add via modify part source code for wm8880 4.4 kitkat

1 files changed, 92 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_secure_wait_wake.c b/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_secure_wait_wake.c
new file mode 100755
index 00000000..7f52cb43
--- /dev/null
+++ b/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_secure_wait_wake.c
@@ -0,0 +1,92 @@
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <linux/sched.h>
+
+#include <mach/wmt_secure.h>
+#include <mach/wmt_env.h>
+
+#define WMT_SMC_CMD_WW_BASE    60
+#define WMT_SMC_CMD_WAIT_STUB  (WMT_SMC_CMD_WW_BASE + 1)
+#define WMT_SMC_CMD_WAKE_STUB  (WMT_SMC_CMD_WW_BASE + 2)
+#define WMT_SMC_CMD_WAKE_BEGIN (WMT_SMC_CMD_WW_BASE + 3)
+#define WMT_SMC_CMD_WAKE_DONE  (WMT_SMC_CMD_WW_BASE + 4)
+#define WMT_SMC_CMD_WW_TEST    (WMT_SMC_CMD_WW_BASE + 5)
+
+DECLARE_WAIT_QUEUE_HEAD(wmt_smc_wait);
+static int smc_done = 0;
+
+static void wmt_smc_wait_stub(void)
+{
+	wait_event_interruptible(wmt_smc_wait, smc_done);
+	smc_done = 0;
+	wmt_smc(WMT_SMC_CMD_WAKE_DONE, 0);
+}
+
+static void wmt_smc_wake_stub(void)
+{
+	/* irq already been disabled in secure world */
+	smc_done = 1;
+	wake_up_interruptible(&wmt_smc_wait);
+	wmt_smc(WMT_SMC_CMD_WAKE_BEGIN, 0);
+}
+
+static void wmt_setup_wait_stub(u32 wait_stub)
+{
+	wmt_smc(WMT_SMC_CMD_WAIT_STUB, wait_stub);
+}
+
+static void wmt_setup_wake_stub(u32 wake_stub)
+{
+	wmt_smc(WMT_SMC_CMD_WAKE_STUB, wake_stub);
+}
+
+static int __init wmt_check_secure_env(void)
+{
+    int ret = 0;
+    int varlen = 128;
+    unsigned int sec_en = 0;
+    unsigned char buf[128] = {0};
+
+    /* uboot env name is: wmt.secure.param */
+    ret = wmt_getsyspara("wmt.secure.param", buf, &varlen);                                                                    
+    if (ret) {
+        ret = -ENODATA;
+        goto out;
+    }
+
+    sscanf(buf, "%d", &sec_en);
+    if (sec_en != 1) {
+        printk(KERN_INFO "wmt security extension disaled\n");
+        ret = -ENODEV;
+        goto out;
+    }
+
+out:
+    return ret;
+}
+static int __init wmt_secure_wait_wake_init(void)
+{
+	/* if secure os disabled, we do not setup stubs */
+	if (wmt_check_secure_env())
+		return -EINVAL;
+
+	wmt_setup_wait_stub((u32)wmt_smc_wait_stub);
+	wmt_setup_wake_stub((u32)wmt_smc_wake_stub);
+
+	return 0;
+}
+module_init(wmt_secure_wait_wake_init);
+
+static void __exit wmt_secure_wait_wake_exit(void)
+{
+	return ;
+}
+module_exit(wmt_secure_wait_wake_exit);
+
+MODULE_AUTHOR("WonderMedia Technologies, Inc");
+MODULE_DESCRIPTION("WMT Secure Wait & Wake Implementation");
+MODULE_LICENSE("Dual BSD/GPL");