mirror of https://gitee.com/openkylin/linux.git
sound/aoa: Adapt to new i2c probing scheme
The i2c-powermac driver now creates the i2c devices properly from the device-tree, including workarounds for broken or missing device-tree bits, so let's just use the normal probe methods and get rid of the hand made device creation code. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Andreas Schwab
Benjamin Herrenschmidt
parent
3a3dd0186f
commit
26b0d14106
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@ -997,45 +997,10 @@ static void onyx_exit_codec(struct aoa_codec *codec)
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onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx);
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}
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static int onyx_create(struct i2c_adapter *adapter,
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struct device_node *node,
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int addr)
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{
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struct i2c_board_info info;
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struct i2c_client *client;
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memset(&info, 0, sizeof(struct i2c_board_info));
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strlcpy(info.type, "aoa_codec_onyx", I2C_NAME_SIZE);
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info.addr = addr;
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info.platform_data = node;
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client = i2c_new_device(adapter, &info);
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if (!client)
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return -ENODEV;
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/*
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* We know the driver is already loaded, so the device should be
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* already bound. If not it means binding failed, which suggests
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* the device doesn't really exist and should be deleted.
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* Ideally this would be replaced by better checks _before_
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* instantiating the device.
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*/
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if (!client->driver) {
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i2c_unregister_device(client);
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return -ENODEV;
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}
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/*
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* Let i2c-core delete that device on driver removal.
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* This is safe because i2c-core holds the core_lock mutex for us.
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*/
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list_add_tail(&client->detected, &client->driver->clients);
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return 0;
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}
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static int onyx_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device_node *node = client->dev.platform_data;
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struct device_node *node = client->dev.of_node;
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struct onyx *onyx;
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u8 dummy;
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@ -1071,40 +1036,6 @@ static int onyx_i2c_probe(struct i2c_client *client,
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return -ENODEV;
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}
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static int onyx_i2c_attach(struct i2c_adapter *adapter)
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{
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struct device_node *busnode, *dev = NULL;
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struct pmac_i2c_bus *bus;
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bus = pmac_i2c_adapter_to_bus(adapter);
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if (bus == NULL)
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return -ENODEV;
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busnode = pmac_i2c_get_bus_node(bus);
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while ((dev = of_get_next_child(busnode, dev)) != NULL) {
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if (of_device_is_compatible(dev, "pcm3052")) {
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const u32 *addr;
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printk(KERN_DEBUG PFX "found pcm3052\n");
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addr = of_get_property(dev, "reg", NULL);
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if (!addr)
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return -ENODEV;
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return onyx_create(adapter, dev, (*addr)>>1);
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}
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}
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/* if that didn't work, try desperate mode for older
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* machines that have stuff missing from the device tree */
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if (!of_device_is_compatible(busnode, "k2-i2c"))
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return -ENODEV;
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printk(KERN_DEBUG PFX "found k2-i2c, checking if onyx chip is on it\n");
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/* probe both possible addresses for the onyx chip */
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if (onyx_create(adapter, NULL, 0x46) == 0)
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return 0;
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return onyx_create(adapter, NULL, 0x47);
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}
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static int onyx_i2c_remove(struct i2c_client *client)
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{
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struct onyx *onyx = i2c_get_clientdata(client);
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@ -1117,16 +1048,16 @@ static int onyx_i2c_remove(struct i2c_client *client)
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}
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static const struct i2c_device_id onyx_i2c_id[] = {
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{ "aoa_codec_onyx", 0 },
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{ "MAC,pcm3052", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c,onyx_i2c_id);
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static struct i2c_driver onyx_driver = {
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.driver = {
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.name = "aoa_codec_onyx",
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.owner = THIS_MODULE,
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},
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.attach_adapter = onyx_i2c_attach,
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.probe = onyx_i2c_probe,
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.remove = onyx_i2c_remove,
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.id_table = onyx_i2c_id,
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@ -883,43 +883,10 @@ static void tas_exit_codec(struct aoa_codec *codec)
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}
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static int tas_create(struct i2c_adapter *adapter,
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struct device_node *node,
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int addr)
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{
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struct i2c_board_info info;
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struct i2c_client *client;
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memset(&info, 0, sizeof(struct i2c_board_info));
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strlcpy(info.type, "aoa_codec_tas", I2C_NAME_SIZE);
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info.addr = addr;
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info.platform_data = node;
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client = i2c_new_device(adapter, &info);
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if (!client)
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return -ENODEV;
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/*
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* We know the driver is already loaded, so the device should be
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* already bound. If not it means binding failed, and then there
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* is no point in keeping the device instantiated.
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*/
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if (!client->driver) {
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i2c_unregister_device(client);
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return -ENODEV;
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}
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/*
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* Let i2c-core delete that device on driver removal.
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* This is safe because i2c-core holds the core_lock mutex for us.
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*/
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list_add_tail(&client->detected, &client->driver->clients);
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return 0;
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}
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static int tas_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device_node *node = client->dev.platform_data;
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struct device_node *node = client->dev.of_node;
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struct tas *tas;
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tas = kzalloc(sizeof(struct tas), GFP_KERNEL);
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@ -953,47 +920,6 @@ static int tas_i2c_probe(struct i2c_client *client,
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return -EINVAL;
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}
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static int tas_i2c_attach(struct i2c_adapter *adapter)
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{
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struct device_node *busnode, *dev = NULL;
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struct pmac_i2c_bus *bus;
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bus = pmac_i2c_adapter_to_bus(adapter);
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if (bus == NULL)
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return -ENODEV;
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busnode = pmac_i2c_get_bus_node(bus);
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while ((dev = of_get_next_child(busnode, dev)) != NULL) {
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if (of_device_is_compatible(dev, "tas3004")) {
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const u32 *addr;
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printk(KERN_DEBUG PFX "found tas3004\n");
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addr = of_get_property(dev, "reg", NULL);
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if (!addr)
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continue;
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return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f);
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}
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/* older machines have no 'codec' node with a 'compatible'
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* property that says 'tas3004', they just have a 'deq'
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* node without any such property... */
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if (strcmp(dev->name, "deq") == 0) {
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const u32 *_addr;
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u32 addr;
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printk(KERN_DEBUG PFX "found 'deq' node\n");
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_addr = of_get_property(dev, "i2c-address", NULL);
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if (!_addr)
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continue;
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addr = ((*_addr) >> 1) & 0x7f;
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/* now, if the address doesn't match any of the two
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* that a tas3004 can have, we cannot handle this.
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* I doubt it ever happens but hey. */
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if (addr != 0x34 && addr != 0x35)
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continue;
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return tas_create(adapter, dev, addr);
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}
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}
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return -ENODEV;
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}
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static int tas_i2c_remove(struct i2c_client *client)
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{
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struct tas *tas = i2c_get_clientdata(client);
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@ -1011,16 +937,16 @@ static int tas_i2c_remove(struct i2c_client *client)
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}
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static const struct i2c_device_id tas_i2c_id[] = {
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{ "aoa_codec_tas", 0 },
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{ "MAC,tas3004", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c,tas_i2c_id);
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static struct i2c_driver tas_driver = {
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.driver = {
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.name = "aoa_codec_tas",
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.owner = THIS_MODULE,
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},
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.attach_adapter = tas_i2c_attach,
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.probe = tas_i2c_probe,
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.remove = tas_i2c_remove,
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.id_table = tas_i2c_id,
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