# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1516403903 0
# Node ID cbc25978be5ab1760982f2eac6ca2a8bdcec8c9d
# Parent  780fa76e9c9b6bf013b35e9911f168f2cdfc97c5
tpudrv10.c: beginning to reconstruct the frequency programming function

diff -r 780fa76e9c9b -r cbc25978be5a src/cs/layer1/tpu_drivers/source0/tpudrv10.c
--- a/src/cs/layer1/tpu_drivers/source0/tpudrv10.c	Fri Jan 19 21:07:28 2018 +0000
+++ b/src/cs/layer1/tpu_drivers/source0/tpudrv10.c	Fri Jan 19 23:18:23 2018 +0000
@@ -143,19 +143,17 @@
 /*                 EFFECTIVE DOWNLOADING THROUGH TSP                      */
 /**************************************************************************/
 /**************************************************************************/
-// rx & tx
-typedef struct tx_rx_s
-{
-  UWORD16 farfcn0;
-  WORD8 ou;
-}
-T_TX_RX;
 
 struct synth_s {
-    // common
-    UWORD16 arfcn0;
-    UWORD16 limit;
-    T_TX_RX tx_rx[2];
+  // common
+  UWORD16 arfcn0;
+  UWORD16 limit;
+  // Tx
+  UWORD16 ul_farfcn0;
+  WORD8   ul_sign;
+  // Rx
+  UWORD16 dl_farfcn0;
+  UWORD8  dl_mult;
 };
 
 struct magic1_s {
@@ -176,8 +174,8 @@
 
 static const struct synth_s synth_900[] =
 {
-  {  0,  124, {{ 890,   1}, { 935,   4}}},// gsm    0 - 124
-  {974, 1023, {{ 880,   1}, { 925,   4}}},// egsm 975 - 1023
+  {  0,  124, 890, 1, 935, 4},// gsm    0 - 124
+  {974, 1023, 880, 1, 925, 4},// egsm 975 - 1023
 };
 
 static const struct magic1_s magic1_900[] =
@@ -201,7 +199,7 @@
 
 static const struct synth_s synth_1800[] =
 {
-  {511, 885, {{1710, -1},  {1805,   1}}}, // dcs  512 - 885
+  {511, 885, 1710, -1, 1805, 1}, // dcs  512 - 885
 };
 
 static const struct magic1_s magic1_1800[] =
@@ -220,7 +218,7 @@
 
 static const struct synth_s synth_1900[] =
 {
-  {511, 810, {{1850, -1},  {1930,   1}}}, // pcs  512 - 810;
+  {511, 810, 1850, -1, 1930, 1}, // pcs  512 - 810;
 };
 
 static const struct magic1_s magic1_1900[] =
@@ -235,7 +233,7 @@
 
 static const struct synth_s synth_850[] =
 {
-  {127, 251, {{ 824,   1},  { 869,   4}}}, // gsm850 high
+  {127, 251, 824, 1, 869, 4}, // gsm850
 };
 
 static const struct magic1_s magic1_850[] =
@@ -274,14 +272,36 @@
 #if 0
 UWORD32 calc_a_b(UWORD16 arfcn, UWORD8 downlink)
 {
-  UWORD32 farfcn;	/* in 200 kHz units */
-  UWORD32 n;		/* B * P + A */
+  UWORD32 farfcn;	/* sp+0x1C, in 200 kHz units */
   struct synth_s  *s;
+  struct magic1_s *m1;
+  UWORD32 magic1;	/* sp+0x24 */
+  UWORD16 sp4;
+  UWORD32 sp0x14, sp0x18, sp0x20;
 
   s = rf_path[rf_index].synth;
   while(s->limit < arfcn)
     s++;
 
+  m1 = rf_path[rf_index].magic1;
+  while(m1->limit < arfcn)
+    m1++;
+  magic1 = m1->magic;
+
+  if (downlink) {
+    sp0x20 = 0x27627 * s->dl_mult + 8;
+    farfcn = 5*s->dl_farfcn0 + (arfcn - s->arfcn0);
+    sp4 = farfcn * s->dl_mult;
+    sp0x18 = sp4 << 21;
+    sp0x14 = sp0x20 * farfcn;
+  } else {
+    sp0x20 = 0x2762F;
+    farfcn = 5*s->ul_farfcn0 + (arfcn - s->arfcn0);
+    sp4 = magic1 * s->ul_sign + farfcn;
+    sp0x18 = sp4 << 21;
+    sp0x14 = sp0x20 * (magic1 * s->ul_sign + farfcn);
+  }
+
   rf_chip_band = s->rf_chip_band;
 
   // Convert the ARFCN to the channel frequency (times 5 to avoid the decimal value)