linux-kernel - [PATCH v10 4/8] lib: add linear range index macro

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Message-Id: <16d18d1b789f83dd6f6dcebcd28ac8a2b9ca01de.1662476695.git.chiaen_wu@richtek.com>
Date:   Tue,  6 Sep 2022 16:34:00 +0800
From:   ChiaEn Wu <peterwu.pub@...il.com>
To:     pavel@....cz, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, matthias.bgg@...il.com,
        sre@...nel.org, jic23@...nel.org, lars@...afoo.de,
        broonie@...nel.org, mazziesaccount@...il.com
Cc:     chiaen_wu@...htek.com, alice_chen@...htek.com,
        cy_huang@...htek.com, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-iio@...r.kernel.org,
        szunichen@...il.com
Subject: [PATCH v10 4/8] lib: add linear range index macro

From: ChiaEn Wu <chiaen_wu@...htek.com>

Add linear_range_idx macro for declaring the linear_range struct simply.

Reviewed-by: Matti Vaittinen <mazziesaccount@...il.com>
Signed-off-by: ChiaEn Wu <chiaen_wu@...htek.com>
---
 include/linux/linear_range.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/linear_range.h b/include/linux/linear_range.h
index fd3d0b3..2e4f4c3 100644
--- a/include/linux/linear_range.h
+++ b/include/linux/linear_range.h
@@ -26,6 +26,17 @@ struct linear_range {
 	unsigned int step;
 };
 
+#define LINEAR_RANGE(_min, _min_sel, _max_sel, _step)		\
+	{							\
+		.min = _min,					\
+		.min_sel = _min_sel,				\
+		.max_sel = _max_sel,				\
+		.step = _step,					\
+	}
+
+#define LINEAR_RANGE_IDX(_idx, _min, _min_sel, _max_sel, _step)	\
+	[_idx] = LINEAR_RANGE(_min, _min_sel, _max_sel, _step)
+
 unsigned int linear_range_values_in_range(const struct linear_range *r);
 unsigned int linear_range_values_in_range_array(const struct linear_range *r,
 						int ranges);
-- 
2.7.4