2 * Helper module for board specific I2C bus registration
4 * Copyright (C) 2009 Nokia Corporation.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 #include <linux/i2c-omap.h>
26 #include "../plat-omap/i2c.h"
28 #define OMAP_I2C_SIZE 0x3f
29 #define OMAP1_I2C_BASE 0xfffb3800
30 #define OMAP1_INT_I2C (32 + 4)
32 static const char name
[] = "omap_i2c";
34 static struct resource i2c_resources
[2] = {
37 static struct platform_device omap_i2c_devices
[1] = {
40 static void __init
omap1_i2c_mux_pins(int bus_id
)
42 if (cpu_is_omap7xx()) {
43 omap_cfg_reg(I2C_7XX_SDA
);
44 omap_cfg_reg(I2C_7XX_SCL
);
46 omap_cfg_reg(I2C_SDA
);
47 omap_cfg_reg(I2C_SCL
);
51 int __init
omap_i2c_add_bus(struct omap_i2c_bus_platform_data
*pdata
,
54 struct platform_device
*pdev
;
57 omap1_i2c_mux_pins(bus_id
);
59 pdev
= &omap_i2c_devices
[bus_id
- 1];
62 pdev
->num_resources
= ARRAY_SIZE(i2c_resources
);
64 res
[0].start
= OMAP1_I2C_BASE
;
65 res
[0].end
= res
[0].start
+ OMAP_I2C_SIZE
;
66 res
[0].flags
= IORESOURCE_MEM
;
67 res
[1].start
= OMAP1_INT_I2C
;
68 res
[1].flags
= IORESOURCE_IRQ
;
71 /* all OMAP1 have IP version 1 register set */
72 pdata
->rev
= OMAP_I2C_IP_VERSION_1
;
74 /* all OMAP1 I2C are implemented like this */
75 pdata
->flags
= OMAP_I2C_FLAG_NO_FIFO
|
76 OMAP_I2C_FLAG_SIMPLE_CLOCK
|
77 OMAP_I2C_FLAG_16BIT_DATA_REG
|
78 OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK
;
80 /* how the cpu bus is wired up differs for 7xx only */
83 pdata
->flags
|= OMAP_I2C_FLAG_BUS_SHIFT_1
;
85 pdata
->flags
|= OMAP_I2C_FLAG_BUS_SHIFT_2
;
87 pdev
->dev
.platform_data
= pdata
;
89 return platform_device_register(pdev
);