Merge tag 'iio-for-5.1a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio...
[muen/linux.git] / arch / arm / mach-omap1 / devices.c
1 /*
2  * linux/arch/arm/mach-omap1/devices.c
3  *
4  * OMAP1 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
12 #include <linux/dma-mapping.h>
13 #include <linux/gpio.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/spi/spi.h>
19
20 #include <linux/platform_data/omap-wd-timer.h>
21
22 #include <asm/mach/map.h>
23
24 #include <mach/tc.h>
25 #include <mach/mux.h>
26
27 #include <mach/omap7xx.h>
28 #include "camera.h"
29 #include <mach/hardware.h>
30
31 #include "common.h"
32 #include "clock.h"
33 #include "mmc.h"
34 #include "sram.h"
35
36 #if IS_ENABLED(CONFIG_RTC_DRV_OMAP)
37
38 #define OMAP_RTC_BASE           0xfffb4800
39
40 static struct resource rtc_resources[] = {
41         {
42                 .start          = OMAP_RTC_BASE,
43                 .end            = OMAP_RTC_BASE + 0x5f,
44                 .flags          = IORESOURCE_MEM,
45         },
46         {
47                 .start          = INT_RTC_TIMER,
48                 .flags          = IORESOURCE_IRQ,
49         },
50         {
51                 .start          = INT_RTC_ALARM,
52                 .flags          = IORESOURCE_IRQ,
53         },
54 };
55
56 static struct platform_device omap_rtc_device = {
57         .name           = "omap_rtc",
58         .id             = -1,
59         .num_resources  = ARRAY_SIZE(rtc_resources),
60         .resource       = rtc_resources,
61 };
62
63 static void omap_init_rtc(void)
64 {
65         (void) platform_device_register(&omap_rtc_device);
66 }
67 #else
68 static inline void omap_init_rtc(void) {}
69 #endif
70
71 static inline void omap_init_mbox(void) { }
72
73 /*-------------------------------------------------------------------------*/
74
75 #if IS_ENABLED(CONFIG_MMC_OMAP)
76
77 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
78                         int controller_nr)
79 {
80         if (controller_nr == 0) {
81                 if (cpu_is_omap7xx()) {
82                         omap_cfg_reg(MMC_7XX_CMD);
83                         omap_cfg_reg(MMC_7XX_CLK);
84                         omap_cfg_reg(MMC_7XX_DAT0);
85                 } else {
86                         omap_cfg_reg(MMC_CMD);
87                         omap_cfg_reg(MMC_CLK);
88                         omap_cfg_reg(MMC_DAT0);
89                 }
90
91                 if (cpu_is_omap1710()) {
92                         omap_cfg_reg(M15_1710_MMC_CLKI);
93                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
94                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
95                 }
96                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
97                         omap_cfg_reg(MMC_DAT1);
98                         /* NOTE: DAT2 can be on W10 (here) or M15 */
99                         if (!mmc_controller->slots[0].nomux)
100                                 omap_cfg_reg(MMC_DAT2);
101                         omap_cfg_reg(MMC_DAT3);
102                 }
103         }
104
105         /* Block 2 is on newer chips, and has many pinout options */
106         if (cpu_is_omap16xx() && controller_nr == 1) {
107                 if (!mmc_controller->slots[1].nomux) {
108                         omap_cfg_reg(Y8_1610_MMC2_CMD);
109                         omap_cfg_reg(Y10_1610_MMC2_CLK);
110                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
111                         omap_cfg_reg(W8_1610_MMC2_DAT0);
112                         if (mmc_controller->slots[1].wires == 4) {
113                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
114                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
115                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
116                         }
117
118                         /* These are needed for the level shifter */
119                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
120                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
121                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
122                 }
123
124                 /* Feedback clock must be set on OMAP-1710 MMC2 */
125                 if (cpu_is_omap1710())
126                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
127                                         MOD_CONF_CTRL_1);
128         }
129 }
130
131 #define OMAP_MMC_NR_RES         4
132
133 /*
134  * Register MMC devices.
135  */
136 static int __init omap_mmc_add(const char *name, int id, unsigned long base,
137                                 unsigned long size, unsigned int irq,
138                                 unsigned rx_req, unsigned tx_req,
139                                 struct omap_mmc_platform_data *data)
140 {
141         struct platform_device *pdev;
142         struct resource res[OMAP_MMC_NR_RES];
143         int ret;
144
145         pdev = platform_device_alloc(name, id);
146         if (!pdev)
147                 return -ENOMEM;
148
149         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
150         res[0].start = base;
151         res[0].end = base + size - 1;
152         res[0].flags = IORESOURCE_MEM;
153         res[1].start = res[1].end = irq;
154         res[1].flags = IORESOURCE_IRQ;
155         res[2].start = rx_req;
156         res[2].name = "rx";
157         res[2].flags = IORESOURCE_DMA;
158         res[3].start = tx_req;
159         res[3].name = "tx";
160         res[3].flags = IORESOURCE_DMA;
161
162         if (cpu_is_omap7xx())
163                 data->slots[0].features = MMC_OMAP7XX;
164         if (cpu_is_omap15xx())
165                 data->slots[0].features = MMC_OMAP15XX;
166         if (cpu_is_omap16xx())
167                 data->slots[0].features = MMC_OMAP16XX;
168
169         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
170         if (ret == 0)
171                 ret = platform_device_add_data(pdev, data, sizeof(*data));
172         if (ret)
173                 goto fail;
174
175         ret = platform_device_add(pdev);
176         if (ret)
177                 goto fail;
178
179         /* return device handle to board setup code */
180         data->dev = &pdev->dev;
181         return 0;
182
183 fail:
184         platform_device_put(pdev);
185         return ret;
186 }
187
188 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
189                         int nr_controllers)
190 {
191         int i;
192
193         for (i = 0; i < nr_controllers; i++) {
194                 unsigned long base, size;
195                 unsigned rx_req, tx_req;
196                 unsigned int irq = 0;
197
198                 if (!mmc_data[i])
199                         continue;
200
201                 omap1_mmc_mux(mmc_data[i], i);
202
203                 switch (i) {
204                 case 0:
205                         base = OMAP1_MMC1_BASE;
206                         irq = INT_MMC;
207                         rx_req = 22;
208                         tx_req = 21;
209                         break;
210                 case 1:
211                         if (!cpu_is_omap16xx())
212                                 return;
213                         base = OMAP1_MMC2_BASE;
214                         irq = INT_1610_MMC2;
215                         rx_req = 55;
216                         tx_req = 54;
217                         break;
218                 default:
219                         continue;
220                 }
221                 size = OMAP1_MMC_SIZE;
222
223                 omap_mmc_add("mmci-omap", i, base, size, irq,
224                                 rx_req, tx_req, mmc_data[i]);
225         }
226 }
227
228 #endif
229
230 /*-------------------------------------------------------------------------*/
231
232 /* OMAP7xx SPI support */
233 #if IS_ENABLED(CONFIG_SPI_OMAP_100K)
234
235 struct platform_device omap_spi1 = {
236         .name           = "omap1_spi100k",
237         .id             = 1,
238 };
239
240 struct platform_device omap_spi2 = {
241         .name           = "omap1_spi100k",
242         .id             = 2,
243 };
244
245 static void omap_init_spi100k(void)
246 {
247         if (!cpu_is_omap7xx())
248                 return;
249
250         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
251         if (omap_spi1.dev.platform_data)
252                 platform_device_register(&omap_spi1);
253
254         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
255         if (omap_spi2.dev.platform_data)
256                 platform_device_register(&omap_spi2);
257 }
258
259 #else
260 static inline void omap_init_spi100k(void)
261 {
262 }
263 #endif
264
265
266 #define OMAP1_CAMERA_BASE       0xfffb6800
267 #define OMAP1_CAMERA_IOSIZE     0x1c
268
269 static struct resource omap1_camera_resources[] = {
270         [0] = {
271                 .start  = OMAP1_CAMERA_BASE,
272                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
273                 .flags  = IORESOURCE_MEM,
274         },
275         [1] = {
276                 .start  = INT_CAMERA,
277                 .flags  = IORESOURCE_IRQ,
278         },
279 };
280
281 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
282
283 static struct platform_device omap1_camera_device = {
284         .name           = "omap1-camera",
285         .id             = 0, /* This is used to put cameras on this interface */
286         .dev            = {
287                 .dma_mask               = &omap1_camera_dma_mask,
288                 .coherent_dma_mask      = DMA_BIT_MASK(32),
289         },
290         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
291         .resource       = omap1_camera_resources,
292 };
293
294 void __init omap1_camera_init(void *info)
295 {
296         struct platform_device *dev = &omap1_camera_device;
297         int ret;
298
299         dev->dev.platform_data = info;
300
301         ret = platform_device_register(dev);
302         if (ret)
303                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
304 }
305
306
307 /*-------------------------------------------------------------------------*/
308
309 static inline void omap_init_sti(void) {}
310
311 /* Numbering for the SPI-capable controllers when used for SPI:
312  * spi          = 1
313  * uwire        = 2
314  * mmc1..2      = 3..4
315  * mcbsp1..3    = 5..7
316  */
317
318 #if IS_ENABLED(CONFIG_SPI_OMAP_UWIRE)
319
320 #define OMAP_UWIRE_BASE         0xfffb3000
321
322 static struct resource uwire_resources[] = {
323         {
324                 .start          = OMAP_UWIRE_BASE,
325                 .end            = OMAP_UWIRE_BASE + 0x20,
326                 .flags          = IORESOURCE_MEM,
327         },
328 };
329
330 static struct platform_device omap_uwire_device = {
331         .name      = "omap_uwire",
332         .id          = -1,
333         .num_resources  = ARRAY_SIZE(uwire_resources),
334         .resource       = uwire_resources,
335 };
336
337 static void omap_init_uwire(void)
338 {
339         /* FIXME define and use a boot tag; not all boards will be hooking
340          * up devices to the microwire controller, and multi-board configs
341          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
342          */
343
344         /* board-specific code must configure chipselects (only a few
345          * are normally used) and SCLK/SDI/SDO (each has two choices).
346          */
347         (void) platform_device_register(&omap_uwire_device);
348 }
349 #else
350 static inline void omap_init_uwire(void) {}
351 #endif
352
353
354 #define OMAP1_RNG_BASE          0xfffe5000
355
356 static struct resource omap1_rng_resources[] = {
357         {
358                 .start          = OMAP1_RNG_BASE,
359                 .end            = OMAP1_RNG_BASE + 0x4f,
360                 .flags          = IORESOURCE_MEM,
361         },
362 };
363
364 static struct platform_device omap1_rng_device = {
365         .name           = "omap_rng",
366         .id             = -1,
367         .num_resources  = ARRAY_SIZE(omap1_rng_resources),
368         .resource       = omap1_rng_resources,
369 };
370
371 static void omap1_init_rng(void)
372 {
373         if (!cpu_is_omap16xx())
374                 return;
375
376         (void) platform_device_register(&omap1_rng_device);
377 }
378
379 /*-------------------------------------------------------------------------*/
380
381 /*
382  * This gets called after board-specific INIT_MACHINE, and initializes most
383  * on-chip peripherals accessible on this board (except for few like USB):
384  *
385  *  (a) Does any "standard config" pin muxing needed.  Board-specific
386  *      code will have muxed GPIO pins and done "nonstandard" setup;
387  *      that code could live in the boot loader.
388  *  (b) Populating board-specific platform_data with the data drivers
389  *      rely on to handle wiring variations.
390  *  (c) Creating platform devices as meaningful on this board and
391  *      with this kernel configuration.
392  *
393  * Claiming GPIOs, and setting their direction and initial values, is the
394  * responsibility of the device drivers.  So is responding to probe().
395  *
396  * Board-specific knowledge like creating devices or pin setup is to be
397  * kept out of drivers as much as possible.  In particular, pin setup
398  * may be handled by the boot loader, and drivers should expect it will
399  * normally have been done by the time they're probed.
400  */
401 static int __init omap1_init_devices(void)
402 {
403         if (!cpu_class_is_omap1())
404                 return -ENODEV;
405
406         omap_sram_init();
407         omap1_clk_late_init();
408
409         /* please keep these calls, and their implementations above,
410          * in alphabetical order so they're easier to sort through.
411          */
412
413         omap_init_mbox();
414         omap_init_rtc();
415         omap_init_spi100k();
416         omap_init_sti();
417         omap_init_uwire();
418         omap1_init_rng();
419
420         return 0;
421 }
422 arch_initcall(omap1_init_devices);
423
424 #if IS_ENABLED(CONFIG_OMAP_WATCHDOG)
425
426 static struct resource wdt_resources[] = {
427         {
428                 .start          = 0xfffeb000,
429                 .end            = 0xfffeb07F,
430                 .flags          = IORESOURCE_MEM,
431         },
432 };
433
434 static struct platform_device omap_wdt_device = {
435         .name           = "omap_wdt",
436         .id             = -1,
437         .num_resources  = ARRAY_SIZE(wdt_resources),
438         .resource       = wdt_resources,
439 };
440
441 static int __init omap_init_wdt(void)
442 {
443         struct omap_wd_timer_platform_data pdata;
444         int ret;
445
446         if (!cpu_is_omap16xx())
447                 return -ENODEV;
448
449         pdata.read_reset_sources = omap1_get_reset_sources;
450
451         ret = platform_device_register(&omap_wdt_device);
452         if (!ret) {
453                 ret = platform_device_add_data(&omap_wdt_device, &pdata,
454                                                sizeof(pdata));
455                 if (ret)
456                         platform_device_del(&omap_wdt_device);
457         }
458
459         return ret;
460 }
461 subsys_initcall(omap_init_wdt);
462 #endif