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
2009-06-15 18:01:51 +02:00
rodzic 1b9f37d488
commit 351ca3e311
3 zmienionych plików z 198 dodań i 145 usunięć

Wyświetl plik

@@ -39,7 +39,7 @@ struct wf_sat {
struct mutex mutex;
unsigned long last_read; /* jiffies when cache last updated */
u8 cache[16];
struct i2c_client i2c;
struct i2c_client *i2c;
struct device_node *node;
};
@@ -54,18 +54,6 @@ struct wf_sat_sensor {
};
#define wf_to_sat(c) container_of(c, struct wf_sat_sensor, sens)
#define i2c_to_sat(c) container_of(c, struct wf_sat, i2c)
static int wf_sat_attach(struct i2c_adapter *adapter);
static int wf_sat_detach(struct i2c_client *client);
static struct i2c_driver wf_sat_driver = {
.driver = {
.name = "wf_smu_sat",
},
.attach_adapter = wf_sat_attach,
.detach_client = wf_sat_detach,
};
struct smu_sdbp_header *smu_sat_get_sdb_partition(unsigned int sat_id, int id,
unsigned int *size)
@@ -81,13 +69,13 @@ struct smu_sdbp_header *smu_sat_get_sdb_partition(unsigned int sat_id, int id,
if (sat_id > 1 || (sat = sats[sat_id]) == NULL)
return NULL;
err = i2c_smbus_write_word_data(&sat->i2c, 8, id << 8);
err = i2c_smbus_write_word_data(sat->i2c, 8, id << 8);
if (err) {
printk(KERN_ERR "smu_sat_get_sdb_part wr error %d\n", err);
return NULL;
}
err = i2c_smbus_read_word_data(&sat->i2c, 9);
err = i2c_smbus_read_word_data(sat->i2c, 9);
if (err < 0) {
printk(KERN_ERR "smu_sat_get_sdb_part rd len error\n");
return NULL;
@@ -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);