arch/arm/mach-omap2/usb-ehci.c

   1 /*
   2  * linux/arch/arm/mach-omap2/usb-ehci.c
   3  *
   4  * This file will contain the board specific details for the
   5  * Synopsys EHCI host controller on OMAP3430
   6  *
   7  * Copyright (C) 2008 Nokia Corporation
   8  * Author: Felipe Balbi <felipe.balbi@nokia.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/types.h>
  16 #include <linux/errno.h>
  17 #include <linux/delay.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/clk.h>
  20 #include <asm/io.h>
  21 #include <asm/arch/mux.h>
  22 #include <linux/usb/musb.h>
  23
  24 #include <asm/arch/hardware.h>
  25 #include <asm/arch/pm.h>
  26 #include <asm/arch/usb.h>
  27
  28 #if     defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
  29 static struct resource ehci_resources[] = {
  30         [0] = {
  31                 .start   = OMAP34XX_HSUSB_HOST_BASE + 0x800,
  32                 .end     = OMAP34XX_HSUSB_HOST_BASE + 0x800 + SZ_1K - 1,
  33                 .flags   = IORESOURCE_MEM,
  34         },
  35         [1] = {         /* general IRQ */
  36                 .start   = INT_34XX_EHCI_IRQ,
  37                 .flags   = IORESOURCE_IRQ,
  38         }
  39 };
  40
  41 static u64 ehci_dmamask = ~(u32)0;
  42 static struct platform_device ehci_device = {
  43         .name           = "ehci-omap",
  44         .id             = 0,
  45         .dev = {
  46                 .dma_mask               = &ehci_dmamask,
  47                 .coherent_dma_mask      = 0xffffffff,
  48                 .platform_data          = 0x0,
  49         },
  50         .num_resources  = ARRAY_SIZE(ehci_resources),
  51         .resource       = ehci_resources,
  52 };
  53
  54
  55 /* MUX settings for EHCI pins */
  56 /*
  57  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
  58  */
  59 static void setup_ehci_io_mux(void)
  60 {
  61 #ifdef CONFIG_OMAP_EHCI_PHY_MODE
  62         /* PHY mode of operation for board: 750-2083-001
  63          * ISP1504 connected to Port1 and Port2
  64          * Do Func Mux setting for 12-pin ULPI PHY mode
  65          */
  66
  67         /* Port1 */
  68         omap_cfg_reg(Y9_3430_USB1HS_PHY_STP);
  69         omap_cfg_reg(Y8_3430_USB1HS_PHY_CLK);
  70         omap_cfg_reg(AA14_3430_USB1HS_PHY_DIR);
  71         omap_cfg_reg(AA11_3430_USB1HS_PHY_NXT);
  72         omap_cfg_reg(W13_3430_USB1HS_PHY_DATA0);
  73         omap_cfg_reg(W12_3430_USB1HS_PHY_DATA1);
  74         omap_cfg_reg(W11_3430_USB1HS_PHY_DATA2);
  75         omap_cfg_reg(Y11_3430_USB1HS_PHY_DATA3);
  76         omap_cfg_reg(W9_3430_USB1HS_PHY_DATA4);
  77         omap_cfg_reg(Y12_3430_USB1HS_PHY_DATA5);
  78         omap_cfg_reg(W8_3430_USB1HS_PHY_DATA6);
  79         omap_cfg_reg(Y13_3430_USB1HS_PHY_DATA7);
  80
  81         /* Port2 */
  82         omap_cfg_reg(AA10_3430_USB2HS_PHY_STP);
  83         omap_cfg_reg(AA8_3430_USB2HS_PHY_CLK);
  84         omap_cfg_reg(AA9_3430_USB2HS_PHY_DIR);
  85         omap_cfg_reg(AB11_3430_USB2HS_PHY_NXT);
  86         omap_cfg_reg(AB10_3430_USB2HS_PHY_DATA0);
  87         omap_cfg_reg(AB9_3430_USB2HS_PHY_DATA1);
  88         omap_cfg_reg(W3_3430_USB2HS_PHY_DATA2);
  89         omap_cfg_reg(T4_3430_USB2HS_PHY_DATA3);
  90         omap_cfg_reg(T3_3430_USB2HS_PHY_DATA4);
  91         omap_cfg_reg(R3_3430_USB2HS_PHY_DATA5);
  92         omap_cfg_reg(R4_3430_USB2HS_PHY_DATA6);
  93         omap_cfg_reg(T2_3430_USB2HS_PHY_DATA7);
  94
  95 #else
  96         /* Set Func mux for :
  97          * TLL mode of operation
  98          * 12-pin ULPI SDR TLL mode for Port1/2/3
  99          */
 100
 101         /* Port1 */
 102         omap_cfg_reg(Y9_3430_USB1HS_TLL_STP);
 103         omap_cfg_reg(Y8_3430_USB1HS_TLL_CLK);
 104         omap_cfg_reg(AA14_3430_USB1HS_TLL_DIR);
 105         omap_cfg_reg(AA11_3430_USB1HS_TLL_NXT);
 106         omap_cfg_reg(W13_3430_USB1HS_TLL_DATA0);
 107         omap_cfg_reg(W12_3430_USB1HS_TLL_DATA1);
 108         omap_cfg_reg(W11_3430_USB1HS_TLL_DATA2);
 109         omap_cfg_reg(Y11_3430_USB1HS_TLL_DATA3);
 110         omap_cfg_reg(W9_3430_USB1HS_TLL_DATA4);
 111         omap_cfg_reg(Y12_3430_USB1HS_TLL_DATA5);
 112         omap_cfg_reg(W8_3430_USB1HS_TLL_DATA6);
 113         omap_cfg_reg(Y13_3430_USB1HS_TLL_DATA7);
 114
 115         /* Port2 */
 116         omap_cfg_reg(AA10_3430_USB2HS_TLL_STP);
 117         omap_cfg_reg(AA8_3430_USB2HS_TLL_CLK);
 118         omap_cfg_reg(AA9_3430_USB2HS_TLL_DIR);
 119         omap_cfg_reg(AB11_3430_USB2HS_TLL_NXT);
 120         omap_cfg_reg(AB10_3430_USB2HS_TLL_DATA0);
 121         omap_cfg_reg(AB9_3430_USB2HS_TLL_DATA1);
 122         omap_cfg_reg(W3_3430_USB2HS_TLL_DATA2);
 123         omap_cfg_reg(T4_3430_USB2HS_TLL_DATA3);
 124         omap_cfg_reg(T3_3430_USB2HS_TLL_DATA4);
 125         omap_cfg_reg(R3_3430_USB2HS_TLL_DATA5);
 126         omap_cfg_reg(R4_3430_USB2HS_TLL_DATA6);
 127         omap_cfg_reg(T2_3430_USB2HS_TLL_DATA7);
 128
 129         /* Port3 */
 130         omap_cfg_reg(AB3_3430_USB3HS_TLL_STP);
 131         omap_cfg_reg(AA6_3430_USB3HS_TLL_CLK);
 132         omap_cfg_reg(AA3_3430_USB3HS_TLL_DIR);
 133         omap_cfg_reg(Y3_3430_USB3HS_TLL_NXT);
 134         omap_cfg_reg(AA5_3430_USB3HS_TLL_DATA0);
 135         omap_cfg_reg(Y4_3430_USB3HS_TLL_DATA1);
 136         omap_cfg_reg(Y5_3430_USB3HS_TLL_DATA2);
 137         omap_cfg_reg(W5_3430_USB3HS_TLL_DATA3);
 138         omap_cfg_reg(AB12_3430_USB3HS_TLL_DATA4);
 139         omap_cfg_reg(AB13_3430_USB3HS_TLL_DATA5);
 140         omap_cfg_reg(AA13_3430_USB3HS_TLL_DATA6);
 141         omap_cfg_reg(AA12_3430_USB3HS_TLL_DATA7);
 142 #endif /* CONFIG_OMAP_EHCI_PHY_MODE */
 143
 144         return;
 145 }
 146
 147 #endif /* EHCI specific data */
 148
 149 void __init usb_ehci_init(void)
 150 {
 151 #if     defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
 152         /* Setup Pin IO MUX for EHCI */
 153         if (cpu_is_omap34xx())
 154                 setup_ehci_io_mux();
 155
 156         if (platform_device_register(&ehci_device) < 0) {
 157                 printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n");
 158                 return;
 159         }
 160 #endif
 161 }
 162