// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* File: card.c
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* Purpose: Provide functions to setup NIC operation mode
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* Functions:
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* vnt_set_rspinf - Set RSPINF
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* vnt_update_ifs - Update slotTime,SIFS,DIFS, and EIFS
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* vnt_update_top_rates - Update BasicTopRate
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* vnt_add_basic_rate - Add to BasicRateSet
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* vnt_ofdm_min_rate - Check if any OFDM rate is in BasicRateSet
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* vnt_get_tsf_offset - Calculate TSFOffset
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* vnt_get_current_tsf - Read Current NIC TSF counter
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* vnt_get_next_tbtt - Calculate Next Beacon TSF counter
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* vnt_reset_next_tbtt - Set NIC Beacon time
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* vnt_update_next_tbtt - Sync. NIC Beacon time
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* vnt_radio_power_off - Turn Off NIC Radio Power
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* vnt_radio_power_on - Turn On NIC Radio Power
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*
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* Revision History:
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* 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.
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* 08-26-2003 Kyle Hsu: Modify the definition type of dwIoBase.
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* 09-01-2003 Bryan YC Fan: Add vnt_update_ifs().
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*
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*/
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#include <linux/bitops.h>
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#include <linux/errno.h>
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#include "device.h"
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#include "card.h"
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#include "baseband.h"
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#include "mac.h"
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#include "desc.h"
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#include "rf.h"
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#include "power.h"
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#include "key.h"
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#include "usbpipe.h"
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/* const u16 cw_rxbcntsf_off[MAX_RATE] =
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* {17, 34, 96, 192, 34, 23, 17, 11, 8, 5, 4, 3};
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*/
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static const u16 cw_rxbcntsf_off[MAX_RATE] = {
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192, 96, 34, 17, 34, 23, 17, 11, 8, 5, 4, 3
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};
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int vnt_set_channel(struct vnt_private *priv, u32 connection_channel)
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{
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int ret;
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if (connection_channel > CB_MAX_CHANNEL || !connection_channel)
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return -EINVAL;
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/* clear NAV */
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vnt_mac_reg_bits_on(priv, MAC_REG_MACCR, MACCR_CLRNAV);
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/* Set Channel[7] = 0 to tell H/W channel is changing now. */
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vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL,
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(BIT(7) | BIT(5) | BIT(4)));
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ret = vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,
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connection_channel, 0, 0, NULL);
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if (ret)
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return ret;
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return vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,
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(u8)(connection_channel | 0x80));
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}
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static const u8 vnt_rspinf_b_short_table[] = {
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0x70, 0x00, 0x00, 0x00, 0x38, 0x00, 0x09, 0x00,
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0x15, 0x00, 0x0a, 0x00, 0x0b, 0x00, 0x0b, 0x80
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};
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static const u8 vnt_rspinf_b_long_table[] = {
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0x70, 0x00, 0x00, 0x00, 0x38, 0x00, 0x01, 0x00,
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0x15, 0x00, 0x02, 0x00, 0x0b, 0x00, 0x03, 0x80
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};
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static const u8 vnt_rspinf_a_table[] = {
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0x9b, 0x18, 0x9f, 0x10, 0x9a, 0x0a, 0x9e, 0x08, 0x99,
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0x08, 0x9d, 0x04, 0x98, 0x04, 0x9c, 0x04, 0x9c, 0x04
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};
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static const u8 vnt_rspinf_gb_table[] = {
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0x8b, 0x1e, 0x8f, 0x16, 0x8a, 0x12, 0x8e, 0x0e, 0x89,
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0x0e, 0x8d, 0x0a, 0x88, 0x0a, 0x8c, 0x0a, 0x8c, 0x0a
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};
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int vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)
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{
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const u8 *data;
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u16 len;
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int ret;
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if (priv->preamble_type) {
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data = vnt_rspinf_b_short_table;
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len = ARRAY_SIZE(vnt_rspinf_b_short_table);
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} else {
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data = vnt_rspinf_b_long_table;
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len = ARRAY_SIZE(vnt_rspinf_b_long_table);
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}
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/* RSPINF_b_1 to RSPINF_b_11 */
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ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_B_1,
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MESSAGE_REQUEST_MACREG, len, data);
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if (ret)
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return ret;
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if (bb_type == BB_TYPE_11A) {
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data = vnt_rspinf_a_table;
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len = ARRAY_SIZE(vnt_rspinf_a_table);
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} else {
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data = vnt_rspinf_gb_table;
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len = ARRAY_SIZE(vnt_rspinf_gb_table);
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}
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/* RSPINF_a_6 to RSPINF_a_72 */
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return vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_A_6,
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MESSAGE_REQUEST_MACREG, len, data);
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}
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int vnt_update_ifs(struct vnt_private *priv)
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{
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u8 max_min = 0;
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u8 data[4];
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int ret;
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if (priv->packet_type == PK_TYPE_11A) {
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priv->slot = C_SLOT_SHORT;
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priv->sifs = C_SIFS_A;
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priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;
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max_min = 4;
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} else {
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priv->sifs = C_SIFS_BG;
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if (priv->short_slot_time) {
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priv->slot = C_SLOT_SHORT;
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max_min = 4;
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} else {
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priv->slot = C_SLOT_LONG;
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max_min = 5;
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}
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priv->difs = C_SIFS_BG + 2 * priv->slot;
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}
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priv->eifs = C_EIFS;
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data[0] = (u8)priv->sifs;
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data[1] = (u8)priv->difs;
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data[2] = (u8)priv->eifs;
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data[3] = (u8)priv->slot;
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ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,
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MESSAGE_REQUEST_MACREG, 4, &data[0]);
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if (ret)
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return ret;
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max_min |= 0xa0;
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return vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,
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MESSAGE_REQUEST_MACREG, 1, &max_min);
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}
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void vnt_update_top_rates(struct vnt_private *priv)
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{
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int pos;
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pos = fls(priv->basic_rates & GENMASK(RATE_54M, RATE_6M));
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priv->top_ofdm_basic_rate = pos ? (pos - 1) : RATE_24M;
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pos = fls(priv->basic_rates & GENMASK(RATE_11M, RATE_1M));
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priv->top_cck_basic_rate = pos ? (pos - 1) : RATE_1M;
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}
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bool vnt_ofdm_min_rate(struct vnt_private *priv)
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{
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return priv->basic_rates & GENMASK(RATE_54M, RATE_6M) ? true : false;
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}
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u8 vnt_get_pkt_type(struct vnt_private *priv)
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{
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if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)
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return (u8)priv->bb_type;
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else if (vnt_ofdm_min_rate(priv))
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return PK_TYPE_11GA;
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return PK_TYPE_11GB;
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}
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/*
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* Description: Calculate TSF offset of two TSF input
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* Get TSF Offset from RxBCN's TSF and local TSF
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*
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* Parameters:
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* In:
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* rx_rate - rx rate.
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* tsf1 - Rx BCN's TSF
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* tsf2 - Local TSF
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* Out:
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* none
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*
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* Return Value: TSF Offset value
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*
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*/
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u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)
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{
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return tsf1 - tsf2 - (u64)cw_rxbcntsf_off[rx_rate % MAX_RATE];
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}
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int vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,
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u64 time_stamp, u64 local_tsf)
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{
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u64 tsf_offset = 0;
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u8 data[8];
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tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);
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data[0] = (u8)tsf_offset;
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data[1] = (u8)(tsf_offset >> 8);
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data[2] = (u8)(tsf_offset >> 16);
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data[3] = (u8)(tsf_offset >> 24);
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data[4] = (u8)(tsf_offset >> 32);
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data[5] = (u8)(tsf_offset >> 40);
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data[6] = (u8)(tsf_offset >> 48);
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data[7] = (u8)(tsf_offset >> 56);
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return vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
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MESSAGE_REQUEST_TSF, 0, 8, data);
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}
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/*
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* Description: Read NIC TSF counter
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* Get local TSF counter
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*
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* Parameters:
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* In:
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* priv - The adapter to be read
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* Out:
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* current_tsf - Current TSF counter
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*
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* Return Value: true if success; otherwise false
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*
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*/
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bool vnt_get_current_tsf(struct vnt_private *priv, u64 *current_tsf)
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{
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*current_tsf = priv->current_tsf;
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return true;
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}
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/*
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* Description: Clear NIC TSF counter
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* Clear local TSF counter
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*
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* Parameters:
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* In:
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* priv - The adapter to be read
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*
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* Return Value: true if success; otherwise false
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*
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*/
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bool vnt_clear_current_tsf(struct vnt_private *priv)
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{
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vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
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priv->current_tsf = 0;
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return true;
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}
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/*
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* Description: Read NIC TSF counter
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* Get NEXTTBTT from adjusted TSF and Beacon Interval
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*
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* Parameters:
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* In:
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* tsf - Current TSF counter
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* beacon_interval - Beacon Interval
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* Out:
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* tsf - Current TSF counter
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*
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* Return Value: TSF value of next Beacon
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*
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*/
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u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)
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{
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u32 beacon_int;
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beacon_int = beacon_interval * 1024;
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/* Next TBTT =
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* ((local_current_TSF / beacon_interval) + 1) * beacon_interval
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*/
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if (beacon_int) {
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do_div(tsf, beacon_int);
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tsf += 1;
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tsf *= beacon_int;
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}
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return tsf;
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}
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int vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)
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{
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u64 next_tbtt = 0;
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u8 data[8];
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vnt_clear_current_tsf(priv);
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next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);
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data[0] = (u8)next_tbtt;
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data[1] = (u8)(next_tbtt >> 8);
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data[2] = (u8)(next_tbtt >> 16);
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data[3] = (u8)(next_tbtt >> 24);
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data[4] = (u8)(next_tbtt >> 32);
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data[5] = (u8)(next_tbtt >> 40);
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data[6] = (u8)(next_tbtt >> 48);
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data[7] = (u8)(next_tbtt >> 56);
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return vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
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MESSAGE_REQUEST_TBTT, 0, 8, data);
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}
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int vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,
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u16 beacon_interval)
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{
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u8 data[8];
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int ret;
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tsf = vnt_get_next_tbtt(tsf, beacon_interval);
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data[0] = (u8)tsf;
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data[1] = (u8)(tsf >> 8);
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data[2] = (u8)(tsf >> 16);
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data[3] = (u8)(tsf >> 24);
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data[4] = (u8)(tsf >> 32);
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data[5] = (u8)(tsf >> 40);
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data[6] = (u8)(tsf >> 48);
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data[7] = (u8)(tsf >> 56);
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ret = vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
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MESSAGE_REQUEST_TBTT, 0, 8, data);
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if (ret)
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return ret;
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dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);
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return 0;
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}
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/*
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* Description: Turn off Radio power
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*
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* Parameters:
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* In:
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* priv - The adapter to be turned off
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* Out:
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* none
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*
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* Return Value: true if success; otherwise false
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*
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*/
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int vnt_radio_power_off(struct vnt_private *priv)
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{
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int ret = 0;
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switch (priv->rf_type) {
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case RF_AL2230:
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case RF_AL2230S:
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case RF_AIROHA7230:
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case RF_VT3226:
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case RF_VT3226D0:
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case RF_VT3342A0:
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ret = vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,
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(SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
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break;
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}
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if (ret)
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goto end;
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ret = vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
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if (ret)
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goto end;
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ret = vnt_set_deep_sleep(priv);
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if (ret)
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goto end;
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ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
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end:
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return ret;
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}
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/*
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* Description: Turn on Radio power
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*
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* Parameters:
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* In:
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* priv - The adapter to be turned on
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* Out:
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* none
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*
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* Return Value: true if success; otherwise false
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*
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*/
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int vnt_radio_power_on(struct vnt_private *priv)
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{
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int ret = 0;
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ret = vnt_exit_deep_sleep(priv);
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if (ret)
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return ret;
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ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
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if (ret)
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return ret;
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switch (priv->rf_type) {
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case RF_AL2230:
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case RF_AL2230S:
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case RF_AIROHA7230:
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case RF_VT3226:
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case RF_VT3226D0:
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case RF_VT3342A0:
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ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
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(SOFTPWRCTL_SWPE2 |
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SOFTPWRCTL_SWPE3));
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if (ret)
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return ret;
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}
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return vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
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}
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int vnt_set_bss_mode(struct vnt_private *priv)
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{
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int ret;
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unsigned char type = priv->bb_type;
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unsigned char data = 0;
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unsigned char bb_vga_0 = 0x1c;
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unsigned char bb_vga_2_3 = 0x00;
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if (priv->rf_type == RF_AIROHA7230 && priv->bb_type == BB_TYPE_11A)
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type = BB_TYPE_11G;
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ret = vnt_mac_set_bb_type(priv, type);
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if (ret)
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return ret;
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priv->packet_type = vnt_get_pkt_type(priv);
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if (priv->bb_type == BB_TYPE_11A) {
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data = 0x03;
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bb_vga_0 = 0x20;
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bb_vga_2_3 = 0x10;
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} else if (priv->bb_type == BB_TYPE_11B) {
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data = 0x02;
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} else if (priv->bb_type == BB_TYPE_11G) {
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data = 0x08;
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}
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if (data) {
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ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
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0x88, data);
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if (ret)
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return ret;
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}
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ret = vnt_update_ifs(priv);
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if (ret)
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return ret;
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ret = vnt_set_rspinf(priv, priv->bb_type);
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if (ret)
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return ret;
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if (priv->rf_type == RF_AIROHA7230) {
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priv->bb_vga[0] = bb_vga_0;
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ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
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0xe7, priv->bb_vga[0]);
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if (ret)
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return ret;
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}
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priv->bb_vga[2] = bb_vga_2_3;
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priv->bb_vga[3] = bb_vga_2_3;
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return vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
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}
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