fdt_mmc_pwrseq.c revision 1.1.2.2
1 1.1.2.2 jdolecek /* $NetBSD: fdt_mmc_pwrseq.c,v 1.1.2.2 2017/12/03 11:37:01 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 #include <sys/cdefs.h> 30 1.1.2.2 jdolecek __KERNEL_RCSID(0, "$NetBSD: fdt_mmc_pwrseq.c,v 1.1.2.2 2017/12/03 11:37:01 jdolecek Exp $"); 31 1.1.2.2 jdolecek 32 1.1.2.2 jdolecek #include <sys/param.h> 33 1.1.2.2 jdolecek #include <sys/bus.h> 34 1.1.2.2 jdolecek #include <sys/kmem.h> 35 1.1.2.2 jdolecek 36 1.1.2.2 jdolecek #include <libfdt.h> 37 1.1.2.2 jdolecek #include <dev/fdt/fdtvar.h> 38 1.1.2.2 jdolecek 39 1.1.2.2 jdolecek struct fdtbus_mmc_pwrseq { 40 1.1.2.2 jdolecek device_t mps_dev; 41 1.1.2.2 jdolecek int mps_phandle; 42 1.1.2.2 jdolecek const struct fdtbus_mmc_pwrseq_func *mps_funcs; 43 1.1.2.2 jdolecek 44 1.1.2.2 jdolecek struct fdtbus_mmc_pwrseq *mps_next; 45 1.1.2.2 jdolecek }; 46 1.1.2.2 jdolecek 47 1.1.2.2 jdolecek static struct fdtbus_mmc_pwrseq *fdtbus_mps = NULL; 48 1.1.2.2 jdolecek 49 1.1.2.2 jdolecek int 50 1.1.2.2 jdolecek fdtbus_register_mmc_pwrseq(device_t dev, int phandle, 51 1.1.2.2 jdolecek const struct fdtbus_mmc_pwrseq_func *funcs) 52 1.1.2.2 jdolecek { 53 1.1.2.2 jdolecek struct fdtbus_mmc_pwrseq *mps; 54 1.1.2.2 jdolecek 55 1.1.2.2 jdolecek mps = kmem_alloc(sizeof(*mps), KM_SLEEP); 56 1.1.2.2 jdolecek mps->mps_dev = dev; 57 1.1.2.2 jdolecek mps->mps_phandle = phandle; 58 1.1.2.2 jdolecek mps->mps_funcs = funcs; 59 1.1.2.2 jdolecek 60 1.1.2.2 jdolecek mps->mps_next = fdtbus_mps; 61 1.1.2.2 jdolecek fdtbus_mps = mps; 62 1.1.2.2 jdolecek 63 1.1.2.2 jdolecek return 0; 64 1.1.2.2 jdolecek } 65 1.1.2.2 jdolecek 66 1.1.2.2 jdolecek static struct fdtbus_mmc_pwrseq * 67 1.1.2.2 jdolecek fdtbus_get_mmc_pwrseq(int phandle) 68 1.1.2.2 jdolecek { 69 1.1.2.2 jdolecek struct fdtbus_mmc_pwrseq *mps; 70 1.1.2.2 jdolecek 71 1.1.2.2 jdolecek for (mps = fdtbus_mps; mps; mps = mps->mps_next) { 72 1.1.2.2 jdolecek if (mps->mps_phandle == phandle) { 73 1.1.2.2 jdolecek return mps; 74 1.1.2.2 jdolecek } 75 1.1.2.2 jdolecek } 76 1.1.2.2 jdolecek 77 1.1.2.2 jdolecek return NULL; 78 1.1.2.2 jdolecek } 79 1.1.2.2 jdolecek 80 1.1.2.2 jdolecek struct fdtbus_mmc_pwrseq * 81 1.1.2.2 jdolecek fdtbus_mmc_pwrseq_get(int phandle) 82 1.1.2.2 jdolecek { 83 1.1.2.2 jdolecek const u_int *p; 84 1.1.2.2 jdolecek int mps_phandle; 85 1.1.2.2 jdolecek 86 1.1.2.2 jdolecek p = fdtbus_get_prop(phandle, "mmc-pwrseq", NULL); 87 1.1.2.2 jdolecek if (p == NULL) 88 1.1.2.2 jdolecek return NULL; 89 1.1.2.2 jdolecek 90 1.1.2.2 jdolecek mps_phandle = fdtbus_get_phandle_from_native(be32toh(p[0])); 91 1.1.2.2 jdolecek return fdtbus_get_mmc_pwrseq(mps_phandle); 92 1.1.2.2 jdolecek } 93 1.1.2.2 jdolecek 94 1.1.2.2 jdolecek void 95 1.1.2.2 jdolecek fdtbus_mmc_pwrseq_pre_power_on(struct fdtbus_mmc_pwrseq *mps) 96 1.1.2.2 jdolecek { 97 1.1.2.2 jdolecek if (mps->mps_funcs->pre_power_on) 98 1.1.2.2 jdolecek mps->mps_funcs->pre_power_on(mps->mps_dev); 99 1.1.2.2 jdolecek } 100 1.1.2.2 jdolecek 101 1.1.2.2 jdolecek void 102 1.1.2.2 jdolecek fdtbus_mmc_pwrseq_post_power_on(struct fdtbus_mmc_pwrseq *mps) 103 1.1.2.2 jdolecek { 104 1.1.2.2 jdolecek if (mps->mps_funcs->post_power_on) 105 1.1.2.2 jdolecek mps->mps_funcs->post_power_on(mps->mps_dev); 106 1.1.2.2 jdolecek } 107 1.1.2.2 jdolecek 108 1.1.2.2 jdolecek void 109 1.1.2.2 jdolecek fdtbus_mmc_pwrseq_power_off(struct fdtbus_mmc_pwrseq *mps) 110 1.1.2.2 jdolecek { 111 1.1.2.2 jdolecek if (mps->mps_funcs->power_off) 112 1.1.2.2 jdolecek mps->mps_funcs->power_off(mps->mps_dev); 113 1.1.2.2 jdolecek } 114 1.1.2.2 jdolecek 115 1.1.2.2 jdolecek void 116 1.1.2.2 jdolecek fdtbus_mmc_pwrseq_reset(struct fdtbus_mmc_pwrseq *mps) 117 1.1.2.2 jdolecek { 118 1.1.2.2 jdolecek if (mps->mps_funcs->reset) 119 1.1.2.2 jdolecek mps->mps_funcs->reset(mps->mps_dev); 120 1.1.2.2 jdolecek } 121
Indexes created Thu Oct 02 01:09:59 GMT 2025