linux_kernel/drivers/net/wireless/rtlwifi/rtl8723be/pwrseqcmd.c

/******************************************************************************
 *
 * Copyright(c) 2009-2014  Realtek Corporation.
 *
 * This 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.
 *
 * This 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.
 *
 * The 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 "pwrseq.h"

/*	Description:
 *		This routine deal with the Power Configuration CMDs
 *		 parsing for RTL8723/RTL8188E Series IC.
 *	Assumption:
 *		We should follow specific format which was released from HW SD.
 *
 *	2011.07.07, added by Roger.
 */
bool rtlbe_hal_pwrseqcmdparsing(struct rtl_priv *rtlpriv, u8 cut_version,
				 u8 fab_version, u8 interface_type,
				 struct wlan_pwr_cfg pwrcfgcmd[])

{
	struct wlan_pwr_cfg pwr_cfg_cmd = {0};
	bool b_polling_bit = false;
	u32 ary_idx = 0;
	u8 value = 0;
	u32 offset = 0;
	u32 polling_count = 0;
	u32 max_polling_cnt = 5000;

	do {
		pwr_cfg_cmd = pwrcfgcmd[ary_idx];
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			 "rtlbe_hal_pwrseqcmdparsing(): "
			 "offset(%#x),cut_msk(%#x), fab_msk(%#x),"
			 "interface_msk(%#x), base(%#x), "
			 "cmd(%#x), msk(%#x), value(%#x)\n",
			 GET_PWR_CFG_OFFSET(pwr_cfg_cmd),
			 GET_PWR_CFG_CUT_MASK(pwr_cfg_cmd),
			 GET_PWR_CFG_FAB_MASK(pwr_cfg_cmd),
			 GET_PWR_CFG_INTF_MASK(pwr_cfg_cmd),
			 GET_PWR_CFG_BASE(pwr_cfg_cmd),
			 GET_PWR_CFG_CMD(pwr_cfg_cmd),
			 GET_PWR_CFG_MASK(pwr_cfg_cmd),
			 GET_PWR_CFG_VALUE(pwr_cfg_cmd));

		if ((GET_PWR_CFG_FAB_MASK(pwr_cfg_cmd)&fab_version) &&
		    (GET_PWR_CFG_CUT_MASK(pwr_cfg_cmd)&cut_version) &&
		    (GET_PWR_CFG_INTF_MASK(pwr_cfg_cmd)&interface_type)) {
			switch (GET_PWR_CFG_CMD(pwr_cfg_cmd)) {
			case PWR_CMD_READ:
				RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
					 "rtlbe_hal_pwrseqcmdparsing(): "
					  "PWR_CMD_READ\n");
				break;
			case PWR_CMD_WRITE:
				RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
					 "rtlbe_hal_pwrseqcmdparsing(): "
					  "PWR_CMD_WRITE\n");
				offset = GET_PWR_CFG_OFFSET(pwr_cfg_cmd);

				/*Read the value from system register*/
				value = rtl_read_byte(rtlpriv, offset);
				value &= (~(GET_PWR_CFG_MASK(pwr_cfg_cmd)));
				value = value | (GET_PWR_CFG_VALUE(pwr_cfg_cmd)
					& GET_PWR_CFG_MASK(pwr_cfg_cmd));

				/*Write the value back to sytem register*/
				rtl_write_byte(rtlpriv, offset, value);
				break;
			case PWR_CMD_POLLING:
				RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
					 "rtlbe_hal_pwrseqcmdparsing(): "
					  "PWR_CMD_POLLING\n");
				b_polling_bit = false;
				offset = GET_PWR_CFG_OFFSET(pwr_cfg_cmd);

				do {
					value = rtl_read_byte(rtlpriv, offset);

					value &= GET_PWR_CFG_MASK(pwr_cfg_cmd);
					if (value ==
					    (GET_PWR_CFG_VALUE(pwr_cfg_cmd) &
					     GET_PWR_CFG_MASK(pwr_cfg_cmd)))
						b_polling_bit = true;
					else
						udelay(10);

					if (polling_count++ > max_polling_cnt)
						return false;

				} while (!b_polling_bit);
				break;
			case PWR_CMD_DELAY:
				RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
					 "rtlbe_hal_pwrseqcmdparsing(): "
					 "PWR_CMD_DELAY\n");
				if (GET_PWR_CFG_VALUE(pwr_cfg_cmd) ==
				    PWRSEQ_DELAY_US)
					udelay(GET_PWR_CFG_OFFSET(pwr_cfg_cmd));
				else
					mdelay(GET_PWR_CFG_OFFSET(pwr_cfg_cmd));
				break;
			case PWR_CMD_END:
				RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
					 "rtlbe_hal_pwrseqcmdparsing(): "
					 "PWR_CMD_END\n");
				return true;
				break;
			default:
				RT_ASSERT(false,
					  "rtlbe_hal_pwrseqcmdparsing(): "
					  "Unknown CMD!!\n");
				break;
			}
		}

		ary_idx++;
	} while (1);

	return true;
}