arch/arm/mach-omap2/pdata-quirks.c

   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
  19 #include <linux/platform_data/pinctrl-single.h>
  20 #include <linux/platform_data/iommu-omap.h>
  21
  22 #include "am35xx.h"
  23 #include "common.h"
  24 #include "common-board-devices.h"
  25 #include "dss-common.h"
  26 #include "control.h"
  27 #include "omap_device.h"
  28 #include "omap-secure.h"
  29 #include "soc.h"
  30
  31 struct pdata_init {
  32         const char *compatible;
  33         void (*fn)(void);
  34 };
  35
  36 struct of_dev_auxdata omap_auxdata_lookup[];
  37 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
  38
  39 #if IS_ENABLED(CONFIG_WL12XX)
  40
  41 static struct wl12xx_platform_data wl12xx __initdata;
  42
  43 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  44                                              unsigned tcxo_clock,
  45                                              int gpio)
  46 {
  47         int res;
  48
  49         wl12xx.board_ref_clock = ref_clock;
  50         wl12xx.board_tcxo_clock = tcxo_clock;
  51         wl12xx.irq = gpio_to_irq(gpio);
  52
  53         res = wl12xx_set_platform_data(&wl12xx);
  54         if (res) {
  55                 pr_err("error setting wl12xx data: %d\n", res);
  56                 return;
  57         }
  58 }
  59 #else
  60 static inline void legacy_init_wl12xx(unsigned ref_clock,
  61                                       unsigned tcxo_clock,
  62                                       int gpio)
  63 {
  64 }
  65 #endif
  66
  67 #ifdef CONFIG_MACH_NOKIA_N8X0
  68 static void __init omap2420_n8x0_legacy_init(void)
  69 {
  70         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  71 }
  72 #else
  73 #define omap2420_n8x0_legacy_init       NULL
  74 #endif
  75
  76 #ifdef CONFIG_ARCH_OMAP3
  77 static 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
  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 };
  91
  92 static 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
 108 static 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
 125 static void __init omap3_sbc_t3730_twl_init(void)
 126 {
 127         twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
 128 }
 129
 130 static void __init omap3_sbc_t3730_legacy_init(void)
 131 {
 132         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 133         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
 134         omap_ads7846_init(1, 57, 0, NULL);
 135 }
 136
 137 static void __init omap3_sbc_t3530_legacy_init(void)
 138 {
 139         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 140         omap_ads7846_init(1, 57, 0, NULL);
 141 }
 142
 143 struct ti_st_plat_data wilink_pdata = {
 144         .nshutdown_gpio = 137,
 145         .dev_name = "/dev/ttyO1",
 146         .flow_cntrl = 1,
 147         .baud_rate = 300000,
 148 };
 149
 150 static struct platform_device wl18xx_device = {
 151         .name   = "kim",
 152         .id     = -1,
 153         .dev    = {
 154                 .platform_data = &wilink_pdata,
 155         }
 156 };
 157
 158 static struct platform_device btwilink_device = {
 159         .name   = "btwilink",
 160         .id     = -1,
 161 };
 162
 163 static void __init omap3_igep0020_rev_f_legacy_init(void)
 164 {
 165         legacy_init_wl12xx(0, 0, 177);
 166         platform_device_register(&wl18xx_device);
 167         platform_device_register(&btwilink_device);
 168 }
 169
 170 static void __init omap3_igep0030_rev_g_legacy_init(void)
 171 {
 172         legacy_init_wl12xx(0, 0, 136);
 173         platform_device_register(&wl18xx_device);
 174         platform_device_register(&btwilink_device);
 175 }
 176
 177 static void __init omap3_evm_legacy_init(void)
 178 {
 179         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
 180 }
 181
 182 static void __init omap3_zoom_legacy_init(void)
 183 {
 184         legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
 185 }
 186
 187 static void am35xx_enable_emac_int(void)
 188 {
 189         u32 v;
 190
 191         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 192         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 193               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 194         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 195         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 196 }
 197
 198 static void am35xx_disable_emac_int(void)
 199 {
 200         u32 v;
 201
 202         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 203         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
 204         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 205         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 206 }
 207
 208 static struct emac_platform_data am35xx_emac_pdata = {
 209         .interrupt_enable       = am35xx_enable_emac_int,
 210         .interrupt_disable      = am35xx_disable_emac_int,
 211 };
 212
 213 static void __init am35xx_emac_reset(void)
 214 {
 215         u32 v;
 216
 217         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 218         v &= ~AM35XX_CPGMACSS_SW_RST;
 219         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 220         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 221 }
 222
 223 static struct gpio cm_t3517_wlan_gpios[] __initdata = {
 224         { 56,   GPIOF_OUT_INIT_HIGH,    "wlan pwr" },
 225         { 4,    GPIOF_OUT_INIT_HIGH,    "xcvr noe" },
 226 };
 227
 228 static void __init omap3_sbc_t3517_wifi_init(void)
 229 {
 230         int err = gpio_request_array(cm_t3517_wlan_gpios,
 231                                 ARRAY_SIZE(cm_t3517_wlan_gpios));
 232         if (err) {
 233                 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
 234                 return;
 235         }
 236
 237         gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
 238         gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
 239
 240         msleep(100);
 241         gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
 242 }
 243
 244 static void __init omap3_sbc_t3517_legacy_init(void)
 245 {
 246         omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
 247         omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
 248         am35xx_emac_reset();
 249         hsmmc2_internal_input_clk();
 250         omap3_sbc_t3517_wifi_init();
 251         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 145);
 252         omap_ads7846_init(1, 57, 0, NULL);
 253 }
 254
 255 static void __init am3517_evm_legacy_init(void)
 256 {
 257         am35xx_emac_reset();
 258 }
 259
 260 static struct platform_device omap3_rom_rng_device = {
 261         .name           = "omap3-rom-rng",
 262         .id             = -1,
 263         .dev    = {
 264                 .platform_data  = rx51_secure_rng_call,
 265         },
 266 };
 267
 268 static void __init nokia_n900_legacy_init(void)
 269 {
 270         hsmmc2_internal_input_clk();
 271
 272         if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
 273                 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
 274                         pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
 275                         /* set IBE to 1 */
 276                         rx51_secure_update_aux_cr(BIT(6), 0);
 277                 } else {
 278                         pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
 279                         pr_warn("Thumb binaries may crash randomly without this workaround\n");
 280                 }
 281
 282                 pr_info("RX-51: Registring OMAP3 HWRNG device\n");
 283                 platform_device_register(&omap3_rom_rng_device);
 284
 285         }
 286 }
 287
 288 static void __init omap3_tao3530_legacy_init(void)
 289 {
 290         hsmmc2_internal_input_clk();
 291 }
 292 #endif /* CONFIG_ARCH_OMAP3 */
 293
 294 #ifdef CONFIG_ARCH_OMAP4
 295 static void __init omap4_sdp_legacy_init(void)
 296 {
 297         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
 298                            WL12XX_TCXOCLOCK_26, 53);
 299 }
 300
 301 static void __init omap4_panda_legacy_init(void)
 302 {
 303         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 304 }
 305
 306 static void __init var_som_om44_legacy_init(void)
 307 {
 308         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 41);
 309 }
 310 #endif
 311
 312 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 313 static struct iommu_platform_data omap4_iommu_pdata = {
 314         .reset_name = "mmu_cache",
 315         .assert_reset = omap_device_assert_hardreset,
 316         .deassert_reset = omap_device_deassert_hardreset,
 317 };
 318 #endif
 319
 320 #ifdef CONFIG_SOC_AM33XX
 321 static void __init am335x_evmsk_legacy_init(void)
 322 {
 323         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31);
 324 }
 325 #endif
 326
 327 #ifdef CONFIG_SOC_OMAP5
 328 static void __init omap5_uevm_legacy_init(void)
 329 {
 330 }
 331 #endif
 332
 333 static struct pcs_pdata pcs_pdata;
 334
 335 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 336 {
 337         pcs_pdata.irq = irq;
 338         pcs_pdata.rearm = rearm;
 339 }
 340
 341 /*
 342  * GPIOs for TWL are initialized by the I2C bus and need custom
 343  * handing until DSS has device tree bindings.
 344  */
 345 void omap_auxdata_legacy_init(struct device *dev)
 346 {
 347         if (dev->platform_data)
 348                 return;
 349
 350         if (strcmp("twl4030-gpio", dev_name(dev)))
 351                 return;
 352
 353         dev->platform_data = &twl_gpio_auxdata;
 354 }
 355
 356 /*
 357  * Few boards still need auxdata populated before we populate
 358  * the dev entries in of_platform_populate().
 359  */
 360 static struct pdata_init auxdata_quirks[] __initdata = {
 361 #ifdef CONFIG_SOC_OMAP2420
 362         { "nokia,n800", omap2420_n8x0_legacy_init, },
 363         { "nokia,n810", omap2420_n8x0_legacy_init, },
 364         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 365 #endif
 366 #ifdef CONFIG_ARCH_OMAP3
 367         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
 368 #endif
 369         { /* sentinel */ },
 370 };
 371
 372 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 373 #ifdef CONFIG_MACH_NOKIA_N8X0
 374         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 375         OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
 376         OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
 377 #endif
 378 #ifdef CONFIG_ARCH_OMAP3
 379         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 380         OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
 381         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 382         OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 383                        &omap3_iommu_pdata),
 384         /* Only on am3517 */
 385         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 386         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 387                        &am35xx_emac_pdata),
 388 #endif
 389 #ifdef CONFIG_ARCH_OMAP4
 390         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 391         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 392 #endif
 393 #ifdef CONFIG_SOC_OMAP5
 394         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
 395         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
 396 #endif
 397 #ifdef CONFIG_SOC_DRA7XX
 398         OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
 399 #endif
 400 #ifdef CONFIG_SOC_AM43XX
 401         OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
 402 #endif
 403 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 404         OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
 405                        &omap4_iommu_pdata),
 406         OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
 407                        &omap4_iommu_pdata),
 408 #endif
 409         { /* sentinel */ },
 410 };
 411
 412 /*
 413  * Few boards still need to initialize some legacy devices with
 414  * platform data until the drivers support device tree.
 415  */
 416 static struct pdata_init pdata_quirks[] __initdata = {
 417 #ifdef CONFIG_ARCH_OMAP3
 418         { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
 419         { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
 420         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
 421         { "nokia,omap3-n900", nokia_n900_legacy_init, },
 422         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 423         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 424         { "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
 425         { "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
 426         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 427         { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
 428         { "ti,am3517-evm", am3517_evm_legacy_init, },
 429         { "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
 430 #endif
 431 #ifdef CONFIG_ARCH_OMAP4
 432         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 433         { "ti,omap4-panda", omap4_panda_legacy_init, },
 434         { "variscite,var-dvk-om44", var_som_om44_legacy_init, },
 435         { "variscite,var-stk-om44", var_som_om44_legacy_init, },
 436 #endif
 437 #ifdef CONFIG_SOC_AM33XX
 438         { "ti,am335x-evmsk", am335x_evmsk_legacy_init, },
 439 #endif
 440 #ifdef CONFIG_SOC_OMAP5
 441         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 442 #endif
 443         { /* sentinel */ },
 444 };
 445
 446 static void pdata_quirks_check(struct pdata_init *quirks)
 447 {
 448         while (quirks->compatible) {
 449                 if (of_machine_is_compatible(quirks->compatible)) {
 450                         if (quirks->fn)
 451                                 quirks->fn();
 452                         break;
 453                 }
 454                 quirks++;
 455         }
 456 }
 457
 458 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
 459 {
 460         omap_sdrc_init(NULL, NULL);
 461         pdata_quirks_check(auxdata_quirks);
 462         of_platform_populate(NULL, omap_dt_match_table,
 463                              omap_auxdata_lookup, NULL);
 464         pdata_quirks_check(pdata_quirks);
 465 }