NetBSD-5.0.2/sys/arch/evbarm/smdk2xx0/smdk2410_lcd.c
/* $NetBSD: smdk2410_lcd.c,v 1.4 2008/06/11 23:24:43 cegger Exp $ */
/*
* Copyright (c) 2004 Genetec Corporation. All rights reserved.
* Written by Hiroyuki Bessho for Genetec Corporation.
*
* 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. The name of Genetec Corporation may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``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 GENETEC CORPORATION
* 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: smdk2410_lcd.c,v 1.4 2008/06/11 23:24:43 cegger Exp $");
/*
* LCD driver for Samsung SMDK2410.
*
* Controlling LCD is almost completely done through S3C2410's
* integrated LCD controller. Codes for it is arm/s3c2xx0/s3c24x0_lcd.c.
*
* Codes in this file provide the platform's LCD panel information.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/event.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/s3c2xx0/s3c24x0var.h>
#include <arm/s3c2xx0/s3c24x0reg.h>
#include <arm/s3c2xx0/s3c2410reg.h>
#include <arm/s3c2xx0/s3c24x0_lcd.h>
#include "wsdisplay.h"
int lcd_match(struct device *, struct cfdata *, void *);
void lcd_attach(struct device *, struct device *, void *);
#ifdef LCD_DEBUG
void draw_test_pattern(struct s3c24x0_lcd_softc *,
struct s3c24x0_lcd_screen *scr);
#endif
#if NWSDISPLAY > 0
/*
* Screen geometries.
*
* S3C24x0's LCD controller can have virtual screens that are bigger
* than actual LCD panel. (XXX: wscons can't manage such screens for now)
*/
struct s3c24x0_wsscreen_descr lcd_bpp16_30x32 = {
{
"30x32bpp16", 30, 32,
&s3c24x0_lcd_emulops,
8, 10,
WSSCREEN_WSCOLORS,
},
16 /* bits per pixel */
}, lcd_bpp16_30x20 = {
{
"30x20bpp16", 30, 20,
&s3c24x0_lcd_emulops,
8, 16,
WSSCREEN_WSCOLORS,
},
16
}, lcd_bpp8_30x32 = {
{
"30x32bpp8", 30, 32,
&s3c24x0_lcd_emulops,
8, 10,
WSSCREEN_WSCOLORS,
},
8
}, lcd_bpp8_40x25 = { /* with big virtual screen */
{
"40x25bpp8", 40, 25,
&s3c24x0_lcd_emulops,
8, 16,
WSSCREEN_WSCOLORS,
},
8
}, lcd_bpp4_30x32 = {
{
"30x32bpp4", 30, 32,
&s3c24x0_lcd_emulops,
8, 10,
0, /* 4bpp mode is grayscale */
},
4
};
static const struct wsscreen_descr *lcd_scr_descr[] = {
#if 0
/* bpp4 needs a patch to rasops4 */
&lcd_bpp4_30x32.c,
#endif
&lcd_bpp8_30x32.c,
&lcd_bpp8_40x25.c,
&lcd_bpp16_30x32.c,
&lcd_bpp16_30x20.c,
};
#define N_SCR_DESCR (sizeof lcd_scr_descr / sizeof lcd_scr_descr[0])
const struct wsscreen_list lcd_screen_list = {
N_SCR_DESCR,
lcd_scr_descr
};
const struct wsdisplay_accessops lcd_accessops = {
s3c24x0_lcd_ioctl,
s3c24x0_lcd_mmap,
s3c24x0_lcd_alloc_screen,
s3c24x0_lcd_free_screen,
s3c24x0_lcd_show_screen,
NULL, /* load_font */
};
#else /* NWSDISPLAY */
/*
* Interface to LCD framebuffer without wscons
*/
extern struct cfdriver lcd_cd;
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, nokqfilter, D_TTY
};
#endif /* NWSDISPLAY */
CFATTACH_DECL(lcd_ssio, sizeof (struct s3c24x0_lcd_softc), lcd_match,
lcd_attach, NULL, NULL);
int
lcd_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct s3c2xx0_attach_args *sa = aux;
if (sa->sa_addr == SSIOCF_ADDR_DEFAULT)
sa->sa_addr = S3C2410_LCDC_BASE;
return 1;
}
static const struct s3c24x0_lcd_panel_info samsung_LTS350Q1 =
{
240, /* Width */
320, /* Height */
10*1000*1000, /* pixel clock = 10MHz */
#define _(field, val) (((val)-1) << (field##_SHIFT))
LCDCON1_PNRMODE_TFT,
/* LCDCON2: vertical timings */
_(LCDCON2_VBPD, 2) |
_(LCDCON2_VFPD, 3) |
_(LCDCON2_LINEVAL, 320) |
_(LCDCON2_VPSW, 2),
/* LCDCON3: horizontal timings */
_(LCDCON3_HBPD, 7) |
_(LCDCON3_HFPD, 3),
/* LCDCON4: horizontaol pulse width */
_(LCDCON4_HPSW, 4),
/* LCDCON5: signal polarities */
LCDCON5_FRM565 | LCDCON5_INVVLINE | LCDCON5_INVVFRAME,
/* LPCSEL register */
LPCSEL_LPC_EN | LPCSEL_RES_SEL | LPCSEL_MODE_SEL,
#undef _
};
void
lcd_attach(struct device *parent, struct device *self, void *aux)
{
struct s3c24x0_lcd_softc *sc = (struct s3c24x0_lcd_softc *)self;
bus_space_tag_t iot = s3c2xx0_softc->sc_iot;
bus_space_handle_t gpio_ioh = s3c2xx0_softc->sc_gpio_ioh;
#if NWSDISPLAY > 0
struct wsemuldisplaydev_attach_args aa;
#else
struct s3c24x0_lcd_screen *screen;
#endif
aprint_normal( "\n" );
/* setup GPIO ports for LCD */
/* XXX: some LCD panels may not need all VD signals */
gpio_ioh = s3c2xx0_softc->sc_gpio_ioh;
bus_space_write_4(iot, gpio_ioh, GPIO_PCUP, ~0);
bus_space_write_4(iot, gpio_ioh, GPIO_PCCON, 0xaaaaaaaa);
bus_space_write_4(iot, gpio_ioh, GPIO_PDUP, ~0);
bus_space_write_4(iot, gpio_ioh, GPIO_PDCON, 0xaaaaaaaa);
s3c24x0_lcd_attach_sub(sc, aux, &samsung_LTS350Q1);
#if NWSDISPLAY > 0
aa.console = 0;
aa.scrdata = &lcd_screen_list;
aa.accessops = &lcd_accessops;
aa.accesscookie = sc;
(void) config_found(self, &aa, wsemuldisplaydevprint);
#else
screen = s3c24x0_lcd_new_screen(sc, 240, 320, 16);
if( screen ){
sc->active = screen;
s3c24x0_lcd_start_dma(sc, screen);
s3c24x0_lcd_power(sc, 1);
}
#endif /* NWSDISPLAY */
}
#if NWSDISPLAY == 0
int
lcdopen( dev_t dev, int oflags, int devtype, struct proc *p )
{
return 0;
}
int
lcdclose( dev_t dev, int fflag, int devtype, struct proc *p )
{
return 0;
}
paddr_t
lcdmmap( dev_t dev, off_t offset, int size )
{
struct s3c24x0_lcd_softc *sc =
device_lookup_private(&lcd_cd, minor(dev));
struct s3c24x0_lcd_screen *scr = sc->active;
return bus_dmamem_mmap(sc->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 */
#ifdef LCD_DEBUG
static void
draw_test_pattern_16(struct s3c24x0_lcd_softc *sc,
struct s3c24x0_lcd_screen *scr)
{
int x, y;
uint16_t color, *line;
char *buf = (char *)(scr->buf_va);
#define rgb(r,g,b) (((r)<<11) | ((g)<<5) | (b))
for (y=0; y < sc->panel_info->panel_height; ++y) {
line = (uint16_t *)(buf + scr->stride * y);
for (x=0; x < sc->panel_info->panel_width; ++x) {
switch (((x/30) + (y/10)) % 8) {
default:
case 0: color = rgb(0x00, 0x00, 0x00); break;
case 1: color = rgb(0x00, 0x00, 0x1f); break;
case 2: color = rgb(0x00, 0x3f, 0x00); break;
case 3: color = rgb(0x00, 0x3f, 0x1f); break;
case 4: color = rgb(0x1f, 0x00, 0x00); break;
case 5: color = rgb(0x1f, 0x00, 0x1f); break;
case 6: color = rgb(0x1f, 0x3f, 0x00); break;
case 7: color = rgb(0x1f, 0x3f, 0x1f); break;
}
line[x] = color;
}
}
for (x=0; x < MIN(sc->panel_info->panel_height,
sc->panel_info->panel_width); ++x) {
line = (uint16_t *)(buf + scr->stride * x);
line[x] = rgb(0x1f, 0x3f, 0x1f);
}
}
static void
draw_test_pattern_8(struct s3c24x0_lcd_softc *sc,
struct s3c24x0_lcd_screen *scr)
{
int x, y;
uint8_t *line;
char *buf = (char *)(scr->buf_va);
for (y=0; y < sc->panel_info->panel_height; ++y) {
line = (uint8_t *)(buf + scr->stride * y);
for (x=0; x < sc->panel_info->panel_width; ++x) {
line[x] = (((x/15) + (y/20)) % 16);
}
}
for (x=0; x < MIN(sc->panel_info->panel_height,
sc->panel_info->panel_width); ++x) {
line = (uint8_t *)(buf + scr->stride * x);
line[x] = 7;
}
}
void
draw_test_pattern(struct s3c24x0_lcd_softc *sc, struct s3c24x0_lcd_screen *scr)
{
switch (scr->depth) {
case 16:
draw_test_pattern_16(sc, scr);
break;
case 8:
draw_test_pattern_8(sc, scr);
break;
}
}
#endif /* LCD_DEBUG */