LXR linux/drivers/staging/rtl8188eu/hal/pwrseqcmd.c

   1// SPDX-License-Identifier: GPL-2.0
   2/******************************************************************************
   3 *
   4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   5 *
   6 ******************************************************************************/
   7
   8#include <pwrseqcmd.h>
   9#include <usb_ops_linux.h>
  10
  11/* This routine deals with the Power Configuration CMDs parsing
  12 * for RTL8723/RTL8188E Series IC.
  13 */
  14u8 rtl88eu_pwrseqcmdparsing(struct adapter *padapter, u8 cut_vers,
  15                            struct wl_pwr_cfg pwrseqcmd[])
  16{
  17        struct wl_pwr_cfg pwrcfgcmd;
  18        u8 poll_bit = false;
  19        u32 aryidx = 0;
  20        u8 value = 0;
  21        u32 offset = 0;
  22        u32 poll_count = 0; /*  polling autoload done. */
  23        u32 max_poll_count = 5000;
  24
  25        do {
  26                pwrcfgcmd = pwrseqcmd[aryidx];
  27
  28                RT_TRACE(_module_hal_init_c_, _drv_info_,
  29                         ("rtl88eu_pwrseqcmdparsing: offset(%#x) cut_msk(%#x)"
  30                          " cmd(%#x)"
  31                          "msk(%#x) value(%#x)\n",
  32                         GET_PWR_CFG_OFFSET(pwrcfgcmd),
  33                         GET_PWR_CFG_CUT_MASK(pwrcfgcmd),
  34                         GET_PWR_CFG_CMD(pwrcfgcmd),
  35                         GET_PWR_CFG_MASK(pwrcfgcmd),
  36                         GET_PWR_CFG_VALUE(pwrcfgcmd)));
  37
  38                /* Only Handle the command whose CUT is matched */
  39                if (GET_PWR_CFG_CUT_MASK(pwrcfgcmd) & cut_vers) {
  40                        switch (GET_PWR_CFG_CMD(pwrcfgcmd)) {
  41                        case PWR_CMD_READ:
  42                                RT_TRACE(_module_hal_init_c_, _drv_info_,
  43                                         ("rtl88eu_pwrseqcmdparsing: PWR_CMD_READ\n"));
  44                                break;
  45                        case PWR_CMD_WRITE:
  46                                RT_TRACE(_module_hal_init_c_, _drv_info_,
  47                                         ("rtl88eu_pwrseqcmdparsing: PWR_CMD_WRITE\n"));
  48                                offset = GET_PWR_CFG_OFFSET(pwrcfgcmd);
  49
  50                                /*  Read the value from system register */
  51                                value = usb_read8(padapter, offset);
  52
  53                                value &= ~(GET_PWR_CFG_MASK(pwrcfgcmd));
  54                                value |= (GET_PWR_CFG_VALUE(pwrcfgcmd) &
  55                                          GET_PWR_CFG_MASK(pwrcfgcmd));
  56
  57                                /*  Write the value back to system register */
  58                                usb_write8(padapter, offset, value);
  59                                break;
  60                        case PWR_CMD_POLLING:
  61                                RT_TRACE(_module_hal_init_c_, _drv_info_,
  62                                         ("rtl88eu_pwrseqcmdparsing: PWR_CMD_POLLING\n"));
  63
  64                                poll_bit = false;
  65                                offset = GET_PWR_CFG_OFFSET(pwrcfgcmd);
  66                                do {
  67                                        value = usb_read8(padapter, offset);
  68                                        value &= GET_PWR_CFG_MASK(pwrcfgcmd);
  69
  70                                        if (value == (GET_PWR_CFG_VALUE(pwrcfgcmd) &
  71                                                      GET_PWR_CFG_MASK(pwrcfgcmd)))
  72                                                poll_bit = true;
  73                                        else
  74                                                udelay(10);
  75
  76                                        if (poll_count++ > max_poll_count) {
  77                                                DBG_88E("Fail to polling Offset[%#x]\n", offset);
  78                                                return false;
  79                                        }
  80                                } while (!poll_bit);
  81                                break;
  82                        case PWR_CMD_DELAY:
  83                                RT_TRACE(_module_hal_init_c_, _drv_info_,
  84                                         ("rtl88eu_pwrseqcmdparsing: PWR_CMD_DELAY\n"));
  85                                if (GET_PWR_CFG_VALUE(pwrcfgcmd) == PWRSEQ_DELAY_US)
  86                                        udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd));
  87                                else
  88                                        udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd)*1000);
  89                                break;
  90                        case PWR_CMD_END:
  91                                /* When this command is parsed, end the process */
  92                                RT_TRACE(_module_hal_init_c_, _drv_info_,
  93                                         ("rtl88eu_pwrseqcmdparsing: PWR_CMD_END\n"));
  94                                return true;
  95                        default:
  96                                RT_TRACE(_module_hal_init_c_, _drv_err_,
  97                                         ("rtl88eu_pwrseqcmdparsing: Unknown CMD!!\n"));
  98                                break;
  99                        }
 100                }
 101
 102                aryidx++;/* Add Array Index */
 103        } while (1);
 104        return true;
 105}
 106