rtw88: 8723d: Add coex support

8723D is a Wifi+BT combo card. To make them work properly, we need coex
mechanism to avoid interference, such as TX simultaneously. Basically,
coex.c provide main algorithm to deal with many use cases, and this commit
adds some parameters and ops differ from other chips, because coex
hardware and WiFi generation are changed.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200512102621.5148-8-yhchuang@realtek.com

1 files changed, 327 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8723d.c b/drivers/net/wireless/realtek/rtw88/rtw8723d.c
index e3dc27d6a6ad..400364aec393 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8723d.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8723d.c
@@ -1497,6 +1497,132 @@ out:
 	rtw_dbg(rtwdev, RTW_DBG_RFK, "[IQK] finished\n");
 }
 
+/* for coex */
+static void rtw8723d_coex_cfg_init(struct rtw_dev *rtwdev)
+{
+	/* enable TBTT nterrupt */
+	rtw_write8_set(rtwdev, REG_BCN_CTRL, BIT_EN_BCN_FUNCTION);
+
+	/* BT report packet sample rate	 */
+	/* 0x790[5:0]=0x5 */
+	rtw_write8_set(rtwdev, REG_BT_TDMA_TIME, 0x05);
+
+	/* enable BT counter statistics */
+	rtw_write8(rtwdev, REG_BT_STAT_CTRL, 0x1);
+
+	/* enable PTA (3-wire function form BT side) */
+	rtw_write32_set(rtwdev, REG_GPIO_MUXCFG, BIT_BT_PTA_EN);
+	rtw_write32_set(rtwdev, REG_GPIO_MUXCFG, BIT_BT_AOD_GPIO3);
+
+	/* enable PTA (tx/rx signal form WiFi side) */
+	rtw_write8_set(rtwdev, REG_QUEUE_CTRL, BIT_PTA_WL_TX_EN);
+}
+
+static void rtw8723d_coex_cfg_gnt_fix(struct rtw_dev *rtwdev)
+{
+}
+
+static void rtw8723d_coex_cfg_gnt_debug(struct rtw_dev *rtwdev)
+{
+	rtw_write8_mask(rtwdev, REG_LEDCFG2, BIT(6), 0);
+	rtw_write8_mask(rtwdev, REG_PAD_CTRL1 + 3, BIT(0), 0);
+	rtw_write8_mask(rtwdev, REG_GPIO_INTM + 2, BIT(4), 0);
+	rtw_write8_mask(rtwdev, REG_GPIO_MUXCFG + 2, BIT(1), 0);
+	rtw_write8_mask(rtwdev, REG_PAD_CTRL1 + 3, BIT(1), 0);
+	rtw_write8_mask(rtwdev, REG_PAD_CTRL1 + 2, BIT(7), 0);
+	rtw_write8_mask(rtwdev, REG_SYS_CLKR + 1, BIT(1), 0);
+	rtw_write8_mask(rtwdev, REG_SYS_SDIO_CTRL + 3, BIT(3), 0);
+}
+
+static void rtw8723d_coex_cfg_rfe_type(struct rtw_dev *rtwdev)
+{
+	struct rtw_efuse *efuse = &rtwdev->efuse;
+	struct rtw_coex *coex = &rtwdev->coex;
+	struct rtw_coex_rfe *coex_rfe = &coex->rfe;
+	bool aux = efuse->bt_setting & BIT(6);
+
+	coex_rfe->rfe_module_type = rtwdev->efuse.rfe_option;
+	coex_rfe->ant_switch_polarity = 0;
+	coex_rfe->ant_switch_exist = false;
+	coex_rfe->ant_switch_with_bt = false;
+	coex_rfe->ant_switch_diversity = false;
+	coex_rfe->wlg_at_btg = true;
+
+	/* decide antenna at main or aux */
+	if (efuse->share_ant) {
+		if (aux)
+			rtw_write16(rtwdev, REG_BB_SEL_BTG, 0x80);
+		else
+			rtw_write16(rtwdev, REG_BB_SEL_BTG, 0x200);
+	} else {
+		if (aux)
+			rtw_write16(rtwdev, REG_BB_SEL_BTG, 0x280);
+		else
+			rtw_write16(rtwdev, REG_BB_SEL_BTG, 0x0);
+	}
+
+	/* disable LTE coex in wifi side */
+	rtw_coex_write_indirect_reg(rtwdev, LTE_COEX_CTRL, BIT_LTE_COEX_EN, 0x0);
+	rtw_coex_write_indirect_reg(rtwdev, LTE_WL_TRX_CTRL, MASKLWORD, 0xffff);
+	rtw_coex_write_indirect_reg(rtwdev, LTE_BT_TRX_CTRL, MASKLWORD, 0xffff);
+}
+
+static void rtw8723d_coex_cfg_wl_tx_power(struct rtw_dev *rtwdev, u8 wl_pwr)
+{
+	struct rtw_coex *coex = &rtwdev->coex;
+	struct rtw_coex_dm *coex_dm = &coex->dm;
+	static const u8	wl_tx_power[] = {0xb2, 0x90};
+	u8 pwr;
+
+	if (wl_pwr == coex_dm->cur_wl_pwr_lvl)
+		return;
+
+	coex_dm->cur_wl_pwr_lvl = wl_pwr;
+
+	if (coex_dm->cur_wl_pwr_lvl >= ARRAY_SIZE(wl_tx_power))
+		coex_dm->cur_wl_pwr_lvl = ARRAY_SIZE(wl_tx_power) - 1;
+
+	pwr = wl_tx_power[coex_dm->cur_wl_pwr_lvl];
+
+	rtw_write8(rtwdev, REG_ANA_PARAM1 + 3, pwr);
+}
+
+static void rtw8723d_coex_cfg_wl_rx_gain(struct rtw_dev *rtwdev, bool low_gain)
+{
+	struct rtw_coex *coex = &rtwdev->coex;
+	struct rtw_coex_dm *coex_dm = &coex->dm;
+	/* WL Rx Low gain on */
+	static const u32 wl_rx_low_gain_on[] = {
+		0xec120101, 0xeb130101, 0xce140101, 0xcd150101, 0xcc160101,
+		0xcb170101, 0xca180101, 0x8d190101, 0x8c1a0101, 0x8b1b0101,
+		0x4f1c0101, 0x4e1d0101, 0x4d1e0101, 0x4c1f0101, 0x0e200101,
+		0x0d210101, 0x0c220101, 0x0b230101, 0xcf240001, 0xce250001,
+		0xcd260001, 0xcc270001, 0x8f280001
+	};
+	/* WL Rx Low gain off */
+	static const u32 wl_rx_low_gain_off[] = {
+		0xec120101, 0xeb130101, 0xea140101, 0xe9150101, 0xe8160101,
+		0xe7170101, 0xe6180101, 0xe5190101, 0xe41a0101, 0xe31b0101,
+		0xe21c0101, 0xe11d0101, 0xe01e0101, 0x861f0101, 0x85200101,
+		0x84210101, 0x83220101, 0x82230101, 0x81240101, 0x80250101,
+		0x44260101, 0x43270101, 0x42280101
+	};
+	u8 i;
+
+	if (low_gain == coex_dm->cur_wl_rx_low_gain_en)
+		return;
+
+	coex_dm->cur_wl_rx_low_gain_en = low_gain;
+
+	if (coex_dm->cur_wl_rx_low_gain_en) {
+		for (i = 0; i < ARRAY_SIZE(wl_rx_low_gain_on); i++)
+			rtw_write32(rtwdev, REG_AGCRSSI, wl_rx_low_gain_on[i]);
+	} else {
+		for (i = 0; i < ARRAY_SIZE(wl_rx_low_gain_off); i++)
+			rtw_write32(rtwdev, REG_AGCRSSI, wl_rx_low_gain_off[i]);
+	}
+}
+
 static u8 rtw8723d_pwrtrack_get_limit_ofdm(struct rtw_dev *rtwdev)
 {
 	struct rtw_dm_info *dm_info = &rtwdev->dm_info;
@@ -1808,6 +1934,156 @@ static struct rtw_chip_ops rtw8723d_ops = {
 	.config_bfee		= NULL,
 	.set_gid_table		= NULL,
 	.cfg_csi_rate		= NULL,
+
+	.coex_set_init		= rtw8723d_coex_cfg_init,
+	.coex_set_ant_switch	= NULL,
+	.coex_set_gnt_fix	= rtw8723d_coex_cfg_gnt_fix,
+	.coex_set_gnt_debug	= rtw8723d_coex_cfg_gnt_debug,
+	.coex_set_rfe_type	= rtw8723d_coex_cfg_rfe_type,
+	.coex_set_wl_tx_power	= rtw8723d_coex_cfg_wl_tx_power,
+	.coex_set_wl_rx_gain	= rtw8723d_coex_cfg_wl_rx_gain,
+};
+
+/* Shared-Antenna Coex Table */
+static const struct coex_table_para table_sant_8723d[] = {
+	{0xffffffff, 0xffffffff}, /* case-0 */
+	{0x55555555, 0x55555555},
+	{0x65555555, 0x65555555},
+	{0xaaaaaaaa, 0xaaaaaaaa},
+	{0x5a5a5a5a, 0x5a5a5a5a},
+	{0xfafafafa, 0xfafafafa}, /* case-5 */
+	{0xa5555555, 0xaaaa5aaa},
+	{0x6a5a5a5a, 0x5a5a5a5a},
+	{0x6a5a5a5a, 0x6a5a5a5a},
+	{0x65555555, 0x5a5a5a5a},
+	{0x65555555, 0x6a5a5a5a}, /* case-10 */
+	{0x65555555, 0xfafafafa},
+	{0x65555555, 0x6a5a5aaa},
+	{0x65555555, 0x5aaa5aaa},
+	{0x65555555, 0xaaaa5aaa},
+	{0x65555555, 0xaaaaaaaa}, /* case-15 */
+	{0xffff55ff, 0xfafafafa},
+	{0xffff55ff, 0x6afa5afa},
+	{0xaaffffaa, 0xfafafafa},
+	{0xaa5555aa, 0x5a5a5a5a},
+	{0xaa5555aa, 0x6a5a5a5a}, /* case-20 */
+	{0xaa5555aa, 0xaaaaaaaa},
+	{0xffffffff, 0x5a5a5a5a},
+	{0xffffffff, 0x6a5a5a5a},
+	{0xffffffff, 0x55555555},
+	{0xffffffff, 0x6a5a5aaa}, /* case-25 */
+	{0x55555555, 0x5a5a5a5a},
+	{0x55555555, 0xaaaaaaaa},
+	{0x55555555, 0x6a6a6a6a},
+	{0x656a656a, 0x656a656a}
+};
+
+/* Non-Shared-Antenna Coex Table */
+static const struct coex_table_para table_nsant_8723d[] = {
+	{0xffffffff, 0xffffffff}, /* case-100 */
+	{0x55555555, 0x55555555},
+	{0x65555555, 0x65555555},
+	{0xaaaaaaaa, 0xaaaaaaaa},
+	{0x5a5a5a5a, 0x5a5a5a5a},
+	{0xfafafafa, 0xfafafafa}, /* case-105 */
+	{0x5afa5afa, 0x5afa5afa},
+	{0x55555555, 0xfafafafa},
+	{0x65555555, 0xfafafafa},
+	{0x65555555, 0x5a5a5a5a},
+	{0x65555555, 0x6a5a5a5a}, /* case-110 */
+	{0x65555555, 0xaaaaaaaa},
+	{0xffff55ff, 0xfafafafa},
+	{0xffff55ff, 0x5afa5afa},
+	{0xffff55ff, 0xaaaaaaaa},
+	{0xaaffffaa, 0xfafafafa}, /* case-115 */
+	{0xaaffffaa, 0x5afa5afa},
+	{0xaaffffaa, 0xaaaaaaaa},
+	{0xffffffff, 0xfafafafa},
+	{0xffffffff, 0x5afa5afa},
+	{0xffffffff, 0xaaaaaaaa},/* case-120 */
+	{0x55ff55ff, 0x5afa5afa},
+	{0x55ff55ff, 0xaaaaaaaa},
+	{0x55ff55ff, 0x55ff55ff}
+};
+
+/* Shared-Antenna TDMA */
+static const struct coex_tdma_para tdma_sant_8723d[] = {
+	{ {0x08, 0x00, 0x00, 0x00, 0x00} }, /* case-0 */
+	{ {0x61, 0x45, 0x03, 0x11, 0x11} }, /* case-1 */
+	{ {0x61, 0x3a, 0x03, 0x11, 0x11} },
+	{ {0x61, 0x20, 0x03, 0x11, 0x11} },
+	{ {0x61, 0x30, 0x03, 0x11, 0x11} },
+	{ {0x61, 0x10, 0x03, 0x11, 0x11} }, /* case-5 */
+	{ {0x61, 0x48, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x3a, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x30, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x20, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x10, 0x03, 0x11, 0x10} }, /* case-10 */
+	{ {0x61, 0x10, 0x03, 0x11, 0x14} },
+	{ {0x61, 0x08, 0x03, 0x10, 0x14} },
+	{ {0x51, 0x10, 0x03, 0x10, 0x54} },
+	{ {0x51, 0x10, 0x03, 0x10, 0x55} },
+	{ {0x51, 0x10, 0x07, 0x10, 0x54} }, /* case-15 */
+	{ {0x51, 0x45, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x3a, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x30, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x20, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x15, 0x03, 0x10, 0x50} }, /* case-20 */
+	{ {0x51, 0x4a, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x0c, 0x03, 0x10, 0x54} },
+	{ {0x55, 0x08, 0x03, 0x10, 0x54} },
+	{ {0x65, 0x10, 0x03, 0x11, 0x11} },
+	{ {0x51, 0x10, 0x03, 0x10, 0x51} },
+	{ {0x61, 0x15, 0x03, 0x11, 0x10} }
+};
+
+/* Non-Shared-Antenna TDMA */
+static const struct coex_tdma_para tdma_nsant_8723d[] = {
+	{ {0x00, 0x00, 0x00, 0x40, 0x00} }, /* case-100 */
+	{ {0x61, 0x45, 0x03, 0x11, 0x11} }, /* case-101 */
+	{ {0x61, 0x3a, 0x03, 0x11, 0x11} },
+	{ {0x61, 0x30, 0x03, 0x11, 0x11} },
+	{ {0x61, 0x20, 0x03, 0x11, 0x11} },
+	{ {0x61, 0x10, 0x03, 0x11, 0x11} }, /* case-105 */
+	{ {0x61, 0x45, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x3a, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x30, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x20, 0x03, 0x11, 0x10} },
+	{ {0x61, 0x10, 0x03, 0x11, 0x10} }, /* case-110 */
+	{ {0x61, 0x08, 0x03, 0x11, 0x14} },
+	{ {0x61, 0x08, 0x03, 0x10, 0x14} },
+	{ {0x51, 0x08, 0x03, 0x10, 0x54} },
+	{ {0x51, 0x08, 0x03, 0x10, 0x55} },
+	{ {0x51, 0x08, 0x07, 0x10, 0x54} }, /* case-115 */
+	{ {0x51, 0x45, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x3a, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x30, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x20, 0x03, 0x10, 0x50} },
+	{ {0x51, 0x10, 0x03, 0x10, 0x50} }
+};
+
+/* rssi in percentage % (dbm = % - 100) */
+static const u8 wl_rssi_step_8723d[] = {60, 50, 44, 30};
+static const u8 bt_rssi_step_8723d[] = {30, 30, 30, 30};
+static const struct coex_5g_afh_map afh_5g_8723d[] = { {0, 0, 0} };
+
+/* wl_tx_dec_power, bt_tx_dec_power, wl_rx_gain, bt_rx_lna_constrain */
+static const struct coex_rf_para rf_para_tx_8723d[] = {
+	{0, 0, false, 7},  /* for normal */
+	{0, 10, false, 7}, /* for WL-CPT */
+	{1, 0, true, 4},
+	{1, 2, true, 4},
+	{1, 10, true, 4},
+	{1, 15, true, 4}
+};
+
+static const struct coex_rf_para rf_para_rx_8723d[] = {
+	{0, 0, false, 7},  /* for normal */
+	{0, 10, false, 7}, /* for WL-CPT */
+	{1, 0, true, 5},
+	{1, 2, true, 5},
+	{1, 10, true, 5},
+	{1, 15, true, 5}
 };
 
 static const struct rtw_pwr_seq_cmd trans_carddis_to_cardemu_8723d[] = {
@@ -2363,6 +2639,28 @@ static const struct rtw_pwr_track_tbl rtw8723d_rtw_pwr_track_tbl = {
 	.pwrtrk_xtal_n = rtw8723d_pwrtrk_xtal_n,
 };
 
+static const struct rtw_reg_domain coex_info_hw_regs_8723d[] = {
+	{0x948, MASKDWORD, RTW_REG_DOMAIN_MAC32},
+	{0x67, BIT(7), RTW_REG_DOMAIN_MAC8},
+	{0, 0, RTW_REG_DOMAIN_NL},
+	{0x964, BIT(1), RTW_REG_DOMAIN_MAC8},
+	{0x864, BIT(0), RTW_REG_DOMAIN_MAC8},
+	{0xab7, BIT(5), RTW_REG_DOMAIN_MAC8},
+	{0xa01, BIT(7), RTW_REG_DOMAIN_MAC8},
+	{0, 0, RTW_REG_DOMAIN_NL},
+	{0x430, MASKDWORD, RTW_REG_DOMAIN_MAC32},
+	{0x434, MASKDWORD, RTW_REG_DOMAIN_MAC32},
+	{0x42a, MASKLWORD, RTW_REG_DOMAIN_MAC16},
+	{0x426, MASKBYTE0, RTW_REG_DOMAIN_MAC8},
+	{0x45e, BIT(3), RTW_REG_DOMAIN_MAC8},
+	{0, 0, RTW_REG_DOMAIN_NL},
+	{0x4c6, BIT(4), RTW_REG_DOMAIN_MAC8},
+	{0x40, BIT(5), RTW_REG_DOMAIN_MAC8},
+	{0x550, MASKDWORD, RTW_REG_DOMAIN_MAC32},
+	{0x522, MASKBYTE0, RTW_REG_DOMAIN_MAC8},
+	{0x953, BIT(1), RTW_REG_DOMAIN_MAC8},
+};
+
 struct rtw_chip_info rtw8723d_hw_spec = {
 	.ops = &rtw8723d_ops,
 	.id = RTW_CHIP_TYPE_8723D,
@@ -2409,6 +2707,35 @@ struct rtw_chip_info rtw8723d_hw_spec = {
 	.rx_ldpc = false,
 	.pwr_track_tbl = &rtw8723d_rtw_pwr_track_tbl,
 	.iqk_threshold = 8,
+
+	.coex_para_ver = 0x1905302f,
+	.bt_desired_ver = 0x2f,
+	.scbd_support = true,
+	.new_scbd10_def = true,
+	.pstdma_type = COEX_PSTDMA_FORCE_LPSOFF,
+	.bt_rssi_type = COEX_BTRSSI_RATIO,
+	.ant_isolation = 15,
+	.rssi_tolerance = 2,
+	.wl_rssi_step = wl_rssi_step_8723d,
+	.bt_rssi_step = bt_rssi_step_8723d,
+	.table_sant_num = ARRAY_SIZE(table_sant_8723d),
+	.table_sant = table_sant_8723d,
+	.table_nsant_num = ARRAY_SIZE(table_nsant_8723d),
+	.table_nsant = table_nsant_8723d,
+	.tdma_sant_num = ARRAY_SIZE(tdma_sant_8723d),
+	.tdma_sant = tdma_sant_8723d,
+	.tdma_nsant_num = ARRAY_SIZE(tdma_nsant_8723d),
+	.tdma_nsant = tdma_nsant_8723d,
+	.wl_rf_para_num = ARRAY_SIZE(rf_para_tx_8723d),
+	.wl_rf_para_tx = rf_para_tx_8723d,
+	.wl_rf_para_rx = rf_para_rx_8723d,
+	.bt_afh_span_bw20 = 0x20,
+	.bt_afh_span_bw40 = 0x30,
+	.afh_5g_num = ARRAY_SIZE(afh_5g_8723d),
+	.afh_5g = afh_5g_8723d,
+
+	.coex_info_hw_regs_num = ARRAY_SIZE(coex_info_hw_regs_8723d),
+	.coex_info_hw_regs = coex_info_hw_regs_8723d,
 };
 EXPORT_SYMBOL(rtw8723d_hw_spec);