cnss2: Set FUNC_SEL for SW_CTRL and SW_CTRL_WLAN GPIO

From Sun onwards FUNC_SEL for SW_CTRL and SW_CTRL_WLAN
GPIO needs to be set by client. Add support to set
funtion to "wcn_sw_ctrl" and "wcn_sw" for SW_CTRL and
SW_CTRL_WLAN GPIO so that, when these GPIOs goes high,
PDC get interrupted and TCS sequence(which enables RF_CLK)
can be started.

Change-Id: Ia2ba7d8a89fe6bb54b6563f5319d50c90df2210d
CRs-Fixed: 3668322

cnss2/main.h

@@ -132,6 +132,8 @@ struct cnss_pinctrl_info {
 	struct pinctrl_state *sol_default;
 	struct pinctrl_state *wlan_en_active;
 	struct pinctrl_state *wlan_en_sleep;
+	struct pinctrl_state *sw_ctrl;
+	struct pinctrl_state *sw_ctrl_wl_cx;
 	int bt_en_gpio;
 	int wlan_en_gpio;
 	int xo_clk_gpio; /*qca6490 only */

cnss2/power.c

@@ -880,10 +880,43 @@ int cnss_get_pinctrl(struct cnss_plat_data *plat_priv)
 							       0);
 		cnss_pr_dbg("Switch control GPIO: %d\n",
 			    pinctrl_info->sw_ctrl_gpio);
+
+		pinctrl_info->sw_ctrl =
+			pinctrl_lookup_state(pinctrl_info->pinctrl,
+					     "sw_ctrl");
+		if (IS_ERR_OR_NULL(pinctrl_info->sw_ctrl)) {
+			ret = PTR_ERR(pinctrl_info->sw_ctrl);
+			cnss_pr_dbg("Failed to get sw_ctrl state, err = %d\n",
+				    ret);
+		} else {
+			ret = pinctrl_select_state(pinctrl_info->pinctrl,
+						   pinctrl_info->sw_ctrl);
+			if (ret)
+				cnss_pr_err("Failed to select sw_ctrl state, err = %d\n",
+					    ret);
+		}
 	} else {
 		pinctrl_info->sw_ctrl_gpio = -EINVAL;
 	}
 
+	if (of_find_property(dev->of_node, WLAN_SW_CTRL_GPIO, NULL)) {
+		pinctrl_info->sw_ctrl_wl_cx =
+			pinctrl_lookup_state(pinctrl_info->pinctrl,
+					     "sw_ctrl_wl_cx");
+		if (IS_ERR_OR_NULL(pinctrl_info->sw_ctrl_wl_cx)) {
+			ret = PTR_ERR(pinctrl_info->sw_ctrl_wl_cx);
+			cnss_pr_dbg("Failed to get sw_ctrl_wl_cx state, err = %d\n",
+				    ret);
+		} else {
+
+			ret = pinctrl_select_state(pinctrl_info->pinctrl,
+						   pinctrl_info->sw_ctrl_wl_cx);
+			if (ret)
+				cnss_pr_err("Failed to select sw_ctrl_wl_cx state, err = %d\n",
+					    ret);
+		}
+	}
+
 	/* Find out and configure all those GPIOs which need to be setup
 	 * for interrupt wakeup capable
 	 */