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Message-Id: <20190126173402.12428-3-shreeya.patel23498@gmail.com>
Date: Sat, 26 Jan 2019 23:04:01 +0530
From: Shreeya Patel <shreeya.patel23498@...il.com>
To: lars@...afoo.de, Michael.Hennerich@...log.com, jic23@...nel.org,
knaack.h@....de, pmeerw@...erw.net, gregkh@...uxfoundation.org,
linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org, jeremyfertic@...il.com,
shreeya.patel23498@...il.com
Subject: [PATCH v4 2/3] Staging: iio: adt7316: Remove multi read and write functions
Currently, adt7316 doesn't use multi read and multi write
functions hence remove the redundant code and make the
necessary changes in the code.
Signed-off-by: Shreeya Patel <shreeya.patel23498@...il.com>
---
drivers/staging/iio/addac/adt7316-i2c.c | 40 -------------------------
drivers/staging/iio/addac/adt7316-spi.c | 31 ++++---------------
drivers/staging/iio/addac/adt7316.h | 2 --
3 files changed, 6 insertions(+), 67 deletions(-)
diff --git a/drivers/staging/iio/addac/adt7316-i2c.c b/drivers/staging/iio/addac/adt7316-i2c.c
index 9dfe3be21849..167eafe3dd8c 100644
--- a/drivers/staging/iio/addac/adt7316-i2c.c
+++ b/drivers/staging/iio/addac/adt7316-i2c.c
@@ -52,44 +52,6 @@ static int adt7316_i2c_write(void *client, u8 reg, u8 data)
return ret;
}
-static int adt7316_i2c_multi_read(void *client, u8 reg, u8 count, u8 *data)
-{
- struct i2c_client *cl = client;
- int i, ret;
-
- if (count > ADT7316_REG_MAX_ADDR)
- count = ADT7316_REG_MAX_ADDR;
-
- for (i = 0; i < count; i++) {
- ret = adt7316_i2c_read(cl, reg, &data[i]);
- if (ret < 0) {
- dev_err(&cl->dev, "I2C multi read error\n");
- return ret;
- }
- }
-
- return 0;
-}
-
-static int adt7316_i2c_multi_write(void *client, u8 reg, u8 count, u8 *data)
-{
- struct i2c_client *cl = client;
- int i, ret;
-
- if (count > ADT7316_REG_MAX_ADDR)
- count = ADT7316_REG_MAX_ADDR;
-
- for (i = 0; i < count; i++) {
- ret = adt7316_i2c_write(cl, reg, data[i]);
- if (ret < 0) {
- dev_err(&cl->dev, "I2C multi write error\n");
- return ret;
- }
- }
-
- return 0;
-}
-
/*
* device probe and remove
*/
@@ -101,8 +63,6 @@ static int adt7316_i2c_probe(struct i2c_client *client,
.client = client,
.read = adt7316_i2c_read,
.write = adt7316_i2c_write,
- .multi_read = adt7316_i2c_multi_read,
- .multi_write = adt7316_i2c_multi_write,
};
return adt7316_probe(&client->dev, &bus, id->name, client->irq);
diff --git a/drivers/staging/iio/addac/adt7316-spi.c b/drivers/staging/iio/addac/adt7316-spi.c
index ec4848acec9f..06c943c2cc01 100644
--- a/drivers/staging/iio/addac/adt7316-spi.c
+++ b/drivers/staging/iio/addac/adt7316-spi.c
@@ -23,15 +23,12 @@
* adt7316 register access by SPI
*/
-static int adt7316_spi_multi_read(void *client, u8 reg, u8 count, u8 *data)
+static int adt7316_spi_read(void *client, u8 reg, u8 *data)
{
struct spi_device *spi_dev = client;
u8 cmd[2];
int ret;
- if (count > ADT7316_REG_MAX_ADDR)
- count = ADT7316_REG_MAX_ADDR;
-
cmd[0] = ADT7316_SPI_CMD_WRITE;
cmd[1] = reg;
@@ -43,7 +40,7 @@ static int adt7316_spi_multi_read(void *client, u8 reg, u8 count, u8 *data)
cmd[0] = ADT7316_SPI_CMD_READ;
- ret = spi_write_then_read(spi_dev, cmd, 1, data, count);
+ ret = spi_write_then_read(spi_dev, cmd, 1, data, 1);
if (ret < 0) {
dev_err(&spi_dev->dev, "SPI read data error\n");
return ret;
@@ -52,21 +49,17 @@ static int adt7316_spi_multi_read(void *client, u8 reg, u8 count, u8 *data)
return 0;
}
-static int adt7316_spi_multi_write(void *client, u8 reg, u8 count, u8 *data)
+static int adt7316_spi_write(void *client, u8 reg, u8 val)
{
struct spi_device *spi_dev = client;
u8 buf[ADT7316_REG_MAX_ADDR + 2];
- int i, ret;
-
- if (count > ADT7316_REG_MAX_ADDR)
- count = ADT7316_REG_MAX_ADDR;
+ int ret = 0;
buf[0] = ADT7316_SPI_CMD_WRITE;
buf[1] = reg;
- for (i = 0; i < count; i++)
- buf[i + 2] = data[i];
+ buf[2] = val;
- ret = spi_write(spi_dev, buf, count + 2);
+ ret = spi_write(spi_dev, buf, 3);
if (ret < 0) {
dev_err(&spi_dev->dev, "SPI write error\n");
return ret;
@@ -75,16 +68,6 @@ static int adt7316_spi_multi_write(void *client, u8 reg, u8 count, u8 *data)
return ret;
}
-static int adt7316_spi_read(void *client, u8 reg, u8 *data)
-{
- return adt7316_spi_multi_read(client, reg, 1, data);
-}
-
-static int adt7316_spi_write(void *client, u8 reg, u8 val)
-{
- return adt7316_spi_multi_write(client, reg, 1, &val);
-}
-
/*
* device probe and remove
*/
@@ -95,8 +78,6 @@ static int adt7316_spi_probe(struct spi_device *spi_dev)
.client = spi_dev,
.read = adt7316_spi_read,
.write = adt7316_spi_write,
- .multi_read = adt7316_spi_multi_read,
- .multi_write = adt7316_spi_multi_write,
};
/* don't exceed max specified SPI CLK frequency */
diff --git a/drivers/staging/iio/addac/adt7316.h b/drivers/staging/iio/addac/adt7316.h
index 03d5300a98cd..e9f288420234 100644
--- a/drivers/staging/iio/addac/adt7316.h
+++ b/drivers/staging/iio/addac/adt7316.h
@@ -18,8 +18,6 @@ struct adt7316_bus {
void *client;
int (*read)(void *client, u8 reg, u8 *data);
int (*write)(void *client, u8 reg, u8 val);
- int (*multi_read)(void *client, u8 first_reg, u8 count, u8 *data);
- int (*multi_write)(void *client, u8 first_reg, u8 count, u8 *data);
};
#ifdef CONFIG_PM_SLEEP
--
2.17.1
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