| /****************************************************************************** |
| * |
| * Copyright (C) 2010 - 2015 Xilinx, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
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| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * Use of the Software is limited solely to applications: |
| * (a) running on a Xilinx device, or |
| * (b) that interact with a Xilinx device through a bus or interconnect. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
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| * this Software without prior written authorization from Xilinx. |
| * |
| ******************************************************************************/ |
| /*****************************************************************************/ |
| /** |
| * |
| * @file xttcps_options.c |
| * @addtogroup ttcps_v3_5 |
| * @{ |
| * |
| * This file contains functions to get or set option features for the device. |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- ------ -------- --------------------------------------------- |
| * 1.00a drg/jz 01/21/10 First release |
| * 1.01a nm 03/05/2012 Removed break statement after return to remove |
| * compilation warnings. |
| * 3.00 kvn 02/13/15 Modified code for MISRA-C:2012 compliance. |
| * </pre> |
| * |
| ******************************************************************************/ |
| |
| /***************************** Include Files *********************************/ |
| |
| #include "xttcps.h" |
| |
| /************************** Constant Definitions *****************************/ |
| |
| |
| /**************************** Type Definitions *******************************/ |
| |
| |
| /***************** Macros (Inline Functions) Definitions *********************/ |
| |
| |
| /************************** Function Prototypes ******************************/ |
| |
| |
| /************************** Variable Definitions *****************************/ |
| |
| /* |
| * Create the table of options which are processed to get/set the device |
| * options. These options are table driven to allow easy maintenance and |
| * expansion of the options. |
| */ |
| typedef struct { |
| u32 Option; |
| u32 Mask; |
| u32 Register; |
| } OptionsMap; |
| |
| static OptionsMap TmrCtrOptionsTable[] = { |
| {XTTCPS_OPTION_EXTERNAL_CLK, XTTCPS_CLK_CNTRL_SRC_MASK, |
| XTTCPS_CLK_CNTRL_OFFSET}, |
| {XTTCPS_OPTION_CLK_EDGE_NEG, XTTCPS_CLK_CNTRL_EXT_EDGE_MASK, |
| XTTCPS_CLK_CNTRL_OFFSET}, |
| {XTTCPS_OPTION_INTERVAL_MODE, XTTCPS_CNT_CNTRL_INT_MASK, |
| XTTCPS_CNT_CNTRL_OFFSET}, |
| {XTTCPS_OPTION_DECREMENT, XTTCPS_CNT_CNTRL_DECR_MASK, |
| XTTCPS_CNT_CNTRL_OFFSET}, |
| {XTTCPS_OPTION_MATCH_MODE, XTTCPS_CNT_CNTRL_MATCH_MASK, |
| XTTCPS_CNT_CNTRL_OFFSET}, |
| {XTTCPS_OPTION_WAVE_DISABLE, XTTCPS_CNT_CNTRL_EN_WAVE_MASK, |
| XTTCPS_CNT_CNTRL_OFFSET}, |
| {XTTCPS_OPTION_WAVE_POLARITY, XTTCPS_CNT_CNTRL_POL_WAVE_MASK, |
| XTTCPS_CNT_CNTRL_OFFSET}, |
| }; |
| |
| #define XTTCPS_NUM_TMRCTR_OPTIONS (sizeof(TmrCtrOptionsTable) / \ |
| sizeof(OptionsMap)) |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function sets the options for the TTC device. |
| * |
| * @param InstancePtr is a pointer to the XTtcPs instance. |
| * @param Options contains the specified options to be set. This is a bit |
| * mask where a 1 means to turn the option on, and a 0 means to |
| * turn the option off. One or more bit values may be contained |
| * in the mask. See the bit definitions named XTTCPS_*_OPTION in |
| * the file xttcps.h. |
| * |
| * @return |
| * - XST_SUCCESS if options are successfully set. |
| * - XST_FAILURE if any of the options are unknown. |
| * |
| * @note None |
| * |
| ******************************************************************************/ |
| s32 XTtcPs_SetOptions(XTtcPs *InstancePtr, u32 Options) |
| { |
| u32 CountReg; |
| u32 ClockReg; |
| u32 Index; |
| s32 Status = XST_SUCCESS; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| ClockReg = XTtcPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XTTCPS_CLK_CNTRL_OFFSET); |
| CountReg = XTtcPs_ReadReg(InstancePtr->Config.BaseAddress, |
| XTTCPS_CNT_CNTRL_OFFSET); |
| |
| /* |
| * Loop through the options table, turning the option on or off |
| * depending on whether the bit is set in the incoming options flag. |
| */ |
| for (Index = 0U; Index < XTTCPS_NUM_TMRCTR_OPTIONS; Index++) { |
| if(Status != (s32)XST_FAILURE) { |
| if ((Options & TmrCtrOptionsTable[Index].Option) != (u32)0) { |
| |
| switch (TmrCtrOptionsTable[Index].Register) { |
| |
| case XTTCPS_CLK_CNTRL_OFFSET: |
| /* Add option */ |
| ClockReg |= TmrCtrOptionsTable[Index].Mask; |
| break; |
| |
| case XTTCPS_CNT_CNTRL_OFFSET: |
| /* Add option */ |
| CountReg |= TmrCtrOptionsTable[Index].Mask; |
| break; |
| |
| default: |
| Status = XST_FAILURE; |
| break; |
| } |
| } |
| else { |
| switch (TmrCtrOptionsTable[Index].Register) { |
| |
| case XTTCPS_CLK_CNTRL_OFFSET: |
| /* Remove option*/ |
| ClockReg &= ~TmrCtrOptionsTable[Index].Mask; |
| break; |
| |
| case XTTCPS_CNT_CNTRL_OFFSET: |
| /* Remove option*/ |
| CountReg &= ~TmrCtrOptionsTable[Index].Mask; |
| break; |
| |
| default: |
| Status = XST_FAILURE; |
| break; |
| } |
| } |
| } |
| } |
| |
| /* |
| * Now write the registers. Leave it to the upper layers to restart the |
| * device. |
| */ |
| if (Status != (s32)XST_FAILURE ) { |
| XTtcPs_WriteReg(InstancePtr->Config.BaseAddress, |
| XTTCPS_CLK_CNTRL_OFFSET, ClockReg); |
| XTtcPs_WriteReg(InstancePtr->Config.BaseAddress, |
| XTTCPS_CNT_CNTRL_OFFSET, CountReg); |
| } |
| |
| return Status; |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * This function gets the settings for the options for the TTC device. |
| * |
| * @param InstancePtr is a pointer to the XTtcPs instance. |
| * |
| * @return |
| * |
| * The return u32 contains the specified options that are set. This is a bit |
| * mask where a '1' means the option is on, and a'0' means the option is off. |
| * One or more bit values may be contained in the mask. See the bit definitions |
| * named XTTCPS_*_OPTION in the file xttcps.h. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| u32 XTtcPs_GetOptions(XTtcPs *InstancePtr) |
| { |
| u32 OptionsFlag = 0U; |
| u32 Register; |
| u32 Index; |
| |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| |
| /* |
| * Loop through the options table to determine which options are set |
| */ |
| for (Index = 0U; Index < XTTCPS_NUM_TMRCTR_OPTIONS; Index++) { |
| /* |
| * Get the control register to determine which options are |
| * currently set. |
| */ |
| Register = XTtcPs_ReadReg(InstancePtr->Config.BaseAddress, |
| TmrCtrOptionsTable[Index]. |
| Register); |
| |
| if ((Register & TmrCtrOptionsTable[Index].Mask) != (u32)0) { |
| OptionsFlag |= TmrCtrOptionsTable[Index].Option; |
| } |
| } |
| |
| return OptionsFlag; |
| } |
| /** @} */ |