diff options
-rw-r--r-- | Documentation/misc-devices/max6875 | 6 | ||||
-rw-r--r-- | drivers/misc/eeprom/max6875.c | 29 |
2 files changed, 9 insertions, 26 deletions
diff --git a/Documentation/misc-devices/max6875 b/Documentation/misc-devices/max6875 index 10ca43cd1a72..1e89ee3ccc1b 100644 --- a/Documentation/misc-devices/max6875 +++ b/Documentation/misc-devices/max6875 | |||
@@ -42,10 +42,12 @@ General Remarks | |||
42 | 42 | ||
43 | Valid addresses for the MAX6875 are 0x50 and 0x52. | 43 | Valid addresses for the MAX6875 are 0x50 and 0x52. |
44 | Valid addresses for the MAX6874 are 0x50, 0x52, 0x54 and 0x56. | 44 | Valid addresses for the MAX6874 are 0x50, 0x52, 0x54 and 0x56. |
45 | The driver does not probe any address, so you must force the address. | 45 | The driver does not probe any address, so you explicitly instantiate the |
46 | devices. | ||
46 | 47 | ||
47 | Example: | 48 | Example: |
48 | $ modprobe max6875 force=0,0x50 | 49 | $ modprobe max6875 |
50 | $ echo max6875 0x50 > /sys/bus/i2c/devices/i2c-0/new_device | ||
49 | 51 | ||
50 | The MAX6874/MAX6875 ignores address bit 0, so this driver attaches to multiple | 52 | The MAX6874/MAX6875 ignores address bit 0, so this driver attaches to multiple |
51 | addresses. For example, for address 0x50, it also reserves 0x51. | 53 | addresses. For example, for address 0x50, it also reserves 0x51. |
diff --git a/drivers/misc/eeprom/max6875.c b/drivers/misc/eeprom/max6875.c index 3c0c58eed347..5a6b2bce8ad5 100644 --- a/drivers/misc/eeprom/max6875.c +++ b/drivers/misc/eeprom/max6875.c | |||
@@ -33,12 +33,6 @@ | |||
33 | #include <linux/i2c.h> | 33 | #include <linux/i2c.h> |
34 | #include <linux/mutex.h> | 34 | #include <linux/mutex.h> |
35 | 35 | ||
36 | /* Do not scan - the MAX6875 access method will write to some EEPROM chips */ | ||
37 | static const unsigned short normal_i2c[] = { I2C_CLIENT_END }; | ||
38 | |||
39 | /* Insmod parameters */ | ||
40 | I2C_CLIENT_INSMOD_1(max6875); | ||
41 | |||
42 | /* The MAX6875 can only read/write 16 bytes at a time */ | 36 | /* The MAX6875 can only read/write 16 bytes at a time */ |
43 | #define SLICE_SIZE 16 | 37 | #define SLICE_SIZE 16 |
44 | #define SLICE_BITS 4 | 38 | #define SLICE_BITS 4 |
@@ -146,31 +140,21 @@ static struct bin_attribute user_eeprom_attr = { | |||
146 | .read = max6875_read, | 140 | .read = max6875_read, |
147 | }; | 141 | }; |
148 | 142 | ||
149 | /* Return 0 if detection is successful, -ENODEV otherwise */ | 143 | static int max6875_probe(struct i2c_client *client, |
150 | static int max6875_detect(struct i2c_client *client, int kind, | 144 | const struct i2c_device_id *id) |
151 | struct i2c_board_info *info) | ||
152 | { | 145 | { |
153 | struct i2c_adapter *adapter = client->adapter; | 146 | struct i2c_adapter *adapter = client->adapter; |
147 | struct max6875_data *data; | ||
148 | int err; | ||
154 | 149 | ||
155 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE_DATA | 150 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE_DATA |
156 | | I2C_FUNC_SMBUS_READ_BYTE)) | 151 | | I2C_FUNC_SMBUS_READ_BYTE)) |
157 | return -ENODEV; | 152 | return -ENODEV; |
158 | 153 | ||
159 | /* Only check even addresses */ | 154 | /* Only bind to even addresses */ |
160 | if (client->addr & 1) | 155 | if (client->addr & 1) |
161 | return -ENODEV; | 156 | return -ENODEV; |
162 | 157 | ||
163 | strlcpy(info->type, "max6875", I2C_NAME_SIZE); | ||
164 | |||
165 | return 0; | ||
166 | } | ||
167 | |||
168 | static int max6875_probe(struct i2c_client *client, | ||
169 | const struct i2c_device_id *id) | ||
170 | { | ||
171 | struct max6875_data *data; | ||
172 | int err; | ||
173 | |||
174 | if (!(data = kzalloc(sizeof(struct max6875_data), GFP_KERNEL))) | 158 | if (!(data = kzalloc(sizeof(struct max6875_data), GFP_KERNEL))) |
175 | return -ENOMEM; | 159 | return -ENOMEM; |
176 | 160 | ||
@@ -222,9 +206,6 @@ static struct i2c_driver max6875_driver = { | |||
222 | .probe = max6875_probe, | 206 | .probe = max6875_probe, |
223 | .remove = max6875_remove, | 207 | .remove = max6875_remove, |
224 | .id_table = max6875_id, | 208 | .id_table = max6875_id, |
225 | |||
226 | .detect = max6875_detect, | ||
227 | .address_data = &addr_data, | ||
228 | }; | 209 | }; |
229 | 210 | ||
230 | static int __init max6875_init(void) | 211 | static int __init max6875_init(void) |