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