/* $NetBSD: g42xxeb_lcd.c,v 1.19 2023/12/20 13:55:17 thorpej 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 <dev/cons.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wscons_callbacks.h>

#include <sys/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(device_t, cfdata_t, void *);
void    lcd_attach(device_t, device_t, 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 = {
       .d_open = lcdopen,
       .d_close = lcdclose,
       .d_read = noread,
       .d_write = nowrite,
       .d_ioctl = lcdioctl,
       .d_stop = nostop,
       .d_tty = notty,
       .d_poll = nopoll,
       .d_mmap = lcdmmap,
       .d_kqfilter = nokqfilter,
       .d_discard = nodiscard,
       .d_flag = D_TTY
};

#endif

CFATTACH_DECL_NEW(lcd_obio, sizeof (struct pxa2x0_lcd_softc),
   lcd_match, lcd_attach, NULL, NULL);

int
lcd_match( device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux)
{
       struct pxa2x0_lcd_softc *sc = device_private(self);
       struct pxaip_attach_args paa;
       struct obio_attach_args *oba = aux;

       sc->dev = self;

       paa.pxa_name = "obio";
       paa.pxa_iot = oba->oba_iot;
       paa.pxa_addr = oba->oba_addr;
       paa.pxa_size = 0;               /* XXX */
       paa.pxa_intr = oba->oba_intr;

#ifdef G4250_LCD_TOSHIBA_LTM035
# define PANEL  toshiba_LTM035
#else
# define PANEL  nec_NL3224BC35
#endif

       pxa2x0_lcd_attach_sub(sc, &paa, &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;

               (void) config_found(self, &aa, wsemuldisplaydevprint,
                   CFARGS_NONE);
       }
#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);
               }
       }
#endif

#undef PANEL

}

#if NWSDISPLAY > 0

int
lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
{
       struct pxa2x0_lcd_softc *sc = v;
       struct obio_softc *osc =
           device_private(device_parent(sc->dev));
       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 pxa2x0_lcd_softc *sc = v;
       struct obio_softc *osc =
           device_private(device_parent(sc->dev));
       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)
{
       struct pxa2x0_lcd_softc *sc =
               device_lookup_private(&lcd_cd, minor(dev));
       struct obio_softc *osc =
           device_private(device_parent(sc->dev));
       uint16_t reg;

       /* 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;
}

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 */

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.