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 <mach/mux.h>
  25 #include <linux/usb/musb.h>
  26
  27 #include <mach/hardware.h>
  28 #include <mach/irqs.h>
  29 #include <mach/pm.h>
  30 #include <mach/usb.h>
  31
  32 #if     defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
  33 static struct resource ehci_resources[] = {
  34         [0] = {
  35                 .start   = OMAP34XX_HSUSB_HOST_BASE + 0x800,
  36                 .end     = OMAP34XX_HSUSB_HOST_BASE + 0x800 + SZ_1K - 1,
  37                 .flags   = IORESOURCE_MEM,
  38         },
  39         [1] = {         /* general IRQ */
  40                 .start   = INT_34XX_EHCI_IRQ,
  41                 .flags   = IORESOURCE_IRQ,
  42         }
  43 };
  44
  45 static u64 ehci_dmamask = ~(u32)0;
  46 static struct platform_device ehci_device = {
  47         .name           = "ehci-omap",
  48         .id             = 0,
  49         .dev = {
  50                 .dma_mask               = &ehci_dmamask,
  51                 .coherent_dma_mask      = 0xffffffff,
  52                 .platform_data          = NULL,
  53         },
  54         .num_resources  = ARRAY_SIZE(ehci_resources),
  55         .resource       = ehci_resources,
  56 };
  57
  58
  59 /* MUX settings for EHCI pins */
  60 /*
  61  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
  62  */
  63 static void setup_ehci_io_mux(void)
  64 {
  65 #ifdef CONFIG_OMAP_EHCI_PHY_MODE
  66         /* PHY mode of operation for board: 750-2083-001
  67          * ISP1504 connected to Port1 and Port2
  68          * Do Func Mux setting for 12-pin ULPI PHY mode
  69          */
  70
  71         /* Port1 */
  72         omap_cfg_reg(Y9_3430_USB1HS_PHY_STP);
  73         omap_cfg_reg(Y8_3430_USB1HS_PHY_CLK);
  74         omap_cfg_reg(AA14_3430_USB1HS_PHY_DIR);
  75         omap_cfg_reg(AA11_3430_USB1HS_PHY_NXT);
  76         omap_cfg_reg(W13_3430_USB1HS_PHY_DATA0);
  77         omap_cfg_reg(W12_3430_USB1HS_PHY_DATA1);
  78         omap_cfg_reg(W11_3430_USB1HS_PHY_DATA2);
  79         omap_cfg_reg(Y11_3430_USB1HS_PHY_DATA3);
  80         omap_cfg_reg(W9_3430_USB1HS_PHY_DATA4);
  81         omap_cfg_reg(Y12_3430_USB1HS_PHY_DATA5);
  82         omap_cfg_reg(W8_3430_USB1HS_PHY_DATA6);
  83         omap_cfg_reg(Y13_3430_USB1HS_PHY_DATA7);
  84
  85         /* Port2 */
  86         omap_cfg_reg(AA10_3430_USB2HS_PHY_STP);
  87         omap_cfg_reg(AA8_3430_USB2HS_PHY_CLK);
  88         omap_cfg_reg(AA9_3430_USB2HS_PHY_DIR);
  89         omap_cfg_reg(AB11_3430_USB2HS_PHY_NXT);
  90         omap_cfg_reg(AB10_3430_USB2HS_PHY_DATA0);
  91         omap_cfg_reg(AB9_3430_USB2HS_PHY_DATA1);
  92         omap_cfg_reg(W3_3430_USB2HS_PHY_DATA2);
  93         omap_cfg_reg(T4_3430_USB2HS_PHY_DATA3);
  94         omap_cfg_reg(T3_3430_USB2HS_PHY_DATA4);
  95         omap_cfg_reg(R3_3430_USB2HS_PHY_DATA5);
  96         omap_cfg_reg(R4_3430_USB2HS_PHY_DATA6);
  97         omap_cfg_reg(T2_3430_USB2HS_PHY_DATA7);
  98
  99 #else
 100         /* Set Func mux for :
 101          * TLL mode of operation
 102          * 12-pin ULPI SDR TLL mode for Port1/2/3
 103          */
 104
 105         /* Port1 */
 106         omap_cfg_reg(Y9_3430_USB1HS_TLL_STP);
 107         omap_cfg_reg(Y8_3430_USB1HS_TLL_CLK);
 108         omap_cfg_reg(AA14_3430_USB1HS_TLL_DIR);
 109         omap_cfg_reg(AA11_3430_USB1HS_TLL_NXT);
 110         omap_cfg_reg(W13_3430_USB1HS_TLL_DATA0);
 111         omap_cfg_reg(W12_3430_USB1HS_TLL_DATA1);
 112         omap_cfg_reg(W11_3430_USB1HS_TLL_DATA2);
 113         omap_cfg_reg(Y11_3430_USB1HS_TLL_DATA3);
 114         omap_cfg_reg(W9_3430_USB1HS_TLL_DATA4);
 115         omap_cfg_reg(Y12_3430_USB1HS_TLL_DATA5);
 116         omap_cfg_reg(W8_3430_USB1HS_TLL_DATA6);
 117         omap_cfg_reg(Y13_3430_USB1HS_TLL_DATA7);
 118
 119         /* Port2 */
 120         omap_cfg_reg(AA10_3430_USB2HS_TLL_STP);
 121         omap_cfg_reg(AA8_3430_USB2HS_TLL_CLK);
 122         omap_cfg_reg(AA9_3430_USB2HS_TLL_DIR);
 123         omap_cfg_reg(AB11_3430_USB2HS_TLL_NXT);
 124         omap_cfg_reg(AB10_3430_USB2HS_TLL_DATA0);
 125         omap_cfg_reg(AB9_3430_USB2HS_TLL_DATA1);
 126         omap_cfg_reg(W3_3430_USB2HS_TLL_DATA2);
 127         omap_cfg_reg(T4_3430_USB2HS_TLL_DATA3);
 128         omap_cfg_reg(T3_3430_USB2HS_TLL_DATA4);
 129         omap_cfg_reg(R3_3430_USB2HS_TLL_DATA5);
 130         omap_cfg_reg(R4_3430_USB2HS_TLL_DATA6);
 131         omap_cfg_reg(T2_3430_USB2HS_TLL_DATA7);
 132
 133         /* Port3 */
 134         omap_cfg_reg(AB3_3430_USB3HS_TLL_STP);
 135         omap_cfg_reg(AA6_3430_USB3HS_TLL_CLK);
 136         omap_cfg_reg(AA3_3430_USB3HS_TLL_DIR);
 137         omap_cfg_reg(Y3_3430_USB3HS_TLL_NXT);
 138         omap_cfg_reg(AA5_3430_USB3HS_TLL_DATA0);
 139         omap_cfg_reg(Y4_3430_USB3HS_TLL_DATA1);
 140         omap_cfg_reg(Y5_3430_USB3HS_TLL_DATA2);
 141         omap_cfg_reg(W5_3430_USB3HS_TLL_DATA3);
 142         omap_cfg_reg(AB12_3430_USB3HS_TLL_DATA4);
 143         omap_cfg_reg(AB13_3430_USB3HS_TLL_DATA5);
 144         omap_cfg_reg(AA13_3430_USB3HS_TLL_DATA6);
 145         omap_cfg_reg(AA12_3430_USB3HS_TLL_DATA7);
 146 #endif /* CONFIG_OMAP_EHCI_PHY_MODE */
 147
 148         return;
 149 }
 150
 151 #endif /* EHCI specific data */
 152
 153 void __init usb_ehci_init(void)
 154 {
 155 #if     defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
 156         /* Setup Pin IO MUX for EHCI */
 157         if (cpu_is_omap34xx())
 158                 setup_ehci_io_mux();
 159
 160         if (platform_device_register(&ehci_device) < 0) {
 161                 printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n");
 162                 return;
 163         }
 164 #endif
 165 }
 166