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drivers: adc: update ambiq adc driver

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Update Ambiq adc driver to add apollo4
fixed typ of BUMBER to NUMBER
Move buffer size prio to configuring slots
and enabling the ADC
removed #if defined(CONFIG_PM_DEVICE_RUNTIME)

Signed-off-by: Richard Wheatley <richard.wheatley@ambiq.com>
This commit is contained in:
Richard Wheatley 2024-08-22 12:43:55 -05:00 • committed by Anas Nashif
commit 8561d0285d
1 changed files with 69 additions and 18 deletions
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87
drivers/adc/adc_ambiq.c
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@ -24,7 +24,7 @@ LOG_MODULE_REGISTER(adc_ambiq, CONFIG_ADC_LOG_LEVEL);
typedef int (*ambiq_adc_pwr_func_t)(void);
#define PWRCTRL_MAX_WAIT_US 5
/* Number of slots available. */
#define AMBIQ_ADC_SLOT_BUMBER AM_HAL_ADC_MAX_SLOTS
#define AMBIQ_ADC_SLOT_NUMBER AM_HAL_ADC_MAX_SLOTS
struct adc_ambiq_config {
uint32_t base;
@ -55,9 +55,11 @@ static int adc_ambiq_set_resolution(am_hal_adc_slot_prec_e *prec, uint8_t adc_re
case 12:
*prec = AM_HAL_ADC_SLOT_12BIT;
break;
#if !defined(CONFIG_SOC_SERIES_APOLLO4X)
case 14:
*prec = AM_HAL_ADC_SLOT_14BIT;
break;
#endif
default:
return -ENOTSUP;
}
@ -81,6 +83,9 @@ static int adc_ambiq_slot_config(const struct device *dev, const struct adc_sequ
ADCSlotConfig.eChannel = channel;
ADCSlotConfig.bWindowCompare = false;
ADCSlotConfig.bEnabled = true;
#if defined(CONFIG_SOC_SERIES_APOLLO4X)
ADCSlotConfig.ui32TrkCyc = AM_HAL_ADC_MIN_TRKCYC;
#endif
if (AM_HAL_STATUS_SUCCESS !=
am_hal_adc_configure_slot(data->adcHandle, ui32SlotNumber, &ADCSlotConfig)) {
LOG_ERR("configuring ADC Slot 0 failed.\n");
@ -157,9 +162,15 @@ static int adc_ambiq_start_read(const struct device *dev, const struct adc_seque
LOG_ERR("No channel selected");
return -EINVAL;
}
error = adc_ambiq_check_buffer_size(sequence, active_channels);
if (error < 0) {
return error;
}
active_channels = POPCOUNT(sequence->channels);
if (active_channels > AMBIQ_ADC_SLOT_BUMBER) {
LOG_ERR("Too many channels for sequencer. Max: %d", AMBIQ_ADC_SLOT_BUMBER);
if (active_channels > AMBIQ_ADC_SLOT_NUMBER) {
LOG_ERR("Too many channels for sequencer. Max: %d", AMBIQ_ADC_SLOT_NUMBER);
return -ENOTSUP;
}
@ -177,10 +188,6 @@ static int adc_ambiq_start_read(const struct device *dev, const struct adc_seque
/* Enable the ADC. */
am_hal_adc_enable(data->adcHandle);
error = adc_ambiq_check_buffer_size(sequence, active_channels);
if (error < 0) {
return error;
}
data->active_channels = active_channels;
data->buffer = sequence->buffer;
/* Start ADC conversion */
@ -193,25 +200,26 @@ static int adc_ambiq_start_read(const struct device *dev, const struct adc_seque
static int adc_ambiq_read(const struct device *dev, const struct adc_sequence *sequence)
{
struct adc_ambiq_data *data = dev->data;
int error;
int error = 0;
#if defined(CONFIG_PM_DEVICE_RUNTIME)
error = pm_device_runtime_get(dev);
if (error < 0) {
LOG_ERR("pm_device_runtime_get failed: %d", error);
}
#endif
adc_context_lock(&data->ctx, false, NULL);
error = adc_ambiq_start_read(dev, sequence);
adc_context_release(&data->ctx, error);
#if defined(CONFIG_PM_DEVICE_RUNTIME)
int ret = error;
error = pm_device_runtime_put(dev);
if (error < 0) {
LOG_ERR("pm_device_runtime_put failed: %d", error);
}
#endif
error = ret;
return error;
}
@ -275,8 +283,7 @@ static int adc_ambiq_init(const struct device *dev)
/* Initialize the ADC and get the handle*/
if (AM_HAL_STATUS_SUCCESS !=
am_hal_adc_initialize((cfg->base - REG_ADC_BASEADDR) / (cfg->size * 4),
&data->adcHandle)) {
am_hal_adc_initialize((cfg->base - ADC_BASE) / (cfg->size * 4), &data->adcHandle)) {
ret = -ENODEV;
LOG_ERR("Faile to initialize ADC, code:%d", ret);
return ret;
@ -288,10 +295,15 @@ static int adc_ambiq_init(const struct device *dev)
/* Set up the ADC configuration parameters. These settings are reasonable
* for accurate measurements at a low sample rate.
*/
#if !defined(CONFIG_SOC_SERIES_APOLLO4X)
ADCConfig.eClock = AM_HAL_ADC_CLKSEL_HFRC;
ADCConfig.eReference = AM_HAL_ADC_REFSEL_INT_1P5;
#else
ADCConfig.eClock = AM_HAL_ADC_CLKSEL_HFRC_24MHZ;
ADCConfig.eRepeatTrigger = AM_HAL_ADC_RPTTRIGSEL_TMR,
#endif
ADCConfig.ePolarity = AM_HAL_ADC_TRIGPOL_RISING;
ADCConfig.eTrigger = AM_HAL_ADC_TRIGSEL_SOFTWARE;
ADCConfig.eReference = AM_HAL_ADC_REFSEL_INT_1P5;
ADCConfig.eClockMode = AM_HAL_ADC_CLKMODE_LOW_POWER;
ADCConfig.ePowerMode = AM_HAL_ADC_LPMODE0;
ADCConfig.eRepeat = AM_HAL_ADC_SINGLE_SCAN;
@ -315,11 +327,40 @@ static int adc_ambiq_init(const struct device *dev)
return 0;
}
#ifdef CONFIG_ADC_ASYNC
static int adc_ambiq_read_async(const struct device *dev, const struct adc_sequence *sequence,
struct k_poll_signal *async)
{
struct adc_ambiq_data *data = dev->data;
int error = 0;
error = pm_device_runtime_get(dev);
if (error < 0) {
LOG_ERR("pm_device_runtime_get failed: %d", error);
}
adc_context_lock(&data->ctx, true, async);
error = adc_ambiq_start_read(dev, sequence);
adc_context_release(&data->ctx, error);
int ret = error;
error = pm_device_runtime_put(dev);
if (error < 0) {
LOG_ERR("pm_device_runtime_put failed: %d", error);
}
error = ret;
return error;
}
#endif
#ifdef CONFIG_PM_DEVICE
static int adc_ambiq_pm_action(const struct device *dev, enum pm_device_action action)
{
struct adc_ambiq_data *data = dev->data;
uint32_t ret;
uint32_t ret = 0;
am_hal_sysctrl_power_state_e status;
switch (action) {
@ -343,12 +384,22 @@ static int adc_ambiq_pm_action(const struct device *dev, enum pm_device_action a
}
#endif /* CONFIG_PM_DEVICE */
#define ADC_AMBIQ_DRIVER_API(n) \
static const struct adc_driver_api adc_ambiq_driver_api_##n = { \
#ifdef CONFIG_ADC_ASYNC
#define ADC_AMBIQ_DRIVER_API(n) \
static const struct adc_driver_api adc_ambiq_driver_api_##n = { \
.channel_setup = adc_ambiq_channel_setup, \
.read = adc_ambiq_read, \
.read_async = adc_ambiq_read_async, \
.ref_internal = DT_INST_PROP(n, internal_vref_mv), \
};
#else
#define ADC_AMBIQ_DRIVER_API(n) \
static const struct adc_driver_api adc_ambiq_driver_api_##n = { \
.channel_setup = adc_ambiq_channel_setup, \
.read = adc_ambiq_read, \
.ref_internal = DT_INST_PROP(n, internal_vref_mv), \
};
#endif
#define ADC_AMBIQ_INIT(n) \
PINCTRL_DT_INST_DEFINE(n); \