]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - arch/mips/alchemy/devboards/db1200/platform.c
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
[mirror_ubuntu-hirsute-kernel.git] / arch / mips / alchemy / devboards / db1200 / platform.c
1 /*
2 * DBAu1200 board platform device registration
3 *
4 * Copyright (C) 2008-2009 Manuel Lauss
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 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <linux/dma-mapping.h>
22 #include <linux/gpio.h>
23 #include <linux/i2c.h>
24 #include <linux/init.h>
25 #include <linux/io.h>
26 #include <linux/leds.h>
27 #include <linux/mmc/host.h>
28 #include <linux/mtd/mtd.h>
29 #include <linux/mtd/nand.h>
30 #include <linux/mtd/partitions.h>
31 #include <linux/platform_device.h>
32 #include <linux/serial_8250.h>
33 #include <linux/spi/spi.h>
34 #include <linux/spi/flash.h>
35 #include <linux/smc91x.h>
36
37 #include <asm/mach-au1x00/au1100_mmc.h>
38 #include <asm/mach-au1x00/au1xxx_dbdma.h>
39 #include <asm/mach-au1x00/au1550_spi.h>
40 #include <asm/mach-db1x00/bcsr.h>
41 #include <asm/mach-db1x00/db1200.h>
42
43 #include "../platform.h"
44
45 static struct mtd_partition db1200_spiflash_parts[] = {
46 {
47 .name = "DB1200 SPI flash",
48 .offset = 0,
49 .size = MTDPART_SIZ_FULL,
50 },
51 };
52
53 static struct flash_platform_data db1200_spiflash_data = {
54 .name = "s25fl001",
55 .parts = db1200_spiflash_parts,
56 .nr_parts = ARRAY_SIZE(db1200_spiflash_parts),
57 .type = "m25p10",
58 };
59
60 static struct spi_board_info db1200_spi_devs[] __initdata = {
61 {
62 /* TI TMP121AIDBVR temp sensor */
63 .modalias = "tmp121",
64 .max_speed_hz = 2000000,
65 .bus_num = 0,
66 .chip_select = 0,
67 .mode = 0,
68 },
69 {
70 /* Spansion S25FL001D0FMA SPI flash */
71 .modalias = "m25p80",
72 .max_speed_hz = 50000000,
73 .bus_num = 0,
74 .chip_select = 1,
75 .mode = 0,
76 .platform_data = &db1200_spiflash_data,
77 },
78 };
79
80 static struct i2c_board_info db1200_i2c_devs[] __initdata = {
81 {
82 /* AT24C04-10 I2C eeprom */
83 I2C_BOARD_INFO("24c04", 0x52),
84 },
85 {
86 /* Philips NE1619 temp/voltage sensor (adm1025 drv) */
87 I2C_BOARD_INFO("ne1619", 0x2d),
88 },
89 {
90 /* I2S audio codec WM8731 */
91 I2C_BOARD_INFO("wm8731", 0x1b),
92 },
93 };
94
95 /**********************************************************************/
96
97 static void au1200_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
98 unsigned int ctrl)
99 {
100 struct nand_chip *this = mtd->priv;
101 unsigned long ioaddr = (unsigned long)this->IO_ADDR_W;
102
103 ioaddr &= 0xffffff00;
104
105 if (ctrl & NAND_CLE) {
106 ioaddr += MEM_STNAND_CMD;
107 } else if (ctrl & NAND_ALE) {
108 ioaddr += MEM_STNAND_ADDR;
109 } else {
110 /* assume we want to r/w real data by default */
111 ioaddr += MEM_STNAND_DATA;
112 }
113 this->IO_ADDR_R = this->IO_ADDR_W = (void __iomem *)ioaddr;
114 if (cmd != NAND_CMD_NONE) {
115 __raw_writeb(cmd, this->IO_ADDR_W);
116 wmb();
117 }
118 }
119
120 static int au1200_nand_device_ready(struct mtd_info *mtd)
121 {
122 return __raw_readl((void __iomem *)MEM_STSTAT) & 1;
123 }
124
125 static const char *db1200_part_probes[] = { "cmdlinepart", NULL };
126
127 static struct mtd_partition db1200_nand_parts[] = {
128 {
129 .name = "NAND FS 0",
130 .offset = 0,
131 .size = 8 * 1024 * 1024,
132 },
133 {
134 .name = "NAND FS 1",
135 .offset = MTDPART_OFS_APPEND,
136 .size = MTDPART_SIZ_FULL
137 },
138 };
139
140 struct platform_nand_data db1200_nand_platdata = {
141 .chip = {
142 .nr_chips = 1,
143 .chip_offset = 0,
144 .nr_partitions = ARRAY_SIZE(db1200_nand_parts),
145 .partitions = db1200_nand_parts,
146 .chip_delay = 20,
147 .part_probe_types = db1200_part_probes,
148 },
149 .ctrl = {
150 .dev_ready = au1200_nand_device_ready,
151 .cmd_ctrl = au1200_nand_cmd_ctrl,
152 },
153 };
154
155 static struct resource db1200_nand_res[] = {
156 [0] = {
157 .start = DB1200_NAND_PHYS_ADDR,
158 .end = DB1200_NAND_PHYS_ADDR + 0xff,
159 .flags = IORESOURCE_MEM,
160 },
161 };
162
163 static struct platform_device db1200_nand_dev = {
164 .name = "gen_nand",
165 .num_resources = ARRAY_SIZE(db1200_nand_res),
166 .resource = db1200_nand_res,
167 .id = -1,
168 .dev = {
169 .platform_data = &db1200_nand_platdata,
170 }
171 };
172
173 /**********************************************************************/
174
175 static struct smc91x_platdata db1200_eth_data = {
176 .flags = SMC91X_NOWAIT | SMC91X_USE_16BIT,
177 .leda = RPC_LED_100_10,
178 .ledb = RPC_LED_TX_RX,
179 };
180
181 static struct resource db1200_eth_res[] = {
182 [0] = {
183 .start = DB1200_ETH_PHYS_ADDR,
184 .end = DB1200_ETH_PHYS_ADDR + 0xf,
185 .flags = IORESOURCE_MEM,
186 },
187 [1] = {
188 .start = DB1200_ETH_INT,
189 .end = DB1200_ETH_INT,
190 .flags = IORESOURCE_IRQ,
191 },
192 };
193
194 static struct platform_device db1200_eth_dev = {
195 .dev = {
196 .platform_data = &db1200_eth_data,
197 },
198 .name = "smc91x",
199 .id = -1,
200 .num_resources = ARRAY_SIZE(db1200_eth_res),
201 .resource = db1200_eth_res,
202 };
203
204 /**********************************************************************/
205
206 static struct resource db1200_ide_res[] = {
207 [0] = {
208 .start = DB1200_IDE_PHYS_ADDR,
209 .end = DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1,
210 .flags = IORESOURCE_MEM,
211 },
212 [1] = {
213 .start = DB1200_IDE_INT,
214 .end = DB1200_IDE_INT,
215 .flags = IORESOURCE_IRQ,
216 }
217 };
218
219 static u64 ide_dmamask = DMA_BIT_MASK(32);
220
221 static struct platform_device db1200_ide_dev = {
222 .name = "au1200-ide",
223 .id = 0,
224 .dev = {
225 .dma_mask = &ide_dmamask,
226 .coherent_dma_mask = DMA_BIT_MASK(32),
227 },
228 .num_resources = ARRAY_SIZE(db1200_ide_res),
229 .resource = db1200_ide_res,
230 };
231
232 /**********************************************************************/
233
234 static struct platform_device db1200_rtc_dev = {
235 .name = "rtc-au1xxx",
236 .id = -1,
237 };
238
239 /**********************************************************************/
240
241 /* SD carddetects: they're supposed to be edge-triggered, but ack
242 * doesn't seem to work (CPLD Rev 2). Instead, the screaming one
243 * is disabled and its counterpart enabled. The 500ms timeout is
244 * because the carddetect isn't debounced in hardware.
245 */
246 static irqreturn_t db1200_mmc_cd(int irq, void *ptr)
247 {
248 void(*mmc_cd)(struct mmc_host *, unsigned long);
249
250 if (irq == DB1200_SD0_INSERT_INT) {
251 disable_irq_nosync(DB1200_SD0_INSERT_INT);
252 enable_irq(DB1200_SD0_EJECT_INT);
253 } else {
254 disable_irq_nosync(DB1200_SD0_EJECT_INT);
255 enable_irq(DB1200_SD0_INSERT_INT);
256 }
257
258 /* link against CONFIG_MMC=m */
259 mmc_cd = symbol_get(mmc_detect_change);
260 if (mmc_cd) {
261 mmc_cd(ptr, msecs_to_jiffies(500));
262 symbol_put(mmc_detect_change);
263 }
264
265 return IRQ_HANDLED;
266 }
267
268 static int db1200_mmc_cd_setup(void *mmc_host, int en)
269 {
270 int ret;
271
272 if (en) {
273 ret = request_irq(DB1200_SD0_INSERT_INT, db1200_mmc_cd,
274 IRQF_DISABLED, "sd_insert", mmc_host);
275 if (ret)
276 goto out;
277
278 ret = request_irq(DB1200_SD0_EJECT_INT, db1200_mmc_cd,
279 IRQF_DISABLED, "sd_eject", mmc_host);
280 if (ret) {
281 free_irq(DB1200_SD0_INSERT_INT, mmc_host);
282 goto out;
283 }
284
285 if (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT)
286 enable_irq(DB1200_SD0_EJECT_INT);
287 else
288 enable_irq(DB1200_SD0_INSERT_INT);
289
290 } else {
291 free_irq(DB1200_SD0_INSERT_INT, mmc_host);
292 free_irq(DB1200_SD0_EJECT_INT, mmc_host);
293 }
294 ret = 0;
295 out:
296 return ret;
297 }
298
299 static void db1200_mmc_set_power(void *mmc_host, int state)
300 {
301 if (state) {
302 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR);
303 msleep(400); /* stabilization time */
304 } else
305 bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0);
306 }
307
308 static int db1200_mmc_card_readonly(void *mmc_host)
309 {
310 return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 1 : 0;
311 }
312
313 static int db1200_mmc_card_inserted(void *mmc_host)
314 {
315 return (bcsr_read(BCSR_SIGSTAT) & BCSR_INT_SD0INSERT) ? 1 : 0;
316 }
317
318 static void db1200_mmcled_set(struct led_classdev *led,
319 enum led_brightness brightness)
320 {
321 if (brightness != LED_OFF)
322 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
323 else
324 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
325 }
326
327 static struct led_classdev db1200_mmc_led = {
328 .brightness_set = db1200_mmcled_set,
329 };
330
331 /* needed by arch/mips/alchemy/common/platform.c */
332 struct au1xmmc_platform_data au1xmmc_platdata[] = {
333 [0] = {
334 .cd_setup = db1200_mmc_cd_setup,
335 .set_power = db1200_mmc_set_power,
336 .card_inserted = db1200_mmc_card_inserted,
337 .card_readonly = db1200_mmc_card_readonly,
338 .led = &db1200_mmc_led,
339 },
340 };
341
342 /**********************************************************************/
343
344 static struct resource au1200_psc0_res[] = {
345 [0] = {
346 .start = PSC0_PHYS_ADDR,
347 .end = PSC0_PHYS_ADDR + 0x000fffff,
348 .flags = IORESOURCE_MEM,
349 },
350 [1] = {
351 .start = AU1200_PSC0_INT,
352 .end = AU1200_PSC0_INT,
353 .flags = IORESOURCE_IRQ,
354 },
355 [2] = {
356 .start = DSCR_CMD0_PSC0_TX,
357 .end = DSCR_CMD0_PSC0_TX,
358 .flags = IORESOURCE_DMA,
359 },
360 [3] = {
361 .start = DSCR_CMD0_PSC0_RX,
362 .end = DSCR_CMD0_PSC0_RX,
363 .flags = IORESOURCE_DMA,
364 },
365 };
366
367 static struct platform_device db1200_i2c_dev = {
368 .name = "au1xpsc_smbus",
369 .id = 0, /* bus number */
370 .num_resources = ARRAY_SIZE(au1200_psc0_res),
371 .resource = au1200_psc0_res,
372 };
373
374 static void db1200_spi_cs_en(struct au1550_spi_info *spi, int cs, int pol)
375 {
376 if (cs)
377 bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_SPISEL);
378 else
379 bcsr_mod(BCSR_RESETS, BCSR_RESETS_SPISEL, 0);
380 }
381
382 static struct au1550_spi_info db1200_spi_platdata = {
383 .mainclk_hz = 50000000, /* PSC0 clock */
384 .num_chipselect = 2,
385 .activate_cs = db1200_spi_cs_en,
386 };
387
388 static u64 spi_dmamask = DMA_BIT_MASK(32);
389
390 static struct platform_device db1200_spi_dev = {
391 .dev = {
392 .dma_mask = &spi_dmamask,
393 .coherent_dma_mask = DMA_BIT_MASK(32),
394 .platform_data = &db1200_spi_platdata,
395 },
396 .name = "au1550-spi",
397 .id = 0, /* bus number */
398 .num_resources = ARRAY_SIZE(au1200_psc0_res),
399 .resource = au1200_psc0_res,
400 };
401
402 static struct resource au1200_psc1_res[] = {
403 [0] = {
404 .start = PSC1_PHYS_ADDR,
405 .end = PSC1_PHYS_ADDR + 0x000fffff,
406 .flags = IORESOURCE_MEM,
407 },
408 [1] = {
409 .start = AU1200_PSC1_INT,
410 .end = AU1200_PSC1_INT,
411 .flags = IORESOURCE_IRQ,
412 },
413 [2] = {
414 .start = DSCR_CMD0_PSC1_TX,
415 .end = DSCR_CMD0_PSC1_TX,
416 .flags = IORESOURCE_DMA,
417 },
418 [3] = {
419 .start = DSCR_CMD0_PSC1_RX,
420 .end = DSCR_CMD0_PSC1_RX,
421 .flags = IORESOURCE_DMA,
422 },
423 };
424
425 /* AC97 or I2S device */
426 static struct platform_device db1200_audio_dev = {
427 /* name assigned later based on switch setting */
428 .id = 1, /* PSC ID */
429 .num_resources = ARRAY_SIZE(au1200_psc1_res),
430 .resource = au1200_psc1_res,
431 };
432
433 /* DB1200 ASoC card device */
434 static struct platform_device db1200_sound_dev = {
435 /* name assigned later based on switch setting */
436 .id = 1, /* PSC ID */
437 };
438
439 static struct platform_device db1200_stac_dev = {
440 .name = "ac97-codec",
441 .id = 1, /* on PSC1 */
442 };
443
444 static struct platform_device db1200_audiodma_dev = {
445 .name = "au1xpsc-pcm",
446 .id = 1, /* PSC ID */
447 };
448
449 static struct platform_device *db1200_devs[] __initdata = {
450 NULL, /* PSC0, selected by S6.8 */
451 &db1200_ide_dev,
452 &db1200_eth_dev,
453 &db1200_rtc_dev,
454 &db1200_nand_dev,
455 &db1200_audiodma_dev,
456 &db1200_audio_dev,
457 &db1200_stac_dev,
458 &db1200_sound_dev,
459 };
460
461 static int __init db1200_dev_init(void)
462 {
463 unsigned long pfc;
464 unsigned short sw;
465 int swapped;
466
467 i2c_register_board_info(0, db1200_i2c_devs,
468 ARRAY_SIZE(db1200_i2c_devs));
469 spi_register_board_info(db1200_spi_devs,
470 ARRAY_SIZE(db1200_i2c_devs));
471
472 /* SWITCHES: S6.8 I2C/SPI selector (OFF=I2C ON=SPI)
473 * S6.7 AC97/I2S selector (OFF=AC97 ON=I2S)
474 */
475
476 /* NOTE: GPIO215 controls OTG VBUS supply. In SPI mode however
477 * this pin is claimed by PSC0 (unused though, but pinmux doesn't
478 * allow to free it without crippling the SPI interface).
479 * As a result, in SPI mode, OTG simply won't work (PSC0 uses
480 * it as an input pin which is pulled high on the boards).
481 */
482 pfc = __raw_readl((void __iomem *)SYS_PINFUNC) & ~SYS_PINFUNC_P0A;
483
484 /* switch off OTG VBUS supply */
485 gpio_request(215, "otg-vbus");
486 gpio_direction_output(215, 1);
487
488 printk(KERN_INFO "DB1200 device configuration:\n");
489
490 sw = bcsr_read(BCSR_SWITCHES);
491 if (sw & BCSR_SWITCHES_DIP_8) {
492 db1200_devs[0] = &db1200_i2c_dev;
493 bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC0MUX, 0);
494
495 pfc |= (2 << 17); /* GPIO2 block owns GPIO215 */
496
497 printk(KERN_INFO " S6.8 OFF: PSC0 mode I2C\n");
498 printk(KERN_INFO " OTG port VBUS supply available!\n");
499 } else {
500 db1200_devs[0] = &db1200_spi_dev;
501 bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC0MUX);
502
503 pfc |= (1 << 17); /* PSC0 owns GPIO215 */
504
505 printk(KERN_INFO " S6.8 ON : PSC0 mode SPI\n");
506 printk(KERN_INFO " OTG port VBUS supply disabled\n");
507 }
508 __raw_writel(pfc, (void __iomem *)SYS_PINFUNC);
509 wmb();
510
511 /* Audio: DIP7 selects I2S(0)/AC97(1), but need I2C for I2S!
512 * so: DIP7=1 || DIP8=0 => AC97, DIP7=0 && DIP8=1 => I2S
513 */
514 sw &= BCSR_SWITCHES_DIP_8 | BCSR_SWITCHES_DIP_7;
515 if (sw == BCSR_SWITCHES_DIP_8) {
516 bcsr_mod(BCSR_RESETS, 0, BCSR_RESETS_PSC1MUX);
517 db1200_audio_dev.name = "au1xpsc_i2s";
518 db1200_sound_dev.name = "db1200-i2s";
519 printk(KERN_INFO " S6.7 ON : PSC1 mode I2S\n");
520 } else {
521 bcsr_mod(BCSR_RESETS, BCSR_RESETS_PSC1MUX, 0);
522 db1200_audio_dev.name = "au1xpsc_ac97";
523 db1200_sound_dev.name = "db1200-ac97";
524 printk(KERN_INFO " S6.7 OFF: PSC1 mode AC97\n");
525 }
526
527 /* Audio PSC clock is supplied externally. (FIXME: platdata!!) */
528 __raw_writel(PSC_SEL_CLK_SERCLK,
529 (void __iomem *)KSEG1ADDR(PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);
530 wmb();
531
532 db1x_register_pcmcia_socket(PCMCIA_ATTR_PHYS_ADDR,
533 PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
534 PCMCIA_MEM_PHYS_ADDR,
535 PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
536 PCMCIA_IO_PHYS_ADDR,
537 PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1,
538 DB1200_PC0_INT,
539 DB1200_PC0_INSERT_INT,
540 /*DB1200_PC0_STSCHG_INT*/0,
541 DB1200_PC0_EJECT_INT,
542 0);
543
544 db1x_register_pcmcia_socket(PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
545 PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
546 PCMCIA_MEM_PHYS_ADDR + 0x004000000,
547 PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1,
548 PCMCIA_IO_PHYS_ADDR + 0x004000000,
549 PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1,
550 DB1200_PC1_INT,
551 DB1200_PC1_INSERT_INT,
552 /*DB1200_PC1_STSCHG_INT*/0,
553 DB1200_PC1_EJECT_INT,
554 1);
555
556 swapped = bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1200_SWAPBOOT;
557 db1x_register_norflash(64 << 20, 2, swapped);
558
559 return platform_add_devices(db1200_devs, ARRAY_SIZE(db1200_devs));
560 }
561 device_initcall(db1200_dev_init);
562
563 /* au1200fb calls these: STERBT EINEN TRAGISCHEN TOD!!! */
564 int board_au1200fb_panel(void)
565 {
566 return (bcsr_read(BCSR_SWITCHES) >> 8) & 0x0f;
567 }
568
569 int board_au1200fb_panel_init(void)
570 {
571 /* Apply power */
572 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
573 BCSR_BOARD_LCDBL);
574 return 0;
575 }
576
577 int board_au1200fb_panel_shutdown(void)
578 {
579 /* Remove power */
580 bcsr_mod(BCSR_BOARD, BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
581 BCSR_BOARD_LCDBL, 0);
582 return 0;
583 }