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
  18 #include <linux/platform_data/pinctrl-single.h>
  19 #include <linux/platform_data/iommu-omap.h>
  20
  21 #include "common.h"
  22 #include "common-board-devices.h"
  23 #include "dss-common.h"
  24 #include "control.h"
  25 #include "omap_device.h"
  26 #include "omap-secure.h"
  27 #include "soc.h"
  28
  29 struct pdata_init {
  30         const char *compatible;
  31         void (*fn)(void);
  32 };
  33
  34 struct of_dev_auxdata omap_auxdata_lookup[];
  35 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
  36
  37 #ifdef CONFIG_MACH_NOKIA_N8X0
  38 static void __init omap2420_n8x0_legacy_init(void)
  39 {
  40         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  41 }
  42 #else
  43 #define omap2420_n8x0_legacy_init       NULL
  44 #endif
  45
  46 #ifdef CONFIG_ARCH_OMAP3
  47 /*
  48  * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
  49  * mode for MMC1 in case bootloader did not configure things.
  50  * Note that if the pins are used for MMC1, pbias-regulator
  51  * manages the IO voltage.
  52  */
  53 static void __init omap3_gpio126_127_129(void)
  54 {
  55         u32 reg;
  56
  57         reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
  58         reg &= ~OMAP343X_PBIASLITEVMODE1;
  59         reg |= OMAP343X_PBIASLITEPWRDNZ1;
  60         omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
  61         if (cpu_is_omap3630()) {
  62                 reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
  63                 reg |= OMAP36XX_GPIO_IO_PWRDNZ;
  64                 omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
  65         }
  66 }
  67
  68 static void __init hsmmc2_internal_input_clk(void)
  69 {
  70         u32 reg;
  71
  72         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  73         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  74         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  75 }
  76
  77 static struct iommu_platform_data omap3_iommu_pdata = {
  78         .reset_name = "mmu",
  79         .assert_reset = omap_device_assert_hardreset,
  80         .deassert_reset = omap_device_deassert_hardreset,
  81 };
  82
  83 static int omap3_sbc_t3730_twl_callback(struct device *dev,
  84                                            unsigned gpio,
  85                                            unsigned ngpio)
  86 {
  87         int res;
  88
  89         res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
  90                                "wlan pwr");
  91         if (res)
  92                 return res;
  93
  94         gpio_export(gpio, 0);
  95
  96         return 0;
  97 }
  98
  99 static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
 100 {
 101         int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
 102
 103         if (err) {
 104                 pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
 105                         hub_name, err);
 106                 return;
 107         }
 108
 109         gpio_export(gpio, 0);
 110
 111         udelay(10);
 112         gpio_set_value(gpio, 1);
 113         msleep(1);
 114 }
 115
 116 static void __init omap3_sbc_t3730_twl_init(void)
 117 {
 118         twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
 119 }
 120
 121 static void __init omap3_sbc_t3730_legacy_init(void)
 122 {
 123         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 124 }
 125
 126 static void __init omap3_sbc_t3530_legacy_init(void)
 127 {
 128         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 129 }
 130
 131 struct ti_st_plat_data wilink_pdata = {
 132         .nshutdown_gpio = 137,
 133         .dev_name = "/dev/ttyO1",
 134         .flow_cntrl = 1,
 135         .baud_rate = 300000,
 136 };
 137
 138 static struct platform_device wl18xx_device = {
 139         .name   = "kim",
 140         .id     = -1,
 141         .dev    = {
 142                 .platform_data = &wilink_pdata,
 143         }
 144 };
 145
 146 static struct platform_device btwilink_device = {
 147         .name   = "btwilink",
 148         .id     = -1,
 149 };
 150
 151 static void __init omap3_igep0020_rev_f_legacy_init(void)
 152 {
 153         platform_device_register(&wl18xx_device);
 154         platform_device_register(&btwilink_device);
 155 }
 156
 157 static void __init omap3_igep0030_rev_g_legacy_init(void)
 158 {
 159         platform_device_register(&wl18xx_device);
 160         platform_device_register(&btwilink_device);
 161 }
 162
 163 static void __init omap3_evm_legacy_init(void)
 164 {
 165         hsmmc2_internal_input_clk();
 166 }
 167
 168 static void am35xx_enable_emac_int(void)
 169 {
 170         u32 v;
 171
 172         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 173         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 174               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 175         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 176         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 177 }
 178
 179 static void am35xx_disable_emac_int(void)
 180 {
 181         u32 v;
 182
 183         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 184         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_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 struct emac_platform_data am35xx_emac_pdata = {
 190         .interrupt_enable       = am35xx_enable_emac_int,
 191         .interrupt_disable      = am35xx_disable_emac_int,
 192 };
 193
 194 static void __init am35xx_emac_reset(void)
 195 {
 196         u32 v;
 197
 198         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 199         v &= ~AM35XX_CPGMACSS_SW_RST;
 200         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 201         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 202 }
 203
 204 static struct gpio cm_t3517_wlan_gpios[] __initdata = {
 205         { 56,   GPIOF_OUT_INIT_HIGH,    "wlan pwr" },
 206         { 4,    GPIOF_OUT_INIT_HIGH,    "xcvr noe" },
 207 };
 208
 209 static void __init omap3_sbc_t3517_wifi_init(void)
 210 {
 211         int err = gpio_request_array(cm_t3517_wlan_gpios,
 212                                 ARRAY_SIZE(cm_t3517_wlan_gpios));
 213         if (err) {
 214                 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
 215                 return;
 216         }
 217
 218         gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
 219         gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
 220
 221         msleep(100);
 222         gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
 223 }
 224
 225 static void __init omap3_sbc_t3517_legacy_init(void)
 226 {
 227         omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
 228         omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
 229         am35xx_emac_reset();
 230         hsmmc2_internal_input_clk();
 231         omap3_sbc_t3517_wifi_init();
 232 }
 233
 234 static void __init am3517_evm_legacy_init(void)
 235 {
 236         am35xx_emac_reset();
 237 }
 238
 239 static struct platform_device omap3_rom_rng_device = {
 240         .name           = "omap3-rom-rng",
 241         .id             = -1,
 242         .dev    = {
 243                 .platform_data  = rx51_secure_rng_call,
 244         },
 245 };
 246
 247 static void __init nokia_n900_legacy_init(void)
 248 {
 249         hsmmc2_internal_input_clk();
 250
 251         if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
 252                 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
 253                         pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
 254                         /* set IBE to 1 */
 255                         rx51_secure_update_aux_cr(BIT(6), 0);
 256                 } else {
 257                         pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
 258                         pr_warn("Thumb binaries may crash randomly without this workaround\n");
 259                 }
 260
 261                 pr_info("RX-51: Registring OMAP3 HWRNG device\n");
 262                 platform_device_register(&omap3_rom_rng_device);
 263
 264         }
 265 }
 266
 267 static void __init omap3_tao3530_legacy_init(void)
 268 {
 269         hsmmc2_internal_input_clk();
 270 }
 271 #endif /* CONFIG_ARCH_OMAP3 */
 272
 273 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 274 static struct iommu_platform_data omap4_iommu_pdata = {
 275         .reset_name = "mmu_cache",
 276         .assert_reset = omap_device_assert_hardreset,
 277         .deassert_reset = omap_device_deassert_hardreset,
 278 };
 279 #endif
 280
 281 #ifdef CONFIG_SOC_OMAP5
 282 static void __init omap5_uevm_legacy_init(void)
 283 {
 284 }
 285 #endif
 286
 287 static struct pcs_pdata pcs_pdata;
 288
 289 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 290 {
 291         pcs_pdata.irq = irq;
 292         pcs_pdata.rearm = rearm;
 293 }
 294
 295 /*
 296  * GPIOs for TWL are initialized by the I2C bus and need custom
 297  * handing until DSS has device tree bindings.
 298  */
 299 void omap_auxdata_legacy_init(struct device *dev)
 300 {
 301         if (dev->platform_data)
 302                 return;
 303
 304         if (strcmp("twl4030-gpio", dev_name(dev)))
 305                 return;
 306
 307         dev->platform_data = &twl_gpio_auxdata;
 308 }
 309
 310 /*
 311  * Few boards still need auxdata populated before we populate
 312  * the dev entries in of_platform_populate().
 313  */
 314 static struct pdata_init auxdata_quirks[] __initdata = {
 315 #ifdef CONFIG_SOC_OMAP2420
 316         { "nokia,n800", omap2420_n8x0_legacy_init, },
 317         { "nokia,n810", omap2420_n8x0_legacy_init, },
 318         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 319 #endif
 320 #ifdef CONFIG_ARCH_OMAP3
 321         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
 322 #endif
 323         { /* sentinel */ },
 324 };
 325
 326 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 327 #ifdef CONFIG_MACH_NOKIA_N8X0
 328         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 329         OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
 330         OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
 331 #endif
 332 #ifdef CONFIG_ARCH_OMAP3
 333         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 334         OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
 335         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 336         OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 337                        &omap3_iommu_pdata),
 338         /* Only on am3517 */
 339         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 340         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 341                        &am35xx_emac_pdata),
 342 #endif
 343 #ifdef CONFIG_ARCH_OMAP4
 344         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 345         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 346 #endif
 347 #ifdef CONFIG_SOC_OMAP5
 348         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
 349         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
 350 #endif
 351 #ifdef CONFIG_SOC_DRA7XX
 352         OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
 353 #endif
 354 #ifdef CONFIG_SOC_AM43XX
 355         OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
 356 #endif
 357 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 358         OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
 359                        &omap4_iommu_pdata),
 360         OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
 361                        &omap4_iommu_pdata),
 362 #endif
 363         { /* sentinel */ },
 364 };
 365
 366 /*
 367  * Few boards still need to initialize some legacy devices with
 368  * platform data until the drivers support device tree.
 369  */
 370 static struct pdata_init pdata_quirks[] __initdata = {
 371 #ifdef CONFIG_ARCH_OMAP3
 372         { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
 373         { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
 374         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
 375         { "nokia,omap3-n900", nokia_n900_legacy_init, },
 376         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 377         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 378         { "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
 379         { "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
 380         { "logicpd,dm3730-torpedo-devkit", omap3_gpio126_127_129, },
 381         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 382         { "ti,am3517-evm", am3517_evm_legacy_init, },
 383         { "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
 384 #endif
 385 #ifdef CONFIG_SOC_OMAP5
 386         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 387 #endif
 388         { /* sentinel */ },
 389 };
 390
 391 static void pdata_quirks_check(struct pdata_init *quirks)
 392 {
 393         while (quirks->compatible) {
 394                 if (of_machine_is_compatible(quirks->compatible)) {
 395                         if (quirks->fn)
 396                                 quirks->fn();
 397                         break;
 398                 }
 399                 quirks++;
 400         }
 401 }
 402
 403 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
 404 {
 405         omap_sdrc_init(NULL, NULL);
 406         pdata_quirks_check(auxdata_quirks);
 407         of_platform_populate(NULL, omap_dt_match_table,
 408                              omap_auxdata_lookup, NULL);
 409         pdata_quirks_check(pdata_quirks);
 410 }