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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>
126 lines
2.8 KiB
C
126 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// Copyright (c) 2007 Simtec Electronics
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// Ben Dooks <ben@simtec.co.uk>
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//
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// http://www.fluff.org/ben/smdk2443/
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//
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// Thanks to Samsung for the loan of an SMDK2443
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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 <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 "regs-gpio.h"
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#include <linux/platform_data/fb-s3c2410.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 smdk2443_iodesc[] __initdata = {
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/* ISA IO Space map (memory space selected by A24) */
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{
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.virtual = (u32)S3C24XX_VA_ISA_BYTE,
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.pfn = __phys_to_pfn(S3C2410_CS2),
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.length = 0x10000,
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.type = MT_DEVICE,
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}, {
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.virtual = (u32)S3C24XX_VA_ISA_BYTE + 0x10000,
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.pfn = __phys_to_pfn(S3C2410_CS2 + (1<<24)),
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.length = SZ_4M,
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.type = MT_DEVICE,
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}
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};
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#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
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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 smdk2443_uartcfgs[] __initdata = {
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[0] = {
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.hwport = 0,
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.flags = 0,
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.ucon = 0x3c5,
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.ulcon = 0x03,
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.ufcon = 0x51,
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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 = 0x3c5,
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.ulcon = 0x03,
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.ufcon = 0x51,
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},
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/* IR port */
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[2] = {
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.hwport = 2,
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.flags = 0,
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.ucon = 0x3c5,
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.ulcon = 0x43,
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.ufcon = 0x51,
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},
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[3] = {
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.hwport = 3,
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.flags = 0,
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.ucon = 0x3c5,
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.ulcon = 0x03,
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.ufcon = 0x51,
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}
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};
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static struct platform_device *smdk2443_devices[] __initdata = {
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&s3c_device_wdt,
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&s3c_device_i2c0,
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&s3c_device_hsmmc1,
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&s3c2443_device_dma,
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};
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static void __init smdk2443_map_io(void)
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{
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s3c24xx_init_io(smdk2443_iodesc, ARRAY_SIZE(smdk2443_iodesc));
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s3c24xx_init_uarts(smdk2443_uartcfgs, ARRAY_SIZE(smdk2443_uartcfgs));
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s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
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}
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static void __init smdk2443_init_time(void)
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{
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s3c2443_init_clocks(12000000);
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s3c24xx_timer_init();
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}
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static void __init smdk2443_machine_init(void)
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{
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s3c_i2c0_set_platdata(NULL);
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platform_add_devices(smdk2443_devices, ARRAY_SIZE(smdk2443_devices));
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smdk_machine_init();
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}
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MACHINE_START(SMDK2443, "SMDK2443")
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/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
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.atag_offset = 0x100,
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.nr_irqs = NR_IRQS_S3C2443,
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.init_irq = s3c2443_init_irq,
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.map_io = smdk2443_map_io,
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.init_machine = smdk2443_machine_init,
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.init_time = smdk2443_init_time,
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MACHINE_END
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