diff options
Diffstat (limited to 'arch/arm/mach-sa1100/hackkit.c')
| -rw-r--r-- | arch/arm/mach-sa1100/hackkit.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/hackkit.c b/arch/arm/mach-sa1100/hackkit.c new file mode 100644 index 000000000..643d5f2d9 --- /dev/null +++ b/arch/arm/mach-sa1100/hackkit.c @@ -0,0 +1,236 @@ +/* + * linux/arch/arm/mach-sa1100/hackkit.c + * + * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de> + * + * This file contains all HackKit tweaks. Based on original work from + * Nicolas Pitre's assabet fixes + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/tty.h> +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/cpufreq.h> +#include <linux/platform_data/sa11x0-serial.h> +#include <linux/serial_core.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/tty.h> +#include <linux/gpio.h> +#include <linux/leds.h> +#include <linux/platform_device.h> + +#include <asm/mach-types.h> +#include <asm/setup.h> +#include <asm/page.h> +#include <asm/pgtable.h> + +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <mach/hardware.h> +#include <mach/irqs.h> + +#include "generic.h" + +/********************************************************************** + * prototypes + */ + +/* init funcs */ +static void __init hackkit_map_io(void); + +static u_int hackkit_get_mctrl(struct uart_port *port); +static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl); +static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate); + +/********************************************************************** + * global data + */ + +/********************************************************************** + * static data + */ + +static struct map_desc hackkit_io_desc[] __initdata = { + { /* Flash bank 0 */ + .virtual = 0xe8000000, + .pfn = __phys_to_pfn(0x00000000), + .length = 0x01000000, + .type = MT_DEVICE + }, +}; + +static struct sa1100_port_fns hackkit_port_fns __initdata = { + .set_mctrl = hackkit_set_mctrl, + .get_mctrl = hackkit_get_mctrl, + .pm = hackkit_uart_pm, +}; + +/********************************************************************** + * Static functions + */ + +static void __init hackkit_map_io(void) +{ + sa1100_map_io(); + iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc)); + + sa1100_register_uart_fns(&hackkit_port_fns); + sa1100_register_uart(0, 1); /* com port */ + sa1100_register_uart(1, 2); + sa1100_register_uart(2, 3); /* radio module */ + + Ser1SDCR0 |= SDCR0_SUS; +} + +/** + * hackkit_uart_pm - powermgmt callback function for system 3 UART + * @port: uart port structure + * @state: pm state + * @oldstate: old pm state + * + */ +static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate) +{ + /* TODO: switch on/off uart in powersave mode */ +} + +/* + * Note! this can be called from IRQ context. + * FIXME: No modem ctrl lines yet. + */ +static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl) +{ +#if 0 + if (port->mapbase == _Ser1UTCR0) { + u_int set = 0, clear = 0; + + if (mctrl & TIOCM_RTS) + set |= PT_CTRL2_RS1_RTS; + else + clear |= PT_CTRL2_RS1_RTS; + + if (mctrl & TIOCM_DTR) + set |= PT_CTRL2_RS1_DTR; + else + clear |= PT_CTRL2_RS1_DTR; + + PTCTRL2_clear(clear); + PTCTRL2_set(set); + } +#endif +} + +static u_int hackkit_get_mctrl(struct uart_port *port) +{ + u_int ret = 0; +#if 0 + u_int irqsr = PT_IRQSR; + + /* need 2 reads to read current value */ + irqsr = PT_IRQSR; + + /* TODO: check IRQ source register for modem/com + status lines and set them correctly. */ +#endif + + ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; + + return ret; +} + +static struct mtd_partition hackkit_partitions[] = { + { + .name = "BLOB", + .size = 0x00040000, + .offset = 0x00000000, + .mask_flags = MTD_WRITEABLE, /* force read-only */ + }, { + .name = "config", + .size = 0x00040000, + .offset = MTDPART_OFS_APPEND, + }, { + .name = "kernel", + .size = 0x00100000, + .offset = MTDPART_OFS_APPEND, + }, { + .name = "initrd", + .size = 0x00180000, + .offset = MTDPART_OFS_APPEND, + }, { + .name = "rootfs", + .size = 0x700000, + .offset = MTDPART_OFS_APPEND, + }, { + .name = "data", + .size = MTDPART_SIZ_FULL, + .offset = MTDPART_OFS_APPEND, + } +}; + +static struct flash_platform_data hackkit_flash_data = { + .map_name = "cfi_probe", + .parts = hackkit_partitions, + .nr_parts = ARRAY_SIZE(hackkit_partitions), +}; + +static struct resource hackkit_flash_resource = + DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); + +/* LEDs */ +struct gpio_led hackkit_gpio_leds[] = { + { + .name = "hackkit:red", + .default_trigger = "cpu0", + .gpio = 22, + }, + { + .name = "hackkit:green", + .default_trigger = "heartbeat", + .gpio = 23, + }, +}; + +static struct gpio_led_platform_data hackkit_gpio_led_info = { + .leds = hackkit_gpio_leds, + .num_leds = ARRAY_SIZE(hackkit_gpio_leds), +}; + +static struct platform_device hackkit_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &hackkit_gpio_led_info, + } +}; + +static void __init hackkit_init(void) +{ + sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1); + platform_device_register(&hackkit_leds); +} + +/********************************************************************** + * Exported Functions + */ + +MACHINE_START(HACKKIT, "HackKit Cpu Board") + .atag_offset = 0x100, + .map_io = hackkit_map_io, + .nr_irqs = SA1100_NR_IRQS, + .init_irq = sa1100_init_irq, + .init_time = sa1100_timer_init, + .init_machine = hackkit_init, + .init_late = sa11x0_init_late, + .restart = sa11x0_restart, +MACHINE_END |