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IB/hfi1: Use built-in i2c bit-shift bus adapter

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Use built-in i2c bit-shift bus adapter to control the
i2c busses on the chip.

Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dean Luick
2016-07-06 17:28:52 -04:00
committed by Doug Ledford
parent b094a36f90
commit dba715f0c8
6 changed files with 340 additions and 114 deletions
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11
drivers/infiniband/hw/hfi1/hfi.h
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@@ -62,6 +62,8 @@
#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <rdma/rdma_vt.h>
#include "chip_registers.h"
@@ -805,10 +807,19 @@ struct hfi1_temp {
u8 triggers; /* temperature triggers */
};
struct hfi1_i2c_bus {
struct hfi1_devdata *controlling_dd; /* current controlling device */
struct i2c_adapter adapter; /* bus details */
struct i2c_algo_bit_data algo; /* bus algorithm details */
int num; /* bus number, 0 or 1 */
};
/* common data between shared ASIC HFIs */
struct hfi1_asic_data {
struct hfi1_devdata *dds[2]; /* back pointers */
struct mutex asic_resource_mutex;
struct hfi1_i2c_bus *i2c_bus0;
struct hfi1_i2c_bus *i2c_bus1;
};
/* device data struct now contains only "general per-device" info.