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 void __init nokia_n900_legacy_init(void) 230 { 231 hsmmc2_internal_input_clk(); 232 233 if (omap_type() == OMAP2_DEVICE_TYPE_SEC) { 234 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) { 235 pr_info("RX-51: Enabling ARM errata 430973 workaround\n"); 236 /* set IBE to 1 */ 237 rx51_secure_update_aux_cr(BIT(6), 0); 238 } else { 239 pr_warning("RX-51: Not enabling ARM errata 430973 workaround\n"); 240 pr_warning("Thumb binaries may crash randomly without this workaround\n"); 241 } 242 } 243 } 244 #endif /* CONFIG_ARCH_OMAP3 */ 245 246 #ifdef CONFIG_ARCH_OMAP4 247 static void __init omap4_sdp_legacy_init(void) 248 { 249 legacy_init_wl12xx(WL12XX_REFCLOCK_26, 250 WL12XX_TCXOCLOCK_26, 53); 251 } 252 253 static void __init omap4_panda_legacy_init(void) 254 { 255 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53); 256 } 257 #endif 258 259 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) 260 static struct iommu_platform_data omap4_iommu_pdata = { 261 .reset_name = "mmu_cache", 262 .assert_reset = omap_device_assert_hardreset, 263 .deassert_reset = omap_device_deassert_hardreset, 264 }; 265 #endif 266 267 #ifdef CONFIG_SOC_AM33XX 268 static void __init am335x_evmsk_legacy_init(void) 269 { 270 legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31); 271 } 272 #endif 273 274 #ifdef CONFIG_SOC_OMAP5 275 static void __init omap5_uevm_legacy_init(void) 276 { 277 } 278 #endif 279 280 static struct pcs_pdata pcs_pdata; 281 282 void omap_pcs_legacy_init(int irq, void (*rearm)(void)) 283 { 284 pcs_pdata.irq = irq; 285 pcs_pdata.rearm = rearm; 286 } 287 288 /* 289 * GPIOs for TWL are initialized by the I2C bus and need custom 290 * handing until DSS has device tree bindings. 291 */ 292 void omap_auxdata_legacy_init(struct device *dev) 293 { 294 if (dev->platform_data) 295 return; 296 297 if (strcmp("twl4030-gpio", dev_name(dev))) 298 return; 299 300 dev->platform_data = &twl_gpio_auxdata; 301 } 302 303 /* 304 * Few boards still need auxdata populated before we populate 305 * the dev entries in of_platform_populate(). 306 */ 307 static struct pdata_init auxdata_quirks[] __initdata = { 308 #ifdef CONFIG_SOC_OMAP2420 309 { "nokia,n800", omap2420_n8x0_legacy_init, }, 310 { "nokia,n810", omap2420_n8x0_legacy_init, }, 311 { "nokia,n810-wimax", omap2420_n8x0_legacy_init, }, 312 #endif 313 #ifdef CONFIG_ARCH_OMAP3 314 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, }, 315 #endif 316 { /* sentinel */ }, 317 }; 318 319 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = { 320 #ifdef CONFIG_MACH_NOKIA_N8X0 321 OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL), 322 #endif 323 #ifdef CONFIG_ARCH_OMAP3 324 OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata), 325 OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata), 326 OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata), 327 OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu", 328 &omap3_iommu_pdata), 329 /* Only on am3517 */ 330 OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL), 331 OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0", 332 &am35xx_emac_pdata), 333 #endif 334 #ifdef CONFIG_ARCH_OMAP4 335 OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata), 336 OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata), 337 #endif 338 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) 339 OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu", 340 &omap4_iommu_pdata), 341 OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu", 342 &omap4_iommu_pdata), 343 #endif 344 { /* sentinel */ }, 345 }; 346 347 /* 348 * Few boards still need to initialize some legacy devices with 349 * platform data until the drivers support device tree. 350 */ 351 static struct pdata_init pdata_quirks[] __initdata = { 352 #ifdef CONFIG_ARCH_OMAP3 353 { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, }, 354 { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, }, 355 { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, }, 356 { "nokia,omap3-n900", nokia_n900_legacy_init, }, 357 { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, 358 { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, 359 { "isee,omap3-igep0020", omap3_igep0020_legacy_init, }, 360 { "ti,omap3-evm-37xx", omap3_evm_legacy_init, }, 361 { "ti,omap3-zoom3", omap3_zoom_legacy_init, }, 362 { "ti,am3517-evm", am3517_evm_legacy_init, }, 363 #endif 364 #ifdef CONFIG_ARCH_OMAP4 365 { "ti,omap4-sdp", omap4_sdp_legacy_init, }, 366 { "ti,omap4-panda", omap4_panda_legacy_init, }, 367 #endif 368 #ifdef CONFIG_SOC_AM33XX 369 { "ti,am335x-evmsk", am335x_evmsk_legacy_init, }, 370 #endif 371 #ifdef CONFIG_SOC_OMAP5 372 { "ti,omap5-uevm", omap5_uevm_legacy_init, }, 373 #endif 374 { /* sentinel */ }, 375 }; 376 377 static void pdata_quirks_check(struct pdata_init *quirks) 378 { 379 while (quirks->compatible) { 380 if (of_machine_is_compatible(quirks->compatible)) { 381 if (quirks->fn) 382 quirks->fn(); 383 break; 384 } 385 quirks++; 386 } 387 } 388 389 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table) 390 { 391 omap_sdrc_init(NULL, NULL); 392 pdata_quirks_check(auxdata_quirks); 393 of_platform_populate(NULL, omap_dt_match_table, 394 omap_auxdata_lookup, NULL); 395 pdata_quirks_check(pdata_quirks); 396 } 397