Merge commit 'v2.6.39' into 20110526
[linux-2.6.git] / arch / arm / mach-mx3 / mach-kzm_arm11_01.c
1 /*
2  * KZM-ARM11-01 support
3  *  Copyright (C) 2009  Yoichi Yuasa <yuasa@linux-mips.org>
4  *
5  * based on code for MX31ADS,
6  *  Copyright (C) 2000 Deep Blue Solutions Ltd
7  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
8  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  */
20
21 #include <linux/gpio.h>
22 #include <linux/init.h>
23 #include <linux/platform_device.h>
24 #include <linux/serial_8250.h>
25 #include <linux/smsc911x.h>
26 #include <linux/types.h>
27
28 #include <asm/irq.h>
29 #include <asm/mach-types.h>
30 #include <asm/memory.h>
31 #include <asm/setup.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/irq.h>
34 #include <asm/mach/map.h>
35 #include <asm/mach/time.h>
36
37 #include <mach/clock.h>
38 #include <mach/common.h>
39 #include <mach/iomux-mx3.h>
40
41 #include "devices-imx31.h"
42 #include "devices.h"
43
44 #define KZM_ARM11_IO_ADDRESS(x) (IOMEM(                                 \
45         IMX_IO_P2V_MODULE(x, MX31_CS4) ?:                               \
46         IMX_IO_P2V_MODULE(x, MX31_CS5)) ?:                              \
47         MX31_IO_ADDRESS(x))
48
49 /*
50  *  KZM-ARM11-01 Board Control Registers on FPGA
51  */
52 #define KZM_ARM11_CTL1          (MX31_CS4_BASE_ADDR + 0x1000)
53 #define KZM_ARM11_CTL2          (MX31_CS4_BASE_ADDR + 0x1001)
54 #define KZM_ARM11_RSW1          (MX31_CS4_BASE_ADDR + 0x1002)
55 #define KZM_ARM11_BACK_LIGHT    (MX31_CS4_BASE_ADDR + 0x1004)
56 #define KZM_ARM11_FPGA_REV      (MX31_CS4_BASE_ADDR + 0x1008)
57 #define KZM_ARM11_7SEG_LED      (MX31_CS4_BASE_ADDR + 0x1010)
58 #define KZM_ARM11_LEDS          (MX31_CS4_BASE_ADDR + 0x1020)
59 #define KZM_ARM11_DIPSW2        (MX31_CS4_BASE_ADDR + 0x1003)
60
61 /*
62  * External UART for touch panel on FPGA
63  */
64 #define KZM_ARM11_16550         (MX31_CS4_BASE_ADDR + 0x1050)
65
66 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
67 /*
68  * KZM-ARM11-01 has an external UART on FPGA
69  */
70 static struct plat_serial8250_port serial_platform_data[] = {
71         {
72                 .membase        = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
73                 .mapbase        = KZM_ARM11_16550,
74                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
75                 .irqflags       = IRQ_TYPE_EDGE_RISING,
76                 .uartclk        = 14745600,
77                 .regshift       = 0,
78                 .iotype         = UPIO_MEM,
79                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
80                                   UPF_BUGGY_UART,
81         },
82         {},
83 };
84
85 static struct resource serial8250_resources[] = {
86         {
87                 .start  = KZM_ARM11_16550,
88                 .end    = KZM_ARM11_16550 + 0x10,
89                 .flags  = IORESOURCE_MEM,
90         },
91         {
92                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
93                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
94                 .flags  = IORESOURCE_IRQ,
95         },
96 };
97
98 static struct platform_device serial_device = {
99         .name           = "serial8250",
100         .id             = PLAT8250_DEV_PLATFORM,
101         .dev            = {
102                                 .platform_data = serial_platform_data,
103                           },
104         .num_resources  = ARRAY_SIZE(serial8250_resources),
105         .resource       = serial8250_resources,
106 };
107
108 static int __init kzm_init_ext_uart(void)
109 {
110         u8 tmp;
111
112         /*
113          * GPIO 1-1: external UART interrupt line
114          */
115         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
116         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
117         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
118
119         /*
120          * Unmask UART interrupt
121          */
122         tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
123         tmp |= 0x2;
124         __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
125
126         return platform_device_register(&serial_device);
127 }
128 #else
129 static inline int kzm_init_ext_uart(void)
130 {
131         return 0;
132 }
133 #endif
134
135 /*
136  * SMSC LAN9118
137  */
138 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
139 static struct smsc911x_platform_config kzm_smsc9118_config = {
140         .phy_interface  = PHY_INTERFACE_MODE_MII,
141         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
142         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
143         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
144 };
145
146 static struct resource kzm_smsc9118_resources[] = {
147         {
148                 .start  = MX31_CS5_BASE_ADDR,
149                 .end    = MX31_CS5_BASE_ADDR + SZ_128K - 1,
150                 .flags  = IORESOURCE_MEM,
151         },
152         {
153                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
154                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
155                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
156         },
157 };
158
159 static struct platform_device kzm_smsc9118_device = {
160         .name           = "smsc911x",
161         .id             = -1,
162         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
163         .resource       = kzm_smsc9118_resources,
164         .dev            = {
165                                 .platform_data = &kzm_smsc9118_config,
166                           },
167 };
168
169 static int __init kzm_init_smsc9118(void)
170 {
171         /*
172          * GPIO 1-2: SMSC9118 interrupt line
173          */
174         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
175         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
176         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
177
178         return platform_device_register(&kzm_smsc9118_device);
179 }
180 #else
181 static inline int kzm_init_smsc9118(void)
182 {
183         return 0;
184 }
185 #endif
186
187 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
188 static const struct imxuart_platform_data uart_pdata __initconst = {
189         .flags = IMXUART_HAVE_RTSCTS,
190 };
191
192 static void __init kzm_init_imx_uart(void)
193 {
194         imx31_add_imx_uart0(&uart_pdata);
195         imx31_add_imx_uart1(&uart_pdata);
196 }
197 #else
198 static inline void kzm_init_imx_uart(void)
199 {
200 }
201 #endif
202
203 static int kzm_pins[] __initdata = {
204         MX31_PIN_CTS1__CTS1,
205         MX31_PIN_RTS1__RTS1,
206         MX31_PIN_TXD1__TXD1,
207         MX31_PIN_RXD1__RXD1,
208         MX31_PIN_DCD_DCE1__DCD_DCE1,
209         MX31_PIN_RI_DCE1__RI_DCE1,
210         MX31_PIN_DSR_DCE1__DSR_DCE1,
211         MX31_PIN_DTR_DCE1__DTR_DCE1,
212         MX31_PIN_CTS2__CTS2,
213         MX31_PIN_RTS2__RTS2,
214         MX31_PIN_TXD2__TXD2,
215         MX31_PIN_RXD2__RXD2,
216         MX31_PIN_DCD_DTE1__DCD_DTE2,
217         MX31_PIN_RI_DTE1__RI_DTE2,
218         MX31_PIN_DSR_DTE1__DSR_DTE2,
219         MX31_PIN_DTR_DTE1__DTR_DTE2,
220 };
221
222 /*
223  * Board specific initialization.
224  */
225 static void __init kzm_board_init(void)
226 {
227         mxc_iomux_setup_multiple_pins(kzm_pins,
228                                       ARRAY_SIZE(kzm_pins), "kzm");
229         kzm_init_ext_uart();
230         kzm_init_smsc9118();
231         kzm_init_imx_uart();
232
233         pr_info("Clock input source is 26MHz\n");
234 }
235
236 /*
237  * This structure defines static mappings for the kzm-arm11-01 board.
238  */
239 static struct map_desc kzm_io_desc[] __initdata = {
240         {
241                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
242                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
243                 .length         = MX31_CS4_SIZE,
244                 .type           = MT_DEVICE
245         },
246         {
247                 .virtual        = MX31_CS5_BASE_ADDR_VIRT,
248                 .pfn            = __phys_to_pfn(MX31_CS5_BASE_ADDR),
249                 .length         = MX31_CS5_SIZE,
250                 .type           = MT_DEVICE
251         },
252 };
253
254 /*
255  * Set up static virtual mappings.
256  */
257 static void __init kzm_map_io(void)
258 {
259         mx31_map_io();
260         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
261 }
262
263 static void __init kzm_timer_init(void)
264 {
265         mx31_clocks_init(26000000);
266 }
267
268 static struct sys_timer kzm_timer = {
269         .init = kzm_timer_init,
270 };
271
272 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
273         .boot_params = MX3x_PHYS_OFFSET + 0x100,
274         .map_io = kzm_map_io,
275         .init_early = imx31_init_early,
276         .init_irq = mx31_init_irq,
277         .timer = &kzm_timer,
278         .init_machine = kzm_board_init,
279 MACHINE_END