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From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: narmstrong@baylibre.com, jbrunet@baylibre.com,
	linux-amlogic@lists.infradead.org, sboyd@kernel.org
Cc: mturquette@baylibre.com, carlo@caione.org, khilman@baylibre.com,
	linux-clk@vger.kernel.org,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH v2 2/2] clk: meson: meson8b: use the regmap in the internal reset controller
Date: Sat,  1 Sep 2018 18:21:46 +0200	[thread overview]
Message-ID: <20180901162146.5656-3-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20180901162146.5656-1-martin.blumenstingl@googlemail.com>

For now the reset controller was using raw register access because the
early init did not initialize the regmap. However, now that clocks are
initialized early we can simply use the regmap also for the reset
controller.
No functional changes.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/clk/meson/meson8b.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index abdcfe54f6a0..ed1de34fee0e 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -23,7 +23,7 @@ static DEFINE_SPINLOCK(meson_clk_lock);
 
 struct meson8b_clk_reset {
 	struct reset_controller_dev reset;
-	void __iomem *base;
+	struct regmap *regmap;
 };
 
 static const struct pll_params_table sys_pll_params_table[] = {
@@ -1076,7 +1076,6 @@ static int meson8b_clk_reset_update(struct reset_controller_dev *rcdev,
 		container_of(rcdev, struct meson8b_clk_reset, reset);
 	unsigned long flags;
 	const struct meson8b_clk_reset_line *reset;
-	u32 val;
 
 	if (id >= ARRAY_SIZE(meson8b_clk_reset_bits))
 		return -EINVAL;
@@ -1085,12 +1084,12 @@ static int meson8b_clk_reset_update(struct reset_controller_dev *rcdev,
 
 	spin_lock_irqsave(&meson_clk_lock, flags);
 
-	val = readl(meson8b_clk_reset->base + reset->reg);
 	if (assert)
-		val |= BIT(reset->bit_idx);
+		regmap_update_bits(meson8b_clk_reset->regmap, reset->reg,
+				   BIT(reset->bit_idx), BIT(reset->bit_idx));
 	else
-		val &= ~BIT(reset->bit_idx);
-	writel(val, meson8b_clk_reset->base + reset->reg);
+		regmap_update_bits(meson8b_clk_reset->regmap, reset->reg,
+				   BIT(reset->bit_idx), 0);
 
 	spin_unlock_irqrestore(&meson_clk_lock, flags);
 
@@ -1143,7 +1142,7 @@ static void __init meson8b_clkc_init(struct device_node *np)
 		return;
 
 	/* Reset Controller */
-	rstc->base = clk_base;
+	rstc->regmap = map;
 	rstc->reset.ops = &meson8b_clk_reset_ops;
 	rstc->reset.nr_resets = ARRAY_SIZE(meson8b_clk_reset_bits);
 	rstc->reset.of_node = np;
-- 
2.18.0

WARNING: multiple messages have this Message-ID (diff)
From: martin.blumenstingl@googlemail.com (Martin Blumenstingl)
To: linus-amlogic@lists.infradead.org
Subject: [PATCH v2 2/2] clk: meson: meson8b: use the regmap in the internal reset controller
Date: Sat,  1 Sep 2018 18:21:46 +0200	[thread overview]
Message-ID: <20180901162146.5656-3-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20180901162146.5656-1-martin.blumenstingl@googlemail.com>

For now the reset controller was using raw register access because the
early init did not initialize the regmap. However, now that clocks are
initialized early we can simply use the regmap also for the reset
controller.
No functional changes.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/clk/meson/meson8b.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index abdcfe54f6a0..ed1de34fee0e 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -23,7 +23,7 @@ static DEFINE_SPINLOCK(meson_clk_lock);
 
 struct meson8b_clk_reset {
 	struct reset_controller_dev reset;
-	void __iomem *base;
+	struct regmap *regmap;
 };
 
 static const struct pll_params_table sys_pll_params_table[] = {
@@ -1076,7 +1076,6 @@ static int meson8b_clk_reset_update(struct reset_controller_dev *rcdev,
 		container_of(rcdev, struct meson8b_clk_reset, reset);
 	unsigned long flags;
 	const struct meson8b_clk_reset_line *reset;
-	u32 val;
 
 	if (id >= ARRAY_SIZE(meson8b_clk_reset_bits))
 		return -EINVAL;
@@ -1085,12 +1084,12 @@ static int meson8b_clk_reset_update(struct reset_controller_dev *rcdev,
 
 	spin_lock_irqsave(&meson_clk_lock, flags);
 
-	val = readl(meson8b_clk_reset->base + reset->reg);
 	if (assert)
-		val |= BIT(reset->bit_idx);
+		regmap_update_bits(meson8b_clk_reset->regmap, reset->reg,
+				   BIT(reset->bit_idx), BIT(reset->bit_idx));
 	else
-		val &= ~BIT(reset->bit_idx);
-	writel(val, meson8b_clk_reset->base + reset->reg);
+		regmap_update_bits(meson8b_clk_reset->regmap, reset->reg,
+				   BIT(reset->bit_idx), 0);
 
 	spin_unlock_irqrestore(&meson_clk_lock, flags);
 
@@ -1143,7 +1142,7 @@ static void __init meson8b_clkc_init(struct device_node *np)
 		return;
 
 	/* Reset Controller */
-	rstc->base = clk_base;
+	rstc->regmap = map;
 	rstc->reset.ops = &meson8b_clk_reset_ops;
 	rstc->reset.nr_resets = ARRAY_SIZE(meson8b_clk_reset_bits);
 	rstc->reset.of_node = np;
-- 
2.18.0

  parent reply	other threads:[~2018-09-01 16:21 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-01 16:21 [PATCH v2 0/2] meson8b: register the clock controller early Martin Blumenstingl
2018-09-01 16:21 ` Martin Blumenstingl
2018-09-01 16:21 ` [PATCH v2 1/2] clk: meson: " Martin Blumenstingl
2018-09-01 16:21   ` Martin Blumenstingl
2018-09-01 16:21 ` Martin Blumenstingl [this message]
2018-09-01 16:21   ` [PATCH v2 2/2] clk: meson: meson8b: use the regmap in the internal reset controller Martin Blumenstingl
2018-09-26  9:57 ` [PATCH v2 0/2] meson8b: register the clock controller early Jerome Brunet
2018-09-26  9:57   ` Jerome Brunet

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