rt2x00: add support for MT7620

Basic support for MT7620 built-in wireless radio was added to
OpenWrt in r41441. It has seen some heavy cleaning and refactoring
since in order to match the Kernel's code quality standards.
Signed-off-by: NRoman Yeryomin <roman@advem.lv>
Signed-off-by: NDaniel Golle <daniel@makrotopia.org>
Acked-by: NStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ralink/rt2x00/Kconfig

@@ -201,7 +201,7 @@ endif
 
 config RT2800SOC
 	tristate "Ralink WiSoC support"
-	depends on SOC_RT288X || SOC_RT305X
+	depends on SOC_RT288X || SOC_RT305X || SOC_MT7620
 	select RT2X00_LIB_SOC
 	select RT2X00_LIB_MMIO
 	select RT2X00_LIB_CRYPTO

drivers/net/wireless/ralink/rt2x00/rt2800.h

@@ -79,6 +79,7 @@
 #define RF5372				0x5372
 #define RF5390				0x5390
 #define RF5392				0x5392
+#define RF7620				0x7620
 
 /*
  * Chipset revisions.
@@ -638,6 +639,24 @@
 #define RF_CSR_CFG_WRITE		FIELD32(0x00010000)
 #define RF_CSR_CFG_BUSY			FIELD32(0x00020000)
 
+/*
+ * MT7620 RF registers (reversed order)
+ */
+#define RF_CSR_CFG_DATA_MT7620		FIELD32(0x0000ff00)
+#define RF_CSR_CFG_REGNUM_MT7620	FIELD32(0x03ff0000)
+#define RF_CSR_CFG_WRITE_MT7620		FIELD32(0x00000010)
+#define RF_CSR_CFG_BUSY_MT7620		FIELD32(0x00000001)
+
+/* undocumented registers for calibration of new MAC */
+#define RF_CONTROL0			0x0518
+#define RF_BYPASS0			0x051c
+#define RF_CONTROL1			0x0520
+#define RF_BYPASS1			0x0524
+#define RF_CONTROL2			0x0528
+#define RF_BYPASS2			0x052c
+#define RF_CONTROL3			0x0530
+#define RF_BYPASS3			0x0534
+
 /*
  * EFUSE_CSR: RT30x0 EEPROM
  */
@@ -1021,6 +1040,16 @@
 #define AUTOWAKEUP_CFG_TBCN_BEFORE_WAKE	FIELD32(0x00007f00)
 #define AUTOWAKEUP_CFG_AUTOWAKE		FIELD32(0x00008000)
 
+/*
+ * MIMO_PS_CFG: MIMO Power-save Configuration
+ */
+#define MIMO_PS_CFG			0x1210
+#define MIMO_PS_CFG_MMPS_BB_EN		FIELD32(0x00000001)
+#define MIMO_PS_CFG_MMPS_RX_ANT_NUM	FIELD32(0x00000006)
+#define MIMO_PS_CFG_MMPS_RF_EN		FIELD32(0x00000008)
+#define MIMO_PS_CFG_RX_STBY_POL		FIELD32(0x00000010)
+#define MIMO_PS_CFG_RX_RX_STBY0		FIELD32(0x00000020)
+
 /*
  * EDCA_AC0_CFG:
  */
@@ -1095,6 +1124,12 @@
 #define TX_PWR_CFG_0_OFDM6_CH1		FIELD32(0x00f00000)
 #define TX_PWR_CFG_0_OFDM12_CH0		FIELD32(0x0f000000)
 #define TX_PWR_CFG_0_OFDM12_CH1		FIELD32(0xf0000000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_0B_1MBS_2MBS		FIELD32(0x000000ff)
+#define TX_PWR_CFG_0B_5MBS_11MBS		FIELD32(0x0000ff00)
+#define TX_PWR_CFG_0B_6MBS_9MBS		FIELD32(0x00ff0000)
+#define TX_PWR_CFG_0B_12MBS_18MBS	FIELD32(0xff000000)
+
 
 /*
  * TX_PWR_CFG_1:
@@ -1117,6 +1152,11 @@
 #define TX_PWR_CFG_1_MCS0_CH1		FIELD32(0x00f00000)
 #define TX_PWR_CFG_1_MCS2_CH0		FIELD32(0x0f000000)
 #define TX_PWR_CFG_1_MCS2_CH1		FIELD32(0xf0000000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_1B_24MBS_36MBS	FIELD32(0x000000ff)
+#define TX_PWR_CFG_1B_48MBS		FIELD32(0x0000ff00)
+#define TX_PWR_CFG_1B_MCS0_MCS1		FIELD32(0x00ff0000)
+#define TX_PWR_CFG_1B_MCS2_MCS3		FIELD32(0xff000000)
 
 /*
  * TX_PWR_CFG_2:
@@ -1139,6 +1179,11 @@
 #define TX_PWR_CFG_2_MCS8_CH1		FIELD32(0x00f00000)
 #define TX_PWR_CFG_2_MCS10_CH0		FIELD32(0x0f000000)
 #define TX_PWR_CFG_2_MCS10_CH1		FIELD32(0xf0000000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_2B_MCS4_MCS5		FIELD32(0x000000ff)
+#define TX_PWR_CFG_2B_MCS6_MCS7		FIELD32(0x0000ff00)
+#define TX_PWR_CFG_2B_MCS8_MCS9		FIELD32(0x00ff0000)
+#define TX_PWR_CFG_2B_MCS10_MCS11	FIELD32(0xff000000)
 
 /*
  * TX_PWR_CFG_3:
@@ -1161,6 +1206,11 @@
 #define TX_PWR_CFG_3_STBC0_CH1		FIELD32(0x00f00000)
 #define TX_PWR_CFG_3_STBC2_CH0		FIELD32(0x0f000000)
 #define TX_PWR_CFG_3_STBC2_CH1		FIELD32(0xf0000000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_3B_MCS12_MCS13	FIELD32(0x000000ff)
+#define TX_PWR_CFG_3B_MCS14		FIELD32(0x0000ff00)
+#define TX_PWR_CFG_3B_STBC_MCS0_MCS1	FIELD32(0x00ff0000)
+#define TX_PWR_CFG_3B_STBC_MCS2_MSC3	FIELD32(0xff000000)
 
 /*
  * TX_PWR_CFG_4:
@@ -1175,6 +1225,9 @@
 #define TX_PWR_CFG_4_STBC4_CH1		FIELD32(0x000000f0)
 #define TX_PWR_CFG_4_STBC6_CH0		FIELD32(0x00000f00)
 #define TX_PWR_CFG_4_STBC6_CH1		FIELD32(0x0000f000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_4B_STBC_MCS4_MCS5	FIELD32(0x000000ff)
+#define TX_PWR_CFG_4B_STBC_MCS6		FIELD32(0x0000ff00)
 
 /*
  * TX_PIN_CFG:
@@ -1201,6 +1254,8 @@
 #define TX_PIN_CFG_RFTR_POL		FIELD32(0x00020000)
 #define TX_PIN_CFG_TRSW_EN		FIELD32(0x00040000)
 #define TX_PIN_CFG_TRSW_POL		FIELD32(0x00080000)
+#define TX_PIN_CFG_RFRX_EN		FIELD32(0x00100000)
+#define TX_PIN_CFG_RFRX_POL		FIELD32(0x00200000)
 #define TX_PIN_CFG_PA_PE_A2_EN		FIELD32(0x01000000)
 #define TX_PIN_CFG_PA_PE_G2_EN		FIELD32(0x02000000)
 #define TX_PIN_CFG_PA_PE_A2_POL		FIELD32(0x04000000)
@@ -1547,6 +1602,95 @@
 #define TX_PWR_CFG_4_EXT_STBC4_CH2	FIELD32(0x0000000f)
 #define TX_PWR_CFG_4_EXT_STBC6_CH2	FIELD32(0x00000f00)
 
+/* TXn_RF_GAIN_CORRECT: RF Gain Correction for each RF_ALC[3:2]
+ * Unit: 0.1 dB, Range: -3.2 dB to 3.1 dB
+ */
+#define TX0_RF_GAIN_CORRECT		0x13a0
+#define TX0_RF_GAIN_CORRECT_GAIN_CORR_0	FIELD32(0x0000003f)
+#define TX0_RF_GAIN_CORRECT_GAIN_CORR_1	FIELD32(0x00003f00)
+#define TX0_RF_GAIN_CORRECT_GAIN_CORR_2	FIELD32(0x003f0000)
+#define TX0_RF_GAIN_CORRECT_GAIN_CORR_3	FIELD32(0x3f000000)
+
+#define TX1_RF_GAIN_CORRECT		0x13a4
+#define TX1_RF_GAIN_CORRECT_GAIN_CORR_0	FIELD32(0x0000003f)
+#define TX1_RF_GAIN_CORRECT_GAIN_CORR_1	FIELD32(0x00003f00)
+#define TX1_RF_GAIN_CORRECT_GAIN_CORR_2	FIELD32(0x003f0000)
+#define TX1_RF_GAIN_CORRECT_GAIN_CORR_3	FIELD32(0x3f000000)
+
+/* TXn_RF_GAIN_ATTEN: TXn RF Gain Attenuation Level
+ * Format: 7-bit, signed value
+ * Unit: 0.5 dB, Range: -20 dB to -5 dB
+ */
+#define TX0_RF_GAIN_ATTEN		0x13a8
+#define TX0_RF_GAIN_ATTEN_LEVEL_0	FIELD32(0x0000007f)
+#define TX0_RF_GAIN_ATTEN_LEVEL_1	FIELD32(0x00007f00)
+#define TX0_RF_GAIN_ATTEN_LEVEL_2	FIELD32(0x007f0000)
+#define TX0_RF_GAIN_ATTEN_LEVEL_3	FIELD32(0x7f000000)
+#define TX1_RF_GAIN_ATTEN		0x13ac
+#define TX1_RF_GAIN_ATTEN_LEVEL_0	FIELD32(0x0000007f)
+#define TX1_RF_GAIN_ATTEN_LEVEL_1	FIELD32(0x00007f00)
+#define TX1_RF_GAIN_ATTEN_LEVEL_2	FIELD32(0x007f0000)
+#define TX1_RF_GAIN_ATTEN_LEVEL_3	FIELD32(0x7f000000)
+
+/* TX_ALC_CFG_0: TX Automatic Level Control Configuration 0
+ * TX_ALC_LIMIT_n: TXn upper limit
+ * TX_ALC_CH_INIT_n: TXn channel initial transmission gain
+ * Unit: 0.5 dB, Range: 0 to 23.5 dB
+ */
+#define TX_ALC_CFG_0			0x13b0
+#define TX_ALC_CFG_0_CH_INIT_0		FIELD32(0x0000003f)
+#define TX_ALC_CFG_0_CH_INIT_1		FIELD32(0x00003f00)
+#define TX_ALC_CFG_0_LIMIT_0		FIELD32(0x003f0000)
+#define TX_ALC_CFG_0_LIMIT_1		FIELD32(0x3f000000)
+
+/* TX_ALC_CFG_1: TX Automatic Level Control Configuration 1
+ * TX_TEMP_COMP:      TX Power Temperature Compensation
+ *                    Unit: 0.5 dB, Range: -10 dB to 10 dB
+ * TXn_GAIN_FINE:     TXn Gain Fine Adjustment
+ *                    Unit: 0.1 dB, Range: -0.8 dB to 0.7 dB
+ * RF_TOS_DLY:        Sets the RF_TOS_EN assertion delay after
+ *                    deassertion of PA_PE.
+ *                    Unit: 0.25 usec
+ * TXn_RF_GAIN_ATTEN: TXn RF gain attentuation selector
+ * RF_TOS_TIMEOUT:    time-out value for RF_TOS_ENABLE
+ *                    deassertion if RF_TOS_DONE is missing.
+ *                    Unit: 0.25 usec
+ * RF_TOS_ENABLE:     TX offset calibration enable
+ * ROS_BUSY_EN:       RX offset calibration busy enable
+ */
+#define TX_ALC_CFG_1			0x13b4
+#define TX_ALC_CFG_1_TX_TEMP_COMP	FIELD32(0x0000003f)
+#define TX_ALC_CFG_1_TX0_GAIN_FINE	FIELD32(0x00000f00)
+#define TX_ALC_CFG_1_TX1_GAIN_FINE	FIELD32(0x0000f000)
+#define TX_ALC_CFG_1_RF_TOS_DLY		FIELD32(0x00070000)
+#define TX_ALC_CFG_1_TX0_RF_GAIN_ATTEN	FIELD32(0x00300000)
+#define TX_ALC_CFG_1_TX1_RF_GAIN_ATTEN	FIELD32(0x00c00000)
+#define TX_ALC_CFG_1_RF_TOS_TIMEOUT	FIELD32(0x3f000000)
+#define TX_ALC_CFG_1_RF_TOS_ENABLE	FIELD32(0x40000000)
+#define TX_ALC_CFG_1_ROS_BUSY_EN	FIELD32(0x80000000)
+
+/* TXn_BB_GAIN_ATTEN: TXn RF Gain Attenuation Level
+ * Format: 5-bit signed values
+ * Unit: 0.5 dB, Range: -8 dB to 7 dB
+ */
+#define TX0_BB_GAIN_ATTEN		0x13c0
+#define TX0_BB_GAIN_ATTEN_LEVEL_0	FIELD32(0x0000001f)
+#define TX0_BB_GAIN_ATTEN_LEVEL_1	FIELD32(0x00001f00)
+#define TX0_BB_GAIN_ATTEN_LEVEL_2	FIELD32(0x001f0000)
+#define TX0_BB_GAIN_ATTEN_LEVEL_3	FIELD32(0x1f000000)
+#define TX1_BB_GAIN_ATTEN		0x13c4
+#define TX1_BB_GAIN_ATTEN_LEVEL_0	FIELD32(0x0000001f)
+#define TX1_BB_GAIN_ATTEN_LEVEL_1	FIELD32(0x00001f00)
+#define TX1_BB_GAIN_ATTEN_LEVEL_2	FIELD32(0x001f0000)
+#define TX1_BB_GAIN_ATTEN_LEVEL_3	FIELD32(0x1f000000)
+
+/* TX_ALC_VGA3: TX Automatic Level Correction Variable Gain Amplifier 3 */
+#define TX_ALC_VGA3			0x13c8
+#define TX_ALC_VGA3_TX0_ALC_VGA3	FIELD32(0x0000001f)
+#define TX_ALC_VGA3_TX1_ALC_VGA3	FIELD32(0x00001f00)
+#define TX_ALC_VGA3_TX0_ALC_VGA2	FIELD32(0x001f0000)
+#define TX_ALC_VGA3_TX1_ALC_VGA2	FIELD32(0x1f000000)
+
 /* TX_PWR_CFG_7 */
 #define TX_PWR_CFG_7			0x13d4
 #define TX_PWR_CFG_7_OFDM54_CH0		FIELD32(0x0000000f)
@@ -1555,6 +1699,10 @@
 #define TX_PWR_CFG_7_MCS7_CH0		FIELD32(0x000f0000)
 #define TX_PWR_CFG_7_MCS7_CH1		FIELD32(0x00f00000)
 #define TX_PWR_CFG_7_MCS7_CH2		FIELD32(0x0f000000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_7B_54MBS		FIELD32(0x000000ff)
+#define TX_PWR_CFG_7B_MCS7		FIELD32(0x00ff0000)
+
 
 /* TX_PWR_CFG_8 */
 #define TX_PWR_CFG_8			0x13d8
@@ -1564,12 +1712,17 @@
 #define TX_PWR_CFG_8_MCS23_CH0		FIELD32(0x000f0000)
 #define TX_PWR_CFG_8_MCS23_CH1		FIELD32(0x00f00000)
 #define TX_PWR_CFG_8_MCS23_CH2		FIELD32(0x0f000000)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_8B_MCS15		FIELD32(0x000000ff)
+
 
 /* TX_PWR_CFG_9 */
 #define TX_PWR_CFG_9			0x13dc
 #define TX_PWR_CFG_9_STBC7_CH0		FIELD32(0x0000000f)
 #define TX_PWR_CFG_9_STBC7_CH1		FIELD32(0x000000f0)
 #define TX_PWR_CFG_9_STBC7_CH2		FIELD32(0x00000f00)
+/* bits for new 2T devices */
+#define TX_PWR_CFG_9B_STBC_MCS7		FIELD32(0x000000ff)
 
 /*
  * RX_FILTER_CFG: RX configuration register.
@@ -2137,11 +2290,14 @@ struct mac_iveiv_entry {
 #define RFCSR1_TX1_PD			FIELD8(0x20)
 #define RFCSR1_RX2_PD			FIELD8(0x40)
 #define RFCSR1_TX2_PD			FIELD8(0x80)
+#define RFCSR1_TX2_EN_MT7620		FIELD8(0x02)
 
 /*
  * RFCSR 2:
  */
 #define RFCSR2_RESCAL_EN		FIELD8(0x80)
+#define RFCSR2_RX2_EN_MT7620		FIELD8(0x02)
+#define RFCSR2_TX2_EN_MT7620		FIELD8(0x20)
 
 /*
  * RFCSR 3:
@@ -2159,6 +2315,12 @@ struct mac_iveiv_entry {
 #define RFCSR3_BIT4			FIELD8(0x10)
 #define RFCSR3_BIT5			FIELD8(0x20)
 
+/*
+ * RFCSR 4:
+ * VCOCAL_EN used by MT7620
+ */
+#define RFCSR4_VCOCAL_EN		FIELD8(0x80)
+
 /*
  * FRCSR 5:
  */
@@ -2214,6 +2376,7 @@ struct mac_iveiv_entry {
  */
 #define RFCSR13_TX_POWER		FIELD8(0x1f)
 #define RFCSR13_DR0			FIELD8(0xe0)
+#define RFCSR13_RDIV_MT7620		FIELD8(0x03)
 
 /*
  * RFCSR 15:
@@ -2224,6 +2387,8 @@ struct mac_iveiv_entry {
  * RFCSR 16:
  */
 #define RFCSR16_TXMIXER_GAIN		FIELD8(0x07)
+#define RFCSR16_RF_PLL_FREQ_SEL_MT7620	FIELD8(0x0F)
+#define RFCSR16_SDM_MODE_MT7620		FIELD8(0xE0)
 
 /*
  * RFCSR 17:
@@ -2236,6 +2401,8 @@ struct mac_iveiv_entry {
 /* RFCSR 18 */
 #define RFCSR18_XO_TUNE_BYPASS		FIELD8(0x40)
 
+/* RFCSR 19 */
+#define RFCSR19_K			FIELD8(0x03)
 
 /*
  * RFCSR 20:
@@ -2246,11 +2413,14 @@ struct mac_iveiv_entry {
  * RFCSR 21:
  */
 #define RFCSR21_RX_LO2_EN		FIELD8(0x08)
+#define RFCSR21_BIT1			FIELD8(0x01)
+#define RFCSR21_BIT8			FIELD8(0x80)
 
 /*
  * RFCSR 22:
  */
 #define RFCSR22_BASEBAND_LOOPBACK	FIELD8(0x01)
+#define RFCSR22_FREQPLAN_D_MT7620	FIELD8(0x07)
 
 /*
  * RFCSR 23:
@@ -2272,6 +2442,11 @@ struct mac_iveiv_entry {
 #define RFCSR27_R3			FIELD8(0x30)
 #define RFCSR27_R4			FIELD8(0x40)
 
+/*
+ * RFCSR 28:
+ */
+#define RFCSR28_CH11_HT40		FIELD8(0x04)
+
 /*
  * RFCSR 29:
  */
@@ -2333,6 +2508,7 @@ struct mac_iveiv_entry {
  */
 #define RFCSR42_BIT1			FIELD8(0x01)
 #define RFCSR42_BIT4			FIELD8(0x08)
+#define RFCSR42_TX2_EN_MT7620		FIELD8(0x40)
 
 /*
  * RFCSR 49:
@@ -2435,6 +2611,7 @@ enum rt2800_eeprom_word {
 	EEPROM_TSSI_BOUND_BG5,
 	EEPROM_TXPOWER_A1,
 	EEPROM_TXPOWER_A2,
+	EEPROM_TXPOWER_INIT,
 	EEPROM_TSSI_BOUND_A1,
 	EEPROM_TSSI_BOUND_A2,
 	EEPROM_TSSI_BOUND_A3,

drivers/net/wireless/ralink/rt2x00/rt2800lib.h

@@ -33,6 +33,10 @@
 struct rt2800_drv_data {
 	u8 calibration_bw20;
 	u8 calibration_bw40;
+	char rx_calibration_bw20;
+	char rx_calibration_bw40;
+	char tx_calibration_bw20;
+	char tx_calibration_bw40;
 	u8 bbp25;
 	u8 bbp26;
 	u8 txmixer_gain_24g;

drivers/net/wireless/ralink/rt2x00/rt2x00.h

@@ -174,6 +174,7 @@ struct rt2x00_chip {
 #define RT5390		0x5390  /* 2.4GHz */
 #define RT5392		0x5392  /* 2.4GHz */
 #define RT5592		0x5592
+#define RT6352		0x6352  /* WSOC 2.4GHz */
 
 	u16 rf;
 	u16 rev;