j720kbd.c revision 1.2.4.3
1 /* $NetBSD: j720kbd.c,v 1.2.4.3 2006/12/30 20:46:02 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by IWAMOTO Toshihiro and Peter Postma. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* Jornada 720 keyboard driver. */ 40 41 #include <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: j720kbd.c,v 1.2.4.3 2006/12/30 20:46:02 yamt Exp $"); 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 #include <sys/kernel.h> 48 49 #include <machine/bootinfo.h> 50 #include <machine/config_hook.h> 51 #include <machine/platid.h> 52 #include <machine/platid_mask.h> 53 54 #include <arm/sa11x0/sa11x0_var.h> 55 #include <arm/sa11x0/sa11x0_gpioreg.h> 56 #include <arm/sa11x0/sa11x0_ppcreg.h> 57 #include <arm/sa11x0/sa11x0_sspreg.h> 58 59 #include <dev/hpc/hpckbdvar.h> 60 61 #include <hpcarm/dev/j720sspvar.h> 62 63 #ifdef DEBUG 64 #define DPRINTF(arg) printf arg 65 #else 66 #define DPRINTF(arg) /* nothing */ 67 #endif 68 69 struct j720kbd_chip { 70 int scc_enabled; 71 72 struct j720ssp_softc *scc_ssp; 73 74 struct hpckbd_ic_if scc_if; 75 struct hpckbd_if *scc_hpckbd; 76 }; 77 78 struct j720kbd_softc { 79 struct device sc_dev; 80 81 struct j720kbd_chip *sc_chip; 82 }; 83 84 static struct j720kbd_chip j720kbd_chip; 85 86 static int j720kbd_match(struct device *, struct cfdata *, void *); 87 static void j720kbd_attach(struct device *, struct device *, void *); 88 89 static void j720kbd_cnattach(void); 90 static void j720kbd_ifsetup(struct j720kbd_chip *); 91 static int j720kbd_input_establish(void *, struct hpckbd_if *); 92 static int j720kbd_intr(void *); 93 static int j720kbd_poll(void *); 94 static void j720kbd_read(struct j720kbd_chip *, char *); 95 96 CFATTACH_DECL(j720kbd, sizeof(struct j720kbd_softc), 97 j720kbd_match, j720kbd_attach, NULL, NULL); 98 99 100 static int 101 j720kbd_match(struct device *parent, struct cfdata *cf, void *aux) 102 { 103 104 if (!platid_match(&platid, &platid_mask_MACH_HP_JORNADA_7XX)) 105 return 0; 106 if (strcmp(cf->cf_name, "j720kbd") != 0) 107 return 0; 108 109 return 1; 110 } 111 112 static void 113 j720kbd_attach(struct device *parent, struct device *self, void *aux) 114 { 115 struct j720kbd_softc *sc = (void *)self; 116 struct hpckbd_attach_args haa; 117 118 printf("\n"); 119 120 sc->sc_chip = &j720kbd_chip; 121 sc->sc_chip->scc_ssp = (struct j720ssp_softc *)parent; 122 sc->sc_chip->scc_enabled = 0; 123 124 /* Attach console if not using serial. */ 125 if (!(bootinfo->bi_cnuse & BI_CNUSE_SERIAL)) 126 j720kbd_cnattach(); 127 128 j720kbd_ifsetup(sc->sc_chip); 129 130 /* Install interrupt handler. */ 131 sa11x0_intr_establish(0, 0, 1, IPL_TTY, j720kbd_intr, sc); 132 133 /* Attach hpckbd. */ 134 haa.haa_ic = &sc->sc_chip->scc_if; 135 config_found(self, &haa, hpckbd_print); 136 } 137 138 static void 139 j720kbd_cnattach(void) 140 { 141 struct j720kbd_chip *scc = &j720kbd_chip; 142 143 /* Initialize interface. */ 144 j720kbd_ifsetup(scc); 145 146 /* Attach console. */ 147 hpckbd_cnattach(&scc->scc_if); 148 } 149 150 static void 151 j720kbd_ifsetup(struct j720kbd_chip *scc) 152 { 153 154 scc->scc_if.hii_ctx = scc; 155 scc->scc_if.hii_establish = j720kbd_input_establish; 156 scc->scc_if.hii_poll = j720kbd_poll; 157 } 158 159 static int 160 j720kbd_input_establish(void *ic, struct hpckbd_if *kbdif) 161 { 162 struct j720kbd_chip *scc = ic; 163 164 /* Save hpckbd interface. */ 165 scc->scc_hpckbd = kbdif; 166 167 scc->scc_enabled = 1; 168 169 return 0; 170 } 171 172 static int 173 j720kbd_intr(void *arg) 174 { 175 struct j720kbd_softc *sc = arg; 176 struct j720ssp_softc *ssp = sc->sc_chip->scc_ssp; 177 178 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_EDR, 1); 179 180 return j720kbd_poll(sc->sc_chip); 181 } 182 183 static int 184 j720kbd_poll(void *arg) 185 { 186 struct j720kbd_chip *scc = arg; 187 int type, key; 188 char buf[9], *p; 189 190 if (!scc->scc_enabled) { 191 DPRINTF(("j720kbd_poll: !scc_enabled\n")); 192 return 0; 193 } 194 195 j720kbd_read(scc, buf); 196 197 for (p = buf; *p; p++) { 198 type = *p & 0x80 ? 0 : 1; 199 key = *p & 0x7f; 200 201 hpckbd_input(scc->scc_hpckbd, type, key); 202 } 203 204 return 1; 205 } 206 207 static void 208 j720kbd_read(struct j720kbd_chip *scc, char *buf) 209 { 210 struct j720ssp_softc *ssp = scc->scc_ssp; 211 int data, count; 212 213 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PCR, 0x2000000); 214 215 /* Send scan keycode command. */ 216 if (j720ssp_readwrite(ssp, 1, 0x90, &data, 500) < 0 || data != 0x11) { 217 DPRINTF(("j720kbd_read: no dummy received\n")); 218 goto out; 219 } 220 221 /* Read number of scancodes available. */ 222 if (j720ssp_readwrite(ssp, 0, 0x11, &data, 500) < 0) { 223 DPRINTF(("j720kbd_read: unable to read number of scancodes\n")); 224 goto out; 225 } 226 count = data; 227 228 for (; count; count--) { 229 if (j720ssp_readwrite(ssp, 0, 0x11, &data, 100) < 0) 230 goto out; 231 *buf++ = data; 232 } 233 *buf = 0; 234 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 235 236 return; 237 238 out: 239 *buf = 0; 240 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 241 242 /* reset SSP */ 243 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x307); 244 delay(100); 245 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x387); 246 247 DPRINTF(("j720kbd_read: error %x\n", data)); 248 } 249
Indexes created Thu Oct 02 01:09:59 GMT 2025