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drivers: adc: rpi_pico: Turn on clock and reset device on init

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Turning on clock via clock controller and
resetting ADC device via reset controller on initializing.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
This commit is contained in:
TOKITA Hiroshi 2023-09-08 01:57:24 +09:00 committed by Carles Cufí
parent 6ad894eb99
commit 90976db5a3
1 changed files with 46 additions and 25 deletions
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71
drivers/adc/adc_rpi_pico.c
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@ -8,7 +8,9 @@
#define DT_DRV_COMPAT raspberrypi_pico_adc
#include <zephyr/drivers/adc.h>
#include <zephyr/drivers/clock_control.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/drivers/reset.h>
#include <zephyr/logging/log.h>
#include <hardware/adc.h>
@ -36,6 +38,12 @@ struct adc_rpi_config {
const struct pinctrl_dev_config *pcfg;
/** function pointer to irq setup */
void (*irq_configure)(void);
/** Pointer to clock controller device */
const struct device *clk_dev;
/** Clock id of ADC clock */
clock_control_subsys_t clk_id;
/** Reset controller config */
const struct reset_dt_spec reset;
};
/**
@ -299,6 +307,16 @@ static int adc_rpi_init(const struct device *dev)
return ret;
}
ret = clock_control_on(config->clk_dev, config->clk_id);
if (ret < 0) {
return ret;
}
ret = reset_line_toggle_dt(&config->reset);
if (ret < 0) {
return ret;
}
config->irq_configure();
/*
@ -332,31 +350,34 @@ static int adc_rpi_init(const struct device *dev)
#define IRQ_CONFIGURE_DEFINE(idx) .irq_configure = adc_rpi_configure_func_##idx
#define ADC_RPI_INIT(idx) \
IRQ_CONFIGURE_FUNC(idx) \
PINCTRL_DT_INST_DEFINE(idx); \
static struct adc_driver_api adc_rpi_api_##idx = { \
.channel_setup = adc_rpi_channel_setup, \
.read = adc_rpi_read, \
.ref_internal = DT_INST_PROP(idx, vref_mv), \
IF_ENABLED(CONFIG_ADC_ASYNC, (.read_async = adc_rpi_read_async,)) \
}; \
static const struct adc_rpi_config adc_rpi_config_##idx = { \
.num_channels = ADC_RPI_CHANNEL_NUM, \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(idx), \
IRQ_CONFIGURE_DEFINE(idx), \
}; \
static struct adc_rpi_data adc_rpi_data_##idx = { \
ADC_CONTEXT_INIT_TIMER(adc_rpi_data_##idx, ctx), \
ADC_CONTEXT_INIT_LOCK(adc_rpi_data_##idx, ctx), \
ADC_CONTEXT_INIT_SYNC(adc_rpi_data_##idx, ctx), \
.dev = DEVICE_DT_INST_GET(idx), \
}; \
\
DEVICE_DT_INST_DEFINE(idx, adc_rpi_init, NULL, \
&adc_rpi_data_##idx, \
&adc_rpi_config_##idx, POST_KERNEL, \
CONFIG_ADC_INIT_PRIORITY, \
#define ADC_RPI_INIT(idx) \
IRQ_CONFIGURE_FUNC(idx) \
PINCTRL_DT_INST_DEFINE(idx); \
static struct adc_driver_api adc_rpi_api_##idx = { \
.channel_setup = adc_rpi_channel_setup, \
.read = adc_rpi_read, \
.ref_internal = DT_INST_PROP(idx, vref_mv), \
IF_ENABLED(CONFIG_ADC_ASYNC, (.read_async = adc_rpi_read_async,)) \
}; \
static const struct adc_rpi_config adc_rpi_config_##idx = { \
.num_channels = ADC_RPI_CHANNEL_NUM, \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(idx), \
.clk_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(idx)), \
.clk_id = (clock_control_subsys_t)DT_INST_PHA_BY_IDX(idx, clocks, 0, clk_id), \
.reset = RESET_DT_SPEC_INST_GET(idx), \
IRQ_CONFIGURE_DEFINE(idx), \
}; \
static struct adc_rpi_data adc_rpi_data_##idx = { \
ADC_CONTEXT_INIT_TIMER(adc_rpi_data_##idx, ctx), \
ADC_CONTEXT_INIT_LOCK(adc_rpi_data_##idx, ctx), \
ADC_CONTEXT_INIT_SYNC(adc_rpi_data_##idx, ctx), \
.dev = DEVICE_DT_INST_GET(idx), \
}; \
\
DEVICE_DT_INST_DEFINE(idx, adc_rpi_init, NULL, \
&adc_rpi_data_##idx, \
&adc_rpi_config_##idx, POST_KERNEL, \
CONFIG_ADC_INIT_PRIORITY, \
&adc_rpi_api_##idx)
DT_INST_FOREACH_STATUS_OKAY(ADC_RPI_INIT);