linux-kernel - [PATCH 12/12] clk: mediatek: limit en_mask to a pure div_en

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Date:   Thu, 22 Oct 2020 20:56:05 +0800
From:   Weiyi Lu <weiyi.lu@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-clk@...r.kernel.org>,
        <srv_heupstream@...iatek.com>, Weiyi Lu <weiyi.lu@...iatek.com>
Subject: [PATCH 12/12] clk: mediatek: limit en_mask to a pure div_en_mask

Because all pll data has been updated. We no longer allow
en_mask is a combination of pll_en_bit and div_en_mask.

Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>
---
 drivers/clk/mediatek/clk-pll.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index 11ed5d1..e0b00bc 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -238,7 +238,6 @@ static int mtk_pll_prepare(struct clk_hw *hw)
 {
 	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
 	u32 r;
-	u32 div_en_mask;
 
 	r = readl(pll->pwr_addr) | CON0_PWR_ON;
 	writel(r, pll->pwr_addr);
@@ -251,9 +250,8 @@ static int mtk_pll_prepare(struct clk_hw *hw)
 	r = readl(pll->base_addr + REG_CON0) | CON0_BASE_EN;
 	writel(r, pll->base_addr + REG_CON0);
 
-	div_en_mask = pll->data->en_mask & ~CON0_BASE_EN;
-	if (div_en_mask) {
-		r = readl(pll->base_addr + REG_CON0) | div_en_mask;
+	if (pll->data->en_mask) {
+		r = readl(pll->base_addr + REG_CON0) | pll->data->en_mask;
 		writel(r, pll->base_addr + REG_CON0);
 	}
 
@@ -274,7 +272,6 @@ static void mtk_pll_unprepare(struct clk_hw *hw)
 {
 	struct mtk_clk_pll *pll = to_mtk_clk_pll(hw);
 	u32 r;
-	u32 div_en_mask;
 
 	if (pll->data->flags & HAVE_RST_BAR) {
 		r = readl(pll->base_addr + REG_CON0);
@@ -284,9 +281,8 @@ static void mtk_pll_unprepare(struct clk_hw *hw)
 
 	__mtk_pll_tuner_disable(pll);
 
-	div_en_mask = pll->data->en_mask & ~CON0_BASE_EN;
-	if (div_en_mask) {
-		r = readl(pll->base_addr + REG_CON0) & ~div_en_mask;
+	if (pll->data->en_mask) {
+		r = readl(pll->base_addr + REG_CON0) & ~pll->data->en_mask;
 		writel(r, pll->base_addr + REG_CON0);
 	}
 
-- 
1.8.1.1.dirty