ramips: rt305x: add OHCI/EHCI registration code for RT3352

[openwrt/svn-archive/archive.git] / target / linux / ramips / files / arch / mips / ralink / rt305x / devices.c

diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c
index 60e57117973c46ca66687012b1826f4904df2ca6..bebab8171a00a4bb5e3c7db23afdb85865c4a7c1 100644 (file)
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/devices.c
@@ -16,6 +16,8 @@
 #include <linux/mtd/physmap.h>
 #include <linux/spi/spi.h>
 #include <linux/rt2x00_platform.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
 
 #include <asm/addrspace.h>
 
@@ -25,6 +27,8 @@
 
 #include <ramips_eth_platform.h>
 #include <rt305x_esw_platform.h>
+#include <rt3883_ehci_platform.h>
+#include <rt3883_ohci_platform.h>
 
 static struct resource rt305x_flash0_resources[] = {
        {
@@ -257,7 +261,7 @@ void __init rt305x_register_spi(struct spi_board_info *info, int n)
        platform_device_register(&rt305x_spi_device);
 }
 
-static struct resource rt305x_usb_resources[] = {
+static struct resource rt305x_dwc_otg_resources[] = {
        {
                .start  = RT305X_OTG_BASE,
                .end    = RT305X_OTG_BASE + 0x3FFFF,
@@ -269,16 +273,134 @@ static struct resource rt305x_usb_resources[] = {
        },
 };
 
-static struct platform_device rt305x_usb_device = {
+static struct platform_device rt305x_dwc_otg_device = {
        .name                   = "dwc_otg",
-       .resource               = rt305x_usb_resources,
-       .num_resources  = ARRAY_SIZE(rt305x_usb_resources),
+       .resource               = rt305x_dwc_otg_resources,
+       .num_resources  = ARRAY_SIZE(rt305x_dwc_otg_resources),
        .dev = {
                .platform_data = NULL,
        }
 };
 
+static atomic_t rt3352_usb_use_count = ATOMIC_INIT(0);
+
+static void rt3352_usb_host_start(void)
+{
+       u32 t;
+
+       if (atomic_inc_return(&rt3352_usb_use_count) != 1)
+               return;
+
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
+
+       /* enable clock for port0's and port1's phys */
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
+       t = t | RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN;
+       rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
+       mdelay(500);
+
+       /* pull USBHOST and USBDEV out from reset */
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
+       t &= ~(RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV);
+       rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
+       mdelay(500);
+
+       /* enable host mode */
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_SYSCFG1);
+       t |= RT3352_SYSCFG1_USB0_HOST_MODE;
+       rt305x_sysc_wr(t, RT3352_SYSC_REG_SYSCFG1);
+
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
+}
+
+static void rt3352_usb_host_stop(void)
+{
+       u32 t;
+
+       if (atomic_dec_return(&rt3352_usb_use_count) != 0)
+               return;
+
+       /* put USBHOST and USBDEV into reset */
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
+       t |= RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV;
+       rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
+       udelay(10000);
+
+       /* disable clock for port0's and port1's phys*/
+       t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
+       t &= ~(RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN);
+       rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
+       udelay(10000);
+}
+
+static struct rt3883_ehci_platform_data rt3352_ehci_data = {
+       .start_hw       = rt3352_usb_host_start,
+       .stop_hw        = rt3352_usb_host_stop,
+};
+
+static struct resource rt3352_ehci_resources[] = {
+       {
+               .start  = RT3352_EHCI_BASE,
+               .end    = RT3352_EHCI_BASE + RT3352_EHCI_SIZE - 1,
+               .flags  = IORESOURCE_MEM,
+       }, {
+               .start  = RT305X_INTC_IRQ_OTG,
+               .end    = RT305X_INTC_IRQ_OTG,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static u64 rt3352_ehci_dmamask = DMA_BIT_MASK(32);
+static struct platform_device rt3352_ehci_device = {
+       .name           = "rt3352-ehci",
+       .id             = -1,
+       .resource       = rt3352_ehci_resources,
+       .num_resources  = ARRAY_SIZE(rt3352_ehci_resources),
+       .dev            = {
+               .dma_mask               = &rt3352_ehci_dmamask,
+               .coherent_dma_mask      = DMA_BIT_MASK(32),
+               .platform_data          = &rt3352_ehci_data,
+       },
+};
+
+static struct resource rt3352_ohci_resources[] = {
+       {
+               .start  = RT3352_OHCI_BASE,
+               .end    = RT3352_OHCI_BASE + RT3352_OHCI_SIZE - 1,
+               .flags  = IORESOURCE_MEM,
+       }, {
+               .start  = RT305X_INTC_IRQ_OTG,
+               .end    = RT305X_INTC_IRQ_OTG,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct rt3883_ohci_platform_data rt3352_ohci_data = {
+       .start_hw       = rt3352_usb_host_start,
+       .stop_hw        = rt3352_usb_host_stop,
+};
+
+static u64 rt3352_ohci_dmamask = DMA_BIT_MASK(32);
+static struct platform_device rt3352_ohci_device = {
+       .name           = "rt3352-ohci",
+       .id             = -1,
+       .resource       = rt3352_ohci_resources,
+       .num_resources  = ARRAY_SIZE(rt3352_ohci_resources),
+       .dev            = {
+               .dma_mask               = &rt3352_ohci_dmamask,
+               .coherent_dma_mask      = DMA_BIT_MASK(32),
+               .platform_data          = &rt3352_ohci_data,
+       },
+};
+
 void __init rt305x_register_usb(void)
 {
-       platform_device_register(&rt305x_usb_device);
+       if (soc_is_rt305x() || soc_is_rt3350()) {
+               platform_device_register(&rt305x_dwc_otg_device);
+       } else if (soc_is_rt3352()) {
+               platform_device_register(&rt3352_ehci_device);
+               platform_device_register(&rt3352_ohci_device);
+       } else {
+               BUG();
+       }
 }