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>

3 files changed, 63 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 3008e7104487..57205a49289e 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -37,6 +37,7 @@
 #include <plat/fpga.h>
 #include <plat/serial.h>
 #include <plat/vram.h>
+#include <plat/dsp.h>
 
 #include <plat/clock.h>
 
@@ -87,6 +88,7 @@ void __init omap_reserve(void)
 {
         omapfb_reserve_sdram_memblock();
         omap_vram_reserve_sdram_memblock();
+        omap_dsp_reserve_sdram_memblock();
 }
 
 /*
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index d1920be7833b..4c8f9b96aa6c 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/slab.h>
+#include <linux/memblock.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -272,6 +273,35 @@ static void omap_init_wdt(void)
 static inline void omap_init_wdt(void) {}
 #endif
 
+#if defined(CONFIG_TIDSPBRIDGE) || defined(CONFIG_TIDSPBRIDGE_MODULE)
+
+static phys_addr_t omap_dsp_phys_mempool_base;
+
+void __init omap_dsp_reserve_sdram_memblock(void)
+{
+        phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
+        phys_addr_t paddr;
+
+        if (!size)
+                return;
+
+        paddr = __memblock_alloc_base(size, SZ_1M, MEMBLOCK_REAL_LIMIT);
+        if (!paddr) {
+                pr_err("%s: failed to reserve %x bytes\n",
+                                __func__, size);
+                return;
+        }
+
+        omap_dsp_phys_mempool_base = paddr;
+}
+
+phys_addr_t omap_dsp_get_mempool_base(void)
+{
+        return omap_dsp_phys_mempool_base;
+}
+EXPORT_SYMBOL(omap_dsp_get_mempool_base);
+#endif
+
 /*
  * This gets called after board-specific INIT_MACHINE, and initializes most
  * on-chip peripherals accessible on this board (except for few like USB):
diff --git a/arch/arm/plat-omap/include/plat/dsp.h b/arch/arm/plat-omap/include/plat/dsp.h
new file mode 100644
index 000000000000..9c604b390f9f
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/dsp.h
@@ -0,0 +1,31 @@
+#ifndef __OMAP_DSP_H__
+#define __OMAP_DSP_H__
+
+#include <linux/types.h>
+
+struct omap_dsp_platform_data {
+        void (*dsp_set_min_opp) (u8 opp_id);
+        u8 (*dsp_get_opp) (void);
+        void (*cpu_set_freq) (unsigned long f);
+        unsigned long (*cpu_get_freq) (void);
+        unsigned long mpu_speed[6];
+
+        /* functions to write and read PRCM registers */
+        void (*dsp_prm_write)(u32, s16 , u16);
+        u32 (*dsp_prm_read)(s16 , u16);
+        u32 (*dsp_prm_rmw_bits)(u32, u32, s16, s16);
+        void (*dsp_cm_write)(u32, s16 , u16);
+        u32 (*dsp_cm_read)(s16 , u16);
+        u32 (*dsp_cm_rmw_bits)(u32, u32, s16, s16);
+
+        phys_addr_t phys_mempool_base;
+        phys_addr_t phys_mempool_size;
+};
+
+#if defined(CONFIG_TIDSPBRIDGE) || defined(CONFIG_TIDSPBRIDGE_MODULE)
+extern void omap_dsp_reserve_sdram_memblock(void);
+#else
+static inline void omap_dsp_reserve_sdram_memblock(void) { }
+#endif
+
+#endif