Initial revision

board/sacsng/clkinit.h

+/*
+ * (C) Copyright 2002
+ * Custom IDEAS, Inc. <www.cideas.com>
+ * Jon Diekema <diekema@cideas.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef FALSE
+#define FALSE 0
+#define TRUE (!FALSE)
+#endif
+
+#define SLRCLK_EN_MASK  0x00040000 /* PA13 - SLRCLK_EN*     */
+
+#define MIN_SAMPLE_RATE       4000 /* Minimum sample rate */
+#define MAX_128x_SAMPLE_RATE 43402 /* Maximum 128x sample rate */
+#define MAX_64x_SAMPLE_RATE  86805 /* Maximum  64x sample rate */
+
+#define KHZ          ((uint)1000)
+#define MHZ          ((uint)(1000 * KHZ))
+
+#define MCLK_BRG     3        /* MCLK, Master CLocK for the A/D & D/A   */
+#define SCLK_BRG     7        /* SCLK, Sample CLocK for the A/D & D/A   */
+#define LRCLK_BRG    5        /* LRCLK, L/R CLocK for the A/D & D/A     */
+			      /*   0 == BRG1 (used for SMC1)            */
+			      /*   1 == BRG2 (used for SMC2)            */
+			      /*   2 == BRG3 (used for SCC1)            */
+			      /*   3 == BRG4 (MCLK)                     */
+			      /*   4 == BRG5                            */
+			      /*   5 == BRG6 (LRCLK)                    */
+			      /*   6 == BRG7                            */
+			      /*   7 == BRG8 (SCLK)                     */
+
+#define MCLK_DIVISOR  4       /*  SCLK = MCLK / MCLK_DIVISOR */
+#define SCLK_DIVISOR (Daq64xSampling ? 64 : 128)
+		              /* LRCLK = SCLK / SCLK_DIVISOR */
+
+#define TIGHTEN_UP_BRG_EN_TIMING /* Tighten up the BRG enable timing      */
+#define RUN_SCLK_ON_BRG_INT      /* Run SCLK on BRG_INT instead of MCLK   */
+                                 /* The 8260 (Mask B.3) seems to have     */
+                                 /* problems generating SCLK from MCLK    */
+				 /* via CLK9.                             */
+#define RUN_LRCLK_ON_BRG_INT     /* Run LRCLK on BRG_INT instead of SCLK  */
+                                 /* The 8260 (Mask B.3) seems to have     */
+                                 /* problems generating LRCLK from SCLK   */
+
+#define CPM_CLK      (gd->bd->bi_cpmfreq)
+#define DFBRG        4
+#define BRG_INT_CLK  (CPM_CLK * 2 / DFBRG)
+                              /* BRG = CPM * 2 / DFBRG (Sect 9.8) */
+                              /* BRG = CPM * 2 / 4                */
+                              /* BRG = CPM / 2                    */
+
+#define CPM_BRG_EXTC_MASK	((uint)0x0000C000)
+#define CPM_BRG_EXTC_SHIFT      14
+
+#define CPM_BRG_DIV16_MASK	((uint)0x00000001)
+#define CPM_BRG_DIV16_SHIFT     1
+
+#define CPM_BRG_EXTC_BRGCLK     0
+#define CPM_BRG_EXTC_CLK3       1
+#define CPM_BRG_EXTC_CLK9       CPM_BRG_EXTC_CLK3
+#define CPM_BRG_EXTC_CLK5       2
+#define CPM_BRG_EXTC_CLK15      CPM_BRG_EXTC_CLK5
+
+/*
+ * External declarations
+ */
+
+extern int Daq64xSampling;
+
+extern void Daq_BRG_Reset(uint brg);
+extern void Daq_BRG_Run(uint brg);
+
+extern void Daq_BRG_Disable(uint brg);
+extern void Daq_BRG_Enable(uint brg);
+
+extern uint Daq_BRG_Get_Div16(uint brg);
+extern void Daq_BRG_Set_Div16(uint brg, uint div16);
+
+extern uint Daq_BRG_Get_Count(uint brg);
+extern void Daq_BRG_Set_Count(uint brg, uint brg_cnt);
+
+extern uint Daq_BRG_Get_ExtClk(uint brg);
+extern char* Daq_BRG_Get_ExtClk_Description(uint brg);
+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);
+extern void Daq_Start_Clocks(int sample_rate);
+extern void Daq_Display_Clocks(void);