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clocksource/drivers/ingenic: Use bitfield macro helpers 

Use "FIELD_GET()" and "FIELD_PREP()" to simplify the code.

[dlezcano] : Changed title

Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1627638188-116163-1-git-send-email-zhouyanjie@wanyeetech.com
This commit is contained in:
周琰杰 (Zhou Yanjie) 2021-07-30 17:43:08 +08:00 committed by Daniel Lezcano
parent be83c3b6e7
commit 3b87265d82
1 changed files with 7 additions and 6 deletions
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13
drivers/clocksource/ingenic-sysost.c
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@ -4,6 +4,7 @@
* Copyright (c) 2020 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
*/
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
@ -34,8 +35,6 @@
/* bits within the OSTCCR register */
#define OSTCCR_PRESCALE1_MASK 0x3
#define OSTCCR_PRESCALE2_MASK 0xc
#define OSTCCR_PRESCALE1_LSB 0
#define OSTCCR_PRESCALE2_LSB 2
/* bits within the OSTCR register */
#define OSTCR_OST1CLR BIT(0)
@ -98,7 +97,7 @@ static unsigned long ingenic_ost_percpu_timer_recalc_rate(struct clk_hw *hw,
prescale = readl(ost_clk->ost->base + info->ostccr_reg);
prescale = (prescale & OSTCCR_PRESCALE1_MASK) >> OSTCCR_PRESCALE1_LSB;
prescale = FIELD_GET(OSTCCR_PRESCALE1_MASK, prescale);
return parent_rate >> (prescale * 2);
}
@ -112,7 +111,7 @@ static unsigned long ingenic_ost_global_timer_recalc_rate(struct clk_hw *hw,
prescale = readl(ost_clk->ost->base + info->ostccr_reg);
prescale = (prescale & OSTCCR_PRESCALE2_MASK) >> OSTCCR_PRESCALE2_LSB;
prescale = FIELD_GET(OSTCCR_PRESCALE2_MASK, prescale);
return parent_rate >> (prescale * 2);
}
@ -151,7 +150,8 @@ static int ingenic_ost_percpu_timer_set_rate(struct clk_hw *hw, unsigned long re
int val;
val = readl(ost_clk->ost->base + info->ostccr_reg);
val = (val & ~OSTCCR_PRESCALE1_MASK) | (prescale << OSTCCR_PRESCALE1_LSB);
val &= ~OSTCCR_PRESCALE1_MASK;
val |= FIELD_PREP(OSTCCR_PRESCALE1_MASK, prescale);
writel(val, ost_clk->ost->base + info->ostccr_reg);
return 0;
@ -166,7 +166,8 @@ static int ingenic_ost_global_timer_set_rate(struct clk_hw *hw, unsigned long re
int val;
val = readl(ost_clk->ost->base + info->ostccr_reg);
val = (val & ~OSTCCR_PRESCALE2_MASK) | (prescale << OSTCCR_PRESCALE2_LSB);
val &= ~OSTCCR_PRESCALE2_MASK;
val |= FIELD_PREP(OSTCCR_PRESCALE2_MASK, prescale);
writel(val, ost_clk->ost->base + info->ostccr_reg);
return 0;