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1 | /* |
2 | * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de> |
3 | * |
4 | * Initial development of this code was funded by |
5 | * Phytec Messtechnik GmbH, http://www.phytec.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/module.h> |
19 | #include <linux/err.h> |
20 | #include <linux/io.h> |
21 | #include <linux/clk.h> |
22 | #include <mach/audmux.h> |
23 | #include <mach/hardware.h> |
24 | |
25 | static void __iomem *audmux_base; |
26 | |
27 | static unsigned char port_mapping[] = { |
28 | 0x0, 0x4, 0x8, 0x10, 0x14, 0x1c, |
29 | }; |
30 | |
31 | int mxc_audmux_v1_configure_port(unsigned int port, unsigned int pcr) |
32 | { |
33 | if (!audmux_base) { |
34 | printk("%s: not configured\n", __func__); |
35 | return -ENOSYS; |
36 | } |
37 | |
38 | if (port >= ARRAY_SIZE(port_mapping)) |
39 | return -EINVAL; |
40 | |
41 | writel(pcr, audmux_base + port_mapping[port]); |
42 | |
43 | return 0; |
44 | } |
45 | EXPORT_SYMBOL_GPL(mxc_audmux_v1_configure_port); |
46 | |
47 | static int mxc_audmux_v1_init(void) |
48 | { |
49 | #ifdef CONFIG_MACH_MX21 |
50 | if (cpu_is_mx21()) |
51 | audmux_base = MX21_IO_ADDRESS(MX21_AUDMUX_BASE_ADDR); |
52 | else |
53 | #endif |
54 | #ifdef CONFIG_MACH_MX27 |
55 | if (cpu_is_mx27()) |
56 | audmux_base = MX27_IO_ADDRESS(MX27_AUDMUX_BASE_ADDR); |
57 | else |
58 | #endif |
59 | (void)0; |
60 | |
61 | return 0; |
62 | } |
63 | |
64 | postcore_initcall(mxc_audmux_v1_init); |
65 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
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v3.9