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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 11:12:43 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 11:12:43 -0500
commit79c9601c2e0dbbe69895d302de4d19f3a31fbd30 (patch)
tree78d4be2df851b2b4106adcfd736622a90cecf9e9 /arch/arm/plat-s5pc1xx/gpio-config.c
parent41440ffe21f29bdb985cab76b2d0b06d83e63b19 (diff)
parent3d14b5beba35250c548d3851a2b84fce742d8311 (diff)
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (272 commits) Fix soc_common PCMCIA configuration ARM: 5827/1: SA1100: h3100/h3600: emit messages on failed gpio_request ARM: 5826/1: SA1100: h3100/h3600: always build htc-egpio driver ARM: 5825/1: SA1100: h3600: update defconfig ARM: 5824/1: SA1100: reuse h3600 PCMCIA driver on h3100 ARM: 5823/1: SA1100: h3100/h3600: add support for gpio-keys ARM: 5822/1: SA1100: h3100/h3600: clean up #includes ARM: 5821/1: SA1100: h3100/h3600: revise copyright boilerplates ARM: 5820/1: SA1100: h3100/h3600: split h3600.c ARM: 5819/1: SA1100: h3100/h3600: merge h3600.h and h3600_gpio.h into h3xxx.h ARM: 5818/1: SA1100: h3100/h3600: drop old GPIO definitions ARM: 5817/1: SA1100: h3100/h3600: configure all unused gpios as inputs ARM: 5816/1: SA1100: h3600: remove IRQ_GPIO_* definitions ARM: 5815/1: SA1100: h3100/h3600: remove now unused assign_h3600_egpio handlers ARM: 5814/1: SA1100: h3100/h3600: convert all users of assign_h3600_egpio to gpiolib ARM: 5813/1: SA1100: h3100/h3600: add htc-egpio driver ARM: 5812/1: SA1100: h3100/h3600: separate machine-specific LCD helpers ARM: 5811/2: pcmcia: convert sa1100_h3600 driver to gpiolib ARM: 5799/1: SA1100: h3600: stop setting direction for LCD pins ARM: 5798/1: SA1100: h3600: remove unused cruft from h3600.h ...
Diffstat (limited to 'arch/arm/plat-s5pc1xx/gpio-config.c')
-rw-r--r--arch/arm/plat-s5pc1xx/gpio-config.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/plat-s5pc1xx/gpio-config.c b/arch/arm/plat-s5pc1xx/gpio-config.c
new file mode 100644
index 000000000000..bba675df9c75
--- /dev/null
+++ b/arch/arm/plat-s5pc1xx/gpio-config.c
@@ -0,0 +1,62 @@
1/* linux/arch/arm/plat-s5pc1xx/gpio-config.c
2 *
3 * Copyright 2009 Samsung Electronics
4 *
5 * S5PC1XX GPIO Configuration.
6 *
7 * Based on plat-s3c64xx/gpio-config.c
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12*/
13
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/gpio.h>
17#include <linux/io.h>
18
19#include <mach/gpio-core.h>
20#include <plat/gpio-cfg-s5pc1xx.h>
21
22s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin, unsigned int off)
23{
24 struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
25 void __iomem *reg;
26 int shift = off * 2;
27 u32 drvstr;
28
29 if (!chip)
30 return -EINVAL;
31
32 reg = chip->base + 0x0C;
33
34 drvstr = __raw_readl(reg);
35 drvstr = 0xffff & (0x3 << shift);
36 drvstr = drvstr >> shift;
37
38 return (__force s5p_gpio_drvstr_t)drvstr;
39}
40EXPORT_SYMBOL(s5p_gpio_get_drvstr);
41
42int s5p_gpio_set_drvstr(unsigned int pin, unsigned int off,
43 s5p_gpio_drvstr_t drvstr)
44{
45 struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
46 void __iomem *reg;
47 int shift = off * 2;
48 u32 tmp;
49
50 if (!chip)
51 return -EINVAL;
52
53 reg = chip->base + 0x0C;
54
55 tmp = __raw_readl(reg);
56 tmp |= drvstr << shift;
57
58 __raw_writel(tmp, reg);
59
60 return 0;
61}
62EXPORT_SYMBOL(s5p_gpio_set_drvstr);