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authorTimur Tabi <timur@freescale.com>2011-12-01 19:52:46 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-12-02 10:37:17 +0000
commita806aa9207ad59933464efbe6009394723713c0d (patch)
tree4a120f350c9ab924938c8d672cbb5c324c30cc73
parent6f526f0a86dbb22fd2fc5a873f55c9e2341a79c0 (diff)
downloadlinux-a806aa9207ad59933464efbe6009394723713c0d.tar.bz2
ASoC: p1022ds: add support for fsl,P1022 and fsl,P1022DS model names
Commit ab827d97 ("powerpc/85xx: Rework P1022DS device tree") renamed the the /model property of the P1022DS device tree from "fsl,P1022" to "fsl,P1022DS". To support both old and new device trees, the ASoC machine driver for the P1022DS needs to query the /model property and update the platform driver object dynamically. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--sound/soc/fsl/p1022_ds.c36
1 files changed, 28 insertions, 8 deletions
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
index 2c064a9824ad..309162652287 100644
--- a/sound/soc/fsl/p1022_ds.c
+++ b/sound/soc/fsl/p1022_ds.c
@@ -540,12 +540,6 @@ static struct platform_driver p1022_ds_driver = {
.probe = p1022_ds_probe,
.remove = __devexit_p(p1022_ds_remove),
.driver = {
- /* The name must match the 'model' property in the device tree,
- * in lowercase letters, but only the part after that last
- * comma. This is because some model properties have a "fsl,"
- * prefix.
- */
- .name = "snd-soc-p1022",
.owner = THIS_MODULE,
},
};
@@ -559,13 +553,39 @@ 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);
- pr_info("Freescale P1022 DS ALSA SoC machine driver\n");
+ /*
+ * 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");
if (of_address_to_resource(guts_np, 0, &res)) {
- pr_err("p1022-ds: missing/invalid global utilities node\n");
+ pr_err("snd-soc-p1022ds: missing/invalid global utils node\n");
+ of_node_put(guts_np);
return -EINVAL;
}
guts_phys = res.start;