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path: root/drivers/clk/socfpga/clk-pll.c
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Diffstat (limited to 'drivers/clk/socfpga/clk-pll.c')
-rw-r--r--drivers/clk/socfpga/clk-pll.c55
1 files changed, 29 insertions, 26 deletions
diff --git a/drivers/clk/socfpga/clk-pll.c b/drivers/clk/socfpga/clk-pll.c
index c7f463172e4b..03a96139a576 100644
--- a/drivers/clk/socfpga/clk-pll.c
+++ b/drivers/clk/socfpga/clk-pll.c
@@ -1,19 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2011-2012 Calxeda, Inc.
* Copyright (C) 2012-2013 Altera Corporation <www.altera.com>
*
- * 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.
- *
* Based from clk-highbank.c
- *
*/
#include <linux/slab.h>
#include <linux/clk-provider.h>
@@ -49,9 +39,9 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
unsigned long parent_rate)
{
struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
- unsigned long divf, divq, reg;
+ u32 divf, divq, reg;
unsigned long long vco_freq;
- unsigned long bypass;
+ u32 bypass;
reg = readl(socfpgaclk->hw.reg);
bypass = readl(clk_mgr_base_addr + CLKMGR_BYPASS);
@@ -75,16 +65,16 @@ static u8 clk_pll_get_parent(struct clk_hw *hwclk)
CLK_MGR_PLL_CLK_SRC_MASK;
}
-static struct clk_ops clk_pll_ops = {
+static const struct clk_ops clk_pll_ops = {
.recalc_rate = clk_pll_recalc_rate,
.get_parent = clk_pll_get_parent,
};
-static __init struct clk *__socfpga_pll_init(struct device_node *node,
- const struct clk_ops *ops)
+static void __init __socfpga_pll_init(struct device_node *node,
+ const struct clk_ops *ops)
{
u32 reg;
- struct clk *clk;
+ struct clk_hw *hw_clk;
struct socfpga_pll *pll_clk;
const char *clk_name = node->name;
const char *parent_name[SOCFPGA_MAX_PARENTS];
@@ -96,10 +86,11 @@ static __init struct clk *__socfpga_pll_init(struct device_node *node,
pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL);
if (WARN_ON(!pll_clk))
- return NULL;
+ return;
clkmgr_np = of_find_compatible_node(NULL, NULL, "altr,clk-mgr");
clk_mgr_base_addr = of_iomap(clkmgr_np, 0);
+ of_node_put(clkmgr_np);
BUG_ON(!clk_mgr_base_addr);
pll_clk->hw.reg = clk_mgr_base_addr + reg;
@@ -114,16 +105,28 @@ static __init struct clk *__socfpga_pll_init(struct device_node *node,
pll_clk->hw.hw.init = &init;
pll_clk->hw.bit_idx = SOCFPGA_PLL_EXT_ENA;
- clk_pll_ops.enable = clk_gate_ops.enable;
- clk_pll_ops.disable = clk_gate_ops.disable;
- clk = clk_register(NULL, &pll_clk->hw.hw);
- if (WARN_ON(IS_ERR(clk))) {
- kfree(pll_clk);
- return NULL;
+ hw_clk = &pll_clk->hw.hw;
+
+ rc = clk_hw_register(NULL, hw_clk);
+ if (rc) {
+ pr_err("Could not register clock:%s\n", clk_name);
+ goto err_clk_hw_register;
}
- rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
- return clk;
+
+ rc = of_clk_add_hw_provider(node, of_clk_hw_simple_get, hw_clk);
+ if (rc) {
+ pr_err("Could not register clock provider for node:%s\n",
+ clk_name);
+ goto err_of_clk_add_hw_provider;
+ }
+
+ return;
+
+err_of_clk_add_hw_provider:
+ clk_hw_unregister(hw_clk);
+err_clk_hw_register:
+ kfree(pll_clk);
}
void __init socfpga_pll_init(struct device_node *node)