ti_prcm.h revision 1.1.2.2
1 1.1.2.2 jdolecek /* $NetBSD: ti_prcm.h,v 1.1.2.2 2017/12/03 11:35:56 jdolecek Exp $ */ 2 1.1.2.2 jdolecek 3 1.1.2.2 jdolecek /*- 4 1.1.2.2 jdolecek * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca> 5 1.1.2.2 jdolecek * All rights reserved. 6 1.1.2.2 jdolecek * 7 1.1.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 jdolecek * modification, are permitted provided that the following conditions 9 1.1.2.2 jdolecek * are met: 10 1.1.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 jdolecek * documentation and/or other materials provided with the distribution. 15 1.1.2.2 jdolecek * 16 1.1.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1.2.2 jdolecek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1.2.2 jdolecek * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1.2.2 jdolecek * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1.2.2 jdolecek * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.1.2.2 jdolecek * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.1.2.2 jdolecek * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.1.2.2 jdolecek * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.1.2.2 jdolecek * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 jdolecek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 jdolecek * SUCH DAMAGE. 27 1.1.2.2 jdolecek */ 28 1.1.2.2 jdolecek 29 1.1.2.2 jdolecek #ifndef _ARM_TI_PRCM_H 30 1.1.2.2 jdolecek #define _ARM_TI_PRCM_H 31 1.1.2.2 jdolecek 32 1.1.2.2 jdolecek #ifdef TI_PRCM_PRIVATE 33 1.1.2.2 jdolecek 34 1.1.2.2 jdolecek #include <dev/clk/clk_backend.h> 35 1.1.2.2 jdolecek 36 1.1.2.2 jdolecek struct ti_prcm_clk; 37 1.1.2.2 jdolecek struct ti_prcm_softc; 38 1.1.2.2 jdolecek 39 1.1.2.2 jdolecek enum ti_prcm_clktype { 40 1.1.2.2 jdolecek TI_PRCM_UNKNOWN, 41 1.1.2.2 jdolecek TI_PRCM_FIXED, 42 1.1.2.2 jdolecek TI_PRCM_FIXED_FACTOR, 43 1.1.2.2 jdolecek TI_PRCM_HWMOD, 44 1.1.2.2 jdolecek }; 45 1.1.2.2 jdolecek 46 1.1.2.2 jdolecek struct ti_prcm_fixed { 47 1.1.2.2 jdolecek u_int rate; 48 1.1.2.2 jdolecek }; 49 1.1.2.2 jdolecek 50 1.1.2.2 jdolecek struct ti_prcm_fixed_factor { 51 1.1.2.2 jdolecek u_int mult; 52 1.1.2.2 jdolecek u_int div; 53 1.1.2.2 jdolecek const char *parent; 54 1.1.2.2 jdolecek }; 55 1.1.2.2 jdolecek 56 1.1.2.2 jdolecek struct ti_prcm_hwmod { 57 1.1.2.2 jdolecek bus_size_t reg; 58 1.1.2.2 jdolecek const char *parent; 59 1.1.2.2 jdolecek }; 60 1.1.2.2 jdolecek 61 1.1.2.2 jdolecek struct ti_prcm_clk { 62 1.1.2.2 jdolecek struct clk base; 63 1.1.2.2 jdolecek enum ti_prcm_clktype type; 64 1.1.2.2 jdolecek union { 65 1.1.2.2 jdolecek struct ti_prcm_fixed fixed; 66 1.1.2.2 jdolecek struct ti_prcm_fixed_factor fixed_factor; 67 1.1.2.2 jdolecek struct ti_prcm_hwmod hwmod; 68 1.1.2.2 jdolecek } u; 69 1.1.2.2 jdolecek 70 1.1.2.2 jdolecek int (*enable)(struct ti_prcm_softc *, 71 1.1.2.2 jdolecek struct ti_prcm_clk *, int); 72 1.1.2.2 jdolecek u_int (*get_rate)(struct ti_prcm_softc *, 73 1.1.2.2 jdolecek struct ti_prcm_clk *); 74 1.1.2.2 jdolecek int (*set_rate)(struct ti_prcm_softc *, 75 1.1.2.2 jdolecek struct ti_prcm_clk *, u_int); 76 1.1.2.2 jdolecek const char * (*get_parent)(struct ti_prcm_softc *, 77 1.1.2.2 jdolecek struct ti_prcm_clk *); 78 1.1.2.2 jdolecek int (*set_parent)(struct ti_prcm_softc *, 79 1.1.2.2 jdolecek struct ti_prcm_clk *, 80 1.1.2.2 jdolecek const char *); 81 1.1.2.2 jdolecek }; 82 1.1.2.2 jdolecek 83 1.1.2.2 jdolecek int ti_prcm_attach(struct ti_prcm_softc *); 84 1.1.2.2 jdolecek struct ti_prcm_clk *ti_prcm_clock_find(struct ti_prcm_softc *, const char *); 85 1.1.2.2 jdolecek 86 1.1.2.2 jdolecek static inline u_int 87 1.1.2.2 jdolecek ti_prcm_fixed_get_rate(struct ti_prcm_softc *sc, struct ti_prcm_clk *tc) 88 1.1.2.2 jdolecek { 89 1.1.2.2 jdolecek KASSERT(tc->type == TI_PRCM_FIXED); 90 1.1.2.2 jdolecek return tc->u.fixed.rate; 91 1.1.2.2 jdolecek } 92 1.1.2.2 jdolecek 93 1.1.2.2 jdolecek #define TI_PRCM_FIXED(_name, _rate) \ 94 1.1.2.2 jdolecek { \ 95 1.1.2.2 jdolecek .type = TI_PRCM_FIXED, .base.name = (_name), \ 96 1.1.2.2 jdolecek .u.fixed.rate = (_rate), \ 97 1.1.2.2 jdolecek .get_rate = ti_prcm_fixed_get_rate, \ 98 1.1.2.2 jdolecek } 99 1.1.2.2 jdolecek 100 1.1.2.2 jdolecek static inline u_int 101 1.1.2.2 jdolecek ti_prcm_fixed_factor_get_rate(struct ti_prcm_softc *sc, struct ti_prcm_clk *tc) 102 1.1.2.2 jdolecek { 103 1.1.2.2 jdolecek KASSERT(tc->type == TI_PRCM_FIXED_FACTOR); 104 1.1.2.2 jdolecek struct ti_prcm_clk *tc_parent; 105 1.1.2.2 jdolecek 106 1.1.2.2 jdolecek tc_parent = ti_prcm_clock_find(sc, tc->u.fixed_factor.parent); 107 1.1.2.2 jdolecek KASSERT(tc_parent != NULL); 108 1.1.2.2 jdolecek 109 1.1.2.2 jdolecek const u_int mult = tc->u.fixed_factor.mult; 110 1.1.2.2 jdolecek const u_int div = tc->u.fixed_factor.div; 111 1.1.2.2 jdolecek 112 1.1.2.2 jdolecek return (clk_get_rate(&tc_parent->base) * mult) / div; 113 1.1.2.2 jdolecek } 114 1.1.2.2 jdolecek 115 1.1.2.2 jdolecek static inline const char * 116 1.1.2.2 jdolecek ti_prcm_fixed_factor_get_parent(struct ti_prcm_softc *sc, struct ti_prcm_clk *tc) 117 1.1.2.2 jdolecek { 118 1.1.2.2 jdolecek KASSERT(tc->type == TI_PRCM_FIXED_FACTOR); 119 1.1.2.2 jdolecek return tc->u.fixed_factor.parent; 120 1.1.2.2 jdolecek } 121 1.1.2.2 jdolecek 122 1.1.2.2 jdolecek #define TI_PRCM_FIXED_FACTOR(_name, _mult, _div, _parent) \ 123 1.1.2.2 jdolecek { \ 124 1.1.2.2 jdolecek .type = TI_PRCM_FIXED_FACTOR, .base.name = (_name), \ 125 1.1.2.2 jdolecek .u.fixed_factor.mult = (_mult), \ 126 1.1.2.2 jdolecek .u.fixed_factor.div = (_div), \ 127 1.1.2.2 jdolecek .u.fixed_factor.parent = (_parent), \ 128 1.1.2.2 jdolecek .get_rate = ti_prcm_fixed_factor_get_rate, \ 129 1.1.2.2 jdolecek .get_parent = ti_prcm_fixed_factor_get_parent, \ 130 1.1.2.2 jdolecek } 131 1.1.2.2 jdolecek 132 1.1.2.2 jdolecek static inline const char * 133 1.1.2.2 jdolecek ti_prcm_hwmod_get_parent(struct ti_prcm_softc *sc, struct ti_prcm_clk *tc) 134 1.1.2.2 jdolecek { 135 1.1.2.2 jdolecek KASSERT(tc->type == TI_PRCM_HWMOD); 136 1.1.2.2 jdolecek return tc->u.hwmod.parent; 137 1.1.2.2 jdolecek } 138 1.1.2.2 jdolecek 139 1.1.2.2 jdolecek #define TI_PRCM_HWMOD(_name, _reg, _parent, _enable) \ 140 1.1.2.2 jdolecek { \ 141 1.1.2.2 jdolecek .type = TI_PRCM_HWMOD, .base.name = (_name), \ 142 1.1.2.2 jdolecek .u.hwmod.reg = (_reg), \ 143 1.1.2.2 jdolecek .u.hwmod.parent = (_parent), \ 144 1.1.2.2 jdolecek .enable = (_enable), \ 145 1.1.2.2 jdolecek .get_parent = ti_prcm_hwmod_get_parent, \ 146 1.1.2.2 jdolecek } 147 1.1.2.2 jdolecek 148 1.1.2.2 jdolecek struct ti_prcm_softc { 149 1.1.2.2 jdolecek device_t sc_dev; 150 1.1.2.2 jdolecek int sc_phandle; 151 1.1.2.2 jdolecek bus_space_tag_t sc_bst; 152 1.1.2.2 jdolecek bus_space_handle_t sc_bsh; 153 1.1.2.2 jdolecek 154 1.1.2.2 jdolecek struct clk_domain sc_clkdom; 155 1.1.2.2 jdolecek 156 1.1.2.2 jdolecek struct ti_prcm_clk *sc_clks; 157 1.1.2.2 jdolecek u_int sc_nclks; 158 1.1.2.2 jdolecek }; 159 1.1.2.2 jdolecek 160 1.1.2.2 jdolecek #define PRCM_READ(sc, reg) \ 161 1.1.2.2 jdolecek bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 162 1.1.2.2 jdolecek #define PRCM_WRITE(sc, reg, val) \ 163 1.1.2.2 jdolecek bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 164 1.1.2.2 jdolecek 165 1.1.2.2 jdolecek #endif /* !TI_PRCM_PRIVATE */ 166 1.1.2.2 jdolecek 167 1.1.2.2 jdolecek struct clk * ti_prcm_get_hwmod(const int, u_int); 168 1.1.2.2 jdolecek 169 1.1.2.2 jdolecek #endif /* !_ARM_TI_PRCM_H */ 170
Indexes created Tue Oct 28 12:10:06 GMT 2025