linux-stable/drivers/clk/clk-fractional-divider.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CLK_FRACTIONAL_DIV_H
#define _CLK_FRACTIONAL_DIV_H

struct clk_hw;

extern const struct clk_ops clk_fractional_divider_ops;

void clk_fractional_divider_general_approximation(struct clk_hw *hw,
						  unsigned long rate,
						  unsigned long *parent_rate,
						  unsigned long *m,
						  unsigned long *n);

#endif
clk: fractional-divider: Export approximation algorithm to the CCF users At least one user currently duplicates some functions that are provided by fractional divider module. Let's export approximation algorithm and replace the open-coded variant. As a bonus the exported function will get better documentation in place. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20210812170025.67074-1-andriy.shevchenko@linux.intel.com [sboyd@kernel.org: Add header guard because why not] Signed-off-by: Stephen Boyd <sboyd@kernel.org> 2021-08-12 17:00:22 +00:00			`/* SPDX-License-Identifier: GPL-2.0 */`
			`#ifndef _CLK_FRACTIONAL_DIV_H`
			`#define _CLK_FRACTIONAL_DIV_H`

			`struct clk_hw;`

clk: fractional-divider: Hide clk_fractional_divider_ops from wide audience The providers are all located in drivers/clk/ and hence no need to export the clock operations to wider audience. Hide them by moving to drivers/clk/clk-fractional-divider.h. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210812170025.67074-2-andriy.shevchenko@linux.intel.com Signed-off-by: Stephen Boyd <sboyd@kernel.org> 2021-08-12 17:00:23 +00:00			`extern const struct clk_ops clk_fractional_divider_ops;`

clk: fractional-divider: Export approximation algorithm to the CCF users At least one user currently duplicates some functions that are provided by fractional divider module. Let's export approximation algorithm and replace the open-coded variant. As a bonus the exported function will get better documentation in place. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20210812170025.67074-1-andriy.shevchenko@linux.intel.com [sboyd@kernel.org: Add header guard because why not] Signed-off-by: Stephen Boyd <sboyd@kernel.org> 2021-08-12 17:00:22 +00:00			`void clk_fractional_divider_general_approximation(struct clk_hw *hw,`
			`unsigned long rate,`
			`unsigned long *parent_rate,`
			`unsigned long *m,`
			`unsigned long *n);`

			`#endif`