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author | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
commit | 9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch) | |
tree | 8d104ec2a459346b99413b0b77421ca7b9936c1a /arch/arm/mach-mx3/iomux.c | |
parent | ca44d6e60f9de26281fda203f58b570e1748c015 (diff) | |
parent | 45e3e1935e2857c54783291107d33323b3ef33c8 (diff) | |
download | kernel_samsung_smdk4412-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.zip kernel_samsung_smdk4412-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.tar.gz kernel_samsung_smdk4412-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.tar.bz2 |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/scsi/fcoe/fcoe.c
net/core/drop_monitor.c
net/core/net-traces.c
Diffstat (limited to 'arch/arm/mach-mx3/iomux.c')
-rw-r--r-- | arch/arm/mach-mx3/iomux.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/arch/arm/mach-mx3/iomux.c b/arch/arm/mach-mx3/iomux.c index 40ffc5a..c66ccbc 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); |