466 lines
13 KiB
C
466 lines
13 KiB
C
/* $NetBSD: vrc4172pwm.c,v 1.18 2003/07/15 02:29:35 lukem Exp $ */
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/*
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* Copyright (c) 2000,2001 SATO Kazumi. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: vrc4172pwm.c,v 1.18 2003/07/15 02:29:35 lukem Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/reboot.h>
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#include <machine/bus.h>
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#include <machine/config_hook.h>
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#include <machine/platid.h>
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#include <machine/platid_mask.h>
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#include <hpcmips/vr/vr.h>
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#include <hpcmips/vr/vripif.h>
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#include <hpcmips/vr/vrc4172pwmvar.h>
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#include <hpcmips/vr/vrc4172pwmreg.h>
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#include "locators.h"
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#ifdef VRC2PWMDEBUG
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#ifndef VRC2PWMDEBUG_CONF
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#define VRC2PWMDEBUG_CONF 0
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#endif /* VRC2PWMDEBUG_CONF */
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int vrc4172pwmdebug = VRC2PWMDEBUG_CONF;
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#define DPRINTF(arg) if (vrc4172pwmdebug) printf arg;
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#define VPRINTF(arg) if (bootverbose||vrc4172pwmdebug) printf arg;
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#define VDUMPREG(arg) if (bootverbose||vrc4172pwmdebug) vrc4172pwm_dumpreg(arg);
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#else /* VRC2PWMDEBUG */
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#define DPRINTF(arg)
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#define VPRINTF(arg) if (bootverbose) printf arg;
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#define VDUMPREG(arg) if (bootverbose) vrc4172pwm_dumpreg(arg);
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#endif /* VRC2PWMDEBUG */
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static int vrc4172pwmprobe(struct device *, struct cfdata *, void *);
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static void vrc4172pwmattach(struct device *, struct device *, void *);
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static void vrc4172pwm_write(struct vrc4172pwm_softc *, int, unsigned short);
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static unsigned short vrc4172pwm_read(struct vrc4172pwm_softc *, int);
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static int vrc4172pwm_event(void *, int, long, void *);
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static int vrc4172pwm_pmevent(void *, int, long, void *);
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static void vrc4172pwm_dumpreg(struct vrc4172pwm_softc *);
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static void vrc4172pwm_init_brightness(struct vrc4172pwm_softc *);
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void vrc4172pwm_light(struct vrc4172pwm_softc *, int);
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int vrc4172pwm_get_light(struct vrc4172pwm_softc *);
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int vrc4172pwm_get_brightness(struct vrc4172pwm_softc *);
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void vrc4172pwm_set_brightness(struct vrc4172pwm_softc *, int);
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int vrc4172pwm_rawduty2brightness(struct vrc4172pwm_softc *);
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int vrc4172pwm_brightness2rawduty(struct vrc4172pwm_softc *);
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struct vrc4172pwm_param * vrc4172pwm_getparam(void);
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void vrc4172pwm_dumpreg(struct vrc4172pwm_softc *);
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CFATTACH_DECL(vrc4172pwm, sizeof(struct vrc4172pwm_softc),
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vrc4172pwmprobe, vrc4172pwmattach, NULL, NULL);
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/*
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* platform related parameters
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*/
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struct vrc4172pwm_param vrc4172pwm_mcr520_param = {
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1, /* probe broken */
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8, /* levels */
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{ 0x16, 0x1f, 0x24, 0x2a, 0x2f, 0x34, 0x3a, 0x3f }
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};
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struct vrc4172pwm_param vrc4172pwm_mcr530_param = {
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0,
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8, /* levels */
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{ 0x16, 0x1b, 0x20, 0x25, 0x2a, 0x30, 0x37, 0x3f }
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};
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struct vrc4172pwm_param vrc4172pwm_mcr700_param = {
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1, /* probe broken */
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8, /* levels */
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{ 0x12, 0x15, 0x18, 0x1d, 0x24, 0x2d, 0x38, 0x3f }
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};
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struct vrc4172pwm_param vrc4172pwm_sigmarion_param = {
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0,
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8, /* levels */
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{ 0xe, 0x13, 0x18, 0x1c, 0x23, 0x29, 0x32, 0x3f }
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};
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struct platid_data vrc4172pwm_platid_param_table[] = {
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{ &platid_mask_MACH_NEC_MCR_430, &vrc4172pwm_mcr530_param},
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{ &platid_mask_MACH_NEC_MCR_510, &vrc4172pwm_mcr520_param},
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{ &platid_mask_MACH_NEC_MCR_520, &vrc4172pwm_mcr520_param},
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{ &platid_mask_MACH_NEC_MCR_520A, &vrc4172pwm_mcr520_param},
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{ &platid_mask_MACH_NEC_MCR_530, &vrc4172pwm_mcr530_param},
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{ &platid_mask_MACH_NEC_MCR_530A, &vrc4172pwm_mcr530_param},
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{ &platid_mask_MACH_NEC_MCR_SIGMARION, &vrc4172pwm_sigmarion_param},
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{ &platid_mask_MACH_NEC_MCR_700, &vrc4172pwm_mcr700_param},
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{ &platid_mask_MACH_NEC_MCR_700A, &vrc4172pwm_mcr700_param},
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{ NULL, NULL}
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};
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struct vrc4172pwm_softc *this_pwm;
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static inline void
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vrc4172pwm_write(struct vrc4172pwm_softc *sc, int port, unsigned short val)
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{
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, port, val);
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}
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static inline unsigned short
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vrc4172pwm_read(struct vrc4172pwm_softc *sc, int port)
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{
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return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, port));
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}
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static int
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vrc4172pwmprobe(struct device *parent, struct cfdata *cf, void *aux)
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{
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platid_mask_t mask;
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struct vrip_attach_args *va = aux;
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bus_space_handle_t ioh;
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#ifdef VRC4172PWM_BROKEN_PROBE
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int probe = 0;
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#else /* VRC4172PWM_BROKEN_PROBE */
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int probe = 1;
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#endif /* VRC4172PWM_BROKEN_PROBE */
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int data;
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int data2;
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struct vrc4172pwm_param *param;
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int ret = 0;
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if (va->va_addr == VRIPIFCF_ADDR_DEFAULT)
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return (0);
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if (cf->cf_loc[VRIPIFCF_PLATFORM] == 0)
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return (0);
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if (cf->cf_loc[VRIPIFCF_PLATFORM] != -1) { /* if specify */
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mask = PLATID_DEREF(cf->cf_loc[VRIPIFCF_PLATFORM]);
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VPRINTF(("vrc4172pwmprobe: check platid\n"));
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if (platid_match(&platid, &mask) == 0)
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return (0);
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param = vrc4172pwm_getparam();
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if (param != NULL && param->brokenprobe)
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probe = 0;
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}
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if (probe) {
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if (bus_space_map(va->va_iot, va->va_addr, va->va_size, 0,
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&ioh)) {
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return (0);
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}
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data = bus_space_read_2(va->va_iot, ioh, VRC2_PWM_LCDDUTYEN);
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bus_space_write_2(va->va_iot, ioh, VRC2_PWM_LCDDUTYEN, 0xff);
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if ((data2 = bus_space_read_2(va->va_iot, ioh,
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VRC2_PWM_LCDDUTYEN)) == VRC2_PWM_LCDEN_MASK) {
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VPRINTF(("vrc4172pwmprobe:"
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" VRC2_PWM_LCDDUTYEN found\n"));
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ret = 1;
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} else {
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VPRINTF(("vrc4172pwmprobe: VRC2_PWM_LCDDUTYEN"
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" not found org=%x, data=%x!=%x\n",
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data, data2, VRC2_PWM_LCDEN_MASK));
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}
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bus_space_write_2(va->va_iot, ioh, VRC2_PWM_LCDDUTYEN, data);
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bus_space_unmap(va->va_iot, ioh, va->va_size);
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} else
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ret = 1;
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VPRINTF(("vrc4172pwmprobe: return %d\n", ret));
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return (ret);
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}
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static void
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vrc4172pwmattach(struct device *parent, struct device *self, void *aux)
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{
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struct vrc4172pwm_softc *sc = (struct vrc4172pwm_softc *)self;
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struct vrip_attach_args *va = aux;
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bus_space_tag_t iot = va->va_iot;
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bus_space_handle_t ioh;
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if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) {
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printf(": can't map bus space\n");
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return;
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}
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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printf("\n");
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VDUMPREG(sc);
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/* basic setup */
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sc->sc_pmhook = config_hook(CONFIG_HOOK_PMEVENT,
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CONFIG_HOOK_PMEVENT_HARDPOWER, CONFIG_HOOK_SHARE,
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vrc4172pwm_pmevent, sc);
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sc->sc_lcdhook = config_hook(CONFIG_HOOK_POWERCONTROL,
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CONFIG_HOOK_POWERCONTROL_LCDLIGHT, CONFIG_HOOK_SHARE,
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vrc4172pwm_event, sc);
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sc->sc_getlcdhook = config_hook(CONFIG_HOOK_GET,
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CONFIG_HOOK_POWER_LCDLIGHT, CONFIG_HOOK_SHARE,
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vrc4172pwm_event, sc);
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sc->sc_sethook = config_hook(CONFIG_HOOK_SET,
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CONFIG_HOOK_BRIGHTNESS, CONFIG_HOOK_SHARE,
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vrc4172pwm_event, sc);
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sc->sc_gethook = config_hook(CONFIG_HOOK_GET,
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CONFIG_HOOK_BRIGHTNESS, CONFIG_HOOK_SHARE,
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vrc4172pwm_event, sc);
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sc->sc_getmaxhook = config_hook(CONFIG_HOOK_GET,
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CONFIG_HOOK_BRIGHTNESS_MAX, CONFIG_HOOK_SHARE,
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vrc4172pwm_event, sc);
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vrc4172pwm_init_brightness(sc);
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if (sc->sc_param == NULL)
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printf("vrc4172pwm: NO parameter found. DISABLE pwm control\n");
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this_pwm = sc;
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}
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/*
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* get platform related brightness paramerters
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*/
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struct vrc4172pwm_param *
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vrc4172pwm_getparam()
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{
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struct platid_data *p;
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if ((p = platid_search_data(&platid, vrc4172pwm_platid_param_table)))
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return (p->data);
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return (NULL);
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}
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/*
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*
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* Initialize PWM brightness parameters
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*
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*/
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void
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vrc4172pwm_init_brightness(struct vrc4172pwm_softc *sc)
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{
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sc->sc_param = vrc4172pwm_getparam();
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sc->sc_raw_freq = vrc4172pwm_read(sc, VRC2_PWM_LCDFREQ);
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sc->sc_raw_duty = vrc4172pwm_read(sc, VRC2_PWM_LCDDUTY);
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sc->sc_brightness = vrc4172pwm_rawduty2brightness(sc);
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sc->sc_light = vrc4172pwm_get_light(sc);
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DPRINTF(("vrc4172pwm_init_brightness: param=0x%x, freq=0x%x,"
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" duty=0x%x, blightness=%d light=%d\n", (int)sc->sc_param,
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sc->sc_raw_freq, sc->sc_raw_duty, sc->sc_brightness,
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sc->sc_light));
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}
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/*
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* backlight on/off
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*/
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void
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vrc4172pwm_light(struct vrc4172pwm_softc *sc, int on)
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{
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int brightness;
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DPRINTF(("vrc4172pwm_light: %s\n", on?"ON":"OFF"));
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if (on) {
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vrc4172pwm_set_brightness(sc, sc->sc_brightness);
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vrc4172pwm_write(sc, VRC2_PWM_LCDDUTYEN, VRC2_PWM_LCD_EN);
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} else {
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brightness = sc->sc_brightness; /* save */
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vrc4172pwm_set_brightness(sc, 0);
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/* need this, break sc->sc_brightness */
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sc->sc_brightness = brightness; /* resume */
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vrc4172pwm_write(sc, VRC2_PWM_LCDDUTYEN, VRC2_PWM_LCD_DIS);
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}
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sc->sc_light = on;
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}
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/*
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* get backlight on/off
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*/
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int
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vrc4172pwm_get_light(struct vrc4172pwm_softc *sc)
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{
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return (VRC2_PWM_LCDEN_MASK&vrc4172pwm_read(sc, VRC2_PWM_LCDDUTYEN));
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}
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/*
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* set brightness
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*/
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void
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vrc4172pwm_set_brightness(struct vrc4172pwm_softc *sc, int val)
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{
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int raw;
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if (sc->sc_param == NULL)
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return;
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if (val < 0)
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val = 0;
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if (val > VRC2_PWM_MAX_BRIGHTNESS)
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val = VRC2_PWM_MAX_BRIGHTNESS;
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if (val > sc->sc_param->n_brightness)
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val = sc->sc_param->n_brightness;
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sc->sc_brightness = val;
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raw = vrc4172pwm_brightness2rawduty(sc);
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vrc4172pwm_write(sc, VRC2_PWM_LCDDUTY, raw);
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DPRINTF(("vrc4172pwm_set_brightness: val=%d raw=0x%x\n", val, raw));
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}
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/*
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* get brightness
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*/
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int
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vrc4172pwm_get_brightness(struct vrc4172pwm_softc *sc)
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{
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if (sc->sc_param == NULL)
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return (VRC2_PWM_MAX_BRIGHTNESS);
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return (sc->sc_brightness);
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}
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/*
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* PWM duty to brightness
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*/
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int
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vrc4172pwm_rawduty2brightness(struct vrc4172pwm_softc *sc)
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{
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int i;
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if (sc->sc_param == NULL)
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return (VRC2_PWM_MAX_BRIGHTNESS);
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for (i = 0; i < sc->sc_param->n_brightness; i++) {
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if (sc->sc_raw_duty <= sc->sc_param->bvalues[i])
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break;
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}
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if (i >= sc->sc_param->n_brightness-1)
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return (sc->sc_param->n_brightness-1);
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else
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return (i);
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}
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/*
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* brightness to raw duty
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*/
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int
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vrc4172pwm_brightness2rawduty(struct vrc4172pwm_softc *sc)
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{
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if (sc->sc_param == NULL)
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return (VRC2_PWM_LCDDUTY_MASK);
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return (sc->sc_param->bvalues[sc->sc_brightness]);
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}
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/*
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* PWM config hook events
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*
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*/
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int
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vrc4172pwm_event(void *ctx, int type, long id, void *msg)
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{
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struct vrc4172pwm_softc *sc = (struct vrc4172pwm_softc *)ctx;
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int why =(int)msg;
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if (type == CONFIG_HOOK_POWERCONTROL
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&& id == CONFIG_HOOK_POWERCONTROL_LCDLIGHT) {
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DPRINTF(("vrc4172pwm:POWERCONTROL_LCDLIGHT: %d\n", why));
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vrc4172pwm_light(sc, why);
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} else if (type == CONFIG_HOOK_GET
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&& id == CONFIG_HOOK_POWER_LCDLIGHT) {
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*(int *)msg = vrc4172pwm_get_light(sc);
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DPRINTF(("vrc4172pwm:GET LCDLIGHT: %d\n", *(int *)msg));
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} else if (type == CONFIG_HOOK_GET
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&& id == CONFIG_HOOK_BRIGHTNESS) {
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*(int *)msg = vrc4172pwm_get_brightness(sc);
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DPRINTF(("vrc4172pwm:GET BRIGHTNESS: %d\n", *(int *)msg));
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} else if (type == CONFIG_HOOK_GET
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&& id == CONFIG_HOOK_BRIGHTNESS_MAX) {
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if (sc->sc_param == NULL)
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*(int *)msg = VRC2_PWM_MAX_BRIGHTNESS;
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else
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*(int *)msg = sc->sc_param->n_brightness-1;
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DPRINTF(("vrc4172pwm:GET MAX BRIGHTNESS: %d\n", *(int *)msg));
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} else if (type == CONFIG_HOOK_SET
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&& id == CONFIG_HOOK_BRIGHTNESS) {
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DPRINTF(("vrc4172pwm:SET BRIGHTNESS: %d\n", *(int *)msg));
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vrc4172pwm_set_brightness(sc, *(int *)msg);
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} else {
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DPRINTF(("vrc4172pwm:unknown event: type %d id %ld\n",
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type, id));
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return (1);
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}
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return (0);
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}
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/*
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* PWM config hook events
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*
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*/
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int
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vrc4172pwm_pmevent(void *ctx, int type, long id, void *msg)
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{
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struct vrc4172pwm_softc *sc = (struct vrc4172pwm_softc *)ctx;
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int why =(int)msg;
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if (type != CONFIG_HOOK_PMEVENT)
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return (1);
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switch (why) {
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case PWR_STANDBY:
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case PWR_SUSPEND:
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sc->sc_light_save = sc->sc_light;
|
|
vrc4172pwm_light(sc, 0);
|
|
break;
|
|
case PWR_RESUME:
|
|
vrc4172pwm_light(sc, sc->sc_light_save);
|
|
break;
|
|
default:
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* dump pwm registers
|
|
*/
|
|
void
|
|
vrc4172pwm_dumpreg(struct vrc4172pwm_softc *sc)
|
|
{
|
|
int en, freq, duty;
|
|
|
|
en = vrc4172pwm_read(sc, VRC2_PWM_LCDDUTYEN);
|
|
freq = vrc4172pwm_read(sc, VRC2_PWM_LCDFREQ);
|
|
duty = vrc4172pwm_read(sc, VRC2_PWM_LCDDUTY);
|
|
|
|
printf("vrc4172pwm: dumpreg: lightenable = %d,"
|
|
" freq = 0x%x, duty = 0x%x\n", en, freq, duty);
|
|
}
|
|
|
|
/* end */
|