cregit-Linux how code gets into the kernel

Release 4.11 arch/arm/mach-sa1100/hackkit.c

/*
 * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King55100.00%1100.00%
Total55100.00%1100.00%

/** * 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 */ }

Contributors

PersonTokensPropCommitsCommitProp
Russell King18100.00%1100.00%
Total18100.00%1100.00%

/* * 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 }

Contributors

PersonTokensPropCommitsCommitProp
Russell King20100.00%1100.00%
Total20100.00%1100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King36100.00%1100.00%
Total36100.00%1100.00%

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); }

Contributors

PersonTokensPropCommitsCommitProp
Russell King2076.92%375.00%
Bryan Wu623.08%125.00%
Total26100.00%4100.00%

/********************************************************************** * 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

Overall Contributors

PersonTokensPropCommitsCommitProp
Russell King49377.15%857.14%
Bryan Wu10917.06%17.14%
Deepak Saxena172.66%17.14%
Rob Herring111.72%17.14%
Shawn Guo50.78%17.14%
Stephen Warren20.31%17.14%
Nico Pitre20.31%17.14%
Total639100.00%14100.00%
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