kernel/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 static void __init hsmmc2_internal_input_clk(void)
  48 {
  49         u32 reg;
  50
  51         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  52         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  53         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  54 }
  55
  56 static struct iommu_platform_data omap3_iommu_pdata = {
  57         .reset_name = "mmu",
  58         .assert_reset = omap_device_assert_hardreset,
  59         .deassert_reset = omap_device_deassert_hardreset,
  60 };
  61
  62 static int omap3_sbc_t3730_twl_callback(struct device *dev,
  63                                            unsigned gpio,
  64                                            unsigned ngpio)
  65 {
  66         int res;
  67
  68         res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
  69                                "wlan pwr");
  70         if (res)
  71                 return res;
  72
  73         gpio_export(gpio, 0);
  74
  75         return 0;
  76 }
  77
  78 static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
  79 {
  80         int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
  81
  82         if (err) {
  83                 pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
  84                         hub_name, err);
  85                 return;
  86         }
  87
  88         gpio_export(gpio, 0);
  89
  90         udelay(10);
  91         gpio_set_value(gpio, 1);
  92         msleep(1);
  93 }
  94
  95 static void __init omap3_sbc_t3730_twl_init(void)
  96 {
  97         twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
  98 }
  99
 100 static void __init omap3_sbc_t3730_legacy_init(void)
 101 {
 102         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 103 }
 104
 105 static void __init omap3_sbc_t3530_legacy_init(void)
 106 {
 107         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 108 }
 109
 110 struct ti_st_plat_data wilink_pdata = {
 111         .nshutdown_gpio = 137,
 112         .dev_name = "/dev/ttyO1",
 113         .flow_cntrl = 1,
 114         .baud_rate = 300000,
 115 };
 116
 117 static struct platform_device wl18xx_device = {
 118         .name   = "kim",
 119         .id     = -1,
 120         .dev    = {
 121                 .platform_data = &wilink_pdata,
 122         }
 123 };
 124
 125 static struct platform_device btwilink_device = {
 126         .name   = "btwilink",
 127         .id     = -1,
 128 };
 129
 130 static void __init omap3_igep0020_rev_f_legacy_init(void)
 131 {
 132         platform_device_register(&wl18xx_device);
 133         platform_device_register(&btwilink_device);
 134 }
 135
 136 static void __init omap3_igep0030_rev_g_legacy_init(void)
 137 {
 138         platform_device_register(&wl18xx_device);
 139         platform_device_register(&btwilink_device);
 140 }
 141
 142 static void __init omap3_evm_legacy_init(void)
 143 {
 144         hsmmc2_internal_input_clk();
 145 }
 146
 147 static void am35xx_enable_emac_int(void)
 148 {
 149         u32 v;
 150
 151         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 152         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 153               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 154         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 155         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 156 }
 157
 158 static void am35xx_disable_emac_int(void)
 159 {
 160         u32 v;
 161
 162         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 163         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
 164         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 165         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 166 }
 167
 168 static struct emac_platform_data am35xx_emac_pdata = {
 169         .interrupt_enable       = am35xx_enable_emac_int,
 170         .interrupt_disable      = am35xx_disable_emac_int,
 171 };
 172
 173 static void __init am35xx_emac_reset(void)
 174 {
 175         u32 v;
 176
 177         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 178         v &= ~AM35XX_CPGMACSS_SW_RST;
 179         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 180         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 181 }
 182
 183 static struct gpio cm_t3517_wlan_gpios[] __initdata = {
 184         { 56,   GPIOF_OUT_INIT_HIGH,    "wlan pwr" },
 185         { 4,    GPIOF_OUT_INIT_HIGH,    "xcvr noe" },
 186 };
 187
 188 static void __init omap3_sbc_t3517_wifi_init(void)
 189 {
 190         int err = gpio_request_array(cm_t3517_wlan_gpios,
 191                                 ARRAY_SIZE(cm_t3517_wlan_gpios));
 192         if (err) {
 193                 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
 194                 return;
 195         }
 196
 197         gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
 198         gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);
 199
 200         msleep(100);
 201         gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
 202 }
 203
 204 static void __init omap3_sbc_t3517_legacy_init(void)
 205 {
 206         omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
 207         omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
 208         am35xx_emac_reset();
 209         hsmmc2_internal_input_clk();
 210         omap3_sbc_t3517_wifi_init();
 211 }
 212
 213 static void __init am3517_evm_legacy_init(void)
 214 {
 215         am35xx_emac_reset();
 216 }
 217
 218 static struct platform_device omap3_rom_rng_device = {
 219         .name           = "omap3-rom-rng",
 220         .id             = -1,
 221         .dev    = {
 222                 .platform_data  = rx51_secure_rng_call,
 223         },
 224 };
 225
 226 static void __init nokia_n900_legacy_init(void)
 227 {
 228         hsmmc2_internal_input_clk();
 229
 230         if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
 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                 pr_info("RX-51: Registring OMAP3 HWRNG device\n");
 241                 platform_device_register(&omap3_rom_rng_device);
 242
 243         }
 244 }
 245
 246 static void __init omap3_tao3530_legacy_init(void)
 247 {
 248         hsmmc2_internal_input_clk();
 249 }
 250 #endif /* CONFIG_ARCH_OMAP3 */
 251
 252 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 253 static struct iommu_platform_data omap4_iommu_pdata = {
 254         .reset_name = "mmu_cache",
 255         .assert_reset = omap_device_assert_hardreset,
 256         .deassert_reset = omap_device_deassert_hardreset,
 257 };
 258 #endif
 259
 260 #ifdef CONFIG_SOC_OMAP5
 261 static void __init omap5_uevm_legacy_init(void)
 262 {
 263 }
 264 #endif
 265
 266 static struct pcs_pdata pcs_pdata;
 267
 268 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 269 {
 270         pcs_pdata.irq = irq;
 271         pcs_pdata.rearm = rearm;
 272 }
 273
 274 /*
 275  * GPIOs for TWL are initialized by the I2C bus and need custom
 276  * handing until DSS has device tree bindings.
 277  */
 278 void omap_auxdata_legacy_init(struct device *dev)
 279 {
 280         if (dev->platform_data)
 281                 return;
 282
 283         if (strcmp("twl4030-gpio", dev_name(dev)))
 284                 return;
 285
 286         dev->platform_data = &twl_gpio_auxdata;
 287 }
 288
 289 /*
 290  * Few boards still need auxdata populated before we populate
 291  * the dev entries in of_platform_populate().
 292  */
 293 static struct pdata_init auxdata_quirks[] __initdata = {
 294 #ifdef CONFIG_SOC_OMAP2420
 295         { "nokia,n800", omap2420_n8x0_legacy_init, },
 296         { "nokia,n810", omap2420_n8x0_legacy_init, },
 297         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 298 #endif
 299 #ifdef CONFIG_ARCH_OMAP3
 300         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
 301 #endif
 302         { /* sentinel */ },
 303 };
 304
 305 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 306 #ifdef CONFIG_MACH_NOKIA_N8X0
 307         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 308         OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
 309         OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
 310 #endif
 311 #ifdef CONFIG_ARCH_OMAP3
 312         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 313         OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
 314         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 315         OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 316                        &omap3_iommu_pdata),
 317         /* Only on am3517 */
 318         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 319         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 320                        &am35xx_emac_pdata),
 321 #endif
 322 #ifdef CONFIG_ARCH_OMAP4
 323         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 324         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 325 #endif
 326 #ifdef CONFIG_SOC_OMAP5
 327         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
 328         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
 329 #endif
 330 #ifdef CONFIG_SOC_DRA7XX
 331         OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
 332 #endif
 333 #ifdef CONFIG_SOC_AM43XX
 334         OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
 335 #endif
 336 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 337         OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
 338                        &omap4_iommu_pdata),
 339         OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
 340                        &omap4_iommu_pdata),
 341 #endif
 342         { /* sentinel */ },
 343 };
 344
 345 /*
 346  * Few boards still need to initialize some legacy devices with
 347  * platform data until the drivers support device tree.
 348  */
 349 static struct pdata_init pdata_quirks[] __initdata = {
 350 #ifdef CONFIG_ARCH_OMAP3
 351         { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
 352         { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
 353         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
 354         { "nokia,omap3-n900", nokia_n900_legacy_init, },
 355         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 356         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 357         { "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
 358         { "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
 359         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 360         { "ti,am3517-evm", am3517_evm_legacy_init, },
 361         { "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
 362 #endif
 363 #ifdef CONFIG_SOC_OMAP5
 364         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 365 #endif
 366         { /* sentinel */ },
 367 };
 368
 369 static void pdata_quirks_check(struct pdata_init *quirks)
 370 {
 371         while (quirks->compatible) {
 372                 if (of_machine_is_compatible(quirks->compatible)) {
 373                         if (quirks->fn)
 374                                 quirks->fn();
 375                         break;
 376                 }
 377                 quirks++;
 378         }
 379 }
 380
 381 void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
 382 {
 383         omap_sdrc_init(NULL, NULL);
 384         pdata_quirks_check(auxdata_quirks);
 385         of_platform_populate(NULL, omap_dt_match_table,
 386                              omap_auxdata_lookup, NULL);
 387         pdata_quirks_check(pdata_quirks);
 388 }