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/module.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/mfd/max77686.h>
  29 #include <linux/mfd/max77686-private.h>
  30 #include <linux/clk-provider.h>
  31 #include <linux/mutex.h>
  32 #include <linux/clkdev.h>
  33
  34 #include <dt-bindings/clock/maxim,max77686.h>
  35 #include "clk-max-gen.h"
  36
  37 static struct clk_init_data max77686_clks_init[MAX77686_CLKS_NUM] = {
  38         [MAX77686_CLK_AP] = {
  39                 .name = "32khz_ap",
  40                 .ops = &max_gen_clk_ops,
  41                 .flags = CLK_IS_ROOT,
  42         },
  43         [MAX77686_CLK_CP] = {
  44                 .name = "32khz_cp",
  45                 .ops = &max_gen_clk_ops,
  46                 .flags = CLK_IS_ROOT,
  47         },
  48         [MAX77686_CLK_PMIC] = {
  49                 .name = "32khz_pmic",
  50                 .ops = &max_gen_clk_ops,
  51                 .flags = CLK_IS_ROOT,
  52         },
  53 };
  54
  55 static int max77686_clk_probe(struct platform_device *pdev)
  56 {
  57         struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
  58
  59         return max_gen_clk_probe(pdev, iodev->regmap, MAX77686_REG_32KHZ,
  60                                  max77686_clks_init, MAX77686_CLKS_NUM);
  61 }
  62
  63 static int max77686_clk_remove(struct platform_device *pdev)
  64 {
  65         return max_gen_clk_remove(pdev, MAX77686_CLKS_NUM);
  66 }
  67
  68 static const struct platform_device_id max77686_clk_id[] = {
  69         { "max77686-clk", 0},
  70         { },
  71 };
  72 MODULE_DEVICE_TABLE(platform, max77686_clk_id);
  73
  74 static struct platform_driver max77686_clk_driver = {
  75         .driver = {
  76                 .name  = "max77686-clk",
  77         },
  78         .probe = max77686_clk_probe,
  79         .remove = max77686_clk_remove,
  80         .id_table = max77686_clk_id,
  81 };
  82
  83 module_platform_driver(max77686_clk_driver);
  84
  85 MODULE_DESCRIPTION("MAXIM 77686 Clock Driver");
  86 MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
  87 MODULE_LICENSE("GPL");