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drivers: dac: Add support for the SAM4S soc series

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Add support for the SAM4S soc in the DACC driver.

Signed-off-by: Ibe Van de Veire <ibe.vandeveire@basalte.be>
This commit is contained in:
Ibe Van de Veire 2025-01-10 15:50:17 +01:00 committed by Carles Cufí
parent 31f4984f55
commit a21e9f02e6
1 changed files with 38 additions and 8 deletions
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46
drivers/dac/dac_sam.c
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@ -5,10 +5,6 @@
/** @file
* @brief DAC driver for Atmel SAM MCU family.
*
* Remarks:
* Only SAME70, SAMV71 series devices are currently supported. Please submit a
* patch.
*/
#define DT_DRV_COMPAT atmel_sam_dac
@ -25,9 +21,6 @@
#include <zephyr/irq.h>
LOG_MODULE_REGISTER(dac_sam, CONFIG_DAC_LOG_LEVEL);
BUILD_ASSERT(IS_ENABLED(CONFIG_SOC_SERIES_SAMX7X),
"Only SAMx7x series devices are currently supported.");
#define DAC_CHANNEL_NO 2
/* Device constant configuration parameters */
@ -46,7 +39,11 @@ struct dac_channel {
/* Device run time data */
struct dac_sam_dev_data {
#if defined(SOC_SERIES_SAMX7X)
struct dac_channel dac_channels[DAC_CHANNEL_NO];
#else
struct dac_channel dac_channel;
#endif
};
static void dac_sam_isr(const struct device *dev)
@ -59,6 +56,7 @@ static void dac_sam_isr(const struct device *dev)
/* Retrieve interrupt status */
int_stat = dac->DACC_ISR & dac->DACC_IMR;
#if defined(SOC_SERIES_SAMX7X)
if ((int_stat & DACC_ISR_TXRDY0) != 0) {
/* Disable Transmit Ready Interrupt */
dac->DACC_IDR = DACC_IDR_TXRDY0;
@ -69,6 +67,13 @@ static void dac_sam_isr(const struct device *dev)
dac->DACC_IDR = DACC_IDR_TXRDY1;
k_sem_give(&dev_data->dac_channels[1].sem);
}
#else
if ((int_stat & DACC_ISR_TXRDY) != 0) {
/* Disable Transmit Ready Interrupt */
dac->DACC_IDR = DACC_IDR_TXRDY;
k_sem_give(&dev_data->dac_channel.sem);
}
#endif
}
static int dac_sam_channel_setup(const struct device *dev,
@ -105,7 +110,11 @@ static int dac_sam_write_value(const struct device *dev, uint8_t channel,
return -EINVAL;
}
#if defined(SOC_SERIES_SAMX7X)
if (dac->DACC_IMR & (DACC_IMR_TXRDY0 << channel)) {
#else
if (dac->DACC_IMR & DACC_IMR_TXRDY) {
#endif
/* Attempting to send data on channel that's already in use */
return -EINVAL;
}
@ -115,6 +124,7 @@ static int dac_sam_write_value(const struct device *dev, uint8_t channel,
return -EINVAL;
}
#if defined(SOC_SERIES_SAMX7X)
k_sem_take(&dev_data->dac_channels[channel].sem, K_FOREVER);
/* Trigger conversion */
@ -122,6 +132,18 @@ static int dac_sam_write_value(const struct device *dev, uint8_t channel,
/* Enable Transmit Ready Interrupt */
dac->DACC_IER = DACC_IER_TXRDY0 << channel;
#else
k_sem_take(&dev_data->dac_channel.sem, K_FOREVER);
/* Select the channel */
dac->DACC_MR = DACC_MR_USER_SEL(channel) | DACC_MR_ONE;
/* Trigger conversion */
dac->DACC_CDR = DACC_CDR_DATA(value);
/* Enable Transmit Ready Interrupt */
dac->DACC_IER = DACC_IER_TXRDY;
#endif
return 0;
}
@ -130,16 +152,22 @@ static int dac_sam_init(const struct device *dev)
{
const struct dac_sam_dev_cfg *const dev_cfg = dev->config;
struct dac_sam_dev_data *const dev_data = dev->data;
Dacc *const dac = dev_cfg->regs;
int retval;
#if defined(SOC_SERIES_SAMX7X)
Dacc *const dac = dev_cfg->regs;
#endif
/* Configure interrupts */
dev_cfg->irq_config();
/* Initialize semaphores */
#if defined(SOC_SERIES_SAMX7X)
for (int i = 0; i < ARRAY_SIZE(dev_data->dac_channels); i++) {
k_sem_init(&dev_data->dac_channels[i].sem, 1, 1);
}
#else
k_sem_init(&dev_data->dac_channel.sem, 1, 1);
#endif
/* Enable DAC clock in PMC */
(void)clock_control_on(SAM_DT_PMC_CONTROLLER,
@ -150,8 +178,10 @@ static int dac_sam_init(const struct device *dev)
return retval;
}
#if defined(SOC_SERIES_SAMX7X)
/* Set Mode Register */
dac->DACC_MR = DACC_MR_PRESCALER(dev_cfg->prescaler);
#endif
/* Enable module's IRQ */
irq_enable(dev_cfg->irq_id);