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>

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);