xref: /drivers/net/wireless/rtl818x/rtl8187/rtl8225.c

/*
 * Radio tuning for RTL8225 on RTL8187
 *
 * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
 * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
 *
 * Based on the r8187 driver, which is:
 * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
 *
 * Magic delays, register offsets, and phy value tables below are
 * taken from the original r8187 driver sources.  Thanks to Realtek
 * for their support!
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/usb.h>
#include <net/mac80211.h>

#include "rtl8187.h"
#include "rtl8225.h"

static void rtl8225_write_bitbang(struct ieee80211_hw *dev, u8 addr, u16 data)
{
	struct rtl8187_priv *priv = dev->priv;
	u16 reg80, reg84, reg82;
	u32 bangdata;
	int i;

	bangdata = (data << 4) | (addr & 0xf);

	reg80 = rtl818x_ioread16(priv, &priv->map->RFPinsOutput) & 0xfff3;
	reg82 = rtl818x_ioread16(priv, &priv->map->RFPinsEnable);

	rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, reg82 | 0x7);

	reg84 = rtl818x_ioread16(priv, &priv->map->RFPinsSelect);
	rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, reg84 | 0x7);
	udelay(10);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	udelay(2);
	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80);
	udelay(10);

	for (i = 15; i >= 0; i--) {
		u16 reg = reg80 | (bangdata & (1 << i)) >> i;

		if (i & 1)
			rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg);

		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg | (1 << 1));
		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg | (1 << 1));

		if (!(i & 1))
			rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg);
	}

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	udelay(10);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, reg84);
}

static void rtl8225_write_8051(struct ieee80211_hw *dev, u8 addr, __le16 data)
{
	struct rtl8187_priv *priv = dev->priv;
	u16 reg80, reg82, reg84;

	reg80 = rtl818x_ioread16(priv, &priv->map->RFPinsOutput);
	reg82 = rtl818x_ioread16(priv, &priv->map->RFPinsEnable);
	reg84 = rtl818x_ioread16(priv, &priv->map->RFPinsSelect);

	reg80 &= ~(0x3 << 2);
	reg84 &= ~0xF;

	rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, reg82 | 0x0007);
	rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, reg84 | 0x0007);
	udelay(10);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	udelay(2);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80);
	udelay(10);

	mutex_lock(&priv->io_mutex);

	priv->io_dmabuf->bits16 = data;
	usb_control_msg(priv->udev, usb_sndctrlpipe(priv->udev, 0),
			RTL8187_REQ_SET_REG, RTL8187_REQT_WRITE,
			addr, 0x8225, &priv->io_dmabuf->bits16, sizeof(data),
			HZ / 2);

	mutex_unlock(&priv->io_mutex);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	udelay(10);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, reg84);
}

static void rtl8225_write(struct ieee80211_hw *dev, u8 addr, u16 data)
{
	struct rtl8187_priv *priv = dev->priv;

	if (priv->asic_rev)
		rtl8225_write_8051(dev, addr, cpu_to_le16(data));
	else
		rtl8225_write_bitbang(dev, addr, data);
}

static u16 rtl8225_read(struct ieee80211_hw *dev, u8 addr)
{
	struct rtl8187_priv *priv = dev->priv;
	u16 reg80, reg82, reg84, out;
	int i;

	reg80 = rtl818x_ioread16(priv, &priv->map->RFPinsOutput);
	reg82 = rtl818x_ioread16(priv, &priv->map->RFPinsEnable);
	reg84 = rtl818x_ioread16(priv, &priv->map->RFPinsSelect);

	reg80 &= ~0xF;

	rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, reg82 | 0x000F);
	rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, reg84 | 0x000F);

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80 | (1 << 2));
	udelay(4);
	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg80);
	udelay(5);

	for (i = 4; i >= 0; i--) {
		u16 reg = reg80 | ((addr >> i) & 1);

		if (!(i & 1)) {
			rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg);
			udelay(1);
		}

		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg | (1 << 1));
		udelay(2);
		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg | (1 << 1));
		udelay(2);

		if (i & 1) {
			rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, reg);
			udelay(1);
		}
	}

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
			  reg80 | (1 << 3) | (1 << 1));
	udelay(2);
	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
			  reg80 | (1 << 3));
	udelay(2);
	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
			  reg80 | (1 << 3));
	udelay(2);

	out = 0;
	for (i = 11; i >= 0; i--) {
		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg80 | (1 << 3));
		udelay(1);
		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg80 | (1 << 3) | (1 << 1));
		udelay(2);
		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg80 | (1 << 3) | (1 << 1));
		udelay(2);
		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg80 | (1 << 3) | (1 << 1));
		udelay(2);

		if (rtl818x_ioread16(priv, &priv->map->RFPinsInput) & (1 << 1))
			out |= 1 << i;

		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
				  reg80 | (1 << 3));
		udelay(2);
	}

	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput,
			  reg80 | (1 << 3) | (1 << 2));
	udelay(2);

	rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, reg82);
	rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, reg84);
	rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x03A0);

	return out;
}

static const u16 rtl8225bcd_rxgain[] = {
	0x0400, 0x0401, 0x0402, 0x0403, 0x0404, 0x0405, 0x0408, 0x0409,
	0x040a, 0x040b, 0x0502, 0x0503, 0x0504, 0x0505, 0x0540, 0x0541,
	0x0542, 0x0543, 0x0544, 0x0545, 0x0580, 0x0581, 0x0582, 0x0583,
	0x0584, 0x0585, 0x0588, 0x0589, 0x058a, 0x058b, 0x0643, 0x0644,
	0x0645, 0x0680, 0x0681, 0x0682, 0x0683, 0x0684, 0x0685, 0x0688,
	0x0689, 0x068a, 0x068b, 0x068c, 0x0742, 0x0743, 0x0744, 0x0745,
	0x0780, 0x0781, 0x0782, 0x0783, 0x0784, 0x0785, 0x0788, 0x0789,
	0x078a, 0x078b, 0x078c, 0x078d, 0x0790, 0x0791, 0x0792, 0x0793,
	0x0794, 0x0795, 0x0798, 0x0799, 0x079a, 0x079b, 0x079c, 0x079d,
	0x07a0, 0x07a1, 0x07a2, 0x07a3, 0x07a4, 0x07a5, 0x07a8, 0x07a9,
	0x07aa, 0x07ab, 0x07ac, 0x07ad, 0x07b0, 0x07b1, 0x07b2, 0x07b3,
	0x07b4, 0x07b5, 0x07b8, 0x07b9, 0x07ba, 0x07bb, 0x07bb
};

static const u8 rtl8225_agc[] = {
	0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e,
	0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98, 0x97, 0x96,
	0x95, 0x94, 0x93, 0x92, 0x91, 0x90, 0x8f, 0x8e,
	0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, 0x87, 0x86,
	0x85, 0x84, 0x83, 0x82, 0x81, 0x80, 0x3f, 0x3e,
	0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36,
	0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f, 0x2e,
	0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26,
	0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x1f, 0x1e,
	0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16,
	0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e,
	0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06,
	0x05, 0x04, 0x03, 0x02, 0x01, 0x01, 0x01, 0x01,
	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01
};

static const u8 rtl8225_gain[] = {
	0x23, 0x88, 0x7c, 0xa5,	/* -82dBm */
	0x23, 0x88, 0x7c, 0xb5,	/* -82dBm */
	0x23, 0x88, 0x7c, 0xc5,	/* -82dBm */
	0x33, 0x80, 0x79, 0xc5,	/* -78dBm */
	0x43, 0x78, 0x76, 0xc5,	/* -74dBm */
	0x53, 0x60, 0x73, 0xc5,	/* -70dBm */
	0x63, 0x58, 0x70, 0xc5,	/* -66dBm */
};

static const u8 rtl8225_threshold[] = {
	0x8d, 0x8d, 0x8d, 0x8d, 0x9d, 0xad, 0xbd
};

static const u8 rtl8225_tx_gain_cck_ofdm[] = {
	0x02, 0x06, 0x0e, 0x1e, 0x3e, 0x7e
};

static const u8 rtl8225_tx_power_cck[] = {
	0x18, 0x17, 0x15, 0x11, 0x0c, 0x08, 0x04, 0x02,
	0x1b, 0x1a, 0x17, 0x13, 0x0e, 0x09, 0x04, 0x02,
	0x1f, 0x1e, 0x1a, 0x15, 0x10, 0x0a, 0x05, 0x02,
	0x22, 0x21, 0x1d, 0x18, 0x11, 0x0b, 0x06, 0x02,
	0x26, 0x25, 0x21, 0x1b, 0x14, 0x0d, 0x06, 0x03,
	0x2b, 0x2a, 0x25, 0x1e, 0x16, 0x0e, 0x07, 0x03
};

static const u8 rtl8225_tx_power_cck_ch14[] = {
	0x18, 0x17, 0x15, 0x0c, 0x00, 0x00, 0x00, 0x00,
	0x1b, 0x1a, 0x17, 0x0e, 0x00, 0x00, 0x00, 0x00,
	0x1f, 0x1e, 0x1a, 0x0f, 0x00, 0x00, 0x00, 0x00,
	0x22, 0x21, 0x1d, 0x11, 0x00, 0x00, 0x00, 0x00,
	0x26, 0x25, 0x21, 0x13, 0x00, 0x00, 0x00, 0x00,
	0x2b, 0x2a, 0x25, 0x15, 0x00, 0x00, 0x00, 0x00
};

static const u8 rtl8225_tx_power_ofdm[] = {
	0x80, 0x90, 0xa2, 0xb5, 0xcb, 0xe4
};

static const u32 rtl8225_chan[] = {
	0x085c, 0x08dc, 0x095c, 0x09dc, 0x0a5c, 0x0adc, 0x0b5c,
	0x0bdc, 0x0c5c, 0x0cdc, 0x0d5c, 0x0ddc, 0x0e5c, 0x0f72
};

static void rtl8225_rf_set_tx_power(struct ieee80211_hw *dev, int channel)
{
	struct rtl8187_priv *priv = dev->priv;
	u8 cck_power, ofdm_power;
	const u8 *tmp;
	u32 reg;
	int i;

	cck_power = priv->channels[channel - 1].hw_value & 0xF;
	ofdm_power = priv->channels[channel - 1].hw_value >> 4;

	cck_power = min(cck_power, (u8)11);
	if (ofdm_power > (u8)15)
		ofdm_power = 25;
	else
		ofdm_power += 10;

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_CCK,
			 rtl8225_tx_gain_cck_ofdm[cck_power / 6] >> 1);

	if (channel == 14)
		tmp = &rtl8225_tx_power_cck_ch14[(cck_power % 6) * 8];
	else
		tmp = &rtl8225_tx_power_cck[(cck_power % 6) * 8];

	for (i = 0; i < 8; i++)
		rtl8225_write_phy_cck(dev, 0x44 + i, *tmp++);

	msleep(1); // FIXME: optional?

	/* anaparam2 on */
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
			reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
	rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
			  RTL8187_RTL8225_ANAPARAM2_ON);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
			reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	rtl8225_write_phy_ofdm(dev, 2, 0x42);
	rtl8225_write_phy_ofdm(dev, 6, 0x00);
	rtl8225_write_phy_ofdm(dev, 8, 0x00);

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_OFDM,
			 rtl8225_tx_gain_cck_ofdm[ofdm_power / 6] >> 1);

	tmp = &rtl8225_tx_power_ofdm[ofdm_power % 6];

	rtl8225_write_phy_ofdm(dev, 5, *tmp);
	rtl8225_write_phy_ofdm(dev, 7, *tmp);

	msleep(1);
}

static void rtl8225_rf_init(struct ieee80211_hw *dev)
{
	struct rtl8187_priv *priv = dev->priv;
	int i;

	rtl8225_write(dev, 0x0, 0x067);
	rtl8225_write(dev, 0x1, 0xFE0);
	rtl8225_write(dev, 0x2, 0x44D);
	rtl8225_write(dev, 0x3, 0x441);
	rtl8225_write(dev, 0x4, 0x486);
	rtl8225_write(dev, 0x5, 0xBC0);
	rtl8225_write(dev, 0x6, 0xAE6);
	rtl8225_write(dev, 0x7, 0x82A);
	rtl8225_write(dev, 0x8, 0x01F);
	rtl8225_write(dev, 0x9, 0x334);
	rtl8225_write(dev, 0xA, 0xFD4);
	rtl8225_write(dev, 0xB, 0x391);
	rtl8225_write(dev, 0xC, 0x050);
	rtl8225_write(dev, 0xD, 0x6DB);
	rtl8225_write(dev, 0xE, 0x029);
	rtl8225_write(dev, 0xF, 0x914); msleep(100);

	rtl8225_write(dev, 0x2, 0xC4D); msleep(200);
	rtl8225_write(dev, 0x2, 0x44D); msleep(200);

	if (!(rtl8225_read(dev, 6) & (1 << 7))) {
		rtl8225_write(dev, 0x02, 0x0c4d);
		msleep(200);
		rtl8225_write(dev, 0x02, 0x044d);
		msleep(100);
		if (!(rtl8225_read(dev, 6) & (1 << 7)))
			wiphy_warn(dev->wiphy, "RF Calibration Failed! %x\n",
				   rtl8225_read(dev, 6));
	}

	rtl8225_write(dev, 0x0, 0x127);

	for (i = 0; i < ARRAY_SIZE(rtl8225bcd_rxgain); i++) {
		rtl8225_write(dev, 0x1, i + 1);
		rtl8225_write(dev, 0x2, rtl8225bcd_rxgain[i]);
	}

	rtl8225_write(dev, 0x0, 0x027);
	rtl8225_write(dev, 0x0, 0x22F);

	for (i = 0; i < ARRAY_SIZE(rtl8225_agc); i++) {
		rtl8225_write_phy_ofdm(dev, 0xB, rtl8225_agc[i]);
		rtl8225_write_phy_ofdm(dev, 0xA, 0x80 + i);
	}

	msleep(1);

	rtl8225_write_phy_ofdm(dev, 0x00, 0x01);
	rtl8225_write_phy_ofdm(dev, 0x01, 0x02);
	rtl8225_write_phy_ofdm(dev, 0x02, 0x42);
	rtl8225_write_phy_ofdm(dev, 0x03, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x04, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x05, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x06, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x07, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x08, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x09, 0xfe);
	rtl8225_write_phy_ofdm(dev, 0x0a, 0x09);
	rtl8225_write_phy_ofdm(dev, 0x0b, 0x80);
	rtl8225_write_phy_ofdm(dev, 0x0c, 0x01);
	rtl8225_write_phy_ofdm(dev, 0x0e, 0xd3);
	rtl8225_write_phy_ofdm(dev, 0x0f, 0x38);
	rtl8225_write_phy_ofdm(dev, 0x10, 0x84);
	rtl8225_write_phy_ofdm(dev, 0x11, 0x06);
	rtl8225_write_phy_ofdm(dev, 0x12, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x13, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x14, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x15, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x16, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x17, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x18, 0xef);
	rtl8225_write_phy_ofdm(dev, 0x19, 0x19);
	rtl8225_write_phy_ofdm(dev, 0x1a, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x1b, 0x76);
	rtl8225_write_phy_ofdm(dev, 0x1c, 0x04);
	rtl8225_write_phy_ofdm(dev, 0x1e, 0x95);
	rtl8225_write_phy_ofdm(dev, 0x1f, 0x75);
	rtl8225_write_phy_ofdm(dev, 0x20, 0x1f);
	rtl8225_write_phy_ofdm(dev, 0x21, 0x27);
	rtl8225_write_phy_ofdm(dev, 0x22, 0x16);
	rtl8225_write_phy_ofdm(dev, 0x24, 0x46);
	rtl8225_write_phy_ofdm(dev, 0x25, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x26, 0x90);
	rtl8225_write_phy_ofdm(dev, 0x27, 0x88);

	rtl8225_write_phy_ofdm(dev, 0x0d, rtl8225_gain[2 * 4]);
	rtl8225_write_phy_ofdm(dev, 0x1b, rtl8225_gain[2 * 4 + 2]);
	rtl8225_write_phy_ofdm(dev, 0x1d, rtl8225_gain[2 * 4 + 3]);
	rtl8225_write_phy_ofdm(dev, 0x23, rtl8225_gain[2 * 4 + 1]);

	rtl8225_write_phy_cck(dev, 0x00, 0x98);
	rtl8225_write_phy_cck(dev, 0x03, 0x20);
	rtl8225_write_phy_cck(dev, 0x04, 0x7e);
	rtl8225_write_phy_cck(dev, 0x05, 0x12);
	rtl8225_write_phy_cck(dev, 0x06, 0xfc);
	rtl8225_write_phy_cck(dev, 0x07, 0x78);
	rtl8225_write_phy_cck(dev, 0x08, 0x2e);
	rtl8225_write_phy_cck(dev, 0x10, 0x9b);
	rtl8225_write_phy_cck(dev, 0x11, 0x88);
	rtl8225_write_phy_cck(dev, 0x12, 0x47);
	rtl8225_write_phy_cck(dev, 0x13, 0xd0);
	rtl8225_write_phy_cck(dev, 0x19, 0x00);
	rtl8225_write_phy_cck(dev, 0x1a, 0xa0);
	rtl8225_write_phy_cck(dev, 0x1b, 0x08);
	rtl8225_write_phy_cck(dev, 0x40, 0x86);
	rtl8225_write_phy_cck(dev, 0x41, 0x8d);
	rtl8225_write_phy_cck(dev, 0x42, 0x15);
	rtl8225_write_phy_cck(dev, 0x43, 0x18);
	rtl8225_write_phy_cck(dev, 0x44, 0x1f);
	rtl8225_write_phy_cck(dev, 0x45, 0x1e);
	rtl8225_write_phy_cck(dev, 0x46, 0x1a);
	rtl8225_write_phy_cck(dev, 0x47, 0x15);
	rtl8225_write_phy_cck(dev, 0x48, 0x10);
	rtl8225_write_phy_cck(dev, 0x49, 0x0a);
	rtl8225_write_phy_cck(dev, 0x4a, 0x05);
	rtl8225_write_phy_cck(dev, 0x4b, 0x02);
	rtl8225_write_phy_cck(dev, 0x4c, 0x05);

	rtl818x_iowrite8(priv, &priv->map->TESTR, 0x0D);

	rtl8225_rf_set_tx_power(dev, 1);

	/* RX antenna default to A */
	rtl8225_write_phy_cck(dev, 0x10, 0x9b);			/* B: 0xDB */
	rtl8225_write_phy_ofdm(dev, 0x26, 0x90);		/* B: 0x10 */

	rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);	/* B: 0x00 */
	msleep(1);
	rtl818x_iowrite32(priv, (__le32 *)0xFF94, 0x3dc00002);

	/* set sensitivity */
	rtl8225_write(dev, 0x0c, 0x50);
	rtl8225_write_phy_ofdm(dev, 0x0d, rtl8225_gain[2 * 4]);
	rtl8225_write_phy_ofdm(dev, 0x1b, rtl8225_gain[2 * 4 + 2]);
	rtl8225_write_phy_ofdm(dev, 0x1d, rtl8225_gain[2 * 4 + 3]);
	rtl8225_write_phy_ofdm(dev, 0x23, rtl8225_gain[2 * 4 + 1]);
	rtl8225_write_phy_cck(dev, 0x41, rtl8225_threshold[2]);
}

static const u8 rtl8225z2_agc[] = {
	0x5e, 0x5e, 0x5e, 0x5e, 0x5d, 0x5b, 0x59, 0x57, 0x55, 0x53, 0x51, 0x4f,
	0x4d, 0x4b, 0x49, 0x47, 0x45, 0x43, 0x41, 0x3f, 0x3d, 0x3b, 0x39, 0x37,
	0x35, 0x33, 0x31, 0x2f, 0x2d, 0x2b, 0x29, 0x27, 0x25, 0x23, 0x21, 0x1f,
	0x1d, 0x1b, 0x19, 0x17, 0x15, 0x13, 0x11, 0x0f, 0x0d, 0x0b, 0x09, 0x07,
	0x05, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
	0x01, 0x01, 0x01, 0x01, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19,
	0x19, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x26, 0x27, 0x27, 0x28,
	0x28, 0x29, 0x2a, 0x2a, 0x2a, 0x2b, 0x2b, 0x2b, 0x2c, 0x2c, 0x2c, 0x2d,
	0x2d, 0x2d, 0x2d, 0x2e, 0x2e, 0x2e, 0x2e, 0x2f, 0x2f, 0x2f, 0x30, 0x30,
	0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31,
	0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x31
};
static const u8 rtl8225z2_ofdm[] = {
	0x10, 0x0d, 0x01, 0x00, 0x14, 0xfb, 0xfb, 0x60,
	0x00, 0x60, 0x00, 0x00, 0x00, 0x5c, 0x00, 0x00,
	0x40, 0x00, 0x40, 0x00, 0x00, 0x00, 0xa8, 0x26,
	0x32, 0x33, 0x07, 0xa5, 0x6f, 0x55, 0xc8, 0xb3,
	0x0a, 0xe1, 0x2C, 0x8a, 0x86, 0x83, 0x34, 0x0f,
	0x4f, 0x24, 0x6f, 0xc2, 0x6b, 0x40, 0x80, 0x00,
	0xc0, 0xc1, 0x58, 0xf1, 0x00, 0xe4, 0x90, 0x3e,
	0x6d, 0x3c, 0xfb, 0x07
};

static const u8 rtl8225z2_tx_power_cck_ch14[] = {
	0x36, 0x35, 0x2e, 0x1b, 0x00, 0x00, 0x00, 0x00,
	0x30, 0x2f, 0x29, 0x15, 0x00, 0x00, 0x00, 0x00,
	0x30, 0x2f, 0x29, 0x15, 0x00, 0x00, 0x00, 0x00,
	0x30, 0x2f, 0x29, 0x15, 0x00, 0x00, 0x00, 0x00
};

static const u8 rtl8225z2_tx_power_cck[] = {
	0x36, 0x35, 0x2e, 0x25, 0x1c, 0x12, 0x09, 0x04,
	0x30, 0x2f, 0x29, 0x21, 0x19, 0x10, 0x08, 0x03,
	0x2b, 0x2a, 0x25, 0x1e, 0x16, 0x0e, 0x07, 0x03,
	0x26, 0x25, 0x21, 0x1b, 0x14, 0x0d, 0x06, 0x03
};

static const u8 rtl8225z2_tx_power_ofdm[] = {
	0x42, 0x00, 0x40, 0x00, 0x40
};

static const u8 rtl8225z2_tx_gain_cck_ofdm[] = {
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
	0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
	0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
	0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
	0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23
};

static void rtl8225z2_rf_set_tx_power(struct ieee80211_hw *dev, int channel)
{
	struct rtl8187_priv *priv = dev->priv;
	u8 cck_power, ofdm_power;
	const u8 *tmp;
	u32 reg;
	int i;

	cck_power = priv->channels[channel - 1].hw_value & 0xF;
	ofdm_power = priv->channels[channel - 1].hw_value >> 4;

	cck_power = min(cck_power, (u8)15);
	cck_power += priv->txpwr_base & 0xF;
	cck_power = min(cck_power, (u8)35);

	if (ofdm_power > (u8)15)
		ofdm_power = 25;
	else
		ofdm_power += 10;
	ofdm_power += priv->txpwr_base >> 4;
	ofdm_power = min(ofdm_power, (u8)35);

	if (channel == 14)
		tmp = rtl8225z2_tx_power_cck_ch14;
	else
		tmp = rtl8225z2_tx_power_cck;

	for (i = 0; i < 8; i++)
		rtl8225_write_phy_cck(dev, 0x44 + i, *tmp++);

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_CCK,
			 rtl8225z2_tx_gain_cck_ofdm[cck_power]);
	msleep(1);

	/* anaparam2 on */
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
			reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
	rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
			  RTL8187_RTL8225_ANAPARAM2_ON);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
			reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	rtl8225_write_phy_ofdm(dev, 2, 0x42);
	rtl8225_write_phy_ofdm(dev, 5, 0x00);
	rtl8225_write_phy_ofdm(dev, 6, 0x40);
	rtl8225_write_phy_ofdm(dev, 7, 0x00);
	rtl8225_write_phy_ofdm(dev, 8, 0x40);

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_OFDM,
			 rtl8225z2_tx_gain_cck_ofdm[ofdm_power]);
	msleep(1);
}

static void rtl8225z2_b_rf_set_tx_power(struct ieee80211_hw *dev, int channel)
{
	struct rtl8187_priv *priv = dev->priv;
	u8 cck_power, ofdm_power;
	const u8 *tmp;
	int i;

	cck_power = priv->channels[channel - 1].hw_value & 0xF;
	ofdm_power = priv->channels[channel - 1].hw_value >> 4;

	if (cck_power > 15)
		cck_power = (priv->hw_rev == RTL8187BvB) ? 15 : 22;
	else
		cck_power += (priv->hw_rev == RTL8187BvB) ? 0 : 7;
	cck_power += priv->txpwr_base & 0xF;
	cck_power = min(cck_power, (u8)35);

	if (ofdm_power > 15)
		ofdm_power = (priv->hw_rev == RTL8187BvB) ? 17 : 25;
	else
		ofdm_power += (priv->hw_rev == RTL8187BvB) ? 2 : 10;
	ofdm_power += (priv->txpwr_base >> 4) & 0xF;
	ofdm_power = min(ofdm_power, (u8)35);

	if (channel == 14)
		tmp = rtl8225z2_tx_power_cck_ch14;
	else
		tmp = rtl8225z2_tx_power_cck;

	if (priv->hw_rev == RTL8187BvB) {
		if (cck_power <= 6)
			; /* do nothing */
		else if (cck_power <= 11)
			tmp += 8;
		else
			tmp += 16;
	} else {
		if (cck_power <= 5)
			; /* do nothing */
		else if (cck_power <= 11)
			tmp += 8;
		else if (cck_power <= 17)
			tmp += 16;
		else
			tmp += 24;
	}

	for (i = 0; i < 8; i++)
		rtl8225_write_phy_cck(dev, 0x44 + i, *tmp++);

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_CCK,
			 rtl8225z2_tx_gain_cck_ofdm[cck_power] << 1);
	msleep(1);

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_OFDM,
			 rtl8225z2_tx_gain_cck_ofdm[ofdm_power] << 1);
	if (priv->hw_rev == RTL8187BvB) {
		if (ofdm_power <= 11) {
			rtl8225_write_phy_ofdm(dev, 0x87, 0x60);
			rtl8225_write_phy_ofdm(dev, 0x89, 0x60);
		} else {
			rtl8225_write_phy_ofdm(dev, 0x87, 0x5c);
			rtl8225_write_phy_ofdm(dev, 0x89, 0x5c);
		}
	} else {
		if (ofdm_power <= 11) {
			rtl8225_write_phy_ofdm(dev, 0x87, 0x5c);
			rtl8225_write_phy_ofdm(dev, 0x89, 0x5c);
		} else if (ofdm_power <= 17) {
			rtl8225_write_phy_ofdm(dev, 0x87, 0x54);
			rtl8225_write_phy_ofdm(dev, 0x89, 0x54);
		} else {
			rtl8225_write_phy_ofdm(dev, 0x87, 0x50);
			rtl8225_write_phy_ofdm(dev, 0x89, 0x50);
		}
	}
	msleep(1);
}

static const u16 rtl8225z2_rxgain[] = {
	0x0400, 0x0401, 0x0402, 0x0403, 0x0404, 0x0405, 0x0408, 0x0409,
	0x040a, 0x040b, 0x0502, 0x0503, 0x0504, 0x0505, 0x0540, 0x0541,
	0x0542, 0x0543, 0x0544, 0x0545, 0x0580, 0x0581, 0x0582, 0x0583,
	0x0584, 0x0585, 0x0588, 0x0589, 0x058a, 0x058b, 0x0643, 0x0644,
	0x0645, 0x0680, 0x0681, 0x0682, 0x0683, 0x0684, 0x0685, 0x0688,
	0x0689, 0x068a, 0x068b, 0x068c, 0x0742, 0x0743, 0x0744, 0x0745,
	0x0780, 0x0781, 0x0782, 0x0783, 0x0784, 0x0785, 0x0788, 0x0789,
	0x078a, 0x078b, 0x078c, 0x078d, 0x0790, 0x0791, 0x0792, 0x0793,
	0x0794, 0x0795, 0x0798, 0x0799, 0x079a, 0x079b, 0x079c, 0x079d,
	0x07a0, 0x07a1, 0x07a2, 0x07a3, 0x07a4, 0x07a5, 0x07a8, 0x07a9,
	0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03b0, 0x03b1, 0x03b2, 0x03b3,
	0x03b4, 0x03b5, 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bb
};

static const u8 rtl8225z2_gain_bg[] = {
	0x23, 0x15, 0xa5, /* -82-1dBm */
	0x23, 0x15, 0xb5, /* -82-2dBm */
	0x23, 0x15, 0xc5, /* -82-3dBm */
	0x33, 0x15, 0xc5, /* -78dBm */
	0x43, 0x15, 0xc5, /* -74dBm */
	0x53, 0x15, 0xc5, /* -70dBm */
	0x63, 0x15, 0xc5  /* -66dBm */
};

static void rtl8225z2_rf_init(struct ieee80211_hw *dev)
{
	struct rtl8187_priv *priv = dev->priv;
	int i;

	rtl8225_write(dev, 0x0, 0x2BF);
	rtl8225_write(dev, 0x1, 0xEE0);
	rtl8225_write(dev, 0x2, 0x44D);
	rtl8225_write(dev, 0x3, 0x441);
	rtl8225_write(dev, 0x4, 0x8C3);
	rtl8225_write(dev, 0x5, 0xC72);
	rtl8225_write(dev, 0x6, 0x0E6);
	rtl8225_write(dev, 0x7, 0x82A);
	rtl8225_write(dev, 0x8, 0x03F);
	rtl8225_write(dev, 0x9, 0x335);
	rtl8225_write(dev, 0xa, 0x9D4);
	rtl8225_write(dev, 0xb, 0x7BB);
	rtl8225_write(dev, 0xc, 0x850);
	rtl8225_write(dev, 0xd, 0xCDF);
	rtl8225_write(dev, 0xe, 0x02B);
	rtl8225_write(dev, 0xf, 0x114);
	msleep(100);

	rtl8225_write(dev, 0x0, 0x1B7);

	for (i = 0; i < ARRAY_SIZE(rtl8225z2_rxgain); i++) {
		rtl8225_write(dev, 0x1, i + 1);
		rtl8225_write(dev, 0x2, rtl8225z2_rxgain[i]);
	}

	rtl8225_write(dev, 0x3, 0x080);
	rtl8225_write(dev, 0x5, 0x004);
	rtl8225_write(dev, 0x0, 0x0B7);
	rtl8225_write(dev, 0x2, 0xc4D);

	msleep(200);
	rtl8225_write(dev, 0x2, 0x44D);
	msleep(100);

	if (!(rtl8225_read(dev, 6) & (1 << 7))) {
		rtl8225_write(dev, 0x02, 0x0C4D);
		msleep(200);
		rtl8225_write(dev, 0x02, 0x044D);
		msleep(100);
		if (!(rtl8225_read(dev, 6) & (1 << 7)))
			wiphy_warn(dev->wiphy, "RF Calibration Failed! %x\n",
				   rtl8225_read(dev, 6));
	}

	msleep(200);

	rtl8225_write(dev, 0x0, 0x2BF);

	for (i = 0; i < ARRAY_SIZE(rtl8225_agc); i++) {
		rtl8225_write_phy_ofdm(dev, 0xB, rtl8225_agc[i]);
		rtl8225_write_phy_ofdm(dev, 0xA, 0x80 + i);
	}

	msleep(1);

	rtl8225_write_phy_ofdm(dev, 0x00, 0x01);
	rtl8225_write_phy_ofdm(dev, 0x01, 0x02);
	rtl8225_write_phy_ofdm(dev, 0x02, 0x42);
	rtl8225_write_phy_ofdm(dev, 0x03, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x04, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x05, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x06, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x07, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x08, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x09, 0xfe);
	rtl8225_write_phy_ofdm(dev, 0x0a, 0x08);
	rtl8225_write_phy_ofdm(dev, 0x0b, 0x80);
	rtl8225_write_phy_ofdm(dev, 0x0c, 0x01);
	rtl8225_write_phy_ofdm(dev, 0x0d, 0x43);
	rtl8225_write_phy_ofdm(dev, 0x0e, 0xd3);
	rtl8225_write_phy_ofdm(dev, 0x0f, 0x38);
	rtl8225_write_phy_ofdm(dev, 0x10, 0x84);
	rtl8225_write_phy_ofdm(dev, 0x11, 0x07);
	rtl8225_write_phy_ofdm(dev, 0x12, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x13, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x14, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x15, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x16, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x17, 0x40);
	rtl8225_write_phy_ofdm(dev, 0x18, 0xef);
	rtl8225_write_phy_ofdm(dev, 0x19, 0x19);
	rtl8225_write_phy_ofdm(dev, 0x1a, 0x20);
	rtl8225_write_phy_ofdm(dev, 0x1b, 0x15);
	rtl8225_write_phy_ofdm(dev, 0x1c, 0x04);
	rtl8225_write_phy_ofdm(dev, 0x1d, 0xc5);
	rtl8225_write_phy_ofdm(dev, 0x1e, 0x95);
	rtl8225_write_phy_ofdm(dev, 0x1f, 0x75);
	rtl8225_write_phy_ofdm(dev, 0x20, 0x1f);
	rtl8225_write_phy_ofdm(dev, 0x21, 0x17);
	rtl8225_write_phy_ofdm(dev, 0x22, 0x16);
	rtl8225_write_phy_ofdm(dev, 0x23, 0x80);
	rtl8225_write_phy_ofdm(dev, 0x24, 0x46);
	rtl8225_write_phy_ofdm(dev, 0x25, 0x00);
	rtl8225_write_phy_ofdm(dev, 0x26, 0x90);
	rtl8225_write_phy_ofdm(dev, 0x27, 0x88);

	rtl8225_write_phy_ofdm(dev, 0x0b, rtl8225z2_gain_bg[4 * 3]);
	rtl8225_write_phy_ofdm(dev, 0x1b, rtl8225z2_gain_bg[4 * 3 + 1]);
	rtl8225_write_phy_ofdm(dev, 0x1d, rtl8225z2_gain_bg[4 * 3 + 2]);
	rtl8225_write_phy_ofdm(dev, 0x21, 0x37);

	rtl8225_write_phy_cck(dev, 0x00, 0x98);
	rtl8225_write_phy_cck(dev, 0x03, 0x20);
	rtl8225_write_phy_cck(dev, 0x04, 0x7e);
	rtl8225_write_phy_cck(dev, 0x05, 0x12);
	rtl8225_write_phy_cck(dev, 0x06, 0xfc);
	rtl8225_write_phy_cck(dev, 0x07, 0x78);
	rtl8225_write_phy_cck(dev, 0x08, 0x2e);
	rtl8225_write_phy_cck(dev, 0x10, 0x9b);
	rtl8225_write_phy_cck(dev, 0x11, 0x88);
	rtl8225_write_phy_cck(dev, 0x12, 0x47);
	rtl8225_write_phy_cck(dev, 0x13, 0xd0);
	rtl8225_write_phy_cck(dev, 0x19, 0x00);
	rtl8225_write_phy_cck(dev, 0x1a, 0xa0);
	rtl8225_write_phy_cck(dev, 0x1b, 0x08);
	rtl8225_write_phy_cck(dev, 0x40, 0x86);
	rtl8225_write_phy_cck(dev, 0x41, 0x8d);
	rtl8225_write_phy_cck(dev, 0x42, 0x15);
	rtl8225_write_phy_cck(dev, 0x43, 0x18);
	rtl8225_write_phy_cck(dev, 0x44, 0x36);
	rtl8225_write_phy_cck(dev, 0x45, 0x35);
	rtl8225_write_phy_cck(dev, 0x46, 0x2e);
	rtl8225_write_phy_cck(dev, 0x47, 0x25);
	rtl8225_write_phy_cck(dev, 0x48, 0x1c);
	rtl8225_write_phy_cck(dev, 0x49, 0x12);
	rtl8225_write_phy_cck(dev, 0x4a, 0x09);
	rtl8225_write_phy_cck(dev, 0x4b, 0x04);
	rtl8225_write_phy_cck(dev, 0x4c, 0x05);

	rtl818x_iowrite8(priv, (u8 *)0xFF5B, 0x0D); msleep(1);

	rtl8225z2_rf_set_tx_power(dev, 1);

	/* RX antenna default to A */
	rtl8225_write_phy_cck(dev, 0x10, 0x9b);			/* B: 0xDB */
	rtl8225_write_phy_ofdm(dev, 0x26, 0x90);		/* B: 0x10 */

	rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);	/* B: 0x00 */
	msleep(1);
	rtl818x_iowrite32(priv, (__le32 *)0xFF94, 0x3dc00002);
}

static void rtl8225z2_b_rf_init(struct ieee80211_hw *dev)
{
	struct rtl8187_priv *priv = dev->priv;
	int i;

	rtl8225_write(dev, 0x0, 0x0B7);
	rtl8225_write(dev, 0x1, 0xEE0);
	rtl8225_write(dev, 0x2, 0x44D);
	rtl8225_write(dev, 0x3, 0x441);
	rtl8225_write(dev, 0x4, 0x8C3);
	rtl8225_write(dev, 0x5, 0xC72);
	rtl8225_write(dev, 0x6, 0x0E6);
	rtl8225_write(dev, 0x7, 0x82A);
	rtl8225_write(dev, 0x8, 0x03F);
	rtl8225_write(dev, 0x9, 0x335);
	rtl8225_write(dev, 0xa, 0x9D4);
	rtl8225_write(dev, 0xb, 0x7BB);
	rtl8225_write(dev, 0xc, 0x850);
	rtl8225_write(dev, 0xd, 0xCDF);
	rtl8225_write(dev, 0xe, 0x02B);
	rtl8225_write(dev, 0xf, 0x114);

	rtl8225_write(dev, 0x0, 0x1B7);

	for (i = 0; i < ARRAY_SIZE(rtl8225z2_rxgain); i++) {
		rtl8225_write(dev, 0x1, i + 1);
		rtl8225_write(dev, 0x2, rtl8225z2_rxgain[i]);
	}

	rtl8225_write(dev, 0x3, 0x080);
	rtl8225_write(dev, 0x5, 0x004);
	rtl8225_write(dev, 0x0, 0x0B7);

	rtl8225_write(dev, 0x2, 0xC4D);

	rtl8225_write(dev, 0x2, 0x44D);
	rtl8225_write(dev, 0x0, 0x2BF);

	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_CCK, 0x03);
	rtl818x_iowrite8(priv, &priv->map->TX_GAIN_OFDM, 0x07);
	rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);

	rtl8225_write_phy_ofdm(dev, 0x80, 0x12);
	for (i = 0; i < ARRAY_SIZE(rtl8225z2_agc); i++) {
		rtl8225_write_phy_ofdm(dev, 0xF, rtl8225z2_agc[i]);
		rtl8225_write_phy_ofdm(dev, 0xE, 0x80 + i);
		rtl8225_write_phy_ofdm(dev, 0xE, 0);
	}
	rtl8225_write_phy_ofdm(dev, 0x80, 0x10);

	for (i = 0; i < ARRAY_SIZE(rtl8225z2_ofdm); i++)
		rtl8225_write_phy_ofdm(dev, i, rtl8225z2_ofdm[i]);

	rtl8225_write_phy_ofdm(dev, 0x97, 0x46);
	rtl8225_write_phy_ofdm(dev, 0xa4, 0xb6);
	rtl8225_write_phy_ofdm(dev, 0x85, 0xfc);
	rtl8225_write_phy_cck(dev, 0xc1, 0x88);
}

static void rtl8225_rf_stop(struct ieee80211_hw *dev)
{
	rtl8225_write(dev, 0x4, 0x1f);
}

static void rtl8225_rf_set_channel(struct ieee80211_hw *dev,
				   struct ieee80211_conf *conf)
{
	struct rtl8187_priv *priv = dev->priv;
	int chan = ieee80211_frequency_to_channel(conf->channel->center_freq);

	if (priv->rf->init == rtl8225_rf_init)
		rtl8225_rf_set_tx_power(dev, chan);
	else if (priv->rf->init == rtl8225z2_rf_init)
		rtl8225z2_rf_set_tx_power(dev, chan);
	else
		rtl8225z2_b_rf_set_tx_power(dev, chan);

	rtl8225_write(dev, 0x7, rtl8225_chan[chan - 1]);
	msleep(10);
}

static const struct rtl818x_rf_ops rtl8225_ops = {
	.name		= "rtl8225",
	.init		= rtl8225_rf_init,
	.stop		= rtl8225_rf_stop,
	.set_chan	= rtl8225_rf_set_channel
};

static const struct rtl818x_rf_ops rtl8225z2_ops = {
	.name		= "rtl8225z2",
	.init		= rtl8225z2_rf_init,
	.stop		= rtl8225_rf_stop,
	.set_chan	= rtl8225_rf_set_channel
};

static const struct rtl818x_rf_ops rtl8225z2_b_ops = {
	.name		= "rtl8225z2",
	.init		= rtl8225z2_b_rf_init,
	.stop		= rtl8225_rf_stop,
	.set_chan	= rtl8225_rf_set_channel
};

const struct rtl818x_rf_ops * rtl8187_detect_rf(struct ieee80211_hw *dev)
{
	u16 reg8, reg9;
	struct rtl8187_priv *priv = dev->priv;

	if (!priv->is_rtl8187b) {
		rtl8225_write(dev, 0, 0x1B7);

		reg8 = rtl8225_read(dev, 8);
		reg9 = rtl8225_read(dev, 9);

		rtl8225_write(dev, 0, 0x0B7);

		if (reg8 != 0x588 || reg9 != 0x700)
			return &rtl8225_ops;

		return &rtl8225z2_ops;
	} else
		return &rtl8225z2_b_ops;
}