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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) 2007 Simtec Electronics
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// Ben Dooks <ben@simtec.co.uk>
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//
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// Samsung S3C2443 Mobile CPU support
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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/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/serial_core.h>
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#include <linux/device.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/reboot.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 "map.h"
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#include "gpio-samsung.h"
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#include "irqs.h"
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#include <asm/irq.h>
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#include <asm/system_misc.h>
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#include "regs-s3c2443-clock.h"
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#include "rtc-core-s3c24xx.h"
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#include "gpio-core.h"
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#include "gpio-cfg.h"
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#include "gpio-cfg-helpers.h"
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#include "devs.h"
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#include "cpu.h"
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#include "adc-core.h"
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#include "s3c24xx.h"
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#include "fb-core-s3c24xx.h"
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#include "nand-core-s3c24xx.h"
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#include "spi-core-s3c24xx.h"
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static struct map_desc s3c2443_iodesc[] __initdata __maybe_unused = {
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IODESC_ENT(WATCHDOG),
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IODESC_ENT(CLKPWR),
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IODESC_ENT(TIMER),
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};
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struct bus_type s3c2443_subsys = {
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.name = "s3c2443-core",
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.dev_name = "s3c2443-core",
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};
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static struct device s3c2443_dev = {
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.bus = &s3c2443_subsys,
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};
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int __init s3c2443_init(void)
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{
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printk("S3C2443: Initialising architecture\n");
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s3c_nand_setname("s3c2412-nand");
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s3c_fb_setname("s3c2443-fb");
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s3c_adc_setname("s3c2443-adc");
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s3c_rtc_setname("s3c2443-rtc");
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/* change WDT IRQ number */
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s3c_device_wdt.resource[1].start = IRQ_S3C2443_WDT;
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s3c_device_wdt.resource[1].end = IRQ_S3C2443_WDT;
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return device_register(&s3c2443_dev);
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}
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void __init s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no)
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{
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s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
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}
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/* s3c2443_map_io
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*
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* register the standard cpu IO areas, and any passed in from the
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* machine specific initialisation.
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*/
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void __init s3c2443_map_io(void)
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{
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s3c24xx_gpiocfg_default.set_pull = s3c2443_gpio_setpull;
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s3c24xx_gpiocfg_default.get_pull = s3c2443_gpio_getpull;
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/* initialize device information early */
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s3c24xx_spi_setname("s3c2443-spi");
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iotable_init(s3c2443_iodesc, ARRAY_SIZE(s3c2443_iodesc));
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}
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/* need to register the subsystem before we actually register the device, and
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* we also need to ensure that it has been initialised before any of the
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* drivers even try to use it (even if not on an s3c2443 based system)
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* as a driver which may support both 2443 and 2440 may try and use it.
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*/
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static int __init s3c2443_core_init(void)
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{
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return subsys_system_register(&s3c2443_subsys, NULL);
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}
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core_initcall(s3c2443_core_init);
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