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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>
This commit is contained in:
Timur Tabi 2011-12-01 19:52:47 -06:00 committed by Mark Brown
parent a806aa9207
commit 6132725eac
2 changed files with 16 additions and 10 deletions
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13
sound/soc/fsl/mpc8610_hpcd.c
View File

@ -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>
@ -249,8 +250,9 @@ 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);
@ -260,11 +262,12 @@ 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-codec.%u-%04x", temp, bus, addr);
snprintf(buf, len, "%s-codec.%u-%04x", temp, i2c->adapter->nr, addr);
return 0;
}

13
sound/soc/fsl/p1022_ds.c
View File

@ -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;
}