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292 lines
6.0 KiB
292 lines
6.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* GPR board platform device registration (Au1550) |
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* |
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* Copyright (C) 2010 Wolfgang Grandegger <[email protected]> |
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*/ |
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#include <linux/delay.h> |
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#include <linux/init.h> |
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#include <linux/interrupt.h> |
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#include <linux/kernel.h> |
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#include <linux/platform_device.h> |
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#include <linux/pm.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/mtd/physmap.h> |
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#include <linux/leds.h> |
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#include <linux/gpio.h> |
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#include <linux/i2c.h> |
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#include <linux/platform_data/i2c-gpio.h> |
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#include <linux/gpio/machine.h> |
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#include <asm/bootinfo.h> |
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#include <asm/idle.h> |
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#include <asm/reboot.h> |
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#include <asm/setup.h> |
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#include <asm/mach-au1x00/au1000.h> |
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#include <asm/mach-au1x00/gpio-au1000.h> |
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#include <prom.h> |
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const char *get_system_type(void) |
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{ |
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return "GPR"; |
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} |
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void prom_putchar(char c) |
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{ |
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alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); |
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} |
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static void gpr_reset(char *c) |
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{ |
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/* switch System-LED to orange (red# and green# on) */ |
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alchemy_gpio_direction_output(4, 0); |
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alchemy_gpio_direction_output(5, 0); |
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/* trigger watchdog to reset board in 200ms */ |
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printk(KERN_EMERG "Triggering watchdog soft reset...\n"); |
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raw_local_irq_disable(); |
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alchemy_gpio_direction_output(1, 0); |
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udelay(1); |
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alchemy_gpio_set_value(1, 1); |
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while (1) |
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cpu_wait(); |
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} |
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static void gpr_power_off(void) |
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{ |
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while (1) |
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cpu_wait(); |
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} |
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void __init board_setup(void) |
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{ |
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printk(KERN_INFO "Trapeze ITS GPR board\n"); |
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pm_power_off = gpr_power_off; |
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_machine_halt = gpr_power_off; |
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_machine_restart = gpr_reset; |
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/* Enable UART1/3 */ |
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alchemy_uart_enable(AU1000_UART3_PHYS_ADDR); |
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alchemy_uart_enable(AU1000_UART1_PHYS_ADDR); |
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/* Take away Reset of UMTS-card */ |
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alchemy_gpio_direction_output(215, 1); |
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} |
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/* |
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* Watchdog |
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*/ |
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static struct resource gpr_wdt_resource[] = { |
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[0] = { |
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.start = 1, |
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.end = 1, |
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.name = "gpr-adm6320-wdt", |
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.flags = IORESOURCE_IRQ, |
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} |
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}; |
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static struct platform_device gpr_wdt_device = { |
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.name = "adm6320-wdt", |
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.id = 0, |
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.num_resources = ARRAY_SIZE(gpr_wdt_resource), |
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.resource = gpr_wdt_resource, |
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}; |
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/* |
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* FLASH |
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* |
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* 0x00000000-0x00200000 : "kernel" |
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* 0x00200000-0x00a00000 : "rootfs" |
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* 0x01d00000-0x01f00000 : "config" |
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* 0x01c00000-0x01d00000 : "yamon" |
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* 0x01d00000-0x01d40000 : "yamon env vars" |
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* 0x00000000-0x00a00000 : "kernel+rootfs" |
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*/ |
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static struct mtd_partition gpr_mtd_partitions[] = { |
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{ |
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.name = "kernel", |
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.size = 0x00200000, |
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.offset = 0, |
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}, |
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{ |
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.name = "rootfs", |
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.size = 0x00800000, |
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.offset = MTDPART_OFS_APPEND, |
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.mask_flags = MTD_WRITEABLE, |
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}, |
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{ |
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.name = "config", |
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.size = 0x00200000, |
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.offset = 0x01d00000, |
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}, |
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{ |
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.name = "yamon", |
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.size = 0x00100000, |
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.offset = 0x01c00000, |
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}, |
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{ |
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.name = "yamon env vars", |
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.size = 0x00040000, |
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.offset = MTDPART_OFS_APPEND, |
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}, |
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{ |
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.name = "kernel+rootfs", |
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.size = 0x00a00000, |
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.offset = 0, |
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}, |
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}; |
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static struct physmap_flash_data gpr_flash_data = { |
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.width = 4, |
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.nr_parts = ARRAY_SIZE(gpr_mtd_partitions), |
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.parts = gpr_mtd_partitions, |
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}; |
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static struct resource gpr_mtd_resource = { |
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.start = 0x1e000000, |
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.end = 0x1fffffff, |
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.flags = IORESOURCE_MEM, |
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}; |
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static struct platform_device gpr_mtd_device = { |
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.name = "physmap-flash", |
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.dev = { |
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.platform_data = &gpr_flash_data, |
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}, |
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.num_resources = 1, |
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.resource = &gpr_mtd_resource, |
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}; |
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/* |
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* LEDs |
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*/ |
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static const struct gpio_led gpr_gpio_leds[] = { |
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{ /* green */ |
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.name = "gpr:green", |
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.gpio = 4, |
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.active_low = 1, |
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}, |
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{ /* red */ |
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.name = "gpr:red", |
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.gpio = 5, |
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.active_low = 1, |
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} |
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}; |
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static struct gpio_led_platform_data gpr_led_data = { |
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.num_leds = ARRAY_SIZE(gpr_gpio_leds), |
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.leds = gpr_gpio_leds, |
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}; |
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static struct platform_device gpr_led_devices = { |
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.name = "leds-gpio", |
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.id = -1, |
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.dev = { |
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.platform_data = &gpr_led_data, |
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} |
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}; |
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/* |
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* I2C |
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*/ |
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static struct gpiod_lookup_table gpr_i2c_gpiod_table = { |
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.dev_id = "i2c-gpio", |
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.table = { |
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/* |
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* This should be on "GPIO2" which has base at 200 so |
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* the global numbers 209 and 210 should correspond to |
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* local offsets 9 and 10. |
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*/ |
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GPIO_LOOKUP_IDX("alchemy-gpio2", 9, NULL, 0, |
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GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP_IDX("alchemy-gpio2", 10, NULL, 1, |
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GPIO_ACTIVE_HIGH), |
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}, |
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}; |
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static struct i2c_gpio_platform_data gpr_i2c_data = { |
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/* |
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* The open drain mode is hardwired somewhere or an electrical |
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* property of the alchemy GPIO controller. |
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*/ |
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.sda_is_open_drain = 1, |
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.scl_is_open_drain = 1, |
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.udelay = 2, /* ~100 kHz */ |
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.timeout = HZ, |
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}; |
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static struct platform_device gpr_i2c_device = { |
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.name = "i2c-gpio", |
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.id = -1, |
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.dev.platform_data = &gpr_i2c_data, |
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}; |
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static struct i2c_board_info gpr_i2c_info[] __initdata = { |
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{ |
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I2C_BOARD_INFO("lm83", 0x18), |
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} |
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}; |
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static struct resource alchemy_pci_host_res[] = { |
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[0] = { |
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.start = AU1500_PCI_PHYS_ADDR, |
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.end = AU1500_PCI_PHYS_ADDR + 0xfff, |
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.flags = IORESOURCE_MEM, |
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}, |
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}; |
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static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) |
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{ |
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if ((slot == 0) && (pin == 1)) |
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return AU1550_PCI_INTA; |
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else if ((slot == 0) && (pin == 2)) |
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return AU1550_PCI_INTB; |
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return 0xff; |
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} |
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static struct alchemy_pci_platdata gpr_pci_pd = { |
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.board_map_irq = gpr_map_pci_irq, |
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.pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | |
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PCI_CONFIG_CH | |
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#if defined(__MIPSEB__) |
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PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, |
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#else |
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0, |
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#endif |
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}; |
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static struct platform_device gpr_pci_host_dev = { |
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.dev.platform_data = &gpr_pci_pd, |
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.name = "alchemy-pci", |
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.id = 0, |
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.num_resources = ARRAY_SIZE(alchemy_pci_host_res), |
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.resource = alchemy_pci_host_res, |
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}; |
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static struct platform_device *gpr_devices[] __initdata = { |
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&gpr_wdt_device, |
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&gpr_mtd_device, |
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&gpr_i2c_device, |
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&gpr_led_devices, |
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}; |
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static int __init gpr_pci_init(void) |
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{ |
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return platform_device_register(&gpr_pci_host_dev); |
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} |
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/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */ |
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arch_initcall(gpr_pci_init); |
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static int __init gpr_dev_init(void) |
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{ |
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gpiod_add_lookup_table(&gpr_i2c_gpiod_table); |
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i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info)); |
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return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices)); |
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} |
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device_initcall(gpr_dev_init);
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