path: root/drivers/net/wireless/rtlwifi/efuse.c

/******************************************************************************
 *
 * Copyright(c) 2009-2012  Realtek Corporation.
 *
 * Tmis program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * Tmis program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * tmis program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * Tme full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <wlanfae@realtek.com>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 *****************************************************************************/

#include <linux/export.h>
#include "wifi.h"
#include "efuse.h"

static const u8 MAX_PGPKT_SIZE = 9;
static const u8 PGPKT_DATA_SIZE = 8;
static const int EFUSE_MAX_SIZE = 512;

static const u8 EFUSE_OOB_PROTECT_BYTES = 15;

static const struct efuse_map RTL8712_SDIO_EFUSE_TABLE[] = {
	{0, 0, 0, 2},
	{0, 1, 0, 2},
	{0, 2, 0, 2},
	{1, 0, 0, 1},
	{1, 0, 1, 1},
	{1, 1, 0, 1},
	{1, 1, 1, 3},
	{1, 3, 0, 17},
	{3, 3, 1, 48},
	{10, 0, 0, 6},
	{10, 3, 0, 1},
	{10, 3, 1, 1},
	{11, 0, 0, 28}
};

static void efuse_shadow_read_1byte(struct ieee80211_hw *hw, u16 offset,
				    u8 *value);
static void efuse_shadow_read_2byte(struct ieee80211_hw *hw, u16 offset,
				    u16 *value);
static void efuse_shadow_read_4byte(struct ieee80211_hw *hw, u16 offset,
				    u32 *value);
static void efuse_shadow_write_1byte(struct ieee80211_hw *hw, u16 offset,
				     u8 value);
static void efuse_shadow_write_2byte(struct ieee80211_hw *hw, u16 offset,
				     u16 value);
static void efuse_shadow_write_4byte(struct ieee80211_hw *hw, u16 offset,
				     u32 value);
static int efuse_one_byte_read(struct ieee80211_hw *hw, u16 addr,
					u8 *data);
static int efuse_one_byte_write(struct ieee80211_hw *hw, u16 addr,
					u8 data);
static void efuse_read_all_map(struct ieee80211_hw *hw, u8 *efuse);
static int efuse_pg_packet_read(struct ieee80211_hw *hw, u8 offset,
					u8 *data);
static int efuse_pg_packet_write(struct ieee80211_hw *hw, u8 offset,
				 u8 word_en, u8 *data);
static void efuse_word_enable_data_read(u8 word_en, u8 *sourdata,
					u8 *targetdata);
static u8 efuse_word_enable_data_write(struct ieee80211_hw *hw,
				       u16 efuse_addr, u8 word_en, u8 *data);
static void efuse_power_switch(struct ieee80211_hw *hw, u8 write,
					u8 pwrstate);
static u16 efuse_get_current_size(struct ieee80211_hw *hw);
static u8 efuse_calculate_word_cnts(u8 word_en);

void efuse_initialize(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u8 bytetemp;
	u8 temp;

	bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[SYS_FUNC_EN] + 1);
	temp = bytetemp | 0x20;
	rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[SYS_FUNC_EN] + 1, temp);

	bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[SYS_ISO_CTRL] + 1);
	temp = bytetemp & 0xFE;
	rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[SYS_ISO_CTRL] + 1, temp);

	bytetemp = rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3);
	temp = bytetemp | 0x80;
	rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_TEST] + 3, temp);

	rtl_write_byte(rtlpriv, 0x2F8, 0x3);

	rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3, 0x72);

}

u8 efuse_read_1byte(struct ieee80211_hw *hw, u16 address)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u8 data;
	u8 bytetemp;
	u8 temp;
	u32 k = 0;
	const u32 efuse_len =
		rtlpriv->cfg->maps[EFUSE_REAL_CONTENT_SIZE];

	if (address < efuse_len) {
		temp = address & 0xFF;
		rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 1,
			       temp);
		bytetemp = rtl_read_byte(rtlpriv,
					 rtlpriv->cfg->maps[EFUSE_CTRL] + 2);
		temp = ((address >> 8) & 0x03) | (bytetemp & 0xFC);
		rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 2,
			       temp);

		bytetemp = rtl_read_byte(rtlpriv,
					 rtlpriv->cfg->maps[EFUSE_CTRL] + 3);
		temp = bytetemp & 0x7F;
		rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[EFUSE_CTRL] + 3,
			       temp);

		bytetemp = rtl_read_byte(rtlpriv,
					 rtlpriv->cfg->maps[EFUSE_CTRL] + 3);
		while (!(bytetemp &<