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yaml --- r: 172520 b: refs/heads/master c: b0d5217 h: refs/heads/master v: v3
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Kyungmin Park
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Ben Dooks
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Dec 1, 2009
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refs/heads/master: d7b9ace51d949e1bfec7f32d21d094cf2c683ca0 | ||
refs/heads/master: b0d5217cfb0a2357ac076977400c648cccff6154 |
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/* linux/arch/arm/plat-s5pc1xx/gpio-config.c | ||
* | ||
* Copyright 2009 Samsung Electronics | ||
* | ||
* S5PC1XX GPIO Configuration. | ||
* | ||
* Based on plat-s3c64xx/gpio-config.c | ||
* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
*/ | ||
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#include <linux/kernel.h> | ||
#include <linux/module.h> | ||
#include <linux/gpio.h> | ||
#include <linux/io.h> | ||
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#include <mach/gpio-core.h> | ||
#include <plat/gpio-cfg-s5pc1xx.h> | ||
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s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin, unsigned int off) | ||
{ | ||
struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); | ||
void __iomem *reg; | ||
int shift = off * 2; | ||
u32 drvstr; | ||
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if (!chip) | ||
return -EINVAL; | ||
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reg = chip->base + 0x0C; | ||
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drvstr = __raw_readl(reg); | ||
drvstr = 0xffff & (0x3 << shift); | ||
drvstr = drvstr >> shift; | ||
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return (__force s5p_gpio_drvstr_t)drvstr; | ||
} | ||
EXPORT_SYMBOL(s5p_gpio_get_drvstr); | ||
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int s5p_gpio_set_drvstr(unsigned int pin, unsigned int off, | ||
s5p_gpio_drvstr_t drvstr) | ||
{ | ||
struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); | ||
void __iomem *reg; | ||
int shift = off * 2; | ||
u32 tmp; | ||
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if (!chip) | ||
return -EINVAL; | ||
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reg = chip->base + 0x0C; | ||
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tmp = __raw_readl(reg); | ||
tmp |= drvstr << shift; | ||
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__raw_writel(tmp, reg); | ||
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return 0; | ||
} | ||
EXPORT_SYMBOL(s5p_gpio_set_drvstr); |
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