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/wl12xx.h> 17 18 #include <linux/platform_data/pinctrl-single.h> 19 #include <linux/platform_data/iommu-omap.h> 20 21 #include "am35xx.h" 22 #include "common.h" 23 #include "common-board-devices.h" 24 #include "dss-common.h" 25 #include "control.h" 26 #include "omap_device.h" 27 #include "omap-secure.h" 28 #include "soc.h" 29 30 struct pdata_init { 31 const char *compatible; 32 void (*fn)(void); 33 }; 34 35 struct of_dev_auxdata omap_auxdata_lookup[]; 36 static struct twl4030_gpio_platform_data twl_gpio_auxdata; 37 38 #if IS_ENABLED(CONFIG_WL12XX) 39 40 static struct wl12xx_platform_data wl12xx __initdata; 41 42 static void __init __used legacy_init_wl12xx(unsigned ref_clock, 43 unsigned tcxo_clock, 44 int gpio) 45 { 46 int res; 47 48 wl12xx.board_ref_clock = ref_clock; 49 wl12xx.board_tcxo_clock = tcxo_clock; 50 wl12xx.irq = gpio_to_irq(gpio); 51 52 res = wl12xx_set_platform_data(&wl12xx); 53 if (res) { 54 pr_err("error setting wl12xx data: %d\n", res); 55 return; 56 } 57 } 58 #else 59 static inline void legacy_init_wl12xx(unsigned ref_clock, 60 unsigned tcxo_clock, 61 int gpio) 62 { 63 } 64 #endif 65 66 #ifdef CONFIG_MACH_NOKIA_N8X0 67 static void __init omap2420_n8x0_legacy_init(void) 68 { 69 omap_auxdata_lookup[0].platform_data = n8x0_legacy_init(); 70 } 71 #else 72 #define omap2420_n8x0_legacy_init NULL 73 #endif 74 75 #ifdef CONFIG_ARCH_OMAP3 76 static void __init hsmmc2_internal_input_clk(void) 77 { 78 u32 reg; 79 80 reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1); 81 reg |= OMAP2_MMCSDIO2ADPCLKISEL; 82 omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1); 83 } 84 85 static struct iommu_platform_data omap3_iommu_pdata = { 86 .reset_name = "mmu", 87 .assert_reset = omap_device_assert_hardreset, 88 .deassert_reset = omap_device_deassert_hardreset, 89 }; 90 91 static int omap3_sbc_t3730_twl_callback(struct device *dev, 92 unsigned gpio, 93 unsigned ngpio) 94 { 95 int res; 96 97 res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH, 98 "wlan pwr"); 99 if (res) 100 return res; 101 102 gpio_export(gpio, 0); 103 104 return 0; 105 } 106 107 static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name) 108 { 109 int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name); 110 111 if (err) { 112 pr_err("SBC-T3x: %s reset gpio request failed: %d\n", 113 hub_name, err); 114 return; 115 } 116 117 gpio_export(gpio, 0); 118 119 udelay(10); 120 gpio_set_value(gpio, 1); 121 msleep(1); 122 } 123 124 static void __init omap3_sbc_t3730_twl_init(void) 125 { 126 twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback; 127 } 128 129 static void __init omap3_sbc_t3730_legacy_init(void) 130 { 131 omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); 132 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136); 133 omap_ads7846_init(1, 57, 0, NULL); 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 omap_ads7846_init(1, 57, 0, NULL); 140 } 141 142 static void __init omap3_igep0020_legacy_init(void) 143 { 144 } 145 146 static void __init omap3_evm_legacy_init(void) 147 { 148 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149); 149 } 150 151 static void __init omap3_zoom_legacy_init(void) 152 { 153 legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162); 154 } 155 156 static void am35xx_enable_emac_int(void) 157 { 158 u32 v; 159 160 v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); 161 v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR | 162 AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR); 163 omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR); 164 omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */ 165 } 166 167 static void am35xx_disable_emac_int(void) 168 { 169 u32 v; 170 171 v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); 172 v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR); 173 omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR); 174 omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */ 175 } 176 177 static struct emac_platform_data am35xx_emac_pdata = { 178 .interrupt_enable = am35xx_enable_emac_int, 179 .interrupt_disable = am35xx_disable_emac_int, 180 }; 181 182 static void __init am35xx_emac_reset(void) 183 { 184 u32 v; 185 186 v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); 187 v &= ~AM35XX_CPGMACSS_SW_RST; 188 omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET); 189 omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */ 190 } 191 192 static struct gpio cm_t3517_wlan_gpios[] __initdata = { 193 { 56, GPIOF_OUT_INIT_HIGH, "wlan pwr" }, 194 { 4, GPIOF_OUT_INIT_HIGH, "xcvr noe" }, 195 }; 196 197 static void __init omap3_sbc_t3517_wifi_init(void) 198 { 199 int err = gpio_request_array(cm_t3517_wlan_gpios, 200 ARRAY_SIZE(cm_t3517_wlan_gpios)); 201 if (err) { 202 pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err); 203 return; 204 } 205 206 gpio_export(cm_t3517_wlan_gpios[0].gpio, 0); 207 gpio_export(cm_t3517_wlan_gpios[1].gpio, 0); 208 209 msleep(100); 210 gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0); 211 } 212 213 static void __init omap3_sbc_t3517_legacy_init(void) 214 { 215 omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub"); 216 omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub"); 217 am35xx_emac_reset(); 218 hsmmc2_internal_input_clk(); 219 omap3_sbc_t3517_wifi_init(); 220 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 145); 221 omap_ads7846_init(1, 57, 0, NULL); 222 } 223 224 static void __init am3517_evm_legacy_init(void) 225 { 226 am35xx_emac_reset(); 227 } 228 229 static struct platform_device omap3_rom_rng_device = { 230 .name = "omap3-rom-rng", 231 .id = -1, 232 .dev = { 233 .platform_data = rx51_secure_rng_call, 234 }, 235 }; 236 237 static void __init nokia_n900_legacy_init(void) 238 { 239 hsmmc2_internal_input_clk(); 240 241 if (omap_type() == OMAP2_DEVICE_TYPE_SEC) { 242 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) { 243 pr_info("RX-51: Enabling ARM errata 430973 workaround\n"); 244 /* set IBE to 1 */ 245 rx51_secure_update_aux_cr(BIT(6), 0); 246 } else { 247 pr_warning("RX-51: Not enabling ARM errata 430973 workaround\n"); 248 pr_warning("Thumb binaries may crash randomly without this workaround\n"); 249 } 250 251 pr_info("RX-51: Registring OMAP3 HWRNG device\n"); 252 platform_device_register(&omap3_rom_rng_device); 253 254 } 255 } 256 #endif /* CONFIG_ARCH_OMAP3 */ 257 258 #ifdef CONFIG_ARCH_OMAP4 259 static void __init omap4_sdp_legacy_init(void) 260 { 261 legacy_init_wl12xx(WL12XX_REFCLOCK_26, 262 WL12XX_TCXOCLOCK_26, 53); 263 } 264 265 static void __init omap4_panda_legacy_init(void) 266 { 267 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53); 268 } 269 270 static void __init var_som_om44_legacy_init(void) 271 { 272 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 41); 273 } 274 #endif 275 276 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) 277 static struct iommu_platform_data omap4_iommu_pdata = { 278 .reset_name = "mmu_cache", 279 .assert_reset = omap_device_assert_hardreset, 280 .deassert_reset = omap_device_deassert_hardreset, 281 }; 282 #endif 283 284 #ifdef CONFIG_SOC_AM33XX 285 static void __init am335x_evmsk_legacy_init(void) 286 { 287 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31); 288 } 289 #endif 290 291 #ifdef CONFIG_SOC_OMAP5 292 static void __init omap5_uevm_legacy_init(void) 293 { 294 } 295 #endif 296 297 static struct pcs_pdata pcs_pdata; 298 299 void omap_pcs_legacy_init(int irq, void (*rearm)(void)) 300 { 301 pcs_pdata.irq = irq; 302 pcs_pdata.rearm = rearm; 303 } 304 305 /* 306 * GPIOs for TWL are initialized by the I2C bus and need custom 307 * handing until DSS has device tree bindings. 308 */ 309 void omap_auxdata_legacy_init(struct device *dev) 310 { 311 if (dev->platform_data) 312 return; 313 314 if (strcmp("twl4030-gpio", dev_name(dev))) 315 return; 316 317 dev->platform_data = &twl_gpio_auxdata; 318 } 319 320 /* 321 * Few boards still need auxdata populated before we populate 322 * the dev entries in of_platform_populate(). 323 */ 324 static struct pdata_init auxdata_quirks[] __initdata = { 325 #ifdef CONFIG_SOC_OMAP2420 326 { "nokia,n800", omap2420_n8x0_legacy_init, }, 327 { "nokia,n810", omap2420_n8x0_legacy_init, }, 328 { "nokia,n810-wimax", omap2420_n8x0_legacy_init, }, 329 #endif 330 #ifdef CONFIG_ARCH_OMAP3 331 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, }, 332 #endif 333 { /* sentinel */ }, 334 }; 335 336 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = { 337 #ifdef CONFIG_MACH_NOKIA_N8X0 338 OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL), 339 #endif 340 #ifdef CONFIG_ARCH_OMAP3 341 OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata), 342 OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata), 343 OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata), 344 OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu", 345 &omap3_iommu_pdata), 346 /* Only on am3517 */ 347 OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL), 348 OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0", 349 &am35xx_emac_pdata), 350 #endif 351 #ifdef CONFIG_ARCH_OMAP4 352 OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata), 353 OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata), 354 #endif 355 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) 356 OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu", 357 &omap4_iommu_pdata), 358 OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu", 359 &omap4_iommu_pdata), 360 #endif 361 { /* sentinel */ }, 362 }; 363 364 /* 365 * Few boards still need to initialize some legacy devices with 366 * platform data until the drivers support device tree. 367 */ 368 static struct pdata_init pdata_quirks[] __initdata = { 369 #ifdef CONFIG_ARCH_OMAP3 370 { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, }, 371 { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, }, 372 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, }, 373 { "nokia,omap3-n900", nokia_n900_legacy_init, }, 374 { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, 375 { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, 376 { "isee,omap3-igep0020", omap3_igep0020_legacy_init, }, 377 { "ti,omap3-evm-37xx", omap3_evm_legacy_init, }, 378 { "ti,omap3-zoom3", omap3_zoom_legacy_init, }, 379 { "ti,am3517-evm", am3517_evm_legacy_init, }, 380 #endif 381 #ifdef CONFIG_ARCH_OMAP4 382 { "ti,omap4-sdp", omap4_sdp_legacy_init, }, 383 { "ti,omap4-panda", omap4_panda_legacy_init, }, 384 { "variscite,var-dvk-om44", var_som_om44_legacy_init, }, 385 { "variscite,var-stk-om44", var_som_om44_legacy_init, }, 386 #endif 387 #ifdef CONFIG_SOC_AM33XX 388 { "ti,am335x-evmsk", am335x_evmsk_legacy_init, }, 389 #endif 390 #ifdef CONFIG_SOC_OMAP5 391 { "ti,omap5-uevm", omap5_uevm_legacy_init, }, 392 #endif 393 { /* sentinel */ }, 394 }; 395 396 static void pdata_quirks_check(struct pdata_init *quirks) 397 { 398 while (quirks->compatible) { 399 if (of_machine_is_compatible(quirks->compatible)) { 400 if (quirks->fn) 401 quirks->fn(); 402 break; 403 } 404 quirks++; 405 } 406 } 407 408 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table) 409 { 410 omap_sdrc_init(NULL, NULL); 411 pdata_quirks_check(auxdata_quirks); 412 of_platform_populate(NULL, omap_dt_match_table, 413 omap_auxdata_lookup, NULL); 414 pdata_quirks_check(pdata_quirks); 415 } 416