linux-kernel - [PATCH v4 5/6] clk: tegra: switch to GENMASK()

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Message-Id: <1436460234-61425-6-git-send-email-andriy.shevchenko@linux.intel.com>
Date:	Thu,  9 Jul 2015 19:43:53 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-kernel@...r.kernel.org, Sascha Hauer <kernel@...gutronix.de>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	Tero Kristo <t-kristo@...com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v4 5/6] clk: tegra: switch to GENMASK()

Convert the code to use GENMASK() helper instead of div_mask() macro.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/clk/tegra/clk-divider.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/tegra/clk-divider.c b/drivers/clk/tegra/clk-divider.c
index 59a5714..bf7f667 100644
--- a/drivers/clk/tegra/clk-divider.c
+++ b/drivers/clk/tegra/clk-divider.c
@@ -24,9 +24,8 @@
 #include "clk.h"
 
 #define pll_out_override(p) (BIT((p->shift - 6)))
-#define div_mask(d) ((1 << (d->width)) - 1)
 #define get_mul(d) (1 << d->frac_width)
-#define get_max_div(d) div_mask(d)
+#define get_max_div(d) GENMASK(d->width - 1, 0)
 
 #define PERIPH_CLK_UART_DIV_ENB BIT(24)
 
@@ -73,7 +72,7 @@ static unsigned long clk_frac_div_recalc_rate(struct clk_hw *hw,
 	u64 rate = parent_rate;
 
 	reg = readl_relaxed(divider->reg) >> divider->shift;
-	div = reg & div_mask(divider);
+	div = reg & GENMASK(divider->width - 1, 0);
 
 	mul = get_mul(divider);
 	div += mul;
@@ -120,7 +119,7 @@ static int clk_frac_div_set_rate(struct clk_hw *hw, unsigned long rate,
 		spin_lock_irqsave(divider->lock, flags);
 
 	val = readl_relaxed(divider->reg);
-	val &= ~(div_mask(divider) << divider->shift);
+	val &= ~(GENMASK(divider->width - 1, 0) << divider->shift);
 	val |= div << divider->shift;
 
 	if (divider->flags & TEGRA_DIVIDER_UART) {
-- 
2.1.4

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