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 /*
  35  * Create alias for USB host PHY clock.
  36  * Remove this when clock phandle can be provided via DT
  37  */
  38 static void __init __used legacy_init_ehci_clk(char *clkname)
  39 {
  40         int ret;
  41
  42         ret = clk_add_alias("main_clk", NULL, clkname, NULL);
  43         if (ret)
  44                 pr_err("%s:Failed to add main_clk alias to %s :%d\n",
  45                        __func__, clkname, ret);
  46 }
  47
  48 #if IS_ENABLED(CONFIG_WL12XX)
  49
  50 static struct wl12xx_platform_data wl12xx __initdata;
  51
  52 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  53                                              unsigned tcxo_clock,
  54                                              int gpio)
  55 {
  56         int res;
  57
  58         wl12xx.board_ref_clock = ref_clock;
  59         wl12xx.board_tcxo_clock = tcxo_clock;
  60         wl12xx.irq = gpio_to_irq(gpio);
  61
  62         res = wl12xx_set_platform_data(&wl12xx);
  63         if (res) {
  64                 pr_err("error setting wl12xx data: %d\n", res);
  65                 return;
  66         }
  67 }
  68 #else
  69 static inline void legacy_init_wl12xx(unsigned ref_clock,
  70                                       unsigned tcxo_clock,
  71                                       int gpio)
  72 {
  73 }
  74 #endif
  75
  76 #ifdef CONFIG_MACH_NOKIA_N8X0
  77 static void __init omap2420_n8x0_legacy_init(void)
  78 {
  79         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  80 }
  81 #else
  82 #define omap2420_n8x0_legacy_init       NULL
  83 #endif
  84
  85 #ifdef CONFIG_ARCH_OMAP3
  86 static void __init hsmmc2_internal_input_clk(void)
  87 {
  88         u32 reg;
  89
  90         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  91         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  92         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  93 }
  94
  95 static int omap3_sbc_t3730_twl_callback(struct device *dev,
  96                                            unsigned gpio,
  97                                            unsigned ngpio)
  98 {
  99         int res;
 100
 101         res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
 102                                "wlan pwr");
 103         if (res)
 104                 return res;
 105
 106         gpio_export(gpio, 0);
 107
 108         return 0;
 109 }
 110
 111 static void __init omap3_sbc_t3730_twl_init(void)
 112 {
 113         twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
 114 }
 115
 116 static void __init omap3_sbc_t3730_legacy_init(void)
 117 {
 118         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
 119         omap_ads7846_init(1, 57, 0, NULL);
 120 }
 121
 122 static void __init omap3_sbc_t3530_legacy_init(void)
 123 {
 124         omap_ads7846_init(1, 57, 0, NULL);
 125 }
 126
 127 static void __init omap3_igep0020_legacy_init(void)
 128 {
 129         omap3_igep2_display_init_of();
 130 }
 131
 132 static void __init omap3_evm_legacy_init(void)
 133 {
 134         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
 135 }
 136
 137 static void __init omap3_zoom_legacy_init(void)
 138 {
 139         legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
 140 }
 141
 142 static void am35xx_enable_emac_int(void)
 143 {
 144         u32 v;
 145
 146         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 147         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 148               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 149         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 150         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 151 }
 152
 153 static void am35xx_disable_emac_int(void)
 154 {
 155         u32 v;
 156
 157         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 158         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
 159         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 160         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 161 }
 162
 163 static struct emac_platform_data am35xx_emac_pdata = {
 164         .interrupt_enable       = am35xx_enable_emac_int,
 165         .interrupt_disable      = am35xx_disable_emac_int,
 166 };
 167
 168 static void __init am3517_evm_legacy_init(void)
 169 {
 170         u32 v;
 171
 172         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 173         v &= ~AM35XX_CPGMACSS_SW_RST;
 174         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 175         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 176 }
 177 #endif /* CONFIG_ARCH_OMAP3 */
 178
 179 #ifdef CONFIG_ARCH_OMAP4
 180 static void __init omap4_sdp_legacy_init(void)
 181 {
 182         omap_4430sdp_display_init_of();
 183         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
 184                            WL12XX_TCXOCLOCK_26, 53);
 185 }
 186
 187 static void __init omap4_panda_legacy_init(void)
 188 {
 189         omap4_panda_display_init_of();
 190         legacy_init_ehci_clk("auxclk3_ck");
 191         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 192 }
 193 #endif
 194
 195 #ifdef CONFIG_SOC_OMAP5
 196 static void __init omap5_uevm_legacy_init(void)
 197 {
 198         legacy_init_ehci_clk("auxclk1_ck");
 199 }
 200 #endif
 201
 202 static struct pcs_pdata pcs_pdata;
 203
 204 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 205 {
 206         pcs_pdata.irq = irq;
 207         pcs_pdata.rearm = rearm;
 208 }
 209
 210 /*
 211  * GPIOs for TWL are initialized by the I2C bus and need custom
 212  * handing until DSS has device tree bindings.
 213  */
 214 void omap_auxdata_legacy_init(struct device *dev)
 215 {
 216         if (dev->platform_data)
 217                 return;
 218
 219         if (strcmp("twl4030-gpio", dev_name(dev)))
 220                 return;
 221
 222         dev->platform_data = &twl_gpio_auxdata;
 223 }
 224
 225 /*
 226  * Few boards still need auxdata populated before we populate
 227  * the dev entries in of_platform_populate().
 228  */
 229 static struct pdata_init auxdata_quirks[] __initdata = {
 230 #ifdef CONFIG_SOC_OMAP2420
 231         { "nokia,n800", omap2420_n8x0_legacy_init, },
 232         { "nokia,n810", omap2420_n8x0_legacy_init, },
 233         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 234 #endif
 235 #ifdef CONFIG_ARCH_OMAP3
 236         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
 237 #endif
 238         { /* sentinel */ },
 239 };
 240
 241 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 242 #ifdef CONFIG_MACH_NOKIA_N8X0
 243         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 244 #endif
 245 #ifdef CONFIG_ARCH_OMAP3
 246         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 247         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 248         /* Only on am3517 */
 249         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 250         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 251                        &am35xx_emac_pdata),
 252 #endif
 253 #ifdef CONFIG_ARCH_OMAP4
 254         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 255         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 256 #endif
 257         { /* sentinel */ },
 258 };
 259
 260 /*
 261  * Few boards still need to initialize some legacy devices with
 262  * platform data until the drivers support device tree.
 263  */
 264 static struct pdata_init pdata_quirks[] __initdata = {
 265 #ifdef CONFIG_ARCH_OMAP3
 266         { "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
 267         { "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
 268         { "nokia,omap3-n900", hsmmc2_internal_input_clk, },
 269         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 270         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 271         { "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
 272         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 273         { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
 274         { "ti,am3517-evm", am3517_evm_legacy_init, },
 275 #endif
 276 #ifdef CONFIG_ARCH_OMAP4
 277         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 278         { "ti,omap4-panda", omap4_panda_legacy_init, },
 279 #endif
 280 #ifdef CONFIG_SOC_OMAP5
 281         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 282 #endif
 283         { /* sentinel */ },
 284 };
 285
 286 static void pdata_quirks_check(struct pdata_init *quirks)
 287 {
 288         while (quirks->compatible) {
 289                 if (of_machine_is_compatible(quirks->compatible)) {
 290                         if (quirks->fn)
 291                                 quirks->fn();
 292                         break;
 293                 }
 294                 quirks++;
 295         }
 296 }
 297
 298 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
 299 {
 300         omap_sdrc_init(NULL, NULL);
 301         pdata_quirks_check(auxdata_quirks);
 302         of_platform_populate(NULL, omap_dt_match_table,
 303                              omap_auxdata_lookup, NULL);
 304         pdata_quirks_check(pdata_quirks);
 305 }