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kernel-ark/arch/arm/mach-ixp4xx/dsmg600-setup.c
Kees Cook 24ed960abf treewide: Switch DEFINE_TIMER callbacks to struct timer_list * 
This changes all DEFINE_TIMER() callbacks to use a struct timer_list
pointer instead of unsigned long. Since the data argument has already been
removed, none of these callbacks are using their argument currently, so
this renames the argument to "unused".

Done using the following semantic patch:

@match_define_timer@
declarer name DEFINE_TIMER;
identifier _timer, _callback;
@@

 DEFINE_TIMER(_timer, _callback);

@change_callback depends on match_define_timer@
identifier match_define_timer._callback;
type _origtype;
identifier _origarg;
@@

 void
-_callback(_origtype _origarg)
+_callback(struct timer_list *unused)
 { ... }

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:05 -08:00

306 lines
7.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/*
* DSM-G600 board-setup
*
* Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
* Copyright (C) 2006 Tower Technologies
*
* based on ixdp425-setup.c:
* Copyright (C) 2003-2004 MontaVista Software, Inc.
* based on nslu2-power.c:
* Copyright (C) 2005 Tower Technologies
* based on nslu2-io.c:
* Copyright (C) 2004 Karen Spearel
*
* Author: Alessandro Zummo <a.zummo@towertech.it>
* Author: Michael Westerhof <mwester@dls.net>
* Author: Rod Whitby <rod@whitby.id.au>
* Maintainers: http://www.nslu2-linux.org/
*/
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/leds.h>
#include <linux/reboot.h>
#include <linux/i2c.h>
#include <linux/gpio/machine.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/time.h>
#define DSMG600_SDA_PIN 5
#define DSMG600_SCL_PIN 4
/* DSM-G600 Timer Setting */
#define DSMG600_FREQ 66000000
/* Buttons */
#define DSMG600_PB_GPIO 15 /* power button */
#define DSMG600_RB_GPIO 3 /* reset button */
/* Power control */
#define DSMG600_PO_GPIO 2 /* power off */
/* LEDs */
#define DSMG600_LED_PWR_GPIO 0
#define DSMG600_LED_WLAN_GPIO 14
static struct flash_platform_data dsmg600_flash_data = {
.map_name = "cfi_probe",
.width = 2,
};
static struct resource dsmg600_flash_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device dsmg600_flash = {
.name = "IXP4XX-Flash",
.id = 0,
.dev.platform_data = &dsmg600_flash_data,
.num_resources = 1,
.resource = &dsmg600_flash_resource,
};
static struct gpiod_lookup_table dsmg600_i2c_gpiod_table = {
.dev_id = "i2c-gpio",
.table = {
GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SDA_PIN,
NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SCL_PIN,
NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
},
};
static struct platform_device dsmg600_i2c_gpio = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = NULL,
},
};
static struct i2c_board_info __initdata dsmg600_i2c_board_info [] = {
{
I2C_BOARD_INFO("pcf8563", 0x51),
},
};
static struct gpio_led dsmg600_led_pins[] = {
{
.name = "dsmg600:green:power",
.gpio = DSMG600_LED_PWR_GPIO,
},
{
.name = "dsmg600:green:wlan",
.gpio = DSMG600_LED_WLAN_GPIO,
.active_low = true,
},
};
static struct gpio_led_platform_data dsmg600_led_data = {
.num_leds = ARRAY_SIZE(dsmg600_led_pins),
.leds = dsmg600_led_pins,
};
static struct platform_device dsmg600_leds = {
.name = "leds-gpio",
.id = -1,
.dev.platform_data = &dsmg600_led_data,
};
static struct resource dsmg600_uart_resources[] = {
{
.start = IXP4XX_UART1_BASE_PHYS,
.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
},
{
.start = IXP4XX_UART2_BASE_PHYS,
.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
}
};
static struct plat_serial8250_port dsmg600_uart_data[] = {
{
.mapbase = IXP4XX_UART1_BASE_PHYS,
.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART1,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{
.mapbase = IXP4XX_UART2_BASE_PHYS,
.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART2,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{ }
};
static struct platform_device dsmg600_uart = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev.platform_data = dsmg600_uart_data,
.num_resources = ARRAY_SIZE(dsmg600_uart_resources),
.resource = dsmg600_uart_resources,
};
static struct platform_device *dsmg600_devices[] __initdata = {
&dsmg600_i2c_gpio,
&dsmg600_flash,
&dsmg600_leds,
};
static void dsmg600_power_off(void)
{
/* enable the pwr cntl and drive it high */
gpio_direction_output(DSMG600_PO_GPIO, 1);
}
/* This is used to make sure the power-button pusher is serious. The button
* must be held until the value of this counter reaches zero.
*/
static int power_button_countdown;
/* Must hold the button down for at least this many counts to be processed */
#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
static void dsmg600_power_handler(struct timer_list *unused);
static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler);
static void dsmg600_power_handler(struct timer_list *unused)
{
/* This routine is called twice per second to check the
* state of the power button.
*/
if (gpio_get_value(DSMG600_PB_GPIO)) {
/* IO Pin is 1 (button pushed) */
if (power_button_countdown > 0)
power_button_countdown--;
} else {
/* Done on button release, to allow for auto-power-on mods. */
if (power_button_countdown == 0) {
/* Signal init to do the ctrlaltdel action,
* this will bypass init if it hasn't started
* and do a kernel_restart.
*/
ctrl_alt_del();
/* Change the state of the power LED to "blink" */
gpio_set_value(DSMG600_LED_PWR_GPIO, 0);
} else {
power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
}
}
mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
}
static irqreturn_t dsmg600_reset_handler(int irq, void *dev_id)
{
/* This is the paper-clip reset, it shuts the machine down directly. */
machine_power_off();
return IRQ_HANDLED;
}
static void __init dsmg600_timer_init(void)
{
/* The xtal on this machine is non-standard. */
ixp4xx_timer_freq = DSMG600_FREQ;
/* Call standard timer_init function. */
ixp4xx_timer_init();
}
static int __init dsmg600_gpio_init(void)
{
if (!machine_is_dsmg600())
return 0;
gpio_request(DSMG600_RB_GPIO, "reset button");
if (request_irq(gpio_to_irq(DSMG600_RB_GPIO), &dsmg600_reset_handler,
IRQF_TRIGGER_LOW, "DSM-G600 reset button", NULL) < 0) {
printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
gpio_to_irq(DSMG600_RB_GPIO));
}
/*
* The power button on the D-Link DSM-G600 is on GPIO 15, but
* it cannot handle interrupts on that GPIO line. So we'll
* have to poll it with a kernel timer.
*/
/* Make sure that the power button GPIO is set up as an input */
gpio_request(DSMG600_PB_GPIO, "power button");
gpio_direction_input(DSMG600_PB_GPIO);
/* Request poweroff GPIO line */
gpio_request(DSMG600_PO_GPIO, "power off button");
/* Set the initial value for the power button IRQ handler */
power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
return 0;
}
device_initcall(dsmg600_gpio_init);
static void __init dsmg600_init(void)
{
ixp4xx_sys_init();
/* Make sure that GPIO14 and GPIO15 are not used as clocks */
*IXP4XX_GPIO_GPCLKR = 0;
dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
dsmg600_flash_resource.end =
IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
gpiod_add_lookup_table(&dsmg600_i2c_gpiod_table);
i2c_register_board_info(0, dsmg600_i2c_board_info,
ARRAY_SIZE(dsmg600_i2c_board_info));
/* The UART is required on the DSM-G600 (Redboot cannot use the
* NIC) -- do it here so that it does *not* get removed if
* platform_add_devices fails!
*/
(void)platform_device_register(&dsmg600_uart);
platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
pm_power_off = dsmg600_power_off;
}
MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
/* Maintainer: www.nslu2-linux.org */
.atag_offset = 0x100,
.map_io = ixp4xx_map_io,
.init_early = ixp4xx_init_early,
.init_irq = ixp4xx_init_irq,
.init_time = dsmg600_timer_init,
.init_machine = dsmg600_init,
#if defined(CONFIG_PCI)
.dma_zone_size = SZ_64M,
#endif
.restart = ixp4xx_restart,
MACHINE_END
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