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[U-Boot,3/6,v2] i2c: designware_i2c: Integrate set_speed() into dw_i2c_set_bus_speed()

Message ID 1458711988-3235-3-git-send-email-sr@denx.de
State Accepted
Commit 11b544ab419971bb829135743dab3397fb43db21
Delegated to: Heiko Schocher
Headers show

Commit Message

Stefan Roese March 23, 2016, 5:46 a.m. UTC 
Integrating set_speed() into dw_i2c_set_bus_speed() will make the
conversion to DM easier for this driver.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Heiko Schocher <hs@denx.de>
---
v2:
- Added Reviewed-by from Bin

 drivers/i2c/designware_i2c.c | 37 +++++++++++++------------------------
 1 file changed, 13 insertions(+), 24 deletions(-)
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Patch

diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c
index 2b0c8cb..aac56a7 100644
--- a/drivers/i2c/designware_i2c.c
+++ b/drivers/i2c/designware_i2c.c
@@ -55,16 +55,25 @@  static void dw_i2c_enable(struct i2c_regs *i2c_base, bool enable)
 }
 
 /*
- * set_speed - Set the i2c speed mode (standard, high, fast)
- * @i2c_spd:	required i2c speed mode
+ * i2c_set_bus_speed - Set the i2c speed
+ * @speed:	required i2c speed
  *
- * Set the i2c speed mode (standard, high, fast)
+ * Set the i2c speed.
  */
-static void set_speed(struct i2c_adapter *adap, int i2c_spd)
+static unsigned int dw_i2c_set_bus_speed(struct i2c_adapter *adap,
+					 unsigned int speed)
 {
 	struct i2c_regs *i2c_base = i2c_get_base(adap);
 	unsigned int cntl;
 	unsigned int hcnt, lcnt;
+	int i2c_spd;
+
+	if (speed >= I2C_MAX_SPEED)
+		i2c_spd = IC_SPEED_MODE_MAX;
+	else if (speed >= I2C_FAST_SPEED)
+		i2c_spd = IC_SPEED_MODE_FAST;
+	else
+		i2c_spd = IC_SPEED_MODE_STANDARD;
 
 	/* to set speed cltr must be disabled */
 	dw_i2c_enable(i2c_base, false);
@@ -102,27 +111,7 @@  static void set_speed(struct i2c_adapter *adap, int i2c_spd)
 
 	/* Enable back i2c now speed set */
 	dw_i2c_enable(i2c_base, true);
-}
-
-/*
- * i2c_set_bus_speed - Set the i2c speed
- * @speed:	required i2c speed
- *
- * Set the i2c speed.
- */
-static unsigned int dw_i2c_set_bus_speed(struct i2c_adapter *adap,
-					 unsigned int speed)
-{
-	int i2c_spd;
-
-	if (speed >= I2C_MAX_SPEED)
-		i2c_spd = IC_SPEED_MODE_MAX;
-	else if (speed >= I2C_FAST_SPEED)
-		i2c_spd = IC_SPEED_MODE_FAST;
-	else
-		i2c_spd = IC_SPEED_MODE_STANDARD;
 
-	set_speed(adap, i2c_spd);
 	adap->speed = speed;
 
 	return 0;