xref: /netbsd-src/sys/arch/zaurus/dev/scoop.c (revision 6a493d6bc668897c91594964a732d38505b70cbb) 
1 /*	$NetBSD: scoop.c,v 1.12 2012/10/27 17:18:14 chs Exp $	*/
2 /*	$OpenBSD: zaurus_scoop.c,v 1.12 2005/11/17 05:26:31 uwe Exp $	*/
3 
4 /*
5  * Copyright (c) 2005 Uwe Stuehler <uwe@bsdx.de>
6  *
7  * Permission to use, copy, modify, and distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 #include <sys/cdefs.h>
21 __KERNEL_RCSID(0, "$NetBSD: scoop.c,v 1.12 2012/10/27 17:18:14 chs Exp $");
22 
23 #include <sys/param.h>
24 #include <sys/systm.h>
25 #include <sys/device.h>
26 #include <sys/conf.h>
27 #include <sys/gpio.h>
28 #include <sys/bus.h>
29 
30 #include <arm/xscale/pxa2x0var.h>
31 
32 #include <zaurus/zaurus/zaurus_reg.h>
33 #include <zaurus/zaurus/zaurus_var.h>
34 
35 #include <zaurus/dev/scoopreg.h>
36 #include <zaurus/dev/scoopvar.h>
37 
38 #include "ioconf.h"
39 
40 struct scoop_softc {
41 	device_t		sc_dev;
42 
43 	bus_space_tag_t		sc_iot;
44 	bus_space_handle_t	sc_ioh;
45 
46 	uint16_t		sc_gpwr;	/* GPIO state before suspend */
47 };
48 
49 static int	scoopmatch(device_t, cfdata_t, void *);
50 static void	scoopattach(device_t, device_t, void *);
51 
52 CFATTACH_DECL_NEW(scoop, sizeof(struct scoop_softc),
53     scoopmatch, scoopattach, NULL, NULL);
54 
55 #if 0
56 static int	scoop_gpio_pin_read(struct scoop_softc *, int);
57 #endif
58 static void	scoop_gpio_pin_write(struct scoop_softc *, int, int);
59 static void	scoop_gpio_pin_ctl(struct scoop_softc *, int, int);
60 
61 static struct scoop_softc *backlight_sc;
62 static uint8_t backlight_on_init = 1;
63 static uint8_t backlight_cont_init = 0;
64 
65 enum scoop_card {
66 	SD_CARD,
67 	CF_CARD		/* socket 0 (external) */
68 };
69 
70 static void	scoop0_set_card_power(enum scoop_card card, int new_cpr);
71 
72 static int
73 scoopmatch(device_t parent, cfdata_t cf, void *aux)
74 {
75 
76 	/*
77 	 * Only C3000-like models are known to have two SCOOPs.
78 	 */
79         if (ZAURUS_ISC3000)
80 		return (cf->cf_unit < 2);
81 	return (cf->cf_unit == 0);
82 }
83 
84 static void
85 scoopattach(device_t parent, device_t self, void *aux)
86 {
87 	struct scoop_softc *sc = device_private(self);
88 	struct pxaip_attach_args *pxa = aux;
89 	bus_addr_t addr;
90 	bus_size_t size;
91 
92 	sc->sc_dev = self;
93 	sc->sc_iot = pxa->pxa_iot;
94 
95 	aprint_normal(": PCMCIA/GPIO controller\n");
96 	aprint_naive("\n");
97 
98 	if (pxa->pxa_addr != -1)
99 		addr = pxa->pxa_addr;
100 	else if (device_unit(sc->sc_dev) == 0)
101 		addr = C3000_SCOOP0_BASE;
102 	else
103 		addr = C3000_SCOOP1_BASE;
104 
105 	size = pxa->pxa_size < SCOOP_SIZE ? SCOOP_SIZE : pxa->pxa_size;
106 
107 	if (bus_space_map(sc->sc_iot, addr, size, 0, &sc->sc_ioh) != 0) {
108 		aprint_error_dev(sc->sc_dev, "couldn't map registers\n");
109 		return;
110 	}
111 
112 	if (ZAURUS_ISC3000 && device_unit(sc->sc_dev) == 1) {
113 		scoop_gpio_pin_ctl(sc, SCOOP1_AKIN_PULLUP, GPIO_PIN_OUTPUT);
114 		scoop_gpio_pin_write(sc, SCOOP1_AKIN_PULLUP, GPIO_PIN_LOW);
115 		backlight_sc = sc;
116 		scoop_set_backlight(backlight_on_init, backlight_cont_init);
117 	} else if (ZAURUS_ISC860) {
118 		scoop_gpio_pin_ctl(sc, SCOOP0_AKIN_PULLUP, GPIO_PIN_OUTPUT);
119 		scoop_gpio_pin_write(sc, SCOOP0_AKIN_PULLUP, GPIO_PIN_LOW);
120 		backlight_sc = sc;
121 		scoop_set_backlight(backlight_on_init, backlight_cont_init);
122 	}
123 }
124 
125 #if 0
126 static int
127 scoop_gpio_pin_read(struct scoop_softc *sc, int pin)
128 {
129 	uint16_t bit = (1 << pin);
130 	uint16_t rv;
131 
132 	rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
133 	return (rv & bit) ? 1 : 0;
134 }
135 #endif
136 
137 static void
138 scoop_gpio_pin_write(struct scoop_softc *sc, int pin, int level)
139 {
140 	uint16_t bit = (1 << pin);
141 	uint16_t rv;
142 
143 	rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
144 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
145 	    (level == GPIO_PIN_LOW) ? (rv & ~bit) : (rv | bit));
146 }
147 
148 static void
149 scoop_gpio_pin_ctl(struct scoop_softc *sc, int pin, int flags)
150 {
151 	uint16_t bit = (1 << pin);
152 	uint16_t rv;
153 
154 	rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPCR);
155 	switch (flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) {
156 	case GPIO_PIN_INPUT:
157 		rv &= ~bit;
158 		break;
159 	case GPIO_PIN_OUTPUT:
160 		rv |= bit;
161 		break;
162 	}
163 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPCR, rv);
164 }
165 
166 /*
167  * Turn the LCD background light and contrast signal on or off.
168  */
169 void
170 scoop_set_backlight(int on, int cont)
171 {
172 	struct scoop_softc *sc = backlight_sc;
173 
174 	if (sc == NULL) {
175 		backlight_cont_init = cont;
176 		backlight_on_init = on;
177 	} else {
178 		if (ZAURUS_ISC3000) {
179 			scoop_gpio_pin_write(sc, SCOOP1_BACKLIGHT_CONT, !cont);
180 			scoop_gpio_pin_write(sc, SCOOP1_BACKLIGHT_ON, on);
181 		} else if (ZAURUS_ISC860) {
182 			scoop_gpio_pin_write(sc, SCOOP0_BACKLIGHT_CONT, cont);
183 		}
184 	}
185 }
186 
187 /*
188  * Turn the infrared LED on or off (must be on while transmitting).
189  */
190 void
191 scoop_set_irled(int on)
192 {
193 	struct scoop_softc *sc;
194 
195 	sc = device_lookup_private(&scoop_cd, 1);
196 	if (sc != NULL) {
197 		/* IR_ON is inverted */
198 		scoop_gpio_pin_write(sc, SCOOP1_IR_ON, !on);
199 	}
200 }
201 
202 /*
203  * Turn the green and orange LEDs on or off.  If the orange LED is on,
204  * then it is wired to indicate if A/C is connected.  The green LED has
205  * no such predefined function.
206  */
207 void
208 scoop_led_set(int led, int on)
209 {
210 	struct scoop_softc *sc;
211 
212 	sc = device_lookup_private(&scoop_cd, 0);
213 	if (sc != NULL) {
214 		if ((led & SCOOP_LED_GREEN) != 0) {
215 			scoop_gpio_pin_write(sc, SCOOP0_LED_GREEN, on);
216 		}
217 		if (scoop_cd.cd_ndevs > 1 && (led & SCOOP_LED_ORANGE) != 0) {
218 			scoop_gpio_pin_write(sc, SCOOP0_LED_ORANGE_C3000, on);
219 		}
220 	}
221 }
222 
223 /*
224  * Enable or disable the headphone output connection.
225  */
226 void
227 scoop_set_headphone(int on)
228 {
229 	struct scoop_softc *sc;
230 
231 	sc = device_lookup_private(&scoop_cd, 0);
232 	if (sc == NULL)
233 		return;
234 
235 	scoop_gpio_pin_ctl(sc, SCOOP0_MUTE_L, GPIO_PIN_OUTPUT);
236 	scoop_gpio_pin_ctl(sc, SCOOP0_MUTE_R, GPIO_PIN_OUTPUT);
237 
238 	if (on) {
239 		scoop_gpio_pin_write(sc, SCOOP0_MUTE_L, GPIO_PIN_HIGH);
240 		scoop_gpio_pin_write(sc, SCOOP0_MUTE_R, GPIO_PIN_HIGH);
241 	} else {
242 		scoop_gpio_pin_write(sc, SCOOP0_MUTE_L, GPIO_PIN_LOW);
243 		scoop_gpio_pin_write(sc, SCOOP0_MUTE_R, GPIO_PIN_LOW);
244 	}
245 }
246 
247 /*
248  * Enable or disable the mic bias
249  */
250 void
251 scoop_set_mic_bias(int onoff)
252 {
253 	struct scoop_softc *sc1;
254 
255 	sc1 = device_lookup_private(&scoop_cd, 1);
256 	if (sc1 != NULL)
257 		scoop_gpio_pin_write(sc1, SCOOP1_MIC_BIAS, onoff);
258 }
259 
260 /*
261  * Turn on pullup resistor while not reading the remote control.
262  */
263 void
264 scoop_akin_pullup(int enable)
265 {
266 	struct scoop_softc *sc0;
267 	struct scoop_softc *sc1;
268 
269 	sc0 = device_lookup_private(&scoop_cd, 0);
270 	sc1 = device_lookup_private(&scoop_cd, 1);
271 
272 	if (sc1 != NULL) {
273 		scoop_gpio_pin_write(sc1, SCOOP1_AKIN_PULLUP, enable);
274 	} else if (sc0 != NULL) {
275 		scoop_gpio_pin_write(sc0, SCOOP0_AKIN_PULLUP, enable);
276 	}
277 }
278 
279 void
280 scoop_battery_temp_adc(int enable)
281 {
282 	struct scoop_softc *sc;
283 
284 	sc = device_lookup_private(&scoop_cd, 0);
285 
286 	if (sc != NULL) {
287 		scoop_gpio_pin_write(sc, SCOOP0_ADC_TEMP_ON_C3000, enable);
288 	}
289 }
290 
291 void
292 scoop_charge_battery(int enable, int voltage_high)
293 {
294 	struct scoop_softc *sc;
295 
296 	if (ZAURUS_ISC860)
297 		return;
298 
299 	sc = device_lookup_private(&scoop_cd, 0);
300 
301 	if (sc != NULL) {
302 		scoop_gpio_pin_write(sc, SCOOP0_JK_B_C3000, voltage_high);
303 		scoop_gpio_pin_write(sc, SCOOP0_CHARGE_OFF_C3000, !enable);
304 	}
305 }
306 
307 void
308 scoop_discharge_battery(int enable)
309 {
310 	struct scoop_softc *sc;
311 
312 	if (ZAURUS_ISC860)
313 		return;
314 
315 	sc = device_lookup_private(&scoop_cd, 0);
316 
317 	if (sc != NULL) {
318 		scoop_gpio_pin_write(sc, SCOOP0_JK_A_C3000, enable);
319 	}
320 }
321 
322 /*
323  * Enable or disable 3.3V power to the SD/MMC card slot.
324  */
325 void
326 scoop_set_sdmmc_power(int on)
327 {
328 
329 	scoop0_set_card_power(SD_CARD, on ? SCP_CPR_SD_3V : SCP_CPR_OFF);
330 }
331 
332 /*
333  * The Card Power Register of the first SCOOP unit controls the power
334  * for the first CompactFlash slot and the SD/MMC card slot as well.
335  */
336 void
337 scoop0_set_card_power(enum scoop_card card, int new_cpr)
338 {
339 	struct scoop_softc *sc;
340 	bus_space_tag_t iot;
341 	bus_space_handle_t ioh;
342 	uint16_t cpr;
343 
344 	if (ZAURUS_ISC860)
345 		return;
346 
347 	sc = device_lookup_private(&scoop_cd, 0);
348 	if (sc == NULL)
349 		return;
350 
351 	iot = sc->sc_iot;
352 	ioh = sc->sc_ioh;
353 
354 	cpr = bus_space_read_2(iot, ioh, SCOOP_CPR);
355 	if (new_cpr & SCP_CPR_VOLTAGE_MSK) {
356 		if (card == CF_CARD)
357 			cpr |= SCP_CPR_5V;
358 		else if (card == SD_CARD)
359 			cpr |= SCP_CPR_SD_3V;
360 
361 		scoop_gpio_pin_write(sc, SCOOP0_CF_POWER_C3000, 1);
362 		if (!ISSET(cpr, SCP_CPR_5V) && !ISSET(cpr, SCP_CPR_SD_3V))
363 			delay(5000);
364 		bus_space_write_2(iot, ioh, SCOOP_CPR, cpr | new_cpr);
365 	} else {
366 		if (card == CF_CARD)
367 			cpr &= ~SCP_CPR_5V;
368 		else if (card == SD_CARD)
369 			cpr &= ~SCP_CPR_SD_3V;
370 
371 		if (!ISSET(cpr, SCP_CPR_5V) && !ISSET(cpr, SCP_CPR_SD_3V)) {
372 			bus_space_write_2(iot, ioh, SCOOP_CPR, SCP_CPR_OFF);
373 			delay(1000);
374 			scoop_gpio_pin_write(sc, SCOOP0_CF_POWER_C3000, 0);
375 		} else
376 			bus_space_write_2(iot, ioh, SCOOP_CPR, cpr | new_cpr);
377 	}
378 }
379 
380 void
381 scoop_check_mcr(void)
382 {
383 	struct scoop_softc *sc0, *sc1, *sc;
384 	uint16_t v;
385 
386 	sc0 = device_lookup_private(&scoop_cd, 0);
387 	sc1 = device_lookup_private(&scoop_cd, 1);
388 
389 	/* C3000 */
390 	if (sc1 != NULL) {
391 		sc = sc0;
392 		v = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR);
393 		if ((v & 0x100) == 0) {
394 			bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR,
395 			    0x0101);
396 		}
397 
398 		sc = sc1;
399 		v = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR);
400 		if ((v & 0x100) == 0) {
401 			bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_MCR,
402 			    0x0101);
403 		}
404 	}
405 }
406 
407 void
408 scoop_suspend(void)
409 {
410 	struct scoop_softc *sc, *sc0, *sc1;
411 	uint32_t rv;
412 
413 	if (ZAURUS_ISC860)
414 		return;
415 
416 	sc0 = device_lookup_private(&scoop_cd, 0);
417 	sc1 = device_lookup_private(&scoop_cd, 1);
418 
419 	if (sc0 != NULL) {
420 		sc = sc0;
421 		sc->sc_gpwr = bus_space_read_2(sc->sc_iot, sc->sc_ioh,
422 		    SCOOP_GPWR);
423 		/* C3000 */
424 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
425 		    sc->sc_gpwr & ~((1<<SCOOP0_MUTE_L) | (1<<SCOOP0_MUTE_R) |
426 		    (1<<SCOOP0_JK_A_C3000) | (1<<SCOOP0_ADC_TEMP_ON_C3000) |
427 		    (1<<SCOOP0_LED_GREEN)));
428 	}
429 
430 	/* C3000 */
431 	if (sc1 != NULL) {
432 		sc = sc1;
433 		sc->sc_gpwr = bus_space_read_2(sc->sc_iot, sc->sc_ioh,
434 		    SCOOP_GPWR);
435 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
436 		    sc->sc_gpwr & ~((1<<SCOOP1_RESERVED_4) |
437 		    (1<<SCOOP1_RESERVED_5) | (1<<SCOOP1_RESERVED_6) |
438 		    (1<<SCOOP1_BACKLIGHT_CONT) | (1<<SCOOP1_BACKLIGHT_ON) |
439 		    (1<<SCOOP1_MIC_BIAS)));
440 		rv = bus_space_read_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR);
441 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
442 		    rv | ((1<<SCOOP1_IR_ON) | (1<<SCOOP1_RESERVED_3)));
443 	}
444 }
445 
446 void
447 scoop_resume(void)
448 {
449 	struct scoop_softc *sc, *sc0, *sc1;
450 
451 	sc0 = device_lookup_private(&scoop_cd, 0);
452 	sc1 = device_lookup_private(&scoop_cd, 1);
453 
454 	if (sc0 != NULL) {
455 		sc = sc0;
456 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
457 		    sc->sc_gpwr);
458 	}
459 
460 	if (sc1 != NULL) {
461 		sc = sc1;
462 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, SCOOP_GPWR,
463 		    sc->sc_gpwr);
464 	}
465 }
466