This Patch adds Support for PXA27X UDC. (Rebased to drivers/usb reorganisation) Signed-off-by: Vivek Kutal <vivek.kutal@azingo.com> Signed-off-by: Remy Bohmer <linux@bohmer.net>master
Remy Bohmer
16 years ago
parent
2731b9a866
commit
3ccbfb25f4
@ -0,0 +1,702 @@ |
||||
/*
|
||||
* PXA27x USB device driver for u-boot. |
||||
* |
||||
* Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it> |
||||
* Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it> |
||||
* Copyright (C) 2008 Vivek Kutal <vivek.kutal@azingo.com> |
||||
* |
||||
* This program is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU General Public License as |
||||
* published by the Free Software Foundation; either version 2 of |
||||
* the License, or (at your option) any later version. |
||||
* |
||||
* 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., 59 Temple Place, Suite 330, Boston, |
||||
* MA 02111-1307 USA |
||||
* |
||||
*/ |
||||
|
||||
|
||||
#include <common.h> |
||||
#include <config.h> |
||||
#include <asm/byteorder.h> |
||||
#include <usbdcore.h> |
||||
#include <usbdcore_ep0.h> |
||||
#include <asm/arch/hardware.h> |
||||
#include <usb/pxa27x_udc.h> |
||||
|
||||
/* number of endpoints on this UDC */ |
||||
#define UDC_MAX_ENDPOINTS 24 |
||||
|
||||
static struct urb *ep0_urb; |
||||
static struct usb_device_instance *udc_device; |
||||
static int ep0state = EP0_IDLE; |
||||
|
||||
#ifdef USBDDBG |
||||
static void udc_dump_buffer(char *name, u8 *buf, int len) |
||||
{ |
||||
usbdbg("%s - buf %p, len %d", name, buf, len); |
||||
print_buffer(0, buf, 1, len, 0); |
||||
} |
||||
#else |
||||
#define udc_dump_buffer(name, buf, len) /* void */ |
||||
#endif |
||||
|
||||
static inline void udc_ack_int_UDCCR(int mask) |
||||
{ |
||||
USIR1 = mask | USIR1; |
||||
} |
||||
|
||||
/*
|
||||
* If the endpoint has an active tx_urb, then the next packet of data from the |
||||
* URB is written to the tx FIFO. |
||||
* The total amount of data in the urb is given by urb->actual_length. |
||||
* The maximum amount of data that can be sent in any one packet is given by |
||||
* endpoint->tx_packetSize. |
||||
* The number of data bytes from this URB that have already been transmitted |
||||
* is given by endpoint->sent. |
||||
* endpoint->last is updated by this routine with the number of data bytes |
||||
* transmitted in this packet. |
||||
*/ |
||||
static int udc_write_urb(struct usb_endpoint_instance *endpoint) |
||||
{ |
||||
struct urb *urb = endpoint->tx_urb; |
||||
int ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK; |
||||
u32 *addr32 = (u32 *) &UDCDN(ep_num); |
||||
u32 *data32 = (u32 *) urb->buffer; |
||||
u8 *addr8 = (u8 *) &UDCDN(ep_num); |
||||
u8 *data8 = (u8 *) urb->buffer; |
||||
unsigned int i, n, w, b, is_short; |
||||
int timeout = 2000; /* 2ms */ |
||||
|
||||
if (!urb || !urb->actual_length) |
||||
return -1; |
||||
|
||||
n = MIN(urb->actual_length - endpoint->sent, endpoint->tx_packetSize); |
||||
if (n <= 0) |
||||
return -1; |
||||
|
||||
usbdbg("write urb on ep %d", ep_num); |
||||
#if defined(USBDDBG) && defined(USBDPARANOIA) |
||||
usbdbg("urb: buf %p, buf_len %d, actual_len %d", |
||||
urb->buffer, urb->buffer_length, urb->actual_length); |
||||
usbdbg("endpoint: sent %d, tx_packetSize %d, last %d", |
||||
endpoint->sent, endpoint->tx_packetSize, endpoint->last); |
||||
#endif |
||||
|
||||
is_short = n != endpoint->tx_packetSize; |
||||
w = n / 4; |
||||
b = n % 4; |
||||
usbdbg("n %d%s w %d b %d", n, is_short ? "-s" : "", w, b); |
||||
udc_dump_buffer("urb write", data8 + endpoint->sent, n); |
||||
|
||||
/* Prepare for data send */ |
||||
if (ep_num) |
||||
UDCCSN(ep_num) = UDCCSR_PC; |
||||
|
||||
for (i = 0; i < w; i++) |
||||
*addr32 = data32[endpoint->sent/4 + i]; |
||||
for (i = 0; i < b; i++) |
||||
*addr8 = data8[endpoint->sent + w*4 + i]; |
||||
|
||||
/* Set "Packet Complete" if less data then tx_packetSize */ |
||||
if (is_short) |
||||
UDCCSN(ep_num) = ep_num ? UDCCSR_SP : UDCCSR0_IPR; |
||||
|
||||
/* Wait for data sent */ |
||||
while (!(UDCCSN(ep_num) & (ep_num ? UDCCSR_PC : UDCCSR0_IPR))) { |
||||
if (ep_num) { |
||||
if (timeout-- == 0) |
||||
return -1; |
||||
else |
||||
udelay(1); |
||||
}; |
||||
} |
||||
endpoint->last = n; |
||||
|
||||
if (ep_num) { |
||||
usbd_tx_complete(endpoint); |
||||
} else { |
||||
endpoint->sent += n; |
||||
endpoint->last -= n; |
||||
} |
||||
|
||||
if ((endpoint->tx_urb->actual_length - endpoint->sent) <= 0) { |
||||
urb->actual_length = 0; |
||||
endpoint->sent = 0; |
||||
endpoint->last = 0; |
||||
} |
||||
|
||||
if ((endpoint->sent >= urb->actual_length) && (!ep_num)) { |
||||
usbdbg("ep0 IN stage done"); |
||||
if (is_short) |
||||
ep0state = EP0_IDLE; |
||||
else |
||||
ep0state = EP0_XFER_COMPLETE; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int udc_read_urb(struct usb_endpoint_instance *endpoint) |
||||
{ |
||||
struct urb *urb = endpoint->rcv_urb; |
||||
int ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK; |
||||
u32 *addr32 = (u32 *) &UDCDN(ep_num); |
||||
u32 *data32 = (u32 *) urb->buffer; |
||||
unsigned int i, n, is_short ; |
||||
|
||||
usbdbg("read urb on ep %d", ep_num); |
||||
#if defined(USBDDBG) && defined(USBDPARANOIA) |
||||
usbdbg("urb: buf %p, buf_len %d, actual_len %d", |
||||
urb->buffer, urb->buffer_length, urb->actual_length); |
||||
usbdbg("endpoint: rcv_packetSize %d", |
||||
endpoint->rcv_packetSize); |
||||
#endif |
||||
|
||||
if (UDCCSN(ep_num) & UDCCSR_BNE) |
||||
n = UDCBCN(ep_num) & 0x3ff; |
||||
else /* zlp */ |
||||
n = 0; |
||||
is_short = n != endpoint->rcv_packetSize; |
||||
|
||||
usbdbg("n %d%s", n, is_short ? "-s" : ""); |
||||
for (i = 0; i < n; i += 4) |
||||
data32[urb->actual_length/4 + i/4] = *addr32; |
||||
|
||||
udc_dump_buffer("urb read", (u8 *) data32, urb->actual_length + n); |
||||
usbd_rcv_complete(endpoint, n, 0); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int udc_read_urb_ep0(void) |
||||
{ |
||||
u32 *addr32 = (u32 *) &UDCDN(0); |
||||
u32 *data32 = (u32 *) ep0_urb->buffer; |
||||
u8 *addr8 = (u8 *) &UDCDN(0); |
||||
u8 *data8 = (u8 *) ep0_urb->buffer; |
||||
unsigned int i, n, w, b; |
||||
|
||||
n = UDCBCR0; |
||||
w = n / 4; |
||||
b = n % 4; |
||||
|
||||
for (i = 0; i < w; i++) { |
||||
data32[ep0_urb->actual_length/4 + i] = *addr32; |
||||
ep0_urb->actual_length += 4; |
||||
} |
||||
|
||||
for (i = 0; i < b; i++) { |
||||
data8[ep0_urb->actual_length + w*4 + i] = *addr8; |
||||
ep0_urb->actual_length++; |
||||
} |
||||
|
||||
UDCCSR0 = UDCCSR0_OPC | UDCCSR0_IPR; |
||||
if (ep0_urb->actual_length == ep0_urb->device_request.wLength) |
||||
return 1; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static void udc_handle_ep0(struct usb_endpoint_instance *endpoint) |
||||
{ |
||||
u32 udccsr0 = UDCCSR0; |
||||
u32 *data = (u32 *) &ep0_urb->device_request; |
||||
int i; |
||||
|
||||
usbdbg("udccsr0 %x", udccsr0); |
||||
|
||||
/* Clear stall status */ |
||||
if (udccsr0 & UDCCSR0_SST) { |
||||
usberr("clear stall status"); |
||||
UDCCSR0 = UDCCSR0_SST; |
||||
ep0state = EP0_IDLE; |
||||
} |
||||
|
||||
/* previous request unfinished? non-error iff back-to-back ... */ |
||||
if ((udccsr0 & UDCCSR0_SA) != 0 && ep0state != EP0_IDLE) |
||||
ep0state = EP0_IDLE; |
||||
|
||||
switch (ep0state) { |
||||
|
||||
case EP0_IDLE: |
||||
|
||||
udccsr0 = UDCCSR0; |
||||
/* Start control request? */ |
||||
if ((udccsr0 & (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE)) |
||||
== (UDCCSR0_OPC | UDCCSR0_SA | UDCCSR0_RNE)) { |
||||
|
||||
/* Read SETUP packet.
|
||||
* SETUP packet size is 8 bytes (aka 2 words) |
||||
*/ |
||||
usbdbg("try reading SETUP packet"); |
||||
for (i = 0; i < 2; i++) { |
||||
if ((UDCCSR0 & UDCCSR0_RNE) == 0) { |
||||
usberr("setup packet too short:%d", i); |
||||
goto stall; |
||||
} |
||||
data[i] = UDCDR0; |
||||
} |
||||
|
||||
UDCCSR0 |= (UDCCSR0_OPC | UDCCSR0_SA); |
||||
if ((UDCCSR0 & UDCCSR0_RNE) != 0) { |
||||
usberr("setup packet too long"); |
||||
goto stall; |
||||
} |
||||
|
||||
udc_dump_buffer("ep0 setup read", (u8 *) data, 8); |
||||
|
||||
if (ep0_urb->device_request.wLength == 0) { |
||||
usbdbg("Zero Data control Packet\n"); |
||||
if (ep0_recv_setup(ep0_urb)) { |
||||
usberr("Invalid Setup Packet\n"); |
||||
udc_dump_buffer("ep0 setup read", |
||||
(u8 *)data, 8); |
||||
goto stall; |
||||
} |
||||
UDCCSR0 = UDCCSR0_IPR; |
||||
ep0state = EP0_IDLE; |
||||
} else { |
||||
/* Check direction */ |
||||
if ((ep0_urb->device_request.bmRequestType & |
||||
USB_REQ_DIRECTION_MASK) |
||||
== USB_REQ_HOST2DEVICE) { |
||||
ep0state = EP0_OUT_DATA; |
||||
ep0_urb->buffer = |
||||
(u8 *)ep0_urb->buffer_data; |
||||
ep0_urb->buffer_length = |
||||
sizeof(ep0_urb->buffer_data); |
||||
ep0_urb->actual_length = 0; |
||||
UDCCSR0 = UDCCSR0_IPR; |
||||
} else { |
||||
/* The ep0_recv_setup function has
|
||||
* already placed our response packet |
||||
* data in ep0_urb->buffer and the |
||||
* packet length in |
||||
* ep0_urb->actual_length. |
||||
*/ |
||||
if (ep0_recv_setup(ep0_urb)) { |
||||
stall: |
||||
usberr("Invalid setup packet"); |
||||
udc_dump_buffer("ep0 setup read" |
||||
, (u8 *) data, 8); |
||||
ep0state = EP0_IDLE; |
||||
|
||||
UDCCSR0 = UDCCSR0_SA | |
||||
UDCCSR0_OPC | UDCCSR0_FST | |
||||
UDCCS0_FTF; |
||||
|
||||
return; |
||||
} |
||||
|
||||
endpoint->tx_urb = ep0_urb; |
||||
endpoint->sent = 0; |
||||
usbdbg("EP0_IN_DATA"); |
||||
ep0state = EP0_IN_DATA; |
||||
if (udc_write_urb(endpoint) < 0) |
||||
goto stall; |
||||
|
||||
} |
||||
} |
||||
return; |
||||
} else if ((udccsr0 & (UDCCSR0_OPC | UDCCSR0_SA)) |
||||
== (UDCCSR0_OPC|UDCCSR0_SA)) { |
||||
usberr("Setup Active but no data. Stalling ....\n"); |
||||
goto stall; |
||||
} else { |
||||
usbdbg("random early IRQs"); |
||||
/* Some random early IRQs:
|
||||
* - we acked FST |
||||
* - IPR cleared |
||||
* - OPC got set, without SA (likely status stage) |
||||
*/ |
||||
UDCCSR0 = udccsr0 & (UDCCSR0_SA | UDCCSR0_OPC); |
||||
} |
||||
break; |
||||
|
||||
case EP0_OUT_DATA: |
||||
|
||||
if ((udccsr0 & UDCCSR0_OPC) && !(udccsr0 & UDCCSR0_SA)) { |
||||
if (udc_read_urb_ep0()) { |
||||
read_complete: |
||||
ep0state = EP0_IDLE; |
||||
if (ep0_recv_setup(ep0_urb)) { |
||||
/* Not a setup packet, stall next
|
||||
* EP0 transaction |
||||
*/ |
||||
udc_dump_buffer("ep0 setup read", |
||||
(u8 *) data, 8); |
||||
usberr("can't parse setup packet\n"); |
||||
goto stall; |
||||
} |
||||
} |
||||
} else if (!(udccsr0 & UDCCSR0_OPC) && |
||||
!(udccsr0 & UDCCSR0_IPR)) { |
||||
if (ep0_urb->device_request.wLength == |
||||
ep0_urb->actual_length) |
||||
goto read_complete; |
||||
|
||||
usberr("Premature Status\n"); |
||||
ep0state = EP0_IDLE; |
||||
} |
||||
break; |
||||
|
||||
case EP0_IN_DATA: |
||||
/* GET_DESCRIPTOR etc */ |
||||
if (udccsr0 & UDCCSR0_OPC) { |
||||
UDCCSR0 = UDCCSR0_OPC | UDCCSR0_FTF; |
||||
usberr("ep0in premature status"); |
||||
ep0state = EP0_IDLE; |
||||
} else { |
||||
/* irq was IPR clearing */ |
||||
if (udc_write_urb(endpoint) < 0) { |
||||
usberr("ep0_write_error\n"); |
||||
goto stall; |
||||
} |
||||
} |
||||
break; |
||||
|
||||
case EP0_XFER_COMPLETE: |
||||
UDCCSR0 = UDCCSR0_IPR; |
||||
ep0state = EP0_IDLE; |
||||
break; |
||||
|
||||
default: |
||||
usbdbg("Default\n"); |
||||
} |
||||
USIR0 = USIR0_IR0; |
||||
} |
||||
|
||||
static void udc_handle_ep(struct usb_endpoint_instance *endpoint) |
||||
{ |
||||
int ep_addr = endpoint->endpoint_address; |
||||
int ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK; |
||||
int ep_isout = (ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT; |
||||
|
||||
u32 flags = UDCCSN(ep_num) & (UDCCSR_SST | UDCCSR_TRN); |
||||
if (flags) |
||||
UDCCSN(ep_num) = flags; |
||||
|
||||
if (ep_isout) |
||||
udc_read_urb(endpoint); |
||||
else |
||||
udc_write_urb(endpoint); |
||||
|
||||
UDCCSN(ep_num) = UDCCSR_PC; |
||||
} |
||||
|
||||
static void udc_state_changed(void) |
||||
{ |
||||
int config, interface, alternate; |
||||
|
||||
UDCCR |= UDCCR_SMAC; |
||||
|
||||
config = (UDCCR & UDCCR_ACN) >> UDCCR_ACN_S; |
||||
interface = (UDCCR & UDCCR_AIN) >> UDCCR_AIN_S; |
||||
alternate = (UDCCR & UDCCR_AAISN) >> UDCCR_AAISN_S; |
||||
|
||||
usbdbg("New UDC settings are: conf %d - inter %d - alter %d", |
||||
config, interface, alternate); |
||||
|
||||
usbd_device_event_irq(udc_device, DEVICE_CONFIGURED, 0); |
||||
UDCISR1 = UDCISR1_IRCC; |
||||
} |
||||
|
||||
void udc_irq(void) |
||||
{ |
||||
int handled; |
||||
struct usb_endpoint_instance *endpoint; |
||||
int ep_num, i; |
||||
u32 udcisr0; |
||||
|
||||
do { |
||||
handled = 0; |
||||
/* Suspend Interrupt Request */ |
||||
if (USIR1 & UDCCR_SUSIR) { |
||||
usbdbg("Suspend\n"); |
||||
udc_ack_int_UDCCR(UDCCR_SUSIR); |
||||
handled = 1; |
||||
ep0state = EP0_IDLE; |
||||
} |
||||
|
||||
/* Resume Interrupt Request */ |
||||
if (USIR1 & UDCCR_RESIR) { |
||||
udc_ack_int_UDCCR(UDCCR_RESIR); |
||||
handled = 1; |
||||
usbdbg("USB resume\n"); |
||||
} |
||||
|
||||
if (USIR1 & (1<<31)) { |
||||
handled = 1; |
||||
udc_state_changed(); |
||||
} |
||||
|
||||
/* Reset Interrupt Request */ |
||||
if (USIR1 & UDCCR_RSTIR) { |
||||
udc_ack_int_UDCCR(UDCCR_RSTIR); |
||||
handled = 1; |
||||
usbdbg("Reset\n"); |
||||
usbd_device_event_irq(udc_device, DEVICE_RESET, 0); |
||||
} else { |
||||
if (USIR0) |
||||
usbdbg("UISR0: %x \n", USIR0); |
||||
|
||||
if (USIR0 & 0x2) |
||||
USIR0 = 0x2; |
||||
|
||||
/* Control traffic */ |
||||
if (USIR0 & USIR0_IR0) { |
||||
handled = 1; |
||||
udc_handle_ep0(udc_device->bus->endpoint_array); |
||||
USIR0 = USIR0_IR0; |
||||
} |
||||
|
||||
endpoint = udc_device->bus->endpoint_array; |
||||
for (i = 0; i < udc_device->bus->max_endpoints; i++) { |
||||
ep_num = (endpoint[i].endpoint_address) & |
||||
USB_ENDPOINT_NUMBER_MASK; |
||||
if (!ep_num) |
||||
continue; |
||||
udcisr0 = UDCISR0; |
||||
if (udcisr0 & |
||||
UDCISR_INT(ep_num, UDC_INT_PACKETCMP)) { |
||||
UDCISR0 = UDCISR_INT(ep_num, |
||||
UDC_INT_PACKETCMP); |
||||
udc_handle_ep(&endpoint[i]); |
||||
} |
||||
} |
||||
} |
||||
|
||||
} while (handled); |
||||
} |
||||
|
||||
/* The UDCCR reg contains mask and interrupt status bits,
|
||||
* so using '|=' isn't safe as it may ack an interrupt. |
||||
*/ |
||||
#define UDCCR_OEN (1 << 31) /* On-the-Go Enable */ |
||||
#define UDCCR_MASK_BITS (UDCCR_OEN | UDCCR_UDE) |
||||
|
||||
static inline void udc_set_mask_UDCCR(int mask) |
||||
{ |
||||
UDCCR = (UDCCR & UDCCR_MASK_BITS) | (mask & UDCCR_MASK_BITS); |
||||
} |
||||
|
||||
static inline void udc_clear_mask_UDCCR(int mask) |
||||
{ |
||||
UDCCR = (UDCCR & UDCCR_MASK_BITS) & ~(mask & UDCCR_MASK_BITS); |
||||
} |
||||
|
||||
static void pio_irq_enable(int ep_num) |
||||
{ |
||||
if (ep_num < 16) |
||||
UDCICR0 |= 3 << (ep_num * 2); |
||||
else { |
||||
ep_num -= 16; |
||||
UDCICR1 |= 3 << (ep_num * 2); |
||||
} |
||||
} |
||||
|
||||
/*
|
||||
* udc_set_nak |
||||
* |
||||
* Allow upper layers to signal lower layers should not accept more RX data |
||||
*/ |
||||
void udc_set_nak(int ep_num) |
||||
{ |
||||
/* TODO */ |
||||
} |
||||
|
||||
/*
|
||||
* udc_unset_nak |
||||
* |
||||
* Suspend sending of NAK tokens for DATA OUT tokens on a given endpoint. |
||||
* Switch off NAKing on this endpoint to accept more data output from host. |
||||
*/ |
||||
void udc_unset_nak(int ep_num) |
||||
{ |
||||
/* TODO */ |
||||
} |
||||
|
||||
int udc_endpoint_write(struct usb_endpoint_instance *endpoint) |
||||
{ |
||||
return udc_write_urb(endpoint); |
||||
} |
||||
|
||||
/* Associate a physical endpoint with endpoint instance */ |
||||
void udc_setup_ep(struct usb_device_instance *device, unsigned int id, |
||||
struct usb_endpoint_instance *endpoint) |
||||
{ |
||||
int ep_num, ep_addr, ep_isout, ep_type, ep_size; |
||||
int config, interface, alternate; |
||||
u32 tmp; |
||||
|
||||
usbdbg("setting up endpoint id %d", id); |
||||
|
||||
if (!endpoint) { |
||||
usberr("endpoint void!"); |
||||
return; |
||||
} |
||||
|
||||
ep_num = endpoint->endpoint_address & USB_ENDPOINT_NUMBER_MASK; |
||||
if (ep_num >= UDC_MAX_ENDPOINTS) { |
||||
usberr("unable to setup ep %d!", ep_num); |
||||
return; |
||||
} |
||||
|
||||
pio_irq_enable(ep_num); |
||||
if (ep_num == 0) { |
||||
/* Done for ep0 */ |
||||
return; |
||||
} |
||||
|
||||
config = 1; |
||||
interface = 0; |
||||
alternate = 0; |
||||
|
||||
usbdbg("config %d - interface %d - alternate %d", |
||||
config, interface, alternate); |
||||
|
||||
ep_addr = endpoint->endpoint_address; |
||||
ep_num = ep_addr & USB_ENDPOINT_NUMBER_MASK; |
||||
ep_isout = (ep_addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT; |
||||
ep_type = ep_isout ? endpoint->rcv_attributes : endpoint->tx_attributes; |
||||
ep_size = ep_isout ? endpoint->rcv_packetSize : endpoint->tx_packetSize; |
||||
|
||||
usbdbg("addr %x, num %d, dir %s, type %s, packet size %d", |
||||
ep_addr, ep_num, |
||||
ep_isout ? "out" : "in", |
||||
ep_type == USB_ENDPOINT_XFER_ISOC ? "isoc" : |
||||
ep_type == USB_ENDPOINT_XFER_BULK ? "bulk" : |
||||
ep_type == USB_ENDPOINT_XFER_INT ? "int" : "???", |
||||
ep_size |
||||
); |
||||
|
||||
/* Configure UDCCRx */ |
||||
tmp = 0; |
||||
tmp |= (config << UDCCONR_CN_S) & UDCCONR_CN; |
||||
tmp |= (interface << UDCCONR_IN_S) & UDCCONR_IN; |
||||
tmp |= (alternate << UDCCONR_AISN_S) & UDCCONR_AISN; |
||||
tmp |= (ep_num << UDCCONR_EN_S) & UDCCONR_EN; |
||||
tmp |= (ep_type << UDCCONR_ET_S) & UDCCONR_ET; |
||||
tmp |= ep_isout ? 0 : UDCCONR_ED; |
||||
tmp |= (ep_size << UDCCONR_MPS_S) & UDCCONR_MPS; |
||||
tmp |= UDCCONR_EE; |
||||
|
||||
UDCCN(ep_num) = tmp; |
||||
|
||||
usbdbg("UDCCR%c = %x", 'A' + ep_num-1, UDCCN(ep_num)); |
||||
usbdbg("UDCCSR%c = %x", 'A' + ep_num-1, UDCCSN(ep_num)); |
||||
} |
||||
|
||||
#define CONFIG_USB_DEV_PULLUP_GPIO 87 |
||||
|
||||
/* Connect the USB device to the bus */ |
||||
void udc_connect(void) |
||||
{ |
||||
usbdbg("UDC connect"); |
||||
|
||||
/* Turn on the USB connection by enabling the pullup resistor */ |
||||
set_GPIO_mode(CONFIG_USB_DEV_PULLUP_GPIO | GPIO_OUT); |
||||
GPSR(CONFIG_USB_DEV_PULLUP_GPIO) = GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO); |
||||
} |
||||
|
||||
/* Disconnect the USB device to the bus */ |
||||
void udc_disconnect(void) |
||||
{ |
||||
usbdbg("UDC disconnect"); |
||||
|
||||
/* Turn off the USB connection by disabling the pullup resistor */ |
||||
GPCR(CONFIG_USB_DEV_PULLUP_GPIO) = GPIO_bit(CONFIG_USB_DEV_PULLUP_GPIO); |
||||
} |
||||
|
||||
/* Switch on the UDC */ |
||||
void udc_enable(struct usb_device_instance *device) |
||||
{ |
||||
|
||||
ep0state = EP0_IDLE; |
||||
CKEN |= CKEN11_USB; |
||||
|
||||
/* enable endpoint 0, A, B's Packet Complete Interrupt. */ |
||||
UDCICR0 = 0x0000003f; |
||||
UDCICR1 = 0xa8000000; |
||||
|
||||
/* clear the interrupt status/control registers */ |
||||
UDCISR0 = 0xffffffff; |
||||
UDCISR1 = 0xffffffff; |
||||
|
||||
/* set UDC-enable */ |
||||
udc_set_mask_UDCCR(UDCCR_UDE); |
||||
|
||||
udc_device = device; |
||||
if (!ep0_urb) |
||||
ep0_urb = usbd_alloc_urb(udc_device, |
||||
udc_device->bus->endpoint_array); |
||||
else |
||||
usbinfo("ep0_urb %p already allocated", ep0_urb); |
||||
|
||||
usbdbg("UDC Enabled\n"); |
||||
} |
||||
|
||||
/* Need to check this again */ |
||||
void udc_disable(void) |
||||
{ |
||||
usbdbg("disable UDC"); |
||||
|
||||
udc_clear_mask_UDCCR(UDCCR_UDE); |
||||
|
||||
/* Disable clock for USB device */ |
||||
CKEN &= ~CKEN11_USB; |
||||
|
||||
/* Free ep0 URB */ |
||||
if (ep0_urb) { |
||||
usbd_dealloc_urb(ep0_urb); |
||||
ep0_urb = NULL; |
||||
} |
||||
|
||||
/* Reset device pointer */ |
||||
udc_device = NULL; |
||||
} |
||||
|
||||
/* Allow udc code to do any additional startup */ |
||||
void udc_startup_events(struct usb_device_instance *device) |
||||
{ |
||||
/* The DEVICE_INIT event puts the USB device in the state STATE_INIT */ |
||||
usbd_device_event_irq(device, DEVICE_INIT, 0); |
||||
|
||||
/* The DEVICE_CREATE event puts the USB device in the state
|
||||
* STATE_ATTACHED */ |
||||
usbd_device_event_irq(device, DEVICE_CREATE, 0); |
||||
|
||||
/* Some USB controller driver implementations signal
|
||||
* DEVICE_HUB_CONFIGURED and DEVICE_RESET events here. |
||||
* DEVICE_HUB_CONFIGURED causes a transition to the state |
||||
* STATE_POWERED, and DEVICE_RESET causes a transition to |
||||
* the state STATE_DEFAULT. |
||||
*/ |
||||
udc_enable(device); |
||||
} |
||||
|
||||
/* Initialize h/w stuff */ |
||||
int udc_init(void) |
||||
{ |
||||
udc_device = NULL; |
||||
usbdbg("PXA27x usbd start"); |
||||
|
||||
/* Disable the UDC */ |
||||
udc_clear_mask_UDCCR(UDCCR_UDE); |
||||
|
||||
/* Disable clock for USB device */ |
||||
CKEN &= ~CKEN11_USB; |
||||
|
||||
/* Disable IRQs: we don't use them */ |
||||
UDCICR0 = UDCICR1 = 0; |
||||
|
||||
return 0; |
||||
} |
||||
@ -0,0 +1,69 @@ |
||||
/*
|
||||
* PXA27x register declarations and HCD data structures |
||||
* |
||||
* Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it> |
||||
* Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it> |
||||
* |
||||
* This program is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU General Public License as |
||||
* published by the Free Software Foundation; either version 2 of |
||||
* the License, or (at your option) any later version. |
||||
* |
||||
* 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., 59 Temple Place, Suite 330, Boston, |
||||
* MA 02111-1307 USA |
||||
*/ |
||||
|
||||
|
||||
#ifndef __PXA270X_UDC_H__ |
||||
#define __PXA270X_UDC_H__ |
||||
|
||||
#include <asm/byteorder.h> |
||||
|
||||
/* Endpoint 0 states */ |
||||
#define EP0_IDLE 0 |
||||
#define EP0_IN_DATA 1 |
||||
#define EP0_OUT_DATA 2 |
||||
#define EP0_XFER_COMPLETE 3 |
||||
|
||||
|
||||
/* Endpoint parameters */ |
||||
#define MAX_ENDPOINTS 4 |
||||
#define EP_MAX_PACKET_SIZE 64 |
||||
|
||||
#define EP0_MAX_PACKET_SIZE 16 |
||||
#define UDC_OUT_ENDPOINT 0x02 |
||||
#define UDC_OUT_PACKET_SIZE EP_MAX_PACKET_SIZE |
||||
#define UDC_IN_ENDPOINT 0x01 |
||||
#define UDC_IN_PACKET_SIZE EP_MAX_PACKET_SIZE |
||||
#define UDC_INT_ENDPOINT 0x05 |
||||
#define UDC_INT_PACKET_SIZE EP_MAX_PACKET_SIZE |
||||
#define UDC_BULK_PACKET_SIZE EP_MAX_PACKET_SIZE |
||||
|
||||
void udc_irq(void); |
||||
/* Flow control */ |
||||
void udc_set_nak(int epid); |
||||
void udc_unset_nak(int epid); |
||||
|
||||
/* Higher level functions for abstracting away from specific device */ |
||||
int udc_endpoint_write(struct usb_endpoint_instance *endpoint); |
||||
|
||||
int udc_init(void); |
||||
|
||||
void udc_enable(struct usb_device_instance *device); |
||||
void udc_disable(void); |
||||
|
||||
void udc_connect(void); |
||||
void udc_disconnect(void); |
||||
|
||||
void udc_startup_events(struct usb_device_instance *device); |
||||
void udc_setup_ep(struct usb_device_instance *device, |
||||
unsigned int ep, struct usb_endpoint_instance *endpoint); |
||||
|
||||
#endif |
||||
Loading…
Reference in new issue