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Code

[adm5120] convert to GPIOLIB

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12571 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2008-09-12 12:41:29 +00:00
parent b25e47676f
commit 154807d30e
5 changed files with 228 additions and 259 deletions
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393
target/linux/adm5120/files-2.6.26/arch/mips/adm5120/common/gpio.c
View File

@ -1,5 +1,5 @@
/*
* ADM5120 generic GPIO API support
* ADM5120 generic GPIO API support via GPIOLIB
*
* Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
*
@ -25,60 +25,69 @@
#include <asm/mach-adm5120/adm5120_info.h>
#include <asm/mach-adm5120/adm5120_switch.h>
#define GPIO_READ(r) __raw_readl((r))
#define GPIO_WRITE(v, r) __raw_writel((v), (r))
#define GPIO_REG(r) (void __iomem *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+r)
#define GPIO_REG(r) (void __iomem *)(KSEG1ADDR(ADM5120_SWITCH_BASE) + r)
struct adm5120_gpio_line {
u32 flags;
const char *label;
int irq;
};
#define GPIO_FLAG_VALID 0x01
#define GPIO_FLAG_USED 0x02
struct led_desc {
void __iomem *reg; /* LED register address */
struct gpio1_desc {
void __iomem *reg; /* register address */
u8 iv_shift; /* shift amount for input bit */
u8 mode_shift; /* shift amount for mode bits */
};
#define LED_DESC(p, l) { \
.reg = GPIO_REG(SWITCH_REG_PORT0_LED+((p) * 4)), \
#define GPIO1_DESC(p, l) { \
.reg = GPIO_REG(SWITCH_REG_PORT0_LED + ((p) * 4)), \
.iv_shift = LED0_IV_SHIFT + (l), \
.mode_shift = (l) * 4 \
}
static struct led_desc led_table[15] = {
LED_DESC(0, 0), LED_DESC(0, 1), LED_DESC(0, 2),
LED_DESC(1, 0), LED_DESC(1, 1), LED_DESC(1, 2),
LED_DESC(2, 0), LED_DESC(2, 1), LED_DESC(2, 2),
LED_DESC(3, 0), LED_DESC(3, 1), LED_DESC(3, 2),
LED_DESC(4, 0), LED_DESC(4, 1), LED_DESC(4, 2)
static struct gpio1_desc gpio1_table[15] = {
GPIO1_DESC(0, 0), GPIO1_DESC(0, 1), GPIO1_DESC(0, 2),
GPIO1_DESC(1, 0), GPIO1_DESC(1, 1), GPIO1_DESC(1, 2),
GPIO1_DESC(2, 0), GPIO1_DESC(2, 1), GPIO1_DESC(2, 2),
GPIO1_DESC(3, 0), GPIO1_DESC(3, 1), GPIO1_DESC(3, 2),
GPIO1_DESC(4, 0), GPIO1_DESC(4, 1), GPIO1_DESC(4, 2)
};
static struct adm5120_gpio_line adm5120_gpio_map[ADM5120_GPIO_COUNT];
static u32 gpio_conf2;
/*-------------------------------------------------------------------------*/
static inline int gpio_is_invalid(unsigned gpio)
int adm5120_gpio_to_irq(unsigned gpio)
{
if ((gpio > ADM5120_GPIO_MAX) ||
(adm5120_gpio_map[gpio].flags & GPIO_FLAG_VALID) == 0)
return 1;
int ret;
return 0;
switch (gpio) {
case ADM5120_GPIO_PIN2:
ret = ADM5120_IRQ_GPIO2;
break;
case ADM5120_GPIO_PIN4:
ret = ADM5120_IRQ_GPIO4;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
EXPORT_SYMBOL(adm5120_gpio_to_irq);
static inline int gpio_is_used(unsigned gpio)
int adm5120_irq_to_gpio(unsigned irq)
{
return ((adm5120_gpio_map[gpio].flags & GPIO_FLAG_USED) != 0);
}
int ret;
/*-------------------------------------------------------------------------*/
switch (irq) {
case ADM5120_IRQ_GPIO2:
ret = ADM5120_GPIO_PIN2;
break;
case ADM5120_IRQ_GPIO4:
ret = ADM5120_GPIO_PIN4;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
EXPORT_SYMBOL(adm5120_irq_to_gpio);
/*
* Helpers for GPIO lines in GPIO_CONF0 register
@ -88,97 +97,125 @@ static inline int gpio_is_used(unsigned gpio)
#define PIN_OE(p) ((1 << GPIO_CONF0_OE_SHIFT) << p)
#define PIN_OV(p) ((1 << GPIO_CONF0_OV_SHIFT) << p)
static inline int pins_direction_input(unsigned pin)
int __adm5120_gpio0_get_value(unsigned offset)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
t = GPIO_READ(reg);
t &= ~(PIN_OE(pin));
t |= PIN_IM(pin);
GPIO_WRITE(t, reg);
return 0;
}
static inline int pins_direction_output(unsigned pin, int value)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
t = GPIO_READ(reg);
t &= ~(PIN_IM(pin) | PIN_OV(pin));
t |= PIN_OE(pin);
if (value)
t |= PIN_OV(pin);
GPIO_WRITE(t, reg);
return 0;
}
static inline int pins_get_value(unsigned pin)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
t = GPIO_READ(reg);
if ((t & PIN_IM(pin)) != 0)
t &= PIN_IV(pin);
t = __raw_readl(reg);
if ((t & PIN_IM(offset)) != 0)
t &= PIN_IV(offset);
else
t &= PIN_OV(pin);
t &= PIN_OV(offset);
return (t) ? 1 : 0;
}
EXPORT_SYMBOL(__adm5120_gpio0_get_value);
static inline void pins_set_value(unsigned pin, int value)
void __adm5120_gpio0_set_value(unsigned offset, int value)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
t = GPIO_READ(reg);
t = __raw_readl(reg);
if (value == 0)
t &= ~(PIN_OV(pin));
t &= ~(PIN_OV(offset));
else
t |= PIN_OV(pin);
t |= PIN_OV(offset);
GPIO_WRITE(t, reg);
__raw_writel(t, reg);
}
EXPORT_SYMBOL(__adm5120_gpio0_set_value);
static int adm5120_gpio0_get_value(struct gpio_chip *chip, unsigned offset)
{
return __adm5120_gpio0_get_value(offset);
}
/*
* Helpers for GPIO lines in PORTx_LED registers
*/
static inline int leds_direction_input(unsigned led)
static void adm5120_gpio0_set_value(struct gpio_chip *chip,
unsigned offset, int value)
{
__adm5120_gpio0_set_value(offset, value);
}
static int adm5120_gpio0_direction_input(struct gpio_chip *chip,
unsigned offset)
{
void __iomem **reg;
u32 t;
reg = led_table[led].reg;
t = GPIO_READ(reg);
t &= ~(LED_MODE_MASK << led_table[led].mode_shift);
GPIO_WRITE(t, reg);
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
t = __raw_readl(reg);
t &= ~(PIN_OE(offset));
t |= PIN_IM(offset);
__raw_writel(t, reg);
return 0;
}
static inline int leds_direction_output(unsigned led, int value)
static int adm5120_gpio0_direction_output(struct gpio_chip *chip,
unsigned offset, int value)
{
void __iomem **reg;
u32 t;
reg = GPIO_REG(SWITCH_REG_GPIO_CONF0);
t = __raw_readl(reg);
t &= ~(PIN_IM(offset) | PIN_OV(offset));
t |= PIN_OE(offset);
if (value)
t |= PIN_OV(offset);
__raw_writel(t, reg);
return 0;
}
static struct gpio_chip adm5120_gpio0_chip = {
.label = "adm5120 gpio0",
.get = adm5120_gpio0_get_value,
.set = adm5120_gpio0_set_value,
.direction_input = adm5120_gpio0_direction_input,
.direction_output = adm5120_gpio0_direction_output,
.base = ADM5120_GPIO_PIN0,
.ngpio = ADM5120_GPIO_PIN7 - ADM5120_GPIO_PIN0 + 1,
};
int __adm5120_gpio1_get_value(unsigned offset)
{
void __iomem **reg;
u32 t, m;
reg = gpio1_table[offset].reg;
t = __raw_readl(reg);
m = (t >> gpio1_table[offset].mode_shift) & LED_MODE_MASK;
if (m == LED_MODE_INPUT)
return (t >> gpio1_table[offset].iv_shift) & 1;
if (m == LED_MODE_OUT_LOW)
return 0;
return 1;
}
EXPORT_SYMBOL(__adm5120_gpio1_get_value);
void __adm5120_gpio1_set_value(unsigned offset, int value)
{
void __iomem **reg;
u32 t, s;
reg = led_table[led].reg;
s = led_table[led].mode_shift;
reg = gpio1_table[offset].reg;
s = gpio1_table[offset].mode_shift;
t = GPIO_READ(reg);
t = __raw_readl(reg);
t &= ~(LED_MODE_MASK << s);
switch (value) {
@ -202,137 +239,58 @@ static inline int leds_direction_output(unsigned led, int value)
break;
}
GPIO_WRITE(t, reg);
__raw_writel(t, reg);
}
EXPORT_SYMBOL(__adm5120_gpio1_set_value);
return 0;
static int adm5120_gpio1_get_value(struct gpio_chip *chip, unsigned offset)
{
return __adm5120_gpio1_get_value(offset);
}
static inline int leds_get_value(unsigned led)
static void adm5120_gpio1_set_value(struct gpio_chip *chip,
unsigned offset, int value)
{
__adm5120_gpio1_set_value(offset, value);
}
static int adm5120_gpio1_direction_input(struct gpio_chip *chip,
unsigned offset)
{
void __iomem **reg;
u32 t, m;
u32 t;
reg = led_table[led].reg;
t = GPIO_READ(reg);
m = (t >> led_table[led].mode_shift) & LED_MODE_MASK;
if (m == LED_MODE_INPUT)
return (t >> led_table[led].iv_shift) & 1;
if (m == LED_MODE_OUT_LOW)
return 0;
return 1;
}
/*-------------------------------------------------------------------------*/
/*
* Main GPIO support routines
*/
int adm5120_gpio_direction_input(unsigned gpio)
{
if (gpio_is_invalid(gpio))
return -EINVAL;
if (gpio < ADM5120_GPIO_P0L0)
return pins_direction_input(gpio);
gpio -= ADM5120_GPIO_P0L0;
return leds_direction_input(gpio);
}
EXPORT_SYMBOL(adm5120_gpio_direction_input);
int adm5120_gpio_direction_output(unsigned gpio, int value)
{
if (gpio_is_invalid(gpio))
return -EINVAL;
if (gpio < ADM5120_GPIO_P0L0)
return pins_direction_output(gpio, value);
gpio -= ADM5120_GPIO_P0L0;
return leds_direction_output(gpio, value);
}
EXPORT_SYMBOL(adm5120_gpio_direction_output);
int adm5120_gpio_get_value(unsigned gpio)
{
if (gpio < ADM5120_GPIO_P0L0)
return pins_get_value(gpio);
gpio -= ADM5120_GPIO_P0L0;
return leds_get_value(gpio);
}
EXPORT_SYMBOL(adm5120_gpio_get_value);
void adm5120_gpio_set_value(unsigned gpio, int value)
{
if (gpio < ADM5120_GPIO_P0L0) {
pins_set_value(gpio, value);
return;
}
gpio -= ADM5120_GPIO_P0L0;
leds_direction_output(gpio, value);
}
EXPORT_SYMBOL(adm5120_gpio_set_value);
int adm5120_gpio_request(unsigned gpio, const char *label)
{
if (gpio_is_invalid(gpio))
return -EINVAL;
if (gpio_is_used(gpio))
return -EBUSY;
adm5120_gpio_map[gpio].flags |= GPIO_FLAG_USED;
adm5120_gpio_map[gpio].label = label;
reg = gpio1_table[offset].reg;
t = __raw_readl(reg);
t &= ~(LED_MODE_MASK << gpio1_table[offset].mode_shift);
__raw_writel(t, reg);
return 0;
}
EXPORT_SYMBOL(adm5120_gpio_request);
void adm5120_gpio_free(unsigned gpio)
static int adm5120_gpio1_direction_output(struct gpio_chip *chip,
unsigned offset, int value)
{
if (gpio_is_invalid(gpio))
return;
adm5120_gpio_map[gpio].flags &= ~GPIO_FLAG_USED;
adm5120_gpio_map[gpio].label = NULL;
__adm5120_gpio1_set_value(offset, value);
return 0;
}
EXPORT_SYMBOL(adm5120_gpio_free);
int adm5120_gpio_to_irq(unsigned gpio)
{
if (gpio > ADM5120_GPIO_MAX)
return -EINVAL;
return adm5120_gpio_map[gpio].irq;
}
EXPORT_SYMBOL(adm5120_gpio_to_irq);
int adm5120_irq_to_gpio(unsigned irq)
{
int i;
for (i = 0; i < ADM5120_GPIO_COUNT; i++)
if (adm5120_gpio_map[i].irq == irq)
return i;
return -EINVAL;
}
EXPORT_SYMBOL(adm5120_irq_to_gpio);
/*-------------------------------------------------------------------------*/
static struct gpio_chip adm5120_gpio1_chip = {
.label = "adm5120 gpio1",
.get = adm5120_gpio1_get_value,
.set = adm5120_gpio1_set_value,
.direction_input = adm5120_gpio1_direction_input,
.direction_output = adm5120_gpio1_direction_output,
.base = ADM5120_GPIO_P0L0,
.ngpio = ADM5120_GPIO_P4L2 - ADM5120_GPIO_P0L0 + 1,
};
void __init adm5120_gpio_csx0_enable(void)
{
gpio_conf2 |= GPIO_CONF2_CSX0;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
adm5120_gpio_map[ADM5120_GPIO_PIN1].flags &= ~GPIO_FLAG_VALID;
adm5120_gpio_map[ADM5120_GPIO_PIN2].irq = ADM5120_IRQ_GPIO2;
gpio_request(ADM5120_GPIO_PIN1, "CSX0");
}
void __init adm5120_gpio_csx1_enable(void)
@ -340,9 +298,7 @@ void __init adm5120_gpio_csx1_enable(void)
gpio_conf2 |= GPIO_CONF2_CSX1;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
adm5120_gpio_map[ADM5120_GPIO_PIN3].flags &= ~GPIO_FLAG_VALID;
if (adm5120_package_bga())
adm5120_gpio_map[ADM5120_GPIO_PIN4].irq = ADM5120_IRQ_GPIO4;
gpio_request(ADM5120_GPIO_PIN3, "CSX1");
}
void __init adm5120_gpio_ew_enable(void)
@ -350,23 +306,26 @@ void __init adm5120_gpio_ew_enable(void)
gpio_conf2 |= GPIO_CONF2_EW;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
adm5120_gpio_map[ADM5120_GPIO_PIN0].flags &= ~GPIO_FLAG_VALID;
gpio_request(ADM5120_GPIO_PIN0, "EW");
}
void __init adm5120_gpio_init(void)
{
int i;
int err;
gpio_conf2 = 0;
SW_WRITE_REG(SWITCH_REG_GPIO_CONF2, gpio_conf2);
for (i = 0; i < ADM5120_GPIO_COUNT; i++)
adm5120_gpio_map[i].flags = GPIO_FLAG_VALID;
if (adm5120_package_pqfp()) {
adm5120_gpio_map[ADM5120_GPIO_PIN4].flags &= ~GPIO_FLAG_VALID;
adm5120_gpio_map[ADM5120_GPIO_PIN5].flags &= ~GPIO_FLAG_VALID;
adm5120_gpio_map[ADM5120_GPIO_PIN6].flags &= ~GPIO_FLAG_VALID;
adm5120_gpio_map[ADM5120_GPIO_PIN7].flags &= ~GPIO_FLAG_VALID;
gpiochip_reserve(ADM5120_GPIO_PIN4, 4);
adm5120_gpio0_chip.ngpio = 4;
}
err = gpiochip_add(&adm5120_gpio0_chip);
if (err)
panic("cannot add ADM5120 GPIO0 chip, error=%d", err);
err = gpiochip_add(&adm5120_gpio1_chip);
if (err)
panic("cannot add ADM5120 GPIO1 chip, error=%d", err);
}

73
target/linux/adm5120/files-2.6.26/include/asm-mips/mach-adm5120/gpio.h
View File

@ -9,8 +9,12 @@
*
*/
#ifndef _ASM_MACH_ADM5120_GPIO_H
#define _ASM_MACH_ADM5120_GPIO_H
#ifndef _ASM_MIPS_MACH_ADM5120_GPIO_H
#define _ASM_MIPS_MACH_ADM5120_GPIO_H
#define ARCH_NR_GPIOS 64
#include <asm-generic/gpio.h>
#include <asm/mach-adm5120/adm5120_switch.h>
@ -55,46 +59,45 @@
#define ADM5120_GPIO_10M_ACT (ADM5120_GPIO_SWITCH | LED_MODE_10M_ACT)
#define ADM5120_GPIO_100M_ACT (ADM5120_GPIO_SWITCH | LED_MODE_100M_ACT)
extern int adm5120_gpio_direction_input(unsigned gpio);
extern int adm5120_gpio_direction_output(unsigned gpio, int value);
extern int adm5120_gpio_get_value(unsigned gpio);
extern void adm5120_gpio_set_value(unsigned gpio, int value);
extern int adm5120_gpio_request(unsigned gpio, const char *label);
extern void adm5120_gpio_free(unsigned gpio);
extern int __adm5120_gpio0_get_value(unsigned gpio);
extern void __adm5120_gpio0_set_value(unsigned gpio, int value);
extern int __adm5120_gpio1_get_value(unsigned gpio);
extern void __adm5120_gpio1_set_value(unsigned gpio, int value);
extern int adm5120_gpio_to_irq(unsigned gpio);
extern int adm5120_irq_to_gpio(unsigned irq);
/*
* Wrappers for the generic GPIO layer
*/
static inline int gpio_direction_input(unsigned gpio)
{
return adm5120_gpio_direction_input(gpio);
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return adm5120_gpio_direction_output(gpio,value);
}
static inline int gpio_get_value(unsigned gpio)
{
return adm5120_gpio_get_value(gpio);
int ret;
switch (gpio) {
case ADM5120_GPIO_PIN0 ... ADM5120_GPIO_PIN7:
ret = __adm5120_gpio0_get_value(gpio);
break;
case ADM5120_GPIO_P0L0 ... ADM5120_GPIO_P4L2:
ret = __adm5120_gpio1_get_value(gpio - ADM5120_GPIO_P0L0);
break;
default:
ret = __gpio_get_value(gpio);
break;
}
return ret;
}
static inline void gpio_set_value(unsigned gpio, int value)
{
adm5120_gpio_set_value(gpio, value);
}
static inline int gpio_request(unsigned gpio, const char *label)
{
return adm5120_gpio_request(gpio, label);
}
static inline void gpio_free(unsigned gpio)
{
adm5120_gpio_free(gpio);
switch (gpio) {
case ADM5120_GPIO_PIN0 ... ADM5120_GPIO_PIN7:
__adm5120_gpio0_set_value(gpio, value);
break;
case ADM5120_GPIO_P0L0 ... ADM5120_GPIO_P4L2:
__adm5120_gpio1_set_value(gpio - ADM5120_GPIO_P0L0, value);
break;
default:
__gpio_set_value(gpio, value);
break;
}
}
static inline int gpio_to_irq(unsigned gpio)
@ -107,6 +110,6 @@ static inline int irq_to_gpio(unsigned irq)
return adm5120_irq_to_gpio(irq);
}
#include <asm-generic/gpio.h> /* cansleep wrappers */
#define gpio_cansleep __gpio_cansleep
#endif /* _ASM_MACH_ADM5120_GPIO_H */
#endif /* _ASM_MIPS_MACH_ADM5120_GPIO_H */

3
target/linux/adm5120/patches-2.6.26/001-adm5120.patch
View File

@ -1,6 +1,6 @@
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -18,6 +18,20 @@
@@ -18,6 +18,21 @@
prompt "System type"
default SGI_IP22
@ -16,6 +16,7 @@
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select GENERIC_GPIO
+ select HAVE_GPIO_LIB
+ select SWAP_IO_SPACE if CPU_BIG_ENDIAN
+
config MACH_ALCHEMY

3
target/linux/adm5120/router_be/config-2.6.26
View File

@ -83,10 +83,13 @@ CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
# CONFIG_GPIO_MCP23S08 is not set
CONFIG_GPIO_SYSFS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
# CONFIG_HAVE_DMA_ATTRS is not set
CONFIG_HAVE_GPIO_LIB=y
CONFIG_HAVE_IDE=y
# CONFIG_HAVE_KPROBES is not set
# CONFIG_HAVE_KRETPROBES is not set

3
target/linux/adm5120/router_le/config-2.6.26
View File

@ -104,10 +104,13 @@ CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
# CONFIG_GPIO_MCP23S08 is not set
CONFIG_GPIO_SYSFS=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
# CONFIG_HAVE_DMA_ATTRS is not set
CONFIG_HAVE_GPIO_LIB=y
CONFIG_HAVE_IDE=y
# CONFIG_HAVE_KPROBES is not set
# CONFIG_HAVE_KRETPROBES is not set