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Add clock reset logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2461 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-12-30 00:13:31 +00:00
parent 62925b11eb
commit 70c8b6a453
4 changed files with 322 additions and 4 deletions
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7
arch/arm/src/lpc313x/Make.defs
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@ -46,9 +46,10 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_undefinedinsn.c up_usestack.c
CGU_ASRCS =
CGU_CSRCS = lpc313x_bcrndx.c lpc313x_clkdomain.c lpc313x_clkfreq.c \
lpc313x_esrndx.c lpc313x_fdcndx.c lpc313x_freqin.c \
lpc313x_pllconfig.c lpc313x_setfreqin.c lpc313x_softreset.c
CGU_CSRCS = lpc313x_bcrndx.c lpc313x_clkdomain.c lpc313x_clkexten.c \
lpc313x_clkfreq.c lpc313x_defclk.c lpc313x_esrndx.c \
lpc313x_fdcndx.c lpc313x_freqin.c lpc313x_pllconfig.c \
lpc313x_resetclks.c lpc313x_setfreqin.c lpc313x_softreset.c
CHIP_ASRCS = $(CGU_ASRCS)
CHIP_CSRCS = lpc313x_allocateheap.c lpc313x_boot.c lpc313x_irq.c \

48
arch/arm/src/lpc313x/lpc313x_cgudrvr.h
View File

@ -45,6 +45,10 @@
************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include "up_arch.h"
#include "lpc313x_cgu.h"
@ -170,6 +174,7 @@
#define FRACDIV_BASE11_CNT 0 /* No fractional divider available */
#define CGU_NFRACDIV 24 /* Number of fractional dividers */
#define FDCNDX_INVALID -1 /* Indicates an invalid fractional
* divider index */
@ -212,7 +217,7 @@ enum lpc313x_clockid_e
/* Domain 0: SYS_BASE */
CLKID_APB0CLK = 0, /* 0 APB0_CLK */
CLKID_SBAPB1CLK, /* 1 APB1_CLK */
CLKID_APB1CLK, /* 1 APB1_CLK */
CLKID_APB2CLK, /* 2 APB2_CLK */
CLKID_APB3CLK, /* 3 APB3_CLK */
CLKID_APB4CLK, /* 4 APB4_CLK */
@ -493,6 +498,27 @@ static inline void lpc313x_disableclock(enum lpc313x_clockid_e clkid)
* Public Functions
************************************************************************/
/****************************************************************************
* Name: lpc313x_defclk
*
* Description:
* Enable the specified clock if it is one of the default clocks needed
* by the board.
*
****************************************************************************/
EXTERN bool lpc313x_defclk(enum lpc313x_clockid_e clkid);
/****************************************************************************
* Name: lpc313x_resetclks
*
* Description:
* Put all clocks into a known, initial state
*
****************************************************************************/
EXTERN void lpc313x_resetclks(void);
/****************************************************************************
* Name: lpc313x_pllconfig
*
@ -614,6 +640,26 @@ EXTERN void lpc313x_selectfreqin(enum lpc313x_domainid_e dmnid,
EXTERN uint32_t lpc313x_clkfreq(enum lpc313x_clockid_e clkid,
enum lpc313x_domainid_e dmnid);
/************************************************************************
* Name: lpc313x_enableexten
*
* Description:
* Enable external enabling for the the specified possible clocks.
*
************************************************************************/
EXTERN void lpc313x_enableexten(enum lpc313x_clockid_e clkid);
/************************************************************************
* Name: lpc313x_disableexten
*
* Description:
* Disable external enabling for the the specified possible clocks.
*
************************************************************************/
EXTERN void lpc313x_disableexten(enum lpc313x_clockid_e clkid);
#undef EXTERN
#ifdef __cplusplus
}

152
arch/arm/src/lpc313x/lpc313x_clkexten.c Executable file
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@ -0,0 +1,152 @@
/****************************************************************************
* arch/arm/src/lpc313x/lpc313x_exten.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <arch/board/board.h>
#include "lpc313x_cgudrvr.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lpc313x_enableexten
*
* Description:
* Enable external enabling for the the specified possible clocks.
*
****************************************************************************/
void lpc313x_enableexten(enum lpc313x_clockid_e clkid)
{
uint32_t regaddr;
uint32_t regval;
switch (clkid)
{
case CLKID_DMACLKGATED: /* 9 DMA_CLK_GATED */
case CLKID_EVENTROUTERPCLK: /* 31 EVENT_ROUTER_PCLK */
case CLKID_ADCPCLK: /* 32 ADC_PCLK */
case CLKID_IOCONFPCLK: /* 35 IOCONF_PCLK */
case CLKID_CGUPCLK: /* 36 CGU_PCLK */
case CLKID_SYSCREGPCLK: /* 37 SYSCREG_PCLK */
case CLKID_OTPPCLK: /* 38 OTP_PCLK (Reserved on LPC313X) */
case CLKID_PWMPCLKREGS: /* 46 PWM_PCLK_REGS */
case CLKID_PCMAPBPCLK: /* 52 PCM_APB_PCLK */
case CLKID_SPIPCLKGATED: /* 57 SPI_PCLK_GATED */
case CLKID_SPICLKGATED: /* 90 SPI_CLK_GATED */
case CLKID_PCMCLKIP: /* 71 PCM_CLK_IP */
regaddr = LPC313X_CGU_PCR(clkid);
regval = getreg32(regaddr);
regval |= CGU_PCR_EXTENEN;
putreg32(regval, regaddr);
break;
/* Otherwise, force disable for the clocks. NOTE that a larger set will
* be disabled than will be enabled.
*/
default:
lpc313x_disableexten(clkid);
break;
}
}
/****************************************************************************
* Name: lpc313x_disableexten
*
* Description:
* Disable external enabling for the the specified possible clocks.
*
****************************************************************************/
void lpc313x_disableexten(enum lpc313x_clockid_e clkid)
{
uint32_t regaddr;
uint32_t regval;
switch (clkid)
{
case CLKID_DMACLKGATED: /* 9 DMA_CLK_GATED */
case CLKID_EVENTROUTERPCLK: /* 31 EVENT_ROUTER_PCLK */
case CLKID_ADCPCLK: /* 32 ADC_PCLK */
case CLKID_WDOGPCLK: /* 34 WDOG_PCLK */
case CLKID_IOCONFPCLK: /* 35 IOCONF_PCLK */
case CLKID_CGUPCLK: /* 36 CGU_PCLK */
case CLKID_SYSCREGPCLK: /* 37 SYSCREG_PCLK */
case CLKID_OTPPCLK: /* 38 OTP_PCLK (Reserved on LPC313X) */
case CLKID_PWMPCLKREGS: /* 46 PWM_PCLK_REGS */
case CLKID_I2C0PCLK: /* 48 I2C0_PCLK */
case CLKID_I2C1PCLK: /* 49 I2C1_PCLK */
case CLKID_PCMAPBPCLK: /* 52 PCM_APB_PCLK */
case CLKID_UARTAPBCLK: /* 53 UART_APB_CLK */
case CLKID_SPIPCLKGATED: /* 57 SPI_PCLK_GATED */
case CLKID_SPICLKGATED: /* 90 SPI_CLK_GATED */
case CLKID_PCMCLKIP: /* 71 PCM_CLK_IP */
case CLKID_LCDPCLK: /* 54 LCD_PCLK */
regaddr = LPC313X_CGU_PCR(clkid);
regval = getreg32(regaddr);
regval &= ~CGU_PCR_EXTENEN;
putreg32(regval, regaddr);
break;
default:
break;
}
}

119
arch/arm/src/lpc313x/lpc313x_defclk.c Executable file
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@ -0,0 +1,119 @@
/****************************************************************************
* arch/arm/src/lpc313x/lpc313x_defclk.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <arch/board/board.h>
#include "lpc313x_cgudrvr.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lpc313x_defclk
*
* Description:
* Enable the specified clock if it is one of the default clocks needed
* by the board.
*
****************************************************************************/
bool lpc313x_defclk(enum lpc313x_clockid_e clkid)
{
uint32_t regaddr;
uint32_t regval;
bool enable;
/* Check if this clock should be enabled. This is determined by
* 3 bitsets provided by board-specific logic in board/board.h.
*/
if ((int)clkid < 32)
{
enable = ((BOARD_CLKS_0_31 & (1 << (int)clkid)) != 0);
}
else if ((int)clkid < 64)
{
enable = ((BOARD_CLKS_32_63 & (1 << ((int)clkid - 32))) != 0);
}
else
{
enable = ((BOARD_CLKS_64_92 & (1 << ((int)clkid - 64))) != 0);
}
/* Then set/clear the RUN bit in the PCR register for this clock
* accordingly.
*/
regaddr = LPC313X_CGU_PCR((int)clkid);
regval = getreg32(regaddr);
if (enable)
{
regval |= CGU_PCR_RUN;
}
else
{
regval &= ~CGU_PCR_RUN;
}
putreg32(regval, regaddr);
return enable;
}