[PATCH v4 29/48] mfd: ti_am335x_tscadc: Drop useless definitions from the header

Miquel Raynal
2021-09-28T13:33:19Z

Drop useless definitions from the header like the "masks" definitions
which are only used by the following definition.

It could be possible to got even further by removing these definitions
entirely and use FIELD_PREP() macros from the code directly, but while I
have no troubles making these changes in the header, changing the values
in the code directly could darkening a bit the logic and
hardening future git-blames for very little added value IMHO (but this
is of course a personal taste).

Certain macros are using GENMASK() to define the value of a particular
field, while this is purely "by chance" that the value and the mask have
the same value. In this case, drop the "mask" definition, use
FIELD_PREP() and GENMASK() in the macro defining the field, and use the
new macro to define the particular value by feeding directly the actual
number advertised in the datasheet into that macro, as in:
-#define STEPCONFIG_RFM_VREFN GENMASK(24, 23)
-#define STEPCONFIG_RFM(val) FIELD_PREP(STEPCONFIG_RFM_VREFN, (val))
+#define STEPCONFIG_RFM(val) FIELD_PREP(GENMASK(24, 23), (val))
+#define STEPCONFIG_RFM_VREFN STEPCONFIG_RFM(3)

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
include/linux/mfd/ti_am335x_tscadc.h | 44 ++++++++++------------------
1 file changed, 16 insertions(+), 28 deletions(-)

diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h
index 31cffb6e8b17..51d987080cd3 100644
--- a/include/linux/mfd/ti_am335x_tscadc.h
+++ b/include/linux/mfd/ti_am335x_tscadc.h
@@ -52,12 +52,10 @@
#define IRQENB_PENUP BIT(9)

/* Step Configuration */
-#define STEPCONFIG_MODE_MASK GENMASK(1, 0)
-#define STEPCONFIG_MODE(val) FIELD_PREP(STEPCONFIG_MODE_MASK, (val))
+#define STEPCONFIG_MODE(val) FIELD_PREP(GENMASK(1, 0), (val))
#define STEPCONFIG_MODE_SWCNT STEPCONFIG_MODE(1)
#define STEPCONFIG_MODE_HWSYNC STEPCONFIG_MODE(2)
-#define STEPCONFIG_AVG_MASK GENMASK(4, 2)
-#define STEPCONFIG_AVG(val) FIELD_PREP(STEPCONFIG_AVG_MASK, (val))
+#define STEPCONFIG_AVG(val) FIELD_PREP(GENMASK(4, 2), (val))
#define STEPCONFIG_AVG_16 STEPCONFIG_AVG(4)
#define STEPCONFIG_XPP BIT(5)
#define STEPCONFIG_XNN BIT(6)
@@ -65,45 +63,36 @@
#define STEPCONFIG_YNN BIT(8)
#define STEPCONFIG_XNP BIT(9)
#define STEPCONFIG_YPN BIT(10)
-#define STEPCONFIG_RFP_VREFP GENMASK(13, 12)
-#define STEPCONFIG_RFP(val) FIELD_PREP(STEPCONFIG_RFP_VREFP, (val))
-#define STEPCONFIG_INM_MASK GENMASK(18, 15)
-#define STEPCONFIG_INM(val) FIELD_PREP(STEPCONFIG_INM_MASK, (val))
+#define STEPCONFIG_RFP(val) FIELD_PREP(GENMASK(13, 12), (val))
+#define STEPCONFIG_RFP_VREFP STEPCONFIG_RFP(3)
+#define STEPCONFIG_INM(val) FIELD_PREP(GENMASK(18, 15), (val))
#define STEPCONFIG_INM_ADCREFM STEPCONFIG_INM(8)
-#define STEPCONFIG_INP_MASK GENMASK(22, 19)
-#define STEPCONFIG_INP(val) FIELD_PREP(STEPCONFIG_INP_MASK, (val))
+#define STEPCONFIG_INP(val) FIELD_PREP(GENMASK(22, 19), (val))
#define STEPCONFIG_INP_AN4 STEPCONFIG_INP(4)
#define STEPCONFIG_INP_ADCREFM STEPCONFIG_INP(8)
#define STEPCONFIG_FIFO1 BIT(26)
-#define STEPCONFIG_RFM_VREFN GENMASK(24, 23)
-#define STEPCONFIG_RFM(val) FIELD_PREP(STEPCONFIG_RFM_VREFN, (val))
+#define STEPCONFIG_RFM(val) FIELD_PREP(GENMASK(24, 23), (val))
+#define STEPCONFIG_RFM_VREFN STEPCONFIG_RFM(3)

/* Delay register */
-#define STEPDELAY_OPEN_MASK GENMASK(17, 0)
-#define STEPDELAY_OPEN(val) FIELD_PREP(STEPDELAY_OPEN_MASK, (val))
+#define STEPDELAY_OPEN(val) FIELD_PREP(GENMASK(17, 0), (val))
#define STEPCONFIG_OPENDLY STEPDELAY_OPEN(0x098)
-#define STEPDELAY_SAMPLE_MASK GENMASK(31, 24)
-#define STEPDELAY_SAMPLE(val) FIELD_PREP(STEPDELAY_SAMPLE_MASK, (val))
#define STEPCONFIG_MAX_OPENDLY GENMASK(17, 0)
+#define STEPDELAY_SAMPLE(val) FIELD_PREP(GENMASK(31, 24), (val))
#define STEPCONFIG_SAMPLEDLY STEPDELAY_SAMPLE(0)
#define STEPCONFIG_MAX_SAMPLE GENMASK(7, 0)

/* Charge Config */
-#define STEPCHARGE_RFP_MASK GENMASK(14, 12)
-#define STEPCHARGE_RFP(val) FIELD_PREP(STEPCHARGE_RFP_MASK, (val))
+#define STEPCHARGE_RFP(val) FIELD_PREP(GENMASK(14, 12), (val))
#define STEPCHARGE_RFP_XPUL STEPCHARGE_RFP(1)
-#define STEPCHARGE_INM_MASK GENMASK(18, 15)
-#define STEPCHARGE_INM(val) FIELD_PREP(STEPCHARGE_INM_MASK, (val))
+#define STEPCHARGE_INM(val) FIELD_PREP(GENMASK(18, 15), (val))
#define STEPCHARGE_INM_AN1 STEPCHARGE_INM(1)
-#define STEPCHARGE_INP_MASK GENMASK(22, 19)
-#define STEPCHARGE_INP(val) FIELD_PREP(STEPCHARGE_INP_MASK, (val))
-#define STEPCHARGE_RFM_MASK GENMASK(24, 23)
-#define STEPCHARGE_RFM(val) FIELD_PREP(STEPCHARGE_RFM_MASK, (val))
+#define STEPCHARGE_INP(val) FIELD_PREP(GENMASK(22, 19), (val))
+#define STEPCHARGE_RFM(val) FIELD_PREP(GENMASK(24, 23), (val))
#define STEPCHARGE_RFM_XNUR STEPCHARGE_RFM(1)

/* Charge delay */
-#define CHARGEDLY_OPEN_MASK GENMASK(17, 0)
-#define CHARGEDLY_OPEN(val) FIELD_PREP(CHARGEDLY_OPEN_MASK, (val))
+#define CHARGEDLY_OPEN(val) FIELD_PREP(GENMASK(17, 0), (val))
#define CHARGEDLY_OPENDLY CHARGEDLY_OPEN(0x400)

/* Control register */
@@ -111,8 +100,7 @@
#define CNTRLREG_STEPID BIT(1)
#define CNTRLREG_STEPCONFIGWRT BIT(2)
#define CNTRLREG_POWERDOWN BIT(4)
-#define CNTRLREG_AFE_CTRL_MASK GENMASK(6, 5)
-#define CNTRLREG_AFE_CTRL(val) FIELD_PREP(CNTRLREG_AFE_CTRL_MASK, (val))
+#define CNTRLREG_AFE_CTRL(val) FIELD_PREP(GENMASK(6, 5), (val))
#define CNTRLREG_4WIRE CNTRLREG_AFE_CTRL(1)
#define CNTRLREG_5WIRE CNTRLREG_AFE_CTRL(2)
#define CNTRLREG_8WIRE CNTRLREG_AFE_CTRL(3)
--
2.27.0