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
  20 #include "am35xx.h"
  21 #include "common.h"
  22 #include "common-board-devices.h"
  23 #include "dss-common.h"
  24 #include "control.h"
  25
  26 struct pdata_init {
  27         const char *compatible;
  28         void (*fn)(void);
  29 };
  30
  31 struct of_dev_auxdata omap_auxdata_lookup[];
  32 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
  33
  34 #if IS_ENABLED(CONFIG_WL12XX)
  35
  36 static struct wl12xx_platform_data wl12xx __initdata;
  37
  38 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  39                                              unsigned tcxo_clock,
  40                                              int gpio)
  41 {
  42         int res;
  43
  44         wl12xx.board_ref_clock = ref_clock;
  45         wl12xx.board_tcxo_clock = tcxo_clock;
  46         wl12xx.irq = gpio_to_irq(gpio);
  47
  48         res = wl12xx_set_platform_data(&wl12xx);
  49         if (res) {
  50                 pr_err("error setting wl12xx data: %d\n", res);
  51                 return;
  52         }
  53 }
  54 #else
  55 static inline void legacy_init_wl12xx(unsigned ref_clock,
  56                                       unsigned tcxo_clock,
  57                                       int gpio)
  58 {
  59 }
  60 #endif
  61
  62 #ifdef CONFIG_MACH_NOKIA_N8X0
  63 static void __init omap2420_n8x0_legacy_init(void)
  64 {
  65         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  66 }
  67 #else
  68 #define omap2420_n8x0_legacy_init       NULL
  69 #endif
  70
  71 #ifdef CONFIG_ARCH_OMAP3
  72 static void __init hsmmc2_internal_input_clk(void)
  73 {
  74         u32 reg;
  75
  76         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  77         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  78         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  79 }
  80
  81 static int omap3_sbc_t3730_twl_callback(struct device *dev,
  82                                            unsigned gpio,
  83                                            unsigned ngpio)
  84 {
  85         int res;
  86
  87         res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
  88                                "wlan pwr");
  89         if (res)
  90                 return res;
  91
  92         gpio_export(gpio, 0);
  93
  94         return 0;
  95 }
  96
  97 static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
  98 {
  99         int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);
 100
 101         if (err) {
 102                 pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
 103                         hub_name, err);
 104                 return;
 105         }
 106
 107         gpio_export(gpio, 0);
 108
 109         udelay(10);
 110         gpio_set_value(gpio, 1);
 111         msleep(1);
 112 }
 113
 114 static void __init omap3_sbc_t3730_twl_init(void)
 115 {
 116         twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
 117 }
 118
 119 static void __init omap3_sbc_t3730_legacy_init(void)
 120 {
 121         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 122         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
 123         omap_ads7846_init(1, 57, 0, NULL);
 124 }
 125
 126 static void __init omap3_sbc_t3530_legacy_init(void)
 127 {
 128         omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
 129         omap_ads7846_init(1, 57, 0, NULL);
 130 }
 131
 132 static void __init omap3_igep0020_legacy_init(void)
 133 {
 134         omap3_igep2_display_init_of();
 135 }
 136
 137 static void __init omap3_evm_legacy_init(void)
 138 {
 139         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
 140 }
 141
 142 static void __init omap3_zoom_legacy_init(void)
 143 {
 144         legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
 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         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 145);
 212         omap_ads7846_init(1, 57, 0, NULL);
 213 }
 214
 215 static void __init am3517_evm_legacy_init(void)
 216 {
 217         am35xx_emac_reset();
 218 }
 219 #endif /* CONFIG_ARCH_OMAP3 */
 220
 221 #ifdef CONFIG_ARCH_OMAP4
 222 static void __init omap4_sdp_legacy_init(void)
 223 {
 224         omap_4430sdp_display_init_of();
 225         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
 226                            WL12XX_TCXOCLOCK_26, 53);
 227 }
 228
 229 static void __init omap4_panda_legacy_init(void)
 230 {
 231         omap4_panda_display_init_of();
 232         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 233 }
 234 #endif
 235
 236 #ifdef CONFIG_SOC_AM33XX
 237 static void __init am335x_evmsk_legacy_init(void)
 238 {
 239         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 31);
 240 }
 241 #endif
 242
 243 #ifdef CONFIG_SOC_OMAP5
 244 static void __init omap5_uevm_legacy_init(void)
 245 {
 246 }
 247 #endif
 248
 249 static struct pcs_pdata pcs_pdata;
 250
 251 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 252 {
 253         pcs_pdata.irq = irq;
 254         pcs_pdata.rearm = rearm;
 255 }
 256
 257 /*
 258  * GPIOs for TWL are initialized by the I2C bus and need custom
 259  * handing until DSS has device tree bindings.
 260  */
 261 void omap_auxdata_legacy_init(struct device *dev)
 262 {
 263         if (dev->platform_data)
 264                 return;
 265
 266         if (strcmp("twl4030-gpio", dev_name(dev)))
 267                 return;
 268
 269         dev->platform_data = &twl_gpio_auxdata;
 270 }
 271
 272 /*
 273  * Few boards still need auxdata populated before we populate
 274  * the dev entries in of_platform_populate().
 275  */
 276 static struct pdata_init auxdata_quirks[] __initdata = {
 277 #ifdef CONFIG_SOC_OMAP2420
 278         { "nokia,n800", omap2420_n8x0_legacy_init, },
 279         { "nokia,n810", omap2420_n8x0_legacy_init, },
 280         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 281 #endif
 282 #ifdef CONFIG_ARCH_OMAP3
 283         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
 284 #endif
 285         { /* sentinel */ },
 286 };
 287
 288 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 289 #ifdef CONFIG_MACH_NOKIA_N8X0
 290         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 291 #endif
 292 #ifdef CONFIG_ARCH_OMAP3
 293         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 294         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 295         /* Only on am3517 */
 296         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 297         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 298                        &am35xx_emac_pdata),
 299 #endif
 300 #ifdef CONFIG_ARCH_OMAP4
 301         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 302         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 303 #endif
 304         { /* sentinel */ },
 305 };
 306
 307 /*
 308  * Few boards still need to initialize some legacy devices with
 309  * platform data until the drivers support device tree.
 310  */
 311 static struct pdata_init pdata_quirks[] __initdata = {
 312 #ifdef CONFIG_ARCH_OMAP3
 313         { "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
 314         { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
 315         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
 316         { "nokia,omap3-n900", hsmmc2_internal_input_clk, },
 317         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 318         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 319         { "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
 320         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 321         { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
 322         { "ti,am3517-evm", am3517_evm_legacy_init, },
 323 #endif
 324 #ifdef CONFIG_ARCH_OMAP4
 325         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 326         { "ti,omap4-panda", omap4_panda_legacy_init, },
 327 #endif
 328 #ifdef CONFIG_SOC_AM33XX
 329         { "ti,am335x-evmsk", am335x_evmsk_legacy_init, },
 330 #endif
 331 #ifdef CONFIG_SOC_OMAP5
 332         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 333 #endif
 334         { /* sentinel */ },
 335 };
 336
 337 static void pdata_quirks_check(struct pdata_init *quirks)
 338 {
 339         while (quirks->compatible) {
 340                 if (of_machine_is_compatible(quirks->compatible)) {
 341                         if (quirks->fn)
 342                                 quirks->fn();
 343                         break;
 344                 }
 345                 quirks++;
 346         }
 347 }
 348
 349 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
 350 {
 351         omap_sdrc_init(NULL, NULL);
 352         pdata_quirks_check(auxdata_quirks);
 353         of_platform_populate(NULL, omap_dt_match_table,
 354                              omap_auxdata_lookup, NULL);
 355         pdata_quirks_check(pdata_quirks);
 356 }