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-rw-r--r--arch/arm/mach-omap2/board-n8x0.c445
1 files changed, 445 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index 9de03f8e2e68..4cab0522d7ce 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -17,6 +17,7 @@
17#include <linux/init.h> 17#include <linux/init.h>
18#include <linux/io.h> 18#include <linux/io.h>
19#include <linux/stddef.h> 19#include <linux/stddef.h>
20#include <linux/i2c.h>
20#include <linux/spi/spi.h> 21#include <linux/spi/spi.h>
21#include <linux/usb/musb.h> 22#include <linux/usb/musb.h>
22 23
@@ -25,11 +26,17 @@
25 26
26#include <plat/board.h> 27#include <plat/board.h>
27#include <plat/common.h> 28#include <plat/common.h>
29#include <plat/menelaus.h>
28#include <mach/irqs.h> 30#include <mach/irqs.h>
29#include <plat/mcspi.h> 31#include <plat/mcspi.h>
30#include <plat/onenand.h> 32#include <plat/onenand.h>
33#include <plat/mmc.h>
31#include <plat/serial.h> 34#include <plat/serial.h>
32 35
36static int slot1_cover_open;
37static int slot2_cover_open;
38static struct device *mmc_device;
39
33static struct omap2_mcspi_device_config p54spi_mcspi_config = { 40static struct omap2_mcspi_device_config p54spi_mcspi_config = {
34 .turbo_mode = 0, 41 .turbo_mode = 0,
35 .single_channel = 1, 42 .single_channel = 1,
@@ -96,6 +103,442 @@ static void __init n8x0_onenand_init(void) {}
96 103
97#endif 104#endif
98 105
106#if defined(CONFIG_MENELAUS) && \
107 (defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE))
108
109/*
110 * On both N800 and N810, only the first of the two MMC controllers is in use.
111 * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
112 * On N800, both slots are powered via Menelaus. On N810, only one of the
113 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
114 *
115 * VMMC slot 1 on both N800 and N810
116 * VDCDC3_APE and VMCS2_APE slot 2 on N800
117 * GPIO23 and GPIO9 slot 2 EMMC on N810
118 *
119 */
120#define N8X0_SLOT_SWITCH_GPIO 96
121#define N810_EMMC_VSD_GPIO 23
122#define NN810_EMMC_VIO_GPIO 9
123
124static int n8x0_mmc_switch_slot(struct device *dev, int slot)
125{
126#ifdef CONFIG_MMC_DEBUG
127 dev_dbg(dev, "Choose slot %d\n", slot + 1);
128#endif
129 gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
130 return 0;
131}
132
133static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
134 int power_on, int vdd)
135{
136 int mV;
137
138#ifdef CONFIG_MMC_DEBUG
139 dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
140 power_on ? "on" : "off", vdd);
141#endif
142 if (slot == 0) {
143 if (!power_on)
144 return menelaus_set_vmmc(0);
145 switch (1 << vdd) {
146 case MMC_VDD_33_34:
147 case MMC_VDD_32_33:
148 case MMC_VDD_31_32:
149 mV = 3100;
150 break;
151 case MMC_VDD_30_31:
152 mV = 3000;
153 break;
154 case MMC_VDD_28_29:
155 mV = 2800;
156 break;
157 case MMC_VDD_165_195:
158 mV = 1850;
159 break;
160 default:
161 BUG();
162 }
163 return menelaus_set_vmmc(mV);
164 } else {
165 if (!power_on)
166 return menelaus_set_vdcdc(3, 0);
167 switch (1 << vdd) {
168 case MMC_VDD_33_34:
169 case MMC_VDD_32_33:
170 mV = 3300;
171 break;
172 case MMC_VDD_30_31:
173 case MMC_VDD_29_30:
174 mV = 3000;
175 break;
176 case MMC_VDD_28_29:
177 case MMC_VDD_27_28:
178 mV = 2800;
179 break;
180 case MMC_VDD_24_25:
181 case MMC_VDD_23_24:
182 mV = 2400;
183 break;
184 case MMC_VDD_22_23:
185 case MMC_VDD_21_22:
186 mV = 2200;
187 break;
188 case MMC_VDD_20_21:
189 mV = 2000;
190 break;
191 case MMC_VDD_165_195:
192 mV = 1800;
193 break;
194 default:
195 BUG();
196 }
197 return menelaus_set_vdcdc(3, mV);
198 }
199 return 0;
200}
201
202static void n810_set_power_emmc(struct device *dev,
203 int power_on)
204{
205 dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
206
207 if (power_on) {
208 gpio_set_value(N810_EMMC_VSD_GPIO, 1);
209 msleep(1);
210 gpio_set_value(NN810_EMMC_VIO_GPIO, 1);
211 msleep(1);
212 } else {
213 gpio_set_value(NN810_EMMC_VIO_GPIO, 0);
214 msleep(50);
215 gpio_set_value(N810_EMMC_VSD_GPIO, 0);
216 msleep(50);
217 }
218}
219
220static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
221 int vdd)
222{
223 if (machine_is_nokia_n800() || slot == 0)
224 return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
225
226 n810_set_power_emmc(dev, power_on);
227
228 return 0;
229}
230
231static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
232{
233 int r;
234
235 dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
236 bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
237 BUG_ON(slot != 0 && slot != 1);
238 slot++;
239 switch (bus_mode) {
240 case MMC_BUSMODE_OPENDRAIN:
241 r = menelaus_set_mmc_opendrain(slot, 1);
242 break;
243 case MMC_BUSMODE_PUSHPULL:
244 r = menelaus_set_mmc_opendrain(slot, 0);
245 break;
246 default:
247 BUG();
248 }
249 if (r != 0 && printk_ratelimit())
250 dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
251 slot);
252 return r;
253}
254
255static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
256{
257 slot++;
258 BUG_ON(slot != 1 && slot != 2);
259 if (slot == 1)
260 return slot1_cover_open;
261 else
262 return slot2_cover_open;
263}
264
265static void n8x0_mmc_callback(void *data, u8 card_mask)
266{
267 int bit, *openp, index;
268
269 if (machine_is_nokia_n800()) {
270 bit = 1 << 1;
271 openp = &slot2_cover_open;
272 index = 1;
273 } else {
274 bit = 1;
275 openp = &slot1_cover_open;
276 index = 0;
277 }
278
279 if (card_mask & bit)
280 *openp = 1;
281 else
282 *openp = 0;
283
284 omap_mmc_notify_cover_event(mmc_device, index, *openp);
285}
286
287void n8x0_mmc_slot1_cover_handler(void *arg, int closed_state)
288{
289 if (mmc_device == NULL)
290 return;
291
292 slot1_cover_open = !closed_state;
293 omap_mmc_notify_cover_event(mmc_device, 0, closed_state);
294}
295
296static int n8x0_mmc_late_init(struct device *dev)
297{
298 int r, bit, *openp;
299 int vs2sel;
300
301 mmc_device = dev;
302
303 r = menelaus_set_slot_sel(1);
304 if (r < 0)
305 return r;
306
307 if (machine_is_nokia_n800())
308 vs2sel = 0;
309 else
310 vs2sel = 2;
311
312 r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
313 if (r < 0)
314 return r;
315
316 n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
317 n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
318
319 r = menelaus_set_mmc_slot(1, 1, 0, 1);
320 if (r < 0)
321 return r;
322 r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
323 if (r < 0)
324 return r;
325
326 r = menelaus_get_slot_pin_states();
327 if (r < 0)
328 return r;
329
330 if (machine_is_nokia_n800()) {
331 bit = 1 << 1;
332 openp = &slot2_cover_open;
333 } else {
334 bit = 1;
335 openp = &slot1_cover_open;
336 slot2_cover_open = 0;
337 }
338
339 /* All slot pin bits seem to be inversed until first switch change */
340 if (r == 0xf || r == (0xf & ~bit))
341 r = ~r;
342
343 if (r & bit)
344 *openp = 1;
345 else
346 *openp = 0;
347
348 r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
349
350 return r;
351}
352
353static void n8x0_mmc_shutdown(struct device *dev)
354{
355 int vs2sel;
356
357 if (machine_is_nokia_n800())
358 vs2sel = 0;
359 else
360 vs2sel = 2;
361
362 menelaus_set_mmc_slot(1, 0, 0, 0);
363 menelaus_set_mmc_slot(2, 0, vs2sel, 0);
364}
365
366static void n8x0_mmc_cleanup(struct device *dev)
367{
368 menelaus_unregister_mmc_callback();
369
370 gpio_free(N8X0_SLOT_SWITCH_GPIO);
371
372 if (machine_is_nokia_n810()) {
373 gpio_free(N810_EMMC_VSD_GPIO);
374 gpio_free(NN810_EMMC_VIO_GPIO);
375 }
376}
377
378/*
379 * MMC controller1 has two slots that are multiplexed via I2C.
380 * MMC controller2 is not in use.
381 */
382static struct omap_mmc_platform_data mmc1_data = {
383 .nr_slots = 2,
384 .switch_slot = n8x0_mmc_switch_slot,
385 .init = n8x0_mmc_late_init,
386 .cleanup = n8x0_mmc_cleanup,
387 .shutdown = n8x0_mmc_shutdown,
388 .max_freq = 24000000,
389 .dma_mask = 0xffffffff,
390 .slots[0] = {
391 .wires = 4,
392 .set_power = n8x0_mmc_set_power,
393 .set_bus_mode = n8x0_mmc_set_bus_mode,
394 .get_cover_state = n8x0_mmc_get_cover_state,
395 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 |
396 MMC_VDD_32_33 | MMC_VDD_33_34,
397 .name = "internal",
398 },
399 .slots[1] = {
400 .set_power = n8x0_mmc_set_power,
401 .set_bus_mode = n8x0_mmc_set_bus_mode,
402 .get_cover_state = n8x0_mmc_get_cover_state,
403 .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 |
404 MMC_VDD_21_22 | MMC_VDD_22_23 |
405 MMC_VDD_23_24 | MMC_VDD_24_25 |
406 MMC_VDD_27_28 | MMC_VDD_28_29 |
407 MMC_VDD_29_30 | MMC_VDD_30_31 |
408 MMC_VDD_32_33 | MMC_VDD_33_34,
409 .name = "external",
410 },
411};
412
413static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
414
415void __init n8x0_mmc_init(void)
416
417{
418 int err;
419
420 if (machine_is_nokia_n810()) {
421 mmc1_data.slots[0].name = "external";
422
423 /*
424 * Some Samsung Movinand chips do not like open-ended
425 * multi-block reads and fall to braind-dead state
426 * while doing so. Reducing the number of blocks in
427 * the transfer or delays in clock disable do not help
428 */
429 mmc1_data.slots[1].name = "internal";
430 mmc1_data.slots[1].ban_openended = 1;
431 }
432
433 err = gpio_request(N8X0_SLOT_SWITCH_GPIO, "MMC slot switch");
434 if (err)
435 return err;
436
437 gpio_direction_output(N8X0_SLOT_SWITCH_GPIO, 0);
438
439 if (machine_is_nokia_n810()) {
440 err = gpio_request(N810_EMMC_VSD_GPIO, "MMC slot 2 Vddf");
441 if (err) {
442 gpio_free(N8X0_SLOT_SWITCH_GPIO);
443 return err;
444 }
445 gpio_direction_output(N810_EMMC_VSD_GPIO, 0);
446
447 err = gpio_request(NN810_EMMC_VIO_GPIO, "MMC slot 2 Vdd");
448 if (err) {
449 gpio_free(N8X0_SLOT_SWITCH_GPIO);
450 gpio_free(N810_EMMC_VSD_GPIO);
451 return err;
452 }
453 gpio_direction_output(NN810_EMMC_VIO_GPIO, 0);
454 }
455
456 mmc_data[0] = &mmc1_data;
457 omap2_init_mmc(mmc_data, OMAP24XX_NR_MMC);
458}
459#else
460
461void __init n8x0_mmc_init(void)
462{
463}
464
465void n8x0_mmc_slot1_cover_handler(void *arg, int state)
466{
467}
468
469#endif /* CONFIG_MMC_OMAP */
470
471#ifdef CONFIG_MENELAUS
472
473static int n8x0_auto_sleep_regulators(void)
474{
475 u32 val;
476 int ret;
477
478 val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \
479 | EN_VAUX_SLEEP | EN_VIO_SLEEP \
480 | EN_VMEM_SLEEP | EN_DC3_SLEEP \
481 | EN_VC_SLEEP | EN_DC2_SLEEP;
482
483 ret = menelaus_set_regulator_sleep(1, val);
484 if (ret < 0) {
485 printk(KERN_ERR "Could not set regulators to sleep on "
486 "menelaus: %u\n", ret);
487 return ret;
488 }
489 return 0;
490}
491
492static int n8x0_auto_voltage_scale(void)
493{
494 int ret;
495
496 ret = menelaus_set_vcore_hw(1400, 1050);
497 if (ret < 0) {
498 printk(KERN_ERR "Could not set VCORE voltage on "
499 "menelaus: %u\n", ret);
500 return ret;
501 }
502 return 0;
503}
504
505static int n8x0_menelaus_late_init(struct device *dev)
506{
507 int ret;
508
509 ret = n8x0_auto_voltage_scale();
510 if (ret < 0)
511 return ret;
512 ret = n8x0_auto_sleep_regulators();
513 if (ret < 0)
514 return ret;
515 return 0;
516}
517
518static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] = {
519 {
520 I2C_BOARD_INFO("menelaus", 0x72),
521 .irq = INT_24XX_SYS_NIRQ,
522 },
523};
524
525static struct menelaus_platform_data n8x0_menelaus_platform_data = {
526 .late_init = n8x0_menelaus_late_init,
527};
528
529static void __init n8x0_menelaus_init(void)
530{
531 n8x0_i2c_board_info_1[0].platform_data = &n8x0_menelaus_platform_data;
532 omap_register_i2c_bus(1, 400, n8x0_i2c_board_info_1,
533 ARRAY_SIZE(n8x0_i2c_board_info_1));
534}
535
536#else
537static inline void __init n8x0_menelaus_init(void)
538{
539}
540#endif
541
99static void __init n8x0_map_io(void) 542static void __init n8x0_map_io(void)
100{ 543{
101 omap2_set_globals_242x(); 544 omap2_set_globals_242x();
@@ -116,7 +559,9 @@ static void __init n8x0_init_machine(void)
116 ARRAY_SIZE(n800_spi_board_info)); 559 ARRAY_SIZE(n800_spi_board_info));
117 560
118 omap_serial_init(); 561 omap_serial_init();
562 n8x0_menelaus_init();
119 n8x0_onenand_init(); 563 n8x0_onenand_init();
564 n8x0_mmc_init();
120} 565}
121 566
122MACHINE_START(NOKIA_N800, "Nokia N800") 567MACHINE_START(NOKIA_N800, "Nokia N800")
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-25 16:50:41 -0500