arch/arm/mach-shmobile/board-bockw.c

   1 /*
   2  * Bock-W board support
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/platform_device.h>
  22 #include <linux/smsc911x.h>
  23 #include <mach/common.h>
  24 #include <mach/irqs.h>
  25 #include <mach/r8a7778.h>
  26 #include <asm/mach/arch.h>
  27
  28 static struct smsc911x_platform_config smsc911x_data = {
  29         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  30         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  31         .flags          = SMSC911X_USE_32BIT,
  32         .phy_interface  = PHY_INTERFACE_MODE_MII,
  33 };
  34
  35 static struct resource smsc911x_resources[] = {
  36         DEFINE_RES_MEM(0x18300000, 0x1000),
  37         DEFINE_RES_IRQ(irq_pin(0)), /* IRQ 0 */
  38 };
  39
  40 #define IRQ0MR  0x30
  41 static void __init bockw_init(void)
  42 {
  43         void __iomem *fpga;
  44
  45         r8a7778_clock_init();
  46         r8a7778_init_irq_extpin(1);
  47         r8a7778_add_standard_devices();
  48
  49         fpga = ioremap_nocache(0x18200000, SZ_1M);
  50         if (fpga) {
  51                 /*
  52                  * CAUTION
  53                  *
  54                  * IRQ0/1 is cascaded interrupt from FPGA.
  55                  * it should be cared in the future
  56                  * Now, it is assuming IRQ0 was used only from SMSC.
  57                  */
  58                 u16 val = ioread16(fpga + IRQ0MR);
  59                 val &= ~(1 << 4); /* enable SMSC911x */
  60                 iowrite16(val, fpga + IRQ0MR);
  61                 iounmap(fpga);
  62
  63                 platform_device_register_resndata(
  64                         &platform_bus, "smsc911x", -1,
  65                         smsc911x_resources, ARRAY_SIZE(smsc911x_resources),
  66                         &smsc911x_data, sizeof(smsc911x_data));
  67         }
  68 }
  69
  70 static const char *bockw_boards_compat_dt[] __initdata = {
  71         "renesas,bockw",
  72         NULL,
  73 };
  74
  75 DT_MACHINE_START(BOCKW_DT, "bockw")
  76         .init_early     = r8a7778_init_delay,
  77         .init_irq       = r8a7778_init_irq_dt,
  78         .init_machine   = bockw_init,
  79         .init_time      = shmobile_timer_init,
  80         .dt_compat      = bockw_boards_compat_dt,
  81 MACHINE_END