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#include <linux/platform_data/pwm_omap_dmtimer.h>
 27#include <plat/dmtimer.h>
 28
 29#include "common.h"
 30#include "common-board-devices.h"
 31#include "dss-common.h"
 32#include "control.h"
 33#include "omap_device.h"
 34#include "omap-secure.h"
 35#include "soc.h"
 36#include "hsmmc.h"
 37
 38struct pdata_init {
 39	const char *compatible;
 40	void (*fn)(void);
 41};
 42
 43static struct of_dev_auxdata omap_auxdata_lookup[];
 44static struct twl4030_gpio_platform_data twl_gpio_auxdata;
 45
 46#ifdef CONFIG_MACH_NOKIA_N8X0
 47static void __init omap2420_n8x0_legacy_init(void)
 48{
 49	omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
 50}
 51#else
 52#define omap2420_n8x0_legacy_init	NULL
 53#endif
 54
 55#ifdef CONFIG_ARCH_OMAP3
 56/*
 57 * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
 58 * mode for MMC1 in case bootloader did not configure things.
 59 * Note that if the pins are used for MMC1, pbias-regulator
 60 * manages the IO voltage.
 61 */
 62static void __init omap3_gpio126_127_129(void)
 63{
 64	u32 reg;
 65
 66	reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
 67	reg &= ~OMAP343X_PBIASLITEVMODE1;
 68	reg |= OMAP343X_PBIASLITEPWRDNZ1;
 69	omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
 70	if (cpu_is_omap3630()) {
 71		reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
 72		reg |= OMAP36XX_GPIO_IO_PWRDNZ;
 73		omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
 74	}
 75}
 76
 77static void __init hsmmc2_internal_input_clk(void)
 78{
 79	u32 reg;
 80
 81	reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
 82	reg |= OMAP2_MMCSDIO2ADPCLKISEL;
 83	omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
 84}
 85
 86static struct iommu_platform_data omap3_iommu_pdata = {
 87	.reset_name = "mmu",
 88	.assert_reset = omap_device_assert_hardreset,
 89	.deassert_reset = omap_device_deassert_hardreset,
 90};
 91
 92static int omap3_sbc_t3730_twl_callback(struct device *dev,
 93					   unsigned gpio,
 94					   unsigned ngpio)
 95{
 96	int res;
 97
 98	res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
 99			       "wlan pwr");
100	if (res)
101		return res;
102
103	gpio_export(gpio, 0);
104
105	return 0;
106}
107
108static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
109{
110	int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
111
112	if (err) {
113		pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
114			hub_name, err);
115		return;
116	}
117
118	gpio_export(gpio, 0);
119
120	udelay(10);
121	gpio_set_value(gpio, 1);
122	msleep(1);
123}
124
125static void __init omap3_sbc_t3730_twl_init(void)
126{
127	twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
128}
129
130static void __init omap3_sbc_t3730_legacy_init(void)
131{
132	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
133}
134
135static void __init omap3_sbc_t3530_legacy_init(void)
136{
137	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
138}
139
140static struct ti_st_plat_data wilink_pdata = {
141	.nshutdown_gpio = 137,
142	.dev_name = "/dev/ttyO1",
143	.flow_cntrl = 1,
144	.baud_rate = 300000,
145};
146
147static struct platform_device wl18xx_device = {
148	.name	= "kim",
149	.id	= -1,
150	.dev	= {
151		.platform_data = &wilink_pdata,
152	}
153};
154
155static struct ti_st_plat_data wilink7_pdata = {
156	.nshutdown_gpio = 162,
157	.dev_name = "/dev/ttyO1",
158	.flow_cntrl = 1,
159	.baud_rate = 300000,
160};
161
162static struct platform_device wl128x_device = {
163	.name	= "kim",
164	.id	= -1,
165	.dev	= {
166		.platform_data = &wilink7_pdata,
167	}
168};
169
170static struct platform_device btwilink_device = {
171	.name	= "btwilink",
172	.id	= -1,
173};
174
175static void __init omap3_igep0020_rev_f_legacy_init(void)
176{
177	platform_device_register(&wl18xx_device);
178	platform_device_register(&btwilink_device);
179}
180
181static void __init omap3_igep0030_rev_g_legacy_init(void)
182{
183	platform_device_register(&wl18xx_device);
184	platform_device_register(&btwilink_device);
185}
186
187static void __init omap3_evm_legacy_init(void)
188{
189	hsmmc2_internal_input_clk();
190}
191
192static void am35xx_enable_emac_int(void)
193{
194	u32 v;
195
196	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
197	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
198	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
199	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
200	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
201}
202
203static void am35xx_disable_emac_int(void)
204{
205	u32 v;
206
207	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
208	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
209	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
210	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
211}
212
213static struct emac_platform_data am35xx_emac_pdata = {
214	.interrupt_enable	= am35xx_enable_emac_int,
215	.interrupt_disable	= am35xx_disable_emac_int,
216};
217
218static void __init am35xx_emac_reset(void)
219{
220	u32 v;
221
222	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
223	v &= ~AM35XX_CPGMACSS_SW_RST;
224	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
225	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
226}
227
228static struct gpio cm_t3517_wlan_gpios[] __initdata = {
229	{ 56,	GPIOF_OUT_INIT_HIGH,	"wlan pwr" },
230	{ 4,	GPIOF_OUT_INIT_HIGH,	"xcvr noe" },
231};
232
233static void __init omap3_sbc_t3517_wifi_init(void)
234{
235	int err = gpio_request_array(cm_t3517_wlan_gpios,
236				ARRAY_SIZE(cm_t3517_wlan_gpios));
237	if (err) {
238		pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
239		return;
240	}
241
242	gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
243	gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
244
245	msleep(100);
246	gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
247}
248
249static void __init omap3_sbc_t3517_legacy_init(void)
250{
251	omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
252	omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
253	am35xx_emac_reset();
254	hsmmc2_internal_input_clk();
255	omap3_sbc_t3517_wifi_init();
256}
257
258static void __init am3517_evm_legacy_init(void)
259{
260	am35xx_emac_reset();
261}
262
263static struct platform_device omap3_rom_rng_device = {
264	.name		= "omap3-rom-rng",
265	.id		= -1,
266	.dev	= {
267		.platform_data	= rx51_secure_rng_call,
268	},
269};
270
271static void __init nokia_n900_legacy_init(void)
272{
273	hsmmc2_internal_input_clk();
274
275	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
276		if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
277			pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
278			/* set IBE to 1 */
279			rx51_secure_update_aux_cr(BIT(6), 0);
280		} else {
281			pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
282			pr_warn("Thumb binaries may crash randomly without this workaround\n");
283		}
284
285		pr_info("RX-51: Registering OMAP3 HWRNG device\n");
286		platform_device_register(&omap3_rom_rng_device);
287
288	}
289}
290
291static void __init omap3_tao3530_legacy_init(void)
292{
293	hsmmc2_internal_input_clk();
294}
295
296static void __init omap3_logicpd_torpedo_init(void)
297{
298	omap3_gpio126_127_129();
299	platform_device_register(&wl128x_device);
300	platform_device_register(&btwilink_device);
301}
302
303/* omap3pandora legacy devices */
304#define PANDORA_WIFI_IRQ_GPIO		21
305#define PANDORA_WIFI_NRESET_GPIO	23
306
307static struct platform_device pandora_backlight = {
308	.name	= "pandora-backlight",
309	.id	= -1,
310};
311
312static struct regulator_consumer_supply pandora_vmmc3_supply[] = {
313	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.2"),
314};
315
316static struct regulator_init_data pandora_vmmc3 = {
317	.constraints = {
318		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
319	},
320	.num_consumer_supplies	= ARRAY_SIZE(pandora_vmmc3_supply),
321	.consumer_supplies	= pandora_vmmc3_supply,
322};
323
324static struct fixed_voltage_config pandora_vwlan = {
325	.supply_name		= "vwlan",
326	.microvolts		= 1800000, /* 1.8V */
327	.gpio			= PANDORA_WIFI_NRESET_GPIO,
328	.startup_delay		= 50000, /* 50ms */
329	.enable_high		= 1,
330	.init_data		= &pandora_vmmc3,
331};
332
333static struct platform_device pandora_vwlan_device = {
334	.name		= "reg-fixed-voltage",
335	.id		= 1,
336	.dev = {
337		.platform_data = &pandora_vwlan,
338	},
339};
340
341static void pandora_wl1251_init_card(struct mmc_card *card)
342{
343	/*
344	 * We have TI wl1251 attached to MMC3. Pass this information to
345	 * SDIO core because it can't be probed by normal methods.
346	 */
347	if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
348		card->quirks |= MMC_QUIRK_NONSTD_SDIO;
349		card->cccr.wide_bus = 1;
350		card->cis.vendor = 0x104c;
351		card->cis.device = 0x9066;
352		card->cis.blksize = 512;
353		card->cis.max_dtr = 24000000;
354		card->ocr = 0x80;
355	}
356}
357
358static struct omap2_hsmmc_info pandora_mmc3[] = {
359	{
360		.mmc		= 3,
361		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
362		.gpio_cd	= -EINVAL,
363		.gpio_wp	= -EINVAL,
364		.init_card	= pandora_wl1251_init_card,
365	},
366	{}	/* Terminator */
367};
368
369static void __init pandora_wl1251_init(void)
370{
371	struct wl1251_platform_data pandora_wl1251_pdata;
372	int ret;
373
374	memset(&pandora_wl1251_pdata, 0, sizeof(pandora_wl1251_pdata));
375
376	pandora_wl1251_pdata.power_gpio = -1;
377
378	ret = gpio_request_one(PANDORA_WIFI_IRQ_GPIO, GPIOF_IN, "wl1251 irq");
379	if (ret < 0)
380		goto fail;
381
382	pandora_wl1251_pdata.irq = gpio_to_irq(PANDORA_WIFI_IRQ_GPIO);
383	if (pandora_wl1251_pdata.irq < 0)
384		goto fail_irq;
385
386	pandora_wl1251_pdata.use_eeprom = true;
387	ret = wl1251_set_platform_data(&pandora_wl1251_pdata);
388	if (ret < 0)
389		goto fail_irq;
390
391	return;
392
393fail_irq:
394	gpio_free(PANDORA_WIFI_IRQ_GPIO);
395fail:
396	pr_err("wl1251 board initialisation failed\n");
397}
398
399static void __init omap3_pandora_legacy_init(void)
400{
401	platform_device_register(&pandora_backlight);
402	platform_device_register(&pandora_vwlan_device);
403	omap_hsmmc_init(pandora_mmc3);
404	omap_hsmmc_late_init(pandora_mmc3);
405	pandora_wl1251_init();
406}
407#endif /* CONFIG_ARCH_OMAP3 */
408
409#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
410static struct iommu_platform_data omap4_iommu_pdata = {
411	.reset_name = "mmu_cache",
412	.assert_reset = omap_device_assert_hardreset,
413	.deassert_reset = omap_device_deassert_hardreset,
414};
415#endif
416
417#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
418static struct wkup_m3_platform_data wkup_m3_data = {
419	.reset_name = "wkup_m3",
420	.assert_reset = omap_device_assert_hardreset,
421	.deassert_reset = omap_device_deassert_hardreset,
422};
423#endif
424
425#ifdef CONFIG_SOC_OMAP5
426static void __init omap5_uevm_legacy_init(void)
427{
428}
429#endif
430
431static struct pcs_pdata pcs_pdata;
432
433void omap_pcs_legacy_init(int irq, void (*rearm)(void))
434{
435	pcs_pdata.irq = irq;
436	pcs_pdata.rearm = rearm;
437}
438
439/*
440 * GPIOs for TWL are initialized by the I2C bus and need custom
441 * handing until DSS has device tree bindings.
442 */
443void omap_auxdata_legacy_init(struct device *dev)
444{
445	if (dev->platform_data)
446		return;
447
448	if (strcmp("twl4030-gpio", dev_name(dev)))
449		return;
450
451	dev->platform_data = &twl_gpio_auxdata;
452}
453
454/* Dual mode timer PWM callbacks platdata */
455#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
456struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
457	.request_by_node = omap_dm_timer_request_by_node,
458	.free = omap_dm_timer_free,
459	.enable = omap_dm_timer_enable,
460	.disable = omap_dm_timer_disable,
461	.get_fclk = omap_dm_timer_get_fclk,
462	.start = omap_dm_timer_start,
463	.stop = omap_dm_timer_stop,
464	.set_load = omap_dm_timer_set_load,
465	.set_match = omap_dm_timer_set_match,
466	.set_pwm = omap_dm_timer_set_pwm,
467	.set_prescaler = omap_dm_timer_set_prescaler,
468	.write_counter = omap_dm_timer_write_counter,
469};
470#endif
471
472/*
473 * Few boards still need auxdata populated before we populate
474 * the dev entries in of_platform_populate().
475 */
476static struct pdata_init auxdata_quirks[] __initdata = {
477#ifdef CONFIG_SOC_OMAP2420
478	{ "nokia,n800", omap2420_n8x0_legacy_init, },
479	{ "nokia,n810", omap2420_n8x0_legacy_init, },
480	{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
481#endif
482#ifdef CONFIG_ARCH_OMAP3
483	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
484#endif
485	{ /* sentinel */ },
486};
487
488static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
489#ifdef CONFIG_MACH_NOKIA_N8X0
490	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
491	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
492	OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
493#endif
494#ifdef CONFIG_ARCH_OMAP3
495	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
496	OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
497	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
498	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
499		       &omap3_iommu_pdata),
500	/* Only on am3517 */
501	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
502	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
503		       &am35xx_emac_pdata),
504#endif
505#ifdef CONFIG_SOC_AM33XX
506	OF_DEV_AUXDATA("ti,am3352-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
507		       &wkup_m3_data),
508#endif
509#ifdef CONFIG_ARCH_OMAP4
510	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
511	OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
512#endif
513#ifdef CONFIG_SOC_OMAP5
514	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
515	OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
516#endif
517#ifdef CONFIG_SOC_DRA7XX
518	OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
519#endif
520#ifdef CONFIG_SOC_AM43XX
521	OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
522	OF_DEV_AUXDATA("ti,am4372-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
523		       &wkup_m3_data),
524#endif
525#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
526	OF_DEV_AUXDATA("ti,omap-dmtimer-pwm", 0, NULL, &pwm_dmtimer_pdata),
527#endif
528#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
529	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
530		       &omap4_iommu_pdata),
531	OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
532		       &omap4_iommu_pdata),
533#endif
534	{ /* sentinel */ },
535};
536
537/*
538 * Few boards still need to initialize some legacy devices with
539 * platform data until the drivers support device tree.
540 */
541static struct pdata_init pdata_quirks[] __initdata = {
542#ifdef CONFIG_ARCH_OMAP3
543	{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
544	{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
545	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
546	{ "nokia,omap3-n900", nokia_n900_legacy_init, },
547	{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
548	{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
549	{ "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
550	{ "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
551	{ "logicpd,dm3730-torpedo-devkit", omap3_logicpd_torpedo_init, },
552	{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
553	{ "ti,am3517-evm", am3517_evm_legacy_init, },
554	{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
555	{ "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, },
556	{ "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, },
557#endif
558#ifdef CONFIG_SOC_OMAP5
559	{ "ti,omap5-uevm", omap5_uevm_legacy_init, },
560#endif
561	{ /* sentinel */ },
562};
563
564static void pdata_quirks_check(struct pdata_init *quirks)
565{
566	while (quirks->compatible) {
567		if (of_machine_is_compatible(quirks->compatible)) {
568			if (quirks->fn)
569				quirks->fn();
570			break;
571		}
572		quirks++;
573	}
574}
575
576void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
577{
578	/*
579	 * We still need this for omap2420 and omap3 PM to work, others are
580	 * using drivers/misc/sram.c already.
581	 */
582	if (of_machine_is_compatible("ti,omap2420") ||
583	    of_machine_is_compatible("ti,omap3"))
584		omap_sdrc_init(NULL, NULL);
585
586	pdata_quirks_check(auxdata_quirks);
587	of_platform_populate(NULL, omap_dt_match_table,
588			     omap_auxdata_lookup, NULL);
589	pdata_quirks_check(pdata_quirks);
590}