qcacld-3.0: Add athdiag functions for USB interface

For QCN7605 chip, FW team need athdiag tool to operate FW
information. Host driver need to pass the command and result
between athdiag tool and FW.

Change-Id: Ib3f4498ba560b2b76ec6939760535069777b972c
CRs-Fixed: 2595510

core/pld/src/pld_common.c

@@ -1614,7 +1614,11 @@ int pld_athdiag_read(struct device *dev, uint32_t offset,
 					    datalen, output);
 		break;
 	case PLD_BUS_TYPE_SDIO:
+		break;
 	case PLD_BUS_TYPE_USB:
+		ret = pld_usb_athdiag_read(dev, offset, memtype,
+					   datalen, output);
+		break;
 	case PLD_BUS_TYPE_PCIE_FW_SIM:
 	case PLD_BUS_TYPE_SNOC_FW_SIM:
 	case PLD_BUS_TYPE_IPCI:
@@ -1654,7 +1658,11 @@ int pld_athdiag_write(struct device *dev, uint32_t offset,
 					     datalen, input);
 		break;
 	case PLD_BUS_TYPE_SDIO:
+		break;
 	case PLD_BUS_TYPE_USB:
+		ret = pld_usb_athdiag_write(dev, offset, memtype,
+					    datalen, input);
+		break;
 	case PLD_BUS_TYPE_PCIE_FW_SIM:
 	case PLD_BUS_TYPE_SNOC_FW_SIM:
 	case PLD_BUS_TYPE_IPCI:

core/pld/src/pld_usb.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -311,6 +311,20 @@ int pld_usb_is_fw_down(struct device *dev)
 	return cnss_usb_is_device_down(dev);
 }
 
+int pld_usb_athdiag_read(struct device *dev, uint32_t offset,
+			 uint32_t memtype, uint32_t datalen,
+			 uint8_t *output)
+{
+	return cnss_athdiag_read(dev, offset, memtype, datalen, output);
+}
+
+int pld_usb_athdiag_write(struct device *dev, uint32_t offset,
+			  uint32_t memtype, uint32_t datalen,
+			  uint8_t *input)
+{
+	return cnss_athdiag_write(dev, offset, memtype, datalen, input);
+}
+
 #else /* CONFIG_PLD_USB_CNSS */
 
 struct usb_driver pld_usb_ops = {
@@ -381,4 +395,18 @@ int pld_usb_is_fw_down(struct device *dev)
 	return 0;
 }
 
+int pld_usb_athdiag_read(struct device *dev, uint32_t offset,
+			 uint32_t memtype, uint32_t datalen,
+			 uint8_t *output)
+{
+	return 0;
+}
+
+int pld_usb_athdiag_write(struct device *dev, uint32_t offset,
+			  uint32_t memtype, uint32_t datalen,
+			  uint8_t *input)
+{
+	return 0;
+}
+
 #endif /* CONFIG_PLD_USB_CNSS */

core/pld/src/pld_usb.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -27,6 +27,34 @@ int pld_usb_get_ce_id(int irq);
 int pld_usb_wlan_enable(struct device *dev, struct pld_wlan_enable_cfg *config,
 			enum pld_driver_mode mode, const char *host_version);
 int pld_usb_is_fw_down(struct device *dev);
+/**
+ * pld_usb_athdiag_read() - Read data from WLAN FW through USB interface
+ * @dev: pointer of device
+ * @offset: address offset
+ * @memtype: memory type
+ * @datalen: data length
+ * @output: pointer of output buffer
+ *
+ * Return: 0 for success
+ *         Non zero failure code for errors
+ */
+int pld_usb_athdiag_read(struct device *dev, uint32_t offset,
+			 uint32_t memtype, uint32_t datalen,
+			 uint8_t *output);
+/**
+ * pld_usb_athdiag_write() - Write data to WLAN FW through USB interface
+ * @dev: pointer of device
+ * @offset: address offset
+ * @memtype: memory type
+ * @datalen: data length
+ * @output: pointer of input buffer
+ *
+ * Return: 0 for success
+ *         Non zero failure code for errors
+ */
+int pld_usb_athdiag_write(struct device *dev, uint32_t offset,
+			  uint32_t memtype, uint32_t datalen,
+			  uint8_t *input);
 
 #else
 static inline int pld_usb_register_driver(void)
@@ -50,6 +78,19 @@ static inline int pld_usb_is_fw_down(struct device *dev)
 	return  0;
 }
 
+static inline int pld_usb_athdiag_read(struct device *dev, uint32_t offset,
+				       uint32_t memtype, uint32_t datalen,
+				       uint8_t *output)
+{
+	return 0;
+}
+
+static inline int pld_usb_athdiag_write(struct device *dev, uint32_t offset,
+					uint32_t memtype, uint32_t datalen,
+					uint8_t *input)
+{
+	return 0;
+}
 #endif
 
 static inline int