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drivers: pwm: pwm_nrfx: place data buffer in specified memory region

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Some devices (like nRF54H20) must have PWM data buffer
stored in appropriate location.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>
This commit is contained in:
Nikodem Kastelik 2024-04-23 11:48:22 +02:00 committed by Anas Nashif
parent a6f57fae0b
commit e0b98dccd1
1 changed files with 21 additions and 7 deletions
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28
drivers/pwm/pwm_nrfx.c
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@ -10,6 +10,7 @@
#include <soc.h>
#include <hal/nrf_gpio.h>
#include <stdbool.h>
#include <zephyr/linker/devicetree_regions.h>
#include <zephyr/logging/log.h>
@ -45,7 +46,6 @@ struct pwm_nrfx_config {
struct pwm_nrfx_data {
uint32_t period_cycles;
uint16_t seq_values[NRF_PWM_CHANNEL_COUNT];
/* Bit mask indicating channels that need the PWM generation. */
uint8_t pwm_needed;
uint8_t prescaler;
@ -56,6 +56,12 @@ struct pwm_nrfx_data {
#error "Current implementation supports maximum 8 channels."
#endif
static uint16_t *seq_values_ptr_get(const struct device *dev)
{
const struct pwm_nrfx_config *config = dev->config;
return (uint16_t *)config->seq.values.p_raw;
}
static bool pwm_period_check_and_set(const struct device *dev,
uint32_t channel, uint32_t period_cycles)
@ -164,7 +170,7 @@ static int pwm_nrfx_set_cycles(const struct device *dev, uint32_t channel,
needs_pwm = true;
}
data->seq_values[channel] = PWM_NRFX_CH_VALUE(compare_value, inverted);
seq_values_ptr_get(dev)[channel] = PWM_NRFX_CH_VALUE(compare_value, inverted);
LOG_DBG("channel %u, pulse %u, period %u, prescaler: %u.",
channel, pulse_cycles, period_cycles, data->prescaler);
@ -249,7 +255,6 @@ static const struct pwm_driver_api pwm_nrfx_drv_api_funcs = {
static int pwm_nrfx_init(const struct device *dev)
{
const struct pwm_nrfx_config *config = dev->config;
struct pwm_nrfx_data *data = dev->data;
uint8_t initially_inverted = 0;
int ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);
@ -260,7 +265,7 @@ static int pwm_nrfx_init(const struct device *dev)
return ret;
}
for (size_t i = 0; i < ARRAY_SIZE(data->seq_values); i++) {
for (size_t i = 0; i < NRF_PWM_CHANNEL_COUNT; i++) {
uint32_t psel;
if (channel_psel_get(i, &psel, config)) {
@ -273,10 +278,10 @@ static int pwm_nrfx_init(const struct device *dev)
}
}
for (size_t i = 0; i < ARRAY_SIZE(data->seq_values); i++) {
for (size_t i = 0; i < NRF_PWM_CHANNEL_COUNT; i++) {
bool inverted = initially_inverted & BIT(i);
data->seq_values[i] = PWM_NRFX_CH_VALUE(0, inverted);
seq_values_ptr_get(dev)[i] = PWM_NRFX_CH_VALUE(0, inverted);
}
nrfx_err_t result = nrfx_pwm_init(&config->pwm,
@ -339,10 +344,19 @@ static int pwm_nrfx_pm_action(const struct device *dev,
#define PWM(dev_idx) DT_NODELABEL(pwm##dev_idx)
#define PWM_PROP(dev_idx, prop) DT_PROP(PWM(dev_idx), prop)
#define PWM_HAS_PROP(idx, prop) DT_NODE_HAS_PROP(PWM(idx), prop)
#define PWM_MEMORY_SECTION(idx) \
COND_CODE_1(PWM_HAS_PROP(idx, memory_regions), \
(__attribute__((__section__(LINKER_DT_NODE_REGION_NAME( \
DT_PHANDLE(PWM(idx), memory_regions)))))), \
())
#define PWM_NRFX_DEVICE(idx) \
NRF_DT_CHECK_NODE_HAS_PINCTRL_SLEEP(PWM(idx)); \
static struct pwm_nrfx_data pwm_nrfx_##idx##_data; \
static uint16_t pwm_##idx##_seq_values[NRF_PWM_CHANNEL_COUNT] \
PWM_MEMORY_SECTION(idx); \
PINCTRL_DT_DEFINE(PWM(idx)); \
static const struct pwm_nrfx_config pwm_nrfx_##idx##_config = { \
.pwm = NRFX_PWM_INSTANCE(idx), \
@ -357,7 +371,7 @@ static int pwm_nrfx_pm_action(const struct device *dev,
.load_mode = NRF_PWM_LOAD_INDIVIDUAL, \
.step_mode = NRF_PWM_STEP_TRIGGERED, \
}, \
.seq.values.p_raw = pwm_nrfx_##idx##_data.seq_values, \
.seq.values.p_raw = pwm_##idx##_seq_values, \
.seq.length = NRF_PWM_CHANNEL_COUNT, \
.pcfg = PINCTRL_DT_DEV_CONFIG_GET(PWM(idx)), \
}; \