drivers: pinctrl: Introduce WCH CH32V20x/30x pinctrl Driver

This introduces the picntrl driver and partial bindings for
WCH CH32 V20x and V30x series

Signed-off-by: Camille BAUD <mail@massdriver.space>
This commit is contained in:
Camille BAUD 2025-02-22 15:32:14 +01:00 committed by Benjamin Cabé
commit d549af466a
6 changed files with 332 additions and 0 deletions

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@ -46,5 +46,6 @@ zephyr_library_sources_ifdef(CONFIG_PINCTRL_MCHP_MEC5 pinctrl_mchp_mec5.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_WCH_AFIO pinctrl_wch_afio.c) zephyr_library_sources_ifdef(CONFIG_PINCTRL_WCH_AFIO pinctrl_wch_afio.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_SY1XX pinctrl_sy1xx.c) zephyr_library_sources_ifdef(CONFIG_PINCTRL_SY1XX pinctrl_sy1xx.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_REALTEK_RTS5912 pinctrl_realtek_rts5912.c) zephyr_library_sources_ifdef(CONFIG_PINCTRL_REALTEK_RTS5912 pinctrl_realtek_rts5912.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_WCH_20X_30X_AFIO pinctrl_wch_20x_30x_afio.c)
add_subdirectory(renesas) add_subdirectory(renesas)

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@ -73,6 +73,7 @@ source "drivers/pinctrl/Kconfig.mec5"
source "drivers/pinctrl/Kconfig.wch_afio" source "drivers/pinctrl/Kconfig.wch_afio"
source "drivers/pinctrl/Kconfig.sy1xx" source "drivers/pinctrl/Kconfig.sy1xx"
source "drivers/pinctrl/Kconfig.realtek_rts5912" source "drivers/pinctrl/Kconfig.realtek_rts5912"
source "drivers/pinctrl/Kconfig.wch_20x_30x_afio"
rsource "renesas/Kconfig" rsource "renesas/Kconfig"

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@ -0,0 +1,9 @@
# Copyright (c) 2024 MASSDRIVER EI (massdriver.sapce)
# SPDX-License-Identifier: Apache-2.0
config PINCTRL_WCH_20X_30X_AFIO
bool "WCH AFIO pin controller driver for CH32V20x/30x"
default y
depends on DT_HAS_WCH_20X_30X_AFIO_ENABLED
help
WCH CH32V20x/30x AFIO pin controller driver.

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@ -0,0 +1,89 @@
/*
* Copyright (c) 2024 MASSDRIVER EI (massdriver.space)
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/dt-bindings/pinctrl/ch32v20x_30x-pinctrl.h>
#include <ch32fun.h>
static GPIO_TypeDef *const wch_afio_pinctrl_regs[] = {
(GPIO_TypeDef *)DT_REG_ADDR(DT_NODELABEL(gpioa)),
(GPIO_TypeDef *)DT_REG_ADDR(DT_NODELABEL(gpiob)),
(GPIO_TypeDef *)DT_REG_ADDR(DT_NODELABEL(gpioc)),
(GPIO_TypeDef *)DT_REG_ADDR(DT_NODELABEL(gpiod)),
#if DT_NODE_EXISTS(DT_NODELABEL(gpioe))
(GPIO_TypeDef *)DT_REG_ADDR(DT_NODELABEL(gpioe)),
#endif
};
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg)
{
int i;
for (i = 0; i < pin_cnt; i++, pins++) {
uint8_t port = FIELD_GET(CH32V20X_V30X_PINCTRL_PORT_MASK, pins->config);
uint8_t pin = FIELD_GET(CH32V20X_V30X_PINCTRL_PIN_MASK, pins->config);
uint8_t bit0 = FIELD_GET(CH32V20X_V30X_PINCTRL_RM_BASE_MASK, pins->config);
uint8_t pcfr_id = FIELD_GET(CH32V20X_V30X_PINCTRL_PCFR_ID_MASK, pins->config);
uint8_t remap = FIELD_GET(CH32V20X_V30X_PINCTRL_RM_MASK, pins->config);
GPIO_TypeDef *regs = wch_afio_pinctrl_regs[port];
uint32_t pcfr = pcfr_id == 0 ? AFIO->PCFR1 : AFIO->PCFR2;
uint8_t cfg = 0;
if (pins->output_high || pins->output_low) {
cfg |= (pins->slew_rate + 1);
if (pins->drive_open_drain) {
cfg |= BIT(2);
}
/* Select the alternate function */
cfg |= BIT(3);
} else {
if (pins->bias_pull_up || pins->bias_pull_down) {
cfg |= BIT(3);
}
}
if (pin < 8) {
regs->CFGLR = (regs->CFGLR & ~(0x0F << (pin * 4))) | (cfg << (pin * 4));
} else {
regs->CFGHR = (regs->CFGHR & ~(0x0F << ((pin - 8) * 4))) |
(cfg << ((pin - 8) * 4));
}
if (pins->output_high) {
regs->OUTDR |= BIT(pin);
regs->BSHR |= BIT(pin);
} else if (pins->output_low) {
regs->OUTDR |= BIT(pin);
/* Reset the pin. */
regs->BSHR |= BIT(pin + 16);
} else {
regs->OUTDR &= ~BIT(pin);
if (pins->bias_pull_up) {
regs->BSHR = BIT(pin);
}
if (pins->bias_pull_down) {
regs->BCR = BIT(pin);
}
}
pcfr |= remap << bit0;
if (pcfr_id == 0) {
AFIO->PCFR1 = pcfr;
} else {
AFIO->PCFR2 = pcfr;
}
if (bit0 == CH32V20X_V30X_PINMUX_USART1_RM) {
pcfr = AFIO->PCFR2;
pcfr |= ((uint32_t)((remap >> 1) & 1)
<< (CH32V20X_V30X_PINMUX_USART1_RM1 & 0x1F));
AFIO->PCFR2 = pcfr;
}
}
return 0;
}

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@ -0,0 +1,52 @@
# Copyright (c) 2024 Michael Hope
# SPDX-License-Identifier: Apache-2.0
description: WCH CH32V20x/30x AFIO
compatible: "wch,20x_30x-afio"
include: base.yaml
properties:
reg:
required: true
"#address-cells":
required: true
const: 1
"#size-cells":
required: true
const: 1
child-binding:
description: |
Each child node defines the configuration for a particular state.
child-binding:
description: |
The grandchild nodes group pins that share the same pin configuration.
include:
- name: pincfg-node.yaml
property-allowlist:
- bias-high-impedance
- bias-pull-up
- bias-pull-down
- drive-open-drain
- drive-push-pull
- output-high
- output-low
properties:
slew-rate:
type: string
default: "max-speed-2mhz"
enum:
- "max-speed-10mhz"
- "max-speed-2mhz"
- "max-speed-50mhz"
pinmux:
required: true
type: array
description: |
An array of pins sharing the same group properties. The pins should
be defined using pre-defined macros.

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@ -0,0 +1,180 @@
/*
* Copyright (c) 2024 MASSDRIVER EI (massdriver.space)
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __CH32V20X_V30X_PINCTRL_H__
#define __CH32V20X_V30X_PINCTRL_H__
#define CH32V20X_V30X_PINMUX_PORT_PA 0
#define CH32V20X_V30X_PINMUX_PORT_PB 1
#define CH32V20X_V30X_PINMUX_PORT_PC 2
#define CH32V20X_V30X_PINMUX_PORT_PD 3
#define CH32V20X_V30X_PINMUX_PORT_PE 4
/*
* Defines the starting bit for the remap field.
*/
#define CH32V20X_V30X_PINMUX_SPI1_RM 0
#define CH32V20X_V30X_PINMUX_I2C1_RM 1
#define CH32V20X_V30X_PINMUX_USART1_RM 2
#define CH32V20X_V30X_PINMUX_USART2_RM 3
#define CH32V20X_V30X_PINMUX_USART3_RM 4
#define CH32V20X_V30X_PINMUX_TIM1_RM 6
#define CH32V20X_V30X_PINMUX_TIM2_RM 8
#define CH32V20X_V30X_PINMUX_TIM3_RM 10
#define CH32V20X_V30X_PINMUX_TIM4_RM 12
#define CH32V20X_V30X_PINMUX_CAN1_RM 13
#define CH32V20X_V30X_PINMUX_PD01_RM 15
#define CH32V20X_V30X_PINMUX_TIM5CH4_RM 16
#define CH32V20X_V30X_PINMUX_ETH_RM 21
#define CH32V20X_V30X_PINMUX_CAN2_RM 22
#define CH32V20X_V30X_PINMUX_RMII_RM 23
#define CH32V20X_V30X_PINMUX_SDI_RM 24
#define CH32V20X_V30X_PINMUX_SPI3_RM 28
#define CH32V20X_V30X_PINMUX_TIM8_RM (32 + 2)
#define CH32V20X_V30X_PINMUX_TIM9_RM (32 + 3)
#define CH32V20X_V30X_PINMUX_TIM10_RM (32 + 5)
#define CH32V20X_V30X_PINMUX_USART4_RM (32 + 16)
#define CH32V20X_V30X_PINMUX_USART5_RM (32 + 18)
#define CH32V20X_V30X_PINMUX_USART6_RM (32 + 20)
#define CH32V20X_V30X_PINMUX_USART7_RM (32 + 22)
#define CH32V20X_V30X_PINMUX_USART8_RM (32 + 24)
#define CH32V20X_V30X_PINMUX_USART1_RM1 (32 + 26)
/* Port number with 0-4 */
#define CH32V20X_V30X_PINCTRL_PORT_SHIFT 0
#define CH32V20X_V30X_PINCTRL_PORT_MASK GENMASK(2, 0)
/* Pin number 0-15 */
#define CH32V20X_V30X_PINCTRL_PIN_SHIFT 3
#define CH32V20X_V30X_PINCTRL_PIN_MASK GENMASK(6, 3)
/* Base remap bit 0-31 */
#define CH32V20X_V30X_PINCTRL_RM_BASE_SHIFT 7
#define CH32V20X_V30X_PINCTRL_RM_BASE_MASK GENMASK(11, 7)
/* Remap Register ID */
#define CH32V20X_V30X_PINCTRL_PCFR_ID_SHIFT 12
#define CH32V20X_V30X_PINCTRL_PCFR_ID_MASK GENMASK(12, 12)
/* Function remapping ID 0-3 */
#define CH32V20X_V30X_PINCTRL_RM_SHIFT 13
#define CH32V20X_V30X_PINCTRL_RM_MASK GENMASK(14, 13)
#define CH32V20X_V30X_PINMUX_DEFINE(port, pin, rm, remapping) \
((CH32V20X_V30X_PINMUX_PORT_##port << CH32V20X_V30X_PINCTRL_PORT_SHIFT) | \
(pin << CH32V20X_V30X_PINCTRL_PIN_SHIFT) | \
(CH32V20X_V30X_PINMUX_##rm##_RM << CH32V20X_V30X_PINCTRL_RM_BASE_SHIFT) | \
(remapping << CH32V20X_V30X_PINCTRL_RM_SHIFT))
/* Pin swaps.
* Warning: Some of those do not apply to all packages.
* Verify using reference manual and use CH32V20X_V30X_PINMUX_DEFINE directly if needed.
*/
#define USART1_CK_PA8_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 8, USART1, 0)
#define USART1_CK_PA8_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 8, USART1, 1)
#define USART1_CK_PA10_2 CH32V20X_V30X_PINMUX_DEFINE(PA, 10, USART1, 2)
#define USART1_CK_PA5_3 CH32V20X_V30X_PINMUX_DEFINE(PA, 5, USART1, 3)
#define USART1_TX_PA9_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 9, USART1, 0)
#define USART1_TX_PB6_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 6, USART1, 1)
#define USART1_TX_PB15_2 CH32V20X_V30X_PINMUX_DEFINE(PB, 15, USART1, 2)
#define USART1_TX_PA6_3 CH32V20X_V30X_PINMUX_DEFINE(PA, 6, USART1, 3)
#define USART1_RX_PA10_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 10, USART1, 0)
#define USART1_RX_PB7_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 7, USART1, 1)
#define USART1_RX_PA8_2 CH32V20X_V30X_PINMUX_DEFINE(PA, 8, USART1, 2)
#define USART1_RX_PA7_3 CH32V20X_V30X_PINMUX_DEFINE(PA, 7, USART1, 3)
#define USART1_CTS_PA11_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 11, USART1, 0)
#define USART1_CTS_PA11_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 11, USART1, 1)
#define USART1_CTS_PA5_2 CH32V20X_V30X_PINMUX_DEFINE(PA, 5, USART1, 2)
#define USART1_CTS_PC4_3 CH32V20X_V30X_PINMUX_DEFINE(PC, 4, USART1, 3)
#define USART1_RTS_PA12_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 12, USART1, 0)
#define USART1_RTS_PA12_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 12, USART1, 1)
#define USART1_RTS_PA9_2 CH32V20X_V30X_PINMUX_DEFINE(PA, 9, USART1, 2)
#define USART1_RTS_PC5_3 CH32V20X_V30X_PINMUX_DEFINE(PC, 5, USART1, 3)
#define USART2_CK_PA4_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 4, USART2, 0)
#define USART2_CK_PD7_1 CH32V20X_V30X_PINMUX_DEFINE(PD, 7, USART2, 1)
#define USART2_TX_PA2_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 2, USART2, 0)
#define USART2_TX_PD5_1 CH32V20X_V30X_PINMUX_DEFINE(PD, 5, USART2, 1)
#define USART2_RX_PA3_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 3, USART2, 0)
#define USART2_RX_PD6_1 CH32V20X_V30X_PINMUX_DEFINE(PD, 6, USART2, 1)
#define USART2_CTS_PA0_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 0, USART2, 0)
#define USART2_CTS_PD3_1 CH32V20X_V30X_PINMUX_DEFINE(PD, 3, USART2, 1)
#define USART2_RTS_PA1_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 1, USART2, 0)
#define USART2_RTS_PD4_1 CH32V20X_V30X_PINMUX_DEFINE(PD, 4, USART2, 1)
#define USART3_CK_PB12_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 12, USART3, 0)
#define USART3_CK_PC12_1 CH32V20X_V30X_PINMUX_DEFINE(PC, 12, USART3, 1)
#define USART3_CK_PD10_2 CH32V20X_V30X_PINMUX_DEFINE(PD, 10, USART3, 2)
#define USART3_CK_PD10_3 CH32V20X_V30X_PINMUX_DEFINE(PD, 10, USART3, 3)
#define USART3_TX_PB10_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 10, USART3, 0)
#define USART3_TX_PC10_1 CH32V20X_V30X_PINMUX_DEFINE(PC, 10, USART3, 1)
#define USART3_TX_PA13_2 CH32V20X_V30X_PINMUX_DEFINE(PA, 13, USART3, 2)
#define USART3_TX_PD8_3 CH32V20X_V30X_PINMUX_DEFINE(PD, 8, USART3, 3)
#define USART3_RX_PB11_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 11, USART3, 0)
#define USART3_RX_PC11_1 CH32V20X_V30X_PINMUX_DEFINE(PC, 11, USART3, 1)
#define USART3_RX_PA14_2 CH32V20X_V30X_PINMUX_DEFINE(PA, 14, USART3, 2)
#define USART3_RX_PD9_3 CH32V20X_V30X_PINMUX_DEFINE(PD, 9, USART3, 3)
#define USART3_CTS_PB13_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 13, USART3, 0)
#define USART3_CTS_PB13_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 13, USART3, 1)
#define USART3_CTS_PD11_2 CH32V20X_V30X_PINMUX_DEFINE(PD, 11, USART3, 2)
#define USART3_CTS_PD11_3 CH32V20X_V30X_PINMUX_DEFINE(PD, 11, USART3, 3)
#define USART3_RTS_PB14_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 14, USART3, 0)
#define USART3_RTS_PB14_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 14, USART3, 1)
#define USART3_RTS_PD12_2 CH32V20X_V30X_PINMUX_DEFINE(PD, 12, USART3, 2)
#define USART3_RTS_PD12_3 CH32V20X_V30X_PINMUX_DEFINE(PD, 12, USART3, 3)
#define USART4_CK_PB2_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 2, USART4, 0)
#define USART4_CK_PA6_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 6, USART4, 1)
#define USART4_TX_PB0_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 0, USART4, 0)
#define USART4_TX_PA5_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 5, USART4, 1)
#define USART4_RX_PB1_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 1, USART4, 0)
#define USART4_RX_PB5_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 5, USART4, 1)
#define USART4_CTS_PB3_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 3, USART4, 0)
#define USART4_CTS_PA7_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 7, USART4, 1)
#define USART4_RTS_PB4_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 4, USART4, 0)
#define USART4_RTS_PA15_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 15, USART4, 1)
#define USART5_TX_PC12_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 12, USART5, 0)
#define USART5_TX_PB4_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 4, USART5, 1)
#define USART5_TX_PE8_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 8, USART5, 2)
#define USART5_RX_PD2_0 CH32V20X_V30X_PINMUX_DEFINE(PD, 2, USART5, 0)
#define USART5_RX_PB5_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 5, USART5, 1)
#define USART5_RX_PE9_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 9, USART5, 2)
#define USART6_TX_PC0_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 0, USART6, 0)
#define USART6_TX_PB8_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 8, USART6, 1)
#define USART6_TX_PE10_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 10, USART6, 2)
#define USART6_RX_PC1_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 1, USART6, 0)
#define USART6_RX_PB9_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 9, USART6, 1)
#define USART6_RX_PE11_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 11, USART6, 2)
#define USART7_TX_PC2_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 2, USART7, 0)
#define USART7_TX_PA6_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 6, USART7, 1)
#define USART7_TX_PE12_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 12, USART7, 2)
#define USART7_RX_PC3_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 3, USART7, 0)
#define USART7_RX_PA7_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 7, USART7, 1)
#define USART7_RX_PE13_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 13, USART7, 2)
#define USART8_TX_PC4_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 4, USART8, 0)
#define USART8_TX_PA14_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 14, USART8, 1)
#define USART8_TX_PE14_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 14, USART8, 2)
#define USART8_RX_PC5_0 CH32V20X_V30X_PINMUX_DEFINE(PC, 5, USART8, 0)
#define USART8_RX_PA15_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 15, USART8, 1)
#define USART8_RX_PE15_2 CH32V20X_V30X_PINMUX_DEFINE(PE, 15, USART8, 2)
#define SPI1_NSS_PA4_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 4, SPI1, 0)
#define SPI1_NSS_PA15_1 CH32V20X_V30X_PINMUX_DEFINE(PA, 15, SPI1, 1)
#define SPI1_SCK_PA5_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 5, SPI1, 0)
#define SPI1_SCK_PB3_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 3, SPI1, 1)
#define SPI1_MISO_PA6_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 6, SPI1, 0)
#define SPI1_MISO_PB4_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 4, SPI1, 1)
#define SPI1_MOSI_PA7_0 CH32V20X_V30X_PINMUX_DEFINE(PA, 7, SPI1, 0)
#define SPI1_MOSI_PB5_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 5, SPI1, 1)
#define I2C1_SCL_PB6_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 6, I2C1, 0)
#define I2C1_SCL_PB8_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 8, I2C1, 1)
#define I2C1_SDA_PB7_0 CH32V20X_V30X_PINMUX_DEFINE(PB, 7, I2C1, 0)
#define I2C1_SDA_PB9_1 CH32V20X_V30X_PINMUX_DEFINE(PB, 9, I2C1, 1)
#endif /* __CH32V20X_V30X_PINCTRL_H__ */