From eb9401e3ebfa6a1550522be28895af461137f797 Mon Sep 17 00:00:00 2001 From: wdenk Date: Mon, 11 Nov 2002 02:11:37 +0000 Subject: * Patch by Andreas Oberritter, 09 Nov 2002: Change behaviour of NetLoop(): return -1 for errors, filesize otherwise; return code 0 is valid an means no file loaded - in this case the environment still gets updated! * Patches by Jon Diekema, 9 Nov 2002: - improve ADC/DAC clocking on the SACSng board to align the failing edges of LRCLK and SCLK - sbc8260 configuration tweaks - add status LED support for 82xx systems - wire sspi/sspo commands into command handler; improved error handlering - add timestamp support and alternate memory test to the SACSng configuration --- board/sacsng/clkinit.c | 531 +++++++++++++++++++++++++++++++------------------ board/sacsng/clkinit.h | 13 +- board/sacsng/sacsng.c | 21 +- 3 files changed, 367 insertions(+), 198 deletions(-) (limited to 'board/sacsng') diff --git a/board/sacsng/clkinit.c b/board/sacsng/clkinit.c index 1e851e14d8..634c1e05fb 100644 --- a/board/sacsng/clkinit.c +++ b/board/sacsng/clkinit.c @@ -286,7 +286,6 @@ uint Daq_BRG_Rate(uint brg) } uint Daq_Get_SampleRate(void) - { /* * Read the BRG's to return the actual sample rate. @@ -294,68 +293,12 @@ uint Daq_Get_SampleRate(void) return (Daq_BRG_Rate(MCLK_BRG) / (MCLK_DIVISOR * SCLK_DIVISOR)); } -uint Daq_Set_SampleRate(uint rate, uint force) - -{ - DECLARE_GLOBAL_DATA_PTR; - uint mclk_divisor; /* MCLK divisor */ - uint rate_curr; /* Current sample rate */ - - /* - * Limit the sample rate to some sensible values. - */ - if (Daq64xSampling) { - if (rate > MAX_64x_SAMPLE_RATE) { - rate = MAX_64x_SAMPLE_RATE; - } - } - else { - if (rate > MAX_128x_SAMPLE_RATE) { - rate = MAX_128x_SAMPLE_RATE; - } - } - if (rate < MIN_SAMPLE_RATE) { - rate = MIN_SAMPLE_RATE; - } - - /* Check to see if we are really changing rates */ - rate_curr = Daq_Get_SampleRate(); - if ((rate != rate_curr) || force) { - /* - * Dynamically adjust MCLK based on the new sample rate. - */ - - /* Compute the divisors */ - mclk_divisor = BRG_INT_CLK / (rate * MCLK_DIVISOR * SCLK_DIVISOR); - - /* Setup MCLK */ - Daq_BRG_Set_Count(MCLK_BRG, mclk_divisor); - - /* Setup SCLK */ -# ifdef RUN_SCLK_ON_BRG_INT - Daq_BRG_Set_Count(SCLK_BRG, mclk_divisor * MCLK_DIVISOR); -# else - Daq_BRG_Set_Count(SCLK_BRG, MCLK_DIVISOR); -# endif - -# ifdef RUN_LRCLK_ON_BRG_INT - Daq_BRG_Set_Count(LRCLK_BRG, - mclk_divisor * MCLK_DIVISOR * SCLK_DIVISOR); -# else - Daq_BRG_Set_Count(LRCLK_BRG, SCLK_DIVISOR); -# endif - - /* Read the BRG's to return the actual sample rate. */ - rate_curr = Daq_Get_SampleRate(); - } - - return (rate_curr); -} - void Daq_Init_Clocks(int sample_rate, int sample_64x) - { + DECLARE_GLOBAL_DATA_PTR; volatile ioport_t *iopa = ioport_addr((immap_t *)CFG_IMMR, 0 /* port A */); + uint mclk_divisor; /* MCLK divisor */ + int flag; /* Interrupt state */ /* Save off the clocking data */ Daq64xSampling = sample_64x; @@ -363,18 +306,11 @@ void Daq_Init_Clocks(int sample_rate, int sample_64x) /* * Limit the sample rate to some sensible values. */ - if (Daq64xSampling) { - if (sample_rate > MAX_64x_SAMPLE_RATE) { - sample_rate = MAX_64x_SAMPLE_RATE; - } - } - else { - if (sample_rate > MAX_128x_SAMPLE_RATE) { - sample_rate = MAX_128x_SAMPLE_RATE; - } + if (sample_rate > MAX_64x_SAMPLE_RATE) { + sample_rate = MAX_64x_SAMPLE_RATE; } if (sample_rate < MIN_SAMPLE_RATE) { - sample_rate = MIN_SAMPLE_RATE; + sample_rate = MIN_SAMPLE_RATE; } /* @@ -398,8 +334,41 @@ void Daq_Init_Clocks(int sample_rate, int sample_64x) Daq_BRG_Set_ExtClk(LRCLK_BRG, CPM_BRG_EXTC_CLK5); # endif - /* Setup the BRG rates */ - Daq_Set_SampleRate(sample_rate, TRUE); + /* + * Dynamically adjust MCLK based on the new sample rate. + */ + + /* Compute the divisors */ + mclk_divisor = BRG_INT_CLK / (sample_rate * MCLK_DIVISOR * SCLK_DIVISOR); + + /* + * Disable interrupt and save the current state + */ + flag = disable_interrupts(); + + /* Setup MCLK */ + Daq_BRG_Set_Count(MCLK_BRG, mclk_divisor); + + /* Setup SCLK */ +# ifdef RUN_SCLK_ON_BRG_INT + Daq_BRG_Set_Count(SCLK_BRG, mclk_divisor * MCLK_DIVISOR); +# else + Daq_BRG_Set_Count(SCLK_BRG, MCLK_DIVISOR); +# endif + +# ifdef RUN_LRCLK_ON_BRG_INT + Daq_BRG_Set_Count(LRCLK_BRG, + mclk_divisor * MCLK_DIVISOR * SCLK_DIVISOR); +# else + Daq_BRG_Set_Count(LRCLK_BRG, SCLK_DIVISOR); +# endif + + /* + * Restore the Interrupt state + */ + if (flag) { + enable_interrupts(); + } /* Enable the clock drivers */ iopa->pdat &= ~SLRCLK_EN_MASK; @@ -410,116 +379,276 @@ void Daq_Stop_Clocks(void) { #ifdef TIGHTEN_UP_BRG_TIMING volatile immap_t *immr = (immap_t *)CFG_IMMR; + register uint mclk_brg; /* MCLK BRG value */ + register uint sclk_brg; /* SCLK BRG value */ + register uint lrclk_brg; /* LRCLK BRG value */ + unsigned long flag; /* Interrupt flags */ #endif # ifdef TIGHTEN_UP_BRG_TIMING - /* - * Reset MCLK BRG + /* + * Obtain MCLK BRG reset/disabled value */ # if (MCLK_BRG == 0) - immr->im_brgc1 |= CPM_BRG_RST; - immr->im_brgc1 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC1 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 1) - immr->im_brgc2 |= CPM_BRG_RST; - immr->im_brgc2 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC2 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 2) - immr->im_brgc3 |= CPM_BRG_RST; - immr->im_brgc3 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC3 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 3) - immr->im_brgc4 |= CPM_BRG_RST; - immr->im_brgc4 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC4 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 4) - immr->im_brgc5 |= CPM_BRG_RST; - immr->im_brgc5 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC5 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 5) - immr->im_brgc6 |= CPM_BRG_RST; - immr->im_brgc6 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC6 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 6) - immr->im_brgc7 |= CPM_BRG_RST; - immr->im_brgc7 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC7 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (MCLK_BRG == 7) - immr->im_brgc8 |= CPM_BRG_RST; - immr->im_brgc8 &= ~CPM_BRG_RST; + mclk_brg = (*IM_BRGC8 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif - /* - * Reset SCLK BRG + /* + * Obtain SCLK BRG reset/disabled value */ # if (SCLK_BRG == 0) - immr->im_brgc1 |= CPM_BRG_RST; - immr->im_brgc1 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC1 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 1) - immr->im_brgc2 |= CPM_BRG_RST; - immr->im_brgc2 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC2 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 2) - immr->im_brgc3 |= CPM_BRG_RST; - immr->im_brgc3 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC3 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 3) - immr->im_brgc4 |= CPM_BRG_RST; - immr->im_brgc4 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC4 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 4) - immr->im_brgc5 |= CPM_BRG_RST; - immr->im_brgc5 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC5 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 5) - immr->im_brgc6 |= CPM_BRG_RST; - immr->im_brgc6 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC6 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 6) - immr->im_brgc7 |= CPM_BRG_RST; - immr->im_brgc7 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC7 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (SCLK_BRG == 7) - immr->im_brgc8 |= CPM_BRG_RST; - immr->im_brgc8 &= ~CPM_BRG_RST; + sclk_brg = (*IM_BRGC8 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif - /* - * Reset LRCLK BRG + /* + * Obtain LRCLK BRG reset/disabled value */ # if (LRCLK_BRG == 0) - immr->im_brgc1 |= CPM_BRG_RST; - immr->im_brgc1 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC1 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 1) - immr->im_brgc2 |= CPM_BRG_RST; - immr->im_brgc2 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC2 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 2) - immr->im_brgc3 |= CPM_BRG_RST; - immr->im_brgc3 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC3 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 3) - immr->im_brgc4 |= CPM_BRG_RST; - immr->im_brgc4 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC4 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 4) - immr->im_brgc5 |= CPM_BRG_RST; - immr->im_brgc5 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC5 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 5) - immr->im_brgc6 |= CPM_BRG_RST; - immr->im_brgc6 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC6 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 6) - immr->im_brgc7 |= CPM_BRG_RST; - immr->im_brgc7 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC7 | CPM_BRG_RST) & ~CPM_BRG_EN; # endif # if (LRCLK_BRG == 7) - immr->im_brgc8 |= CPM_BRG_RST; - immr->im_brgc8 &= ~CPM_BRG_RST; + lrclk_brg = (*IM_BRGC8 | CPM_BRG_RST) & ~CPM_BRG_EN; +# endif + + /* + * Disable interrupt and save the current state + */ + flag = disable_interrupts(); + + /* + * Set reset on MCLK BRG + */ +# if (MCLK_BRG == 0) + *IM_BRGC1 = mclk_brg; +# endif +# if (MCLK_BRG == 1) + *IM_BRGC2 = mclk_brg; +# endif +# if (MCLK_BRG == 2) + *IM_BRGC3 = mclk_brg; +# endif +# if (MCLK_BRG == 3) + *IM_BRGC4 = mclk_brg; +# endif +# if (MCLK_BRG == 4) + *IM_BRGC5 = mclk_brg; +# endif +# if (MCLK_BRG == 5) + *IM_BRGC6 = mclk_brg; +# endif +# if (MCLK_BRG == 6) + *IM_BRGC7 = mclk_brg; +# endif +# if (MCLK_BRG == 7) + *IM_BRGC8 = mclk_brg; +# endif + + /* + * Set reset on SCLK BRG + */ +# if (SCLK_BRG == 0) + *IM_BRGC1 = sclk_brg; +# endif +# if (SCLK_BRG == 1) + *IM_BRGC2 = sclk_brg; +# endif +# if (SCLK_BRG == 2) + *IM_BRGC3 = sclk_brg; +# endif +# if (SCLK_BRG == 3) + *IM_BRGC4 = sclk_brg; +# endif +# if (SCLK_BRG == 4) + *IM_BRGC5 = sclk_brg; +# endif +# if (SCLK_BRG == 5) + *IM_BRGC6 = sclk_brg; # endif +# if (SCLK_BRG == 6) + *IM_BRGC7 = sclk_brg; +# endif +# if (SCLK_BRG == 7) + *IM_BRGC8 = sclk_brg; +# endif + + /* + * Set reset on LRCLK BRG + */ +# if (LRCLK_BRG == 0) + *IM_BRGC1 = lrclk_brg; +# endif +# if (LRCLK_BRG == 1) + *IM_BRGC2 = lrclk_brg; +# endif +# if (LRCLK_BRG == 2) + *IM_BRGC3 = lrclk_brg; +# endif +# if (LRCLK_BRG == 3) + *IM_BRGC4 = lrclk_brg; +# endif +# if (LRCLK_BRG == 4) + *IM_BRGC5 = lrclk_brg; +# endif +# if (LRCLK_BRG == 5) + *IM_BRGC6 = lrclk_brg; +# endif +# if (LRCLK_BRG == 6) + *IM_BRGC7 = lrclk_brg; +# endif +# if (LRCLK_BRG == 7) + *IM_BRGC8 = lrclk_brg; +# endif + + /* + * Clear reset on MCLK BRG + */ +# if (MCLK_BRG == 0) + *IM_BRGC1 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 1) + *IM_BRGC2 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 2) + *IM_BRGC3 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 3) + *IM_BRGC4 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 4) + *IM_BRGC5 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 5) + *IM_BRGC6 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 6) + *IM_BRGC7 = mclk_brg & ~CPM_BRG_RST; +# endif +# if (MCLK_BRG == 7) + *IM_BRGC8 = mclk_brg & ~CPM_BRG_RST; +# endif + + /* + * Clear reset on SCLK BRG + */ +# if (SCLK_BRG == 0) + *IM_BRGC1 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 1) + *IM_BRGC2 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 2) + *IM_BRGC3 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 3) + *IM_BRGC4 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 4) + *IM_BRGC5 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 5) + *IM_BRGC6 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 6) + *IM_BRGC7 = sclk_brg & ~CPM_BRG_RST; +# endif +# if (SCLK_BRG == 7) + *IM_BRGC8 = sclk_brg & ~CPM_BRG_RST; +# endif + + /* + * Clear reset on LRCLK BRG + */ +# if (LRCLK_BRG == 0) + *IM_BRGC1 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 1) + *IM_BRGC2 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 2) + *IM_BRGC3 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 3) + *IM_BRGC4 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 4) + *IM_BRGC5 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 5) + *IM_BRGC6 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 6) + *IM_BRGC7 = lrclk_brg & ~CPM_BRG_RST; +# endif +# if (LRCLK_BRG == 7) + *IM_BRGC8 = lrclk_brg & ~CPM_BRG_RST; +# endif + + /* + * Restore the Interrupt state + */ + if (flag) { + enable_interrupts(); + } # else /* * Reset the clocks @@ -536,99 +665,99 @@ void Daq_Start_Clocks(int sample_rate) #ifdef TIGHTEN_UP_BRG_TIMING volatile immap_t *immr = (immap_t *)CFG_IMMR; - uint mclk_brg; /* MCLK BRG value */ - uint sclk_brg; /* SCLK BRG value */ + register uint mclk_brg; /* MCLK BRG value */ + register uint sclk_brg; /* SCLK BRG value */ + register uint temp_lrclk_brg; /* Temporary LRCLK BRG value */ + register uint real_lrclk_brg; /* Permanent LRCLK BRG value */ uint lrclk_brg; /* LRCLK BRG value */ - uint temp_lrclk_brg; /* Temporary LRCLK BRG value */ - uint real_lrclk_brg; /* Permanent LRCLK BRG value */ unsigned long flags; /* Interrupt flags */ uint sclk_cnt; /* SCLK count */ uint delay_cnt; /* Delay count */ #endif # ifdef TIGHTEN_UP_BRG_TIMING - /* + /* * Obtain the enabled MCLK BRG value */ # if (MCLK_BRG == 0) - mclk_brg = (immr->im_brgc1 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC1 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 1) - mclk_brg = (immr->im_brgc2 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC2 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 2) - mclk_brg = (immr->im_brgc3 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC3 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 3) - mclk_brg = (immr->im_brgc4 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC4 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 4) - mclk_brg = (immr->im_brgc5 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC5 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 5) - mclk_brg = (immr->im_brgc6 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC6 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 6) - mclk_brg = (immr->im_brgc7 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC7 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (MCLK_BRG == 7) - mclk_brg = (immr->im_brgc8 & ~CPM_BRG_RST) | CPM_BRG_EN; + mclk_brg = (*IM_BRGC8 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif - /* + /* * Obtain the enabled SCLK BRG value */ # if (SCLK_BRG == 0) - sclk_brg = (immr->im_brgc1 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC1 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 1) - sclk_brg = (immr->im_brgc2 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC2 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 2) - sclk_brg = (immr->im_brgc3 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC3 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 3) - sclk_brg = (immr->im_brgc4 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC4 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 4) - sclk_brg = (immr->im_brgc5 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC5 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 5) - sclk_brg = (immr->im_brgc6 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC6 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 6) - sclk_brg = (immr->im_brgc7 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC7 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (SCLK_BRG == 7) - sclk_brg = (immr->im_brgc8 & ~CPM_BRG_RST) | CPM_BRG_EN; + sclk_brg = (*IM_BRGC8 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif - /* + /* * Obtain the enabled LRCLK BRG value */ # if (LRCLK_BRG == 0) - lrclk_brg = (immr->im_brgc1 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC1 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 1) - lrclk_brg = (immr->im_brgc2 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC2 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 2) - lrclk_brg = (immr->im_brgc3 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC3 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 3) - lrclk_brg = (immr->im_brgc4 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC4 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 4) - lrclk_brg = (immr->im_brgc5 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC5 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 5) - lrclk_brg = (immr->im_brgc6 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC6 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 6) - lrclk_brg = (immr->im_brgc7 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC7 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif # if (LRCLK_BRG == 7) - lrclk_brg = (immr->im_brgc8 & ~CPM_BRG_RST) | CPM_BRG_EN; + lrclk_brg = (*IM_BRGC8 & ~CPM_BRG_RST) | CPM_BRG_EN; # endif /* Save off the real LRCLK value */ @@ -639,7 +768,7 @@ void Daq_Start_Clocks(int sample_rate) /* Compute the delay as a function of SCLK count */ delay_cnt = ((sclk_cnt / 4) - 2) * 10 + 6; - if (sample_rate == 43402) { + if (DaqSampleRate == 43402) { delay_cnt++; } @@ -649,117 +778,129 @@ void Daq_Start_Clocks(int sample_rate) /* Insert the count */ temp_lrclk_brg |= ((delay_cnt + (sclk_cnt / 2) - 1) << 1) & 0x00001FFE; - /* + /* + * Disable interrupt and save the current state + */ + flag = disable_interrupts(); + + /* * Enable MCLK BRG */ # if (MCLK_BRG == 0) - immr->im_brgc1 = mclk_brg; + *IM_BRGC1 = mclk_brg; # endif # if (MCLK_BRG == 1) - immr->im_brgc2 = mclk_brg; + *IM_BRGC2 = mclk_brg; # endif # if (MCLK_BRG == 2) - immr->im_brgc3 = mclk_brg; + *IM_BRGC3 = mclk_brg; # endif # if (MCLK_BRG == 3) - immr->im_brgc4 = mclk_brg; + *IM_BRGC4 = mclk_brg; # endif # if (MCLK_BRG == 4) - immr->im_brgc5 = mclk_brg; + *IM_BRGC5 = mclk_brg; # endif # if (MCLK_BRG == 5) - immr->im_brgc6 = mclk_brg; + *IM_BRGC6 = mclk_brg; # endif # if (MCLK_BRG == 6) - immr->im_brgc7 = mclk_brg; + *IM_BRGC7 = mclk_brg; # endif # if (MCLK_BRG == 7) - immr->im_brgc8 = mclk_brg; + *IM_BRGC8 = mclk_brg; # endif - /* + /* * Enable SCLK BRG */ # if (SCLK_BRG == 0) - immr->im_brgc1 = sclk_brg; + *IM_BRGC1 = sclk_brg; # endif # if (SCLK_BRG == 1) - immr->im_brgc2 = sclk_brg; + *IM_BRGC2 = sclk_brg; # endif # if (SCLK_BRG == 2) - immr->im_brgc3 = sclk_brg; + *IM_BRGC3 = sclk_brg; # endif # if (SCLK_BRG == 3) - immr->im_brgc4 = sclk_brg; + *IM_BRGC4 = sclk_brg; # endif # if (SCLK_BRG == 4) - immr->im_brgc5 = sclk_brg; + *IM_BRGC5 = sclk_brg; # endif # if (SCLK_BRG == 5) - immr->im_brgc6 = sclk_brg; + *IM_BRGC6 = sclk_brg; # endif # if (SCLK_BRG == 6) - immr->im_brgc7 = sclk_brg; + *IM_BRGC7 = sclk_brg; # endif # if (SCLK_BRG == 7) - immr->im_brgc8 = sclk_brg; + *IM_BRGC8 = sclk_brg; # endif - /* + /* * Enable LRCLK BRG (1st time - temporary) */ # if (LRCLK_BRG == 0) - immr->im_brgc1 = temp_lrclk_brg; + *IM_BRGC1 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 1) - immr->im_brgc2 = temp_lrclk_brg; + *IM_BRGC2 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 2) - immr->im_brgc3 = temp_lrclk_brg; + *IM_BRGC3 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 3) - immr->im_brgc4 = temp_lrclk_brg; + *IM_BRGC4 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 4) - immr->im_brgc5 = temp_lrclk_brg; + *IM_BRGC5 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 5) - immr->im_brgc6 = temp_lrclk_brg; + *IM_BRGC6 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 6) - immr->im_brgc7 = temp_lrclk_brg; + *IM_BRGC7 = temp_lrclk_brg; # endif # if (LRCLK_BRG == 7) - immr->im_brgc8 = temp_lrclk_brg; + *IM_BRGC8 = temp_lrclk_brg; # endif - - /* + + /* * Enable LRCLK BRG (2nd time - permanent) */ # if (LRCLK_BRG == 0) - immr->im_brgc1 = real_lrclk_brg; + *IM_BRGC1 = real_lrclk_brg; # endif # if (LRCLK_BRG == 1) - immr->im_brgc2 = real_lrclk_brg; + *IM_BRGC2 = real_lrclk_brg; # endif # if (LRCLK_BRG == 2) - immr->im_brgc3 = real_lrclk_brg; + *IM_BRGC3 = real_lrclk_brg; # endif # if (LRCLK_BRG == 3) - immr->im_brgc4 = real_lrclk_brg; + *IM_BRGC4 = real_lrclk_brg; # endif # if (LRCLK_BRG == 4) - immr->im_brgc5 = real_lrclk_brg; + *IM_BRGC5 = real_lrclk_brg; # endif # if (LRCLK_BRG == 5) - immr->im_brgc6 = real_lrclk_brg; + *IM_BRGC6 = real_lrclk_brg; # endif # if (LRCLK_BRG == 6) - immr->im_brgc7 = real_lrclk_brg; + *IM_BRGC7 = real_lrclk_brg; # endif # if (LRCLK_BRG == 7) - immr->im_brgc8 = real_lrclk_brg; + *IM_BRGC8 = real_lrclk_brg; # endif + + /* + * Restore the Interrupt state + */ + if (flag) { + enable_interrupts(); + } # else /* * Enable the clocks diff --git a/board/sacsng/clkinit.h b/board/sacsng/clkinit.h index 02086d414b..2731f2e7ca 100644 --- a/board/sacsng/clkinit.h +++ b/board/sacsng/clkinit.h @@ -61,6 +61,9 @@ /* The 8260 (Mask B.3) seems to have */ /* problems generating LRCLK from SCLK */ +#define NUM_LRCLKS_TO_STABILIZE 1 /* Number of LRCLK period (sample) */ + /* to wait for the clock to stabilize */ + #define CPM_CLK (gd->bd->bi_cpmfreq) #define DFBRG 4 #define BRG_INT_CLK (CPM_CLK * 2 / DFBRG) @@ -80,6 +83,15 @@ #define CPM_BRG_EXTC_CLK5 2 #define CPM_BRG_EXTC_CLK15 CPM_BRG_EXTC_CLK5 +#define IM_BRGC1 ((uint *)0xf00119f0) +#define IM_BRGC2 ((uint *)0xf00119f4) +#define IM_BRGC3 ((uint *)0xf00119f8) +#define IM_BRGC4 ((uint *)0xf00119fc) +#define IM_BRGC5 ((uint *)0xf00115f0) +#define IM_BRGC6 ((uint *)0xf00115f4) +#define IM_BRGC7 ((uint *)0xf00115f8) +#define IM_BRGC8 ((uint *)0xf00115fc) + /* * External declarations */ @@ -105,7 +117,6 @@ extern void Daq_BRG_Set_ExtClk(uint brg, uint extc); extern uint Daq_BRG_Rate(uint brg); extern uint Daq_Get_SampleRate(void); -extern uint Daq_Set_SampleRate(uint rate, uint force); extern void Daq_Init_Clocks(int sample_rate, int sample_64x); extern void Daq_Stop_Clocks(void); diff --git a/board/sacsng/sacsng.c b/board/sacsng/sacsng.c index 0f0f0e6cc0..19dbb97e60 100644 --- a/board/sacsng/sacsng.c +++ b/board/sacsng/sacsng.c @@ -26,7 +26,6 @@ #include #include #include -/*NO// #include */ #include #include @@ -486,9 +485,25 @@ int misc_init_r(void) } } + /* + * Stop the clocks and wait for at least 1 LRCLK period + * to make sure the clocking has really stopped. + */ + Daq_Stop_Clocks(); + udelay((1000000 / sample_rate) * NUM_LRCLKS_TO_STABILIZE); + + /* + * Initialize the clocks with the new rates + */ Daq_Init_Clocks(sample_rate, sample_64x); sample_rate = Daq_Get_SampleRate(); + + /* + * Start the clocks and wait for at least 1 LRCLK period + * to make sure the clocking has become stable. + */ Daq_Start_Clocks(sample_rate); + udelay((1000000 / sample_rate) * NUM_LRCLKS_TO_STABILIZE); sprintf(str_buf, "%d", sample_rate); setenv("DaqSampleRate", str_buf); @@ -792,10 +807,12 @@ void spi_dac_chipsel(int cs) * chip selects: it calls the appropriate function to control the SPI * chip selects. */ -spi_chipsel_type spi_chipsel[2] = { +spi_chipsel_type spi_chipsel[] = { spi_adc_chipsel, spi_dac_chipsel }; +int spi_chipsel_cnt = sizeof(spi_chipsel) / sizeof(spi_chipsel[0]); + #endif /* CFG_CMD_SPI */ #endif /* CONFIG_MISC_INIT_R */ -- cgit v1.2.1