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/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-secure.h"
  27 #include "soc.h"
  28 #include "omap_device.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_OMAP_IOMMU)
  39 int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
  40                                     u8 *pwrst);
  41 #else
  42 static inline int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev,
  43                                                   bool request, u8 *pwrst)
  44 {
  45         return 0;
  46 }
  47 #endif
  48
  49 #if IS_ENABLED(CONFIG_WL12XX)
  50
  51 static struct wl12xx_platform_data wl12xx __initdata;
  52
  53 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  54                                              unsigned tcxo_clock,
  55                                              int gpio)
  56 {
  57         int res;
  58
  59         wl12xx.board_ref_clock = ref_clock;
  60         wl12xx.board_tcxo_clock = tcxo_clock;
  61         wl12xx.irq = gpio_to_irq(gpio);
  62
  63         res = wl12xx_set_platform_data(&wl12xx);
  64         if (res) {
  65                 pr_err("error setting wl12xx data: %d\n", res);
  66                 return;
  67         }
  68 }
  69 #else
  70 static inline void legacy_init_wl12xx(unsigned ref_clock,
  71                                       unsigned tcxo_clock,
  72                                       int gpio)
  73 {
  74 }
  75 #endif
  76
  77 #ifdef CONFIG_MACH_NOKIA_N8X0
  78 static void __init omap2420_n8x0_legacy_init(void)
  79 {
  80         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  81 }
  82 #else
  83 #define omap2420_n8x0_legacy_init       NULL
  84 #endif
  85
  86 #ifdef CONFIG_ARCH_OMAP3
  87 static void __init hsmmc2_internal_input_clk(void)
  88 {
  89         u32 reg;
  90
  91         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  92         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  93         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  94 }
  95
  96 static struct iommu_platform_data omap3_iommu_pdata = {
  97         .reset_name = "mmu",
  98         .assert_reset = omap_device_assert_hardreset,
  99         .deassert_reset = omap_device_deassert_hardreset,
 100         .device_enable = omap_device_enable,
 101         .device_idle = omap_device_idle,
 102 };
 103
 104 static struct iommu_platform_data omap3_iommu_isp_pdata = {
 105         .device_enable = omap_device_enable,
 106         .device_idle = omap_device_idle,
 107 };
 108
 109 static int omap3_sbc_t3730_twl_callback(struct device *dev,
 110                                            unsigned gpio,
 111                                            unsigned ngpio)
 112 {
 113         int res;
 114
 115         res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
 116                                "wlan rst");
 117         if (res)
 118                 return res;
 119
 120         gpio_export(gpio, 0);
 121
 122         return 0;
 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         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
 133         omap_ads7846_init(1, 57, 0, NULL);
 134 }
 135
 136 static void __init omap3_igep0020_legacy_init(void)
 137 {
 138 }
 139
 140 static void __init omap3_evm_legacy_init(void)
 141 {
 142         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
 143 }
 144
 145 static void __init omap3_zoom_legacy_init(void)
 146 {
 147         legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
 148 }
 149
 150 static void am35xx_enable_emac_int(void)
 151 {
 152         u32 v;
 153
 154         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 155         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 156               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 157         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 158         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 159 }
 160
 161 static void am35xx_disable_emac_int(void)
 162 {
 163         u32 v;
 164
 165         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 166         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
 167         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 168         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 169 }
 170
 171 static struct emac_platform_data am35xx_emac_pdata = {
 172         .interrupt_enable       = am35xx_enable_emac_int,
 173         .interrupt_disable      = am35xx_disable_emac_int,
 174 };
 175
 176 static void __init am3517_evm_legacy_init(void)
 177 {
 178         u32 v;
 179
 180         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 181         v &= ~AM35XX_CPGMACSS_SW_RST;
 182         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 183         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 184 }
 185
 186 static void __init nokia_n900_legacy_init(void)
 187 {
 188         hsmmc2_internal_input_clk();
 189
 190         if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
 191                 if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
 192                         pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
 193                         /* set IBE to 1 */
 194                         rx51_secure_update_aux_cr(BIT(6), 0);
 195                 } else {
 196                         pr_warning("RX-51: Not enabling ARM errata 430973 workaround\n");
 197                         pr_warning("Thumb binaries may crash randomly without this workaround\n");
 198                 }
 199         }
 200 }
 201 #endif /* CONFIG_ARCH_OMAP3 */
 202
 203 #ifdef CONFIG_ARCH_OMAP4
 204 static void __init omap4_sdp_legacy_init(void)
 205 {
 206         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
 207                            WL12XX_TCXOCLOCK_26, 53);
 208 }
 209
 210 static void __init omap4_panda_legacy_init(void)
 211 {
 212         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 213 }
 214 #endif
 215
 216 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
 217         defined(CONFIG_SOC_DRA7XX)
 218 static struct iommu_platform_data omap4_iommu_pdata = {
 219         .reset_name = "mmu_cache",
 220         .assert_reset = omap_device_assert_hardreset,
 221         .deassert_reset = omap_device_deassert_hardreset,
 222         .device_enable = omap_device_enable,
 223         .device_idle = omap_device_idle,
 224 };
 225 #endif
 226
 227 #ifdef CONFIG_SOC_DRA7XX
 228 static struct iommu_platform_data dra7_dsp_mmu_edma_pdata = {
 229         .device_enable = omap_device_enable,
 230         .device_idle = omap_device_idle,
 231 };
 232
 233 static struct iommu_platform_data dra7_ipu1_iommu_pdata = {
 234         .reset_name = "mmu_cache",
 235         .assert_reset = omap_device_assert_hardreset,
 236         .deassert_reset = omap_device_deassert_hardreset,
 237         .device_enable = omap_device_enable,
 238         .device_idle = omap_device_idle,
 239         .set_pwrdm_constraint = omap_iommu_set_pwrdm_constraint,
 240 };
 241 #endif
 242
 243 #ifdef CONFIG_SOC_AM33XX
 244 static void __init am335x_evmsk_legacy_init(void)
 245 {
 246         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31);
 247 }
 248 #endif
 249
 250 #ifdef CONFIG_SOC_OMAP5
 251 static void __init omap5_uevm_legacy_init(void)
 252 {
 253 }
 254 #endif
 255
 256 static struct pcs_pdata pcs_pdata;
 257
 258 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 259 {
 260         pcs_pdata.irq = irq;
 261         pcs_pdata.rearm = rearm;
 262 }
 263
 264 /*
 265  * GPIOs for TWL are initialized by the I2C bus and need custom
 266  * handing until DSS has device tree bindings.
 267  */
 268 void omap_auxdata_legacy_init(struct device *dev)
 269 {
 270         if (dev->platform_data)
 271                 return;
 272
 273         if (strcmp("twl4030-gpio", dev_name(dev)))
 274                 return;
 275
 276         dev->platform_data = &twl_gpio_auxdata;
 277 }
 278
 279 /*
 280  * Few boards still need auxdata populated before we populate
 281  * the dev entries in of_platform_populate().
 282  */
 283 static struct pdata_init auxdata_quirks[] __initdata = {
 284 #ifdef CONFIG_SOC_OMAP2420
 285         { "nokia,n800", omap2420_n8x0_legacy_init, },
 286         { "nokia,n810", omap2420_n8x0_legacy_init, },
 287         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 288 #endif
 289 #ifdef CONFIG_ARCH_OMAP3
 290         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
 291 #endif
 292         { /* sentinel */ },
 293 };
 294
 295 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 296 #ifdef CONFIG_MACH_NOKIA_N8X0
 297         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 298 #endif
 299 #ifdef CONFIG_ARCH_OMAP3
 300         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 301         OF_DEV_AUXDATA("ti,omap3-padconf", 0x480025a0, "480025a0.pinmux", &pcs_pdata),
 302         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 303         OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 304                        &omap3_iommu_pdata),
 305         OF_DEV_AUXDATA("ti,omap2-iommu", 0x480bd400, "480bd400.mmu",
 306                        &omap3_iommu_isp_pdata),
 307         /* Only on am3517 */
 308         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 309         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 310                        &am35xx_emac_pdata),
 311 #endif
 312 #ifdef CONFIG_SOC_AM43XX
 313         OF_DEV_AUXDATA("ti,am437-padconf", 0x44e10800, "44e10800.pinmux", &pcs_pdata),
 314 #endif
 315 #ifdef CONFIG_ARCH_OMAP4
 316         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 317         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 318 #endif
 319 #ifdef CONFIG_SOC_OMAP5
 320         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4a002840, "4a002840.pinmux", &pcs_pdata),
 321         OF_DEV_AUXDATA("ti,omap5-padconf", 0x4ae0c840, "4ae0c840.pinmux", &pcs_pdata),
 322 #endif
 323 #if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
 324         OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
 325                        &omap4_iommu_pdata),
 326         OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
 327                        &omap4_iommu_pdata),
 328 #endif
 329 #ifdef CONFIG_SOC_DRA7XX
 330         OF_DEV_AUXDATA("ti,dra7-padconf", 0x4a003400, "4a003400.pinmux", &pcs_pdata),
 331         OF_DEV_AUXDATA("ti,dra7-iommu", 0x40d01000, "40d01000.mmu",
 332                        &omap4_iommu_pdata),
 333         OF_DEV_AUXDATA("ti,dra7-iommu", 0x40d02000, "40d02000.mmu",
 334                        &dra7_dsp_mmu_edma_pdata),
 335         OF_DEV_AUXDATA("ti,dra7-iommu", 0x41501000, "41501000.mmu",
 336                        &omap4_iommu_pdata),
 337         OF_DEV_AUXDATA("ti,dra7-iommu", 0x41502000, "41502000.mmu",
 338                        &dra7_dsp_mmu_edma_pdata),
 339         OF_DEV_AUXDATA("ti,dra7-iommu", 0x55082000, "55082000.mmu",
 340                        &omap4_iommu_pdata),
 341         OF_DEV_AUXDATA("ti,dra7-iommu", 0x58882000, "58882000.mmu",
 342                        &dra7_ipu1_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-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", omap3_igep0020_legacy_init, },
 358         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 359         { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
 360         { "ti,am3517-evm", am3517_evm_legacy_init, },
 361 #endif
 362 #ifdef CONFIG_ARCH_OMAP4
 363         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 364         { "ti,omap4-panda", omap4_panda_legacy_init, },
 365 #endif
 366 #ifdef CONFIG_SOC_AM33XX
 367         { "ti,am335x-evmsk", am335x_evmsk_legacy_init, },
 368 #endif
 369 #ifdef CONFIG_SOC_OMAP5
 370         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 371 #endif
 372         { /* sentinel */ },
 373 };
 374
 375 static void pdata_quirks_check(struct pdata_init *quirks)
 376 {
 377         while (quirks->compatible) {
 378                 if (of_machine_is_compatible(quirks->compatible)) {
 379                         if (quirks->fn)
 380                                 quirks->fn();
 381                         break;
 382                 }
 383                 quirks++;
 384         }
 385 }
 386
 387 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
 388 {
 389         omap_sdrc_init(NULL, NULL);
 390         pdata_quirks_check(auxdata_quirks);
 391         of_platform_populate(NULL, omap_dt_match_table,
 392                              omap_auxdata_lookup, NULL);
 393         pdata_quirks_check(pdata_quirks);
 394 }