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Merge branch 'ixp4-cleanup' into devel

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This commit is contained in:
Linus Walleij 2013-09-27 14:46:56 +02:00
commit 060c83fa0e
9 changed files with 160 additions and 117 deletions
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49
arch/arm/mach-ixp4xx/common.c
View file

@ -81,6 +81,44 @@ void __init ixp4xx_map_io(void)
iotable_init(ixp4xx_io_desc, ARRAY_SIZE(ixp4xx_io_desc));
}
/*
* GPIO-functions
*/
/*
* The following converted to the real HW bits the gpio_line_config
*/
/* GPIO pin types */
#define IXP4XX_GPIO_OUT 0x1
#define IXP4XX_GPIO_IN 0x2
/* GPIO signal types */
#define IXP4XX_GPIO_LOW 0
#define IXP4XX_GPIO_HIGH 1
/* GPIO Clocks */
#define IXP4XX_GPIO_CLK_0 14
#define IXP4XX_GPIO_CLK_1 15
static void gpio_line_config(u8 line, u32 direction)
{
if (direction == IXP4XX_GPIO_IN)
*IXP4XX_GPIO_GPOER |= (1 << line);
else
*IXP4XX_GPIO_GPOER &= ~(1 << line);
}
static void gpio_line_get(u8 line, int *value)
{
*value = (*IXP4XX_GPIO_GPINR >> line) & 0x1;
}
static void gpio_line_set(u8 line, int value)
{
if (value == IXP4XX_GPIO_HIGH)
*IXP4XX_GPIO_GPOUTR |= (1 << line);
else if (value == IXP4XX_GPIO_LOW)
*IXP4XX_GPIO_GPOUTR &= ~(1 << line);
}
/*************************************************************************
* IXP4xx chipset IRQ handling
@ -117,17 +155,6 @@ static int ixp4xx_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
return -EINVAL;
}
int irq_to_gpio(unsigned int irq)
{
int gpio = (irq < 32) ? irq2gpio[irq] : -EINVAL;
if (gpio == -1)
return -EINVAL;
return gpio;
}
EXPORT_SYMBOL(irq_to_gpio);
static int ixp4xx_set_irq_type(struct irq_data *d, unsigned int type)
{
int line = irq2gpio[d->irq];

65
arch/arm/mach-ixp4xx/dsmg600-setup.c
View file

@ -26,6 +26,7 @@
#include <linux/reboot.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
@ -161,11 +162,8 @@ static struct platform_device *dsmg600_devices[] __initdata = {
static void dsmg600_power_off(void)
{
/* enable the pwr cntl gpio */
gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
/* poweroff */
gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
/* 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
@ -202,7 +200,7 @@ static void dsmg600_power_handler(unsigned long data)
ctrl_alt_del();
/* Change the state of the power LED to "blink" */
gpio_line_set(DSMG600_LED_PWR_GPIO, IXP4XX_GPIO_LOW);
gpio_set_value(DSMG600_LED_PWR_GPIO, 0);
} else {
power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
}
@ -228,6 +226,40 @@ static void __init dsmg600_timer_init(void)
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_DISABLED | 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();
@ -251,27 +283,6 @@ static void __init dsmg600_init(void)
platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
pm_power_off = dsmg600_power_off;
if (request_irq(gpio_to_irq(DSMG600_RB_GPIO), &dsmg600_reset_handler,
IRQF_DISABLED | 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_line_config(DSMG600_PB_GPIO, IXP4XX_GPIO_IN);
/* 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));
}
MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")

39
arch/arm/mach-ixp4xx/include/mach/platform.h
View file

@ -131,44 +131,5 @@ struct pci_sys_data;
extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
extern struct pci_ops ixp4xx_ops;
/*
* GPIO-functions
*/
/*
* The following converted to the real HW bits the gpio_line_config
*/
/* GPIO pin types */
#define IXP4XX_GPIO_OUT 0x1
#define IXP4XX_GPIO_IN 0x2
/* GPIO signal types */
#define IXP4XX_GPIO_LOW 0
#define IXP4XX_GPIO_HIGH 1
/* GPIO Clocks */
#define IXP4XX_GPIO_CLK_0 14
#define IXP4XX_GPIO_CLK_1 15
static inline void gpio_line_config(u8 line, u32 direction)
{
if (direction == IXP4XX_GPIO_IN)
*IXP4XX_GPIO_GPOER |= (1 << line);
else
*IXP4XX_GPIO_GPOER &= ~(1 << line);
}
static inline void gpio_line_get(u8 line, int *value)
{
*value = (*IXP4XX_GPIO_GPINR >> line) & 0x1;
}
static inline void gpio_line_set(u8 line, int value)
{
if (value == IXP4XX_GPIO_HIGH)
*IXP4XX_GPIO_GPOUTR |= (1 << line);
else if (value == IXP4XX_GPIO_LOW)
*IXP4XX_GPIO_GPOUTR &= ~(1 << line);
}
#endif // __ASSEMBLY__

8
arch/arm/mach-ixp4xx/ixdp425-setup.c
View file

@ -20,6 +20,7 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
@ -80,10 +81,10 @@ ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
if (ctrl & NAND_CTRL_CHANGE) {
if (ctrl & NAND_NCE) {
gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_LOW);
gpio_set_value(IXDP425_NAND_NCE_PIN, 0);
udelay(5);
} else
gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_HIGH);
gpio_set_value(IXDP425_NAND_NCE_PIN, 1);
offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
@ -227,7 +228,8 @@ static void __init ixdp425_init(void)
ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
ixdp425_flash_nand_resource.end = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
gpio_line_config(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_OUT);
gpio_request(IXDP425_NAND_NCE_PIN, "NAND NCE pin");
gpio_direction_output(IXDP425_NAND_NCE_PIN, 0);
/* Configure expansion bus for NAND Flash */
*IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |

49
arch/arm/mach-ixp4xx/nas100d-setup.c
View file

@ -184,11 +184,8 @@ static void nas100d_power_off(void)
{
/* This causes the box to drop the power and go dead. */
/* enable the pwr cntl gpio */
gpio_line_config(NAS100D_PO_GPIO, IXP4XX_GPIO_OUT);
/* do the deed */
gpio_line_set(NAS100D_PO_GPIO, IXP4XX_GPIO_HIGH);
/* enable the pwr cntl gpio and assert power off */
gpio_direction_output(NAS100D_PO_GPIO, 1);
}
/* This is used to make sure the power-button pusher is serious. The button
@ -225,7 +222,7 @@ static void nas100d_power_handler(unsigned long data)
ctrl_alt_del();
/* Change the state of the power LED to "blink" */
gpio_line_set(NAS100D_LED_PWR_GPIO, IXP4XX_GPIO_LOW);
gpio_set_value(NAS100D_LED_PWR_GPIO, 0);
} else {
power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
}
@ -242,6 +239,33 @@ static irqreturn_t nas100d_reset_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int __init nas100d_gpio_init(void)
{
if (!machine_is_nas100d())
return 0;
/*
* The power button on the Iomega NAS100d is on GPIO 14, but
* it cannot handle interrupts on that GPIO line. So we'll
* have to poll it with a kernel timer.
*/
/* Request the power off GPIO */
gpio_request(NAS100D_PO_GPIO, "power off");
/* Make sure that the power button GPIO is set up as an input */
gpio_request(NAS100D_PB_GPIO, "power button");
gpio_direction_input(NAS100D_PB_GPIO);
/* Set the initial value for the power button IRQ handler */
power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
mod_timer(&nas100d_power_timer, jiffies + msecs_to_jiffies(500));
return 0;
}
device_initcall(nas100d_gpio_init);
static void __init nas100d_init(void)
{
uint8_t __iomem *f;
@ -278,19 +302,6 @@ static void __init nas100d_init(void)
gpio_to_irq(NAS100D_RB_GPIO));
}
/* The power button on the Iomega NAS100d is on GPIO 14, 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_line_config(NAS100D_PB_GPIO, IXP4XX_GPIO_IN);
/* Set the initial value for the power button IRQ handler */
power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
mod_timer(&nas100d_power_timer, jiffies + msecs_to_jiffies(500));
/*
* Map in a portion of the flash and read the MAC address.
* Since it is stored in BE in the flash itself, we need to

17
arch/arm/mach-ixp4xx/nslu2-setup.c
View file

@ -197,11 +197,8 @@ static void nslu2_power_off(void)
{
/* This causes the box to drop the power and go dead. */
/* enable the pwr cntl gpio */
gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
/* do the deed */
gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
/* enable the pwr cntl gpio and assert power off */
gpio_direction_output(NSLU2_PO_GPIO, 1);
}
static irqreturn_t nslu2_power_handler(int irq, void *dev_id)
@ -223,6 +220,16 @@ static irqreturn_t nslu2_reset_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int __init nslu2_gpio_init(void)
{
if (!machine_is_nslu2())
return 0;
/* Request the power off GPIO */
return gpio_request(NSLU2_PO_GPIO, "power off");
}
device_initcall(nslu2_gpio_init);
static void __init nslu2_timer_init(void)
{
/* The xtal on this machine is non-standard. */

25
drivers/input/misc/ixp4xx-beeper.c
View file

@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
@ -35,15 +36,12 @@ static void ixp4xx_spkr_control(unsigned int pin, unsigned int count)
spin_lock_irqsave(&beep_lock, flags);
if (count) {
gpio_line_config(pin, IXP4XX_GPIO_OUT);
gpio_line_set(pin, IXP4XX_GPIO_LOW);
if (count) {
gpio_direction_output(pin, 0);
*IXP4XX_OSRT2 = (count & ~IXP4XX_OST_RELOAD_MASK) | IXP4XX_OST_ENABLE;
} else {
gpio_line_config(pin, IXP4XX_GPIO_IN);
gpio_line_set(pin, IXP4XX_GPIO_HIGH);
gpio_direction_output(pin, 1);
gpio_direction_input(pin);
*IXP4XX_OSRT2 = 0;
}
@ -78,11 +76,13 @@ static int ixp4xx_spkr_event(struct input_dev *dev, unsigned int type, unsigned
static irqreturn_t ixp4xx_spkr_interrupt(int irq, void *dev_id)
{
unsigned int pin = (unsigned int) dev_id;
/* clear interrupt */
*IXP4XX_OSST = IXP4XX_OSST_TIMER_2_PEND;
/* flip the beeper output */
*IXP4XX_GPIO_GPOUTR ^= (1 << (unsigned int) dev_id);
gpio_set_value(pin, !gpio_get_value(pin));
return IRQ_HANDLED;
}
@ -110,11 +110,15 @@ static int ixp4xx_spkr_probe(struct platform_device *dev)
input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
input_dev->event = ixp4xx_spkr_event;
err = gpio_request(dev->id, "ixp4-beeper");
if (err)
goto err_free_device;
err = request_irq(IRQ_IXP4XX_TIMER2, &ixp4xx_spkr_interrupt,
IRQF_NO_SUSPEND, "ixp4xx-beeper",
(void *) dev->id);
if (err)
goto err_free_device;
goto err_free_gpio;
err = input_register_device(input_dev);
if (err)
@ -126,6 +130,8 @@ static int ixp4xx_spkr_probe(struct platform_device *dev)
err_free_irq:
free_irq(IRQ_IXP4XX_TIMER2, (void *)dev->id);
err_free_gpio:
gpio_free(dev->id);
err_free_device:
input_free_device(input_dev);
@ -144,6 +150,7 @@ static int ixp4xx_spkr_remove(struct platform_device *dev)
ixp4xx_spkr_control(pin, 0);
free_irq(IRQ_IXP4XX_TIMER2, (void *)dev->id);
gpio_free(dev->id);
return 0;
}

9
drivers/ptp/ptp_ixp46x.c
View file

@ -259,8 +259,15 @@ static struct ixp_clock ixp_clock;
static int setup_interrupt(int gpio)
{
int irq;
int err;
gpio_line_config(gpio, IXP4XX_GPIO_IN);
err = gpio_request(gpio, "ixp4-ptp");
if (err)
return err;
err = gpio_direction_input(gpio);
if (err)
return err;
irq = gpio_to_irq(gpio);

16
drivers/staging/media/lirc/lirc_serial.c
View file

@ -67,7 +67,7 @@
#include <linux/delay.h>
#include <linux/poll.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/fcntl.h>
@ -321,7 +321,7 @@ static void on(void)
* status LED and ground
*/
if (type == LIRC_NSLU2) {
gpio_line_set(NSLU2_LED_GRN, IXP4XX_GPIO_LOW);
gpio_set_value(NSLU2_LED_GRN, 0);
return;
}
#endif
@ -335,7 +335,7 @@ static void off(void)
{
#ifdef CONFIG_LIRC_SERIAL_NSLU2
if (type == LIRC_NSLU2) {
gpio_line_set(NSLU2_LED_GRN, IXP4XX_GPIO_HIGH);
gpio_set_value(NSLU2_LED_GRN, 1);
return;
}
#endif
@ -839,6 +839,16 @@ static int lirc_serial_probe(struct platform_device *dev)
{
int i, nlow, nhigh, result;
#ifdef CONFIG_LIRC_SERIAL_NSLU2
/* This GPIO is used for a LED on the NSLU2 */
result = devm_gpio_request(dev, NSLU2_LED_GRN, "lirc-serial");
if (result)
return result;
result = gpio_direction_output(NSLU2_LED_GRN, 0);
if (result)
return result;
#endif
result = request_irq(irq, irq_handler,
(share_irq ? IRQF_SHARED : 0),
LIRC_DRIVER_NAME, (void *)&hardware);