ipaq_atmelgpio.c revision 1.2.2.2
1 1.2.2.2 lukem /* $NetBSD: ipaq_atmelgpio.c,v 1.2.2.2 2001/08/03 04:11:32 lukem Exp $ */ 2 1.2.2.2 lukem 3 1.2.2.2 lukem /*- 4 1.2.2.2 lukem * Copyright (c) 2001 The NetBSD Foundation, Inc. All rights reserved. 5 1.2.2.2 lukem * 6 1.2.2.2 lukem * This code is derived from software contributed to The NetBSD Foundation 7 1.2.2.2 lukem * by Ichiro FUKUHARA (ichiro (at) ichiro.org). 8 1.2.2.2 lukem * 9 1.2.2.2 lukem * Redistribution and use in source and binary forms, with or without 10 1.2.2.2 lukem * modification, are permitted provided that the following conditions 11 1.2.2.2 lukem * are met: 12 1.2.2.2 lukem * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 lukem * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 lukem * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.2.2 lukem * notice, this list of conditions and the following disclaimer in the 16 1.2.2.2 lukem * documentation and/or other materials provided with the distribution. 17 1.2.2.2 lukem * 3. All advertising materials mentioning features or use of this software 18 1.2.2.2 lukem * must display the following acknowledgement: 19 1.2.2.2 lukem * This product includes software developed by the NetBSD 20 1.2.2.2 lukem * Foundation, Inc. and its contributors. 21 1.2.2.2 lukem * 4. Neither the name of The NetBSD Foundation nor the names of its 22 1.2.2.2 lukem * contributors may be used to endorse or promote products derived 23 1.2.2.2 lukem * from this software without specific prior written permission. 24 1.2.2.2 lukem * 25 1.2.2.2 lukem * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 1.2.2.2 lukem * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.2.2 lukem * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.2.2 lukem * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 1.2.2.2 lukem * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.2.2 lukem * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.2.2 lukem * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.2.2 lukem * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.2.2 lukem * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.2.2 lukem * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.2.2 lukem * POSSIBILITY OF SUCH DAMAGE. 36 1.2.2.2 lukem */ 37 1.2.2.2 lukem /* 38 1.2.2.2 lukem * iPAQ uses Atmel microcontroller to service a few of peripheral devices. 39 1.2.2.2 lukem * This controller connect to UART1 of SA11x0. 40 1.2.2.2 lukem */ 41 1.2.2.2 lukem 42 1.2.2.2 lukem #include <sys/param.h> 43 1.2.2.2 lukem #include <sys/systm.h> 44 1.2.2.2 lukem #include <sys/types.h> 45 1.2.2.2 lukem #include <sys/conf.h> 46 1.2.2.2 lukem #include <sys/file.h> 47 1.2.2.2 lukem #include <sys/device.h> 48 1.2.2.2 lukem #include <sys/kernel.h> 49 1.2.2.2 lukem #include <sys/kthread.h> 50 1.2.2.2 lukem #include <sys/malloc.h> 51 1.2.2.2 lukem 52 1.2.2.2 lukem #include <machine/bus.h> 53 1.2.2.2 lukem 54 1.2.2.2 lukem #include <hpcarm/dev/ipaq_saipvar.h> 55 1.2.2.2 lukem #include <hpcarm/dev/ipaq_gpioreg.h> 56 1.2.2.2 lukem #include <hpcarm/dev/ipaq_atmel.h> 57 1.2.2.2 lukem #include <hpcarm/dev/ipaq_atmelvar.h> 58 1.2.2.2 lukem #include <hpcarm/sa11x0/sa11x0_gpioreg.h> 59 1.2.2.2 lukem #include <hpcarm/sa11x0/sa11x0_comreg.h> 60 1.2.2.2 lukem #include <hpcarm/sa11x0/sa11x0_reg.h> 61 1.2.2.2 lukem 62 1.2.2.2 lukem #ifdef ATMEL_DEBUG 63 1.2.2.2 lukem #define DPRINTF(x) printf x 64 1.2.2.2 lukem #else 65 1.2.2.2 lukem #define DPRINTF(x) 66 1.2.2.2 lukem #endif 67 1.2.2.2 lukem 68 1.2.2.2 lukem static int atmelgpio_match(struct device *, struct cfdata *, void *); 69 1.2.2.2 lukem static void atmelgpio_attach(struct device *, struct device *, void *); 70 1.2.2.2 lukem static int atmelgpio_print(void *, const char *); 71 1.2.2.2 lukem static int atmelgpio_search(struct device *, struct cfdata *, void *); 72 1.2.2.2 lukem static void atmelgpio_init(struct atmelgpio_softc *); 73 1.2.2.2 lukem 74 1.2.2.2 lukem static void rxtx_data(struct atmelgpio_softc *, int, int, 75 1.2.2.2 lukem u_int8_t *, struct atmel_rx *); 76 1.2.2.2 lukem 77 1.2.2.2 lukem struct cfattach atmelgpio_ca = { 78 1.2.2.2 lukem sizeof(struct atmelgpio_softc), atmelgpio_match, atmelgpio_attach 79 1.2.2.2 lukem }; 80 1.2.2.2 lukem 81 1.2.2.2 lukem static int 82 1.2.2.2 lukem atmelgpio_match(parent, cf, aux) 83 1.2.2.2 lukem struct device *parent; 84 1.2.2.2 lukem struct cfdata *cf; 85 1.2.2.2 lukem void *aux; 86 1.2.2.2 lukem { 87 1.2.2.2 lukem return (1); 88 1.2.2.2 lukem } 89 1.2.2.2 lukem 90 1.2.2.2 lukem static void 91 1.2.2.2 lukem atmelgpio_attach(parent, self, aux) 92 1.2.2.2 lukem struct device *parent; 93 1.2.2.2 lukem struct device *self; 94 1.2.2.2 lukem void *aux; 95 1.2.2.2 lukem { 96 1.2.2.2 lukem struct atmelgpio_softc *sc = (struct atmelgpio_softc *)self; 97 1.2.2.2 lukem struct ipaq_softc *psc = (struct ipaq_softc *)parent; 98 1.2.2.2 lukem 99 1.2.2.2 lukem struct atmel_rx *rxbuf; 100 1.2.2.2 lukem 101 1.2.2.2 lukem printf("\n"); 102 1.2.2.2 lukem printf("%s: Atmel microcontroller GPIO\n", sc->sc_dev.dv_xname); 103 1.2.2.2 lukem 104 1.2.2.2 lukem sc->sc_iot = psc->sc_iot; 105 1.2.2.2 lukem sc->sc_ioh = psc->sc_ioh; 106 1.2.2.2 lukem sc->sc_parent = (struct ipaq_softc *)parent; 107 1.2.2.2 lukem 108 1.2.2.2 lukem if (bus_space_map(sc->sc_iot, SACOM1_BASE, SACOM_NPORTS, 0, 109 1.2.2.2 lukem &sc->sc_ioh)) { 110 1.2.2.2 lukem printf("%s: unable to map of UART1 registers\n", sc->sc_dev.dv_xname); 111 1.2.2.2 lukem return; 112 1.2.2.2 lukem } 113 1.2.2.2 lukem 114 1.2.2.2 lukem atmelgpio_init(sc); 115 1.2.2.2 lukem 116 1.2.2.2 lukem #if 1 /* this is sample */ 117 1.2.2.2 lukem rxtx_data(sc, STATUS_BATTERY, 0, NULL, rxbuf); 118 1.2.2.2 lukem 119 1.2.2.2 lukem printf("ac_status = %x\n", rxbuf->data[0]); 120 1.2.2.2 lukem printf("Battery kind = %x\n", rxbuf->data[1]); 121 1.2.2.2 lukem printf("Voltage = %d mV\n", 122 1.2.2.2 lukem 1000 * (rxbuf->data[3] << 8 | rxbuf->data[2]) /228); 123 1.2.2.2 lukem printf("Battery Status = %x\n", rxbuf->data[4]); 124 1.2.2.2 lukem printf("Battery percentage = %d\n", 125 1.2.2.2 lukem 425 * (rxbuf->data[3] << 8 | rxbuf->data[2]) /1000 - 298); 126 1.2.2.2 lukem #endif 127 1.2.2.2 lukem 128 1.2.2.2 lukem /* 129 1.2.2.2 lukem * Attach each devices 130 1.2.2.2 lukem */ 131 1.2.2.2 lukem 132 1.2.2.2 lukem config_search(atmelgpio_search, self, NULL); 133 1.2.2.2 lukem } 134 1.2.2.2 lukem 135 1.2.2.2 lukem static int 136 1.2.2.2 lukem atmelgpio_search(parent, cf, aux) 137 1.2.2.2 lukem struct device *parent; 138 1.2.2.2 lukem struct cfdata *cf; 139 1.2.2.2 lukem void *aux; 140 1.2.2.2 lukem { 141 1.2.2.2 lukem if ((*cf->cf_attach->ca_match)(parent, cf, NULL) > 0) 142 1.2.2.2 lukem config_attach(parent, cf, NULL, atmelgpio_print); 143 1.2.2.2 lukem return 0; 144 1.2.2.2 lukem } 145 1.2.2.2 lukem 146 1.2.2.2 lukem 147 1.2.2.2 lukem static int 148 1.2.2.2 lukem atmelgpio_print(aux, name) 149 1.2.2.2 lukem void *aux; 150 1.2.2.2 lukem const char *name; 151 1.2.2.2 lukem { 152 1.2.2.2 lukem return (UNCONF); 153 1.2.2.2 lukem } 154 1.2.2.2 lukem 155 1.2.2.2 lukem static void 156 1.2.2.2 lukem atmelgpio_init(sc) 157 1.2.2.2 lukem struct atmelgpio_softc *sc; 158 1.2.2.2 lukem { 159 1.2.2.2 lukem /* 8 bits no parity 1 stop bit */ 160 1.2.2.2 lukem bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACOM_CR0, CR0_DSS); 161 1.2.2.2 lukem 162 1.2.2.2 lukem /* Set baud rate 115k */ 163 1.2.2.2 lukem bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACOM_CR1, 0); 164 1.2.2.2 lukem bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACOM_CR2, SACOMSPEED(115200)); 165 1.2.2.2 lukem 166 1.2.2.2 lukem /* RX/TX enable, RX/TX FIFO interrupt enable */ 167 1.2.2.2 lukem bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACOM_CR3, 168 1.2.2.2 lukem (CR3_RXE | CR3_TXE | CR3_RIE | CR3_TIE)); 169 1.2.2.2 lukem } 170 1.2.2.2 lukem 171 1.2.2.2 lukem static void 172 1.2.2.2 lukem rxtx_data(sc, id, size, buf, rxbuf) 173 1.2.2.2 lukem struct atmelgpio_softc *sc; 174 1.2.2.2 lukem int id, size; 175 1.2.2.2 lukem u_int8_t *buf; 176 1.2.2.2 lukem struct atmel_rx *rxbuf; 177 1.2.2.2 lukem { 178 1.2.2.2 lukem int i, checksum, length, rx_data; 179 1.2.2.2 lukem u_int8_t data[MAX_SENDSIZE]; 180 1.2.2.2 lukem 181 1.2.2.2 lukem length = size + FRAME_OVERHEAD_SIZE; 182 1.2.2.2 lukem 183 1.2.2.2 lukem while (! (bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACOM_SR0) & SR0_TFS)) 184 1.2.2.2 lukem ; 185 1.2.2.2 lukem 186 1.2.2.2 lukem data[0] = (u_int8_t)FRAME_SOF; 187 1.2.2.2 lukem data[1] = (u_int8_t)((id << 4) | size); 188 1.2.2.2 lukem checksum = data[1]; 189 1.2.2.2 lukem i = 2; 190 1.2.2.2 lukem while (size--) { 191 1.2.2.2 lukem data[i++] = *buf; 192 1.2.2.2 lukem checksum += (u_int8_t)(*buf++); 193 1.2.2.2 lukem } 194 1.2.2.2 lukem data[length-1] = checksum; 195 1.2.2.2 lukem 196 1.2.2.2 lukem while (! (bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACOM_SR1) & SR1_TNF)) 197 1.2.2.2 lukem ; 198 1.2.2.2 lukem i = 0; 199 1.2.2.2 lukem while (i < length) 200 1.2.2.2 lukem bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACOM_DR, data[i++]); 201 1.2.2.2 lukem 202 1.2.2.2 lukem delay(10000); 203 1.2.2.2 lukem #if 0 204 1.2.2.2 lukem while (! (bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACOM_SR0) & 205 1.2.2.2 lukem (SR0_RID | SR0_RFS))) 206 1.2.2.2 lukem #endif 207 1.2.2.2 lukem rxbuf->state = STATE_SOF; 208 1.2.2.2 lukem while (bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACOM_SR1) & SR1_RNE) { 209 1.2.2.2 lukem 210 1.2.2.2 lukem rx_data = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACOM_DR); 211 1.2.2.2 lukem DPRINTF(("DATA = %x\n", rx_data)); 212 1.2.2.2 lukem 213 1.2.2.2 lukem switch (rxbuf->state) { 214 1.2.2.2 lukem case STATE_SOF: 215 1.2.2.2 lukem if (rx_data == FRAME_SOF) 216 1.2.2.2 lukem rxbuf->state = STATE_ID; 217 1.2.2.2 lukem break; 218 1.2.2.2 lukem case STATE_ID: 219 1.2.2.2 lukem rxbuf->id = (rx_data & 0xf0) >> 4; 220 1.2.2.2 lukem rxbuf->len = rx_data & 0x0f; 221 1.2.2.2 lukem rxbuf->idx = 0; 222 1.2.2.2 lukem rxbuf->checksum = rx_data; 223 1.2.2.2 lukem rxbuf->state = (rxbuf->len > 0 ) ? STATE_DATA : STATE_EOF; 224 1.2.2.2 lukem break; 225 1.2.2.2 lukem case STATE_DATA: 226 1.2.2.2 lukem rxbuf->checksum += rx_data; 227 1.2.2.2 lukem rxbuf->data[rxbuf->idx] = rx_data; 228 1.2.2.2 lukem if (++rxbuf->idx == rxbuf->len) 229 1.2.2.2 lukem rxbuf->state = STATE_EOF; 230 1.2.2.2 lukem break; 231 1.2.2.2 lukem case STATE_EOF: 232 1.2.2.2 lukem rxbuf->state = STATE_SOF; 233 1.2.2.2 lukem if (rx_data == FRAME_EOF || rx_data == rxbuf->checksum) 234 1.2.2.2 lukem DPRINTF(("frame EOF\n")); 235 1.2.2.2 lukem else 236 1.2.2.2 lukem DPRINTF(("BadFrame\n")); 237 1.2.2.2 lukem break; 238 1.2.2.2 lukem default: 239 1.2.2.2 lukem break; 240 1.2.2.2 lukem } 241 1.2.2.2 lukem } 242 1.2.2.2 lukem } 243
Indexes created Tue Sep 30 07:10:03 GMT 2025