[PATCH v5 2/8] clk: mmp: switch to GENMASK()

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

Convert the code to use GENMASK() helper instead of custom approach.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/clk/mmp/clk-mix.c | 2 +-
 drivers/clk/mmp/clk.h     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/mmp/clk-mix.c b/drivers/clk/mmp/clk-mix.c
index 7a37432..1ff85d7c 100644
--- a/drivers/clk/mmp/clk-mix.c
+++ b/drivers/clk/mmp/clk-mix.c
@@ -26,7 +26,7 @@
 
 static unsigned int _get_maxdiv(struct mmp_clk_mix *mix)
 {
-	unsigned int div_mask = (1 << mix->reg_info.width_div) - 1;
+	unsigned int div_mask = GENMASK(mix->reg_info.width_div - 1, 0);
 	unsigned int maxdiv = 0;
 	struct clk_div_table *clkt;
 
diff --git a/drivers/clk/mmp/clk.h b/drivers/clk/mmp/clk.h
index adf9b71..f5fdb0e 100644
--- a/drivers/clk/mmp/clk.h
+++ b/drivers/clk/mmp/clk.h
@@ -39,7 +39,7 @@ extern struct clk *mmp_clk_register_factor(const char *name,
 
 /* Clock type "mix" */
 #define MMP_CLK_BITS_MASK(width, shift)			\
-		(((1 << (width)) - 1) << (shift))
+		(GENMASK((width) - 1, 0) << (shift))
 #define MMP_CLK_BITS_GET_VAL(data, width, shift)	\
 		((data & MMP_CLK_BITS_MASK(width, shift)) >> (shift))
 #define MMP_CLK_BITS_SET_VAL(val, width, shift)		\
-- 
2.1.4