Commit ddcd4c08 authored by Luis R. Rodriguez's avatar Luis R. Rodriguez Committed by John W. Linville
Browse files

ath9k_hw: make ath9k_phy_modify_rx_buffer() static 



To do this we reorder callers in order in which they are called.

Signed-off-by: default avatarLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent a7765828

drivers/net/wireless/ath/ath9k/phy.c

+126 −130
Original line number Diff line number Diff line
@@ -41,10 +41,6 @@ 


#include "hw.h"



static void ath9k_phy_modify_rx_buffer(u32 *rfBuf, u32 reg32,

				       u32 numBits, u32 firstBit,

				       u32 column);



/**

 * ath9k_hw_write_regs - ??

 *
@@ -433,6 +429,43 @@ void ath9k_hw_9280_spur_mitigate(struct ath_hw *ah, struct ath9k_channel *chan) 


/* All code below is for non single-chip solutions */



/**

 * ath9k_phy_modify_rx_buffer() - perform analog swizzling of parameters

 * @rfbuf:

 * @reg32:

 * @numBits:

 * @firstBit:

 * @column:

 *

 * Performs analog "swizzling" of parameters into their location.

 * Used on external AR2133/AR5133 radios.

 */

static void ath9k_phy_modify_rx_buffer(u32 *rfBuf, u32 reg32,

				       u32 numBits, u32 firstBit,

				       u32 column)

{

	u32 tmp32, mask, arrayEntry, lastBit;

	int32_t bitPosition, bitsLeft;



	tmp32 = ath9k_hw_reverse_bits(reg32, numBits);

	arrayEntry = (firstBit - 1) / 8;

	bitPosition = (firstBit - 1) % 8;

	bitsLeft = numBits;

	while (bitsLeft > 0) {

		lastBit = (bitPosition + bitsLeft > 8) ?

		    8 : bitPosition + bitsLeft;

		mask = (((1 << lastBit) - 1) ^ ((1 << bitPosition) - 1)) <<

		    (column * 8);

		rfBuf[arrayEntry] &= ~mask;

		rfBuf[arrayEntry] |= ((tmp32 << bitPosition) <<

				      (column * 8)) & mask;

		bitsLeft -= 8 - bitPosition;

		tmp32 = tmp32 >> (8 - bitPosition);

		bitPosition = 0;

		arrayEntry++;

	}

}



/*

 * Fix on 2.4 GHz band for orientation sensitivity issue by increasing

 * rf_pwd_icsyndiv.
@@ -494,6 +527,95 @@ static void ath9k_hw_force_bias(struct ath_hw *ah, u16 synth_freq) 
	REG_WRITE_RF_ARRAY(&ah->iniBank6, ah->analogBank6Data, reg_writes);

}



/**

 * ath9k_hw_decrease_chain_power()

 *

 * @ah: atheros hardware structure

 * @chan:

 *

 * Only used on the AR5416 and AR5418 with the external AR2133/AR5133 radios.

 *

 * Sets a chain internal RF path to the lowest output power. Any

 * further writes to bank6 after this setting will override these

 * changes. Thus this function must be the last function in the

 * sequence to modify bank 6.

 *

 * This function must be called after ar5416SetRfRegs() which is

 * called from ath9k_hw_process_ini() due to swizzling of bank 6.

 * Depends on ah->analogBank6Data being initialized by

 * ath9k_hw_set_rf_regs()

 *

 * Additional additive reduction in power -

 * change chain's switch table so chain's tx state is actually the rx

 * state value. May produce different results in 2GHz/5GHz as well as

 * board to board but in general should be a reduction.

 *

 * Activated by #ifdef ALTER_SWITCH.  Not tried yet.  If so, must be

 * called after ah->eep_ops->set_board_values() due to RMW of

 * PHY_SWITCH_CHAIN_0.

 */

void ath9k_hw_decrease_chain_power(struct ath_hw *ah,

				   struct ath9k_channel *chan)

{

	int i, regWrites = 0;

	u32 bank6SelMask;

	u32 *bank6Temp = ah->bank6Temp;



	BUG_ON(AR_SREV_9280_10_OR_LATER(ah));



	switch (ah->config.diversity_control) {

	case ATH9K_ANT_FIXED_A:

		bank6SelMask =

		    (ah->config.antenna_switch_swap & ANTSWAP_AB) ?

			REDUCE_CHAIN_0 : /* swapped, reduce chain 0 */

			REDUCE_CHAIN_1; /* normal, select chain 1/2 to reduce */

		break;

	case ATH9K_ANT_FIXED_B:

		bank6SelMask =

		    (ah->config.antenna_switch_swap & ANTSWAP_AB) ?

			REDUCE_CHAIN_1 : /* swapped, reduce chain 1/2 */

			REDUCE_CHAIN_0; /* normal, select chain 0 to reduce */

		break;

	case ATH9K_ANT_VARIABLE:

		return; /* do not change anything */

		break;

	default:

		return; /* do not change anything */

		break;

	}



	for (i = 0; i < ah->iniBank6.ia_rows; i++)

		bank6Temp[i] = ah->analogBank6Data[i];



	/* Write Bank 5 to switch Bank 6 write to selected chain only */

	REG_WRITE(ah, AR_PHY_BASE + 0xD8, bank6SelMask);



	/*

	 * Modify Bank6 selected chain to use lowest amplification.

	 * Modifies the parameters to a value of 1.

	 * Depends on existing bank 6 values to be cached in

	 * ah->analogBank6Data

	 */

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 189, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 190, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 191, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 192, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 193, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 222, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 245, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 246, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 247, 0);



	REG_WRITE_RF_ARRAY(&ah->iniBank6, bank6Temp, regWrites);



	REG_WRITE(ah, AR_PHY_BASE + 0xD8, 0x00000053);

#ifdef ALTER_SWITCH

	REG_WRITE(ah, PHY_SWITCH_CHAIN_0,

		  (REG_READ(ah, PHY_SWITCH_CHAIN_0) & ~0x38)

		  | ((REG_READ(ah, PHY_SWITCH_CHAIN_0) >> 3) & 0x38));

#endif

}



/**

 * ath9k_hw_set_channel - tune to a channel on the external AR2133/AR5133 radios

 * @ah: atheros hardware stucture
@@ -853,43 +975,6 @@ ath9k_hw_rf_free_ext_banks(struct ath_hw *ah) 
#undef ATH_FREE_BANK

}



/**

 * ath9k_phy_modify_rx_buffer() - perform analog swizzling of parameters

 * @rfbuf:

 * @reg32:

 * @numBits:

 * @firstBit:

 * @column:

 *

 * Performs analog "swizzling" of parameters into their location.

 * Used on external AR2133/AR5133 radios.

 */

static void ath9k_phy_modify_rx_buffer(u32 *rfBuf, u32 reg32,

				       u32 numBits, u32 firstBit,

				       u32 column)

{

	u32 tmp32, mask, arrayEntry, lastBit;

	int32_t bitPosition, bitsLeft;



	tmp32 = ath9k_hw_reverse_bits(reg32, numBits);

	arrayEntry = (firstBit - 1) / 8;

	bitPosition = (firstBit - 1) % 8;

	bitsLeft = numBits;

	while (bitsLeft > 0) {

		lastBit = (bitPosition + bitsLeft > 8) ?

		    8 : bitPosition + bitsLeft;

		mask = (((1 << lastBit) - 1) ^ ((1 << bitPosition) - 1)) <<

		    (column * 8);

		rfBuf[arrayEntry] &= ~mask;

		rfBuf[arrayEntry] |= ((tmp32 << bitPosition) <<

				      (column * 8)) & mask;

		bitsLeft -= 8 - bitPosition;

		tmp32 = tmp32 >> (8 - bitPosition);

		bitPosition = 0;

		arrayEntry++;

	}

}



/* *

 * ath9k_hw_set_rf_regs - programs rf registers based on EEPROM

 * @ah: atheros hardware structure
@@ -979,92 +1064,3 @@ bool ath9k_hw_set_rf_regs(struct ath_hw *ah, struct ath9k_channel *chan, 


	return true;

}
 


/**

 * ath9k_hw_decrease_chain_power()

 *

 * @ah: atheros hardware structure

 * @chan:

 *

 * Only used on the AR5416 and AR5418 with the external AR2133/AR5133 radios.

 *

 * Sets a chain internal RF path to the lowest output power. Any

 * further writes to bank6 after this setting will override these

 * changes. Thus this function must be the last function in the

 * sequence to modify bank 6.

 *

 * This function must be called after ar5416SetRfRegs() which is

 * called from ath9k_hw_process_ini() due to swizzling of bank 6.

 * Depends on ah->analogBank6Data being initialized by

 * ath9k_hw_set_rf_regs()

 *

 * Additional additive reduction in power -

 * change chain's switch table so chain's tx state is actually the rx

 * state value. May produce different results in 2GHz/5GHz as well as

 * board to board but in general should be a reduction.

 *

 * Activated by #ifdef ALTER_SWITCH.  Not tried yet.  If so, must be

 * called after ah->eep_ops->set_board_values() due to RMW of

 * PHY_SWITCH_CHAIN_0.

 */

void

ath9k_hw_decrease_chain_power(struct ath_hw *ah, struct ath9k_channel *chan)

{

	int i, regWrites = 0;

	u32 bank6SelMask;

	u32 *bank6Temp = ah->bank6Temp;



	BUG_ON(AR_SREV_9280_10_OR_LATER(ah));



	switch (ah->config.diversity_control) {

	case ATH9K_ANT_FIXED_A:

		bank6SelMask =

		    (ah->config.antenna_switch_swap & ANTSWAP_AB) ?

			REDUCE_CHAIN_0 : /* swapped, reduce chain 0 */

			REDUCE_CHAIN_1; /* normal, select chain 1/2 to reduce */

		break;

	case ATH9K_ANT_FIXED_B:

		bank6SelMask =

		    (ah->config.antenna_switch_swap & ANTSWAP_AB) ?

			REDUCE_CHAIN_1 : /* swapped, reduce chain 1/2 */

			REDUCE_CHAIN_0; /* normal, select chain 0 to reduce */

		break;

	case ATH9K_ANT_VARIABLE:

		return; /* do not change anything */

		break;

	default:

		return; /* do not change anything */

		break;

	}



	for (i = 0; i < ah->iniBank6.ia_rows; i++)

		bank6Temp[i] = ah->analogBank6Data[i];



	/* Write Bank 5 to switch Bank 6 write to selected chain only */

	REG_WRITE(ah, AR_PHY_BASE + 0xD8, bank6SelMask);



	/*

	 * Modify Bank6 selected chain to use lowest amplification.

	 * Modifies the parameters to a value of 1.

	 * Depends on existing bank 6 values to be cached in

	 * ah->analogBank6Data

	 */

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 189, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 190, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 191, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 192, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 193, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 222, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 245, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 246, 0);

	ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 247, 0);



	REG_WRITE_RF_ARRAY(&ah->iniBank6, bank6Temp, regWrites);



	REG_WRITE(ah, AR_PHY_BASE + 0xD8, 0x00000053);

#ifdef ALTER_SWITCH

	REG_WRITE(ah, PHY_SWITCH_CHAIN_0,

		  (REG_READ(ah, PHY_SWITCH_CHAIN_0) & ~0x38)

		  | ((REG_READ(ah, PHY_SWITCH_CHAIN_0) >> 3) & 0x38));

#endif

}

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