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   1 /*
   2  * Renesas Technology Sales RTS7751R2D Support.
   3  *
   4  * Copyright (C) 2002 Atom Create Engineering Co., Ltd.
   5  * Copyright (C) 2004 - 2006 Paul Mundt
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #include <linux/init.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/serial_8250.h>
  14 #include <linux/pm.h>
  15 #include <asm/io.h>
  16 #include <asm/mach/rts7751r2d.h>
  17 #include <asm/voyagergx.h>
  18
  19 static struct plat_serial8250_port uart_platform_data[] = {
  20         {
  21                 .membase        = (void *)VOYAGER_UART_BASE,
  22                 .mapbase        = VOYAGER_UART_BASE,
  23                 .iotype         = UPIO_MEM,
  24                 .irq            = VOYAGER_UART0_IRQ,
  25                 .flags          = UPF_BOOT_AUTOCONF,
  26                 .regshift       = 2,
  27                 .uartclk        = (9600 * 16),
  28         }, {
  29                 .flags          = 0,
  30         },
  31 };
  32
  33 static void __init voyagergx_serial_init(void)
  34 {
  35         unsigned long val;
  36
  37         /*
  38          * GPIO Control
  39          */
  40         val = inl(GPIO_MUX_HIGH);
  41         val |= 0x00001fe0;
  42         outl(val, GPIO_MUX_HIGH);
  43
  44         /*
  45          * Power Mode Gate
  46          */
  47         val = inl(POWER_MODE0_GATE);
  48         val |= (POWER_MODE0_GATE_U0 | POWER_MODE0_GATE_U1);
  49         outl(val, POWER_MODE0_GATE);
  50
  51         val = inl(POWER_MODE1_GATE);
  52         val |= (POWER_MODE1_GATE_U0 | POWER_MODE1_GATE_U1);
  53         outl(val, POWER_MODE1_GATE);
  54 }
  55
  56 static struct platform_device uart_device = {
  57         .name           = "serial8250",
  58         .id             = -1,
  59         .dev            = {
  60                 .platform_data  = uart_platform_data,
  61         },
  62 };
  63
  64 static struct platform_device *rts7751r2d_devices[] __initdata = {
  65         &uart_device,
  66 };
  67
  68 static int __init rts7751r2d_devices_setup(void)
  69 {
  70         return platform_add_devices(rts7751r2d_devices,
  71                                     ARRAY_SIZE(rts7751r2d_devices));
  72 }
  73 __initcall(rts7751r2d_devices_setup);
  74
  75 const char *get_system_type(void)
  76 {
  77         return "RTS7751R2D";
  78 }
  79
  80 static void rts7751r2d_power_off(void)
  81 {
  82         ctrl_outw(0x0001, PA_POWOFF);
  83 }
  84
  85 /*
  86  * Initialize the board
  87  */
  88 void __init platform_setup(void)
  89 {
  90         printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
  91         ctrl_outw(0x0000, PA_OUTPORT);
  92         pm_power_off = rts7751r2d_power_off;
  93
  94         voyagergx_serial_init();
  95
  96 }