diff options
Diffstat (limited to 'drivers/clk/clk-max77686.c')
| -rw-r--r-- | drivers/clk/clk-max77686.c | 184 |
1 files changed, 9 insertions, 175 deletions
diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c index 3d7e8dd8fd58..86cdb3a28629 100644 --- a/drivers/clk/clk-max77686.c +++ b/drivers/clk/clk-max77686.c @@ -30,193 +30,38 @@ #include <linux/mutex.h> #include <linux/clkdev.h> -enum { - MAX77686_CLK_AP = 0, - MAX77686_CLK_CP, - MAX77686_CLK_PMIC, - MAX77686_CLKS_NUM, -}; - -struct max77686_clk { - struct max77686_dev *iodev; - u32 mask; - struct clk_hw hw; - struct clk_lookup *lookup; -}; - -static struct max77686_clk *to_max77686_clk(struct clk_hw *hw) -{ - return container_of(hw, struct max77686_clk, hw); -} - -static int max77686_clk_prepare(struct clk_hw *hw) -{ - struct max77686_clk *max77686 = to_max77686_clk(hw); - - return regmap_update_bits(max77686->iodev->regmap, - MAX77686_REG_32KHZ, max77686->mask, - max77686->mask); -} - -static void max77686_clk_unprepare(struct clk_hw *hw) -{ - struct max77686_clk *max77686 = to_max77686_clk(hw); - - regmap_update_bits(max77686->iodev->regmap, - MAX77686_REG_32KHZ, max77686->mask, ~max77686->mask); -} - -static int max77686_clk_is_prepared(struct clk_hw *hw) -{ - struct max77686_clk *max77686 = to_max77686_clk(hw); - int ret; - u32 val; - - ret = regmap_read(max77686->iodev->regmap, - MAX77686_REG_32KHZ, &val); - - if (ret < 0) - return -EINVAL; - - return val & max77686->mask; -} - -static unsigned long max77686_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) -{ - return 32768; -} - -static struct clk_ops max77686_clk_ops = { - .prepare = max77686_clk_prepare, - .unprepare = max77686_clk_unprepare, - .is_prepared = max77686_clk_is_prepared, - .recalc_rate = max77686_recalc_rate, -}; +#include <dt-bindings/clock/maxim,max77686.h> +#include "clk-max-gen.h" static struct clk_init_data max77686_clks_init[MAX77686_CLKS_NUM] = { [MAX77686_CLK_AP] = { .name = "32khz_ap", - .ops = &max77686_clk_ops, + .ops = &max_gen_clk_ops, .flags = CLK_IS_ROOT, }, [MAX77686_CLK_CP] = { .name = "32khz_cp", - .ops = &max77686_clk_ops, + .ops = &max_gen_clk_ops, .flags = CLK_IS_ROOT, }, [MAX77686_CLK_PMIC] = { .name = "32khz_pmic", - .ops = &max77686_clk_ops, + .ops = &max_gen_clk_ops, .flags = CLK_IS_ROOT, }, }; -static struct clk *max77686_clk_register(struct device *dev, - struct max77686_clk *max77686) -{ - struct clk *clk; - struct clk_hw *hw = &max77686->hw; - - clk = clk_register(dev, hw); - if (IS_ERR(clk)) - return clk; - - max77686->lookup = kzalloc(sizeof(struct clk_lookup), GFP_KERNEL); - if (!max77686->lookup) - return ERR_PTR(-ENOMEM); - - max77686->lookup->con_id = hw->init->name; - max77686->lookup->clk = clk; - - clkdev_add(max77686->lookup); - - return clk; -} - static int max77686_clk_probe(struct platform_device *pdev) { struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct max77686_clk *max77686_clks[MAX77686_CLKS_NUM]; - struct clk **clocks; - int i, ret; - - clocks = devm_kzalloc(&pdev->dev, sizeof(struct clk *) - * MAX77686_CLKS_NUM, GFP_KERNEL); - if (!clocks) - return -ENOMEM; - - for (i = 0; i < MAX77686_CLKS_NUM; i++) { - max77686_clks[i] = devm_kzalloc(&pdev->dev, - sizeof(struct max77686_clk), GFP_KERNEL); - if (!max77686_clks[i]) - return -ENOMEM; - } - - for (i = 0; i < MAX77686_CLKS_NUM; i++) { - max77686_clks[i]->iodev = iodev; - max77686_clks[i]->mask = 1 << i; - max77686_clks[i]->hw.init = &max77686_clks_init[i]; - - clocks[i] = max77686_clk_register(&pdev->dev, max77686_clks[i]); - if (IS_ERR(clocks[i])) { - ret = PTR_ERR(clocks[i]); - dev_err(&pdev->dev, "failed to register %s\n", - max77686_clks[i]->hw.init->name); - goto err_clocks; - } - } - - platform_set_drvdata(pdev, clocks); - - if (iodev->dev->of_node) { - struct clk_onecell_data *of_data; - of_data = devm_kzalloc(&pdev->dev, - sizeof(*of_data), GFP_KERNEL); - if (!of_data) { - ret = -ENOMEM; - goto err_clocks; - } - - of_data->clks = clocks; - of_data->clk_num = MAX77686_CLKS_NUM; - ret = of_clk_add_provider(iodev->dev->of_node, - of_clk_src_onecell_get, of_data); - if (ret) { - dev_err(&pdev->dev, "failed to register OF clock provider\n"); - goto err_clocks; - } - } - - return 0; - -err_clocks: - for (--i; i >= 0; --i) { - clkdev_drop(max77686_clks[i]->lookup); - clk_unregister(max77686_clks[i]->hw.clk); - } - - return ret; + return max_gen_clk_probe(pdev, iodev->regmap, MAX77686_REG_32KHZ, + max77686_clks_init, MAX77686_CLKS_NUM); } static int max77686_clk_remove(struct platform_device *pdev) { - struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct clk **clocks = platform_get_drvdata(pdev); - int i; - - if (iodev->dev->of_node) - of_clk_del_provider(iodev->dev->of_node); - - for (i = 0; i < MAX77686_CLKS_NUM; i++) { - struct clk_hw *hw = __clk_get_hw(clocks[i]); - struct max77686_clk *max77686 = to_max77686_clk(hw); - - clkdev_drop(max77686->lookup); - clk_unregister(clocks[i]); - } - return 0; + return max_gen_clk_remove(pdev, MAX77686_CLKS_NUM); } static const struct platform_device_id max77686_clk_id[] = { @@ -228,24 +73,13 @@ MODULE_DEVICE_TABLE(platform, max77686_clk_id); static struct platform_driver max77686_clk_driver = { .driver = { .name = "max77686-clk", - .owner = THIS_MODULE, }, .probe = max77686_clk_probe, .remove = max77686_clk_remove, .id_table = max77686_clk_id, }; -static int __init max77686_clk_init(void) -{ - return platform_driver_register(&max77686_clk_driver); -} -subsys_initcall(max77686_clk_init); - -static void __init max77686_clk_cleanup(void) -{ - platform_driver_unregister(&max77686_clk_driver); -} -module_exit(max77686_clk_cleanup); +module_platform_driver(max77686_clk_driver); MODULE_DESCRIPTION("MAXIM 77686 Clock Driver"); MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>"); |