arch/arm/mach-omap2/devices.c

   1 /*
   2  * linux/arch/arm/mach-omap2/devices.c
   3  *
   4  * OMAP2 platform device setup/initialization
   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 as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11 #include <linux/gpio.h>
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16 #include <linux/clk.h>
  17 #include <linux/err.h>
  18 #include <linux/slab.h>
  19 #include <linux/of.h>
  20 #include <linux/pinctrl/machine.h>
  21 #include <linux/platform_data/mailbox-omap.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/map.h>
  25
  26 #include <linux/omap-dma.h>
  27
  28 #include "iomap.h"
  29 #include "omap_hwmod.h"
  30 #include "omap_device.h"
  31
  32 #include "soc.h"
  33 #include "common.h"
  34 #include "mux.h"
  35 #include "control.h"
  36 #include "devices.h"
  37 #include "display.h"
  38
  39 #define L3_MODULES_MAX_LEN 12
  40 #define L3_MODULES 3
  41
  42 static int __init omap3_l3_init(void)
  43 {
  44         struct omap_hwmod *oh;
  45         struct platform_device *pdev;
  46         char oh_name[L3_MODULES_MAX_LEN];
  47
  48         /*
  49          * To avoid code running on other OMAPs in
  50          * multi-omap builds
  51          */
  52         if (!(cpu_is_omap34xx()) || of_have_populated_dt())
  53                 return -ENODEV;
  54
  55         snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main");
  56
  57         oh = omap_hwmod_lookup(oh_name);
  58
  59         if (!oh)
  60                 pr_err("could not look up %s\n", oh_name);
  61
  62         pdev = omap_device_build("omap_l3_smx", 0, oh, NULL, 0);
  63
  64         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
  65
  66         return PTR_ERR_OR_ZERO(pdev);
  67 }
  68 omap_postcore_initcall(omap3_l3_init);
  69
  70 #if defined(CONFIG_IOMMU_API)
  71
  72 #include <linux/platform_data/iommu-omap.h>
  73
  74 static struct resource omap3isp_resources[] = {
  75         {
  76                 .start          = OMAP3430_ISP_BASE,
  77                 .end            = OMAP3430_ISP_BASE + 0x12fc,
  78                 .flags          = IORESOURCE_MEM,
  79         },
  80         {
  81                 .start          = OMAP3430_ISP_BASE2,
  82                 .end            = OMAP3430_ISP_BASE2 + 0x0600,
  83                 .flags          = IORESOURCE_MEM,
  84         },
  85         {
  86                 .start          = 24 + OMAP_INTC_START,
  87                 .flags          = IORESOURCE_IRQ,
  88         }
  89 };
  90
  91 static struct platform_device omap3isp_device = {
  92         .name           = "omap3isp",
  93         .id             = -1,
  94         .num_resources  = ARRAY_SIZE(omap3isp_resources),
  95         .resource       = omap3isp_resources,
  96 };
  97
  98 static struct omap_iommu_arch_data omap3_isp_iommu = {
  99         .name = "mmu_isp",
 100 };
 101
 102 int omap3_init_camera(struct isp_platform_data *pdata)
 103 {
 104         if (of_have_populated_dt())
 105                 omap3_isp_iommu.name = "480bd400.mmu";
 106
 107         omap3isp_device.dev.platform_data = pdata;
 108         omap3isp_device.dev.archdata.iommu = &omap3_isp_iommu;
 109
 110         return platform_device_register(&omap3isp_device);
 111 }
 112
 113 #else /* !CONFIG_IOMMU_API */
 114
 115 int omap3_init_camera(struct isp_platform_data *pdata)
 116 {
 117         return 0;
 118 }
 119
 120 #endif
 121
 122 #if defined(CONFIG_OMAP2PLUS_MBOX) || defined(CONFIG_OMAP2PLUS_MBOX_MODULE)
 123 static inline void __init omap_init_mbox(void)
 124 {
 125         struct omap_hwmod *oh;
 126         struct platform_device *pdev;
 127         struct omap_mbox_pdata *pdata;
 128
 129         oh = omap_hwmod_lookup("mailbox");
 130         if (!oh) {
 131                 pr_err("%s: unable to find hwmod\n", __func__);
 132                 return;
 133         }
 134         if (!oh->dev_attr) {
 135                 pr_err("%s: hwmod doesn't have valid attrs\n", __func__);
 136                 return;
 137         }
 138
 139         pdata = (struct omap_mbox_pdata *)oh->dev_attr;
 140         pdev = omap_device_build("omap-mailbox", -1, oh, pdata, sizeof(*pdata));
 141         WARN(IS_ERR(pdev), "%s: could not build device, err %ld\n",
 142                                                 __func__, PTR_ERR(pdev));
 143 }
 144 #else
 145 static inline void omap_init_mbox(void) { }
 146 #endif /* CONFIG_OMAP2PLUS_MBOX */
 147
 148 static inline void omap_init_sti(void) {}
 149
 150 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 151
 152 static struct platform_device omap_pcm = {
 153         .name   = "omap-pcm-audio",
 154         .id     = -1,
 155 };
 156
 157 static void omap_init_audio(void)
 158 {
 159         platform_device_register(&omap_pcm);
 160 }
 161
 162 #else
 163 static inline void omap_init_audio(void) {}
 164 #endif
 165
 166 #if defined(CONFIG_SPI_OMAP24XX) || defined(CONFIG_SPI_OMAP24XX_MODULE)
 167
 168 #include <linux/platform_data/spi-omap2-mcspi.h>
 169
 170 static int __init omap_mcspi_init(struct omap_hwmod *oh, void *unused)
 171 {
 172         struct platform_device *pdev;
 173         char *name = "omap2_mcspi";
 174         struct omap2_mcspi_platform_config *pdata;
 175         static int spi_num;
 176         struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr;
 177
 178         pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
 179         if (!pdata) {
 180                 pr_err("Memory allocation for McSPI device failed\n");
 181                 return -ENOMEM;
 182         }
 183
 184         pdata->num_cs = mcspi_attrib->num_chipselect;
 185         switch (oh->class->rev) {
 186         case OMAP2_MCSPI_REV:
 187         case OMAP3_MCSPI_REV:
 188                         pdata->regs_offset = 0;
 189                         break;
 190         case OMAP4_MCSPI_REV:
 191                         pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET;
 192                         break;
 193         default:
 194                         pr_err("Invalid McSPI Revision value\n");
 195                         kfree(pdata);
 196                         return -EINVAL;
 197         }
 198
 199         spi_num++;
 200         pdev = omap_device_build(name, spi_num, oh, pdata, sizeof(*pdata));
 201         WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s\n",
 202                                 name, oh->name);
 203         kfree(pdata);
 204         return 0;
 205 }
 206
 207 static void omap_init_mcspi(void)
 208 {
 209         omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL);
 210 }
 211
 212 #else
 213 static inline void omap_init_mcspi(void) {}
 214 #endif
 215
 216 /**
 217  * omap_init_rng - bind the RNG hwmod to the RNG omap_device
 218  *
 219  * Bind the RNG hwmod to the RNG omap_device.  No return value.
 220  */
 221 static void omap_init_rng(void)
 222 {
 223         struct omap_hwmod *oh;
 224         struct platform_device *pdev;
 225
 226         oh = omap_hwmod_lookup("rng");
 227         if (!oh)
 228                 return;
 229
 230         pdev = omap_device_build("omap_rng", -1, oh, NULL, 0);
 231         WARN(IS_ERR(pdev), "Can't build omap_device for omap_rng\n");
 232 }
 233
 234 static void __init omap_init_sham(void)
 235 {
 236         struct omap_hwmod *oh;
 237         struct platform_device *pdev;
 238
 239         oh = omap_hwmod_lookup("sham");
 240         if (!oh)
 241                 return;
 242
 243         pdev = omap_device_build("omap-sham", -1, oh, NULL, 0);
 244         WARN(IS_ERR(pdev), "Can't build omap_device for omap-sham\n");
 245 }
 246
 247 static void __init omap_init_aes(void)
 248 {
 249         struct omap_hwmod *oh;
 250         struct platform_device *pdev;
 251
 252         oh = omap_hwmod_lookup("aes");
 253         if (!oh)
 254                 return;
 255
 256         pdev = omap_device_build("omap-aes", -1, oh, NULL, 0);
 257         WARN(IS_ERR(pdev), "Can't build omap_device for omap-aes\n");
 258 }
 259
 260 /*-------------------------------------------------------------------------*/
 261
 262 #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \
 263         defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE)
 264 #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
 265 static struct resource omap_vout_resource[3 - CONFIG_FB_OMAP2_NUM_FBS] = {
 266 };
 267 #else
 268 static struct resource omap_vout_resource[2] = {
 269 };
 270 #endif
 271
 272 static struct platform_device omap_vout_device = {
 273         .name           = "omap_vout",
 274         .num_resources  = ARRAY_SIZE(omap_vout_resource),
 275         .resource       = &omap_vout_resource[0],
 276         .id             = -1,
 277 };
 278
 279 int __init omap_init_vout(void)
 280 {
 281         return platform_device_register(&omap_vout_device);
 282 }
 283 #else
 284 int __init omap_init_vout(void) { return 0; }
 285 #endif
 286
 287 /*-------------------------------------------------------------------------*/
 288
 289 static int __init omap2_init_devices(void)
 290 {
 291         /* Enable dummy states for those platforms without pinctrl support */
 292         if (!of_have_populated_dt())
 293                 pinctrl_provide_dummies();
 294
 295         /*
 296          * please keep these calls, and their implementations above,
 297          * in alphabetical order so they're easier to sort through.
 298          */
 299         omap_init_audio();
 300         /* If dtb is there, the devices will be created dynamically */
 301         if (!of_have_populated_dt()) {
 302                 omap_init_mbox();
 303                 omap_init_mcspi();
 304                 omap_init_sham();
 305                 omap_init_aes();
 306                 omap_init_rng();
 307         }
 308         omap_init_sti();
 309
 310         return 0;
 311 }
 312 omap_arch_initcall(omap2_init_devices);
 313
 314 static int __init omap_gpmc_init(void)
 315 {
 316         struct omap_hwmod *oh;
 317         struct platform_device *pdev;
 318         char *oh_name = "gpmc";
 319
 320         /*
 321          * if the board boots up with a populated DT, do not
 322          * manually add the device from this initcall
 323          */
 324         if (of_have_populated_dt())
 325                 return -ENODEV;
 326
 327         oh = omap_hwmod_lookup(oh_name);
 328         if (!oh) {
 329                 pr_err("Could not look up %s\n", oh_name);
 330                 return -ENODEV;
 331         }
 332
 333         pdev = omap_device_build("omap-gpmc", -1, oh, NULL, 0);
 334         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
 335
 336         return PTR_ERR_OR_ZERO(pdev);
 337 }
 338 omap_postcore_initcall(omap_gpmc_init);