1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * linux/arch/arm/mach-omap2/board-n8x0.c |
4 | * |
5 | * Copyright (C) 2005-2009 Nokia Corporation |
6 | * Author: Juha Yrjola <juha.yrjola@nokia.com> |
7 | * |
8 | * Modified from mach-omap2/board-generic.c |
9 | */ |
10 | |
11 | #include <linux/clk.h> |
12 | #include <linux/delay.h> |
13 | #include <linux/gpio/machine.h> |
14 | #include <linux/gpio/consumer.h> |
15 | #include <linux/init.h> |
16 | #include <linux/io.h> |
17 | #include <linux/irq.h> |
18 | #include <linux/stddef.h> |
19 | #include <linux/i2c.h> |
20 | #include <linux/spi/spi.h> |
21 | #include <linux/usb/musb.h> |
22 | #include <linux/mmc/host.h> |
23 | #include <linux/platform_data/spi-omap2-mcspi.h> |
24 | #include <linux/platform_data/mmc-omap.h> |
25 | #include <linux/mfd/menelaus.h> |
26 | |
27 | #include <asm/mach/arch.h> |
28 | #include <asm/mach-types.h> |
29 | |
30 | #include "common.h" |
31 | #include "mmc.h" |
32 | #include "usb-tusb6010.h" |
33 | #include "soc.h" |
34 | #include "common-board-devices.h" |
35 | |
36 | #define TUSB6010_ASYNC_CS 1 |
37 | #define TUSB6010_SYNC_CS 4 |
38 | #define TUSB6010_DMACHAN 0x3f |
39 | |
40 | #define NOKIA_N810_WIMAX (1 << 2) |
41 | #define NOKIA_N810 (1 << 1) |
42 | #define NOKIA_N800 (1 << 0) |
43 | |
44 | static u32 board_caps; |
45 | |
46 | #define board_is_n800() (board_caps & NOKIA_N800) |
47 | #define board_is_n810() (board_caps & NOKIA_N810) |
48 | #define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX) |
49 | |
50 | static void board_check_revision(void) |
51 | { |
52 | if (of_machine_is_compatible(compat: "nokia,n800" )) |
53 | board_caps = NOKIA_N800; |
54 | else if (of_machine_is_compatible(compat: "nokia,n810" )) |
55 | board_caps = NOKIA_N810; |
56 | else if (of_machine_is_compatible(compat: "nokia,n810-wimax" )) |
57 | board_caps = NOKIA_N810_WIMAX; |
58 | |
59 | if (!board_caps) |
60 | pr_err("Unknown board\n" ); |
61 | } |
62 | |
63 | #if IS_ENABLED(CONFIG_USB_MUSB_TUSB6010) |
64 | |
65 | static struct musb_hdrc_config musb_config = { |
66 | .multipoint = 1, |
67 | .dyn_fifo = 1, |
68 | .num_eps = 16, |
69 | .ram_bits = 12, |
70 | }; |
71 | |
72 | static struct musb_hdrc_platform_data tusb_data = { |
73 | .mode = MUSB_OTG, |
74 | .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */ |
75 | .power = 100, /* Max 100 mA VBUS for host mode */ |
76 | .config = &musb_config, |
77 | }; |
78 | |
79 | static struct gpiod_lookup_table tusb_gpio_table = { |
80 | .dev_id = "musb-tusb" , |
81 | .table = { |
82 | GPIO_LOOKUP("gpio-0-15" , 0, "enable" , |
83 | GPIO_ACTIVE_HIGH), |
84 | GPIO_LOOKUP("gpio-48-63" , 10, "int" , |
85 | GPIO_ACTIVE_HIGH), |
86 | { } |
87 | }, |
88 | }; |
89 | |
90 | static void __init n8x0_usb_init(void) |
91 | { |
92 | int ret = 0; |
93 | |
94 | gpiod_add_lookup_table(table: &tusb_gpio_table); |
95 | ret = tusb6010_setup_interface(data: &tusb_data, TUSB6010_REFCLK_19, waitpin: 2, |
96 | TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, |
97 | TUSB6010_DMACHAN); |
98 | if (ret != 0) |
99 | return; |
100 | |
101 | pr_info("TUSB 6010\n" ); |
102 | |
103 | return; |
104 | } |
105 | #else |
106 | |
107 | static void __init n8x0_usb_init(void) {} |
108 | |
109 | #endif /*CONFIG_USB_MUSB_TUSB6010 */ |
110 | |
111 | |
112 | static struct omap2_mcspi_device_config p54spi_mcspi_config = { |
113 | .turbo_mode = 0, |
114 | }; |
115 | |
116 | static struct spi_board_info n800_spi_board_info[] __initdata = { |
117 | { |
118 | .modalias = "p54spi" , |
119 | .bus_num = 2, |
120 | .chip_select = 0, |
121 | .max_speed_hz = 48000000, |
122 | .controller_data = &p54spi_mcspi_config, |
123 | }, |
124 | }; |
125 | |
126 | #if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP) |
127 | |
128 | /* |
129 | * On both N800 and N810, only the first of the two MMC controllers is in use. |
130 | * The two MMC slots are multiplexed via Menelaus companion chip over I2C. |
131 | * On N800, both slots are powered via Menelaus. On N810, only one of the |
132 | * slots is powered via Menelaus. The N810 EMMC is powered via GPIO. |
133 | * |
134 | * VMMC slot 1 on both N800 and N810 |
135 | * VDCDC3_APE and VMCS2_APE slot 2 on N800 |
136 | * GPIO23 and GPIO9 slot 2 EMMC on N810 |
137 | * |
138 | */ |
139 | static int slot1_cover_open; |
140 | static int slot2_cover_open; |
141 | static struct device *mmc_device; |
142 | |
143 | static struct gpiod_lookup_table nokia8xx_mmc_gpio_table = { |
144 | .dev_id = "mmci-omap.0" , |
145 | .table = { |
146 | /* Slot switch, GPIO 96 */ |
147 | GPIO_LOOKUP("gpio-80-111" , 16, |
148 | "switch" , GPIO_ACTIVE_HIGH), |
149 | { } |
150 | }, |
151 | }; |
152 | |
153 | static struct gpiod_lookup_table nokia810_mmc_gpio_table = { |
154 | .dev_id = "mmci-omap.0" , |
155 | .table = { |
156 | /* Slot index 1, VSD power, GPIO 23 */ |
157 | GPIO_LOOKUP_IDX("gpio-16-31" , 7, |
158 | "vsd" , 1, GPIO_ACTIVE_HIGH), |
159 | /* Slot index 1, VIO power, GPIO 9 */ |
160 | GPIO_LOOKUP_IDX("gpio-0-15" , 9, |
161 | "vio" , 1, GPIO_ACTIVE_HIGH), |
162 | { } |
163 | }, |
164 | }; |
165 | |
166 | static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot, |
167 | int power_on, int vdd) |
168 | { |
169 | int mV; |
170 | |
171 | #ifdef CONFIG_MMC_DEBUG |
172 | dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n" , slot + 1, |
173 | power_on ? "on" : "off" , vdd); |
174 | #endif |
175 | if (slot == 0) { |
176 | if (!power_on) |
177 | return menelaus_set_vmmc(0); |
178 | switch (1 << vdd) { |
179 | case MMC_VDD_33_34: |
180 | case MMC_VDD_32_33: |
181 | case MMC_VDD_31_32: |
182 | mV = 3100; |
183 | break; |
184 | case MMC_VDD_30_31: |
185 | mV = 3000; |
186 | break; |
187 | case MMC_VDD_28_29: |
188 | mV = 2800; |
189 | break; |
190 | case MMC_VDD_165_195: |
191 | mV = 1850; |
192 | break; |
193 | default: |
194 | BUG(); |
195 | } |
196 | return menelaus_set_vmmc(mV); |
197 | } else { |
198 | if (!power_on) |
199 | return menelaus_set_vdcdc(3, 0); |
200 | switch (1 << vdd) { |
201 | case MMC_VDD_33_34: |
202 | case MMC_VDD_32_33: |
203 | mV = 3300; |
204 | break; |
205 | case MMC_VDD_30_31: |
206 | case MMC_VDD_29_30: |
207 | mV = 3000; |
208 | break; |
209 | case MMC_VDD_28_29: |
210 | case MMC_VDD_27_28: |
211 | mV = 2800; |
212 | break; |
213 | case MMC_VDD_24_25: |
214 | case MMC_VDD_23_24: |
215 | mV = 2400; |
216 | break; |
217 | case MMC_VDD_22_23: |
218 | case MMC_VDD_21_22: |
219 | mV = 2200; |
220 | break; |
221 | case MMC_VDD_20_21: |
222 | mV = 2000; |
223 | break; |
224 | case MMC_VDD_165_195: |
225 | mV = 1800; |
226 | break; |
227 | default: |
228 | BUG(); |
229 | } |
230 | return menelaus_set_vdcdc(3, mV); |
231 | } |
232 | return 0; |
233 | } |
234 | |
235 | static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on, |
236 | int vdd) |
237 | { |
238 | if (board_is_n800() || slot == 0) |
239 | return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd); |
240 | |
241 | /* The n810 power will be handled by GPIO code in the driver */ |
242 | |
243 | return 0; |
244 | } |
245 | |
246 | static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) |
247 | { |
248 | int r; |
249 | |
250 | dev_dbg(dev, "Set slot %d bus mode %s\n" , slot + 1, |
251 | bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull" ); |
252 | BUG_ON(slot != 0 && slot != 1); |
253 | slot++; |
254 | switch (bus_mode) { |
255 | case MMC_BUSMODE_OPENDRAIN: |
256 | r = menelaus_set_mmc_opendrain(slot, 1); |
257 | break; |
258 | case MMC_BUSMODE_PUSHPULL: |
259 | r = menelaus_set_mmc_opendrain(slot, 0); |
260 | break; |
261 | default: |
262 | BUG(); |
263 | } |
264 | if (r != 0 && printk_ratelimit()) |
265 | dev_err(dev, "MMC: unable to set bus mode for slot %d\n" , |
266 | slot); |
267 | return r; |
268 | } |
269 | |
270 | static int n8x0_mmc_get_cover_state(struct device *dev, int slot) |
271 | { |
272 | slot++; |
273 | BUG_ON(slot != 1 && slot != 2); |
274 | if (slot == 1) |
275 | return slot1_cover_open; |
276 | else |
277 | return slot2_cover_open; |
278 | } |
279 | |
280 | static void n8x0_mmc_callback(void *data, u8 card_mask) |
281 | { |
282 | #ifdef CONFIG_MMC_OMAP |
283 | int bit, *openp, index; |
284 | |
285 | if (board_is_n800()) { |
286 | bit = 1 << 1; |
287 | openp = &slot2_cover_open; |
288 | index = 1; |
289 | } else { |
290 | bit = 1; |
291 | openp = &slot1_cover_open; |
292 | index = 0; |
293 | } |
294 | |
295 | if (card_mask & bit) |
296 | *openp = 1; |
297 | else |
298 | *openp = 0; |
299 | |
300 | omap_mmc_notify_cover_event(mmc_device, index, *openp); |
301 | #else |
302 | pr_warn("MMC: notify cover event not available\n" ); |
303 | #endif |
304 | } |
305 | |
306 | static int n8x0_mmc_late_init(struct device *dev) |
307 | { |
308 | int r, bit, *openp; |
309 | int vs2sel; |
310 | |
311 | mmc_device = dev; |
312 | |
313 | r = menelaus_set_slot_sel(1); |
314 | if (r < 0) |
315 | return r; |
316 | |
317 | if (board_is_n800()) |
318 | vs2sel = 0; |
319 | else |
320 | vs2sel = 2; |
321 | |
322 | r = menelaus_set_mmc_slot(2, 0, vs2sel, 1); |
323 | if (r < 0) |
324 | return r; |
325 | |
326 | n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */ |
327 | n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16); |
328 | |
329 | r = menelaus_set_mmc_slot(1, 1, 0, 1); |
330 | if (r < 0) |
331 | return r; |
332 | r = menelaus_set_mmc_slot(2, 1, vs2sel, 1); |
333 | if (r < 0) |
334 | return r; |
335 | |
336 | r = menelaus_get_slot_pin_states(); |
337 | if (r < 0) |
338 | return r; |
339 | |
340 | if (board_is_n800()) { |
341 | bit = 1 << 1; |
342 | openp = &slot2_cover_open; |
343 | } else { |
344 | bit = 1; |
345 | openp = &slot1_cover_open; |
346 | slot2_cover_open = 0; |
347 | } |
348 | |
349 | /* All slot pin bits seem to be inversed until first switch change */ |
350 | if (r == 0xf || r == (0xf & ~bit)) |
351 | r = ~r; |
352 | |
353 | if (r & bit) |
354 | *openp = 1; |
355 | else |
356 | *openp = 0; |
357 | |
358 | r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL); |
359 | |
360 | return r; |
361 | } |
362 | |
363 | static void n8x0_mmc_shutdown(struct device *dev) |
364 | { |
365 | int vs2sel; |
366 | |
367 | if (board_is_n800()) |
368 | vs2sel = 0; |
369 | else |
370 | vs2sel = 2; |
371 | |
372 | menelaus_set_mmc_slot(1, 0, 0, 0); |
373 | menelaus_set_mmc_slot(2, 0, vs2sel, 0); |
374 | } |
375 | |
376 | static void n8x0_mmc_cleanup(struct device *dev) |
377 | { |
378 | menelaus_unregister_mmc_callback(); |
379 | } |
380 | |
381 | /* |
382 | * MMC controller1 has two slots that are multiplexed via I2C. |
383 | * MMC controller2 is not in use. |
384 | */ |
385 | static struct omap_mmc_platform_data mmc1_data = { |
386 | .nr_slots = 0, |
387 | .init = n8x0_mmc_late_init, |
388 | .cleanup = n8x0_mmc_cleanup, |
389 | .shutdown = n8x0_mmc_shutdown, |
390 | .max_freq = 24000000, |
391 | .slots[0] = { |
392 | .wires = 4, |
393 | .set_power = n8x0_mmc_set_power, |
394 | .set_bus_mode = n8x0_mmc_set_bus_mode, |
395 | .get_cover_state = n8x0_mmc_get_cover_state, |
396 | .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 | |
397 | MMC_VDD_32_33 | MMC_VDD_33_34, |
398 | .name = "internal" , |
399 | }, |
400 | .slots[1] = { |
401 | .set_power = n8x0_mmc_set_power, |
402 | .set_bus_mode = n8x0_mmc_set_bus_mode, |
403 | .get_cover_state = n8x0_mmc_get_cover_state, |
404 | .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 | |
405 | MMC_VDD_21_22 | MMC_VDD_22_23 | |
406 | MMC_VDD_23_24 | MMC_VDD_24_25 | |
407 | MMC_VDD_27_28 | MMC_VDD_28_29 | |
408 | MMC_VDD_29_30 | MMC_VDD_30_31 | |
409 | MMC_VDD_32_33 | MMC_VDD_33_34, |
410 | .name = "external" , |
411 | }, |
412 | }; |
413 | |
414 | static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC]; |
415 | |
416 | static void __init n8x0_mmc_init(void) |
417 | { |
418 | gpiod_add_lookup_table(&nokia8xx_mmc_gpio_table); |
419 | |
420 | if (board_is_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 | gpiod_add_lookup_table(&nokia810_mmc_gpio_table); |
432 | } |
433 | |
434 | mmc1_data.nr_slots = 2; |
435 | mmc_data[0] = &mmc1_data; |
436 | } |
437 | #else |
438 | static struct omap_mmc_platform_data mmc1_data; |
439 | static void __init n8x0_mmc_init(void) |
440 | { |
441 | } |
442 | #endif /* CONFIG_MMC_OMAP */ |
443 | |
444 | #ifdef CONFIG_MENELAUS |
445 | |
446 | static int n8x0_auto_sleep_regulators(void) |
447 | { |
448 | u32 val; |
449 | int ret; |
450 | |
451 | val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \ |
452 | | EN_VAUX_SLEEP | EN_VIO_SLEEP \ |
453 | | EN_VMEM_SLEEP | EN_DC3_SLEEP \ |
454 | | EN_VC_SLEEP | EN_DC2_SLEEP; |
455 | |
456 | ret = menelaus_set_regulator_sleep(1, val); |
457 | if (ret < 0) { |
458 | pr_err("Could not set regulators to sleep on menelaus: %u\n" , |
459 | ret); |
460 | return ret; |
461 | } |
462 | return 0; |
463 | } |
464 | |
465 | static int n8x0_auto_voltage_scale(void) |
466 | { |
467 | int ret; |
468 | |
469 | ret = menelaus_set_vcore_hw(1400, 1050); |
470 | if (ret < 0) { |
471 | pr_err("Could not set VCORE voltage on menelaus: %u\n" , ret); |
472 | return ret; |
473 | } |
474 | return 0; |
475 | } |
476 | |
477 | static int n8x0_menelaus_late_init(struct device *dev) |
478 | { |
479 | int ret; |
480 | |
481 | ret = n8x0_auto_voltage_scale(); |
482 | if (ret < 0) |
483 | return ret; |
484 | ret = n8x0_auto_sleep_regulators(); |
485 | if (ret < 0) |
486 | return ret; |
487 | return 0; |
488 | } |
489 | |
490 | #else |
491 | static int n8x0_menelaus_late_init(struct device *dev) |
492 | { |
493 | return 0; |
494 | } |
495 | #endif |
496 | |
497 | struct menelaus_platform_data n8x0_menelaus_platform_data = { |
498 | .late_init = n8x0_menelaus_late_init, |
499 | }; |
500 | |
501 | static struct gpiod_lookup_table nokia810_asoc_gpio_table = { |
502 | .dev_id = "soc-audio" , |
503 | .table = { |
504 | GPIO_LOOKUP("gpio-0-15" , 10, "headset" , GPIO_ACTIVE_HIGH), |
505 | GPIO_LOOKUP("gpio-80-111" , 21, "speaker" , GPIO_ACTIVE_HIGH), |
506 | { } |
507 | }, |
508 | }; |
509 | |
510 | static int __init n8x0_late_initcall(void) |
511 | { |
512 | if (!board_caps) |
513 | return -ENODEV; |
514 | |
515 | n8x0_mmc_init(); |
516 | n8x0_usb_init(); |
517 | gpiod_add_lookup_table(table: &nokia810_asoc_gpio_table); |
518 | |
519 | return 0; |
520 | } |
521 | omap_late_initcall(n8x0_late_initcall); |
522 | |
523 | /* |
524 | * Legacy init pdata init for n8x0. Note that we want to follow the |
525 | * I2C bus numbering starting at 0 for device tree like other omaps. |
526 | */ |
527 | void * __init n8x0_legacy_init(void) |
528 | { |
529 | board_check_revision(); |
530 | spi_register_board_info(info: n800_spi_board_info, |
531 | ARRAY_SIZE(n800_spi_board_info)); |
532 | return &mmc1_data; |
533 | } |
534 | |