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MIPS: Netlogic: Platform changes for XLS USB 

Add USB initialization code, setup resources and add USB platform
driver in mips/netlogic/xlr/platform.c.
Add USB support for XLR/XLS platform in Kconfig.

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3759/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Jayachandran C 2012-07-24 17:28:53 +02:00 committed by Ralf Baechle
parent c5a48ff81e
commit f35574a3ab
2 changed files with 91 additions and 0 deletions
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2
arch/mips/Kconfig
View File

@ -787,6 +787,8 @@ config NLM_XLR_BOARD
select ZONE_DMA if 64BIT
select SYNC_R4K
select SYS_HAS_EARLY_PRINTK
select USB_ARCH_HAS_OHCI if USB_SUPPORT
select USB_ARCH_HAS_EHCI if USB_SUPPORT
help
Support for systems based on Netlogic XLR and XLS processors.
Say Y here if you have a XLR or XLS based board.

89
arch/mips/netlogic/xlr/platform.c
View File

@ -97,3 +97,92 @@ static int __init nlm_uart_init(void)
}
arch_initcall(nlm_uart_init);
#ifdef CONFIG_USB
/* Platform USB devices, only on XLS chips */
static u64 xls_usb_dmamask = ~(u32)0;
#define USB_PLATFORM_DEV(n, i, irq) \
{ \
.name = n, \
.id = i, \
.num_resources = 2, \
.dev = { \
.dma_mask = &xls_usb_dmamask, \
.coherent_dma_mask = 0xffffffff, \
}, \
.resource = (struct resource[]) { \
{ \
.flags = IORESOURCE_MEM, \
}, \
{ \
.start = irq, \
.end = irq, \
.flags = IORESOURCE_IRQ, \
}, \
}, \
}
static struct platform_device xls_usb_ehci_device =
USB_PLATFORM_DEV("ehci-xls", 0, PIC_USB_IRQ);
static struct platform_device xls_usb_ohci_device_0 =
USB_PLATFORM_DEV("ohci-xls-0", 1, PIC_USB_IRQ);
static struct platform_device xls_usb_ohci_device_1 =
USB_PLATFORM_DEV("ohci-xls-1", 2, PIC_USB_IRQ);
static struct platform_device *xls_platform_devices[] = {
&xls_usb_ehci_device,
&xls_usb_ohci_device_0,
&xls_usb_ohci_device_1,
};
int xls_platform_usb_init(void)
{
uint64_t usb_mmio, gpio_mmio;
unsigned long memres;
uint32_t val;
if (!nlm_chip_is_xls())
return 0;
gpio_mmio = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET);
usb_mmio = nlm_mmio_base(NETLOGIC_IO_USB_1_OFFSET);
/* Clear Rogue Phy INTs */
nlm_write_reg(usb_mmio, 49, 0x10000000);
/* Enable all interrupts */
nlm_write_reg(usb_mmio, 50, 0x1f000000);
/* Enable ports */
nlm_write_reg(usb_mmio, 1, 0x07000500);
val = nlm_read_reg(gpio_mmio, 21);
if (((val >> 22) & 0x01) == 0) {
pr_info("Detected USB Device mode - Not supported!\n");
nlm_write_reg(usb_mmio, 0, 0x01000000);
return 0;
}
pr_info("Detected USB Host mode - Adding XLS USB devices.\n");
/* Clear reset, host mode */
nlm_write_reg(usb_mmio, 0, 0x02000000);
/* Memory resource for various XLS usb ports */
usb_mmio = nlm_mmio_base(NETLOGIC_IO_USB_0_OFFSET);
memres = CPHYSADDR((unsigned long)usb_mmio);
xls_usb_ehci_device.resource[0].start = memres;
xls_usb_ehci_device.resource[0].end = memres + 0x400 - 1;
memres += 0x400;
xls_usb_ohci_device_0.resource[0].start = memres;
xls_usb_ohci_device_0.resource[0].end = memres + 0x400 - 1;
memres += 0x400;
xls_usb_ohci_device_1.resource[0].start = memres;
xls_usb_ohci_device_1.resource[0].end = memres + 0x400 - 1;
return platform_add_devices(xls_platform_devices,
ARRAY_SIZE(xls_platform_devices));
}
arch_initcall(xls_platform_usb_init);
#endif