drivers/clk/clk-max77686.c

   1 /*
   2  * clk-max77686.c - Clock driver for Maxim 77686
   3  *
   4  * Copyright (C) 2012 Samsung Electornics
   5  * Jonghwa Lee <jonghwa3.lee@samsung.com>
   6  *
   7  * This program is free software; you can redistribute  it and/or modify it
   8  * under  the terms of  the GNU General  Public License as published by the
   9  * Free Software Foundation;  either version 2 of the  License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/slab.h>
  25 #include <linux/err.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/mfd/max77686.h>
  28 #include <linux/mfd/max77686-private.h>
  29 #include <linux/clk-provider.h>
  30 #include <linux/mutex.h>
  31 #include <linux/clkdev.h>
  32
  33 #include <dt-bindings/clock/maxim,max77686.h>
  34 #include "clk-max-gen.h"
  35
  36 static struct clk_init_data max77686_clks_init[MAX77686_CLKS_NUM] = {
  37         [MAX77686_CLK_AP] = {
  38                 .name = "32khz_ap",
  39                 .ops = &max_gen_clk_ops,
  40                 .flags = CLK_IS_ROOT,
  41         },
  42         [MAX77686_CLK_CP] = {
  43                 .name = "32khz_cp",
  44                 .ops = &max_gen_clk_ops,
  45                 .flags = CLK_IS_ROOT,
  46         },
  47         [MAX77686_CLK_PMIC] = {
  48                 .name = "32khz_pmic",
  49                 .ops = &max_gen_clk_ops,
  50                 .flags = CLK_IS_ROOT,
  51         },
  52 };
  53
  54 static int max77686_clk_probe(struct platform_device *pdev)
  55 {
  56         struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
  57
  58         return max_gen_clk_probe(pdev, iodev->regmap, MAX77686_REG_32KHZ,
  59                                  max77686_clks_init, MAX77686_CLKS_NUM);
  60 }
  61
  62 static int max77686_clk_remove(struct platform_device *pdev)
  63 {
  64         return max_gen_clk_remove(pdev, MAX77686_CLKS_NUM);
  65 }
  66
  67 static const struct platform_device_id max77686_clk_id[] = {
  68         { "max77686-clk", 0},
  69         { },
  70 };
  71 MODULE_DEVICE_TABLE(platform, max77686_clk_id);
  72
  73 static struct platform_driver max77686_clk_driver = {
  74         .driver = {
  75                 .name  = "max77686-clk",
  76         },
  77         .probe = max77686_clk_probe,
  78         .remove = max77686_clk_remove,
  79         .id_table = max77686_clk_id,
  80 };
  81
  82 module_platform_driver(max77686_clk_driver);
  83
  84 MODULE_DESCRIPTION("MAXIM 77686 Clock Driver");
  85 MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
  86 MODULE_LICENSE("GPL");