1 /* $NetBSD: gxlcd.c,v 1.6 2023/12/20 13:55:17 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved.
5 * Written by Hiroyuki Bessho for Genetec Corporation.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of Genetec Corporation may not be used to endorse or
16 * promote products derived from this software without specific prior
17 * written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * LCD driver for Gumstix consoleLCD-vx and compatible.
34 * (based on the Intel Lubbock driver).
35 *
36 * Controlling LCD is almost completely done through PXA2X0's
37 * integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c.
38 *
39 * Codes in this file provide platform specific things including:
40 * LCD on/off switch and backlight
41 * LCD panel geometry
42 */
43
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: gxlcd.c,v 1.6 2023/12/20 13:55:17 thorpej Exp $");
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/conf.h>
50 #include <sys/uio.h>
51
52 #include <dev/cons.h>
53 #include <dev/wscons/wsconsio.h>
54 #include <dev/wscons/wsdisplayvar.h>
55 #include <dev/wscons/wscons_callbacks.h>
56
57 #include <sys/bus.h>
58
59 #include <arm/xscale/pxa2x0var.h>
60 #include <arm/xscale/pxa2x0reg.h>
61 #include <arm/xscale/pxa2x0_lcd.h>
62 #include <arm/xscale/pxa2x0_gpio.h>
63
64
65 #ifndef CURRENT_DISPLAY
66 #define CURRENT_DISPLAY samsung_lte430wq_f0c
67 #endif
68
69
70 static int gxlcd_match(device_t, cfdata_t, void *);
71 static void gxlcd_attach(device_t, device_t, void *);
72
73 void gxlcd_cnattach(void);
74
75 static int gxlcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
76 static int gxlcd_show_screen(void *, void *, int,
77 void (*)(void *, int, int), void *);
78
79
80 /*
81 * wsdisplay glue
82 */
83 static struct pxa2x0_wsscreen_descr gxlcd_std_screen = {
84 .c = {
85 .name = "std",
86 .textops = &pxa2x0_lcd_emulops,
87 .fontwidth = 8,
88 .fontheight = 16,
89 .capabilities = WSSCREEN_WSCOLORS,
90 },
91 .depth = 16, /* bits per pixel */
92 };
93
94 static const struct wsscreen_descr *gxlcd_scr_descr[] = {
95 &gxlcd_std_screen.c
96 };
97
98 static const struct wsscreen_list gxlcd_screen_list = {
99 .nscreens = __arraycount(gxlcd_scr_descr),
100 .screens = gxlcd_scr_descr,
101 };
102
103 struct wsdisplay_accessops gxlcd_accessops = {
104 gxlcd_ioctl,
105 pxa2x0_lcd_mmap,
106 pxa2x0_lcd_alloc_screen,
107 pxa2x0_lcd_free_screen,
108 gxlcd_show_screen,
109 NULL,
110 NULL,
111 NULL,
112 };
113
114 const struct lcd_panel_geometry samsung_lte430wq_f0c =
115 {
116 480, /* Width */
117 272, /* Height */
118 0, /* No extra lines */
119
120 LCDPANEL_ACTIVE | LCDPANEL_PCP,
121 1, /* clock divider */
122 0, /* AC bias pin freq */
123
124 41, /* horizontal sync pulse width */
125 4, /* BLW */
126 8, /* ELW */
127
128 10, /* vertical sync pulse width */
129 2, /* BFW */
130 4, /* EFW */
131 };
132
133 static int gxlcd_console;
134
135
136 CFATTACH_DECL_NEW(gxlcd, sizeof(struct pxa2x0_lcd_softc),
137 gxlcd_match, gxlcd_attach, NULL, NULL);
138
139
140 static int
gxlcd_match(device_t parent,cfdata_t match,void * aux)141 gxlcd_match(device_t parent, cfdata_t match, void *aux)
142 {
143 struct pxaip_attach_args *pxa = aux;
144
145 if (strcmp(pxa->pxa_name, match->cf_name) != 0)
146 return 0;
147
148 pxa->pxa_size = PXA2X0_LCDC_SIZE;
149 return 1;
150 }
151
152 static void
gxlcd_attach(device_t parent,device_t self,void * aux)153 gxlcd_attach(device_t parent, device_t self, void *aux)
154 {
155 struct pxa2x0_lcd_softc *sc = device_private(self);
156 struct wsemuldisplaydev_attach_args aa;
157
158 sc->dev = self;
159 pxa2x0_lcd_attach_sub(sc, aux, &CURRENT_DISPLAY);
160
161 aa.console = gxlcd_console;
162 aa.scrdata = &gxlcd_screen_list;
163 aa.accessops = &gxlcd_accessops;
164 aa.accesscookie = sc;
165
166 pxa2x0_lcd_setup_wsscreen(&gxlcd_std_screen, &CURRENT_DISPLAY, NULL);
167
168 (void) config_found(self, &aa, wsemuldisplaydevprint, CFARGS_NONE);
169 }
170
171 void
gxlcd_cnattach(void)172 gxlcd_cnattach(void)
173 {
174
175 pxa2x0_lcd_cnattach(&gxlcd_std_screen, &CURRENT_DISPLAY);
176
177 gxlcd_console = 1;
178 }
179
180
181 /*
182 * wsdisplay accessops overrides
183 */
184 static int
gxlcd_ioctl(void * v,void * vs,u_long cmd,void * data,int flag,struct lwp * l)185 gxlcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
186 {
187 int res = EINVAL;
188
189 switch (cmd) {
190 case WSDISPLAYIO_SVIDEO:
191 if (*(int *)data == WSDISPLAYIO_VIDEO_ON)
192 pxa2x0_gpio_set_function(17, GPIO_IN);
193 else
194 pxa2x0_gpio_set_function(17, GPIO_OUT | GPIO_CLR);
195 break;
196 }
197
198 if (res == EINVAL)
199 res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l);
200 return res;
201 }
202
203 static int
gxlcd_show_screen(void * v,void * cookie,int waitok,void (* cb_func)(void *,int,int),void * cb_arg)204 gxlcd_show_screen(void *v, void *cookie, int waitok,
205 void (*cb_func)(void *, int, int), void *cb_arg)
206 {
207 int error;
208
209 error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg);
210 if (error)
211 return (error);
212
213 /* Turn on LCD */
214 pxa2x0_gpio_set_function(17, GPIO_IN);
215
216 return 0;
217 }
218