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-rw-r--r--arch/mips/netlogic/xlr/platform.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlr/platform.c b/arch/mips/netlogic/xlr/platform.c
index eab64b4..71b44d8 100644
--- a/arch/mips/netlogic/xlr/platform.c
+++ b/arch/mips/netlogic/xlr/platform.c
@@ -14,6 +14,7 @@
#include <linux/resource.h>
#include <linux/serial_8250.h>
#include <linux/serial_reg.h>
+#include <linux/i2c.h>
#include <asm/netlogic/haldefs.h>
#include <asm/netlogic/xlr/iomap.h>
@@ -97,3 +98,142 @@ 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
+
+#ifdef CONFIG_I2C
+static struct i2c_board_info nlm_i2c_board_info1[] __initdata = {
+ /* All XLR boards have this RTC and Max6657 Temp Chip */
+ [0] = {
+ .type = "ds1374",
+ .addr = 0x68
+ },
+ [1] = {
+ .type = "lm90",
+ .addr = 0x4c
+ },
+};
+
+static struct resource i2c_resources[] = {
+ [0] = {
+ .start = 0, /* filled at init */
+ .end = 0,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device nlm_xlr_i2c_1 = {
+ .name = "xlr-i2cbus",
+ .id = 1,
+ .num_resources = 1,
+ .resource = i2c_resources,
+};
+
+static int __init nlm_i2c_init(void)
+{
+ int err = 0;
+ unsigned int offset;
+
+ /* I2C bus 0 does not have any useful devices, configure only bus 1 */
+ offset = NETLOGIC_IO_I2C_1_OFFSET;
+ nlm_xlr_i2c_1.resource[0].start = CPHYSADDR(nlm_mmio_base(offset));
+ nlm_xlr_i2c_1.resource[0].end = nlm_xlr_i2c_1.resource[0].start + 0xfff;
+
+ platform_device_register(&nlm_xlr_i2c_1);
+
+ err = i2c_register_board_info(1, nlm_i2c_board_info1,
+ ARRAY_SIZE(nlm_i2c_board_info1));
+ if (err < 0)
+ pr_err("nlm-i2c: cannot register board I2C devices\n");
+ return err;
+}
+
+arch_initcall(nlm_i2c_init);
+#endif