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authorTimur Tabi <timur@freescale.com>2011-12-01 19:52:47 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-12-02 10:37:18 +0000
commit6132725eac521b89dee3d58df3c6d04a1e50844c (patch)
tree994019cc02aacabc13f06353b91ee3525c47b0c6 /sound/soc/fsl/p1022_ds.c
parenta806aa9207ad59933464efbe6009394723713c0d (diff)
ASoC: fsl/powerpc: don't rely on the cell-index property
Instead of using the 'cell-index' property in the I2C adapter node to determine the adapter number, just query the i2c_adapter object directly. Previously, the I2C nodes always appeared in cell-index order, so the dynamic numbering coincided with the cell-index property. With commit ab827d97 ("powerpc/85xx: Rework P1022DS device tree"), the I2C nodes are unintentionally reversed in the device tree, and so the machine driver guesses the wrong I2C adapter number. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/fsl/p1022_ds.c')
-rw-r--r--sound/soc/fsl/p1022_ds.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
index 309162652287..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;
}