setup-emev2.c

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/*
 * Emma Mobile EV2 processor support
 *
 * Copyright (C) 2012  Magnus Damm
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/platform_data/gpio-em.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/of_irq.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/emev2.h>
#include <mach/irqs.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/hardware/gic.h>

static struct map_desc emev2_io_desc[] __initdata = {
#ifdef CONFIG_SMP
    /* 128K entity map for 0xe0100000 (SMU) */
    {
        .virtual    = 0xe0100000,
        .pfn        = __phys_to_pfn(0xe0100000),
        .length     = SZ_128K,
        .type       = MT_DEVICE
    },
    /* 2M mapping for SCU + L2 controller */
    {
        .virtual    = 0xf0000000,
        .pfn        = __phys_to_pfn(0x1e000000),
        .length     = SZ_2M,
        .type       = MT_DEVICE
    },
#endif
};

void __init emev2_map_io(void)
{
    iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
}

/* UART */
static struct resource uart0_resources[] = {
    [0] = {
        .start  = 0xe1020000,
        .end    = 0xe1020037,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = 40,
        .flags  = IORESOURCE_IRQ,
    }
};

static struct platform_device uart0_device = {
    .name       = "serial8250-em",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(uart0_resources),
    .resource   = uart0_resources,
};

static struct resource uart1_resources[] = {
    [0] = {
        .start  = 0xe1030000,
        .end    = 0xe1030037,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = 41,
        .flags  = IORESOURCE_IRQ,
    }
};

static struct platform_device uart1_device = {
    .name       = "serial8250-em",
    .id     = 1,
    .num_resources  = ARRAY_SIZE(uart1_resources),
    .resource   = uart1_resources,
};

static struct resource uart2_resources[] = {
    [0] = {
        .start  = 0xe1040000,
        .end    = 0xe1040037,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = 42,
        .flags  = IORESOURCE_IRQ,
    }
};

static struct platform_device uart2_device = {
    .name       = "serial8250-em",
    .id     = 2,
    .num_resources  = ARRAY_SIZE(uart2_resources),
    .resource   = uart2_resources,
};

static struct resource uart3_resources[] = {
    [0] = {
        .start  = 0xe1050000,
        .end    = 0xe1050037,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = 43,
        .flags  = IORESOURCE_IRQ,
    }
};

static struct platform_device uart3_device = {
    .name       = "serial8250-em",
    .id     = 3,
    .num_resources  = ARRAY_SIZE(uart3_resources),
    .resource   = uart3_resources,
};

/* STI */
static struct resource sti_resources[] = {
    [0] = {
        .name   = "STI",
        .start  = 0xe0180000,
        .end    = 0xe0180053,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = 157,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device sti_device = {
    .name       = "em_sti",
    .id     = 0,
    .resource   = sti_resources,
    .num_resources  = ARRAY_SIZE(sti_resources),
};


/* GIO */
static struct gpio_em_config gio0_config = {
    .gpio_base = 0,
    .irq_base = EMEV2_GPIO_IRQ(0),
    .number_of_pins = 32,
};

static struct resource gio0_resources[] = {
    [0] = {
        .name   = "GIO_000",
        .start  = 0xe0050000,
        .end    = 0xe005002b,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .name   = "GIO_000",
        .start  = 0xe0050040,
        .end    = 0xe005005f,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = 99,
        .flags  = IORESOURCE_IRQ,
    },
    [3] = {
        .start  = 100,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device gio0_device = {
    .name       = "em_gio",
    .id     = 0,
    .resource   = gio0_resources,
    .num_resources  = ARRAY_SIZE(gio0_resources),
    .dev        = {
        .platform_data  = &gio0_config,
    },
};

static struct gpio_em_config gio1_config = {
    .gpio_base = 32,
    .irq_base = EMEV2_GPIO_IRQ(32),
    .number_of_pins = 32,
};

static struct resource gio1_resources[] = {
    [0] = {
        .name   = "GIO_032",
        .start  = 0xe0050080,
        .end    = 0xe00500ab,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .name   = "GIO_032",
        .start  = 0xe00500c0,
        .end    = 0xe00500df,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = 101,
        .flags  = IORESOURCE_IRQ,
    },
    [3] = {
        .start  = 102,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device gio1_device = {
    .name       = "em_gio",
    .id     = 1,
    .resource   = gio1_resources,
    .num_resources  = ARRAY_SIZE(gio1_resources),
    .dev        = {
        .platform_data  = &gio1_config,
    },
};

static struct gpio_em_config gio2_config = {
    .gpio_base = 64,
    .irq_base = EMEV2_GPIO_IRQ(64),
    .number_of_pins = 32,
};

static struct resource gio2_resources[] = {
    [0] = {
        .name   = "GIO_064",
        .start  = 0xe0050100,
        .end    = 0xe005012b,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .name   = "GIO_064",
        .start  = 0xe0050140,
        .end    = 0xe005015f,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = 103,
        .flags  = IORESOURCE_IRQ,
    },
    [3] = {
        .start  = 104,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device gio2_device = {
    .name       = "em_gio",
    .id     = 2,
    .resource   = gio2_resources,
    .num_resources  = ARRAY_SIZE(gio2_resources),
    .dev        = {
        .platform_data  = &gio2_config,
    },
};

static struct gpio_em_config gio3_config = {
    .gpio_base = 96,
    .irq_base = EMEV2_GPIO_IRQ(96),
    .number_of_pins = 32,
};

static struct resource gio3_resources[] = {
    [0] = {
        .name   = "GIO_096",
        .start  = 0xe0050100,
        .end    = 0xe005012b,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .name   = "GIO_096",
        .start  = 0xe0050140,
        .end    = 0xe005015f,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = 105,
        .flags  = IORESOURCE_IRQ,
    },
    [3] = {
        .start  = 106,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device gio3_device = {
    .name       = "em_gio",
    .id     = 3,
    .resource   = gio3_resources,
    .num_resources  = ARRAY_SIZE(gio3_resources),
    .dev        = {
        .platform_data  = &gio3_config,
    },
};

static struct gpio_em_config gio4_config = {
    .gpio_base = 128,
    .irq_base = EMEV2_GPIO_IRQ(128),
    .number_of_pins = 31,
};

static struct resource gio4_resources[] = {
    [0] = {
        .name   = "GIO_128",
        .start  = 0xe0050200,
        .end    = 0xe005022b,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .name   = "GIO_128",
        .start  = 0xe0050240,
        .end    = 0xe005025f,
        .flags  = IORESOURCE_MEM,
    },
    [2] = {
        .start  = 107,
        .flags  = IORESOURCE_IRQ,
    },
    [3] = {
        .start  = 108,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device gio4_device = {
    .name       = "em_gio",
    .id     = 4,
    .resource   = gio4_resources,
    .num_resources  = ARRAY_SIZE(gio4_resources),
    .dev        = {
        .platform_data  = &gio4_config,
    },
};

static struct resource pmu_resources[] = {
    [0] = {
        .start  = 152,
        .end    = 152,
        .flags  = IORESOURCE_IRQ,
    },
    [1] = {
        .start  = 153,
        .end    = 153,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device pmu_device = {
    .name       = "arm-pmu",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(pmu_resources),
    .resource   = pmu_resources,
};

static struct platform_device *emev2_early_devices[] __initdata = {
    &uart0_device,
    &uart1_device,
    &uart2_device,
    &uart3_device,
};

static struct platform_device *emev2_late_devices[] __initdata = {
    &sti_device,
    &gio0_device,
    &gio1_device,
    &gio2_device,
    &gio3_device,
    &gio4_device,
    &pmu_device,
};

void __init emev2_add_standard_devices(void)
{
    emev2_clock_init();

    platform_add_devices(emev2_early_devices,
                 ARRAY_SIZE(emev2_early_devices));

    platform_add_devices(emev2_late_devices,
                 ARRAY_SIZE(emev2_late_devices));
}

void __init emev2_init_delay(void)
{
    shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
}

void __init emev2_add_early_devices(void)
{
    emev2_init_delay();

    early_platform_add_devices(emev2_early_devices,
                   ARRAY_SIZE(emev2_early_devices));

    /* setup early console here as well */
    shmobile_setup_console();
}

void __init emev2_init_irq(void)
{
    void __iomem *gic_dist_base;
    void __iomem *gic_cpu_base;

    /* Static mappings, never released */
    gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
    gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
    BUG_ON(!gic_dist_base || !gic_cpu_base);

    /* Use GIC to handle interrupts */
    gic_init(0, 29, gic_dist_base, gic_cpu_base);
}

#ifdef CONFIG_USE_OF
static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
    { }
};

void __init emev2_add_standard_devices_dt(void)
{
    of_platform_populate(NULL, of_default_bus_match_table,
                 emev2_auxdata_lookup, NULL);
}

static const struct of_device_id emev2_dt_irq_match[] = {
    { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
    {},
};

static const char *emev2_boards_compat_dt[] __initdata = {
    "renesas,emev2",
    NULL,
};

void __init emev2_init_irq_dt(void)
{
    of_irq_init(emev2_dt_irq_match);
}

DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
    .smp        = smp_ops(emev2_smp_ops),
    .init_early = emev2_init_delay,
    .nr_irqs    = NR_IRQS_LEGACY,
    .init_irq   = emev2_init_irq_dt,
    .handle_irq = gic_handle_irq,
    .init_machine   = emev2_add_standard_devices_dt,
    .timer      = &shmobile_timer,
    .dt_compat  = emev2_boards_compat_dt,
MACHINE_END

#endif /* CONFIG_USE_OF */