j720kbd.c revision 1.2.4.2
1 /* $NetBSD: j720kbd.c,v 1.2.4.2 2006/06/21 14:51:44 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 1.2.4.2 2006/06/21 14:51:44 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 #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 }; 84 85 static struct j720kbd_chip j720kbd_chip; 86 87 static int j720kbd_match(struct device *, struct cfdata *, void *); 88 static void j720kbd_attach(struct device *, struct device *, void *); 89 90 static void j720kbd_cnattach(void); 91 static void j720kbd_ifsetup(struct j720kbd_chip *); 92 static int j720kbd_input_establish(void *, struct hpckbd_if *); 93 static int j720kbd_intr(void *); 94 static int j720kbd_poll(void *); 95 static void j720kbd_read(struct j720kbd_chip *, char *); 96 static int j720kbd_button_event(void *, int, long, void *); 97 98 CFATTACH_DECL(j720kbd, sizeof(struct j720kbd_softc), 99 j720kbd_match, j720kbd_attach, NULL, NULL); 100 101 102 static int 103 j720kbd_match(struct device *parent, struct cfdata *cf, void *aux) 104 { 105 106 if (!platid_match(&platid, &platid_mask_MACH_HP_JORNADA_7XX)) 107 return 0; 108 if (strcmp(cf->cf_name, "j720kbd") != 0) 109 return 0; 110 111 return 1; 112 } 113 114 static void 115 j720kbd_attach(struct device *parent, struct device *self, void *aux) 116 { 117 struct j720kbd_softc *sc = (void *)self; 118 struct hpckbd_attach_args haa; 119 120 printf("\n"); 121 122 sc->sc_chip = &j720kbd_chip; 123 sc->sc_chip->scc_ssp = (struct j720ssp_softc *)parent; 124 sc->sc_chip->scc_enabled = 0; 125 126 /* Attach console if not using serial. */ 127 if (!(bootinfo->bi_cnuse & BI_CNUSE_SERIAL)) 128 j720kbd_cnattach(); 129 130 j720kbd_ifsetup(sc->sc_chip); 131 132 /* Install interrupt handler. */ 133 sa11x0_intr_establish(0, 0, 1, IPL_TTY, j720kbd_intr, sc); 134 135 /* Add config hook for light button event. */ 136 config_hook(CONFIG_HOOK_BUTTONEVENT, 137 CONFIG_HOOK_BUTTONEVENT_LIGHT, 138 CONFIG_HOOK_SHARE, j720kbd_button_event, sc); 139 140 /* Attach hpckbd. */ 141 haa.haa_ic = &sc->sc_chip->scc_if; 142 config_found(self, &haa, hpckbd_print); 143 } 144 145 static void 146 j720kbd_cnattach(void) 147 { 148 struct j720kbd_chip *scc = &j720kbd_chip; 149 150 /* Initialize interface. */ 151 j720kbd_ifsetup(scc); 152 153 /* Attach console. */ 154 hpckbd_cnattach(&scc->scc_if); 155 } 156 157 static void 158 j720kbd_ifsetup(struct j720kbd_chip *scc) 159 { 160 161 scc->scc_if.hii_ctx = scc; 162 scc->scc_if.hii_establish = j720kbd_input_establish; 163 scc->scc_if.hii_poll = j720kbd_poll; 164 } 165 166 static int 167 j720kbd_input_establish(void *ic, struct hpckbd_if *kbdif) 168 { 169 struct j720kbd_chip *scc = ic; 170 171 /* Save hpckbd interface. */ 172 scc->scc_hpckbd = kbdif; 173 174 scc->scc_enabled = 1; 175 176 return 0; 177 } 178 179 static int 180 j720kbd_intr(void *arg) 181 { 182 struct j720kbd_softc *sc = arg; 183 struct j720ssp_softc *ssp = sc->sc_chip->scc_ssp; 184 185 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_EDR, 1); 186 187 return j720kbd_poll(sc->sc_chip); 188 } 189 190 static int 191 j720kbd_poll(void *arg) 192 { 193 struct j720kbd_chip *scc = arg; 194 int type, key; 195 char buf[9], *p; 196 197 if (!scc->scc_enabled) { 198 DPRINTF(("j720kbd_poll: !scc_enabled\n")); 199 return 0; 200 } 201 202 j720kbd_read(scc, buf); 203 204 for (p = buf; *p; p++) { 205 type = *p & 0x80 ? 0 : 1; 206 key = *p & 0x7f; 207 208 hpckbd_input(scc->scc_hpckbd, type, key); 209 } 210 211 return 1; 212 } 213 214 static void 215 j720kbd_read(struct j720kbd_chip *scc, char *buf) 216 { 217 struct j720ssp_softc *ssp = scc->scc_ssp; 218 int data, count; 219 220 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PCR, 0x2000000); 221 222 /* Send scan keycode command. */ 223 if (j720ssp_readwrite(ssp, 1, 0x900, &data, 500) < 0 || data != 0x88) { 224 DPRINTF(("j720kbd_read: no dummy received\n")); 225 goto out; 226 } 227 228 /* Read number of scancodes available. */ 229 if (j720ssp_readwrite(ssp, 0, 0x8800, &data, 500) < 0) { 230 DPRINTF(("j720kbd_read: unable to read number of scancodes\n")); 231 goto out; 232 } 233 J720SSP_INVERT(data); 234 count = data; 235 236 for (; count; count--) { 237 if (j720ssp_readwrite(ssp, 0, 0x8800, &data, 100) < 0) 238 goto out; 239 J720SSP_INVERT(data); 240 *buf++ = data; 241 } 242 *buf = 0; 243 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 244 245 return; 246 247 out: 248 *buf = 0; 249 bus_space_write_4(ssp->sc_iot, ssp->sc_gpioh, SAGPIO_PSR, 0x2000000); 250 251 /* reset SSP */ 252 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x307); 253 delay(100); 254 bus_space_write_4(ssp->sc_iot, ssp->sc_ssph, SASSP_CR0, 0x387); 255 256 DPRINTF(("j720kbd_read: error %x\n", data)); 257 } 258 259 static int 260 j720kbd_button_event(void *ctx, int type, long id, void *msg) 261 { 262 263 if (type != CONFIG_HOOK_BUTTONEVENT || 264 id != CONFIG_HOOK_BUTTONEVENT_LIGHT) 265 return 0; 266 267 sed1356_toggle_lcdlight(); 268 269 return 1; 270 } 271
Indexes created Thu Oct 02 01:09:59 GMT 2025