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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         /*
563          * We still need this for omap2420 and omap3 PM to work, others are
564          * using drivers/misc/sram.c already.
565          */
566         if (of_machine_is_compatible("ti,omap2420") ||
567             of_machine_is_compatible("ti,omap3"))
568                 omap_sdrc_init(NULL, NULL);
569
570         pdata_quirks_check(auxdata_quirks);
571         of_platform_populate(NULL, omap_dt_match_table,
572                              omap_auxdata_lookup, NULL);
573         pdata_quirks_check(pdata_quirks);
574 }