arch/arm/mach-shmobile/setup-emev2.c

   1 /*
   2  * Emma Mobile EV2 processor support
   3  *
   4  * Copyright (C) 2012  Magnus Damm
   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; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/irq.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/platform_data/gpio-em.h>
  25 #include <linux/of_platform.h>
  26 #include <linux/delay.h>
  27 #include <linux/input.h>
  28 #include <linux/io.h>
  29 #include <linux/irqchip/arm-gic.h>
  30 #include <mach/hardware.h>
  31 #include <mach/common.h>
  32 #include <mach/emev2.h>
  33 #include <mach/irqs.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/time.h>
  38
  39 static struct map_desc emev2_io_desc[] __initdata = {
  40 #ifdef CONFIG_SMP
  41         /* 128K entity map for 0xe0100000 (SMU) */
  42         {
  43                 .virtual        = 0xe0100000,
  44                 .pfn            = __phys_to_pfn(0xe0100000),
  45                 .length         = SZ_128K,
  46                 .type           = MT_DEVICE
  47         },
  48         /* 2M mapping for SCU + L2 controller */
  49         {
  50                 .virtual        = 0xf0000000,
  51                 .pfn            = __phys_to_pfn(0x1e000000),
  52                 .length         = SZ_2M,
  53                 .type           = MT_DEVICE
  54         },
  55 #endif
  56 };
  57
  58 void __init emev2_map_io(void)
  59 {
  60         iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
  61 }
  62
  63 /* UART */
  64 static struct resource uart0_resources[] = {
  65         DEFINE_RES_MEM(0xe1020000, 0x38),
  66         DEFINE_RES_IRQ(40),
  67 };
  68
  69 static struct resource uart1_resources[] = {
  70         DEFINE_RES_MEM(0xe1030000, 0x38),
  71         DEFINE_RES_IRQ(41),
  72 };
  73
  74 static struct resource uart2_resources[] = {
  75         DEFINE_RES_MEM(0xe1040000, 0x38),
  76         DEFINE_RES_IRQ(42),
  77 };
  78
  79 static struct resource uart3_resources[] = {
  80         DEFINE_RES_MEM(0xe1050000, 0x38),
  81         DEFINE_RES_IRQ(43),
  82 };
  83
  84 #define emev2_register_uart(idx)                                        \
  85         platform_device_register_simple("serial8250-em", idx,           \
  86                                         uart##idx##_resources,          \
  87                                         ARRAY_SIZE(uart##idx##_resources))
  88
  89 /* STI */
  90 static struct resource sti_resources[] = {
  91         DEFINE_RES_MEM(0xe0180000, 0x54),
  92         DEFINE_RES_IRQ(157),
  93 };
  94
  95 #define emev2_register_sti()                                    \
  96         platform_device_register_simple("em_sti", 0,            \
  97                                         sti_resources,          \
  98                                         ARRAY_SIZE(sti_resources))
  99
 100 /* GIO */
 101 static struct gpio_em_config gio0_config = {
 102         .gpio_base = 0,
 103         .irq_base = EMEV2_GPIO_IRQ(0),
 104         .number_of_pins = 32,
 105 };
 106
 107 static struct resource gio0_resources[] = {
 108         DEFINE_RES_MEM(0xe0050000, 0x2c),
 109         DEFINE_RES_MEM(0xe0050040, 0x20),
 110         DEFINE_RES_IRQ(99),
 111         DEFINE_RES_IRQ(100),
 112 };
 113
 114 static struct gpio_em_config gio1_config = {
 115         .gpio_base = 32,
 116         .irq_base = EMEV2_GPIO_IRQ(32),
 117         .number_of_pins = 32,
 118 };
 119
 120 static struct resource gio1_resources[] = {
 121         DEFINE_RES_MEM(0xe0050080, 0x2c),
 122         DEFINE_RES_MEM(0xe00500c0, 0x20),
 123         DEFINE_RES_IRQ(101),
 124         DEFINE_RES_IRQ(102),
 125 };
 126
 127 static struct gpio_em_config gio2_config = {
 128         .gpio_base = 64,
 129         .irq_base = EMEV2_GPIO_IRQ(64),
 130         .number_of_pins = 32,
 131 };
 132
 133 static struct resource gio2_resources[] = {
 134         DEFINE_RES_MEM(0xe0050100, 0x2c),
 135         DEFINE_RES_MEM(0xe0050140, 0x20),
 136         DEFINE_RES_IRQ(103),
 137         DEFINE_RES_IRQ(104),
 138 };
 139
 140 static struct gpio_em_config gio3_config = {
 141         .gpio_base = 96,
 142         .irq_base = EMEV2_GPIO_IRQ(96),
 143         .number_of_pins = 32,
 144 };
 145
 146 static struct resource gio3_resources[] = {
 147         DEFINE_RES_MEM(0xe0050180, 0x2c),
 148         DEFINE_RES_MEM(0xe00501c0, 0x20),
 149         DEFINE_RES_IRQ(105),
 150         DEFINE_RES_IRQ(106),
 151 };
 152
 153 static struct gpio_em_config gio4_config = {
 154         .gpio_base = 128,
 155         .irq_base = EMEV2_GPIO_IRQ(128),
 156         .number_of_pins = 31,
 157 };
 158
 159 static struct resource gio4_resources[] = {
 160         DEFINE_RES_MEM(0xe0050200, 0x2c),
 161         DEFINE_RES_MEM(0xe0050240, 0x20),
 162         DEFINE_RES_IRQ(107),
 163         DEFINE_RES_IRQ(108),
 164 };
 165
 166 #define emev2_register_gio(idx)                                         \
 167         platform_device_register_resndata(&platform_bus, "em_gio",      \
 168                                           idx, gio##idx##_resources,    \
 169                                           ARRAY_SIZE(gio##idx##_resources), \
 170                                           &gio##idx##_config,           \
 171                                           sizeof(struct gpio_em_config))
 172
 173 static struct resource pmu_resources[] = {
 174         DEFINE_RES_IRQ(152),
 175         DEFINE_RES_IRQ(153),
 176 };
 177
 178 #define emev2_register_pmu()                                    \
 179         platform_device_register_simple("arm-pmu", -1,          \
 180                                         pmu_resources,          \
 181                                         ARRAY_SIZE(pmu_resources))
 182
 183 void __init emev2_add_standard_devices(void)
 184 {
 185         emev2_clock_init();
 186
 187         emev2_register_uart(0);
 188         emev2_register_uart(1);
 189         emev2_register_uart(2);
 190         emev2_register_uart(3);
 191         emev2_register_sti();
 192         emev2_register_gio(0);
 193         emev2_register_gio(1);
 194         emev2_register_gio(2);
 195         emev2_register_gio(3);
 196         emev2_register_gio(4);
 197         emev2_register_pmu();
 198 }
 199
 200 void __init emev2_init_delay(void)
 201 {
 202         shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
 203 }
 204
 205 void __init emev2_init_irq(void)
 206 {
 207         void __iomem *gic_dist_base;
 208         void __iomem *gic_cpu_base;
 209
 210         /* Static mappings, never released */
 211         gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
 212         gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
 213         BUG_ON(!gic_dist_base || !gic_cpu_base);
 214
 215         /* Use GIC to handle interrupts */
 216         gic_init(0, 29, gic_dist_base, gic_cpu_base);
 217 }
 218
 219 #ifdef CONFIG_USE_OF
 220
 221 static const char *emev2_boards_compat_dt[] __initdata = {
 222         "renesas,emev2",
 223         NULL,
 224 };
 225
 226 DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
 227         .smp            = smp_ops(emev2_smp_ops),
 228         .init_early     = emev2_init_delay,
 229         .nr_irqs        = NR_IRQS_LEGACY,
 230         .dt_compat      = emev2_boards_compat_dt,
 231 MACHINE_END
 232
 233 #endif /* CONFIG_USE_OF */