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| author | Wolfram Sang <wsa@the-dreams.de> | 2015-05-09 19:42:22 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-05-18 11:25:44 +0200 |
| commit | ac397c80de895094cbb72264c279fade45447cbf (patch) | |
| tree | 2d008fc2e70e739b3ac1d95ccb894c968cec59e3 /sound/ppc | |
| parent | 108c5df14a5fcc4a5470df2de091c48d54a553a3 (diff) | |
| download | lwn-ac397c80de895094cbb72264c279fade45447cbf.tar.gz lwn-ac397c80de895094cbb72264c279fade45447cbf.zip | |
ALSA: ppc: keywest: drop using attach adapter
As we now have deferred probing, we can use a custom mechanism and
finally get rid of this legacy interface from the i2c core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: Dan DeVoto <dand1972@yahoo.com>
Tested-by: Mark Elliott <txlitebeer@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/ppc')
| -rw-r--r-- | sound/ppc/keywest.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/sound/ppc/keywest.c b/sound/ppc/keywest.c index 0d1c27e911b8..d7627bae0836 100644 --- a/sound/ppc/keywest.c +++ b/sound/ppc/keywest.c @@ -52,7 +52,7 @@ static int keywest_attach_adapter(struct i2c_adapter *adapter) return -EINVAL; if (strncmp(adapter->name, "mac-io", 6)) - return 0; /* ignored */ + return -EINVAL; /* ignored */ memset(&info, 0, sizeof(struct i2c_board_info)); strlcpy(info.type, "keywest", I2C_NAME_SIZE); @@ -100,7 +100,6 @@ static struct i2c_driver keywest_driver = { .driver = { .name = "PMac Keywest Audio", }, - .attach_adapter = keywest_attach_adapter, .probe = keywest_probe, .remove = keywest_remove, .id_table = keywest_i2c_id, @@ -132,16 +131,32 @@ int snd_pmac_tumbler_post_init(void) /* exported */ int snd_pmac_keywest_init(struct pmac_keywest *i2c) { - int err; + struct i2c_adapter *adap; + int err, i = 0; if (keywest_ctx) return -EBUSY; + adap = i2c_get_adapter(0); + if (!adap) + return -EPROBE_DEFER; + keywest_ctx = i2c; if ((err = i2c_add_driver(&keywest_driver))) { snd_printk(KERN_ERR "cannot register keywest i2c driver\n"); + i2c_put_adapter(adap); return err; } - return 0; + + /* We assume Macs have consecutive I2C bus numbers starting at 0 */ + while (adap) { + err = keywest_attach_adapter(adap); + if (!err) + return 0; + i2c_put_adapter(adap); + adap = i2c_get_adapter(++i); + } + + return -ENODEV; } |