diff options
Diffstat (limited to 'drivers/clk/socfpga/clk-pll.c')
| -rw-r--r-- | drivers/clk/socfpga/clk-pll.c | 55 |
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) |
