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) 2007 Texas Instruments
   8  * Author: Vikram Pandita <vikram.pandita@ti.com>
   9  *
  10  * Generalization by:
  11  * Felipe Balbi <felipe.balbi@nokia.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/types.h>
  19 #include <linux/errno.h>
  20 #include <linux/delay.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/clk.h>
  23 #include <asm/io.h>
  24 #include <asm/arch/mux.h>
  25 #include <linux/usb/musb.h>
  26
  27 #include <asm/arch/hardware.h>
  28 #include <asm/arch/pm.h>
  29 #include <asm/arch/usb.h>
  30
  31 #if     defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
  32 static struct resource ehci_resources[] = {
  33         [0] = {
  34                 .start   = OMAP34XX_HSUSB_HOST_BASE + 0x800,
  35                 .end     = OMAP34XX_HSUSB_HOST_BASE + 0x800 + SZ_1K - 1,
  36                 .flags   = IORESOURCE_MEM,
  37         },
  38         [1] = {         /* general IRQ */
  39                 .start   = INT_34XX_EHCI_IRQ,
  40                 .flags   = IORESOURCE_IRQ,
  41         }
  42 };
  43
  44 static u64 ehci_dmamask = ~(u32)0;
  45 static struct platform_device ehci_device = {
  46         .name           = "ehci-omap",
  47         .id             = 0,
  48         .dev = {
  49                 .dma_mask               = &ehci_dmamask,
  50                 .coherent_dma_mask      = 0xffffffff,
  51                 .platform_data          = NULL,
  52         },
  53         .num_resources  = ARRAY_SIZE(ehci_resources),
  54         .resource       = ehci_resources,
  55 };
  56
  57
  58 /* MUX settings for EHCI pins */
  59 /*
  60  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
  61  */
  62 static void setup_ehci_io_mux(void)
  63 {
  64 #ifdef CONFIG_OMAP_EHCI_PHY_MODE
  65         /* PHY mode of operation for board: 750-2083-001
  66          * ISP1504 connected to Port1 and Port2
  67          * Do Func Mux setting for 12-pin ULPI PHY mode
  68          */
  69
  70         /* Port1 */
  71         omap_cfg_reg(Y9_3430_USB1HS_PHY_STP);
  72         omap_cfg_reg(Y8_3430_USB1HS_PHY_CLK);
  73         omap_cfg_reg(AA14_3430_USB1HS_PHY_DIR);
  74         omap_cfg_reg(AA11_3430_USB1HS_PHY_NXT);
  75         omap_cfg_reg(W13_3430_USB1HS_PHY_DATA0);
  76         omap_cfg_reg(W12_3430_USB1HS_PHY_DATA1);
  77         omap_cfg_reg(W11_3430_USB1HS_PHY_DATA2);
  78         omap_cfg_reg(Y11_3430_USB1HS_PHY_DATA3);
  79         omap_cfg_reg(W9_3430_USB1HS_PHY_DATA4);
  80         omap_cfg_reg(Y12_3430_USB1HS_PHY_DATA5);
  81         omap_cfg_reg(W8_3430_USB1HS_PHY_DATA6);
  82         omap_cfg_reg(Y13_3430_USB1HS_PHY_DATA7);
  83
  84         /* Port2 */
  85         omap_cfg_reg(AA10_3430_USB2HS_PHY_STP);
  86         omap_cfg_reg(AA8_3430_USB2HS_PHY_CLK);
  87         omap_cfg_reg(AA9_3430_USB2HS_PHY_DIR);
  88         omap_cfg_reg(AB11_3430_USB2HS_PHY_NXT);
  89         omap_cfg_reg(AB10_3430_USB2HS_PHY_DATA0);
  90         omap_cfg_reg(AB9_3430_USB2HS_PHY_DATA1);
  91         omap_cfg_reg(W3_3430_USB2HS_PHY_DATA2);
  92         omap_cfg_reg(T4_3430_USB2HS_PHY_DATA3);
  93         omap_cfg_reg(T3_3430_USB2HS_PHY_DATA4);
  94         omap_cfg_reg(R3_3430_USB2HS_PHY_DATA5);
  95         omap_cfg_reg(R4_3430_USB2HS_PHY_DATA6);
  96         omap_cfg_reg(T2_3430_USB2HS_PHY_DATA7);
  97
  98 #else
  99         /* Set Func mux for :
 100          * TLL mode of operation
 101          * 12-pin ULPI SDR TLL mode for Port1/2/3
 102          */
 103
 104         /* Port1 */
 105         omap_cfg_reg(Y9_3430_USB1HS_TLL_STP);
 106         omap_cfg_reg(Y8_3430_USB1HS_TLL_CLK);
 107         omap_cfg_reg(AA14_3430_USB1HS_TLL_DIR);
 108         omap_cfg_reg(AA11_3430_USB1HS_TLL_NXT);
 109         omap_cfg_reg(W13_3430_USB1HS_TLL_DATA0);
 110         omap_cfg_reg(W12_3430_USB1HS_TLL_DATA1);
 111         omap_cfg_reg(W11_3430_USB1HS_TLL_DATA2);
 112         omap_cfg_reg(Y11_3430_USB1HS_TLL_DATA3);
 113         omap_cfg_reg(W9_3430_USB1HS_TLL_DATA4);
 114         omap_cfg_reg(Y12_3430_USB1HS_TLL_DATA5);
 115         omap_cfg_reg(W8_3430_USB1HS_TLL_DATA6);
 116         omap_cfg_reg(Y13_3430_USB1HS_TLL_DATA7);
 117
 118         /* Port2 */
 119         omap_cfg_reg(AA10_3430_USB2HS_TLL_STP);
 120         omap_cfg_reg(AA8_3430_USB2HS_TLL_CLK);
 121         omap_cfg_reg(AA9_3430_USB2HS_TLL_DIR);
 122         omap_cfg_reg(AB11_3430_USB2HS_TLL_NXT);
 123         omap_cfg_reg(AB10_3430_USB2HS_TLL_DATA0);
 124         omap_cfg_reg(AB9_3430_USB2HS_TLL_DATA1);
 125         omap_cfg_reg(W3_3430_USB2HS_TLL_DATA2);
 126         omap_cfg_reg(T4_3430_USB2HS_TLL_DATA3);
 127         omap_cfg_reg(T3_3430_USB2HS_TLL_DATA4);
 128         omap_cfg_reg(R3_3430_USB2HS_TLL_DATA5);
 129         omap_cfg_reg(R4_3430_USB2HS_TLL_DATA6);
 130         omap_cfg_reg(T2_3430_USB2HS_TLL_DATA7);
 131
 132         /* Port3 */
 133         omap_cfg_reg(AB3_3430_USB3HS_TLL_STP);
 134         omap_cfg_reg(AA6_3430_USB3HS_TLL_CLK);
 135         omap_cfg_reg(AA3_3430_USB3HS_TLL_DIR);
 136         omap_cfg_reg(Y3_3430_USB3HS_TLL_NXT);
 137         omap_cfg_reg(AA5_3430_USB3HS_TLL_DATA0);
 138         omap_cfg_reg(Y4_3430_USB3HS_TLL_DATA1);
 139         omap_cfg_reg(Y5_3430_USB3HS_TLL_DATA2);
 140         omap_cfg_reg(W5_3430_USB3HS_TLL_DATA3);
 141         omap_cfg_reg(AB12_3430_USB3HS_TLL_DATA4);
 142         omap_cfg_reg(AB13_3430_USB3HS_TLL_DATA5);
 143         omap_cfg_reg(AA13_3430_USB3HS_TLL_DATA6);
 144         omap_cfg_reg(AA12_3430_USB3HS_TLL_DATA7);
 145 #endif /* CONFIG_OMAP_EHCI_PHY_MODE */
 146
 147         return;
 148 }
 149
 150 #endif /* EHCI specific data */
 151
 152 void __init usb_ehci_init(void)
 153 {
 154 #if     defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
 155         /* Setup Pin IO MUX for EHCI */
 156         if (cpu_is_omap34xx())
 157                 setup_ehci_io_mux();
 158
 159         if (platform_device_register(&ehci_device) < 0) {
 160                 printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n");
 161                 return;
 162         }
 163 #endif
 164 }
 165