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drivers: spi: nrfx_spim: Add support for device runtime PM

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Enable the device runtime power management on the SPIM shim.

Signed-off-by: Adam Kondraciuk <adam.kondraciuk@nordicsemi.no>
Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>
This commit is contained in:
Adam Kondraciuk 2024-07-09 10:02:46 +02:00 • committed by Benjamin Cabé
commit e8a327329a
1 changed files with 41 additions and 42 deletions
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83
drivers/spi/spi_nrfx_spim.c
View file

@ -8,6 +8,7 @@
#include <zephyr/drivers/spi/rtio.h>
#include <zephyr/cache.h>
#include <zephyr/pm/device.h>
#include <zephyr/pm/device_runtime.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/mem_mgmt/mem_attr.h>
#include <soc.h>
@ -90,6 +91,8 @@ static inline void finalize_spi_transaction(const struct device *dev, bool deact
if (NRF_SPIM_IS_320MHZ_SPIM(reg) && !(dev_data->ctx.config->operation & SPI_HOLD_ON_CS)) {
nrfy_spim_disable(reg);
}
pm_device_runtime_put_async(dev, K_NO_WAIT);
}
static inline uint32_t get_nrf_spim_frequency(uint32_t frequency)
@ -460,6 +463,7 @@ static int transceive(const struct device *dev,
void *reg = dev_config->spim.p_reg;
int error;
pm_device_runtime_get(dev);
spi_context_lock(&dev_data->ctx, asynchronous, cb, userdata, spi_cfg);
error = configure(dev, spi_cfg);
@ -571,56 +575,49 @@ static DEVICE_API(spi, spi_nrfx_driver_api) = {
.release = spi_nrfx_release,
};
#ifdef CONFIG_PM_DEVICE
static int spim_nrfx_pm_action(const struct device *dev,
enum pm_device_action action)
static void spim_resume(const struct device *dev)
{
int ret = 0;
struct spi_nrfx_data *dev_data = dev->data;
const struct spi_nrfx_config *dev_config = dev->config;
switch (action) {
case PM_DEVICE_ACTION_RESUME:
ret = pinctrl_apply_state(dev_config->pcfg,
PINCTRL_STATE_DEFAULT);
if (ret < 0) {
return ret;
}
/* nrfx_spim_init() will be called at configuration before
* the next transfer.
*/
(void)pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_DEFAULT);
/* nrfx_spim_init() will be called at configuration before
* the next transfer.
*/
#ifdef CONFIG_SOC_NRF54H20_GPD
nrf_gpd_retain_pins_set(dev_config->pcfg, false);
nrf_gpd_retain_pins_set(dev_config->pcfg, false);
#endif
}
break;
static void spim_suspend(const struct device *dev)
{
const struct spi_nrfx_config *dev_config = dev->config;
struct spi_nrfx_data *dev_data = dev->data;
case PM_DEVICE_ACTION_SUSPEND:
if (dev_data->initialized) {
nrfx_spim_uninit(&dev_config->spim);
dev_data->initialized = false;
}
#ifdef CONFIG_SOC_NRF54H20_GPD
nrf_gpd_retain_pins_set(dev_config->pcfg, true);
#endif
ret = pinctrl_apply_state(dev_config->pcfg,
PINCTRL_STATE_SLEEP);
if (ret < 0) {
return ret;
}
break;
default:
ret = -ENOTSUP;
if (dev_data->initialized) {
nrfx_spim_uninit(&dev_config->spim);
dev_data->initialized = false;
}
return ret;
}
#endif /* CONFIG_PM_DEVICE */
#ifdef CONFIG_SOC_NRF54H20_GPD
nrf_gpd_retain_pins_set(dev_config->pcfg, true);
#endif
(void)pinctrl_apply_state(dev_config->pcfg, PINCTRL_STATE_SLEEP);
}
static int spim_nrfx_pm_action(const struct device *dev, enum pm_device_action action)
{
if (action == PM_DEVICE_ACTION_RESUME) {
spim_resume(dev);
} else if (IS_ENABLED(CONFIG_PM_DEVICE) && (action == PM_DEVICE_ACTION_SUSPEND)) {
spim_suspend(dev);
} else {
return -ENOTSUP;
}
return 0;
}
static int spi_nrfx_init(const struct device *dev)
{
@ -655,10 +652,12 @@ static int spi_nrfx_init(const struct device *dev)
spi_context_unlock_unconditionally(&dev_data->ctx);
#ifdef CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58
return anomaly_58_workaround_init(dev);
#else
return 0;
err = anomaly_58_workaround_init(dev);
if (err < 0) {
return err;
}
#endif
return pm_device_driver_init(dev, spim_nrfx_pm_action);
}
/*
* We use NODELABEL here because the nrfx API requires us to call