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-rw-r--r--drivers/usb/gadget/at91_udc.c42
-rw-r--r--drivers/usb/gadget/at91_udc.h6
2 files changed, 42 insertions, 6 deletions
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index b53b93700ca..c8954a6ddf8 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -51,6 +51,8 @@
#include <asm/arch/gpio.h>
#include <asm/arch/board.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/at91sam9261_matrix.h>
#include "at91_udc.h"
@@ -909,11 +911,37 @@ static void pullup(struct at91_udc *udc, int is_on)
if (is_on) {
clk_on(udc);
at91_udp_write(udc, AT91_UDP_TXVC, 0);
- at91_set_gpio_value(udc->board.pullup_pin, 1);
+ if (cpu_is_at91rm9200())
+ at91_set_gpio_value(udc->board.pullup_pin, 1);
+ else if (cpu_is_at91sam9260()) {
+ u32 txvc = at91_udp_read(udc, AT91_UDP_TXVC);
+
+ txvc |= AT91_UDP_TXVC_PUON;
+ at91_udp_write(udc, AT91_UDP_TXVC, txvc);
+ } else if (cpu_is_at91sam9261()) {
+ u32 usbpucr;
+
+ usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR);
+ usbpucr |= AT91_MATRIX_USBPUCR_PUON;
+ at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr);
+ }
} else {
stop_activity(udc);
at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
- at91_set_gpio_value(udc->board.pullup_pin, 0);
+ if (cpu_is_at91rm9200())
+ at91_set_gpio_value(udc->board.pullup_pin, 0);
+ else if (cpu_is_at91sam9260()) {
+ u32 txvc = at91_udp_read(udc, AT91_UDP_TXVC);
+
+ txvc &= ~AT91_UDP_TXVC_PUON;
+ at91_udp_write(udc, AT91_UDP_TXVC, txvc);
+ } else if (cpu_is_at91sam9261()) {
+ u32 usbpucr;
+
+ usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR);
+ usbpucr &= ~AT91_MATRIX_USBPUCR_PUON;
+ at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr);
+ }
clk_off(udc);
}
}
@@ -1668,7 +1696,8 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
udc->fclk = clk_get(dev, "udpck");
if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) {
DBG("clocks missing\n");
- return -ENODEV;
+ retval = -ENODEV;
+ goto fail0;
}
retval = device_register(&udc->gadget.dev);
@@ -1679,6 +1708,8 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
clk_enable(udc->iclk);
at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
at91_udp_write(udc, AT91_UDP_IDR, 0xffffffff);
+ /* Clear all pending interrupts - UDP may be used by bootloader. */
+ at91_udp_write(udc, AT91_UDP_ICR, 0xffffffff);
clk_disable(udc->iclk);
/* request UDC and maybe VBUS irqs */
@@ -1690,6 +1721,11 @@ static int __devinit at91udc_probe(struct platform_device *pdev)
goto fail1;
}
if (udc->board.vbus_pin > 0) {
+ /*
+ * Get the initial state of VBUS - we cannot expect
+ * a pending interrupt.
+ */
+ udc->vbus = at91_get_gpio_value(udc->board.vbus_pin);
if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
IRQF_DISABLED, driver_name, udc)) {
DBG("request vbus irq %d failed\n",
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
index a35f3b627d3..677089baa59 100644
--- a/drivers/usb/gadget/at91_udc.h
+++ b/drivers/usb/gadget/at91_udc.h
@@ -51,10 +51,10 @@
#define AT91_UDP_EP(n) (1 << (n)) /* Endpoint Interrupt Status */
#define AT91_UDP_RXSUSP (1 << 8) /* USB Suspend Interrupt Status */
#define AT91_UDP_RXRSM (1 << 9) /* USB Resume Interrupt Status */
-#define AT91_UDP_EXTRSM (1 << 10) /* External Resume Interrupt Status */
+#define AT91_UDP_EXTRSM (1 << 10) /* External Resume Interrupt Status [AT91RM9200 only] */
#define AT91_UDP_SOFINT (1 << 11) /* Start of Frame Interrupt Status */
#define AT91_UDP_ENDBUSRES (1 << 12) /* End of Bus Reset Interrpt Status */
-#define AT91_UDP_WAKEUP (1 << 13) /* USB Wakeup Interrupt Status */
+#define AT91_UDP_WAKEUP (1 << 13) /* USB Wakeup Interrupt Status [AT91RM9200 only] */
#define AT91_UDP_ICR 0x20 /* Interrupt Clear Register */
#define AT91_UDP_RST_EP 0x28 /* Reset Endpoint Register */
@@ -84,7 +84,7 @@
#define AT91_UDP_TXVC 0x74 /* Transceiver Control Register */
#define AT91_UDP_TXVC_TXVDIS (1 << 8) /* Transceiver Disable */
-
+#define AT91_UDP_TXVC_PUON (1 << 9) /* PullUp On [AT91SAM9260 only] */
/*-------------------------------------------------------------------------*/