diff options
Diffstat (limited to 'drivers/hwmon/w83l785ts.c')
-rw-r--r-- | drivers/hwmon/w83l785ts.c | 82 |
1 files changed, 26 insertions, 56 deletions
diff --git a/drivers/hwmon/w83l785ts.c b/drivers/hwmon/w83l785ts.c index ea295b9fc4f4..20781def65ed 100644 --- a/drivers/hwmon/w83l785ts.c +++ b/drivers/hwmon/w83l785ts.c | |||
@@ -1,7 +1,7 @@ | |||
1 | /* | 1 | /* |
2 | * w83l785ts.c - Part of lm_sensors, Linux kernel modules for hardware | 2 | * w83l785ts.c - Part of lm_sensors, Linux kernel modules for hardware |
3 | * monitoring | 3 | * monitoring |
4 | * Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org> | 4 | * Copyright (C) 2003-2009 Jean Delvare <khali@linux-fr.org> |
5 | * | 5 | * |
6 | * Inspired from the lm83 driver. The W83L785TS-S is a sensor chip made | 6 | * Inspired from the lm83 driver. The W83L785TS-S is a sensor chip made |
7 | * by Winbond. It reports a single external temperature with a 1 deg | 7 | * by Winbond. It reports a single external temperature with a 1 deg |
@@ -52,12 +52,6 @@ | |||
52 | static const unsigned short normal_i2c[] = { 0x2e, I2C_CLIENT_END }; | 52 | static const unsigned short normal_i2c[] = { 0x2e, I2C_CLIENT_END }; |
53 | 53 | ||
54 | /* | 54 | /* |
55 | * Insmod parameters | ||
56 | */ | ||
57 | |||
58 | I2C_CLIENT_INSMOD_1(w83l785ts); | ||
59 | |||
60 | /* | ||
61 | * The W83L785TS-S registers | 55 | * The W83L785TS-S registers |
62 | * Manufacturer ID is 0x5CA3 for Winbond. | 56 | * Manufacturer ID is 0x5CA3 for Winbond. |
63 | */ | 57 | */ |
@@ -83,7 +77,7 @@ I2C_CLIENT_INSMOD_1(w83l785ts); | |||
83 | 77 | ||
84 | static int w83l785ts_probe(struct i2c_client *client, | 78 | static int w83l785ts_probe(struct i2c_client *client, |
85 | const struct i2c_device_id *id); | 79 | const struct i2c_device_id *id); |
86 | static int w83l785ts_detect(struct i2c_client *client, int kind, | 80 | static int w83l785ts_detect(struct i2c_client *client, |
87 | struct i2c_board_info *info); | 81 | struct i2c_board_info *info); |
88 | static int w83l785ts_remove(struct i2c_client *client); | 82 | static int w83l785ts_remove(struct i2c_client *client); |
89 | static u8 w83l785ts_read_value(struct i2c_client *client, u8 reg, u8 defval); | 83 | static u8 w83l785ts_read_value(struct i2c_client *client, u8 reg, u8 defval); |
@@ -94,7 +88,7 @@ static struct w83l785ts_data *w83l785ts_update_device(struct device *dev); | |||
94 | */ | 88 | */ |
95 | 89 | ||
96 | static const struct i2c_device_id w83l785ts_id[] = { | 90 | static const struct i2c_device_id w83l785ts_id[] = { |
97 | { "w83l785ts", w83l785ts }, | 91 | { "w83l785ts", 0 }, |
98 | { } | 92 | { } |
99 | }; | 93 | }; |
100 | MODULE_DEVICE_TABLE(i2c, w83l785ts_id); | 94 | MODULE_DEVICE_TABLE(i2c, w83l785ts_id); |
@@ -108,7 +102,7 @@ static struct i2c_driver w83l785ts_driver = { | |||
108 | .remove = w83l785ts_remove, | 102 | .remove = w83l785ts_remove, |
109 | .id_table = w83l785ts_id, | 103 | .id_table = w83l785ts_id, |
110 | .detect = w83l785ts_detect, | 104 | .detect = w83l785ts_detect, |
111 | .address_data = &addr_data, | 105 | .address_list = normal_i2c, |
112 | }; | 106 | }; |
113 | 107 | ||
114 | /* | 108 | /* |
@@ -146,60 +140,36 @@ static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 1); | |||
146 | */ | 140 | */ |
147 | 141 | ||
148 | /* Return 0 if detection is successful, -ENODEV otherwise */ | 142 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
149 | static int w83l785ts_detect(struct i2c_client *new_client, int kind, | 143 | static int w83l785ts_detect(struct i2c_client *client, |
150 | struct i2c_board_info *info) | 144 | struct i2c_board_info *info) |
151 | { | 145 | { |
152 | struct i2c_adapter *adapter = new_client->adapter; | 146 | struct i2c_adapter *adapter = client->adapter; |
147 | u16 man_id; | ||
148 | u8 chip_id; | ||
153 | 149 | ||
154 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | 150 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
155 | return -ENODEV; | 151 | return -ENODEV; |
156 | 152 | ||
157 | /* | 153 | /* detection */ |
158 | * Now we do the remaining detection. A negative kind means that | 154 | if ((w83l785ts_read_value(client, W83L785TS_REG_CONFIG, 0) & 0x80) |
159 | * the driver was loaded with no force parameter (default), so we | 155 | || (w83l785ts_read_value(client, W83L785TS_REG_TYPE, 0) & 0xFC)) { |
160 | * must both detect and identify the chip (actually there is only | 156 | dev_dbg(&adapter->dev, |
161 | * one possible kind of chip for now, W83L785TS-S). A zero kind means | 157 | "W83L785TS-S detection failed at 0x%02x\n", |
162 | * that the driver was loaded with the force parameter, the detection | 158 | client->addr); |
163 | * step shall be skipped. A positive kind means that the driver | 159 | return -ENODEV; |
164 | * was loaded with the force parameter and a given kind of chip is | ||
165 | * requested, so both the detection and the identification steps | ||
166 | * are skipped. | ||
167 | */ | ||
168 | if (kind < 0) { /* detection */ | ||
169 | if (((w83l785ts_read_value(new_client, | ||
170 | W83L785TS_REG_CONFIG, 0) & 0x80) != 0x00) | ||
171 | || ((w83l785ts_read_value(new_client, | ||
172 | W83L785TS_REG_TYPE, 0) & 0xFC) != 0x00)) { | ||
173 | dev_dbg(&adapter->dev, | ||
174 | "W83L785TS-S detection failed at 0x%02x.\n", | ||
175 | new_client->addr); | ||
176 | return -ENODEV; | ||
177 | } | ||
178 | } | 160 | } |
179 | 161 | ||
180 | if (kind <= 0) { /* identification */ | 162 | /* Identification */ |
181 | u16 man_id; | 163 | man_id = (w83l785ts_read_value(client, W83L785TS_REG_MAN_ID1, 0) << 8) |
182 | u8 chip_id; | 164 | + w83l785ts_read_value(client, W83L785TS_REG_MAN_ID2, 0); |
183 | 165 | chip_id = w83l785ts_read_value(client, W83L785TS_REG_CHIP_ID, 0); | |
184 | man_id = (w83l785ts_read_value(new_client, | 166 | |
185 | W83L785TS_REG_MAN_ID1, 0) << 8) + | 167 | if (man_id != 0x5CA3 /* Winbond */ |
186 | w83l785ts_read_value(new_client, | 168 | || chip_id != 0x70) { /* W83L785TS-S */ |
187 | W83L785TS_REG_MAN_ID2, 0); | 169 | dev_dbg(&adapter->dev, |
188 | chip_id = w83l785ts_read_value(new_client, | 170 | "Unsupported chip (man_id=0x%04X, chip_id=0x%02X)\n", |
189 | W83L785TS_REG_CHIP_ID, 0); | 171 | man_id, chip_id); |
190 | 172 | return -ENODEV; | |
191 | if (man_id == 0x5CA3) { /* Winbond */ | ||
192 | if (chip_id == 0x70) { /* W83L785TS-S */ | ||
193 | kind = w83l785ts; | ||
194 | } | ||
195 | } | ||
196 | |||
197 | if (kind <= 0) { /* identification failed */ | ||
198 | dev_info(&adapter->dev, | ||
199 | "Unsupported chip (man_id=0x%04X, " | ||
200 | "chip_id=0x%02X).\n", man_id, chip_id); | ||
201 | return -ENODEV; | ||
202 | } | ||
203 | } | 173 | } |
204 | 174 | ||
205 | strlcpy(info->type, "w83l785ts", I2C_NAME_SIZE); | 175 | strlcpy(info->type, "w83l785ts", I2C_NAME_SIZE); |