initial commit

lib/amb1_sdk/soc/realtek/8195a/fwlib/hal_pwm.h

@@ -0,0 +1,70 @@
+/*
+ *  Routines to access hardware
+ *
+ *  Copyright (c) 2013 Realtek Semiconductor Corp.
+ *
+ *  This module is a confidential and proprietary property of RealTek and
+ *  possession or use of this module requires written permission of RealTek.
+ */
+
+#ifndef _HAL_PWM_H_
+#define _HAL_PWM_H_
+
+#define MAX_PWM_CTRL_PIN        4
+#ifdef CONFIG_RTL8721AM
+#define MAX_GTIMER_NUM          1
+#else
+#define MAX_GTIMER_NUM          4
+#endif
+#define MAX_DEVID_TICK          1020
+
+// the minimum tick time for G-timer is 61 us (clock source = 32768Hz, reload value=1 and reload takes extra 1T)
+//#define GTIMER_TICK_US            31   // micro-second, 1000000/32768 ~= 30.5
+#define MIN_GTIMER_TIMEOUT    61  // in micro-sec, use this value to set the g-timer to generate tick for PWM. 61=(1000000/32768)*2
+#define PWM_GTIMER_TICK_TIME    61  // in micro-sec, use this value to set the g-timer to generate tick for PWM. 61=(1000000/32768)*2
+
+typedef struct _HAL_PWM_ADAPTER_ {
+    u8 pwm_id;      // the PWM ID, 0~3
+    u8 sel;         // PWM Pin selection, 0~3
+    u8 gtimer_id;   // using G-Timer ID, there are 7 G-timer, but we prefer to use timer 3~6
+    u8 enable;      // is enabled
+//    u32 timer_value;    // the G-Timer auto-reload value, source clock is 32768Hz, reload will takes extra 1 tick. To set the time of a tick of PWM
+    u32 tick_time;  // the tick time for the G-timer
+    u32 period;    // the period of a PWM control cycle, in PWM tick
+    u32 pulsewidth;    // the pulse width in a period of a PWM control cycle, in PWM tick. To control the ratio
+//    float duty_ratio;   // the dyty ratio = pulswidth/period
+}HAL_PWM_ADAPTER, *PHAL_PWM_ADAPTER;
+
+typedef struct _HAL_PWM_GTIMER_ {
+    u32 tick_time;  // the tick time for the G-timer
+    u8 reference;   // map of referenced by PWM
+}HAL_PWM_TIMER, *PHAL_PWM_TIMER;
+
+extern HAL_Status 
+HAL_Pwm_Init(
+    HAL_PWM_ADAPTER *pPwmAdapt,
+    u32 pwm_id,
+    u32 sel
+);
+
+extern void 
+HAL_Pwm_Enable(
+    HAL_PWM_ADAPTER *pPwmAdapt
+);
+
+extern void 
+HAL_Pwm_Disable(
+    HAL_PWM_ADAPTER *pPwmAdapt
+);
+
+extern void
+HAL_Pwm_SetDuty(
+    HAL_PWM_ADAPTER *pPwmAdapt,
+    u32 period,
+    u32 pulse_width
+);
+
+
+
+#endif
+