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[platform][stellaris] start of usb driver for stellaris

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This commit is contained in:
Travis Geiselbrecht
2013-09-09 15:01:34 -07:00
parent 65c9778d90
commit e3774f7108
7 changed files with 364 additions and 2 deletions
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2
platform/stellaris/include/ti_driverlib.h
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@@ -13,5 +13,7 @@ __BEGIN_CDECLS
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/timer.h"
#include "driverlib/usb.h"
#include "driverlib/rom.h"
__END_CDECLS

2
platform/stellaris/init.c
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@@ -23,8 +23,10 @@
*/
#include <err.h>
#include <stdio.h>
#include <debug.h>
#include <platform.h>
#include <dev/usb.h>
#include "ti_driverlib.h"

4
platform/stellaris/rules.mk
View File

@@ -32,6 +32,7 @@ MODULE_SRCS += \
$(LOCAL_DIR)/gpio.c \
$(LOCAL_DIR)/init.c \
$(LOCAL_DIR)/timer.c \
$(LOCAL_DIR)/usbc.c \
$(LOCAL_DIR)/vectab.c \
@@ -54,7 +55,8 @@ LINKER_SCRIPT += \
$(BUILDDIR)/system-twosegment.ld
MODULE_DEPS += \
lib/cbuf
lib/cbuf \
dev/usb
include $(LOCAL_DIR)/ti/rules.mk

252
platform/stellaris/usbc.c Normal file
View File

@@ -0,0 +1,252 @@
/*
* Copyright (c) 2013 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <err.h>
#include <stdio.h>
#include <trace.h>
#include <platform.h>
#include <reg.h>
#include <dev/usb.h>
#include <dev/usbc.h>
#include <arch/arm/cm.h>
#include "ti_driverlib.h"
#include "inc/hw_usb.h"
#define LOCAL_TRACE 0
static bool pending_addr_change = false;
static uint8_t addr;
static void usbc_dump_regs(void)
{
printf("USB0 reg dump:\n");
#define DUMPREG8(r) printf("\t" #r ": 0x%hhx\n", *REG8(USB0_BASE + (r)));
#define DUMPREG16(r) printf("\t" #r ": 0x%hx\n", *REG16(USB0_BASE + (r)));
#define DUMPREG32(r) printf("\t" #r ": 0x%x\n", *REG32(USB0_BASE + (r)));
DUMPREG8(USB_O_FADDR);
DUMPREG8(USB_O_POWER);
DUMPREG16(USB_O_TXIS);
DUMPREG16(USB_O_RXIS);
DUMPREG16(USB_O_TXIE);
DUMPREG16(USB_O_RXIE);
DUMPREG8(USB_O_IS);
DUMPREG8(USB_O_IE);
DUMPREG16(USB_O_FRAME);
DUMPREG8(USB_O_EPIDX);
DUMPREG8(USB_O_TEST);
DUMPREG32(USB_O_FIFO0);
DUMPREG32(USB_O_FIFO1);
DUMPREG32(USB_O_FIFO2);
DUMPREG32(USB_O_FIFO3);
DUMPREG32(USB_O_FIFO4);
DUMPREG32(USB_O_FIFO5);
DUMPREG32(USB_O_FIFO6);
DUMPREG32(USB_O_FIFO7);
DUMPREG32(USB_O_FIFO8);
DUMPREG32(USB_O_FIFO9);
DUMPREG32(USB_O_FIFO10);
DUMPREG32(USB_O_FIFO11);
DUMPREG32(USB_O_FIFO12);
DUMPREG32(USB_O_FIFO13);
DUMPREG32(USB_O_FIFO14);
DUMPREG32(USB_O_FIFO15);
DUMPREG16(USB_O_DEVCTL);
DUMPREG8(USB_O_TXFIFOSZ);
DUMPREG8(USB_O_RXFIFOSZ);
DUMPREG16(USB_O_TXFIFOADD);
DUMPREG16(USB_O_RXFIFOADD);
DUMPREG32(USB_O_PP);
#undef DUMPREG8
#undef DUMPREG16
#undef DUMPREG32
}
void stellaris_usbc_early_init(void)
{
LTRACE_ENTRY;
LTRACE_EXIT;
}
void stellaris_usbc_init(void)
{
LTRACE_ENTRY;
SysCtlPeripheralEnable(SYSCTL_PERIPH_USB0);
SysCtlPeripheralReset(SYSCTL_PERIPH_USB0);
SysCtlUSBPLLEnable();
GPIOPinTypeUSBAnalog(GPIO_PORTD_AHB_BASE, GPIO_PIN_4 | GPIO_PIN_5);
USBDevMode(USB0_BASE);
USBPHYPowerOn(USB0_BASE);
#if LOCAL_TRACE
usbc_dump_regs();
printf("addr %lu\n", USBDevAddrGet(USB0_BASE));
printf("ep0 status 0x%lx\n", USBEndpointStatus(USB0_BASE, USB_EP_0));
#endif
NVIC_EnableIRQ(INT_USB0 - 16);
USBIntDisableControl(USB0_BASE, USB_INTCTRL_ALL);
LTRACE_EXIT;
}
static void ep0_irq(void)
{
uint status = USBEndpointStatus(USB0_BASE, USB_EP_0);
LTRACEF("ep0 status 0x%x\n", status);
/* delay setting the address until the ack as completed */
if (pending_addr_change) {
LTRACEF("pending addr change\n");
USBDevAddrSet(USB0_BASE, addr);
pending_addr_change = false;
}
if (status & USB_DEV_EP0_OUT_PKTRDY) {
LTRACEF("pktrdy\n");
uchar buf[sizeof(struct usb_setup)];
ulong avail = sizeof(buf);
if (USBEndpointDataGet(USB0_BASE, USB_EP_0, buf, &avail) < 0 || avail != sizeof(buf)) {
LTRACEF("short setup packet, size %lu\n", avail);
} else {
union usb_callback_args args;
args.setup = (void *)buf;
usb_callback(CB_SETUP_MSG, &args);
}
}
if (status & USB_DEV_EP0_SENT_STALL) {
LTRACEF("stall complete\n");
USBDevEndpointStallClear(USB0_BASE, USB_EP_0, 0);
}
}
void stellaris_usb0_irq(void)
{
arm_cm_irq_entry();
uint status = USBIntStatusControl(USB0_BASE);
//LTRACEF("usb irq, status 0x%x\n", status);
if (status & USB_INTCTRL_RESET) {
// reset
LTRACEF("reset\n");
pending_addr_change = false;
usb_callback(CB_RESET, NULL);
}
if (status & USB_INTCTRL_CONNECT) {
// reset
LTRACEF("connect\n");
}
status = USBIntStatusEndpoint(USB0_BASE);
if (status & USB_INTEP_0) {
// ep0
//LTRACEF("ep0\n");
ep0_irq();
}
arm_cm_irq_exit(true);
}
void usbc_ep0_ack(void)
{
LTRACE_ENTRY;
USBDevEndpointDataAck(USB0_BASE, USB_EP_0, true);
}
void usbc_ep0_stall(void)
{
LTRACE_ENTRY;
USBDevEndpointStall(USB0_BASE, USB_EP_0, 0);
}
void usbc_ep0_send(const void *buf, size_t len, size_t maxlen)
{
LTRACEF("buf %p, len %zu, maxlen %zu\n", buf, len, maxlen);
USBEndpointDataPut(USB0_BASE, USB_EP_0, (void *)buf, len);
USBEndpointDataSend(USB0_BASE, USB_EP_0, USB_TRANS_SETUP);
}
void usbc_set_address(uint8_t address)
{
LTRACEF("address 0x%hhx\n", address);
addr = address;
pending_addr_change = true;
}
void usbc_ep0_recv(void *buf, size_t len, ep_callback cb)
{
PANIC_UNIMPLEMENTED;
}
bool usbc_is_highspeed(void)
{
return false;
}
status_t usbc_set_active(bool active)
{
LTRACEF("active %d\n", active);
if (active) {
USBIntEnableControl(USB0_BASE, USB_INTCTRL_CONNECT | USB_INTCTRL_RESET);
USBIntEnableEndpoint(USB0_BASE, USB_INTEP_0);
USBDevConnect(USB0_BASE);
} else {
USBDevDisconnect(USB0_BASE);
}
return NO_ERROR;
}
void usbc_setup_endpoint(ep_t ep, ep_dir_t dir, bool active, ep_callback callback, uint width, uint blocksize)
{
PANIC_UNIMPLEMENTED;
}
status_t usbc_queue_rx(ep_t ep, usbc_transfer *transfer)
{
PANIC_UNIMPLEMENTED;
}
status_t usbc_queue_tx(ep_t ep, usbc_transfer *transfer)
{
PANIC_UNIMPLEMENTED;
}
// vim: set ts=4 sw=4 noexpandtab: