1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Legacy platform_data quirks
4  *
5  * Copyright (C) 2013 Texas Instruments
6  */
7 #include <linux/clk.h>
8 #include <linux/davinci_emac.h>
9 #include <linux/gpio.h>
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/of_platform.h>
13 #include <linux/mmc/card.h>
14 #include <linux/mmc/host.h>
15 #include <linux/power/smartreflex.h>
16 #include <linux/regulator/machine.h>
17 #include <linux/regulator/fixed.h>
18 
19 #include <linux/platform_data/pinctrl-single.h>
20 #include <linux/platform_data/hsmmc-omap.h>
21 #include <linux/platform_data/iommu-omap.h>
22 #include <linux/platform_data/ti-sysc.h>
23 #include <linux/platform_data/wkup_m3.h>
24 #include <linux/platform_data/asoc-ti-mcbsp.h>
25 #include <linux/platform_data/ti-prm.h>
26 
27 #include "clockdomain.h"
28 #include "common.h"
29 #include "common-board-devices.h"
30 #include "control.h"
31 #include "omap_device.h"
32 #include "omap-secure.h"
33 #include "soc.h"
34 
35 static struct omap_hsmmc_platform_data __maybe_unused mmc_pdata[2];
36 
37 struct pdata_init {
38 	const char *compatible;
39 	void (*fn)(void);
40 };
41 
42 static struct of_dev_auxdata omap_auxdata_lookup[];
43 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
44 
45 #ifdef CONFIG_MACH_NOKIA_N8X0
46 static void __init omap2420_n8x0_legacy_init(void)
47 {
48 	omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
49 }
50 #else
51 #define omap2420_n8x0_legacy_init	NULL
52 #endif
53 
54 #ifdef CONFIG_ARCH_OMAP3
55 /*
56  * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
57  * mode for MMC1 in case bootloader did not configure things.
58  * Note that if the pins are used for MMC1, pbias-regulator
59  * manages the IO voltage.
60  */
61 static void __init omap3_gpio126_127_129(void)
62 {
63 	u32 reg;
64 
65 	reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
66 	reg &= ~OMAP343X_PBIASLITEVMODE1;
67 	reg |= OMAP343X_PBIASLITEPWRDNZ1;
68 	omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
69 	if (cpu_is_omap3630()) {
70 		reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
71 		reg |= OMAP36XX_GPIO_IO_PWRDNZ;
72 		omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
73 	}
74 }
75 
76 static void __init hsmmc2_internal_input_clk(void)
77 {
78 	u32 reg;
79 
80 	reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
81 	reg |= OMAP2_MMCSDIO2ADPCLKISEL;
82 	omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
83 }
84 
85 #ifdef CONFIG_OMAP_HWMOD
86 static 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 	.device_enable = omap_device_enable,
91 	.device_idle = omap_device_idle,
92 };
93 
94 static struct iommu_platform_data omap3_iommu_isp_pdata = {
95 	.device_enable = omap_device_enable,
96 	.device_idle = omap_device_idle,
97 };
98 #endif
99 
100 static int omap3_sbc_t3730_twl_callback(struct device *dev,
101 					   unsigned gpio,
102 					   unsigned ngpio)
103 {
104 	int res;
105 
106 	res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
107 			       "wlan pwr");
108 	if (res)
109 		return res;
110 
111 	gpio_export(gpio, 0);
112 
113 	return 0;
114 }
115 
116 static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
117 {
118 	int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
119 
120 	if (err) {
121 		pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
122 			hub_name, err);
123 		return;
124 	}
125 
126 	gpio_export(gpio, 0);
127 
128 	udelay(10);
129 	gpio_set_value(gpio, 1);
130 	msleep(1);
131 }
132 
133 static void __init omap3_sbc_t3730_twl_init(void)
134 {
135 	twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
136 }
137 
138 static void __init omap3_sbc_t3730_legacy_init(void)
139 {
140 	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
141 }
142 
143 static void __init omap3_sbc_t3530_legacy_init(void)
144 {
145 	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
146 }
147 
148 static void __init omap3_evm_legacy_init(void)
149 {
150 	hsmmc2_internal_input_clk();
151 }
152 
153 static void am35xx_enable_emac_int(void)
154 {
155 	u32 v;
156 
157 	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
158 	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
159 	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
160 	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
161 	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
162 }
163 
164 static void am35xx_disable_emac_int(void)
165 {
166 	u32 v;
167 
168 	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
169 	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
170 	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
171 	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
172 }
173 
174 static struct emac_platform_data am35xx_emac_pdata = {
175 	.interrupt_enable	= am35xx_enable_emac_int,
176 	.interrupt_disable	= am35xx_disable_emac_int,
177 };
178 
179 static void __init am35xx_emac_reset(void)
180 {
181 	u32 v;
182 
183 	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
184 	v &= ~AM35XX_CPGMACSS_SW_RST;
185 	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
186 	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
187 }
188 
189 static struct gpio cm_t3517_wlan_gpios[] __initdata = {
190 	{ 56,	GPIOF_OUT_INIT_HIGH,	"wlan pwr" },
191 	{ 4,	GPIOF_OUT_INIT_HIGH,	"xcvr noe" },
192 };
193 
194 static void __init omap3_sbc_t3517_wifi_init(void)
195 {
196 	int err = gpio_request_array(cm_t3517_wlan_gpios,
197 				ARRAY_SIZE(cm_t3517_wlan_gpios));
198 	if (err) {
199 		pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
200 		return;
201 	}
202 
203 	gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
204 	gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
205 
206 	msleep(100);
207 	gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
208 }
209 
210 static void __init omap3_sbc_t3517_legacy_init(void)
211 {
212 	omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
213 	omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
214 	am35xx_emac_reset();
215 	hsmmc2_internal_input_clk();
216 	omap3_sbc_t3517_wifi_init();
217 }
218 
219 static void __init am3517_evm_legacy_init(void)
220 {
221 	am35xx_emac_reset();
222 }
223 
224 static void __init nokia_n900_legacy_init(void)
225 {
226 	hsmmc2_internal_input_clk();
227 	mmc_pdata[0].name = "external";
228 	mmc_pdata[1].name = "internal";
229 
230 	if (omap_type() != OMAP2_DEVICE_TYPE_GP) {
231 		if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
232 			pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
233 			/* set IBE to 1 */
234 			rx51_secure_update_aux_cr(BIT(6), 0);
235 		} else {
236 			pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
237 			pr_warn("Thumb binaries may crash randomly without this workaround\n");
238 		}
239 	}
240 }
241 
242 static void __init omap3_tao3530_legacy_init(void)
243 {
244 	hsmmc2_internal_input_clk();
245 }
246 
247 static void __init omap3_logicpd_torpedo_init(void)
248 {
249 	omap3_gpio126_127_129();
250 }
251 
252 /* omap3pandora legacy devices */
253 
254 static struct platform_device pandora_backlight = {
255 	.name	= "pandora-backlight",
256 	.id	= -1,
257 };
258 
259 static void __init omap3_pandora_legacy_init(void)
260 {
261 	platform_device_register(&pandora_backlight);
262 }
263 #endif /* CONFIG_ARCH_OMAP3 */
264 
265 #ifdef CONFIG_SOC_DRA7XX
266 static struct iommu_platform_data dra7_ipu1_dsp_iommu_pdata = {
267 	.set_pwrdm_constraint = omap_iommu_set_pwrdm_constraint,
268 };
269 #endif
270 
271 static struct clockdomain *ti_sysc_find_one_clockdomain(struct clk *clk)
272 {
273 	struct clk_hw *hw = __clk_get_hw(clk);
274 	struct clockdomain *clkdm = NULL;
275 	struct clk_hw_omap *hwclk;
276 
277 	hwclk = to_clk_hw_omap(hw);
278 	if (!omap2_clk_is_hw_omap(hw))
279 		return NULL;
280 
281 	if (hwclk && hwclk->clkdm_name)
282 		clkdm = clkdm_lookup(hwclk->clkdm_name);
283 
284 	return clkdm;
285 }
286 
287 /**
288  * ti_sysc_clkdm_init - find clockdomain based on clock
289  * @fck: device functional clock
290  * @ick: device interface clock
291  * @dev: struct device
292  *
293  * Populate clockdomain based on clock. It is needed for
294  * clkdm_deny_idle() and clkdm_allow_idle() for blocking clockdomain
295  * clockdomain idle during reset, enable and idle.
296  *
297  * Note that we assume interconnect driver manages the clocks
298  * and do not need to populate oh->_clk for dynamically
299  * allocated modules.
300  */
301 static int ti_sysc_clkdm_init(struct device *dev,
302 			      struct clk *fck, struct clk *ick,
303 			      struct ti_sysc_cookie *cookie)
304 {
305 	if (!IS_ERR(fck))
306 		cookie->clkdm = ti_sysc_find_one_clockdomain(fck);
307 	if (cookie->clkdm)
308 		return 0;
309 	if (!IS_ERR(ick))
310 		cookie->clkdm = ti_sysc_find_one_clockdomain(ick);
311 	if (cookie->clkdm)
312 		return 0;
313 
314 	return -ENODEV;
315 }
316 
317 static void ti_sysc_clkdm_deny_idle(struct device *dev,
318 				    const struct ti_sysc_cookie *cookie)
319 {
320 	if (cookie->clkdm)
321 		clkdm_deny_idle(cookie->clkdm);
322 }
323 
324 static void ti_sysc_clkdm_allow_idle(struct device *dev,
325 				     const struct ti_sysc_cookie *cookie)
326 {
327 	if (cookie->clkdm)
328 		clkdm_allow_idle(cookie->clkdm);
329 }
330 
331 #ifdef CONFIG_OMAP_HWMOD
332 static int ti_sysc_enable_module(struct device *dev,
333 				 const struct ti_sysc_cookie *cookie)
334 {
335 	if (!cookie->data)
336 		return -EINVAL;
337 
338 	return omap_hwmod_enable(cookie->data);
339 }
340 
341 static int ti_sysc_idle_module(struct device *dev,
342 			       const struct ti_sysc_cookie *cookie)
343 {
344 	if (!cookie->data)
345 		return -EINVAL;
346 
347 	return omap_hwmod_idle(cookie->data);
348 }
349 
350 static int ti_sysc_shutdown_module(struct device *dev,
351 				   const struct ti_sysc_cookie *cookie)
352 {
353 	if (!cookie->data)
354 		return -EINVAL;
355 
356 	return omap_hwmod_shutdown(cookie->data);
357 }
358 #endif	/* CONFIG_OMAP_HWMOD */
359 
360 static bool ti_sysc_soc_type_gp(void)
361 {
362 	return omap_type() == OMAP2_DEVICE_TYPE_GP;
363 }
364 
365 static struct of_dev_auxdata omap_auxdata_lookup[];
366 
367 static struct ti_sysc_platform_data ti_sysc_pdata = {
368 	.auxdata = omap_auxdata_lookup,
369 	.soc_type_gp = ti_sysc_soc_type_gp,
370 	.init_clockdomain = ti_sysc_clkdm_init,
371 	.clkdm_deny_idle = ti_sysc_clkdm_deny_idle,
372 	.clkdm_allow_idle = ti_sysc_clkdm_allow_idle,
373 #ifdef CONFIG_OMAP_HWMOD
374 	.init_module = omap_hwmod_init_module,
375 	.enable_module = ti_sysc_enable_module,
376 	.idle_module = ti_sysc_idle_module,
377 	.shutdown_module = ti_sysc_shutdown_module,
378 #endif
379 };
380 
381 static struct pcs_pdata pcs_pdata;
382 
383 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
384 {
385 	pcs_pdata.irq = irq;
386 	pcs_pdata.rearm = rearm;
387 }
388 
389 static struct ti_prm_platform_data ti_prm_pdata = {
390 	.clkdm_deny_idle = clkdm_deny_idle,
391 	.clkdm_allow_idle = clkdm_allow_idle,
392 	.clkdm_lookup = clkdm_lookup,
393 };
394 
395 /*
396  * GPIOs for TWL are initialized by the I2C bus and need custom
397  * handing until DSS has device tree bindings.
398  */
399 void omap_auxdata_legacy_init(struct device *dev)
400 {
401 	if (dev->platform_data)
402 		return;
403 
404 	if (strcmp("twl4030-gpio", dev_name(dev)))
405 		return;
406 
407 	dev->platform_data = &twl_gpio_auxdata;
408 }
409 
410 #if defined(CONFIG_ARCH_OMAP3) && IS_ENABLED(CONFIG_SND_SOC_OMAP_MCBSP)
411 static struct omap_mcbsp_platform_data mcbsp_pdata;
412 static void __init omap3_mcbsp_init(void)
413 {
414 	omap3_mcbsp_init_pdata_callback(&mcbsp_pdata);
415 }
416 #else
417 static void __init omap3_mcbsp_init(void) {}
418 #endif
419 
420 /*
421  * Few boards still need auxdata populated before we populate
422  * the dev entries in of_platform_populate().
423  */
424 static struct pdata_init auxdata_quirks[] __initdata = {
425 #ifdef CONFIG_SOC_OMAP2420
426 	{ "nokia,n800", omap2420_n8x0_legacy_init, },
427 	{ "nokia,n810", omap2420_n8x0_legacy_init, },
428 	{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
429 #endif
430 #ifdef CONFIG_ARCH_OMAP3
431 	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
432 #endif
433 	{ /* sentinel */ },
434 };
435 
436 struct omap_sr_data __maybe_unused omap_sr_pdata[OMAP_SR_NR];
437 
438 static struct of_dev_auxdata omap_auxdata_lookup[] = {
439 #ifdef CONFIG_MACH_NOKIA_N8X0
440 	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
441 	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
442 #endif
443 #ifdef CONFIG_ARCH_OMAP3
444 	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
445 		       &omap3_iommu_pdata),
446 	OF_DEV_AUXDATA("ti,omap2-iommu", 0x480bd400, "480bd400.mmu",
447 		       &omap3_iommu_isp_pdata),
448 	OF_DEV_AUXDATA("ti,omap3-smartreflex-core", 0x480cb000,
449 		       "480cb000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
450 	OF_DEV_AUXDATA("ti,omap3-smartreflex-mpu-iva", 0x480c9000,
451 		       "480c9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
452 	OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]),
453 	OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]),
454 	/* Only on am3517 */
455 	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
456 	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
457 		       &am35xx_emac_pdata),
458 	OF_DEV_AUXDATA("nokia,n900-rom-rng", 0, NULL, rx51_secure_rng_call),
459 	/* McBSP modules with sidetone core */
460 #if IS_ENABLED(CONFIG_SND_SOC_OMAP_MCBSP)
461 	OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49022000, "49022000.mcbsp", &mcbsp_pdata),
462 	OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49024000, "49024000.mcbsp", &mcbsp_pdata),
463 #endif
464 #endif
465 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
466 	OF_DEV_AUXDATA("ti,omap4-smartreflex-iva", 0x4a0db000,
467 		       "4a0db000.smartreflex", &omap_sr_pdata[OMAP_SR_IVA]),
468 	OF_DEV_AUXDATA("ti,omap4-smartreflex-core", 0x4a0dd000,
469 		       "4a0dd000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
470 	OF_DEV_AUXDATA("ti,omap4-smartreflex-mpu", 0x4a0d9000,
471 		       "4a0d9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
472 #endif
473 #ifdef CONFIG_SOC_DRA7XX
474 	OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x40d01000, "40d01000.mmu",
475 		       &dra7_ipu1_dsp_iommu_pdata),
476 	OF_DEV_AUXDATA("ti,dra7-dsp-iommu", 0x41501000, "41501000.mmu",
477 		       &dra7_ipu1_dsp_iommu_pdata),
478 	OF_DEV_AUXDATA("ti,dra7-iommu", 0x58882000, "58882000.mmu",
479 		       &dra7_ipu1_dsp_iommu_pdata),
480 #endif
481 	/* Common auxdata */
482 	OF_DEV_AUXDATA("simple-pm-bus", 0, NULL, omap_auxdata_lookup),
483 	OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata),
484 	OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
485 	OF_DEV_AUXDATA("ti,omap-prm-inst", 0, NULL, &ti_prm_pdata),
486 	OF_DEV_AUXDATA("ti,omap-sdma", 0, NULL, &dma_plat_info),
487 	{ /* sentinel */ },
488 };
489 
490 /*
491  * Few boards still need to initialize some legacy devices with
492  * platform data until the drivers support device tree.
493  */
494 static struct pdata_init pdata_quirks[] __initdata = {
495 #ifdef CONFIG_ARCH_OMAP3
496 	{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
497 	{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
498 	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
499 	{ "nokia,omap3-n900", nokia_n900_legacy_init, },
500 	{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
501 	{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
502 	{ "logicpd,dm3730-torpedo-devkit", omap3_logicpd_torpedo_init, },
503 	{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
504 	{ "ti,am3517-evm", am3517_evm_legacy_init, },
505 	{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
506 	{ "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, },
507 	{ "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, },
508 #endif
509 	{ /* sentinel */ },
510 };
511 
512 static void pdata_quirks_check(struct pdata_init *quirks)
513 {
514 	while (quirks->compatible) {
515 		if (of_machine_is_compatible(quirks->compatible)) {
516 			if (quirks->fn)
517 				quirks->fn();
518 		}
519 		quirks++;
520 	}
521 }
522 
523 static const char * const pdata_quirks_init_nodes[] = {
524 	"prcm",
525 	"prm",
526 };
527 
528 static void __init
529 pdata_quirks_init_clocks(const struct of_device_id *omap_dt_match_table)
530 {
531 	struct device_node *np;
532 	int i;
533 
534 	for (i = 0; i < ARRAY_SIZE(pdata_quirks_init_nodes); i++) {
535 		np = of_find_node_by_name(NULL, pdata_quirks_init_nodes[i]);
536 		if (!np)
537 			continue;
538 
539 		of_platform_populate(np, omap_dt_match_table,
540 				     omap_auxdata_lookup, NULL);
541 
542 		of_node_put(np);
543 	}
544 }
545 
546 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
547 {
548 	/*
549 	 * We still need this for omap2420 and omap3 PM to work, others are
550 	 * using drivers/misc/sram.c already.
551 	 */
552 	if (of_machine_is_compatible("ti,omap2420") ||
553 	    of_machine_is_compatible("ti,omap3"))
554 		omap_sdrc_init(NULL, NULL);
555 
556 	if (of_machine_is_compatible("ti,omap3"))
557 		omap3_mcbsp_init();
558 	pdata_quirks_check(auxdata_quirks);
559 
560 	pdata_quirks_init_clocks(omap_dt_match_table);
561 
562 	of_platform_populate(NULL, omap_dt_match_table,
563 			     omap_auxdata_lookup, NULL);
564 	pdata_quirks_check(pdata_quirks);
565 }
566