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drivers: dac: Add sam0 support to pinctrl

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This add support to pinctrl at Atmel sam0 dac driver. It updates all
boards with new pinctrl groups format and drop pinmux entries.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
This commit is contained in:
Gerson Fernando Budke 2022-03-13 12:53:30 -03:00 committed by Marti Bolivar
parent 8961172e6d
commit 978e578008
5 changed files with 22 additions and 5 deletions
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6
boards/arm/arduino_zero/arduino_zero-pinctrl.dtsi
View file

@ -6,6 +6,12 @@
#include <dt-bindings/pinctrl/samd21-da1gXabcd-pinctrl.h>
&pinctrl {
dac_default: dac_default {
group1 {
pinmux = <PA2B_DAC_VOUT>;
};
};
pwm_default: pwm_default {
group1 {
pinmux = <PA17E_TCC2_WO1>;

3
boards/arm/arduino_zero/arduino_zero.dts
View file

@ -103,6 +103,9 @@
&dac0 {
status = "okay";
pinctrl-0 = <&dac_default>;
pinctrl-names = "default";
};
&flash0 {

4
boards/arm/arduino_zero/pinmux.c
View file

@ -22,10 +22,6 @@ static int board_pinmux_init(const struct device *dev)
return -ENXIO;
}
#if DT_NODE_HAS_STATUS(DT_NODELABEL(dac0), okay) && defined(CONFIG_DAC_SAM0)
/* DAC on PA02 */
pinmux_pin_set(muxa, 2, PINMUX_FUNC_B);
#endif
return 0;
}

10
drivers/dac/dac_sam0.c
View file

@ -9,6 +9,7 @@
#include <errno.h>
#include <drivers/dac.h>
#include <drivers/pinctrl.h>
#include <soc.h>
/*
@ -23,6 +24,7 @@
struct dac_sam0_cfg {
Dac *regs;
const struct pinctrl_dev_config *pcfg;
uint8_t pm_apbc_bit;
uint8_t gclk_clkctrl_id;
uint8_t refsel;
@ -62,11 +64,17 @@ static int dac_sam0_init(const struct device *dev)
{
const struct dac_sam0_cfg *const cfg = dev->config;
Dac *regs = cfg->regs;
int retval;
/* Enable the GCLK */
GCLK->CLKCTRL.reg = cfg->gclk_clkctrl_id | GCLK_CLKCTRL_GEN_GCLK0 |
GCLK_CLKCTRL_CLKEN;
retval = pinctrl_apply_state(cfg->pcfg, PINCTRL_STATE_DEFAULT);
if (retval < 0) {
return retval;
}
/* Enable the clock in PM */
PM->APBCMASK.reg |= 1 << cfg->pm_apbc_bit;
@ -96,8 +104,10 @@ static const struct dac_driver_api api_sam0_driver_api = {
(DT_INST_ENUM_IDX(n, reference)), (0))
#define SAM0_DAC_INIT(n) \
PINCTRL_DT_INST_DEFINE(n); \
static const struct dac_sam0_cfg dac_sam0_cfg_##n = { \
.regs = (Dac *)DT_INST_REG_ADDR(n), \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n), \
.pm_apbc_bit = DT_INST_CLOCKS_CELL_BY_NAME(n, pm, bit), \
.gclk_clkctrl_id = \
DT_INST_CLOCKS_CELL_BY_NAME(n, gclk, clkctrl_id), \

4
dts/bindings/dac/atmel,sam0-dac.yaml
View file

@ -5,7 +5,9 @@ description: Atmel SAM0 family DAC
compatible: "atmel,sam0-dac"
include: dac-controller.yaml
include:
- name: dac-controller.yaml
- name: pinctrl-device.yaml
properties:
reg: