ath5k: Update RF Buffer handling

 * Use the new way to modify rf buffer and put some rf buffer
   documentation on rfbufer.h

 * Merge all rf regs functions to one

 * Sync with legacy HAL and Sam's HAL

 * Set gain_F settings so that gain_F optimization engine works
   on RF5111/RF5112 (note that both HALs only use step 0 for RF5111
   and they don't use gain_F optimization for this chip, code is
   there but is never used)

  Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath5k/ath5k.h

@@ -165,9 +165,6 @@
 #define AR5K_INI_VAL_XR			0
 #define AR5K_INI_VAL_MAX		5
 
-#define AR5K_RF5111_INI_RF_MAX_BANKS	AR5K_MAX_RF_BANKS
-#define AR5K_RF5112_INI_RF_MAX_BANKS	AR5K_MAX_RF_BANKS
-
 /* Used for BSSID etc manipulation */
 #define AR5K_LOW_ID(_a)(				\
 (_a)[0] | (_a)[1] << 8 | (_a)[2] << 16 | (_a)[3] << 24	\
@@ -342,6 +339,7 @@ struct ath5k_srev_name {
 
 #define AR5K_SREV_PHY_5211	0x30
 #define AR5K_SREV_PHY_5212	0x41
+#define	AR5K_SREV_PHY_5212A	0x42
 #define AR5K_SREV_PHY_2112B	0x43
 #define AR5K_SREV_PHY_2413	0x45
 #define AR5K_SREV_PHY_5413	0x61
@@ -1083,8 +1081,9 @@ struct ath5k_hw {
 	u32			ah_txq_isr;
 	u32			*ah_rf_banks;
 	size_t			ah_rf_banks_size;
+	size_t			ah_rf_regs_count;
 	struct ath5k_gain	ah_gain;
-	u32			ah_offset[AR5K_MAX_RF_BANKS];
+	u8			ah_offset[AR5K_MAX_RF_BANKS];
 
 	struct {
 		u16		txp_pcdac[AR5K_EEPROM_POWER_TABLE_SIZE];
@@ -1232,7 +1231,9 @@ extern int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);
 extern int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);
 
 /* Initialize RF */
-extern int ath5k_hw_rfregs(struct ath5k_hw *ah, struct ieee80211_channel *channel, unsigned int mode);
+extern int ath5k_hw_rfregs_init(struct ath5k_hw *ah,
+				struct ieee80211_channel *channel,
+				unsigned int mode);
 extern int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq);
 extern enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
 extern int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);

drivers/net/wireless/ath5k/phy.c

@@ -32,48 +32,80 @@
 /*
  * Used to modify RF Banks before writing them to AR5K_RF_BUFFER
  */
-static unsigned int ath5k_hw_rfregs_op(u32 *rf, u32 offset, u32 reg, u32 bits,
-		u32 first, u32 col, bool set)
+static unsigned int ath5k_hw_rfb_op(struct ath5k_hw *ah,
+					const struct ath5k_rf_reg *rf_regs,
+					u32 val, u8 reg_id, bool set)
 {
-	u32 mask, entry, last, data, shift, position;
-	s32 left;
+	const struct ath5k_rf_reg *rfreg = NULL;
+	u8 offset, bank, num_bits, col, position;
+	u16 entry;
+	u32 mask, data, last_bit, bits_shifted, first_bit;
+	u32 *rfb;
+	s32 bits_left;
 	int i;
 
 	data = 0;
+	rfb = ah->ah_rf_banks;
 
-	if (rf == NULL)
+	for (i = 0; i < ah->ah_rf_regs_count; i++) {
+		if (rf_regs[i].index == reg_id) {
+			rfreg = &rf_regs[i];
+			break;
+		}
+	}
+
+	if (rfb == NULL || rfreg == NULL) {
+		ATH5K_PRINTF("Rf register not found!\n");
 		/* should not happen */
 		return 0;
+	}
+
+	bank = rfreg->bank;
+	num_bits = rfreg->field.len;
+	first_bit = rfreg->field.pos;
+	col = rfreg->field.col;
+
+	/* first_bit is an offset from bank's
+	 * start. Since we have all banks on
+	 * the same array, we use this offset
+	 * to mark each bank's start */
+	offset = ah->ah_offset[bank];
 
-	if (!(col <= 3 && bits <= 32 && first + bits <= 319)) {
+	/* Boundary check */
+	if (!(col <= 3 && num_bits <= 32 && first_bit + num_bits <= 319)) {
 		ATH5K_PRINTF("invalid values at offset %u\n", offset);
 		return 0;
 	}
 
-	entry = ((first - 1) / 8) + offset;
-	position = (first - 1) % 8;
+	entry = ((first_bit - 1) / 8) + offset;
+	position = (first_bit - 1) % 8;
 
 	if (set)
-		data = ath5k_hw_bitswap(reg, bits);
+		data = ath5k_hw_bitswap(val, num_bits);
+
+	for (bits_shifted = 0, bits_left = num_bits; bits_left > 0;
+	position = 0, entry++) {
+
+		last_bit = (position + bits_left > 8) ? 8 :
+					position + bits_left;
 
-	for (i = shift = 0, left = bits; left > 0; position = 0, entry++, i++) {
-		last = (position + left > 8) ? 8 : position + left;
-		mask = (((1 << last) - 1) ^ ((1 << position) - 1)) << (col * 8);
+		mask = (((1 << last_bit) - 1) ^ ((1 << position) - 1)) <<
+								(col * 8);
 
 		if (set) {
-			rf[entry] &= ~mask;
-			rf[entry] |= ((data << position) << (col * 8)) & mask;
+			rfb[entry] &= ~mask;
+			rfb[entry] |= ((data << position) << (col * 8)) & mask;
 			data >>= (8 - position);
 		} else {
-			data = (((rf[entry] & mask) >> (col * 8)) >> position)
-				<< shift;
-			shift += last - position;
+			data |= (((rfb[entry] & mask) >> (col * 8)) >> position)
+				<< bits_shifted;
+			bits_shifted += last_bit - position;
 		}
 
-		left -= 8 - position;
+		bits_left -= 8 - position;
 	}
 
-	data = set ? 1 : ath5k_hw_bitswap(data, bits);
+	data = set ? 1 : ath5k_hw_bitswap(data, num_bits);
 
 	return data;
 }
@@ -167,6 +199,7 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
 	u32 *rf;
 	const struct ath5k_gain_opt *go;
 	const struct ath5k_gain_opt_step *g_step;
+	const struct ath5k_rf_reg *rf_regs;
 
 	/* Only RF5112 Rev. 2 supports it */
 	if ((ah->ah_radio != AR5K_RF5112) ||
@@ -174,6 +207,8 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
 		return 0;
 
 	go = &rfgain_opt_5112;
+	rf_regs = rf_regs_5112a;
+	ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112a);
 
 	g_step = &go->go_step[ah->ah_gain.g_step_idx];
 
@@ -184,11 +219,11 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
 	ah->ah_gain.g_f_corr = 0;
 
 	/* No VGA (Variable Gain Amplifier) override, skip */
-	if (ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 1, 36, 0, false) != 1)
+	if (ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_MIXVGA_OVR, false) != 1)
 		return 0;
 
 	/* Mix gain stepping */
-	step = ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 4, 32, 0, false);
+	step = ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_MIXGAIN_STEP, false);
 
 	/* Mix gain override */
 	mix = g_step->gos_param[0];
@@ -217,6 +252,7 @@ static u32 ath5k_hw_rf_gainf_corr(struct ath5k_hw *ah)
  * their detection window) so we must ignore it */
 static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
 {
+	const struct ath5k_rf_reg *rf_regs;
 	u32 step, mix_ovr, level[4];
 	u32 *rf;
 
@@ -226,8 +262,13 @@ static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
 	rf = ah->ah_rf_banks;
 
 	if (ah->ah_radio == AR5K_RF5111) {
-		step = ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 6, 37, 0,
-				false);
+
+		rf_regs = rf_regs_5111;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5111);
+
+		step = ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_RFGAIN_STEP,
+			false);
+
 		level[0] = 0;
 		level[1] = (step == 63) ? 50 : step + 4;
 		level[2] = (step != 63) ? 64 : level[0];
@@ -238,8 +279,13 @@ static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw *ah)
 		ah->ah_gain.g_low = level[0] +
 			(step == 63 ? AR5K_GAIN_DYN_ADJUST_LO_MARGIN : 0);
 	} else {
-		mix_ovr = ath5k_hw_rfregs_op(rf, ah->ah_offset[7], 0, 1, 36, 0,
-				false);
+
+		rf_regs = rf_regs_5112;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112);
+
+		mix_ovr = ath5k_hw_rfb_op(ah, rf_regs, 0, AR5K_RF_MIXVGA_OVR,
+			false);
+
 		level[0] = level[2] = 0;
 
 		if (mix_ovr == 1) {
@@ -451,341 +497,320 @@ int ath5k_hw_rfgain_init(struct ath5k_hw *ah, unsigned int freq)
 * RF Registers setup *
 \********************/
 
+
 /*
- * Read EEPROM Calibration data, modify RF Banks and Initialize RF5111
+ * Setup RF registers by writing rf buffer on hw
  */
-static int ath5k_hw_rf5111_rfregs(struct ath5k_hw *ah,
-		struct ieee80211_channel *channel, unsigned int mode)
+int ath5k_hw_rfregs_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
+		unsigned int mode)
 {
+	const struct ath5k_rf_reg *rf_regs;
+	const struct ath5k_ini_rfbuffer *ini_rfb;
+	const struct ath5k_gain_opt *go = NULL;
+	const struct ath5k_gain_opt_step *g_step;
 	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
-	u32 *rf;
-	const unsigned int rf_size = ARRAY_SIZE(rfb_5111);
-	unsigned int i;
-	int obdb = -1, bank = -1;
-	u32 ee_mode;
+	u8 ee_mode = 0;
+	u32 *rfb;
+	int i, obdb = -1, bank = -1;
 
-	AR5K_ASSERT_ENTRY(mode, AR5K_MODE_MAX);
+	switch (ah->ah_radio) {
+	case AR5K_RF5111:
+		rf_regs = rf_regs_5111;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5111);
+		ini_rfb = rfb_5111;
+		ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5111);
+		go = &rfgain_opt_5111;
+		break;
+	case AR5K_RF5112:
+		if (ah->ah_radio_5ghz_revision >= AR5K_SREV_RAD_5112A) {
+			rf_regs = rf_regs_5112a;
+			ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112a);
+			ini_rfb = rfb_5112a;
+			ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5112a);
+		} else {
+			rf_regs = rf_regs_5112;
+			ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5112);
+			ini_rfb = rfb_5112;
+			ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5112);
+		}
+		go = &rfgain_opt_5112;
+		break;
+	case AR5K_RF2413:
+		rf_regs = rf_regs_2413;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2413);
+		ini_rfb = rfb_2413;
+		ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2413);
+		break;
+	case AR5K_RF2316:
+		rf_regs = rf_regs_2316;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2316);
+		ini_rfb = rfb_2316;
+		ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2316);
+		break;
+	case AR5K_RF5413:
+		rf_regs = rf_regs_5413;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_5413);
+		ini_rfb = rfb_5413;
+		ah->ah_rf_banks_size = ARRAY_SIZE(rfb_5413);
+		break;
+	case AR5K_RF2317:
+		rf_regs = rf_regs_2425;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2425);
+		ini_rfb = rfb_2317;
+		ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2317);
+		break;
+	case AR5K_RF2425:
+		rf_regs = rf_regs_2425;
+		ah->ah_rf_regs_count = ARRAY_SIZE(rf_regs_2425);
+		if (ah->ah_mac_srev < AR5K_SREV_AR2417) {
+			ini_rfb = rfb_2425;
+			ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2425);
+		} else {
+			ini_rfb = rfb_2417;
+			ah->ah_rf_banks_size = ARRAY_SIZE(rfb_2417);
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
 
-	rf = ah->ah_rf_banks;
+	/* If it's the first time we set rf buffer, allocate
+	 * ah->ah_rf_banks based on ah->ah_rf_banks_size
+	 * we set above */
+	if (ah->ah_rf_banks == NULL) {
+		ah->ah_rf_banks = kmalloc(sizeof(u32) * ah->ah_rf_banks_size,
+								GFP_KERNEL);
+		if (ah->ah_rf_banks == NULL) {
+			ATH5K_ERR(ah->ah_sc, "out of memory\n");
+			return -ENOMEM;
+		}
+	}
 
 	/* Copy values to modify them */
-	for (i = 0; i < rf_size; i++) {
-		if (rfb_5111[i].rfb_bank >= AR5K_RF5111_INI_RF_MAX_BANKS) {
+	rfb = ah->ah_rf_banks;
+
+	for (i = 0; i < ah->ah_rf_banks_size; i++) {
+		if (ini_rfb[i].rfb_bank >= AR5K_MAX_RF_BANKS) {
 			ATH5K_ERR(ah->ah_sc, "invalid bank\n");
 			return -EINVAL;
 		}
 
-		if (bank != rfb_5111[i].rfb_bank) {
-			bank = rfb_5111[i].rfb_bank;
+		/* Bank changed, write down the offset */
+		if (bank != ini_rfb[i].rfb_bank) {
+			bank = ini_rfb[i].rfb_bank;
 			ah->ah_offset[bank] = i;
 		}
 
-		rf[i] = rfb_5111[i].rfb_mode_data[mode];
+		rfb[i] = ini_rfb[i].rfb_mode_data[mode];
 	}
 
-	/* Modify bank 0 */
+	/* Set Output and Driver bias current (OB/DB) */
 	if (channel->hw_value & CHANNEL_2GHZ) {
+
 		if (channel->hw_value & CHANNEL_CCK)
 			ee_mode = AR5K_EEPROM_MODE_11B;
 		else
 			ee_mode = AR5K_EEPROM_MODE_11G;
-		obdb = 0;
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[0],
-				ee->ee_ob[ee_mode][obdb], 3, 119, 0, true))
-			return -EINVAL;
+		/* For RF511X/RF211X combination we
+		 * use b_OB and b_DB parameters stored
+		 * in eeprom on ee->ee_ob[ee_mode][0]
+		 *
+		 * For all other chips we use OB/DB for 2Ghz
+		 * stored in the b/g modal section just like
+		 * 802.11a on ee->ee_ob[ee_mode][1] */
+		if ((ah->ah_radio == AR5K_RF5111) ||
+		(ah->ah_radio == AR5K_RF5112))
+			obdb = 0;
+		else
+			obdb = 1;
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[0],
-				ee->ee_ob[ee_mode][obdb], 3, 122, 0, true))
-			return -EINVAL;
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_ob[ee_mode][obdb],
+						AR5K_RF_OB_2GHZ, true);
 
-		obdb = 1;
-	/* Modify bank 6 */
-	} else {
-		/* For 11a, Turbo and XR */
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_db[ee_mode][obdb],
+						AR5K_RF_DB_2GHZ, true);
+
+	/* RF5111 always needs OB/DB for 5GHz, even if we use 2GHz */
+	} else if ((channel->hw_value & CHANNEL_5GHZ) ||
+			(ah->ah_radio == AR5K_RF5111)) {
+
+		/* For 11a, Turbo and XR we need to choose
+		 * OB/DB based on frequency range */
 		ee_mode = AR5K_EEPROM_MODE_11A;
 		obdb =	 channel->center_freq >= 5725 ? 3 :
 			(channel->center_freq >= 5500 ? 2 :
 			(channel->center_freq >= 5260 ? 1 :
 			 (channel->center_freq > 4000 ? 0 : -1)));
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-				ee->ee_pwd_84, 1, 51, 3, true))
+		if (obdb < 0)
 			return -EINVAL;
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-				ee->ee_pwd_90, 1, 45, 3, true))
-			return -EINVAL;
-	}
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_ob[ee_mode][obdb],
+						AR5K_RF_OB_5GHZ, true);
 
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-			!ee->ee_xpd[ee_mode], 1, 95, 0, true))
-		return -EINVAL;
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_db[ee_mode][obdb],
+						AR5K_RF_DB_5GHZ, true);
+	}
 
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-			ee->ee_x_gain[ee_mode], 4, 96, 0, true))
-		return -EINVAL;
+	g_step = &go->go_step[ah->ah_gain.g_step_idx];
 
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6], obdb >= 0 ?
-			ee->ee_ob[ee_mode][obdb] : 0, 3, 104, 0, true))
-		return -EINVAL;
+	/* Bank Modifications (chip-specific) */
+	if (ah->ah_radio == AR5K_RF5111) {
 
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6], obdb >= 0 ?
-			ee->ee_db[ee_mode][obdb] : 0, 3, 107, 0, true))
-		return -EINVAL;
+		/* Set gain_F settings according to current step */
+		if (channel->hw_value & CHANNEL_OFDM) {
 
-	/* Modify bank 7 */
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[7],
-			ee->ee_i_gain[ee_mode], 6, 29, 0, true))
-		return -EINVAL;
+			AR5K_REG_WRITE_BITS(ah, AR5K_PHY_FRAME_CTL,
+					AR5K_PHY_FRAME_CTL_TX_CLIP,
+					g_step->gos_param[0]);
 
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[7],
-			ee->ee_xpd[ee_mode], 1, 4, 0, true))
-		return -EINVAL;
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[1],
+							AR5K_RF_PWD_90, true);
 
-	/* Write RF values */
-	for (i = 0; i < rf_size; i++) {
-		AR5K_REG_WAIT(i);
-		ath5k_hw_reg_write(ah, rf[i], rfb_5111[i].rfb_ctrl_register);
-	}
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[2],
+							AR5K_RF_PWD_84, true);
 
-	ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[3],
+						AR5K_RF_RFGAIN_SEL, true);
 
-	return 0;
-}
+			/* We programmed gain_F parameters, switch back
+			 * to active state */
+			ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
 
-/*
- * Read EEPROM Calibration data, modify RF Banks and Initialize RF5112
- */
-static int ath5k_hw_rf5112_rfregs(struct ath5k_hw *ah,
-		struct ieee80211_channel *channel, unsigned int mode)
-{
-	const struct ath5k_ini_rfbuffer *rf_ini;
-	struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
-	u32 *rf;
-	unsigned int rf_size, i;
-	int obdb = -1, bank = -1;
-	u32 ee_mode;
+		}
 
-	AR5K_ASSERT_ENTRY(mode, AR5K_MODE_MAX);
+		/* Bank 6/7 setup */
 
-	rf = ah->ah_rf_banks;
+		ath5k_hw_rfb_op(ah, rf_regs, !ee->ee_xpd[ee_mode],
+						AR5K_RF_PWD_XPD, true);
 
-	if (ah->ah_radio_5ghz_revision >= AR5K_SREV_RAD_5112A) {
-		rf_ini = rfb_5112a;
-		rf_size = ARRAY_SIZE(rfb_5112a);
-	} else {
-		rf_ini = rfb_5112;
-		rf_size = ARRAY_SIZE(rfb_5112);
-	}
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_x_gain[ee_mode],
+						AR5K_RF_XPD_GAIN, true);
 
-	/* Copy values to modify them */
-	for (i = 0; i < rf_size; i++) {
-		if (rf_ini[i].rfb_bank >= AR5K_RF5112_INI_RF_MAX_BANKS) {
-			ATH5K_ERR(ah->ah_sc, "invalid bank\n");
-			return -EINVAL;
-		}
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_i_gain[ee_mode],
+						AR5K_RF_GAIN_I, true);
 
-		if (bank != rf_ini[i].rfb_bank) {
-			bank = rf_ini[i].rfb_bank;
-			ah->ah_offset[bank] = i;
-		}
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_xpd[ee_mode],
+						AR5K_RF_PLO_SEL, true);
 
-		rf[i] = rf_ini[i].rfb_mode_data[mode];
+		/* TODO: Half/quarter channel support */
 	}
 
-	/* Modify bank 6 */
-	if (channel->hw_value & CHANNEL_2GHZ) {
-		if (channel->hw_value & CHANNEL_OFDM)
-			ee_mode = AR5K_EEPROM_MODE_11G;
-		else
-			ee_mode = AR5K_EEPROM_MODE_11B;
-		obdb = 0;
+	if (ah->ah_radio == AR5K_RF5112) {
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-				ee->ee_ob[ee_mode][obdb], 3, 287, 0, true))
-			return -EINVAL;
+		/* Set gain_F settings according to current step */
+		if (channel->hw_value & CHANNEL_OFDM) {
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-				ee->ee_ob[ee_mode][obdb], 3, 290, 0, true))
-			return -EINVAL;
-	} else {
-		/* For 11a, Turbo and XR */
-		ee_mode = AR5K_EEPROM_MODE_11A;
-		obdb = channel->center_freq >= 5725 ? 3 :
-		    (channel->center_freq >= 5500 ? 2 :
-			(channel->center_freq >= 5260 ? 1 :
-			    (channel->center_freq > 4000 ? 0 : -1)));
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[0],
+						AR5K_RF_MIXGAIN_OVR, true);
 
-		if (obdb == -1)
-			return -EINVAL;
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[1],
+						AR5K_RF_PWD_138, true);
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-				ee->ee_ob[ee_mode][obdb], 3, 279, 0, true))
-			return -EINVAL;
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[2],
+						AR5K_RF_PWD_137, true);
 
-		if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-				ee->ee_ob[ee_mode][obdb], 3, 282, 0, true))
-			return -EINVAL;
-	}
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[3],
+						AR5K_RF_PWD_136, true);
 
-	ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-	    ee->ee_x_gain[ee_mode], 2, 270, 0, true);
-	ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-	    ee->ee_x_gain[ee_mode], 2, 257, 0, true);
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[4],
+						AR5K_RF_PWD_132, true);
 
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
-			ee->ee_xpd[ee_mode], 1, 302, 0, true))
-		return -EINVAL;
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[5],
+						AR5K_RF_PWD_131, true);
 
-	/* Modify bank 7 */
-	if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[7],
-			ee->ee_i_gain[ee_mode], 6, 14, 0, true))
-		return -EINVAL;
+			ath5k_hw_rfb_op(ah, rf_regs, g_step->gos_param[6],
+						AR5K_RF_PWD_130, true);
 
-	/* Write RF values */
-	for (i = 0; i < rf_size; i++)
-		ath5k_hw_reg_write(ah, rf[i], rf_ini[i].rfb_ctrl_register);
+			/* We programmed gain_F parameters, switch back
+			 * to active state */
+			ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
+		}
 
+		/* Bank 6/7 setup */
 
-	ah->ah_gain.g_state = AR5K_RFGAIN_ACTIVE;
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_xpd[ee_mode],
+						AR5K_RF_XPD_SEL, true);
 
-	return 0;
-}
+		if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112A) {
+			/* Rev. 1 supports only one xpd */
+			ath5k_hw_rfb_op(ah, rf_regs,
+						ee->ee_x_gain[ee_mode],
+						AR5K_RF_XPD_GAIN, true);
 
-/*
- * Initialize RF5413/5414 and future chips
- * (until we come up with a better solution)
- */
-static int ath5k_hw_rf5413_rfregs(struct ath5k_hw *ah,
-		struct ieee80211_channel *channel, unsigned int mode)
-{
-	const struct ath5k_ini_rfbuffer *rf_ini;
-	u32 *rf;
-	unsigned int rf_size, i;
-	int bank = -1;
+		} else {
+			/* TODO: Set high and low gain bits */
+			ath5k_hw_rfb_op(ah, rf_regs,
+						ee->ee_x_gain[ee_mode],
+						AR5K_RF_PD_GAIN_LO, true);
+			ath5k_hw_rfb_op(ah, rf_regs,
+						ee->ee_x_gain[ee_mode],
+						AR5K_RF_PD_GAIN_HI, true);
 
-	AR5K_ASSERT_ENTRY(mode, AR5K_MODE_MAX);
+			/* Lower synth voltage on Rev 2 */
+			ath5k_hw_rfb_op(ah, rf_regs, 2,
+					AR5K_RF_HIGH_VC_CP, true);
 
-	rf = ah->ah_rf_banks;
+			ath5k_hw_rfb_op(ah, rf_regs, 2,
+					AR5K_RF_MID_VC_CP, true);
 
-	switch (ah->ah_radio) {
-	case AR5K_RF5413:
-		rf_ini = rfb_5413;
-		rf_size = ARRAY_SIZE(rfb_5413);
-		break;
-	case AR5K_RF2413:
-		rf_ini = rfb_2413;
-		rf_size = ARRAY_SIZE(rfb_2413);
+			ath5k_hw_rfb_op(ah, rf_regs, 2,
+					AR5K_RF_LOW_VC_CP, true);
 
-		if (mode < 2) {
-			ATH5K_ERR(ah->ah_sc,
-				"invalid channel mode: %i\n", mode);
-			return -EINVAL;
-		}
+			ath5k_hw_rfb_op(ah, rf_regs, 2,
+					AR5K_RF_PUSH_UP, true);
 
-		break;
-	case AR5K_RF2425:
-		rf_ini = rfb_2425;
-		rf_size = ARRAY_SIZE(rfb_2425);
+			/* Decrease power consumption on 5213+ BaseBand */
+			if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {
+				ath5k_hw_rfb_op(ah, rf_regs, 1,
+						AR5K_RF_PAD2GND, true);
 
-		if (mode < 2) {
-			ATH5K_ERR(ah->ah_sc,
-				"invalid channel mode: %i\n", mode);
-			return -EINVAL;
-		}
+				ath5k_hw_rfb_op(ah, rf_regs, 1,
+						AR5K_RF_XB2_LVL, true);
 
-		break;
-	default:
-		return -EINVAL;
-	}
+				ath5k_hw_rfb_op(ah, rf_regs, 1,
+						AR5K_RF_XB5_LVL, true);
 
-	/* Copy values to modify them */
-	for (i = 0; i < rf_size; i++) {
-		if (rf_ini[i].rfb_bank >= AR5K_RF5112_INI_RF_MAX_BANKS) {
-			ATH5K_ERR(ah->ah_sc, "invalid bank\n");
-			return -EINVAL;
-		}
+				ath5k_hw_rfb_op(ah, rf_regs, 1,
+						AR5K_RF_PWD_167, true);
 
-		if (bank != rf_ini[i].rfb_bank) {
-			bank = rf_ini[i].rfb_bank;
-			ah->ah_offset[bank] = i;
+				ath5k_hw_rfb_op(ah, rf_regs, 1,
+						AR5K_RF_PWD_166, true);
+			}
 		}
 
-		rf[i] = rf_ini[i].rfb_mode_data[mode];
-	}
+		ath5k_hw_rfb_op(ah, rf_regs, ee->ee_i_gain[ee_mode],
+						AR5K_RF_GAIN_I, true);
 
-	/*
-	 * After compairing dumps from different cards
-	 * we get the same RF_BUFFER settings (diff returns
-	 * 0 lines). It seems that RF_BUFFER settings are static
-	 * and are written unmodified (no EEPROM stuff
-	 * is used because calibration data would be
-	 * different between different cards and would result
-	 * different RF_BUFFER settings)
-	 */
+		/* TODO: Half/quarter channel support */
 
-	/* Write RF values */
-	for (i = 0; i < rf_size; i++)
-		ath5k_hw_reg_write(ah, rf[i], rf_ini[i].rfb_ctrl_register);
+	}
 
-	return 0;
-}
+	if (ah->ah_radio == AR5K_RF5413 &&
+	channel->hw_value & CHANNEL_2GHZ) {
 
-/*
- * Initialize RF
- */
-int ath5k_hw_rfregs(struct ath5k_hw *ah, struct ieee80211_channel *channel,
-		unsigned int mode)
-{
-	int (*func)(struct ath5k_hw *, struct ieee80211_channel *, unsigned int);
-	int ret;
+		ath5k_hw_rfb_op(ah, rf_regs, 1, AR5K_RF_DERBY_CHAN_SEL_MODE,
+									true);
 
-	switch (ah->ah_radio) {
-	case AR5K_RF5111:
-		ah->ah_rf_banks_size = sizeof(rfb_5111);
-		func = ath5k_hw_rf5111_rfregs;
-		break;
-	case AR5K_RF5112:
-		if (ah->ah_radio_5ghz_revision >= AR5K_SREV_RAD_5112A)
-			ah->ah_rf_banks_size = sizeof(rfb_5112a);
-		else
-			ah->ah_rf_banks_size = sizeof(rfb_5112);
-		func = ath5k_hw_rf5112_rfregs;
-		break;
-	case AR5K_RF5413:
-		ah->ah_rf_banks_size = sizeof(rfb_5413);
-		func = ath5k_hw_rf5413_rfregs;
-		break;
-	case AR5K_RF2413:
-		ah->ah_rf_banks_size = sizeof(rfb_2413);
-		func = ath5k_hw_rf5413_rfregs;
-		break;
-	case AR5K_RF2425:
-		ah->ah_rf_banks_size = sizeof(rfb_2425);
-		func = ath5k_hw_rf5413_rfregs;
-		break;
-	default:
-		return -EINVAL;
-	}
+		/* Set optimum value for early revisions (on pci-e chips) */
+		if (ah->ah_mac_srev >= AR5K_SREV_AR5424 &&
+		ah->ah_mac_srev < AR5K_SREV_AR5413)
+			ath5k_hw_rfb_op(ah, rf_regs, ath5k_hw_bitswap(6, 3),
+						AR5K_RF_PWD_ICLOBUF_2G, true);
 
-	if (ah->ah_rf_banks == NULL) {
-		/* XXX do extra checks? */
-		ah->ah_rf_banks = kmalloc(ah->ah_rf_banks_size, GFP_KERNEL);
-		if (ah->ah_rf_banks == NULL) {
-			ATH5K_ERR(ah->ah_sc, "out of memory\n");
-			return -ENOMEM;
-		}
 	}
 
-	ret = func(ah, channel, mode);
+	/* Write RF banks on hw */
+	for (i = 0; i < ah->ah_rf_banks_size; i++) {
+		AR5K_REG_WAIT(i);
+		ath5k_hw_reg_write(ah, rfb[i], ini_rfb[i].rfb_ctrl_register);
+	}
 
-	return ret;
+	return 0;
 }
 
 
-
-
 /**************************\
   PHY/RF channel functions
 \**************************/

drivers/net/wireless/ath5k/reg.h

@@ -2101,34 +2101,10 @@
 /*
  * RF Buffer register
  *
- * There are some special control registers on the RF chip
- * that hold various operation settings related mostly to
- * the analog parts (channel, gain adjustment etc).
- *
- * We don't write on those registers directly but
- * we send a data packet on the buffer register and
- * then write on another special register to notify hw
- * to apply the settings. This is done so that control registers
- * can be dynamicaly programmed during operation and the settings
- * are applied faster on the hw.
- *
- * We sent such data packets during rf initialization and channel change
- * through ath5k_hw_rf*_rfregs and ath5k_hw_rf*_channel functions.
- *
- * The data packets we send during initializadion are inside ath5k_ini_rf
- * struct (see ath5k_hw.h) and each one is related to an "rf register bank".
- * We use *rfregs functions to modify them  acording to current operation
- * mode and eeprom values and pass them all together to the chip.
- *
  * It's obvious from the code that 0x989c is the buffer register but
  * for the other special registers that we write to after sending each
  * packet, i have no idea. So i'll name them BUFFER_CONTROL_X registers
  * for now. It's interesting that they are also used for some other operations.
- *
- * Also check out hw.h and U.S. Patent 6677779 B1 (about buffer
- * registers and control registers):
- *
- * http://www.google.com/patents?id=qNURAAAAEBAJ
  */
 
 #define AR5K_RF_BUFFER			0x989c

drivers/net/wireless/ath5k/reset.c

@@ -600,7 +600,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
 		/*
 		 * Write RF registers
 		 */
-		ret = ath5k_hw_rfregs(ah, channel, mode);
+		ret = ath5k_hw_rfregs_init(ah, channel, mode);
 		if (ret)
 			return ret;
 

drivers/net/wireless/ath5k/rfbuffer.h

@@ -17,6 +17,33 @@
  *
  */
 
+
+/*
+ * There are some special registers on the RF chip
+ * that control various operation settings related mostly to
+ * the analog parts (channel, gain adjustment etc).
+ *
+ * We don't write on those registers directly but
+ * we send a data packet on the chip, using a special register,
+ * that holds all the settings we need. After we 've sent the
+ * data packet, we write on another special register to notify hw
+ * to apply the settings. This is done so that control registers
+ * can be dynamicaly programmed during operation and the settings
+ * are applied faster on the hw.
+ *
+ * We call each data packet an "RF Bank" and all the data we write
+ * (all RF Banks) "RF Buffer". This file holds initial RF Buffer
+ * data for the different RF chips, and various info to match RF
+ * Buffer offsets with specific RF registers so that we can access
+ * them. We tweak these settings on rfregs_init function.
+ *
+ * Also check out reg.h and U.S. Patent 6677779 B1 (about buffer
+ * registers and control registers):
+ *
+ * http://www.google.com/patents?id=qNURAAAAEBAJ
+ */
+
+
 /*
  * Struct to hold default mode specific RF
  * register values (RF Banks)
@@ -72,15 +99,28 @@ enum ath5k_rf_regs_idx {
 	AR5K_RF_XB2_LVL,
 	AR5K_RF_XB5_LVL,
 	AR5K_RF_PWD_ICLOBUF_2G,
+	AR5K_RF_PWD_84,
+	AR5K_RF_PWD_90,
+	AR5K_RF_PWD_130,
+	AR5K_RF_PWD_131,
+	AR5K_RF_PWD_132,
+	AR5K_RF_PWD_136,
+	AR5K_RF_PWD_137,
+	AR5K_RF_PWD_138,
+	AR5K_RF_PWD_166,
+	AR5K_RF_PWD_167,
 	AR5K_RF_DERBY_CHAN_SEL_MODE,
 	/* BANK 7 */
 	AR5K_RF_GAIN_I,
 	AR5K_RF_PLO_SEL,
 	AR5K_RF_RFGAIN_SEL,
+	AR5K_RF_RFGAIN_STEP,
 	AR5K_RF_WAIT_S,
 	AR5K_RF_WAIT_I,
 	AR5K_RF_MAX_TIME,
+	AR5K_RF_MIXVGA_OVR,
 	AR5K_RF_MIXGAIN_OVR,
+	AR5K_RF_MIXGAIN_STEP,
 	AR5K_RF_PD_DELAY_A,
 	AR5K_RF_PD_DELAY_B,
 	AR5K_RF_PD_DELAY_XR,
@@ -118,19 +158,21 @@ enum ath5k_rf_regs_idx {
 #define	AR5K_RF5111_MAX_TIME		{ 2, 49,  0 }
 
 static const struct ath5k_rf_reg rf_regs_5111[] = {
-	{6, AR5K_RF_OB_2GHZ,	AR5K_RF5111_OB_2GHZ},
-	{6, AR5K_RF_DB_2GHZ,	AR5K_RF5111_DB_2GHZ},
-	{6, AR5K_RF_OB_5GHZ,	AR5K_RF5111_OB_5GHZ},
-	{6, AR5K_RF_DB_5GHZ,	AR5K_RF5111_DB_5GHZ},
-	{6, AR5K_RF_PWD_XPD,	AR5K_RF5111_PWD_XPD},
-	{6, AR5K_RF_XPD_GAIN,	AR5K_RF5111_XPD_GAIN},
-	{7, AR5K_RF_GAIN_I,	AR5K_RF5111_GAIN_I},
-	{7, AR5K_RF_PLO_SEL,	AR5K_RF5111_PLO_SEL},
-	{7, AR5K_RF_RFGAIN_SEL,	AR5K_RF5111_RFGAIN_SEL},
-	{7, AR5K_RF_WAIT_S,	AR5K_RF5111_WAIT_S},
-	{7, AR5K_RF_WAIT_I,	AR5K_RF5111_WAIT_I},
-	{7, AR5K_RF_MAX_TIME,	AR5K_RF5111_MAX_TIME}
-
+	{6, AR5K_RF_OB_2GHZ,		AR5K_RF5111_OB_2GHZ},
+	{6, AR5K_RF_DB_2GHZ,		AR5K_RF5111_DB_2GHZ},
+	{6, AR5K_RF_OB_5GHZ,		AR5K_RF5111_OB_5GHZ},
+	{6, AR5K_RF_DB_5GHZ,		AR5K_RF5111_DB_5GHZ},
+	{6, AR5K_RF_PWD_XPD,		AR5K_RF5111_PWD_XPD},
+	{6, AR5K_RF_XPD_GAIN,		AR5K_RF5111_XPD_GAIN},
+	{6, AR5K_RF_PWD_84,		AR5K_RF5111_PWD(84)},
+	{6, AR5K_RF_PWD_90,		AR5K_RF5111_PWD(90)},
+	{7, AR5K_RF_GAIN_I,		AR5K_RF5111_GAIN_I},
+	{7, AR5K_RF_PLO_SEL,		AR5K_RF5111_PLO_SEL},
+	{7, AR5K_RF_RFGAIN_SEL,		AR5K_RF5111_RFGAIN_SEL},
+	{7, AR5K_RF_RFGAIN_STEP,	AR5K_RF5111_RFGAIN_STEP},
+	{7, AR5K_RF_WAIT_S,		AR5K_RF5111_WAIT_S},
+	{7, AR5K_RF_WAIT_I,		AR5K_RF5111_WAIT_I},
+	{7, AR5K_RF_MAX_TIME,		AR5K_RF5111_MAX_TIME}
 };
 
 /* Default mode specific settings */
@@ -273,8 +315,16 @@ static const struct ath5k_rf_reg rf_regs_5112[] = {
 	{6, AR5K_RF_FIXED_BIAS_B,	AR5K_RF5112_FIXED_BIAS_B},
 	{6, AR5K_RF_XPD_SEL,		AR5K_RF5112_XPD_SEL},
 	{6, AR5K_RF_XPD_GAIN,		AR5K_RF5112_XPD_GAIN},
+	{6, AR5K_RF_PWD_130,		AR5K_RF5112_PWD(130)},
+	{6, AR5K_RF_PWD_131,		AR5K_RF5112_PWD(131)},
+	{6, AR5K_RF_PWD_132,		AR5K_RF5112_PWD(132)},
+	{6, AR5K_RF_PWD_136,		AR5K_RF5112_PWD(136)},
+	{6, AR5K_RF_PWD_137,		AR5K_RF5112_PWD(137)},
+	{6, AR5K_RF_PWD_138,		AR5K_RF5112_PWD(138)},
 	{7, AR5K_RF_GAIN_I,		AR5K_RF5112X_GAIN_I},
+	{7, AR5K_RF_MIXVGA_OVR,		AR5K_RF5112X_MIXVGA_OVR},
 	{7, AR5K_RF_MIXGAIN_OVR,	AR5K_RF5112X_MIXGAIN_OVR},
+	{7, AR5K_RF_MIXGAIN_STEP,	AR5K_RF5112X_MIXGAIN_STEP},
 	{7, AR5K_RF_PD_DELAY_A,		AR5K_RF5112X_PD_DELAY_A},
 	{7, AR5K_RF_PD_DELAY_B,		AR5K_RF5112X_PD_DELAY_B},
 	{7, AR5K_RF_PD_DELAY_XR,	AR5K_RF5112X_PD_DELAY_XR},
@@ -419,7 +469,7 @@ static const struct ath5k_ini_rfbuffer rfb_5112[] = {
 #define	AR5K_RF5112A_HIGH_VC_CP		{ 2, 90,  2 }
 #define	AR5K_RF5112A_MID_VC_CP		{ 2, 92,  2 }
 #define	AR5K_RF5112A_LOW_VC_CP		{ 2, 94,  2 }
-#define	AR5K_RF5112A_PUSH_UP		{ 2, 94,  2 }
+#define	AR5K_RF5112A_PUSH_UP		{ 1, 254,  2 }
 
 /* Power consumption */
 #define	AR5K_RF5112A_PAD2GND		{ 1, 281, 1 }
@@ -436,6 +486,14 @@ static const struct ath5k_rf_reg rf_regs_5112a[] = {
 	{6, AR5K_RF_XPD_SEL,		AR5K_RF5112A_XPD_SEL},
 	{6, AR5K_RF_PD_GAIN_LO,		AR5K_RF5112A_PDGAINLO},
 	{6, AR5K_RF_PD_GAIN_HI,		AR5K_RF5112A_PDGAINHI},
+	{6, AR5K_RF_PWD_130,		AR5K_RF5112A_PWD(130)},
+	{6, AR5K_RF_PWD_131,		AR5K_RF5112A_PWD(131)},
+	{6, AR5K_RF_PWD_132,		AR5K_RF5112A_PWD(132)},
+	{6, AR5K_RF_PWD_136,		AR5K_RF5112A_PWD(136)},
+	{6, AR5K_RF_PWD_137,		AR5K_RF5112A_PWD(137)},
+	{6, AR5K_RF_PWD_138,		AR5K_RF5112A_PWD(138)},
+	{6, AR5K_RF_PWD_166,		AR5K_RF5112A_PWD(166)},
+	{6, AR5K_RF_PWD_167,		AR5K_RF5112A_PWD(167)},
 	{6, AR5K_RF_HIGH_VC_CP,		AR5K_RF5112A_HIGH_VC_CP},
 	{6, AR5K_RF_MID_VC_CP,		AR5K_RF5112A_MID_VC_CP},
 	{6, AR5K_RF_LOW_VC_CP,		AR5K_RF5112A_LOW_VC_CP},
@@ -444,7 +502,9 @@ static const struct ath5k_rf_reg rf_regs_5112a[] = {
 	{6, AR5K_RF_XB2_LVL,		AR5K_RF5112A_XB2_LVL},
 	{6, AR5K_RF_XB5_LVL,		AR5K_RF5112A_XB5_LVL},
 	{7, AR5K_RF_GAIN_I,		AR5K_RF5112X_GAIN_I},
+	{7, AR5K_RF_MIXVGA_OVR,		AR5K_RF5112X_MIXVGA_OVR},
 	{7, AR5K_RF_MIXGAIN_OVR,	AR5K_RF5112X_MIXGAIN_OVR},
+	{7, AR5K_RF_MIXGAIN_STEP,	AR5K_RF5112X_MIXGAIN_STEP},
 	{7, AR5K_RF_PD_DELAY_A,		AR5K_RF5112X_PD_DELAY_A},
 	{7, AR5K_RF_PD_DELAY_B,		AR5K_RF5112X_PD_DELAY_B},
 	{7, AR5K_RF_PD_DELAY_XR,	AR5K_RF5112X_PD_DELAY_XR},