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| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2009-09-25 12:11:32 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-10-25 16:00:33 +0000 |
| commit | f51f78c06c7fb442d304b93b68b3a1ebe3785a55 (patch) | |
| tree | b93409cff89072685231a64bbabdba90a8db3187 /arch/arm | |
| parent | 2fdc246aaf9a7fa088451ad2a72e9119b5f7f029 (diff) | |
| download | linux-f51f78c06c7fb442d304b93b68b3a1ebe3785a55.tar.gz | |
ARM: 5726/1: at91/USB: at91sam9g45 series USB host integration
This is the at91 specific part of USB host integration. The EHCI high speed controller has a companion OHCI controller to manage USB full and low speed. They are sharing the same IRQ line and vbus pin. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-at91/at91sam9g45_devices.c | 56 | ||||
| -rw-r--r-- | arch/arm/mach-at91/board-sam9m10g45ek.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-at91/include/mach/board.h | 1 |
3 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index d581cff80c4c..003f4f91fa52 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -131,6 +131,62 @@ void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {} /* -------------------------------------------------------------------- + * USB Host HS (EHCI) + * Needs an OHCI host for low and full speed management + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE) +static u64 ehci_dmamask = DMA_BIT_MASK(32); +static struct at91_usbh_data usbh_ehci_data; + +static struct resource usbh_ehci_resources[] = { + [0] = { + .start = AT91SAM9G45_EHCI_BASE, + .end = AT91SAM9G45_EHCI_BASE + SZ_1M - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9G45_ID_UHPHS, + .end = AT91SAM9G45_ID_UHPHS, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device at91_usbh_ehci_device = { + .name = "atmel-ehci", + .id = -1, + .dev = { + .dma_mask = &ehci_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &usbh_ehci_data, + }, + .resource = usbh_ehci_resources, + .num_resources = ARRAY_SIZE(usbh_ehci_resources), +}; + +void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data) +{ + int i; + + if (!data) + return; + + /* Enable VBus control for UHP ports */ + for (i = 0; i < data->ports; i++) { + if (data->vbus_pin[i]) + at91_set_gpio_output(data->vbus_pin[i], 0); + } + + usbh_ehci_data = *data; + at91_clock_associate("uhphs_clk", &at91_usbh_ehci_device.dev, "ehci_clk"); + platform_device_register(&at91_usbh_ehci_device); +} +#else +void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data) {} +#endif + + +/* -------------------------------------------------------------------- * USB HS Device (Gadget) * -------------------------------------------------------------------- */ diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c index 64c3843f323d..1cf4d8681078 100644 --- a/arch/arm/mach-at91/board-sam9m10g45ek.c +++ b/arch/arm/mach-at91/board-sam9m10g45ek.c @@ -366,6 +366,7 @@ static void __init ek_board_init(void) at91_add_device_serial(); /* USB HS Host */ at91_add_device_usbh_ohci(&ek_usbh_hs_data); + at91_add_device_usbh_ehci(&ek_usbh_hs_data); /* USB HS Device */ at91_add_device_usba(&ek_usba_udc_data); /* SPI */ diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h index 2f4fcedc02ba..2295d80dd893 100644 --- a/arch/arm/mach-at91/include/mach/board.h +++ b/arch/arm/mach-at91/include/mach/board.h @@ -98,6 +98,7 @@ struct at91_usbh_data { }; extern void __init at91_add_device_usbh(struct at91_usbh_data *data); extern void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data); +extern void __init at91_add_device_usbh_ehci(struct at91_usbh_data *data); /* NAND / SmartMedia */ struct atmel_nand_data { |