arch/arm/mach-sa1100/yopy.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/yopy.c
   3  */
   4 #include <linux/module.h>
   5 #include <linux/init.h>
   6 #include <linux/kernel.h>
   7 #include <linux/tty.h>
   8
   9 #include <asm/hardware.h>
  10 #include <asm/mach-types.h>
  11 #include <asm/setup.h>
  12
  13 #include <asm/mach/arch.h>
  14 #include <asm/mach/map.h>
  15 #include <asm/mach/serial_sa1100.h>
  16
  17 #include "generic.h"
  18
  19
  20 static spinlock_t egpio_lock = SPIN_LOCK_UNLOCKED;
  21
  22 static unsigned long yopy_egpio =
  23         GPIO_MASK(GPIO_CF_RESET) |
  24         GPIO_MASK(GPIO_CLKDIV_CLR1) | GPIO_MASK(GPIO_CLKDIV_CLR2) |
  25         GPIO_MASK(GPIO_SPEAKER_MUTE) | GPIO_MASK(GPIO_AUDIO_OPAMP_POWER);
  26
  27 int yopy_gpio_test(unsigned int gpio)
  28 {
  29         return ((yopy_egpio & (1 << gpio)) != 0);
  30 }
  31
  32 void yopy_gpio_set(unsigned int gpio, int level)
  33 {
  34         unsigned long flags, mask;
  35
  36         mask = 1 << gpio;
  37
  38         spin_lock_irqsave(&egpio_lock, flags);
  39
  40         if (level)
  41                 yopy_egpio |= mask;
  42         else
  43                 yopy_egpio &= ~mask;
  44         YOPY_EGPIO = yopy_egpio;
  45
  46         spin_unlock_irqrestore(&egpio_lock, flags);
  47 }
  48
  49 EXPORT_SYMBOL(yopy_gpio_test);
  50 EXPORT_SYMBOL(yopy_gpio_set);
  51
  52 static int __init yopy_hw_init(void)
  53 {
  54         if (machine_is_yopy()) {
  55                 YOPY_EGPIO = yopy_egpio;
  56
  57                 /* Enable Output */
  58                 PPDR |= PPC_L_BIAS;
  59                 PSDR &= ~PPC_L_BIAS;
  60                 PPSR |= PPC_L_BIAS;
  61
  62                 YOPY_EGPIO = yopy_egpio;
  63         }
  64
  65         return 0;
  66 }
  67
  68 arch_initcall(yopy_hw_init);
  69
  70
  71 static struct map_desc yopy_io_desc[] __initdata = {
  72  /* virtual     physical    length      type */
  73   { 0xf0000000, 0x48000000, 0x00300000, MT_DEVICE }, /* LCD */
  74   { 0xf1000000, 0x10000000, 0x00100000, MT_DEVICE }  /* EGPIO */
  75 };
  76
  77 static void __init yopy_map_io(void)
  78 {
  79         sa1100_map_io();
  80         iotable_init(yopy_io_desc, ARRAY_SIZE(yopy_io_desc));
  81
  82         sa1100_register_uart(0, 3);
  83
  84         set_GPIO_IRQ_edge(GPIO_UCB1200_IRQ, GPIO_RISING_EDGE);
  85 }
  86
  87
  88 MACHINE_START(YOPY, "Yopy")
  89         MAINTAINER("G.Mate, Inc.")
  90         BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
  91         BOOT_PARAMS(0xc0000100)
  92         MAPIO(yopy_map_io)
  93         INITIRQ(sa1100_init_irq)
  94         INITTIME(sa1100_init_time)
  95 MACHINE_END