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pinctrl/coh901: use generic pinconf enums and parameters

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Adjust the COH 901 driver to use the standard enums for
biasing and driving pins, alter signature of config function
to suit the framework.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2011-11-16 20:10:09 +01:00
parent 394349f778
commit a050b3eee6
1 changed files with 13 additions and 43 deletions
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56
drivers/pinctrl/pinctrl-coh901.c
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@ -25,36 +25,6 @@
#include <linux/pinctrl/consumer.h>
#include <mach/gpio-u300.h>
/*
* Bias modes for U300 GPIOs
*
* GPIO_U300_CONFIG_BIAS_UNKNOWN: this bias mode is not known to us
* GPIO_U300_CONFIG_BIAS_FLOAT: no specific bias, the GPIO will float or state
* is not controlled by software
* GPIO_U300_CONFIG_BIAS_PULL_UP: the GPIO will be pulled up (usually with high
* impedance to VDD)
*/
#define GPIO_U300_CONFIG_BIAS_UNKNOWN 0x1000
#define GPIO_U300_CONFIG_BIAS_FLOAT 0x1001
#define GPIO_U300_CONFIG_BIAS_PULL_UP 0x1002
/*
* Drive modes for U300 GPIOs (output)
*
* GPIO_U300_CONFIG_DRIVE_PUSH_PULL: the GPIO will be driven actively high and
* low, this is the most typical case and is typically achieved with two
* active transistors on the output
* GPIO_U300_CONFIG_DRIVE_OPEN_DRAIN: the GPIO will be driven with open drain
* (open collector) which means it is usually wired with other output
* ports which are then pulled up with an external resistor
* GPIO_U300_CONFIG_DRIVE_OPEN_SOURCE: the GPIO will be driven with open drain
* (open emitter) which is the same as open drain mutatis mutandis but
* pulled to ground
*/
#define GPIO_U300_CONFIG_DRIVE_PUSH_PULL 0x2000
#define GPIO_U300_CONFIG_DRIVE_OPEN_DRAIN 0x2001
#define GPIO_U300_CONFIG_DRIVE_OPEN_SOURCE 0x2002
/*
* Register definitions for COH 901 335 variant
*/
@ -181,12 +151,12 @@ struct u300_gpio_confdata {
#define BS365_GPIO_NUM_PORTS 5
#define U300_FLOATING_INPUT { \
.bias_mode = GPIO_U300_CONFIG_BIAS_FLOAT, \
.bias_mode = PIN_CONFIG_BIAS_HIGH_IMPEDANCE, \
.output = false, \
}
#define U300_PULL_UP_INPUT { \
.bias_mode = GPIO_U300_CONFIG_BIAS_PULL_UP, \
.bias_mode = PIN_CONFIG_BIAS_PULL_UP, \
.output = false, \
}
@ -449,7 +419,7 @@ static int u300_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
}
static int u300_gpio_config(struct gpio_chip *chip, unsigned offset,
u16 param, unsigned long *data)
enum pin_config_param param, unsigned long data)
{
struct u300_gpio *gpio = to_u300_gpio(chip);
unsigned long flags;
@ -457,16 +427,16 @@ static int u300_gpio_config(struct gpio_chip *chip, unsigned offset,
local_irq_save(flags);
switch (param) {
case GPIO_U300_CONFIG_BIAS_UNKNOWN:
case GPIO_U300_CONFIG_BIAS_FLOAT:
case PIN_CONFIG_BIAS_DISABLE:
case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
val = readl(U300_PIN_REG(offset, per));
writel(val | U300_PIN_BIT(offset), U300_PIN_REG(offset, per));
break;
case GPIO_U300_CONFIG_BIAS_PULL_UP:
case PIN_CONFIG_BIAS_PULL_UP:
val = readl(U300_PIN_REG(offset, per));
writel(val & ~U300_PIN_BIT(offset), U300_PIN_REG(offset, per));
break;
case GPIO_U300_CONFIG_DRIVE_PUSH_PULL:
case PIN_CONFIG_DRIVE_PUSH_PULL:
val = readl(U300_PIN_REG(offset, pcr));
val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK
<< ((offset & 0x07) << 1));
@ -474,7 +444,7 @@ static int u300_gpio_config(struct gpio_chip *chip, unsigned offset,
<< ((offset & 0x07) << 1));
writel(val, U300_PIN_REG(offset, pcr));
break;
case GPIO_U300_CONFIG_DRIVE_OPEN_DRAIN:
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
val = readl(U300_PIN_REG(offset, pcr));
val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK
<< ((offset & 0x07) << 1));
@ -482,7 +452,7 @@ static int u300_gpio_config(struct gpio_chip *chip, unsigned offset,
<< ((offset & 0x07) << 1));
writel(val, U300_PIN_REG(offset, pcr));
break;
case GPIO_U300_CONFIG_DRIVE_OPEN_SOURCE:
case PIN_CONFIG_DRIVE_OPEN_SOURCE:
val = readl(U300_PIN_REG(offset, pcr));
val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK
<< ((offset & 0x07) << 1));
@ -651,12 +621,12 @@ static void __init u300_gpio_init_pin(struct u300_gpio *gpio,
/* Deactivate bias mode for output */
u300_gpio_config(&gpio->chip, offset,
GPIO_U300_CONFIG_BIAS_FLOAT,
NULL);
PIN_CONFIG_BIAS_HIGH_IMPEDANCE,
0);
/* Set drive mode for output */
u300_gpio_config(&gpio->chip, offset,
GPIO_U300_CONFIG_DRIVE_PUSH_PULL, NULL);
PIN_CONFIG_DRIVE_PUSH_PULL, 0);
dev_dbg(gpio->dev, "set up pin %d as output, value: %d\n",
offset, conf->outval);
@ -667,7 +637,7 @@ static void __init u300_gpio_init_pin(struct u300_gpio *gpio,
u300_gpio_set(&gpio->chip, offset, 0);
/* Set bias mode for input */
u300_gpio_config(&gpio->chip, offset, conf->bias_mode, NULL);
u300_gpio_config(&gpio->chip, offset, conf->bias_mode, 0);
dev_dbg(gpio->dev, "set up pin %d as input, bias: %04x\n",
offset, conf->bias_mode);