linux-kernel - [PATCH v2 06/14] clk: imx: pllv4: use prepare/unprepare

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Date:   Wed, 19 Feb 2020 15:59:49 +0800
From:   peng.fan@....com
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, sboyd@...nel.org,
        robh+dt@...nel.org, viresh.kumar@...aro.org, rjw@...ysocki.net
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        Anson.Huang@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, abel.vesa@....com,
        Peng Fan <peng.fan@....com>
Subject: [PATCH v2 06/14] clk: imx: pllv4: use prepare/unprepare

From: Peng Fan <peng.fan@....com>

It is not good to use enable/disable for PLLv4 which needs time to
lock, because enable/disable is expected to be able run in
interrupt context. So use prepare/unprepare.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/clk/imx/clk-pllv4.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/imx/clk-pllv4.c b/drivers/clk/imx/clk-pllv4.c
index f51a800c268c..a49450431855 100644
--- a/drivers/clk/imx/clk-pllv4.c
+++ b/drivers/clk/imx/clk-pllv4.c
@@ -54,7 +54,7 @@ static inline int clk_pllv4_wait_lock(struct clk_pllv4 *pll)
 				  csr, csr & PLL_VLD, 0, LOCK_TIMEOUT_US);
 }
 
-static int clk_pllv4_is_enabled(struct clk_hw *hw)
+static int clk_pllv4_is_prepared(struct clk_hw *hw)
 {
 	struct clk_pllv4 *pll = to_clk_pllv4(hw);
 
@@ -175,7 +175,7 @@ static int clk_pllv4_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static int clk_pllv4_enable(struct clk_hw *hw)
+static int clk_pllv4_prepare(struct clk_hw *hw)
 {
 	u32 val;
 	struct clk_pllv4 *pll = to_clk_pllv4(hw);
@@ -187,7 +187,7 @@ static int clk_pllv4_enable(struct clk_hw *hw)
 	return clk_pllv4_wait_lock(pll);
 }
 
-static void clk_pllv4_disable(struct clk_hw *hw)
+static void clk_pllv4_unprepare(struct clk_hw *hw)
 {
 	u32 val;
 	struct clk_pllv4 *pll = to_clk_pllv4(hw);
@@ -201,9 +201,9 @@ static const struct clk_ops clk_pllv4_ops = {
 	.recalc_rate	= clk_pllv4_recalc_rate,
 	.round_rate	= clk_pllv4_round_rate,
 	.set_rate	= clk_pllv4_set_rate,
-	.enable		= clk_pllv4_enable,
-	.disable	= clk_pllv4_disable,
-	.is_enabled	= clk_pllv4_is_enabled,
+	.prepare	= clk_pllv4_prepare,
+	.unprepare	= clk_pllv4_unprepare,
+	.is_prepared	= clk_pllv4_is_prepared,
 };
 
 struct clk_hw *imx_clk_hw_pllv4(const char *name, const char *parent_name,
-- 
2.16.4