From: lbt <lbt@rock-chips.com>
Date: Thu, 2 Sep 2010 08:33:03 +0000 (+0800)
Subject: mach:infosdk: add file board-infosdk-rfkill.c to support bt rfkill
X-Git-Tag: firefly_0821_release~11196
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7c9b9a9fd80b76cfecbb4e0f7d761591843f196c;p=firefly-linux-kernel-4.4.55.git

mach:infosdk: add file board-infosdk-rfkill.c to support bt rfkill
---

diff --git a/arch/arm/mach-rk2818/board-infosdk-rfkill.c b/arch/arm/mach-rk2818/board-infosdk-rfkill.c
new file mode 100755
index 000000000000..3806bd48f046
--- /dev/null
+++ b/arch/arm/mach-rk2818/board-infosdk-rfkill.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2010 ROCKCHIP, Inc.
+ * Author: roger_chen <cz@rock-chips.com>
+ *
+ * This program is the bluetooth device bcm4329's driver,
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/rfkill.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+//#include <asm/gpio.h>
+//#include <asm/arch/gpio.h>
+//#include <asm/arch/iomux.h>
+//#include <asm/arch/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/wakelock.h>
+#include <mach/spi_fpga.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include <mach/gpio.h>
+
+#if 1
+#define DBG(x...)   printk(KERN_INFO x)
+#else
+#define DBG(x...)
+#endif
+
+#define INFO_BT_GPIO_POWER_N   TCA6424_P25
+#define INFO_BT_GPIO_RESET_N   TCA6424_P22
+
+static struct rfkill *bt_rfk;
+static const char bt_name[] = "bcm4329";
+extern int info_bt_power_state;
+extern int info_wifi_power_state;
+  
+static int bcm4329_set_block(void *data, bool blocked)
+{
+    	DBG("%s---blocked :%d\n", __FUNCTION__, blocked);
+
+    	if (false == blocked) {          
+		gpio_set_value(INFO_BT_GPIO_POWER_N, GPIO_HIGH);  /* bt power on */
+		gpio_set_value(INFO_BT_GPIO_RESET_N, GPIO_HIGH);  /* bt reset deactive*/
+		mdelay(20);
+        	pr_info("bt turn on power\n");
+    	}
+    	else {
+		if (!info_wifi_power_state) {
+			gpio_set_value(INFO_BT_GPIO_POWER_N, GPIO_LOW);  /* bt power off */
+        		mdelay(20);	
+        		pr_info("bt shut off power\n");
+		}else {
+			pr_info("bt shouldn't shut off power, wifi is using it!\n");
+		}
+
+		gpio_set_value(INFO_BT_GPIO_RESET_N, GPIO_LOW);  /* bt reset active*/
+		mdelay(20);
+    	}
+
+	info_bt_power_state = !blocked;
+    	return 0;
+}
+
+
+static const struct rfkill_ops bcm4329_rfk_ops = {
+	.set_block = bcm4329_set_block,
+};
+
+static int __init bcm4329_rfkill_probe(struct platform_device *pdev)
+{
+	int rc = 0;
+	
+	DBG("Enter::%s,line=%d\n",__FUNCTION__,__LINE__);
+	
+	/* default to bluetooth off */
+//	rfkill_switch_all(RFKILL_TYPE_BLUETOOTH, true);
+    
+    	bt_rfk = rfkill_alloc(bt_name, 
+                    NULL, 
+                    RFKILL_TYPE_BLUETOOTH, 
+                    &bcm4329_rfk_ops, 
+                    NULL);
+
+	if (!bt_rfk)
+	{
+		printk("fail to rfkill_allocate************\n");
+		return -ENOMEM;
+	}
+
+	rc = rfkill_register(bt_rfk);
+	if (rc)
+		rfkill_destroy(bt_rfk);
+
+    	printk("rc=0x%x\n", rc);
+    
+	return rc;
+}
+
+
+static int __devexit bcm4329_rfkill_remove(struct platform_device *pdev)
+{
+	if (bt_rfk)
+		rfkill_unregister(bt_rfk);
+	bt_rfk = NULL;
+
+	platform_set_drvdata(pdev, NULL);
+	DBG("Enter::%s,line=%d\n",__FUNCTION__,__LINE__);
+	return 0;
+}
+
+static struct platform_driver bcm4329_rfkill_driver = {
+	.probe = bcm4329_rfkill_probe,
+	.remove = __devexit_p(bcm4329_rfkill_remove),
+	.driver = {
+		.name = "info_rfkill", 
+		.owner = THIS_MODULE,
+	},
+};
+
+/*
+ * Module initialization
+ */
+static int __init bcm4329_mod_init(void)
+{
+	int ret;
+	DBG("Enter::%s,line=%d\n",__FUNCTION__,__LINE__);
+	ret = platform_driver_register(&bcm4329_rfkill_driver);
+    	printk("ret=0x%x\n", ret);
+	return ret;
+}
+
+static void __exit bcm4329_mod_exit(void)
+{
+	platform_driver_unregister(&bcm4329_rfkill_driver);
+}
+
+module_init(bcm4329_mod_init);
+module_exit(bcm4329_mod_exit);
+MODULE_DESCRIPTION("bcm4329 Bluetooth driver");
+MODULE_AUTHOR("roger_chen cz@rock-chips.com");
+MODULE_LICENSE("GPL");
+