[PATCH v9 05/10] lib: add linear range index macro

[ChiaEn Wu <peterwu.pub@xxxxxxxxx>]

From: ChiaEn Wu <chiaen_wu@xxxxxxxxxxx>

Add linear_range_idx macro for declaring the linear_range struct simply.

Signed-off-by: ChiaEn Wu <chiaen_wu@xxxxxxxxxxx>
---

v9
- Revise LINEAR_RANGE() and LINEAR_RANGE_IDX()
---
 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