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pwm: Use pinmap functions for setting up pwm.

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* Intended function of check_pwm also checks for conflicting gpio, due
* to quirk on galileo rev d, functionality commented.

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-05-06 15:01:44 +01:00
parent 5aa5aec661
commit 171f66208e
3 changed files with 54 additions and 6 deletions
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38
src/maa.c
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@@ -24,6 +24,7 @@
*/
#include <stddef.h>
#include <stdlib.h>
#include "maa.h"
#include "intel_galileo_rev_d.h"
@@ -98,14 +99,13 @@ maa_check_aio(int aio)
int pin = aio + plat->gpio_count;
if(plat->pins[pin].capabilites.aio != 1)
if (plat->pins[pin].capabilites.aio != 1)
return -1;
if (plat->pins[pin].aio.mux_total > 0)
if (maa_setup_mux_mapped(plat->pins[pin].aio) != MAA_SUCCESS)
return -1;
return plat->pins[pin].aio.pinmap;
}
unsigned int
@@ -132,3 +132,37 @@ maa_check_i2c(int bus_s)
return plat->i2c_bus[bus].bus_id;
}
maa_pin_t*
maa_check_pwm(int pin)
{
if (plat == NULL)
return NULL;
if (plat->pins[pin].capabilites.pwm != 1)
return NULL;
/** quirk in rev d, this messes with pwm on that pin
* if (plat->pins[pin].capabilites.gpio == 1) {
* maa_gpio_context* mux_i;
* mux_i = maa_gpio_init_raw(plat->pins[pin].gpio.pinmap);
* if (mux_i == NULL)
* return NULL;
* if (maa_gpio_dir(mux_i, MAA_GPIO_OUT) != MAA_SUCCESS)
* return NULL;
* if (maa_gpio_write(mux_i, 0) != MAA_SUCCESS)
* return NULL;
* if (maa_gpio_close(mux_i) != MAA_SUCCESS)
* return NULL;
* }
*/
if (plat->pins[pin].pwm.mux_total > 0)
if (maa_setup_mux_mapped(plat->pins[pin].pwm) != MAA_SUCCESS)
return NULL;
maa_pin_t *ret;
ret = (maa_pin_t*) malloc(sizeof(maa_pin_t));
ret->pinmap = plat->pins[pin].pwm.pinmap;
ret->parent_id = plat->pins[pin].pwm.parent_id;
return ret;
}