345 lines
8.5 KiB
C
345 lines
8.5 KiB
C
/* $NetBSD: g42xxeb_lcd.c,v 1.14 2011/07/01 20:38:17 dyoung Exp $ */
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/*-
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* Copyright (c) 2001, 2002, 2005 Genetec corp.
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* All rights reserved.
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*
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* LCD driver for Genetec G4250EB-X002.
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* Written by Hiroyuki Bessho for Genetec corp.
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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. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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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#include "opt_g42xxlcd.h"
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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 <sys/bus.h>
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#include <arm/sa11x0/sa11x0_var.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/g42xxeb/g42xxeb_reg.h>
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#include <arch/evbarm/g42xxeb/g42xxeb_var.h>
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#include "wsdisplay.h"
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#include "ioconf.h"
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int lcd_match(device_t, cfdata_t, void *);
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void lcd_attach(device_t, device_t, 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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&lcd_bpp4_screen.c,
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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, void *, 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, nokqfilter, D_TTY
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};
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#endif
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CFATTACH_DECL_NEW(lcd_obio, sizeof (struct pxa2x0_lcd_softc),
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lcd_match, lcd_attach, NULL, NULL);
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int
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lcd_match( device_t parent, cfdata_t cf, void *aux )
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{
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return 1;
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}
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#ifdef G4250_LCD_NEC_NL3224BC35
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/* NEC's QVGA LCD */
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static const struct lcd_panel_geometry nec_NL3224BC35 =
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{
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320, /* Width */
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240, /* Height */
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0, /* No extra lines */
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LCDPANEL_SINGLE|LCDPANEL_ACTIVE|LCDPANEL_PCP|
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LCDPANEL_VSP|LCDPANEL_HSP,
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7, /* clock divider, 6.25MHz at 100MHz */
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0xff, /* AC bias pin freq */
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6, /* horizontal sync pulse width */
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70, /* BLW */
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7, /* ELW */
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10, /* vertical sync pulse width */
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11, /* BFW */
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1, /* EFW */
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};
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#endif
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#ifdef G4250_LCD_TOSHIBA_LTM035
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const struct lcd_panel_geometry toshiba_LTM035 =
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{
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240, /* Width */
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320, /* Height */
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0, /* No extra lines */
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LCDPANEL_SINGLE|LCDPANEL_ACTIVE| /* LCDPANEL_PCP| */
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LCDPANEL_VSP|LCDPANEL_HSP,
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11, /* clock divider, 4.5 MHz at 100 MHz */
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/* required: 4.28..4.7 MHz */
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0xff, /* AC bias pin freq */
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4, /* horizontal sync pulse width */
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8, /* BLW (back porch) */
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4, /* ELW (front porch) */
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2, /* vertical sync pulse width */
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2, /* BFW (back porch) */
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3, /* EFW (front porch) */
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};
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#endif /* G4250_LCD_TOSHIBA_LTM035 */
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void lcd_attach(device_t parent, device_t self, void *aux)
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{
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struct pxa2x0_lcd_softc *sc = device_private(self);
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struct pxaip_attach_args paa;
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struct obio_attach_args *oba = aux;
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sc->dev = self;
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paa.pxa_name = "obio";
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paa.pxa_iot = oba->oba_iot;
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paa.pxa_addr = oba->oba_addr;
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paa.pxa_size = 0; /* XXX */
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paa.pxa_intr = oba->oba_intr;
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#ifdef G4250_LCD_TOSHIBA_LTM035
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# define PANEL toshiba_LTM035
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#else
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# define PANEL nec_NL3224BC35
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#endif
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pxa2x0_lcd_attach_sub(sc, &paa, &PANEL);
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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, &PANEL, NULL);
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pxa2x0_lcd_setup_wsscreen(&lcd_bpp8_screen, &PANEL, NULL);
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pxa2x0_lcd_setup_wsscreen(&lcd_bpp4_screen, &PANEL, 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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(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, 16, &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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}
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#endif
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#undef PANEL
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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, void *data, int flag, struct lwp *l)
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{
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struct pxa2x0_lcd_softc *sc = v;
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struct obio_softc *osc =
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device_private(device_parent(sc->dev));
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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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G42XXEB_LCDCTL);
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if (*(int *)data == WSDISPLAYIO_VIDEO_ON)
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reg |= LCDCTL_BL_ON;
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else
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reg &= ~LCDCTL_BL_ON;
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bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh,
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G42XXEB_LCDCTL, reg);
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bus_space_write_1(osc->sc_iot, osc->sc_obioreg_ioh,
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G42XXEB_LED, reg);
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printf("LCD control: %x\n", 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 pxa2x0_lcd_softc *sc = v;
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struct obio_softc *osc =
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device_private(device_parent(sc->dev));
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uint16_t reg;
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pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg);
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/* Turn on LCD backlight.
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XXX: with fixed blightness. want new ioctl to set blightness. */
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reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
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bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
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(reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
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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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struct pxa2x0_lcd_softc *sc =
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device_lookup_private(&lcd_cd, minor(dev));
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struct obio_softc *osc =
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device_private(device_parent(sc->dev));
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uint16_t reg;
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/* Turn on LCD backlight.
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XXX: with fixed blightness. want new ioctl to set blightness. */
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reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
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bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
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(reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
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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 =
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device_lookup_private(&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, void *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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