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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>
162 lines
3.9 KiB
C
162 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// linux/arch/arm/mach-s3c2440/mach-nexcoder.c
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//
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// Copyright (c) 2004 Nex Vision
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// Guillaume GOURAT <guillaume.gourat@nexvision.tv>
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//
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// Modifications:
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// 15-10-2004 GG Created initial version
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// 12-03-2005 BJD Updated for release
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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/string.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 <linux/mtd/map.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/setup.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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//#include <asm/debug-ll.h>
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#include "regs-gpio.h"
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#include "gpio-samsung.h"
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#include <linux/platform_data/i2c-s3c2410.h>
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#include "gpio-cfg.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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static struct map_desc nexcoder_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_RXTRIG12 | S3C2410_UFCON_FIFOMODE
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static struct s3c2410_uartcfg nexcoder_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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/* NOR Flash on NexVision NexCoder 2440 board */
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static struct resource nexcoder_nor_resource[] = {
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[0] = DEFINE_RES_MEM(S3C2410_CS0, SZ_8M),
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};
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static struct map_info nexcoder_nor_map = {
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.bankwidth = 2,
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};
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static struct platform_device nexcoder_device_nor = {
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.name = "mtd-flash",
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.id = -1,
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.num_resources = ARRAY_SIZE(nexcoder_nor_resource),
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.resource = nexcoder_nor_resource,
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.dev =
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{
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.platform_data = &nexcoder_nor_map,
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}
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};
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/* Standard Nexcoder devices */
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static struct platform_device *nexcoder_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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&s3c_device_rtc,
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&s3c_device_camif,
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&s3c_device_spi0,
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&s3c_device_spi1,
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&nexcoder_device_nor,
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};
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static void __init nexcoder_sensorboard_init(void)
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{
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/* Initialize SCCB bus */
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gpio_request_one(S3C2410_GPE(14), GPIOF_OUT_INIT_HIGH, NULL);
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gpio_free(S3C2410_GPE(14)); /* IICSCL */
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gpio_request_one(S3C2410_GPE(15), GPIOF_OUT_INIT_HIGH, NULL);
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gpio_free(S3C2410_GPE(15)); /* IICSDA */
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/* Power up the sensor board */
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gpio_request_one(S3C2410_GPF(1), GPIOF_OUT_INIT_HIGH, NULL);
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gpio_free(S3C2410_GPF(1)); /* CAM_GPIO7 => nLDO_PWRDN */
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gpio_request_one(S3C2410_GPF(2), GPIOF_OUT_INIT_LOW, NULL);
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gpio_free(S3C2410_GPF(2)); /* CAM_GPIO6 => CAM_PWRDN */
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}
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static void __init nexcoder_map_io(void)
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{
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s3c24xx_init_io(nexcoder_iodesc, ARRAY_SIZE(nexcoder_iodesc));
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s3c24xx_init_uarts(nexcoder_uartcfgs, ARRAY_SIZE(nexcoder_uartcfgs));
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s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
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nexcoder_sensorboard_init();
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}
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static void __init nexcoder_init_time(void)
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{
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s3c2440_init_clocks(12000000);
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s3c24xx_timer_init();
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}
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static void __init nexcoder_init(void)
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{
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s3c_i2c0_set_platdata(NULL);
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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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platform_add_devices(nexcoder_devices, ARRAY_SIZE(nexcoder_devices));
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};
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MACHINE_START(NEXCODER_2440, "NexVision - Nexcoder 2440")
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/* Maintainer: Guillaume GOURAT <guillaume.gourat@nexvision.tv> */
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.atag_offset = 0x100,
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.nr_irqs = NR_IRQS_S3C2440,
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.map_io = nexcoder_map_io,
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.init_machine = nexcoder_init,
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.init_irq = s3c2440_init_irq,
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.init_time = nexcoder_init_time,
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MACHINE_END
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