diff options
Diffstat (limited to 'drivers/clk/renesas/clk-r8a7740.c')
| -rw-r--r-- | drivers/clk/renesas/clk-r8a7740.c | 59 |
1 files changed, 27 insertions, 32 deletions
diff --git a/drivers/clk/renesas/clk-r8a7740.c b/drivers/clk/renesas/clk-r8a7740.c index 2f7ce6696b6c..22e9be7240bb 100644 --- a/drivers/clk/renesas/clk-r8a7740.c +++ b/drivers/clk/renesas/clk-r8a7740.c @@ -1,16 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 /* * r8a7740 Core CPG Clocks * * Copyright (C) 2014 Ulrich Hecht - * - * 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; version 2 of the License. */ #include <linux/clk-provider.h> #include <linux/clk/renesas.h> #include <linux/init.h> +#include <linux/io.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/of.h> @@ -20,7 +18,6 @@ struct r8a7740_cpg { struct clk_onecell_data data; spinlock_t lock; - void __iomem *reg; }; #define CPG_FRQCRA 0x00 @@ -29,28 +26,25 @@ struct r8a7740_cpg { #define CPG_USBCKCR 0x8c #define CPG_FRQCRC 0xe0 -#define CLK_ENABLE_ON_INIT BIT(0) - struct div4_clk { const char *name; unsigned int reg; unsigned int shift; - int flags; }; static struct div4_clk div4_clks[] = { - { "i", CPG_FRQCRA, 20, CLK_ENABLE_ON_INIT }, - { "zg", CPG_FRQCRA, 16, CLK_ENABLE_ON_INIT }, - { "b", CPG_FRQCRA, 8, CLK_ENABLE_ON_INIT }, - { "m1", CPG_FRQCRA, 4, CLK_ENABLE_ON_INIT }, - { "hp", CPG_FRQCRB, 4, 0 }, - { "hpp", CPG_FRQCRC, 20, 0 }, - { "usbp", CPG_FRQCRC, 16, 0 }, - { "s", CPG_FRQCRC, 12, 0 }, - { "zb", CPG_FRQCRC, 8, 0 }, - { "m3", CPG_FRQCRC, 4, 0 }, - { "cp", CPG_FRQCRC, 0, 0 }, - { NULL, 0, 0, 0 }, + { "i", CPG_FRQCRA, 20 }, + { "zg", CPG_FRQCRA, 16 }, + { "b", CPG_FRQCRA, 8 }, + { "m1", CPG_FRQCRA, 4 }, + { "hp", CPG_FRQCRB, 4 }, + { "hpp", CPG_FRQCRC, 20 }, + { "usbp", CPG_FRQCRC, 16 }, + { "s", CPG_FRQCRC, 12 }, + { "zb", CPG_FRQCRC, 8 }, + { "m3", CPG_FRQCRC, 4 }, + { "cp", CPG_FRQCRC, 0 }, + { NULL, 0, 0 }, }; static const struct clk_div_table div4_div_table[] = { @@ -63,7 +57,7 @@ static u32 cpg_mode __initdata; static struct clk * __init r8a7740_cpg_register_clock(struct device_node *np, struct r8a7740_cpg *cpg, - const char *name) + void __iomem *base, const char *name) { const struct clk_div_table *table = NULL; const char *parent_name; @@ -98,20 +92,20 @@ r8a7740_cpg_register_clock(struct device_node *np, struct r8a7740_cpg *cpg, * clock implementation and we currently have no need to change * the multiplier value. */ - u32 value = clk_readl(cpg->reg + CPG_FRQCRC); + u32 value = readl(base + CPG_FRQCRC); parent_name = "system"; mult = ((value >> 24) & 0x7f) + 1; } else if (!strcmp(name, "pllc1")) { - u32 value = clk_readl(cpg->reg + CPG_FRQCRA); + u32 value = readl(base + CPG_FRQCRA); parent_name = "system"; mult = ((value >> 24) & 0x7f) + 1; div = 2; } else if (!strcmp(name, "pllc2")) { - u32 value = clk_readl(cpg->reg + CPG_PLLC2CR); + u32 value = readl(base + CPG_PLLC2CR); parent_name = "system"; mult = ((value >> 24) & 0x3f) + 1; } else if (!strcmp(name, "usb24s")) { - u32 value = clk_readl(cpg->reg + CPG_USBCKCR); + u32 value = readl(base + CPG_USBCKCR); if (value & BIT(7)) /* extal2 */ parent_name = of_clk_get_parent_name(np, 1); @@ -139,7 +133,7 @@ r8a7740_cpg_register_clock(struct device_node *np, struct r8a7740_cpg *cpg, mult, div); } else { return clk_register_divider_table(NULL, name, parent_name, 0, - cpg->reg + reg, shift, 4, 0, + base + reg, shift, 4, 0, table, &cpg->lock); } } @@ -147,6 +141,7 @@ r8a7740_cpg_register_clock(struct device_node *np, struct r8a7740_cpg *cpg, static void __init r8a7740_cpg_clocks_init(struct device_node *np) { struct r8a7740_cpg *cpg; + void __iomem *base; struct clk **clks; unsigned int i; int num_clks; @@ -161,7 +156,7 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np) } cpg = kzalloc(sizeof(*cpg), GFP_KERNEL); - clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL); + clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL); if (cpg == NULL || clks == NULL) { /* We're leaking memory on purpose, there's no point in cleaning * up as the system won't boot anyway. @@ -174,8 +169,8 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np) cpg->data.clks = clks; cpg->data.clk_num = num_clks; - cpg->reg = of_iomap(np, 0); - if (WARN_ON(cpg->reg == NULL)) + base = of_iomap(np, 0); + if (WARN_ON(base == NULL)) return; for (i = 0; i < num_clks; ++i) { @@ -185,10 +180,10 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np) of_property_read_string_index(np, "clock-output-names", i, &name); - clk = r8a7740_cpg_register_clock(np, cpg, name); + clk = r8a7740_cpg_register_clock(np, cpg, base, name); if (IS_ERR(clk)) - pr_err("%s: failed to register %s %s clock (%ld)\n", - __func__, np->name, name, PTR_ERR(clk)); + pr_err("%s: failed to register %pOFn %s clock (%ld)\n", + __func__, np, name, PTR_ERR(clk)); else cpg->data.clks[i] = clk; } |