Re: [PATCH v2 1/1] i2c: drivers: Use generic definitions for bus frequencies (part 2)

From: Robert Foss
Date: Wed Mar 31 2021 - 10:11:02 EST


Hey Andy,

This patch looks good to me.

Reviewed-by: Robert Foss <robert.foss@xxxxxxxxxx>

On Wed, 31 Mar 2021 at 12:46, Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> Since we have generic definitions for bus frequencies, let's use them.
>
> Cc: Wolfram Sang <wsa@xxxxxxxxxxxxx>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Acked-by: Khalil Blaiech <kblaiech@xxxxxxxxxx>
> ---
> v2: added tag (Khalil), converted one missed place in DesignWare driver
> drivers/i2c/busses/i2c-designware-master.c | 2 +-
> drivers/i2c/busses/i2c-mlxbf.c | 14 ++++----------
> drivers/i2c/busses/i2c-qcom-cci.c | 4 ++--
> 3 files changed, 7 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
> index dd27b9dbe931..3f4d2124e0fc 100644
> --- a/drivers/i2c/busses/i2c-designware-master.c
> +++ b/drivers/i2c/busses/i2c-designware-master.c
> @@ -78,7 +78,7 @@ static int i2c_dw_set_timings_master(struct dw_i2c_dev *dev)
> * difference is the timing parameter values since the registers are
> * the same.
> */
> - if (t->bus_freq_hz == 1000000) {
> + if (t->bus_freq_hz == I2C_MAX_FAST_MODE_PLUS_FREQ) {
> /*
> * Check are Fast Mode Plus parameters available. Calculate
> * SCL timing parameters for Fast Mode Plus if not set.
> diff --git a/drivers/i2c/busses/i2c-mlxbf.c b/drivers/i2c/busses/i2c-mlxbf.c
> index 2fb0532d8a16..80ab831df349 100644
> --- a/drivers/i2c/busses/i2c-mlxbf.c
> +++ b/drivers/i2c/busses/i2c-mlxbf.c
> @@ -172,12 +172,6 @@
> #define MLXBF_I2C_SMBUS_THIGH_MAX_TBUF 0x14
> #define MLXBF_I2C_SMBUS_SCL_LOW_TIMEOUT 0x18
>
> -enum {
> - MLXBF_I2C_TIMING_100KHZ = 100000,
> - MLXBF_I2C_TIMING_400KHZ = 400000,
> - MLXBF_I2C_TIMING_1000KHZ = 1000000,
> -};
> -
> /*
> * Defines SMBus operating frequency and core clock frequency.
> * According to ADB files, default values are compliant to 100KHz SMBus
> @@ -1202,7 +1196,7 @@ static int mlxbf_i2c_init_timings(struct platform_device *pdev,
>
> ret = device_property_read_u32(dev, "clock-frequency", &config_khz);
> if (ret < 0)
> - config_khz = MLXBF_I2C_TIMING_100KHZ;
> + config_khz = I2C_MAX_STANDARD_MODE_FREQ;
>
> switch (config_khz) {
> default:
> @@ -1210,15 +1204,15 @@ static int mlxbf_i2c_init_timings(struct platform_device *pdev,
> pr_warn("Illegal value %d: defaulting to 100 KHz\n",
> config_khz);
> fallthrough;
> - case MLXBF_I2C_TIMING_100KHZ:
> + case I2C_MAX_STANDARD_MODE_FREQ:
> config_idx = MLXBF_I2C_TIMING_CONFIG_100KHZ;
> break;
>
> - case MLXBF_I2C_TIMING_400KHZ:
> + case I2C_MAX_FAST_MODE_FREQ:
> config_idx = MLXBF_I2C_TIMING_CONFIG_400KHZ;
> break;
>
> - case MLXBF_I2C_TIMING_1000KHZ:
> + case I2C_MAX_FAST_MODE_PLUS_FREQ:
> config_idx = MLXBF_I2C_TIMING_CONFIG_1000KHZ;
> break;
> }
> diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
> index 1c259b5188de..c63d5545fc2a 100644
> --- a/drivers/i2c/busses/i2c-qcom-cci.c
> +++ b/drivers/i2c/busses/i2c-qcom-cci.c
> @@ -569,9 +569,9 @@ static int cci_probe(struct platform_device *pdev)
> cci->master[idx].mode = I2C_MODE_STANDARD;
> ret = of_property_read_u32(child, "clock-frequency", &val);
> if (!ret) {
> - if (val == 400000)
> + if (val == I2C_MAX_FAST_MODE_FREQ)
> cci->master[idx].mode = I2C_MODE_FAST;
> - else if (val == 1000000)
> + else if (val == I2C_MAX_FAST_MODE_PLUS_FREQ)
> cci->master[idx].mode = I2C_MODE_FAST_PLUS;
> }
>
> --
> 2.30.2
>