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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 13:42:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 13:42:43 -0700
commit2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc (patch)
treee35a625496acc6ac852846d40b8851186b9d1ac4 /arch/arm/mach-mx3/iomux.c
parent44b7532b8b464f606053562400719c9c21276037 (diff)
parentce53895a5d24e0ee19fb92f56c17323fb4c9ab27 (diff)
downloadtalos-op-linux-2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc.tar.gz
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Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (417 commits) MAINTAINERS: EB110ATX is not ebsa110 MAINTAINERS: update Eric Miao's email address and status fb: add support of LCD display controller on pxa168/910 (base layer) [ARM] 5552/1: ep93xx get_uart_rate(): use EP93XX_SYSCON_PWRCNT and EP93XX_SYSCON_PWRCN [ARM] pxa/sharpsl_pm: zaurus needs generic pxa suspend/resume routines [ARM] 5544/1: Trust PrimeCell resource sizes [ARM] pxa/sharpsl_pm: cleanup of gpio-related code. [ARM] pxa/sharpsl_pm: drop set_irq_type calls [ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one [ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific [ARM] sa1100: remove unused collie_pm.c [ARM] pxa: fix the conflicting non-static declarations of global_gpios[] [ARM] 5550/1: Add default configure file for w90p910 platform [ARM] 5549/1: Add clock api for w90p910 platform. [ARM] 5548/1: Add gpio api for w90p910 platform [ARM] 5551/1: Add multi-function pin api for w90p910 platform. [ARM] Make ARM_VIC_NR depend on ARM_VIC [ARM] 5546/1: ARM PL022 SSP/SPI driver v3 ARM: OMAP4: SMP: Update defconfig for OMAP4430 ARM: OMAP4: SMP: Enable SMP support for OMAP4430 ...
Diffstat (limited to 'arch/arm/mach-mx3/iomux.c')
-rw-r--r--arch/arm/mach-mx3/iomux.c25
1 files changed, 6 insertions, 19 deletions
diff --git a/arch/arm/mach-mx3/iomux.c b/arch/arm/mach-mx3/iomux.c
index 40ffc5a664d9..c66ccbcdc11b 100644
--- a/arch/arm/mach-mx3/iomux.c
+++ b/arch/arm/mach-mx3/iomux.c
@@ -21,7 +21,6 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/io.h>
-#include <linux/gpio.h>
#include <linux/kernel.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
@@ -94,15 +93,13 @@ void mxc_iomux_set_pad(enum iomux_pins pin, u32 config)
EXPORT_SYMBOL(mxc_iomux_set_pad);
/*
- * setups a single pin:
+ * allocs a single pin:
* - reserves the pin so that it is not claimed by another driver
* - setups the iomux according to the configuration
- * - if the pin is configured as a GPIO, we claim it through kernel gpiolib
*/
-int mxc_iomux_setup_pin(const unsigned int pin, const char *label)
+int mxc_iomux_alloc_pin(const unsigned int pin, const char *label)
{
unsigned pad = pin & IOMUX_PADNUM_MASK;
- unsigned gpio;
if (pad >= (PIN_MAX + 1)) {
printk(KERN_ERR "mxc_iomux: Attempt to request nonexistant pin %u for \"%s\"\n",
@@ -113,19 +110,13 @@ int mxc_iomux_setup_pin(const unsigned int pin, const char *label)
if (test_and_set_bit(pad, mxc_pin_alloc_map)) {
printk(KERN_ERR "mxc_iomux: pin %u already used. Allocation for \"%s\" failed\n",
pad, label ? label : "?");
- return -EINVAL;
+ return -EBUSY;
}
mxc_iomux_mode(pin);
- /* if we have a gpio, we can allocate it */
- gpio = (pin & IOMUX_GPIONUM_MASK) >> IOMUX_GPIONUM_SHIFT;
- if (gpio < (GPIO_PORT_MAX + 1) * 32)
- if (gpio_request(gpio, label))
- return -EINVAL;
-
return 0;
}
-EXPORT_SYMBOL(mxc_iomux_setup_pin);
+EXPORT_SYMBOL(mxc_iomux_alloc_pin);
int mxc_iomux_setup_multiple_pins(unsigned int *pin_list, unsigned count,
const char *label)
@@ -135,7 +126,8 @@ int mxc_iomux_setup_multiple_pins(unsigned int *pin_list, unsigned count,
int ret = -EINVAL;
for (i = 0; i < count; i++) {
- if (mxc_iomux_setup_pin(*p, label))
+ ret = mxc_iomux_alloc_pin(*p, label);
+ if (ret)
goto setup_error;
p++;
}
@@ -150,14 +142,9 @@ EXPORT_SYMBOL(mxc_iomux_setup_multiple_pins);
void mxc_iomux_release_pin(const unsigned int pin)
{
unsigned pad = pin & IOMUX_PADNUM_MASK;
- unsigned gpio;
if (pad < (PIN_MAX + 1))
clear_bit(pad, mxc_pin_alloc_map);
-
- gpio = (pin & IOMUX_GPIONUM_MASK) >> IOMUX_GPIONUM_SHIFT;
- if (gpio < (GPIO_PORT_MAX + 1) * 32)
- gpio_free(gpio);
}
EXPORT_SYMBOL(mxc_iomux_release_pin);
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