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drivers: pwm: Microchp XEC PWM driver add PINCTRL support

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Add build time optional PINCTRL support to common PWM driver
for Microchip XEC MEC15xx and MEC172x families.

Signed-off-by: Jay Vasanth <jay.vasanth@microchip.com>
This commit is contained in:
Jay Vasanth 2022-03-11 14:52:59 -05:00 committed by Anas Nashif
parent 845c1185a2
commit 7c65268f3e
4 changed files with 42 additions and 5 deletions
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6
boards/arm/mec172xevb_assy6906/mec172xevb_assy6906.dts
View file

@ -234,3 +234,9 @@
&kso13_gpio126 >;
pinctrl-names = "default";
};
&pwm0 {
status = "okay";
pinctrl-0 = <&pwm0_gpio053>;
pinctrl-names = "default";
};

1
drivers/pwm/Kconfig.xec
View file

@ -6,5 +6,6 @@
config PWM_XEC
bool "Microchip XEC PWM"
depends on SOC_FAMILY_MEC
default $(dt_compat_enabled,${DT_COMPAT_ST_PWM_XEC})
help
Enable driver to utilize PWM on the Microchip XEC IP block.

38
drivers/pwm/pwm_mchp_xec.c
View file

@ -9,17 +9,19 @@
#include <errno.h>
#include <soc.h>
#include <drivers/pwm.h>
#include <device.h>
#ifdef CONFIG_SOC_SERIES_MEC172X
#include <drivers/clock_control/mchp_xec_clock_control.h>
#include <drivers/interrupt_controller/intc_mchp_xec_ecia.h>
#endif
#include <device.h>
#ifdef CONFIG_PINCTRL
#include <drivers/pinctrl.h>
#endif
#include <drivers/pwm.h>
#include <errno.h>
#include <kernel.h>
#include <init.h>
#include <pm/device.h>
#include <soc.h>
#include <stdlib.h>
#include <logging/log.h>
@ -54,6 +56,9 @@ struct pwm_xec_config {
struct pwm_regs * const regs;
uint8_t pcr_idx;
uint8_t pcr_pos;
#ifdef CONFIG_PINCTRL
const struct pinctrl_dev_config *pcfg;
#endif
};
struct xec_params {
@ -380,20 +385,45 @@ static const struct pwm_driver_api pwm_xec_driver_api = {
static int pwm_xec_init(const struct device *dev)
{
#ifdef CONFIG_PINCTRL
const struct pwm_xec_config * const cfg = dev->config;
int ret = pinctrl_apply_state(cfg->pcfg, PINCTRL_STATE_DEFAULT);
if (ret != 0) {
LOG_ERR("XEC PWM pinctrl init failed (%d)", ret);
return ret;
}
#else
ARG_UNUSED(dev);
#endif
return 0;
}
#ifdef CONFIG_PINCTRL
#define XEC_PWM_PINCTRL_DEF(inst) PINCTRL_DT_INST_DEFINE(inst)
#define XEC_PWM_CONFIG(inst) \
static struct pwm_xec_config pwm_xec_config_##inst = { \
.regs = (struct pwm_regs * const)DT_INST_REG_ADDR(inst), \
.pcr_idx = (uint8_t)DT_INST_PROP_BY_IDX(inst, pcrs, 0), \
.pcr_pos = (uint8_t)DT_INST_PROP_BY_IDX(inst, pcrs, 1), \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(inst), \
};
#else
#define XEC_PWM_PINCTRL_DEF(inst)
#define XEC_PWM_CONFIG(inst) \
static struct pwm_xec_config pwm_xec_config_##inst = { \
.regs = (struct pwm_regs * const)DT_INST_REG_ADDR(inst), \
.pcr_idx = (uint8_t)DT_INST_PROP_BY_IDX(inst, pcrs, 0), \
.pcr_pos = (uint8_t)DT_INST_PROP_BY_IDX(inst, pcrs, 1), \
};
#endif
#define XEC_PWM_DEVICE_INIT(index) \
\
XEC_PWM_PINCTRL_DEF(index); \
\
XEC_PWM_CONFIG(index); \
\
DEVICE_DT_INST_DEFINE(index, &pwm_xec_init, \

2
dts/bindings/pwm/microchip,xec-pwm.yaml
View file

@ -3,7 +3,7 @@
description: Microchip XEC PWM
include: [pwm-controller.yaml, base.yaml]
include: [pwm-controller.yaml, base.yaml, pinctrl-device.yaml]
compatible: "microchip,xec-pwm"