NetBSD-5.0.2/sys/arch/evbarm/g42xxeb/g42xxeb_lcd.c
/* $NetBSD: g42xxeb_lcd.c,v 1.11 2008/06/11 23:24:43 cegger Exp $ */
/*-
* Copyright (c) 2001, 2002, 2005 Genetec corp.
* All rights reserved.
*
* LCD driver for Genetec G4250EB-X002.
* Written by Hiroyuki Bessho for Genetec corp.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "opt_g42xxlcd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <dev/cons.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wscons_callbacks.h>
#include <machine/bus.h>
#include <arm/sa11x0/sa11x0_var.h>
#include <arm/xscale/pxa2x0var.h>
#include <arm/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0_lcd.h>
#include <arch/evbarm/g42xxeb/g42xxeb_reg.h>
#include <arch/evbarm/g42xxeb/g42xxeb_var.h>
#include "wsdisplay.h"
#include "ioconf.h"
int lcd_match( struct device *, struct cfdata *, void *);
void lcd_attach( struct device *, struct device *, void *);
int lcdintr(void *);
#if NWSDISPLAY > 0
/*
* wsdisplay glue
*/
struct pxa2x0_wsscreen_descr lcd_bpp16_screen = {
{
"bpp16", 0, 0,
&pxa2x0_lcd_emulops,
0, 0,
WSSCREEN_WSCOLORS,
},
16 /* bits per pixel */
}, lcd_bpp8_screen = {
{
"bpp8", 0, 0,
&pxa2x0_lcd_emulops,
0, 0,
WSSCREEN_WSCOLORS,
},
8 /* bits per pixel */
}, lcd_bpp4_screen = {
{
"bpp4", 0, 0,
&pxa2x0_lcd_emulops,
0, 0,
WSSCREEN_WSCOLORS,
},
4 /* bits per pixel */
};
static const struct wsscreen_descr *lcd_scr_descr[] = {
&lcd_bpp4_screen.c,
&lcd_bpp8_screen.c,
&lcd_bpp16_screen.c,
};
const struct wsscreen_list lcd_screen_list = {
sizeof lcd_scr_descr / sizeof lcd_scr_descr[0],
lcd_scr_descr
};
int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
int lcd_show_screen(void *, void *, int,
void (*)(void *, int, int), void *);
const struct wsdisplay_accessops lcd_accessops = {
lcd_ioctl,
pxa2x0_lcd_mmap,
pxa2x0_lcd_alloc_screen,
pxa2x0_lcd_free_screen,
lcd_show_screen,
NULL, /* load_font */
};
#else
/*
* Interface to LCD framebuffer without wscons
*/
dev_type_open(lcdopen);
dev_type_close(lcdclose);
dev_type_ioctl(lcdioctl);
dev_type_mmap(lcdmmap);
const struct cdevsw lcd_cdevsw = {
lcdopen, lcdclose, noread, nowrite,
lcdioctl, nostop, notty, nopoll, lcdmmap, D_TTY
};
#endif
CFATTACH_DECL(lcd_obio, sizeof (struct pxa2x0_lcd_softc), lcd_match, lcd_attach,
NULL, NULL);
int
lcd_match( struct device *parent, struct cfdata *cf, void *aux )
{
return 1;
}
#ifdef G4250_LCD_NEC_NL3224BC35
/* NEC's QVGA LCD */
static const struct lcd_panel_geometry nec_NL3224BC35 =
{
320, /* Width */
240, /* Height */
0, /* No extra lines */
LCDPANEL_SINGLE|LCDPANEL_ACTIVE|LCDPANEL_PCP|
LCDPANEL_VSP|LCDPANEL_HSP,
7, /* clock divider, 6.25MHz at 100MHz */
0xff, /* AC bias pin freq */
6, /* horizontal sync pulse width */
70, /* BLW */
7, /* ELW */
10, /* vertical sync pulse width */
11, /* BFW */
1, /* EFW */
};
#endif
#ifdef G4250_LCD_TOSHIBA_LTM035
const struct lcd_panel_geometry toshiba_LTM035 =
{
240, /* Width */
320, /* Height */
0, /* No extra lines */
LCDPANEL_SINGLE|LCDPANEL_ACTIVE| /* LCDPANEL_PCP| */
LCDPANEL_VSP|LCDPANEL_HSP,
11, /* clock divider, 4.5 MHz at 100 MHz */
/* required: 4.28..4.7 MHz */
0xff, /* AC bias pin freq */
4, /* horizontal sync pulse width */
8, /* BLW (back porch) */
4, /* ELW (front porch) */
2, /* vertical sync pulse width */
2, /* BFW (back porch) */
3, /* EFW (front porch) */
};
#endif /* G4250_LCD_TOSHIBA_LTM035 */
void lcd_attach( struct device *parent, struct device *self, void *aux )
{
struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self;
#ifdef G4250_LCD_TOSHIBA_LTM035
# define PANEL toshiba_LTM035
#else
# define PANEL nec_NL3224BC35
#endif
pxa2x0_lcd_attach_sub(sc, aux, &PANEL);
#if NWSDISPLAY > 0
{
struct wsemuldisplaydev_attach_args aa;
/* make wsdisplay screen list */
pxa2x0_lcd_setup_wsscreen(&lcd_bpp16_screen, &PANEL, NULL);
pxa2x0_lcd_setup_wsscreen(&lcd_bpp8_screen, &PANEL, NULL);
pxa2x0_lcd_setup_wsscreen(&lcd_bpp4_screen, &PANEL, NULL);
aa.console = 0;
aa.scrdata = &lcd_screen_list;
aa.accessops = &lcd_accessops;
aa.accesscookie = sc;
printf("\n");
(void) config_found(self, &aa, wsemuldisplaydevprint);
}
#else
{
struct pxa2x0_lcd_screen *screen;
int error;
error = pxa2x0_lcd_new_screen( sc, 16, &screen );
if (error == 0) {
sc->active = screen;
pxa2x0_lcd_start_dma(sc, screen);
}
printf("\n");
}
#endif
#undef PANEL
}
#if NWSDISPLAY > 0
int
lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
{
struct obio_softc *osc =
(struct obio_softc *) device_parent((struct device *)v);
uint16_t reg;
switch (cmd) {
case WSDISPLAYIO_SVIDEO:
reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh,
G42XXEB_LCDCTL);
if (*(int *)data == WSDISPLAYIO_VIDEO_ON)
reg |= LCDCTL_BL_ON;
else
reg &= ~LCDCTL_BL_ON;
bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh,
G42XXEB_LCDCTL, reg);
bus_space_write_1(osc->sc_iot, osc->sc_obioreg_ioh,
G42XXEB_LED, reg);
printf("LCD control: %x\n", reg);
break; /* turn on/off LCD controller */
}
return pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l);
}
int
lcd_show_screen(void *v, void *cookie, int waitok,
void (*cb)(void *, int, int), void *cbarg)
{
struct obio_softc *osc =
(struct obio_softc *) device_parent((struct device *)v);
uint16_t reg;
pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg);
/* Turn on LCD backlight.
XXX: with fixed blightness. want new ioctl to set blightness. */
reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
(reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
return 0;
}
#else /* NWSDISPLAY==0 */
int
lcdopen(dev_t dev, int oflags, int devtype, struct lwp *l)
{
return 0;
}
int
lcdclose(dev_t dev, int fflag, int devtype, struct lwp *l)
{
return 0;
}
paddr_t
lcdmmap(dev_t dev, off_t offset, int size)
{
struct pxa2x0_lcd_softc *sc =
device_lookup_private(&lcd_cd, minor(dev));
struct pxa2x0_lcd_screen *scr = sc->active;
return bus_dmamem_mmap( &pxa2x0_bus_dma_tag, scr->segs, scr->nsegs,
offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT );
}
int
lcdioctl(dev_t dev, u_long cmd, void *data,
int fflag, struct lwp *l)
{
return EOPNOTSUPP;
}
#endif /* NWSDISPLAY>0 */