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c78a41fc04
As a final bit of preparation for converting to ARCH_MULTIPLATFORM, change the interrupt handling for s3c24xx to use sparse IRQs. Since the number of possible interrupts is already fixed and relatively small per chip, just make it use all legacy interrupts preallocated using the .nr_irqs field in the machine descriptor, rather than actually allocating domains on the fly. Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// Copyright (C) 2004 by FS Forth-Systeme GmbH
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// All rights reserved.
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//
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// @Author: Jonas Dietsche
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//
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// @History:
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// derived from linux/arch/arm/mach-s3c2410/mach-bast.c, written by
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// Ben Dooks <ben@simtec.co.uk>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/serial_core.h>
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#include <linux/serial_s3c.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include "gpio-samsung.h"
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#include "gpio-cfg.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/irq.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <linux/platform_data/i2c-s3c2410.h>
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#include "devs.h"
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#include "cpu.h"
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#include "s3c24xx.h"
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#include "common-smdk-s3c24xx.h"
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static struct map_desc smdk2410_iodesc[] __initdata = {
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/* nothing here yet */
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};
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#define UCON S3C2410_UCON_DEFAULT
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#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
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#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
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static struct s3c2410_uartcfg smdk2410_uartcfgs[] __initdata = {
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[0] = {
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.hwport = 0,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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},
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[1] = {
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.hwport = 1,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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},
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[2] = {
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.hwport = 2,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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}
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};
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static struct platform_device *smdk2410_devices[] __initdata = {
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&s3c_device_ohci,
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&s3c_device_lcd,
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&s3c_device_wdt,
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&s3c_device_i2c0,
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&s3c_device_iis,
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};
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static void __init smdk2410_map_io(void)
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{
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s3c24xx_init_io(smdk2410_iodesc, ARRAY_SIZE(smdk2410_iodesc));
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s3c24xx_init_uarts(smdk2410_uartcfgs, ARRAY_SIZE(smdk2410_uartcfgs));
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s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
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}
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static void __init smdk2410_init_time(void)
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{
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s3c2410_init_clocks(12000000);
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s3c24xx_timer_init();
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}
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static void __init smdk2410_init(void)
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{
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s3c_i2c0_set_platdata(NULL);
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platform_add_devices(smdk2410_devices, ARRAY_SIZE(smdk2410_devices));
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/* Configure the I2S pins (GPE0...GPE4) in correct mode */
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s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
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S3C_GPIO_PULL_NONE);
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smdk_machine_init();
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}
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MACHINE_START(SMDK2410, "SMDK2410") /* @TODO: request a new identifier and switch
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* to SMDK2410 */
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/* Maintainer: Jonas Dietsche */
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.atag_offset = 0x100,
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.nr_irqs = NR_IRQS_S3C2410,
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.map_io = smdk2410_map_io,
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.init_irq = s3c2410_init_irq,
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.init_machine = smdk2410_init,
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.init_time = smdk2410_init_time,
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MACHINE_END
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