vrc4172pwm.c revision 1.1
1 /* $NetBSD: vrc4172pwm.c,v 1.1 2000/11/11 04:42:09 sato Exp $ */ 2 3 /* 4 * Copyright (c) 2000 SATO Kazumi. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/device.h> 31 #include <sys/reboot.h> 32 33 #include <machine/bus.h> 34 #include <machine/config_hook.h> 35 #include <machine/platid.h> 36 37 #include <hpcmips/vr/vrc4172pwmvar.h> 38 #include <hpcmips/vr/vrc4172pwmreg.h> 39 40 41 #ifdef VRC2PWMDEBUG 42 #ifndef VRC2PWMDEBUG_CONF 43 #define VRC2PWMDEBUG_CONF 0 44 #endif /* VRC2PWMDEBUG_CONF */ 45 int vrc4172pwmdebug = VRC2PWMDEBUG_CONF; 46 #define DPRINTF(arg) if (vrc4172pwmdebug) printf arg; 47 #define VPRINTF(arg) if (bootverbose||vrc4172pwmdebug) printf arg; 48 #define VDUMPREG(arg) if (bootverbose||vrc4172pwmdebug) vrc4172_dumpreg arg; 49 #else /* VRC2PWMDEBUG */ 50 #define DPRINTF(arg) 51 #define VPRINTF(arg) if (bootverbose) printf arg; 52 #define VDUMPREG(arg) if (bootverbose) vrc4172_dumpreg arg; 53 #endif /* VRC2PWMDEBUG */ 54 55 static int vrc4172pwmmatch __P((struct device *, struct cfdata *, void *)); 56 static void vrc4172pwmattach __P((struct device *, struct device *, void *)); 57 58 static void vrc4172pwm_write __P((struct vrc4172pwm_softc *, int, unsigned short)); 59 static unsigned short vrc4172pwm_read __P((struct vrc4172pwm_softc *, int)); 60 61 static int vrc4172pwm_event __P((void *, int, long, void *)); 62 static int vrc4172pwm_pmevent __P((void *, int, long, void *)); 63 64 static void vrc4172pwm_dumpreg __P((struct vrc4172pwm_softc *)); 65 static void vrc4172pwm_init_brightness __P((void)); 66 67 68 struct cfattach vrc4172pwm_ca = { 69 sizeof(struct vrc4172pwm_softc), vrc4172pwmmatch, vrc4172pwmattach 70 }; 71 72 struct vrc4172pwm_softc *this_pwm; 73 74 static inline void 75 vrc4172pwm_write(sc, port, val) 76 struct vrc4172pwm_softc *sc; 77 int port; 78 unsigned short val; 79 { 80 bus_space_write_2(sc->sc_iot, sc->sc_ioh, port, val); 81 } 82 83 static inline unsigned short 84 vrc4172pwm_read(sc, port) 85 struct vrc4172pwm_softc *sc; 86 int port; 87 { 88 return bus_space_read_2(sc->sc_iot, sc->sc_ioh, port); 89 } 90 91 static int 92 vrc4172pwmmatch(parent, cf, aux) 93 struct device *parent; 94 struct cfdata *cf; 95 void *aux; 96 { 97 return 1; 98 } 99 100 static void 101 vrc4172pwmattach(parent, self, aux) 102 struct device *parent; 103 struct device *self; 104 void *aux; 105 { 106 struct vrc4172pwm_softc *sc = (struct vrc4172pwm_softc *)self; 107 struct vrip_attach_args *va = aux; 108 109 bus_space_tag_t iot = va->va_iot; 110 bus_space_handle_t ioh; 111 112 if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) { 113 printf(": can't map bus space\n"); 114 return; 115 } 116 117 sc->sc_iot = iot; 118 sc->sc_ioh = ioh; 119 120 printf("\n"); 121 122 VDUMPREG(sc); 123 /* basic setup */ 124 sc->sc_pmhook = config_hook(CONFIG_HOOK_PMEVENT, 125 CONFIG_PMEVENT_HARDPOWER, 126 CONFIG_HOOK_SHARE, 127 vrc4172pwm_pmevent, sc); 128 sc->sc_hook = config_hook(CONFIG_HOOK_POWERCONTROL, 129 CONFIG_POWERCONTROL_LCDLIGHT, 130 CONFIG_HOOK_SHARE, 131 vrc4172pwm_event, sc); 132 sc->sc_sethook = config_hook(CONFIG_HOOK_SET, 133 CONFIG_SET_BRIGHTNESS, 134 CONFIG_HOOK_SHARE, 135 vrc4172pwm_event, sc); 136 sc->sc_gethook = config_hook(CONFIG_HOOK_GET, 137 CONFIG_GET_BRIGHTNESS, 138 CONFIG_HOOK_SHARE, 139 vrc4172pwm_event, sc); 140 141 vr4172pwm_init_brightness(); 142 this_pwm = sc; 143 } 144 145 146 /* 147 * PWM config hook events 148 * 149 */ 150 int 151 vrc4172pwm_event(ctx, type, id, msg) 152 void *ctx; 153 int type; 154 long id; 155 void *msg; 156 { 157 struct vrc4172pwm_softc *sc = (struct vrc4172pwm_softc *)ctx; 158 int why =(int)msg; 159 160 if (type == CONFIG_HOOK_POWERCONTROL 161 && id == CONFIG_HOOK_POWERCONTROL_LCDLIGHT) { 162 vrc4172pwm_light(why); 163 } else if (type == CONFIG_HOOK_GET 164 && id == CONFIG_HOOL_GET_BRIGHTNESS) { 165 *(int *)msg = vr4172pwm_get_brightness(sc); 166 } else if (type == CONFIG_HOOK_SET 167 && id == CONFIG_HOOL_GET_BRIGHTNESS) { 168 vr4172pwm_set_brightness(sc, *(int *)msg); 169 } else 170 return 1; 171 172 return (0); 173 } 174 175 176 /* 177 * PWM config hook events 178 * 179 */ 180 int 181 vrc4172pwm_pmevent(ctx, type, id, msg) 182 void *ctx; 183 int type; 184 long id; 185 void *msg; 186 { 187 struct vrc4172pwm_softc *sc = (struct vrc4172pwm_softc *)ctx; 188 int why =(int)msg; 189 190 if (type != CONFIG_HOOK_PMEVENT) 191 return 1; 192 193 switch (why) { 194 } 195 return (0); 196 } 197 198 /* 199 * dump pwm registers 200 */ 201 void 202 vrc4172pwm_dumpreg(sc) 203 struct vrc4172pwm_softc *sc; 204 { 205 int en, freq, duty; 206 207 en = vrc4172pwm_read(sc, VRC2_PWM_LCDDUTYEN); 208 freq = vrc4172pwm_read(sc, VRC2_PWM_LCDFREQ); 209 duty = vrc4172pwm_read(sc, VRC2_PWM_LCDDUTY); 210 211 printf("vrc4172pwm: lightenable = %d, freq = 0x%x, duty = 0x%x\n", 212 en, freq, duty); 213 } 214 /* end */ 215
Indexes created Mon Sep 29 13:09:55 GMT 2025