LXR linux/drivers/clk/davinci/psc.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Clock driver for TI Davinci PSC controllers
   4 *
   5 * Copyright (C) 2018 David Lechner <david@lechnology.com>
   6 */
   7
   8#ifndef __CLK_DAVINCI_PSC_H__
   9#define __CLK_DAVINCI_PSC_H__
  10
  11#include <linux/clk-provider.h>
  12#include <linux/types.h>
  13
  14/* PSC quirk flags */
  15#define LPSC_ALWAYS_ENABLED     BIT(0) /* never disable this clock */
  16#define LPSC_SET_RATE_PARENT    BIT(1) /* propagate set_rate to parent clock */
  17#define LPSC_FORCE              BIT(2) /* requires MDCTL FORCE bit */
  18#define LPSC_LOCAL_RESET        BIT(3) /* acts as reset provider */
  19
  20struct davinci_lpsc_clkdev_info {
  21        const char *con_id;
  22        const char *dev_id;
  23};
  24
  25#define LPSC_CLKDEV(c, d) {     \
  26        .con_id = (c),          \
  27        .dev_id = (d)           \
  28}
  29
  30#define LPSC_CLKDEV1(n, c, d) \
  31static const struct davinci_lpsc_clkdev_info n[] __initconst = {        \
  32        LPSC_CLKDEV((c), (d)),                                          \
  33        { }                                                             \
  34}
  35
  36#define LPSC_CLKDEV2(n, c1, d1, c2, d2) \
  37static const struct davinci_lpsc_clkdev_info n[] __initconst = {        \
  38        LPSC_CLKDEV((c1), (d1)),                                        \
  39        LPSC_CLKDEV((c2), (d2)),                                        \
  40        { }                                                             \
  41}
  42
  43#define LPSC_CLKDEV3(n, c1, d1, c2, d2, c3, d3) \
  44static const struct davinci_lpsc_clkdev_info n[] __initconst = {        \
  45        LPSC_CLKDEV((c1), (d1)),                                        \
  46        LPSC_CLKDEV((c2), (d2)),                                        \
  47        LPSC_CLKDEV((c3), (d3)),                                        \
  48        { }                                                             \
  49}
  50
  51/**
  52 * davinci_lpsc_clk_info - LPSC module-specific clock information
  53 * @name: the clock name
  54 * @parent: the parent clock name
  55 * @cdevs: optional array of clkdev lookup table info
  56 * @md: the local module domain (LPSC id)
  57 * @pd: the power domain id
  58 * @flags: bitmask of LPSC_* flags
  59 */
  60struct davinci_lpsc_clk_info {
  61        const char *name;
  62        const char *parent;
  63        const struct davinci_lpsc_clkdev_info *cdevs;
  64        u32 md;
  65        u32 pd;
  66        unsigned long flags;
  67};
  68
  69#define LPSC(m, d, n, p, c, f)  \
  70{                               \
  71        .name   = #n,           \
  72        .parent = #p,           \
  73        .cdevs  = (c),          \
  74        .md     = (m),          \
  75        .pd     = (d),          \
  76        .flags  = (f),          \
  77}
  78
  79int davinci_psc_register_clocks(struct device *dev,
  80                                const struct davinci_lpsc_clk_info *info,
  81                                u8 num_clks,
  82                                void __iomem *base);
  83
  84int of_davinci_psc_clk_init(struct device *dev,
  85                            const struct davinci_lpsc_clk_info *info,
  86                            u8 num_clks,
  87                            void __iomem *base);
  88
  89/* Device-specific data */
  90
  91struct davinci_psc_init_data {
  92        struct clk_bulk_data *parent_clks;
  93        int num_parent_clks;
  94        int (*psc_init)(struct device *dev, void __iomem *base);
  95};
  96
  97#ifdef CONFIG_ARCH_DAVINCI_DA830
  98extern const struct davinci_psc_init_data da830_psc0_init_data;
  99extern const struct davinci_psc_init_data da830_psc1_init_data;
 100#endif
 101#ifdef CONFIG_ARCH_DAVINCI_DA850
 102extern const struct davinci_psc_init_data da850_psc0_init_data;
 103extern const struct davinci_psc_init_data da850_psc1_init_data;
 104extern const struct davinci_psc_init_data of_da850_psc0_init_data;
 105extern const struct davinci_psc_init_data of_da850_psc1_init_data;
 106#endif
 107#ifdef CONFIG_ARCH_DAVINCI_DM355
 108extern const struct davinci_psc_init_data dm355_psc_init_data;
 109#endif
 110#ifdef CONFIG_ARCH_DAVINCI_DM365
 111extern const struct davinci_psc_init_data dm365_psc_init_data;
 112#endif
 113#ifdef CONFIG_ARCH_DAVINCI_DM644x
 114extern const struct davinci_psc_init_data dm644x_psc_init_data;
 115#endif
 116#ifdef CONFIG_ARCH_DAVINCI_DM646x
 117extern const struct davinci_psc_init_data dm646x_psc_init_data;
 118#endif
 119
 120#endif /* __CLK_DAVINCI_PSC_H__ */
 121