drivers/staging/rtl8821ae/rtl8821ae/pwrseqcmd.c

/******************************************************************************
 *
 * Copyright(c) 2009-2010  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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * 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 rtl_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 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(COMP_INIT, DBG_TRACE,
			("rtl_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(COMP_INIT, DBG_TRACE,
					("rtl_hal_pwrseqcmdparsing(): PWR_CMD_READ\n"));
				break;

			case PWR_CMD_WRITE: {
				RT_TRACE(COMP_INIT, DBG_TRACE,
					("rtl_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 = 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(COMP_INIT, DBG_TRACE,
					("rtl_hal_pwrseqcmdparsing(): PWR_CMD_POLLING\n"));
				polling_bit = false;
				offset = GET_PWR_CFG_OFFSET(pwr_cfg_cmd);

				do {
					value = rtl_read_byte(rtlpriv, offset);

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

					if (polling_count++ > max_polling_cnt) {
						return false;
					}
				} while (!polling_bit);

				break;

			case PWR_CMD_DELAY:
				RT_TRACE(COMP_INIT, DBG_TRACE,
					("rtl_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(COMP_INIT, DBG_TRACE,
					("rtl_hal_pwrseqcmdparsing(): PWR_CMD_END\n"));
				return true;
				break;

			default:
				RT_ASSERT(false,
					("rtl_hal_pwrseqcmdparsing(): Unknown CMD!!\n"));
				break;
			}

		}

		ary_idx++;
	} while (1);

	return true;
}