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 } 463