drivers/net/wireless/zd1211rw/zd_rf_rf2959.c

   1 /* zd_rf_rfmd.c: Functions for the RFMD RF controller
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16  */
  17
  18 #include <linux/kernel.h>
  19
  20 #include "zd_rf.h"
  21 #include "zd_usb.h"
  22 #include "zd_chip.h"
  23
  24 static const u32 rf2959_table[][2] = {
  25         RF_CHANNEL( 1) = { 0x181979, 0x1e6666 },
  26         RF_CHANNEL( 2) = { 0x181989, 0x1e6666 },
  27         RF_CHANNEL( 3) = { 0x181999, 0x1e6666 },
  28         RF_CHANNEL( 4) = { 0x1819a9, 0x1e6666 },
  29         RF_CHANNEL( 5) = { 0x1819b9, 0x1e6666 },
  30         RF_CHANNEL( 6) = { 0x1819c9, 0x1e6666 },
  31         RF_CHANNEL( 7) = { 0x1819d9, 0x1e6666 },
  32         RF_CHANNEL( 8) = { 0x1819e9, 0x1e6666 },
  33         RF_CHANNEL( 9) = { 0x1819f9, 0x1e6666 },
  34         RF_CHANNEL(10) = { 0x181a09, 0x1e6666 },
  35         RF_CHANNEL(11) = { 0x181a19, 0x1e6666 },
  36         RF_CHANNEL(12) = { 0x181a29, 0x1e6666 },
  37         RF_CHANNEL(13) = { 0x181a39, 0x1e6666 },
  38         RF_CHANNEL(14) = { 0x181a60, 0x1c0000 },
  39 };
  40
  41 #if 0
  42 static int bits(u32 rw, int from, int to)
  43 {
  44         rw &= ~(0xffffffffU << (to+1));
  45         rw >>= from;
  46         return rw;
  47 }
  48
  49 static int bit(u32 rw, int bit)
  50 {
  51         return bits(rw, bit, bit);
  52 }
  53
  54 static void dump_regwrite(u32 rw)
  55 {
  56         int reg = bits(rw, 18, 22);
  57         int rw_flag = bits(rw, 23, 23);
  58         PDEBUG("rf2959 %#010x reg %d rw %d", rw, reg, rw_flag);
  59
  60         switch (reg) {
  61         case 0:
  62                 PDEBUG("reg0 CFG1 ref_sel %d hybernate %d rf_vco_reg_en %d"
  63                        " if_vco_reg_en %d if_vga_en %d",
  64                        bits(rw, 14, 15), bit(rw, 3), bit(rw, 2), bit(rw, 1),
  65                        bit(rw, 0));
  66                 break;
  67         case 1:
  68                 PDEBUG("reg1 IFPLL1 pll_en1 %d kv_en1 %d vtc_en1 %d lpf1 %d"
  69                        " cpl1 %d pdp1 %d autocal_en1 %d ld_en1 %d ifloopr %d"
  70                        " ifloopc %d dac1 %d",
  71                        bit(rw, 17), bit(rw, 16), bit(rw, 15), bit(rw, 14),
  72                        bit(rw, 13), bit(rw, 12), bit(rw, 11), bit(rw, 10),
  73                        bits(rw, 7, 9), bits(rw, 4, 6), bits(rw, 0, 3));
  74                 break;
  75         case 2:
  76                 PDEBUG("reg2 IFPLL2 n1 %d num1 %d",
  77                        bits(rw, 6, 17), bits(rw, 0, 5));
  78                 break;
  79         case 3:
  80                 PDEBUG("reg3 IFPLL3 num %d", bits(rw, 0, 17));
  81                 break;
  82         case 4:
  83                 PDEBUG("reg4 IFPLL4 dn1 %#04x ct_def1 %d kv_def1 %d",
  84                        bits(rw, 8, 16), bits(rw, 4, 7), bits(rw, 0, 3));
  85                 break;
  86         case 5:
  87                 PDEBUG("reg5 RFPLL1 pll_en %d kv_en %d vtc_en %d lpf %d cpl %d"
  88                        " pdp %d autocal_en %d ld_en %d rfloopr %d rfloopc %d"
  89                        " dac %d",
  90                        bit(rw, 17), bit(rw, 16), bit(rw, 15), bit(rw, 14),
  91                        bit(rw, 13), bit(rw, 12), bit(rw, 11), bit(rw, 10),
  92                        bits(rw, 7, 9), bits(rw, 4, 6), bits(rw, 0,3));
  93                 break;
  94         case 6:
  95                 PDEBUG("reg6 RFPLL2 n %d num %d",
  96                        bits(rw, 6, 17), bits(rw, 0, 5));
  97                 break;
  98         case 7:
  99                 PDEBUG("reg7 RFPLL3 num2 %d", bits(rw, 0, 17));
 100                 break;
 101         case 8:
 102                 PDEBUG("reg8 RFPLL4 dn %#06x ct_def %d kv_def %d",
 103                        bits(rw, 8, 16), bits(rw, 4, 7), bits(rw, 0, 3));
 104                 break;
 105         case 9:
 106                 PDEBUG("reg9 CAL1 tvco %d tlock %d m_ct_value %d ld_window %d",
 107                        bits(rw, 13, 17), bits(rw, 8, 12), bits(rw, 3, 7),
 108                        bits(rw, 0, 2));
 109                 break;
 110         case 10:
 111                 PDEBUG("reg10 TXRX1 rxdcfbbyps %d pcontrol %d txvgc %d"
 112                        " rxlpfbw %d txlpfbw %d txdiffmode %d txenmode %d"
 113                        " intbiasen %d tybypass %d",
 114                        bit(rw, 17), bits(rw, 15, 16), bits(rw, 10, 14),
 115                        bits(rw, 7, 9), bits(rw, 4, 6), bit(rw, 3), bit(rw, 2),
 116                        bit(rw, 1), bit(rw, 0));
 117                 break;
 118         case 11:
 119                 PDEBUG("reg11 PCNT1 mid_bias %d p_desired %d pc_offset %d"
 120                         " tx_delay %d",
 121                         bits(rw, 15, 17), bits(rw, 9, 14), bits(rw, 3, 8),
 122                         bits(rw, 0, 2));
 123                 break;
 124         case 12:
 125                 PDEBUG("reg12 PCNT2 max_power %d mid_power %d min_power %d",
 126                        bits(rw, 12, 17), bits(rw, 6, 11), bits(rw, 0, 5));
 127                 break;
 128         case 13:
 129                 PDEBUG("reg13 VCOT1 rfpll vco comp %d ifpll vco comp %d"
 130                        " lobias %d if_biasbuf %d if_biasvco %d rf_biasbuf %d"
 131                        " rf_biasvco %d",
 132                        bit(rw, 17), bit(rw, 16), bit(rw, 15),
 133                        bits(rw, 8, 9), bits(rw, 5, 7), bits(rw, 3, 4),
 134                        bits(rw, 0, 2));
 135                 break;
 136         case 14:
 137                 PDEBUG("reg14 IQCAL rx_acal %d rx_pcal %d"
 138                        " tx_acal %d tx_pcal %d",
 139                        bits(rw, 13, 17), bits(rw, 9, 12), bits(rw, 4, 8),
 140                        bits(rw, 0, 3));
 141                 break;
 142         }
 143 }
 144 #endif /* 0 */
 145
 146 static int rf2959_init_hw(struct zd_rf *rf)
 147 {
 148         int r;
 149         struct zd_chip *chip = zd_rf_to_chip(rf);
 150
 151         static const struct zd_ioreq16 ioreqs[] = {
 152                 { CR2,   0x1E }, { CR9,   0x20 }, { CR10,  0x89 },
 153                 { CR11,  0x00 }, { CR15,  0xD0 }, { CR17,  0x68 },
 154                 { CR19,  0x4a }, { CR20,  0x0c }, { CR21,  0x0E },
 155                 { CR23,  0x48 },
 156                 /* normal size for cca threshold */
 157                 { CR24,  0x14 },
 158                 /* { CR24,  0x20 }, */
 159                 { CR26,  0x90 }, { CR27,  0x30 }, { CR29,  0x20 },
 160                 { CR31,  0xb2 }, { CR32,  0x43 }, { CR33,  0x28 },
 161                 { CR38,  0x30 }, { CR34,  0x0f }, { CR35,  0xF0 },
 162                 { CR41,  0x2a }, { CR46,  0x7F }, { CR47,  0x1E },
 163                 { CR51,  0xc5 }, { CR52,  0xc5 }, { CR53,  0xc5 },
 164                 { CR79,  0x58 }, { CR80,  0x30 }, { CR81,  0x30 },
 165                 { CR82,  0x00 }, { CR83,  0x24 }, { CR84,  0x04 },
 166                 { CR85,  0x00 }, { CR86,  0x10 }, { CR87,  0x2A },
 167                 { CR88,  0x10 }, { CR89,  0x24 }, { CR90,  0x18 },
 168                 /* { CR91,  0x18 }, */
 169                 /* should solve continous CTS frame problems */
 170                 { CR91,  0x00 },
 171                 { CR92,  0x0a }, { CR93,  0x00 }, { CR94,  0x01 },
 172                 { CR95,  0x00 }, { CR96,  0x40 }, { CR97,  0x37 },
 173                 { CR98,  0x05 }, { CR99,  0x28 }, { CR100, 0x00 },
 174                 { CR101, 0x13 }, { CR102, 0x27 }, { CR103, 0x27 },
 175                 { CR104, 0x18 }, { CR105, 0x12 },
 176                 /* normal size */
 177                 { CR106, 0x1a },
 178                 /* { CR106, 0x22 }, */
 179                 { CR107, 0x24 }, { CR108, 0x0a }, { CR109, 0x13 },
 180                 { CR110, 0x2F }, { CR111, 0x27 }, { CR112, 0x27 },
 181                 { CR113, 0x27 }, { CR114, 0x27 }, { CR115, 0x40 },
 182                 { CR116, 0x40 }, { CR117, 0xF0 }, { CR118, 0xF0 },
 183                 { CR119, 0x16 },
 184                 /* no TX continuation */
 185                 { CR122, 0x00 },
 186                 /* { CR122, 0xff }, */
 187                 { CR127, 0x03 }, { CR131, 0x08 }, { CR138, 0x28 },
 188                 { CR148, 0x44 }, { CR150, 0x10 }, { CR169, 0xBB },
 189                 { CR170, 0xBB },
 190         };
 191
 192         static const u32 rv[] = {
 193                 0x000007,  /* REG0(CFG1) */
 194                 0x07dd43,  /* REG1(IFPLL1) */
 195                 0x080959,  /* REG2(IFPLL2) */
 196                 0x0e6666,
 197                 0x116a57,  /* REG4 */
 198                 0x17dd43,  /* REG5 */
 199                 0x1819f9,  /* REG6 */
 200                 0x1e6666,
 201                 0x214554,
 202                 0x25e7fa,
 203                 0x27fffa,
 204                 /* The Zydas driver somehow forgets to set this value. It's
 205                  * only set for Japan. We are using internal power control
 206                  * for now.
 207                  */
 208                 0x294128, /* internal power */
 209                 /* 0x28252c, */ /* External control TX power */
 210                 /* CR31_CCK, CR51_6-36M, CR52_48M, CR53_54M */
 211                 0x2c0000,
 212                 0x300000,
 213                 0x340000,  /* REG13(0xD) */
 214                 0x381e0f,  /* REG14(0xE) */
 215                 /* Bogus, RF2959's data sheet doesn't know register 27, which is
 216                  * actually referenced here. The commented 0x11 is 17.
 217                  */
 218                 0x6c180f,  /* REG27(0x11) */
 219         };
 220
 221         r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 222         if (r)
 223                 return r;
 224
 225         return zd_rfwritev_locked(chip, rv, ARRAY_SIZE(rv), RF_RV_BITS);
 226 }
 227
 228 static int rf2959_set_channel(struct zd_rf *rf, u8 channel)
 229 {
 230         int i, r;
 231         const u32 *rv = rf2959_table[channel-1];
 232         struct zd_chip *chip = zd_rf_to_chip(rf);
 233
 234         for (i = 0; i < 2; i++) {
 235                 r = zd_rfwrite_locked(chip, rv[i], RF_RV_BITS);
 236                 if (r)
 237                         return r;
 238         }
 239         return 0;
 240 }
 241
 242 static int rf2959_switch_radio_on(struct zd_rf *rf)
 243 {
 244         static const struct zd_ioreq16 ioreqs[] = {
 245                 { CR10, 0x89 },
 246                 { CR11, 0x00 },
 247         };
 248         struct zd_chip *chip = zd_rf_to_chip(rf);
 249
 250         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 251 }
 252
 253 static int rf2959_switch_radio_off(struct zd_rf *rf)
 254 {
 255         static const struct zd_ioreq16 ioreqs[] = {
 256                 { CR10, 0x15 },
 257                 { CR11, 0x81 },
 258         };
 259         struct zd_chip *chip = zd_rf_to_chip(rf);
 260
 261         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 262 }
 263
 264 int zd_rf_init_rf2959(struct zd_rf *rf)
 265 {
 266         struct zd_chip *chip = zd_rf_to_chip(rf);
 267
 268         if (zd_chip_is_zd1211b(chip)) {
 269                 dev_err(zd_chip_dev(chip),
 270                        "RF2959 is currently not supported for ZD1211B"
 271                        " devices\n");
 272                 return -ENODEV;
 273         }
 274         rf->init_hw = rf2959_init_hw;
 275         rf->set_channel = rf2959_set_channel;
 276         rf->switch_radio_on = rf2959_switch_radio_on;
 277         rf->switch_radio_off = rf2959_switch_radio_off;
 278         return 0;
 279 }