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drivers: rtc: stm32: use single instance driver

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This driver only supports a single instance. This commit cleans up the
device definition and indicates this.

Signed-off-by: Brett Witherspoon <brett@witherspoon.engineering>
This commit is contained in:
Brett Witherspoon 2023-09-16 16:01:07 -04:00 • committed by Fabio Baltieri
commit e363c5e26d
1 changed files with 20 additions and 23 deletions
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43
drivers/rtc/rtc_ll_stm32.c
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@ -165,23 +165,6 @@ static int rtc_stm32_init(const struct device *dev)
return err;
}
static const struct stm32_pclken rtc_clk[] = STM32_DT_INST_CLOCKS(0);
BUILD_ASSERT(DT_INST_CLOCKS_HAS_IDX(0, 1), "RTC source clock not defined in the device tree");
static const struct rtc_stm32_config rtc_config = {
#if DT_INST_CLOCKS_CELL_BY_IDX(0, 1, bus) == STM32_SRC_LSI
/* prescaler values for LSI @ 32 KHz */
.async_prescaler = 0x7F,
.sync_prescaler = 0x00F9,
#else /* DT_INST_CLOCKS_CELL_BY_IDX(0, 1, bus) == STM32_SRC_LSE */
/* prescaler values for LSE @ 32768 Hz */
.async_prescaler = 0x7F,
.sync_prescaler = 0x00FF,
#endif
.pclken = rtc_clk,
};
static int rtc_stm32_set_time(const struct device *dev, const struct rtc_time *timeptr)
{
struct rtc_stm32_data *data = dev->data;
@ -385,10 +368,24 @@ struct rtc_driver_api rtc_stm32_driver_api = {
#endif /* CONFIG_RTC_CALIBRATION */
};
#define RTC_STM32_DEV_CFG(n) \
static struct rtc_stm32_data rtc_data_##n = {}; \
\
DEVICE_DT_INST_DEFINE(n, &rtc_stm32_init, NULL, &rtc_data_##n, &rtc_config, POST_KERNEL, \
CONFIG_RTC_INIT_PRIORITY, &rtc_stm32_driver_api);
static const struct stm32_pclken rtc_clk[] = STM32_DT_INST_CLOCKS(0);
DT_INST_FOREACH_STATUS_OKAY(RTC_STM32_DEV_CFG);
BUILD_ASSERT(DT_INST_CLOCKS_HAS_IDX(0, 1), "RTC source clock not defined in the device tree");
static const struct rtc_stm32_config rtc_config = {
#if DT_INST_CLOCKS_CELL_BY_IDX(0, 1, bus) == STM32_SRC_LSI
/* prescaler values for LSI @ 32 KHz */
.async_prescaler = 0x7F,
.sync_prescaler = 0x00F9,
#else /* DT_INST_CLOCKS_CELL_BY_IDX(0, 1, bus) == STM32_SRC_LSE */
/* prescaler values for LSE @ 32768 Hz */
.async_prescaler = 0x7F,
.sync_prescaler = 0x00FF,
#endif
.pclken = rtc_clk,
};
static struct rtc_stm32_data rtc_data;
DEVICE_DT_INST_DEFINE(0, &rtc_stm32_init, NULL, &rtc_data, &rtc_config, POST_KERNEL,
CONFIG_RTC_INIT_PRIORITY, &rtc_stm32_driver_api);