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
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/map.h>
  24
  25 #include <linux/omap-dma.h>
  26
  27 #include "iomap.h"
  28 #include "omap_hwmod.h"
  29 #include "omap_device.h"
  30
  31 #include "soc.h"
  32 #include "common.h"
  33 #include "mux.h"
  34 #include "control.h"
  35 #include "display.h"
  36
  37 #define L3_MODULES_MAX_LEN 12
  38 #define L3_MODULES 3
  39
  40 static int __init omap3_l3_init(void)
  41 {
  42         struct omap_hwmod *oh;
  43         struct platform_device *pdev;
  44         char oh_name[L3_MODULES_MAX_LEN];
  45
  46         /*
  47          * To avoid code running on other OMAPs in
  48          * multi-omap builds
  49          */
  50         if (!(cpu_is_omap34xx()) || of_have_populated_dt())
  51                 return -ENODEV;
  52
  53         snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main");
  54
  55         oh = omap_hwmod_lookup(oh_name);
  56
  57         if (!oh)
  58                 pr_err("could not look up %s\n", oh_name);
  59
  60         pdev = omap_device_build("omap_l3_smx", 0, oh, NULL, 0);
  61
  62         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
  63
  64         return PTR_ERR_OR_ZERO(pdev);
  65 }
  66 omap_postcore_initcall(omap3_l3_init);
  67
  68 static inline void omap_init_sti(void) {}
  69
  70 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
  71
  72 static struct platform_device omap_pcm = {
  73         .name   = "omap-pcm-audio",
  74         .id     = -1,
  75 };
  76
  77 static void omap_init_audio(void)
  78 {
  79         platform_device_register(&omap_pcm);
  80 }
  81
  82 #else
  83 static inline void omap_init_audio(void) {}
  84 #endif
  85
  86 #if defined(CONFIG_SPI_OMAP24XX) || defined(CONFIG_SPI_OMAP24XX_MODULE)
  87
  88 #include <linux/platform_data/spi-omap2-mcspi.h>
  89
  90 static int __init omap_mcspi_init(struct omap_hwmod *oh, void *unused)
  91 {
  92         struct platform_device *pdev;
  93         char *name = "omap2_mcspi";
  94         struct omap2_mcspi_platform_config *pdata;
  95         static int spi_num;
  96         struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr;
  97
  98         pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
  99         if (!pdata) {
 100                 pr_err("Memory allocation for McSPI device failed\n");
 101                 return -ENOMEM;
 102         }
 103
 104         pdata->num_cs = mcspi_attrib->num_chipselect;
 105         switch (oh->class->rev) {
 106         case OMAP2_MCSPI_REV:
 107         case OMAP3_MCSPI_REV:
 108                         pdata->regs_offset = 0;
 109                         break;
 110         case OMAP4_MCSPI_REV:
 111                         pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET;
 112                         break;
 113         default:
 114                         pr_err("Invalid McSPI Revision value\n");
 115                         kfree(pdata);
 116                         return -EINVAL;
 117         }
 118
 119         spi_num++;
 120         pdev = omap_device_build(name, spi_num, oh, pdata, sizeof(*pdata));
 121         WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s\n",
 122                                 name, oh->name);
 123         kfree(pdata);
 124         return 0;
 125 }
 126
 127 static void omap_init_mcspi(void)
 128 {
 129         omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL);
 130 }
 131
 132 #else
 133 static inline void omap_init_mcspi(void) {}
 134 #endif
 135
 136 /**
 137  * omap_init_rng - bind the RNG hwmod to the RNG omap_device
 138  *
 139  * Bind the RNG hwmod to the RNG omap_device.  No return value.
 140  */
 141 static void omap_init_rng(void)
 142 {
 143         struct omap_hwmod *oh;
 144         struct platform_device *pdev;
 145
 146         oh = omap_hwmod_lookup("rng");
 147         if (!oh)
 148                 return;
 149
 150         pdev = omap_device_build("omap_rng", -1, oh, NULL, 0);
 151         WARN(IS_ERR(pdev), "Can't build omap_device for omap_rng\n");
 152 }
 153
 154 static void __init omap_init_sham(void)
 155 {
 156         struct omap_hwmod *oh;
 157         struct platform_device *pdev;
 158
 159         oh = omap_hwmod_lookup("sham");
 160         if (!oh)
 161                 return;
 162
 163         pdev = omap_device_build("omap-sham", -1, oh, NULL, 0);
 164         WARN(IS_ERR(pdev), "Can't build omap_device for omap-sham\n");
 165 }
 166
 167 static void __init omap_init_aes(void)
 168 {
 169         struct omap_hwmod *oh;
 170         struct platform_device *pdev;
 171
 172         oh = omap_hwmod_lookup("aes");
 173         if (!oh)
 174                 return;
 175
 176         pdev = omap_device_build("omap-aes", -1, oh, NULL, 0);
 177         WARN(IS_ERR(pdev), "Can't build omap_device for omap-aes\n");
 178 }
 179
 180 /*-------------------------------------------------------------------------*/
 181
 182 #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \
 183         defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE)
 184 #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
 185 static struct resource omap_vout_resource[3 - CONFIG_FB_OMAP2_NUM_FBS] = {
 186 };
 187 #else
 188 static struct resource omap_vout_resource[2] = {
 189 };
 190 #endif
 191
 192 static struct platform_device omap_vout_device = {
 193         .name           = "omap_vout",
 194         .num_resources  = ARRAY_SIZE(omap_vout_resource),
 195         .resource       = &omap_vout_resource[0],
 196         .id             = -1,
 197 };
 198
 199 int __init omap_init_vout(void)
 200 {
 201         return platform_device_register(&omap_vout_device);
 202 }
 203 #else
 204 int __init omap_init_vout(void) { return 0; }
 205 #endif
 206
 207 /*-------------------------------------------------------------------------*/
 208
 209 static int __init omap2_init_devices(void)
 210 {
 211         /* Enable dummy states for those platforms without pinctrl support */
 212         if (!of_have_populated_dt())
 213                 pinctrl_provide_dummies();
 214
 215         /*
 216          * please keep these calls, and their implementations above,
 217          * in alphabetical order so they're easier to sort through.
 218          */
 219         omap_init_audio();
 220         /* If dtb is there, the devices will be created dynamically */
 221         if (!of_have_populated_dt()) {
 222                 omap_init_mcspi();
 223                 omap_init_sham();
 224                 omap_init_aes();
 225                 omap_init_rng();
 226         }
 227         omap_init_sti();
 228
 229         return 0;
 230 }
 231 omap_arch_initcall(omap2_init_devices);
 232
 233 static int __init omap_gpmc_init(void)
 234 {
 235         struct omap_hwmod *oh;
 236         struct platform_device *pdev;
 237         char *oh_name = "gpmc";
 238
 239         /*
 240          * if the board boots up with a populated DT, do not
 241          * manually add the device from this initcall
 242          */
 243         if (of_have_populated_dt())
 244                 return -ENODEV;
 245
 246         oh = omap_hwmod_lookup(oh_name);
 247         if (!oh) {
 248                 pr_err("Could not look up %s\n", oh_name);
 249                 return -ENODEV;
 250         }
 251
 252         pdev = omap_device_build("omap-gpmc", -1, oh, NULL, 0);
 253         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
 254
 255         return PTR_ERR_OR_ZERO(pdev);
 256 }
 257 omap_postcore_initcall(omap_gpmc_init);