wil6210: store FW RF calibration result

Store initial FW RF calibration result in driver. Set this calibration
result back to FW after each FW reset in order to avoid future calibration
procedures.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/wil6210/main.c

@@ -1034,6 +1034,12 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
 		wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0);
 		wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0);
 
+		if (wil->fw_calib_result > 0) {
+			__le32 val = cpu_to_le32(wil->fw_calib_result |
+						 (CALIB_RESULT_SIGNATURE << 8));
+			wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val);
+		}
+
 		wil_release_cpu(wil);
 	}
 

drivers/net/wireless/ath/wil6210/wil6210.h

@@ -171,6 +171,10 @@ struct RGF_ICR {
 #define RGF_USER_USER_SCRATCH_PAD	(0x8802bc)
 #define RGF_USER_BL			(0x880A3C) /* Boot Loader */
 #define RGF_USER_FW_REV_ID		(0x880a8c) /* chip revision */
+#define RGF_USER_FW_CALIB_RESULT	(0x880a90) /* b0-7:result
+						    * b8-15:signature
+						    */
+	#define CALIB_RESULT_SIGNATURE	(0x11)
 #define RGF_USER_CLKS_CTL_0		(0x880abc)
 	#define BIT_USER_CLKS_CAR_AHB_SW_SEL	BIT(1) /* ref clk/PLL */
 	#define BIT_USER_CLKS_RST_PWGD	BIT(11) /* reset on "power good" */
@@ -724,6 +728,8 @@ struct wil6210_priv {
 
 	enum wmi_ps_profile_type ps_profile;
 
+	int fw_calib_result;
+
 #ifdef CONFIG_PM
 #ifdef CONFIG_PM_SLEEP
 	struct notifier_block pm_notify;

drivers/net/wireless/ath/wil6210/wmi.c

@@ -344,6 +344,11 @@ static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
 	strlcpy(wdev->wiphy->fw_version, wil->fw_version,
 		sizeof(wdev->wiphy->fw_version));
 
+	if (len > offsetof(struct wmi_ready_event, rfc_read_calib_result)) {
+		wil_dbg_wmi(wil, "rfc calibration result %d\n",
+			    evt->rfc_read_calib_result);
+		wil->fw_calib_result = evt->rfc_read_calib_result;
+	}
 	wil_set_recovery_state(wil, fw_recovery_idle);
 	set_bit(wil_status_fwready, wil->status);
 	/* let the reset sequence continue */

drivers/net/wireless/ath/wil6210/wmi.h

@@ -1300,6 +1300,8 @@ struct wmi_ready_event {
 	/* enum wmi_phy_capability */
 	u8 phy_capability;
 	u8 numof_additional_mids;
+	u8 rfc_read_calib_result;
+	u8 reserved[3];
 } __packed;
 
 /* WMI_NOTIFY_REQ_DONE_EVENTID */