michaelh/zephyr
1
0
Fork 0
Code Releases Activity

ite: drivers/adc: create pinmux phandle to the ADC driver node

Browse source 
Create the pinmux phandle to the ADC driver node in the
devicetree. When the pinmux_pin_set function in
adc_it8xxx2_channel_setup can refer to the setting of
this phandle. It is more flexible to use.

Signed-off-by: Tim Lin <tim2.lin@ite.corp-partner.google.com>
This commit is contained in:
Tim Lin 2021-05-20 11:09:39 +08:00 • committed by Carles Cufí
commit 8ea58d4389
11 changed files with 131 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

42
drivers/adc/adc_ite_it8xxx2.c
View file

@ -15,12 +15,22 @@ LOG_MODULE_REGISTER(adc_ite_it8xxx2);
#include <soc.h>
#include <errno.h>
#include <assert.h>
#include <dt-bindings/pinctrl/it8xxx2-pinctrl.h>
#define ADC_CONTEXT_USES_KERNEL_TIMER
#include "adc_context.h"
#define DEV_DATA(dev) ((struct adc_it8xxx2_data * const)(dev)->data)
#define DEV_CFG(dev) ((struct adc_it8xxx2_cfg * const)(dev)->config)
#define DEV_PIN(adc_ch) DT_PHA(DT_PHANDLE_BY_IDX(DT_DRV_INST(0), \
pinctrl_0, adc_ch), pinctrls, pin)
#define DEV_ALT_FUNC(adc_ch) DT_PHA(DT_PHANDLE_BY_IDX(DT_DRV_INST(0), \
pinctrl_0, adc_ch), pinctrls, alt_func)
#define DEV_PINMUX(adc_ch) DEVICE_DT_GET(DT_PHANDLE_BY_IDX(DT_NODELABEL \
(pinctrl_adc##adc_ch), pinctrls, 0))
/* ADC internal reference voltage (Unit:mV) */
#define IT8XXX2_ADC_VREF_VOL 3000
/* ADC channels disabled */
@ -52,14 +62,26 @@ struct adc_it8xxx2_data {
uint16_t *repeat_buffer;
};
/*
* Strcture adc_it8xxx2_cfg is about the setting of adc
* this config will be used at initial time
*/
struct adc_it8xxx2_cfg {
/* Pinmux control group */
const struct device *pinctrls;
/* GPIO pin */
uint8_t pin;
/* Alternate function */
uint8_t alt_fun;
};
#define ADC_IT8XXX2_REG_BASE \
((struct adc_it8xxx2_regs *)(DT_INST_REG_ADDR(0)))
static int adc_it8xxx2_channel_setup(const struct device *dev,
const struct adc_channel_cfg *channel_cfg)
{
ARG_UNUSED(dev);
const struct device *porti = DEVICE_DT_GET(DT_NODELABEL(pinmuxi));
struct adc_it8xxx2_cfg *config = DEV_CFG(dev);
if (channel_cfg->acquisition_time != ADC_ACQ_TIME_DEFAULT) {
LOG_ERR("Selected ADC acquisition time is not valid");
@ -82,7 +104,9 @@ static int adc_it8xxx2_channel_setup(const struct device *dev,
}
/* The channel is set to ADC alternate function */
pinmux_pin_set(porti, channel_cfg->channel_id, IT8XXX2_PINMUX_FUNC_1);
pinmux_pin_set(config[channel_cfg->channel_id].pinctrls,
config[channel_cfg->channel_id].pin,
config[channel_cfg->channel_id].alt_fun);
LOG_DBG("Channel setup succeeded!");
return 0;
}
@ -310,9 +334,19 @@ static struct adc_it8xxx2_data adc_it8xxx2_data_0 = {
ADC_CONTEXT_INIT_LOCK(adc_it8xxx2_data_0, ctx),
ADC_CONTEXT_INIT_SYNC(adc_it8xxx2_data_0, ctx),
};
#define ITE_DT_ITEMS_BY_CH(adc_ch, _) \
{ \
.pin = DEV_PIN(adc_ch), \
.alt_fun = DEV_ALT_FUNC(adc_ch), \
.pinctrls = DEV_PINMUX(adc_ch), \
},
static const struct adc_it8xxx2_cfg adc_it8xxx2_cfg_0[CHIP_ADC_COUNT] = {
UTIL_LISTIFY(DT_INST_PROP_LEN(0, pinctrl_0), ITE_DT_ITEMS_BY_CH, _)
};
DEVICE_DT_INST_DEFINE(0, adc_it8xxx2_init,
NULL,
&adc_it8xxx2_data_0,
NULL, PRE_KERNEL_1,
&adc_it8xxx2_cfg_0, PRE_KERNEL_1,
CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&api_it8xxx2_driver_api);