Commit f065a93e authored by Jan Beulich's avatar Jan Beulich Committed by Guenter Roeck
Browse files

hwmon: (lm85) extend to support EMC6D103 chips 



The interface is identical EMC6D102, so all that needs to be added are
some definitions and their uses.

Registers apparently missing in EMC6D103S/EMC6D103:A2 compared to EMC6D103:A0,
EMC6D103:A1, and EMC6D102 (according to the data sheets), but used
unconditionally in the driver: 62[5:7], 6D[0:7], and 6E[0:7]. For that
reason, EMC6D103S chips don't get enabled for the time being.

Signed-off-by: default avatarJan Beulich <jbeulich@novell.com>
(Guenter Roeck: Replaced EMC6D103_A2 with EMC6D103S per EMC6D103S datasheet)
Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
Cc: stable@kernel.org
parent 4eb2abcd

drivers/hwmon/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -575,7 +575,7 @@ config SENSORS_LM85 
	help

	  If you say yes here you get support for National Semiconductor LM85

	  sensor chips and clones: ADM1027, ADT7463, ADT7468, EMC6D100,

	  EMC6D101 and EMC6D102.

	  EMC6D101, EMC6D102, and EMC6D103.



	  This driver can also be built as a module.  If so, the module

	  will be called lm85.

drivers/hwmon/lm85.c

+21 −2
Original line number Diff line number Diff line
@@ -41,7 +41,7 @@ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 
enum chips {

	any_chip, lm85b, lm85c,

	adm1027, adt7463, adt7468,

	emc6d100, emc6d102

	emc6d100, emc6d102, emc6d103

};



/* The LM85 registers */
@@ -90,6 +90,9 @@ enum chips { 
#define	LM85_VERSTEP_EMC6D100_A0        0x60

#define	LM85_VERSTEP_EMC6D100_A1        0x61

#define	LM85_VERSTEP_EMC6D102		0x65

#define	LM85_VERSTEP_EMC6D103_A0	0x68

#define	LM85_VERSTEP_EMC6D103_A1	0x69

#define	LM85_VERSTEP_EMC6D103S		0x6A	/* Also known as EMC6D103:A2 */



#define	LM85_REG_CONFIG			0x40
@@ -348,6 +351,7 @@ static const struct i2c_device_id lm85_id[] = { 
	{ "emc6d100", emc6d100 },

	{ "emc6d101", emc6d100 },

	{ "emc6d102", emc6d102 },

	{ "emc6d103", emc6d103 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, lm85_id);
@@ -1250,6 +1254,20 @@ static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info) 
		case LM85_VERSTEP_EMC6D102:

			type_name = "emc6d102";

			break;

		case LM85_VERSTEP_EMC6D103_A0:

		case LM85_VERSTEP_EMC6D103_A1:

			type_name = "emc6d103";

			break;

		/*

		 * Registers apparently missing in EMC6D103S/EMC6D103:A2

		 * compared to EMC6D103:A0, EMC6D103:A1, and EMC6D102

		 * (according to the data sheets), but used unconditionally

		 * in the driver: 62[5:7], 6D[0:7], and 6E[0:7].

		 * So skip EMC6D103S for now.

		case LM85_VERSTEP_EMC6D103S:

			type_name = "emc6d103s";

			break;

		 */

		}

	} else {

		dev_dbg(&adapter->dev,
@@ -1283,6 +1301,7 @@ static int lm85_probe(struct i2c_client *client, 
	case adt7468:

	case emc6d100:

	case emc6d102:

	case emc6d103:

		data->freq_map = adm1027_freq_map;

		break;

	default:
@@ -1468,7 +1487,7 @@ static struct lm85_data *lm85_update_device(struct device *dev) 
			/* More alarm bits */

			data->alarms |= lm85_read_value(client,

						EMC6D100_REG_ALARM3) << 16;

		} else if (data->type == emc6d102) {

		} else if (data->type == emc6d102 || data->type == emc6d103) {

			/* Have to read LSB bits after the MSB ones because

			   the reading of the MSB bits has frozen the

			   LSBs (backward from the ADM1027).

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