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The default is for dividers to set CLK_SET_PARENT_RATE and for muxes to not set that flag. In the LDB clock tree, we need the opposite, so add functions to create divider and mux clocks with configurable flags. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
#ifndef __MACH_IMX_CLK_H
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#define __MACH_IMX_CLK_H
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#include <linux/spinlock.h>
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#include <linux/clk-provider.h>
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extern spinlock_t imx_ccm_lock;
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struct clk *imx_clk_pllv1(const char *name, const char *parent,
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void __iomem *base);
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struct clk *imx_clk_pllv2(const char *name, const char *parent,
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void __iomem *base);
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enum imx_pllv3_type {
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IMX_PLLV3_GENERIC,
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IMX_PLLV3_SYS,
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IMX_PLLV3_USB,
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IMX_PLLV3_AV,
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IMX_PLLV3_ENET,
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IMX_PLLV3_MLB,
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};
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struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
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const char *parent_name, void __iomem *base, u32 div_mask);
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struct clk *clk_register_gate2(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags,
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void __iomem *reg, u8 bit_idx,
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u8 clk_gate_flags, spinlock_t *lock);
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static inline struct clk *imx_clk_gate2(const char *name, const char *parent,
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void __iomem *reg, u8 shift)
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{
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return clk_register_gate2(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
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shift, 0, &imx_ccm_lock);
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}
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struct clk *imx_clk_pfd(const char *name, const char *parent_name,
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void __iomem *reg, u8 idx);
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struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
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void __iomem *reg, u8 shift, u8 width,
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void __iomem *busy_reg, u8 busy_shift);
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struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
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u8 width, void __iomem *busy_reg, u8 busy_shift,
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const char **parent_names, int num_parents);
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static inline struct clk *imx_clk_fixed(const char *name, int rate)
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{
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return clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT, rate);
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}
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static inline struct clk *imx_clk_divider(const char *name, const char *parent,
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void __iomem *reg, u8 shift, u8 width)
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{
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return clk_register_divider(NULL, name, parent, CLK_SET_RATE_PARENT,
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reg, shift, width, 0, &imx_ccm_lock);
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}
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static inline struct clk *imx_clk_divider_flags(const char *name,
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const char *parent, void __iomem *reg, u8 shift, u8 width,
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unsigned long flags)
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{
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return clk_register_divider(NULL, name, parent, flags,
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reg, shift, width, 0, &imx_ccm_lock);
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}
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static inline struct clk *imx_clk_gate(const char *name, const char *parent,
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void __iomem *reg, u8 shift)
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{
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return clk_register_gate(NULL, name, parent, CLK_SET_RATE_PARENT, reg,
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shift, 0, &imx_ccm_lock);
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}
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static inline struct clk *imx_clk_mux(const char *name, void __iomem *reg,
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u8 shift, u8 width, const char **parents, int num_parents)
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{
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return clk_register_mux(NULL, name, parents, num_parents, 0, reg, shift,
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width, 0, &imx_ccm_lock);
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}
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static inline struct clk *imx_clk_mux_flags(const char *name,
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void __iomem *reg, u8 shift, u8 width, const char **parents,
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int num_parents, unsigned long flags)
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{
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return clk_register_mux(NULL, name, parents, num_parents,
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flags, reg, shift, width, 0,
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&imx_ccm_lock);
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}
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static inline struct clk *imx_clk_fixed_factor(const char *name,
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const char *parent, unsigned int mult, unsigned int div)
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{
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return clk_register_fixed_factor(NULL, name, parent,
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CLK_SET_RATE_PARENT, mult, div);
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}
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#endif
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