arch/mips/pmcs-msp71xx/msp_eth.c

   1 /*
   2  * The setup file for ethernet related hardware on PMC-Sierra MSP processors.
   3  *
   4  * Copyright 2010 PMC-Sierra, Inc.
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation;  either version 2 of the  License, or (at your
   9  *  option) any later version.
  10  *
  11  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  12  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  13  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  14  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  15  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  16  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  17  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  18  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  19  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  20  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  21  *
  22  *  You should have received a copy of the  GNU General Public License along
  23  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  24  *  675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #include <linux/init.h>
  28 #include <linux/kernel.h>
  29 #include <linux/ioport.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/delay.h>
  32 #include <msp_regs.h>
  33 #include <msp_int.h>
  34 #include <msp_gpio_macros.h>
  35
  36
  37 #define MSP_ETHERNET_GPIO0      14
  38 #define MSP_ETHERNET_GPIO1      15
  39 #define MSP_ETHERNET_GPIO2      16
  40
  41 #ifdef CONFIG_MSP_HAS_TSMAC
  42 #define MSP_TSMAC_SIZE  0x10020
  43 #define MSP_TSMAC_ID    "pmc_tsmac"
  44
  45 static struct resource msp_tsmac0_resources[] = {
  46         [0] = {
  47                 .start  = MSP_MAC0_BASE,
  48                 .end    = MSP_MAC0_BASE + MSP_TSMAC_SIZE - 1,
  49                 .flags  = IORESOURCE_MEM,
  50         },
  51         [1] = {
  52                 .start  = MSP_INT_MAC0,
  53                 .end    = MSP_INT_MAC0,
  54                 .flags  = IORESOURCE_IRQ,
  55         },
  56 };
  57
  58 static struct resource msp_tsmac1_resources[] = {
  59         [0] = {
  60                 .start  = MSP_MAC1_BASE,
  61                 .end    = MSP_MAC1_BASE + MSP_TSMAC_SIZE - 1,
  62                 .flags  = IORESOURCE_MEM,
  63         },
  64         [1] = {
  65                 .start  = MSP_INT_MAC1,
  66                 .end    = MSP_INT_MAC1,
  67                 .flags  = IORESOURCE_IRQ,
  68         },
  69 };
  70 static struct resource msp_tsmac2_resources[] = {
  71         [0] = {
  72                 .start  = MSP_MAC2_BASE,
  73                 .end    = MSP_MAC2_BASE + MSP_TSMAC_SIZE - 1,
  74                 .flags  = IORESOURCE_MEM,
  75         },
  76         [1] = {
  77                 .start  = MSP_INT_SAR,
  78                 .end    = MSP_INT_SAR,
  79                 .flags  = IORESOURCE_IRQ,
  80         },
  81 };
  82
  83
  84 static struct platform_device tsmac_device[] = {
  85         [0] = {
  86                 .name   = MSP_TSMAC_ID,
  87                 .id     = 0,
  88                 .num_resources = ARRAY_SIZE(msp_tsmac0_resources),
  89                 .resource = msp_tsmac0_resources,
  90         },
  91         [1] = {
  92                 .name   = MSP_TSMAC_ID,
  93                 .id     = 1,
  94                 .num_resources = ARRAY_SIZE(msp_tsmac1_resources),
  95                 .resource = msp_tsmac1_resources,
  96         },
  97         [2] = {
  98                 .name   = MSP_TSMAC_ID,
  99                 .id     = 2,
 100                 .num_resources = ARRAY_SIZE(msp_tsmac2_resources),
 101                 .resource = msp_tsmac2_resources,
 102         },
 103 };
 104 #define msp_eth_devs    tsmac_device
 105
 106 #else
 107 /* If it is not TSMAC assume MSP_ETH (100Mbps) */
 108 #define MSP_ETH_ID      "pmc_mspeth"
 109 #define MSP_ETH_SIZE    0xE0
 110 static struct resource msp_eth0_resources[] = {
 111         [0] = {
 112                 .start  = MSP_MAC0_BASE,
 113                 .end    = MSP_MAC0_BASE + MSP_ETH_SIZE - 1,
 114                 .flags  = IORESOURCE_MEM,
 115         },
 116         [1] = {
 117                 .start  = MSP_INT_MAC0,
 118                 .end    = MSP_INT_MAC0,
 119                 .flags  = IORESOURCE_IRQ,
 120         },
 121 };
 122
 123 static struct resource msp_eth1_resources[] = {
 124         [0] = {
 125                 .start  = MSP_MAC1_BASE,
 126                 .end    = MSP_MAC1_BASE + MSP_ETH_SIZE - 1,
 127                 .flags  = IORESOURCE_MEM,
 128         },
 129         [1] = {
 130                 .start  = MSP_INT_MAC1,
 131                 .end    = MSP_INT_MAC1,
 132                 .flags  = IORESOURCE_IRQ,
 133         },
 134 };
 135
 136
 137
 138 static struct platform_device mspeth_device[] = {
 139         [0] = {
 140                 .name   = MSP_ETH_ID,
 141                 .id     = 0,
 142                 .num_resources = ARRAY_SIZE(msp_eth0_resources),
 143                 .resource = msp_eth0_resources,
 144         },
 145         [1] = {
 146                 .name   = MSP_ETH_ID,
 147                 .id     = 1,
 148                 .num_resources = ARRAY_SIZE(msp_eth1_resources),
 149                 .resource = msp_eth1_resources,
 150         },
 151
 152 };
 153 #define msp_eth_devs    mspeth_device
 154
 155 #endif
 156 int __init msp_eth_setup(void)
 157 {
 158         int i, ret = 0;
 159
 160         /* Configure the GPIO and take the ethernet PHY out of reset */
 161         msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO0);
 162         msp_gpio_pin_hi(MSP_ETHERNET_GPIO0);
 163
 164 #ifdef CONFIG_MSP_HAS_TSMAC
 165         /* 3 phys on boards with TSMAC */
 166         msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO1);
 167         msp_gpio_pin_hi(MSP_ETHERNET_GPIO1);
 168
 169         msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO2);
 170         msp_gpio_pin_hi(MSP_ETHERNET_GPIO2);
 171 #endif
 172         for (i = 0; i < ARRAY_SIZE(msp_eth_devs); i++) {
 173                 ret = platform_device_register(&msp_eth_devs[i]);
 174                 printk(KERN_INFO "device: %d, return value = %d\n", i, ret);
 175                 if (ret) {
 176                         platform_device_unregister(&msp_eth_devs[i]);
 177                         break;
 178                 }
 179         }
 180
 181         if (ret)
 182                 printk(KERN_WARNING "Could not initialize "
 183                                                 "MSPETH device structures.\n");
 184
 185         return ret;
 186 }
 187 subsys_initcall(msp_eth_setup);