rtw89: add chip_info::{h2c,c2h}_reg to support more chips

This is a register-based H2C/C2H interface to exchange data with firmware.
Since the register addresses of 8852A and 8852C are different, add fields
to chip_info to support this.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220307060457.56789-9-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/core.h

@@ -2309,6 +2309,10 @@ struct rtw89_chip_info {
 	u8 ps_mode_supported;
 
 	u32 hci_func_en_addr;
+	u32 h2c_ctrl_reg;
+	const u32 *h2c_regs;
+	u32 c2h_ctrl_reg;
+	const u32 *c2h_regs;
 };
 
 union rtw89_bus_info {

drivers/net/wireless/realtek/rtw89/fw.c

@@ -1832,15 +1832,13 @@ void rtw89_fw_c2h_work(struct work_struct *work)
 static int rtw89_fw_write_h2c_reg(struct rtw89_dev *rtwdev,
 				  struct rtw89_mac_h2c_info *info)
 {
-	static const u32 h2c_reg[RTW89_H2CREG_MAX] = {
-		R_AX_H2CREG_DATA0, R_AX_H2CREG_DATA1,
-		R_AX_H2CREG_DATA2, R_AX_H2CREG_DATA3
-	};
+	const struct rtw89_chip_info *chip = rtwdev->chip;
+	const u32 *h2c_reg = chip->h2c_regs;
 	u8 i, val, len;
 	int ret;
 
 	ret = read_poll_timeout(rtw89_read8, val, val == 0, 1000, 5000, false,
-				rtwdev, R_AX_H2CREG_CTRL);
+				rtwdev, chip->h2c_ctrl_reg);
 	if (ret) {
 		rtw89_warn(rtwdev, "FW does not process h2c registers\n");
 		return ret;
@@ -1854,7 +1852,7 @@ static int rtw89_fw_write_h2c_reg(struct rtw89_dev *rtwdev,
 	for (i = 0; i < RTW89_H2CREG_MAX; i++)
 		rtw89_write32(rtwdev, h2c_reg[i], info->h2creg[i]);
 
-	rtw89_write8(rtwdev, R_AX_H2CREG_CTRL, B_AX_H2CREG_TRIGGER);
+	rtw89_write8(rtwdev, chip->h2c_ctrl_reg, B_AX_H2CREG_TRIGGER);
 
 	return 0;
 }
@@ -1862,10 +1860,8 @@ static int rtw89_fw_write_h2c_reg(struct rtw89_dev *rtwdev,
 static int rtw89_fw_read_c2h_reg(struct rtw89_dev *rtwdev,
 				 struct rtw89_mac_c2h_info *info)
 {
-	static const u32 c2h_reg[RTW89_C2HREG_MAX] = {
-		R_AX_C2HREG_DATA0, R_AX_C2HREG_DATA1,
-		R_AX_C2HREG_DATA2, R_AX_C2HREG_DATA3
-	};
+	const struct rtw89_chip_info *chip = rtwdev->chip;
+	const u32 *c2h_reg = chip->c2h_regs;
 	u32 ret;
 	u8 i, val;
 
@@ -1873,7 +1869,7 @@ static int rtw89_fw_read_c2h_reg(struct rtw89_dev *rtwdev,
 
 	ret = read_poll_timeout_atomic(rtw89_read8, val, val, 1,
 				       RTW89_C2H_TIMEOUT, false, rtwdev,
-				       R_AX_C2HREG_CTRL);
+				       chip->c2h_ctrl_reg);
 	if (ret) {
 		rtw89_warn(rtwdev, "c2h reg timeout\n");
 		return ret;
@@ -1882,7 +1878,7 @@ static int rtw89_fw_read_c2h_reg(struct rtw89_dev *rtwdev,
 	for (i = 0; i < RTW89_C2HREG_MAX; i++)
 		info->c2hreg[i] = rtw89_read32(rtwdev, c2h_reg[i]);
 
-	rtw89_write8(rtwdev, R_AX_C2HREG_CTRL, 0);
+	rtw89_write8(rtwdev, chip->c2h_ctrl_reg, 0);
 
 	info->id = RTW89_GET_C2H_HDR_FUNC(*info->c2hreg);
 	info->content_len = (RTW89_GET_C2H_HDR_LEN(*info->c2hreg) << 2) -

drivers/net/wireless/realtek/rtw89/reg.h

@@ -217,6 +217,17 @@
 #define B_AX_ASFF_FULL_NO_STK BIT(1)
 #define B_AX_EN_STUCK_DBG BIT(0)
 
+#define R_AX_H2CREG_DATA0_V1 0x7140
+#define R_AX_H2CREG_DATA1_V1 0x7144
+#define R_AX_H2CREG_DATA2_V1 0x7148
+#define R_AX_H2CREG_DATA3_V1 0x714C
+#define R_AX_C2HREG_DATA0_V1 0x7150
+#define R_AX_C2HREG_DATA1_V1 0x7154
+#define R_AX_C2HREG_DATA2_V1 0x7158
+#define R_AX_C2HREG_DATA3_V1 0x715C
+#define R_AX_H2CREG_CTRL_V1 0x7160
+#define R_AX_C2HREG_CTRL_V1 0x7164
+
 #define R_AX_HCI_FUNC_EN_V1 0x7880
 
 #define R_AX_PHYREG_SET 0x8040

drivers/net/wireless/realtek/rtw89/rtw8852a.c

@@ -3,6 +3,7 @@
  */
 
 #include "coex.h"
+#include "fw.h"
 #include "mac.h"
 #include "phy.h"
 #include "reg.h"
@@ -376,6 +377,16 @@ static const struct rtw89_pwr_cfg * const pwr_off_seq_8852a[] = {
 	rtw8852a_pwroff, NULL
 };
 
+static const u32 rtw8852a_h2c_regs[RTW89_H2CREG_MAX] = {
+	R_AX_H2CREG_DATA0, R_AX_H2CREG_DATA1,  R_AX_H2CREG_DATA2,
+	R_AX_H2CREG_DATA3
+};
+
+static const u32 rtw8852a_c2h_regs[RTW89_C2HREG_MAX] = {
+	R_AX_C2HREG_DATA0, R_AX_C2HREG_DATA1, R_AX_C2HREG_DATA2,
+	R_AX_C2HREG_DATA3
+};
+
 static void rtw8852ae_efuse_parsing(struct rtw89_efuse *efuse,
 				    struct rtw8852a_efuse *map)
 {
@@ -2058,6 +2069,10 @@ const struct rtw89_chip_info rtw8852a_chip_info = {
 				  BIT(RTW89_PS_MODE_CLK_GATED) |
 				  BIT(RTW89_PS_MODE_PWR_GATED),
 	.hci_func_en_addr	= R_AX_HCI_FUNC_EN,
+	.h2c_ctrl_reg		= R_AX_H2CREG_CTRL,
+	.h2c_regs		= rtw8852a_h2c_regs,
+	.c2h_ctrl_reg		= R_AX_C2HREG_CTRL,
+	.c2h_regs		= rtw8852a_c2h_regs,
 };
 EXPORT_SYMBOL(rtw8852a_chip_info);
 

drivers/net/wireless/realtek/rtw89/rtw8852c.c

@@ -2,10 +2,21 @@
 /* Copyright(c) 2019-2022  Realtek Corporation
  */
 
+#include "fw.h"
 #include "mac.h"
 #include "reg.h"
 #include "rtw8852c.h"
 
+static const u32 rtw8852c_h2c_regs[RTW89_H2CREG_MAX] = {
+	R_AX_H2CREG_DATA0_V1, R_AX_H2CREG_DATA1_V1, R_AX_H2CREG_DATA2_V1,
+	R_AX_H2CREG_DATA3_V1
+};
+
+static const u32 rtw8852c_c2h_regs[RTW89_H2CREG_MAX] = {
+	R_AX_C2HREG_DATA0_V1, R_AX_C2HREG_DATA1_V1, R_AX_C2HREG_DATA2_V1,
+	R_AX_C2HREG_DATA3_V1
+};
+
 static int rtw8852c_pwr_on_func(struct rtw89_dev *rtwdev)
 {
 	u32 val32;
@@ -195,6 +206,10 @@ const struct rtw89_chip_info rtw8852c_chip_info = {
 	.pwr_on_seq		= NULL,
 	.pwr_off_seq		= NULL,
 	.hci_func_en_addr	= R_AX_HCI_FUNC_EN_V1,
+	.h2c_ctrl_reg		= R_AX_H2CREG_CTRL_V1,
+	.h2c_regs		= rtw8852c_h2c_regs,
+	.c2h_ctrl_reg		= R_AX_C2HREG_CTRL_V1,
+	.c2h_regs		= rtw8852c_c2h_regs,
 };
 EXPORT_SYMBOL(rtw8852c_chip_info);