diff options
Diffstat (limited to 'drivers/clk/exynos/clk.h')
| -rw-r--r-- | drivers/clk/exynos/clk.h | 70 |
1 files changed, 50 insertions, 20 deletions
diff --git a/drivers/clk/exynos/clk.h b/drivers/clk/exynos/clk.h index 91a51b877a6..ed0a395f0f6 100644 --- a/drivers/clk/exynos/clk.h +++ b/drivers/clk/exynos/clk.h @@ -13,6 +13,51 @@ #include <linux/clk-provider.h> #include "clk-pll.h" +#define _SAMSUNG_CLK_OPS(_name, _cmu) \ +static int _name##_of_xlate(struct clk *clk, \ + struct ofnode_phandle_args *args) \ +{ \ + if (args->args_count > 1) { \ + debug("Invalid args_count: %d\n", args->args_count); \ + return -EINVAL; \ + } \ + \ + if (args->args_count) \ + clk->id = SAMSUNG_TO_CLK_ID(_cmu, args->args[0]); \ + else \ + clk->id = 0; \ + \ + return 0; \ +} \ + \ +static const struct clk_ops _name##_clk_ops = { \ + .set_rate = ccf_clk_set_rate, \ + .get_rate = ccf_clk_get_rate, \ + .set_parent = ccf_clk_set_parent, \ + .enable = ccf_clk_enable, \ + .disable = ccf_clk_disable, \ + .of_xlate = _name##_of_xlate, \ +} + +/** + * SAMSUNG_CLK_OPS - Define clock operations structure for specified CMU. + * @name: name of generated structure + * @cmu: CMU index + * + * Like ccf_clk_ops, but with custom .of_xlate callback. + */ +#define SAMSUNG_CLK_OPS(name, cmu) _SAMSUNG_CLK_OPS(name, cmu) + +/** + * SAMSUNG_TO_CLK_ID - Calculate a global clock index. + * @_cmu: CMU index + * @_id: local clock index (unique across @_cmu) + * + * Return: A global clock index unique across all CMUs. + * Keeps a range of 256 available clocks for every CMU. + */ +#define SAMSUNG_TO_CLK_ID(_cmu, _id) (((_cmu) << 8) | ((_id) & 0xff)) + /** * struct samsung_mux_clock - information about mux clock * @id: platform specific id of the clock @@ -179,29 +224,14 @@ struct samsung_clk_group { unsigned int nr_clk; }; -void samsung_clk_register_mux(void __iomem *base, - const struct samsung_mux_clock *clk_list, - unsigned int nr_clk); -void samsung_clk_register_div(void __iomem *base, - const struct samsung_div_clock *clk_list, - unsigned int nr_clk); -void samsung_clk_register_gate(void __iomem *base, - const struct samsung_gate_clock *clk_list, - unsigned int nr_clk); -void samsung_clk_register_pll(void __iomem *base, - const struct samsung_pll_clock *clk_list, - unsigned int nr_clk); - -void samsung_cmu_register_clocks(void __iomem *base, - const struct samsung_clk_group *clk_groups, - unsigned int nr_groups); -int samsung_cmu_register_one(struct udevice *dev, +int samsung_cmu_register_one(struct udevice *dev, unsigned int cmu_id, const struct samsung_clk_group *clk_groups, unsigned int nr_groups); /** * samsung_register_cmu - Register CMU clocks ensuring parent CMU is present * @dev: CMU device + * @cmu_id: CMU index number * @clk_groups: list of CMU clock groups * @parent_drv: name of parent CMU driver * @@ -210,7 +240,7 @@ int samsung_cmu_register_one(struct udevice *dev, * * Return: 0 on success or negative value on error. */ -#define samsung_register_cmu(dev, clk_groups, parent_drv) \ +#define samsung_register_cmu(dev, cmu_id, clk_groups, parent_drv) \ ({ \ struct udevice *__parent; \ int __ret; \ @@ -220,8 +250,8 @@ int samsung_cmu_register_one(struct udevice *dev, if (__ret || !__parent) \ __ret = -ENOENT; \ else \ - __ret = samsung_cmu_register_one(dev, clk_groups, \ - ARRAY_SIZE(clk_groups)); \ + __ret = samsung_cmu_register_one(dev, cmu_id, \ + clk_groups, ARRAY_SIZE(clk_groups)); \ __ret; \ }) |