1 /*
2  * Legacy platform_data quirks
3  *
4  * Copyright (C) 2013 Texas Instruments
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #include <linux/clk.h>
11 #include <linux/davinci_emac.h>
12 #include <linux/gpio.h>
13 #include <linux/init.h>
14 #include <linux/kernel.h>
15 #include <linux/of_platform.h>
16 #include <linux/ti_wilink_st.h>
17 #include <linux/wl12xx.h>
18 #include <linux/mmc/card.h>
19 #include <linux/mmc/host.h>
20 #include <linux/regulator/machine.h>
21 #include <linux/regulator/fixed.h>
22 
23 #include <linux/platform_data/pinctrl-single.h>
24 #include <linux/platform_data/iommu-omap.h>
25 #include <linux/platform_data/wkup_m3.h>
26 
27 #include <asm/siginfo.h>
28 #include <asm/signal.h>
29 
30 #include "common.h"
31 #include "common-board-devices.h"
32 #include "dss-common.h"
33 #include "control.h"
34 #include "omap_device.h"
35 #include "omap-secure.h"
36 #include "soc.h"
37 #include "hsmmc.h"
38 
39 struct pdata_init {
40 	const char *compatible;
41 	void (*fn)(void);
42 };
43 
44 static struct of_dev_auxdata omap_auxdata_lookup[];
45 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
46 
47 #ifdef CONFIG_MACH_NOKIA_N8X0
48 static void __init omap2420_n8x0_legacy_init(void)
49 {
50 	omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
51 }
52 #else
53 #define omap2420_n8x0_legacy_init	NULL
54 #endif
55 
56 #ifdef CONFIG_ARCH_OMAP3
57 /*
58  * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
59  * mode for MMC1 in case bootloader did not configure things.
60  * Note that if the pins are used for MMC1, pbias-regulator
61  * manages the IO voltage.
62  */
63 static void __init omap3_gpio126_127_129(void)
64 {
65 	u32 reg;
66 
67 	reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
68 	reg &= ~OMAP343X_PBIASLITEVMODE1;
69 	reg |= OMAP343X_PBIASLITEPWRDNZ1;
70 	omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
71 	if (cpu_is_omap3630()) {
72 		reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
73 		reg |= OMAP36XX_GPIO_IO_PWRDNZ;
74 		omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
75 	}
76 }
77 
78 static void __init hsmmc2_internal_input_clk(void)
79 {
80 	u32 reg;
81 
82 	reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
83 	reg |= OMAP2_MMCSDIO2ADPCLKISEL;
84 	omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
85 }
86 
87 static struct iommu_platform_data omap3_iommu_pdata = {
88 	.reset_name = "mmu",
89 	.assert_reset = omap_device_assert_hardreset,
90 	.deassert_reset = omap_device_deassert_hardreset,
91 };
92 
93 static int omap3_sbc_t3730_twl_callback(struct device *dev,
94 					   unsigned gpio,
95 					   unsigned ngpio)
96 {
97 	int res;
98 
99 	res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
100 			       "wlan pwr");
101 	if (res)
102 		return res;
103 
104 	gpio_export(gpio, 0);
105 
106 	return 0;
107 }
108 
109 static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
110 {
111 	int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
112 
113 	if (err) {
114 		pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
115 			hub_name, err);
116 		return;
117 	}
118 
119 	gpio_export(gpio, 0);
120 
121 	udelay(10);
122 	gpio_set_value(gpio, 1);
123 	msleep(1);
124 }
125 
126 static void __init omap3_sbc_t3730_twl_init(void)
127 {
128 	twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
129 }
130 
131 static void __init omap3_sbc_t3730_legacy_init(void)
132 {
133 	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
134 }
135 
136 static void __init omap3_sbc_t3530_legacy_init(void)
137 {
138 	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
139 }
140 
141 static struct ti_st_plat_data wilink_pdata = {
142 	.nshutdown_gpio = 137,
143 	.dev_name = "/dev/ttyO1",
144 	.flow_cntrl = 1,
145 	.baud_rate = 300000,
146 };
147 
148 static struct platform_device wl18xx_device = {
149 	.name	= "kim",
150 	.id	= -1,
151 	.dev	= {
152 		.platform_data = &wilink_pdata,
153 	}
154 };
155 
156 static struct platform_device btwilink_device = {
157 	.name	= "btwilink",
158 	.id	= -1,
159 };
160 
161 static void __init omap3_igep0020_rev_f_legacy_init(void)
162 {
163 	platform_device_register(&wl18xx_device);
164 	platform_device_register(&btwilink_device);
165 }
166 
167 static void __init omap3_igep0030_rev_g_legacy_init(void)
168 {
169 	platform_device_register(&wl18xx_device);
170 	platform_device_register(&btwilink_device);
171 }
172 
173 static void __init omap3_evm_legacy_init(void)
174 {
175 	hsmmc2_internal_input_clk();
176 }
177 
178 static void am35xx_enable_emac_int(void)
179 {
180 	u32 v;
181 
182 	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
183 	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
184 	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
185 	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
186 	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
187 }
188 
189 static void am35xx_disable_emac_int(void)
190 {
191 	u32 v;
192 
193 	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
194 	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
195 	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
196 	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
197 }
198 
199 static struct emac_platform_data am35xx_emac_pdata = {
200 	.interrupt_enable	= am35xx_enable_emac_int,
201 	.interrupt_disable	= am35xx_disable_emac_int,
202 };
203 
204 static void __init am35xx_emac_reset(void)
205 {
206 	u32 v;
207 
208 	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
209 	v &= ~AM35XX_CPGMACSS_SW_RST;
210 	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
211 	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
212 }
213 
214 static struct gpio cm_t3517_wlan_gpios[] __initdata = {
215 	{ 56,	GPIOF_OUT_INIT_HIGH,	"wlan pwr" },
216 	{ 4,	GPIOF_OUT_INIT_HIGH,	"xcvr noe" },
217 };
218 
219 static void __init omap3_sbc_t3517_wifi_init(void)
220 {
221 	int err = gpio_request_array(cm_t3517_wlan_gpios,
222 				ARRAY_SIZE(cm_t3517_wlan_gpios));
223 	if (err) {
224 		pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
225 		return;
226 	}
227 
228 	gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
229 	gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
230 
231 	msleep(100);
232 	gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
233 }
234 
235 static void __init omap3_sbc_t3517_legacy_init(void)
236 {
237 	omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
238 	omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
239 	am35xx_emac_reset();
240 	hsmmc2_internal_input_clk();
241 	omap3_sbc_t3517_wifi_init();
242 }
243 
244 static void __init am3517_evm_legacy_init(void)
245 {
246 	am35xx_emac_reset();
247 }
248 
249 static struct platform_device omap3_rom_rng_device = {
250 	.name		= "omap3-rom-rng",
251 	.id		= -1,
252 	.dev	= {
253 		.platform_data	= rx51_secure_rng_call,
254 	},
255 };
256 
257 static void __init nokia_n900_legacy_init(void)
258 {
259 	hsmmc2_internal_input_clk();
260 
261 	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
262 		if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
263 			pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
264 			/* set IBE to 1 */
265 			rx51_secure_update_aux_cr(BIT(6), 0);
266 		} else {
267 			pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
268 			pr_warn("Thumb binaries may crash randomly without this workaround\n");
269 		}
270 
271 		pr_info("RX-51: Registring OMAP3 HWRNG device\n");
272 		platform_device_register(&omap3_rom_rng_device);
273 
274 	}
275 }
276 
277 static void __init omap3_tao3530_legacy_init(void)
278 {
279 	hsmmc2_internal_input_clk();
280 }
281 
282 /* omap3pandora legacy devices */
283 #define PANDORA_WIFI_IRQ_GPIO		21
284 #define PANDORA_WIFI_NRESET_GPIO	23
285 
286 static struct platform_device pandora_backlight = {
287 	.name	= "pandora-backlight",
288 	.id	= -1,
289 };
290 
291 static struct regulator_consumer_supply pandora_vmmc3_supply[] = {
292 	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.2"),
293 };
294 
295 static struct regulator_init_data pandora_vmmc3 = {
296 	.constraints = {
297 		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
298 	},
299 	.num_consumer_supplies	= ARRAY_SIZE(pandora_vmmc3_supply),
300 	.consumer_supplies	= pandora_vmmc3_supply,
301 };
302 
303 static struct fixed_voltage_config pandora_vwlan = {
304 	.supply_name		= "vwlan",
305 	.microvolts		= 1800000, /* 1.8V */
306 	.gpio			= PANDORA_WIFI_NRESET_GPIO,
307 	.startup_delay		= 50000, /* 50ms */
308 	.enable_high		= 1,
309 	.init_data		= &pandora_vmmc3,
310 };
311 
312 static struct platform_device pandora_vwlan_device = {
313 	.name		= "reg-fixed-voltage",
314 	.id		= 1,
315 	.dev = {
316 		.platform_data = &pandora_vwlan,
317 	},
318 };
319 
320 static void pandora_wl1251_init_card(struct mmc_card *card)
321 {
322 	/*
323 	 * We have TI wl1251 attached to MMC3. Pass this information to
324 	 * SDIO core because it can't be probed by normal methods.
325 	 */
326 	if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
327 		card->quirks |= MMC_QUIRK_NONSTD_SDIO;
328 		card->cccr.wide_bus = 1;
329 		card->cis.vendor = 0x104c;
330 		card->cis.device = 0x9066;
331 		card->cis.blksize = 512;
332 		card->cis.max_dtr = 24000000;
333 		card->ocr = 0x80;
334 	}
335 }
336 
337 static struct omap2_hsmmc_info pandora_mmc3[] = {
338 	{
339 		.mmc		= 3,
340 		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
341 		.gpio_cd	= -EINVAL,
342 		.gpio_wp	= -EINVAL,
343 		.init_card	= pandora_wl1251_init_card,
344 	},
345 	{}	/* Terminator */
346 };
347 
348 static void __init pandora_wl1251_init(void)
349 {
350 	struct wl1251_platform_data pandora_wl1251_pdata;
351 	int ret;
352 
353 	memset(&pandora_wl1251_pdata, 0, sizeof(pandora_wl1251_pdata));
354 
355 	pandora_wl1251_pdata.power_gpio = -1;
356 
357 	ret = gpio_request_one(PANDORA_WIFI_IRQ_GPIO, GPIOF_IN, "wl1251 irq");
358 	if (ret < 0)
359 		goto fail;
360 
361 	pandora_wl1251_pdata.irq = gpio_to_irq(PANDORA_WIFI_IRQ_GPIO);
362 	if (pandora_wl1251_pdata.irq < 0)
363 		goto fail_irq;
364 
365 	pandora_wl1251_pdata.use_eeprom = true;
366 	ret = wl1251_set_platform_data(&pandora_wl1251_pdata);
367 	if (ret < 0)
368 		goto fail_irq;
369 
370 	return;
371 
372 fail_irq:
373 	gpio_free(PANDORA_WIFI_IRQ_GPIO);
374 fail:
375 	pr_err("wl1251 board initialisation failed\n");
376 }
377 
378 static void __init omap3_pandora_legacy_init(void)
379 {
380 	platform_device_register(&pandora_backlight);
381 	platform_device_register(&pandora_vwlan_device);
382 	omap_hsmmc_init(pandora_mmc3);
383 	omap_hsmmc_late_init(pandora_mmc3);
384 	pandora_wl1251_init();
385 }
386 #endif /* CONFIG_ARCH_OMAP3 */
387 
388 #ifdef CONFIG_SOC_TI81XX
389 static int fault_fixed_up;
390 
391 static int t410_abort_handler(unsigned long addr, unsigned int fsr,
392 			      struct pt_regs *regs)
393 {
394 	if ((fsr == 0x406 || fsr == 0xc06) && !fault_fixed_up) {
395 		pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
396 			addr, fsr);
397 		fault_fixed_up = 1;
398 		return 0;
399 	}
400 
401 	return 1;
402 }
403 
404 static void __init t410_abort_init(void)
405 {
406 	hook_fault_code(16 + 6, t410_abort_handler, SIGBUS, BUS_OBJERR,
407 			"imprecise external abort");
408 }
409 #endif
410 
411 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
412 static struct iommu_platform_data omap4_iommu_pdata = {
413 	.reset_name = "mmu_cache",
414 	.assert_reset = omap_device_assert_hardreset,
415 	.deassert_reset = omap_device_deassert_hardreset,
416 };
417 #endif
418 
419 #if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
420 static struct wkup_m3_platform_data wkup_m3_data = {
421 	.reset_name = "wkup_m3",
422 	.assert_reset = omap_device_assert_hardreset,
423 	.deassert_reset = omap_device_deassert_hardreset,
424 };
425 #endif
426 
427 #ifdef CONFIG_SOC_OMAP5
428 static void __init omap5_uevm_legacy_init(void)
429 {
430 }
431 #endif
432 
433 static struct pcs_pdata pcs_pdata;
434 
435 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
436 {
437 	pcs_pdata.irq = irq;
438 	pcs_pdata.rearm = rearm;
439 }
440 
441 /*
442  * GPIOs for TWL are initialized by the I2C bus and need custom
443  * handing until DSS has device tree bindings.
444  */
445 void omap_auxdata_legacy_init(struct device *dev)
446 {
447 	if (dev->platform_data)
448 		return;
449 
450 	if (strcmp("twl4030-gpio", dev_name(dev)))
451 		return;
452 
453 	dev->platform_data = &twl_gpio_auxdata;
454 }
455 
456 /*
457  * Few boards still need auxdata populated before we populate
458  * the dev entries in of_platform_populate().
459  */
460 static struct pdata_init auxdata_quirks[] __initdata = {
461 #ifdef CONFIG_SOC_OMAP2420
462 	{ "nokia,n800", omap2420_n8x0_legacy_init, },
463 	{ "nokia,n810", omap2420_n8x0_legacy_init, },
464 	{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
465 #endif
466 #ifdef CONFIG_ARCH_OMAP3
467 	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
468 #endif
469 	{ /* sentinel */ },
470 };
471 
472 static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
473 #ifdef CONFIG_MACH_NOKIA_N8X0
474 	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
475 	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
476 	OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
477 #endif
478 #ifdef CONFIG_ARCH_OMAP3
479 	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
480 	OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
481 	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
482 	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
483 		       &omap3_iommu_pdata),
484 	/* Only on am3517 */
485 	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
486 	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
487 		       &am35xx_emac_pdata),
488 #endif
489 #ifdef CONFIG_SOC_AM33XX
490 	OF_DEV_AUXDATA("ti,am3352-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
491 		       &wkup_m3_data),
492 #endif
493 #ifdef CONFIG_ARCH_OMAP4
494 	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
495 	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
496 #endif
497 #ifdef CONFIG_SOC_OMAP5
498 	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
499 	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
500 #endif
501 #ifdef CONFIG_SOC_DRA7XX
502 	OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
503 #endif
504 #ifdef CONFIG_SOC_AM43XX
505 	OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
506 	OF_DEV_AUXDATA("ti,am4372-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
507 		       &wkup_m3_data),
508 #endif
509 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
510 	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
511 		       &omap4_iommu_pdata),
512 	OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
513 		       &omap4_iommu_pdata),
514 #endif
515 	{ /* sentinel */ },
516 };
517 
518 /*
519  * Few boards still need to initialize some legacy devices with
520  * platform data until the drivers support device tree.
521  */
522 static struct pdata_init pdata_quirks[] __initdata = {
523 #ifdef CONFIG_ARCH_OMAP3
524 	{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
525 	{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
526 	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
527 	{ "nokia,omap3-n900", nokia_n900_legacy_init, },
528 	{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
529 	{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
530 	{ "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
531 	{ "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
532 	{ "logicpd,dm3730-torpedo-devkit", omap3_gpio126_127_129, },
533 	{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
534 	{ "ti,am3517-evm", am3517_evm_legacy_init, },
535 	{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
536 	{ "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, },
537 	{ "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, },
538 #endif
539 #ifdef CONFIG_SOC_TI81XX
540 	{ "hp,t410", t410_abort_init, },
541 #endif
542 #ifdef CONFIG_SOC_OMAP5
543 	{ "ti,omap5-uevm", omap5_uevm_legacy_init, },
544 #endif
545 	{ /* sentinel */ },
546 };
547 
548 static void pdata_quirks_check(struct pdata_init *quirks)
549 {
550 	while (quirks->compatible) {
551 		if (of_machine_is_compatible(quirks->compatible)) {
552 			if (quirks->fn)
553 				quirks->fn();
554 			break;
555 		}
556 		quirks++;
557 	}
558 }
559 
560 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
561 {
562 	omap_sdrc_init(NULL, NULL);
563 	pdata_quirks_check(auxdata_quirks);
564 	of_platform_populate(NULL, omap_dt_match_table,
565 			     omap_auxdata_lookup, NULL);
566 	pdata_quirks_check(pdata_quirks);
567 }
568