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board.h
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1 /*
2  * arch/arm/mach-at91/include/mach/board.h
3  *
4  * Copyright (C) 2005 HP Labs
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  */
20 
21 /*
22  * These are data structures found in platform_device.dev.platform_data,
23  * and describing board-specific data needed by drivers. For example,
24  * which pin is used for a given GPIO role.
25  *
26  * In 2.6, drivers should strongly avoid board-specific knowledge so
27  * that supporting new boards normally won't require driver patches.
28  * Most board-specific knowledge should be in arch/.../board-*.c files.
29  */
30 
31 #ifndef __ASM_ARCH_BOARD_H
32 #define __ASM_ARCH_BOARD_H
33 
34 #include <linux/mtd/partitions.h>
35 #include <linux/device.h>
36 #include <linux/i2c.h>
37 #include <linux/leds.h>
38 #include <linux/spi/spi.h>
40 #include <linux/atmel-mci.h>
41 #include <sound/atmel-ac97c.h>
42 #include <linux/serial.h>
45 
46  /* USB Device */
47 struct at91_udc_data {
48  int vbus_pin; /* high == host powering us */
49  u8 vbus_active_low; /* vbus polarity */
50  u8 vbus_polled; /* Use polling, not interrupt */
51  int pullup_pin; /* active == D+ pulled up */
52  u8 pullup_active_low; /* true == pullup_pin is active low */
53 };
54 extern void __init at91_add_device_udc(struct at91_udc_data *data);
55 
56  /* USB High Speed Device */
58 
59  /* Compact Flash */
60 struct at91_cf_data {
61  int irq_pin; /* I/O IRQ */
62  int det_pin; /* Card detect */
63  int vcc_pin; /* power switching */
64  int rst_pin; /* card reset */
65  u8 chipselect; /* EBI Chip Select number */
67 #define AT91_CF_TRUE_IDE 0x01
68 #define AT91_IDE_SWAP_A0_A2 0x02
69 };
70 extern void __init at91_add_device_cf(struct at91_cf_data *data);
71 
72  /* MMC / SD */
73  /* at91_mci platform config */
74 struct at91_mmc_data {
75  int det_pin; /* card detect IRQ */
76  unsigned slot_b:1; /* uses Slot B */
77  unsigned wire4:1; /* (SD) supports DAT0..DAT3 */
78  int wp_pin; /* (SD) writeprotect detect */
79  int vcc_pin; /* power switching (high == on) */
80 };
81 extern void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data);
82 
83  /* atmel-mci platform config */
84 extern void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data);
85 
87 
88  /* USB Host */
89 #define AT91_MAX_USBH_PORTS 3
91  int vbus_pin[AT91_MAX_USBH_PORTS]; /* port power-control pin */
93  u8 ports; /* number of ports on root hub */
98 };
99 extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
102 
103 extern void __init at91_add_device_nand(struct atmel_nand_data *data);
104 
105  /* I2C*/
106 #if defined(CONFIG_ARCH_AT91SAM9G45)
107 extern void __init at91_add_device_i2c(short i2c_id, struct i2c_board_info *devices, int nr_devices);
108 #else
109 extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices);
110 #endif
111 
112  /* SPI */
113 extern void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices);
114 
115  /* Serial */
116 #define ATMEL_UART_CTS 0x01
117 #define ATMEL_UART_RTS 0x02
118 #define ATMEL_UART_DSR 0x04
119 #define ATMEL_UART_DTR 0x08
120 #define ATMEL_UART_DCD 0x10
121 #define ATMEL_UART_RI 0x20
122 
123 extern void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins);
124 
126 
128  int num; /* port num */
129  short use_dma_tx; /* use transmit DMA? */
130  short use_dma_rx; /* use receive DMA? */
131  void __iomem *regs; /* virt. base address, if any */
132  struct serial_rs485 rs485; /* rs485 settings */
133 };
134 extern void __init at91_add_device_serial(void);
135 
136 /*
137  * PWM
138  */
139 #define AT91_PWM0 0
140 #define AT91_PWM1 1
141 #define AT91_PWM2 2
142 #define AT91_PWM3 3
143 
144 extern void __init at91_add_device_pwm(u32 mask);
145 
146 /*
147  * SSC -- accessed through ssc_request(id). Drivers don't bind to SSC
148  * platform devices. Their SSC ID is part of their configuration data,
149  * along with information about which SSC signals they should use.
150  */
151 #define ATMEL_SSC_TK 0x01
152 #define ATMEL_SSC_TF 0x02
153 #define ATMEL_SSC_TD 0x04
154 #define ATMEL_SSC_TX (ATMEL_SSC_TK | ATMEL_SSC_TF | ATMEL_SSC_TD)
155 
156 #define ATMEL_SSC_RK 0x10
157 #define ATMEL_SSC_RF 0x20
158 #define ATMEL_SSC_RD 0x40
159 #define ATMEL_SSC_RX (ATMEL_SSC_RK | ATMEL_SSC_RF | ATMEL_SSC_RD)
160 
161 extern void __init at91_add_device_ssc(unsigned id, unsigned pins);
162 
163  /* LCD Controller */
164 struct atmel_lcdfb_info;
165 extern void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data);
166 
167  /* AC97 */
169 
170  /* ISI */
171 struct isi_platform_data;
173  bool use_pck_as_mck);
174 
175  /* Touchscreen Controller */
177  unsigned int adc_clock;
180 };
182 
183 /* CAN */
186 };
187 extern void __init at91_add_device_can(struct at91_can_data *data);
188 
189  /* LEDs */
190 extern void __init at91_gpio_leds(struct gpio_led *leds, int nr);
191 extern void __init at91_pwm_leds(struct gpio_led *leds, int nr);
192 
193 /* FIXME: this needs a better location, but gets stuff building again */
194 extern int at91_suspend_entering_slow_clock(void);
195 
196 #endif