i2c: designware_i2c: Use an enum for selected speed mode
Group these #defines into an enum to make it easier to understand the
relationship between them.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jun Chen <ptchentw@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c
index dd1cc0b..2416ef3 100644
--- a/drivers/i2c/designware_i2c.c
+++ b/drivers/i2c/designware_i2c.c
@@ -57,10 +57,10 @@
unsigned int speed,
unsigned int bus_mhz)
{
+ enum i2c_speed_mode i2c_spd;
unsigned int cntl;
unsigned int hcnt, lcnt;
unsigned int ena;
- int i2c_spd;
/* Allow high speed if there is no config, or the config allows it */
if (speed >= I2C_HIGH_SPEED &&
diff --git a/drivers/i2c/designware_i2c.h b/drivers/i2c/designware_i2c.h
index d4c1ca0..569cab6 100644
--- a/drivers/i2c/designware_i2c.h
+++ b/drivers/i2c/designware_i2c.h
@@ -136,9 +136,13 @@
#define IC_STATUS_ACT 0x0001
/* Speed Selection */
-#define IC_SPEED_MODE_STANDARD 1
-#define IC_SPEED_MODE_FAST 2
-#define IC_SPEED_MODE_HIGH 3
+enum i2c_speed_mode {
+ IC_SPEED_MODE_STANDARD,
+ IC_SPEED_MODE_FAST,
+ IC_SPEED_MODE_HIGH,
+
+ IC_SPEED_MODE_COUNT,
+};
#define I2C_HIGH_SPEED 3400000
#define I2C_FAST_SPEED 400000