108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Clock driver for TI Davinci PSC controllers
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*
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* Copyright (C) 2018 David Lechner <david@lechnology.com>
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*/
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#ifndef __CLK_DAVINCI_PSC_H__
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#define __CLK_DAVINCI_PSC_H__
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#include <linux/clk-provider.h>
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#include <linux/types.h>
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/* PSC quirk flags */
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#define LPSC_ALWAYS_ENABLED BIT(0) /* never disable this clock */
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#define LPSC_SET_RATE_PARENT BIT(1) /* propagate set_rate to parent clock */
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#define LPSC_FORCE BIT(2) /* requires MDCTL FORCE bit */
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#define LPSC_LOCAL_RESET BIT(3) /* acts as reset provider */
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struct davinci_lpsc_clkdev_info {
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const char *con_id;
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const char *dev_id;
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};
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#define LPSC_CLKDEV(c, d) { \
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.con_id = (c), \
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.dev_id = (d) \
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}
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#define LPSC_CLKDEV1(n, c, d) \
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static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
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LPSC_CLKDEV((c), (d)), \
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{ } \
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}
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#define LPSC_CLKDEV2(n, c1, d1, c2, d2) \
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static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
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LPSC_CLKDEV((c1), (d1)), \
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LPSC_CLKDEV((c2), (d2)), \
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{ } \
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}
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#define LPSC_CLKDEV3(n, c1, d1, c2, d2, c3, d3) \
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static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
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LPSC_CLKDEV((c1), (d1)), \
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LPSC_CLKDEV((c2), (d2)), \
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LPSC_CLKDEV((c3), (d3)), \
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{ } \
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}
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/**
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* davinci_lpsc_clk_info - LPSC module-specific clock information
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* @name: the clock name
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* @parent: the parent clock name
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* @cdevs: optional array of clkdev lookup table info
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* @md: the local module domain (LPSC id)
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* @pd: the power domain id
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* @flags: bitmask of LPSC_* flags
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*/
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struct davinci_lpsc_clk_info {
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const char *name;
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const char *parent;
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const struct davinci_lpsc_clkdev_info *cdevs;
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u32 md;
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u32 pd;
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unsigned long flags;
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};
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#define LPSC(m, d, n, p, c, f) \
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{ \
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.name = #n, \
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.parent = #p, \
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.cdevs = (c), \
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.md = (m), \
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.pd = (d), \
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.flags = (f), \
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}
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int davinci_psc_register_clocks(struct device *dev,
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const struct davinci_lpsc_clk_info *info,
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u8 num_clks,
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void __iomem *base);
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int of_davinci_psc_clk_init(struct device *dev,
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const struct davinci_lpsc_clk_info *info,
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u8 num_clks,
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void __iomem *base);
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/* Device-specific data */
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struct davinci_psc_init_data {
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struct clk_bulk_data *parent_clks;
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int num_parent_clks;
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int (*psc_init)(struct device *dev, void __iomem *base);
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};
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#ifdef CONFIG_ARCH_DAVINCI_DA830
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extern const struct davinci_psc_init_data da830_psc0_init_data;
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extern const struct davinci_psc_init_data da830_psc1_init_data;
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#endif
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#ifdef CONFIG_ARCH_DAVINCI_DA850
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extern const struct davinci_psc_init_data da850_psc0_init_data;
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extern const struct davinci_psc_init_data da850_psc1_init_data;
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extern const struct davinci_psc_init_data of_da850_psc0_init_data;
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extern const struct davinci_psc_init_data of_da850_psc1_init_data;
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#endif
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#endif /* __CLK_DAVINCI_PSC_H__ */
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