Extra omap code in linux-omap tree

[linux-2.6-omap-h63xx.git] / arch / arm / mach-omap2 / board-n800-dsp.c

diff --git a/arch/arm/mach-omap2/board-n800-dsp.c b/arch/arm/mach-omap2/board-n800-dsp.c
new file mode 100644 (file)
index 0000000..5f3f0d6
--- /dev/null
+++ b/arch/arm/mach-omap2/board-n800-dsp.c
@@ -0,0 +1,155 @@
+/*
+ * linux/arch/arm/mach-omap2/board-n800-dsp.c
+ *
+ * Copyright (C) 2006 Nokia Corporation.
+ *
+ * Contact: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+
+#include <asm/io.h>
+#include <mach/clock.h>
+#include <mach/board.h>
+#include <mach/dsp_common.h>
+
+#if    defined(CONFIG_OMAP_DSP)
+
+/*
+ * dsp peripheral device: AUDIO
+ */
+static struct dsp_kfunc_device n800_audio_device = {
+       .name    = "audio",
+       .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
+       .enable  = n800_audio_enable,
+       .disable = n800_audio_disable,
+};
+
+/*
+ * dsp peripheral device: TIMER
+ */
+static int dsp_timer_probe(struct dsp_kfunc_device *kdev, int stage)
+{
+       char clockname[20];
+
+       strcpy(clockname, kdev->name);
+       strcat(clockname, "_fck");
+
+       kdev->fck = clk_get(NULL, clockname);
+       if (IS_ERR(kdev->fck)) {
+               printk(KERN_ERR "couldn't acquire %s\n", clockname);
+               return PTR_ERR(kdev->fck);
+       }
+       pr_debug("%s probed successfully\n", clockname);
+
+       strcpy(clockname, kdev->name);
+       strcat(clockname, "_ick");
+       kdev->ick = clk_get(NULL, clockname);
+       if (IS_ERR(kdev->ick)) {
+               printk(KERN_ERR "couldn't acquire %s\n", clockname);
+               goto fail;
+       }
+       pr_debug("%s probed successfully\n", clockname);
+
+       return 0;
+ fail:
+       clk_put(kdev->fck);
+
+       return PTR_ERR(kdev->ick);
+}
+
+static int dsp_timer_remove(struct dsp_kfunc_device *kdev, int stage)
+{
+       clk_put(kdev->ick);
+       clk_put(kdev->fck);
+       pr_debug("%s removed successfully\n", kdev->name);
+       return 0;
+}
+
+static int dsp_timer_enable(struct dsp_kfunc_device *kdev, int stage)
+{
+       pr_debug("%s enabled(%d)\n", kdev->name, stage);
+
+       spin_lock(&kdev->lock);
+
+       if (kdev->enabled)
+               goto out;
+       kdev->enabled = 1;
+
+       clk_enable(kdev->fck);
+       clk_enable(kdev->ick);
+ out:
+       spin_unlock(&kdev->lock);
+
+       return 0;
+}
+
+static int dsp_timer_disable(struct dsp_kfunc_device *kdev, int stage)
+{
+       pr_debug("%s disabled(%d)\n", kdev->name, stage);
+
+       spin_lock(&kdev->lock);
+
+       if (kdev->enabled == 0)
+               goto out;
+       kdev->enabled = 0;
+
+       clk_disable(kdev->ick);
+       clk_disable(kdev->fck);
+ out:
+       spin_unlock(&kdev->lock);
+
+       return 0;
+}
+
+static struct dsp_kfunc_device n800_timer_device = {
+       .name    = "gpt5",
+       .type    = DSP_KFUNC_DEV_TYPE_COMMON,
+       .probe   = dsp_timer_probe,
+       .remove  = dsp_timer_remove,
+       .enable  = dsp_timer_enable,
+       .disable = dsp_timer_disable,
+};
+
+static struct dsp_kfunc_device *n800_kfunc_dev[] = {
+       &n800_audio_device,
+       &n800_timer_device,
+};
+
+void __init n800_dsp_init(void)
+{
+       int i, ret;
+       struct dsp_kfunc_device **p = n800_kfunc_dev;
+
+       for (i = 0; i < ARRAY_SIZE(n800_kfunc_dev); i++) {
+               ret = dsp_kfunc_device_register(p[i]);
+               if (ret) {
+                       printk(KERN_ERR
+                              "KFUNC device registration failed: %s\n",
+                              p[i]->name);
+               }
+       }
+}
+
+#else
+void __init n800_dsp_init(void) { }
+#endif /* CONFIG_OMAP_DSP */