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>
33 #include "../plat-omap/dsp/dsp_common.h"
35 extern int n800_audio_enable(struct dsp_kfunc_device *kdev, int stage);
36 extern int n800_audio_disable(struct dsp_kfunc_device *kdev, int stage);
38 #if defined(CONFIG_OMAP_DSP)
41 * dsp peripheral device: AUDIO
43 static struct dsp_kfunc_device n800_audio_device = {
45 .type = DSP_KFUNC_DEV_TYPE_AUDIO,
46 .enable = n800_audio_enable,
47 .disable = n800_audio_disable,
51 * dsp peripheral device: TIMER
53 static int dsp_timer_probe(struct dsp_kfunc_device *kdev)
57 strcpy(clockname, kdev->name);
58 strcat(clockname, "_fck");
60 kdev->fck = clk_get(NULL, clockname);
61 if (IS_ERR(kdev->fck)) {
62 printk(KERN_ERR "couldn't acquire %s\n", clockname);
63 return PTR_ERR(kdev->fck);
65 pr_debug("%s probed successfully\n", clockname);
67 strcpy(clockname, kdev->name);
68 strcat(clockname, "_ick");
69 kdev->ick = clk_get(NULL, clockname);
70 if (IS_ERR(kdev->ick)) {
71 printk(KERN_ERR "couldn't acquire %s\n", clockname);
74 pr_debug("%s probed successfully\n", clockname);
80 return PTR_ERR(kdev->ick);
83 static int dsp_timer_remove(struct dsp_kfunc_device *kdev)
87 pr_debug("%s removed successfully\n", kdev->name);
91 static int dsp_timer_enable(struct dsp_kfunc_device *kdev, int stage)
93 pr_debug("%s enabled(%d)\n", kdev->name, stage);
95 mutex_lock(&kdev->lock);
101 clk_enable(kdev->fck);
102 clk_enable(kdev->ick);
104 mutex_unlock(&kdev->lock);
109 static int dsp_timer_disable(struct dsp_kfunc_device *kdev, int stage)
111 pr_debug("%s disabled(%d)\n", kdev->name, stage);
113 mutex_lock(&kdev->lock);
115 if (kdev->enabled == 0)
119 clk_disable(kdev->ick);
120 clk_disable(kdev->fck);
122 mutex_unlock(&kdev->lock);
127 static struct dsp_kfunc_device n800_timer_device = {
129 .type = DSP_KFUNC_DEV_TYPE_COMMON,
130 .probe = dsp_timer_probe,
131 .remove = dsp_timer_remove,
132 .enable = dsp_timer_enable,
133 .disable = dsp_timer_disable,
136 static struct dsp_kfunc_device *n800_kfunc_dev[] = {
141 void __init n800_dsp_init(void)
144 struct dsp_kfunc_device **p = n800_kfunc_dev;
146 for (i = 0; i < ARRAY_SIZE(n800_kfunc_dev); i++) {
147 ret = dsp_kfunc_device_register(p[i]);
150 "KFUNC device registration failed: %s\n",
157 void __init n800_dsp_init(void) { }
158 #endif /* CONFIG_OMAP_DSP */