1 /* $NetBSD: g42xxeb_lcd.c,v 1.18 2021/08/07 16:18:49 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 #include <sys/malloc.h>
41
42 #include <dev/cons.h>
43 #include <dev/wscons/wsconsio.h>
44 #include <dev/wscons/wsdisplayvar.h>
45 #include <dev/wscons/wscons_callbacks.h>
46
47 #include <sys/bus.h>
48 #include <arm/sa11x0/sa11x0_var.h>
49 #include <arm/xscale/pxa2x0var.h>
50 #include <arm/xscale/pxa2x0reg.h>
51 #include <arm/xscale/pxa2x0_lcd.h>
52
53 #include <arch/evbarm/g42xxeb/g42xxeb_reg.h>
54 #include <arch/evbarm/g42xxeb/g42xxeb_var.h>
55
56 #include "wsdisplay.h"
57 #include "ioconf.h"
58
59 int lcd_match(device_t, cfdata_t, void *);
60 void lcd_attach(device_t, device_t, void *);
61 int lcdintr(void *);
62
63 #if NWSDISPLAY > 0
64
65 /*
66 * wsdisplay glue
67 */
68 struct pxa2x0_wsscreen_descr lcd_bpp16_screen = {
69 {
70 "bpp16", 0, 0,
71 &pxa2x0_lcd_emulops,
72 0, 0,
73 WSSCREEN_WSCOLORS,
74 },
75 16 /* bits per pixel */
76 }, lcd_bpp8_screen = {
77 {
78 "bpp8", 0, 0,
79 &pxa2x0_lcd_emulops,
80 0, 0,
81 WSSCREEN_WSCOLORS,
82 },
83 8 /* bits per pixel */
84 }, lcd_bpp4_screen = {
85 {
86 "bpp4", 0, 0,
87 &pxa2x0_lcd_emulops,
88 0, 0,
89 WSSCREEN_WSCOLORS,
90 },
91 4 /* bits per pixel */
92 };
93
94
95 static const struct wsscreen_descr *lcd_scr_descr[] = {
96 &lcd_bpp4_screen.c,
97 &lcd_bpp8_screen.c,
98 &lcd_bpp16_screen.c,
99 };
100
101 const struct wsscreen_list lcd_screen_list = {
102 sizeof lcd_scr_descr / sizeof lcd_scr_descr[0],
103 lcd_scr_descr
104 };
105
106 int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
107
108 int lcd_show_screen(void *, void *, int,
109 void (*)(void *, int, int), void *);
110
111 const struct wsdisplay_accessops lcd_accessops = {
112 lcd_ioctl,
113 pxa2x0_lcd_mmap,
114 pxa2x0_lcd_alloc_screen,
115 pxa2x0_lcd_free_screen,
116 lcd_show_screen,
117 NULL, /* load_font */
118 };
119
120 #else
121 /*
122 * Interface to LCD framebuffer without wscons
123 */
124 dev_type_open(lcdopen);
125 dev_type_close(lcdclose);
126 dev_type_ioctl(lcdioctl);
127 dev_type_mmap(lcdmmap);
128 const struct cdevsw lcd_cdevsw = {
129 .d_open = lcdopen,
130 .d_close = lcdclose,
131 .d_read = noread,
132 .d_write = nowrite,
133 .d_ioctl = lcdioctl,
134 .d_stop = nostop,
135 .d_tty = notty,
136 .d_poll = nopoll,
137 .d_mmap = lcdmmap,
138 .d_kqfilter = nokqfilter,
139 .d_discard = nodiscard,
140 .d_flag = D_TTY
141 };
142
143 #endif
144
145 CFATTACH_DECL_NEW(lcd_obio, sizeof (struct pxa2x0_lcd_softc),
146 lcd_match, lcd_attach, NULL, NULL);
147
148 int
lcd_match(device_t parent,cfdata_t cf,void * aux)149 lcd_match( device_t parent, cfdata_t cf, void *aux )
150 {
151 return 1;
152 }
153
154 #ifdef G4250_LCD_NEC_NL3224BC35
155 /* NEC's QVGA LCD */
156 static const struct lcd_panel_geometry nec_NL3224BC35 =
157 {
158 320, /* Width */
159 240, /* Height */
160 0, /* No extra lines */
161
162 LCDPANEL_SINGLE|LCDPANEL_ACTIVE|LCDPANEL_PCP|
163 LCDPANEL_VSP|LCDPANEL_HSP,
164 7, /* clock divider, 6.25MHz at 100MHz */
165 0xff, /* AC bias pin freq */
166
167 6, /* horizontal sync pulse width */
168 70, /* BLW */
169 7, /* ELW */
170
171 10, /* vertical sync pulse width */
172 11, /* BFW */
173 1, /* EFW */
174 };
175 #endif
176
177 #ifdef G4250_LCD_TOSHIBA_LTM035
178 const struct lcd_panel_geometry toshiba_LTM035 =
179 {
180 240, /* Width */
181 320, /* Height */
182 0, /* No extra lines */
183
184 LCDPANEL_SINGLE|LCDPANEL_ACTIVE| /* LCDPANEL_PCP| */
185 LCDPANEL_VSP|LCDPANEL_HSP,
186 11, /* clock divider, 4.5 MHz at 100 MHz */
187 /* required: 4.28..4.7 MHz */
188 0xff, /* AC bias pin freq */
189
190 4, /* horizontal sync pulse width */
191 8, /* BLW (back porch) */
192 4, /* ELW (front porch) */
193
194 2, /* vertical sync pulse width */
195 2, /* BFW (back porch) */
196 3, /* EFW (front porch) */
197
198 };
199 #endif /* G4250_LCD_TOSHIBA_LTM035 */
200
lcd_attach(device_t parent,device_t self,void * aux)201 void lcd_attach(device_t parent, device_t self, void *aux)
202 {
203 struct pxa2x0_lcd_softc *sc = device_private(self);
204 struct pxaip_attach_args paa;
205 struct obio_attach_args *oba = aux;
206
207 sc->dev = self;
208
209 paa.pxa_name = "obio";
210 paa.pxa_iot = oba->oba_iot;
211 paa.pxa_addr = oba->oba_addr;
212 paa.pxa_size = 0; /* XXX */
213 paa.pxa_intr = oba->oba_intr;
214
215 #ifdef G4250_LCD_TOSHIBA_LTM035
216 # define PANEL toshiba_LTM035
217 #else
218 # define PANEL nec_NL3224BC35
219 #endif
220
221 pxa2x0_lcd_attach_sub(sc, &paa, &PANEL);
222
223
224 #if NWSDISPLAY > 0
225
226 {
227 struct wsemuldisplaydev_attach_args aa;
228
229 /* make wsdisplay screen list */
230 pxa2x0_lcd_setup_wsscreen(&lcd_bpp16_screen, &PANEL, NULL);
231 pxa2x0_lcd_setup_wsscreen(&lcd_bpp8_screen, &PANEL, NULL);
232 pxa2x0_lcd_setup_wsscreen(&lcd_bpp4_screen, &PANEL, NULL);
233
234 aa.console = 0;
235 aa.scrdata = &lcd_screen_list;
236 aa.accessops = &lcd_accessops;
237 aa.accesscookie = sc;
238
239 (void) config_found(self, &aa, wsemuldisplaydevprint,
240 CFARGS_NONE);
241 }
242 #else
243 {
244 struct pxa2x0_lcd_screen *screen;
245 int error;
246
247 error = pxa2x0_lcd_new_screen( sc, 16, &screen );
248 if (error == 0) {
249 sc->active = screen;
250 pxa2x0_lcd_start_dma(sc, screen);
251 }
252 }
253 #endif
254
255 #undef PANEL
256
257 }
258
259 #if NWSDISPLAY > 0
260
261 int
lcd_ioctl(void * v,void * vs,u_long cmd,void * data,int flag,struct lwp * l)262 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
263 {
264 struct pxa2x0_lcd_softc *sc = v;
265 struct obio_softc *osc =
266 device_private(device_parent(sc->dev));
267 uint16_t reg;
268
269 switch (cmd) {
270 case WSDISPLAYIO_SVIDEO:
271 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh,
272 G42XXEB_LCDCTL);
273 if (*(int *)data == WSDISPLAYIO_VIDEO_ON)
274 reg |= LCDCTL_BL_ON;
275 else
276 reg &= ~LCDCTL_BL_ON;
277 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh,
278 G42XXEB_LCDCTL, reg);
279 bus_space_write_1(osc->sc_iot, osc->sc_obioreg_ioh,
280 G42XXEB_LED, reg);
281 printf("LCD control: %x\n", reg);
282 break; /* turn on/off LCD controller */
283 }
284
285 return pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l);
286 }
287
288 int
lcd_show_screen(void * v,void * cookie,int waitok,void (* cb)(void *,int,int),void * cbarg)289 lcd_show_screen(void *v, void *cookie, int waitok,
290 void (*cb)(void *, int, int), void *cbarg)
291 {
292 struct pxa2x0_lcd_softc *sc = v;
293 struct obio_softc *osc =
294 device_private(device_parent(sc->dev));
295 uint16_t reg;
296
297 pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg);
298
299 /* Turn on LCD backlight.
300 XXX: with fixed blightness. want new ioctl to set blightness. */
301 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
302 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
303 (reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
304
305 return 0;
306 }
307
308
309
310 #else /* NWSDISPLAY==0 */
311
312 int
lcdopen(dev_t dev,int oflags,int devtype,struct lwp * l)313 lcdopen(dev_t dev, int oflags, int devtype, struct lwp *l)
314 {
315 struct pxa2x0_lcd_softc *sc =
316 device_lookup_private(&lcd_cd, minor(dev));
317 struct obio_softc *osc =
318 device_private(device_parent(sc->dev));
319 uint16_t reg;
320
321 /* Turn on LCD backlight.
322 XXX: with fixed blightness. want new ioctl to set blightness. */
323 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL);
324 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL,
325 (reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON);
326
327
328 return 0;
329 }
330
331 int
lcdclose(dev_t dev,int fflag,int devtype,struct lwp * l)332 lcdclose(dev_t dev, int fflag, int devtype, struct lwp *l)
333 {
334 return 0;
335 }
336
337 paddr_t
lcdmmap(dev_t dev,off_t offset,int size)338 lcdmmap(dev_t dev, off_t offset, int size)
339 {
340 struct pxa2x0_lcd_softc *sc =
341 device_lookup_private(&lcd_cd, minor(dev));
342 struct pxa2x0_lcd_screen *scr = sc->active;
343
344 return bus_dmamem_mmap( &pxa2x0_bus_dma_tag, scr->segs, scr->nsegs,
345 offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT );
346 }
347
348 int
lcdioctl(dev_t dev,u_long cmd,void * data,int fflag,struct lwp * l)349 lcdioctl(dev_t dev, u_long cmd, void *data,
350 int fflag, struct lwp *l)
351 {
352 return EOPNOTSUPP;
353 }
354
355 #endif /* NWSDISPLAY>0 */
356