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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 14:29:17 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 14:29:17 -0400
commit4858704da75ba84ce21e6d4b3b974e8b8594c9f2 (patch)
tree153f92e4ac0d5c90890ee1b14458ea56e22f984e /drivers/macintosh/therm_adt746x.c
parent86ade88e15b0852fa437e816037ecb266ae990ad (diff)
parent036533e232922ec6667817de9b037d0b1ebd062e (diff)
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: therm_windtunnel: Convert to a new-style i2c driver therm_adt746x: Convert to a new-style i2c driver windfarm: Convert to new-style i2c drivers therm_pm72: Convert to a new-style i2c driver i2c-viapro: Add new PCI device ID for VX855 i2c/chips: Move max6875 to drivers/misc/eeprom i2c: Do not give adapters a default parent i2c: Do not probe for TV chips on Voodoo3 adapters i2c: Retry automatically on arbitration loss i2c: Remove void casts
Diffstat (limited to 'drivers/macintosh/therm_adt746x.c')
-rw-r--r--drivers/macintosh/therm_adt746x.c84
1 files changed, 42 insertions, 42 deletions
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index 0ddf9044948a..fde377c60cca 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -72,7 +72,7 @@ MODULE_PARM_DESC(verbose,"Verbose log operations "
72 "(default 0)"); 72 "(default 0)");
73 73
74struct thermostat { 74struct thermostat {
75 struct i2c_client clt; 75 struct i2c_client *clt;
76 u8 temps[3]; 76 u8 temps[3];
77 u8 cached_temp[3]; 77 u8 cached_temp[3];
78 u8 initial_limits[3]; 78 u8 initial_limits[3];
@@ -87,9 +87,6 @@ static struct of_device * of_dev;
87static struct thermostat* thermostat; 87static struct thermostat* thermostat;
88static struct task_struct *thread_therm = NULL; 88static struct task_struct *thread_therm = NULL;
89 89
90static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
91 int busno);
92
93static void write_both_fan_speed(struct thermostat *th, int speed); 90static void write_both_fan_speed(struct thermostat *th, int speed);
94static void write_fan_speed(struct thermostat *th, int speed, int fan); 91static void write_fan_speed(struct thermostat *th, int speed, int fan);
95 92
@@ -101,7 +98,7 @@ write_reg(struct thermostat* th, int reg, u8 data)
101 98
102 tmp[0] = reg; 99 tmp[0] = reg;
103 tmp[1] = data; 100 tmp[1] = data;
104 rc = i2c_master_send(&th->clt, (const char *)tmp, 2); 101 rc = i2c_master_send(th->clt, (const char *)tmp, 2);
105 if (rc < 0) 102 if (rc < 0)
106 return rc; 103 return rc;
107 if (rc != 2) 104 if (rc != 2)
@@ -116,12 +113,12 @@ read_reg(struct thermostat* th, int reg)
116 int rc; 113 int rc;
117 114
118 reg_addr = (u8)reg; 115 reg_addr = (u8)reg;
119 rc = i2c_master_send(&th->clt, &reg_addr, 1); 116 rc = i2c_master_send(th->clt, &reg_addr, 1);
120 if (rc < 0) 117 if (rc < 0)
121 return rc; 118 return rc;
122 if (rc != 1) 119 if (rc != 1)
123 return -ENODEV; 120 return -ENODEV;
124 rc = i2c_master_recv(&th->clt, (char *)&data, 1); 121 rc = i2c_master_recv(th->clt, (char *)&data, 1);
125 if (rc < 0) 122 if (rc < 0)
126 return rc; 123 return rc;
127 return data; 124 return data;
@@ -131,26 +128,36 @@ static int
131attach_thermostat(struct i2c_adapter *adapter) 128attach_thermostat(struct i2c_adapter *adapter)
132{ 129{
133 unsigned long bus_no; 130 unsigned long bus_no;
131 struct i2c_board_info info;
132 struct i2c_client *client;
134 133
135 if (strncmp(adapter->name, "uni-n", 5)) 134 if (strncmp(adapter->name, "uni-n", 5))
136 return -ENODEV; 135 return -ENODEV;
137 bus_no = simple_strtoul(adapter->name + 6, NULL, 10); 136 bus_no = simple_strtoul(adapter->name + 6, NULL, 10);
138 if (bus_no != therm_bus) 137 if (bus_no != therm_bus)
139 return -ENODEV; 138 return -ENODEV;
140 return attach_one_thermostat(adapter, therm_address, bus_no); 139
140 memset(&info, 0, sizeof(struct i2c_board_info));
141 strlcpy(info.type, "therm_adt746x", I2C_NAME_SIZE);
142 info.addr = therm_address;
143 client = i2c_new_device(adapter, &info);
144 if (!client)
145 return -ENODEV;
146
147 /*
148 * Let i2c-core delete that device on driver removal.
149 * This is safe because i2c-core holds the core_lock mutex for us.
150 */
151 list_add_tail(&client->detected, &client->driver->clients);
152 return 0;
141} 153}
142 154
143static int 155static int
144detach_thermostat(struct i2c_adapter *adapter) 156remove_thermostat(struct i2c_client *client)
145{ 157{
146 struct thermostat* th; 158 struct thermostat *th = i2c_get_clientdata(client);
147 int i; 159 int i;
148 160
149 if (thermostat == NULL)
150 return 0;
151
152 th = thermostat;
153
154 if (thread_therm != NULL) { 161 if (thread_therm != NULL) {
155 kthread_stop(thread_therm); 162 kthread_stop(thread_therm);
156 } 163 }
@@ -166,8 +173,6 @@ detach_thermostat(struct i2c_adapter *adapter)
166 173
167 write_both_fan_speed(th, -1); 174 write_both_fan_speed(th, -1);
168 175
169 i2c_detach_client(&th->clt);
170
171 thermostat = NULL; 176 thermostat = NULL;
172 177
173 kfree(th); 178 kfree(th);
@@ -175,14 +180,6 @@ detach_thermostat(struct i2c_adapter *adapter)
175 return 0; 180 return 0;
176} 181}
177 182
178static struct i2c_driver thermostat_driver = {
179 .driver = {
180 .name = "therm_adt746x",
181 },
182 .attach_adapter = attach_thermostat,
183 .detach_adapter = detach_thermostat,
184};
185
186static int read_fan_speed(struct thermostat *th, u8 addr) 183static int read_fan_speed(struct thermostat *th, u8 addr)
187{ 184{
188 u8 tmp[2]; 185 u8 tmp[2];
@@ -371,8 +368,8 @@ static void set_limit(struct thermostat *th, int i)
371 th->limits[i] = default_limits_local[i] + limit_adjust; 368 th->limits[i] = default_limits_local[i] + limit_adjust;
372} 369}
373 370
374static int attach_one_thermostat(struct i2c_adapter *adapter, int addr, 371static int probe_thermostat(struct i2c_client *client,
375 int busno) 372 const struct i2c_device_id *id)
376{ 373{
377 struct thermostat* th; 374 struct thermostat* th;
378 int rc; 375 int rc;
@@ -385,16 +382,12 @@ static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
385 if (!th) 382 if (!th)
386 return -ENOMEM; 383 return -ENOMEM;
387 384
388 th->clt.addr = addr; 385 i2c_set_clientdata(client, th);
389 th->clt.adapter = adapter; 386 th->clt = client;
390 th->clt.driver = &thermostat_driver;
391 strcpy(th->clt.name, "thermostat");
392 387
393 rc = read_reg(th, 0); 388 rc = read_reg(th, 0);
394 if (rc < 0) { 389 if (rc < 0) {
395 printk(KERN_ERR "adt746x: Thermostat failed to read config " 390 dev_err(&client->dev, "Thermostat failed to read config!\n");
396 "from bus %d !\n",
397 busno);
398 kfree(th); 391 kfree(th);
399 return -ENODEV; 392 return -ENODEV;
400 } 393 }
@@ -423,14 +416,6 @@ static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
423 416
424 thermostat = th; 417 thermostat = th;
425 418
426 if (i2c_attach_client(&th->clt)) {
427 printk(KERN_INFO "adt746x: Thermostat failed to attach "
428 "client !\n");
429 thermostat = NULL;
430 kfree(th);
431 return -ENODEV;
432 }
433
434 /* be sure to really write fan speed the first time */ 419 /* be sure to really write fan speed the first time */
435 th->last_speed[0] = -2; 420 th->last_speed[0] = -2;
436 th->last_speed[1] = -2; 421 th->last_speed[1] = -2;
@@ -456,6 +441,21 @@ static int attach_one_thermostat(struct i2c_adapter *adapter, int addr,
456 return 0; 441 return 0;
457} 442}
458 443
444static const struct i2c_device_id therm_adt746x_id[] = {
445 { "therm_adt746x", 0 },
446 { }
447};
448
449static struct i2c_driver thermostat_driver = {
450 .driver = {
451 .name = "therm_adt746x",
452 },
453 .attach_adapter = attach_thermostat,
454 .probe = probe_thermostat,
455 .remove = remove_thermostat,
456 .id_table = therm_adt746x_id,
457};
458
459/* 459/*
460 * Now, unfortunately, sysfs doesn't give us a nice void * we could 460 * Now, unfortunately, sysfs doesn't give us a nice void * we could
461 * pass around to the attribute functions, so we don't really have 461 * pass around to the attribute functions, so we don't really have