| 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_SPI_OMAP24XX) || defined(CONFIG_SPI_OMAP24XX_MODULE) |
| 71 | |
| 72 | #include <linux/platform_data/spi-omap2-mcspi.h> |
| 73 | |
| 74 | static int __init omap_mcspi_init(struct omap_hwmod *oh, void *unused) |
| 75 | { |
| 76 | struct platform_device *pdev; |
| 77 | char *name = "omap2_mcspi"; |
| 78 | struct omap2_mcspi_platform_config *pdata; |
| 79 | static int spi_num; |
| 80 | struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr; |
| 81 | |
| 82 | pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); |
| 83 | if (!pdata) { |
| 84 | pr_err("Memory allocation for McSPI device failed\n"); |
| 85 | return -ENOMEM; |
| 86 | } |
| 87 | |
| 88 | pdata->num_cs = mcspi_attrib->num_chipselect; |
| 89 | switch (oh->class->rev) { |
| 90 | case OMAP2_MCSPI_REV: |
| 91 | case OMAP3_MCSPI_REV: |
| 92 | pdata->regs_offset = 0; |
| 93 | break; |
| 94 | case OMAP4_MCSPI_REV: |
| 95 | pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET; |
| 96 | break; |
| 97 | default: |
| 98 | pr_err("Invalid McSPI Revision value\n"); |
| 99 | kfree(pdata); |
| 100 | return -EINVAL; |
| 101 | } |
| 102 | |
| 103 | spi_num++; |
| 104 | pdev = omap_device_build(name, spi_num, oh, pdata, sizeof(*pdata)); |
| 105 | WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s\n", |
| 106 | name, oh->name); |
| 107 | kfree(pdata); |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static void omap_init_mcspi(void) |
| 112 | { |
| 113 | omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL); |
| 114 | } |
| 115 | |
| 116 | #else |
| 117 | static inline void omap_init_mcspi(void) {} |
| 118 | #endif |
| 119 | |
| 120 | /** |
| 121 | * omap_init_rng - bind the RNG hwmod to the RNG omap_device |
| 122 | * |
| 123 | * Bind the RNG hwmod to the RNG omap_device. No return value. |
| 124 | */ |
| 125 | static void omap_init_rng(void) |
| 126 | { |
| 127 | struct omap_hwmod *oh; |
| 128 | struct platform_device *pdev; |
| 129 | |
| 130 | oh = omap_hwmod_lookup("rng"); |
| 131 | if (!oh) |
| 132 | return; |
| 133 | |
| 134 | pdev = omap_device_build("omap_rng", -1, oh, NULL, 0); |
| 135 | WARN(IS_ERR(pdev), "Can't build omap_device for omap_rng\n"); |
| 136 | } |
| 137 | |
| 138 | static void __init omap_init_sham(void) |
| 139 | { |
| 140 | struct omap_hwmod *oh; |
| 141 | struct platform_device *pdev; |
| 142 | |
| 143 | oh = omap_hwmod_lookup("sham"); |
| 144 | if (!oh) |
| 145 | return; |
| 146 | |
| 147 | pdev = omap_device_build("omap-sham", -1, oh, NULL, 0); |
| 148 | WARN(IS_ERR(pdev), "Can't build omap_device for omap-sham\n"); |
| 149 | } |
| 150 | |
| 151 | static void __init omap_init_aes(void) |
| 152 | { |
| 153 | struct omap_hwmod *oh; |
| 154 | struct platform_device *pdev; |
| 155 | |
| 156 | oh = omap_hwmod_lookup("aes"); |
| 157 | if (!oh) |
| 158 | return; |
| 159 | |
| 160 | pdev = omap_device_build("omap-aes", -1, oh, NULL, 0); |
| 161 | WARN(IS_ERR(pdev), "Can't build omap_device for omap-aes\n"); |
| 162 | } |
| 163 | |
| 164 | /*-------------------------------------------------------------------------*/ |
| 165 | |
| 166 | #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \ |
| 167 | defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE) |
| 168 | #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE) |
| 169 | static struct resource omap_vout_resource[3 - CONFIG_FB_OMAP2_NUM_FBS] = { |
| 170 | }; |
| 171 | #else |
| 172 | static struct resource omap_vout_resource[2] = { |
| 173 | }; |
| 174 | #endif |
| 175 | |
| 176 | static struct platform_device omap_vout_device = { |
| 177 | .name = "omap_vout", |
| 178 | .num_resources = ARRAY_SIZE(omap_vout_resource), |
| 179 | .resource = &omap_vout_resource[0], |
| 180 | .id = -1, |
| 181 | }; |
| 182 | |
| 183 | int __init omap_init_vout(void) |
| 184 | { |
| 185 | return platform_device_register(&omap_vout_device); |
| 186 | } |
| 187 | #else |
| 188 | int __init omap_init_vout(void) { return 0; } |
| 189 | #endif |
| 190 | |
| 191 | /*-------------------------------------------------------------------------*/ |
| 192 | |
| 193 | static int __init omap2_init_devices(void) |
| 194 | { |
| 195 | /* Enable dummy states for those platforms without pinctrl support */ |
| 196 | if (!of_have_populated_dt()) |
| 197 | pinctrl_provide_dummies(); |
| 198 | |
| 199 | /* If dtb is there, the devices will be created dynamically */ |
| 200 | if (!of_have_populated_dt()) { |
| 201 | /* |
| 202 | * please keep these calls, and their implementations above, |
| 203 | * in alphabetical order so they're easier to sort through. |
| 204 | */ |
| 205 | omap_init_mcspi(); |
| 206 | omap_init_sham(); |
| 207 | omap_init_aes(); |
| 208 | omap_init_rng(); |
| 209 | } |
| 210 | omap_init_sti(); |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | omap_arch_initcall(omap2_init_devices); |
| 215 | |
| 216 | static int __init omap_gpmc_init(void) |
| 217 | { |
| 218 | struct omap_hwmod *oh; |
| 219 | struct platform_device *pdev; |
| 220 | char *oh_name = "gpmc"; |
| 221 | |
| 222 | /* |
| 223 | * if the board boots up with a populated DT, do not |
| 224 | * manually add the device from this initcall |
| 225 | */ |
| 226 | if (of_have_populated_dt()) |
| 227 | return -ENODEV; |
| 228 | |
| 229 | oh = omap_hwmod_lookup(oh_name); |
| 230 | if (!oh) { |
| 231 | pr_err("Could not look up %s\n", oh_name); |
| 232 | return -ENODEV; |
| 233 | } |
| 234 | |
| 235 | pdev = omap_device_build("omap-gpmc", -1, oh, NULL, 0); |
| 236 | WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name); |
| 237 | |
| 238 | return PTR_ERR_OR_ZERO(pdev); |
| 239 | } |
| 240 | omap_postcore_initcall(omap_gpmc_init); |