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Commit f35574a3 authored by Jayachandran C's avatar Jayachandran C Committed by Ralf Baechle
Browse files

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: default avatarJayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3759/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent c5a48ff8

arch/mips/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -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.

arch/mips/netlogic/xlr/platform.c

+89 −0
Original line number Diff line number Diff line
@@ -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