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>

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>
Jayachandran C · Ralf Baechle
1 parent c5a48ff81e
Showing 2 changed files with 91 additions and 0 deletions Side-by-side Diff
arch/mips/Kconfig
arch/mips/netlogic/xlr/platform.c
@@ -787,6 +787,8 @@
 	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.
@@ -97,4 +97,93 @@
 }
  
 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
...	...	@@ -787,6 +787,8 @@
787	787	select ZONE_DMA if 64BIT
788	788	select SYNC_R4K
789	789	select SYS_HAS_EARLY_PRINTK
	790	+ select USB_ARCH_HAS_OHCI if USB_SUPPORT
	791	+ select USB_ARCH_HAS_EHCI if USB_SUPPORT
790	792	help
791	793	Support for systems based on Netlogic XLR and XLS processors.
792	794	Say Y here if you have a XLR or XLS based board.
...	...	@@ -97,4 +97,93 @@
97	97	}
98	98
99	99	arch_initcall(nlm_uart_init);
	100	+
	101	+#ifdef CONFIG_USB
	102	+/* Platform USB devices, only on XLS chips */
	103	+static u64 xls_usb_dmamask = ~(u32)0;
	104	+#define USB_PLATFORM_DEV(n, i, irq) \
	105	+ { \
	106	+ .name = n, \
	107	+ .id = i, \
	108	+ .num_resources = 2, \
	109	+ .dev = { \
	110	+ .dma_mask = &xls_usb_dmamask, \
	111	+ .coherent_dma_mask = 0xffffffff, \
	112	+ }, \
	113	+ .resource = (struct resource[]) { \
	114	+ { \
	115	+ .flags = IORESOURCE_MEM, \
	116	+ }, \
	117	+ { \
	118	+ .start = irq, \
	119	+ .end = irq, \
	120	+ .flags = IORESOURCE_IRQ, \
	121	+ }, \
	122	+ }, \
	123	+ }
	124	+
	125	+static struct platform_device xls_usb_ehci_device =
	126	+ USB_PLATFORM_DEV("ehci-xls", 0, PIC_USB_IRQ);
	127	+static struct platform_device xls_usb_ohci_device_0 =
	128	+ USB_PLATFORM_DEV("ohci-xls-0", 1, PIC_USB_IRQ);
	129	+static struct platform_device xls_usb_ohci_device_1 =
	130	+ USB_PLATFORM_DEV("ohci-xls-1", 2, PIC_USB_IRQ);
	131	+
	132	+static struct platform_device *xls_platform_devices[] = {
	133	+ &xls_usb_ehci_device,
	134	+ &xls_usb_ohci_device_0,
	135	+ &xls_usb_ohci_device_1,
	136	+};
	137	+
	138	+int xls_platform_usb_init(void)
	139	+{
	140	+ uint64_t usb_mmio, gpio_mmio;
	141	+ unsigned long memres;
	142	+ uint32_t val;
	143	+
	144	+ if (!nlm_chip_is_xls())
	145	+ return 0;
	146	+
	147	+ gpio_mmio = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET);
	148	+ usb_mmio = nlm_mmio_base(NETLOGIC_IO_USB_1_OFFSET);
	149	+
	150	+ /* Clear Rogue Phy INTs */
	151	+ nlm_write_reg(usb_mmio, 49, 0x10000000);
	152	+ /* Enable all interrupts */
	153	+ nlm_write_reg(usb_mmio, 50, 0x1f000000);
	154	+
	155	+ /* Enable ports */
	156	+ nlm_write_reg(usb_mmio, 1, 0x07000500);
	157	+
	158	+ val = nlm_read_reg(gpio_mmio, 21);
	159	+ if (((val >> 22) & 0x01) == 0) {
	160	+ pr_info("Detected USB Device mode - Not supported!\n");
	161	+ nlm_write_reg(usb_mmio, 0, 0x01000000);
	162	+ return 0;
	163	+ }
	164	+
	165	+ pr_info("Detected USB Host mode - Adding XLS USB devices.\n");
	166	+ /* Clear reset, host mode */
	167	+ nlm_write_reg(usb_mmio, 0, 0x02000000);
	168	+
	169	+ /* Memory resource for various XLS usb ports */
	170	+ usb_mmio = nlm_mmio_base(NETLOGIC_IO_USB_0_OFFSET);
	171	+ memres = CPHYSADDR((unsigned long)usb_mmio);
	172	+ xls_usb_ehci_device.resource[0].start = memres;
	173	+ xls_usb_ehci_device.resource[0].end = memres + 0x400 - 1;
	174	+
	175	+ memres += 0x400;
	176	+ xls_usb_ohci_device_0.resource[0].start = memres;
	177	+ xls_usb_ohci_device_0.resource[0].end = memres + 0x400 - 1;
	178	+
	179	+ memres += 0x400;
	180	+ xls_usb_ohci_device_1.resource[0].start = memres;
	181	+ xls_usb_ohci_device_1.resource[0].end = memres + 0x400 - 1;
	182	+
	183	+ return platform_add_devices(xls_platform_devices,
	184	+ ARRAY_SIZE(xls_platform_devices));
	185	+}
	186	+
	187	+arch_initcall(xls_platform_usb_init);
	188	+#endif