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 "display.h"
  37
  38 #define L3_MODULES_MAX_LEN 12
  39 #define L3_MODULES 3
  40
  41 static int __init omap3_l3_init(void)
  42 {
  43         struct omap_hwmod *oh;
  44         struct platform_device *pdev;
  45         char oh_name[L3_MODULES_MAX_LEN];
  46
  47         /*
  48          * To avoid code running on other OMAPs in
  49          * multi-omap builds
  50          */
  51         if (!(cpu_is_omap34xx()) || of_have_populated_dt())
  52                 return -ENODEV;
  53
  54         snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main");
  55
  56         oh = omap_hwmod_lookup(oh_name);
  57
  58         if (!oh)
  59                 pr_err("could not look up %s\n", oh_name);
  60
  61         pdev = omap_device_build("omap_l3_smx", 0, oh, NULL, 0);
  62
  63         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
  64
  65         return PTR_ERR_OR_ZERO(pdev);
  66 }
  67 omap_postcore_initcall(omap3_l3_init);
  68
  69 #if defined(CONFIG_OMAP2PLUS_MBOX) || defined(CONFIG_OMAP2PLUS_MBOX_MODULE)
  70 static inline void __init omap_init_mbox(void)
  71 {
  72         struct omap_hwmod *oh;
  73         struct platform_device *pdev;
  74         struct omap_mbox_pdata *pdata;
  75
  76         oh = omap_hwmod_lookup("mailbox");
  77         if (!oh) {
  78                 pr_err("%s: unable to find hwmod\n", __func__);
  79                 return;
  80         }
  81         if (!oh->dev_attr) {
  82                 pr_err("%s: hwmod doesn't have valid attrs\n", __func__);
  83                 return;
  84         }
  85
  86         pdata = (struct omap_mbox_pdata *)oh->dev_attr;
  87         pdev = omap_device_build("omap-mailbox", -1, oh, pdata, sizeof(*pdata));
  88         WARN(IS_ERR(pdev), "%s: could not build device, err %ld\n",
  89                                                 __func__, PTR_ERR(pdev));
  90 }
  91 #else
  92 static inline void omap_init_mbox(void) { }
  93 #endif /* CONFIG_OMAP2PLUS_MBOX */
  94
  95 static inline void omap_init_sti(void) {}
  96
  97 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
  98
  99 static struct platform_device omap_pcm = {
 100         .name   = "omap-pcm-audio",
 101         .id     = -1,
 102 };
 103
 104 static void omap_init_audio(void)
 105 {
 106         platform_device_register(&omap_pcm);
 107 }
 108
 109 #else
 110 static inline void omap_init_audio(void) {}
 111 #endif
 112
 113 #if defined(CONFIG_SPI_OMAP24XX) || defined(CONFIG_SPI_OMAP24XX_MODULE)
 114
 115 #include <linux/platform_data/spi-omap2-mcspi.h>
 116
 117 static int __init omap_mcspi_init(struct omap_hwmod *oh, void *unused)
 118 {
 119         struct platform_device *pdev;
 120         char *name = "omap2_mcspi";
 121         struct omap2_mcspi_platform_config *pdata;
 122         static int spi_num;
 123         struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr;
 124
 125         pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
 126         if (!pdata) {
 127                 pr_err("Memory allocation for McSPI device failed\n");
 128                 return -ENOMEM;
 129         }
 130
 131         pdata->num_cs = mcspi_attrib->num_chipselect;
 132         switch (oh->class->rev) {
 133         case OMAP2_MCSPI_REV:
 134         case OMAP3_MCSPI_REV:
 135                         pdata->regs_offset = 0;
 136                         break;
 137         case OMAP4_MCSPI_REV:
 138                         pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET;
 139                         break;
 140         default:
 141                         pr_err("Invalid McSPI Revision value\n");
 142                         kfree(pdata);
 143                         return -EINVAL;
 144         }
 145
 146         spi_num++;
 147         pdev = omap_device_build(name, spi_num, oh, pdata, sizeof(*pdata));
 148         WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s\n",
 149                                 name, oh->name);
 150         kfree(pdata);
 151         return 0;
 152 }
 153
 154 static void omap_init_mcspi(void)
 155 {
 156         omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL);
 157 }
 158
 159 #else
 160 static inline void omap_init_mcspi(void) {}
 161 #endif
 162
 163 /**
 164  * omap_init_rng - bind the RNG hwmod to the RNG omap_device
 165  *
 166  * Bind the RNG hwmod to the RNG omap_device.  No return value.
 167  */
 168 static void omap_init_rng(void)
 169 {
 170         struct omap_hwmod *oh;
 171         struct platform_device *pdev;
 172
 173         oh = omap_hwmod_lookup("rng");
 174         if (!oh)
 175                 return;
 176
 177         pdev = omap_device_build("omap_rng", -1, oh, NULL, 0);
 178         WARN(IS_ERR(pdev), "Can't build omap_device for omap_rng\n");
 179 }
 180
 181 static void __init omap_init_sham(void)
 182 {
 183         struct omap_hwmod *oh;
 184         struct platform_device *pdev;
 185
 186         oh = omap_hwmod_lookup("sham");
 187         if (!oh)
 188                 return;
 189
 190         pdev = omap_device_build("omap-sham", -1, oh, NULL, 0);
 191         WARN(IS_ERR(pdev), "Can't build omap_device for omap-sham\n");
 192 }
 193
 194 static void __init omap_init_aes(void)
 195 {
 196         struct omap_hwmod *oh;
 197         struct platform_device *pdev;
 198
 199         oh = omap_hwmod_lookup("aes");
 200         if (!oh)
 201                 return;
 202
 203         pdev = omap_device_build("omap-aes", -1, oh, NULL, 0);
 204         WARN(IS_ERR(pdev), "Can't build omap_device for omap-aes\n");
 205 }
 206
 207 /*-------------------------------------------------------------------------*/
 208
 209 #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \
 210         defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE)
 211 #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
 212 static struct resource omap_vout_resource[3 - CONFIG_FB_OMAP2_NUM_FBS] = {
 213 };
 214 #else
 215 static struct resource omap_vout_resource[2] = {
 216 };
 217 #endif
 218
 219 static struct platform_device omap_vout_device = {
 220         .name           = "omap_vout",
 221         .num_resources  = ARRAY_SIZE(omap_vout_resource),
 222         .resource       = &omap_vout_resource[0],
 223         .id             = -1,
 224 };
 225
 226 int __init omap_init_vout(void)
 227 {
 228         return platform_device_register(&omap_vout_device);
 229 }
 230 #else
 231 int __init omap_init_vout(void) { return 0; }
 232 #endif
 233
 234 /*-------------------------------------------------------------------------*/
 235
 236 static int __init omap2_init_devices(void)
 237 {
 238         /* Enable dummy states for those platforms without pinctrl support */
 239         if (!of_have_populated_dt())
 240                 pinctrl_provide_dummies();
 241
 242         /*
 243          * please keep these calls, and their implementations above,
 244          * in alphabetical order so they're easier to sort through.
 245          */
 246         omap_init_audio();
 247         /* If dtb is there, the devices will be created dynamically */
 248         if (!of_have_populated_dt()) {
 249                 omap_init_mbox();
 250                 omap_init_mcspi();
 251                 omap_init_sham();
 252                 omap_init_aes();
 253                 omap_init_rng();
 254         }
 255         omap_init_sti();
 256
 257         return 0;
 258 }
 259 omap_arch_initcall(omap2_init_devices);
 260
 261 static int __init omap_gpmc_init(void)
 262 {
 263         struct omap_hwmod *oh;
 264         struct platform_device *pdev;
 265         char *oh_name = "gpmc";
 266
 267         /*
 268          * if the board boots up with a populated DT, do not
 269          * manually add the device from this initcall
 270          */
 271         if (of_have_populated_dt())
 272                 return -ENODEV;
 273
 274         oh = omap_hwmod_lookup(oh_name);
 275         if (!oh) {
 276                 pr_err("Could not look up %s\n", oh_name);
 277                 return -ENODEV;
 278         }
 279
 280         pdev = omap_device_build("omap-gpmc", -1, oh, NULL, 0);
 281         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
 282
 283         return PTR_ERR_OR_ZERO(pdev);
 284 }
 285 omap_postcore_initcall(omap_gpmc_init);