All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl>
SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> */
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
goto out_unlock;
}
- res = idr_get_new(&i2c_adapter_idr, NULL, &id);
+ res = idr_get_new(&i2c_adapter_idr, adap, &id);
if (res < 0) {
if (res == -EAGAIN)
res = -ENOMEM;
if (driver->detach_adapter)
if ((res = driver->detach_adapter(adap))) {
dev_warn(&adap->dev, "can't detach adapter "
- "while detaching driver %s: driver not "
- "detached!", driver->name);
+ "while detaching driver %s: driver "
+ "not detached!\n", driver->name);
goto out_unlock;
}
}
/* detach any active clients. This must be done first, because
- * it can fail; in which case we give upp. */
+ * it can fail; in which case we give up. */
list_for_each_safe(item, _n, &adap->clients) {
client = list_entry(item, struct i2c_client, list);
res = adapter->client_unregister(client);
if (res) {
dev_err(&client->dev,
- "client_unregister [%s] failed, "
- "client not detached", client->name);
+ "client_unregister [%s] failed, "
+ "client not detached\n", client->name);
goto out;
}
}
struct i2c_adapter *adap=client->adapter;
struct i2c_msg msg;
- if (client->adapter->algo->master_xfer) {
- msg.addr = client->addr;
- msg.flags = client->flags & I2C_M_TEN;
- msg.len = count;
- msg.buf = (char *)buf;
+ msg.addr = client->addr;
+ msg.flags = client->flags & I2C_M_TEN;
+ msg.len = count;
+ msg.buf = (char *)buf;
- dev_dbg(&client->adapter->dev, "master_send: writing %d bytes.\n",
- count);
-
- down(&adap->bus_lock);
- ret = adap->algo->master_xfer(adap,&msg,1);
- up(&adap->bus_lock);
+ ret = i2c_transfer(adap, &msg, 1);
- /* if everything went ok (i.e. 1 msg transmitted), return #bytes
- * transmitted, else error code.
- */
- return (ret == 1 )? count : ret;
- } else {
- dev_err(&client->adapter->dev, "I2C level transfers not supported\n");
- return -ENOSYS;
- }
+ /* If everything went ok (i.e. 1 msg transmitted), return #bytes
+ transmitted, else error code. */
+ return (ret == 1) ? count : ret;
}
int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
struct i2c_adapter *adap=client->adapter;
struct i2c_msg msg;
int ret;
- if (client->adapter->algo->master_xfer) {
- msg.addr = client->addr;
- msg.flags = client->flags & I2C_M_TEN;
- msg.flags |= I2C_M_RD;
- msg.len = count;
- msg.buf = buf;
-
- dev_dbg(&client->adapter->dev, "master_recv: reading %d bytes.\n",
- count);
-
- down(&adap->bus_lock);
- ret = adap->algo->master_xfer(adap,&msg,1);
- up(&adap->bus_lock);
-
- dev_dbg(&client->adapter->dev, "master_recv: return:%d (count:%d, addr:0x%02x)\n",
- ret, count, client->addr);
-
- /* if everything went ok (i.e. 1 msg transmitted), return #bytes
- * transmitted, else error code.
- */
- return (ret == 1 )? count : ret;
- } else {
- dev_err(&client->adapter->dev, "I2C level transfers not supported\n");
- return -ENOSYS;
- }
+
+ msg.addr = client->addr;
+ msg.flags = client->flags & I2C_M_TEN;
+ msg.flags |= I2C_M_RD;
+ msg.len = count;
+ msg.buf = buf;
+
+ ret = i2c_transfer(adap, &msg, 1);
+
+ /* If everything went ok (i.e. 1 msg transmitted), return #bytes
+ transmitted, else error code. */
+ return (ret == 1) ? count : ret;
}
found = 1;
}
}
- for (i = 0;
- !found && (address_data->ignore_range[i] != I2C_CLIENT_END);
- i += 3) {
- if (((adap_id == address_data->ignore_range[i]) ||
- ((address_data->ignore_range[i]==ANY_I2C_BUS))) &&
- (addr >= address_data->ignore_range[i+1]) &&
- (addr <= address_data->ignore_range[i+2])) {
- dev_dbg(&adapter->dev, "found ignore_range parameter for adapter %d, "
- "addr %04x\n", adap_id,addr);
- found = 1;
- }
- }
if (found)
continue;
}
}
- for (i = 0;
- !found && (address_data->normal_i2c_range[i] != I2C_CLIENT_END);
- i += 2) {
- if ((addr >= address_data->normal_i2c_range[i]) &&
- (addr <= address_data->normal_i2c_range[i+1])) {
- found = 1;
- dev_dbg(&adapter->dev, "found normal i2c_range entry for adapter %d, "
- "addr %04x\n", adap_id,addr);
- }
- }
-
for (i = 0;
!found && (address_data->probe[i] != I2C_CLIENT_END);
i += 2) {
"addr %04x\n", adap_id,addr);
}
}
- for (i = 0;
- !found && (address_data->probe_range[i] != I2C_CLIENT_END);
- i += 3) {
- if (((adap_id == address_data->probe_range[i]) ||
- (address_data->probe_range[i] == ANY_I2C_BUS)) &&
- (addr >= address_data->probe_range[i+1]) &&
- (addr <= address_data->probe_range[i+2])) {
- found = 1;
- dev_dbg(&adapter->dev, "found probe_range parameter for adapter %d, "
- "addr %04x\n", adap_id,addr);
- }
- }
if (!found)
continue;
struct i2c_adapter* i2c_get_adapter(int id)
{
- struct list_head *item;
struct i2c_adapter *adapter;
down(&core_lists);
- list_for_each(item,&adapters) {
- adapter = list_entry(item, struct i2c_adapter, list);
- if (id == adapter->nr &&
- try_module_get(adapter->owner)) {
- up(&core_lists);
- return adapter;
- }
- }
+ adapter = (struct i2c_adapter *)idr_find(&i2c_adapter_idr, id);
+ if (adapter && !try_module_get(adapter->owner))
+ adapter = NULL;
+
up(&core_lists);
- return NULL;
+ return adapter;
}
void i2c_put_adapter(struct i2c_adapter *adap)
projects / powerpc.git / blobdiff