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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 
 35 #include <asm/mach-types.h>
 36 #include <asm/mach/arch.h>
 37 #include <asm/mach/time.h>
 38 
 39 #include "3ds_debugboard.h"
 40 #include "common.h"
 41 #include "devices-imx27.h"
 42 #include "ehci.h"
 43 #include "hardware.h"
 44 #include "iomux-mx27.h"
 45 #include "ulpi.h"
 46 
 47 #define SD1_EN_GPIO             IMX_GPIO_NR(2, 25)
 48 #define OTG_PHY_RESET_GPIO      IMX_GPIO_NR(2, 23)
 49 #define SPI2_SS0                IMX_GPIO_NR(4, 21)
 50 #define PMIC_INT                IMX_GPIO_NR(3, 14)
 51 #define SPI1_SS0                IMX_GPIO_NR(4, 28)
 52 #define SD1_CD                  IMX_GPIO_NR(2, 26)
 53 #define LCD_RESET               IMX_GPIO_NR(1, 3)
 54 #define LCD_ENABLE              IMX_GPIO_NR(1, 31)
 55 
 56 static const int mx27pdk_pins[] __initconst = {
 57         /* UART1 */
 58         PE12_PF_UART1_TXD,
 59         PE13_PF_UART1_RXD,
 60         PE14_PF_UART1_CTS,
 61         PE15_PF_UART1_RTS,
 62         /* FEC */
 63         PD0_AIN_FEC_TXD0,
 64         PD1_AIN_FEC_TXD1,
 65         PD2_AIN_FEC_TXD2,
 66         PD3_AIN_FEC_TXD3,
 67         PD4_AOUT_FEC_RX_ER,
 68         PD5_AOUT_FEC_RXD1,
 69         PD6_AOUT_FEC_RXD2,
 70         PD7_AOUT_FEC_RXD3,
 71         PD8_AF_FEC_MDIO,
 72         PD9_AIN_FEC_MDC,
 73         PD10_AOUT_FEC_CRS,
 74         PD11_AOUT_FEC_TX_CLK,
 75         PD12_AOUT_FEC_RXD0,
 76         PD13_AOUT_FEC_RX_DV,
 77         PD14_AOUT_FEC_RX_CLK,
 78         PD15_AOUT_FEC_COL,
 79         PD16_AIN_FEC_TX_ER,
 80         PF23_AIN_FEC_TX_EN,
 81         /* SDHC1 */
 82         PE18_PF_SD1_D0,
 83         PE19_PF_SD1_D1,
 84         PE20_PF_SD1_D2,
 85         PE21_PF_SD1_D3,
 86         PE22_PF_SD1_CMD,
 87         PE23_PF_SD1_CLK,
 88         SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
 89         /* OTG */
 90         OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
 91         PC7_PF_USBOTG_DATA5,
 92         PC8_PF_USBOTG_DATA6,
 93         PC9_PF_USBOTG_DATA0,
 94         PC10_PF_USBOTG_DATA2,
 95         PC11_PF_USBOTG_DATA1,
 96         PC12_PF_USBOTG_DATA4,
 97         PC13_PF_USBOTG_DATA3,
 98         PE0_PF_USBOTG_NXT,
 99         PE1_PF_USBOTG_STP,
100         PE2_PF_USBOTG_DIR,
101         PE24_PF_USBOTG_CLK,
102         PE25_PF_USBOTG_DATA7,
103         /* CSPI1 */
104         PD31_PF_CSPI1_MOSI,
105         PD30_PF_CSPI1_MISO,
106         PD29_PF_CSPI1_SCLK,
107         PD25_PF_CSPI1_RDY,
108         SPI1_SS0 | GPIO_GPIO | GPIO_OUT,
109         /* CSPI2 */
110         PD22_PF_CSPI2_SCLK,
111         PD23_PF_CSPI2_MISO,
112         PD24_PF_CSPI2_MOSI,
113         SPI2_SS0 | GPIO_GPIO | GPIO_OUT,
114         /* I2C1 */
115         PD17_PF_I2C_DATA,
116         PD18_PF_I2C_CLK,
117         /* PMIC INT */
118         PMIC_INT | GPIO_GPIO | GPIO_IN,
119         /* LCD */
120         PA5_PF_LSCLK,
121         PA6_PF_LD0,
122         PA7_PF_LD1,
123         PA8_PF_LD2,
124         PA9_PF_LD3,
125         PA10_PF_LD4,
126         PA11_PF_LD5,
127         PA12_PF_LD6,
128         PA13_PF_LD7,
129         PA14_PF_LD8,
130         PA15_PF_LD9,
131         PA16_PF_LD10,
132         PA17_PF_LD11,
133         PA18_PF_LD12,
134         PA19_PF_LD13,
135         PA20_PF_LD14,
136         PA21_PF_LD15,
137         PA22_PF_LD16,
138         PA23_PF_LD17,
139         PA28_PF_HSYNC,
140         PA29_PF_VSYNC,
141         PA30_PF_CONTRAST,
142         LCD_ENABLE | GPIO_GPIO | GPIO_OUT,
143         LCD_RESET | GPIO_GPIO | GPIO_OUT,
144         /* SSI4 */
145         PC16_PF_SSI4_FS,
146         PC17_PF_SSI4_RXD,
147         PC18_PF_SSI4_TXD,
148         PC19_PF_SSI4_CLK,
149 };
150 
151 static const struct imxuart_platform_data uart_pdata __initconst = {
152         .flags = IMXUART_HAVE_RTSCTS,
153 };
154 
155 /*
156  * Matrix keyboard
157  */
158 
159 static const uint32_t mx27_3ds_keymap[] = {
160         KEY(0, 0, KEY_UP),
161         KEY(0, 1, KEY_DOWN),
162         KEY(1, 0, KEY_RIGHT),
163         KEY(1, 1, KEY_LEFT),
164         KEY(1, 2, KEY_ENTER),
165         KEY(2, 0, KEY_F6),
166         KEY(2, 1, KEY_F8),
167         KEY(2, 2, KEY_F9),
168         KEY(2, 3, KEY_F10),
169 };
170 
171 static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
172         .keymap         = mx27_3ds_keymap,
173         .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
174 };
175 
176 static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
177                                 void *data)
178 {
179         return request_irq(gpio_to_irq(SD1_CD), detect_irq,
180         IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
181 }
182 
183 static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
184 {
185         free_irq(gpio_to_irq(SD1_CD), data);
186 }
187 
188 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
189         .init = mx27_3ds_sdhc1_init,
190         .exit = mx27_3ds_sdhc1_exit,
191 };
192 
193 static void mx27_3ds_sdhc1_enable_level_translator(void)
194 {
195         /* Turn on TXB0108 OE pin */
196         gpio_request(SD1_EN_GPIO, "sd1_enable");
197         gpio_direction_output(SD1_EN_GPIO, 1);
198 }
199 
200 
201 static int otg_phy_init(void)
202 {
203         gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
204         gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
205         mdelay(1);
206         gpio_set_value(OTG_PHY_RESET_GPIO, 1);
207         return 0;
208 }
209 
210 static int mx27_3ds_otg_init(struct platform_device *pdev)
211 {
212         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
213 }
214 
215 static struct mxc_usbh_platform_data otg_pdata __initdata = {
216         .init   = mx27_3ds_otg_init,
217         .portsc = MXC_EHCI_MODE_ULPI,
218 };
219 
220 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
221         .operating_mode = FSL_USB2_DR_DEVICE,
222         .phy_mode       = FSL_USB2_PHY_ULPI,
223 };
224 
225 static bool otg_mode_host __initdata;
226 
227 static int __init mx27_3ds_otg_mode(char *options)
228 {
229         if (!strcmp(options, "host"))
230                 otg_mode_host = true;
231         else if (!strcmp(options, "device"))
232                 otg_mode_host = false;
233         else
234                 pr_info("otg_mode neither \"host\" nor \"device\". "
235                         "Defaulting to device\n");
236         return 1;
237 }
238 __setup("otg_mode=", mx27_3ds_otg_mode);
239 
240 /* Regulators */
241 static struct regulator_init_data gpo_init = {
242         .constraints = {
243                 .boot_on = 1,
244                 .always_on = 1,
245         }
246 };
247 
248 static struct regulator_consumer_supply vmmc1_consumers[] = {
249         REGULATOR_SUPPLY("vcore", "spi0.0"),
250 };
251 
252 static struct regulator_init_data vmmc1_init = {
253         .constraints = {
254                 .min_uV = 2800000,
255                 .max_uV = 2800000,
256                 .apply_uV = 1,
257                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
258                                   REGULATOR_CHANGE_STATUS,
259         },
260         .num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
261         .consumer_supplies = vmmc1_consumers,
262 };
263 
264 static struct regulator_consumer_supply vgen_consumers[] = {
265         REGULATOR_SUPPLY("vdd", "spi0.0"),
266 };
267 
268 static struct regulator_init_data vgen_init = {
269         .constraints = {
270                 .min_uV = 1800000,
271                 .max_uV = 1800000,
272                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
273         },
274         .num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
275         .consumer_supplies = vgen_consumers,
276 };
277 
278 static struct mc13xxx_regulator_init_data mx27_3ds_regulators[] = {
279         {
280                 .id = MC13783_REG_VMMC1,
281                 .init_data = &vmmc1_init,
282         }, {
283                 .id = MC13783_REG_VGEN,
284                 .init_data = &vgen_init,
285         }, {
286                 .id = MC13783_REG_GPO1, /* Turn on 1.8V */
287                 .init_data = &gpo_init,
288         }, {
289                 .id = MC13783_REG_GPO3, /* Turn on 3.3V */
290                 .init_data = &gpo_init,
291         },
292 };
293 
294 /* MC13783 */
295 static struct mc13xxx_codec_platform_data mx27_3ds_codec = {
296         .dac_ssi_port = MC13783_SSI1_PORT,
297         .adc_ssi_port = MC13783_SSI1_PORT,
298 };
299 
300 static struct mc13xxx_platform_data mc13783_pdata = {
301         .regulators = {
302                 .regulators = mx27_3ds_regulators,
303                 .num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
304 
305         },
306         .flags  = MC13XXX_USE_TOUCHSCREEN | MC13XXX_USE_RTC |
307                                                 MC13XXX_USE_CODEC,
308         .codec = &mx27_3ds_codec,
309 };
310 
311 static struct imx_ssi_platform_data mx27_3ds_ssi_pdata = {
312         .flags = IMX_SSI_DMA | IMX_SSI_NET,
313 };
314 
315 /* SPI */
316 static int spi1_chipselect[] = {SPI1_SS0};
317 
318 static const struct spi_imx_master spi1_pdata __initconst = {
319         .chipselect     = spi1_chipselect,
320         .num_chipselect = ARRAY_SIZE(spi1_chipselect),
321 };
322 
323 static int spi2_chipselect[] = {SPI2_SS0};
324 
325 static const struct spi_imx_master spi2_pdata __initconst = {
326         .chipselect     = spi2_chipselect,
327         .num_chipselect = ARRAY_SIZE(spi2_chipselect),
328 };
329 
330 static struct imx_fb_videomode mx27_3ds_modes[] = {
331         {       /* 480x640 @ 60 Hz */
332                 .mode = {
333                         .name           = "Epson-VGA",
334                         .refresh        = 60,
335                         .xres           = 480,
336                         .yres           = 640,
337                         .pixclock       = 41701,
338                         .left_margin    = 20,
339                         .right_margin   = 41,
340                         .upper_margin   = 10,
341                         .lower_margin   = 5,
342                         .hsync_len      = 20,
343                         .vsync_len      = 10,
344                         .sync           = FB_SYNC_OE_ACT_HIGH |
345                                                 FB_SYNC_CLK_INVERT,
346                         .vmode          = FB_VMODE_NONINTERLACED,
347                         .flag           = 0,
348                 },
349                 .bpp            = 16,
350                 .pcr            = 0xFAC08B82,
351         },
352 };
353 
354 static const struct imx_fb_platform_data mx27_3ds_fb_data __initconst = {
355         .mode = mx27_3ds_modes,
356         .num_modes = ARRAY_SIZE(mx27_3ds_modes),
357         .pwmr           = 0x00A903FF,
358         .lscr1          = 0x00120300,
359         .dmacr          = 0x00020010,
360 };
361 
362 /* LCD */
363 static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
364         .reset_gpio             = LCD_RESET,
365         .data_enable_gpio       = LCD_ENABLE,
366 };
367 
368 static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
369         {
370                 .modalias       = "mc13783",
371                 .max_speed_hz   = 1000000,
372                 .bus_num        = 1,
373                 .chip_select    = 0, /* SS0 */
374                 .platform_data  = &mc13783_pdata,
375                 /* irq number is run-time assigned */
376                 .mode = SPI_CS_HIGH,
377         }, {
378                 .modalias       = "l4f00242t03",
379                 .max_speed_hz   = 5000000,
380                 .bus_num        = 0,
381                 .chip_select    = 0, /* SS0 */
382                 .platform_data  = &mx27_3ds_lcd_pdata,
383         },
384 };
385 
386 static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
387         .bitrate = 100000,
388 };
389 
390 static void __init mx27pdk_init(void)
391 {
392         imx27_soc_init();
393 
394         mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
395                 "mx27pdk");
396         imx27_add_imx_uart0(&uart_pdata);
397         imx27_add_fec(NULL);
398         imx27_add_imx_keypad(&mx27_3ds_keymap_data);
399         imx27_add_imx2_wdt();
400 
401         imx27_add_spi_imx1(&spi2_pdata);
402         imx27_add_spi_imx0(&spi1_pdata);
403 
404         imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
405         imx27_add_imx_fb(&mx27_3ds_fb_data);
406 
407         imx27_add_imx_ssi(0, &mx27_3ds_ssi_pdata);
408 }
409 
410 static void __init mx27pdk_late_init(void)
411 {
412         mx27_3ds_sdhc1_enable_level_translator();
413         imx27_add_mxc_mmc(0, &sdhc1_pdata);
414 
415         otg_phy_init();
416 
417         if (otg_mode_host) {
418                 otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
419                                 ULPI_OTG_DRVVBUS_EXT);
420 
421                 if (otg_pdata.otg)
422                         imx27_add_mxc_ehci_otg(&otg_pdata);
423         }
424 
425         if (!otg_mode_host)
426                 imx27_add_fsl_usb2_udc(&otg_device_pdata);
427 
428         mx27_3ds_spi_devs[0].irq = gpio_to_irq(PMIC_INT);
429         spi_register_board_info(mx27_3ds_spi_devs,
430                                 ARRAY_SIZE(mx27_3ds_spi_devs));
431 
432         if (mxc_expio_init(MX27_CS5_BASE_ADDR, IMX_GPIO_NR(3, 28)))
433                 pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
434 
435 
436         imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
437 }
438 
439 static void __init mx27pdk_timer_init(void)
440 {
441         mx27_clocks_init(26000000);
442 }
443 
444 MACHINE_START(MX27_3DS, "Freescale MX27PDK")
445         /* maintainer: Freescale Semiconductor, Inc. */
446         .atag_offset = 0x100,
447         .map_io = mx27_map_io,
448         .init_early = imx27_init_early,
449         .init_irq = mx27_init_irq,
450         .init_time      = mx27pdk_timer_init,
451         .init_machine = mx27pdk_init,
452         .init_late      = mx27pdk_late_init,
453         .restart        = mxc_restart,
454 MACHINE_END
455 

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