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drivers: gpio: cc13xx_cc26xx: add power management support

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Adding a dependency on the GPIO resource in the TI Power module, and
configuring the edge detection on pads as a wakeup source.

Signed-off-by: Vincent Wan <vincent.wan@linaro.org>
This commit is contained in:
Vincent Wan 2019-09-02 13:40:02 -07:00 • committed by Anas Nashif
commit d2cf6c4a74
1 changed files with 16 additions and 0 deletions
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16
drivers/gpio/gpio_cc13xx_cc26xx.c
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@ -15,6 +15,11 @@
#include <driverlib/ioc.h>
#include <driverlib/prcm.h>
#include <inc/hw_aon_event.h>
#include <ti/drivers/Power.h>
#include <ti/drivers/power/PowerCC26XX.h>
#include "gpio_utils.h"
/* bits 16-18 in iocfg registers correspond to interrupt settings */
@ -230,6 +235,10 @@ static int gpio_cc13xx_cc26xx_init(struct device *dev)
{
struct gpio_cc13xx_cc26xx_data *data = dev->driver_data;
#ifdef CONFIG_SYS_POWER_MANAGEMENT
/* Set dependency on gpio resource to turn on power domains */
Power_setDependency(PowerCC26XX_PERIPH_GPIO);
#else
/* Enable peripheral power domain */
PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH);
@ -241,6 +250,13 @@ static int gpio_cc13xx_cc26xx_init(struct device *dev)
while (!PRCMLoadGet()) {
continue;
}
#endif
/* Enable edge detection on any pad as a wakeup source */
HWREG(AON_EVENT_BASE + AON_EVENT_O_MCUWUSEL) =
(HWREG(AON_EVENT_BASE + AON_EVENT_O_MCUWUSEL) &
(~AON_EVENT_MCUWUSEL_WU1_EV_M)) |
AON_EVENT_MCUWUSEL_WU1_EV_PAD;
/* Enable IRQ */
IRQ_CONNECT(DT_INST_0_TI_CC13XX_CC26XX_GPIO_IRQ_0,