2 files changed, 27 insertions, 11 deletions

diff --git a/drivers/i2c/busses/i2c-stm32.h b/drivers/i2c/busses/i2c-stm32.h
new file mode 100644
index 000000000000..dab51761f8c5
--- /dev/null
+++ b/drivers/i2c/busses/i2c-stm32.h
@@ -0,0 +1,20 @@
+/*
+ * i2c-stm32.h
+ *
+ * Copyright (C) M'boumba Cedric Madianga 2017
+ * Author: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
+ *
+ * License terms:  GNU General Public License (GPL), version 2
+ */
+
+#ifndef _I2C_STM32_H
+#define _I2C_STM32_H
+
+enum stm32_i2c_speed {
+        STM32_I2C_SPEED_STANDARD, /* 100 kHz */
+        STM32_I2C_SPEED_FAST, /* 400 kHz */
+        STM32_I2C_SPEED_FAST_PLUS, /* 1 MHz */
+        STM32_I2C_SPEED_END,
+};
+
+#endif /* _I2C_STM32_H */
diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c
index aceb6f788564..4ec108496f15 100644
--- a/drivers/i2c/busses/i2c-stm32f4.c
+++ b/drivers/i2c/busses/i2c-stm32f4.c
@@ -27,6 +27,8 @@
 #include <linux/platform_device.h>
 #include <linux/reset.h>
 
+#include "i2c-stm32.h"
+
 /* STM32F4 I2C offset registers */
 #define STM32F4_I2C_CR1                 0x00
 #define STM32F4_I2C_CR2                 0x04
@@ -90,12 +92,6 @@
 #define STM32F4_I2C_MAX_FREQ            46U
 #define HZ_TO_MHZ                       1000000
 
-enum stm32f4_i2c_speed {
-        STM32F4_I2C_SPEED_STANDARD, /* 100 kHz */
-        STM32F4_I2C_SPEED_FAST, /* 400 kHz */
-        STM32F4_I2C_SPEED_END,
-};
-
 /**
  * struct stm32f4_i2c_msg - client specific data
  * @addr: 8-bit slave addr, including r/w bit
@@ -159,7 +155,7 @@ static int stm32f4_i2c_set_periph_clk_freq(struct stm32f4_i2c_dev *i2c_dev)
         i2c_dev->parent_rate = clk_get_rate(i2c_dev->clk);
         freq = DIV_ROUND_UP(i2c_dev->parent_rate, HZ_TO_MHZ);
 
-        if (i2c_dev->speed == STM32F4_I2C_SPEED_STANDARD) {
+        if (i2c_dev->speed == STM32_I2C_SPEED_STANDARD) {
                 /*
                  * To reach 100 kHz, the parent clk frequency should be between
                  * a minimum value of 2 MHz and a maximum value of 46 MHz due
@@ -216,7 +212,7 @@ static void stm32f4_i2c_set_rise_time(struct stm32f4_i2c_dev *i2c_dev)
          * is not higher than 46 MHz . As a result trise is at most 4 bits wide
          * and so fits into the TRISE bits [5:0].
          */
-        if (i2c_dev->speed == STM32F4_I2C_SPEED_STANDARD)
+        if (i2c_dev->speed == STM32_I2C_SPEED_STANDARD)
                 trise = freq + 1;
         else
                 trise = freq * 3 / 10 + 1;
@@ -230,7 +226,7 @@ static void stm32f4_i2c_set_speed_mode(struct stm32f4_i2c_dev *i2c_dev)
         u32 val;
         u32 ccr = 0;
 
-        if (i2c_dev->speed == STM32F4_I2C_SPEED_STANDARD) {
+        if (i2c_dev->speed == STM32_I2C_SPEED_STANDARD) {
                 /*
                  * In standard mode:
                  * t_scl_high = t_scl_low = CCR * I2C parent clk period
@@ -808,10 +804,10 @@ static int stm32f4_i2c_probe(struct platform_device *pdev)
         udelay(2);
         reset_control_deassert(rst);
 
-        i2c_dev->speed = STM32F4_I2C_SPEED_STANDARD;
+        i2c_dev->speed = STM32_I2C_SPEED_STANDARD;
         ret = of_property_read_u32(np, "clock-frequency", &clk_rate);
         if (!ret && clk_rate >= 400000)
-                i2c_dev->speed = STM32F4_I2C_SPEED_FAST;
+                i2c_dev->speed = STM32_I2C_SPEED_FAST;
 
         i2c_dev->dev = &pdev->dev;