xref: /openbmc/linux/arch/arm/mach-omap2/devices.c (revision a2cce7a9) 
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);
339