Merge branch 'mlxsw-next'

Petr Machata says:

====================
mlxsw: Provide enhancements and new feature

Vadim Pasternak writes:

Patch #1 - Optimize transaction size for efficient retrieval of module
           data.
Patch #3 - Enable thermal zone binding with new cooling device.
Patch #4 - Employ standard macros for dividing buffer into the chunks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/core_env.c

@@ -775,7 +775,7 @@ static int mlxsw_env_module_has_temp_sensor(struct mlxsw_core *mlxsw_core,
 	int err;
 
 	mlxsw_reg_mtbr_pack(mtbr_pl, slot_index,
-			    MLXSW_REG_MTBR_BASE_MODULE_INDEX + module, 1);
+			    MLXSW_REG_MTBR_BASE_MODULE_INDEX + module);
 	err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mtbr), mtbr_pl);
 	if (err)
 		return err;

drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c

@@ -293,7 +293,7 @@ static ssize_t mlxsw_hwmon_module_temp_fault_show(struct device *dev,
 
 	module = mlxsw_hwmon_attr->type_index - mlxsw_hwmon_dev->sensor_count;
 	mlxsw_reg_mtbr_pack(mtbr_pl, mlxsw_hwmon_dev->slot_index,
-			    MLXSW_REG_MTBR_BASE_MODULE_INDEX + module, 1);
+			    MLXSW_REG_MTBR_BASE_MODULE_INDEX + module);
 	err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtbr), mtbr_pl);
 	if (err) {
 		dev_err(dev, "Failed to query module temperature sensor\n");

drivers/net/ethernet/mellanox/mlxsw/core_thermal.c

@@ -31,6 +31,7 @@
 /* External cooling devices, allowed for binding to mlxsw thermal zones. */
 static char * const mlxsw_thermal_external_allowed_cdev[] = {
 	"mlxreg_fan",
+	"emc2305",
 };
 
 struct mlxsw_cooling_states {

drivers/net/ethernet/mellanox/mlxsw/i2c.c

@@ -424,9 +424,7 @@ mlxsw_i2c_cmd(struct device *dev, u16 opcode, u32 in_mod, size_t in_mbox_size,
 
 	if (in_mbox) {
 		reg_size = mlxsw_i2c_get_reg_size(in_mbox);
-		num = reg_size / mlxsw_i2c->block_size;
-		if (reg_size % mlxsw_i2c->block_size)
-			num++;
+		num = DIV_ROUND_UP(reg_size, mlxsw_i2c->block_size);
 
 		if (mutex_lock_interruptible(&mlxsw_i2c->cmd.lock) < 0) {
 			dev_err(&client->dev, "Could not acquire lock");

drivers/net/ethernet/mellanox/mlxsw/reg.h

@@ -9551,7 +9551,7 @@ MLXSW_ITEM_BIT_ARRAY(reg, mtwe, sensor_warning, 0x0, 0x10, 1);
 #define MLXSW_REG_MTBR_ID 0x900F
 #define MLXSW_REG_MTBR_BASE_LEN 0x10 /* base length, without records */
 #define MLXSW_REG_MTBR_REC_LEN 0x04 /* record length */
-#define MLXSW_REG_MTBR_REC_MAX_COUNT 47 /* firmware limitation */
+#define MLXSW_REG_MTBR_REC_MAX_COUNT 1
 #define MLXSW_REG_MTBR_LEN (MLXSW_REG_MTBR_BASE_LEN +	\
 			    MLXSW_REG_MTBR_REC_LEN *	\
 			    MLXSW_REG_MTBR_REC_MAX_COUNT)
@@ -9597,12 +9597,12 @@ MLXSW_ITEM32_INDEXED(reg, mtbr, rec_temp, MLXSW_REG_MTBR_BASE_LEN, 0, 16,
 		     MLXSW_REG_MTBR_REC_LEN, 0x00, false);
 
 static inline void mlxsw_reg_mtbr_pack(char *payload, u8 slot_index,
-				       u16 base_sensor_index, u8 num_rec)
+				       u16 base_sensor_index)
 {
 	MLXSW_REG_ZERO(mtbr, payload);
 	mlxsw_reg_mtbr_slot_index_set(payload, slot_index);
 	mlxsw_reg_mtbr_base_sensor_index_set(payload, base_sensor_index);
-	mlxsw_reg_mtbr_num_rec_set(payload, num_rec);
+	mlxsw_reg_mtbr_num_rec_set(payload, 1);
 }
 
 /* Error codes from temperatute reading */