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-rw-r--r--arch/mips/alchemy/devboards/db1000.c565
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diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
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1/*
2 * DBAu1000/1500/1100 board support
3 *
4 * Copyright 2000, 2008 MontaVista Software Inc.
5 * Author: MontaVista Software, Inc. <source@mvista.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <linux/dma-mapping.h>
23#include <linux/gpio.h>
24#include <linux/init.h>
25#include <linux/interrupt.h>
26#include <linux/leds.h>
27#include <linux/mmc/host.h>
28#include <linux/module.h>
29#include <linux/platform_device.h>
30#include <linux/pm.h>
31#include <linux/spi/spi.h>
32#include <linux/spi/spi_gpio.h>
33#include <linux/spi/ads7846.h>
34#include <asm/mach-au1x00/au1000.h>
35#include <asm/mach-au1x00/au1000_dma.h>
36#include <asm/mach-au1x00/au1100_mmc.h>
37#include <asm/mach-db1x00/bcsr.h>
38#include <asm/reboot.h>
39#include <prom.h>
40#include "platform.h"
41
42#define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT)
43
44struct pci_dev;
45
46static const char *board_type_str(void)
47{
48 switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
49 case BCSR_WHOAMI_DB1000:
50 return "DB1000";
51 case BCSR_WHOAMI_DB1500:
52 return "DB1500";
53 case BCSR_WHOAMI_DB1100:
54 return "DB1100";
55 default:
56 return "(unknown)";
57 }
58}
59
60const char *get_system_type(void)
61{
62 return board_type_str();
63}
64
65void __init board_setup(void)
66{
67 /* initialize board register space */
68 bcsr_init(DB1000_BCSR_PHYS_ADDR,
69 DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS);
70
71 printk(KERN_INFO "AMD Alchemy %s Board\n", board_type_str());
72}
73
74
75static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
76{
77 if ((slot < 12) || (slot > 13) || pin == 0)
78 return -1;
79 if (slot == 12)
80 return (pin == 1) ? AU1500_PCI_INTA : 0xff;
81 if (slot == 13) {
82 switch (pin) {
83 case 1: return AU1500_PCI_INTA;
84 case 2: return AU1500_PCI_INTB;
85 case 3: return AU1500_PCI_INTC;
86 case 4: return AU1500_PCI_INTD;
87 }
88 }
89 return -1;
90}
91
92static struct resource alchemy_pci_host_res[] = {
93 [0] = {
94 .start = AU1500_PCI_PHYS_ADDR,
95 .end = AU1500_PCI_PHYS_ADDR + 0xfff,
96 .flags = IORESOURCE_MEM,
97 },
98};
99
100static struct alchemy_pci_platdata db1500_pci_pd = {
101 .board_map_irq = db1500_map_pci_irq,
102};
103
104static struct platform_device db1500_pci_host_dev = {
105 .dev.platform_data = &db1500_pci_pd,
106 .name = "alchemy-pci",
107 .id = 0,
108 .num_resources = ARRAY_SIZE(alchemy_pci_host_res),
109 .resource = alchemy_pci_host_res,
110};
111
112static int __init db1500_pci_init(void)
113{
114 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1500)
115 return platform_device_register(&db1500_pci_host_dev);
116 return 0;
117}
118/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
119arch_initcall(db1500_pci_init);
120
121
122static struct resource au1100_lcd_resources[] = {
123 [0] = {
124 .start = AU1100_LCD_PHYS_ADDR,
125 .end = AU1100_LCD_PHYS_ADDR + 0x800 - 1,
126 .flags = IORESOURCE_MEM,
127 },
128 [1] = {
129 .start = AU1100_LCD_INT,
130 .end = AU1100_LCD_INT,
131 .flags = IORESOURCE_IRQ,
132 }
133};
134
135static u64 au1100_lcd_dmamask = DMA_BIT_MASK(32);
136
137static struct platform_device au1100_lcd_device = {
138 .name = "au1100-lcd",
139 .id = 0,
140 .dev = {
141 .dma_mask = &au1100_lcd_dmamask,
142 .coherent_dma_mask = DMA_BIT_MASK(32),
143 },
144 .num_resources = ARRAY_SIZE(au1100_lcd_resources),
145 .resource = au1100_lcd_resources,
146};
147
148static struct resource alchemy_ac97c_res[] = {
149 [0] = {
150 .start = AU1000_AC97_PHYS_ADDR,
151 .end = AU1000_AC97_PHYS_ADDR + 0xfff,
152 .flags = IORESOURCE_MEM,
153 },
154 [1] = {
155 .start = DMA_ID_AC97C_TX,
156 .end = DMA_ID_AC97C_TX,
157 .flags = IORESOURCE_DMA,
158 },
159 [2] = {
160 .start = DMA_ID_AC97C_RX,
161 .end = DMA_ID_AC97C_RX,
162 .flags = IORESOURCE_DMA,
163 },
164};
165
166static struct platform_device alchemy_ac97c_dev = {
167 .name = "alchemy-ac97c",
168 .id = -1,
169 .resource = alchemy_ac97c_res,
170 .num_resources = ARRAY_SIZE(alchemy_ac97c_res),
171};
172
173static struct platform_device alchemy_ac97c_dma_dev = {
174 .name = "alchemy-pcm-dma",
175 .id = 0,
176};
177
178static struct platform_device db1x00_codec_dev = {
179 .name = "ac97-codec",
180 .id = -1,
181};
182
183static struct platform_device db1x00_audio_dev = {
184 .name = "db1000-audio",
185};
186
187/******************************************************************************/
188
189static irqreturn_t db1100_mmc_cd(int irq, void *ptr)
190{
191 void (*mmc_cd)(struct mmc_host *, unsigned long);
192 /* link against CONFIG_MMC=m */
193 mmc_cd = symbol_get(mmc_detect_change);
194 mmc_cd(ptr, msecs_to_jiffies(500));
195 symbol_put(mmc_detect_change);
196
197 return IRQ_HANDLED;
198}
199
200static int db1100_mmc_cd_setup(void *mmc_host, int en)
201{
202 int ret = 0;
203
204 if (en) {
205 irq_set_irq_type(AU1100_GPIO19_INT, IRQ_TYPE_EDGE_BOTH);
206 ret = request_irq(AU1100_GPIO19_INT, db1100_mmc_cd, 0,
207 "sd0_cd", mmc_host);
208 } else
209 free_irq(AU1100_GPIO19_INT, mmc_host);
210 return ret;
211}
212
213static int db1100_mmc1_cd_setup(void *mmc_host, int en)
214{
215 int ret = 0;
216
217 if (en) {
218 irq_set_irq_type(AU1100_GPIO20_INT, IRQ_TYPE_EDGE_BOTH);
219 ret = request_irq(AU1100_GPIO20_INT, db1100_mmc_cd, 0,
220 "sd1_cd", mmc_host);
221 } else
222 free_irq(AU1100_GPIO20_INT, mmc_host);
223 return ret;
224}
225
226static int db1100_mmc_card_readonly(void *mmc_host)
227{
228 /* testing suggests that this bit is inverted */
229 return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1;
230}
231
232static int db1100_mmc_card_inserted(void *mmc_host)
233{
234 return !alchemy_gpio_get_value(19);
235}
236
237static void db1100_mmc_set_power(void *mmc_host, int state)
238{
239 if (state) {
240 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD0PWR);
241 msleep(400); /* stabilization time */
242 } else
243 bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD0PWR, 0);
244}
245
246static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b)
247{
248 if (b != LED_OFF)
249 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
250 else
251 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
252}
253
254static struct led_classdev db1100_mmc_led = {
255 .brightness_set = db1100_mmcled_set,
256};
257
258static int db1100_mmc1_card_readonly(void *mmc_host)
259{
260 return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0;
261}
262
263static int db1100_mmc1_card_inserted(void *mmc_host)
264{
265 return !alchemy_gpio_get_value(20);
266}
267
268static void db1100_mmc1_set_power(void *mmc_host, int state)
269{
270 if (state) {
271 bcsr_mod(BCSR_BOARD, 0, BCSR_BOARD_SD1PWR);
272 msleep(400); /* stabilization time */
273 } else
274 bcsr_mod(BCSR_BOARD, BCSR_BOARD_SD1PWR, 0);
275}
276
277static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b)
278{
279 if (b != LED_OFF)
280 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
281 else
282 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
283}
284
285static struct led_classdev db1100_mmc1_led = {
286 .brightness_set = db1100_mmc1led_set,
287};
288
289static struct au1xmmc_platform_data db1100_mmc_platdata[2] = {
290 [0] = {
291 .cd_setup = db1100_mmc_cd_setup,
292 .set_power = db1100_mmc_set_power,
293 .card_inserted = db1100_mmc_card_inserted,
294 .card_readonly = db1100_mmc_card_readonly,
295 .led = &db1100_mmc_led,
296 },
297 [1] = {
298 .cd_setup = db1100_mmc1_cd_setup,
299 .set_power = db1100_mmc1_set_power,
300 .card_inserted = db1100_mmc1_card_inserted,
301 .card_readonly = db1100_mmc1_card_readonly,
302 .led = &db1100_mmc1_led,
303 },
304};
305
306static struct resource au1100_mmc0_resources[] = {
307 [0] = {
308 .start = AU1100_SD0_PHYS_ADDR,
309 .end = AU1100_SD0_PHYS_ADDR + 0xfff,
310 .flags = IORESOURCE_MEM,
311 },
312 [1] = {
313 .start = AU1100_SD_INT,
314 .end = AU1100_SD_INT,
315 .flags = IORESOURCE_IRQ,
316 },
317 [2] = {
318 .start = DMA_ID_SD0_TX,
319 .end = DMA_ID_SD0_TX,
320 .flags = IORESOURCE_DMA,
321 },
322 [3] = {
323 .start = DMA_ID_SD0_RX,
324 .end = DMA_ID_SD0_RX,
325 .flags = IORESOURCE_DMA,
326 }
327};
328
329static u64 au1xxx_mmc_dmamask = DMA_BIT_MASK(32);
330
331static struct platform_device db1100_mmc0_dev = {
332 .name = "au1xxx-mmc",
333 .id = 0,
334 .dev = {
335 .dma_mask = &au1xxx_mmc_dmamask,
336 .coherent_dma_mask = DMA_BIT_MASK(32),
337 .platform_data = &db1100_mmc_platdata[0],
338 },
339 .num_resources = ARRAY_SIZE(au1100_mmc0_resources),
340 .resource = au1100_mmc0_resources,
341};
342
343static struct resource au1100_mmc1_res[] = {
344 [0] = {
345 .start = AU1100_SD1_PHYS_ADDR,
346 .end = AU1100_SD1_PHYS_ADDR + 0xfff,
347 .flags = IORESOURCE_MEM,
348 },
349 [1] = {
350 .start = AU1100_SD_INT,
351 .end = AU1100_SD_INT,
352 .flags = IORESOURCE_IRQ,
353 },
354 [2] = {
355 .start = DMA_ID_SD1_TX,
356 .end = DMA_ID_SD1_TX,
357 .flags = IORESOURCE_DMA,
358 },
359 [3] = {
360 .start = DMA_ID_SD1_RX,
361 .end = DMA_ID_SD1_RX,
362 .flags = IORESOURCE_DMA,
363 }
364};
365
366static struct platform_device db1100_mmc1_dev = {
367 .name = "au1xxx-mmc",
368 .id = 1,
369 .dev = {
370 .dma_mask = &au1xxx_mmc_dmamask,
371 .coherent_dma_mask = DMA_BIT_MASK(32),
372 .platform_data = &db1100_mmc_platdata[1],
373 },
374 .num_resources = ARRAY_SIZE(au1100_mmc1_res),
375 .resource = au1100_mmc1_res,
376};
377
378/******************************************************************************/
379
380static void db1000_irda_set_phy_mode(int mode)
381{
382 unsigned short mask = BCSR_RESETS_IRDA_MODE_MASK | BCSR_RESETS_FIR_SEL;
383
384 switch (mode) {
385 case AU1000_IRDA_PHY_MODE_OFF:
386 bcsr_mod(BCSR_RESETS, mask, BCSR_RESETS_IRDA_MODE_OFF);
387 break;
388 case AU1000_IRDA_PHY_MODE_SIR:
389 bcsr_mod(BCSR_RESETS, mask, BCSR_RESETS_IRDA_MODE_FULL);
390 break;
391 case AU1000_IRDA_PHY_MODE_FIR:
392 bcsr_mod(BCSR_RESETS, mask, BCSR_RESETS_IRDA_MODE_FULL |
393 BCSR_RESETS_FIR_SEL);
394 break;
395 }
396}
397
398static struct au1k_irda_platform_data db1000_irda_platdata = {
399 .set_phy_mode = db1000_irda_set_phy_mode,
400};
401
402static struct resource au1000_irda_res[] = {
403 [0] = {
404 .start = AU1000_IRDA_PHYS_ADDR,
405 .end = AU1000_IRDA_PHYS_ADDR + 0x0fff,
406 .flags = IORESOURCE_MEM,
407 },
408 [1] = {
409 .start = AU1000_IRDA_TX_INT,
410 .end = AU1000_IRDA_TX_INT,
411 .flags = IORESOURCE_IRQ,
412 },
413 [2] = {
414 .start = AU1000_IRDA_RX_INT,
415 .end = AU1000_IRDA_RX_INT,
416 .flags = IORESOURCE_IRQ,
417 },
418};
419
420static struct platform_device db1000_irda_dev = {
421 .name = "au1000-irda",
422 .id = -1,
423 .dev = {
424 .platform_data = &db1000_irda_platdata,
425 },
426 .resource = au1000_irda_res,
427 .num_resources = ARRAY_SIZE(au1000_irda_res),
428};
429
430/******************************************************************************/
431
432static struct ads7846_platform_data db1100_touch_pd = {
433 .model = 7846,
434 .vref_mv = 3300,
435 .gpio_pendown = 21,
436};
437
438static struct spi_gpio_platform_data db1100_spictl_pd = {
439 .sck = 209,
440 .mosi = 208,
441 .miso = 207,
442 .num_chipselect = 1,
443};
444
445static struct spi_board_info db1100_spi_info[] __initdata = {
446 [0] = {
447 .modalias = "ads7846",
448 .max_speed_hz = 3250000,
449 .bus_num = 0,
450 .chip_select = 0,
451 .mode = 0,
452 .irq = AU1100_GPIO21_INT,
453 .platform_data = &db1100_touch_pd,
454 .controller_data = (void *)210, /* for spi_gpio: CS# GPIO210 */
455 },
456};
457
458static struct platform_device db1100_spi_dev = {
459 .name = "spi_gpio",
460 .id = 0,
461 .dev = {
462 .platform_data = &db1100_spictl_pd,
463 },
464};
465
466
467static struct platform_device *db1x00_devs[] = {
468 &db1x00_codec_dev,
469 &alchemy_ac97c_dma_dev,
470 &alchemy_ac97c_dev,
471 &db1x00_audio_dev,
472};
473
474static struct platform_device *db1000_devs[] = {
475 &db1000_irda_dev,
476};
477
478static struct platform_device *db1100_devs[] = {
479 &au1100_lcd_device,
480 &db1100_mmc0_dev,
481 &db1100_mmc1_dev,
482 &db1000_irda_dev,
483 &db1100_spi_dev,
484};
485
486static int __init db1000_dev_init(void)
487{
488 int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
489 int c0, c1, d0, d1, s0, s1;
490 unsigned long pfc;
491
492 if (board == BCSR_WHOAMI_DB1500) {
493 c0 = AU1500_GPIO2_INT;
494 c1 = AU1500_GPIO5_INT;
495 d0 = AU1500_GPIO0_INT;
496 d1 = AU1500_GPIO3_INT;
497 s0 = AU1500_GPIO1_INT;
498 s1 = AU1500_GPIO4_INT;
499 } else if (board == BCSR_WHOAMI_DB1100) {
500 c0 = AU1100_GPIO2_INT;
501 c1 = AU1100_GPIO5_INT;
502 d0 = AU1100_GPIO0_INT;
503 d1 = AU1100_GPIO3_INT;
504 s0 = AU1100_GPIO1_INT;
505 s1 = AU1100_GPIO4_INT;
506
507 gpio_direction_input(19); /* sd0 cd# */
508 gpio_direction_input(20); /* sd1 cd# */
509 gpio_direction_input(21); /* touch pendown# */
510 gpio_direction_input(207); /* SPI MISO */
511 gpio_direction_output(208, 0); /* SPI MOSI */
512 gpio_direction_output(209, 1); /* SPI SCK */
513 gpio_direction_output(210, 1); /* SPI CS# */
514
515 /* spi_gpio on SSI0 pins */
516 pfc = __raw_readl((void __iomem *)SYS_PINFUNC);
517 pfc |= (1 << 0); /* SSI0 pins as GPIOs */
518 __raw_writel(pfc, (void __iomem *)SYS_PINFUNC);
519 wmb();
520
521 spi_register_board_info(db1100_spi_info,
522 ARRAY_SIZE(db1100_spi_info));
523
524 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
525 } else if (board == BCSR_WHOAMI_DB1000) {
526 c0 = AU1000_GPIO2_INT;
527 c1 = AU1000_GPIO5_INT;
528 d0 = AU1000_GPIO0_INT;
529 d1 = AU1000_GPIO3_INT;
530 s0 = AU1000_GPIO1_INT;
531 s1 = AU1000_GPIO4_INT;
532 platform_add_devices(db1000_devs, ARRAY_SIZE(db1000_devs));
533 } else
534 return 0; /* unknown board, no further dev setup to do */
535
536 irq_set_irq_type(d0, IRQ_TYPE_EDGE_BOTH);
537 irq_set_irq_type(d1, IRQ_TYPE_EDGE_BOTH);
538 irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW);
539 irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW);
540 irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW);
541 irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW);
542
543 db1x_register_pcmcia_socket(
544 AU1000_PCMCIA_ATTR_PHYS_ADDR,
545 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
546 AU1000_PCMCIA_MEM_PHYS_ADDR,
547 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
548 AU1000_PCMCIA_IO_PHYS_ADDR,
549 AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1,
550 c0, d0, /*s0*/0, 0, 0);
551
552 db1x_register_pcmcia_socket(
553 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
554 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
555 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004000000,
556 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1,
557 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000,
558 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1,
559 c1, d1, /*s1*/0, 0, 1);
560
561 platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs));
562 db1x_register_norflash(32 << 20, 4 /* 32bit */, F_SWAPPED);
563 return 0;
564}
565device_initcall(db1000_dev_init);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-02 23:07:39 -0500