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Commit 9a356d62 authored by Tero Kristo's avatar Tero Kristo
Browse files

ARM: OMAP2+: clock: add support for clkdm ops to the low level clk ops 



Clock driver requires access to certain clockdomain handling ops once
the code is being moved over under clock driver. Example of this is
clk_enable / clk_disable under omap3 DPLL code. The required clkdm
APIs are now exported through the ti_clk_ll_ops struct.

Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
parent 846fdf2a

arch/arm/mach-omap2/clock.c

+2 −0
Original line number Diff line number Diff line
@@ -120,6 +120,8 @@ u32 omap2_clk_readl(struct clk_hw_omap *clk, void __iomem *reg) 
static struct ti_clk_ll_ops omap_clk_ll_ops = {

	.clk_readl = clk_memmap_readl,

	.clk_writel = clk_memmap_writel,

	.clkdm_clk_enable = clkdm_clk_enable,

	.clkdm_clk_disable = clkdm_clk_disable,

};



/**

include/linux/clk/ti.h

+11 −5
Original line number Diff line number Diff line
@@ -238,18 +238,24 @@ struct clk_omap_reg { 
};



/**

 * struct ti_clk_ll_ops - low-level register access ops for a clock

 * struct ti_clk_ll_ops - low-level ops for clocks

 * @clk_readl: pointer to register read function

 * @clk_writel: pointer to register write function

 * @clkdm_clk_enable: pointer to clockdomain enable function

 * @clkdm_clk_disable: pointer to clockdomain disable function

 *

 * Low-level register access ops are generally used by the basic clock types

 * (clk-gate, clk-mux, clk-divider etc.) to provide support for various

 * low-level hardware interfaces (direct MMIO, regmap etc.), but can also be

 * used by other hardware-specific clock drivers if needed.

 * Low-level ops are generally used by the basic clock types (clk-gate,

 * clk-mux, clk-divider etc.) to provide support for various low-level

 * hadrware interfaces (direct MMIO, regmap etc.), and is initialized

 * by board code. Low-level ops also contain some other platform specific

 * operations not provided directly by clock drivers.

 */

struct ti_clk_ll_ops {

	u32	(*clk_readl)(void __iomem *reg);

	void	(*clk_writel)(u32 val, void __iomem *reg);

	int	(*clkdm_clk_enable)(struct clockdomain *clkdm, struct clk *clk);

	int	(*clkdm_clk_disable)(struct clockdomain *clkdm,

				     struct clk *clk);

};



extern struct ti_clk_ll_ops *ti_clk_ll_ops;