arch/arm/mach-vt8500/wm8505_7in.c

   1 /*
   2  *  arch/arm/mach-vt8500/wm8505_7in.c
   3  *
   4  *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/io.h>
  22 #include <linux/pm.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <mach/restart.h>
  27
  28 #include "devices.h"
  29
  30 static void __iomem *pmc_hiber;
  31
  32 static struct platform_device *devices[] __initdata = {
  33         &vt8500_device_uart0,
  34         &vt8500_device_ehci,
  35         &vt8500_device_wm8505_fb,
  36         &vt8500_device_ge_rops,
  37         &vt8500_device_pwm,
  38         &vt8500_device_pwmbl,
  39         &vt8500_device_rtc,
  40 };
  41
  42 static void vt8500_power_off(void)
  43 {
  44         local_irq_disable();
  45         writew(5, pmc_hiber);
  46         asm("mcr%? p15, 0, %0, c7, c0, 4" : : "r" (0));
  47 }
  48
  49 void __init wm8505_7in_init(void)
  50 {
  51 #ifdef CONFIG_FB_WM8505
  52         void __iomem *gpio_mux_reg = ioremap(wmt_gpio_base + 0x200, 4);
  53         if (gpio_mux_reg) {
  54                 writel(readl(gpio_mux_reg) | 0x80000000, gpio_mux_reg);
  55                 iounmap(gpio_mux_reg);
  56         } else {
  57                 printk(KERN_ERR "Could not remap the GPIO mux register, display may not work properly!\n");
  58         }
  59 #endif
  60         pmc_hiber = ioremap(wmt_pmc_base + 0x12, 2);
  61         if (pmc_hiber)
  62                 pm_power_off = &vt8500_power_off;
  63         else
  64                 printk(KERN_ERR "PMC Hibernation register could not be remapped, not enabling power off!\n");
  65         wmt_setup_restart();
  66         wm8505_set_resources();
  67         platform_add_devices(devices, ARRAY_SIZE(devices));
  68         vt8500_gpio_init();
  69 }
  70
  71 MACHINE_START(WM8505_7IN_NETBOOK, "WM8505 7-inch generic netbook")
  72         .atag_offset    = 0x100,
  73         .restart        = wmt_restart,
  74         .reserve        = wm8505_reserve_mem,
  75         .map_io         = wm8505_map_io,
  76         .init_irq       = wm8505_init_irq,
  77         .timer          = &vt8500_timer,
  78         .init_machine   = wm8505_7in_init,
  79 MACHINE_END