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 <plat/mux.h>
  25
  26 #include <mach/hardware.h>
  27 #include <mach/irqs.h>
  28 #include <plat/usb.h>
  29
  30 #include "mux.h"
  31
  32 #if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
  33
  34 static struct resource ehci_resources[] = {
  35         {
  36                 .start  = OMAP34XX_EHCI_BASE,
  37                 .end    = OMAP34XX_EHCI_BASE + SZ_1K - 1,
  38                 .flags  = IORESOURCE_MEM,
  39         },
  40         {
  41                 .start  = OMAP34XX_UHH_CONFIG_BASE,
  42                 .end    = OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1,
  43                 .flags  = IORESOURCE_MEM,
  44         },
  45         {
  46                 .start  = OMAP34XX_USBTLL_BASE,
  47                 .end    = OMAP34XX_USBTLL_BASE + SZ_4K - 1,
  48                 .flags  = IORESOURCE_MEM,
  49         },
  50         {         /* general IRQ */
  51                 .start   = INT_34XX_EHCI_IRQ,
  52                 .flags   = IORESOURCE_IRQ,
  53         }
  54 };
  55
  56 static u64 ehci_dmamask = ~(u32)0;
  57 static struct platform_device ehci_device = {
  58         .name           = "ehci-omap",
  59         .id             = 0,
  60         .dev = {
  61                 .dma_mask               = &ehci_dmamask,
  62                 .coherent_dma_mask      = 0xffffffff,
  63                 .platform_data          = NULL,
  64         },
  65         .num_resources  = ARRAY_SIZE(ehci_resources),
  66         .resource       = ehci_resources,
  67 };
  68
  69 /* MUX settings for EHCI pins */
  70 /*
  71  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
  72  */
  73 static void setup_ehci_io_mux(enum ehci_hcd_omap_mode *port_mode)
  74 {
  75         switch (port_mode[0]) {
  76         case EHCI_HCD_OMAP_MODE_PHY:
  77                 omap_mux_init_signal("hsusb1_stp", OMAP_PIN_OUTPUT);
  78                 omap_mux_init_signal("hsusb1_clk", OMAP_PIN_OUTPUT);
  79                 omap_mux_init_signal("hsusb1_dir", OMAP_PIN_INPUT_PULLDOWN);
  80                 omap_mux_init_signal("hsusb1_nxt", OMAP_PIN_INPUT_PULLDOWN);
  81                 omap_mux_init_signal("hsusb1_data0", OMAP_PIN_INPUT_PULLDOWN);
  82                 omap_mux_init_signal("hsusb1_data1", OMAP_PIN_INPUT_PULLDOWN);
  83                 omap_mux_init_signal("hsusb1_data2", OMAP_PIN_INPUT_PULLDOWN);
  84                 omap_mux_init_signal("hsusb1_data3", OMAP_PIN_INPUT_PULLDOWN);
  85                 omap_mux_init_signal("hsusb1_data4", OMAP_PIN_INPUT_PULLDOWN);
  86                 omap_mux_init_signal("hsusb1_data5", OMAP_PIN_INPUT_PULLDOWN);
  87                 omap_mux_init_signal("hsusb1_data6", OMAP_PIN_INPUT_PULLDOWN);
  88                 omap_mux_init_signal("hsusb1_data7", OMAP_PIN_INPUT_PULLDOWN);
  89                 break;
  90         case EHCI_HCD_OMAP_MODE_TLL:
  91                 omap_mux_init_signal("hsusb1_tll_stp",
  92                         OMAP_PIN_INPUT_PULLUP);
  93                 omap_mux_init_signal("hsusb1_tll_clk",
  94                         OMAP_PIN_INPUT_PULLDOWN);
  95                 omap_mux_init_signal("hsusb1_tll_dir",
  96                         OMAP_PIN_INPUT_PULLDOWN);
  97                 omap_mux_init_signal("hsusb1_tll_nxt",
  98                         OMAP_PIN_INPUT_PULLDOWN);
  99                 omap_mux_init_signal("hsusb1_tll_data0",
 100                         OMAP_PIN_INPUT_PULLDOWN);
 101                 omap_mux_init_signal("hsusb1_tll_data1",
 102                         OMAP_PIN_INPUT_PULLDOWN);
 103                 omap_mux_init_signal("hsusb1_tll_data2",
 104                         OMAP_PIN_INPUT_PULLDOWN);
 105                 omap_mux_init_signal("hsusb1_tll_data3",
 106                         OMAP_PIN_INPUT_PULLDOWN);
 107                 omap_mux_init_signal("hsusb1_tll_data4",
 108                         OMAP_PIN_INPUT_PULLDOWN);
 109                 omap_mux_init_signal("hsusb1_tll_data5",
 110                         OMAP_PIN_INPUT_PULLDOWN);
 111                 omap_mux_init_signal("hsusb1_tll_data6",
 112                         OMAP_PIN_INPUT_PULLDOWN);
 113                 omap_mux_init_signal("hsusb1_tll_data7",
 114                         OMAP_PIN_INPUT_PULLDOWN);
 115                 break;
 116         case EHCI_HCD_OMAP_MODE_UNKNOWN:
 117                 /* FALLTHROUGH */
 118         default:
 119                 break;
 120         }
 121
 122         switch (port_mode[1]) {
 123         case EHCI_HCD_OMAP_MODE_PHY:
 124                 omap_mux_init_signal("hsusb2_stp", OMAP_PIN_OUTPUT);
 125                 omap_mux_init_signal("hsusb2_clk", OMAP_PIN_OUTPUT);
 126                 omap_mux_init_signal("hsusb2_dir", OMAP_PIN_INPUT_PULLDOWN);
 127                 omap_mux_init_signal("hsusb2_nxt", OMAP_PIN_INPUT_PULLDOWN);
 128                 omap_mux_init_signal("hsusb2_data0",
 129                         OMAP_PIN_INPUT_PULLDOWN);
 130                 omap_mux_init_signal("hsusb2_data1",
 131                         OMAP_PIN_INPUT_PULLDOWN);
 132                 omap_mux_init_signal("hsusb2_data2",
 133                         OMAP_PIN_INPUT_PULLDOWN);
 134                 omap_mux_init_signal("hsusb2_data3",
 135                         OMAP_PIN_INPUT_PULLDOWN);
 136                 omap_mux_init_signal("hsusb2_data4",
 137                         OMAP_PIN_INPUT_PULLDOWN);
 138                 omap_mux_init_signal("hsusb2_data5",
 139                         OMAP_PIN_INPUT_PULLDOWN);
 140                 omap_mux_init_signal("hsusb2_data6",
 141                         OMAP_PIN_INPUT_PULLDOWN);
 142                 omap_mux_init_signal("hsusb2_data7",
 143                         OMAP_PIN_INPUT_PULLDOWN);
 144                 break;
 145         case EHCI_HCD_OMAP_MODE_TLL:
 146                 omap_mux_init_signal("hsusb2_tll_stp",
 147                         OMAP_PIN_INPUT_PULLUP);
 148                 omap_mux_init_signal("hsusb2_tll_clk",
 149                         OMAP_PIN_INPUT_PULLDOWN);
 150                 omap_mux_init_signal("hsusb2_tll_dir",
 151                         OMAP_PIN_INPUT_PULLDOWN);
 152                 omap_mux_init_signal("hsusb2_tll_nxt",
 153                         OMAP_PIN_INPUT_PULLDOWN);
 154                 omap_mux_init_signal("hsusb2_tll_data0",
 155                         OMAP_PIN_INPUT_PULLDOWN);
 156                 omap_mux_init_signal("hsusb2_tll_data1",
 157                         OMAP_PIN_INPUT_PULLDOWN);
 158                 omap_mux_init_signal("hsusb2_tll_data2",
 159                         OMAP_PIN_INPUT_PULLDOWN);
 160                 omap_mux_init_signal("hsusb2_tll_data3",
 161                         OMAP_PIN_INPUT_PULLDOWN);
 162                 omap_mux_init_signal("hsusb2_tll_data4",
 163                         OMAP_PIN_INPUT_PULLDOWN);
 164                 omap_mux_init_signal("hsusb2_tll_data5",
 165                         OMAP_PIN_INPUT_PULLDOWN);
 166                 omap_mux_init_signal("hsusb2_tll_data6",
 167                         OMAP_PIN_INPUT_PULLDOWN);
 168                 omap_mux_init_signal("hsusb2_tll_data7",
 169                         OMAP_PIN_INPUT_PULLDOWN);
 170                 break;
 171         case EHCI_HCD_OMAP_MODE_UNKNOWN:
 172                 /* FALLTHROUGH */
 173         default:
 174                 break;
 175         }
 176
 177         switch (port_mode[2]) {
 178         case EHCI_HCD_OMAP_MODE_PHY:
 179                 printk(KERN_WARNING "Port3 can't be used in PHY mode\n");
 180                 break;
 181         case EHCI_HCD_OMAP_MODE_TLL:
 182                 omap_mux_init_signal("hsusb3_tll_stp",
 183                         OMAP_PIN_INPUT_PULLUP);
 184                 omap_mux_init_signal("hsusb3_tll_clk",
 185                         OMAP_PIN_INPUT_PULLDOWN);
 186                 omap_mux_init_signal("hsusb3_tll_dir",
 187                         OMAP_PIN_INPUT_PULLDOWN);
 188                 omap_mux_init_signal("hsusb3_tll_nxt",
 189                         OMAP_PIN_INPUT_PULLDOWN);
 190                 omap_mux_init_signal("hsusb3_tll_data0",
 191                         OMAP_PIN_INPUT_PULLDOWN);
 192                 omap_mux_init_signal("hsusb3_tll_data1",
 193                         OMAP_PIN_INPUT_PULLDOWN);
 194                 omap_mux_init_signal("hsusb3_tll_data2",
 195                         OMAP_PIN_INPUT_PULLDOWN);
 196                 omap_mux_init_signal("hsusb3_tll_data3",
 197                         OMAP_PIN_INPUT_PULLDOWN);
 198                 omap_mux_init_signal("hsusb3_tll_data4",
 199                         OMAP_PIN_INPUT_PULLDOWN);
 200                 omap_mux_init_signal("hsusb3_tll_data5",
 201                         OMAP_PIN_INPUT_PULLDOWN);
 202                 omap_mux_init_signal("hsusb3_tll_data6",
 203                         OMAP_PIN_INPUT_PULLDOWN);
 204                 omap_mux_init_signal("hsusb3_tll_data7",
 205                         OMAP_PIN_INPUT_PULLDOWN);
 206                 break;
 207         case EHCI_HCD_OMAP_MODE_UNKNOWN:
 208                 /* FALLTHROUGH */
 209         default:
 210                 break;
 211         }
 212
 213         return;
 214 }
 215
 216 void __init usb_ehci_init(struct ehci_hcd_omap_platform_data *pdata)
 217 {
 218         platform_device_add_data(&ehci_device, pdata, sizeof(*pdata));
 219
 220         /* Setup Pin IO MUX for EHCI */
 221         if (cpu_is_omap34xx())
 222                 setup_ehci_io_mux(pdata->port_mode);
 223
 224         if (platform_device_register(&ehci_device) < 0) {
 225                 printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n");
 226                 return;
 227         }
 228 }
 229
 230 #else
 231
 232 void __init usb_ehci_init(struct ehci_hcd_omap_platform_data *pdata)
 233
 234 {
 235 }
 236
 237 #endif /* CONFIG_USB_EHCI_HCD */
 238