forked from Minki/linux
windfarm: Convert to new-style i2c drivers
The legacy i2c binding model is going away soon, so convert the macintosh windfarm drivers to the new model or they will break. Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Johannes Berg <johannes@sipsolutions.net> Tested-by: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Jean Delvare
parent
1b9f37d488
commit
351ca3e311
@ -37,34 +37,22 @@
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struct wf_lm75_sensor {
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int ds1775 : 1;
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int inited : 1;
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struct i2c_client i2c;
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struct i2c_client *i2c;
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struct wf_sensor sens;
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};
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#define wf_to_lm75(c) container_of(c, struct wf_lm75_sensor, sens)
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#define i2c_to_lm75(c) container_of(c, struct wf_lm75_sensor, i2c)
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static int wf_lm75_attach(struct i2c_adapter *adapter);
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static int wf_lm75_detach(struct i2c_client *client);
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static struct i2c_driver wf_lm75_driver = {
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.driver = {
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.name = "wf_lm75",
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},
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.attach_adapter = wf_lm75_attach,
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.detach_client = wf_lm75_detach,
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};
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static int wf_lm75_get(struct wf_sensor *sr, s32 *value)
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{
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struct wf_lm75_sensor *lm = wf_to_lm75(sr);
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s32 data;
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if (lm->i2c.adapter == NULL)
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if (lm->i2c == NULL)
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return -ENODEV;
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/* Init chip if necessary */
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if (!lm->inited) {
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u8 cfg_new, cfg = (u8)i2c_smbus_read_byte_data(&lm->i2c, 1);
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u8 cfg_new, cfg = (u8)i2c_smbus_read_byte_data(lm->i2c, 1);
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DBG("wf_lm75: Initializing %s, cfg was: %02x\n",
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sr->name, cfg);
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@ -73,7 +61,7 @@ static int wf_lm75_get(struct wf_sensor *sr, s32 *value)
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* the firmware for now
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*/
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cfg_new = cfg & ~0x01;
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i2c_smbus_write_byte_data(&lm->i2c, 1, cfg_new);
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i2c_smbus_write_byte_data(lm->i2c, 1, cfg_new);
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lm->inited = 1;
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/* If we just powered it up, let's wait 200 ms */
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@ -81,7 +69,7 @@ static int wf_lm75_get(struct wf_sensor *sr, s32 *value)
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}
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/* Read temperature register */
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data = (s32)le16_to_cpu(i2c_smbus_read_word_data(&lm->i2c, 0));
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data = (s32)le16_to_cpu(i2c_smbus_read_word_data(lm->i2c, 0));
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data <<= 8;
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*value = data;
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@ -92,12 +80,6 @@ static void wf_lm75_release(struct wf_sensor *sr)
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{
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struct wf_lm75_sensor *lm = wf_to_lm75(sr);
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/* check if client is registered and detach from i2c */
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if (lm->i2c.adapter) {
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i2c_detach_client(&lm->i2c);
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lm->i2c.adapter = NULL;
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}
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kfree(lm);
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}
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@ -107,59 +89,77 @@ static struct wf_sensor_ops wf_lm75_ops = {
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.owner = THIS_MODULE,
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};
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static struct wf_lm75_sensor *wf_lm75_create(struct i2c_adapter *adapter,
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u8 addr, int ds1775,
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const char *loc)
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static int wf_lm75_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct wf_lm75_sensor *lm;
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int rc;
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DBG("wf_lm75: creating %s device at address 0x%02x\n",
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ds1775 ? "ds1775" : "lm75", addr);
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lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
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if (lm == NULL)
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return NULL;
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return -ENODEV;
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lm->inited = 0;
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lm->ds1775 = id->driver_data;
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lm->i2c = client;
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lm->sens.name = client->dev.platform_data;
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lm->sens.ops = &wf_lm75_ops;
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i2c_set_clientdata(client, lm);
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rc = wf_register_sensor(&lm->sens);
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if (rc) {
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i2c_set_clientdata(client, NULL);
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kfree(lm);
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}
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return rc;
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}
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static struct i2c_client *wf_lm75_create(struct i2c_adapter *adapter,
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u8 addr, int ds1775,
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const char *loc)
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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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char *name;
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DBG("wf_lm75: creating %s device at address 0x%02x\n",
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ds1775 ? "ds1775" : "lm75", addr);
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/* Usual rant about sensor names not beeing very consistent in
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* the device-tree, oh well ...
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* Add more entries below as you deal with more setups
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*/
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if (!strcmp(loc, "Hard drive") || !strcmp(loc, "DRIVE BAY"))
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lm->sens.name = "hd-temp";
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name = "hd-temp";
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else if (!strcmp(loc, "Incoming Air Temp"))
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lm->sens.name = "incoming-air-temp";
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name = "incoming-air-temp";
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else if (!strcmp(loc, "ODD Temp"))
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lm->sens.name = "optical-drive-temp";
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name = "optical-drive-temp";
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else if (!strcmp(loc, "HD Temp"))
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lm->sens.name = "hard-drive-temp";
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name = "hard-drive-temp";
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else
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goto fail;
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lm->inited = 0;
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lm->sens.ops = &wf_lm75_ops;
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lm->ds1775 = ds1775;
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lm->i2c.addr = (addr >> 1) & 0x7f;
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lm->i2c.adapter = adapter;
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lm->i2c.driver = &wf_lm75_driver;
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strncpy(lm->i2c.name, lm->sens.name, I2C_NAME_SIZE-1);
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memset(&info, 0, sizeof(struct i2c_board_info));
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info.addr = (addr >> 1) & 0x7f;
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info.platform_data = name;
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strlcpy(info.type, ds1775 ? "wf_ds1775" : "wf_lm75", I2C_NAME_SIZE);
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rc = i2c_attach_client(&lm->i2c);
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if (rc) {
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printk(KERN_ERR "windfarm: failed to attach %s %s to i2c,"
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" err %d\n", ds1775 ? "ds1775" : "lm75",
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lm->i2c.name, rc);
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client = i2c_new_device(adapter, &info);
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if (client == NULL) {
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printk(KERN_ERR "windfarm: failed to attach %s %s to i2c\n",
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ds1775 ? "ds1775" : "lm75", name);
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goto fail;
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}
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if (wf_register_sensor(&lm->sens)) {
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i2c_detach_client(&lm->i2c);
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goto fail;
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}
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return lm;
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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 client;
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fail:
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kfree(lm);
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return NULL;
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}
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@ -202,21 +202,38 @@ static int wf_lm75_attach(struct i2c_adapter *adapter)
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return 0;
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}
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static int wf_lm75_detach(struct i2c_client *client)
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static int wf_lm75_remove(struct i2c_client *client)
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{
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struct wf_lm75_sensor *lm = i2c_to_lm75(client);
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struct wf_lm75_sensor *lm = i2c_get_clientdata(client);
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DBG("wf_lm75: i2c detatch called for %s\n", lm->sens.name);
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/* Mark client detached */
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lm->i2c.adapter = NULL;
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lm->i2c = NULL;
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/* release sensor */
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wf_unregister_sensor(&lm->sens);
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i2c_set_clientdata(client, NULL);
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return 0;
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}
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static const struct i2c_device_id wf_lm75_id[] = {
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{ "wf_lm75", 0 },
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{ "wf_ds1775", 1 },
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{ }
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};
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static struct i2c_driver wf_lm75_driver = {
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.driver = {
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.name = "wf_lm75",
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},
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.attach_adapter = wf_lm75_attach,
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.probe = wf_lm75_probe,
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.remove = wf_lm75_remove,
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.id_table = wf_lm75_id,
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};
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static int __init wf_lm75_sensor_init(void)
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{
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/* Don't register on old machines that use therm_pm72 for now */
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@ -26,34 +26,22 @@
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#define MAX6690_EXTERNAL_TEMP 1
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struct wf_6690_sensor {
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struct i2c_client i2c;
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struct i2c_client *i2c;
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struct wf_sensor sens;
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};
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#define wf_to_6690(x) container_of((x), struct wf_6690_sensor, sens)
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#define i2c_to_6690(x) container_of((x), struct wf_6690_sensor, i2c)
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static int wf_max6690_attach(struct i2c_adapter *adapter);
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static int wf_max6690_detach(struct i2c_client *client);
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static struct i2c_driver wf_max6690_driver = {
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.driver = {
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.name = "wf_max6690",
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},
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.attach_adapter = wf_max6690_attach,
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.detach_client = wf_max6690_detach,
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};
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static int wf_max6690_get(struct wf_sensor *sr, s32 *value)
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{
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struct wf_6690_sensor *max = wf_to_6690(sr);
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s32 data;
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if (max->i2c.adapter == NULL)
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if (max->i2c == NULL)
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return -ENODEV;
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/* chip gets initialized by firmware */
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data = i2c_smbus_read_byte_data(&max->i2c, MAX6690_EXTERNAL_TEMP);
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data = i2c_smbus_read_byte_data(max->i2c, MAX6690_EXTERNAL_TEMP);
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if (data < 0)
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return data;
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*value = data << 16;
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@ -64,10 +52,6 @@ static void wf_max6690_release(struct wf_sensor *sr)
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{
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struct wf_6690_sensor *max = wf_to_6690(sr);
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if (max->i2c.adapter) {
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i2c_detach_client(&max->i2c);
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max->i2c.adapter = NULL;
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}
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kfree(max);
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}
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@ -77,19 +61,40 @@ static struct wf_sensor_ops wf_max6690_ops = {
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.owner = THIS_MODULE,
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};
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static void wf_max6690_create(struct i2c_adapter *adapter, u8 addr,
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const char *loc)
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static int wf_max6690_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct wf_6690_sensor *max;
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char *name;
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int rc;
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max = kzalloc(sizeof(struct wf_6690_sensor), GFP_KERNEL);
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if (max == NULL) {
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printk(KERN_ERR "windfarm: Couldn't create MAX6690 sensor %s: "
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"no memory\n", loc);
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return;
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printk(KERN_ERR "windfarm: Couldn't create MAX6690 sensor: "
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"no memory\n");
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return -ENOMEM;
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}
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max->i2c = client;
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max->sens.name = client->dev.platform_data;
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max->sens.ops = &wf_max6690_ops;
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i2c_set_clientdata(client, max);
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rc = wf_register_sensor(&max->sens);
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if (rc) {
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i2c_set_clientdata(client, NULL);
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kfree(max);
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}
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return rc;
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}
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static struct i2c_client *wf_max6690_create(struct i2c_adapter *adapter,
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u8 addr, const char *loc)
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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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char *name;
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if (!strcmp(loc, "BACKSIDE"))
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name = "backside-temp";
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else if (!strcmp(loc, "NB Ambient"))
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@ -99,27 +104,26 @@ static void wf_max6690_create(struct i2c_adapter *adapter, u8 addr,
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else
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goto fail;
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max->sens.ops = &wf_max6690_ops;
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max->sens.name = name;
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max->i2c.addr = addr >> 1;
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max->i2c.adapter = adapter;
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max->i2c.driver = &wf_max6690_driver;
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strncpy(max->i2c.name, name, I2C_NAME_SIZE-1);
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memset(&info, 0, sizeof(struct i2c_board_info));
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info.addr = addr >> 1;
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info.platform_data = name;
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strlcpy(info.type, "wf_max6690", I2C_NAME_SIZE);
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if (i2c_attach_client(&max->i2c)) {
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client = i2c_new_device(adapter, &info);
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if (client == NULL) {
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printk(KERN_ERR "windfarm: failed to attach MAX6690 sensor\n");
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goto fail;
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}
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if (wf_register_sensor(&max->sens)) {
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i2c_detach_client(&max->i2c);
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goto fail;
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}
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return;
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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 client;
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fail:
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kfree(max);
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return NULL;
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}
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static int wf_max6690_attach(struct i2c_adapter *adapter)
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@ -154,16 +158,31 @@ static int wf_max6690_attach(struct i2c_adapter *adapter)
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return 0;
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}
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static int wf_max6690_detach(struct i2c_client *client)
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static int wf_max6690_remove(struct i2c_client *client)
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{
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struct wf_6690_sensor *max = i2c_to_6690(client);
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struct wf_6690_sensor *max = i2c_get_clientdata(client);
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max->i2c.adapter = NULL;
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max->i2c = NULL;
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wf_unregister_sensor(&max->sens);
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return 0;
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}
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static const struct i2c_device_id wf_max6690_id[] = {
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{ "wf_max6690", 0 },
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{ }
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};
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static struct i2c_driver wf_max6690_driver = {
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.driver = {
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.name = "wf_max6690",
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},
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.attach_adapter = wf_max6690_attach,
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.probe = wf_max6690_probe,
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.remove = wf_max6690_remove,
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.id_table = wf_max6690_id,
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};
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static int __init wf_max6690_sensor_init(void)
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{
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/* Don't register on old machines that use therm_pm72 for now */
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@ -39,7 +39,7 @@ struct wf_sat {
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struct mutex mutex;
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unsigned long last_read; /* jiffies when cache last updated */
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u8 cache[16];
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struct i2c_client i2c;
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struct i2c_client *i2c;
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struct device_node *node;
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};
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@ -54,18 +54,6 @@ struct wf_sat_sensor {
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};
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#define wf_to_sat(c) container_of(c, struct wf_sat_sensor, sens)
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#define i2c_to_sat(c) container_of(c, struct wf_sat, i2c)
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static int wf_sat_attach(struct i2c_adapter *adapter);
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static int wf_sat_detach(struct i2c_client *client);
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static struct i2c_driver wf_sat_driver = {
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.driver = {
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.name = "wf_smu_sat",
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},
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.attach_adapter = wf_sat_attach,
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.detach_client = wf_sat_detach,
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};
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struct smu_sdbp_header *smu_sat_get_sdb_partition(unsigned int sat_id, int id,
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unsigned int *size)
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@ -81,13 +69,13 @@ struct smu_sdbp_header *smu_sat_get_sdb_partition(unsigned int sat_id, int id,
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if (sat_id > 1 || (sat = sats[sat_id]) == NULL)
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return NULL;
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err = i2c_smbus_write_word_data(&sat->i2c, 8, id << 8);
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err = i2c_smbus_write_word_data(sat->i2c, 8, id << 8);
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if (err) {
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printk(KERN_ERR "smu_sat_get_sdb_part wr error %d\n", err);
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return NULL;
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}
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err = i2c_smbus_read_word_data(&sat->i2c, 9);
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err = i2c_smbus_read_word_data(sat->i2c, 9);
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if (err < 0) {
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printk(KERN_ERR "smu_sat_get_sdb_part rd len error\n");
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return NULL;
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@ -105,7 +93,7 @@ struct smu_sdbp_header *smu_sat_get_sdb_partition(unsigned int sat_id, int id,
|
||||
return NULL;
|
||||
|
||||
for (i = 0; i < len; i += 4) {
|
||||
err = i2c_smbus_read_i2c_block_data(&sat->i2c, 0xa, 4, data);
|
||||
err = i2c_smbus_read_i2c_block_data(sat->i2c, 0xa, 4, data);
|
||||
if (err < 0) {
|
||||
printk(KERN_ERR "smu_sat_get_sdb_part rd err %d\n",
|
||||
err);
|
||||
@ -138,7 +126,7 @@ static int wf_sat_read_cache(struct wf_sat *sat)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = i2c_smbus_read_i2c_block_data(&sat->i2c, 0x3f, 16, sat->cache);
|
||||
err = i2c_smbus_read_i2c_block_data(sat->i2c, 0x3f, 16, sat->cache);
|
||||
if (err < 0)
|
||||
return err;
|
||||
sat->last_read = jiffies;
|
||||
@ -161,7 +149,7 @@ static int wf_sat_get(struct wf_sensor *sr, s32 *value)
|
||||
int i, err;
|
||||
s32 val;
|
||||
|
||||
if (sat->i2c.adapter == NULL)
|
||||
if (sat->i2c == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
mutex_lock(&sat->mutex);
|
||||
@ -193,10 +181,6 @@ static void wf_sat_release(struct wf_sensor *sr)
|
||||
struct wf_sat *sat = sens->sat;
|
||||
|
||||
if (atomic_dec_and_test(&sat->refcnt)) {
|
||||
if (sat->i2c.adapter) {
|
||||
i2c_detach_client(&sat->i2c);
|
||||
sat->i2c.adapter = NULL;
|
||||
}
|
||||
if (sat->nr >= 0)
|
||||
sats[sat->nr] = NULL;
|
||||
kfree(sat);
|
||||
@ -212,15 +196,10 @@ static struct wf_sensor_ops wf_sat_ops = {
|
||||
|
||||
static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
|
||||
{
|
||||
struct wf_sat *sat;
|
||||
struct wf_sat_sensor *sens;
|
||||
struct i2c_board_info info;
|
||||
struct i2c_client *client;
|
||||
const u32 *reg;
|
||||
const char *loc, *type;
|
||||
u8 addr, chip, core;
|
||||
struct device_node *child;
|
||||
int shift, cpu, index;
|
||||
char *name;
|
||||
int vsens[2], isens[2];
|
||||
u8 addr;
|
||||
|
||||
reg = of_get_property(dev, "reg", NULL);
|
||||
if (reg == NULL)
|
||||
@ -228,22 +207,47 @@ static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
|
||||
addr = *reg;
|
||||
DBG(KERN_DEBUG "wf_sat: creating sat at address %x\n", addr);
|
||||
|
||||
memset(&info, 0, sizeof(struct i2c_board_info));
|
||||
info.addr = (addr >> 1) & 0x7f;
|
||||
info.platform_data = dev;
|
||||
strlcpy(info.type, "wf_sat", I2C_NAME_SIZE);
|
||||
|
||||
client = i2c_new_device(adapter, &info);
|
||||
if (client == NULL) {
|
||||
printk(KERN_ERR "windfarm: failed to attach smu-sat to i2c\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* Let i2c-core delete that device on driver removal.
|
||||
* This is safe because i2c-core holds the core_lock mutex for us.
|
||||
*/
|
||||
list_add_tail(&client->detected, &client->driver->clients);
|
||||
}
|
||||
|
||||
static int wf_sat_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct device_node *dev = client->dev.platform_data;
|
||||
struct wf_sat *sat;
|
||||
struct wf_sat_sensor *sens;
|
||||
const u32 *reg;
|
||||
const char *loc, *type;
|
||||
u8 chip, core;
|
||||
struct device_node *child;
|
||||
int shift, cpu, index;
|
||||
char *name;
|
||||
int vsens[2], isens[2];
|
||||
|
||||
sat = kzalloc(sizeof(struct wf_sat), GFP_KERNEL);
|
||||
if (sat == NULL)
|
||||
return;
|
||||
return -ENOMEM;
|
||||
sat->nr = -1;
|
||||
sat->node = of_node_get(dev);
|
||||
atomic_set(&sat->refcnt, 0);
|
||||
mutex_init(&sat->mutex);
|
||||
sat->i2c.addr = (addr >> 1) & 0x7f;
|
||||
sat->i2c.adapter = adapter;
|
||||
sat->i2c.driver = &wf_sat_driver;
|
||||
strncpy(sat->i2c.name, "smu-sat", I2C_NAME_SIZE-1);
|
||||
|
||||
if (i2c_attach_client(&sat->i2c)) {
|
||||
printk(KERN_ERR "windfarm: failed to attach smu-sat to i2c\n");
|
||||
goto fail;
|
||||
}
|
||||
sat->i2c = client;
|
||||
i2c_set_clientdata(client, sat);
|
||||
|
||||
vsens[0] = vsens[1] = -1;
|
||||
isens[0] = isens[1] = -1;
|
||||
@ -344,10 +348,7 @@ static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
|
||||
if (sat->nr >= 0)
|
||||
sats[sat->nr] = sat;
|
||||
|
||||
return;
|
||||
|
||||
fail:
|
||||
kfree(sat);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wf_sat_attach(struct i2c_adapter *adapter)
|
||||
@ -366,16 +367,32 @@ static int wf_sat_attach(struct i2c_adapter *adapter)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wf_sat_detach(struct i2c_client *client)
|
||||
static int wf_sat_remove(struct i2c_client *client)
|
||||
{
|
||||
struct wf_sat *sat = i2c_to_sat(client);
|
||||
struct wf_sat *sat = i2c_get_clientdata(client);
|
||||
|
||||
/* XXX TODO */
|
||||
|
||||
sat->i2c.adapter = NULL;
|
||||
sat->i2c = NULL;
|
||||
i2c_set_clientdata(client, NULL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id wf_sat_id[] = {
|
||||
{ "wf_sat", 0 },
|
||||
{ }
|
||||
};
|
||||
|
||||
static struct i2c_driver wf_sat_driver = {
|
||||
.driver = {
|
||||
.name = "wf_smu_sat",
|
||||
},
|
||||
.attach_adapter = wf_sat_attach,
|
||||
.probe = wf_sat_probe,
|
||||
.remove = wf_sat_remove,
|
||||
.id_table = wf_sat_id,
|
||||
};
|
||||
|
||||
static int __init sat_sensors_init(void)
|
||||
{
|
||||
return i2c_add_driver(&wf_sat_driver);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user