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greybus: remove gb_i2c_retries_operation

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Set retries operation was removed from the Greybus specification. Remove
gb_i2c_retries_operation and all other no longer necessary code bits from the
Greybus kernel code.

Signed-off-by: Michael Mogenson <michael.mogenson@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Michael Mogenson 2016-03-03 16:23:12 -05:00 committed by Greg Kroah-Hartman
parent e494b580ea
commit 3522a09fa7
2 changed files with 2 additions and 39 deletions
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8
drivers/staging/greybus/greybus_protocols.h
View file

@ -495,21 +495,13 @@ struct gb_hid_input_report_request {
/* Greybus i2c request types */
#define GB_I2C_TYPE_FUNCTIONALITY 0x02
#define GB_I2C_TYPE_RETRIES 0x04
#define GB_I2C_TYPE_TRANSFER 0x05
#define GB_I2C_RETRIES_DEFAULT 3
/* functionality request has no payload */
struct gb_i2c_functionality_response {
__le32 functionality;
} __packed;
struct gb_i2c_retries_request {
__u8 retries;
} __packed;
/* retries response has no payload */
/*
* Outgoing data immediately follows the op count and ops array.
* The data for each write (master -> slave) op in the array is sent

33
drivers/staging/greybus/i2c.c
View file

@ -18,7 +18,6 @@ struct gb_i2c_device {
struct gb_connection *connection;
u32 functionality;
u8 retries;
struct i2c_adapter adapter;
};
@ -49,25 +48,6 @@ static int gb_i2c_functionality_operation(struct gb_i2c_device *gb_i2c_dev)
return 0;
}
static int gb_i2c_retries_operation(struct gb_i2c_device *gb_i2c_dev,
u8 retries)
{
struct device *dev = &gb_i2c_dev->connection->bundle->dev;
struct gb_i2c_retries_request request;
int ret;
request.retries = retries;
ret = gb_operation_sync(gb_i2c_dev->connection, GB_I2C_TYPE_RETRIES,
&request, sizeof(request), NULL, 0);
if (ret)
dev_err(dev, "retries operation failed (%d)\n", ret);
else
gb_i2c_dev->retries = retries;
return ret;
}
/*
* Map Linux i2c_msg flags into Greybus i2c transfer op flags.
*/
@ -249,22 +229,14 @@ static const struct i2c_algorithm gb_i2c_algorithm = {
/*
* Do initial setup of the i2c device. This includes verifying we
* can support it (based on the protocol version it advertises).
* If that's OK, we get and cached its functionality bits and
* set up the retry count.
* If that's OK, we get and cached its functionality bits.
*
* Note: gb_i2c_dev->connection is assumed to have been valid.
*/
static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev)
{
int ret;
/* Assume the functionality never changes, just get it once */
ret = gb_i2c_functionality_operation(gb_i2c_dev);
if (ret)
return ret;
/* Set up our default retry count */
return gb_i2c_retries_operation(gb_i2c_dev, GB_I2C_RETRIES_DEFAULT);
return gb_i2c_functionality_operation(gb_i2c_dev);
}
static int gb_i2c_connection_init(struct gb_connection *connection)
@ -290,7 +262,6 @@ static int gb_i2c_connection_init(struct gb_connection *connection)
adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
adapter->algo = &gb_i2c_algorithm;
/* adapter->algo_data = what? */
adapter->retries = gb_i2c_dev->retries;
adapter->dev.parent = &connection->bundle->dev;
snprintf(adapter->name, sizeof(adapter->name), "Greybus i2c adapter");