293 lines
7.1 KiB
C
293 lines
7.1 KiB
C
/* $NetBSD: lubbock_lcd.c,v 1.6 2006/12/18 15:30:56 nonaka Exp $ */
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/*
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* Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved.
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* Written by Hiroyuki Bessho for Genetec Corporation.
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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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* 3. The name of Genetec Corporation may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* LCD driver for Intel Lubbock.
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*
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* Controlling LCD is almost completely done through PXA2X0's
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* integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c.
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*
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* Codes in this file provide platform specific things including:
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* LCD on/off switch in on-board PLD register.
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* LCD panel geometry
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: lubbock_lcd.c,v 1.6 2006/12/18 15:30:56 nonaka Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/uio.h>
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#include <sys/malloc.h>
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#include <dev/cons.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <dev/wscons/wscons_callbacks.h>
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#include <machine/bus.h>
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#include <arm/xscale/pxa2x0var.h>
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#include <arm/xscale/pxa2x0reg.h>
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#include <arm/xscale/pxa2x0_lcd.h>
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#include <arch/evbarm/lubbock/lubbock_reg.h>
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#include <arch/evbarm/lubbock/lubbock_var.h>
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#include "wsdisplay.h"
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int lcd_match( struct device *, struct cfdata *, void *);
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void lcd_attach( struct device *, struct device *, void *);
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int lcdintr(void *);
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#if NWSDISPLAY > 0
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/*
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* wsdisplay glue
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*/
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struct pxa2x0_wsscreen_descr lcd_bpp16_screen = {
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{
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"bpp16", 0, 0,
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&pxa2x0_lcd_emulops,
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0, 0,
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WSSCREEN_WSCOLORS,
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},
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16 /* bits per pixel */
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}, lcd_bpp8_screen = {
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{
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"bpp8", 0, 0,
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&pxa2x0_lcd_emulops,
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0, 0,
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WSSCREEN_WSCOLORS,
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},
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8 /* bits per pixel */
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}, lcd_bpp4_screen = {
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{
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"bpp4", 0, 0,
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&pxa2x0_lcd_emulops,
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0, 0,
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WSSCREEN_WSCOLORS,
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},
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4 /* bits per pixel */
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};
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static const struct wsscreen_descr *lcd_scr_descr[] = {
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#if 0
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/* bpp4 needs a patch to rasops4 */
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&lcd_bpp4_screen.c,
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#endif
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&lcd_bpp8_screen.c,
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&lcd_bpp16_screen.c,
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};
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const struct wsscreen_list lcd_screen_list = {
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sizeof lcd_scr_descr / sizeof lcd_scr_descr[0],
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lcd_scr_descr
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};
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int lcd_ioctl(void *, void *, u_long, caddr_t, int, struct lwp *);
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int lcd_show_screen(void *, void *, int,
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void (*)(void *, int, int), void *);
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const struct wsdisplay_accessops lcd_accessops = {
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lcd_ioctl,
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pxa2x0_lcd_mmap,
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pxa2x0_lcd_alloc_screen,
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pxa2x0_lcd_free_screen,
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lcd_show_screen,
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NULL, /* load_font */
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};
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#else
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/*
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* Interface to LCD framebuffer without wscons
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*/
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dev_type_open(lcdopen);
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dev_type_close(lcdclose);
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dev_type_ioctl(lcdioctl);
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dev_type_mmap(lcdmmap);
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const struct cdevsw lcd_cdevsw = {
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lcdopen, lcdclose, noread, nowrite,
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lcdioctl, nostop, notty, nopoll, lcdmmap, D_TTY
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};
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#endif
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CFATTACH_DECL(lcd_obio, sizeof (struct pxa2x0_lcd_softc), lcd_match,
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lcd_attach, NULL, NULL);
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int
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lcd_match( struct device *parent, struct cfdata *cf, void *aux )
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{
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return 1;
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}
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static const struct lcd_panel_geometry sharp_LM8V31 =
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{
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640, /* Width */
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480, /* Height */
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0, /* No extra lines */
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LCDPANEL_DUAL|LCDPANEL_PASSIVE|LCDPANEL_PCP,
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10, /* clock divider */
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0xff, /* AC bias pin freq */
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2, /* horizontal sync pulse width */
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3, /* BLW */
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3, /* ELW */
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1, /* vertical sync pulse width */
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0, /* BFW */
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0, /* EFW */
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};
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void lcd_attach( struct device *parent, struct device *self, void *aux )
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{
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struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self;
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pxa2x0_lcd_attach_sub(sc, aux, &sharp_LM8V31);
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#if NWSDISPLAY > 0
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{
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struct wsemuldisplaydev_attach_args aa;
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/* make wsdisplay screen list */
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pxa2x0_lcd_setup_wsscreen( &lcd_bpp16_screen, &sharp_LM8V31, NULL );
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pxa2x0_lcd_setup_wsscreen( &lcd_bpp8_screen, &sharp_LM8V31, NULL );
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pxa2x0_lcd_setup_wsscreen( &lcd_bpp4_screen, &sharp_LM8V31, NULL );
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aa.console = 0;
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aa.scrdata = &lcd_screen_list;
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aa.accessops = &lcd_accessops;
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aa.accesscookie = sc;
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printf( "\n" );
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(void) config_found(self, &aa, wsemuldisplaydevprint);
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}
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#else
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{
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struct pxa2x0_lcd_screen *screen;
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int error;
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error = pxa2x0_lcd_new_screen( sc, 8, &screen );
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if( error == 0 ){
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sc->active = screen;
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pxa2x0_lcd_start_dma( sc, screen );
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}
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printf( "\n" );
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}
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#endif
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}
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#if NWSDISPLAY > 0
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int
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lcd_ioctl(void *v, void *vs, u_long cmd, caddr_t data, int flag, struct lwp *l)
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{
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struct obio_softc *osc =
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(struct obio_softc *) device_parent((struct device *)v);
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uint16_t reg;
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switch (cmd) {
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case WSDISPLAYIO_SVIDEO:
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reg = bus_space_read_2( osc->sc_iot, osc->sc_obioreg_ioh,
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LUBBOCK_MISCWR );
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if( *(int *)data == WSDISPLAYIO_VIDEO_ON )
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reg |= MISCWR_LCDDISP;
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else
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reg &= ~MISCWR_LCDDISP;
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bus_space_write_2( osc->sc_iot, osc->sc_obioreg_ioh,
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LUBBOCK_MISCWR, reg );
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break; /* turn on/off LCD controller */
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}
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return pxa2x0_lcd_ioctl( v, vs, cmd, data, flag, l );
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}
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int
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lcd_show_screen(void *v, void *cookie, int waitok,
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void (*cb)(void *, int, int), void *cbarg)
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{
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struct obio_softc *osc =
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(struct obio_softc *) device_parent((struct device *)v);
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pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg);
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/* Turn on LCD */
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bus_space_write_4( osc->sc_iot, osc->sc_obioreg_ioh, LUBBOCK_MISCWR,
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MISCWR_LCDDISP |
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bus_space_read_4( osc->sc_iot, osc->sc_obioreg_ioh, LUBBOCK_MISCWR ) );
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return (0);
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}
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#else /* NWSDISPLAY==0 */
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int
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lcdopen( dev_t dev, int oflags, int devtype, struct lwp *l )
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{
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return 0;
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}
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int
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lcdclose( dev_t dev, int fflag, int devtype, struct lwp *l )
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{
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return 0;
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}
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paddr_t
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lcdmmap( dev_t dev, off_t offset, int size )
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{
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struct pxa2x0_lcd_softc *sc = device_lookup(&lcd_cd, minor(dev));
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struct pxa2x0_lcd_screen *scr = sc->active;
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return bus_dmamem_mmap( &pxa2x0_bus_dma_tag, scr->segs, scr->nsegs,
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offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT );
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}
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int
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lcdioctl( dev_t dev, u_long cmd, caddr_t data,
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int fflag, struct lwp *l )
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{
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return EOPNOTSUPP;
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}
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#endif /* NWSDISPLAY>0 */
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