This patch add usb gadget code to SuperH USBHS.
It is tested by g_serial.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
drivers/usb/gadget/Kconfig | 18 +
drivers/usb/gadget/gadget_chips.h | 9 +
drivers/usb/renesas_usbhs/Makefile | 2 +
drivers/usb/renesas_usbhs/mod.c | 17 +-
drivers/usb/renesas_usbhs/mod.h | 16 +
drivers/usb/renesas_usbhs/mod_gadget.c | 989 ++++++++++++++++++++++++++++++++
6 files changed, 1050 insertions(+), 1 deletions(-)
create mode 100644 drivers/usb/renesas_usbhs/mod_gadget.c
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index bc5123c..4c02b9f 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -260,6 +260,24 @@ config USB_R8A66597
default USB_GADGET
select USB_GADGET_SELECTED
+config USB_GADGET_RENESAS_USBHS
+ boolean "Renesas USBHS"
+ depends on USB_RENESAS_USBHS
+ select USB_GADGET_DUALSPEED
+ help
+ Renesas USBHS is a discrete USB host and peripheral controller
+ chip that supports both full and high speed USB 2.0 data transfers.
+ platform is able to configure endpoint (pipe) style
+
+ Say "y" to enable the gadget specific portion of the USBHS driver.
+
+
+config USB_RENESAS_USBHS_UDC
+ tristate
+ depends on USB_GADGET_RENESAS_USBHS
+ default USB_GADGET
+ select USB_GADGET_SELECTED
+
config USB_GADGET_PXA27X
boolean "PXA 27x"
depends on ARCH_PXA && (PXA27x || PXA3xx)
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index e896f63..ec3fd97 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -148,6 +148,12 @@
#define gadget_is_ci13xxx_msm(g) 0
#endif
+#ifdef CONFIG_USB_GADGET_RENESAS_USBHS
+#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name))
+#else
+#define gadget_is_renesas_usbhs(g) 0
+#endif
+
/**
* usb_gadget_controller_number - support bcdDevice id convention
* @gadget: the controller being driven
@@ -207,6 +213,9 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
return 0x27;
else if (gadget_is_ci13xxx_msm(gadget))
return 0x28;
+ else if (gadget_is_renesas_usbhs(gadget))
+ return 0x29;
+
return -ENOENT;
}
diff --git a/drivers/usb/renesas_usbhs/Makefile b/drivers/usb/renesas_usbhs/Makefile
index d76f3dd..b8798ad 100644
--- a/drivers/usb/renesas_usbhs/Makefile
+++ b/drivers/usb/renesas_usbhs/Makefile
@@ -5,3 +5,5 @@
obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o
renesas_usbhs-y := common.o mod.o pipe.o
+
+renesas_usbhs-$(CONFIG_USB_RENESAS_USBHS_UDC) += mod_gadget.o
diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c
index 7f99465..45acc8c 100644
--- a/drivers/usb/renesas_usbhs/mod.c
+++ b/drivers/usb/renesas_usbhs/mod.c
@@ -92,17 +92,32 @@ int usbhs_mod_init(struct usbhs_priv *priv)
struct device *dev = usbhs_priv_to_dev(priv);
int ret;
+ /*
+ * install host/gadget driver
+ */
+ ret = usbhs_mod_gadget_probe(priv);
+ if (ret < 0)
+ return ret;
+
/* irq settings */
ret = request_irq(priv->irq, usbhs_interrupt,
IRQF_DISABLED, dev_name(dev), priv);
- if (ret)
+ if (ret) {
dev_err(dev, "irq request err\n");
+ goto mod_init_gadget_err;
+ }
+
+ return ret;
+
+mod_init_gadget_err:
+ usbhs_mod_gadget_remove(priv);
return ret;
}
void usbhs_mod_exit(struct usbhs_priv *priv)
{
+ usbhs_mod_gadget_remove(priv);
free_irq(priv->irq, priv);
}
diff --git a/drivers/usb/renesas_usbhs/mod.h b/drivers/usb/renesas_usbhs/mod.h
index 462ba59..ba5bdc5 100644
--- a/drivers/usb/renesas_usbhs/mod.h
+++ b/drivers/usb/renesas_usbhs/mod.h
@@ -109,4 +109,20 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
ret; \
})
+/*
+ * gadget control
+ */
+#ifdef CONFIG_USB_RENESAS_USBHS_UDC
+extern int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv);
+extern void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv);
+#else
+static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
+{
+ return 0;
+}
+static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
+{
+}
+#endif
+
#endif /* RENESAS_USB_MOD_H */
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
new file mode 100644
index 0000000..14e3ad5
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -0,0 +1,989 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
+ *
+ * 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/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include "common.h"
+
+/*
+ * struct
+ */
+struct usbhsg_request {
+ struct usb_request req;
+ struct list_head node;
+};
+
+#define EP_NAME_SIZE 8
+struct usbhsg_gpriv;
+struct usbhsg_uep {
+ struct usb_ep ep;
+ struct usbhs_pipe *pipe;
+ struct list_head list;
+
+ char ep_name[EP_NAME_SIZE];
+
+ struct usbhsg_gpriv *gpriv;
+ int (*handler)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
+};
+
+struct usbhsg_gpriv {
+ struct usb_gadget gadget;
+ struct usbhs_mod mod;
+
+ struct usbhsg_uep *uep;
+ int uep_size;
+
+ struct usb_gadget_driver *driver;
+
+ u32 status;
+#define USBHSG_STATUS_STARTED_BIT (1 << 0)
+#define USBHSG_STATUS_REGISTERD_BIT (1 << 1)
+};
+
+/*
+ * 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, pos = (g)->uep; \
+ i < (g)->uep_size; \
+ i++, pos = (g)->uep + 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_lock(gp) usbhs_priv_to_lock((gp)->mod.priv)
+#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_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_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 |= (USBHSG_STATUS_ ##b ##_BIT))
+#define usbhsg_status_clr(gp, b) (gp->status &= ~(USBHSG_STATUS_ ##b ##_BIT))
+#define usbhsg_status_has(gp, b) (gp->status & (USBHSG_STATUS_ ##b ##_BIT))
+
+/*
+ * list push/pop
+ */
+static int usbhsg_queue_push(struct usbhsg_uep *uep,
+ struct usbhsg_request *ureq)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ int is_empty = list_empty(&uep->list);
+
+ list_add_tail(&ureq->node, &uep->list);
+ ureq->req.actual = 0;
+ ureq->req.status = -EINPROGRESS;
+
+ dev_dbg(dev, "pipe %d : queue push\n", usbhs_pipe_number(pipe));
+
+ return is_empty;
+}
+
+static struct usbhsg_request *usbhsg_queue_get(struct usbhsg_uep *uep)
+{
+ if (list_empty(&uep->list))
+ return NULL;
+
+ return list_entry(uep->list.next, struct usbhsg_request, node);
+}
+
+static void usbhsg_queue_remove(struct usbhsg_request *ureq)
+{
+ list_del_init(&ureq->node);
+}
+
+static int usbhsg_queue_handle(struct usbhsg_uep *uep)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct usbhsg_request *ureq = usbhsg_queue_get(uep);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ int ret = -EIO;
+
+ /* no request in queue */
+ if (!ureq)
+ return 0;
+
+ if (uep->handler)
+ ret = uep->handler(uep, ureq);
+ else
+ dev_err(dev, "no handler function\n");
+
+ return ret;
+}
+
+static int usbhsg_queue_pop(struct usbhsg_uep *uep,
+ struct usbhsg_request *ureq)
+{
+ 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);
+
+ ureq->req.status = 0;
+ ureq->req.complete(&uep->ep, &ureq->req);
+ usbhsg_queue_remove(ureq);
+
+ dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe));
+
+ /* more request ? */
+ usbhsg_queue_handle(uep);
+
+ return 0;
+}
+
+/*
+ * irq enable/disable function
+ */
+#define usbhsg_irq_callback_ctrl(uep, status, enable) \
+ ({ \
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); \
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); \
+ struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); \
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv); \
+ if (enable) \
+ mod->irq_##status |= (1 << usbhs_pipe_number(pipe)); \
+ else \
+ mod->irq_##status &= ~(1 << usbhs_pipe_number(pipe)); \
+ usbhs_irq_callback_update(priv, mod); \
+ })
+
+#define usbhsg_irq_empty_enable(uep) usbhsg_irq_callback_ctrl(uep, bempsts, 1)
+#define usbhsg_irq_empty_disable(uep) usbhsg_irq_callback_ctrl(uep, bempsts, 0)
+
+#define usbhsg_irq_ready_enable(uep) usbhsg_irq_callback_ctrl(uep, brdysts, 1)
+#define usbhsg_irq_ready_disable(uep) usbhsg_irq_callback_ctrl(uep, brdysts, 0)
+
+/*
+ * handler function
+ */
+static int usbhsg_handler_ctrl_stage_end(struct usbhsg_uep *uep,
+ struct usbhsg_request *ureq)
+{
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+ usbhs_dcp_control_transfer_done(pipe);
+
+ /*
+ * update dcp handler
+ */
+ uep->handler = NULL;
+
+ usbhsg_queue_pop(uep, ureq);
+
+ return 0;
+}
+
+static int usbhsg_handler_send_packet(struct usbhsg_uep *uep,
+ struct usbhsg_request *ureq)
+{
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usb_request *req = &ureq->req;
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ void *buf;
+ int remainder, send;
+ int is_done;
+ int maxp = usbhs_pipe_maxpacket(pipe);
+
+ buf = req->buf + req->actual;
+ remainder = req->length - req->actual;
+
+ send = usbhs_fifo_write(pipe, buf, remainder);
+
+ /*
+ * send < 0 : pipe busy
+ * send = 0 : send zero packet
+ * send > 0 : send data
+ *
+ * send <= max_packet
+ */
+ if (send > 0)
+ req->actual += send;
+
+ /* send all packet ? */
+ if (send < remainder)
+ is_done = 0; /* there are remainder data */
+ else if (send < maxp)
+ is_done = 1; /* short packet */
+ else
+ is_done = !req->zero; /* send zero packet ? */
+
+ dev_dbg(dev, " send (%d/ %d/ %d/ %d)\n",
+ remainder, send, is_done, req->zero);
+
+ /*
+ * enable irq_empty and send again
+ * if it still have remainder data which should be sent.
+ */
+ if (is_done)
+ usbhsg_irq_empty_disable(uep);
+ else
+ usbhsg_irq_empty_enable(uep);
+
+ /*
+ * usbhs_fifo_enable execute
+ * - after callback_update,
+ * - before queue_pop / stage_end
+ */
+ usbhs_fifo_enable(pipe);
+
+ /*
+ * all data were sent ?
+ */
+ if (is_done) {
+ /* it care below call in
+ "function mode" */
+ if (usbhsg_is_dcp(uep))
+ usbhsg_handler_ctrl_stage_end(uep, ureq);
+ else
+ usbhsg_queue_pop(uep, ureq);
+ }
+
+ return 0;
+}
+
+static int usbhsg_handler_receive_packet(struct usbhsg_uep *uep,
+ struct usbhsg_request *ureq)
+{
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usb_request *req = &ureq->req;
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ void *buf;
+ int maxp = usbhs_pipe_maxpacket(pipe);
+ int remainder, recv;
+ int is_done = 0;
+
+ buf = req->buf + req->actual;
+ remainder = req->length - req->actual;
+
+ recv = usbhs_fifo_read(pipe, buf, remainder);
+ /*
+ * recv < 0 : pipe busy
+ * recv >= 0 : receive data
+ *
+ * recv <= max_packet
+ */
+ if (recv < 0)
+ return recv;
+
+ /* update parameters */
+ req->actual += recv;
+
+ if ((recv == remainder) || /* receive all data */
+ (recv < maxp)) /* short packet */
+ is_done = 1;
+
+ dev_dbg(dev, " recv (%d/ %d/ %d/ %d)\n",
+ remainder, recv, is_done, req->zero);
+
+ /* read all data ? */
+ if (is_done) {
+ usbhs_fifo_disable(pipe);
+ usbhsg_queue_pop(uep, ureq);
+ }
+
+ return 0;
+}
+
+static int usbhsg_handler_prepare_receive_packet(struct usbhsg_uep *uep,
+ struct usbhsg_request *ureq)
+{
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ int ret;
+
+ ret = usbhs_fifo_prepare_read(pipe);
+ if (ret < 0)
+ return 0;
+
+ /*
+ * data will be read in "data ready interrupt"
+ */
+ usbhsg_irq_ready_enable(uep);
+
+ return 0;
+}
+
+
+/*
+ * irq functions
+ *
+ * it will be called from usbhs_interrupt
+ */
+static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+
+ gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state);
+
+ dev_dbg(dev, "state = %d : speed : %d\n",
+ usbhs_status_get_device_state(irq_state),
+ gpriv->gadget.speed);
+
+ return 0;
+}
+
+static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+ struct usbhsg_uep *uep = usbhsg_gpriv_to_dcp(gpriv);
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ int stage = usbhs_status_get_ctrl_stage(irq_state);
+ int ret = 0;
+ int setup;
+
+ dev_dbg(dev, "stage = %d\n", stage);
+
+ /*
+ * see Manual
+ *
+ * "Operation"
+ * - "Interrupt Function"
+ * - "Control Transfer Stage Transition Interrupt"
+ * - Fig. "Control Transfer Stage Transitions"
+ */
+
+ setup = 1;
+ switch (stage) {
+ case READ_DATA_STAGE:
+ uep->handler = usbhsg_handler_send_packet;
+ break;
+ case WRITE_DATA_STAGE:
+ uep->handler = usbhsg_handler_prepare_receive_packet;
+ break;
+ case NODATA_STATUS_STAGE:
+ uep->handler = usbhsg_handler_ctrl_stage_end;
+ break;
+ default:
+ setup = 0;
+ }
+
+ /*
+ * setup stage
+ */
+ if (setup) {
+ struct usb_ctrlrequest ctrl;
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+
+ usbhs_usbreq_get_val(priv, &ctrl);
+
+ /* call linux gadget handler */
+ ret = gpriv->driver->setup(&gpriv->gadget, &ctrl);
+ if (ret < 0)
+ usbhs_fifo_stall(pipe);
+ }
+
+ return ret;
+}
+
+static int usbhsg_irq_empty(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+ struct usbhsg_uep *uep;
+ struct usbhsg_request *ureq;
+ struct usbhs_pipe *pipe;
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ int i, ret;
+
+ if (!irq_state->bempsts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->bempsts & (1 << i)))
+ continue;
+
+ uep = usbhsg_pipe_to_uep(pipe);
+ ureq = usbhsg_queue_get(uep);
+ ret = usbhsg_handler_send_packet(uep, ureq);
+ if (ret < 0)
+ dev_err(dev, "send error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+static int usbhsg_irq_ready(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+ struct usbhsg_uep *uep;
+ struct usbhsg_request *ureq;
+ struct usbhs_pipe *pipe;
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ int i, ret;
+
+ if (!irq_state->brdysts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->brdysts & (1 << i)))
+ continue;
+
+ uep = usbhsg_pipe_to_uep(pipe);
+ ureq = usbhsg_queue_get(uep);
+ ret = usbhsg_handler_receive_packet(uep, ureq);
+ if (ret < 0)
+ dev_err(dev, "receive error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+/*
+ *
+ * usb_dcp_ops
+ *
+ */
+static int usbhsg_dcp_enable(struct usbhsg_uep *uep)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+ struct usbhs_pipe *pipe;
+
+ pipe = usbhs_pipe_get(priv, USB_ENDPOINT_XFER_CONTROL);
+ if (!pipe)
+ return -EIO;
+
+ uep->pipe = pipe;
+ uep->pipe->mod_private = uep;
+ INIT_LIST_HEAD(&uep->list);
+
+ usbhs_dcp_enable(uep->pipe, 0, 0, uep->ep.maxpacket);
+
+ return 0;
+}
+
+static int usbhsg_dcp_disable(struct usbhsg_uep *uep)
+{
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usbhsg_request *ureq;
+
+ usbhs_fifo_disable(pipe);
+
+ /*
+ * disable pipe irq
+ */
+ usbhsg_irq_empty_disable(uep);
+ usbhsg_irq_ready_disable(uep);
+
+ while (1) {
+ ureq = usbhsg_queue_get(uep);
+ if (!ureq)
+ break;
+
+ usbhsg_queue_remove(ureq);
+ }
+
+ uep->pipe->mod_private = NULL;
+ uep->pipe = NULL;
+
+ 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;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int pipecfg;
+ int pipemaxp;
+
+ pipe = usbhs_pipe_get(priv, usb_endpoint_type(desc));
+ if (!pipe)
+ return -EIO;
+
+ dev_dbg(dev, "pipe %d enable\n", usbhs_pipe_number(pipe));
+
+ uep->pipe = pipe;
+ pipe->mod_private = uep;
+
+ INIT_LIST_HEAD(&uep->list);
+
+ pipecfg = usbhs_pipe_get_default_pipecfg(pipe, desc, 0);
+ pipemaxp = usbhs_pipe_get_default_pipemaxp(pipe, desc, 0);
+
+ if (usb_endpoint_dir_in(desc))
+ uep->handler = usbhsg_handler_send_packet;
+ else
+ uep->handler = usbhsg_handler_prepare_receive_packet;
+
+ return usbhs_pipe_enable(pipe, desc, pipecfg, pipemaxp);
+}
+
+static int usbhsg_ep_disable(struct usb_ep *ep)
+{
+ 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 = usbhsg_uep_to_pipe(uep);
+ struct usbhsg_request *ureq;
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ usbhs_fifo_disable(pipe);
+
+ /*
+ * disable pipe irq
+ */
+ usbhsg_irq_empty_disable(uep);
+ usbhsg_irq_ready_disable(uep);
+
+ while (1) {
+ ureq = usbhsg_queue_get(uep);
+ if (!ureq)
+ break;
+
+ usbhsg_queue_remove(ureq);
+ }
+
+ uep->pipe->mod_private = NULL;
+ uep->pipe = NULL;
+
+ dev_dbg(dev, "pipe %d disable\n", usbhs_pipe_number(pipe));
+
+ return 0;
+}
+
+static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep,
+ gfp_t gfp_flags)
+{
+ struct usbhsg_request *ureq;
+
+ ureq = kzalloc(sizeof *ureq, gfp_flags);
+ if (!ureq)
+ return NULL;
+
+ INIT_LIST_HEAD(&ureq->node);
+ return &ureq->req;
+}
+
+static void usbhsg_ep_free_request(struct usb_ep *ep,
+ struct usb_request *req)
+{
+ struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+
+ WARN_ON(!list_empty(&ureq->node));
+ kfree(ureq);
+}
+
+static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req,
+ gfp_t gfp_flags)
+{
+ struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+ struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
+ struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ int is_1st;
+ int ret = 0;
+
+ /* usb driver charm check */
+ if (usbhsg_is_not_connected(gpriv) ||
+ unlikely(!gpriv->driver))
+ return -ESHUTDOWN;
+
+ /* mod_gadget charm check */
+ if (unlikely(!pipe))
+ return -ESHUTDOWN;
+
+ /* usb driver charm setting */
+ is_1st = usbhsg_queue_push(uep, ureq);
+
+ /* run each case */
+ if (is_1st)
+ ret = usbhsg_queue_handle(uep);
+
+ return ret;
+}
+
+static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
+{
+ struct usbhsg_request *ureq = usbhsg_req_to_ureq(req);
+
+ usbhsg_queue_remove(ureq);
+
+ return 0;
+}
+
+static struct usb_ep_ops usbhsg_ep_ops = {
+ .enable = usbhsg_ep_enable,
+ .disable = usbhsg_ep_disable,
+
+ .alloc_request = usbhsg_ep_alloc_request,
+ .free_request = usbhsg_ep_free_request,
+
+ .queue = usbhsg_ep_queue,
+ .dequeue = usbhsg_ep_dequeue,
+};
+
+/*
+ * usb module start/end
+ */
+static int usbhsg_try_start(struct usbhs_priv *priv)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+ struct usbhsg_uep *uep = usbhsg_gpriv_to_dcp(gpriv);
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ /*
+ * enable interrupt and systems if ready
+ */
+ if (!(usbhsg_status_has(gpriv, STARTED) &&
+ usbhsg_status_has(gpriv, REGISTERD)))
+ return 0;
+
+ dev_dbg(dev, "start gadget\n");
+
+ /*
+ * pipe initialize and enable DCP
+ */
+ usbhs_pipe_all_free(priv);
+ usbhsg_dcp_enable(uep);
+
+ /*
+ * system config enble
+ * - HI speed
+ * - function
+ * - usb module
+ */
+ usbhs_sys_hispeed_ctrl(priv, 1);
+ usbhs_sys_function_ctrl(priv, 1);
+ usbhs_sys_usb_ctrl(priv, 1);
+
+ /*
+ * enable irq callback
+ */
+ mod->irq_dev_state = usbhsg_irq_dev_state;
+ mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
+ mod->irq_empty = usbhsg_irq_empty;
+ mod->irq_ready = usbhsg_irq_ready;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+ usbhs_irq_callback_update(priv, mod);
+
+ return 0;
+}
+
+static int usbhsg_try_stop(struct usbhs_priv *priv)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+ struct usbhsg_uep *uep = usbhsg_gpriv_to_dcp(gpriv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ /*
+ * disable interrupt and systems if 1st try
+ */
+ if (!usbhsg_status_has(gpriv, STARTED) &&
+ !usbhsg_status_has(gpriv, REGISTERD))
+ return 0;
+
+ /* disable all irq */
+ mod->irq_dev_state = NULL;
+ mod->irq_ctrl_stage = NULL;
+ mod->irq_empty = NULL;
+ mod->irq_ready = NULL;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+ usbhs_irq_callback_update(priv, mod);
+
+ if (gpriv->driver)
+ gpriv->driver->disconnect(&gpriv->gadget);
+
+ usbhsg_dcp_disable(uep);
+
+ /* disable sys */
+ usbhs_sys_hispeed_ctrl(priv, 0);
+ usbhs_sys_function_ctrl(priv, 0);
+ usbhs_sys_usb_ctrl(priv, 0);
+
+ dev_dbg(dev, "stop gadget\n");
+
+ return 0;
+}
+
+/*
+ *
+ * linux usb function
+ *
+ */
+struct usbhsg_gpriv *the_controller;
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+ int (*bind)(struct usb_gadget *))
+{
+ struct usbhsg_gpriv *gpriv = the_controller;
+ struct usbhs_priv *priv;
+ struct device *dev;
+ int ret;
+
+ if (!bind ||
+ !driver ||
+ !driver->setup ||
+ driver->speed != USB_SPEED_HIGH)
+ return -EINVAL;
+ if (!gpriv)
+ return -ENODEV;
+ if (gpriv->driver)
+ return -EBUSY;
+
+ dev = usbhsg_gpriv_to_dev(gpriv);
+ priv = usbhsg_gpriv_to_priv(gpriv);
+
+ /* first hook up the driver ... */
+ gpriv->driver = driver;
+ gpriv->gadget.dev.driver = &driver->driver;
+
+ ret = device_add(&gpriv->gadget.dev);
+ if (ret) {
+ dev_err(dev, "device_add error %d\n", ret);
+ goto add_fail;
+ }
+
+ ret = bind(&gpriv->gadget);
+ if (ret) {
+ dev_err(dev, "bind to driver %s error %d\n",
+ driver->driver.name, ret);
+ goto bind_fail;
+ }
+
+ dev_dbg(dev, "bind %s\n", driver->driver.name);
+
+ usbhsg_status_set(gpriv, REGISTERD);
+
+ return usbhsg_try_start(priv);
+
+bind_fail:
+ device_del(&gpriv->gadget.dev);
+add_fail:
+ gpriv->driver = NULL;
+ gpriv->gadget.dev.driver = NULL;
+
+ return ret;
+}
+EXPORT_SYMBOL(usb_gadget_probe_driver);
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct usbhsg_gpriv *gpriv = the_controller;
+ struct usbhs_priv *priv;
+ struct device *dev = usbhsg_gpriv_to_dev(gpriv);
+ spinlock_t *lock;
+ unsigned long flags;
+
+ if (!gpriv)
+ return -ENODEV;
+
+ if (!driver ||
+ !driver->unbind ||
+ driver != gpriv->driver)
+ return -EINVAL;
+
+ dev = usbhsg_gpriv_to_dev(gpriv);
+ lock = usbhsg_gpriv_to_lock(gpriv);
+ priv = usbhsg_gpriv_to_priv(gpriv);
+
+ spin_lock_irqsave(lock, flags);
+
+ usbhsg_status_clr(gpriv, REGISTERD);
+ usbhsg_try_stop(priv);
+ device_del(&gpriv->gadget.dev);
+ gpriv->driver = NULL;
+
+ spin_unlock_irqrestore(lock, flags);
+
+ driver->unbind(&gpriv->gadget);
+ dev_dbg(dev, "unbind %s\n", driver->driver.name);
+
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/*
+ * usb gadget ops
+ */
+static int usbhsg_get_frame(struct usb_gadget *gadget)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget);
+ struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv);
+
+ return usbhs_frame_get_num(priv);
+}
+
+static struct usb_gadget_ops usbhsg_gadget_ops = {
+ .get_frame = usbhsg_get_frame,
+};
+
+static int usbhsg_start(struct usbhs_priv *priv)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+ usbhsg_status_set(gpriv, STARTED);
+
+ return usbhsg_try_start(priv);
+}
+
+static int usbhsg_stop(struct usbhs_priv *priv)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+ usbhsg_status_clr(gpriv, STARTED);
+
+ return usbhsg_try_stop(priv);
+}
+
+int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
+{
+ struct usbhsg_gpriv *gpriv;
+ struct usbhsg_uep *uep;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int pipe_size = usbhs_get_dparam(priv, pipe_size);
+ int i;
+
+ gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
+ if (!gpriv) {
+ dev_err(dev, "Could not allocate gadget priv\n");
+ return -ENOMEM;
+ }
+
+ uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
+ if (!uep) {
+ dev_err(dev, "Could not allocate ep\n");
+ goto usbhs_mod_gadget_probe_err_gpriv;
+ }
+
+ /*
+ * CAUTION
+ *
+ * There is no guarantee that it is possible to access usb module here.
+ * Don't accesses to it.
+ * The accesse will be enable after "usbhsg_start"
+ */
+
+ /*
+ * register itself
+ */
+ usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET);
+
+ /* init gpriv */
+ gpriv->mod.name = "gadget";
+ gpriv->mod.start = usbhsg_start;
+ gpriv->mod.stop = usbhsg_stop;
+ gpriv->uep = uep;
+ gpriv->uep_size = pipe_size;
+ usbhsg_status_init(gpriv);
+
+ /*
+ * init gadget
+ */
+ device_initialize(&gpriv->gadget.dev);
+ dev_set_name(&gpriv->gadget.dev, "gadget");
+ gpriv->gadget.dev.parent = dev;
+ gpriv->gadget.name = "renesas_usbhs_udc";
+ gpriv->gadget.ops = &usbhsg_gadget_ops;
+ gpriv->gadget.is_dualspeed = 1;
+
+ INIT_LIST_HEAD(&gpriv->gadget.ep_list);
+
+ /*
+ * init usb_ep
+ */
+ usbhsg_for_each_uep_with_dcp(uep, gpriv, i) {
+ uep->gpriv = gpriv;
+ snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i);
+
+ uep->ep.name = uep->ep_name;
+ uep->ep.ops = &usbhsg_ep_ops;
+ INIT_LIST_HEAD(&uep->ep.ep_list);
+
+ /* init DCP */
+ if (usbhsg_is_dcp(uep)) {
+ gpriv->gadget.ep0 = &uep->ep;
+ uep->ep.maxpacket = 64;
+ }
+ /* init normal pipe */
+ else {
+ uep->ep.maxpacket = 512;
+ list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list);
+ }
+ }
+
+ the_controller = gpriv;
+
+ dev_info(dev, "gadget probed\n");
+
+ return 0;
+
+usbhs_mod_gadget_probe_err_gpriv:
+ kfree(gpriv);
+
+ return -ENOMEM;
+}
+
+void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv)
+{
+ struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
+
+ kfree(gpriv);
+}
--
1.7.1
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