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[net-next-2.6.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>
a2ef4562 25#include <linux/fsl_devices.h>
54c1f636 26#include <linux/input/matrix_keypad.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>
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37
38#include "devices-imx31.h"
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39#include "devices.h"
40
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41/* CPLD IRQ line for external uart, external ethernet etc */
42#define EXPIO_PARENT_INT IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)
43
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44/*
45 * This file contains the board-specific initialization routines.
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46 */
47
11a332ad 48static int mx31_3ds_pins[] = {
153fa1d8 49 /* UART1 */
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50 MX31_PIN_CTS1__CTS1,
51 MX31_PIN_RTS1__RTS1,
52 MX31_PIN_TXD1__TXD1,
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53 MX31_PIN_RXD1__RXD1,
54 IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
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55 /* SPI 1 */
56 MX31_PIN_CSPI2_SCLK__SCLK,
57 MX31_PIN_CSPI2_MOSI__MOSI,
58 MX31_PIN_CSPI2_MISO__MISO,
59 MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
60 MX31_PIN_CSPI2_SS0__SS0,
61 MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
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62 /* MC13783 IRQ */
63 IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
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64 /* USB OTG reset */
65 IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
66 /* USB OTG */
67 MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
68 MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
69 MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
70 MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
71 MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
72 MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
73 MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
74 MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
75 MX31_PIN_USBOTG_CLK__USBOTG_CLK,
76 MX31_PIN_USBOTG_DIR__USBOTG_DIR,
77 MX31_PIN_USBOTG_NXT__USBOTG_NXT,
78 MX31_PIN_USBOTG_STP__USBOTG_STP,
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79 /*Keyboard*/
80 MX31_PIN_KEY_ROW0_KEY_ROW0,
81 MX31_PIN_KEY_ROW1_KEY_ROW1,
82 MX31_PIN_KEY_ROW2_KEY_ROW2,
83 MX31_PIN_KEY_COL0_KEY_COL0,
84 MX31_PIN_KEY_COL1_KEY_COL1,
85 MX31_PIN_KEY_COL2_KEY_COL2,
86 MX31_PIN_KEY_COL3_KEY_COL3,
87};
88
89/*
90 * Matrix keyboard
91 */
92
93static const uint32_t mx31_3ds_keymap[] = {
94 KEY(0, 0, KEY_UP),
95 KEY(0, 1, KEY_DOWN),
96 KEY(1, 0, KEY_RIGHT),
97 KEY(1, 1, KEY_LEFT),
98 KEY(1, 2, KEY_ENTER),
99 KEY(2, 0, KEY_F6),
100 KEY(2, 1, KEY_F8),
101 KEY(2, 2, KEY_F9),
102 KEY(2, 3, KEY_F10),
103};
104
105static struct matrix_keymap_data mx31_3ds_keymap_data = {
106 .keymap = mx31_3ds_keymap,
107 .keymap_size = ARRAY_SIZE(mx31_3ds_keymap),
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108};
109
110/* Regulators */
111static struct regulator_init_data pwgtx_init = {
112 .constraints = {
113 .boot_on = 1,
114 .always_on = 1,
115 },
116};
117
118static struct mc13783_regulator_init_data mx31_3ds_regulators[] = {
119 {
120 .id = MC13783_REGU_PWGT1SPI, /* Power Gate for ARM core. */
121 .init_data = &pwgtx_init,
122 }, {
123 .id = MC13783_REGU_PWGT2SPI, /* Power Gate for L2 Cache. */
124 .init_data = &pwgtx_init,
125 },
126};
127
128/* MC13783 */
129static struct mc13783_platform_data mc13783_pdata __initdata = {
130 .regulators = mx31_3ds_regulators,
131 .num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
132 .flags = MC13783_USE_REGULATOR,
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133};
134
135/* SPI */
136static int spi1_internal_chipselect[] = {
137 MXC_SPI_CS(0),
138 MXC_SPI_CS(2),
139};
140
06606ff1 141static const struct spi_imx_master spi1_pdata __initconst = {
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142 .chipselect = spi1_internal_chipselect,
143 .num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
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144};
145
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146static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
147 {
148 .modalias = "mc13783",
149 .max_speed_hz = 1000000,
150 .bus_num = 1,
151 .chip_select = 1, /* SS2 */
152 .platform_data = &mc13783_pdata,
153 .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
154 .mode = SPI_CS_HIGH,
155 },
156};
157
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158/*
159 * NAND Flash
160 */
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161static const struct mxc_nand_platform_data
162mx31_3ds_nand_board_info __initconst = {
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163 .width = 1,
164 .hw_ecc = 1,
165#ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
166 .flash_bbt = 1,
167#endif
168};
169
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170/*
171 * USB OTG
172 */
173
174#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
175 PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
176
177#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
178
41f63475 179static int mx31_3ds_usbotg_init(void)
a2ef4562 180{
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181 int err;
182
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183 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
184 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
185 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
186 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
187 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
188 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
189 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
190 mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
191 mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
192 mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
193 mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
194 mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
195
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196 err = gpio_request(USBOTG_RST_B, "otgusb-reset");
197 if (err) {
198 pr_err("Failed to request the USB OTG reset gpio\n");
199 return err;
200 }
201
202 err = gpio_direction_output(USBOTG_RST_B, 0);
203 if (err) {
204 pr_err("Failed to drive the USB OTG reset gpio\n");
205 goto usbotg_free_reset;
206 }
207
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208 mdelay(1);
209 gpio_set_value(USBOTG_RST_B, 1);
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210 return 0;
211
212usbotg_free_reset:
213 gpio_free(USBOTG_RST_B);
214 return err;
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215}
216
217static struct fsl_usb2_platform_data usbotg_pdata = {
218 .operating_mode = FSL_USB2_DR_DEVICE,
219 .phy_mode = FSL_USB2_PHY_ULPI,
220};
221
16cf5c41 222static const struct imxuart_platform_data uart_pdata __initconst = {
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223 .flags = IMXUART_HAVE_RTSCTS,
224};
1553a1ec 225
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226/*
227 * Set up static virtual mappings.
228 */
11a332ad 229static void __init mx31_3ds_map_io(void)
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230{
231 mx31_map_io();
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232}
233
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234/*!
235 * Board specific initialization.
236 */
237static void __init mxc_board_init(void)
238{
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239 mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
240 "mx31_3ds");
153fa1d8 241
16cf5c41 242 imx31_add_imx_uart0(&uart_pdata);
a2ceeef5 243 imx31_add_mxc_nand(&mx31_3ds_nand_board_info);
ae7a3f13 244
4a74bddc 245 imx31_add_spi_imx1(&spi1_pdata);
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246 spi_register_board_info(mx31_3ds_spi_devs,
247 ARRAY_SIZE(mx31_3ds_spi_devs));
135cad36 248
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249 mxc_register_device(&imx_kpp_device, &mx31_3ds_keymap_data);
250
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251 mx31_3ds_usbotg_init();
252 mxc_register_device(&mxc_otg_udc_device, &usbotg_pdata);
253
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254 if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
255 printk(KERN_WARNING "Init of the debug board failed, all "
256 "devices on the debug board are unusable.\n");
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257}
258
11a332ad 259static void __init mx31_3ds_timer_init(void)
1553a1ec 260{
30c730f8 261 mx31_clocks_init(26000000);
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262}
263
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264static struct sys_timer mx31_3ds_timer = {
265 .init = mx31_3ds_timer_init,
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266};
267
268/*
269 * The following uses standard kernel macros defined in arch.h in order to
11a332ad 270 * initialize __mach_desc_MX31_3DS data structure.
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271 */
272MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
273 /* Maintainer: Freescale Semiconductor, Inc. */
34101237 274 .boot_params = MX3x_PHYS_OFFSET + 0x100,
11a332ad 275 .map_io = mx31_3ds_map_io,
c5aa0ad0 276 .init_irq = mx31_init_irq,
1553a1ec 277 .init_machine = mxc_board_init,
11a332ad 278 .timer = &mx31_3ds_timer,
1553a1ec 279MACHINE_END