From e688df6bfa659781a69ca3a764cc928dd2e02952 Mon Sep 17 00:00:00 2001
From: Pengguang Zhu <pengguang.zhu@amlogic.com>
Date: Fri, 17 Apr 2020 15:44:17 +0800
Subject: [PATCH] tee: add api tee_unprotect_mem [1/1]

PD#TV-17133

Problem:
need API to unprotect mem for codec and so on

Solution:
add api tee_unprotect_mem

Verify:
Android Q + TM2

Test: manual
Change-Id: I9dc205e209988297724c9461254c028e779ae1eb
Signed-off-by: Pengguang Zhu <pengguang.zhu@amlogic.com>
---
 drivers/amlogic/tee/tee.c   | 32 ++++++++++++++++++++++++++++----
 include/linux/amlogic/tee.h | 17 ++++++++++++++++-
 2 files changed, 44 insertions(+), 5 deletions(-)

diff --git a/drivers/amlogic/tee/tee.c b/drivers/amlogic/tee/tee.c
index 0df70d851d15..b8c8789a1219 100644
--- a/drivers/amlogic/tee/tee.c
+++ b/drivers/amlogic/tee/tee.c
@@ -52,7 +52,11 @@ static int disable_flag;
 #define TEE_SMC_CALL_GET_OS_REVISION \
 	TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_GET_OS_REVISION)
 
-#define TEE_SMC_FUNCID_LOAD_VIDEO_FW 15
+#define TEE_SMC_FUNCID_CONFIG_DEVICE_SECURE        14
+#define TEE_SMC_CONFIG_DEVICE_SECURE \
+	TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_CONFIG_DEVICE_SECURE)
+
+#define TEE_SMC_FUNCID_LOAD_VIDEO_FW               15
 #define TEE_SMC_LOAD_VIDEO_FW \
 	TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_LOAD_VIDEO_FW)
 
@@ -68,9 +72,9 @@ static int disable_flag;
 #define TEE_SMC_PROTECT_MEM_BY_TYPE \
 	TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_PROTECT_MEM_BY_TYPE)
 
-#define TEE_SMC_FUNCID_UNPROTECT_MEM_BY_TYPE       0xE024
-#define TEE_SMC_UNPROTECT_MEM_BY_TYPE \
-	TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_UNPROTECT_MEM_BY_TYPE)
+#define TEE_SMC_FUNCID_UNPROTECT_MEM               0xE024
+#define TEE_SMC_UNPROTECT_MEM \
+	TEE_SMC_FAST_CALL_VAL(TEE_SMC_FUNCID_UNPROTECT_MEM)
 
 static struct class *tee_sys_class;
 
@@ -231,6 +235,26 @@ uint32_t tee_protect_mem_by_type(uint32_t type,
 }
 EXPORT_SYMBOL(tee_protect_mem_by_type);
 
+void tee_unprotect_mem(uint32_t handle)
+{
+	struct arm_smccc_res res;
+
+	arm_smccc_smc(TEE_SMC_UNPROTECT_MEM,
+			handle, 0, 0, 0, 0, 0, 0, &res);
+}
+EXPORT_SYMBOL(tee_unprotect_mem);
+
+int tee_config_device_state(int dev_id, int secure)
+{
+	struct arm_smccc_res res;
+
+	arm_smccc_smc(TEE_SMC_CONFIG_DEVICE_SECURE,
+			dev_id, secure, 0, 0, 0, 0, 0, &res);
+
+	return res.a0;
+}
+EXPORT_SYMBOL(tee_config_device_state);
+
 int tee_create_sysfs(void)
 {
 	int ret;
diff --git a/include/linux/amlogic/tee.h b/include/linux/amlogic/tee.h
index a481f05a06e8..fe04b6532b67 100644
--- a/include/linux/amlogic/tee.h
+++ b/include/linux/amlogic/tee.h
@@ -18,12 +18,23 @@
 #ifndef __TEE_H__
 #define __TEE_H__
 
+/* memory type used by tee_protect_mem_by_type() */
 #define TEE_MEM_TYPE_GPU                                   0x6
 #define TEE_MEM_TYPE_VDIN                                  0x7
-#define TEE_MEM_TYPE_ENCODER                               0x8
+#define TEE_MEM_TYPE_HCODEC                                0x8
 #define TEE_MEM_TYPE_GE2D                                  0x9
 #define TEE_MEM_TYPE_DEMUX                                 0xa
 
+/* device ID used by tee_config_device_state() */
+#define DMC_DEV_ID_GPU                 1
+#define DMC_DEV_ID_HEVC                4
+#define DMC_DEV_ID_PARSER              7
+#define DMC_DEV_ID_VPU                 8
+#define DMC_DEV_ID_VDIN                9
+#define DMC_DEV_ID_VDEC                13
+#define DMC_DEV_ID_HCODEC              14
+#define DMC_DEV_ID_GE2D                15
+
 extern bool tee_enabled(void);
 extern int is_secload_get(void);
 extern int tee_load_video_fw(uint32_t index, uint32_t vdec);
@@ -34,5 +45,9 @@ extern void tee_unprotect_tvp_mem(uint32_t handle);
 extern uint32_t tee_protect_mem_by_type(uint32_t type,
 		uint32_t start, uint32_t size,
 		uint32_t *handle);
+extern void tee_unprotect_mem(uint32_t handle);
+
+extern int tee_config_device_state(int dev_id, int secure);
+
 #endif /* __TEE_H__ */