mx31moboard: make usbh2 enable gpio claim more atomic
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / arm / mach-mx3 / mach-mx31moboard.c
blobc357a72ee40646eca75cee081a758de17c1965bc
1 /*
2 * Copyright (C) 2008 Valentin Longchamp, EPFL Mobots group
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #include <linux/delay.h>
20 #include <linux/dma-mapping.h>
21 #include <linux/fsl_devices.h>
22 #include <linux/gpio.h>
23 #include <linux/init.h>
24 #include <linux/interrupt.h>
25 #include <linux/leds.h>
26 #include <linux/memory.h>
27 #include <linux/mtd/physmap.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/platform_device.h>
30 #include <linux/regulator/machine.h>
31 #include <linux/mfd/mc13783.h>
32 #include <linux/spi/spi.h>
33 #include <linux/types.h>
35 #include <linux/usb/otg.h>
36 #include <linux/usb/ulpi.h>
38 #include <asm/mach-types.h>
39 #include <asm/mach/arch.h>
40 #include <asm/mach/time.h>
41 #include <asm/mach/map.h>
42 #include <mach/board-mx31moboard.h>
43 #include <mach/common.h>
44 #include <mach/hardware.h>
45 #include <mach/imx-uart.h>
46 #include <mach/iomux-mx3.h>
47 #include <mach/ipu.h>
48 #include <mach/i2c.h>
49 #include <mach/mmc.h>
50 #include <mach/mxc_ehci.h>
51 #include <mach/mx3_camera.h>
52 #include <mach/spi.h>
53 #include <mach/ulpi.h>
55 #include "devices.h"
57 static unsigned int moboard_pins[] = {
58 /* UART0 */
59 MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
60 MX31_PIN_CTS1__GPIO2_7,
61 /* UART4 */
62 MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
63 MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
64 /* I2C0 */
65 MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
66 /* I2C1 */
67 MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
68 /* SDHC1 */
69 MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
70 MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
71 MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
72 MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
73 /* USB reset */
74 MX31_PIN_GPIO1_0__GPIO1_0,
75 /* USB OTG */
76 MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
77 MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
78 MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
79 MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
80 MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
81 MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
82 MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
83 MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
84 MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
85 MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
86 MX31_PIN_USB_OC__GPIO1_30,
87 /* USB H2 */
88 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
89 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
90 MX31_PIN_STXD3__USBH2_DATA2, MX31_PIN_SRXD3__USBH2_DATA3,
91 MX31_PIN_SCK3__USBH2_DATA4, MX31_PIN_SFS3__USBH2_DATA5,
92 MX31_PIN_STXD6__USBH2_DATA6, MX31_PIN_SRXD6__USBH2_DATA7,
93 MX31_PIN_USBH2_CLK__USBH2_CLK, MX31_PIN_USBH2_DIR__USBH2_DIR,
94 MX31_PIN_USBH2_NXT__USBH2_NXT, MX31_PIN_USBH2_STP__USBH2_STP,
95 MX31_PIN_SCK6__GPIO1_25,
96 /* LEDs */
97 MX31_PIN_SVEN0__GPIO2_0, MX31_PIN_STX0__GPIO2_1,
98 MX31_PIN_SRX0__GPIO2_2, MX31_PIN_SIMPD0__GPIO2_3,
99 /* SEL */
100 MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
101 MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
102 /* SPI1 */
103 MX31_PIN_CSPI2_MOSI__MOSI, MX31_PIN_CSPI2_MISO__MISO,
104 MX31_PIN_CSPI2_SCLK__SCLK, MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
105 MX31_PIN_CSPI2_SS0__SS0, MX31_PIN_CSPI2_SS2__SS2,
106 /* Atlas IRQ */
107 MX31_PIN_GPIO1_3__GPIO1_3,
108 /* SPI2 */
109 MX31_PIN_CSPI3_MOSI__MOSI, MX31_PIN_CSPI3_MISO__MISO,
110 MX31_PIN_CSPI3_SCLK__SCLK, MX31_PIN_CSPI3_SPI_RDY__SPI_RDY,
111 MX31_PIN_CSPI2_SS1__CSPI3_SS1,
114 static struct physmap_flash_data mx31moboard_flash_data = {
115 .width = 2,
118 static struct resource mx31moboard_flash_resource = {
119 .start = 0xa0000000,
120 .end = 0xa1ffffff,
121 .flags = IORESOURCE_MEM,
124 static struct platform_device mx31moboard_flash = {
125 .name = "physmap-flash",
126 .id = 0,
127 .dev = {
128 .platform_data = &mx31moboard_flash_data,
130 .resource = &mx31moboard_flash_resource,
131 .num_resources = 1,
134 static int moboard_uart0_init(struct platform_device *pdev)
136 gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack");
137 gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
138 return 0;
141 static struct imxuart_platform_data uart0_pdata = {
142 .init = moboard_uart0_init,
145 static struct imxuart_platform_data uart4_pdata = {
146 .flags = IMXUART_HAVE_RTSCTS,
149 static struct imxi2c_platform_data moboard_i2c0_pdata = {
150 .bitrate = 400000,
153 static struct imxi2c_platform_data moboard_i2c1_pdata = {
154 .bitrate = 100000,
157 static int moboard_spi1_cs[] = {
158 MXC_SPI_CS(0),
159 MXC_SPI_CS(2),
162 static struct spi_imx_master moboard_spi1_master = {
163 .chipselect = moboard_spi1_cs,
164 .num_chipselect = ARRAY_SIZE(moboard_spi1_cs),
167 static struct regulator_consumer_supply sdhc_consumers[] = {
169 .dev = &mxcsdhc_device0.dev,
170 .supply = "sdhc0_vcc",
173 .dev = &mxcsdhc_device1.dev,
174 .supply = "sdhc1_vcc",
178 static struct regulator_init_data sdhc_vreg_data = {
179 .constraints = {
180 .min_uV = 2700000,
181 .max_uV = 3000000,
182 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
183 REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
184 .valid_modes_mask = REGULATOR_MODE_NORMAL |
185 REGULATOR_MODE_FAST,
186 .always_on = 0,
187 .boot_on = 1,
189 .num_consumer_supplies = ARRAY_SIZE(sdhc_consumers),
190 .consumer_supplies = sdhc_consumers,
193 static struct regulator_consumer_supply cam_consumers[] = {
195 .dev = &mx3_camera.dev,
196 .supply = "cam_vcc",
200 static struct regulator_init_data cam_vreg_data = {
201 .constraints = {
202 .min_uV = 2700000,
203 .max_uV = 3000000,
204 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
205 REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
206 .valid_modes_mask = REGULATOR_MODE_NORMAL |
207 REGULATOR_MODE_FAST,
208 .always_on = 0,
209 .boot_on = 1,
211 .num_consumer_supplies = ARRAY_SIZE(cam_consumers),
212 .consumer_supplies = cam_consumers,
215 static struct mc13783_regulator_init_data moboard_regulators[] = {
217 .id = MC13783_REGU_VMMC1,
218 .init_data = &sdhc_vreg_data,
221 .id = MC13783_REGU_VCAM,
222 .init_data = &cam_vreg_data,
226 static struct mc13783_platform_data moboard_pmic = {
227 .regulators = moboard_regulators,
228 .num_regulators = ARRAY_SIZE(moboard_regulators),
229 .flags = MC13783_USE_REGULATOR | MC13783_USE_RTC |
230 MC13783_USE_ADC,
233 static struct spi_board_info moboard_spi_board_info[] __initdata = {
235 .modalias = "mc13783",
236 .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
237 .max_speed_hz = 300000,
238 .bus_num = 1,
239 .chip_select = 0,
240 .platform_data = &moboard_pmic,
241 .mode = SPI_CS_HIGH,
245 static int moboard_spi2_cs[] = {
246 MXC_SPI_CS(1),
249 static struct spi_imx_master moboard_spi2_master = {
250 .chipselect = moboard_spi2_cs,
251 .num_chipselect = ARRAY_SIZE(moboard_spi2_cs),
254 #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
255 #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
257 static int moboard_sdhc1_get_ro(struct device *dev)
259 return !gpio_get_value(SDHC1_WP);
262 static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
263 void *data)
265 int ret;
267 ret = gpio_request(SDHC1_CD, "sdhc-detect");
268 if (ret)
269 return ret;
271 gpio_direction_input(SDHC1_CD);
273 ret = gpio_request(SDHC1_WP, "sdhc-wp");
274 if (ret)
275 goto err_gpio_free;
276 gpio_direction_input(SDHC1_WP);
278 ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
279 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
280 "sdhc1-card-detect", data);
281 if (ret)
282 goto err_gpio_free_2;
284 return 0;
286 err_gpio_free_2:
287 gpio_free(SDHC1_WP);
288 err_gpio_free:
289 gpio_free(SDHC1_CD);
291 return ret;
294 static void moboard_sdhc1_exit(struct device *dev, void *data)
296 free_irq(gpio_to_irq(SDHC1_CD), data);
297 gpio_free(SDHC1_WP);
298 gpio_free(SDHC1_CD);
301 static struct imxmmc_platform_data sdhc1_pdata = {
302 .get_ro = moboard_sdhc1_get_ro,
303 .init = moboard_sdhc1_init,
304 .exit = moboard_sdhc1_exit,
308 * this pin is dedicated for all mx31moboard systems, so we do it here
310 #define USB_RESET_B IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
312 static void usb_xcvr_reset(void)
314 gpio_request(USB_RESET_B, "usb-reset");
315 gpio_direction_output(USB_RESET_B, 0);
316 mdelay(1);
317 gpio_set_value(USB_RESET_B, 1);
320 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
321 PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
323 #define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
325 static void moboard_usbotg_init(void)
327 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
328 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
329 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
330 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
331 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
332 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
333 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
334 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
335 mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
336 mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
337 mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
338 mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
340 gpio_request(OTG_EN_B, "usb-udc-en");
341 gpio_direction_output(OTG_EN_B, 0);
344 static struct fsl_usb2_platform_data usb_pdata = {
345 .operating_mode = FSL_USB2_DR_DEVICE,
346 .phy_mode = FSL_USB2_PHY_ULPI,
349 #if defined(CONFIG_USB_ULPI)
351 #define USBH2_EN_B IOMUX_TO_GPIO(MX31_PIN_SCK6)
353 static int moboard_usbh2_hw_init(struct platform_device *pdev)
355 int ret;
357 mxc_iomux_set_gpr(MUX_PGP_UH2, true);
359 mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
360 mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
361 mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
362 mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
363 mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
364 mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
365 mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
366 mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
367 mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
368 mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
369 mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
370 mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
372 ret = gpio_request(USBH2_EN_B, "usbh2-en");
373 if (ret)
374 return ret;
375 gpio_direction_output(USBH2_EN_B, 0);
377 return 0;
380 static int moboard_usbh2_hw_exit(struct platform_device *pdev)
382 gpio_free(USBH2_EN_B);
383 return 0;
386 static struct mxc_usbh_platform_data usbh2_pdata = {
387 .init = moboard_usbh2_hw_init,
388 .exit = moboard_usbh2_hw_exit,
389 .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
390 .flags = MXC_EHCI_POWER_PINS_ENABLED,
393 static int __init moboard_usbh2_init(void)
395 usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
396 USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
398 return mxc_register_device(&mxc_usbh2, &usbh2_pdata);
400 #else
401 static inline int moboard_usbh2_init(void) { return 0; }
402 #endif
405 static struct gpio_led mx31moboard_leds[] = {
407 .name = "coreboard-led-0:red:running",
408 .default_trigger = "heartbeat",
409 .gpio = IOMUX_TO_GPIO(MX31_PIN_SVEN0),
410 }, {
411 .name = "coreboard-led-1:red",
412 .gpio = IOMUX_TO_GPIO(MX31_PIN_STX0),
413 }, {
414 .name = "coreboard-led-2:red",
415 .gpio = IOMUX_TO_GPIO(MX31_PIN_SRX0),
416 }, {
417 .name = "coreboard-led-3:red",
418 .gpio = IOMUX_TO_GPIO(MX31_PIN_SIMPD0),
422 static struct gpio_led_platform_data mx31moboard_led_pdata = {
423 .num_leds = ARRAY_SIZE(mx31moboard_leds),
424 .leds = mx31moboard_leds,
427 static struct platform_device mx31moboard_leds_device = {
428 .name = "leds-gpio",
429 .id = -1,
430 .dev = {
431 .platform_data = &mx31moboard_led_pdata,
435 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
436 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
437 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
438 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
440 static void mx31moboard_init_sel_gpios(void)
442 if (!gpio_request(SEL0, "sel0")) {
443 gpio_direction_input(SEL0);
444 gpio_export(SEL0, true);
447 if (!gpio_request(SEL1, "sel1")) {
448 gpio_direction_input(SEL1);
449 gpio_export(SEL1, true);
452 if (!gpio_request(SEL2, "sel2")) {
453 gpio_direction_input(SEL2);
454 gpio_export(SEL2, true);
457 if (!gpio_request(SEL3, "sel3")) {
458 gpio_direction_input(SEL3);
459 gpio_export(SEL3, true);
463 static struct ipu_platform_data mx3_ipu_data = {
464 .irq_base = MXC_IPU_IRQ_START,
467 static struct platform_device *devices[] __initdata = {
468 &mx31moboard_flash,
469 &mx31moboard_leds_device,
472 static struct mx3_camera_pdata camera_pdata = {
473 .dma_dev = &mx3_ipu.dev,
474 .flags = MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10,
475 .mclk_10khz = 4800,
478 #define CAMERA_BUF_SIZE (4*1024*1024)
480 static int __init mx31moboard_cam_alloc_dma(const size_t buf_size)
482 dma_addr_t dma_handle;
483 void *buf;
484 int dma;
486 if (buf_size < 2 * 1024 * 1024)
487 return -EINVAL;
489 buf = dma_alloc_coherent(NULL, buf_size, &dma_handle, GFP_KERNEL);
490 if (!buf) {
491 pr_err("%s: cannot allocate camera buffer-memory\n", __func__);
492 return -ENOMEM;
495 memset(buf, 0, buf_size);
497 dma = dma_declare_coherent_memory(&mx3_camera.dev,
498 dma_handle, dma_handle, buf_size,
499 DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
501 /* The way we call dma_declare_coherent_memory only a malloc can fail */
502 return dma & DMA_MEMORY_MAP ? 0 : -ENOMEM;
505 static int mx31moboard_baseboard;
506 core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
509 * Board specific initialization.
511 static void __init mxc_board_init(void)
513 mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
514 "moboard");
516 platform_add_devices(devices, ARRAY_SIZE(devices));
518 mxc_register_device(&mxc_uart_device0, &uart0_pdata);
520 mxc_register_device(&mxc_uart_device4, &uart4_pdata);
522 mx31moboard_init_sel_gpios();
524 mxc_register_device(&mxc_i2c_device0, &moboard_i2c0_pdata);
525 mxc_register_device(&mxc_i2c_device1, &moboard_i2c1_pdata);
527 mxc_register_device(&mxc_spi_device1, &moboard_spi1_master);
528 mxc_register_device(&mxc_spi_device2, &moboard_spi2_master);
530 gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3), "pmic-irq");
531 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
532 spi_register_board_info(moboard_spi_board_info,
533 ARRAY_SIZE(moboard_spi_board_info));
535 mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata);
537 mxc_register_device(&mx3_ipu, &mx3_ipu_data);
538 if (!mx31moboard_cam_alloc_dma(CAMERA_BUF_SIZE))
539 mxc_register_device(&mx3_camera, &camera_pdata);
541 usb_xcvr_reset();
543 moboard_usbotg_init();
544 mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
545 moboard_usbh2_init();
547 switch (mx31moboard_baseboard) {
548 case MX31NOBOARD:
549 break;
550 case MX31DEVBOARD:
551 mx31moboard_devboard_init();
552 break;
553 case MX31MARXBOT:
554 mx31moboard_marxbot_init();
555 break;
556 default:
557 printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
558 mx31moboard_baseboard);
562 static void __init mx31moboard_timer_init(void)
564 mx31_clocks_init(26000000);
567 struct sys_timer mx31moboard_timer = {
568 .init = mx31moboard_timer_init,
571 MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
572 /* Maintainer: Valentin Longchamp, EPFL Mobots group */
573 .phys_io = MX31_AIPS1_BASE_ADDR,
574 .io_pg_offst = (MX31_AIPS1_BASE_ADDR_VIRT >> 18) & 0xfffc,
575 .boot_params = MX3x_PHYS_OFFSET + 0x100,
576 .map_io = mx31_map_io,
577 .init_irq = mx31_init_irq,
578 .init_machine = mxc_board_init,
579 .timer = &mx31moboard_timer,
580 MACHINE_END