diff options
Diffstat (limited to 'arch/arm/mach-bcmring/csp/chipc')
| -rw-r--r-- | arch/arm/mach-bcmring/csp/chipc/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-bcmring/csp/chipc/chipcHw.c | 779 | ||||
| -rw-r--r-- | arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c | 283 | ||||
| -rw-r--r-- | arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c | 125 | ||||
| -rw-r--r-- | arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c | 64 |
5 files changed, 0 insertions, 1252 deletions
diff --git a/arch/arm/mach-bcmring/csp/chipc/Makefile b/arch/arm/mach-bcmring/csp/chipc/Makefile deleted file mode 100644 index 6739527..0000000 --- a/arch/arm/mach-bcmring/csp/chipc/Makefile +++ /dev/null @@ -1 +0,0 @@ -obj-y += chipcHw.o chipcHw_str.o chipcHw_reset.o chipcHw_init.o diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw.c deleted file mode 100644 index 5050833..0000000 --- a/arch/arm/mach-bcmring/csp/chipc/chipcHw.c +++ /dev/null @@ -1,779 +0,0 @@ -/***************************************************************************** -* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved. -* -* Unless you and Broadcom execute a separate written software license -* agreement governing use of this software, this software is licensed to you -* under the terms of the GNU General Public License version 2, available at -* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). -* -* Notwithstanding the above, under no circumstances may you combine this -* software in any way with any other Broadcom software provided under a -* license other than the GPL, without Broadcom's express prior written -* consent. -*****************************************************************************/ - -/****************************************************************************/ -/** -* @file chipcHw.c -* -* @brief Low level Various CHIP clock controlling routines -* -* @note -* -* These routines provide basic clock controlling functionality only. -*/ -/****************************************************************************/ - -/* ---- Include Files ---------------------------------------------------- */ - -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/export.h> - -#include <mach/csp/chipcHw_def.h> -#include <mach/csp/chipcHw_inline.h> - -#include <mach/csp/reg.h> -#include <linux/delay.h> - -/* ---- Private Constants and Types --------------------------------------- */ - -/* VPM alignment algorithm uses this */ -#define MAX_PHASE_ADJUST_COUNT 0xFFFF /* Max number of times allowed to adjust the phase */ -#define MAX_PHASE_ALIGN_ATTEMPTS 10 /* Max number of attempt to align the phase */ - -/* Local definition of clock type */ -#define PLL_CLOCK 1 /* PLL Clock */ -#define NON_PLL_CLOCK 2 /* Divider clock */ - -static int chipcHw_divide(int num, int denom) - __attribute__ ((section(".aramtext"))); - -/****************************************************************************/ -/** -* @brief Set clock fequency for miscellaneous configurable clocks -* -* This function sets clock frequency -* -* @return Configured clock frequency in hertz -* -*/ -/****************************************************************************/ -chipcHw_freq chipcHw_getClockFrequency(chipcHw_CLOCK_e clock /* [ IN ] Configurable clock */ - ) { - uint32_t __iomem *pPLLReg = NULL; - uint32_t __iomem *pClockCtrl = NULL; - uint32_t __iomem *pDependentClock = NULL; - uint32_t vcoFreqPll1Hz = 0; /* Effective VCO frequency for PLL1 in Hz */ - uint32_t vcoFreqPll2Hz = 0; /* Effective VCO frequency for PLL2 in Hz */ - uint32_t dependentClockType = 0; - uint32_t vcoHz = 0; - - /* Get VCO frequencies */ - if ((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_MASK) != chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER) { - uint64_t adjustFreq = 0; - - vcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - ((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT); - - /* Adjusted frequency due to chipcHw_REG_PLL_DIVIDER_NDIV_f_SS */ - adjustFreq = (uint64_t) chipcHw_XTAL_FREQ_Hz * - (uint64_t) chipcHw_REG_PLL_DIVIDER_NDIV_f_SS * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, (chipcHw_REG_PLL_PREDIVIDER_P2 * (uint64_t) chipcHw_REG_PLL_DIVIDER_FRAC)); - vcoFreqPll1Hz += (uint32_t) adjustFreq; - } else { - vcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - ((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT); - } - vcoFreqPll2Hz = - chipcHw_XTAL_FREQ_Hz * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - ((readl(&pChipcHw->PLLPreDivider2) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT); - - switch (clock) { - case chipcHw_CLOCK_DDR: - pPLLReg = &pChipcHw->DDRClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ARM: - pPLLReg = &pChipcHw->ARMClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ESW: - pPLLReg = &pChipcHw->ESWClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_VPM: - pPLLReg = &pChipcHw->VPMClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ESW125: - pPLLReg = &pChipcHw->ESW125Clock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_UART: - pPLLReg = &pChipcHw->UARTClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_SDIO0: - pPLLReg = &pChipcHw->SDIO0Clock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_SDIO1: - pPLLReg = &pChipcHw->SDIO1Clock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_SPI: - pPLLReg = &pChipcHw->SPIClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ETM: - pPLLReg = &pChipcHw->ETMClock; - vcoHz = vcoFreqPll1Hz; - break; - case chipcHw_CLOCK_USB: - pPLLReg = &pChipcHw->USBClock; - vcoHz = vcoFreqPll2Hz; - break; - case chipcHw_CLOCK_LCD: - pPLLReg = &pChipcHw->LCDClock; - vcoHz = vcoFreqPll2Hz; - break; - case chipcHw_CLOCK_APM: - pPLLReg = &pChipcHw->APMClock; - vcoHz = vcoFreqPll2Hz; - break; - case chipcHw_CLOCK_BUS: - pClockCtrl = &pChipcHw->ACLKClock; - pDependentClock = &pChipcHw->ARMClock; - vcoHz = vcoFreqPll1Hz; - dependentClockType = PLL_CLOCK; - break; - case chipcHw_CLOCK_OTP: - pClockCtrl = &pChipcHw->OTPClock; - break; - case chipcHw_CLOCK_I2C: - pClockCtrl = &pChipcHw->I2CClock; - break; - case chipcHw_CLOCK_I2S0: - pClockCtrl = &pChipcHw->I2S0Clock; - break; - case chipcHw_CLOCK_RTBUS: - pClockCtrl = &pChipcHw->RTBUSClock; - pDependentClock = &pChipcHw->ACLKClock; - dependentClockType = NON_PLL_CLOCK; - break; - case chipcHw_CLOCK_APM100: - pClockCtrl = &pChipcHw->APM100Clock; - pDependentClock = &pChipcHw->APMClock; - vcoHz = vcoFreqPll2Hz; - dependentClockType = PLL_CLOCK; - break; - case chipcHw_CLOCK_TSC: - pClockCtrl = &pChipcHw->TSCClock; - break; - case chipcHw_CLOCK_LED: - pClockCtrl = &pChipcHw->LEDClock; - break; - case chipcHw_CLOCK_I2S1: - pClockCtrl = &pChipcHw->I2S1Clock; - break; - } - - if (pPLLReg) { - /* Obtain PLL clock frequency */ - if (readl(pPLLReg) & chipcHw_REG_PLL_CLOCK_BYPASS_SELECT) { - /* Return crystal clock frequency when bypassed */ - return chipcHw_XTAL_FREQ_Hz; - } else if (clock == chipcHw_CLOCK_DDR) { - /* DDR frequency is configured in PLLDivider register */ - return chipcHw_divide (vcoHz, (((readl(&pChipcHw->PLLDivider) & 0xFF000000) >> 24) ? ((readl(&pChipcHw->PLLDivider) & 0xFF000000) >> 24) : 256)); - } else { - /* From chip revision number B0, LCD clock is internally divided by 2 */ - if ((pPLLReg == &pChipcHw->LCDClock) && (chipcHw_getChipRevisionNumber() != chipcHw_REV_NUMBER_A0)) { - vcoHz >>= 1; - } - /* Obtain PLL clock frequency using VCO dividers */ - return chipcHw_divide(vcoHz, ((readl(pPLLReg) & chipcHw_REG_PLL_CLOCK_MDIV_MASK) ? (readl(pPLLReg) & chipcHw_REG_PLL_CLOCK_MDIV_MASK) : 256)); - } - } else if (pClockCtrl) { - /* Obtain divider clock frequency */ - uint32_t div; - uint32_t freq = 0; - - if (readl(pClockCtrl) & chipcHw_REG_DIV_CLOCK_BYPASS_SELECT) { - /* Return crystal clock frequency when bypassed */ - return chipcHw_XTAL_FREQ_Hz; - } else if (pDependentClock) { - /* Identify the dependent clock frequency */ - switch (dependentClockType) { - case PLL_CLOCK: - if (readl(pDependentClock) & chipcHw_REG_PLL_CLOCK_BYPASS_SELECT) { - /* Use crystal clock frequency when dependent PLL clock is bypassed */ - freq = chipcHw_XTAL_FREQ_Hz; - } else { - /* Obtain PLL clock frequency using VCO dividers */ - div = readl(pDependentClock) & chipcHw_REG_PLL_CLOCK_MDIV_MASK; - freq = div ? chipcHw_divide(vcoHz, div) : 0; - } - break; - case NON_PLL_CLOCK: - if (pDependentClock == &pChipcHw->ACLKClock) { - freq = chipcHw_getClockFrequency (chipcHw_CLOCK_BUS); - } else { - if (readl(pDependentClock) & chipcHw_REG_DIV_CLOCK_BYPASS_SELECT) { - /* Use crystal clock frequency when dependent divider clock is bypassed */ - freq = chipcHw_XTAL_FREQ_Hz; - } else { - /* Obtain divider clock frequency using XTAL dividers */ - div = readl(pDependentClock) & chipcHw_REG_DIV_CLOCK_DIV_MASK; - freq = chipcHw_divide (chipcHw_XTAL_FREQ_Hz, (div ? div : 256)); - } - } - break; - } - } else { - /* Dependent on crystal clock */ - freq = chipcHw_XTAL_FREQ_Hz; - } - - div = readl(pClockCtrl) & chipcHw_REG_DIV_CLOCK_DIV_MASK; - return chipcHw_divide(freq, (div ? div : 256)); - } - return 0; -} - -/****************************************************************************/ -/** -* @brief Set clock fequency for miscellaneous configurable clocks -* -* This function sets clock frequency -* -* @return Configured clock frequency in Hz -* -*/ -/****************************************************************************/ -chipcHw_freq chipcHw_setClockFrequency(chipcHw_CLOCK_e clock, /* [ IN ] Configurable clock */ - uint32_t freq /* [ IN ] Clock frequency in Hz */ - ) { - uint32_t __iomem *pPLLReg = NULL; - uint32_t __iomem *pClockCtrl = NULL; - uint32_t __iomem *pDependentClock = NULL; - uint32_t vcoFreqPll1Hz = 0; /* Effective VCO frequency for PLL1 in Hz */ - uint32_t desVcoFreqPll1Hz = 0; /* Desired VCO frequency for PLL1 in Hz */ - uint32_t vcoFreqPll2Hz = 0; /* Effective VCO frequency for PLL2 in Hz */ - uint32_t dependentClockType = 0; - uint32_t vcoHz = 0; - uint32_t desVcoHz = 0; - - /* Get VCO frequencies */ - if ((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_MASK) != chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER) { - uint64_t adjustFreq = 0; - - vcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - ((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT); - - /* Adjusted frequency due to chipcHw_REG_PLL_DIVIDER_NDIV_f_SS */ - adjustFreq = (uint64_t) chipcHw_XTAL_FREQ_Hz * - (uint64_t) chipcHw_REG_PLL_DIVIDER_NDIV_f_SS * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, (chipcHw_REG_PLL_PREDIVIDER_P2 * (uint64_t) chipcHw_REG_PLL_DIVIDER_FRAC)); - vcoFreqPll1Hz += (uint32_t) adjustFreq; - - /* Desired VCO frequency */ - desVcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - (((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) + 1); - } else { - vcoFreqPll1Hz = desVcoFreqPll1Hz = chipcHw_XTAL_FREQ_Hz * - chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - ((readl(&pChipcHw->PLLPreDivider) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT); - } - vcoFreqPll2Hz = chipcHw_XTAL_FREQ_Hz * chipcHw_divide(chipcHw_REG_PLL_PREDIVIDER_P1, chipcHw_REG_PLL_PREDIVIDER_P2) * - ((readl(&pChipcHw->PLLPreDivider2) & chipcHw_REG_PLL_PREDIVIDER_NDIV_MASK) >> - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT); - - switch (clock) { - case chipcHw_CLOCK_DDR: - /* Configure the DDR_ctrl:BUS ratio settings */ - { - REG_LOCAL_IRQ_SAVE; - /* Dvide DDR_phy by two to obtain DDR_ctrl clock */ - writel((readl(&pChipcHw->DDRClock) & ~chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_MASK) | ((((freq / 2) / chipcHw_getClockFrequency(chipcHw_CLOCK_BUS)) - 1) << chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_SHIFT), &pChipcHw->DDRClock); - REG_LOCAL_IRQ_RESTORE; - } - pPLLReg = &pChipcHw->DDRClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ARM: - pPLLReg = &pChipcHw->ARMClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ESW: - pPLLReg = &pChipcHw->ESWClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_VPM: - /* Configure the VPM:BUS ratio settings */ - { - REG_LOCAL_IRQ_SAVE; - writel((readl(&pChipcHw->VPMClock) & ~chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_MASK) | ((chipcHw_divide (freq, chipcHw_getClockFrequency(chipcHw_CLOCK_BUS)) - 1) << chipcHw_REG_PLL_CLOCK_TO_BUS_RATIO_SHIFT), &pChipcHw->VPMClock); - REG_LOCAL_IRQ_RESTORE; - } - pPLLReg = &pChipcHw->VPMClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ESW125: - pPLLReg = &pChipcHw->ESW125Clock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_UART: - pPLLReg = &pChipcHw->UARTClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_SDIO0: - pPLLReg = &pChipcHw->SDIO0Clock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_SDIO1: - pPLLReg = &pChipcHw->SDIO1Clock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_SPI: - pPLLReg = &pChipcHw->SPIClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_ETM: - pPLLReg = &pChipcHw->ETMClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - break; - case chipcHw_CLOCK_USB: - pPLLReg = &pChipcHw->USBClock; - vcoHz = vcoFreqPll2Hz; - desVcoHz = vcoFreqPll2Hz; - break; - case chipcHw_CLOCK_LCD: - pPLLReg = &pChipcHw->LCDClock; - vcoHz = vcoFreqPll2Hz; - desVcoHz = vcoFreqPll2Hz; - break; - case chipcHw_CLOCK_APM: - pPLLReg = &pChipcHw->APMClock; - vcoHz = vcoFreqPll2Hz; - desVcoHz = vcoFreqPll2Hz; - break; - case chipcHw_CLOCK_BUS: - pClockCtrl = &pChipcHw->ACLKClock; - pDependentClock = &pChipcHw->ARMClock; - vcoHz = vcoFreqPll1Hz; - desVcoHz = desVcoFreqPll1Hz; - dependentClockType = PLL_CLOCK; - break; - case chipcHw_CLOCK_OTP: - pClockCtrl = &pChipcHw->OTPClock; - break; - case chipcHw_CLOCK_I2C: - pClockCtrl = &pChipcHw->I2CClock; - break; - case chipcHw_CLOCK_I2S0: - pClockCtrl = &pChipcHw->I2S0Clock; - break; - case chipcHw_CLOCK_RTBUS: - pClockCtrl = &pChipcHw->RTBUSClock; - pDependentClock = &pChipcHw->ACLKClock; - dependentClockType = NON_PLL_CLOCK; - break; - case chipcHw_CLOCK_APM100: - pClockCtrl = &pChipcHw->APM100Clock; - pDependentClock = &pChipcHw->APMClock; - vcoHz = vcoFreqPll2Hz; - desVcoHz = vcoFreqPll2Hz; - dependentClockType = PLL_CLOCK; - break; - case chipcHw_CLOCK_TSC: - pClockCtrl = &pChipcHw->TSCClock; - break; - case chipcHw_CLOCK_LED: - pClockCtrl = &pChipcHw->LEDClock; - break; - case chipcHw_CLOCK_I2S1: - pClockCtrl = &pChipcHw->I2S1Clock; - break; - } - - if (pPLLReg) { - /* Select XTAL as bypass source */ - reg32_modify_and(pPLLReg, ~chipcHw_REG_PLL_CLOCK_SOURCE_GPIO); - reg32_modify_or(pPLLReg, chipcHw_REG_PLL_CLOCK_BYPASS_SELECT); - /* For DDR settings use only the PLL divider clock */ - if (pPLLReg == &pChipcHw->DDRClock) { - /* Set M1DIV for PLL1, which controls the DDR clock */ - reg32_write(&pChipcHw->PLLDivider, (readl(&pChipcHw->PLLDivider) & 0x00FFFFFF) | ((chipcHw_REG_PLL_DIVIDER_MDIV (desVcoHz, freq)) << 24)); - /* Calculate expected frequency */ - freq = chipcHw_divide(vcoHz, (((readl(&pChipcHw->PLLDivider) & 0xFF000000) >> 24) ? ((readl(&pChipcHw->PLLDivider) & 0xFF000000) >> 24) : 256)); - } else { - /* From chip revision number B0, LCD clock is internally divided by 2 */ - if ((pPLLReg == &pChipcHw->LCDClock) && (chipcHw_getChipRevisionNumber() != chipcHw_REV_NUMBER_A0)) { - desVcoHz >>= 1; - vcoHz >>= 1; - } - /* Set MDIV to change the frequency */ - reg32_modify_and(pPLLReg, ~(chipcHw_REG_PLL_CLOCK_MDIV_MASK)); - reg32_modify_or(pPLLReg, chipcHw_REG_PLL_DIVIDER_MDIV(desVcoHz, freq)); - /* Calculate expected frequency */ - freq = chipcHw_divide(vcoHz, ((readl(pPLLReg) & chipcHw_REG_PLL_CLOCK_MDIV_MASK) ? (readl(pPLLReg) & chipcHw_REG_PLL_CLOCK_MDIV_MASK) : 256)); - } - /* Wait for for atleast 200ns as per the protocol to change frequency */ - udelay(1); - /* Do not bypass */ - reg32_modify_and(pPLLReg, ~chipcHw_REG_PLL_CLOCK_BYPASS_SELECT); - /* Return the configured frequency */ - return freq; - } else if (pClockCtrl) { - uint32_t divider = 0; - - /* Divider clock should not be bypassed */ - reg32_modify_and(pClockCtrl, - ~chipcHw_REG_DIV_CLOCK_BYPASS_SELECT); - - /* Identify the clock source */ - if (pDependentClock) { - switch (dependentClockType) { - case PLL_CLOCK: - divider = chipcHw_divide(chipcHw_divide (desVcoHz, (readl(pDependentClock) & chipcHw_REG_PLL_CLOCK_MDIV_MASK)), freq); - break; - case NON_PLL_CLOCK: - { - uint32_t sourceClock = 0; - - if (pDependentClock == &pChipcHw->ACLKClock) { - sourceClock = chipcHw_getClockFrequency (chipcHw_CLOCK_BUS); - } else { - uint32_t div = readl(pDependentClock) & chipcHw_REG_DIV_CLOCK_DIV_MASK; - sourceClock = chipcHw_divide (chipcHw_XTAL_FREQ_Hz, ((div) ? div : 256)); - } - divider = chipcHw_divide(sourceClock, freq); - } - break; - } - } else { - divider = chipcHw_divide(chipcHw_XTAL_FREQ_Hz, freq); - } - - if (divider) { - REG_LOCAL_IRQ_SAVE; - /* Set the divider to obtain the required frequency */ - writel((readl(pClockCtrl) & (~chipcHw_REG_DIV_CLOCK_DIV_MASK)) | (((divider > 256) ? chipcHw_REG_DIV_CLOCK_DIV_256 : divider) & chipcHw_REG_DIV_CLOCK_DIV_MASK), pClockCtrl); - REG_LOCAL_IRQ_RESTORE; - return freq; - } - } - - return 0; -} - -EXPORT_SYMBOL(chipcHw_setClockFrequency); - -/****************************************************************************/ -/** -* @brief Set VPM clock in sync with BUS clock for Chip Rev #A0 -* -* This function does the phase adjustment between VPM and BUS clock -* -* @return >= 0 : On success (# of adjustment required) -* -1 : On failure -* -*/ -/****************************************************************************/ -static int vpmPhaseAlignA0(void) -{ - uint32_t phaseControl; - uint32_t phaseValue; - uint32_t prevPhaseComp; - int iter = 0; - int adjustCount = 0; - int count = 0; - - for (iter = 0; (iter < MAX_PHASE_ALIGN_ATTEMPTS) && (adjustCount < MAX_PHASE_ADJUST_COUNT); iter++) { - phaseControl = (readl(&pChipcHw->VPMClock) & chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK) >> chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT; - phaseValue = 0; - prevPhaseComp = 0; - - /* Step 1: Look for falling PH_COMP transition */ - - /* Read the contents of VPM Clock resgister */ - phaseValue = readl(&pChipcHw->VPMClock); - do { - /* Store previous value of phase comparator */ - prevPhaseComp = phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP; - /* Change the value of PH_CTRL. */ - reg32_write(&pChipcHw->VPMClock, - (readl(&pChipcHw->VPMClock) & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT)); - /* Wait atleast 20 ns */ - udelay(1); - /* Toggle the LOAD_CH after phase control is written. */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - /* Read the contents of VPM Clock resgister. */ - phaseValue = readl(&pChipcHw->VPMClock); - - if ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0x0) { - phaseControl = (0x3F & (phaseControl - 1)); - } else { - /* Increment to the Phase count value for next write, if Phase is not stable. */ - phaseControl = (0x3F & (phaseControl + 1)); - } - /* Count number of adjustment made */ - adjustCount++; - } while (((prevPhaseComp == (phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP)) || /* Look for a transition */ - ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) != 0x0)) && /* Look for a falling edge */ - (adjustCount < MAX_PHASE_ADJUST_COUNT) /* Do not exceed the limit while trying */ - ); - - if (adjustCount >= MAX_PHASE_ADJUST_COUNT) { - /* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */ - return -1; - } - - /* Step 2: Keep moving forward to make sure falling PH_COMP transition was valid */ - - for (count = 0; (count < 5) && ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0); count++) { - phaseControl = (0x3F & (phaseControl + 1)); - reg32_write(&pChipcHw->VPMClock, - (readl(&pChipcHw->VPMClock) & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT)); - /* Wait atleast 20 ns */ - udelay(1); - /* Toggle the LOAD_CH after phase control is written. */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - phaseValue = readl(&pChipcHw->VPMClock); - /* Count number of adjustment made */ - adjustCount++; - } - - if (adjustCount >= MAX_PHASE_ADJUST_COUNT) { - /* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */ - return -1; - } - - if (count != 5) { - /* Detected false transition */ - continue; - } - - /* Step 3: Keep moving backward to make sure falling PH_COMP transition was stable */ - - for (count = 0; (count < 3) && ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0); count++) { - phaseControl = (0x3F & (phaseControl - 1)); - reg32_write(&pChipcHw->VPMClock, - (readl(&pChipcHw->VPMClock) & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT)); - /* Wait atleast 20 ns */ - udelay(1); - /* Toggle the LOAD_CH after phase control is written. */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - phaseValue = readl(&pChipcHw->VPMClock); - /* Count number of adjustment made */ - adjustCount++; - } - - if (adjustCount >= MAX_PHASE_ADJUST_COUNT) { - /* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */ - return -1; - } - - if (count != 3) { - /* Detected noisy transition */ - continue; - } - - /* Step 4: Keep moving backward before the original transition took place. */ - - for (count = 0; (count < 5); count++) { - phaseControl = (0x3F & (phaseControl - 1)); - reg32_write(&pChipcHw->VPMClock, - (readl(&pChipcHw->VPMClock) & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT)); - /* Wait atleast 20 ns */ - udelay(1); - /* Toggle the LOAD_CH after phase control is written. */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - phaseValue = readl(&pChipcHw->VPMClock); - /* Count number of adjustment made */ - adjustCount++; - } - - if (adjustCount >= MAX_PHASE_ADJUST_COUNT) { - /* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */ - return -1; - } - - if ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0) { - /* Detected false transition */ - continue; - } - - /* Step 5: Re discover the valid transition */ - - do { - /* Store previous value of phase comparator */ - prevPhaseComp = phaseValue; - /* Change the value of PH_CTRL. */ - reg32_write(&pChipcHw->VPMClock, - (readl(&pChipcHw->VPMClock) & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT)); - /* Wait atleast 20 ns */ - udelay(1); - /* Toggle the LOAD_CH after phase control is written. */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - /* Read the contents of VPM Clock resgister. */ - phaseValue = readl(&pChipcHw->VPMClock); - - if ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) == 0x0) { - phaseControl = (0x3F & (phaseControl - 1)); - } else { - /* Increment to the Phase count value for next write, if Phase is not stable. */ - phaseControl = (0x3F & (phaseControl + 1)); - } - - /* Count number of adjustment made */ - adjustCount++; - } while (((prevPhaseComp == (phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP)) || ((phaseValue & chipcHw_REG_PLL_CLOCK_PHASE_COMP) != 0x0)) && (adjustCount < MAX_PHASE_ADJUST_COUNT)); - - if (adjustCount >= MAX_PHASE_ADJUST_COUNT) { - /* Failed to align VPM phase after MAX_PHASE_ADJUST_COUNT tries */ - return -1; - } else { - /* Valid phase must have detected */ - break; - } - } - - /* For VPM Phase should be perfectly aligned. */ - phaseControl = (((readl(&pChipcHw->VPMClock) >> chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT) - 1) & 0x3F); - { - REG_LOCAL_IRQ_SAVE; - - writel((readl(&pChipcHw->VPMClock) & ~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT), &pChipcHw->VPMClock); - /* Load new phase value */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - - REG_LOCAL_IRQ_RESTORE; - } - /* Return the status */ - return (int)adjustCount; -} - -/****************************************************************************/ -/** -* @brief Set VPM clock in sync with BUS clock -* -* This function does the phase adjustment between VPM and BUS clock -* -* @return >= 0 : On success (# of adjustment required) -* -1 : On failure -* -*/ -/****************************************************************************/ -int chipcHw_vpmPhaseAlign(void) -{ - - if (chipcHw_getChipRevisionNumber() == chipcHw_REV_NUMBER_A0) { - return vpmPhaseAlignA0(); - } else { - uint32_t phaseControl = chipcHw_getVpmPhaseControl(); - uint32_t phaseValue = 0; - int adjustCount = 0; - - /* Disable VPM access */ - writel(readl(&pChipcHw->Spare1) & ~chipcHw_REG_SPARE1_VPM_BUS_ACCESS_ENABLE, &pChipcHw->Spare1); - /* Disable HW VPM phase alignment */ - chipcHw_vpmHwPhaseAlignDisable(); - /* Enable SW VPM phase alignment */ - chipcHw_vpmSwPhaseAlignEnable(); - /* Adjust VPM phase */ - while (adjustCount < MAX_PHASE_ADJUST_COUNT) { - phaseValue = chipcHw_getVpmHwPhaseAlignStatus(); - - /* Adjust phase control value */ - if (phaseValue > 0xF) { - /* Increment phase control value */ - phaseControl++; - } else if (phaseValue < 0xF) { - /* Decrement phase control value */ - phaseControl--; - } else { - /* Enable VPM access */ - writel(readl(&pChipcHw->Spare1) | chipcHw_REG_SPARE1_VPM_BUS_ACCESS_ENABLE, &pChipcHw->Spare1); - /* Return adjust count */ - return adjustCount; - } - /* Change the value of PH_CTRL. */ - reg32_write(&pChipcHw->VPMClock, - (readl(&pChipcHw->VPMClock) & (~chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_MASK)) | (phaseControl << chipcHw_REG_PLL_CLOCK_PHASE_CONTROL_SHIFT)); - /* Wait atleast 20 ns */ - udelay(1); - /* Toggle the LOAD_CH after phase control is written. */ - writel(readl(&pChipcHw->VPMClock) ^ chipcHw_REG_PLL_CLOCK_PHASE_UPDATE_ENABLE, &pChipcHw->VPMClock); - /* Count adjustment */ - adjustCount++; - } - } - - /* Disable VPM access */ - writel(readl(&pChipcHw->Spare1) & ~chipcHw_REG_SPARE1_VPM_BUS_ACCESS_ENABLE, &pChipcHw->Spare1); - return -1; -} - -/****************************************************************************/ -/** -* @brief Local Divide function -* -* This function does the divide -* -* @return divide value -* -*/ -/****************************************************************************/ -static int chipcHw_divide(int num, int denom) -{ - int r; - int t = 1; - - /* Shift denom and t up to the largest value to optimize algorithm */ - /* t contains the units of each divide */ - while ((denom & 0x40000000) == 0) { /* fails if denom=0 */ - denom = denom << 1; - t = t << 1; - } - - /* Initialize the result */ - r = 0; - - do { - /* Determine if there exists a positive remainder */ - if ((num - denom) >= 0) { - /* Accumlate t to the result and calculate a new remainder */ - num = num - denom; - r = r + t; - } - /* Continue to shift denom and shift t down to 0 */ - denom = denom >> 1; - t = t >> 1; - } while (t != 0); - - return r; -} diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c deleted file mode 100644 index 8377d80..0000000 --- a/arch/arm/mach-bcmring/csp/chipc/chipcHw_init.c +++ /dev/null @@ -1,283 +0,0 @@ -/***************************************************************************** -* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved. -* -* Unless you and Broadcom execute a separate written software license -* agreement governing use of this software, this software is licensed to you -* under the terms of the GNU General Public License version 2, available at -* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). -* -* Notwithstanding the above, under no circumstances may you combine this -* software in any way with any other Broadcom software provided under a -* license other than the GPL, without Broadcom's express prior written -* consent. -*****************************************************************************/ - -/****************************************************************************/ -/** -* @file chipcHw_init.c -* -* @brief Low level CHIPC PLL configuration functions -* -* @note -* -* These routines provide basic PLL controlling functionality only. -*/ -/****************************************************************************/ - -/* ---- Include Files ---------------------------------------------------- */ - -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/export.h> - -#include <mach/csp/chipcHw_def.h> -#include <mach/csp/chipcHw_inline.h> - -#include <mach/csp/reg.h> -#include <linux/delay.h> -/* ---- Private Constants and Types --------------------------------------- */ - -/* - Calculation for NDIV_i to obtain VCO frequency - ----------------------------------------------- - - Freq_vco = Freq_ref * (P2 / P1) * (PLL_NDIV_i + PLL_NDIV_f) - for Freq_vco = VCO_FREQ_MHz - Freq_ref = chipcHw_XTAL_FREQ_Hz - PLL_P1 = PLL_P2 = 1 - and - PLL_NDIV_f = 0 - - We get: - PLL_NDIV_i = Freq_vco / Freq_ref = VCO_FREQ_MHz / chipcHw_XTAL_FREQ_Hz - - Calculation for PLL MDIV to obtain frequency Freq_x for channel x - ----------------------------------------------------------------- - Freq_x = chipcHw_XTAL_FREQ_Hz * PLL_NDIV_i / PLL_MDIV_x = VCO_FREQ_MHz / PLL_MDIV_x - - PLL_MDIV_x = VCO_FREQ_MHz / Freq_x -*/ - -/* ---- Private Variables ------------------------------------------------- */ -/****************************************************************************/ -/** -* @brief Initializes the PLL2 -* -* This function initializes the PLL2 -* -*/ -/****************************************************************************/ -void chipcHw_pll2Enable(uint32_t vcoFreqHz) -{ - uint32_t pllPreDivider2 = 0; - - { - REG_LOCAL_IRQ_SAVE; - writel(chipcHw_REG_PLL_CONFIG_D_RESET | - chipcHw_REG_PLL_CONFIG_A_RESET, - &pChipcHw->PLLConfig2); - - pllPreDivider2 = chipcHw_REG_PLL_PREDIVIDER_POWER_DOWN | - chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER | - (chipcHw_REG_PLL_PREDIVIDER_NDIV_i(vcoFreqHz) << - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) | - (chipcHw_REG_PLL_PREDIVIDER_P1 << - chipcHw_REG_PLL_PREDIVIDER_P1_SHIFT) | - (chipcHw_REG_PLL_PREDIVIDER_P2 << - chipcHw_REG_PLL_PREDIVIDER_P2_SHIFT); - - /* Enable CHIPC registers to control the PLL */ - writel(readl(&pChipcHw->PLLStatus) | chipcHw_REG_PLL_STATUS_CONTROL_ENABLE, &pChipcHw->PLLStatus); - - /* Set pre divider to get desired VCO frequency */ - writel(pllPreDivider2, &pChipcHw->PLLPreDivider2); - /* Set NDIV Frac */ - writel(chipcHw_REG_PLL_DIVIDER_NDIV_f, &pChipcHw->PLLDivider2); - - /* This has to be removed once the default values are fixed for PLL2. */ - writel(0x38000700, &pChipcHw->PLLControl12); - writel(0x00000015, &pChipcHw->PLLControl22); - - /* Reset PLL2 */ - if (vcoFreqHz > chipcHw_REG_PLL_CONFIG_VCO_SPLIT_FREQ) { - writel(chipcHw_REG_PLL_CONFIG_D_RESET | - chipcHw_REG_PLL_CONFIG_A_RESET | - chipcHw_REG_PLL_CONFIG_VCO_1601_3200 | - chipcHw_REG_PLL_CONFIG_POWER_DOWN, - &pChipcHw->PLLConfig2); - } else { - writel(chipcHw_REG_PLL_CONFIG_D_RESET | - chipcHw_REG_PLL_CONFIG_A_RESET | - chipcHw_REG_PLL_CONFIG_VCO_800_1600 | - chipcHw_REG_PLL_CONFIG_POWER_DOWN, - &pChipcHw->PLLConfig2); - } - REG_LOCAL_IRQ_RESTORE; - } - - /* Insert certain amount of delay before deasserting ARESET. */ - udelay(1); - - { - REG_LOCAL_IRQ_SAVE; - /* Remove analog reset and Power on the PLL */ - writel(readl(&pChipcHw->PLLConfig2) & - ~(chipcHw_REG_PLL_CONFIG_A_RESET | - chipcHw_REG_PLL_CONFIG_POWER_DOWN), - &pChipcHw->PLLConfig2); - - REG_LOCAL_IRQ_RESTORE; - - } - - /* Wait until PLL is locked */ - while (!(readl(&pChipcHw->PLLStatus2) & chipcHw_REG_PLL_STATUS_LOCKED)) - ; - - { - REG_LOCAL_IRQ_SAVE; - /* Remove digital reset */ - writel(readl(&pChipcHw->PLLConfig2) & - ~chipcHw_REG_PLL_CONFIG_D_RESET, - &pChipcHw->PLLConfig2); - - REG_LOCAL_IRQ_RESTORE; - } -} - -EXPORT_SYMBOL(chipcHw_pll2Enable); - -/****************************************************************************/ -/** -* @brief Initializes the PLL1 -* -* This function initializes the PLL1 -* -*/ -/****************************************************************************/ -void chipcHw_pll1Enable(uint32_t vcoFreqHz, chipcHw_SPREAD_SPECTRUM_e ssSupport) -{ - uint32_t pllPreDivider = 0; - - { - REG_LOCAL_IRQ_SAVE; - - writel(chipcHw_REG_PLL_CONFIG_D_RESET | - chipcHw_REG_PLL_CONFIG_A_RESET, - &pChipcHw->PLLConfig); - /* Setting VCO frequency */ - if (ssSupport == chipcHw_SPREAD_SPECTRUM_ALLOW) { - pllPreDivider = - chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_MASH_1_8 | - ((chipcHw_REG_PLL_PREDIVIDER_NDIV_i(vcoFreqHz) - - 1) << chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) | - (chipcHw_REG_PLL_PREDIVIDER_P1 << - chipcHw_REG_PLL_PREDIVIDER_P1_SHIFT) | - (chipcHw_REG_PLL_PREDIVIDER_P2 << - chipcHw_REG_PLL_PREDIVIDER_P2_SHIFT); - } else { - pllPreDivider = chipcHw_REG_PLL_PREDIVIDER_POWER_DOWN | - chipcHw_REG_PLL_PREDIVIDER_NDIV_MODE_INTEGER | - (chipcHw_REG_PLL_PREDIVIDER_NDIV_i(vcoFreqHz) << - chipcHw_REG_PLL_PREDIVIDER_NDIV_SHIFT) | - (chipcHw_REG_PLL_PREDIVIDER_P1 << - chipcHw_REG_PLL_PREDIVIDER_P1_SHIFT) | - (chipcHw_REG_PLL_PREDIVIDER_P2 << - chipcHw_REG_PLL_PREDIVIDER_P2_SHIFT); - } - - /* Enable CHIPC registers to control the PLL */ - writel(readl(&pChipcHw->PLLStatus) | chipcHw_REG_PLL_STATUS_CONTROL_ENABLE, &pChipcHw->PLLStatus); - - /* Set pre divider to get desired VCO frequency */ - writel(pllPreDivider, &pChipcHw->PLLPreDivider); - /* Set NDIV Frac */ - if (ssSupport == chipcHw_SPREAD_SPECTRUM_ALLOW) { - writel(chipcHw_REG_PLL_DIVIDER_M1DIV | chipcHw_REG_PLL_DIVIDER_NDIV_f_SS, &pChipcHw->PLLDivider); - } else { - writel(chipcHw_REG_PLL_DIVIDER_M1DIV | chipcHw_REG_PLL_DIVIDER_NDIV_f, &pChipcHw->PLLDivider); - } - - /* Reset PLL1 */ - if (vcoFreqHz > chipcHw_REG_PLL_CONFIG_VCO_SPLIT_FREQ) { - writel(chipcHw_REG_PLL_CONFIG_D_RESET | chipcHw_REG_PLL_CONFIG_A_RESET | chipcHw_REG_PLL_CONFIG_VCO_1601_3200 | chipcHw_REG_PLL_CONFIG_POWER_DOWN, &pChipcHw->PLLConfig); - } else { - writel(chipcHw_REG_PLL_CONFIG_D_RESET | chipcHw_REG_PLL_CONFIG_A_RESET | chipcHw_REG_PLL_CONFIG_VCO_800_1600 | chipcHw_REG_PLL_CONFIG_POWER_DOWN, &pChipcHw->PLLConfig); - } - - REG_LOCAL_IRQ_RESTORE; - - /* Insert certain amount of delay before deasserting ARESET. */ - udelay(1); - - { - REG_LOCAL_IRQ_SAVE; - /* Remove analog reset and Power on the PLL */ - writel(readl(&pChipcHw->PLLConfig) & ~(chipcHw_REG_PLL_CONFIG_A_RESET | chipcHw_REG_PLL_CONFIG_POWER_DOWN), &pChipcHw->PLLConfig); - REG_LOCAL_IRQ_RESTORE; - } - - /* Wait until PLL is locked */ - while (!(readl(&pChipcHw->PLLStatus) & chipcHw_REG_PLL_STATUS_LOCKED) - || !(readl(&pChipcHw->PLLStatus2) & chipcHw_REG_PLL_STATUS_LOCKED)) - ; - - /* Remove digital reset */ - { - REG_LOCAL_IRQ_SAVE; - writel(readl(&pChipcHw->PLLConfig) & ~chipcHw_REG_PLL_CONFIG_D_RESET, &pChipcHw->PLLConfig); - REG_LOCAL_IRQ_RESTORE; - } - } -} - -EXPORT_SYMBOL(chipcHw_pll1Enable); - -/****************************************************************************/ -/** -* @brief Initializes the chipc module -* -* This function initializes the PLLs and core system clocks -* -*/ -/****************************************************************************/ - -void chipcHw_Init(chipcHw_INIT_PARAM_t *initParam /* [ IN ] Misc chip initialization parameter */ - ) { -#if !(defined(__KERNEL__) && !defined(STANDALONE)) - delay_init(); -#endif - - /* Do not program PLL, when warm reset */ - if (!(chipcHw_getStickyBits() & chipcHw_REG_STICKY_CHIP_WARM_RESET)) { - chipcHw_pll1Enable(initParam->pllVcoFreqHz, - initParam->ssSupport); - chipcHw_pll2Enable(initParam->pll2VcoFreqHz); - } else { - /* Clear sticky bits */ - chipcHw_clearStickyBits(chipcHw_REG_STICKY_CHIP_WARM_RESET); - } - /* Clear sticky bits */ - chipcHw_clearStickyBits(chipcHw_REG_STICKY_CHIP_SOFT_RESET); - - /* Before configuring the ARM clock, atleast we need to make sure BUS clock maintains the proper ratio with ARM clock */ - writel((readl(&pChipcHw->ACLKClock) & ~chipcHw_REG_ACLKClock_CLK_DIV_MASK) | (initParam-> armBusRatio & chipcHw_REG_ACLKClock_CLK_DIV_MASK), &pChipcHw->ACLKClock); - - /* Set various core component frequencies. The order in which this is done is important for some. */ - /* The RTBUS (DDR PHY) is derived from the BUS, and the BUS from the ARM, and VPM needs to know BUS */ - /* frequency to find its ratio with the BUS. Hence we must set the ARM first, followed by the BUS, */ - /* then VPM and RTBUS. */ - - chipcHw_setClockFrequency(chipcHw_CLOCK_ARM, - initParam->busClockFreqHz * - initParam->armBusRatio); - chipcHw_setClockFrequency(chipcHw_CLOCK_BUS, initParam->busClockFreqHz); - chipcHw_setClockFrequency(chipcHw_CLOCK_VPM, - initParam->busClockFreqHz * - initParam->vpmBusRatio); - chipcHw_setClockFrequency(chipcHw_CLOCK_DDR, - initParam->busClockFreqHz * - initParam->ddrBusRatio); - chipcHw_setClockFrequency(chipcHw_CLOCK_RTBUS, - initParam->busClockFreqHz / 2); -} diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c deleted file mode 100644 index f95ce91..0000000 --- a/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c +++ /dev/null @@ -1,125 +0,0 @@ -/***************************************************************************** -* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved. -* -* Unless you and Broadcom execute a separate written software license -* agreement governing use of this software, this software is licensed to you -* under the terms of the GNU General Public License version 2, available at -* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). -* -* Notwithstanding the above, under no circumstances may you combine this -* software in any way with any other Broadcom software provided under a -* license other than the GPL, without Broadcom's express prior written -* consent. -*****************************************************************************/ - -/* ---- Include Files ---------------------------------------------------- */ -#include <linux/types.h> -#include <mach/csp/chipcHw_def.h> -#include <mach/csp/chipcHw_inline.h> -#include <mach/csp/intcHw_reg.h> -#include <asm/cacheflush.h> - -/* ---- Private Constants and Types --------------------------------------- */ -/* ---- Private Variables ------------------------------------------------- */ -void chipcHw_reset_run_from_aram(void); - -typedef void (*RUNFUNC) (void); - -/****************************************************************************/ -/** -* @brief warmReset -* -* @note warmReset configures the clocks which are not reset back to the state -* required to execute on reset. To do so we need to copy the code into internal -* memory to change the ARM clock while we are not executing from DDR. -*/ -/****************************************************************************/ -void chipcHw_reset(uint32_t mask) -{ - int i = 0; - RUNFUNC runFunc = (RUNFUNC) (unsigned long)MM_ADDR_IO_ARAM; - - /* Disable all interrupts */ - intcHw_irq_disable(INTCHW_INTC0, 0xffffffff); - intcHw_irq_disable(INTCHW_INTC1, 0xffffffff); - intcHw_irq_disable(INTCHW_SINTC, 0xffffffff); - - { - REG_LOCAL_IRQ_SAVE; - if (mask & chipcHw_REG_SOFT_RESET_CHIP_SOFT) { - chipcHw_softReset(chipcHw_REG_SOFT_RESET_CHIP_SOFT); - } - /* Bypass the PLL clocks before reboot */ - writel(readl(&pChipcHw->UARTClock) | chipcHw_REG_PLL_CLOCK_BYPASS_SELECT, - &pChipcHw->UARTClock); - writel(readl(&pChipcHw->SPIClock) | chipcHw_REG_PLL_CLOCK_BYPASS_SELECT, - &pChipcHw->SPIClock); - - /* Copy the chipcHw_warmReset_run_from_aram function into ARAM */ - do { - writel(((uint32_t *) &chipcHw_reset_run_from_aram)[i], ((uint32_t __iomem *) MM_IO_BASE_ARAM) + i); - i++; - } while (readl(((uint32_t __iomem*) MM_IO_BASE_ARAM) + i - 1) != 0xe1a0f00f); /* 0xe1a0f00f == asm ("mov r15, r15"); */ - - flush_cache_all(); - - /* run the function from ARAM */ - runFunc(); - - /* Code will never get here, but include it to balance REG_LOCAL_IRQ_SAVE above */ - REG_LOCAL_IRQ_RESTORE; - } -} - -/* This function must run from internal memory */ -void chipcHw_reset_run_from_aram(void) -{ -/* Make sure, pipeline is filled with instructions coming from ARAM */ -__asm (" nop \n\t" - " nop \n\t" -#if defined(__KERNEL__) && !defined(STANDALONE) - " MRC p15,#0x0,r0,c1,c0,#0 \n\t" - " BIC r0,r0,#0xd \n\t" - " MCR p15,#0x0,r0,c1,c0,#0 \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" -#endif - " nop \n\t" - " nop \n\t" -/* Bypass the ARM clock and switch to XTAL clock */ - " MOV r2,#0x80000000 \n\t" - " LDR r3,[r2,#8] \n\t" - " ORR r3,r3,#0x20000 \n\t" - " STR r3,[r2,#8] \n\t" - - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" - " nop \n\t" -/* Issue reset */ - " MOV r3,#0x2 \n\t" - " STR r3,[r2,#0x80] \n\t" -/* End here */ - " MOV pc,pc \n\t"); -/* 0xe1a0f00f == asm ("mov r15, r15"); */ -} diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c deleted file mode 100644 index 54ad964..0000000 --- a/arch/arm/mach-bcmring/csp/chipc/chipcHw_str.c +++ /dev/null @@ -1,64 +0,0 @@ -/***************************************************************************** -* Copyright 2008 Broadcom Corporation. All rights reserved. -* -* Unless you and Broadcom execute a separate written software license -* agreement governing use of this software, this software is licensed to you -* under the terms of the GNU General Public License version 2, available at -* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). -* -* Notwithstanding the above, under no circumstances may you combine this -* software in any way with any other Broadcom software provided under a -* license other than the GPL, without Broadcom's express prior written -* consent. -*****************************************************************************/ -/****************************************************************************/ -/** -* @file chipcHw_str.c -* -* @brief Contains strings which are useful to linux and csp -* -* @note -*/ -/****************************************************************************/ - -/* ---- Include Files ---------------------------------------------------- */ - -#include <mach/csp/chipcHw_inline.h> - -/* ---- Private Constants and Types --------------------------------------- */ - -static const char *gMuxStr[] = { - "GPIO", /* 0 */ - "KeyPad", /* 1 */ - "I2C-Host", /* 2 */ - "SPI", /* 3 */ - "Uart", /* 4 */ - "LED-Mtx-P", /* 5 */ - "LED-Mtx-S", /* 6 */ - "SDIO-0", /* 7 */ - "SDIO-1", /* 8 */ - "PCM", /* 9 */ - "I2S", /* 10 */ - "ETM", /* 11 */ - "Debug", /* 12 */ - "Misc", /* 13 */ - "0xE", /* 14 */ - "0xF", /* 15 */ -}; - -/****************************************************************************/ -/** -* @brief Retrieves a string representation of the mux setting for a pin. -* -* @return Pointer to a character string. -*/ -/****************************************************************************/ - -const char *chipcHw_getGpioPinFunctionStr(int pin) -{ - if ((pin < 0) || (pin >= chipcHw_GPIO_COUNT)) { - return ""; - } - - return gMuxStr[chipcHw_getGpioPinFunction(pin)]; -} |