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
board_check_revision(void)50 static void board_check_revision(void)
51 {
52 if (of_machine_is_compatible("nokia,n800"))
53 board_caps = NOKIA_N800;
54 else if (of_machine_is_compatible("nokia,n810"))
55 board_caps = NOKIA_N810;
56 else if (of_machine_is_compatible("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
n8x0_usb_init(void)90 static void __init n8x0_usb_init(void)
91 {
92 int ret = 0;
93
94 gpiod_add_lookup_table(&tusb_gpio_table);
95 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 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
n8x0_usb_init(void)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
n8x0_mmc_set_power_menelaus(struct device * dev,int slot,int power_on,int vdd)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
n8x0_mmc_set_power(struct device * dev,int slot,int power_on,int vdd)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
n8x0_mmc_set_bus_mode(struct device * dev,int slot,int bus_mode)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
n8x0_mmc_get_cover_state(struct device * dev,int slot)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
n8x0_mmc_callback(void * data,u8 card_mask)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
n8x0_mmc_late_init(struct device * dev)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
n8x0_mmc_shutdown(struct device * dev)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
n8x0_mmc_cleanup(struct device * dev)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
n8x0_mmc_init(void)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;
n8x0_mmc_init(void)439 static void __init n8x0_mmc_init(void)
440 {
441 }
442 #endif /* CONFIG_MMC_OMAP */
443
444 #ifdef CONFIG_MENELAUS
445
n8x0_auto_sleep_regulators(void)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
n8x0_auto_voltage_scale(void)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
n8x0_menelaus_late_init(struct device * dev)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
n8x0_menelaus_late_init(struct device * dev)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
n8x0_late_initcall(void)501 static int __init n8x0_late_initcall(void)
502 {
503 if (!board_caps)
504 return -ENODEV;
505
506 n8x0_mmc_init();
507 n8x0_usb_init();
508
509 return 0;
510 }
511 omap_late_initcall(n8x0_late_initcall);
512
513 /*
514 * Legacy init pdata init for n8x0. Note that we want to follow the
515 * I2C bus numbering starting at 0 for device tree like other omaps.
516 */
n8x0_legacy_init(void)517 void * __init n8x0_legacy_init(void)
518 {
519 board_check_revision();
520 spi_register_board_info(n800_spi_board_info,
521 ARRAY_SIZE(n800_spi_board_info));
522 return &mmc1_data;
523 }
524
