1/*
2 *  Copyright (C) 2000 Deep Blue Solutions Ltd
3 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
4 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
5 *  Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 */
17
18#include <linux/types.h>
19#include <linux/init.h>
20#include <linux/kernel.h>
21#include <linux/memory.h>
22#include <linux/platform_device.h>
23#include <linux/gpio.h>
24#include <linux/moduleparam.h>
25#include <linux/smsc911x.h>
26#include <linux/mfd/mc13783.h>
27#include <linux/spi/spi.h>
28#include <linux/usb/otg.h>
29#include <linux/usb/ulpi.h>
30#include <linux/mtd/physmap.h>
31#include <linux/delay.h>
32#include <linux/regulator/machine.h>
33#include <linux/regulator/fixed.h>
34
35#include <asm/mach-types.h>
36#include <asm/mach/arch.h>
37#include <asm/mach/time.h>
38#include <asm/mach/map.h>
39#include <asm/page.h>
40#include <asm/setup.h>
41
42#include "board-mx31lite.h"
43#include "common.h"
44#include "devices-imx31.h"
45#include "ehci.h"
46#include "hardware.h"
47#include "iomux-mx3.h"
48#include "ulpi.h"
49
50/*
51 * This file contains the module-specific initialization routines.
52 */
53
54static unsigned int mx31lite_pins[] = {
55	/* LAN9117 IRQ pin */
56	IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
57	/* SPI 1 */
58	MX31_PIN_CSPI2_SCLK__SCLK,
59	MX31_PIN_CSPI2_MOSI__MOSI,
60	MX31_PIN_CSPI2_MISO__MISO,
61	MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
62	MX31_PIN_CSPI2_SS0__SS0,
63	MX31_PIN_CSPI2_SS1__SS1,
64	MX31_PIN_CSPI2_SS2__SS2,
65};
66
67static const struct mxc_nand_platform_data
68mx31lite_nand_board_info __initconst  = {
69	.width = 1,
70	.hw_ecc = 1,
71};
72
73static struct smsc911x_platform_config smsc911x_config = {
74	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
75	.irq_type	= SMSC911X_IRQ_TYPE_PUSH_PULL,
76	.flags		= SMSC911X_USE_16BIT,
77};
78
79static struct resource smsc911x_resources[] = {
80	{
81		.start		= MX31_CS4_BASE_ADDR,
82		.end		= MX31_CS4_BASE_ADDR + 0x100,
83		.flags		= IORESOURCE_MEM,
84	}, {
85		/* irq number is run-time assigned */
86		.flags		= IORESOURCE_IRQ,
87	},
88};
89
90static struct platform_device smsc911x_device = {
91	.name		= "smsc911x",
92	.id		= -1,
93	.num_resources	= ARRAY_SIZE(smsc911x_resources),
94	.resource	= smsc911x_resources,
95	.dev		= {
96		.platform_data = &smsc911x_config,
97	},
98};
99
100/*
101 * SPI
102 *
103 * The MC13783 is the only hard-wired SPI device on the module.
104 */
105
106static int spi_internal_chipselect[] = {
107	MXC_SPI_CS(0),
108};
109
110static const struct spi_imx_master spi1_pdata __initconst = {
111	.chipselect	= spi_internal_chipselect,
112	.num_chipselect	= ARRAY_SIZE(spi_internal_chipselect),
113};
114
115static struct mc13xxx_platform_data mc13783_pdata __initdata = {
116	.flags = MC13XXX_USE_RTC,
117};
118
119static struct spi_board_info mc13783_spi_dev __initdata = {
120	.modalias       = "mc13783",
121	.max_speed_hz   = 1000000,
122	.bus_num	= 1,
123	.chip_select    = 0,
124	.platform_data  = &mc13783_pdata,
125	/* irq number is run-time assigned */
126};
127
128/*
129 * USB
130 */
131
132#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
133			PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
134
135static int usbh2_init(struct platform_device *pdev)
136{
137	int pins[] = {
138		MX31_PIN_USBH2_DATA0__USBH2_DATA0,
139		MX31_PIN_USBH2_DATA1__USBH2_DATA1,
140		MX31_PIN_USBH2_CLK__USBH2_CLK,
141		MX31_PIN_USBH2_DIR__USBH2_DIR,
142		MX31_PIN_USBH2_NXT__USBH2_NXT,
143		MX31_PIN_USBH2_STP__USBH2_STP,
144	};
145
146	mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
147
148	mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
149	mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
150	mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
151	mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
152	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
153	mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
154	mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
155	mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
156	mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
157	mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
158	mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
159	mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
160
161	mxc_iomux_set_gpr(MUX_PGP_UH2, true);
162
163	/* chip select */
164	mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
165				"USBH2_CS");
166	gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
167	gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
168
169	mdelay(10);
170
171	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
172}
173
174static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
175	.init   = usbh2_init,
176	.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
177};
178
179/*
180 * NOR flash
181 */
182
183static struct physmap_flash_data nor_flash_data = {
184	.width  = 2,
185};
186
187static struct resource nor_flash_resource = {
188	.start  = 0xa0000000,
189	.end    = 0xa1ffffff,
190	.flags  = IORESOURCE_MEM,
191};
192
193static struct platform_device physmap_flash_device = {
194	.name   = "physmap-flash",
195	.id     = 0,
196	.dev    = {
197		.platform_data  = &nor_flash_data,
198	},
199	.resource = &nor_flash_resource,
200	.num_resources = 1,
201};
202
203
204
205/*
206 * This structure defines the MX31 memory map.
207 */
208static struct map_desc mx31lite_io_desc[] __initdata = {
209	{
210		.virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
211		.pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
212		.length = MX31_CS4_SIZE,
213		.type = MT_DEVICE
214	}
215};
216
217/*
218 * Set up static virtual mappings.
219 */
220void __init mx31lite_map_io(void)
221{
222	mx31_map_io();
223	iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
224}
225
226static int mx31lite_baseboard;
227core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
228
229static struct regulator_consumer_supply dummy_supplies[] = {
230	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
231	REGULATOR_SUPPLY("vddvario", "smsc911x"),
232};
233
234static void __init mx31lite_init(void)
235{
236	int ret;
237
238	imx31_soc_init();
239
240	switch (mx31lite_baseboard) {
241	case MX31LITE_NOBOARD:
242		break;
243	case MX31LITE_DB:
244		mx31lite_db_init();
245		break;
246	default:
247		printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
248				mx31lite_baseboard);
249	}
250
251	mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
252				      "mx31lite");
253
254	/* NOR and NAND flash */
255	platform_device_register(&physmap_flash_device);
256	imx31_add_mxc_nand(&mx31lite_nand_board_info);
257
258	imx31_add_spi_imx1(&spi1_pdata);
259	mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
260	spi_register_board_info(&mc13783_spi_dev, 1);
261
262	/* USB */
263	usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
264			ULPI_OTG_DRVVBUS_EXT);
265	if (usbh2_pdata.otg)
266		imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
267
268	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
269
270	/* SMSC9117 IRQ pin */
271	ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
272	if (ret)
273		pr_warn("could not get LAN irq gpio\n");
274	else {
275		gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
276		smsc911x_resources[1].start =
277			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
278		smsc911x_resources[1].end =
279			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
280		platform_device_register(&smsc911x_device);
281	}
282}
283
284static void __init mx31lite_timer_init(void)
285{
286	mx31_clocks_init(26000000);
287}
288
289MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
290	/* Maintainer: Freescale Semiconductor, Inc. */
291	.atag_offset = 0x100,
292	.map_io = mx31lite_map_io,
293	.init_early = imx31_init_early,
294	.init_irq = mx31_init_irq,
295	.init_time	= mx31lite_timer_init,
296	.init_machine = mx31lite_init,
297	.restart	= mxc_restart,
298MACHINE_END
299