ARM: mx3/mx31_3ds: Add support for OTG host mode
[deliverable/linux.git] / arch / arm / mach-mx3 / mach-mx31_3ds.c
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1/*
2 * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
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.
8 *
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.
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13 */
14
a2ef4562 15#include <linux/delay.h>
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16#include <linux/types.h>
17#include <linux/init.h>
18#include <linux/clk.h>
19#include <linux/irq.h>
135cad36 20#include <linux/gpio.h>
2b0c3677 21#include <linux/platform_device.h>
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22#include <linux/mfd/mc13783.h>
23#include <linux/spi/spi.h>
24#include <linux/regulator/machine.h>
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25#include <linux/usb/otg.h>
26#include <linux/usb/ulpi.h>
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27
28#include <mach/hardware.h>
29#include <asm/mach-types.h>
30#include <asm/mach/arch.h>
31#include <asm/mach/time.h>
32#include <asm/memory.h>
33#include <asm/mach/map.h>
34#include <mach/common.h>
1553a1ec 35#include <mach/iomux-mx3.h>
c5d38f08 36#include <mach/3ds_debugboard.h>
1c50e672 37#include <mach/ulpi.h>
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38
39#include "devices-imx31.h"
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40#include "devices.h"
41
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42/* CPLD IRQ line for external uart, external ethernet etc */
43#define EXPIO_PARENT_INT IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)
44
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45/*
46 * This file contains the board-specific initialization routines.
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47 */
48
11a332ad 49static int mx31_3ds_pins[] = {
153fa1d8 50 /* UART1 */
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51 MX31_PIN_CTS1__CTS1,
52 MX31_PIN_RTS1__RTS1,
53 MX31_PIN_TXD1__TXD1,
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54 MX31_PIN_RXD1__RXD1,
55 IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
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56 /* SPI 1 */
57 MX31_PIN_CSPI2_SCLK__SCLK,
58 MX31_PIN_CSPI2_MOSI__MOSI,
59 MX31_PIN_CSPI2_MISO__MISO,
60 MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
61 MX31_PIN_CSPI2_SS0__SS0,
62 MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
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63 /* MC13783 IRQ */
64 IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
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65 /* USB OTG reset */
66 IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
67 /* USB OTG */
68 MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
69 MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
70 MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
71 MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
72 MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
73 MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
74 MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
75 MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
76 MX31_PIN_USBOTG_CLK__USBOTG_CLK,
77 MX31_PIN_USBOTG_DIR__USBOTG_DIR,
78 MX31_PIN_USBOTG_NXT__USBOTG_NXT,
79 MX31_PIN_USBOTG_STP__USBOTG_STP,
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80 /*Keyboard*/
81 MX31_PIN_KEY_ROW0_KEY_ROW0,
82 MX31_PIN_KEY_ROW1_KEY_ROW1,
83 MX31_PIN_KEY_ROW2_KEY_ROW2,
84 MX31_PIN_KEY_COL0_KEY_COL0,
85 MX31_PIN_KEY_COL1_KEY_COL1,
86 MX31_PIN_KEY_COL2_KEY_COL2,
87 MX31_PIN_KEY_COL3_KEY_COL3,
88};
89
90/*
91 * Matrix keyboard
92 */
93
94static const uint32_t mx31_3ds_keymap[] = {
95 KEY(0, 0, KEY_UP),
96 KEY(0, 1, KEY_DOWN),
97 KEY(1, 0, KEY_RIGHT),
98 KEY(1, 1, KEY_LEFT),
99 KEY(1, 2, KEY_ENTER),
100 KEY(2, 0, KEY_F6),
101 KEY(2, 1, KEY_F8),
102 KEY(2, 2, KEY_F9),
103 KEY(2, 3, KEY_F10),
104};
105
d690b4c4 106static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
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107 .keymap = mx31_3ds_keymap,
108 .keymap_size = ARRAY_SIZE(mx31_3ds_keymap),
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109};
110
111/* Regulators */
112static struct regulator_init_data pwgtx_init = {
113 .constraints = {
114 .boot_on = 1,
115 .always_on = 1,
116 },
117};
118
119static struct mc13783_regulator_init_data mx31_3ds_regulators[] = {
120 {
121 .id = MC13783_REGU_PWGT1SPI, /* Power Gate for ARM core. */
122 .init_data = &pwgtx_init,
123 }, {
124 .id = MC13783_REGU_PWGT2SPI, /* Power Gate for L2 Cache. */
125 .init_data = &pwgtx_init,
126 },
127};
128
129/* MC13783 */
130static struct mc13783_platform_data mc13783_pdata __initdata = {
131 .regulators = mx31_3ds_regulators,
132 .num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
bd02a9e5 133 .flags = MC13783_USE_REGULATOR | MC13783_USE_TOUCHSCREEN,
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134};
135
136/* SPI */
137static int spi1_internal_chipselect[] = {
138 MXC_SPI_CS(0),
139 MXC_SPI_CS(2),
140};
141
06606ff1 142static const struct spi_imx_master spi1_pdata __initconst = {
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143 .chipselect = spi1_internal_chipselect,
144 .num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
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145};
146
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147static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
148 {
149 .modalias = "mc13783",
150 .max_speed_hz = 1000000,
151 .bus_num = 1,
152 .chip_select = 1, /* SS2 */
153 .platform_data = &mc13783_pdata,
154 .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
155 .mode = SPI_CS_HIGH,
156 },
157};
158
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159/*
160 * NAND Flash
161 */
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162static const struct mxc_nand_platform_data
163mx31_3ds_nand_board_info __initconst = {
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164 .width = 1,
165 .hw_ecc = 1,
166#ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
167 .flash_bbt = 1,
168#endif
169};
170
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171/*
172 * USB OTG
173 */
174
175#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
176 PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
177
178#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
179
41f63475 180static int mx31_3ds_usbotg_init(void)
a2ef4562 181{
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182 int err;
183
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184 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
185 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
186 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
187 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
188 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
189 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
190 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
191 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
192 mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
193 mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
194 mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
195 mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
196
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197 err = gpio_request(USBOTG_RST_B, "otgusb-reset");
198 if (err) {
199 pr_err("Failed to request the USB OTG reset gpio\n");
200 return err;
201 }
202
203 err = gpio_direction_output(USBOTG_RST_B, 0);
204 if (err) {
205 pr_err("Failed to drive the USB OTG reset gpio\n");
206 goto usbotg_free_reset;
207 }
208
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209 mdelay(1);
210 gpio_set_value(USBOTG_RST_B, 1);
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211 return 0;
212
213usbotg_free_reset:
214 gpio_free(USBOTG_RST_B);
215 return err;
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216}
217
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218#if defined(CONFIG_USB_ULPI)
219static struct mxc_usbh_platform_data otg_pdata __initdata = {
220 .portsc = MXC_EHCI_MODE_ULPI,
221 .flags = MXC_EHCI_POWER_PINS_ENABLED,
222};
223#endif
224
9e1dde33 225static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
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226 .operating_mode = FSL_USB2_DR_DEVICE,
227 .phy_mode = FSL_USB2_PHY_ULPI,
228};
229
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230static int otg_mode_host;
231
232static int __init mx31_3ds_otg_mode(char *options)
233{
234 if (!strcmp(options, "host"))
235 otg_mode_host = 1;
236 else if (!strcmp(options, "device"))
237 otg_mode_host = 0;
238 else
239 pr_info("otg_mode neither \"host\" nor \"device\". "
240 "Defaulting to device\n");
241 return 0;
242}
243__setup("otg_mode=", mx31_3ds_otg_mode);
244
16cf5c41 245static const struct imxuart_platform_data uart_pdata __initconst = {
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246 .flags = IMXUART_HAVE_RTSCTS,
247};
1553a1ec 248
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249/*
250 * Set up static virtual mappings.
251 */
11a332ad 252static void __init mx31_3ds_map_io(void)
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253{
254 mx31_map_io();
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255}
256
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257/*!
258 * Board specific initialization.
259 */
260static void __init mxc_board_init(void)
261{
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262 mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
263 "mx31_3ds");
153fa1d8 264
16cf5c41 265 imx31_add_imx_uart0(&uart_pdata);
a2ceeef5 266 imx31_add_mxc_nand(&mx31_3ds_nand_board_info);
ae7a3f13 267
4a74bddc 268 imx31_add_spi_imx1(&spi1_pdata);
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269 spi_register_board_info(mx31_3ds_spi_devs,
270 ARRAY_SIZE(mx31_3ds_spi_devs));
135cad36 271
d690b4c4 272 imx31_add_imx_keypad(&mx31_3ds_keymap_data);
54c1f636 273
a2ef4562 274 mx31_3ds_usbotg_init();
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275#if defined(CONFIG_USB_ULPI)
276 if (otg_mode_host) {
277 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
278 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
279
280 imx31_add_mxc_ehci_otg(&otg_pdata);
281 }
282#endif
283 if (!otg_mode_host)
284 imx31_add_fsl_usb2_udc(&usbotg_pdata);
a2ef4562 285
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286 if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
287 printk(KERN_WARNING "Init of the debug board failed, all "
288 "devices on the debug board are unusable.\n");
bfdde3a9 289 imx31_add_imx2_wdt(NULL);
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290}
291
11a332ad 292static void __init mx31_3ds_timer_init(void)
1553a1ec 293{
30c730f8 294 mx31_clocks_init(26000000);
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295}
296
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297static struct sys_timer mx31_3ds_timer = {
298 .init = mx31_3ds_timer_init,
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299};
300
301/*
302 * The following uses standard kernel macros defined in arch.h in order to
11a332ad 303 * initialize __mach_desc_MX31_3DS data structure.
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304 */
305MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
306 /* Maintainer: Freescale Semiconductor, Inc. */
34101237 307 .boot_params = MX3x_PHYS_OFFSET + 0x100,
11a332ad 308 .map_io = mx31_3ds_map_io,
c5aa0ad0 309 .init_irq = mx31_init_irq,
1553a1ec 310 .init_machine = mxc_board_init,
11a332ad 311 .timer = &mx31_3ds_timer,
1553a1ec 312MACHINE_END
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