diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2026-01-12 14:46:12 +0100 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@kernel.org> | 2026-01-13 18:34:29 +0100 |
| commit | f83aa451460683c33824571269216e52154615da (patch) | |
| tree | eab106a88c452d4ebd8362086e84fd76e5217dbc /drivers | |
| parent | ec416d46910153b4faf41eef2be72778c18c7adb (diff) | |
i2c: nomadik: Use HZ_PER_GHZ constant instead of plain number
Use defined constant to avoid the possible mistakes and to provide
an additional information on the units.
While at it, drop unneeded 64-bit division, all operands fit 32-bit.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260112134900.4142954-5-andriy.shevchenko@linux.intel.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/i2c-nomadik.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index 19b648fc094d..b63ee51c1652 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -31,6 +31,7 @@ #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/units.h> #define DRIVER_NAME "nmk-i2c" @@ -419,10 +420,10 @@ static void setup_i2c_controller(struct nmk_i2c_dev *priv) * modes are 250ns, 100ns, 10ns respectively. * * As the time for one cycle T in nanoseconds is - * T = (1/f) * 1000000000 => - * slsu = cycles / (1000000000 / f) + 1 + * T = (1/f) * HZ_PER_GHZ => + * slsu = cycles / (HZ_PER_GHZ / f) + 1 */ - ns = DIV_ROUND_UP_ULL(1000000000ULL, i2c_clk); + ns = DIV_ROUND_UP(HZ_PER_GHZ, i2c_clk); switch (priv->sm) { case I2C_FREQ_MODE_FAST: case I2C_FREQ_MODE_FAST_PLUS: |