1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * DBAu1000/1500/1100 PBAu1100/1500 board support
4 *
5 * Copyright 2000, 2008 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc. <source@mvista.com>
7 */
8
9 #include <linux/clk.h>
10 #include <linux/dma-mapping.h>
11 #include <linux/gpio.h>
12 #include <linux/gpio/machine.h>
13 #include <linux/gpio/property.h>
14 #include <linux/init.h>
15 #include <linux/interrupt.h>
16 #include <linux/leds.h>
17 #include <linux/mmc/host.h>
18 #include <linux/platform_device.h>
19 #include <linux/property.h>
20 #include <linux/pm.h>
21 #include <linux/spi/spi.h>
22 #include <linux/spi/spi_gpio.h>
23 #include <asm/mach-au1x00/au1000.h>
24 #include <asm/mach-au1x00/gpio-au1000.h>
25 #include <asm/mach-au1x00/au1000_dma.h>
26 #include <asm/mach-au1x00/au1100_mmc.h>
27 #include <asm/mach-db1x00/bcsr.h>
28 #include <asm/reboot.h>
29 #include <prom.h>
30 #include "platform.h"
31
32 #define F_SWAPPED (bcsr_read(BCSR_STATUS) & BCSR_STATUS_DB1000_SWAPBOOT)
33
34 const char *get_system_type(void);
35
db1000_board_setup(void)36 int __init db1000_board_setup(void)
37 {
38 /* initialize board register space */
39 bcsr_init(DB1000_BCSR_PHYS_ADDR,
40 DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS);
41
42 switch (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI))) {
43 case BCSR_WHOAMI_DB1000:
44 case BCSR_WHOAMI_DB1500:
45 case BCSR_WHOAMI_DB1100:
46 case BCSR_WHOAMI_PB1500:
47 case BCSR_WHOAMI_PB1500R2:
48 case BCSR_WHOAMI_PB1100:
49 pr_info("AMD Alchemy %s Board\n", get_system_type());
50 return 0;
51 }
52 return -ENODEV;
53 }
54
db1500_map_pci_irq(const struct pci_dev * d,u8 slot,u8 pin)55 static int db1500_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
56 {
57 if ((slot < 12) || (slot > 13) || pin == 0)
58 return -1;
59 if (slot == 12)
60 return (pin == 1) ? AU1500_PCI_INTA : 0xff;
61 if (slot == 13) {
62 switch (pin) {
63 case 1: return AU1500_PCI_INTA;
64 case 2: return AU1500_PCI_INTB;
65 case 3: return AU1500_PCI_INTC;
66 case 4: return AU1500_PCI_INTD;
67 }
68 }
69 return -1;
70 }
71
72 static u64 au1xxx_all_dmamask = DMA_BIT_MASK(32);
73
74 static struct resource alchemy_pci_host_res[] = {
75 [0] = {
76 .start = AU1500_PCI_PHYS_ADDR,
77 .end = AU1500_PCI_PHYS_ADDR + 0xfff,
78 .flags = IORESOURCE_MEM,
79 },
80 };
81
82 static struct alchemy_pci_platdata db1500_pci_pd = {
83 .board_map_irq = db1500_map_pci_irq,
84 };
85
86 static struct platform_device db1500_pci_host_dev = {
87 .dev.platform_data = &db1500_pci_pd,
88 .name = "alchemy-pci",
89 .id = 0,
90 .num_resources = ARRAY_SIZE(alchemy_pci_host_res),
91 .resource = alchemy_pci_host_res,
92 };
93
db1500_pci_setup(void)94 int __init db1500_pci_setup(void)
95 {
96 return platform_device_register(&db1500_pci_host_dev);
97 }
98
99 static struct resource au1100_lcd_resources[] = {
100 [0] = {
101 .start = AU1100_LCD_PHYS_ADDR,
102 .end = AU1100_LCD_PHYS_ADDR + 0x800 - 1,
103 .flags = IORESOURCE_MEM,
104 },
105 [1] = {
106 .start = AU1100_LCD_INT,
107 .end = AU1100_LCD_INT,
108 .flags = IORESOURCE_IRQ,
109 }
110 };
111
112 static struct platform_device au1100_lcd_device = {
113 .name = "au1100-lcd",
114 .id = 0,
115 .dev = {
116 .dma_mask = &au1xxx_all_dmamask,
117 .coherent_dma_mask = DMA_BIT_MASK(32),
118 },
119 .num_resources = ARRAY_SIZE(au1100_lcd_resources),
120 .resource = au1100_lcd_resources,
121 };
122
123 static struct resource alchemy_ac97c_res[] = {
124 [0] = {
125 .start = AU1000_AC97_PHYS_ADDR,
126 .end = AU1000_AC97_PHYS_ADDR + 0xfff,
127 .flags = IORESOURCE_MEM,
128 },
129 [1] = {
130 .start = DMA_ID_AC97C_TX,
131 .end = DMA_ID_AC97C_TX,
132 .flags = IORESOURCE_DMA,
133 },
134 [2] = {
135 .start = DMA_ID_AC97C_RX,
136 .end = DMA_ID_AC97C_RX,
137 .flags = IORESOURCE_DMA,
138 },
139 };
140
141 static struct platform_device alchemy_ac97c_dev = {
142 .name = "alchemy-ac97c",
143 .id = -1,
144 .resource = alchemy_ac97c_res,
145 .num_resources = ARRAY_SIZE(alchemy_ac97c_res),
146 };
147
148 static struct platform_device alchemy_ac97c_dma_dev = {
149 .name = "alchemy-pcm-dma",
150 .id = 0,
151 };
152
153 static struct platform_device db1x00_codec_dev = {
154 .name = "ac97-codec",
155 .id = -1,
156 };
157
158 static struct platform_device db1x00_audio_dev = {
159 .name = "db1000-audio",
160 .dev = {
161 .dma_mask = &au1xxx_all_dmamask,
162 .coherent_dma_mask = DMA_BIT_MASK(32),
163 },
164 };
165
166 /******************************************************************************/
167
168 #ifdef CONFIG_MMC_AU1X
db1100_mmc_cd(int irq,void * ptr)169 static irqreturn_t db1100_mmc_cd(int irq, void *ptr)
170 {
171 mmc_detect_change(ptr, msecs_to_jiffies(500));
172 return IRQ_HANDLED;
173 }
174
db1100_mmc_cd_setup(void * mmc_host,int en)175 static int db1100_mmc_cd_setup(void *mmc_host, int en)
176 {
177 int ret = 0, irq;
178
179 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
180 irq = AU1100_GPIO19_INT;
181 else
182 irq = AU1100_GPIO14_INT; /* PB1100 SD0 CD# */
183
184 if (en) {
185 irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
186 ret = request_irq(irq, db1100_mmc_cd, 0,
187 "sd0_cd", mmc_host);
188 } else
189 free_irq(irq, mmc_host);
190 return ret;
191 }
192
db1100_mmc1_cd_setup(void * mmc_host,int en)193 static int db1100_mmc1_cd_setup(void *mmc_host, int en)
194 {
195 int ret = 0, irq;
196
197 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
198 irq = AU1100_GPIO20_INT;
199 else
200 irq = AU1100_GPIO15_INT; /* PB1100 SD1 CD# */
201
202 if (en) {
203 irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
204 ret = request_irq(irq, db1100_mmc_cd, 0,
205 "sd1_cd", mmc_host);
206 } else
207 free_irq(irq, mmc_host);
208 return ret;
209 }
210
db1100_mmc_card_readonly(void * mmc_host)211 static int db1100_mmc_card_readonly(void *mmc_host)
212 {
213 /* testing suggests that this bit is inverted */
214 return (bcsr_read(BCSR_STATUS) & BCSR_STATUS_SD0WP) ? 0 : 1;
215 }
216
db1100_mmc_card_inserted(void * mmc_host)217 static int db1100_mmc_card_inserted(void *mmc_host)
218 {
219 return !alchemy_gpio_get_value(19);
220 }
221
db1100_mmc_set_power(void * mmc_host,int state)222 static void db1100_mmc_set_power(void *mmc_host, int state)
223 {
224 int bit;
225
226 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
227 bit = BCSR_BOARD_SD0PWR;
228 else
229 bit = BCSR_BOARD_PB1100_SD0PWR;
230
231 if (state) {
232 bcsr_mod(BCSR_BOARD, 0, bit);
233 msleep(400); /* stabilization time */
234 } else
235 bcsr_mod(BCSR_BOARD, bit, 0);
236 }
237
db1100_mmcled_set(struct led_classdev * led,enum led_brightness b)238 static void db1100_mmcled_set(struct led_classdev *led, enum led_brightness b)
239 {
240 if (b != LED_OFF)
241 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED0, 0);
242 else
243 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED0);
244 }
245
246 static struct led_classdev db1100_mmc_led = {
247 .brightness_set = db1100_mmcled_set,
248 };
249
db1100_mmc1_card_readonly(void * mmc_host)250 static int db1100_mmc1_card_readonly(void *mmc_host)
251 {
252 return (bcsr_read(BCSR_BOARD) & BCSR_BOARD_SD1WP) ? 1 : 0;
253 }
254
db1100_mmc1_card_inserted(void * mmc_host)255 static int db1100_mmc1_card_inserted(void *mmc_host)
256 {
257 return !alchemy_gpio_get_value(20);
258 }
259
db1100_mmc1_set_power(void * mmc_host,int state)260 static void db1100_mmc1_set_power(void *mmc_host, int state)
261 {
262 int bit;
263
264 if (BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI)) == BCSR_WHOAMI_DB1100)
265 bit = BCSR_BOARD_SD1PWR;
266 else
267 bit = BCSR_BOARD_PB1100_SD1PWR;
268
269 if (state) {
270 bcsr_mod(BCSR_BOARD, 0, bit);
271 msleep(400); /* stabilization time */
272 } else
273 bcsr_mod(BCSR_BOARD, bit, 0);
274 }
275
db1100_mmc1led_set(struct led_classdev * led,enum led_brightness b)276 static void db1100_mmc1led_set(struct led_classdev *led, enum led_brightness b)
277 {
278 if (b != LED_OFF)
279 bcsr_mod(BCSR_LEDS, BCSR_LEDS_LED1, 0);
280 else
281 bcsr_mod(BCSR_LEDS, 0, BCSR_LEDS_LED1);
282 }
283
284 static struct led_classdev db1100_mmc1_led = {
285 .brightness_set = db1100_mmc1led_set,
286 };
287
288 static struct au1xmmc_platform_data db1100_mmc_platdata[2] = {
289 [0] = {
290 .cd_setup = db1100_mmc_cd_setup,
291 .set_power = db1100_mmc_set_power,
292 .card_inserted = db1100_mmc_card_inserted,
293 .card_readonly = db1100_mmc_card_readonly,
294 .led = &db1100_mmc_led,
295 },
296 [1] = {
297 .cd_setup = db1100_mmc1_cd_setup,
298 .set_power = db1100_mmc1_set_power,
299 .card_inserted = db1100_mmc1_card_inserted,
300 .card_readonly = db1100_mmc1_card_readonly,
301 .led = &db1100_mmc1_led,
302 },
303 };
304
305 static struct resource au1100_mmc0_resources[] = {
306 [0] = {
307 .start = AU1100_SD0_PHYS_ADDR,
308 .end = AU1100_SD0_PHYS_ADDR + 0xfff,
309 .flags = IORESOURCE_MEM,
310 },
311 [1] = {
312 .start = AU1100_SD_INT,
313 .end = AU1100_SD_INT,
314 .flags = IORESOURCE_IRQ,
315 },
316 [2] = {
317 .start = DMA_ID_SD0_TX,
318 .end = DMA_ID_SD0_TX,
319 .flags = IORESOURCE_DMA,
320 },
321 [3] = {
322 .start = DMA_ID_SD0_RX,
323 .end = DMA_ID_SD0_RX,
324 .flags = IORESOURCE_DMA,
325 }
326 };
327
328 static struct platform_device db1100_mmc0_dev = {
329 .name = "au1xxx-mmc",
330 .id = 0,
331 .dev = {
332 .dma_mask = &au1xxx_all_dmamask,
333 .coherent_dma_mask = DMA_BIT_MASK(32),
334 .platform_data = &db1100_mmc_platdata[0],
335 },
336 .num_resources = ARRAY_SIZE(au1100_mmc0_resources),
337 .resource = au1100_mmc0_resources,
338 };
339
340 static struct resource au1100_mmc1_res[] = {
341 [0] = {
342 .start = AU1100_SD1_PHYS_ADDR,
343 .end = AU1100_SD1_PHYS_ADDR + 0xfff,
344 .flags = IORESOURCE_MEM,
345 },
346 [1] = {
347 .start = AU1100_SD_INT,
348 .end = AU1100_SD_INT,
349 .flags = IORESOURCE_IRQ,
350 },
351 [2] = {
352 .start = DMA_ID_SD1_TX,
353 .end = DMA_ID_SD1_TX,
354 .flags = IORESOURCE_DMA,
355 },
356 [3] = {
357 .start = DMA_ID_SD1_RX,
358 .end = DMA_ID_SD1_RX,
359 .flags = IORESOURCE_DMA,
360 }
361 };
362
363 static struct platform_device db1100_mmc1_dev = {
364 .name = "au1xxx-mmc",
365 .id = 1,
366 .dev = {
367 .dma_mask = &au1xxx_all_dmamask,
368 .coherent_dma_mask = DMA_BIT_MASK(32),
369 .platform_data = &db1100_mmc_platdata[1],
370 },
371 .num_resources = ARRAY_SIZE(au1100_mmc1_res),
372 .resource = au1100_mmc1_res,
373 };
374 #endif /* CONFIG_MMC_AU1X */
375
376 /******************************************************************************/
377
378 static const struct software_node db1100_alchemy2_gpiochip = {
379 .name = "alchemy-gpio2",
380 };
381
382 static const struct property_entry db1100_ads7846_properties[] = {
383 PROPERTY_ENTRY_U16("ti,vref_min", 3300),
384 PROPERTY_ENTRY_GPIO("pendown-gpios",
385 &db1100_alchemy2_gpiochip, 21, GPIO_ACTIVE_LOW),
386 { }
387 };
388
389 static const struct software_node db1100_ads7846_swnode = {
390 .name = "ads7846",
391 .properties = db1100_ads7846_properties,
392 };
393
394 static struct spi_board_info db1100_spi_info[] __initdata = {
395 [0] = {
396 .modalias = "ads7846",
397 .max_speed_hz = 3250000,
398 .bus_num = 0,
399 .chip_select = 0,
400 .mode = 0,
401 .irq = AU1100_GPIO21_INT,
402 .swnode = &db1100_ads7846_swnode,
403 },
404 };
405
406 static const struct spi_gpio_platform_data db1100_spictl_pd __initconst = {
407 .num_chipselect = 1,
408 };
409
410 /*
411 * Alchemy GPIO 2 has its base at 200 so the GPIO lines
412 * 207 thru 210 are GPIOs at offset 7 thru 10 at this chip.
413 */
414 static const struct property_entry db1100_spi_dev_properties[] __initconst = {
415 PROPERTY_ENTRY_GPIO("miso-gpios",
416 &db1100_alchemy2_gpiochip, 7, GPIO_ACTIVE_HIGH),
417 PROPERTY_ENTRY_GPIO("mosi-gpios",
418 &db1100_alchemy2_gpiochip, 8, GPIO_ACTIVE_HIGH),
419 PROPERTY_ENTRY_GPIO("sck-gpios",
420 &db1100_alchemy2_gpiochip, 9, GPIO_ACTIVE_HIGH),
421 PROPERTY_ENTRY_GPIO("cs-gpios",
422 &db1100_alchemy2_gpiochip, 10, GPIO_ACTIVE_HIGH),
423 { }
424 };
425
426 static const struct platform_device_info db1100_spi_dev_info __initconst = {
427 .name = "spi_gpio",
428 .id = 0,
429 .data = &db1100_spictl_pd,
430 .size_data = sizeof(db1100_spictl_pd),
431 .dma_mask = DMA_BIT_MASK(32),
432 .properties = db1100_spi_dev_properties,
433 };
434
435 static struct platform_device *db1x00_devs[] = {
436 &db1x00_codec_dev,
437 &alchemy_ac97c_dma_dev,
438 &alchemy_ac97c_dev,
439 &db1x00_audio_dev,
440 };
441
442 static struct platform_device *db1100_devs[] = {
443 &au1100_lcd_device,
444 #ifdef CONFIG_MMC_AU1X
445 &db1100_mmc0_dev,
446 &db1100_mmc1_dev,
447 #endif
448 };
449
db1000_dev_setup(void)450 int __init db1000_dev_setup(void)
451 {
452 int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
453 int c0, c1, d0, d1, s0, s1, flashsize = 32, twosocks = 1;
454 int err;
455 unsigned long pfc;
456 struct clk *c, *p;
457 struct platform_device *spi_dev;
458
459 if (board == BCSR_WHOAMI_DB1500) {
460 c0 = AU1500_GPIO2_INT;
461 c1 = AU1500_GPIO5_INT;
462 d0 = 0; /* GPIO number, NOT irq! */
463 d1 = 3; /* GPIO number, NOT irq! */
464 s0 = AU1500_GPIO1_INT;
465 s1 = AU1500_GPIO4_INT;
466 } else if (board == BCSR_WHOAMI_DB1100) {
467 c0 = AU1100_GPIO2_INT;
468 c1 = AU1100_GPIO5_INT;
469 d0 = 0; /* GPIO number, NOT irq! */
470 d1 = 3; /* GPIO number, NOT irq! */
471 s0 = AU1100_GPIO1_INT;
472 s1 = AU1100_GPIO4_INT;
473
474 gpio_request(19, "sd0_cd");
475 gpio_request(20, "sd1_cd");
476 gpio_direction_input(19); /* sd0 cd# */
477 gpio_direction_input(20); /* sd1 cd# */
478
479 /* spi_gpio on SSI0 pins */
480 pfc = alchemy_rdsys(AU1000_SYS_PINFUNC);
481 pfc |= (1 << 0); /* SSI0 pins as GPIOs */
482 alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
483
484 software_node_register(&db1100_alchemy2_gpiochip);
485 spi_register_board_info(db1100_spi_info,
486 ARRAY_SIZE(db1100_spi_info));
487
488 /* link LCD clock to AUXPLL */
489 p = clk_get(NULL, "auxpll_clk");
490 c = clk_get(NULL, "lcd_intclk");
491 if (!IS_ERR(c) && !IS_ERR(p)) {
492 clk_set_parent(c, p);
493 clk_set_rate(c, clk_get_rate(p));
494 }
495 if (!IS_ERR(c))
496 clk_put(c);
497 if (!IS_ERR(p))
498 clk_put(p);
499
500 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
501
502 spi_dev = platform_device_register_full(&db1100_spi_dev_info);
503 err = PTR_ERR_OR_ZERO(spi_dev);
504 if (err)
505 pr_err("failed to register SPI controller: %d\n", err);
506 } else if (board == BCSR_WHOAMI_DB1000) {
507 c0 = AU1000_GPIO2_INT;
508 c1 = AU1000_GPIO5_INT;
509 d0 = 0; /* GPIO number, NOT irq! */
510 d1 = 3; /* GPIO number, NOT irq! */
511 s0 = AU1000_GPIO1_INT;
512 s1 = AU1000_GPIO4_INT;
513 } else if ((board == BCSR_WHOAMI_PB1500) ||
514 (board == BCSR_WHOAMI_PB1500R2)) {
515 c0 = AU1500_GPIO203_INT;
516 d0 = 1; /* GPIO number, NOT irq! */
517 s0 = AU1500_GPIO202_INT;
518 twosocks = 0;
519 flashsize = 64;
520 /* RTC and daughtercard irqs */
521 irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_LOW);
522 irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
523 /* EPSON S1D13806 0x1b000000
524 * SRAM 1MB/2MB 0x1a000000
525 * DS1693 RTC 0x0c000000
526 */
527 } else if (board == BCSR_WHOAMI_PB1100) {
528 c0 = AU1100_GPIO11_INT;
529 d0 = 9; /* GPIO number, NOT irq! */
530 s0 = AU1100_GPIO10_INT;
531 twosocks = 0;
532 flashsize = 64;
533 /* pendown, rtc, daughtercard irqs */
534 irq_set_irq_type(AU1100_GPIO8_INT, IRQ_TYPE_LEVEL_LOW);
535 irq_set_irq_type(AU1100_GPIO12_INT, IRQ_TYPE_LEVEL_LOW);
536 irq_set_irq_type(AU1100_GPIO13_INT, IRQ_TYPE_LEVEL_LOW);
537 /* EPSON S1D13806 0x1b000000
538 * SRAM 1MB/2MB 0x1a000000
539 * DiskOnChip 0x0d000000
540 * DS1693 RTC 0x0c000000
541 */
542 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
543 } else
544 return 0; /* unknown board, no further dev setup to do */
545
546 irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW);
547 irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW);
548
549 db1x_register_pcmcia_socket(
550 AU1000_PCMCIA_ATTR_PHYS_ADDR,
551 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
552 AU1000_PCMCIA_MEM_PHYS_ADDR,
553 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
554 AU1000_PCMCIA_IO_PHYS_ADDR,
555 AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1,
556 c0, d0, /*s0*/0, 0, 0);
557
558 if (twosocks) {
559 irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW);
560 irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW);
561
562 db1x_register_pcmcia_socket(
563 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004000000,
564 AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x004400000 - 1,
565 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004000000,
566 AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1,
567 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000,
568 AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1,
569 c1, d1, /*s1*/0, 0, 1);
570 }
571
572 platform_add_devices(db1x00_devs, ARRAY_SIZE(db1x00_devs));
573 db1x_register_norflash(flashsize << 20, 4 /* 32bit */, F_SWAPPED);
574 return 0;
575 }
576