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board-da830-evm.c
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1 /*
2  * TI DA830/OMAP L137 EVM board
3  *
4  * Author: Mark A. Greer <[email protected]>
5  * Derived from: arch/arm/mach-davinci/board-dm644x-evm.c
6  *
7  * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
8  * the terms of the GNU General Public License version 2. This program
9  * is licensed "as is" without any warranty of any kind, whether express
10  * or implied.
11  */
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/console.h>
15 #include <linux/interrupt.h>
16 #include <linux/gpio.h>
17 #include <linux/platform_device.h>
18 #include <linux/i2c.h>
19 #include <linux/i2c/pcf857x.h>
20 #include <linux/i2c/at24.h>
21 #include <linux/mtd/mtd.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/spi/spi.h>
24 #include <linux/spi/flash.h>
25 
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 
29 #include <mach/cp_intc.h>
30 #include <mach/mux.h>
32 #include <mach/da8xx.h>
36 
37 #define DA830_EVM_PHY_ID ""
38 /*
39  * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
40  */
41 #define ON_BD_USB_DRV GPIO_TO_PIN(1, 15)
42 #define ON_BD_USB_OVC GPIO_TO_PIN(2, 4)
43 
44 static const short da830_evm_usb11_pins[] = {
46  -1
47 };
48 
49 static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
50 
51 static int da830_evm_usb_set_power(unsigned port, int on)
52 {
54  return 0;
55 }
56 
57 static int da830_evm_usb_get_power(unsigned port)
58 {
60 }
61 
62 static int da830_evm_usb_get_oci(unsigned port)
63 {
65 }
66 
67 static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
68 
69 static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
70 {
72  int error = 0;
73 
74  if (handler != NULL) {
75  da830_evm_usb_ocic_handler = handler;
76 
77  error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED |
79  "OHCI over-current indicator", NULL);
80  if (error)
81  printk(KERN_ERR "%s: could not request IRQ to watch "
82  "over-current indicator changes\n", __func__);
83  } else
84  free_irq(irq, NULL);
85 
86  return error;
87 }
88 
89 static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
90  .set_power = da830_evm_usb_set_power,
91  .get_power = da830_evm_usb_get_power,
92  .get_oci = da830_evm_usb_get_oci,
93  .ocic_notify = da830_evm_usb_ocic_notify,
94 
95  /* TPS2065 switch @ 5V */
96  .potpgt = (3 + 1) / 2, /* 3 ms max */
97 };
98 
99 static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
100 {
101  da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
102  return IRQ_HANDLED;
103 }
104 
105 static __init void da830_evm_usb_init(void)
106 {
107  u32 cfgchip2;
108  int ret;
109 
110  /*
111  * Set up USB clock/mode in the CFGCHIP2 register.
112  * FYI: CFGCHIP2 is 0x0000ef00 initially.
113  */
115 
116  /* USB2.0 PHY reference clock is 24 MHz */
117  cfgchip2 &= ~CFGCHIP2_REFFREQ;
118  cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ;
119 
120  /*
121  * Select internal reference clock for USB 2.0 PHY
122  * and use it as a clock source for USB 1.1 PHY
123  * (this is the default setting anyway).
124  */
125  cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
126  cfgchip2 |= CFGCHIP2_USB2PHYCLKMUX;
127 
128  /*
129  * We have to override VBUS/ID signals when MUSB is configured into the
130  * host-only mode -- ID pin will float if no cable is connected, so the
131  * controller won't be able to drive VBUS thinking that it's a B-device.
132  * Otherwise, we want to use the OTG mode and enable VBUS comparators.
133  */
134  cfgchip2 &= ~CFGCHIP2_OTGMODE;
135 #ifdef CONFIG_USB_MUSB_HOST
136  cfgchip2 |= CFGCHIP2_FORCE_HOST;
137 #else
138  cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
139 #endif
140 
142 
143  /* USB_REFCLKIN is not used. */
145  if (ret)
146  pr_warning("%s: USB 2.0 PinMux setup failed: %d\n",
147  __func__, ret);
148  else {
149  /*
150  * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
151  * with the power on to power good time of 3 ms.
152  */
153  ret = da8xx_register_usb20(1000, 3);
154  if (ret)
155  pr_warning("%s: USB 2.0 registration failed: %d\n",
156  __func__, ret);
157  }
158 
159  ret = davinci_cfg_reg_list(da830_evm_usb11_pins);
160  if (ret) {
161  pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
162  __func__, ret);
163  return;
164  }
165 
166  ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
167  if (ret) {
168  printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
169  "power control: %d\n", __func__, ret);
170  return;
171  }
173 
174  ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
175  if (ret) {
176  printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
177  "over-current indicator: %d\n", __func__, ret);
178  return;
179  }
181 
182  ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
183  if (ret)
184  pr_warning("%s: USB 1.1 registration failed: %d\n",
185  __func__, ret);
186 }
187 
188 static struct davinci_uart_config da830_evm_uart_config __initdata = {
189  .enabled_uarts = 0x7,
190 };
191 
192 static const short da830_evm_mcasp1_pins[] = {
197  -1
198 };
199 
200 static u8 da830_iis_serializer_direction[] = {
204 };
205 
206 static struct snd_platform_data da830_evm_snd_data = {
207  .tx_dma_offset = 0x2000,
208  .rx_dma_offset = 0x2000,
209  .op_mode = DAVINCI_MCASP_IIS_MODE,
210  .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
211  .tdm_slots = 2,
212  .serial_dir = da830_iis_serializer_direction,
213  .asp_chan_q = EVENTQ_0,
214  .version = MCASP_VERSION_2,
215  .txnumevt = 1,
216  .rxnumevt = 1,
217 };
218 
219 /*
220  * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
221  */
222 static const short da830_evm_mmc_sd_pins[] = {
227  -1
228 };
229 
230 #define DA830_MMCSD_WP_PIN GPIO_TO_PIN(2, 1)
231 #define DA830_MMCSD_CD_PIN GPIO_TO_PIN(2, 2)
232 
233 static int da830_evm_mmc_get_ro(int index)
234 {
236 }
237 
238 static int da830_evm_mmc_get_cd(int index)
239 {
241 }
242 
243 static struct davinci_mmc_config da830_evm_mmc_config = {
244  .get_ro = da830_evm_mmc_get_ro,
245  .get_cd = da830_evm_mmc_get_cd,
246  .wires = 8,
247  .max_freq = 50000000,
249  .version = MMC_CTLR_VERSION_2,
250 };
251 
252 static inline void da830_evm_init_mmc(void)
253 {
254  int ret;
255 
256  ret = davinci_cfg_reg_list(da830_evm_mmc_sd_pins);
257  if (ret) {
258  pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
259  ret);
260  return;
261  }
262 
263  ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
264  if (ret) {
265  pr_warning("da830_evm_init: can not open GPIO %d\n",
267  return;
268  }
270 
271  ret = gpio_request(DA830_MMCSD_CD_PIN, "MMC CD\n");
272  if (ret) {
273  pr_warning("da830_evm_init: can not open GPIO %d\n",
275  return;
276  }
278 
279  ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
280  if (ret) {
281  pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
282  ret);
284  }
285 }
286 
287 /*
288  * UI board NAND/NOR flashes only use 8-bit data bus.
289  */
290 static const short da830_evm_emif25_pins[] = {
298  -1
299 };
300 
301 #if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
302 #define HAS_MMC 1
303 #else
304 #define HAS_MMC 0
305 #endif
306 
307 #ifdef CONFIG_DA830_UI_NAND
308 static struct mtd_partition da830_evm_nand_partitions[] = {
309  /* bootloader (U-Boot, etc) in first sector */
310  [0] = {
311  .name = "bootloader",
312  .offset = 0,
313  .size = SZ_128K,
314  .mask_flags = MTD_WRITEABLE, /* force read-only */
315  },
316  /* bootloader params in the next sector */
317  [1] = {
318  .name = "params",
319  .offset = MTDPART_OFS_APPEND,
320  .size = SZ_128K,
321  .mask_flags = MTD_WRITEABLE, /* force read-only */
322  },
323  /* kernel */
324  [2] = {
325  .name = "kernel",
326  .offset = MTDPART_OFS_APPEND,
327  .size = SZ_2M,
328  .mask_flags = 0,
329  },
330  /* file system */
331  [3] = {
332  .name = "filesystem",
333  .offset = MTDPART_OFS_APPEND,
334  .size = MTDPART_SIZ_FULL,
335  .mask_flags = 0,
336  }
337 };
338 
339 /* flash bbt decriptors */
340 static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
341 static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };
342 
343 static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
347  .offs = 2,
348  .len = 4,
349  .veroffs = 16,
350  .maxblocks = 4,
351  .pattern = da830_evm_nand_bbt_pattern
352 };
353 
354 static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
358  .offs = 2,
359  .len = 4,
360  .veroffs = 16,
361  .maxblocks = 4,
362  .pattern = da830_evm_nand_mirror_pattern
363 };
364 
365 static struct davinci_aemif_timing da830_evm_nandflash_timing = {
366  .wsetup = 24,
367  .wstrobe = 21,
368  .whold = 14,
369  .rsetup = 19,
370  .rstrobe = 50,
371  .rhold = 0,
372  .ta = 20,
373 };
374 
375 static struct davinci_nand_pdata da830_evm_nand_pdata = {
376  .parts = da830_evm_nand_partitions,
377  .nr_parts = ARRAY_SIZE(da830_evm_nand_partitions),
378  .ecc_mode = NAND_ECC_HW,
379  .ecc_bits = 4,
380  .bbt_options = NAND_BBT_USE_FLASH,
381  .bbt_td = &da830_evm_nand_bbt_main_descr,
382  .bbt_md = &da830_evm_nand_bbt_mirror_descr,
383  .timing = &da830_evm_nandflash_timing,
384 };
385 
386 static struct resource da830_evm_nand_resources[] = {
387  [0] = { /* First memory resource is NAND I/O window */
389  .end = DA8XX_AEMIF_CS3_BASE + PAGE_SIZE - 1,
390  .flags = IORESOURCE_MEM,
391  },
392  [1] = { /* Second memory resource is AEMIF control registers */
393  .start = DA8XX_AEMIF_CTL_BASE,
394  .end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
395  .flags = IORESOURCE_MEM,
396  },
397 };
398 
399 static struct platform_device da830_evm_nand_device = {
400  .name = "davinci_nand",
401  .id = 1,
402  .dev = {
403  .platform_data = &da830_evm_nand_pdata,
404  },
405  .num_resources = ARRAY_SIZE(da830_evm_nand_resources),
406  .resource = da830_evm_nand_resources,
407 };
408 
409 static inline void da830_evm_init_nand(int mux_mode)
410 {
411  int ret;
412 
413  if (HAS_MMC) {
414  pr_warning("WARNING: both MMC/SD and NAND are "
415  "enabled, but they share AEMIF pins.\n"
416  "\tDisable MMC/SD for NAND support.\n");
417  return;
418  }
419 
420  ret = davinci_cfg_reg_list(da830_evm_emif25_pins);
421  if (ret)
422  pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
423  ret);
424 
425  ret = platform_device_register(&da830_evm_nand_device);
426  if (ret)
427  pr_warning("da830_evm_init: NAND device not registered.\n");
428 
429  gpio_direction_output(mux_mode, 1);
430 }
431 #else
432 static inline void da830_evm_init_nand(int mux_mode) { }
433 #endif
434 
435 #ifdef CONFIG_DA830_UI_LCD
436 static inline void da830_evm_init_lcdc(int mux_mode)
437 {
438  int ret;
439 
441  if (ret)
442  pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
443  ret);
444 
446  if (ret)
447  pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
448 
449  gpio_direction_output(mux_mode, 0);
450 }
451 #else
452 static inline void da830_evm_init_lcdc(int mux_mode) { }
453 #endif
454 
455 static struct at24_platform_data da830_evm_i2c_eeprom_info = {
456  .byte_len = SZ_256K / 8,
457  .page_size = 64,
458  .flags = AT24_FLAG_ADDR16,
459  .setup = davinci_get_mac_addr,
460  .context = (void *)0x7f00,
461 };
462 
463 static int __init da830_evm_ui_expander_setup(struct i2c_client *client,
464  int gpio, unsigned ngpio, void *context)
465 {
466  gpio_request(gpio + 6, "UI MUX_MODE");
467 
468  /* Drive mux mode low to match the default without UI card */
469  gpio_direction_output(gpio + 6, 0);
470 
471  da830_evm_init_lcdc(gpio + 6);
472 
473  da830_evm_init_nand(gpio + 6);
474 
475  return 0;
476 }
477 
478 static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio,
479  unsigned ngpio, void *context)
480 {
481  gpio_free(gpio + 6);
482  return 0;
483 }
484 
485 static struct pcf857x_platform_data __initdata da830_evm_ui_expander_info = {
486  .gpio_base = DAVINCI_N_GPIO,
487  .setup = da830_evm_ui_expander_setup,
488  .teardown = da830_evm_ui_expander_teardown,
489 };
490 
491 static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
492  {
493  I2C_BOARD_INFO("24c256", 0x50),
494  .platform_data = &da830_evm_i2c_eeprom_info,
495  },
496  {
497  I2C_BOARD_INFO("tlv320aic3x", 0x18),
498  },
499  {
500  I2C_BOARD_INFO("pcf8574", 0x3f),
501  .platform_data = &da830_evm_ui_expander_info,
502  },
503 };
504 
505 static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
506  .bus_freq = 100, /* kHz */
507  .bus_delay = 0, /* usec */
508 };
509 
510 /*
511  * The following EDMA channels/slots are not being used by drivers (for
512  * example: Timer, GPIO, UART events etc) on da830/omap-l137 EVM, hence
513  * they are being reserved for codecs on the DSP side.
514  */
515 static const s16 da830_dma_rsv_chans[][2] = {
516  /* (offset, number) */
517  { 8, 2},
518  {12, 2},
519  {24, 4},
520  {30, 2},
521  {-1, -1}
522 };
523 
524 static const s16 da830_dma_rsv_slots[][2] = {
525  /* (offset, number) */
526  { 8, 2},
527  {12, 2},
528  {24, 4},
529  {30, 26},
530  {-1, -1}
531 };
532 
533 static struct edma_rsv_info da830_edma_rsv[] = {
534  {
535  .rsv_chans = da830_dma_rsv_chans,
536  .rsv_slots = da830_dma_rsv_slots,
537  },
538 };
539 
540 static struct mtd_partition da830evm_spiflash_part[] = {
541  [0] = {
542  .name = "DSP-UBL",
543  .offset = 0,
544  .size = SZ_8K,
545  .mask_flags = MTD_WRITEABLE,
546  },
547  [1] = {
548  .name = "ARM-UBL",
549  .offset = MTDPART_OFS_APPEND,
550  .size = SZ_16K + SZ_8K,
551  .mask_flags = MTD_WRITEABLE,
552  },
553  [2] = {
554  .name = "U-Boot",
555  .offset = MTDPART_OFS_APPEND,
556  .size = SZ_256K - SZ_32K,
557  .mask_flags = MTD_WRITEABLE,
558  },
559  [3] = {
560  .name = "U-Boot-Environment",
561  .offset = MTDPART_OFS_APPEND,
562  .size = SZ_16K,
563  .mask_flags = 0,
564  },
565  [4] = {
566  .name = "Kernel",
567  .offset = MTDPART_OFS_APPEND,
568  .size = MTDPART_SIZ_FULL,
569  .mask_flags = 0,
570  },
571 };
572 
573 static struct flash_platform_data da830evm_spiflash_data = {
574  .name = "m25p80",
575  .parts = da830evm_spiflash_part,
576  .nr_parts = ARRAY_SIZE(da830evm_spiflash_part),
577  .type = "w25x32",
578 };
579 
580 static struct davinci_spi_config da830evm_spiflash_cfg = {
581  .io_type = SPI_IO_TYPE_DMA,
582  .c2tdelay = 8,
583  .t2cdelay = 8,
584 };
585 
586 static struct spi_board_info da830evm_spi_info[] = {
587  {
588  .modalias = "m25p80",
589  .platform_data = &da830evm_spiflash_data,
590  .controller_data = &da830evm_spiflash_cfg,
591  .mode = SPI_MODE_0,
592  .max_speed_hz = 30000000,
593  .bus_num = 0,
594  .chip_select = 0,
595  },
596 };
597 
598 static __init void da830_evm_init(void)
599 {
600  struct davinci_soc_info *soc_info = &davinci_soc_info;
601  int ret;
602 
603  ret = da830_register_edma(da830_edma_rsv);
604  if (ret)
605  pr_warning("da830_evm_init: edma registration failed: %d\n",
606  ret);
607 
609  if (ret)
610  pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
611  ret);
612 
613  ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
614  if (ret)
615  pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
616  ret);
617 
618  da830_evm_usb_init();
619 
620  soc_info->emac_pdata->rmii_en = 1;
621  soc_info->emac_pdata->phy_id = DA830_EVM_PHY_ID;
622 
624  if (ret)
625  pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
626  ret);
627 
628  ret = da8xx_register_emac();
629  if (ret)
630  pr_warning("da830_evm_init: emac registration failed: %d\n",
631  ret);
632 
633  ret = da8xx_register_watchdog();
634  if (ret)
635  pr_warning("da830_evm_init: watchdog registration failed: %d\n",
636  ret);
637 
638  davinci_serial_init(&da830_evm_uart_config);
639  i2c_register_board_info(1, da830_evm_i2c_devices,
640  ARRAY_SIZE(da830_evm_i2c_devices));
641 
642  ret = davinci_cfg_reg_list(da830_evm_mcasp1_pins);
643  if (ret)
644  pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
645  ret);
646 
647  da8xx_register_mcasp(1, &da830_evm_snd_data);
648 
649  da830_evm_init_mmc();
650 
651  ret = da8xx_register_rtc();
652  if (ret)
653  pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
654 
655  ret = da8xx_register_spi(0, da830evm_spi_info,
656  ARRAY_SIZE(da830evm_spi_info));
657  if (ret)
658  pr_warning("da830_evm_init: spi 0 registration failed: %d\n",
659  ret);
660 }
661 
662 #ifdef CONFIG_SERIAL_8250_CONSOLE
663 static int __init da830_evm_console_init(void)
664 {
665  if (!machine_is_davinci_da830_evm())
666  return 0;
667 
668  return add_preferred_console("ttyS", 2, "115200");
669 }
670 console_initcall(da830_evm_console_init);
671 #endif
672 
673 static void __init da830_evm_map_io(void)
674 {
675  da830_init();
676 }
677 
678 MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137/AM17x EVM")
679  .atag_offset = 0x100,
680  .map_io = da830_evm_map_io,
681  .init_irq = cp_intc_init,
682  .timer = &davinci_timer,
683  .init_machine = da830_evm_init,
684  .init_late = davinci_init_late,
685  .dma_zone_size = SZ_128M,
686  .restart = da8xx_restart,