diff options
Diffstat (limited to 'drivers/clk/clk-s2mps11.c')
| -rw-r--r-- | drivers/clk/clk-s2mps11.c | 93 |
1 files changed, 52 insertions, 41 deletions
diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c index fbaa84a33c46..ff7ce12a5da6 100644 --- a/drivers/clk/clk-s2mps11.c +++ b/drivers/clk/clk-s2mps11.c @@ -1,19 +1,8 @@ -/* - * clk-s2mps11.c - Clock driver for S2MPS11. - * - * Copyright (C) 2013,2014 Samsung Electornics - * - * 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+ +// +// clk-s2mps11.c - Clock driver for S2MPS11. +// +// Copyright (C) 2013,2014 Samsung Electornics #include <linux/module.h> #include <linux/err.h> @@ -22,18 +11,14 @@ #include <linux/regmap.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> +#include <linux/mfd/samsung/s2mpg10.h> #include <linux/mfd/samsung/s2mps11.h> #include <linux/mfd/samsung/s2mps13.h> #include <linux/mfd/samsung/s2mps14.h> #include <linux/mfd/samsung/s5m8767.h> #include <linux/mfd/samsung/core.h> -enum { - S2MPS11_CLK_AP = 0, - S2MPS11_CLK_CP, - S2MPS11_CLK_BT, - S2MPS11_CLKS_NUM, -}; +#include <dt-bindings/clock/samsung,s2mps11.h> struct s2mps11_clk { struct sec_pmic_dev *iodev; @@ -87,7 +72,7 @@ static unsigned long s2mps11_clk_recalc_rate(struct clk_hw *hw, return 32768; } -static struct clk_ops s2mps11_clk_ops = { +static const struct clk_ops s2mps11_clk_ops = { .prepare = s2mps11_clk_prepare, .unprepare = s2mps11_clk_unprepare, .is_prepared = s2mps11_clk_is_prepared, @@ -147,13 +132,18 @@ static int s2mps11_clk_probe(struct platform_device *pdev) if (!s2mps11_clks) return -ENOMEM; - clk_data = devm_kzalloc(&pdev->dev, sizeof(*clk_data) + - sizeof(*clk_data->hws) * S2MPS11_CLKS_NUM, + clk_data = devm_kzalloc(&pdev->dev, + struct_size(clk_data, hws, S2MPS11_CLKS_NUM), GFP_KERNEL); if (!clk_data) return -ENOMEM; + clk_data->num = S2MPS11_CLKS_NUM; + switch (hwid) { + case S2MPG10: + s2mps11_reg = S2MPG10_PMIC_RTCBUF; + break; case S2MPS11X: s2mps11_reg = S2MPS11_REG_RTC_CTRL; break; @@ -202,7 +192,6 @@ static int s2mps11_clk_probe(struct platform_device *pdev) clk_data->hws[i] = &s2mps11_clks[i].hw; } - clk_data->num = S2MPS11_CLKS_NUM; of_clk_add_hw_provider(s2mps11_clks->clk_np, of_clk_hw_onecell_get, clk_data); @@ -211,13 +200,14 @@ static int s2mps11_clk_probe(struct platform_device *pdev) return ret; err_reg: + of_node_put(s2mps11_clks[0].clk_np); while (--i >= 0) clkdev_drop(s2mps11_clks[i].lookup); return ret; } -static int s2mps11_clk_remove(struct platform_device *pdev) +static void s2mps11_clk_remove(struct platform_device *pdev) { struct s2mps11_clk *s2mps11_clks = platform_get_drvdata(pdev); int i; @@ -232,11 +222,10 @@ static int s2mps11_clk_remove(struct platform_device *pdev) continue; clkdev_drop(s2mps11_clks[i].lookup); } - - return 0; } static const struct platform_device_id s2mps11_clk_id[] = { + { "s2mpg10-clk", S2MPG10}, { "s2mps11-clk", S2MPS11X}, { "s2mps13-clk", S2MPS13X}, { "s2mps14-clk", S2MPS14X}, @@ -245,6 +234,39 @@ static const struct platform_device_id s2mps11_clk_id[] = { }; MODULE_DEVICE_TABLE(platform, s2mps11_clk_id); +#ifdef CONFIG_OF +/* + * Device is instantiated through parent MFD device and device matching is done + * through platform_device_id. + * + * However if device's DT node contains proper clock compatible and driver is + * built as a module, then the *module* matching will be done through DT aliases. + * This requires of_device_id table. In the same time this will not change the + * actual *device* matching so do not add .of_match_table. + */ +static const struct of_device_id s2mps11_dt_match[] __used = { + { + .compatible = "samsung,s2mpg10-clk", + .data = (void *)S2MPG10, + }, { + .compatible = "samsung,s2mps11-clk", + .data = (void *)S2MPS11X, + }, { + .compatible = "samsung,s2mps13-clk", + .data = (void *)S2MPS13X, + }, { + .compatible = "samsung,s2mps14-clk", + .data = (void *)S2MPS14X, + }, { + .compatible = "samsung,s5m8767-clk", + .data = (void *)S5M8767X, + }, { + /* Sentinel */ + }, +}; +MODULE_DEVICE_TABLE(of, s2mps11_dt_match); +#endif + static struct platform_driver s2mps11_clk_driver = { .driver = { .name = "s2mps11-clk", @@ -253,18 +275,7 @@ static struct platform_driver s2mps11_clk_driver = { .remove = s2mps11_clk_remove, .id_table = s2mps11_clk_id, }; - -static int __init s2mps11_clk_init(void) -{ - return platform_driver_register(&s2mps11_clk_driver); -} -subsys_initcall(s2mps11_clk_init); - -static void __exit s2mps11_clk_cleanup(void) -{ - platform_driver_unregister(&s2mps11_clk_driver); -} -module_exit(s2mps11_clk_cleanup); +module_platform_driver(s2mps11_clk_driver); MODULE_DESCRIPTION("S2MPS11 Clock Driver"); MODULE_AUTHOR("Yadwinder Singh Brar <yadi.brar@samsung.com>"); |