linux-stable/arch/arm/mach-s3c/mach-smdk2413.c
Arnd Bergmann c78a41fc04 ARM: s3c24xx: convert to sparse-irq
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>
2022-04-07 09:31:31 +02:00

163 lines
3.8 KiB
C

// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2006 Simtec Electronics
// Ben Dooks <ben@simtec.co.uk>
//
// Thanks to Dimity Andric (TomTom) and Steven Ryu (Samsung) for the
// loans of SMDK2413 to work with.
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/memblock.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/hardware/iomd.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
//#include <asm/debug-ll.h>
#include "hardware-s3c24xx.h"
#include "regs-gpio.h"
#include <linux/platform_data/usb-s3c2410_udc.h>
#include <linux/platform_data/i2c-s3c2410.h>
#include <linux/platform_data/fb-s3c2410.h>
#include "gpio-samsung.h"
#include "gpio-cfg.h"
#include "devs.h"
#include "cpu.h"
#include "s3c24xx.h"
#include "common-smdk-s3c24xx.h"
static struct map_desc smdk2413_iodesc[] __initdata = {
};
static struct s3c2410_uartcfg smdk2413_uartcfgs[] __initdata = {
[0] = {
.hwport = 0,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x03,
.ufcon = 0x51,
},
[1] = {
.hwport = 1,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x03,
.ufcon = 0x51,
},
/* IR port */
[2] = {
.hwport = 2,
.flags = 0,
.ucon = 0x3c5,
.ulcon = 0x43,
.ufcon = 0x51,
}
};
static struct s3c2410_udc_mach_info smdk2413_udc_cfg __initdata = {
.pullup_pin = S3C2410_GPF(2),
};
static struct platform_device *smdk2413_devices[] __initdata = {
&s3c_device_ohci,
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
&s3c_device_usbgadget,
&s3c2412_device_dma,
};
static void __init smdk2413_fixup(struct tag *tags, char **cmdline)
{
if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) {
memblock_add(0x30000000, SZ_64M);
}
}
static void __init smdk2413_map_io(void)
{
s3c24xx_init_io(smdk2413_iodesc, ARRAY_SIZE(smdk2413_iodesc));
s3c24xx_init_uarts(smdk2413_uartcfgs, ARRAY_SIZE(smdk2413_uartcfgs));
s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
}
static void __init smdk2413_init_time(void)
{
s3c2412_init_clocks(12000000);
s3c24xx_timer_init();
}
static void __init smdk2413_machine_init(void)
{ /* Turn off suspend on both USB ports, and switch the
* selectable USB port to USB device mode. */
s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
S3C2410_MISCCR_USBSUSPND0 |
S3C2410_MISCCR_USBSUSPND1, 0x0);
s3c24xx_udc_set_platdata(&smdk2413_udc_cfg);
s3c_i2c0_set_platdata(NULL);
/* Configure the I2S pins (GPE0...GPE4) in correct mode */
s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
S3C_GPIO_PULL_NONE);
platform_add_devices(smdk2413_devices, ARRAY_SIZE(smdk2413_devices));
smdk_machine_init();
}
MACHINE_START(S3C2413, "S3C2413")
/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
.atag_offset = 0x100,
.nr_irqs = NR_IRQS_S3C2412,
.fixup = smdk2413_fixup,
.init_irq = s3c2412_init_irq,
.map_io = smdk2413_map_io,
.init_machine = smdk2413_machine_init,
.init_time = s3c24xx_timer_init,
MACHINE_END
MACHINE_START(SMDK2412, "SMDK2412")
/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
.atag_offset = 0x100,
.nr_irqs = NR_IRQS_S3C2412,
.fixup = smdk2413_fixup,
.init_irq = s3c2412_init_irq,
.map_io = smdk2413_map_io,
.init_machine = smdk2413_machine_init,
.init_time = s3c24xx_timer_init,
MACHINE_END
MACHINE_START(SMDK2413, "SMDK2413")
/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
.atag_offset = 0x100,
.nr_irqs = NR_IRQS_S3C2412,
.fixup = smdk2413_fixup,
.init_irq = s3c2412_init_irq,
.map_io = smdk2413_map_io,
.init_machine = smdk2413_machine_init,
.init_time = smdk2413_init_time,
MACHINE_END