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