From: Xu Xuehui <xxh@rock-chips.com>
Date: Wed, 17 Aug 2016 09:41:08 +0000 (+0800)
Subject: bluetooth: rfkill-bt: enalbe 32K for ap6356
X-Git-Tag: firefly_0821_release~1693
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=firefly-linux-kernel-4.4.55.git;a=commitdiff_plain;h=c75676bb6f1a2dd45d3074dc854445ec37507a2b;ds=sidebyside

bluetooth: rfkill-bt: enalbe 32K for ap6356

Change-Id: I71a14f38ab1d46bbf3bfc991140a20d8c6a27eec
Signed-off-by: Xu Xuehui <xxh@rock-chips.com>
---

diff --git a/include/linux/rfkill-bt.h b/include/linux/rfkill-bt.h
index 4a014b64a92c..c4174b156580 100755
--- a/include/linux/rfkill-bt.h
+++ b/include/linux/rfkill-bt.h
@@ -22,6 +22,7 @@
 
 #include <linux/types.h>
 #include <linux/rfkill.h>
+#include <linux/clk.h>
 
 #define RFKILL_RK_GPIO_NAME_SIZE   64
 
@@ -63,6 +64,7 @@ struct rfkill_rk_platform_data {
     struct rfkill_rk_gpio   wake_gpio;      // Host wake or sleep BT
     struct rfkill_rk_irq    wake_host_irq;  // BT wakeup host
     struct rfkill_rk_gpio   rts_gpio;
+    struct clk              *ext_clk;
 };
 
 int rfkill_get_bt_power_state(int *power, bool *toggle);
diff --git a/net/rfkill/rfkill-bt.c b/net/rfkill/rfkill-bt.c
index 11e182882365..332eb47b0986 100644
--- a/net/rfkill/rfkill-bt.c
+++ b/net/rfkill/rfkill-bt.c
@@ -522,7 +522,13 @@ static int bluetooth_platdata_parse_dt(struct device *dev,
         LOG("%s: get property: BT,wake_host_irq = %d.\n", __func__, gpio);
     } else data->wake_host_irq.gpio.io = -1;
 
-    return 0;
+	data->ext_clk = devm_clk_get(dev, "ext_clock");
+	if (IS_ERR(data->ext_clk)) {
+		LOG("%s: clk_get failed!!!.\n", __func__);
+	} else {
+		clk_prepare_enable(data->ext_clk);
+	}
+	return 0;
 }
 #endif //CONFIG_OF
 
@@ -696,7 +702,7 @@ static int rfkill_rk_remove(struct platform_device *pdev)
     
     if (gpio_is_valid(rfkill->pdata->poweron_gpio.io))
         gpio_free(rfkill->pdata->poweron_gpio.io);
-
+	clk_disable_unprepare(rfkill->pdata->ext_clk);
     g_rfkill = NULL;
 
 	return 0;