/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2019 Michal Meloun * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); /* * Thermometer and thermal zones driver for RockChip SoCs. * Calibration data are taken from Linux, because this part of SoC * is undocumented in TRM. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "syscon_if.h" #include "rk_tsadc_if.h" /* Version of HW */ #define TSADC_V2 1 #define TSADC_V3 2 #define TSADC_V7 3 /* Global registers */ #define TSADC_USER_CON 0x000 #define TSADC_AUTO_CON 0x004 #define TSADC_AUTO_CON_POL_HI (1 << 8) #define TSADC_AUTO_SRC_EN(x) (1 << (4 + (x))) #define TSADC_AUTO_Q_SEL (1 << 1) /* V3 only */ #define TSADC_AUTO_CON_AUTO (1 << 0) #define TSADC_INT_EN 0x008 #define TSADC_INT_EN_2CRU_EN_SRC(x) (1 << (8 + (x))) #define TSADC_INT_EN_2GPIO_EN_SRC(x) (1 << (4 + (x))) #define TSADC_INT_PD 0x00c #define TSADC_DATA(x) (0x20 + (x) * 0x04) #define TSADC_COMP_INT(x) (0x30 + (x) * 0x04) #define TSADC_COMP_INT_SRC_EN(x) (1 << (0 + (x))) #define TSADC_COMP_SHUT(x) (0x40 + (x) * 0x04) #define TSADC_HIGHT_INT_DEBOUNCE 0x060 #define TSADC_HIGHT_TSHUT_DEBOUNCE 0x064 #define TSADC_AUTO_PERIOD 0x068 #define TSADC_AUTO_PERIOD_HT 0x06c #define TSADC_COMP0_LOW_INT 0x080 /* V3 only */ #define TSADC_COMP1_LOW_INT 0x084 /* V3 only */ /* V3 GFR registers */ #define GRF_SARADC_TESTBIT 0x0e644 #define GRF_SARADC_TESTBIT_ON (0x10001 << 2) #define GRF_TSADC_TESTBIT_L 0x0e648 #define GRF_TSADC_VCM_EN_L (0x10001 << 7) #define GRF_TSADC_TESTBIT_H 0x0e64c #define GRF_TSADC_VCM_EN_H (0x10001 << 7) #define GRF_TSADC_TESTBIT_H_ON (0x10001 << 2) /* V7 GRF register */ #define GRF_TSADC_CON 0x0600 #define GRF_TSADC_ANA_REG0 (0x10001 << 0) #define GRF_TSADC_ANA_REG1 (0x10001 << 1) #define GRF_TSADC_ANA_REG2 (0x10001 << 2) #define GRF_TSADC_TSEN (0x10001 << 8) #define WR4(_sc, _r, _v) bus_write_4((_sc)->mem_res, (_r), (_v)) #define RD4(_sc, _r) bus_read_4((_sc)->mem_res, (_r)) static struct sysctl_ctx_list tsadc_sysctl_ctx; struct tsensor { char *name; int id; int channel; }; struct rk_calib_entry { uint32_t raw; int temp; }; struct tsadc_calib_info { struct rk_calib_entry *table; int nentries; }; struct tsadc_conf { int version; int q_sel_ntc; int shutdown_temp; int shutdown_mode; int shutdown_pol; struct tsensor *tsensors; int ntsensors; struct tsadc_calib_info calib_info; }; struct tsadc_softc { device_t dev; struct resource *mem_res; struct resource *irq_res; void *irq_ih; clk_t tsadc_clk; clk_t apb_pclk_clk; hwreset_t hwreset; struct syscon *grf; struct tsadc_conf *conf; int shutdown_temp; int shutdown_mode; int shutdown_pol; int alarm_temp; }; static struct rk_calib_entry rk3288_calib_data[] = { {3800, -40000}, {3792, -35000}, {3783, -30000}, {3774, -25000}, {3765, -20000}, {3756, -15000}, {3747, -10000}, {3737, -5000}, {3728, 0}, {3718, 5000}, {3708, 10000}, {3698, 15000}, {3688, 20000}, {3678, 25000}, {3667, 30000}, {3656, 35000}, {3645, 40000}, {3634, 45000}, {3623, 50000}, {3611, 55000}, {3600, 60000}, {3588, 65000}, {3575, 70000}, {3563, 75000}, {3550, 80000}, {3537, 85000}, {3524, 90000}, {3510, 95000}, {3496, 100000}, {3482, 105000}, {3467, 110000}, {3452, 115000}, {3437, 120000}, {3421, 125000}, }; struct tsensor rk3288_tsensors[] = { { .channel = 0, .id = 2, .name = "reserved"}, { .channel = 1, .id = 0, .name = "CPU"}, { .channel = 2, .id = 1, .name = "GPU"}, }; struct tsadc_conf rk3288_tsadc_conf = { .version = TSADC_V2, .q_sel_ntc = 0, .shutdown_temp = 95000, .shutdown_mode = 1, /* GPIO */ .shutdown_pol = 0, /* Low */ .tsensors = rk3288_tsensors, .ntsensors = nitems(rk3288_tsensors), .calib_info = { .table = rk3288_calib_data, .nentries = nitems(rk3288_calib_data), } }; static struct rk_calib_entry rk3328_calib_data[] = { {296, -40000}, {304, -35000}, {313, -30000}, {331, -20000}, {340, -15000}, {349, -10000}, {359, -5000}, {368, 0}, {378, 5000}, {388, 10000}, {398, 15000}, {408, 20000}, {418, 25000}, {429, 30000}, {440, 35000}, {451, 40000}, {462, 45000}, {473, 50000}, {485, 55000}, {496, 60000}, {508, 65000}, {521, 70000}, {533, 75000}, {546, 80000}, {559, 85000}, {572, 90000}, {586, 95000}, {600, 100000}, {614, 105000}, {629, 110000}, {644, 115000}, {659, 120000}, {675, 125000}, }; static struct tsensor rk3328_tsensors[] = { { .channel = 0, .id = 0, .name = "CPU"}, }; static struct tsadc_conf rk3328_tsadc_conf = { .version = TSADC_V2, .q_sel_ntc = 1, .shutdown_temp = 95000, .shutdown_mode = 0, /* CRU */ .shutdown_pol = 0, /* Low */ .tsensors = rk3328_tsensors, .ntsensors = nitems(rk3328_tsensors), .calib_info = { .table = rk3328_calib_data, .nentries = nitems(rk3328_calib_data), } }; static struct rk_calib_entry rk3399_calib_data[] = { {402, -40000}, {410, -35000}, {419, -30000}, {427, -25000}, {436, -20000}, {444, -15000}, {453, -10000}, {461, -5000}, {470, 0}, {478, 5000}, {487, 10000}, {496, 15000}, {504, 20000}, {513, 25000}, {521, 30000}, {530, 35000}, {538, 40000}, {547, 45000}, {555, 50000}, {564, 55000}, {573, 60000}, {581, 65000}, {590, 70000}, {599, 75000}, {607, 80000}, {616, 85000}, {624, 90000}, {633, 95000}, {642, 100000}, {650, 105000}, {659, 110000}, {668, 115000}, {677, 120000}, {685, 125000}, }; static struct tsensor rk3399_tsensors[] = { { .channel = 0, .id = 0, .name = "CPU"}, { .channel = 1, .id = 1, .name = "GPU"}, }; static struct tsadc_conf rk3399_tsadc_conf = { .version = TSADC_V3, .q_sel_ntc = 1, .shutdown_temp = 95000, .shutdown_mode = 1, /* GPIO */ .shutdown_pol = 0, /* Low */ .tsensors = rk3399_tsensors, .ntsensors = nitems(rk3399_tsensors), .calib_info = { .table = rk3399_calib_data, .nentries = nitems(rk3399_calib_data), } }; static struct rk_calib_entry rk3568_calib_data[] = { {0, -40000}, {1584, -40000}, {1620, -35000}, {1652, -30000}, {1688, -25000}, {1720, -20000}, {1756, -15000}, {1788, -10000}, {1824, -5000}, {1856, 0}, {1892, 5000}, {1924, 10000}, {1956, 15000}, {1992, 20000}, {2024, 25000}, {2060, 30000}, {2092, 35000}, {2128, 40000}, {2160, 45000}, {2196, 50000}, {2228, 55000}, {2264, 60000}, {2300, 65000}, {2332, 70000}, {2368, 75000}, {2400, 80000}, {2436, 85000}, {2468, 90000}, {2500, 95000}, {2536, 100000}, {2572, 105000}, {2604, 110000}, {2636, 115000}, {2672, 120000}, {2704, 125000}, }; static struct tsensor rk3568_tsensors[] = { { .channel = 0, .id = 0, .name = "CPU"}, { .channel = 1, .id = 1, .name = "GPU"}, }; static struct tsadc_conf rk3568_tsadc_conf = { .version = TSADC_V7, .q_sel_ntc = 1, .shutdown_temp = 95000, .shutdown_mode = 1, /* GPIO */ .shutdown_pol = 0, /* Low */ .tsensors = rk3568_tsensors, .ntsensors = nitems(rk3568_tsensors), .calib_info = { .table = rk3568_calib_data, .nentries = nitems(rk3568_calib_data), } }; static struct ofw_compat_data compat_data[] = { {"rockchip,rk3288-tsadc", (uintptr_t)&rk3288_tsadc_conf}, {"rockchip,rk3328-tsadc", (uintptr_t)&rk3328_tsadc_conf}, {"rockchip,rk3399-tsadc", (uintptr_t)&rk3399_tsadc_conf}, {"rockchip,rk3568-tsadc", (uintptr_t)&rk3568_tsadc_conf}, {NULL, 0} }; static uint32_t tsadc_temp_to_raw(struct tsadc_softc *sc, int temp) { struct rk_calib_entry *tbl; int denom, ntbl, raw, i; tbl = sc->conf->calib_info.table; ntbl = sc->conf->calib_info.nentries; if (temp <= tbl[0].temp) return (tbl[0].raw); if (temp >= tbl[ntbl - 1].temp) return (tbl[ntbl - 1].raw); for (i = 1; i < (ntbl - 1); i++) { /* Exact match */ if (temp == tbl[i].temp) return (tbl[i].raw); if (temp < tbl[i].temp) break; } /* * Translated value is between i and i - 1 table entries. * Do linear interpolation for it. */ raw = (int)tbl[i - 1].raw - (int)tbl[i].raw; raw *= temp - tbl[i - 1].temp; denom = tbl[i - 1].temp - tbl[i].temp; raw = tbl[i - 1].raw + raw / denom; return (raw); } static int tsadc_raw_to_temp(struct tsadc_softc *sc, uint32_t raw) { struct rk_calib_entry *tbl; int denom, ntbl, temp, i; bool descending; tbl = sc->conf->calib_info.table; ntbl = sc->conf->calib_info.nentries; descending = tbl[0].raw > tbl[1].raw; if (descending) { /* Raw column is in descending order. */ if (raw >= tbl[0].raw) return (tbl[0].temp); if (raw <= tbl[ntbl - 1].raw) return (tbl[ntbl - 1].temp); for (i = ntbl - 2; i > 0; i--) { /* Exact match */ if (raw == tbl[i].raw) return (tbl[i].temp); if (raw < tbl[i].raw) break; } } else { /* Raw column is in ascending order. */ if (raw <= tbl[0].raw) return (tbl[0].temp); if (raw >= tbl[ntbl - 1].raw) return (tbl[ntbl - 1].temp); for (i = 1; i < (ntbl - 1); i++) { /* Exact match */ if (raw == tbl[i].raw) return (tbl[i].temp); if (raw < tbl[i].raw) break; } } /* * Translated value is between i and i - 1 table entries. * Do linear interpolation for it. */ temp = (int)tbl[i - 1].temp - (int)tbl[i].temp; temp *= raw - tbl[i - 1].raw; denom = tbl[i - 1].raw - tbl[i].raw; temp = tbl[i - 1].temp + temp / denom; return (temp); } static void tsadc_init_tsensor(struct tsadc_softc *sc, struct tsensor *sensor) { uint32_t val; /* Shutdown mode */ val = RD4(sc, TSADC_INT_EN); if (sc->shutdown_mode != 0) { /* Signal shutdown of GPIO pin */ val &= ~TSADC_INT_EN_2CRU_EN_SRC(sensor->channel); val |= TSADC_INT_EN_2GPIO_EN_SRC(sensor->channel); } else { val |= TSADC_INT_EN_2CRU_EN_SRC(sensor->channel); val &= ~TSADC_INT_EN_2GPIO_EN_SRC(sensor->channel); } WR4(sc, TSADC_INT_EN, val); /* Shutdown temperature */ val = tsadc_raw_to_temp(sc, sc->shutdown_temp); WR4(sc, TSADC_COMP_SHUT(sensor->channel), val); val = RD4(sc, TSADC_AUTO_CON); val |= TSADC_AUTO_SRC_EN(sensor->channel); WR4(sc, TSADC_AUTO_CON, val); /* Alarm temperature */ val = tsadc_temp_to_raw(sc, sc->alarm_temp); WR4(sc, TSADC_COMP_INT(sensor->channel), val); val = RD4(sc, TSADC_INT_EN); val |= TSADC_COMP_INT_SRC_EN(sensor->channel); WR4(sc, TSADC_INT_EN, val); } static void tsadc_init(struct tsadc_softc *sc) { uint32_t val; /* Common part */ val = 0; /* XXX Is this right? */ if (sc->shutdown_pol != 0) val |= TSADC_AUTO_CON_POL_HI; else val &= ~TSADC_AUTO_CON_POL_HI; if (sc->conf->q_sel_ntc) val |= TSADC_AUTO_Q_SEL; WR4(sc, TSADC_AUTO_CON, val); switch (sc->conf->version) { case TSADC_V2: /* V2 init */ WR4(sc, TSADC_AUTO_PERIOD, 250); /* 250 ms */ WR4(sc, TSADC_AUTO_PERIOD_HT, 50); /* 50 ms */ WR4(sc, TSADC_HIGHT_INT_DEBOUNCE, 4); WR4(sc, TSADC_HIGHT_TSHUT_DEBOUNCE, 4); break; case TSADC_V3: /* V3 init */ if (sc->grf == NULL) { /* Errata: adjust interleave to working value */ WR4(sc, TSADC_USER_CON, 13 << 6); /* 13 clks */ } else { SYSCON_WRITE_4(sc->grf, GRF_TSADC_TESTBIT_L, GRF_TSADC_VCM_EN_L); SYSCON_WRITE_4(sc->grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_VCM_EN_H); DELAY(30); /* 15 usec min */ SYSCON_WRITE_4(sc->grf, GRF_SARADC_TESTBIT, GRF_SARADC_TESTBIT_ON); SYSCON_WRITE_4(sc->grf, GRF_TSADC_TESTBIT_H, GRF_TSADC_TESTBIT_H_ON); DELAY(180); /* 90 usec min */ } WR4(sc, TSADC_AUTO_PERIOD, 1875); /* 2.5 ms */ WR4(sc, TSADC_AUTO_PERIOD_HT, 1875); /* 2.5 ms */ WR4(sc, TSADC_HIGHT_INT_DEBOUNCE, 4); WR4(sc, TSADC_HIGHT_TSHUT_DEBOUNCE, 4); break; case TSADC_V7: /* V7 init */ WR4(sc, TSADC_USER_CON, 0xfc0); /* 97us, at least 90us */ WR4(sc, TSADC_AUTO_PERIOD, 1622); /* 2.5ms */ WR4(sc, TSADC_HIGHT_INT_DEBOUNCE, 4); WR4(sc, TSADC_AUTO_PERIOD_HT, 1622); /* 2.5ms */ WR4(sc, TSADC_HIGHT_TSHUT_DEBOUNCE, 4); if (sc->grf) { SYSCON_WRITE_4(sc->grf, GRF_TSADC_CON, GRF_TSADC_TSEN); DELAY(15); /* 10 usec min */ SYSCON_WRITE_4(sc->grf, GRF_TSADC_CON, GRF_TSADC_ANA_REG0); SYSCON_WRITE_4(sc->grf, GRF_TSADC_CON, GRF_TSADC_ANA_REG1); SYSCON_WRITE_4(sc->grf, GRF_TSADC_CON, GRF_TSADC_ANA_REG2); DELAY(100); /* 90 usec min */ } break; } } static int tsadc_read_temp(struct tsadc_softc *sc, struct tsensor *sensor, int *temp) { uint32_t val; val = RD4(sc, TSADC_DATA(sensor->channel)); *temp = tsadc_raw_to_temp(sc, val); #ifdef DEBUG device_printf(sc->dev, "%s: Sensor(id: %d, ch: %d), val: %d temp: %d\n", __func__, sensor->id, sensor->channel, val, *temp); device_printf(sc->dev, "%s: user_con=0x%08x auto_con=0x%08x " "comp_int=0x%08x comp_shut=0x%08x\n", __func__, RD4(sc, TSADC_USER_CON), RD4(sc, TSADC_AUTO_CON), RD4(sc, TSADC_COMP_INT(sensor->channel)), RD4(sc, TSADC_COMP_SHUT(sensor->channel))); #endif return (0); } static int tsadc_get_temp(device_t dev, device_t cdev, uintptr_t id, int *val) { struct tsadc_softc *sc; int i, rv; sc = device_get_softc(dev); if (id >= sc->conf->ntsensors) return (ERANGE); for (i = 0; i < sc->conf->ntsensors; i++) { if (sc->conf->tsensors->id == id) { rv =tsadc_read_temp(sc, sc->conf->tsensors + id, val); return (rv); } } return (ERANGE); } static int tsadc_sysctl_temperature(SYSCTL_HANDLER_ARGS) { struct tsadc_softc *sc; int val; int rv; int id; /* Write request */ if (req->newptr != NULL) return (EINVAL); sc = arg1; id = arg2; if (id >= sc->conf->ntsensors) return (ERANGE); rv = tsadc_read_temp(sc, sc->conf->tsensors + id, &val); if (rv != 0) return (rv); val = val / 100; val += 2731; rv = sysctl_handle_int(oidp, &val, 0, req); return (rv); } static int tsadc_init_sysctl(struct tsadc_softc *sc) { int i; struct sysctl_oid *oid, *tmp; sysctl_ctx_init(&tsadc_sysctl_ctx); /* create node for hw.temp */ oid = SYSCTL_ADD_NODE(&tsadc_sysctl_ctx, SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, "temperature", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, ""); if (oid == NULL) return (ENXIO); /* Add sensors */ for (i = sc->conf->ntsensors - 1; i >= 0; i--) { tmp = SYSCTL_ADD_PROC(&tsadc_sysctl_ctx, SYSCTL_CHILDREN(oid), OID_AUTO, sc->conf->tsensors[i].name, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, i, tsadc_sysctl_temperature, "IK", "SoC Temperature"); if (tmp == NULL) return (ENXIO); } return (0); } static int tsadc_intr(void *arg) { struct tsadc_softc *sc; uint32_t val; sc = (struct tsadc_softc *)arg; val = RD4(sc, TSADC_INT_PD); WR4(sc, TSADC_INT_PD, val); /* XXX Handle shutdown and alarm interrupts. */ if (val & 0x00F0) { device_printf(sc->dev, "Alarm: device temperature " "is above of shutdown level.\n"); } else if (val & 0x000F) { device_printf(sc->dev, "Alarm: device temperature " "is above of alarm level.\n"); } return (FILTER_HANDLED); } static int tsadc_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "RockChip temperature sensors"); return (BUS_PROBE_DEFAULT); } static int tsadc_attach(device_t dev) { struct tsadc_softc *sc; phandle_t node; uint32_t val; int i, rid, rv; sc = device_get_softc(dev); sc->dev = dev; node = ofw_bus_get_node(sc->dev); sc->conf = (struct tsadc_conf *) ofw_bus_search_compatible(dev, compat_data)->ocd_data; sc->alarm_temp = 90000; rid = 0; sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->mem_res == NULL) { device_printf(dev, "Cannot allocate memory resources\n"); goto fail; } rid = 0; sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); if (sc->irq_res == NULL) { device_printf(dev, "Cannot allocate IRQ resources\n"); goto fail; } if ((bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, tsadc_intr, NULL, sc, &sc->irq_ih))) { device_printf(dev, "WARNING: unable to register interrupt handler\n"); goto fail; } /* FDT resources */ rv = hwreset_get_by_ofw_name(dev, 0, "tsadc-apb", &sc->hwreset); if (rv != 0) { device_printf(dev, "Cannot get 'tsadc-apb' reset\n"); goto fail; } rv = clk_get_by_ofw_name(dev, 0, "tsadc", &sc->tsadc_clk); if (rv != 0) { device_printf(dev, "Cannot get 'tsadc' clock: %d\n", rv); goto fail; } rv = clk_get_by_ofw_name(dev, 0, "apb_pclk", &sc->apb_pclk_clk); if (rv != 0) { device_printf(dev, "Cannot get 'apb_pclk' clock: %d\n", rv); goto fail; } /* grf is optional */ rv = syscon_get_by_ofw_property(dev, node, "rockchip,grf", &sc->grf); if (rv != 0 && rv != ENOENT) { device_printf(dev, "Cannot get 'grf' syscon: %d\n", rv); goto fail; } rv = OF_getencprop(node, "rockchip,hw-tshut-temp", &sc->shutdown_temp, sizeof(sc->shutdown_temp)); if (rv <= 0) sc->shutdown_temp = sc->conf->shutdown_temp; rv = OF_getencprop(node, "rockchip,hw-tshut-mode", &sc->shutdown_mode, sizeof(sc->shutdown_mode)); if (rv <= 0) sc->shutdown_mode = sc->conf->shutdown_mode; rv = OF_getencprop(node, "rockchip,hw-tshut-polarity", &sc->shutdown_pol, sizeof(sc->shutdown_pol)); if (rv <= 0) sc->shutdown_pol = sc->conf->shutdown_pol; /* Wakeup controller */ rv = hwreset_assert(sc->hwreset); if (rv != 0) { device_printf(dev, "Cannot assert reset\n"); goto fail; } /* Set the assigned clocks parent and freq */ rv = clk_set_assigned(sc->dev, node); if (rv != 0 && rv != ENOENT) { device_printf(dev, "clk_set_assigned failed\n"); goto fail; } rv = clk_enable(sc->tsadc_clk); if (rv != 0) { device_printf(dev, "Cannot enable 'tsadc_clk' clock: %d\n", rv); goto fail; } rv = clk_enable(sc->apb_pclk_clk); if (rv != 0) { device_printf(dev, "Cannot enable 'apb_pclk' clock: %d\n", rv); goto fail; } rv = hwreset_deassert(sc->hwreset); if (rv != 0) { device_printf(dev, "Cannot deassert reset\n"); goto fail; } tsadc_init(sc); for (i = 0; i < sc->conf->ntsensors; i++) tsadc_init_tsensor(sc, sc->conf->tsensors + i); /* Enable auto mode */ val = RD4(sc, TSADC_AUTO_CON); val |= TSADC_AUTO_CON_AUTO; WR4(sc, TSADC_AUTO_CON, val); rv = tsadc_init_sysctl(sc); if (rv != 0) { device_printf(sc->dev, "Cannot initialize sysctls\n"); goto fail_sysctl; } OF_device_register_xref(OF_xref_from_node(node), dev); return (bus_generic_attach(dev)); fail_sysctl: sysctl_ctx_free(&tsadc_sysctl_ctx); fail: if (sc->irq_ih != NULL) bus_teardown_intr(dev, sc->irq_res, sc->irq_ih); if (sc->tsadc_clk != NULL) clk_release(sc->tsadc_clk); if (sc->apb_pclk_clk != NULL) clk_release(sc->apb_pclk_clk); if (sc->hwreset != NULL) hwreset_release(sc->hwreset); if (sc->irq_res != NULL) bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); if (sc->mem_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); return (ENXIO); } static int tsadc_detach(device_t dev) { struct tsadc_softc *sc; sc = device_get_softc(dev); if (sc->irq_ih != NULL) bus_teardown_intr(dev, sc->irq_res, sc->irq_ih); sysctl_ctx_free(&tsadc_sysctl_ctx); if (sc->tsadc_clk != NULL) clk_release(sc->tsadc_clk); if (sc->apb_pclk_clk != NULL) clk_release(sc->apb_pclk_clk); if (sc->hwreset != NULL) hwreset_release(sc->hwreset); if (sc->irq_res != NULL) bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); if (sc->mem_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); return (ENXIO); } static device_method_t rk_tsadc_methods[] = { /* Device interface */ DEVMETHOD(device_probe, tsadc_probe), DEVMETHOD(device_attach, tsadc_attach), DEVMETHOD(device_detach, tsadc_detach), /* TSADC interface */ DEVMETHOD(rk_tsadc_get_temperature, tsadc_get_temp), DEVMETHOD_END }; static DEFINE_CLASS_0(rk_tsadc, rk_tsadc_driver, rk_tsadc_methods, sizeof(struct tsadc_softc)); EARLY_DRIVER_MODULE(rk_tsadc, simplebus, rk_tsadc_driver, NULL, NULL, BUS_PASS_TIMER + BUS_PASS_ORDER_LAST);