Merge branch 'msm-core' of git://codeaurora.org/quic/kernel/dwalker/linux-msm
[pandora-kernel.git] / arch / arm / mach-davinci / board-da830-evm.c
1 /*
2  * TI DA830/OMAP L137 EVM board
3  *
4  * Author: Mark A. Greer <mgreer@mvista.com>
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
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26
27 #include <mach/cp_intc.h>
28 #include <mach/mux.h>
29 #include <mach/nand.h>
30 #include <mach/da8xx.h>
31 #include <mach/usb.h>
32
33 #define DA830_EVM_PHY_MASK              0x0
34 #define DA830_EVM_MDIO_FREQUENCY        2200000 /* PHY bus frequency */
35
36 /*
37  * USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
38  */
39 #define ON_BD_USB_DRV   GPIO_TO_PIN(1, 15)
40 #define ON_BD_USB_OVC   GPIO_TO_PIN(2, 4)
41
42 static const short da830_evm_usb11_pins[] = {
43         DA830_GPIO1_15, DA830_GPIO2_4,
44         -1
45 };
46
47 static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
48
49 static int da830_evm_usb_set_power(unsigned port, int on)
50 {
51         gpio_set_value(ON_BD_USB_DRV, on);
52         return 0;
53 }
54
55 static int da830_evm_usb_get_power(unsigned port)
56 {
57         return gpio_get_value(ON_BD_USB_DRV);
58 }
59
60 static int da830_evm_usb_get_oci(unsigned port)
61 {
62         return !gpio_get_value(ON_BD_USB_OVC);
63 }
64
65 static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
66
67 static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
68 {
69         int irq         = gpio_to_irq(ON_BD_USB_OVC);
70         int error       = 0;
71
72         if (handler != NULL) {
73                 da830_evm_usb_ocic_handler = handler;
74
75                 error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED |
76                                     IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
77                                     "OHCI over-current indicator", NULL);
78                 if (error)
79                         printk(KERN_ERR "%s: could not request IRQ to watch "
80                                "over-current indicator changes\n", __func__);
81         } else
82                 free_irq(irq, NULL);
83
84         return error;
85 }
86
87 static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
88         .set_power      = da830_evm_usb_set_power,
89         .get_power      = da830_evm_usb_get_power,
90         .get_oci        = da830_evm_usb_get_oci,
91         .ocic_notify    = da830_evm_usb_ocic_notify,
92
93         /* TPS2065 switch @ 5V */
94         .potpgt         = (3 + 1) / 2,  /* 3 ms max */
95 };
96
97 static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
98 {
99         da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
100         return IRQ_HANDLED;
101 }
102
103 static __init void da830_evm_usb_init(void)
104 {
105         u32 cfgchip2;
106         int ret;
107
108         /*
109          * Set up USB clock/mode in the CFGCHIP2 register.
110          * FYI:  CFGCHIP2 is 0x0000ef00 initially.
111          */
112         cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
113
114         /* USB2.0 PHY reference clock is 24 MHz */
115         cfgchip2 &= ~CFGCHIP2_REFFREQ;
116         cfgchip2 |=  CFGCHIP2_REFFREQ_24MHZ;
117
118         /*
119          * Select internal reference clock for USB 2.0 PHY
120          * and use it as a clock source for USB 1.1 PHY
121          * (this is the default setting anyway).
122          */
123         cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
124         cfgchip2 |=  CFGCHIP2_USB2PHYCLKMUX;
125
126         /*
127          * We have to override VBUS/ID signals when MUSB is configured into the
128          * host-only mode -- ID pin will float if no cable is connected, so the
129          * controller won't be able to drive VBUS thinking that it's a B-device.
130          * Otherwise, we want to use the OTG mode and enable VBUS comparators.
131          */
132         cfgchip2 &= ~CFGCHIP2_OTGMODE;
133 #ifdef  CONFIG_USB_MUSB_HOST
134         cfgchip2 |=  CFGCHIP2_FORCE_HOST;
135 #else
136         cfgchip2 |=  CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
137 #endif
138
139         __raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
140
141         /* USB_REFCLKIN is not used. */
142         ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
143         if (ret)
144                 pr_warning("%s: USB 2.0 PinMux setup failed: %d\n",
145                            __func__, ret);
146         else {
147                 /*
148                  * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
149                  * with the power on to power good time of 3 ms.
150                  */
151                 ret = da8xx_register_usb20(1000, 3);
152                 if (ret)
153                         pr_warning("%s: USB 2.0 registration failed: %d\n",
154                                    __func__, ret);
155         }
156
157         ret = davinci_cfg_reg_list(da830_evm_usb11_pins);
158         if (ret) {
159                 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
160                            __func__, ret);
161                 return;
162         }
163
164         ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
165         if (ret) {
166                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
167                        "power control: %d\n", __func__, ret);
168                 return;
169         }
170         gpio_direction_output(ON_BD_USB_DRV, 0);
171
172         ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
173         if (ret) {
174                 printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
175                        "over-current indicator: %d\n", __func__, ret);
176                 return;
177         }
178         gpio_direction_input(ON_BD_USB_OVC);
179
180         ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
181         if (ret)
182                 pr_warning("%s: USB 1.1 registration failed: %d\n",
183                            __func__, ret);
184 }
185
186 static struct davinci_uart_config da830_evm_uart_config __initdata = {
187         .enabled_uarts = 0x7,
188 };
189
190 static const short da830_evm_mcasp1_pins[] = {
191         DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1,
192         DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5,
193         DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10,
194         DA830_AXR1_11,
195         -1
196 };
197
198 static u8 da830_iis_serializer_direction[] = {
199         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
200         INACTIVE_MODE,  TX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,
201         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
202 };
203
204 static struct snd_platform_data da830_evm_snd_data = {
205         .tx_dma_offset  = 0x2000,
206         .rx_dma_offset  = 0x2000,
207         .op_mode        = DAVINCI_MCASP_IIS_MODE,
208         .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
209         .tdm_slots      = 2,
210         .serial_dir     = da830_iis_serializer_direction,
211         .eventq_no      = EVENTQ_0,
212         .version        = MCASP_VERSION_2,
213         .txnumevt       = 1,
214         .rxnumevt       = 1,
215 };
216
217 /*
218  * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
219  */
220 static const short da830_evm_mmc_sd_pins[] = {
221         DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2,
222         DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5,
223         DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK,
224         DA830_MMCSD_CMD,   DA830_GPIO2_1,     DA830_GPIO2_2,
225         -1
226 };
227
228 #define DA830_MMCSD_WP_PIN              GPIO_TO_PIN(2, 1)
229 #define DA830_MMCSD_CD_PIN              GPIO_TO_PIN(2, 2)
230
231 static int da830_evm_mmc_get_ro(int index)
232 {
233         return gpio_get_value(DA830_MMCSD_WP_PIN);
234 }
235
236 static int da830_evm_mmc_get_cd(int index)
237 {
238         return !gpio_get_value(DA830_MMCSD_CD_PIN);
239 }
240
241 static struct davinci_mmc_config da830_evm_mmc_config = {
242         .get_ro                 = da830_evm_mmc_get_ro,
243         .get_cd                 = da830_evm_mmc_get_cd,
244         .wires                  = 8,
245         .max_freq               = 50000000,
246         .caps                   = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
247         .version                = MMC_CTLR_VERSION_2,
248 };
249
250 static inline void da830_evm_init_mmc(void)
251 {
252         int ret;
253
254         ret = davinci_cfg_reg_list(da830_evm_mmc_sd_pins);
255         if (ret) {
256                 pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
257                                 ret);
258                 return;
259         }
260
261         ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
262         if (ret) {
263                 pr_warning("da830_evm_init: can not open GPIO %d\n",
264                            DA830_MMCSD_WP_PIN);
265                 return;
266         }
267         gpio_direction_input(DA830_MMCSD_WP_PIN);
268
269         ret = gpio_request(DA830_MMCSD_CD_PIN, "MMC CD\n");
270         if (ret) {
271                 pr_warning("da830_evm_init: can not open GPIO %d\n",
272                            DA830_MMCSD_CD_PIN);
273                 return;
274         }
275         gpio_direction_input(DA830_MMCSD_CD_PIN);
276
277         ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
278         if (ret) {
279                 pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
280                                 ret);
281                 gpio_free(DA830_MMCSD_WP_PIN);
282         }
283 }
284
285 /*
286  * UI board NAND/NOR flashes only use 8-bit data bus.
287  */
288 static const short da830_evm_emif25_pins[] = {
289         DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3,
290         DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7,
291         DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3,
292         DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7,
293         DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11,
294         DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE,
295         DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0,
296         -1
297 };
298
299 #if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
300 #define HAS_MMC 1
301 #else
302 #define HAS_MMC 0
303 #endif
304
305 #ifdef CONFIG_DA830_UI_NAND
306 static struct mtd_partition da830_evm_nand_partitions[] = {
307         /* bootloader (U-Boot, etc) in first sector */
308         [0] = {
309                 .name           = "bootloader",
310                 .offset         = 0,
311                 .size           = SZ_128K,
312                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
313         },
314         /* bootloader params in the next sector */
315         [1] = {
316                 .name           = "params",
317                 .offset         = MTDPART_OFS_APPEND,
318                 .size           = SZ_128K,
319                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
320         },
321         /* kernel */
322         [2] = {
323                 .name           = "kernel",
324                 .offset         = MTDPART_OFS_APPEND,
325                 .size           = SZ_2M,
326                 .mask_flags     = 0,
327         },
328         /* file system */
329         [3] = {
330                 .name           = "filesystem",
331                 .offset         = MTDPART_OFS_APPEND,
332                 .size           = MTDPART_SIZ_FULL,
333                 .mask_flags     = 0,
334         }
335 };
336
337 /* flash bbt decriptors */
338 static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
339 static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };
340
341 static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
342         .options        = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
343                           NAND_BBT_WRITE | NAND_BBT_2BIT |
344                           NAND_BBT_VERSION | NAND_BBT_PERCHIP,
345         .offs           = 2,
346         .len            = 4,
347         .veroffs        = 16,
348         .maxblocks      = 4,
349         .pattern        = da830_evm_nand_bbt_pattern
350 };
351
352 static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
353         .options        = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
354                           NAND_BBT_WRITE | NAND_BBT_2BIT |
355                           NAND_BBT_VERSION | NAND_BBT_PERCHIP,
356         .offs           = 2,
357         .len            = 4,
358         .veroffs        = 16,
359         .maxblocks      = 4,
360         .pattern        = da830_evm_nand_mirror_pattern
361 };
362
363 static struct davinci_nand_pdata da830_evm_nand_pdata = {
364         .parts          = da830_evm_nand_partitions,
365         .nr_parts       = ARRAY_SIZE(da830_evm_nand_partitions),
366         .ecc_mode       = NAND_ECC_HW,
367         .ecc_bits       = 4,
368         .options        = NAND_USE_FLASH_BBT,
369         .bbt_td         = &da830_evm_nand_bbt_main_descr,
370         .bbt_md         = &da830_evm_nand_bbt_mirror_descr,
371 };
372
373 static struct resource da830_evm_nand_resources[] = {
374         [0] = {         /* First memory resource is NAND I/O window */
375                 .start  = DA8XX_AEMIF_CS3_BASE,
376                 .end    = DA8XX_AEMIF_CS3_BASE + PAGE_SIZE - 1,
377                 .flags  = IORESOURCE_MEM,
378         },
379         [1] = {         /* Second memory resource is AEMIF control registers */
380                 .start  = DA8XX_AEMIF_CTL_BASE,
381                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
382                 .flags  = IORESOURCE_MEM,
383         },
384 };
385
386 static struct platform_device da830_evm_nand_device = {
387         .name           = "davinci_nand",
388         .id             = 1,
389         .dev            = {
390                 .platform_data  = &da830_evm_nand_pdata,
391         },
392         .num_resources  = ARRAY_SIZE(da830_evm_nand_resources),
393         .resource       = da830_evm_nand_resources,
394 };
395
396 static inline void da830_evm_init_nand(int mux_mode)
397 {
398         int ret;
399
400         if (HAS_MMC) {
401                 pr_warning("WARNING: both MMC/SD and NAND are "
402                                 "enabled, but they share AEMIF pins.\n"
403                                 "\tDisable MMC/SD for NAND support.\n");
404                 return;
405         }
406
407         ret = davinci_cfg_reg_list(da830_evm_emif25_pins);
408         if (ret)
409                 pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
410                                 ret);
411
412         ret = platform_device_register(&da830_evm_nand_device);
413         if (ret)
414                 pr_warning("da830_evm_init: NAND device not registered.\n");
415
416         gpio_direction_output(mux_mode, 1);
417 }
418 #else
419 static inline void da830_evm_init_nand(int mux_mode) { }
420 #endif
421
422 #ifdef CONFIG_DA830_UI_LCD
423 static inline void da830_evm_init_lcdc(int mux_mode)
424 {
425         int ret;
426
427         ret = davinci_cfg_reg_list(da830_lcdcntl_pins);
428         if (ret)
429                 pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
430                                 ret);
431
432         ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
433         if (ret)
434                 pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
435
436         gpio_direction_output(mux_mode, 0);
437 }
438 #else
439 static inline void da830_evm_init_lcdc(int mux_mode) { }
440 #endif
441
442 static struct at24_platform_data da830_evm_i2c_eeprom_info = {
443         .byte_len       = SZ_256K / 8,
444         .page_size      = 64,
445         .flags          = AT24_FLAG_ADDR16,
446         .setup          = davinci_get_mac_addr,
447         .context        = (void *)0x7f00,
448 };
449
450 static int __init da830_evm_ui_expander_setup(struct i2c_client *client,
451                 int gpio, unsigned ngpio, void *context)
452 {
453         gpio_request(gpio + 6, "UI MUX_MODE");
454
455         /* Drive mux mode low to match the default without UI card */
456         gpio_direction_output(gpio + 6, 0);
457
458         da830_evm_init_lcdc(gpio + 6);
459
460         da830_evm_init_nand(gpio + 6);
461
462         return 0;
463 }
464
465 static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio,
466                 unsigned ngpio, void *context)
467 {
468         gpio_free(gpio + 6);
469         return 0;
470 }
471
472 static struct pcf857x_platform_data __initdata da830_evm_ui_expander_info = {
473         .gpio_base      = DAVINCI_N_GPIO,
474         .setup          = da830_evm_ui_expander_setup,
475         .teardown       = da830_evm_ui_expander_teardown,
476 };
477
478 static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
479         {
480                 I2C_BOARD_INFO("24c256", 0x50),
481                 .platform_data  = &da830_evm_i2c_eeprom_info,
482         },
483         {
484                 I2C_BOARD_INFO("tlv320aic3x", 0x18),
485         },
486         {
487                 I2C_BOARD_INFO("pcf8574", 0x3f),
488                 .platform_data  = &da830_evm_ui_expander_info,
489         },
490 };
491
492 static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
493         .bus_freq       = 100,  /* kHz */
494         .bus_delay      = 0,    /* usec */
495 };
496
497 static __init void da830_evm_init(void)
498 {
499         struct davinci_soc_info *soc_info = &davinci_soc_info;
500         int ret;
501
502         ret = da8xx_register_edma();
503         if (ret)
504                 pr_warning("da830_evm_init: edma registration failed: %d\n",
505                                 ret);
506
507         ret = davinci_cfg_reg_list(da830_i2c0_pins);
508         if (ret)
509                 pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
510                                 ret);
511
512         ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
513         if (ret)
514                 pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
515                                 ret);
516
517         da830_evm_usb_init();
518
519         soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK;
520         soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY;
521         soc_info->emac_pdata->rmii_en = 1;
522
523         ret = davinci_cfg_reg_list(da830_cpgmac_pins);
524         if (ret)
525                 pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
526                                 ret);
527
528         ret = da8xx_register_emac();
529         if (ret)
530                 pr_warning("da830_evm_init: emac registration failed: %d\n",
531                                 ret);
532
533         ret = da8xx_register_watchdog();
534         if (ret)
535                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
536                                 ret);
537
538         davinci_serial_init(&da830_evm_uart_config);
539         i2c_register_board_info(1, da830_evm_i2c_devices,
540                         ARRAY_SIZE(da830_evm_i2c_devices));
541
542         ret = davinci_cfg_reg_list(da830_evm_mcasp1_pins);
543         if (ret)
544                 pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
545                                 ret);
546
547         da8xx_register_mcasp(1, &da830_evm_snd_data);
548
549         da830_evm_init_mmc();
550
551         ret = da8xx_register_rtc();
552         if (ret)
553                 pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
554 }
555
556 #ifdef CONFIG_SERIAL_8250_CONSOLE
557 static int __init da830_evm_console_init(void)
558 {
559         return add_preferred_console("ttyS", 2, "115200");
560 }
561 console_initcall(da830_evm_console_init);
562 #endif
563
564 static void __init da830_evm_map_io(void)
565 {
566         da830_init();
567 }
568
569 MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137 EVM")
570         .phys_io        = IO_PHYS,
571         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
572         .boot_params    = (DA8XX_DDR_BASE + 0x100),
573         .map_io         = da830_evm_map_io,
574         .init_irq       = cp_intc_init,
575         .timer          = &davinci_timer,
576         .init_machine   = da830_evm_init,
577 MACHINE_END