diff options
Diffstat (limited to 'tinyusb/hw/mcu/dialog/da1469x/src/hal_gpio.c')
| -rwxr-xr-x | tinyusb/hw/mcu/dialog/da1469x/src/hal_gpio.c | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/tinyusb/hw/mcu/dialog/da1469x/src/hal_gpio.c b/tinyusb/hw/mcu/dialog/da1469x/src/hal_gpio.c new file mode 100755 index 00000000..e105cf2b --- /dev/null +++ b/tinyusb/hw/mcu/dialog/da1469x/src/hal_gpio.c @@ -0,0 +1,478 @@ + +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +#include <assert.h> +#include <stddef.h> +#include "syscfg/syscfg.h" +#include "mcu/da1469x_hal.h" +#include <mcu/mcu.h> +#include "hal/hal_gpio.h" + +/* GPIO interrupts */ +#define HAL_GPIO_MAX_IRQ MYNEWT_VAL(MCU_GPIO_MAX_IRQ) + +#define GPIO_REG(name) ((__IO uint32_t *)(GPIO_BASE + offsetof(GPIO_Type, name))) +#define WAKEUP_REG(name) ((__IO uint32_t *)(WAKEUP_BASE + offsetof(WAKEUP_Type, name))) +#define CRG_TOP_REG(name) ((__IO uint32_t *)(CRG_TOP_BASE + offsetof(CRG_TOP_Type, name))) + +#ifndef MCU_GPIO_PORT0_PIN_COUNT +#define MCU_GPIO_PORT0_PIN_COUNT 32 +#endif + +#if (MCU_GPIO_PORT0_PIN_COUNT) == 32 +#define GPIO_PORT(pin) (((unsigned)(pin)) >> 5U) +#define GPIO_PORT_PIN(pin) (((unsigned)(pin)) & 31U) +#else +#define GPIO_PORT(pin) (((unsigned)(pin)) < MCU_GPIO_PORT0_PIN_COUNT ? 0 : 1) +#define GPIO_PORT_PIN(pin) ((unsigned)(pin) < MCU_GPIO_PORT0_PIN_COUNT ? \ + (pin) : (pin) - MCU_GPIO_PORT0_PIN_COUNT) +#endif + +#define GPIO_PIN_BIT(pin) (1 << GPIO_PORT_PIN(pin)) + +#define GPIO_PIN_DATA_REG_ADDR(pin) (GPIO_REG(P0_DATA_REG) + GPIO_PORT(pin)) +#define GPIO_PIN_DATA_REG(pin) *GPIO_PIN_DATA_REG_ADDR(pin) +#define GPIO_PIN_SET_DATA_REG_ADDR(pin) (GPIO_REG(P0_SET_DATA_REG) + GPIO_PORT(pin)) +#define GPIO_PIN_SET_DATA_REG(pin) *GPIO_PIN_SET_DATA_REG_ADDR(pin) +#define GPIO_PIN_RESET_DATA_REG_ADDR(pin) (GPIO_REG(P0_RESET_DATA_REG) + GPIO_PORT(pin)) +#define GPIO_PIN_RESET_DATA_REG(pin) *GPIO_PIN_RESET_DATA_REG_ADDR(pin) +#define GPIO_PIN_MODE_REG_ADDR(pin) (GPIO_REG(P0_00_MODE_REG) + (pin)) +#define GPIO_PIN_MODE_REG(pin) *GPIO_PIN_MODE_REG_ADDR(pin) +#define GPIO_PIN_PADPWR_CTRL_REG_ADDR(pin) (GPIO_REG(P0_PADPWR_CTRL_REG) + GPIO_PORT(pin)) +#define GPIO_PIN_PADPWR_CTRL_REG(pin) *GPIO_PIN_PADPWR_CTRL_REG_ADDR(pin) +#define GPIO_PIN_UNLATCH_ADDR(pin) (CRG_TOP_REG(P0_SET_PAD_LATCH_REG) + GPIO_PORT(pin) * 3) +#define GPIO_PIN_LATCH_ADDR(pin) (CRG_TOP_REG(P0_RESET_PAD_LATCH_REG) + GPIO_PORT(pin) * 3) + +#define WKUP_CTRL_REG_ADDR (WAKEUP_REG(WKUP_CTRL_REG)) +#define WKUP_RESET_IRQ_REG_ADDR (WAKEUP_REG(WKUP_RESET_IRQ_REG)) +#define WKUP_SELECT_PX_REG_ADDR(pin) (WAKEUP_REG(WKUP_SELECT_P0_REG) + GPIO_PORT(pin)) +#define WKUP_SELECT_PX_REG(pin) *(WKUP_SELECT_PX_REG_ADDR(pin)) +#define WKUP_POL_PX_REG_ADDR(pin) (WAKEUP_REG(WKUP_POL_P0_REG) + GPIO_PORT(pin)) +#define WKUP_POL_PX_SET_FALLING(pin) do { *(WKUP_POL_PX_REG_ADDR(pin)) |= GPIO_PIN_BIT(pin); } while (0) +#define WKUP_POL_PX_SET_RISING(pin) do { *(WKUP_POL_PX_REG_ADDR(pin)) &= ~GPIO_PIN_BIT(pin); } while (0) +#define WKUP_STAT_PX_REG_ADDR(pin) (WAKEUP_REG(WKUP_STATUS_P0_REG) + GPIO_PORT(pin)) +#define WKUP_STAT(pin) ((*(WKUP_STAT_PX_REG_ADDR(pin)) >> GPIO_PORT_PIN(pin)) & 1) +#define WKUP_CLEAR_PX_REG_ADDR(pin) (WAKEUP_REG(WKUP_CLEAR_P0_REG) + GPIO_PORT(pin)) +#define WKUP_CLEAR_PX(pin) do { (*(WKUP_CLEAR_PX_REG_ADDR(pin)) = GPIO_PIN_BIT(pin)); } while (0) +#define WKUP_SEL_GPIO_PX_REG_ADDR(pin) (WAKEUP_REG(WKUP_SEL_GPIO_P0_REG) + GPIO_PORT(pin)) +#define WKUP_SEL_GPIO_PX_REG(pin) *(WKUP_SEL_GPIO_PX_REG_ADDR(pin)) + +/* Storage for GPIO callbacks. */ +struct hal_gpio_irq { + int pin; + hal_gpio_irq_handler_t func; + void *arg; +}; + +static struct hal_gpio_irq hal_gpio_irqs[HAL_GPIO_MAX_IRQ]; + +#if MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM) >= 0 +static uint32_t g_mcu_gpio_latch_state[2]; +static uint8_t g_mcu_gpio_retained_num; +static struct da1469x_retreg g_mcu_gpio_retained[MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM)]; +#endif + +/* + * We assume that any latched pin has default configuration, i.e. was either + * not configured or was deinited. Any unlatched pin is considered to be used + * by someone. + * + * By default, all pins are assumed to have default configuration and are + * latched. This allows PD_COM to be disabled (if no other peripheral needs + * it) since we do not need GPIO mux to be active. + * + * Configuration of any pin shall be done as follows, with interrupts disabled: + * 1. call mcu_gpio_unlatch_prepare() to enable PD_COM if needed + * 2. configure pin + * 3. call mcu_gpio_unlatch() to actually unlatch pin + * + * Once pin is restored to default configuration it shall be latched again by + * calling mcu_gpio_latch(). + */ + +#if MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM) >= 0 +static void +mcu_gpio_retained_add_port(uint32_t latch_val, volatile uint32_t *base_reg) +{ + struct da1469x_retreg *retreg; + int pin; + + retreg = &g_mcu_gpio_retained[g_mcu_gpio_retained_num]; + + while (latch_val) { + assert(g_mcu_gpio_retained_num < MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM)); + + pin = __builtin_ctz(latch_val); + latch_val &= ~(1 << pin); + + da1469x_retreg_assign(retreg, &base_reg[pin]); + + g_mcu_gpio_retained_num++; + retreg++; + } +} +#endif + +static void +mcu_gpio_retained_refresh(void) +{ +#if MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM) >= 0 + g_mcu_gpio_retained_num = 0; + + mcu_gpio_retained_add_port(CRG_TOP->P0_PAD_LATCH_REG, &GPIO->P0_00_MODE_REG); + mcu_gpio_retained_add_port(CRG_TOP->P1_PAD_LATCH_REG, &GPIO->P1_00_MODE_REG); +#endif +} + +static inline void +mcu_gpio_unlatch_prepare(int pin) +{ + __HAL_ASSERT_CRITICAL(); + (void)pin; + + /* Acquire PD_COM if first pin will be unlatched */ +// if ((CRG_TOP->P0_PAD_LATCH_REG | CRG_TOP->P1_PAD_LATCH_REG) == 0) { +// da1469x_pd_acquire(MCU_PD_DOMAIN_COM); +// } +} + +static inline void +mcu_gpio_unlatch(int pin) +{ + __HAL_ASSERT_CRITICAL(); + + *GPIO_PIN_UNLATCH_ADDR(pin) = GPIO_PIN_BIT(pin); + mcu_gpio_retained_refresh(); +} + +static inline void +mcu_gpio_latch(int pin) +{ + (void)pin; +// uint32_t primask; +// uint32_t latch_pre; +// uint32_t latch_post; +// +// __HAL_DISABLE_INTERRUPTS(primask); +// +// latch_pre = CRG_TOP->P0_PAD_LATCH_REG | CRG_TOP->P1_PAD_LATCH_REG; +// +// *GPIO_PIN_LATCH_ADDR(pin) = GPIO_PIN_BIT(pin); +// mcu_gpio_retained_refresh(); +// +// latch_post = CRG_TOP->P0_PAD_LATCH_REG | CRG_TOP->P1_PAD_LATCH_REG; +// +// /* Release PD_COM if last pin was latched */ +// if (latch_pre && !latch_post) { +// da1469x_pd_release(MCU_PD_DOMAIN_COM); +// } +// +// __HAL_ENABLE_INTERRUPTS(primask); +} + +int +hal_gpio_init_in(int pin, hal_gpio_pull_t pull) +{ + volatile uint32_t *px_xx_mod_reg = GPIO_PIN_MODE_REG_ADDR(pin); + uint32_t regval; + uint32_t primask; + + switch (pull) { + case HAL_GPIO_PULL_UP: + regval = MCU_GPIO_FUNC_GPIO | MCU_GPIO_MODE_INPUT_PULLUP; + break; + case HAL_GPIO_PULL_DOWN: + regval = MCU_GPIO_FUNC_GPIO | MCU_GPIO_MODE_INPUT_PULLDOWN; + break; + case HAL_GPIO_PULL_NONE: + regval = MCU_GPIO_FUNC_GPIO | MCU_GPIO_MODE_INPUT; + break; + default: + return -1; + } + + __HAL_DISABLE_INTERRUPTS(primask); + + mcu_gpio_unlatch_prepare(pin); + + *px_xx_mod_reg = regval; + + mcu_gpio_unlatch(pin); + + __HAL_ENABLE_INTERRUPTS(primask); + + return 0; +} + +int +hal_gpio_init_out(int pin, int val) +{ + uint32_t primask; + + __HAL_DISABLE_INTERRUPTS(primask); + + mcu_gpio_unlatch_prepare(pin); + + GPIO_PIN_MODE_REG(pin) = MCU_GPIO_MODE_OUTPUT; + + if (val) { + GPIO_PIN_SET_DATA_REG(pin) = GPIO_PIN_BIT(pin); + } else { + GPIO_PIN_RESET_DATA_REG(pin) = GPIO_PIN_BIT(pin); + } + + mcu_gpio_unlatch(pin); + + __HAL_ENABLE_INTERRUPTS(primask); + + return 0; +} + +int +hal_gpio_deinit(int pin) +{ + /* Reset mode to default value and latch pin */ + GPIO_PIN_MODE_REG(pin) = 0x200; + GPIO_PIN_RESET_DATA_REG(pin) = GPIO_PIN_BIT(pin); + + mcu_gpio_latch(pin); + + return 0; +} + +void +hal_gpio_write(int pin, int val) +{ + if (val) { + GPIO_PIN_SET_DATA_REG(pin) = GPIO_PIN_BIT(pin); + } else { + GPIO_PIN_RESET_DATA_REG(pin) = GPIO_PIN_BIT(pin); + } +} + +int +hal_gpio_read(int pin) +{ + return (GPIO_PIN_DATA_REG(pin) >> GPIO_PORT_PIN(pin)) & 1; +} + +int +hal_gpio_toggle(int pin) +{ + int new_value = hal_gpio_read(pin) == 0; + + hal_gpio_write(pin, new_value); + + return new_value; +} + +static void +hal_gpio_irq_handler(void) +{ + struct hal_gpio_irq *irq; + uint32_t stat; + int i; + + *WKUP_RESET_IRQ_REG_ADDR = 1; + NVIC_ClearPendingIRQ(KEY_WKUP_GPIO_IRQn); + + for (i = 0; i < HAL_GPIO_MAX_IRQ; i++) { + irq = &hal_gpio_irqs[i]; + + /* Read latched status value from relevant GPIO port */ + stat = WKUP_STAT(irq->pin); + + if (irq->func && stat) { + irq->func(irq->arg); + } + + WKUP_CLEAR_PX(irq->pin); + } +} + +static void +hal_gpio_irq_setup(void) +{ + static uint8_t irq_setup; + int sr; + + if (!irq_setup) { + __HAL_DISABLE_INTERRUPTS(sr); + + irq_setup = 1; + + NVIC_ClearPendingIRQ(GPIO_P0_IRQn); + NVIC_ClearPendingIRQ(GPIO_P1_IRQn); + NVIC_SetVector(GPIO_P0_IRQn, (uint32_t)hal_gpio_irq_handler); + NVIC_SetVector(GPIO_P1_IRQn, (uint32_t)hal_gpio_irq_handler); + WAKEUP->WKUP_CTRL_REG = 0; + WAKEUP->WKUP_CLEAR_P0_REG = 0xFFFFFFFF; + WAKEUP->WKUP_CLEAR_P1_REG = 0x007FFFFF; + WAKEUP->WKUP_SELECT_P0_REG = 0; + WAKEUP->WKUP_SELECT_P1_REG = 0; + WAKEUP->WKUP_SEL_GPIO_P0_REG = 0; + WAKEUP->WKUP_SEL_GPIO_P1_REG = 0; + WAKEUP->WKUP_RESET_IRQ_REG = 0; + + CRG_TOP->CLK_TMR_REG |= CRG_TOP_CLK_TMR_REG_WAKEUPCT_ENABLE_Msk; + + __HAL_ENABLE_INTERRUPTS(sr); + NVIC_EnableIRQ(GPIO_P0_IRQn); + NVIC_EnableIRQ(GPIO_P1_IRQn); + } +} + +static int +hal_gpio_find_empty_slot(void) +{ + int i; + + for (i = 0; i < HAL_GPIO_MAX_IRQ; i++) { + if (hal_gpio_irqs[i].func == NULL) { + return i; + } + } + + return -1; +} + +int +hal_gpio_irq_init(int pin, hal_gpio_irq_handler_t handler, void *arg, + hal_gpio_irq_trig_t trig, hal_gpio_pull_t pull) +{ + int i; + + hal_gpio_irq_setup(); + + i = hal_gpio_find_empty_slot(); + /* If assert failed increase syscfg value MCU_GPIO_MAX_IRQ */ + assert(i >= 0); + if (i < 0) { + return -1; + } + + hal_gpio_init_in(pin, pull); + + switch (trig) { + case HAL_GPIO_TRIG_RISING: + WKUP_POL_PX_SET_RISING(pin); + break; + case HAL_GPIO_TRIG_FALLING: + WKUP_POL_PX_SET_FALLING(pin); + break; + case HAL_GPIO_TRIG_BOTH: + /* Not supported */ + default: + return -1; + } + + hal_gpio_irqs[i].pin = pin; + hal_gpio_irqs[i].func = handler; + hal_gpio_irqs[i].arg = arg; + + return 0; +} + +void +hal_gpio_irq_release(int pin) +{ + int i; + + hal_gpio_irq_disable(pin); + + for (i = 0; i < HAL_GPIO_MAX_IRQ; i++) { + if (hal_gpio_irqs[i].pin == pin && hal_gpio_irqs[i].func) { + hal_gpio_irqs[i].pin = -1; + hal_gpio_irqs[i].arg = NULL; + hal_gpio_irqs[i].func = NULL; + } + } +} + +void +hal_gpio_irq_enable(int pin) +{ + WKUP_SEL_GPIO_PX_REG(pin) |= GPIO_PIN_BIT(pin); +} + +void +hal_gpio_irq_disable(int pin) +{ + WKUP_SEL_GPIO_PX_REG(pin) &= ~GPIO_PIN_BIT(pin); + WKUP_CLEAR_PX(pin); +} + +void +mcu_gpio_set_pin_function(int pin, int mode, mcu_gpio_func func) +{ + uint32_t primask; + + __HAL_DISABLE_INTERRUPTS(primask); + + mcu_gpio_unlatch_prepare(pin); + + GPIO_PIN_MODE_REG(pin) = (func & GPIO_P0_00_MODE_REG_PID_Msk) | + (mode & (GPIO_P0_00_MODE_REG_PUPD_Msk | GPIO_P0_00_MODE_REG_PPOD_Msk)); + + mcu_gpio_unlatch(pin); + + __HAL_ENABLE_INTERRUPTS(primask); +} + +void +mcu_gpio_enter_sleep(void) +{ +#if MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM) >= 0 + if (g_mcu_gpio_retained_num == 0) { + return; + } + + g_mcu_gpio_latch_state[0] = CRG_TOP->P0_PAD_LATCH_REG; + g_mcu_gpio_latch_state[1] = CRG_TOP->P1_PAD_LATCH_REG; + + da1469x_retreg_update(g_mcu_gpio_retained, g_mcu_gpio_retained_num); + + CRG_TOP->P0_RESET_PAD_LATCH_REG = CRG_TOP_P0_PAD_LATCH_REG_P0_LATCH_EN_Msk; + CRG_TOP->P1_RESET_PAD_LATCH_REG = CRG_TOP_P1_PAD_LATCH_REG_P1_LATCH_EN_Msk; + + da1469x_pd_release(MCU_PD_DOMAIN_COM); +#endif +} + +void +mcu_gpio_exit_sleep(void) +{ +#if MYNEWT_VAL(MCU_GPIO_RETAINABLE_NUM) >= 0 + if (g_mcu_gpio_retained_num == 0) { + return; + } + + da1469x_pd_acquire(MCU_PD_DOMAIN_COM); + + da1469x_retreg_restore(g_mcu_gpio_retained, g_mcu_gpio_retained_num); + + /* Set pins states to their latched values */ + GPIO->P0_DATA_REG = GPIO->P0_DATA_REG; + GPIO->P1_DATA_REG = GPIO->P1_DATA_REG; + + CRG_TOP->P0_PAD_LATCH_REG = g_mcu_gpio_latch_state[0]; + CRG_TOP->P1_PAD_LATCH_REG = g_mcu_gpio_latch_state[1]; +#endif +} |