michaelh/zephyr
1
0
Fork 0
Code Releases Activity
zephyr/drivers/pinctrl/pinctrl_gecko.c
Arunmani Alagarsamy 04931a54ee drivers: pinctrl: pinctrl_gecko: Add support for using pinctrl api 
This update integrates I2C support with the pinctrl_configure_pins api
within the pinctrl_gecko driver.

Signed-off-by: Arunmani Alagarsamy <arunmani.a@capgemini.com>
2024-04-25 18:07:48 -04:00

340 lines
11 KiB
C
Raw Permalink Blame History

/*
* Copyright (c) 2023 Silicon Labs
* Copyright (c) 2024 Capgemini
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/drivers/pinctrl.h>
#include <soc_gpio.h>
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg)
{
USART_TypeDef *base = (USART_TypeDef *)reg;
uint8_t loc;
#ifdef CONFIG_SOC_FAMILY_SILABS_S1
LEUART_TypeDef *lebase = (LEUART_TypeDef *)reg;
#else
int usart_num = USART_NUM(base);
#endif
#ifdef CONFIG_I2C_GECKO
I2C_TypeDef *i2c_base = (I2C_TypeDef *)reg;
#endif
#ifdef CONFIG_UART_GECKO
struct soc_gpio_pin rxpin = {0, 0, 0, 0};
struct soc_gpio_pin txpin = {0, 0, 0, 0};
#endif /* CONFIG_UART_GECKO */
struct soc_gpio_pin pin_config = {0, 0, 0, 0};
for (uint8_t i = 0U; i < pin_cnt; i++) {
pin_config.port = GECKO_GET_PORT(pins[i]);
pin_config.pin = GECKO_GET_PIN(pins[i]);
loc = GECKO_GET_LOC(pins[i]);
switch (GECKO_GET_FUN(pins[i])) {
#ifdef CONFIG_UART_GECKO
case GECKO_FUN_UART_RX:
rxpin.port = GECKO_GET_PORT(pins[i]);
rxpin.pin = GECKO_GET_PIN(pins[i]);
rxpin.mode = gpioModeInput;
rxpin.out = 1;
GPIO_PinModeSet(rxpin.port, rxpin.pin, rxpin.mode,
rxpin.out);
break;
case GECKO_FUN_UART_TX:
txpin.port = GECKO_GET_PORT(pins[i]);
txpin.pin = GECKO_GET_PIN(pins[i]);
txpin.mode = gpioModePushPull;
txpin.out = 1;
GPIO_PinModeSet(txpin.port, txpin.pin, txpin.mode,
txpin.out);
break;
#ifdef CONFIG_SOC_FAMILY_SILABS_S1
case GECKO_FUN_UART_RTS:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_UART_CTS:
pin_config.mode = gpioModeInput;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_UART_RX_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_RXPEN;
base->ROUTELOC0 &= ~_USART_ROUTELOC0_RXLOC_MASK;
base->ROUTELOC0 |= (loc << _USART_ROUTELOC0_RXLOC_SHIFT);
break;
case GECKO_FUN_UART_TX_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_TXPEN;
base->ROUTELOC0 &= ~_USART_ROUTELOC0_TXLOC_MASK;
base->ROUTELOC0 |= (loc << _USART_ROUTELOC0_TXLOC_SHIFT);
break;
case GECKO_FUN_UART_RTS_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_RTSPEN;
base->ROUTELOC1 &= ~_USART_ROUTELOC1_RTSLOC_MASK;
base->ROUTELOC1 |= (loc << _USART_ROUTELOC1_RTSLOC_SHIFT);
break;
case GECKO_FUN_UART_CTS_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_CTSPEN;
base->ROUTELOC1 &= ~_USART_ROUTELOC1_CTSLOC_MASK;
base->ROUTELOC1 |= (loc << _USART_ROUTELOC1_CTSLOC_SHIFT);
break;
case GECKO_FUN_LEUART_RX_LOC:
lebase->ROUTEPEN |= LEUART_ROUTEPEN_RXPEN;
lebase->ROUTELOC0 &= ~_LEUART_ROUTELOC0_RXLOC_MASK;
lebase->ROUTELOC0 |= (loc << _LEUART_ROUTELOC0_RXLOC_SHIFT);
break;
case GECKO_FUN_LEUART_TX_LOC:
lebase->ROUTEPEN |= LEUART_ROUTEPEN_TXPEN;
lebase->ROUTELOC0 &= ~_LEUART_ROUTELOC0_TXLOC_MASK;
lebase->ROUTELOC0 |= (loc << _LEUART_ROUTELOC0_TXLOC_SHIFT);
break;
#else /* CONFIG_SOC_FAMILY_SILABS_S1 */
case GECKO_FUN_UART_LOC:
#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
/* For SOCs with configurable pin_cfg locations (set in SOC Kconfig) */
base->ROUTEPEN = USART_ROUTEPEN_RXPEN | USART_ROUTEPEN_TXPEN;
base->ROUTELOC0 = (loc << _USART_ROUTELOC0_TXLOC_SHIFT) |
(loc << _USART_ROUTELOC0_RXLOC_SHIFT);
base->ROUTELOC1 = _USART_ROUTELOC1_RESETVALUE;
#elif defined(USART_ROUTE_RXPEN) && defined(USART_ROUTE_TXPEN)
/* For olders SOCs with only one pin location */
base->ROUTE = USART_ROUTE_RXPEN | USART_ROUTE_TXPEN | (loc << 8);
#elif defined(GPIO_USART_ROUTEEN_RXPEN) && defined(GPIO_USART_ROUTEEN_TXPEN)
GPIO->USARTROUTE[usart_num].ROUTEEN =
GPIO_USART_ROUTEEN_TXPEN | GPIO_USART_ROUTEEN_RXPEN;
GPIO->USARTROUTE[usart_num].TXROUTE =
(txpin.pin << _GPIO_USART_TXROUTE_PIN_SHIFT) |
(txpin.port << _GPIO_USART_TXROUTE_PORT_SHIFT);
GPIO->USARTROUTE[usart_num].RXROUTE =
(rxpin.pin << _GPIO_USART_RXROUTE_PIN_SHIFT) |
(rxpin.port << _GPIO_USART_RXROUTE_PORT_SHIFT);
#endif /* CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION */
#ifdef UART_GECKO_HW_FLOW_CONTROL
/* Configure HW flow control (RTS, CTS) */
if (config->hw_flowcontrol) {
GPIO_PinModeSet(config->pin_rts.port,
config->pin_rts.pin,
config->pin_rts.mode,
config->pin_rts.out);
GPIO_PinModeSet(config->pin_cts.port,
config->pin_cts.pin,
config->pin_cts.mode,
config->pin_cts.out);
#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
config->base->ROUTEPEN =
USART_ROUTEPEN_RXPEN | USART_ROUTEPEN_TXPEN |
USART_ROUTEPEN_RTSPEN | USART_ROUTEPEN_CTSPEN;
config->base->ROUTELOC1 =
(config->loc_rts << _USART_ROUTELOC1_RTSLOC_SHIFT) |
(config->loc_cts << _USART_ROUTELOC1_CTSLOC_SHIFT);
#elif defined(GPIO_USART_ROUTEEN_RTSPEN) && defined(GPIO_USART_ROUTEEN_CTSPEN)
GPIO->USARTROUTE[usart_num].ROUTEEN =
GPIO_USART_ROUTEEN_TXPEN | GPIO_USART_ROUTEEN_RXPEN |
GPIO_USART_ROUTEPEN_RTSPEN | GPIO_USART_ROUTEPEN_CTSPEN;
GPIO->USARTROUTE[usart_num].RTSROUTE =
(config->pin_rts.pin << _GPIO_USART_RTSROUTE_PIN_SHIFT) |
(config->pin_rts.port << _GPIO_USART_RTSROUTE_PORT_SHIFT);
GPIO->USARTROUTE[usart_num].CTSROUTE =
(config->pin_cts.pin << _GPIO_USART_CTSROUTE_PIN_SHIFT) |
(config->pin_cts.port << _GPIO_USART_CTSROUTE_PORT_SHIFT);
#endif /* CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION */
}
#endif /* UART_GECKO_HW_FLOW_CONTROL */
break;
#endif /* CONFIG_SOC_FAMILY_SILABS_S1 */
#endif /* CONFIG_UART_GECKO */
#ifdef CONFIG_SPI_GECKO
#ifdef CONFIG_SOC_FAMILY_SILABS_S1
case GECKO_FUN_SPIM_SCK:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIM_MOSI:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIM_MISO:
pin_config.mode = gpioModeInput;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIM_CS:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIS_SCK:
pin_config.mode = gpioModeInput;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIS_MOSI:
pin_config.mode = gpioModeInput;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIS_MISO:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPIS_CS:
pin_config.mode = gpioModeInput;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPI_SCK_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_CLKPEN;
base->ROUTELOC0 &= ~_USART_ROUTELOC0_CLKLOC_MASK;
base->ROUTELOC0 |= (loc << _USART_ROUTELOC0_CLKLOC_SHIFT);
break;
case GECKO_FUN_SPI_MOSI_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_TXPEN;
base->ROUTELOC0 &= ~_USART_ROUTELOC0_TXLOC_MASK;
base->ROUTELOC0 |= (loc << _USART_ROUTELOC0_TXLOC_SHIFT);
break;
case GECKO_FUN_SPI_MISO_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_RXPEN;
base->ROUTELOC0 &= ~_USART_ROUTELOC0_RXLOC_MASK;
base->ROUTELOC0 |= (loc << _USART_ROUTELOC0_RXLOC_SHIFT);
break;
case GECKO_FUN_SPI_CS_LOC:
base->ROUTEPEN |= USART_ROUTEPEN_CSPEN;
base->ROUTELOC0 &= ~_USART_ROUTELOC0_CSLOC_MASK;
base->ROUTELOC0 |= (loc << _USART_ROUTELOC0_CSLOC_SHIFT);
break;
#else /* CONFIG_SOC_FAMILY_SILABS_S1 */
case GECKO_FUN_SPI_SCK:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO->USARTROUTE[usart_num].ROUTEEN |= GPIO_USART_ROUTEEN_CLKPEN;
GPIO->USARTROUTE[usart_num].CLKROUTE =
(pin_config.pin << _GPIO_USART_CLKROUTE_PIN_SHIFT) |
(pin_config.port << _GPIO_USART_CLKROUTE_PORT_SHIFT);
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPI_MOSI:
pin_config.mode = gpioModePushPull;
pin_config.out = 1;
GPIO->USARTROUTE[usart_num].ROUTEEN |= GPIO_USART_ROUTEEN_TXPEN;
GPIO->USARTROUTE[usart_num].TXROUTE =
(pin_config.pin << _GPIO_USART_TXROUTE_PIN_SHIFT) |
(pin_config.port << _GPIO_USART_TXROUTE_PORT_SHIFT);
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_SPI_MISO:
pin_config.mode = gpioModeInput;
pin_config.out = 1;
GPIO->USARTROUTE[usart_num].ROUTEEN |= GPIO_USART_ROUTEEN_RXPEN;
GPIO->USARTROUTE[usart_num].RXROUTE =
(pin_config.pin << _GPIO_USART_RXROUTE_PIN_SHIFT) |
(pin_config.port << _GPIO_USART_RXROUTE_PORT_SHIFT);
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
#endif /* CONFIG_SOC_FAMILY_SILABS_S1 */
#endif /* CONFIG_SPI_GECKO */
#ifdef CONFIG_I2C_GECKO
case GECKO_FUN_I2C_SDA:
pin_config.mode = gpioModeWiredAnd;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_I2C_SCL:
pin_config.mode = gpioModeWiredAnd;
pin_config.out = 1;
GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,
pin_config.out);
break;
case GECKO_FUN_I2C_SDA_LOC:
#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
i2c_base->ROUTEPEN |= I2C_ROUTEPEN_SDAPEN;
i2c_base->ROUTELOC0 &= ~_I2C_ROUTELOC0_SDALOC_MASK;
i2c_base->ROUTELOC0 |= (loc << _I2C_ROUTELOC0_SDALOC_SHIFT);
#elif defined(GPIO_I2C_ROUTEEN_SCLPEN) && defined(GPIO_I2C_ROUTEEN_SDAPEN)
GPIO->I2CROUTE[I2C_NUM(i2c_base)].ROUTEEN |= GPIO_I2C_ROUTEEN_SDAPEN;
GPIO->I2CROUTE[I2C_NUM(i2c_base)].SDAROUTE =
(pin_config.pin << _GPIO_I2C_SDAROUTE_PIN_SHIFT) |
(pin_config.port << _GPIO_I2C_SDAROUTE_PORT_SHIFT);
#else
i2c_base->ROUTE = I2C_ROUTE_SDAPEN | I2C_ROUTE_SCLPEN | (loc << 8);
#endif
break;
case GECKO_FUN_I2C_SCL_LOC:
#ifdef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
i2c_base->ROUTEPEN |= I2C_ROUTEPEN_SCLPEN;
i2c_base->ROUTELOC0 &= ~_I2C_ROUTEPEN_SCLPEN_MASK;
i2c_base->ROUTELOC0 |= (loc << _I2C_ROUTELOC0_SCLLOC_SHIFT);
#elif defined(GPIO_I2C_ROUTEEN_SCLPEN) && defined(GPIO_I2C_ROUTEEN_SDAPEN)
GPIO->I2CROUTE[I2C_NUM(i2c_base)].ROUTEEN |= GPIO_I2C_ROUTEEN_SCLPEN;
GPIO->I2CROUTE[I2C_NUM(i2c_base)].SCLROUTE =
(pin_config.pin << _GPIO_I2C_SCLROUTE_PIN_SHIFT) |
(pin_config.port << _GPIO_I2C_SCLROUTE_PORT_SHIFT);
#else
i2c_base->ROUTE = I2C_ROUTE_SDAPEN | I2C_ROUTE_SCLPEN | (loc << 8);
#endif
break;
#endif /* CONFIG_I2C_GECKO */
default:
return -ENOTSUP;
}
}
return 0;
}
View git blame Copy permalink