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Date: Tue, 6 Mar 2012 23:05:25 +0100
From: Linus Walleij <linus.walleij@...ricsson.com>
To: <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Cc: Stephen Warren <swarren@...dia.com>,
Shawn Guo <shawn.guo@...escale.com>,
Thomas Abraham <thomas.abraham@...aro.org>,
Dong Aisheng <dong.aisheng@...aro.org>,
Rajendra Nayak <rajendra.nayak@...aro.org>,
Haojian Zhuang <haojian.zhuang@...vell.com>,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 2/4] pinctrl/coh901: use generic pinconf enums and parameters
From: Linus Walleij <linus.walleij@...aro.org>
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@...aro.org>
---
drivers/pinctrl/pinctrl-coh901.c | 56 +++++++++-----------------------------
1 files changed, 13 insertions(+), 43 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-coh901.c b/drivers/pinctrl/pinctrl-coh901.c
index b90c011..724234c 100644
--- a/drivers/pinctrl/pinctrl-coh901.c
+++ b/drivers/pinctrl/pinctrl-coh901.c
@@ -26,36 +26,6 @@
#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
*/
#define U300_335_PORT_STRIDE (0x1C)
@@ -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);
--
1.7.8
--
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