wcnss: Proxy vote for Iris regulators on behalf of Riva

This patch includes the following changes,
a. Proxy vote for Iris regulators on behalf of Riva.
b. During SSR power-on, vote for Iris regulators just like in
   cold boot.
c. Remove wcnss_riva.h, it was meant to be local to platform driver.
d. Make WCNSS platform driver part of kernel

Change-Id: Ied1f91297305469a0e4d9e524a03b49e1f600852
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>
diff --git a/arch/arm/configs/msm8960_defconfig b/arch/arm/configs/msm8960_defconfig
index 47e3c41..bb94d2a 100644
--- a/arch/arm/configs/msm8960_defconfig
+++ b/arch/arm/configs/msm8960_defconfig
@@ -235,7 +235,7 @@
 CONFIG_KS8851=m
 # CONFIG_NETDEV_1000 is not set
 # CONFIG_NETDEV_10000 is not set
-CONFIG_WCNSS_CORE=m
+CONFIG_WCNSS_CORE=y
 CONFIG_USB_USBNET=y
 CONFIG_SLIP=y
 CONFIG_SLIP_COMPRESSED=y
diff --git a/arch/arm/mach-msm/wcnss-ssr-8960.c b/arch/arm/mach-msm/wcnss-ssr-8960.c
index 18b7334..af92d22 100644
--- a/arch/arm/mach-msm/wcnss-ssr-8960.c
+++ b/arch/arm/mach-msm/wcnss-ssr-8960.c
@@ -17,6 +17,8 @@
 #include <linux/io.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/wcnss_wlan.h>
 #include <mach/irqs.h>
 #include <mach/scm.h>
 #include <mach/subsystem_restart.h>
@@ -79,14 +81,32 @@
 /* Subsystem handlers */
 static int riva_shutdown(const struct subsys_data *subsys)
 {
+	struct platform_device *pdev = wcnss_get_platform_device();
+	struct wcnss_wlan_config *pwlanconfig = wcnss_get_wlan_config();
+	int    ret = -1;
+
 	pil_force_shutdown("wcnss");
-	return 0;
+
+	/* proxy vote on behalf of Riva */
+	if (pdev && pwlanconfig)
+		ret = wcnss_wlan_power(&pdev->dev, pwlanconfig,
+					WCNSS_WLAN_SWITCH_OFF);
+	return ret;
 }
 
 static int riva_powerup(const struct subsys_data *subsys)
 {
-	pil_force_boot("wcnss");
-	return 0;
+	struct platform_device *pdev = wcnss_get_platform_device();
+	struct wcnss_wlan_config *pwlanconfig = wcnss_get_wlan_config();
+	int    ret = -1;
+
+	if (pdev && pwlanconfig)
+		ret = wcnss_wlan_power(&pdev->dev, pwlanconfig,
+					WCNSS_WLAN_SWITCH_ON);
+	if (!ret)
+		pil_force_boot("wcnss");
+
+	return ret;
 }
 
 /* RAM segments for Riva SS;