[ARM] pxa/cm-x300: add Wi2Wi chip (Bluetooth and WiFi) initialization

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index 8726dc7c73a6..9a21bc567ca2 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
 #include <linux/init.h>
+#include <linux/delay.h>
 #include <linux/platform_device.h>
 
 #include <linux/gpio.h>
@@ -513,6 +514,42 @@ static void __init cm_x300_init_rtc(void)
 static inline void cm_x300_init_rtc(void) {}
 #endif
 
+static void __init cm_x300_init_wi2wi(void)
+{
+        int bt_reset, wlan_en;
+        int err;
+
+        if (system_rev < 130) {
+                wlan_en = 77;
+                bt_reset = 78;
+        } else {
+                wlan_en = 71;
+                bt_reset = 70;
+        }
+
+        /* Libertas and CSR reset */
+        err = gpio_request(wlan_en, "wlan en");
+        if (err) {
+                pr_err("CM-X300: failed to request wlan en gpio: %d\n", err);
+        } else {
+                gpio_direction_output(wlan_en, 1);
+                gpio_free(wlan_en);
+        }
+
+        err = gpio_request(bt_reset, "bt reset");
+        if (err) {
+                pr_err("CM-X300: failed to request bt reset gpio: %d\n", err);
+        } else {
+                gpio_direction_output(bt_reset, 1);
+                udelay(10);
+                gpio_set_value(bt_reset, 0);
+                udelay(10);
+                gpio_set_value(bt_reset, 1);
+                gpio_free(bt_reset);
+        }
+}
+
+/* MFP */
 static void __init cm_x300_init_mfp(void)
 {
         /* board-processor specific GPIO initialization */
@@ -542,6 +579,7 @@ static void __init cm_x300_init(void)
         cm_x300_init_spi();
         cm_x300_init_rtc();
         cm_x300_init_ac97();
+        cm_x300_init_wi2wi();
 }
 
 static void __init cm_x300_fixup(struct machine_desc *mdesc, struct tag *tags,