2 * linux/arch/arm/mach-omap2/board-n800-dsp.c
4 * Copyright (C) 2006 Nokia Corporation.
6 * Contact: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 #include <linux/kernel.h>
25 #include <linux/device.h>
26 #include <linux/list.h>
27 #include <linux/err.h>
28 #include <linux/clk.h>
31 #include <asm/arch/clock.h>
32 #include <asm/arch/board.h>
33 #include <asm/arch/dsp_common.h>
35 #if defined(CONFIG_OMAP_DSP)
38 * dsp peripheral device: AUDIO
40 static struct dsp_kfunc_device n800_audio_device = {
42 .type = DSP_KFUNC_DEV_TYPE_AUDIO,
43 .enable = n800_audio_enable,
44 .disable = n800_audio_disable,
48 * dsp peripheral device: TIMER
50 static int dsp_timer_probe(struct dsp_kfunc_device *kdev, int stage)
54 strcpy(clockname, kdev->name);
55 strcat(clockname, "_fck");
57 kdev->fck = clk_get(NULL, clockname);
58 if (IS_ERR(kdev->fck)) {
59 printk(KERN_ERR "couldn't acquire %s\n", clockname);
60 return PTR_ERR(kdev->fck);
62 pr_debug("%s probed successfully\n", clockname);
64 strcpy(clockname, kdev->name);
65 strcat(clockname, "_ick");
66 kdev->ick = clk_get(NULL, clockname);
67 if (IS_ERR(kdev->ick)) {
68 printk(KERN_ERR "couldn't acquire %s\n", clockname);
71 pr_debug("%s probed successfully\n", clockname);
77 return PTR_ERR(kdev->ick);
80 static int dsp_timer_remove(struct dsp_kfunc_device *kdev, int stage)
84 pr_debug("%s removed successfully\n", kdev->name);
88 static int dsp_timer_enable(struct dsp_kfunc_device *kdev, int stage)
90 pr_debug("%s enabled(%d)\n", kdev->name, stage);
92 spin_lock(&kdev->lock);
98 clk_enable(kdev->fck);
99 clk_enable(kdev->ick);
101 spin_unlock(&kdev->lock);
106 static int dsp_timer_disable(struct dsp_kfunc_device *kdev, int stage)
108 pr_debug("%s disabled(%d)\n", kdev->name, stage);
110 spin_lock(&kdev->lock);
112 if (kdev->enabled == 0)
116 clk_disable(kdev->ick);
117 clk_disable(kdev->fck);
119 spin_unlock(&kdev->lock);
124 static struct dsp_kfunc_device n800_timer_device = {
126 .type = DSP_KFUNC_DEV_TYPE_COMMON,
127 .probe = dsp_timer_probe,
128 .remove = dsp_timer_remove,
129 .enable = dsp_timer_enable,
130 .disable = dsp_timer_disable,
133 static struct dsp_kfunc_device *n800_kfunc_dev[] = {
138 void __init n800_dsp_init(void)
141 struct dsp_kfunc_device **p = n800_kfunc_dev;
143 for (i = 0; i < ARRAY_SIZE(n800_kfunc_dev); i++) {
144 ret = dsp_kfunc_device_register(p[i]);
147 "KFUNC device registration failed: %s\n",
154 void __init n800_dsp_init(void) { }
155 #endif /* CONFIG_OMAP_DSP */