drivers/staging/rtl8188eu/hal/pwrseqcmd.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  ******************************************************************************/
  19
  20 #include <pwrseqcmd.h>
  21 #include <usb_ops_linux.h>
  22
  23 /* This routine deals with the Power Configuration CMDs parsing
  24  * for RTL8723/RTL8188E Series IC.
  25  */
  26 u8 rtl88eu_pwrseqcmdparsing(struct adapter *padapter, u8 cut_vers,
  27                             struct wl_pwr_cfg pwrseqcmd[])
  28 {
  29         struct wl_pwr_cfg pwrcfgcmd = {0};
  30         u8 poll_bit = false;
  31         u32 aryidx = 0;
  32         u8 value = 0;
  33         u32 offset = 0;
  34         u32 poll_count = 0; /*  polling autoload done. */
  35         u32 max_poll_count = 5000;
  36
  37         do {
  38                 pwrcfgcmd = pwrseqcmd[aryidx];
  39
  40                 RT_TRACE(_module_hal_init_c_, _drv_info_,
  41                          ("rtl88eu_pwrseqcmdparsing: offset(%#x) cut_msk(%#x)"
  42                           " cmd(%#x)"
  43                           "msk(%#x) value(%#x)\n",
  44                          GET_PWR_CFG_OFFSET(pwrcfgcmd),
  45                          GET_PWR_CFG_CUT_MASK(pwrcfgcmd),
  46                          GET_PWR_CFG_CMD(pwrcfgcmd),
  47                          GET_PWR_CFG_MASK(pwrcfgcmd),
  48                          GET_PWR_CFG_VALUE(pwrcfgcmd)));
  49
  50                 /* Only Handle the command whose CUT is matched */
  51                 if (GET_PWR_CFG_CUT_MASK(pwrcfgcmd) & cut_vers) {
  52                         switch (GET_PWR_CFG_CMD(pwrcfgcmd)) {
  53                         case PWR_CMD_READ:
  54                                 RT_TRACE(_module_hal_init_c_, _drv_info_,
  55                                          ("rtl88eu_pwrseqcmdparsing: PWR_CMD_READ\n"));
  56                                 break;
  57                         case PWR_CMD_WRITE:
  58                                 RT_TRACE(_module_hal_init_c_, _drv_info_,
  59                                          ("rtl88eu_pwrseqcmdparsing: PWR_CMD_WRITE\n"));
  60                                 offset = GET_PWR_CFG_OFFSET(pwrcfgcmd);
  61
  62                                 /*  Read the value from system register */
  63                                 value = usb_read8(padapter, offset);
  64
  65                                 value &= ~(GET_PWR_CFG_MASK(pwrcfgcmd));
  66                                 value |= (GET_PWR_CFG_VALUE(pwrcfgcmd) &
  67                                           GET_PWR_CFG_MASK(pwrcfgcmd));
  68
  69                                 /*  Write the value back to system register */
  70                                 usb_write8(padapter, offset, value);
  71                                 break;
  72                         case PWR_CMD_POLLING:
  73                                 RT_TRACE(_module_hal_init_c_, _drv_info_,
  74                                          ("rtl88eu_pwrseqcmdparsing: PWR_CMD_POLLING\n"));
  75
  76                                 poll_bit = false;
  77                                 offset = GET_PWR_CFG_OFFSET(pwrcfgcmd);
  78                                 do {
  79                                         value = usb_read8(padapter, offset);
  80                                         value &= GET_PWR_CFG_MASK(pwrcfgcmd);
  81
  82                                         if (value == (GET_PWR_CFG_VALUE(pwrcfgcmd) &
  83                                                       GET_PWR_CFG_MASK(pwrcfgcmd)))
  84                                                 poll_bit = true;
  85                                         else
  86                                                 udelay(10);
  87
  88                                         if (poll_count++ > max_poll_count) {
  89                                                 DBG_88E("Fail to polling Offset[%#x]\n", offset);
  90                                                 return false;
  91                                         }
  92                                 } while (!poll_bit);
  93                                 break;
  94                         case PWR_CMD_DELAY:
  95                                 RT_TRACE(_module_hal_init_c_, _drv_info_,
  96                                          ("rtl88eu_pwrseqcmdparsing: PWR_CMD_DELAY\n"));
  97                                 if (GET_PWR_CFG_VALUE(pwrcfgcmd) == PWRSEQ_DELAY_US)
  98                                         udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd));
  99                                 else
 100                                         udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd)*1000);
 101                                 break;
 102                         case PWR_CMD_END:
 103                                 /* When this command is parsed, end the process */
 104                                 RT_TRACE(_module_hal_init_c_, _drv_info_,
 105                                          ("rtl88eu_pwrseqcmdparsing: PWR_CMD_END\n"));
 106                                 return true;
 107                         default:
 108                                 RT_TRACE(_module_hal_init_c_, _drv_err_,
 109                                          ("rtl88eu_pwrseqcmdparsing: Unknown CMD!!\n"));
 110                                 break;
 111                         }
 112                 }
 113
 114                 aryidx++;/* Add Array Index */
 115         } while (1);
 116         return true;
 117 }