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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-imx/mach-mx27_3ds.c

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  1 /*
  2  * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
  3  *
  4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
  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 
 17 /*
 18  * This machine is known as:
 19  *  - i.MX27 3-Stack Development System
 20  *  - i.MX27 Platform Development Kit (i.MX27 PDK)
 21  */
 22 
 23 #include <linux/platform_device.h>
 24 #include <linux/gpio.h>
 25 #include <linux/irq.h>
 26 #include <linux/usb/otg.h>
 27 #include <linux/usb/ulpi.h>
 28 #include <linux/delay.h>
 29 #include <linux/mfd/mc13783.h>
 30 #include <linux/spi/spi.h>
 31 #include <linux/regulator/machine.h>
 32 #include <linux/spi/l4f00242t03.h>
 33 
 34 #include <media/soc_camera.h>
 35 
 36 #include <asm/mach-types.h>
 37 #include <asm/mach/arch.h>
 38 #include <asm/mach/time.h>
 39 
 40 #include "3ds_debugboard.h"
 41 #include "common.h"
 42 #include "devices-imx27.h"
 43 #include "ehci.h"
 44 #include "hardware.h"
 45 #include "iomux-mx27.h"
 46 #include "ulpi.h"
 47 
 48 #define SD1_EN_GPIO             IMX_GPIO_NR(2, 25)
 49 #define OTG_PHY_RESET_GPIO      IMX_GPIO_NR(2, 23)
 50 #define SPI2_SS0                IMX_GPIO_NR(4, 21)
 51 #define PMIC_INT                IMX_GPIO_NR(3, 14)
 52 #define SPI1_SS0                IMX_GPIO_NR(4, 28)
 53 #define SD1_CD                  IMX_GPIO_NR(2, 26)
 54 #define LCD_RESET               IMX_GPIO_NR(1, 3)
 55 #define LCD_ENABLE              IMX_GPIO_NR(1, 31)
 56 #define CSI_PWRDWN              IMX_GPIO_NR(4, 19)
 57 #define CSI_RESET               IMX_GPIO_NR(3, 6)
 58 
 59 static const int mx27pdk_pins[] __initconst = {
 60         /* UART1 */
 61         PE12_PF_UART1_TXD,
 62         PE13_PF_UART1_RXD,
 63         PE14_PF_UART1_CTS,
 64         PE15_PF_UART1_RTS,
 65         /* FEC */
 66         PD0_AIN_FEC_TXD0,
 67         PD1_AIN_FEC_TXD1,
 68         PD2_AIN_FEC_TXD2,
 69         PD3_AIN_FEC_TXD3,
 70         PD4_AOUT_FEC_RX_ER,
 71         PD5_AOUT_FEC_RXD1,
 72         PD6_AOUT_FEC_RXD2,
 73         PD7_AOUT_FEC_RXD3,
 74         PD8_AF_FEC_MDIO,
 75         PD9_AIN_FEC_MDC,
 76         PD10_AOUT_FEC_CRS,
 77         PD11_AOUT_FEC_TX_CLK,
 78         PD12_AOUT_FEC_RXD0,
 79         PD13_AOUT_FEC_RX_DV,
 80         PD14_AOUT_FEC_RX_CLK,
 81         PD15_AOUT_FEC_COL,
 82         PD16_AIN_FEC_TX_ER,
 83         PF23_AIN_FEC_TX_EN,
 84         /* SDHC1 */
 85         PE18_PF_SD1_D0,
 86         PE19_PF_SD1_D1,
 87         PE20_PF_SD1_D2,
 88         PE21_PF_SD1_D3,
 89         PE22_PF_SD1_CMD,
 90         PE23_PF_SD1_CLK,
 91         SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
 92         /* OTG */
 93         OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
 94         PC7_PF_USBOTG_DATA5,
 95         PC8_PF_USBOTG_DATA6,
 96         PC9_PF_USBOTG_DATA0,
 97         PC10_PF_USBOTG_DATA2,
 98         PC11_PF_USBOTG_DATA1,
 99         PC12_PF_USBOTG_DATA4,
100         PC13_PF_USBOTG_DATA3,
101         PE0_PF_USBOTG_NXT,
102         PE1_PF_USBOTG_STP,
103         PE2_PF_USBOTG_DIR,
104         PE24_PF_USBOTG_CLK,
105         PE25_PF_USBOTG_DATA7,
106         /* CSPI1 */
107         PD31_PF_CSPI1_MOSI,
108         PD30_PF_CSPI1_MISO,
109         PD29_PF_CSPI1_SCLK,
110         PD25_PF_CSPI1_RDY,
111         SPI1_SS0 | GPIO_GPIO | GPIO_OUT,
112         /* CSPI2 */
113         PD22_PF_CSPI2_SCLK,
114         PD23_PF_CSPI2_MISO,
115         PD24_PF_CSPI2_MOSI,
116         SPI2_SS0 | GPIO_GPIO | GPIO_OUT,
117         /* I2C1 */
118         PD17_PF_I2C_DATA,
119         PD18_PF_I2C_CLK,
120         /* PMIC INT */
121         PMIC_INT | GPIO_GPIO | GPIO_IN,
122         /* LCD */
123         PA5_PF_LSCLK,
124         PA6_PF_LD0,
125         PA7_PF_LD1,
126         PA8_PF_LD2,
127         PA9_PF_LD3,
128         PA10_PF_LD4,
129         PA11_PF_LD5,
130         PA12_PF_LD6,
131         PA13_PF_LD7,
132         PA14_PF_LD8,
133         PA15_PF_LD9,
134         PA16_PF_LD10,
135         PA17_PF_LD11,
136         PA18_PF_LD12,
137         PA19_PF_LD13,
138         PA20_PF_LD14,
139         PA21_PF_LD15,
140         PA22_PF_LD16,
141         PA23_PF_LD17,
142         PA28_PF_HSYNC,
143         PA29_PF_VSYNC,
144         PA30_PF_CONTRAST,
145         LCD_ENABLE | GPIO_GPIO | GPIO_OUT,
146         LCD_RESET | GPIO_GPIO | GPIO_OUT,
147         /* CSI */
148         PB10_PF_CSI_D0,
149         PB11_PF_CSI_D1,
150         PB12_PF_CSI_D2,
151         PB13_PF_CSI_D3,
152         PB14_PF_CSI_D4,
153         PB15_PF_CSI_MCLK,
154         PB16_PF_CSI_PIXCLK,
155         PB17_PF_CSI_D5,
156         PB18_PF_CSI_D6,
157         PB19_PF_CSI_D7,
158         PB20_PF_CSI_VSYNC,
159         PB21_PF_CSI_HSYNC,
160         CSI_PWRDWN | GPIO_GPIO | GPIO_OUT,
161         CSI_RESET | GPIO_GPIO | GPIO_OUT,
162         /* SSI4 */
163         PC16_PF_SSI4_FS,
164         PC17_PF_SSI4_RXD,
165         PC18_PF_SSI4_TXD,
166         PC19_PF_SSI4_CLK,
167 };
168 
169 static struct gpio mx27_3ds_camera_gpios[] = {
170         { CSI_PWRDWN, GPIOF_OUT_INIT_HIGH, "camera-power" },
171         { CSI_RESET, GPIOF_OUT_INIT_HIGH, "camera-reset" },
172 };
173 
174 static const struct imxuart_platform_data uart_pdata __initconst = {
175         .flags = IMXUART_HAVE_RTSCTS,
176 };
177 
178 /*
179  * Matrix keyboard
180  */
181 
182 static const uint32_t mx27_3ds_keymap[] = {
183         KEY(0, 0, KEY_UP),
184         KEY(0, 1, KEY_DOWN),
185         KEY(1, 0, KEY_RIGHT),
186         KEY(1, 1, KEY_LEFT),
187         KEY(1, 2, KEY_ENTER),
188         KEY(2, 0, KEY_F6),
189         KEY(2, 1, KEY_F8),
190         KEY(2, 2, KEY_F9),
191         KEY(2, 3, KEY_F10),
192 };
193 
194 static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
195         .keymap         = mx27_3ds_keymap,
196         .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
197 };
198 
199 static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
200                                 void *data)
201 {
202         return request_irq(gpio_to_irq(SD1_CD), detect_irq,
203         IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
204 }
205 
206 static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
207 {
208         free_irq(gpio_to_irq(SD1_CD), data);
209 }
210 
211 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
212         .init = mx27_3ds_sdhc1_init,
213         .exit = mx27_3ds_sdhc1_exit,
214 };
215 
216 static void mx27_3ds_sdhc1_enable_level_translator(void)
217 {
218         /* Turn on TXB0108 OE pin */
219         gpio_request(SD1_EN_GPIO, "sd1_enable");
220         gpio_direction_output(SD1_EN_GPIO, 1);
221 }
222 
223 
224 static int otg_phy_init(void)
225 {
226         gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
227         gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
228         mdelay(1);
229         gpio_set_value(OTG_PHY_RESET_GPIO, 1);
230         return 0;
231 }
232 
233 static int mx27_3ds_otg_init(struct platform_device *pdev)
234 {
235         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
236 }
237 
238 static struct mxc_usbh_platform_data otg_pdata __initdata = {
239         .init   = mx27_3ds_otg_init,
240         .portsc = MXC_EHCI_MODE_ULPI,
241 };
242 
243 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
244         .operating_mode = FSL_USB2_DR_DEVICE,
245         .phy_mode       = FSL_USB2_PHY_ULPI,
246 };
247 
248 static bool otg_mode_host __initdata;
249 
250 static int __init mx27_3ds_otg_mode(char *options)
251 {
252         if (!strcmp(options, "host"))
253                 otg_mode_host = true;
254         else if (!strcmp(options, "device"))
255                 otg_mode_host = false;
256         else
257                 pr_info("otg_mode neither \"host\" nor \"device\". "
258                         "Defaulting to device\n");
259         return 1;
260 }
261 __setup("otg_mode=", mx27_3ds_otg_mode);
262 
263 /* Regulators */
264 static struct regulator_init_data gpo_init = {
265         .constraints = {
266                 .boot_on = 1,
267                 .always_on = 1,
268         }
269 };
270 
271 static struct regulator_consumer_supply vmmc1_consumers[] = {
272         REGULATOR_SUPPLY("vcore", "spi0.0"),
273         REGULATOR_SUPPLY("cmos_2v8", "soc-camera-pdrv.0"),
274 };
275 
276 static struct regulator_init_data vmmc1_init = {
277         .constraints = {
278                 .min_uV = 2800000,
279                 .max_uV = 2800000,
280                 .apply_uV = 1,
281                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
282                                   REGULATOR_CHANGE_STATUS,
283         },
284         .num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
285         .consumer_supplies = vmmc1_consumers,
286 };
287 
288 static struct regulator_consumer_supply vgen_consumers[] = {
289         REGULATOR_SUPPLY("vdd", "spi0.0"),
290 };
291 
292 static struct regulator_init_data vgen_init = {
293         .constraints = {
294                 .min_uV = 1800000,
295                 .max_uV = 1800000,
296                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
297         },
298         .num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
299         .consumer_supplies = vgen_consumers,
300 };
301 
302 static struct regulator_consumer_supply vvib_consumers[] = {
303         REGULATOR_SUPPLY("cmos_vcore", "soc-camera-pdrv.0"),
304 };
305 
306 static struct regulator_init_data vvib_init = {
307         .constraints = {
308                 .min_uV = 1300000,
309                 .max_uV = 1300000,
310                 .apply_uV = 1,
311                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
312                                   REGULATOR_CHANGE_STATUS,
313         },
314         .num_consumer_supplies = ARRAY_SIZE(vvib_consumers),
315         .consumer_supplies = vvib_consumers,
316 };
317 
318 static struct mc13xxx_regulator_init_data mx27_3ds_regulators[] = {
319         {
320                 .id = MC13783_REG_VMMC1,
321                 .init_data = &vmmc1_init,
322         }, {
323                 .id = MC13783_REG_VGEN,
324                 .init_data = &vgen_init,
325         }, {
326                 .id = MC13783_REG_GPO1, /* Turn on 1.8V */
327                 .init_data = &gpo_init,
328         }, {
329                 .id = MC13783_REG_GPO3, /* Turn on 3.3V */
330                 .init_data = &gpo_init,
331         }, {
332                 .id = MC13783_REG_VVIB,  /* Power OV2640 */
333                 .init_data = &vvib_init,
334         },
335 };
336 
337 /* MC13783 */
338 static struct mc13xxx_codec_platform_data mx27_3ds_codec = {
339         .dac_ssi_port = MC13783_SSI1_PORT,
340         .adc_ssi_port = MC13783_SSI1_PORT,
341 };
342 
343 static struct mc13xxx_platform_data mc13783_pdata = {
344         .regulators = {
345                 .regulators = mx27_3ds_regulators,
346                 .num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
347 
348         },
349         .flags  = MC13XXX_USE_TOUCHSCREEN | MC13XXX_USE_RTC |
350                                                 MC13XXX_USE_CODEC,
351         .codec = &mx27_3ds_codec,
352 };
353 
354 static struct imx_ssi_platform_data mx27_3ds_ssi_pdata = {
355         .flags = IMX_SSI_DMA | IMX_SSI_NET,
356 };
357 
358 /* SPI */
359 static int spi1_chipselect[] = {SPI1_SS0};
360 
361 static const struct spi_imx_master spi1_pdata __initconst = {
362         .chipselect     = spi1_chipselect,
363         .num_chipselect = ARRAY_SIZE(spi1_chipselect),
364 };
365 
366 static int spi2_chipselect[] = {SPI2_SS0};
367 
368 static const struct spi_imx_master spi2_pdata __initconst = {
369         .chipselect     = spi2_chipselect,
370         .num_chipselect = ARRAY_SIZE(spi2_chipselect),
371 };
372 
373 static int mx27_3ds_camera_power(struct device *dev, int on)
374 {
375         /* enable or disable the camera */
376         pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
377         gpio_set_value(CSI_PWRDWN, on ? 0 : 1);
378 
379         if (!on)
380                 goto out;
381 
382         /* If enabled, give a reset impulse */
383         gpio_set_value(CSI_RESET, 0);
384         msleep(20);
385         gpio_set_value(CSI_RESET, 1);
386         msleep(100);
387 
388 out:
389         return 0;
390 }
391 
392 static struct i2c_board_info mx27_3ds_i2c_camera = {
393         I2C_BOARD_INFO("ov2640", 0x30),
394 };
395 
396 static struct regulator_bulk_data mx27_3ds_camera_regs[] = {
397         { .supply = "cmos_vcore" },
398         { .supply = "cmos_2v8" },
399 };
400 
401 static struct soc_camera_link iclink_ov2640 = {
402         .bus_id         = 0,
403         .board_info     = &mx27_3ds_i2c_camera,
404         .i2c_adapter_id = 0,
405         .power          = mx27_3ds_camera_power,
406         .regulators     = mx27_3ds_camera_regs,
407         .num_regulators = ARRAY_SIZE(mx27_3ds_camera_regs),
408 };
409 
410 static struct platform_device mx27_3ds_ov2640 = {
411         .name   = "soc-camera-pdrv",
412         .id     = 0,
413         .dev    = {
414                 .platform_data = &iclink_ov2640,
415         },
416 };
417 
418 static struct imx_fb_videomode mx27_3ds_modes[] = {
419         {       /* 480x640 @ 60 Hz */
420                 .mode = {
421                         .name           = "Epson-VGA",
422                         .refresh        = 60,
423                         .xres           = 480,
424                         .yres           = 640,
425                         .pixclock       = 41701,
426                         .left_margin    = 20,
427                         .right_margin   = 41,
428                         .upper_margin   = 10,
429                         .lower_margin   = 5,
430                         .hsync_len      = 20,
431                         .vsync_len      = 10,
432                         .sync           = FB_SYNC_OE_ACT_HIGH |
433                                                 FB_SYNC_CLK_INVERT,
434                         .vmode          = FB_VMODE_NONINTERLACED,
435                         .flag           = 0,
436                 },
437                 .bpp            = 16,
438                 .pcr            = 0xFAC08B82,
439         },
440 };
441 
442 static const struct imx_fb_platform_data mx27_3ds_fb_data __initconst = {
443         .mode = mx27_3ds_modes,
444         .num_modes = ARRAY_SIZE(mx27_3ds_modes),
445         .pwmr           = 0x00A903FF,
446         .lscr1          = 0x00120300,
447         .dmacr          = 0x00020010,
448 };
449 
450 /* LCD */
451 static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
452         .reset_gpio             = LCD_RESET,
453         .data_enable_gpio       = LCD_ENABLE,
454 };
455 
456 static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
457         {
458                 .modalias       = "mc13783",
459                 .max_speed_hz   = 1000000,
460                 .bus_num        = 1,
461                 .chip_select    = 0, /* SS0 */
462                 .platform_data  = &mc13783_pdata,
463                 /* irq number is run-time assigned */
464                 .mode = SPI_CS_HIGH,
465         }, {
466                 .modalias       = "l4f00242t03",
467                 .max_speed_hz   = 5000000,
468                 .bus_num        = 0,
469                 .chip_select    = 0, /* SS0 */
470                 .platform_data  = &mx27_3ds_lcd_pdata,
471         },
472 };
473 
474 static struct platform_device *devices[] __initdata = {
475         &mx27_3ds_ov2640,
476 };
477 
478 static const struct mx2_camera_platform_data mx27_3ds_cam_pdata __initconst = {
479         .clk = 26000000,
480 };
481 
482 static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
483         .bitrate = 100000,
484 };
485 
486 static void __init mx27pdk_init(void)
487 {
488         int ret;
489         imx27_soc_init();
490 
491         mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
492                 "mx27pdk");
493         mx27_3ds_sdhc1_enable_level_translator();
494         imx27_add_imx_uart0(&uart_pdata);
495         imx27_add_fec(NULL);
496         imx27_add_imx_keypad(&mx27_3ds_keymap_data);
497         imx27_add_mxc_mmc(0, &sdhc1_pdata);
498         imx27_add_imx2_wdt();
499         otg_phy_init();
500 
501         if (otg_mode_host) {
502                 otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
503                                 ULPI_OTG_DRVVBUS_EXT);
504 
505                 if (otg_pdata.otg)
506                         imx27_add_mxc_ehci_otg(&otg_pdata);
507         }
508 
509         if (!otg_mode_host)
510                 imx27_add_fsl_usb2_udc(&otg_device_pdata);
511 
512         imx27_add_spi_imx1(&spi2_pdata);
513         imx27_add_spi_imx0(&spi1_pdata);
514         mx27_3ds_spi_devs[0].irq = gpio_to_irq(PMIC_INT);
515         spi_register_board_info(mx27_3ds_spi_devs,
516                                                 ARRAY_SIZE(mx27_3ds_spi_devs));
517 
518         if (mxc_expio_init(MX27_CS5_BASE_ADDR, IMX_GPIO_NR(3, 28)))
519                 pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
520         imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
521         platform_add_devices(devices, ARRAY_SIZE(devices));
522         imx27_add_imx_fb(&mx27_3ds_fb_data);
523 
524         ret = gpio_request_array(mx27_3ds_camera_gpios,
525                                  ARRAY_SIZE(mx27_3ds_camera_gpios));
526         if (ret) {
527                 pr_err("Failed to request camera gpios");
528                 iclink_ov2640.power = NULL;
529         }
530 
531         imx27_add_mx2_camera(&mx27_3ds_cam_pdata);
532         imx27_add_imx_ssi(0, &mx27_3ds_ssi_pdata);
533 
534         imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
535 }
536 
537 static void __init mx27pdk_timer_init(void)
538 {
539         mx27_clocks_init(26000000);
540 }
541 
542 MACHINE_START(MX27_3DS, "Freescale MX27PDK")
543         /* maintainer: Freescale Semiconductor, Inc. */
544         .atag_offset = 0x100,
545         .map_io = mx27_map_io,
546         .init_early = imx27_init_early,
547         .init_irq = mx27_init_irq,
548         .init_time      = mx27pdk_timer_init,
549         .init_machine = mx27pdk_init,
550         .restart        = mxc_restart,
551 MACHINE_END
552 

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