[PATCH 5.10 115/199] counter:ti-eqep: remove floor

[Greg Kroah-Hartman]

From: David Lechner <david@xxxxxxxxxxxxxx>

commit 49a9565a7a7ce168e3e6482fb24e62d12f72ab81 upstream.

The hardware doesn't support this. QPOSINIT is an initialization value
that is triggered by other things. When the counter overflows, it
always wraps around to zero.

Fixes: f213729f6796 "counter: new TI eQEP driver"
Signed-off-by: David Lechner <david@xxxxxxxxxxxxxx>
Acked-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx>
Link: https://lore.kernel.org/r/20201214000927.1793062-1-david@xxxxxxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/counter/ti-eqep.c |   35 -----------------------------------
 1 file changed, 35 deletions(-)

--- a/drivers/counter/ti-eqep.c
+++ b/drivers/counter/ti-eqep.c
@@ -235,36 +235,6 @@ static ssize_t ti_eqep_position_ceiling_
 	return len;
 }
 
-static ssize_t ti_eqep_position_floor_read(struct counter_device *counter,
-					   struct counter_count *count,
-					   void *ext_priv, char *buf)
-{
-	struct ti_eqep_cnt *priv = counter->priv;
-	u32 qposinit;
-
-	regmap_read(priv->regmap32, QPOSINIT, &qposinit);
-
-	return sprintf(buf, "%u\n", qposinit);
-}
-
-static ssize_t ti_eqep_position_floor_write(struct counter_device *counter,
-					    struct counter_count *count,
-					    void *ext_priv, const char *buf,
-					    size_t len)
-{
-	struct ti_eqep_cnt *priv = counter->priv;
-	int err;
-	u32 res;
-
-	err = kstrtouint(buf, 0, &res);
-	if (err < 0)
-		return err;
-
-	regmap_write(priv->regmap32, QPOSINIT, res);
-
-	return len;
-}
-
 static ssize_t ti_eqep_position_enable_read(struct counter_device *counter,
 					    struct counter_count *count,
 					    void *ext_priv, char *buf)
@@ -302,11 +272,6 @@ static struct counter_count_ext ti_eqep_
 		.write	= ti_eqep_position_ceiling_write,
 	},
 	{
-		.name	= "floor",
-		.read	= ti_eqep_position_floor_read,
-		.write	= ti_eqep_position_floor_write,
-	},
-	{
 		.name	= "enable",
 		.read	= ti_eqep_position_enable_read,
 		.write	= ti_eqep_position_enable_write,