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alistair23-linux/arch/arm/mach-shmobile/setup-emev2.c
Magnus Damm 3d5de27174 mach-shmobile: Emma Mobile EV2 DT support V3 
This is EMEV2 DT support V3. The support is limited to
whatever devices that are complied in the kernel. At this
point we have UARTs handled by "em-uart" and a timer
handled by "em-sti". Clocks and SMP are not supported.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-05-18 00:14:03 +02:00

453 lines
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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 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,
};
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)")
.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 */
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