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/ptrace.h>
  17 #include <linux/io.h>
  18 #include <asm/hardware/vic.h>
  19 #include <asm/irq.h>
  20 #include <asm/mach/arch.h>
  21 #include <mach/irqs.h>
  22 #include <mach/generic.h>
  23 #include <mach/spear.h>
  24
  25 /* Add spear6xx machines common devices here */
  26 /* uart device registration */
  27 struct amba_device uart_device[] = {
  28         {
  29                 .dev = {
  30                         .init_name = "uart0",
  31                 },
  32                 .res = {
  33                         .start = SPEAR6XX_ICM1_UART0_BASE,
  34                         .end = SPEAR6XX_ICM1_UART0_BASE +
  35                                 SPEAR6XX_ICM1_UART0_SIZE - 1,
  36                         .flags = IORESOURCE_MEM,
  37                 },
  38                 .irq = {IRQ_UART_0, NO_IRQ},
  39         }, {
  40                 .dev = {
  41                         .init_name = "uart1",
  42                 },
  43                 .res = {
  44                         .start = SPEAR6XX_ICM1_UART1_BASE,
  45                         .end = SPEAR6XX_ICM1_UART1_BASE +
  46                                 SPEAR6XX_ICM1_UART1_SIZE - 1,
  47                         .flags = IORESOURCE_MEM,
  48                 },
  49                 .irq = {IRQ_UART_1, NO_IRQ},
  50         }
  51 };
  52
  53 /* gpio device registration */
  54 static struct pl061_platform_data gpio_plat_data[] = {
  55         {
  56                 .gpio_base      = 0,
  57                 .irq_base       = SPEAR_GPIO0_INT_BASE,
  58         }, {
  59                 .gpio_base      = 8,
  60                 .irq_base       = SPEAR_GPIO1_INT_BASE,
  61         }, {
  62                 .gpio_base      = 16,
  63                 .irq_base       = SPEAR_GPIO2_INT_BASE,
  64         },
  65 };
  66
  67 struct amba_device gpio_device[] = {
  68         {
  69                 .dev = {
  70                         .init_name = "gpio0",
  71                         .platform_data = &gpio_plat_data[0],
  72                 },
  73                 .res = {
  74                         .start = SPEAR6XX_CPU_GPIO_BASE,
  75                         .end = SPEAR6XX_CPU_GPIO_BASE +
  76                                 SPEAR6XX_CPU_GPIO_SIZE - 1,
  77                         .flags = IORESOURCE_MEM,
  78                 },
  79                 .irq = {IRQ_LOCAL_GPIO, NO_IRQ},
  80         }, {
  81                 .dev = {
  82                         .init_name = "gpio1",
  83                         .platform_data = &gpio_plat_data[1],
  84                 },
  85                 .res = {
  86                         .start = SPEAR6XX_ICM3_GPIO_BASE,
  87                         .end = SPEAR6XX_ICM3_GPIO_BASE +
  88                                 SPEAR6XX_ICM3_GPIO_SIZE - 1,
  89                         .flags = IORESOURCE_MEM,
  90                 },
  91                 .irq = {IRQ_BASIC_GPIO, NO_IRQ},
  92         }, {
  93                 .dev = {
  94                         .init_name = "gpio2",
  95                         .platform_data = &gpio_plat_data[2],
  96                 },
  97                 .res = {
  98                         .start = SPEAR6XX_ICM2_GPIO_BASE,
  99                         .end = SPEAR6XX_ICM2_GPIO_BASE +
 100                                 SPEAR6XX_ICM2_GPIO_SIZE - 1,
 101                         .flags = IORESOURCE_MEM,
 102                 },
 103                 .irq = {IRQ_APPL_GPIO, NO_IRQ},
 104         }
 105 };
 106
 107 /* This will add devices, and do machine specific tasks */
 108 void __init spear6xx_init(void)
 109 {
 110         /* nothing to do for now */
 111 }
 112
 113 /* This will initialize vic */
 114 void __init spear6xx_init_irq(void)
 115 {
 116         vic_init((void __iomem *)VA_SPEAR6XX_CPU_VIC_PRI_BASE, 0, ~0, 0);
 117         vic_init((void __iomem *)VA_SPEAR6XX_CPU_VIC_SEC_BASE, 32, ~0, 0);
 118 }
 119
 120 /* Following will create static virtual/physical mappings */
 121 static struct map_desc spear6xx_io_desc[] __initdata = {
 122         {
 123                 .virtual        = VA_SPEAR6XX_ICM1_UART0_BASE,
 124                 .pfn            = __phys_to_pfn(SPEAR6XX_ICM1_UART0_BASE),
 125                 .length         = SPEAR6XX_ICM1_UART0_SIZE,
 126                 .type           = MT_DEVICE
 127         }, {
 128                 .virtual        = VA_SPEAR6XX_CPU_VIC_PRI_BASE,
 129                 .pfn            = __phys_to_pfn(SPEAR6XX_CPU_VIC_PRI_BASE),
 130                 .length         = SPEAR6XX_CPU_VIC_PRI_SIZE,
 131                 .type           = MT_DEVICE
 132         }, {
 133                 .virtual        = VA_SPEAR6XX_CPU_VIC_SEC_BASE,
 134                 .pfn            = __phys_to_pfn(SPEAR6XX_CPU_VIC_SEC_BASE),
 135                 .length         = SPEAR6XX_CPU_VIC_SEC_SIZE,
 136                 .type           = MT_DEVICE
 137         }, {
 138                 .virtual        = VA_SPEAR6XX_ICM3_SYS_CTRL_BASE,
 139                 .pfn            = __phys_to_pfn(SPEAR6XX_ICM3_SYS_CTRL_BASE),
 140                 .length         = SPEAR6XX_ICM3_MISC_REG_BASE,
 141                 .type           = MT_DEVICE
 142         }, {
 143                 .virtual        = VA_SPEAR6XX_ICM3_MISC_REG_BASE,
 144                 .pfn            = __phys_to_pfn(SPEAR6XX_ICM3_MISC_REG_BASE),
 145                 .length         = SPEAR6XX_ICM3_MISC_REG_SIZE,
 146                 .type           = MT_DEVICE
 147         },
 148 };
 149
 150 /* This will create static memory mapping for selected devices */
 151 void __init spear6xx_map_io(void)
 152 {
 153         iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
 154
 155         /* This will initialize clock framework */
 156         clk_init();
 157 }