path: root/drivers/staging/vt6656/rf.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * File: rf.c
 *
 * Purpose: rf function code
 *
 * Author: Jerry Chen
 *
 * Date: Feb. 19, 2004
 *
 * Functions:
 *	vnt_rf_write_embedded	- Embedded write RF register via MAC
 *
 * Revision History:
 *	RF_VT3226: RobertYu:20051111, VT3226C0 and before
 *	RF_VT3226D0: RobertYu:20051228
 *	RF_VT3342A0: RobertYu:20060609
 *
 */

#include "mac.h"
#include "rf.h"
#include "baseband.h"
#include "usbpipe.h"

#define CB_AL2230_INIT_SEQ    15
#define AL2230_PWR_IDX_LEN    64

#define CB_AL7230_INIT_SEQ    16
#define AL7230_PWR_IDX_LEN    64

#define CB_VT3226_INIT_SEQ    11
#define VT3226_PWR_IDX_LEN    64

#define CB_VT3342_INIT_SEQ    13
#define VT3342_PWR_IDX_LEN    64

static u8 al2230_init_table[CB_AL2230_INIT_SEQ][3] = {
	{0x03, 0xf7, 0x90},
	{0x03, 0x33, 0x31},
	{0x01, 0xb8, 0x02},
	{0x00, 0xff, 0xf3},
	{0x00, 0x05, 0xa4},
	{0x0f, 0x4d, 0xc5},
	{0x08, 0x05, 0xb6},
	{0x01, 0x47, 0xc7},
	{0x00, 0x06, 0x88},
	{0x04, 0x03, 0xb9},
	{0x00, 0xdb, 0xba},
	{0x00, 0x09, 0x9b},
	{0x0b, 0xdf, 0xfc},
	{0x00, 0x00, 0x0d},
	{0x00, 0x58, 0x0f}
};

static u8 al2230_channel_table0[CB_MAX_CHANNEL_24G][3] = {
	{0x03, 0xf7, 0x90},
	{0x03, 0xf7, 0x90},
	{0x03, 0xe7, 0x90},
	{0x03, 0xe7, 0x90},
	{0x03, 0xf7, 0xa0},
	{0x03, 0xf7, 0xa0},
	{0x03, 0xe7, 0xa0},
	{0x03, 0xe7, 0xa0},
	{0x03, 0xf7, 0xb0},
	{0x03, 0xf7, 0xb0},
	{0x03, 0xe7, 0xb0},
	{0x03, 0xe7, 0xb0},
	{0x03, 0xf7, 0xc0},
	{0x03, 0xe7, 0xc0}
};

static u8 al2230_channel_table1[CB_MAX_CHANNEL_24G][3] = {
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x06, 0x66, 0x61}
};

static u8 al7230_init_table[CB_AL7230_INIT_SEQ][3] = {
	{0x20, 0x37, 0x90},
	{0x13, 0x33, 0x31},
	{0x84, 0x1f, 0xf2},
	{0x3f, 0xdf, 0xa3},
	{0x7f, 0xd7, 0x84},
	{0x80, 0x2b, 0x55},
	{0x56, 0xaf, 0x36},
	{0xce, 0x02, 0x07},
	{0x6e, 0xbc, 0x98},
	{0x22, 0x1b, 0xb9},
	{0xe0, 0x00, 0x0a},
	{0x08, 0x03, 0x1b},
	{0x00, 0x0a, 0x3c},
	{0xff, 0xff, 0xfd},
	{0x00, 0x00, 0x0e},
	{0x1a, 0xba, 0x8f}
};

static u8 al7230_init_table_amode[CB_AL7230_INIT_SEQ][3] = {
	{0x2f, 0xf5, 0x20},
	{0x00, 0x00, 0x01},
	{0x45, 0x1f, 0xe2},
	{0x5f, 0xdf, 0xa3},
	{0x6f, 0xd7, 0x84},
	{0x85, 0x3f, 0x55},
	{0x56, 0xaf, 0x36},
	{0xce, 0x02, 0x07},
	{0x6e, 0xbc, 0x98},
	{0x22, 0x1b, 0xb9},
	{0xe0, 0x60, 0x0a},
	{0x08, 0x03, 0x1b},
	{0x00, 0x14, 0x7c},
	{0xff, 0xff, 0xfd},
	{0x00, 0x00, 0x0e},
	{0x12, 0xba, 0xcf}
};

static u8 al7230_channel_table0[CB_MAX_CHANNEL][3] = {
	{0x20, 0x37, 0x90},
	{0x20, 0x37, 0x90},
	{0x20, 0x37, 0x90},
	{0x20, 0x37, 0x90},
	{0x20, 0x37, 0xa0},
	{0x20, 0x37, 0xa0},
	{0x20, 0x37, 0xa0},
	{0x20, 0x37, 0xa0},
	{0x20, 0x37, 0xb0},
	{0x20, 0x37, 0xb0},
	{0x20, 0x37, 0xb0},
	{0x20, 0x37, 0xb0},
	{0x20, 0x37, 0xc0},
	{0x20, 0x37, 0xc0},
	{0x0f, 0xf5, 0x20}, /* channel 15 Tf = 4915MHz */
	{0x2f, 0xf5, 0x20},
	{0x0f, 0xf5, 0x20},
	{0x0f, 0xf5, 0x20},
	{0x2f, 0xf5, 0x20},
	{0x0f, 0xf5, 0x20},
	{0x2f, 0xf5, 0x30},
	{0x2f, 0xf5, 0x30},
	{0x0f, 0xf5, 0x40},
	{0x2f, 0xf5, 0x40},
	{0x0f, 0xf5, 0x40},
	{0x0f, 0xf5, 0x40},
	{0x2f, 0xf5, 0x40},
	{0x2f, 0xf5, 0x50},
	{0x2f, 0xf5, 0x60},
	{0x2f, 0xf5, 0x60},
	{0x2f, 0xf5, 0x70},
	{0x2f, 0xf5, 0x70},
	{0x2f, 0xf5, 0x70},
	{0x2f, 0xf5, 0x70},
	{0x2f, 0xf5, 0x70},
	{0x2f, 0xf5, 0x70},
	{0x2f, 0xf5, 0x80},
	{0x2f, 0xf5, 0x80},
	{0x2f, 0xf5, 0x80},
	{0x2f, 0xf5, 0x90},
	{0x2f, 0xf5, 0xc0},
	{0x2f, 0xf5, 0xc0},
	{0x2f, 0xf5, 0xc0},
	{0x2f, 0xf5, 0xd0},
	{0x2f, 0xf5, 0xd0},
	{0x2f, 0xf5, 0xd0},
	{0x2f, 0xf5, 0xe0},
	{0x2f, 0xf5, 0xe0},
	{0x2f, 0xf5, 0xe0},
	{0x2f, 0xf5, 0xf0},
	{0x2f, 0xf5, 0xf0},
	{0x2f, 0xf6, 0x00},
	{0x2f, 0xf6, 0x00},
	{0x2f, 0xf6, 0x00},
	{0x2f, 0xf6, 0x10},
	{0x2f, 0xf6, 0x10}
};

static u8 al7230_channel_table1[CB_MAX_CHANNEL][3] = {
	{0x13, 0x33, 0x31},
	{0x1b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x13, 0x33, 0x31},
	{0x1b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x13, 0x33, 0x31},
	{0x1b, 0x33, 0x31},
	{0x03, 0x33, 0x31},
	{0x0b, 0x33, 0x31},
	{0x13, 0x33, 0x31},
	{0x06, 0x66, 0x61},
	{0x1d, 0x55, 0x51}, /* channel = 15, Tf = 4915MHz */
	{0x00, 0x00, 0x01},
	{0x02, 0xaa, 0xa1},
	{0x08, 0x00, 0x01},
	{0x0a, 0xaa, 0xa1},
	{0x0d, 0x55, 0x51},
	{0x15, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x1d, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x02, 0xaa, 0xa1},
	{0x08, 0x00, 0x01},
	{0x0a, 0xaa, 0xa1},
	{0x15, 0x55, 0x51},
	{0x05, 0x55, 0x51},
	{0x0a, 0xaa, 0xa1},
	{0x10, 0x00, 0x01},
	{0x15, 0x55, 0x51},
	{0x1a, 0xaa, 0xa1},
	{0x00, 0x00, 0x01},
	{0x05, 0x55, 0x51},
	{0x0a, 0xaa, 0xa1},
	{0x15, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x0a, 0xaa, 0xa1},
	{0x15, 0x55, 0x51},
	{0x15, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x0a, 0xaa, 0xa1},
	{0x15, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x0a, 0xaa, 0xa1},
	{0x15, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x0a, 0xaa, 0xa1},
	{0x15, 0x55, 0x51},
	{0x00, 0x00, 0x01},
	{0x18, 0x00, 0x01},
	{0x02, 0xaa, 0xa1},
	{0x0d, 0x55, 0x51},
	{0x18, 0x00, 0x01},
	{0x02, 0xaa, 0xb1}
};

static u8 al7230_channel_table2[CB_MAX_CHANNEL][3] = {
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84}, /* channel = 15 Tf = 4915MHz */
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x6f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84},
	{0x7f, 0xd7, 0x84}
};

static u8 vt3226_init_table[CB_VT3226_INIT_SEQ][3] = {
	{0x03, 0xff, 0x80},
	{0x02, 0x82, 0xa1},
	{0x03, 0xc6, 0xa2},
	{0x01, 0x97, 0x93},
	{0x03, 0x66, 0x64},
	{0x00, 0x61, 0xa5},
	{0x01, 0x7b, 0xd6},
	{0x00, 0x80, 0x17},
	{0x03, 0xf8, 0x08},
	{0x00, 0x02, 0x39},
	{0x02, 0x00, 0x2a}
};

static u8 vt3226d0_init_table[CB_VT3226_INIT_SEQ][3] = {
	{0x03, 0xff, 0x80},
	{0x03, 0x02, 0x21},
	{0x03, 0xc6, 0xa2},
	{0x01, 0x97, 0x93},
	{0x03, 0x66, 0x64},
	{0x00, 0x71, 0xa5},
	{0x01, 0x15, 0xc6},
	{0x01, 0x2e, 0x07},
	{0x00, 0x58, 0x08},
	{0x00, 0x02, 0x79},
	{0x02, 0x01, 0xaa}
};

static u8 vt3226_channel_table0[CB_MAX_CHANNEL_24G][3] = {
	{0x01, 0x97, 0x83},
	{0x01, 0x97, 0x83},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0x93},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xa3},
	{0x01, 0x97, 0xb3},
	{0x01, 0x97, 0xb3},
	{0x01, 0x97, 0xb3},
	{0x03, 0x37, 0xc3}
};

static u8 vt3226_channel_table1[CB_MAX_CHANNEL_24G][3] = {
	{0x02, 0x66, 0x64},
	{0x03, 0x66, 0x64},
	{0x00, 0x66, 0x64},
	{0x01, 0x66, 0x64},
	{0x02, 0x66, 0x64},
	{0x03, 0x66, 0x64},
	{0x00, 0x66, 0x64},
	{0x01, 0x66, 0x64},
	{0x02, 0x66, 0x64},
	{0x03, 0x66, 0x64},
	{0x00, 0x66, 0x64},
	{0x01, 0x66, 0x64},
	{0x02, 0x66, 0x64},
	{0x00, 0xcc, 0xc4}
};

static const u32 vt3226d0_lo_current_table[CB_MAX_CHANNEL_24G] = {
	0x0135c600,
	0x0135c600,
	0x0235c600,
	0x0235c600,
	0x0235c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0335c600,
	0x0135c600
};

static u8 vt3342a0_init_table[CB_VT3342_INIT_SEQ][3] = { /* 11b/g mode */
	{0x03, 0xff, 0x80},
	{0x02, 0x08, 0x81},
	{0x00, 0xc6, 0x02},
	{0x03, 0xc5, 0x13},
	{0x00, 0xee, 0xe4},
	{0x00, 0x71, 0xa5},
	{0x01, 0x75, 0x46},
	{0x01, 0x40, 0x27},
	{0x01, 0x54, 0x08},
	{0x00, 0x01, 0x69},
	{0x02, 0x00, 0xaa},
	{0x00, 0x08, 0xcb},
	{0x01, 0x70, 0x0c}
};

static u8 vt3342_channel_table0[CB_MAX_CHANNEL][3] = {
	{0x02, 0x05, 0x03},
	{0x01, 0x15, 0x03},
	{0x03, 0xc5, 0x03},
	{0x02, 0x65, 0x03},
	{0x01, 0x15, 0x13},
	{0x03, 0xc5, 0x13},
	{0x02, 0x05, 0x13},
	{0x01, 0x15, 0x13},
	{0x03, 0xc5, 0x13},
	{0x02, 0x65, 0x13},
	{0x01, 0x15, 0x23},
	{0x03, 0xc5, 0x23},
	{0x02, 0x05, 0x23},
	{0x00, 0xd5, 0x23},
	{0x01, 0x15, 0x13}, /* channel = 15 Tf = 4915MHz */
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x15, 0x13},
	{0x01, 0x55, 0x63},
	{0x01, 0x55, 0x63},
	{0x02, 0xa5, 0x63},
	{0x02, 0xa5, 0x63},
	{0x00, 0x05, 0x73},
	{0x00, 0x05, 0x73},
	{0x01, 0x55, 0x73},
	{0x02, 0xa5, 0x73},
	{0x00, 0x05, 0x83},
	{0x01, 0x55, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x02, 0xa5, 0x83},
	{0x00, 0x05, 0xF3},
	{0x01, 0x56, 0x03},
	{0x02, 0xa6, 0x03},
	{0x00, 0x06, 0x03},
	{0x00, 0x06, 0x03}
};

static u8 vt3342_channel_table1[CB_MAX_CHANNEL][3] = {
	{0x01, 0x99, 0x94},
	{0x02, 0x44, 0x44},
	{0x02, 0xee, 0xe4},
	{0x03, 0x99, 0x94},
	{0x00, 0x44, 0x44},
	{0x00, 0xee, 0xe4},
	{0x01, 0x99, 0x94},
	{0x02, 0x44, 0x44},
	{0x02, 0xee, 0xe4},
	{0x03, 0x99, 0x94},
	{0x00, 0x44, 0x44},
	{0x00, 0xee, 0xe4},
	{0x01, 0x99, 0x94},
	{0x03, 0x33, 0x34},
	{0x00, 0x44, 0x44}, /* channel = 15 Tf = 4915MHz */
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x00, 0x44, 0x44},
	{0x01, 0x55, 0x54},
	{0x01, 0x55, 0x54},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x00, 0x00, 0x04},
	{0x00, 0x00, 0x04},
	{0x01, 0x55, 0x54},
	{0x02, 0xaa, 0xa4},
	{0x00, 0x00, 0x04},
	{0x01, 0x55, 0x54},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x02, 0xaa, 0xa4},
	{0x03, 0x00, 0x04},
	{0x00, 0x55, 0x54},
	{0x01, 0xaa, 0xa4},
	{0x03, 0x00, 0x04},
	{0x03, 0x00, 0x04}
};

/* Power Table */
static const u32 al2230_power_table[AL2230_PWR_IDX_LEN] = {
	0x04040900,
	0x04041900,
	0x04042900,
	0x04043900,
	0x04044900,
	0x04045900,
	0x04046900,
	0x04047900,
	0x04048900,
	0x04049900,
	0x0404a900,
	0x0404b900,
	0x0404c900,
	0x0404d900,
	0x0404e900,
	0x0404f900,
	0x04050900,
	0x04051900,
	0x04052900,
	0x04053900,
	0x04054900,
	0x04055900,
	0x04056900,
	0x04057900,
	0x04058900,
	0x04059900,
	0x0405a900,
	0x0405b900,
	0x0405c900,
	0x0405d900,
	0x0405e900,
	0x0405f900,
	0x04060900,
	0x04061900,
	0x04062900,
	0x04063900,
	0x04064900,
	0x04065900,
	0x04066900,
	0x04067900,
	0x04068900,
	0x04069900,
	0x0406a900,
	0x0406b900,
	0x0406c900,
	0x0406d900,
	0x0406e900,
	0x0406f900,
	0x04070900,
	0x04071900,
	0x04072900,
	0x04073900,
	0x04074900,
	0x04075900,
	0x04076900,
	0x04077900,
	0x04078900,
	0x04079900,
	0x0407a900,
	0x0407b900,
	0x0407c900,
	0x0407d900,
	0x0407e900,
	0x0407f900
};

/*
 * Description: Write to IF/RF, by embedded programming
 */
int vnt_rf_write_embedded(struct vnt_private *priv, u32 data)
{
	u8 reg_data[4];

	data |= (VNT_RF_REG_LEN << 3) | IFREGCTL_REGW;

	reg_data[0] = (u8)data;
	reg_data[1] = (u8)(data >> 8);
	reg_data[2] = (u8)(data >> 16);
	reg_data[3] = (u8)(data >> 24);

	vnt_control_out(priv, MESSAGE_TYPE_WRITE_IFRF,
			0, 0, ARRAY_SIZE(reg_data), reg_data);

	return true;
}

/* Set Tx power by rate and channel number */
int vnt_rf_setpower(struct vnt_private *priv, u32 rate, u32 channel)
{
	u8 power = priv->cck_pwr;

	if (channel == 0)
		return -EINVAL;

	switch (rate) {
	case RATE_1M:
	case RATE_2M:
	case RATE_5M:
	case RATE_11M:
		channel--;

		if (channel < sizeof(priv->cck_pwr_tbl))
			power = priv->cck_pwr_tbl[channel];
		break;
	case RATE_6M:
	case RATE_9M:
	case RATE_12M:
	case RATE_18M:
	case RATE_24M:
	case RATE_36M:
	case RATE_48M:
	case RATE_54M:
		if (channel > CB_MAX_CHANNEL_24G)
			power = priv->ofdm_a_pwr_tbl[channel - 15];
		else
			power = priv->ofdm_pwr_tbl[channel - 1];
		break;
	}

	return vnt_rf_set_txpower(priv, power, rate);
}

static u8 vnt_rf_addpower(struct vnt_private *priv)
{
	s32 rssi = -priv->current_rssi;

	if (!rssi)
		return 7;

	if (priv->rf_type == RF_VT3226D0) {
		if (rssi < -70)
			return 9;
		else if (rssi < -65)
			return 7;
		else if (rssi < -60)
			return 5;
	} else {
		if (rssi < -80)
			return 9;
		else if (rssi < -75)
			return 7;
		else if (rssi < -70)
			return 5;
	}

	return 0;
}

/* Set Tx power by power level and rate */
int vnt_rf_set_txpower(struct vnt_private *priv, u8 power, u32 rate)
{
	u32 power_setting = 0;
	int ret = true;

	power += vnt_rf_addpower(priv);
	if (power > VNT_RF_MAX_POWER)
		power = VNT_RF_MAX_POWER;

	if (priv->power == power)
		return true;

	priv->power = power;

	switch (priv->rf_type) {
	case RF_AL2230:
		if (power >= AL2230_PWR_IDX_LEN)
			return false;

		ret &= vnt_rf_write_embedded(priv, al2230_power_table[power]);

		if (rate <= RATE_11M)
			ret &= vnt_rf_write_embedded(priv, 0x0001b400);
		else
			ret &= vnt_rf_write_embedded(priv, 0x0005a400);
		break;
	case RF_AL2230S:
		if (power >= AL2230_PWR_IDX_LEN)
			return false;

		ret &= vnt_rf_write_embedded(priv, al2230_power_table[power]);

		if (rate <= RATE_11M) {
			ret &= vnt_rf_write_embedded(priv, 0x040c1400);
			ret &= vnt_rf_write_embedded(priv, 0x00299b00);
		} else {
			ret &= vnt_rf_write_embedded(priv, 0x0005a400);
			ret &= vnt_rf_write_embedded(priv, 0x00099b00);
		}
		break;

	case RF_AIROHA7230:
		if (rate <= RATE_11M)
			ret &= vnt_rf_write_embedded(priv, 0x111bb900);
		else
			ret &= vnt_rf_write_embedded(priv, 0x221bb900);

		if (power >= AL7230_PWR_IDX_LEN)
			return false;

		/*
		 * 0x080F1B00 for 3 wire control TxGain(D10)
		 * and 0x31 as TX Gain value
		 */
		power_setting = 0x080c0b00 | (power << 12);

		ret &= vnt_rf_write_embedded(priv, power_setting);

		break;

	case RF_VT3226:
		if (power >= VT3226_PWR_IDX_LEN)
			return false;
		power_setting = ((0x3f - power) << 20) | (0x17 << 8);

		ret &= vnt_rf_write_embedded(priv, power_setting);

		break;
	case RF_VT3226D0:
		if (power >= VT3226_PWR_IDX_LEN)
			return false;

		if (rate <= RATE_11M) {
			u16 hw_value = priv->hw->conf.chandef.chan->hw_value;

			power_setting = ((0x3f - power) << 20) | (0xe07 << 8);

			ret &= vnt_rf_write_embedded(priv, power_setting);
			ret &= vnt_rf_write_embedded(priv, 0x03c6a200);

			dev_dbg(&priv->usb->dev,
				"%s 11b channel [%d]\n", __func__, hw_value);

			hw_value--;

			if (hw_value < ARRAY_SIZE(vt3226d0_lo_current_table))
				ret &= vnt_rf_write_embedded(priv,
					vt3226d0_lo_current_table[hw_value]);

			ret &= vnt_rf_write_embedded(priv, 0x015C0800);
		} else {
			dev_dbg(&priv->usb->dev,
				"@@@@ %s> 11G mode\n", __func__);

			power_setting = ((0x3f - power) << 20) | (0x7 << 8);

			ret &= vnt_rf_write_embedded(priv, power_setting);
			ret &= vnt_rf_write_embedded(priv, 0x00C6A200);
			ret &= vnt_rf_write_embedded(priv, 0x016BC600);
			ret &= vnt_rf_write_embedded(priv, 0x00900800);
		}
		break;

	case RF_VT3342A0:
		if (power >= VT3342_PWR_IDX_LEN)
			return false;

		power_setting =  ((0x3f - power) << 20) | (0x27 << 8);

		ret &= vnt_rf_write_embedded(priv, power_setting);

		break;
	default:
		break;
	}
	return ret;
}

/* Convert rssi to dbm */
void vnt_rf_rssi_to_dbm(struct vnt_private *priv, u8 rssi, long *dbm)
{
	u8 idx = ((rssi & 0xc0) >> 6) & 0x03;
	long b = rssi & 0x3f;
	long a = 0;
	u8 airoharf[4] = {0, 18, 0, 40};

	switch (priv->rf_type) {
	case RF_AL2230:
	case RF_AL2230S:
	case RF_AIROHA7230:
	case RF_VT3226:
	case RF_VT3226D0:
	case RF_VT3342A0:
		a = airoharf[idx];
		break;
	default:
		break;
	}

	*dbm = -1 * (a + b * 2);
}

int vnt_rf_table_download(struct vnt_private *priv)
{
	int ret = 0;
	u16 length1 = 0, length2 = 0, length3 = 0;
	u8 *addr1 = NULL, *addr2 = NULL, *addr3 = NULL;
	u16 length, value;
	u8 array[256];

	switch (priv->rf_type) {
	case RF_AL2230:
	case RF_AL2230S:
		length1 = CB_AL2230_INIT_SEQ * 3;
		length2 = CB_MAX_CHANNEL_24G * 3;
		length3 = CB_MAX_CHANNEL_24G * 3;
		addr1 = &al2230_init_table[0][0];
		addr2 = &al2230_channel_table0[0][0];
		addr3 = &al2230_channel_table1[0][0];
		break;
	case RF_AIROHA7230:
		length1 = CB_AL7230_INIT_SEQ * 3;
		length2 = CB_MAX_CHANNEL * 3;
		length3 = CB_MAX_CHANNEL * 3;
		addr1 = &al7230_init_table[0][0];
		addr2 = &al7230_channel_table0[0][0];
		addr3 = &al7230_channel_table1[0][0];
		break;
	case RF_VT3226:
		length1 = CB_VT3226_INIT_SEQ * 3;
		length2 = CB_MAX_CHANNEL_24G * 3;
		length3 = CB_MAX_CHANNEL_24G * 3;
		addr1 = &vt3226_init_table[0][0];
		addr2 = &vt3226_channel_table0[0][0];
		addr3 = &vt3226_channel_table1[0][0];
		break;
	case RF_VT3226D0:
		length1 = CB_VT3226_INIT_SEQ * 3;
		length2 = CB_MAX_CHANNEL_24G * 3;
		length3 = CB_MAX_CHANNEL_24G * 3;
		addr1 = &vt3226d0_init_table[0][0];
		addr2 = &vt3226_channel_table0[0][0];
		addr3 = &vt3226_channel_table1[0][0];
		break;
	case RF_VT3342A0:
		length1 = CB_VT3342_INIT_SEQ * 3;
		length2 = CB_MAX_CHANNEL * 3;
		length3 = CB_MAX_CHANNEL * 3;
		addr1 = &vt3342a0_init_table[0][0];
		addr2 = &vt3342_channel_table0[0][0];
		addr3 = &vt3342_channel_table1[0][0];
		break;
	}

	/* Init Table */
	memcpy(array, addr1, length1);

	ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
			      MESSAGE_REQUEST_RF_INIT, length1, array);
	if (ret)
		goto end;

	/* Channel Table 0 */
	value = 0;
	while (length2 > 0) {
		if (length2 >= 64)
			length = 64;
		else
			length = length2;

		memcpy(array, addr2, length);

		ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, value,
				      MESSAGE_REQUEST_RF_CH0, length, array);
		if (ret)
			goto end;

		length2 -= length;
		value += length;
		addr2 += length;
	}

	/* Channel table 1 */
	value = 0;
	while (length3 > 0) {
		if (length3 >= 64)
			length = 64;
		else
			length = length3;

		memcpy(array, addr3, length);

		ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, value,
				      MESSAGE_REQUEST_RF_CH1, length, array);
		if (ret)
			goto end;

		length3 -= length;
		value += length;
		addr3 += length;
	}

	if (priv->rf_type == RF_AIROHA7230) {
		length1 = CB_AL7230_INIT_SEQ * 3;
		length2 = CB_MAX_CHANNEL * 3;
		addr1 = &al7230_init_table_amode[0][0];
		addr2 = &al7230_channel_table2[0][0];

		memcpy(array, addr1, length1);

		/* Init Table 2 */
		ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, 0,
				      MESSAGE_REQUEST_RF_INIT2, length1, array);
		if (ret)
			goto end;

		/* Channel Table 0 */
		value = 0;
		while (length2 > 0) {
			if (length2 >= 64)
				length = 64;
			else
				length = length2;

			memcpy(array, addr2, length);

			ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, value,
					      MESSAGE_REQUEST_RF_CH2, length,
					      array);
			if (ret)
				goto end;

			length2 -= length;
			value += length;
			addr2 += length;
		}
	}

end:
	return ret;
}