1/*
  2 * drivers/clk/at91/pmc.h
  3 *
  4 *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
  5 *
  6 * This program is free software; you can redistribute it and/or modify
  7 * it under the terms of the GNU General Public License as published by
  8 * the Free Software Foundation; either version 2 of the License, or
  9 * (at your option) any later version.
 10 */
 11
 12#ifndef __PMC_H_
 13#define __PMC_H_
 14
 15#include <linux/io.h>
 16#include <linux/irqdomain.h>
 17#include <linux/spinlock.h>
 18
 19struct clk_range {
 20	unsigned long min;
 21	unsigned long max;
 22};
 23
 24#define CLK_RANGE(MIN, MAX) {.min = MIN, .max = MAX,}
 25
 26struct at91_pmc_caps {
 27	u32 available_irqs;
 28};
 29
 30struct at91_pmc {
 31	void __iomem *regbase;
 32	int virq;
 33	spinlock_t lock;
 34	const struct at91_pmc_caps *caps;
 35	struct irq_domain *irqdomain;
 36};
 37
 38static inline void pmc_lock(struct at91_pmc *pmc)
 39{
 40	spin_lock(&pmc->lock);
 41}
 42
 43static inline void pmc_unlock(struct at91_pmc *pmc)
 44{
 45	spin_unlock(&pmc->lock);
 46}
 47
 48static inline u32 pmc_read(struct at91_pmc *pmc, int offset)
 49{
 50	return readl(pmc->regbase + offset);
 51}
 52
 53static inline void pmc_write(struct at91_pmc *pmc, int offset, u32 value)
 54{
 55	writel(value, pmc->regbase + offset);
 56}
 57
 58int of_at91_get_clk_range(struct device_node *np, const char *propname,
 59			  struct clk_range *range);
 60
 61extern void __init of_at91rm9200_clk_main_setup(struct device_node *np,
 62						struct at91_pmc *pmc);
 63
 64extern void __init of_at91rm9200_clk_pll_setup(struct device_node *np,
 65					       struct at91_pmc *pmc);
 66extern void __init of_at91sam9g45_clk_pll_setup(struct device_node *np,
 67						struct at91_pmc *pmc);
 68extern void __init of_at91sam9g20_clk_pllb_setup(struct device_node *np,
 69						 struct at91_pmc *pmc);
 70extern void __init of_sama5d3_clk_pll_setup(struct device_node *np,
 71					    struct at91_pmc *pmc);
 72extern void __init of_at91sam9x5_clk_plldiv_setup(struct device_node *np,
 73						  struct at91_pmc *pmc);
 74
 75extern void __init of_at91rm9200_clk_master_setup(struct device_node *np,
 76						  struct at91_pmc *pmc);
 77extern void __init of_at91sam9x5_clk_master_setup(struct device_node *np,
 78						  struct at91_pmc *pmc);
 79
 80extern void __init of_at91rm9200_clk_sys_setup(struct device_node *np,
 81					       struct at91_pmc *pmc);
 82
 83extern void __init of_at91rm9200_clk_periph_setup(struct device_node *np,
 84						  struct at91_pmc *pmc);
 85extern void __init of_at91sam9x5_clk_periph_setup(struct device_node *np,
 86						  struct at91_pmc *pmc);
 87
 88extern void __init of_at91rm9200_clk_prog_setup(struct device_node *np,
 89						struct at91_pmc *pmc);
 90extern void __init of_at91sam9g45_clk_prog_setup(struct device_node *np,
 91						 struct at91_pmc *pmc);
 92extern void __init of_at91sam9x5_clk_prog_setup(struct device_node *np,
 93						struct at91_pmc *pmc);
 94
 95#if defined(CONFIG_HAVE_AT91_UTMI)
 96extern void __init of_at91sam9x5_clk_utmi_setup(struct device_node *np,
 97						struct at91_pmc *pmc);
 98#endif
 99
100#if defined(CONFIG_HAVE_AT91_USB_CLK)
101extern void __init of_at91rm9200_clk_usb_setup(struct device_node *np,
102					       struct at91_pmc *pmc);
103extern void __init of_at91sam9x5_clk_usb_setup(struct device_node *np,
104					       struct at91_pmc *pmc);
105extern void __init of_at91sam9n12_clk_usb_setup(struct device_node *np,
106						struct at91_pmc *pmc);
107#endif
108
109#if defined(CONFIG_HAVE_AT91_SMD)
110extern void __init of_at91sam9x5_clk_smd_setup(struct device_node *np,
111					       struct at91_pmc *pmc);
112#endif
113
114#endif /* __PMC_H_ */