct usb_ctrlrequest *ctrl);
int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
struct usb_ctrlrequest *ctrl);
};
/*
* macro
*/
#define usbhsg_priv_to_gpriv(priv) \
container_of( \
usbhs_mod_get(priv, USBHS_GADGET), \
struct usbhsg_gpriv, mod)
#define __usbhsg_for_each_uep(start, pos, g, i) \
for ((i) = start; \
((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \
(i)++)
#define usbhsg_for_each_uep(pos, gpriv, i) \
__usbhsg_for_each_uep(1, pos, gpriv, i)
#define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \
__usbhsg_for_each_uep(0, pos, gpriv, i)
#define usbhsg_gadget_to_gpriv(g)\
container_of(g, struct usbhsg_gpriv, gadget)
#define usbhsg_req_to_ureq(r)\
container_of(r, struct usbhsg_request, req)
#define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep)
#define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv)
#define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv)
#define usbhsg_gpriv_to_dcp(gp) ((gp)->uep)
#define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i)
#define usbhsg_uep_to_gpriv(u) ((u)->gpriv)
#define usbhsg_uep_to_pipe(u) ((u)->pipe)
#define usbhsg_pipe_to_uep(p) ((p)->mod_private)
#define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv))
#define usbhsg_ureq_to_pkt(u) (&(u)->pkt)
#define usbhsg_pkt_to_ureq(i) \
container_of(i, struct usbhsg_request, pkt)
#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN)
/* status */
#define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0)
#define usbhsg_status_set(gp, b) (gp->status |= b)
#define usbhsg_status_clr(gp, b) (gp->status &= ~b)
#define usbhsg_status_has(gp, b) (gp->status & b)
/*
* queue push/pop
*/
static void __usbhsg_queue_pop(struct usbhsg_uep *uep,
struct usbhsg_request *ureq,
int status)
{
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
if (pipe)
dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
ureq->req.status = status;
spin_unlock(usbhs_priv_to_lock(priv));
usb_gadget_giveback_request(&uep->ep, &ureq->req);
spin_lock(usbhs_priv_to_lock(priv));
}
static void usbhsg_queue_pop(struct usbhsg_uep *uep,
struct usbhsg_request *ureq,
int status)
{
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
unsigned long flags;
usbhs_lock(priv, flags