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[karo-tx-linux.git] / 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);