summaryrefslogtreecommitdiffstats
path: root/sound/soc/fsl/p1022_ds.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/fsl/p1022_ds.c')
-rw-r--r--sound/soc/fsl/p1022_ds.c49
1 files changed, 36 insertions, 13 deletions
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
index 2c064a9824ad..a5d4e80a9cf4 100644
--- a/sound/soc/fsl/p1022_ds.c
+++ b/sound/soc/fsl/p1022_ds.c
@@ -14,6 +14,7 @@
#include <linux/interrupt.h>
#include <linux/of_device.h>
#include <linux/slab.h>
+#include <linux/of_i2c.h>
#include <sound/soc.h>
#include <asm/fsl_guts.h>
@@ -252,8 +253,9 @@ static int get_parent_cell_index(struct device_node *np)
static int codec_node_dev_name(struct device_node *np, char *buf, size_t len)
{
const u32 *iprop;
- int bus, addr;
+ int addr;
char temp[DAI_NAME_SIZE];
+ struct i2c_client *i2c;
of_modalias_node(np, temp, DAI_NAME_SIZE);
@@ -263,11 +265,12 @@ static int codec_node_dev_name(struct device_node *np, char *buf, size_t len)
addr = be32_to_cpup(iprop);
- bus = get_parent_cell_index(np);
- if (bus < 0)
- return bus;
+ /* We need the adapter number */
+ i2c = of_find_i2c_device_by_node(np);
+ if (!i2c)
+ return -ENODEV;
- snprintf(buf, len, "%s.%u-%04x", temp, bus, addr);
+ snprintf(buf, len, "%s.%u-%04x", temp, i2c->adapter->nr, addr);
return 0;
}
@@ -540,12 +543,6 @@ 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 +556,39 @@ 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;
OpenPOWER on IntegriCloud