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- /*
- * Copyright (C) 2017-2019 Alibaba Group Holding Limited
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2020-08-20 zx.chen CSI Source File for timer Driver
- */
- #include <csi_config.h>
- #include <drv_irq.h>
- #include <drv_timer.h>
- #include <dw_timer.h>
- #include <soc.h>
- #include <csi_core.h>
- #define ERR_TIMER(errno) (CSI_DRV_ERRNO_TIMER_BASE | errno)
- #define TIMER_NULL_PARAM_CHK(para) HANDLE_PARAM_CHK(para, ERR_TIMER(DRV_ERROR_PARAMETER))
- typedef struct
- {
- #ifdef CONFIG_LPM
- uint8_t timer_power_status;
- uint32_t timer_regs_saved[2];
- #endif
- uint8_t idx;
- uint32_t base;
- uint32_t irq;
- timer_event_cb_t cb_event;
- uint32_t timeout; ///< the set time (us)
- uint32_t timeout_flag;
- } dw_timer_priv_t;
- extern int32_t target_get_timer_count(void);
- extern int32_t target_get_timer(int32_t idx, uint32_t *base, uint32_t *irq, void **handler);
- static dw_timer_priv_t timer_instance[CONFIG_TIMER_NUM];
- /**
- \brief Make all the timers in the idle state.
- \param[in] pointer to timer register base
- */
- static void timer_deactive_control(dw_timer_reg_t *addr)
- {
- /* stop the corresponding timer */
- addr->TxControl &= ~DW_TIMER_TXCONTROL_ENABLE;
- /* Disable interrupt. */
- addr->TxControl |= DW_TIMER_TXCONTROL_INTMASK;
- }
- void dw_timer_irqhandler(int idx)
- {
- dw_timer_priv_t *timer_priv = &timer_instance[idx];
- timer_priv->timeout_flag = 1;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- addr->TxEOI;
- if (timer_priv->cb_event)
- {
- return timer_priv->cb_event(idx, TIMER_EVENT_TIMEOUT);
- }
- }
- #ifdef CONFIG_LPM
- static void manage_clock(timer_handle_t handle, uint8_t enable)
- {
- if (handle == &timer_instance[0] || handle == &timer_instance[1])
- {
- drv_clock_manager_config(CLOCK_MANAGER_TIM, enable);
- } else if (handle == &timer_instance[3] || handle == &timer_instance[2])
- {
- drv_clock_manager_config(CLOCK_MANAGER_TIM1, enable);
- }
- }
- static void do_prepare_sleep_action(timer_handle_t handle)
- {
- dw_timer_priv_t *timer_priv = (dw_timer_priv_t *)handle;
- uint32_t *tbase = (uint32_t *)(timer_priv->base);
- registers_save(timer_priv->timer_regs_saved, tbase, 1);
- registers_save(&timer_priv->timer_regs_saved[1], tbase + 2, 1);
- }
- static void do_wakeup_sleep_action(timer_handle_t handle)
- {
- dw_timer_priv_t *timer_priv = (dw_timer_priv_t *)handle;
- uint32_t *tbase = (uint32_t *)(timer_priv->base);
- registers_restore(tbase, timer_priv->timer_regs_saved, 1);
- registers_restore(tbase + 2, &timer_priv->timer_regs_saved[1], 1);
- }
- #endif
- /**
- \brief Initialize TIMER Interface. 1. Initializes the resources needed for the TIMER interface 2.registers event callback function
- \param[in] idx instance timer index
- \param[in] cb_event Pointer to \ref timer_event_cb_t
- \return pointer to timer instance
- */
- timer_handle_t csi_timer_initialize(int32_t idx, timer_event_cb_t cb_event)
- {
- if (idx < 0 || idx >= CONFIG_TIMER_NUM)
- {
- return NULL;
- }
- uint32_t base = 0u;
- uint32_t irq = 0u;
- void *handler;
- int32_t real_idx = target_get_timer(idx, &base, &irq, &handler);
- if (real_idx != idx)
- {
- return NULL;
- }
- dw_timer_priv_t *timer_priv = &timer_instance[idx];
- timer_priv->base = base;
- timer_priv->irq = irq;
- timer_priv->idx = idx;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- timer_priv->timeout = DW_TIMER_INIT_DEFAULT_VALUE;
- #ifdef CONFIG_LPM
- csi_timer_power_control(timer_priv, DRV_POWER_FULL);
- #endif
- timer_deactive_control(addr);
- timer_priv->cb_event = cb_event;
- if (cb_event != NULL)
- {
- drv_irq_register(timer_priv->irq, handler);
- drv_irq_enable(timer_priv->irq);
- }
- return (timer_handle_t)timer_priv;
- }
- /**
- \brief De-initialize TIMER Interface. stops operation and releases the software resources used by the interface
- \param[in] handle timer handle to operate.
- \return error code
- */
- int32_t csi_timer_uninitialize(timer_handle_t handle)
- {
- TIMER_NULL_PARAM_CHK(handle);
- dw_timer_priv_t *timer_priv = (dw_timer_priv_t *)handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- timer_deactive_control(addr);
- timer_priv->cb_event = NULL;
- drv_irq_disable(timer_priv->irq);
- drv_irq_unregister(timer_priv->irq);
- #ifdef CONFIG_LPM
- csi_timer_power_control(timer_priv, DRV_POWER_OFF);
- #endif
- return 0;
- }
- int32_t csi_timer_power_control(timer_handle_t handle, csi_power_stat_e state)
- {
- TIMER_NULL_PARAM_CHK(handle);
- #ifdef CONFIG_LPM
- power_cb_t callback =
- {
- .wakeup = do_wakeup_sleep_action,
- .sleep = do_prepare_sleep_action,
- .manage_clock = manage_clock
- };
- return drv_soc_power_control(handle, state, &callback);
- #else
- return ERR_TIMER(DRV_ERROR_UNSUPPORTED);
- #endif
- }
- /**
- \brief config timer mode.
- \param[in] handle timer handle to operate.
- \param[in] mode \ref timer_mode_e
- \return error code
- */
- int32_t csi_timer_config(timer_handle_t handle, timer_mode_e mode)
- {
- TIMER_NULL_PARAM_CHK(handle);
- dw_timer_priv_t *timer_priv = handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- switch (mode)
- {
- case TIMER_MODE_FREE_RUNNING:
- addr->TxControl &= ~DW_TIMER_TXCONTROL_MODE;
- break;
- case TIMER_MODE_RELOAD:
- addr->TxControl |= DW_TIMER_TXCONTROL_MODE;
- break;
- default:
- return ERR_TIMER(DRV_ERROR_PARAMETER);
- }
- addr->TxControl |= (DW_TIMER_TXCONTROL_TRIGGER);
- return 0;
- }
- /**
- \brief Set timer.
- \param[in] instance timer instance to operate.
- \param[in] timeout the timeout value in microseconds(us).
- \return error code
- */
- int32_t csi_timer_set_timeout(timer_handle_t handle, uint32_t timeout)
- {
- TIMER_NULL_PARAM_CHK(handle);
- dw_timer_priv_t *timer_priv = handle;
- timer_priv->timeout = timeout;
- return 0;
- }
- /**
- \brief Start timer.
- \param[in] handle timer handle to operate.
- \return error code
- */
- int32_t csi_timer_start(timer_handle_t handle)
- {
- TIMER_NULL_PARAM_CHK(handle);
- dw_timer_priv_t *timer_priv = handle;
- timer_priv->timeout_flag = 0;
- uint32_t min_us = drv_get_timer_freq(timer_priv->idx) / 1000000;
- uint32_t load;
- if (((timer_priv->timeout * drv_get_timer_freq(timer_priv->idx)) / 1000000) > 0xffffffff)
- {
- return ERR_TIMER(DRV_ERROR_PARAMETER);
- }
- if (min_us)
- {
- load = (uint32_t)(timer_priv->timeout * min_us);
- } else
- {
- load = (uint32_t)(((uint64_t)(timer_priv->timeout) * drv_get_timer_freq(timer_priv->idx)) / 1000000);
- }
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- if (timer_priv->timeout == 0) {
- addr->TxLoadCount = 0xffffffff; /* load time(us) */
- } else
- {
- if ((addr->TxControl | 0x2) == 0x2) {
- addr->TxLoadCount = 0xffffffff; /* load time(us) */
- } else
- {
- addr->TxLoadCount = load; /* load time(us) */
- }
- }
- addr->TxControl &= ~DW_TIMER_TXCONTROL_ENABLE; /* disable the timer */
- addr->TxControl |= DW_TIMER_TXCONTROL_ENABLE; /* enable the corresponding timer */
- addr->TxControl &= ~DW_TIMER_TXCONTROL_INTMASK; /* enable interrupt */
- /* avoid timer bug on yunvoice soc */
- #ifdef CONFIG_CHIP_YUNVOICE
- if (addr->TxCurrentValue > addr->TxLoadCount) {
- addr->TxControl &= ~DW_TIMER_TXCONTROL_ENABLE; /* disable the timer */
- addr->TxControl |= DW_TIMER_TXCONTROL_ENABLE; /* enable the corresponding timer */
- addr->TxControl &= ~DW_TIMER_TXCONTROL_INTMASK; /* enable interrupt */
- }
- #endif
- return 0;
- }
- /**
- \brief Stop timer.
- \param[in] handle timer handle to operate.
- \return error code
- */
- int32_t csi_timer_stop(timer_handle_t handle)
- {
- TIMER_NULL_PARAM_CHK(handle);
- dw_timer_priv_t *timer_priv = handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- addr->TxControl |= DW_TIMER_TXCONTROL_INTMASK; /* enable interrupt */
- addr->TxControl &= ~DW_TIMER_TXCONTROL_ENABLE; /* disable the timer */
- return 0;
- }
- /**
- \brief suspend timer.
- \param[in] instance timer instance to operate.
- \return error code
- */
- int32_t csi_timer_suspend(timer_handle_t handle)
- {
- TIMER_NULL_PARAM_CHK(handle);
- return ERR_TIMER(DRV_ERROR_UNSUPPORTED);
- }
- /**
- \brief resume timer.
- \param[in] handle timer handle to operate.
- \return error code
- */
- int32_t csi_timer_resume(timer_handle_t handle)
- {
- TIMER_NULL_PARAM_CHK(handle);
- dw_timer_priv_t *timer_priv = handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- addr->TxControl &= ~DW_TIMER_TXCONTROL_ENABLE; /* stop the corresponding timer */
- addr->TxControl &= DW_TIMER_TXCONTROL_ENABLE; /* restart the corresponding timer */
- return 0;
- }
- /**
- \brief get timer current value
- \param[in] handle timer handle to operate.
- \param[out] value timer current value
- \return error code
- */
- int32_t csi_timer_get_current_value(timer_handle_t handle, uint32_t *value)
- {
- TIMER_NULL_PARAM_CHK(handle);
- TIMER_NULL_PARAM_CHK(value);
- dw_timer_priv_t *timer_priv = handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- *value = addr->TxCurrentValue;
- return 0;
- }
- /**
- \brief Get TIMER status.
- \param[in] handle timer handle to operate.
- \return TIMER status \ref timer_status_t
- */
- timer_status_t csi_timer_get_status(timer_handle_t handle)
- {
- timer_status_t timer_status = {0};
- if (handle == NULL)
- {
- return timer_status;
- }
- dw_timer_priv_t *timer_priv = handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- if (addr->TxControl & DW_TIMER_TXCONTROL_ENABLE)
- {
- timer_status.active = 1;
- }
- if (timer_priv->timeout_flag == 1)
- {
- timer_status.timeout = 1;
- }
- return timer_status;
- }
- /**
- \brief get timer reload value
- \param[in] handle timer handle to operate.
- \param[out] value timer reload value
- \return error code
- */
- int32_t csi_timer_get_load_value(timer_handle_t handle, uint32_t *value)
- {
- TIMER_NULL_PARAM_CHK(handle);
- TIMER_NULL_PARAM_CHK(value);
- dw_timer_priv_t *timer_priv = handle;
- dw_timer_reg_t *addr = (dw_timer_reg_t *)(timer_priv->base);
- *value = addr->TxLoadCount;
- return 0;
- }
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