drivers/net/wireless/zd1211rw/zd_rf_al7230b.c

   1 /* zd_rf_al7230b.c: Functions for the AL7230B 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 chan_rv[][2] = {
  25         RF_CHANNEL( 1) = { 0x09ec00, 0x8cccc8 },
  26         RF_CHANNEL( 2) = { 0x09ec00, 0x8cccd8 },
  27         RF_CHANNEL( 3) = { 0x09ec00, 0x8cccc0 },
  28         RF_CHANNEL( 4) = { 0x09ec00, 0x8cccd0 },
  29         RF_CHANNEL( 5) = { 0x05ec00, 0x8cccc8 },
  30         RF_CHANNEL( 6) = { 0x05ec00, 0x8cccd8 },
  31         RF_CHANNEL( 7) = { 0x05ec00, 0x8cccc0 },
  32         RF_CHANNEL( 8) = { 0x05ec00, 0x8cccd0 },
  33         RF_CHANNEL( 9) = { 0x0dec00, 0x8cccc8 },
  34         RF_CHANNEL(10) = { 0x0dec00, 0x8cccd8 },
  35         RF_CHANNEL(11) = { 0x0dec00, 0x8cccc0 },
  36         RF_CHANNEL(12) = { 0x0dec00, 0x8cccd0 },
  37         RF_CHANNEL(13) = { 0x03ec00, 0x8cccc8 },
  38         RF_CHANNEL(14) = { 0x03ec00, 0x866660 },
  39 };
  40
  41 static const u32 std_rv[] = {
  42         0x4ff821,
  43         0xc5fbfc,
  44         0x21ebfe,
  45         0xafd401, /* freq shift 0xaad401 */
  46         0x6cf56a,
  47         0xe04073,
  48         0x193d76,
  49         0x9dd844,
  50         0x500007,
  51         0xd8c010,
  52 };
  53
  54 static int al7230b_init_hw(struct zd_rf *rf)
  55 {
  56         int i, r;
  57         struct zd_chip *chip = zd_rf_to_chip(rf);
  58
  59         /* All of these writes are identical to AL2230 unless otherwise
  60          * specified */
  61         static const struct zd_ioreq16 ioreqs_1[] = {
  62                 /* This one is 7230-specific, and happens before the rest */
  63                 { CR240,  0x57 },
  64                 { },
  65
  66                 { CR15,   0x20 }, { CR23,   0x40 }, { CR24,  0x20 },
  67                 { CR26,   0x11 }, { CR28,   0x3e }, { CR29,  0x00 },
  68                 { CR44,   0x33 },
  69                 /* This value is different for 7230 (was: 0x2a) */
  70                 { CR106,  0x22 },
  71                 { CR107,  0x1a }, { CR109,  0x09 }, { CR110,  0x27 },
  72                 { CR111,  0x2b }, { CR112,  0x2b }, { CR119,  0x0a },
  73                 /* This happened further down in AL2230,
  74                  * and the value changed (was: 0xe0) */
  75                 { CR122,  0xfc },
  76                 { CR10,   0x89 },
  77                 /* for newest (3rd cut) AL2300 */
  78                 { CR17,   0x28 },
  79                 { CR26,   0x93 }, { CR34,   0x30 },
  80                 /* for newest (3rd cut) AL2300 */
  81                 { CR35,   0x3e },
  82                 { CR41,   0x24 }, { CR44,   0x32 },
  83                 /* for newest (3rd cut) AL2300 */
  84                 { CR46,   0x96 },
  85                 { CR47,   0x1e }, { CR79,   0x58 }, { CR80,  0x30 },
  86                 { CR81,   0x30 }, { CR87,   0x0a }, { CR89,  0x04 },
  87                 { CR92,   0x0a }, { CR99,   0x28 },
  88                 /* This value is different for 7230 (was: 0x00) */
  89                 { CR100,  0x02 },
  90                 { CR101,  0x13 }, { CR102,  0x27 },
  91                 /* This value is different for 7230 (was: 0x24) */
  92                 { CR106,  0x22 },
  93                 /* This value is different for 7230 (was: 0x2a) */
  94                 { CR107,  0x3f },
  95                 { CR109,  0x09 },
  96                 /* This value is different for 7230 (was: 0x13) */
  97                 { CR110,  0x1f },
  98                 { CR111,  0x1f }, { CR112,  0x1f }, { CR113, 0x27 },
  99                 { CR114,  0x27 },
 100                 /* for newest (3rd cut) AL2300 */
 101                 { CR115,  0x24 },
 102                 /* This value is different for 7230 (was: 0x24) */
 103                 { CR116,  0x3f },
 104                 /* This value is different for 7230 (was: 0xf4) */
 105                 { CR117,  0xfa },
 106                 { CR118,  0xfc }, { CR119,  0x10 }, { CR120, 0x4f },
 107                 { CR121,  0x77 }, { CR137,  0x88 },
 108                 /* This one is 7230-specific */
 109                 { CR138,  0xa8 },
 110                 /* This value is different for 7230 (was: 0xff) */
 111                 { CR252,  0x34 },
 112                 /* This value is different for 7230 (was: 0xff) */
 113                 { CR253,  0x34 },
 114
 115                 /* PLL_OFF */
 116                 { CR251, 0x2f },
 117         };
 118
 119         static const struct zd_ioreq16 ioreqs_2[] = {
 120                 /* PLL_ON */
 121                 { CR251, 0x3f },
 122                 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
 123                 { CR38, 0x38 }, { CR136, 0xdf },
 124         };
 125
 126         r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
 127         if (r)
 128                 return r;
 129
 130         r = zd_rfwrite_cr_locked(chip, 0x09ec04);
 131         if (r)
 132                 return r;
 133         r = zd_rfwrite_cr_locked(chip, 0x8cccc8);
 134         if (r)
 135                 return r;
 136
 137         for (i = 0; i < ARRAY_SIZE(std_rv); i++) {
 138                 r = zd_rfwrite_cr_locked(chip, std_rv[i]);
 139                 if (r)
 140                         return r;
 141         }
 142
 143         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 144         if (r)
 145                 return r;
 146         r = zd_rfwrite_cr_locked(chip, 0xbfffff);
 147         if (r)
 148                 return r;
 149         r = zd_rfwrite_cr_locked(chip, 0x700000);
 150         if (r)
 151                 return r;
 152         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
 153         if (r)
 154                 return r;
 155
 156         r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
 157         if (r)
 158                 return r;
 159
 160         r = zd_rfwrite_cr_locked(chip, 0xf15d59);
 161         if (r)
 162                 return r;
 163         r = zd_rfwrite_cr_locked(chip, 0xf15d5c);
 164         if (r)
 165                 return r;
 166         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
 167         if (r)
 168                 return r;
 169
 170         r = zd_iowrite16_locked(chip, 0x06, CR203);
 171         if (r)
 172                 return r;
 173         r = zd_iowrite16_locked(chip, 0x80, CR240);
 174         if (r)
 175                 return r;
 176
 177         return 0;
 178 }
 179
 180 static int al7230b_set_channel(struct zd_rf *rf, u8 channel)
 181 {
 182         int i, r;
 183         const u32 *rv = chan_rv[channel-1];
 184         struct zd_chip *chip = zd_rf_to_chip(rf);
 185
 186         struct zd_ioreq16 ioreqs_1[] = {
 187                 { CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
 188                 { CR38,  0x38 }, { CR136, 0xdf },
 189         };
 190
 191         struct zd_ioreq16 ioreqs_2[] = {
 192                 /* PLL_ON */
 193                 { CR251, 0x3f },
 194                 { CR203, 0x06 }, { CR240, 0x08 },
 195         };
 196
 197         r = zd_iowrite16_locked(chip, 0x57, CR240);
 198         if (r)
 199                 return r;
 200
 201         /* PLL_OFF */
 202         r = zd_iowrite16_locked(chip, 0x2f, CR251);
 203         if (r)
 204                 return r;
 205
 206         for (i = 0; i < ARRAY_SIZE(std_rv); i++) {
 207                 r = zd_rfwrite_cr_locked(chip, std_rv[i]);
 208                 if (r)
 209                         return r;
 210         }
 211
 212         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 213         if (r)
 214                 return r;
 215         r = zd_rfwrite_cr_locked(chip, 0xf15d58);
 216         if (r)
 217                 return r;
 218
 219         r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
 220         if (r)
 221                 return r;
 222
 223         for (i = 0; i < 2; i++) {
 224                 r = zd_rfwrite_cr_locked(chip, rv[i]);
 225                 if (r)
 226                         return r;
 227         }
 228
 229         r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 230         if (r)
 231                 return r;
 232
 233         return zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
 234 }
 235
 236 static int al7230b_switch_radio_on(struct zd_rf *rf)
 237 {
 238         struct zd_chip *chip = zd_rf_to_chip(rf);
 239         static const struct zd_ioreq16 ioreqs[] = {
 240                 { CR11,  0x00 },
 241                 { CR251, 0x3f },
 242         };
 243
 244         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 245 }
 246
 247 static int al7230b_switch_radio_off(struct zd_rf *rf)
 248 {
 249         struct zd_chip *chip = zd_rf_to_chip(rf);
 250         static const struct zd_ioreq16 ioreqs[] = {
 251                 { CR11,  0x04 },
 252                 { CR251, 0x2f },
 253         };
 254
 255         return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 256 }
 257
 258 int zd_rf_init_al7230b(struct zd_rf *rf)
 259 {
 260         struct zd_chip *chip = zd_rf_to_chip(rf);
 261
 262         if (chip->is_zd1211b) {
 263                 dev_err(zd_chip_dev(chip), "AL7230B is currently not "
 264                         "supported for ZD1211B devices\n");
 265                 return -ENODEV;
 266         }
 267
 268         rf->init_hw = al7230b_init_hw;
 269         rf->set_channel = al7230b_set_channel;
 270         rf->switch_radio_on = al7230b_switch_radio_on;
 271         rf->switch_radio_off = al7230b_switch_radio_off;
 272         rf->patch_6m_band_edge = 1;
 273         return 0;
 274 }