diff options
Diffstat (limited to 'arch/arm/mach-at91/at91cap9_devices.c')
| -rw-r--r-- | arch/arm/mach-at91/at91cap9_devices.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91cap9_devices.c b/arch/arm/mach-at91/at91cap9_devices.c index be526746e01e..747b9dedab88 100644 --- a/arch/arm/mach-at91/at91cap9_devices.c +++ b/arch/arm/mach-at91/at91cap9_devices.c @@ -84,6 +84,105 @@ void __init at91_add_device_usbh(struct at91_usbh_data *data) {} /* -------------------------------------------------------------------- + * USB HS Device (Gadget) + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_USB_GADGET_ATMEL_USBA) || defined(CONFIG_USB_GADGET_ATMEL_USBA_MODULE) + +static struct resource usba_udc_resources[] = { + [0] = { + .start = AT91CAP9_UDPHS_FIFO, + .end = AT91CAP9_UDPHS_FIFO + SZ_512K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91CAP9_BASE_UDPHS, + .end = AT91CAP9_BASE_UDPHS + SZ_1K - 1, + .flags = IORESOURCE_MEM, + }, + [2] = { + .start = AT91CAP9_ID_UDPHS, + .end = AT91CAP9_ID_UDPHS, + .flags = IORESOURCE_IRQ, + }, +}; + +#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \ + [idx] = { \ + .name = nam, \ + .index = idx, \ + .fifo_size = maxpkt, \ + .nr_banks = maxbk, \ + .can_dma = dma, \ + .can_isoc = isoc, \ + } + +static struct usba_ep_data usba_udc_ep[] = { + EP("ep0", 0, 64, 1, 0, 0), + EP("ep1", 1, 1024, 3, 1, 1), + EP("ep2", 2, 1024, 3, 1, 1), + EP("ep3", 3, 1024, 2, 1, 1), + EP("ep4", 4, 1024, 2, 1, 1), + EP("ep5", 5, 1024, 2, 1, 0), + EP("ep6", 6, 1024, 2, 1, 0), + EP("ep7", 7, 1024, 2, 0, 0), +}; + +#undef EP + +/* + * pdata doesn't have room for any endpoints, so we need to + * append room for the ones we need right after it. + */ +static struct { + struct usba_platform_data pdata; + struct usba_ep_data ep[8]; +} usba_udc_data; + +static struct platform_device at91_usba_udc_device = { + .name = "atmel_usba_udc", + .id = -1, + .dev = { + .platform_data = &usba_udc_data.pdata, + }, + .resource = usba_udc_resources, + .num_resources = ARRAY_SIZE(usba_udc_resources), +}; + +void __init at91_add_device_usba(struct usba_platform_data *data) +{ + at91_sys_write(AT91_MATRIX_UDPHS, AT91_MATRIX_SELECT_UDPHS | + AT91_MATRIX_UDPHS_BYPASS_LOCK); + + /* + * Invalid pins are 0 on AT91, but the usba driver is shared + * with AVR32, which use negative values instead. Once/if + * gpio_is_valid() is ported to AT91, revisit this code. + */ + usba_udc_data.pdata.vbus_pin = -EINVAL; + usba_udc_data.pdata.num_ep = ARRAY_SIZE(usba_udc_ep); + memcpy(usba_udc_data.ep, usba_udc_ep, sizeof(usba_udc_ep));; + + if (data && data->vbus_pin > 0) { + at91_set_gpio_input(data->vbus_pin, 0); + at91_set_deglitch(data->vbus_pin, 1); + usba_udc_data.pdata.vbus_pin = data->vbus_pin; + } + + /* Pullup pin is handled internally by USB device peripheral */ + + /* Clocks */ + at91_clock_associate("utmi_clk", &at91_usba_udc_device.dev, "hclk"); + at91_clock_associate("udphs_clk", &at91_usba_udc_device.dev, "pclk"); + + platform_device_register(&at91_usba_udc_device); +} +#else +void __init at91_add_device_usba(struct usba_platform_data *data) {} +#endif + + +/* -------------------------------------------------------------------- * Ethernet * -------------------------------------------------------------------- */ |