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Linux/arch/mips/pmcs-msp71xx/msp_eth.c

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  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);
188 

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