treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
[muen/linux.git] / arch / arm / mach-omap1 / devices.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * linux/arch/arm/mach-omap1/devices.c
4  *
5  * OMAP1 platform device setup/initialization
6  */
7
8 #include <linux/dma-mapping.h>
9 #include <linux/gpio.h>
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/spi/spi.h>
15
16 #include <linux/platform_data/omap-wd-timer.h>
17
18 #include <asm/mach/map.h>
19
20 #include <mach/tc.h>
21 #include <mach/mux.h>
22
23 #include <mach/omap7xx.h>
24 #include "camera.h"
25 #include <mach/hardware.h>
26
27 #include "common.h"
28 #include "clock.h"
29 #include "mmc.h"
30 #include "sram.h"
31
32 #if IS_ENABLED(CONFIG_RTC_DRV_OMAP)
33
34 #define OMAP_RTC_BASE           0xfffb4800
35
36 static struct resource rtc_resources[] = {
37         {
38                 .start          = OMAP_RTC_BASE,
39                 .end            = OMAP_RTC_BASE + 0x5f,
40                 .flags          = IORESOURCE_MEM,
41         },
42         {
43                 .start          = INT_RTC_TIMER,
44                 .flags          = IORESOURCE_IRQ,
45         },
46         {
47                 .start          = INT_RTC_ALARM,
48                 .flags          = IORESOURCE_IRQ,
49         },
50 };
51
52 static struct platform_device omap_rtc_device = {
53         .name           = "omap_rtc",
54         .id             = -1,
55         .num_resources  = ARRAY_SIZE(rtc_resources),
56         .resource       = rtc_resources,
57 };
58
59 static void omap_init_rtc(void)
60 {
61         (void) platform_device_register(&omap_rtc_device);
62 }
63 #else
64 static inline void omap_init_rtc(void) {}
65 #endif
66
67 static inline void omap_init_mbox(void) { }
68
69 /*-------------------------------------------------------------------------*/
70
71 #if IS_ENABLED(CONFIG_MMC_OMAP)
72
73 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
74                         int controller_nr)
75 {
76         if (controller_nr == 0) {
77                 if (cpu_is_omap7xx()) {
78                         omap_cfg_reg(MMC_7XX_CMD);
79                         omap_cfg_reg(MMC_7XX_CLK);
80                         omap_cfg_reg(MMC_7XX_DAT0);
81                 } else {
82                         omap_cfg_reg(MMC_CMD);
83                         omap_cfg_reg(MMC_CLK);
84                         omap_cfg_reg(MMC_DAT0);
85                 }
86
87                 if (cpu_is_omap1710()) {
88                         omap_cfg_reg(M15_1710_MMC_CLKI);
89                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
90                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
91                 }
92                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
93                         omap_cfg_reg(MMC_DAT1);
94                         /* NOTE: DAT2 can be on W10 (here) or M15 */
95                         if (!mmc_controller->slots[0].nomux)
96                                 omap_cfg_reg(MMC_DAT2);
97                         omap_cfg_reg(MMC_DAT3);
98                 }
99         }
100
101         /* Block 2 is on newer chips, and has many pinout options */
102         if (cpu_is_omap16xx() && controller_nr == 1) {
103                 if (!mmc_controller->slots[1].nomux) {
104                         omap_cfg_reg(Y8_1610_MMC2_CMD);
105                         omap_cfg_reg(Y10_1610_MMC2_CLK);
106                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
107                         omap_cfg_reg(W8_1610_MMC2_DAT0);
108                         if (mmc_controller->slots[1].wires == 4) {
109                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
110                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
111                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
112                         }
113
114                         /* These are needed for the level shifter */
115                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
116                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
117                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
118                 }
119
120                 /* Feedback clock must be set on OMAP-1710 MMC2 */
121                 if (cpu_is_omap1710())
122                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
123                                         MOD_CONF_CTRL_1);
124         }
125 }
126
127 #define OMAP_MMC_NR_RES         4
128
129 /*
130  * Register MMC devices.
131  */
132 static int __init omap_mmc_add(const char *name, int id, unsigned long base,
133                                 unsigned long size, unsigned int irq,
134                                 unsigned rx_req, unsigned tx_req,
135                                 struct omap_mmc_platform_data *data)
136 {
137         struct platform_device *pdev;
138         struct resource res[OMAP_MMC_NR_RES];
139         int ret;
140
141         pdev = platform_device_alloc(name, id);
142         if (!pdev)
143                 return -ENOMEM;
144
145         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
146         res[0].start = base;
147         res[0].end = base + size - 1;
148         res[0].flags = IORESOURCE_MEM;
149         res[1].start = res[1].end = irq;
150         res[1].flags = IORESOURCE_IRQ;
151         res[2].start = rx_req;
152         res[2].name = "rx";
153         res[2].flags = IORESOURCE_DMA;
154         res[3].start = tx_req;
155         res[3].name = "tx";
156         res[3].flags = IORESOURCE_DMA;
157
158         if (cpu_is_omap7xx())
159                 data->slots[0].features = MMC_OMAP7XX;
160         if (cpu_is_omap15xx())
161                 data->slots[0].features = MMC_OMAP15XX;
162         if (cpu_is_omap16xx())
163                 data->slots[0].features = MMC_OMAP16XX;
164
165         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
166         if (ret == 0)
167                 ret = platform_device_add_data(pdev, data, sizeof(*data));
168         if (ret)
169                 goto fail;
170
171         ret = platform_device_add(pdev);
172         if (ret)
173                 goto fail;
174
175         /* return device handle to board setup code */
176         data->dev = &pdev->dev;
177         return 0;
178
179 fail:
180         platform_device_put(pdev);
181         return ret;
182 }
183
184 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
185                         int nr_controllers)
186 {
187         int i;
188
189         for (i = 0; i < nr_controllers; i++) {
190                 unsigned long base, size;
191                 unsigned rx_req, tx_req;
192                 unsigned int irq = 0;
193
194                 if (!mmc_data[i])
195                         continue;
196
197                 omap1_mmc_mux(mmc_data[i], i);
198
199                 switch (i) {
200                 case 0:
201                         base = OMAP1_MMC1_BASE;
202                         irq = INT_MMC;
203                         rx_req = 22;
204                         tx_req = 21;
205                         break;
206                 case 1:
207                         if (!cpu_is_omap16xx())
208                                 return;
209                         base = OMAP1_MMC2_BASE;
210                         irq = INT_1610_MMC2;
211                         rx_req = 55;
212                         tx_req = 54;
213                         break;
214                 default:
215                         continue;
216                 }
217                 size = OMAP1_MMC_SIZE;
218
219                 omap_mmc_add("mmci-omap", i, base, size, irq,
220                                 rx_req, tx_req, mmc_data[i]);
221         }
222 }
223
224 #endif
225
226 /*-------------------------------------------------------------------------*/
227
228 /* OMAP7xx SPI support */
229 #if IS_ENABLED(CONFIG_SPI_OMAP_100K)
230
231 struct platform_device omap_spi1 = {
232         .name           = "omap1_spi100k",
233         .id             = 1,
234 };
235
236 struct platform_device omap_spi2 = {
237         .name           = "omap1_spi100k",
238         .id             = 2,
239 };
240
241 static void omap_init_spi100k(void)
242 {
243         if (!cpu_is_omap7xx())
244                 return;
245
246         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
247         if (omap_spi1.dev.platform_data)
248                 platform_device_register(&omap_spi1);
249
250         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
251         if (omap_spi2.dev.platform_data)
252                 platform_device_register(&omap_spi2);
253 }
254
255 #else
256 static inline void omap_init_spi100k(void)
257 {
258 }
259 #endif
260
261
262 #define OMAP1_CAMERA_BASE       0xfffb6800
263 #define OMAP1_CAMERA_IOSIZE     0x1c
264
265 static struct resource omap1_camera_resources[] = {
266         [0] = {
267                 .start  = OMAP1_CAMERA_BASE,
268                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
269                 .flags  = IORESOURCE_MEM,
270         },
271         [1] = {
272                 .start  = INT_CAMERA,
273                 .flags  = IORESOURCE_IRQ,
274         },
275 };
276
277 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
278
279 static struct platform_device omap1_camera_device = {
280         .name           = "omap1-camera",
281         .id             = 0, /* This is used to put cameras on this interface */
282         .dev            = {
283                 .dma_mask               = &omap1_camera_dma_mask,
284                 .coherent_dma_mask      = DMA_BIT_MASK(32),
285         },
286         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
287         .resource       = omap1_camera_resources,
288 };
289
290 void __init omap1_camera_init(void *info)
291 {
292         struct platform_device *dev = &omap1_camera_device;
293         int ret;
294
295         dev->dev.platform_data = info;
296
297         ret = platform_device_register(dev);
298         if (ret)
299                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
300 }
301
302
303 /*-------------------------------------------------------------------------*/
304
305 static inline void omap_init_sti(void) {}
306
307 /* Numbering for the SPI-capable controllers when used for SPI:
308  * spi          = 1
309  * uwire        = 2
310  * mmc1..2      = 3..4
311  * mcbsp1..3    = 5..7
312  */
313
314 #if IS_ENABLED(CONFIG_SPI_OMAP_UWIRE)
315
316 #define OMAP_UWIRE_BASE         0xfffb3000
317
318 static struct resource uwire_resources[] = {
319         {
320                 .start          = OMAP_UWIRE_BASE,
321                 .end            = OMAP_UWIRE_BASE + 0x20,
322                 .flags          = IORESOURCE_MEM,
323         },
324 };
325
326 static struct platform_device omap_uwire_device = {
327         .name      = "omap_uwire",
328         .id          = -1,
329         .num_resources  = ARRAY_SIZE(uwire_resources),
330         .resource       = uwire_resources,
331 };
332
333 static void omap_init_uwire(void)
334 {
335         /* FIXME define and use a boot tag; not all boards will be hooking
336          * up devices to the microwire controller, and multi-board configs
337          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
338          */
339
340         /* board-specific code must configure chipselects (only a few
341          * are normally used) and SCLK/SDI/SDO (each has two choices).
342          */
343         (void) platform_device_register(&omap_uwire_device);
344 }
345 #else
346 static inline void omap_init_uwire(void) {}
347 #endif
348
349
350 #define OMAP1_RNG_BASE          0xfffe5000
351
352 static struct resource omap1_rng_resources[] = {
353         {
354                 .start          = OMAP1_RNG_BASE,
355                 .end            = OMAP1_RNG_BASE + 0x4f,
356                 .flags          = IORESOURCE_MEM,
357         },
358 };
359
360 static struct platform_device omap1_rng_device = {
361         .name           = "omap_rng",
362         .id             = -1,
363         .num_resources  = ARRAY_SIZE(omap1_rng_resources),
364         .resource       = omap1_rng_resources,
365 };
366
367 static void omap1_init_rng(void)
368 {
369         if (!cpu_is_omap16xx())
370                 return;
371
372         (void) platform_device_register(&omap1_rng_device);
373 }
374
375 /*-------------------------------------------------------------------------*/
376
377 /*
378  * This gets called after board-specific INIT_MACHINE, and initializes most
379  * on-chip peripherals accessible on this board (except for few like USB):
380  *
381  *  (a) Does any "standard config" pin muxing needed.  Board-specific
382  *      code will have muxed GPIO pins and done "nonstandard" setup;
383  *      that code could live in the boot loader.
384  *  (b) Populating board-specific platform_data with the data drivers
385  *      rely on to handle wiring variations.
386  *  (c) Creating platform devices as meaningful on this board and
387  *      with this kernel configuration.
388  *
389  * Claiming GPIOs, and setting their direction and initial values, is the
390  * responsibility of the device drivers.  So is responding to probe().
391  *
392  * Board-specific knowledge like creating devices or pin setup is to be
393  * kept out of drivers as much as possible.  In particular, pin setup
394  * may be handled by the boot loader, and drivers should expect it will
395  * normally have been done by the time they're probed.
396  */
397 static int __init omap1_init_devices(void)
398 {
399         if (!cpu_class_is_omap1())
400                 return -ENODEV;
401
402         omap_sram_init();
403         omap1_clk_late_init();
404
405         /* please keep these calls, and their implementations above,
406          * in alphabetical order so they're easier to sort through.
407          */
408
409         omap_init_mbox();
410         omap_init_rtc();
411         omap_init_spi100k();
412         omap_init_sti();
413         omap_init_uwire();
414         omap1_init_rng();
415
416         return 0;
417 }
418 arch_initcall(omap1_init_devices);
419
420 #if IS_ENABLED(CONFIG_OMAP_WATCHDOG)
421
422 static struct resource wdt_resources[] = {
423         {
424                 .start          = 0xfffeb000,
425                 .end            = 0xfffeb07F,
426                 .flags          = IORESOURCE_MEM,
427         },
428 };
429
430 static struct platform_device omap_wdt_device = {
431         .name           = "omap_wdt",
432         .id             = -1,
433         .num_resources  = ARRAY_SIZE(wdt_resources),
434         .resource       = wdt_resources,
435 };
436
437 static int __init omap_init_wdt(void)
438 {
439         struct omap_wd_timer_platform_data pdata;
440         int ret;
441
442         if (!cpu_is_omap16xx())
443                 return -ENODEV;
444
445         pdata.read_reset_sources = omap1_get_reset_sources;
446
447         ret = platform_device_register(&omap_wdt_device);
448         if (!ret) {
449                 ret = platform_device_add_data(&omap_wdt_device, &pdata,
450                                                sizeof(pdata));
451                 if (ret)
452                         platform_device_del(&omap_wdt_device);
453         }
454
455         return ret;
456 }
457 subsys_initcall(omap_init_wdt);
458 #endif