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authorDavid Lechner <david@lechnology.com>2020-12-13 18:09:27 -0600
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2021-01-14 20:56:56 +0000
commit49a9565a7a7ce168e3e6482fb24e62d12f72ab81 (patch)
tree6551fd99b1fa43e534f35c925a64361baa6be08a /drivers/counter
parentcf5b1385d748b2f91b0c05bb301fcaf9bdbad385 (diff)
counter:ti-eqep: remove floor
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@lechnology.com> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Link: https://lore.kernel.org/r/20201214000927.1793062-1-david@lechnology.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/counter')
-rw-r--r--drivers/counter/ti-eqep.c35
1 files changed, 0 insertions, 35 deletions
diff --git a/drivers/counter/ti-eqep.c b/drivers/counter/ti-eqep.c
index a60aee1a1a29..65df9ef5b5bc 100644
--- a/drivers/counter/ti-eqep.c
+++ b/drivers/counter/ti-eqep.c
@@ -235,36 +235,6 @@ static ssize_t ti_eqep_position_ceiling_write(struct counter_device *counter,
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_position_ext[] = {
.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,