drivers/clk/at91/pmc.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * drivers/clk/at91/pmc.h
   4  *
   5  *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
   6  */
   7
   8 #ifndef __PMC_H_
   9 #define __PMC_H_
  10
  11 #include <linux/io.h>
  12 #include <linux/irqdomain.h>
  13 #include <linux/regmap.h>
  14 #include <linux/spinlock.h>
  15
  16 extern spinlock_t pmc_pcr_lock;
  17
  18 struct pmc_data {
  19         unsigned int ncore;
  20         struct clk_hw **chws;
  21         unsigned int nsystem;
  22         struct clk_hw **shws;
  23         unsigned int nperiph;
  24         struct clk_hw **phws;
  25         unsigned int ngck;
  26         struct clk_hw **ghws;
  27 };
  28
  29 struct clk_range {
  30         unsigned long min;
  31         unsigned long max;
  32 };
  33
  34 #define CLK_RANGE(MIN, MAX) {.min = MIN, .max = MAX,}
  35
  36 struct clk_master_layout {
  37         u32 offset;
  38         u32 mask;
  39         u8 pres_shift;
  40 };
  41
  42 extern const struct clk_master_layout at91rm9200_master_layout;
  43 extern const struct clk_master_layout at91sam9x5_master_layout;
  44
  45 struct clk_master_characteristics {
  46         struct clk_range output;
  47         u32 divisors[4];
  48         u8 have_div3_pres;
  49 };
  50
  51 struct clk_pll_layout {
  52         u32 pllr_mask;
  53         u16 mul_mask;
  54         u8 mul_shift;
  55 };
  56
  57 extern const struct clk_pll_layout at91rm9200_pll_layout;
  58 extern const struct clk_pll_layout at91sam9g45_pll_layout;
  59 extern const struct clk_pll_layout at91sam9g20_pllb_layout;
  60 extern const struct clk_pll_layout sama5d3_pll_layout;
  61
  62 struct clk_pll_characteristics {
  63         struct clk_range input;
  64         int num_output;
  65         const struct clk_range *output;
  66         u16 *icpll;
  67         u8 *out;
  68         u8 upll : 1;
  69 };
  70
  71 struct clk_programmable_layout {
  72         u8 pres_mask;
  73         u8 pres_shift;
  74         u8 css_mask;
  75         u8 have_slck_mck;
  76         u8 is_pres_direct;
  77 };
  78
  79 extern const struct clk_programmable_layout at91rm9200_programmable_layout;
  80 extern const struct clk_programmable_layout at91sam9g45_programmable_layout;
  81 extern const struct clk_programmable_layout at91sam9x5_programmable_layout;
  82
  83 struct clk_pcr_layout {
  84         u32 offset;
  85         u32 cmd;
  86         u32 div_mask;
  87         u32 gckcss_mask;
  88         u32 pid_mask;
  89 };
  90
  91 #define field_get(_mask, _reg) (((_reg) & (_mask)) >> (ffs(_mask) - 1))
  92 #define field_prep(_mask, _val) (((_val) << (ffs(_mask) - 1)) & (_mask))
  93
  94 #define ndck(a, s) (a[s - 1].id + 1)
  95 #define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1)
  96 struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,
  97                                    unsigned int nperiph, unsigned int ngck);
  98 void pmc_data_free(struct pmc_data *pmc_data);
  99
 100 int of_at91_get_clk_range(struct device_node *np, const char *propname,
 101                           struct clk_range *range);
 102
 103 struct clk_hw *of_clk_hw_pmc_get(struct of_phandle_args *clkspec, void *data);
 104
 105 struct clk_hw * __init
 106 at91_clk_register_audio_pll_frac(struct regmap *regmap, const char *name,
 107                                  const char *parent_name);
 108
 109 struct clk_hw * __init
 110 at91_clk_register_audio_pll_pad(struct regmap *regmap, const char *name,
 111                                 const char *parent_name);
 112
 113 struct clk_hw * __init
 114 at91_clk_register_audio_pll_pmc(struct regmap *regmap, const char *name,
 115                                 const char *parent_name);
 116
 117 struct clk_hw * __init
 118 at91_clk_register_generated(struct regmap *regmap, spinlock_t *lock,
 119                             const struct clk_pcr_layout *layout,
 120                             const char *name, const char **parent_names,
 121                             u8 num_parents, u8 id, bool pll_audio,
 122                             const struct clk_range *range);
 123
 124 struct clk_hw * __init
 125 at91_clk_register_h32mx(struct regmap *regmap, const char *name,
 126                         const char *parent_name);
 127
 128 struct clk_hw * __init
 129 at91_clk_i2s_mux_register(struct regmap *regmap, const char *name,
 130                           const char * const *parent_names,
 131                           unsigned int num_parents, u8 bus_id);
 132
 133 struct clk_hw * __init
 134 at91_clk_register_main_rc_osc(struct regmap *regmap, const char *name,
 135                               u32 frequency, u32 accuracy);
 136 struct clk_hw * __init
 137 at91_clk_register_main_osc(struct regmap *regmap, const char *name,
 138                            const char *parent_name, bool bypass);
 139 struct clk_hw * __init
 140 at91_clk_register_rm9200_main(struct regmap *regmap,
 141                               const char *name,
 142                               const char *parent_name);
 143 struct clk_hw * __init
 144 at91_clk_register_sam9x5_main(struct regmap *regmap, const char *name,
 145                               const char **parent_names, int num_parents);
 146
 147 struct clk_hw * __init
 148 at91_clk_register_master(struct regmap *regmap, const char *name,
 149                          int num_parents, const char **parent_names,
 150                          const struct clk_master_layout *layout,
 151                          const struct clk_master_characteristics *characteristics);
 152
 153 struct clk_hw * __init
 154 at91_clk_register_peripheral(struct regmap *regmap, const char *name,
 155                              const char *parent_name, u32 id);
 156 struct clk_hw * __init
 157 at91_clk_register_sam9x5_peripheral(struct regmap *regmap, spinlock_t *lock,
 158                                     const struct clk_pcr_layout *layout,
 159                                     const char *name, const char *parent_name,
 160                                     u32 id, const struct clk_range *range);
 161
 162 struct clk_hw * __init
 163 at91_clk_register_pll(struct regmap *regmap, const char *name,
 164                       const char *parent_name, u8 id,
 165                       const struct clk_pll_layout *layout,
 166                       const struct clk_pll_characteristics *characteristics);
 167 struct clk_hw * __init
 168 at91_clk_register_plldiv(struct regmap *regmap, const char *name,
 169                          const char *parent_name);
 170
 171 struct clk_hw * __init
 172 sam9x60_clk_register_pll(struct regmap *regmap, spinlock_t *lock,
 173                          const char *name, const char *parent_name, u8 id,
 174                          const struct clk_pll_characteristics *characteristics);
 175
 176 struct clk_hw * __init
 177 at91_clk_register_programmable(struct regmap *regmap, const char *name,
 178                                const char **parent_names, u8 num_parents, u8 id,
 179                                const struct clk_programmable_layout *layout);
 180
 181 struct clk_hw * __init
 182 at91_clk_register_sam9260_slow(struct regmap *regmap,
 183                                const char *name,
 184                                const char **parent_names,
 185                                int num_parents);
 186
 187 struct clk_hw * __init
 188 at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
 189                             const char **parent_names, u8 num_parents);
 190
 191 struct clk_hw * __init
 192 at91_clk_register_system(struct regmap *regmap, const char *name,
 193                          const char *parent_name, u8 id);
 194
 195 struct clk_hw * __init
 196 at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
 197                             const char **parent_names, u8 num_parents);
 198 struct clk_hw * __init
 199 at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
 200                              const char *parent_name);
 201 struct clk_hw * __init
 202 sam9x60_clk_register_usb(struct regmap *regmap, const char *name,
 203                          const char **parent_names, u8 num_parents);
 204 struct clk_hw * __init
 205 at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
 206                             const char *parent_name, const u32 *divisors);
 207
 208 struct clk_hw * __init
 209 at91_clk_register_utmi(struct regmap *regmap_pmc, struct regmap *regmap_sfr,
 210                        const char *name, const char *parent_name);
 211
 212 #ifdef CONFIG_PM
 213 void pmc_register_id(u8 id);
 214 void pmc_register_pck(u8 pck);
 215 #else
 216 static inline void pmc_register_id(u8 id) {}
 217 static inline void pmc_register_pck(u8 pck) {}
 218 #endif
 219
 220 #endif /* __PMC_H_ */