j720kbd.c revision 1.1.8.2
1 /* $NetBSD: j720kbd.c,v 1.1.8.2 2006/04/22 11:37:28 simonb 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 1.1.8.2 2006/04/22 11:37:28 simonb 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 #include <hpcarm/dev/sed1356var.h> 63 64 #ifdef DEBUG 65 #define DPRINTF(arg) printf arg 66 #else 67 #define DPRINTF(arg) /* nothing */ 68 #endif 69 70 struct j720kbd_chip { 71 int scc_enabled; 72 73 struct j720ssp_softc *scc_ssp; 74 75 struct hpckbd_ic_if scc_if; 76 struct hpckbd_if *scc_hpckbd; 77 }; 78 79 struct j720kbd_softc { 80 struct device sc_dev; 81 82 struct j720kbd_chip *sc_chip; 83 void *sc_ih; 84 }; 85 86 static struct j720kbd_chip j720kbd_chip; 87 88 static int j720kbd_match(struct device *, struct cfdata *, void *); 89 static void j720kbd_attach(struct device *, struct device *, void *); 90 91 static void j720kbd_cnattach(void); 92 static void j720kbd_ifsetup(struct j720kbd_chip *); 93 static int j720kbd_input_establish(void *, struct hpckbd_if *); 94 static int j720kbd_intr(void *); 95 static int j720kbd_poll(void *); 96 static void j720kbd_read(struct j720kbd_chip *, char *); 97 static int j720kbd_button_event(void *, int, long, void *); 98 99 CFATTACH_DECL(j720kbd, sizeof(struct device), 100 j720kbd_match, j720kbd_attach, NULL, NULL); 101 102 103 static int 104 j720kbd_match(struct device *parent, struct cfdata *cf, void *aux) 105 { 106 107 if (!platid_match(&platid, &platid_mask_MACH_HP_JORNADA_7XX)) 108 return 0; 109 if (strcmp(cf->cf_name, "j720kbd") != 0) 110 return 0; 111 112 return 1; 113 } 114 115 static void 116 j720kbd_attach(struct device *parent, struct device *self, void *aux) 117 { 118 struct j720kbd_softc *sc = (void *)self; 119 struct hpckbd_attach_args haa; 120 121 sc->sc_chip = &j720kbd_chip; 122 sc->sc_chip->scc_ssp = (struct j720ssp_softc *)parent; 123 sc->sc_chip->scc_enabled = 0; 124 125 /* Attach console if not using serial. */ 126 if (!(bootinfo->bi_cnuse & BI_CNUSE_SERIAL)) 127 j720kbd_cnattach(); 128 129 j720kbd_ifsetup(sc->sc_chip); 130 131 /* Install interrupt handler. */ 132 if ((sc->sc_ih = sa11x0_intr_establish(0, 0, 1, IPL_TTY, 133 j720kbd_intr, sc)) == NULL) { 134 printf(": can't establish interrupt\n"); 135 return; 136 } 137 printf("\n"); 138 139 /* Add config hook for light button event. */ 140 config_hook(CONFIG_HOOK_BUTTONEVENT, 141 CONFIG_HOOK_BUTTONEVENT_LIGHT, 142 CONFIG_HOOK_SHARE, j720kbd_button_event, sc); 143 144 /* Attach hpckbd. */ 145 haa.haa_ic = &sc->sc_chip->scc_if; 146 config_found(self, &haa, hpckbd_print); 147 } 148 149 static void 150 j720kbd_cnattach(void) 151 { 152 struct j720kbd_chip *scc = &j720kbd_chip; 153 154 /* Initialize interface. */ 155 j720kbd_ifsetup(scc); 156 157 /* Attach console. */ 158 hpckbd_cnattach(&scc->scc_if); 159 } 160 161 static void 162 j720kbd_ifsetup(struct j720kbd_chip *scc) 163 { 164 165 scc->scc_if.hii_ctx = scc; 166 scc->scc_if.hii_establish = j720kbd_input_establish; 167 scc->scc_if.hii_poll = j720kbd_poll; 168 } 169 170 static int 171 j720kbd_input_establish(void *ic, struct hpckbd_if *kbdif) 172 { 173 struct j720kbd_chip *scc = ic; 174 175 /* Save hpckbd interface. */ 176 scc->scc_hpckbd = kbdif; 177 178 scc->scc_enabled = 1; 179 180 return 0; 181 } 182 183 static int 184 j720kbd_intr(void *arg) 185 { 186 struct j720kbd_softc *sc = arg; 187 struct j720ssp_softc *ssp = sc->sc_chip->scc_ssp; 188 189 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_EDR, 1); 190 191 return j720kbd_poll(sc->sc_chip); 192 } 193 194 static int 195 j720kbd_poll(void *arg) 196 { 197 struct j720kbd_chip *scc = arg; 198 int type, key; 199 char buf[9], *p; 200 201 if (!scc->scc_enabled) { 202 DPRINTF(("j720kbd_poll: !scc_enabled\n")); 203 return 0; 204 } 205 206 j720kbd_read(scc, buf); 207 208 for (p = buf; *p; p++) { 209 type = *p & 0x80 ? 0 : 1; 210 key = *p & 0x7f; 211 212 hpckbd_input(scc->scc_hpckbd, type, key); 213 } 214 215 return 1; 216 } 217 218 static void 219 j720kbd_read(struct j720kbd_chip *scc, char *buf) 220 { 221 struct j720ssp_softc *ssp = scc->scc_ssp; 222 int data, count; 223 224 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PCR, 0x2000000); 225 226 /* Send scan keycode command. */ 227 if (j720ssp_readwrite(ssp, 1, 0x900, &data, 500) < 0 || data != 0x88) { 228 DPRINTF(("j720kbd_read: no dummy received\n")); 229 goto out; 230 } 231 232 /* Read number of scancodes available. */ 233 if (j720ssp_readwrite(ssp, 0, 0x8800, &data, 500) < 0) { 234 DPRINTF(("j720kbd_read: unable to read number of scancodes\n")); 235 goto out; 236 } 237 J720SSP_INVERT(data); 238 count = data; 239 240 for (; count; count--) { 241 if (j720ssp_readwrite(ssp, 0, 0x8800, &data, 100) < 0) 242 goto out; 243 J720SSP_INVERT(data); 244 *buf++ = data; 245 } 246 *buf = 0; 247 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 248 249 return; 250 251 out: 252 *buf = 0; 253 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 254 255 /* reset SSP */ 256 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x307); 257 delay(100); 258 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x387); 259 260 DPRINTF(("j720kbd_read: error %x\n", data)); 261 } 262 263 static int 264 j720kbd_button_event(void *ctx, int type, long id, void *msg) 265 { 266 267 if (type != CONFIG_HOOK_BUTTONEVENT || 268 id != CONFIG_HOOK_BUTTONEVENT_LIGHT) 269 return 0; 270 271 sed1356_toggle_lcdlight(); 272 273 return 1; 274 } 275
Indexes created Thu Oct 02 01:09:59 GMT 2025