arch/arm/mach-spear6xx/spear6xx.c

   1 /*
   2  * arch/arm/mach-spear6xx/spear6xx.c
   3  *
   4  * SPEAr6XX machines common source file
   5  *
   6  * Copyright (C) 2009 ST Microelectronics
   7  * Rajeev Kumar<rajeev-dlh.kumar@st.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2. This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #include <linux/types.h>
  15 #include <linux/amba/pl061.h>
  16 #include <linux/types.h>
  17 #include <linux/ptrace.h>
  18 #include <linux/io.h>
  19 #include <asm/hardware/vic.h>
  20 #include <asm/irq.h>
  21 #include <asm/mach/arch.h>
  22 #include <mach/irqs.h>
  23 #include <mach/generic.h>
  24 #include <mach/spear.h>
  25
  26 /* Add spear6xx machines common devices here */
  27 /* uart device registeration */
  28 struct amba_device uart_device[] = {
  29         {
  30                 .dev = {
  31                         .init_name = "uart0",
  32                 },
  33                 .res = {
  34                         .start = SPEAR6XX_ICM1_UART0_BASE,
  35                         .end = SPEAR6XX_ICM1_UART0_BASE +
  36                                 SPEAR6XX_ICM1_UART0_SIZE - 1,
  37                         .flags = IORESOURCE_MEM,
  38                 },
  39                 .irq = {IRQ_UART_0, NO_IRQ},
  40         }, {
  41                 .dev = {
  42                         .init_name = "uart1",
  43                 },
  44                 .res = {
  45                         .start = SPEAR6XX_ICM1_UART1_BASE,
  46                         .end = SPEAR6XX_ICM1_UART1_BASE +
  47                                 SPEAR6XX_ICM1_UART1_SIZE - 1,
  48                         .flags = IORESOURCE_MEM,
  49                 },
  50                 .irq = {IRQ_UART_1, NO_IRQ},
  51         }
  52 };
  53
  54 /* gpio device registeration */
  55 static struct pl061_platform_data gpio_plat_data[] = {
  56         {
  57                 .gpio_base      = 0,
  58                 .irq_base       = SPEAR_GPIO0_INT_BASE,
  59         }, {
  60                 .gpio_base      = 8,
  61                 .irq_base       = SPEAR_GPIO1_INT_BASE,
  62         }, {
  63                 .gpio_base      = 16,
  64                 .irq_base       = SPEAR_GPIO2_INT_BASE,
  65         },
  66 };
  67
  68 struct amba_device gpio_device[] = {
  69         {
  70                 .dev = {
  71                         .init_name = "gpio0",
  72                         .platform_data = &gpio_plat_data[0],
  73                 },
  74                 .res = {
  75                         .start = SPEAR6XX_CPU_GPIO_BASE,
  76                         .end = SPEAR6XX_CPU_GPIO_BASE +
  77                                 SPEAR6XX_CPU_GPIO_SIZE - 1,
  78                         .flags = IORESOURCE_MEM,
  79                 },
  80                 .irq = {IRQ_LOCAL_GPIO, NO_IRQ},
  81         }, {
  82                 .dev = {
  83                         .init_name = "gpio1",
  84                         .platform_data = &gpio_plat_data[1],
  85                 },
  86                 .res = {
  87                         .start = SPEAR6XX_ICM3_GPIO_BASE,
  88                         .end = SPEAR6XX_ICM3_GPIO_BASE +
  89                                 SPEAR6XX_ICM3_GPIO_SIZE - 1,
  90                         .flags = IORESOURCE_MEM,
  91                 },
  92                 .irq = {IRQ_BASIC_GPIO, NO_IRQ},
  93         }, {
  94                 .dev = {
  95                         .init_name = "gpio2",
  96                         .platform_data = &gpio_plat_data[2],
  97                 },
  98                 .res = {
  99                         .start = SPEAR6XX_ICM2_GPIO_BASE,
 100                         .end = SPEAR6XX_ICM2_GPIO_BASE +
 101                                 SPEAR6XX_ICM2_GPIO_SIZE - 1,
 102                         .flags = IORESOURCE_MEM,
 103                 },
 104                 .irq = {IRQ_APPL_GPIO, NO_IRQ},
 105         }
 106 };
 107
 108 /* This will add devices, and do machine specific tasks */
 109 void __init spear6xx_init(void)
 110 {
 111         /* nothing to do for now */
 112 }
 113
 114 /* This will initialize vic */
 115 void __init spear6xx_init_irq(void)
 116 {
 117         vic_init((void __iomem *)VA_SPEAR6XX_CPU_VIC_PRI_BASE, 0, ~0, 0);
 118         vic_init((void __iomem *)VA_SPEAR6XX_CPU_VIC_SEC_BASE, 32, ~0, 0);
 119 }
 120
 121 /* Following will create static virtual/physical mappings */
 122 static struct map_desc spear6xx_io_desc[] __initdata = {
 123         {
 124                 .virtual        = VA_SPEAR6XX_ICM1_UART0_BASE,
 125                 .pfn            = __phys_to_pfn(SPEAR6XX_ICM1_UART0_BASE),
 126                 .length         = SPEAR6XX_ICM1_UART0_SIZE,
 127                 .type           = MT_DEVICE
 128         }, {
 129                 .virtual        = VA_SPEAR6XX_CPU_VIC_PRI_BASE,
 130                 .pfn            = __phys_to_pfn(SPEAR6XX_CPU_VIC_PRI_BASE),
 131                 .length         = SPEAR6XX_CPU_VIC_PRI_SIZE,
 132                 .type           = MT_DEVICE
 133         }, {
 134                 .virtual        = VA_SPEAR6XX_CPU_VIC_SEC_BASE,
 135                 .pfn            = __phys_to_pfn(SPEAR6XX_CPU_VIC_SEC_BASE),
 136                 .length         = SPEAR6XX_CPU_VIC_SEC_SIZE,
 137                 .type           = MT_DEVICE
 138         }, {
 139                 .virtual        = VA_SPEAR6XX_ICM3_SYS_CTRL_BASE,
 140                 .pfn            = __phys_to_pfn(SPEAR6XX_ICM3_SYS_CTRL_BASE),
 141                 .length         = SPEAR6XX_ICM3_MISC_REG_BASE,
 142                 .type           = MT_DEVICE
 143         }, {
 144                 .virtual        = VA_SPEAR6XX_ICM3_MISC_REG_BASE,
 145                 .pfn            = __phys_to_pfn(SPEAR6XX_ICM3_MISC_REG_BASE),
 146                 .length         = SPEAR6XX_ICM3_MISC_REG_SIZE,
 147                 .type           = MT_DEVICE
 148         },
 149 };
 150
 151 /* This will create static memory mapping for selected devices */
 152 void __init spear6xx_map_io(void)
 153 {
 154         iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
 155
 156         /* This will initialize clock framework */
 157         clk_init();
 158 }