ASoC: Allow use of resource from the platform device for S3C IISv2

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/sound/soc/s3c24xx/s3c-i2s-v2.c b/sound/soc/s3c24xx/s3c-i2s-v2.c
index 34142c859225..cb85498723dd 100644
--- a/sound/soc/s3c24xx/s3c-i2s-v2.c
+++ b/sound/soc/s3c24xx/s3c-i2s-v2.c
@@ -580,6 +580,24 @@ int s3c_i2sv2_probe(struct platform_device *pdev,
         /* record our i2s structure for later use in the callbacks */
         dai->private_data = i2s;
 
+        if (!base) {
+                struct resource *res = platform_get_resource(pdev,
+                                                             IORESOURCE_MEM,
+                                                             0);
+                if (!res) {
+                        dev_err(dev, "Unable to get register resource\n");
+                        return -ENXIO;
+                }
+
+                if (!request_mem_region(res->start, resource_size(res),
+                                        "s3c64xx-i2s-v4")) {
+                        dev_err(dev, "Unable to request register region\n");
+                        return -EBUSY;
+                }
+
+                base = res->start;
+        }
+
         i2s->regs = ioremap(base, 0x100);
         if (i2s->regs == NULL) {
                 dev_err(dev, "cannot ioremap registers\n");