464 lines
9.1 KiB
C
464 lines
9.1 KiB
C
/*
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* Emma Mobile EV2 processor support
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*
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* Copyright (C) 2012 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/irqchip.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/gpio-em.h>
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#include <linux/of_platform.h>
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/io.h>
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#include <linux/irqchip/arm-gic.h>
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#include <mach/hardware.h>
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#include <mach/common.h>
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#include <mach/emev2.h>
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#include <mach/irqs.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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static struct map_desc emev2_io_desc[] __initdata = {
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#ifdef CONFIG_SMP
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/* 128K entity map for 0xe0100000 (SMU) */
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{
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.virtual = 0xe0100000,
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.pfn = __phys_to_pfn(0xe0100000),
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.length = SZ_128K,
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.type = MT_DEVICE
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},
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/* 2M mapping for SCU + L2 controller */
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{
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.virtual = 0xf0000000,
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.pfn = __phys_to_pfn(0x1e000000),
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.length = SZ_2M,
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.type = MT_DEVICE
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},
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#endif
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};
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void __init emev2_map_io(void)
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{
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iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
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}
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/* UART */
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static struct resource uart0_resources[] = {
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[0] = {
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.start = 0xe1020000,
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.end = 0xe1020037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 40,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart0_device = {
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.name = "serial8250-em",
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.id = 0,
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.num_resources = ARRAY_SIZE(uart0_resources),
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.resource = uart0_resources,
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};
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static struct resource uart1_resources[] = {
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[0] = {
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.start = 0xe1030000,
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.end = 0xe1030037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 41,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart1_device = {
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.name = "serial8250-em",
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.id = 1,
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.num_resources = ARRAY_SIZE(uart1_resources),
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.resource = uart1_resources,
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};
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static struct resource uart2_resources[] = {
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[0] = {
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.start = 0xe1040000,
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.end = 0xe1040037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 42,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart2_device = {
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.name = "serial8250-em",
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.id = 2,
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.num_resources = ARRAY_SIZE(uart2_resources),
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.resource = uart2_resources,
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};
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static struct resource uart3_resources[] = {
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[0] = {
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.start = 0xe1050000,
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.end = 0xe1050037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 43,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart3_device = {
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.name = "serial8250-em",
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.id = 3,
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.num_resources = ARRAY_SIZE(uart3_resources),
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.resource = uart3_resources,
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};
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/* STI */
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static struct resource sti_resources[] = {
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[0] = {
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.name = "STI",
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.start = 0xe0180000,
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.end = 0xe0180053,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 157,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device sti_device = {
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.name = "em_sti",
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.id = 0,
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.resource = sti_resources,
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.num_resources = ARRAY_SIZE(sti_resources),
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};
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/* GIO */
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static struct gpio_em_config gio0_config = {
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.gpio_base = 0,
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.irq_base = EMEV2_GPIO_IRQ(0),
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.number_of_pins = 32,
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};
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static struct resource gio0_resources[] = {
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[0] = {
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.name = "GIO_000",
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.start = 0xe0050000,
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.end = 0xe005002b,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "GIO_000",
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.start = 0xe0050040,
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.end = 0xe005005f,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = 99,
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.flags = IORESOURCE_IRQ,
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},
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[3] = {
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.start = 100,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device gio0_device = {
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.name = "em_gio",
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.id = 0,
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.resource = gio0_resources,
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.num_resources = ARRAY_SIZE(gio0_resources),
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.dev = {
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.platform_data = &gio0_config,
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},
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};
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static struct gpio_em_config gio1_config = {
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.gpio_base = 32,
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.irq_base = EMEV2_GPIO_IRQ(32),
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.number_of_pins = 32,
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};
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static struct resource gio1_resources[] = {
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[0] = {
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.name = "GIO_032",
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.start = 0xe0050080,
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.end = 0xe00500ab,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "GIO_032",
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.start = 0xe00500c0,
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.end = 0xe00500df,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = 101,
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.flags = IORESOURCE_IRQ,
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},
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[3] = {
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.start = 102,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device gio1_device = {
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.name = "em_gio",
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.id = 1,
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.resource = gio1_resources,
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.num_resources = ARRAY_SIZE(gio1_resources),
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.dev = {
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.platform_data = &gio1_config,
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},
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};
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static struct gpio_em_config gio2_config = {
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.gpio_base = 64,
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.irq_base = EMEV2_GPIO_IRQ(64),
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.number_of_pins = 32,
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};
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static struct resource gio2_resources[] = {
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[0] = {
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.name = "GIO_064",
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.start = 0xe0050100,
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.end = 0xe005012b,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "GIO_064",
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.start = 0xe0050140,
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.end = 0xe005015f,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = 103,
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.flags = IORESOURCE_IRQ,
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},
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[3] = {
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.start = 104,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device gio2_device = {
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.name = "em_gio",
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.id = 2,
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.resource = gio2_resources,
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.num_resources = ARRAY_SIZE(gio2_resources),
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.dev = {
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.platform_data = &gio2_config,
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},
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};
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static struct gpio_em_config gio3_config = {
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.gpio_base = 96,
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.irq_base = EMEV2_GPIO_IRQ(96),
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.number_of_pins = 32,
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};
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static struct resource gio3_resources[] = {
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[0] = {
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.name = "GIO_096",
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.start = 0xe0050100,
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.end = 0xe005012b,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "GIO_096",
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.start = 0xe0050140,
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.end = 0xe005015f,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = 105,
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.flags = IORESOURCE_IRQ,
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},
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[3] = {
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.start = 106,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device gio3_device = {
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.name = "em_gio",
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.id = 3,
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.resource = gio3_resources,
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.num_resources = ARRAY_SIZE(gio3_resources),
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.dev = {
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.platform_data = &gio3_config,
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},
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};
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static struct gpio_em_config gio4_config = {
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.gpio_base = 128,
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.irq_base = EMEV2_GPIO_IRQ(128),
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.number_of_pins = 31,
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};
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static struct resource gio4_resources[] = {
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[0] = {
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.name = "GIO_128",
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.start = 0xe0050200,
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.end = 0xe005022b,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "GIO_128",
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.start = 0xe0050240,
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.end = 0xe005025f,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = 107,
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.flags = IORESOURCE_IRQ,
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},
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[3] = {
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.start = 108,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device gio4_device = {
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.name = "em_gio",
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.id = 4,
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.resource = gio4_resources,
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.num_resources = ARRAY_SIZE(gio4_resources),
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.dev = {
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.platform_data = &gio4_config,
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},
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};
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static struct resource pmu_resources[] = {
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[0] = {
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.start = 152,
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.end = 152,
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.flags = IORESOURCE_IRQ,
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},
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[1] = {
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.start = 153,
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.end = 153,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device pmu_device = {
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.name = "arm-pmu",
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.id = -1,
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.num_resources = ARRAY_SIZE(pmu_resources),
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.resource = pmu_resources,
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};
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static struct platform_device *emev2_early_devices[] __initdata = {
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&uart0_device,
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&uart1_device,
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&uart2_device,
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&uart3_device,
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};
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static struct platform_device *emev2_late_devices[] __initdata = {
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&sti_device,
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&gio0_device,
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&gio1_device,
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&gio2_device,
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&gio3_device,
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&gio4_device,
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&pmu_device,
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};
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void __init emev2_add_standard_devices(void)
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{
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emev2_clock_init();
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platform_add_devices(emev2_early_devices,
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ARRAY_SIZE(emev2_early_devices));
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platform_add_devices(emev2_late_devices,
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ARRAY_SIZE(emev2_late_devices));
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}
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void __init emev2_init_delay(void)
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{
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shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
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}
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void __init emev2_add_early_devices(void)
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{
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emev2_init_delay();
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early_platform_add_devices(emev2_early_devices,
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ARRAY_SIZE(emev2_early_devices));
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/* setup early console here as well */
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shmobile_setup_console();
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}
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void __init emev2_init_irq(void)
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{
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void __iomem *gic_dist_base;
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void __iomem *gic_cpu_base;
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/* Static mappings, never released */
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gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
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gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
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BUG_ON(!gic_dist_base || !gic_cpu_base);
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/* Use GIC to handle interrupts */
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gic_init(0, 29, gic_dist_base, gic_cpu_base);
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}
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#ifdef CONFIG_USE_OF
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static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
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{ }
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};
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void __init emev2_add_standard_devices_dt(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table,
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emev2_auxdata_lookup, NULL);
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}
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static const char *emev2_boards_compat_dt[] __initdata = {
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"renesas,emev2",
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NULL,
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};
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DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
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.smp = smp_ops(emev2_smp_ops),
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.init_early = emev2_init_delay,
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.nr_irqs = NR_IRQS_LEGACY,
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.init_irq = irqchip_init,
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.init_machine = emev2_add_standard_devices_dt,
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.init_time = shmobile_timer_init,
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.dt_compat = emev2_boards_compat_dt,
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MACHINE_END
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#endif /* CONFIG_USE_OF */
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