From: Axel Lin <axel.lin@ingics.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Nancy Chen <Nancy.Chen@freescale.com>,
"Ying-Chun Liu (PaulLiu)" <paulliu@debian.org>,
Liam Girdwood <lrg@ti.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH RFT 1/2] regulator: anatop: Use linear_min_sel with linear mapping
Date: Sun, 09 Dec 2012 08:05:45 +0800 [thread overview]
Message-ID: <1355011545.3283.1.camel@phoenix> (raw)
By setting linear_min_sel to anatop_reg->min_bit_val, we can avoid
adjust the anatop_reg->min_bit_val offset in [set|get]_voltage_sel.
With this chance we can refactor this driver to use
regulator_[get|set]_voltage_sel_regmap.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
drivers/regulator/anatop-regulator.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index 1aa5246..645a42d 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -48,18 +48,16 @@ static int anatop_regmap_set_voltage_sel(struct regulator_dev *reg,
unsigned selector)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
- u32 val, mask;
+ u32 mask;
if (!anatop_reg->control_reg)
return -ENOTSUPP;
- val = anatop_reg->min_bit_val + selector;
- dev_dbg(®->dev, "%s: calculated val %d\n", __func__, val);
mask = ((1 << anatop_reg->vol_bit_width) - 1) <<
anatop_reg->vol_bit_shift;
- val <<= anatop_reg->vol_bit_shift;
+ selector <<= anatop_reg->vol_bit_shift;
regmap_update_bits(anatop_reg->anatop, anatop_reg->control_reg,
- mask, val);
+ mask, selector);
return 0;
}
@@ -77,7 +75,7 @@ static int anatop_regmap_get_voltage_sel(struct regulator_dev *reg)
anatop_reg->vol_bit_shift;
val = (val & mask) >> anatop_reg->vol_bit_shift;
- return val - anatop_reg->min_bit_val;
+ return val;
}
static struct regulator_ops anatop_rops = {
@@ -158,10 +156,11 @@ static int anatop_regulator_probe(struct platform_device *pdev)
goto anatop_probe_end;
}
- rdesc->n_voltages = (sreg->max_voltage - sreg->min_voltage)
- / 25000 + 1;
+ rdesc->n_voltages = (sreg->max_voltage - sreg->min_voltage) / 25000 + 1
+ + sreg->min_bit_val;
rdesc->min_uV = sreg->min_voltage;
rdesc->uV_step = 25000;
+ rdesc->linear_min_sel = sreg->min_bit_val;
config.dev = &pdev->dev;
config.init_data = initdata;
--
1.7.9.5
next reply other threads:[~2012-12-09 0:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-09 0:05 Axel Lin [this message]
2012-12-09 0:07 ` [PATCH RFT 2/2] regulator: anatop: Use regulator_[get|set]_voltage_sel_regmap Axel Lin
2012-12-09 5:38 ` Ying-Chun Liu (PaulLiu)
2012-12-09 5:37 ` [PATCH RFT 1/2] regulator: anatop: Use linear_min_sel with linear mapping Ying-Chun Liu (PaulLiu)
2012-12-10 3:12 ` Mark Brown
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