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path: root/drivers/clk/imx/clk-pllv1.c
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Diffstat (limited to 'drivers/clk/imx/clk-pllv1.c')
-rw-r--r--drivers/clk/imx/clk-pllv1.c45
1 files changed, 22 insertions, 23 deletions
diff --git a/drivers/clk/imx/clk-pllv1.c b/drivers/clk/imx/clk-pllv1.c
index f992134f7e..62afa2b6b2 100644
--- a/drivers/clk/imx/clk-pllv1.c
+++ b/drivers/clk/imx/clk-pllv1.c
@@ -1,15 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
+// SPDX-License-Identifier: GPL-2.0-or-later
+
#include <common.h>
#include <init.h>
#include <driver.h>
@@ -18,20 +8,29 @@
#include <linux/clkdev.h>
#include <linux/err.h>
#include <malloc.h>
-#include <asm-generic/div64.h>
+#include <linux/math64.h>
#include "clk.h"
+#define MFN_BITS (10)
+#define MFN_SIGN (BIT(MFN_BITS - 1))
+#define MFN_MASK (MFN_SIGN - 1)
+
struct clk_pllv1 {
- struct clk clk;
+ struct clk_hw hw;
void __iomem *reg;
const char *parent;
};
-static unsigned long clk_pllv1_recalc_rate(struct clk *clk,
+static inline bool mfn_is_negative(unsigned int mfn)
+{
+ return mfn & MFN_SIGN;
+}
+
+static unsigned long clk_pllv1_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
- struct clk_pllv1 *pll = container_of(clk, struct clk_pllv1, clk);
+ struct clk_pllv1 *pll = container_of(hw, struct clk_pllv1, hw);
unsigned long long ll;
int mfn_abs;
unsigned int mfi, mfn, mfd, pd;
@@ -60,7 +59,7 @@ static unsigned long clk_pllv1_recalc_rate(struct clk *clk,
ll = (unsigned long long)freq * mfn_abs;
do_div(ll, mfd + 1);
- if (mfn < 0)
+ if (mfn_is_negative(mfn))
ll = (freq * mfi) - ll;
else
ll = (freq * mfi) + ll;
@@ -80,16 +79,16 @@ struct clk *imx_clk_pllv1(const char *name, const char *parent,
pll->parent = parent;
pll->reg = base;
- pll->clk.ops = &clk_pllv1_ops;
- pll->clk.name = name;
- pll->clk.parent_names = &pll->parent;
- pll->clk.num_parents = 1;
+ pll->hw.clk.ops = &clk_pllv1_ops;
+ pll->hw.clk.name = name;
+ pll->hw.clk.parent_names = &pll->parent;
+ pll->hw.clk.num_parents = 1;
- ret = clk_register(&pll->clk);
+ ret = bclk_register(&pll->hw.clk);
if (ret) {
free(pll);
return ERR_PTR(ret);
}
- return &pll->clk;
+ return &pll->hw.clk;
}