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Message-ID: <20180318095854.00e67d31@archlinux>
Date: Sun, 18 Mar 2018 09:58:54 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>
Cc: John Syne <john3909@...il.com>, Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org, Barry Song <21cnbao@...il.com>,
daniel.baluta@....com
Subject: Re: [PATCH v2 5/8] staging:iio:ade7854: Replace many functions for
one function
On Fri, 16 Mar 2018 19:49:40 -0300
Rodrigo Siqueira <rodrigosiqueiramelo@...il.com> 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@...il.com>
Makes sense and a nice reduction in lines of code.
Will pick up once the precursors are ready.
Thanks,
Jonathan
> ---
> 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 1daad42b1e92..e95147a1bac1 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, DATA_SIZE_8_BITS);
> -}
> -
> -static int ade7854_i2c_write_reg_16(struct device *dev,
> - u16 reg_address,
> - u16 val)
> -{
> - return ade7854_i2c_write_reg(dev, reg_address, val, DATA_SIZE_16_BITS);
> -}
> -
> -static int ade7854_i2c_write_reg_24(struct device *dev,
> - u16 reg_address,
> - u32 val)
> -{
> - return ade7854_i2c_write_reg(dev, reg_address, val, DATA_SIZE_24_BITS);
> -}
> -
> -static int ade7854_i2c_write_reg_32(struct device *dev,
> - u16 reg_address,
> - u32 val)
> -{
> - return ade7854_i2c_write_reg(dev, reg_address, val, DATA_SIZE_32_BITS);
> -}
> -
> 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 f21dc24194fb..1eba3044b86f 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, DATA_SIZE_8_BITS);
> -}
> -
> -static int ade7854_spi_write_reg_16(struct device *dev,
> - u16 reg_address,
> - u16 val)
> -{
> - return ade7854_spi_write_reg(dev, reg_address, val, DATA_SIZE_16_BITS);
> -}
> -
> -static int ade7854_spi_write_reg_24(struct device *dev,
> - u16 reg_address,
> - u32 val)
> -{
> - return ade7854_spi_write_reg(dev, reg_address, val, DATA_SIZE_24_BITS);
> -}
> -
> -static int ade7854_spi_write_reg_32(struct device *dev,
> - u16 reg_address,
> - u32 val)
> -{
> - return ade7854_spi_write_reg(dev, reg_address, val, DATA_SIZE_32_BITS);
> -}
> -
> 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..4aa7c6ce0016 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, DATA_SIZE_8_BITS);
>
> 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, DATA_SIZE_16_BITS);
>
> 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, DATA_SIZE_24_BITS);
>
> 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, DATA_SIZE_32_BITS);
>
> 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, DATA_SIZE_16_BITS);
> }
>
> 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, DATA_SIZE_32_BITS);
> }
>
> 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 71bdd638f348..aa29faf7c91f 100644
> --- a/drivers/staging/iio/meter/ade7854.h
> +++ b/drivers/staging/iio/meter/ade7854.h
> @@ -152,7 +152,8 @@ enum data_size {
>
> /**
> * 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
> @@ -165,10 +166,8 @@ 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 type);
> int irq;
> struct mutex buf_lock;
> u8 tx[ADE7854_MAX_TX] ____cacheline_aligned;
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