ASoC: fsl: check property 'compatible' for the machine name

Check /compatible rather than /model to determine the machine name.
The p1022ds older device trees get a different /model from the new
ones, while /compatible is consistent there, so checking /compatible
will save the bother of detecting older p1022ds device trees.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 9 insertions, 31 deletions

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 3e066966d878..2eb407fa3b48 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -716,12 +716,12 @@ static int __devinit fsl_ssi_probe(struct platform_device *pdev)
         }
 
         /* Trigger the machine driver's probe function.  The platform driver
-         * name of the machine driver is taken from the /model property of the
+         * name of the machine driver is taken from /compatible property of the
          * device tree.  We also pass the address of the CPU DAI driver
          * structure.
          */
-        sprop = of_get_property(of_find_node_by_path("/"), "model", NULL);
-        /* Sometimes the model name has a "fsl," prefix, so we strip that. */
+        sprop = of_get_property(of_find_node_by_path("/"), "compatible", NULL);
+        /* Sometimes the compatible name has a "fsl," prefix, so we strip it. */
         p = strrchr(sprop, ',');
         if (p)
                 sprop = p + 1;
diff --git a/sound/soc/fsl/mpc8610_hpcd.c b/sound/soc/fsl/mpc8610_hpcd.c
index fcf9302f59b4..afbabf427f27 100644
--- a/sound/soc/fsl/mpc8610_hpcd.c
+++ b/sound/soc/fsl/mpc8610_hpcd.c
@@ -546,7 +546,7 @@ static struct platform_driver mpc8610_hpcd_driver = {
         .probe = mpc8610_hpcd_probe,
         .remove = __devexit_p(mpc8610_hpcd_remove),
         .driver = {
-                /* The name must match the 'model' property in the device tree,
+                /* The name must match 'compatible' property in the device tree,
                  * in lowercase letters.
                  */
                 .name = "snd-soc-mpc8610hpcd",
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
index d32ec4646d25..b88987083475 100644
--- a/sound/soc/fsl/p1022_ds.c
+++ b/sound/soc/fsl/p1022_ds.c
@@ -543,6 +543,11 @@ static struct platform_driver p1022_ds_driver = {
         .probe = p1022_ds_probe,
         .remove = __devexit_p(p1022_ds_remove),
         .driver = {
+                /*
+                 * The name must match 'compatible' property in the device tree,
+                 * in lowercase letters.
+                 */
+                .name = "snd-soc-p1022ds",
                 .owner = THIS_MODULE,
         },
 };
@@ -556,33 +561,6 @@ static int __init p1022_ds_init(void)
 {
         struct device_node *guts_np;
         struct resource res;
-        const char *sprop;
-
-        /*
-         * Check if we're actually running on a P1022DS.  Older device trees
-         * have a model of "fsl,P1022" and newer ones use "fsl,P1022DS", so we
-         * need to support both.  The SSI driver uses that property to link to
-         * the machine driver, so have to match it.
-         */
-        sprop = of_get_property(of_find_node_by_path("/"), "model", NULL);
-        if (!sprop) {
-                pr_err("snd-soc-p1022ds: missing /model node");
-                return -ENODEV;
-        }
-
-        pr_debug("snd-soc-p1022ds: board model name is %s\n", sprop);
-
-        /*
-         * The name of this board, taken from the device tree.  Normally, this is a*
-         * fixed string, but some P1022DS device trees have a /model property of
-         * "fsl,P1022", and others have "fsl,P1022DS".
-         */
-        if (strcasecmp(sprop, "fsl,p1022ds") == 0)
-                p1022_ds_driver.driver.name = "snd-soc-p1022ds";
-        else if (strcasecmp(sprop, "fsl,p1022") == 0)
-                p1022_ds_driver.driver.name = "snd-soc-p1022";
-        else
-                return -ENODEV;
 
         /* Get the physical address of the global utilities registers */
         guts_np = of_find_compatible_node(NULL, NULL, "fsl,p1022-guts");