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| author | David Lechner <david@lechnology.com> | 2020-12-14 01:09:27 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-01-14 21:56:56 +0100 |
| commit | 49a9565a7a7ce168e3e6482fb24e62d12f72ab81 (patch) | |
| tree | 6551fd99b1fa43e534f35c925a64361baa6be08a /drivers/counter/ti-eqep.c | |
| parent | drivers: iio: temperature: Add delay after the addressed reset command in mlx... (diff) | |
| download | linux-49a9565a7a7ce168e3e6482fb24e62d12f72ab81.tar.xz linux-49a9565a7a7ce168e3e6482fb24e62d12f72ab81.zip | |
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/ti-eqep.c')
| -rw-r--r-- | drivers/counter/ti-eqep.c | 35 |
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, |