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Commit 3522a09f authored by Michael Mogenson's avatar Michael Mogenson Committed by Greg Kroah-Hartman
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greybus: remove gb_i2c_retries_operation 



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: default avatarMichael Mogenson <michael.mogenson@leaflabs.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent e494b580

drivers/staging/greybus/greybus_protocols.h

+0 −8
Original line number Diff line number Diff line
@@ -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

drivers/staging/greybus/i2c.c

+2 −31
Original line number Diff line number Diff line
@@ -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");