ARM: OMAP: Request DSP memory for McBSP

On OMAP1 some McBSP features depend on DSP. Also export
polling functions as suggested by Luis Cargnini.

Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 2af5bd5a1344..9cf83c4da9fa 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -201,6 +201,14 @@ static int omap_mcbsp_check(unsigned int id)
 static void omap_mcbsp_dsp_request(void)
 {
         if (cpu_is_omap15xx() || cpu_is_omap16xx()) {
+                int ret;
+
+                ret = omap_dsp_request_mem();
+                if (ret < 0) {
+                        printk(KERN_ERR "Could not get dsp memory: %i\n", ret);
+                        return;
+                }
+
                 clk_enable(mcbsp_dsp_ck);
                 clk_enable(mcbsp_api_ck);
 
@@ -219,6 +227,7 @@ static void omap_mcbsp_dsp_request(void)
 static void omap_mcbsp_dsp_free(void)
 {
         if (cpu_is_omap15xx() || cpu_is_omap16xx()) {
+                omap_dsp_release_mem();
                 clk_disable(mcbsp_dspxor_ck);
                 clk_disable(mcbsp_dsp_ck);
                 clk_disable(mcbsp_api_ck);
@@ -1024,6 +1033,8 @@ EXPORT_SYMBOL(omap_mcbsp_set_io_type);
 EXPORT_SYMBOL(omap_mcbsp_free);
 EXPORT_SYMBOL(omap_mcbsp_start);
 EXPORT_SYMBOL(omap_mcbsp_stop);
+EXPORT_SYMBOL(omap_mcbsp_pollread);
+EXPORT_SYMBOL(omap_mcbsp_pollwrite);
 EXPORT_SYMBOL(omap_mcbsp_xmit_word);
 EXPORT_SYMBOL(omap_mcbsp_recv_word);
 EXPORT_SYMBOL(omap_mcbsp_xmit_buffer);