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-0-31" , 0, "enable" , GPIO_ACTIVE_HIGH), |
83 | GPIO_LOOKUP("gpio-32-63" , 26, "int" , GPIO_ACTIVE_HIGH), |
84 | { } |
85 | }, |
86 | }; |
87 | |
88 | static void __init n8x0_usb_init(void) |
89 | { |
90 | int ret = 0; |
91 | |
92 | gpiod_add_lookup_table(table: &tusb_gpio_table); |
93 | ret = tusb6010_setup_interface(data: &tusb_data, TUSB6010_REFCLK_19, waitpin: 2, |
94 | TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS, |
95 | TUSB6010_DMACHAN); |
96 | if (ret != 0) |
97 | return; |
98 | |
99 | pr_info("TUSB 6010\n" ); |
100 | |
101 | return; |
102 | } |
103 | #else |
104 | |
105 | static void __init n8x0_usb_init(void) {} |
106 | |
107 | #endif /*CONFIG_USB_MUSB_TUSB6010 */ |
108 | |
109 | |
110 | static struct omap2_mcspi_device_config p54spi_mcspi_config = { |
111 | .turbo_mode = 0, |
112 | }; |
113 | |
114 | static struct spi_board_info n800_spi_board_info[] __initdata = { |
115 | { |
116 | .modalias = "p54spi" , |
117 | .bus_num = 2, |
118 | .chip_select = 0, |
119 | .max_speed_hz = 48000000, |
120 | .controller_data = &p54spi_mcspi_config, |
121 | }, |
122 | }; |
123 | |
124 | #if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP) |
125 | |
126 | /* |
127 | * On both N800 and N810, only the first of the two MMC controllers is in use. |
128 | * The two MMC slots are multiplexed via Menelaus companion chip over I2C. |
129 | * On N800, both slots are powered via Menelaus. On N810, only one of the |
130 | * slots is powered via Menelaus. The N810 EMMC is powered via GPIO. |
131 | * |
132 | * VMMC slot 1 on both N800 and N810 |
133 | * VDCDC3_APE and VMCS2_APE slot 2 on N800 |
134 | * GPIO23 and GPIO9 slot 2 EMMC on N810 |
135 | * |
136 | */ |
137 | static int slot1_cover_open; |
138 | static int slot2_cover_open; |
139 | static struct device *mmc_device; |
140 | |
141 | static struct gpiod_lookup_table nokia800_mmc_gpio_table = { |
142 | .dev_id = "mmci-omap.0" , |
143 | .table = { |
144 | /* Slot switch, GPIO 96 */ |
145 | GPIO_LOOKUP("gpio-96-127" , 0, "switch" , GPIO_ACTIVE_HIGH), |
146 | { } |
147 | }, |
148 | }; |
149 | |
150 | static struct gpiod_lookup_table nokia810_mmc_gpio_table = { |
151 | .dev_id = "mmci-omap.0" , |
152 | .table = { |
153 | /* Slot switch, GPIO 96 */ |
154 | GPIO_LOOKUP("gpio-96-127" , 0, "switch" , GPIO_ACTIVE_HIGH), |
155 | /* Slot index 1, VSD power, GPIO 23 */ |
156 | GPIO_LOOKUP_IDX("gpio-0-31" , 23, "vsd" , 1, GPIO_ACTIVE_HIGH), |
157 | /* Slot index 1, VIO power, GPIO 9 */ |
158 | GPIO_LOOKUP_IDX("gpio-0-31" , 9, "vio" , 1, GPIO_ACTIVE_HIGH), |
159 | { } |
160 | }, |
161 | }; |
162 | |
163 | static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot, |
164 | int power_on, int vdd) |
165 | { |
166 | int mV; |
167 | |
168 | #ifdef CONFIG_MMC_DEBUG |
169 | dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n" , slot + 1, |
170 | power_on ? "on" : "off" , vdd); |
171 | #endif |
172 | if (slot == 0) { |
173 | if (!power_on) |
174 | return menelaus_set_vmmc(0); |
175 | switch (1 << vdd) { |
176 | case MMC_VDD_33_34: |
177 | case MMC_VDD_32_33: |
178 | case MMC_VDD_31_32: |
179 | mV = 3100; |
180 | break; |
181 | case MMC_VDD_30_31: |
182 | mV = 3000; |
183 | break; |
184 | case MMC_VDD_28_29: |
185 | mV = 2800; |
186 | break; |
187 | case MMC_VDD_165_195: |
188 | mV = 1850; |
189 | break; |
190 | default: |
191 | BUG(); |
192 | } |
193 | return menelaus_set_vmmc(mV); |
194 | } else { |
195 | if (!power_on) |
196 | return menelaus_set_vdcdc(3, 0); |
197 | switch (1 << vdd) { |
198 | case MMC_VDD_33_34: |
199 | case MMC_VDD_32_33: |
200 | mV = 3300; |
201 | break; |
202 | case MMC_VDD_30_31: |
203 | case MMC_VDD_29_30: |
204 | mV = 3000; |
205 | break; |
206 | case MMC_VDD_28_29: |
207 | case MMC_VDD_27_28: |
208 | mV = 2800; |
209 | break; |
210 | case MMC_VDD_24_25: |
211 | case MMC_VDD_23_24: |
212 | mV = 2400; |
213 | break; |
214 | case MMC_VDD_22_23: |
215 | case MMC_VDD_21_22: |
216 | mV = 2200; |
217 | break; |
218 | case MMC_VDD_20_21: |
219 | mV = 2000; |
220 | break; |
221 | case MMC_VDD_165_195: |
222 | mV = 1800; |
223 | break; |
224 | default: |
225 | BUG(); |
226 | } |
227 | return menelaus_set_vdcdc(3, mV); |
228 | } |
229 | return 0; |
230 | } |
231 | |
232 | static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on, |
233 | int vdd) |
234 | { |
235 | if (board_is_n800() || slot == 0) |
236 | return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd); |
237 | |
238 | /* The n810 power will be handled by GPIO code in the driver */ |
239 | |
240 | return 0; |
241 | } |
242 | |
243 | static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode) |
244 | { |
245 | int r; |
246 | |
247 | dev_dbg(dev, "Set slot %d bus mode %s\n" , slot + 1, |
248 | bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull" ); |
249 | BUG_ON(slot != 0 && slot != 1); |
250 | slot++; |
251 | switch (bus_mode) { |
252 | case MMC_BUSMODE_OPENDRAIN: |
253 | r = menelaus_set_mmc_opendrain(slot, 1); |
254 | break; |
255 | case MMC_BUSMODE_PUSHPULL: |
256 | r = menelaus_set_mmc_opendrain(slot, 0); |
257 | break; |
258 | default: |
259 | BUG(); |
260 | } |
261 | if (r != 0 && printk_ratelimit()) |
262 | dev_err(dev, "MMC: unable to set bus mode for slot %d\n" , |
263 | slot); |
264 | return r; |
265 | } |
266 | |
267 | static int n8x0_mmc_get_cover_state(struct device *dev, int slot) |
268 | { |
269 | slot++; |
270 | BUG_ON(slot != 1 && slot != 2); |
271 | if (slot == 1) |
272 | return slot1_cover_open; |
273 | else |
274 | return slot2_cover_open; |
275 | } |
276 | |
277 | static void n8x0_mmc_callback(void *data, u8 card_mask) |
278 | { |
279 | #ifdef CONFIG_MMC_OMAP |
280 | int bit, *openp, index; |
281 | |
282 | if (board_is_n800()) { |
283 | bit = 1 << 1; |
284 | openp = &slot2_cover_open; |
285 | index = 1; |
286 | } else { |
287 | bit = 1; |
288 | openp = &slot1_cover_open; |
289 | index = 0; |
290 | } |
291 | |
292 | if (card_mask & bit) |
293 | *openp = 1; |
294 | else |
295 | *openp = 0; |
296 | |
297 | omap_mmc_notify_cover_event(mmc_device, index, *openp); |
298 | #else |
299 | pr_warn("MMC: notify cover event not available\n" ); |
300 | #endif |
301 | } |
302 | |
303 | static int n8x0_mmc_late_init(struct device *dev) |
304 | { |
305 | int r, bit, *openp; |
306 | int vs2sel; |
307 | |
308 | mmc_device = dev; |
309 | |
310 | r = menelaus_set_slot_sel(1); |
311 | if (r < 0) |
312 | return r; |
313 | |
314 | if (board_is_n800()) |
315 | vs2sel = 0; |
316 | else |
317 | vs2sel = 2; |
318 | |
319 | r = menelaus_set_mmc_slot(2, 0, vs2sel, 1); |
320 | if (r < 0) |
321 | return r; |
322 | |
323 | n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */ |
324 | n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16); |
325 | |
326 | r = menelaus_set_mmc_slot(1, 1, 0, 1); |
327 | if (r < 0) |
328 | return r; |
329 | r = menelaus_set_mmc_slot(2, 1, vs2sel, 1); |
330 | if (r < 0) |
331 | return r; |
332 | |
333 | r = menelaus_get_slot_pin_states(); |
334 | if (r < 0) |
335 | return r; |
336 | |
337 | if (board_is_n800()) { |
338 | bit = 1 << 1; |
339 | openp = &slot2_cover_open; |
340 | } else { |
341 | bit = 1; |
342 | openp = &slot1_cover_open; |
343 | slot2_cover_open = 0; |
344 | } |
345 | |
346 | /* All slot pin bits seem to be inversed until first switch change */ |
347 | if (r == 0xf || r == (0xf & ~bit)) |
348 | r = ~r; |
349 | |
350 | if (r & bit) |
351 | *openp = 1; |
352 | else |
353 | *openp = 0; |
354 | |
355 | r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL); |
356 | |
357 | return r; |
358 | } |
359 | |
360 | static void n8x0_mmc_shutdown(struct device *dev) |
361 | { |
362 | int vs2sel; |
363 | |
364 | if (board_is_n800()) |
365 | vs2sel = 0; |
366 | else |
367 | vs2sel = 2; |
368 | |
369 | menelaus_set_mmc_slot(1, 0, 0, 0); |
370 | menelaus_set_mmc_slot(2, 0, vs2sel, 0); |
371 | } |
372 | |
373 | static void n8x0_mmc_cleanup(struct device *dev) |
374 | { |
375 | menelaus_unregister_mmc_callback(); |
376 | } |
377 | |
378 | /* |
379 | * MMC controller1 has two slots that are multiplexed via I2C. |
380 | * MMC controller2 is not in use. |
381 | */ |
382 | static struct omap_mmc_platform_data mmc1_data = { |
383 | .nr_slots = 0, |
384 | .init = n8x0_mmc_late_init, |
385 | .cleanup = n8x0_mmc_cleanup, |
386 | .shutdown = n8x0_mmc_shutdown, |
387 | .max_freq = 24000000, |
388 | .slots[0] = { |
389 | .wires = 4, |
390 | .set_power = n8x0_mmc_set_power, |
391 | .set_bus_mode = n8x0_mmc_set_bus_mode, |
392 | .get_cover_state = n8x0_mmc_get_cover_state, |
393 | .ocr_mask = MMC_VDD_165_195 | MMC_VDD_30_31 | |
394 | MMC_VDD_32_33 | MMC_VDD_33_34, |
395 | .name = "internal" , |
396 | }, |
397 | .slots[1] = { |
398 | .set_power = n8x0_mmc_set_power, |
399 | .set_bus_mode = n8x0_mmc_set_bus_mode, |
400 | .get_cover_state = n8x0_mmc_get_cover_state, |
401 | .ocr_mask = MMC_VDD_165_195 | MMC_VDD_20_21 | |
402 | MMC_VDD_21_22 | MMC_VDD_22_23 | |
403 | MMC_VDD_23_24 | MMC_VDD_24_25 | |
404 | MMC_VDD_27_28 | MMC_VDD_28_29 | |
405 | MMC_VDD_29_30 | MMC_VDD_30_31 | |
406 | MMC_VDD_32_33 | MMC_VDD_33_34, |
407 | .name = "external" , |
408 | }, |
409 | }; |
410 | |
411 | static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC]; |
412 | |
413 | static void __init n8x0_mmc_init(void) |
414 | { |
415 | if (board_is_n810()) { |
416 | mmc1_data.slots[0].name = "external" ; |
417 | |
418 | /* |
419 | * Some Samsung Movinand chips do not like open-ended |
420 | * multi-block reads and fall to braind-dead state |
421 | * while doing so. Reducing the number of blocks in |
422 | * the transfer or delays in clock disable do not help |
423 | */ |
424 | mmc1_data.slots[1].name = "internal" ; |
425 | mmc1_data.slots[1].ban_openended = 1; |
426 | gpiod_add_lookup_table(&nokia810_mmc_gpio_table); |
427 | } else { |
428 | gpiod_add_lookup_table(&nokia800_mmc_gpio_table); |
429 | } |
430 | |
431 | mmc1_data.nr_slots = 2; |
432 | mmc_data[0] = &mmc1_data; |
433 | } |
434 | #else |
435 | static struct omap_mmc_platform_data mmc1_data; |
436 | static void __init n8x0_mmc_init(void) |
437 | { |
438 | } |
439 | #endif /* CONFIG_MMC_OMAP */ |
440 | |
441 | #ifdef CONFIG_MENELAUS |
442 | |
443 | static int n8x0_auto_sleep_regulators(void) |
444 | { |
445 | u32 val; |
446 | int ret; |
447 | |
448 | val = EN_VPLL_SLEEP | EN_VMMC_SLEEP \ |
449 | | EN_VAUX_SLEEP | EN_VIO_SLEEP \ |
450 | | EN_VMEM_SLEEP | EN_DC3_SLEEP \ |
451 | | EN_VC_SLEEP | EN_DC2_SLEEP; |
452 | |
453 | ret = menelaus_set_regulator_sleep(1, val); |
454 | if (ret < 0) { |
455 | pr_err("Could not set regulators to sleep on menelaus: %u\n" , |
456 | ret); |
457 | return ret; |
458 | } |
459 | return 0; |
460 | } |
461 | |
462 | static int n8x0_auto_voltage_scale(void) |
463 | { |
464 | int ret; |
465 | |
466 | ret = menelaus_set_vcore_hw(1400, 1050); |
467 | if (ret < 0) { |
468 | pr_err("Could not set VCORE voltage on menelaus: %u\n" , ret); |
469 | return ret; |
470 | } |
471 | return 0; |
472 | } |
473 | |
474 | static int n8x0_menelaus_late_init(struct device *dev) |
475 | { |
476 | int ret; |
477 | |
478 | ret = n8x0_auto_voltage_scale(); |
479 | if (ret < 0) |
480 | return ret; |
481 | ret = n8x0_auto_sleep_regulators(); |
482 | if (ret < 0) |
483 | return ret; |
484 | return 0; |
485 | } |
486 | |
487 | #else |
488 | static int n8x0_menelaus_late_init(struct device *dev) |
489 | { |
490 | return 0; |
491 | } |
492 | #endif |
493 | |
494 | struct menelaus_platform_data n8x0_menelaus_platform_data = { |
495 | .late_init = n8x0_menelaus_late_init, |
496 | }; |
497 | |
498 | static struct gpiod_lookup_table nokia810_asoc_gpio_table = { |
499 | .dev_id = "soc-audio" , |
500 | .table = { |
501 | GPIO_LOOKUP("gpio-0-15" , 10, "headset" , GPIO_ACTIVE_HIGH), |
502 | GPIO_LOOKUP("gpio-80-111" , 21, "speaker" , GPIO_ACTIVE_HIGH), |
503 | { } |
504 | }, |
505 | }; |
506 | |
507 | static int __init n8x0_late_initcall(void) |
508 | { |
509 | if (!board_caps) |
510 | return -ENODEV; |
511 | |
512 | n8x0_mmc_init(); |
513 | n8x0_usb_init(); |
514 | gpiod_add_lookup_table(table: &nokia810_asoc_gpio_table); |
515 | |
516 | return 0; |
517 | } |
518 | omap_late_initcall(n8x0_late_initcall); |
519 | |
520 | /* |
521 | * Legacy init pdata init for n8x0. Note that we want to follow the |
522 | * I2C bus numbering starting at 0 for device tree like other omaps. |
523 | */ |
524 | void * __init n8x0_legacy_init(void) |
525 | { |
526 | board_check_revision(); |
527 | spi_register_board_info(info: n800_spi_board_info, |
528 | ARRAY_SIZE(n800_spi_board_info)); |
529 | return &mmc1_data; |
530 | } |
531 | |