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authorHeiner Kallweit <hkallweit1@gmail.com>2017-11-28 21:51:47 +0100
committerBartosz Golaszewski <brgl@bgdev.pl>2018-01-01 19:40:46 +0100
commitd4297d6795779b0713203787eada5b8d9f0ce065 (patch)
tree4a46cfe656f93409d0d094fc67649a12bce78259 /drivers/misc
parent8e5888e17f48d983eee27bd3ebf36fd03c8bb1e5 (diff)
eeprom: at24: remove old write functions
Remove the old and now unused write functions. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/eeprom/at24.c117
1 files changed, 0 insertions, 117 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index fa712279183b..5f7d81054c11 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -64,11 +64,8 @@ struct at24_client {
struct at24_data {
struct at24_platform_data chip;
int use_smbus;
- int use_smbus_write;
ssize_t (*read_func)(struct at24_data *, char *, unsigned int, size_t);
- ssize_t (*write_func)(struct at24_data *,
- const char *, unsigned int, size_t);
/*
* Lock protects against activities from other Linux tasks,
@@ -76,7 +73,6 @@ struct at24_data {
*/
struct mutex lock;
- u8 *writebuf;
unsigned write_max;
unsigned num_addresses;
@@ -482,62 +478,6 @@ static size_t at24_adjust_write_count(struct at24_data *at24,
return count;
}
-static ssize_t at24_eeprom_write_smbus_block(struct at24_data *at24,
- const char *buf,
- unsigned int offset, size_t count)
-{
- unsigned long timeout, write_time;
- struct at24_client *at24_client;
- struct i2c_client *client;
- ssize_t status = 0;
-
- at24_client = at24_translate_offset(at24, &offset);
- client = at24_client->client;
- count = at24_adjust_write_count(at24, offset, count);
-
- loop_until_timeout(timeout, write_time) {
- status = i2c_smbus_write_i2c_block_data(client,
- offset, count, buf);
- if (status == 0)
- status = count;
-
- dev_dbg(&client->dev, "write %zu@%d --> %zd (%ld)\n",
- count, offset, status, jiffies);
-
- if (status == count)
- return count;
- }
-
- return -ETIMEDOUT;
-}
-
-static ssize_t at24_eeprom_write_smbus_byte(struct at24_data *at24,
- const char *buf,
- unsigned int offset, size_t count)
-{
- unsigned long timeout, write_time;
- struct at24_client *at24_client;
- struct i2c_client *client;
- ssize_t status = 0;
-
- at24_client = at24_translate_offset(at24, &offset);
- client = at24_client->client;
-
- loop_until_timeout(timeout, write_time) {
- status = i2c_smbus_write_byte_data(client, offset, buf[0]);
- if (status == 0)
- status = count;
-
- dev_dbg(&client->dev, "write %zu@%d --> %zd (%ld)\n",
- count, offset, status, jiffies);
-
- if (status == count)
- return count;
- }
-
- return -ETIMEDOUT;
-}
-
static ssize_t at24_regmap_write(struct at24_data *at24, const char *buf,
unsigned int offset, size_t count)
{
@@ -563,47 +503,6 @@ static ssize_t at24_regmap_write(struct at24_data *at24, const char *buf,
return -ETIMEDOUT;
}
-static ssize_t at24_eeprom_write_i2c(struct at24_data *at24, const char *buf,
- unsigned int offset, size_t count)
-{
- unsigned long timeout, write_time;
- struct at24_client *at24_client;
- struct i2c_client *client;
- struct i2c_msg msg;
- ssize_t status = 0;
- int i = 0;
-
- at24_client = at24_translate_offset(at24, &offset);
- client = at24_client->client;
- count = at24_adjust_write_count(at24, offset, count);
-
- msg.addr = client->addr;
- msg.flags = 0;
-
- /* msg.buf is u8 and casts will mask the values */
- msg.buf = at24->writebuf;
- if (at24->chip.flags & AT24_FLAG_ADDR16)
- msg.buf[i++] = offset >> 8;
-
- msg.buf[i++] = offset;
- memcpy(&msg.buf[i], buf, count);
- msg.len = i + count;
-
- loop_until_timeout(timeout, write_time) {
- status = i2c_transfer(client->adapter, &msg, 1);
- if (status == 1)
- status = count;
-
- dev_dbg(&client->dev, "write %zu@%d --> %zd (%ld)\n",
- count, offset, status, jiffies);
-
- if (status == count)
- return count;
- }
-
- return -ETIMEDOUT;
-}
-
static int at24_read(void *priv, unsigned int off, void *val, size_t count)
{
struct at24_data *at24 = priv;
@@ -845,7 +744,6 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
mutex_init(&at24->lock);
at24->use_smbus = use_smbus;
- at24->use_smbus_write = use_smbus_write;
at24->chip = chip;
at24->num_addresses = num_addresses;
@@ -869,15 +767,6 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
: at24_eeprom_read_i2c;
}
- if (at24->use_smbus) {
- if (at24->use_smbus_write == I2C_SMBUS_I2C_BLOCK_DATA)
- at24->write_func = at24_eeprom_write_smbus_block;
- else
- at24->write_func = at24_eeprom_write_smbus_byte;
- } else {
- at24->write_func = at24_eeprom_write_i2c;
- }
-
writable = !(chip.flags & AT24_FLAG_READONLY);
if (writable) {
if (!use_smbus || use_smbus_write) {
@@ -889,12 +778,6 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (use_smbus && write_max > I2C_SMBUS_BLOCK_MAX)
write_max = I2C_SMBUS_BLOCK_MAX;
at24->write_max = write_max;
-
- /* buffer (data + address at the beginning) */
- at24->writebuf = devm_kzalloc(&client->dev,
- write_max + 2, GFP_KERNEL);
- if (!at24->writebuf)
- return -ENOMEM;
} else {
dev_warn(&client->dev,
"cannot write due to controller restrictions.");

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