omap: add dsp platform device

Otherwise tidspbridge cannot work.

It looks like this was dropped in the conversion to staging. I took the
liberty of doing some cleaning up.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 89 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 88d3a1e920f5..58288a4771e1 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -102,6 +102,10 @@ obj-y					+= $(iommu-m) $(iommu-y)
 i2c-omap-$(CONFIG_I2C_OMAP)             := i2c.o
 obj-y                                   += $(i2c-omap-m) $(i2c-omap-y)
 
+ifneq ($(CONFIG_TIDSPBRIDGE),)
+obj-y                                   += dsp.o
+endif
+
 # Specific board support
 obj-$(CONFIG_MACH_OMAP_GENERIC)         += board-generic.o
 obj-$(CONFIG_MACH_OMAP_H4)              += board-h4.o
diff --git a/arch/arm/mach-omap2/dsp.c b/arch/arm/mach-omap2/dsp.c
new file mode 100644
index 000000000000..6feeeae6c21b
--- /dev/null
+++ b/arch/arm/mach-omap2/dsp.c
@@ -0,0 +1,85 @@
+/*
+ * TI's OMAP DSP platform device registration
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * Written by 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.
+ */
+
+#include <linux/platform_device.h>
+#include "prm.h"
+#include "cm.h"
+#ifdef CONFIG_BRIDGE_DVFS
+#include <plat/omap-pm.h>
+#endif
+
+#include <plat/dsp.h>
+
+extern phys_addr_t omap_dsp_get_mempool_base(void);
+
+static struct platform_device *omap_dsp_pdev;
+
+static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
+#ifdef CONFIG_BRIDGE_DVFS
+        .dsp_set_min_opp = omap_pm_dsp_set_min_opp,
+        .dsp_get_opp = omap_pm_dsp_get_opp,
+        .cpu_set_freq = omap_pm_cpu_set_freq,
+        .cpu_get_freq = omap_pm_cpu_get_freq,
+#endif
+        .dsp_prm_read = prm_read_mod_reg,
+        .dsp_prm_write = prm_write_mod_reg,
+        .dsp_prm_rmw_bits = prm_rmw_mod_reg_bits,
+        .dsp_cm_read = cm_read_mod_reg,
+        .dsp_cm_write = cm_write_mod_reg,
+        .dsp_cm_rmw_bits = cm_rmw_mod_reg_bits,
+};
+
+static int __init omap_dsp_init(void)
+{
+        struct platform_device *pdev;
+        int err = -ENOMEM;
+        struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
+
+        pdata->phys_mempool_base = omap_dsp_get_mempool_base();
+
+        if (pdata->phys_mempool_base) {
+                pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
+                pr_info("%s: %x bytes @ %x\n", __func__,
+                        pdata->phys_mempool_size, pdata->phys_mempool_base);
+        }
+
+        pdev = platform_device_alloc("omap-dsp", -1);
+        if (!pdev)
+                goto err_out;
+
+        err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
+        if (err)
+                goto err_out;
+
+        err = platform_device_add(pdev);
+        if (err)
+                goto err_out;
+
+        omap_dsp_pdev = pdev;
+        return 0;
+
+err_out:
+        platform_device_put(pdev);
+        return err;
+}
+module_init(omap_dsp_init);
+
+static void __exit omap_dsp_exit(void)
+{
+        platform_device_unregister(omap_dsp_pdev);
+}
+module_exit(omap_dsp_exit);
+
+MODULE_AUTHOR("Hiroshi DOYU");
+MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
+MODULE_LICENSE("GPL");