From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/staging/greybus/i2c.c | 57 ++++++++++++++++++---------------------------------------
1 files changed, 18 insertions(+), 39 deletions(-)
diff --git a/kernel/drivers/staging/greybus/i2c.c b/kernel/drivers/staging/greybus/i2c.c
index 58a37de..de2f651 100644
--- a/kernel/drivers/staging/greybus/i2c.c
+++ b/kernel/drivers/staging/greybus/i2c.c
@@ -10,8 +10,8 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
+#include <linux/greybus.h>
-#include "greybus.h"
#include "gbphy.h"
struct gb_i2c_device {
@@ -31,7 +31,14 @@
return gb_i2c_functionality; /* All bits the same for now */
}
-static int gb_i2c_functionality_operation(struct gb_i2c_device *gb_i2c_dev)
+/*
+ * 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.
+ *
+ * Note: gb_i2c_dev->connection is assumed to have been valid.
+ */
+static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev)
{
struct gb_i2c_functionality_response response;
u32 functionality;
@@ -107,7 +114,7 @@
/* Response consists only of incoming data */
operation = gb_operation_create(connection, GB_I2C_TYPE_TRANSFER,
- request_size, data_in_size, GFP_KERNEL);
+ request_size, data_in_size, GFP_KERNEL);
if (!operation)
return NULL;
@@ -137,7 +144,7 @@
}
static void gb_i2c_decode_response(struct i2c_msg *msgs, u32 msg_count,
- struct gb_i2c_transfer_response *response)
+ struct gb_i2c_transfer_response *response)
{
struct i2c_msg *msg = msgs;
u8 *data;
@@ -164,7 +171,7 @@
}
static int gb_i2c_transfer_operation(struct gb_i2c_device *gb_i2c_dev,
- struct i2c_msg *msgs, u32 msg_count)
+ struct i2c_msg *msgs, u32 msg_count)
{
struct gb_connection *connection = gb_i2c_dev->connection;
struct device *dev = &gb_i2c_dev->gbphy_dev->dev;
@@ -199,7 +206,7 @@
}
static int gb_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
- int msg_count)
+ int msg_count)
{
struct gb_i2c_device *gb_i2c_dev;
@@ -207,20 +214,6 @@
return gb_i2c_transfer_operation(gb_i2c_dev, msgs, msg_count);
}
-
-#if 0
-/* Later */
-static int gb_i2c_smbus_xfer(struct i2c_adapter *adap,
- u16 addr, unsigned short flags, char read_write,
- u8 command, int size, union i2c_smbus_data *data)
-{
- struct gb_i2c_device *gb_i2c_dev;
-
- gb_i2c_dev = i2c_get_adapdata(adap);
-
- return 0;
-}
-#endif
static u32 gb_i2c_functionality(struct i2c_adapter *adap)
{
@@ -231,25 +224,11 @@
static const struct i2c_algorithm gb_i2c_algorithm = {
.master_xfer = gb_i2c_master_xfer,
- /* .smbus_xfer = gb_i2c_smbus_xfer, */
.functionality = gb_i2c_functionality,
};
-/*
- * 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.
- *
- * Note: gb_i2c_dev->connection is assumed to have been valid.
- */
-static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev)
-{
- /* Assume the functionality never changes, just get it once */
- return gb_i2c_functionality_operation(gb_i2c_dev);
-}
-
static int gb_i2c_probe(struct gbphy_device *gbphy_dev,
- const struct gbphy_device_id *id)
+ const struct gbphy_device_id *id)
{
struct gb_connection *connection;
struct gb_i2c_device *gb_i2c_dev;
@@ -260,9 +239,10 @@
if (!gb_i2c_dev)
return -ENOMEM;
- connection = gb_connection_create(gbphy_dev->bundle,
- le16_to_cpu(gbphy_dev->cport_desc->id),
- NULL);
+ connection =
+ gb_connection_create(gbphy_dev->bundle,
+ le16_to_cpu(gbphy_dev->cport_desc->id),
+ NULL);
if (IS_ERR(connection)) {
ret = PTR_ERR(connection);
goto exit_i2cdev_free;
@@ -286,7 +266,6 @@
adapter->owner = THIS_MODULE;
adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
adapter->algo = &gb_i2c_algorithm;
- /* adapter->algo_data = what? */
adapter->dev.parent = &gbphy_dev->dev;
snprintf(adapter->name, sizeof(adapter->name), "Greybus i2c adapter");
--
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