1 /* $NetBSD: g42xxeb_lcd.c,v 1.19 2023/12/20 13:55:17 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2001, 2002, 2005 Genetec corp.
5 * All rights reserved.
6 *
7 * LCD driver for Genetec G4250EB-X002.
8 * Written by Hiroyuki Bessho for Genetec corp.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of The NetBSD Foundation nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34 #include "opt_g42xxlcd.h"
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/conf.h>
39 #include <sys/uio.h>
40
41 #include <dev/cons.h>
42 #include <dev/wscons/wsconsio.h>
43 #include <dev/wscons/wsdisplayvar.h>
44 #include <dev/wscons/wscons_callbacks.h>
45
46 #include <sys/bus.h>
47 #include <arm/sa11x0/sa11x0_var.h>
48 #include <arm/xscale/pxa2x0var.h>
49 #include <arm/xscale/pxa2x0reg.h>
50 #include <arm/xscale/pxa2x0_lcd.h>
51
52 #include <arch/evbarm/g42xxeb/g42xxeb_reg.h>
53 #include <arch/evbarm/g42xxeb/g42xxeb_var.h>
54
55 #include "wsdisplay.h"
56 #include "ioconf.h"
57
58 int lcd_match(device_t, cfdata_t, void *);
59 void lcd_attach(device_t, device_t, void *);
60 int lcdintr(void *);
61
62 #if NWSDISPLAY > 0
63
64 /*
65 * wsdisplay glue
66 */
67 struct pxa2x0_wsscreen_descr lcd_bpp16_screen = {
68 {
69 "bpp16", 0, 0,
70 &pxa2x0_lcd_emulops,
71 0, 0,
72 WSSCREEN_WSCOLORS,
73 },
74 16 /* bits per pixel */
75 }, lcd_bpp8_screen = {
76 {
77 "bpp8", 0, 0,
78 &pxa2x0_lcd_emulops,
79 0, 0,
80 WSSCREEN_WSCOLORS,
81 },
82 8 /* bits per pixel */
83 }, lcd_bpp4_screen = {
84 {
85 "bpp4", 0, 0,
86 &pxa2x0_lcd_emulops,
87 0, 0,
88 WSSCREEN_WSCOLORS,
89 },
90 4 /* bits per pixel */
91 };
92
93
94 static const struct wsscreen_descr *lcd_scr_descr[] = {
95 &lcd_bpp4_screen.c,
96 &lcd_bpp8_screen.c,
97 &lcd_bpp16_screen.c,
98 };
99
100 const struct wsscreen_list lcd_screen_list = {
101 sizeof lcd_scr_descr / sizeof lcd_scr_descr[0],
102 lcd_scr_descr
103 };
104
105 int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
106
107 int lcd_show_screen(void *, void *, int,
108 void (*)(void *, int, int), void *);
109
110 const struct wsdisplay_accessops lcd_accessops = {
111 lcd_ioctl,
112 pxa2x0_lcd_mmap,
113 pxa2x0_lcd_alloc_screen,
114 pxa2x0_lcd_free_screen,
115 lcd_show_screen,
116 NULL, /* load_font */
117 };
118
119 #else
120 /*
121 * Interface to LCD framebuffer without wscons
122 */
123 dev_type_open(lcdopen);
124 dev_type_close(lcdclose);
125 dev_type_ioctl(lcdioctl);
126 dev_type_mmap(lcdmmap);
127 const struct cdevsw lcd_cdevsw = {
128 .d_open = lcdopen,
129 .d_close = lcdclose,
130 .d_read = noread,
131 .d_write = nowrite,
132 .d_ioctl = lcdioctl,
133 .d_stop = nostop,
134 .d_tty = notty,
135 .d_poll = nopoll,
136 .d_mmap = lcdmmap,
137 .d_kqfilter = nokqfilter,
138 .d_discard = nodiscard,
139 .d_flag = D_TTY
140 };
141
142 #endif
143
144 CFATTACH_DECL_NEW(lcd_obio, sizeof (struct pxa2x0_lcd_softc),
145 lcd_match, lcd_attach, NULL, NULL);
146
147 int
lcd_match(device_t parent,cfdata_t cf,void * aux)148 lcd_match( device_t parent, cfdata_t cf, void *aux )
149 {
150 return 1;
151 }
152
153 #ifdef G4250_LCD_NEC_NL3224BC35
154 /* NEC's QVGA LCD */
155 static const struct lcd_panel_geometry nec_NL3224BC35 =
156 {
157 320, /* Width */
158 240, /* Height */
159 0, /* No extra lines */
160
161 LCDPANEL_SINGLE|LCDPANEL_ACTIVE|LCDPANEL_PCP|
162 LCDPANEL_VSP|LCDPANEL_HSP,
163 7, /* clock divider, 6.25MHz at 100MHz */
164 0xff, /* AC bias pin freq */
165
166 6, /* horizontal sync pulse width */
167 70, /* BLW */
168 7, /* ELW */
169
170 10, /* vertical sync pulse width */
171 11, /* BFW */
172 1, /* EFW */
173 };
174 #endif
175
176 #ifdef G4250_LCD_TOSHIBA_LTM035
177 const struct lcd_panel_geometry toshiba_LTM035 =
178 {
179 240, /* Width */
180 320, /* Height */
181 0, /* No extra lines */
182
183 LCDPANEL_SINGLE|LCDPANEL_ACTIVE| /* LCDPANEL_PCP| */
184 LCDPANEL_VSP|LCDPANEL_HSP,
185 11, /* clock divider, 4.5 MHz at 100 MHz */
186 /* required: 4.28..4.7 MHz */
187 0xff, /* AC bias pin freq */
188
189 4, /* horizontal sync pulse width */
190 8, /* BLW (back porch) */
191 4, /* ELW (front porch) */
192
193 2, /* vertical sync pulse width */
194 2, /* BFW (back porch) */
195 3, /* EFW (front porch) */
196
197 };
198 #endif /* G4250_LCD_TOSHIBA_LTM035 */
199
lcd_attach(device_t parent,device_t self,void * aux)200 void lcd_attach(device_t parent, device_t self, void *aux)
201 {
202 struct pxa2x0_lcd_softc *sc = device_private(self);
203 struct pxaip_attach_args paa;
204 struct obio_attach_args *oba = aux;
205
206 sc->dev = self;
207
208 paa.pxa_name = "obio";
209 paa.pxa_iot = oba->oba_iot;
210 paa.pxa_addr = oba->oba_addr;
211 paa.pxa_size = 0; /* XXX */
212 paa.pxa_intr = oba->oba_intr;
213
214 #ifdef G4250_LCD_TOSHIBA_LTM035
215 # define PANEL toshiba_LTM035
216 #else
217 # define PANEL nec_NL3224BC35
218 #endif
219
220 pxa2x0_lcd_attach_sub(sc, &paa, &PANEL);
221
222
223 #if NWSDISPLAY > 0
224
225 {
226 struct wsemuldisplaydev_attach_args aa;
227
228 /* make wsdisplay screen list */
229 pxa2x0_lcd_setup_wsscreen(&lcd_bpp16_screen, &PANEL, NULL);
230 pxa2x0_lcd_setup_wsscreen(&lcd_bpp8_screen, &PANEL, NULL);
231 pxa2x0_lcd_setup_wsscreen(&lcd_bpp4_screen, &PANEL, NULL);
232
233 aa.console = 0;
234 aa.scrdata = &lcd_screen_list;
235 aa.accessops = &lcd_accessops;
236 aa.accesscookie = sc;
237
238 (void) config_found(self, &aa, wsemuldisplaydevprint,
239 CFARGS_NONE);
240 }
241 #else
242 {
243 struct pxa2x0_lcd_screen *screen;
244 int error;
245
246 error = pxa2x0_lcd_new_screen( sc, 16, &screen );
247 if (error == 0) {
248 sc->active = screen;
249 pxa2x0_lcd_start_dma(sc, screen);
250 }
251 }
252 #endif
253
254 #undef PANEL
255
256 }
257
258 #if NWSDISPLAY > 0
259
260 int
lcd_ioctl(void * v,void * vs,u_long cmd,void * data,int flag,struct lwp * l)261 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
262 {
263 struct pxa2x0_lcd_softc *sc = v;
264 struct obio_softc *osc =
265 device_private(device_parent(sc->dev));
266 uint16_t reg;
267
268 switch (cmd) {
269 case WSDISPLAYIO_SVIDEO:
270 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh,
271 G42XXEB_LCDCTL);
272 if (*(int *)data == WSDISPLAYIO_VIDEO_ON)
273 reg |= LCDCTL_BL_ON;
274 else
275 reg &= ~LCDCTL_BL_ON;
276 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh,
277 G42XXEB_LCDCTL, reg);
278 bus_space_write_1(osc->sc_iot, osc->sc_obioreg_ioh,
279 G42XXEB_LED, reg);
280 printf("LCD control: %x\n", reg);
281 break; /* turn on/off LCD controller */
282 }
283
284 return pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l);
285 }
286
287 int
lcd_show_screen(void * v,void * cookie,int waitok,void (* cb)(void *,int,int),void * cbarg)288 lcd_show_screen(void *v, void *cookie, int waitok,
289 void (*cb)(void *, int, int), void *cbarg)
290 {
291 struct pxa2x0_lcd_softc *sc = v;
292 struct obio_softc *osc =
293 device_private(device_parent(sc->dev));
294 uint16_t reg;
295
296 pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg);
297
298 /* Turn on LCD backlight.
299 XXX: with fixed blightness. want new ioctl to set blightness. */
300 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
301 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
302 (reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
303
304 return 0;
305 }
306
307
308
309 #else /* NWSDISPLAY==0 */
310
311 int
lcdopen(dev_t dev,int oflags,int devtype,struct lwp * l)312 lcdopen(dev_t dev, int oflags, int devtype, struct lwp *l)
313 {
314 struct pxa2x0_lcd_softc *sc =
315 device_lookup_private(&lcd_cd, minor(dev));
316 struct obio_softc *osc =
317 device_private(device_parent(sc->dev));
318 uint16_t reg;
319
320 /* Turn on LCD backlight.
321 XXX: with fixed blightness. want new ioctl to set blightness. */
322 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
323 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
324 (reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
325
326
327 return 0;
328 }
329
330 int
lcdclose(dev_t dev,int fflag,int devtype,struct lwp * l)331 lcdclose(dev_t dev, int fflag, int devtype, struct lwp *l)
332 {
333 return 0;
334 }
335
336 paddr_t
lcdmmap(dev_t dev,off_t offset,int size)337 lcdmmap(dev_t dev, off_t offset, int size)
338 {
339 struct pxa2x0_lcd_softc *sc =
340 device_lookup_private(&lcd_cd, minor(dev));
341 struct pxa2x0_lcd_screen *scr = sc->active;
342
343 return bus_dmamem_mmap( &pxa2x0_bus_dma_tag, scr->segs, scr->nsegs,
344 offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT );
345 }
346
347 int
lcdioctl(dev_t dev,u_long cmd,void * data,int fflag,struct lwp * l)348 lcdioctl(dev_t dev, u_long cmd, void *data,
349 int fflag, struct lwp *l)
350 {
351 return EOPNOTSUPP;
352 }
353
354 #endif /* NWSDISPLAY>0 */
355