Re: [PATCH v3 5/8] staging:iio:ade7854: Remove write_reg_* duplications

[Jonathan Cameron]

On Fri, 23 Mar 2018 11:26:41 -0300
Rodrigo Siqueira <rodrigosiqueiramelo@xxxxxxxxx> wrote:

> This patch removes code duplications related to the write_reg_*
> functions and centralizes them in a single function. Also, it eliminates
> the legacy functions and replaces them by a unique signature that is
> used by SPI and I2C.
> 
> Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@xxxxxxxxx>
Applied, thanks.

Jonathan

> ---
> Changes in v3:
>  - Update commit message
> 
>  drivers/staging/iio/meter/ade7854-i2c.c | 33 +--------------------------------
>  drivers/staging/iio/meter/ade7854-spi.c | 33 +--------------------------------
>  drivers/staging/iio/meter/ade7854.c     | 12 ++++++------
>  drivers/staging/iio/meter/ade7854.h     |  9 ++++-----
>  4 files changed, 12 insertions(+), 75 deletions(-)
> 
> diff --git a/drivers/staging/iio/meter/ade7854-i2c.c b/drivers/staging/iio/meter/ade7854-i2c.c
> index c9f46d26b752..29e959fdb932 100644
> --- a/drivers/staging/iio/meter/ade7854-i2c.c
> +++ b/drivers/staging/iio/meter/ade7854-i2c.c
> @@ -65,34 +65,6 @@ static int ade7854_i2c_write_reg(struct device *dev,
>  	return ret < 0 ? ret : 0;
>  }
>  
> -static int ade7854_i2c_write_reg_8(struct device *dev,
> -				   u16 reg_address,
> -				   u8 val)
> -{
> -	return ade7854_i2c_write_reg(dev, reg_address, val, 8);
> -}
> -
> -static int ade7854_i2c_write_reg_16(struct device *dev,
> -				    u16 reg_address,
> -				    u16 val)
> -{
> -	return ade7854_i2c_write_reg(dev, reg_address, val, 16);
> -}
> -
> -static int ade7854_i2c_write_reg_24(struct device *dev,
> -				    u16 reg_address,
> -				    u32 val)
> -{
> -	return ade7854_i2c_write_reg(dev, reg_address, val, 24);
> -}
> -
> -static int ade7854_i2c_write_reg_32(struct device *dev,
> -				    u16 reg_address,
> -				    u32 val)
> -{
> -	return ade7854_i2c_write_reg(dev, reg_address, val, 32);
> -}
> -
>  static int ade7854_i2c_read_reg_8(struct device *dev,
>  				  u16 reg_address,
>  				  u8 *val)
> @@ -213,10 +185,7 @@ static int ade7854_i2c_probe(struct i2c_client *client,
>  	st->read_reg_16 = ade7854_i2c_read_reg_16;
>  	st->read_reg_24 = ade7854_i2c_read_reg_24;
>  	st->read_reg_32 = ade7854_i2c_read_reg_32;
> -	st->write_reg_8 = ade7854_i2c_write_reg_8;
> -	st->write_reg_16 = ade7854_i2c_write_reg_16;
> -	st->write_reg_24 = ade7854_i2c_write_reg_24;
> -	st->write_reg_32 = ade7854_i2c_write_reg_32;
> +	st->write_reg = ade7854_i2c_write_reg;
>  	st->i2c = client;
>  	st->irq = client->irq;
>  
> diff --git a/drivers/staging/iio/meter/ade7854-spi.c b/drivers/staging/iio/meter/ade7854-spi.c
> index 9c5c16c4d6e0..be7397042850 100644
> --- a/drivers/staging/iio/meter/ade7854-spi.c
> +++ b/drivers/staging/iio/meter/ade7854-spi.c
> @@ -67,34 +67,6 @@ static int ade7854_spi_write_reg(struct device *dev,
>  	return ret;
>  }
>  
> -static int ade7854_spi_write_reg_8(struct device *dev,
> -				   u16 reg_address,
> -				   u8 val)
> -{
> -	return ade7854_spi_write_reg(dev, reg_address, val, 8);
> -}
> -
> -static int ade7854_spi_write_reg_16(struct device *dev,
> -				    u16 reg_address,
> -				    u16 val)
> -{
> -	return ade7854_spi_write_reg(dev, reg_address, val, 16);
> -}
> -
> -static int ade7854_spi_write_reg_24(struct device *dev,
> -				    u16 reg_address,
> -				    u32 val)
> -{
> -	return ade7854_spi_write_reg(dev, reg_address, val, 24);
> -}
> -
> -static int ade7854_spi_write_reg_32(struct device *dev,
> -				    u16 reg_address,
> -				    u32 val)
> -{
> -	return ade7854_spi_write_reg(dev, reg_address, val, 32);
> -}
> -
>  static int ade7854_spi_read_reg_8(struct device *dev,
>  				  u16 reg_address,
>  				  u8 *val)
> @@ -260,10 +232,7 @@ static int ade7854_spi_probe(struct spi_device *spi)
>  	st->read_reg_16 = ade7854_spi_read_reg_16;
>  	st->read_reg_24 = ade7854_spi_read_reg_24;
>  	st->read_reg_32 = ade7854_spi_read_reg_32;
> -	st->write_reg_8 = ade7854_spi_write_reg_8;
> -	st->write_reg_16 = ade7854_spi_write_reg_16;
> -	st->write_reg_24 = ade7854_spi_write_reg_24;
> -	st->write_reg_32 = ade7854_spi_write_reg_32;
> +	st->write_reg = ade7854_spi_write_reg;
>  	st->irq = spi->irq;
>  	st->spi = spi;
>  
> diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c
> index 0193ae3aae29..45984b9a2bee 100644
> --- a/drivers/staging/iio/meter/ade7854.c
> +++ b/drivers/staging/iio/meter/ade7854.c
> @@ -105,7 +105,7 @@ static ssize_t ade7854_write_8bit(struct device *dev,
>  	ret = kstrtou8(buf, 10, &val);
>  	if (ret)
>  		goto error_ret;
> -	ret = st->write_reg_8(dev, this_attr->address, val);
> +	ret = st->write_reg(dev, this_attr->address, val, 8);
>  
>  error_ret:
>  	return ret ? ret : len;
> @@ -126,7 +126,7 @@ static ssize_t ade7854_write_16bit(struct device *dev,
>  	ret = kstrtou16(buf, 10, &val);
>  	if (ret)
>  		goto error_ret;
> -	ret = st->write_reg_16(dev, this_attr->address, val);
> +	ret = st->write_reg(dev, this_attr->address, val, 16);
>  
>  error_ret:
>  	return ret ? ret : len;
> @@ -147,7 +147,7 @@ static ssize_t ade7854_write_24bit(struct device *dev,
>  	ret = kstrtou32(buf, 10, &val);
>  	if (ret)
>  		goto error_ret;
> -	ret = st->write_reg_24(dev, this_attr->address, val);
> +	ret = st->write_reg(dev, this_attr->address, val, 24);
>  
>  error_ret:
>  	return ret ? ret : len;
> @@ -168,7 +168,7 @@ static ssize_t ade7854_write_32bit(struct device *dev,
>  	ret = kstrtou32(buf, 10, &val);
>  	if (ret)
>  		goto error_ret;
> -	ret = st->write_reg_32(dev, this_attr->address, val);
> +	ret = st->write_reg(dev, this_attr->address, val, 32);
>  
>  error_ret:
>  	return ret ? ret : len;
> @@ -183,7 +183,7 @@ static int ade7854_reset(struct device *dev)
>  	st->read_reg_16(dev, ADE7854_CONFIG, &val);
>  	val |= BIT(7); /* Software Chip Reset */
>  
> -	return st->write_reg_16(dev, ADE7854_CONFIG, val);
> +	return st->write_reg(dev, ADE7854_CONFIG, val, 16);
>  }
>  
>  static IIO_DEV_ATTR_AIGAIN(0644,
> @@ -426,7 +426,7 @@ static int ade7854_set_irq(struct device *dev, bool enable)
>  	else
>  		irqen &= ~BIT(17);
>  
> -	return st->write_reg_32(dev, ADE7854_MASK0, irqen);
> +	return st->write_reg(dev, ADE7854_MASK0, irqen, 32);
>  }
>  
>  static int ade7854_initial_setup(struct iio_dev *indio_dev)
> diff --git a/drivers/staging/iio/meter/ade7854.h b/drivers/staging/iio/meter/ade7854.h
> index a82d38224cbd..290adbf56951 100644
> --- a/drivers/staging/iio/meter/ade7854.h
> +++ b/drivers/staging/iio/meter/ade7854.h
> @@ -145,7 +145,8 @@
>  
>  /**
>   * struct ade7854_state - device instance specific data
> - * @spi:			actual spi_device
> + * @spi:		actual spi_device
> + * @write_reg		Wrapper function for I2C and SPI write
>   * @indio_dev:		industrial I/O device structure
>   * @buf_lock:		mutex to protect tx and rx
>   * @tx:			transmit buffer
> @@ -158,10 +159,8 @@ struct ade7854_state {
>  	int (*read_reg_16)(struct device *dev, u16 reg_address, u16 *val);
>  	int (*read_reg_24)(struct device *dev, u16 reg_address, u32 *val);
>  	int (*read_reg_32)(struct device *dev, u16 reg_address, u32 *val);
> -	int (*write_reg_8)(struct device *dev, u16 reg_address, u8 val);
> -	int (*write_reg_16)(struct device *dev, u16 reg_address, u16 val);
> -	int (*write_reg_24)(struct device *dev, u16 reg_address, u32 val);
> -	int (*write_reg_32)(struct device *dev, u16 reg_address, u32 val);
> +	int (*write_reg)(struct device *dev, u16 reg_address, u32 val,
> +			 int bits);
>  	int irq;
>  	struct mutex buf_lock;
>  	u8 tx[ADE7854_MAX_TX] ____cacheline_aligned;