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greybus: remove gb_i2c_timeout_operation

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Set timeout operation was removed from the Greybus specification. Remove
gb_i2c_timeout_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 16:23:11 -05:00 committed by Greg Kroah-Hartman
parent c7733b6167
commit e494b580ea
2 changed files with 4 additions and 34 deletions
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7
drivers/staging/greybus/greybus_protocols.h
View file

@ -495,23 +495,16 @@ struct gb_hid_input_report_request {
/* Greybus i2c request types */
#define GB_I2C_TYPE_FUNCTIONALITY 0x02
#define GB_I2C_TYPE_TIMEOUT 0x03
#define GB_I2C_TYPE_RETRIES 0x04
#define GB_I2C_TYPE_TRANSFER 0x05
#define GB_I2C_RETRIES_DEFAULT 3
#define GB_I2C_TIMEOUT_DEFAULT 1000 /* milliseconds */
/* functionality request has no payload */
struct gb_i2c_functionality_response {
__le32 functionality;
} __packed;
struct gb_i2c_timeout_request {
__le16 msec;
} __packed;
/* timeout response has no payload */
struct gb_i2c_retries_request {
__u8 retries;
} __packed;

31
drivers/staging/greybus/i2c.c
View file

@ -18,7 +18,6 @@ struct gb_i2c_device {
struct gb_connection *connection;
u32 functionality;
u16 timeout_msec;
u8 retries;
struct i2c_adapter adapter;
@ -50,23 +49,6 @@ static int gb_i2c_functionality_operation(struct gb_i2c_device *gb_i2c_dev)
return 0;
}
static int gb_i2c_timeout_operation(struct gb_i2c_device *gb_i2c_dev, u16 msec)
{
struct device *dev = &gb_i2c_dev->connection->bundle->dev;
struct gb_i2c_timeout_request request;
int ret;
request.msec = cpu_to_le16(msec);
ret = gb_operation_sync(gb_i2c_dev->connection, GB_I2C_TYPE_TIMEOUT,
&request, sizeof(request), NULL, 0);
if (ret)
dev_err(dev, "timeout operation failed (%d)\n", ret);
else
gb_i2c_dev->timeout_msec = msec;
return ret;
}
static int gb_i2c_retries_operation(struct gb_i2c_device *gb_i2c_dev,
u8 retries)
{
@ -267,8 +249,8 @@ 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 and timeout.
* If that's OK, we get and cached its functionality bits and
* set up the retry count.
*
* Note: gb_i2c_dev->connection is assumed to have been valid.
*/
@ -281,12 +263,8 @@ static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev)
if (ret)
return ret;
/* Set up our default retry count and timeout */
ret = gb_i2c_retries_operation(gb_i2c_dev, GB_I2C_RETRIES_DEFAULT);
if (ret)
return ret;
return gb_i2c_timeout_operation(gb_i2c_dev, GB_I2C_TIMEOUT_DEFAULT);
/* Set up our default retry count */
return gb_i2c_retries_operation(gb_i2c_dev, GB_I2C_RETRIES_DEFAULT);
}
static int gb_i2c_connection_init(struct gb_connection *connection)
@ -312,7 +290,6 @@ 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->timeout = gb_i2c_dev->timeout_msec * HZ / 1000;
adapter->retries = gb_i2c_dev->retries;
adapter->dev.parent = &connection->bundle->dev;