NetBSD-5.0.2/sys/arch/zaurus/dev/zlcd.c
/* $NetBSD: zlcd.c,v 1.7 2007/10/17 19:58:35 garbled Exp $ */
/* $OpenBSD: zaurus_lcd.c,v 1.20 2006/06/02 20:50:14 miod Exp $ */
/* NetBSD: lubbock_lcd.c,v 1.1 2003/08/09 19:38:53 bsh Exp */
/*
* Copyright (c) 2002, 2003 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.
*/
/*
* LCD driver for Sharp Zaurus (based on the Intel Lubbock driver).
*
* Controlling LCD is almost completely done through PXA2X0's
* integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c.
*
* Codes in this file provide platform specific things including:
* LCD on/off switch and backlight brightness
* LCD panel geometry
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: zlcd.c,v 1.7 2007/10/17 19:58:35 garbled Exp $");
#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 <dev/hpc/hpcfbio.h>
#include <machine/bus.h>
#include <arm/xscale/pxa2x0var.h>
#include <arm/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0_lcd.h>
#include <zaurus/dev/scoopvar.h>
#include <zaurus/dev/zsspvar.h>
#include <zaurus/zaurus/zaurus_var.h>
/*
* wsdisplay glue
*/
static struct pxa2x0_wsscreen_descr lcd_std_screen = {
.c = {
.name = "std",
.textops = &pxa2x0_lcd_emulops,
.fontwidth = 8,
.fontheight = 16,
.capabilities = WSSCREEN_WSCOLORS,
},
.depth = 16, /* bits per pixel */
.flags = RI_ROTATE_CW, /* quarter clockwise rotation */
};
static const struct wsscreen_descr *lcd_scr_descr[] = {
&lcd_std_screen.c
};
static const struct wsscreen_list lcd_screen_list = {
.nscreens = __arraycount(lcd_scr_descr),
.screens = lcd_scr_descr,
};
static int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static int lcd_param(struct pxa2x0_lcd_softc *, u_long,
struct wsdisplay_param *);
static int lcd_show_screen(void *, void *, int,
void (*)(void *, int, int), void *);
struct wsdisplay_accessops lcd_accessops = {
lcd_ioctl,
pxa2x0_lcd_mmap,
pxa2x0_lcd_alloc_screen,
pxa2x0_lcd_free_screen,
lcd_show_screen,
NULL,
NULL,
NULL,
};
#define CURRENT_DISPLAY &sharp_zaurus_C3000
const struct lcd_panel_geometry sharp_zaurus_C3000 =
{
480, /* Width */
640, /* Height */
0, /* No extra lines */
LCDPANEL_ACTIVE | LCDPANEL_VSP | LCDPANEL_HSP,
1, /* clock divider */
0, /* AC bias pin freq */
0x28, /* horizontal sync pulse width */
0x2e, /* BLW */
0x7d, /* ELW */
2, /* vertical sync pulse width */
1, /* BFW */
0, /* EFW */
};
struct sharp_lcd_backlight {
int duty; /* LZ9JG18 DAC value */
int cont; /* BACKLIGHT_CONT signal */
int on; /* BACKLIGHT_ON signal */
};
#define CURRENT_BACKLIGHT sharp_zaurus_C3000_bl
const struct sharp_lcd_backlight sharp_zaurus_C3000_bl[] = {
{ 0x00, 0, 0 }, /* 0: Off */
{ 0x00, 0, 1 }, /* 1: 0% */
{ 0x01, 0, 1 }, /* 2: 20% */
{ 0x07, 0, 1 }, /* 3: 40% */
{ 0x01, 1, 1 }, /* 4: 60% */
{ 0x07, 1, 1 }, /* 5: 80% */
{ 0x11, 1, 1 }, /* 6: 100% */
{ -1, -1, -1 }, /* 7: Invalid */
};
static int lcd_match(struct device *, struct cfdata *, void *);
static void lcd_attach(struct device *, struct device *, void *);
CFATTACH_DECL(zlcd, sizeof(struct pxa2x0_lcd_softc),
lcd_match, lcd_attach, NULL, NULL);
void lcd_cnattach(void);
int lcd_max_brightness(void);
int lcd_get_brightness(void);
void lcd_set_brightness(int);
void lcd_set_brightness_internal(int);
int lcd_get_backlight(void);
void lcd_set_backlight(int);
void lcd_blank(int);
void lcd_power(int, void *);
static int
lcd_match(struct device *parent, struct cfdata *cf, void *aux)
{
return 1;
}
static void
lcd_attach(struct device *parent, struct device *self, void *aux)
{
struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self;
struct wsemuldisplaydev_attach_args aa;
pxa2x0_lcd_attach_sub(sc, aux, CURRENT_DISPLAY);
aa.console = glass_console;
aa.scrdata = &lcd_screen_list;
aa.accessops = &lcd_accessops;
aa.accesscookie = sc;
(void) config_found(self, &aa, wsemuldisplaydevprint);
/* Start with approximately 40% of full brightness. */
lcd_set_brightness(3);
(void) powerhook_establish(sc->dev.dv_xname, lcd_power, sc);
}
void
lcd_cnattach(void)
{
pxa2x0_lcd_cnattach(&lcd_std_screen, CURRENT_DISPLAY);
}
/*
* wsdisplay accessops overrides
*/
static int
lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
{
struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)v;
struct hpcfb_fbconf *fbconf;
struct hpcfb_dspconf *dspconf;
int res = EINVAL;
switch (cmd) {
case WSDISPLAYIO_GETPARAM:
case WSDISPLAYIO_SETPARAM:
res = lcd_param(sc, cmd, (struct wsdisplay_param *)data);
break;
case HPCFBIO_GCONF:
fbconf = (struct hpcfb_fbconf *)data;
if (fbconf->hf_conf_index != 0 &&
fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
break;
}
fbconf->hf_conf_index = 0;
fbconf->hf_nconfs = 1;
fbconf->hf_class = HPCFB_CLASS_RGBCOLOR;
strlcpy(fbconf->hf_name, "Sharp Zaurus frame buffer",
sizeof(fbconf->hf_name));
strlcpy(fbconf->hf_conf_name, "default",
sizeof(fbconf->hf_conf_name));
fbconf->hf_width = sc->geometry->panel_width;
fbconf->hf_height = sc->geometry->panel_height;
fbconf->hf_baseaddr = (u_long)sc->active->buf_va;
fbconf->hf_offset = 0;
fbconf->hf_bytes_per_line = sc->geometry->panel_width *
sc->active->depth / 8;
fbconf->hf_nplanes = 1;
fbconf->hf_bytes_per_plane = sc->geometry->panel_width *
sc->geometry->panel_height * sc->active->depth / 8;
fbconf->hf_pack_width = sc->active->depth;
fbconf->hf_pixels_per_pack = 1;
fbconf->hf_pixel_width = sc->active->depth;
fbconf->hf_access_flags = (0
| HPCFB_ACCESS_BYTE
| HPCFB_ACCESS_WORD
| HPCFB_ACCESS_DWORD);
fbconf->hf_order_flags = 0;
fbconf->hf_reg_offset = 0;
fbconf->hf_class_data_length = sizeof(struct hf_rgb_tag);
fbconf->hf_u.hf_rgb.hf_flags = 0;
fbconf->hf_u.hf_rgb.hf_red_width = 5;
fbconf->hf_u.hf_rgb.hf_red_shift = 11;
fbconf->hf_u.hf_rgb.hf_green_width = 6;
fbconf->hf_u.hf_rgb.hf_green_shift = 5;
fbconf->hf_u.hf_rgb.hf_blue_width = 5;
fbconf->hf_u.hf_rgb.hf_blue_shift = 0;
fbconf->hf_u.hf_rgb.hf_alpha_width = 0;
fbconf->hf_u.hf_rgb.hf_alpha_shift = 0;
fbconf->hf_ext_size = 0;
fbconf->hf_ext_data = NULL;
res = 0;
break;
case HPCFBIO_SCONF:
fbconf = (struct hpcfb_fbconf *)data;
if (fbconf->hf_conf_index != 0 &&
fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
break;
}
/* nothing to do because we have only one configuration */
res = 0;
break;
case HPCFBIO_GDSPCONF:
dspconf = (struct hpcfb_dspconf *)data;
if ((dspconf->hd_unit_index != 0 &&
dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
(dspconf->hd_conf_index != 0 &&
dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
break;
}
dspconf->hd_unit_index = 0;
dspconf->hd_nunits = 1;
dspconf->hd_class = HPCFB_DSP_CLASS_COLORLCD;
strlcpy(dspconf->hd_name, "Sharp Zaurus LCD",
sizeof(dspconf->hd_name));
dspconf->hd_op_flags = 0;
dspconf->hd_conf_index = 0;
dspconf->hd_nconfs = 1;
strlcpy(dspconf->hd_conf_name, "default",
sizeof(dspconf->hd_conf_name));
dspconf->hd_width = sc->geometry->panel_width;
dspconf->hd_height = sc->geometry->panel_height;
dspconf->hd_xdpi = HPCFB_DSP_DPI_UNKNOWN;
dspconf->hd_ydpi = HPCFB_DSP_DPI_UNKNOWN;
res = 0;
break;
case HPCFBIO_SDSPCONF:
dspconf = (struct hpcfb_dspconf *)data;
if ((dspconf->hd_unit_index != 0 &&
dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
(dspconf->hd_conf_index != 0 &&
dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
break;
}
/*
* nothing to do
* because we have only one unit and one configuration
*/
res = 0;
break;
case HPCFBIO_GOP:
case HPCFBIO_SOP:
/* curently not implemented... */
break;
}
if (res == EINVAL)
res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l);
return res;
}
static int
lcd_show_screen(void *v, void *cookie, int waitok,
void (*cb_func)(void *, int, int), void *cb_arg)
{
int error;
error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg);
if (error)
return (error);
/* Turn on LCD */
lcd_set_brightness(lcd_get_brightness());
return 0;
}
/*
* wsdisplay I/O controls
*/
static int
lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, struct wsdisplay_param *dp)
{
int res = EINVAL;
switch (dp->param) {
case WSDISPLAYIO_PARAM_BACKLIGHT:
if (cmd == WSDISPLAYIO_GETPARAM) {
dp->min = 0;
dp->max = 1;
dp->curval = lcd_get_backlight();
res = 0;
} else if (cmd == WSDISPLAYIO_SETPARAM) {
lcd_set_backlight(dp->curval);
res = 0;
}
break;
case WSDISPLAYIO_PARAM_CONTRAST:
/* unsupported */
res = ENOTTY;
break;
case WSDISPLAYIO_PARAM_BRIGHTNESS:
if (cmd == WSDISPLAYIO_GETPARAM) {
dp->min = 1;
dp->max = lcd_max_brightness();
dp->curval = lcd_get_brightness();
res = 0;
} else if (cmd == WSDISPLAYIO_SETPARAM) {
lcd_set_brightness(dp->curval);
res = 0;
}
break;
}
return res;
}
/*
* LCD backlight
*/
static int lcdbrightnesscurval = 1;
static int lcdislit = 1;
static int lcdisblank = 0;
int
lcd_max_brightness(void)
{
int i;
for (i = 0; CURRENT_BACKLIGHT[i].duty != -1; i++)
continue;
return i - 1;
}
int
lcd_get_brightness(void)
{
return lcdbrightnesscurval;
}
void
lcd_set_brightness(int newval)
{
int maxval;
maxval = lcd_max_brightness();
if (newval < 0)
newval = 0;
else if (newval > maxval)
newval = maxval;
if (lcd_get_backlight() && !lcdisblank)
lcd_set_brightness_internal(newval);
if (newval > 0)
lcdbrightnesscurval = newval;
}
void
lcd_set_brightness_internal(int newval)
{
static int curval = 1;
int i;
/*
* It appears that the C3000 backlight can draw too much power if we
* switch it from a low to a high brightness. Increasing brightness
* in steps avoids this issue.
*/
if (newval > curval) {
for (i = curval + 1; i <= newval; i++) {
(void)zssp_ic_send(ZSSP_IC_LZ9JG18,
CURRENT_BACKLIGHT[i].duty);
scoop_set_backlight(CURRENT_BACKLIGHT[i].on,
CURRENT_BACKLIGHT[i].cont);
delay(5000);
}
} else {
(void)zssp_ic_send(ZSSP_IC_LZ9JG18,
CURRENT_BACKLIGHT[newval].duty);
scoop_set_backlight(CURRENT_BACKLIGHT[newval].on,
CURRENT_BACKLIGHT[newval].cont);
}
curval = newval;
}
int
lcd_get_backlight(void)
{
return lcdislit;
}
void
lcd_set_backlight(int onoff)
{
if (!onoff) {
lcd_set_brightness(0);
lcdislit = 0;
} else {
lcdislit = 1;
lcd_set_brightness(lcd_get_brightness());
}
}
void
lcd_blank(int blank)
{
if (blank) {
lcd_set_brightness(0);
lcdisblank = 1;
} else {
lcdisblank = 0;
lcd_set_brightness(lcd_get_brightness());
}
}
void
lcd_power(int why, void *v)
{
switch (why) {
case PWR_SUSPEND:
case PWR_STANDBY:
lcd_set_brightness(0);
pxa2x0_lcd_power(why, v);
break;
case PWR_RESUME:
pxa2x0_lcd_power(why, v);
lcd_set_brightness(lcd_get_brightness());
break;
}
}