[PATCH v2 03/16] arm: stm32mp: move the get_otp helper function in bsec

[Patrick Delaunay]

As the get_otp() helper function in bsec are common for all STM32MP family,
move this function in bsec driver

Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>
---

(no changes since v1)

 arch/arm/mach-stm32mp/bsec.c                   | 17 +++++++++++++++++
 arch/arm/mach-stm32mp/cpu.c                    | 17 -----------------
 arch/arm/mach-stm32mp/include/mach/sys_proto.h |  3 +++
 3 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/arch/arm/mach-stm32mp/bsec.c b/arch/arm/mach-stm32mp/bsec.c
index 506caa0a31..c00130b08b 100644
--- a/arch/arm/mach-stm32mp/bsec.c
+++ b/arch/arm/mach-stm32mp/bsec.c
@@ -632,3 +632,20 @@ bool bsec_dbgswenable(void)
 
 	return false;
 }
+
+u32 get_otp(int index, int shift, int mask)
+{
+	int ret;
+	struct udevice *dev;
+	u32 otp = 0;
+
+	ret = uclass_get_device_by_driver(UCLASS_MISC,
+					  DM_DRIVER_GET(stm32mp_bsec),
+					  &dev);
+
+	if (!ret)
+		ret = misc_read(dev, STM32_BSEC_SHADOW(index),
+				&otp, sizeof(otp));
+
+	return (otp >> shift) & mask;
+}
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index 0ad5f307db..6f44c75515 100644
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -349,23 +349,6 @@ u32 get_cpu_rev(void)
 	return (read_idc() & DBGMCU_IDC_REV_ID_MASK) >> DBGMCU_IDC_REV_ID_SHIFT;
 }
 
-static u32 get_otp(int index, int shift, int mask)
-{
-	int ret;
-	struct udevice *dev;
-	u32 otp = 0;
-
-	ret = uclass_get_device_by_driver(UCLASS_MISC,
-					  DM_DRIVER_GET(stm32mp_bsec),
-					  &dev);
-
-	if (!ret)
-		ret = misc_read(dev, STM32_BSEC_SHADOW(index),
-				&otp, sizeof(otp));
-
-	return (otp >> shift) & mask;
-}
-
 /* Get Device Part Number (RPN) from OTP */
 static u32 get_cpu_rpn(void)
 {
diff --git a/arch/arm/mach-stm32mp/include/mach/sys_proto.h b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
index b91f98eb45..dc98f0c5a4 100644
--- a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
+++ b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
@@ -52,3 +52,6 @@ int setup_mac_address(void);
 
 /* board power management : configure vddcore according OPP */
 void board_vddcore_init(u32 voltage_mv);
+
+/* helper function: read data from OTP */
+u32 get_otp(int index, int shift, int mask);
-- 
2.25.1