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regulator: fan53555: Improve vsel_mask computation

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In preparation for introducing support for additional regulators which
do not use the maximum number of voltage selectors available for a given
mask, improve the mask computation formula by using fls().

Note fls() requires the bitops header, hence include it explicitly and
drop bits.h which is already pulled by bitops.h.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230406194158.963352-7-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cristian Ciocaltea 2023-04-06 22:41:56 +03:00 committed by Mark Brown
parent d25016618c
commit 6bb18339c6
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 2 deletions
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4
drivers/regulator/fan53555.c
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@ -8,7 +8,7 @@
// Copyright (c) 2012 Marvell Technology Ltd.
// Yunfan Zhang <yfzhang@marvell.com>
#include <linux/bits.h>
#include <linux/bitops.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/module.h>
@ -486,7 +486,7 @@ static int fan53555_regulator_register(struct fan53555_device_info *di,
rdesc->min_uV = di->vsel_min;
rdesc->uV_step = di->vsel_step;
rdesc->vsel_reg = di->vol_reg;
rdesc->vsel_mask = di->vsel_count - 1;
rdesc->vsel_mask = BIT(fls(di->vsel_count - 1)) - 1;
rdesc->ramp_reg = di->slew_reg;
rdesc->ramp_mask = di->slew_mask;
rdesc->ramp_delay_table = di->ramp_delay_table;