1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bus.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 38 #include <dev/ofw/ofw_bus.h> 39 #include <dev/ofw/ofw_bus_subr.h> 40 41 #include <dev/extres/syscon/syscon.h> 42 #include <dev/extres/regulator/regulator.h> 43 44 #include "syscon_if.h" 45 46 #define RK3288_GRF_IO_VSEL 0x380 47 #define RK3399_GRF_IO_VSEL 0xe640 48 #define RK3399_PMUGRF_SOC_CON0 0x180 49 #define RK3568_PMUGRF_IO_VSEL0 0x0140 50 #define RK3568_PMUGRF_IO_VSEL1 0x0144 51 #define RK3568_PMUGRF_IO_VSEL2 0x0148 52 53 #define MAX_1V8 1850000 54 55 enum rk_iodomain_type { 56 RK3328 = 1, 57 RK3399, 58 RK3568, 59 }; 60 61 struct rk_iodomain_supply { 62 char *name; 63 uint32_t bit; 64 }; 65 66 struct rk_iodomain_softc; 67 68 struct rk_iodomain_conf { 69 struct rk_iodomain_supply *supply; 70 int nsupply; 71 uint32_t grf_reg; 72 void (*init)(struct rk_iodomain_softc *sc); 73 enum rk_iodomain_type type; 74 }; 75 76 struct rk_iodomain_softc { 77 device_t dev; 78 struct syscon *grf; 79 phandle_t node; 80 struct rk_iodomain_conf *conf; 81 }; 82 83 static struct rk_iodomain_supply rk3288_supply[] = { 84 {"lcdc-supply", 0}, 85 {"dvp-supply", 1}, 86 {"flash0-supply", 2}, 87 {"flash1-supply", 3}, 88 {"wifi-supply", 4}, 89 {"bb-supply", 5}, 90 {"audio-supply", 6}, 91 {"sdcard-supply", 7}, 92 {"gpio30-supply", 8}, 93 {"gpio1830-supply", 9}, 94 }; 95 96 static struct rk_iodomain_conf rk3288_conf = { 97 .supply = rk3288_supply, 98 .nsupply = nitems(rk3288_supply), 99 .grf_reg = RK3288_GRF_IO_VSEL, 100 .type = RK3328, 101 }; 102 103 static struct rk_iodomain_supply rk3399_supply[] = { 104 {"bt656-supply", 0}, 105 {"audio-supply", 1}, 106 {"sdmmc-supply", 2}, 107 {"gpio1830-supply", 3}, 108 }; 109 110 static struct rk_iodomain_conf rk3399_conf = { 111 .supply = rk3399_supply, 112 .nsupply = nitems(rk3399_supply), 113 .grf_reg = RK3399_GRF_IO_VSEL, 114 .type = RK3399, 115 }; 116 117 static struct rk_iodomain_supply rk3399_pmu_supply[] = { 118 {"pmu1830-supply", 9}, 119 }; 120 121 static void rk3399_pmu_init(struct rk_iodomain_softc *sc); 122 static struct rk_iodomain_conf rk3399_pmu_conf = { 123 .supply = rk3399_pmu_supply, 124 .nsupply = nitems(rk3399_pmu_supply), 125 .grf_reg = RK3399_PMUGRF_SOC_CON0, 126 .init = rk3399_pmu_init, 127 .type = RK3399, 128 }; 129 130 static struct rk_iodomain_supply rk3568_pmu_supply[] = { 131 {"pmuio1-supply", 0}, 132 {"pmuio2-supply", 1}, 133 {"vccio1-supply", 1}, 134 {"vccio2-supply", 2}, 135 {"vccio3-supply", 3}, 136 {"vccio4-supply", 4}, 137 {"vccio5-supply", 5}, 138 {"vccio6-supply", 6}, 139 {"vccio7-supply", 7}, 140 }; 141 static struct rk_iodomain_conf rk3568_pmu_conf = { 142 .supply = rk3568_pmu_supply, 143 .nsupply = nitems(rk3568_pmu_supply), 144 .type = RK3568, 145 }; 146 147 static struct ofw_compat_data compat_data[] = { 148 {"rockchip,rk3288-io-voltage-domain", (uintptr_t)&rk3288_conf}, 149 {"rockchip,rk3399-io-voltage-domain", (uintptr_t)&rk3399_conf}, 150 {"rockchip,rk3399-pmu-io-voltage-domain", (uintptr_t)&rk3399_pmu_conf}, 151 {"rockchip,rk3568-pmu-io-voltage-domain", (uintptr_t)&rk3568_pmu_conf}, 152 {NULL, 0} 153 }; 154 155 static void 156 rk3399_pmu_init(struct rk_iodomain_softc *sc) 157 { 158 159 SYSCON_WRITE_4(sc->grf, RK3399_PMUGRF_SOC_CON0, 160 (1 << 8) | (1 << (8 + 16))); /* set pmu1830_volsel */ 161 } 162 163 static int 164 rk_iodomain_set(struct rk_iodomain_softc *sc) 165 { 166 regulator_t supply; 167 uint32_t reg = 0; 168 uint32_t mask = 0; 169 int uvolt, i; 170 171 for (i = 0; i < sc->conf->nsupply; i++) { 172 if (regulator_get_by_ofw_property(sc->dev, sc->node, 173 sc->conf->supply[i].name, &supply) != 0) { 174 device_printf(sc->dev, 175 "Cannot get property for regulator %s\n", 176 sc->conf->supply[i].name); 177 return (ENXIO); 178 } 179 180 if (regulator_get_voltage(supply, &uvolt) != 0) { 181 device_printf(sc->dev, 182 "Cannot get current voltage for regulator %s\n", 183 sc->conf->supply[i].name); 184 return (ENXIO); 185 } 186 187 if (sc->conf->type != RK3568) { 188 /* RK3328 and RK3399 iodomain */ 189 mask |= (1 << sc->conf->supply[i].bit) << 16; 190 if (uvolt == 1800000) 191 reg |= (1 << sc->conf->supply[i].bit); 192 else if (uvolt != 3000000) 193 device_printf(sc->dev, 194 "%s regulator is at %duV, ignoring\n", 195 sc->conf->supply[i].name, uvolt); 196 } else { 197 /* RK3568 iodomain */ 198 if (bootverbose) { 199 device_printf(sc->dev, 200 "Setting regulator %s voltage=%duV\n", 201 sc->conf->supply[i].name, uvolt); 202 } 203 switch(i) { 204 case 0: /* pmuio1 */ 205 break; 206 case 1: /* pmuio2 */ 207 SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL2, 208 (1 << (sc->conf->supply[i].bit + 16)) | 209 (uvolt > MAX_1V8 ? 210 0 : 1 << sc->conf->supply[i].bit)); 211 SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL2, 212 (1 << (sc->conf->supply[i].bit + 4 + 16)) | 213 (uvolt > MAX_1V8 ? 214 1 << (sc->conf->supply[i].bit + 4) : 0)); 215 case 3: /* vccio2 */ 216 break; 217 case 2: /* vccio1 */ 218 case 4: /* vccio3 */ 219 case 5: /* vccio4 */ 220 case 6: /* vccio5 */ 221 case 7: /* vccio6 */ 222 case 8: /* vccio7 */ 223 SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL0, 224 (1 << (sc->conf->supply[i].bit + 16)) | 225 (uvolt > MAX_1V8 ? 226 0 : 1 << sc->conf->supply[i].bit)); 227 SYSCON_WRITE_4(sc->grf, RK3568_PMUGRF_IO_VSEL1, 228 (1 << (sc->conf->supply[i].bit + 16)) | 229 (uvolt > MAX_1V8 ? 230 1 << sc->conf->supply[i].bit : 0)); 231 break; 232 default: 233 device_printf(sc->dev, "Index out of range\n"); 234 } 235 } 236 } 237 if (sc->conf->type != RK3568) 238 SYSCON_WRITE_4(sc->grf, sc->conf->grf_reg, reg | mask); 239 if (sc->conf->init != NULL) 240 sc->conf->init(sc); 241 242 return (0); 243 } 244 245 static int 246 rk_iodomain_probe(device_t dev) 247 { 248 249 if (!ofw_bus_status_okay(dev)) 250 return (ENXIO); 251 252 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) 253 return (ENXIO); 254 255 device_set_desc(dev, "RockChip IO Voltage Domain"); 256 return (BUS_PROBE_DEFAULT); 257 } 258 259 static int 260 rk_iodomain_attach(device_t dev) 261 { 262 struct rk_iodomain_softc *sc; 263 int rv; 264 265 sc = device_get_softc(dev); 266 sc->dev = dev; 267 sc->node = ofw_bus_get_node(dev); 268 269 rv = syscon_get_handle_default(dev, &sc->grf); 270 if (rv != 0) { 271 device_printf(dev, "Cannot get grf handle\n"); 272 return (ENXIO); 273 } 274 275 sc->conf = (struct rk_iodomain_conf *)ofw_bus_search_compatible(dev, compat_data)->ocd_data; 276 rv = rk_iodomain_set(sc); 277 278 return (rv); 279 } 280 281 static int 282 rk_iodomain_detach(device_t dev) 283 { 284 285 return (0); 286 } 287 288 static device_method_t rk_iodomain_methods[] = { 289 /* Device interface */ 290 DEVMETHOD(device_probe, rk_iodomain_probe), 291 DEVMETHOD(device_attach, rk_iodomain_attach), 292 DEVMETHOD(device_detach, rk_iodomain_detach), 293 294 DEVMETHOD_END 295 }; 296 297 static driver_t rk_iodomain_driver = { 298 "rk_iodomain", 299 rk_iodomain_methods, 300 sizeof(struct rk_iodomain_softc), 301 }; 302 303 EARLY_DRIVER_MODULE(rk_iodomain, simplebus, rk_iodomain_driver, 0, 0, 304 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE); 305