Messages in this thread Patch in this message | | | From | Stephen Boyd <> | Subject | [PATCH v2] iio: sx9310: Fix semtech,avg-pos-strength setting when > 16 | Date | Fri, 20 Nov 2020 10:29:44 -0800 |
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This DT property can be 0, 16, and then 64, but not 32. The math here doesn't recognize this slight bump in the power of 2 numbers and translates a DT property of 64 into the register value '3' when it really should be '2'. Fix it by subtracting one more if the number being translated is larger than 16.
Cc: Daniel Campello <campello@chromium.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Cc: Douglas Anderson <dianders@chromium.org> Cc: Gwendal Grignou <gwendal@chromium.org> Cc: Evan Green <evgreen@chromium.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> ---
Changes from v1 (https://lore.kernel.org/r/20201120073842.3232458-1-swboyd@chromium.org): * Changed ternary to consider 17 to 31 as the same as 16
drivers/iio/proximity/sx9310.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index a2f820997afc..ee1b4ff05a37 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -1305,7 +1305,7 @@ sx9310_get_default_reg(struct sx9310_data *data, int i, if (ret) break; - pos = min(max(ilog2(pos), 3), 10) - 3; + pos = min(max(ilog2(pos), 3), 11) - (pos >= 32 ? 4 : 3); reg_def->def &= ~SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK; reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK, pos); base-commit: 5b19ca2c78a0838976064c0347e46a2c859b541d -- https://chromeos.dev
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