aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-mx3/mach-kzm_arm11_01.c
blob: df1a6ce8e3e1b7cb66f49f31f497e52153f2b42e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
/*
 * KZM-ARM11-01 support
 *  Copyright (C) 2009  Yoichi Yuasa <yuasa@linux-mips.org>
 *
 * based on code for MX31ADS,
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/smsc911x.h>
#include <linux/types.h>

#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/memory.h>
#include <asm/setup.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>

#include <mach/clock.h>
#include <mach/common.h>
#include <mach/iomux-mx3.h>

#include "devices-imx31.h"
#include "devices.h"

#define KZM_ARM11_IO_ADDRESS(x) (IOMEM(					\
	IMX_IO_P2V_MODULE(x, MX31_CS4) ?:				\
	IMX_IO_P2V_MODULE(x, MX31_CS5)) ?:				\
	MX31_IO_ADDRESS(x))

/*
 *  KZM-ARM11-01 Board Control Registers on FPGA
 */
#define KZM_ARM11_CTL1		(MX31_CS4_BASE_ADDR + 0x1000)
#define KZM_ARM11_CTL2		(MX31_CS4_BASE_ADDR + 0x1001)
#define KZM_ARM11_RSW1		(MX31_CS4_BASE_ADDR + 0x1002)
#define KZM_ARM11_BACK_LIGHT	(MX31_CS4_BASE_ADDR + 0x1004)
#define KZM_ARM11_FPGA_REV	(MX31_CS4_BASE_ADDR + 0x1008)
#define KZM_ARM11_7SEG_LED	(MX31_CS4_BASE_ADDR + 0x1010)
#define KZM_ARM11_LEDS		(MX31_CS4_BASE_ADDR + 0x1020)
#define KZM_ARM11_DIPSW2	(MX31_CS4_BASE_ADDR + 0x1003)

/*
 * External UART for touch panel on FPGA
 */
#define KZM_ARM11_16550		(MX31_CS4_BASE_ADDR + 0x1050)

#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
/*
 * KZM-ARM11-01 has an external UART on FPGA
 */
static struct plat_serial8250_port serial_platform_data[] = {
	{
		.membase	= KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
		.mapbase	= KZM_ARM11_16550,
		.irq		= IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
		.irqflags	= IRQ_TYPE_EDGE_RISING,
		.uartclk	= 14745600,
		.regshift	= 0,
		.iotype		= UPIO_MEM,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
				  UPF_BUGGY_UART,
	},
	{},
};

static struct resource serial8250_resources[] = {
	{
		.start	= KZM_ARM11_16550,
		.end	= KZM_ARM11_16550 + 0x10,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
		.end	= IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device serial_device = {
	.name		= "serial8250",
	.id		= PLAT8250_DEV_PLATFORM,
	.dev		= {
				.platform_data = serial_platform_data,
			  },
	.num_resources	= ARRAY_SIZE(serial8250_resources),
	.resource	= serial8250_resources,
};

static int __init kzm_init_ext_uart(void)
{
	u8 tmp;

	/*
	 * GPIO 1-1: external UART interrupt line
	 */
	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
	gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
	gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));

	/*
	 * Unmask UART interrupt
	 */
	tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
	tmp |= 0x2;
	__raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));

	return platform_device_register(&serial_device);
}
#else
static inline int kzm_init_ext_uart(void)
{
	return 0;
}
#endif

/*
 * SMSC LAN9118
 */
#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
static struct smsc911x_platform_config kzm_smsc9118_config = {
	.phy_interface	= PHY_INTERFACE_MODE_MII,
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
	.irq_type	= SMSC911X_IRQ_TYPE_PUSH_PULL,
	.flags		= SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
};

static struct resource kzm_smsc9118_resources[] = {
	{
		.start	= MX31_CS5_BASE_ADDR,
		.end	= MX31_CS5_BASE_ADDR + SZ_128K - 1,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
		.end	= IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
	},
};

static struct platform_device kzm_smsc9118_device = {
	.name		= "smsc911x",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(kzm_smsc9118_resources),
	.resource	= kzm_smsc9118_resources,
	.dev		= {
				.platform_data = &kzm_smsc9118_config,
			  },
};

static int __init kzm_init_smsc9118(void)
{
	/*
	 * GPIO 1-2: SMSC9118 interrupt line
	 */
	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
	gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
	gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));

	return platform_device_register(&kzm_smsc9118_device);
}
#else
static inline int kzm_init_smsc9118(void)
{
	return 0;
}
#endif

#if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
static const struct imxuart_platform_data uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
};

static void __init kzm_init_imx_uart(void)
{
	imx31_add_imx_uart0(&uart_pdata);
	imx31_add_imx_uart1(&uart_pdata);
}
#else
static inline void kzm_init_imx_uart(void)
{
}
#endif

static int kzm_pins[] __initdata = {
	MX31_PIN_CTS1__CTS1,
	MX31_PIN_RTS1__RTS1,
	MX31_PIN_TXD1__TXD1,
	MX31_PIN_RXD1__RXD1,
	MX31_PIN_DCD_DCE1__DCD_DCE1,
	MX31_PIN_RI_DCE1__RI_DCE1,
	MX31_PIN_DSR_DCE1__DSR_DCE1,
	MX31_PIN_DTR_DCE1__DTR_DCE1,
	MX31_PIN_CTS2__CTS2,
	MX31_PIN_RTS2__RTS2,
	MX31_PIN_TXD2__TXD2,
	MX31_PIN_RXD2__RXD2,
	MX31_PIN_DCD_DTE1__DCD_DTE2,
	MX31_PIN_RI_DTE1__RI_DTE2,
	MX31_PIN_DSR_DTE1__DSR_DTE2,
	MX31_PIN_DTR_DTE1__DTR_DTE2,
};

/*
 * Board specific initialization.
 */
static void __init kzm_board_init(void)
{
	mxc_iomux_setup_multiple_pins(kzm_pins,
				      ARRAY_SIZE(kzm_pins), "kzm");
	kzm_init_ext_uart();
	kzm_init_smsc9118();
	kzm_init_imx_uart();

	pr_info("Clock input source is 26MHz\n");
}

/*
 * This structure defines static mappings for the kzm-arm11-01 board.
 */
static struct map_desc kzm_io_desc[] __initdata = {
	{
		.virtual	= MX31_CS4_BASE_ADDR_VIRT,
		.pfn		= __phys_to_pfn(MX31_CS4_BASE_ADDR),
		.length		= MX31_CS4_SIZE,
		.type		= MT_DEVICE
	},
	{
		.virtual	= MX31_CS5_BASE_ADDR_VIRT,
		.pfn		= __phys_to_pfn(MX31_CS5_BASE_ADDR),
		.length		= MX31_CS5_SIZE,
		.type		= MT_DEVICE
	},
};

/*
 * Set up static virtual mappings.
 */
static void __init kzm_map_io(void)
{
	mx31_map_io();
	iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
}

static void __init kzm_timer_init(void)
{
	mx31_clocks_init(26000000);
}

static struct sys_timer kzm_timer = {
	.init   = kzm_timer_init,
};

/*
 * The following uses standard kernel macros define in arch.h in order to
 * initialize __mach_desc_KZM_ARM11_01 data structure.
 */
MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
	.boot_params    = MX3x_PHYS_OFFSET + 0x100,
	.map_io         = kzm_map_io,
	.init_irq       = mx31_init_irq,
	.init_machine   = kzm_board_init,
	.timer          = &kzm_timer,
MACHINE_END