On Mon, 2020-08-03 at 14:15 +0800, Crystal Guo wrote:
> Introduce force-update method for assert and deassert interface,
> which force the write operation in case the read already happens
> to return the correct value.
>
> Signed-off-by: Crystal Guo <crystal....@mediatek.com>
> ---
> drivers/reset/reset-ti-syscon.c | 15 +++++++++++++--
> 1 file changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/reset/reset-ti-syscon.c b/drivers/reset/reset-ti-syscon.c
> index 1c74bcb9a6c3..f4baf78afd14 100644
> --- a/drivers/reset/reset-ti-syscon.c
> +++ b/drivers/reset/reset-ti-syscon.c
> @@ -57,6 +57,7 @@ struct ti_syscon_reset_data {
> struct ti_syscon_reset_control *controls;
> unsigned int nr_controls;
> bool assert_deassert_together;
> + bool update_force;
> };
>
> #define to_ti_syscon_reset_data(rcdev) \
> @@ -90,7 +91,10 @@ static int ti_syscon_reset_assert(struct
> reset_controller_dev *rcdev,
> mask = BIT(control->assert_bit);
> value = (control->flags & ASSERT_SET) ? mask : 0x0;
>
> - return regmap_update_bits(data->regmap, control->assert_offset, mask,
> value);
> + if (data->update_force)
> + return regmap_write_bits(data->regmap, control->assert_offset,
> mask, value);
> + else
> + return regmap_update_bits(data->regmap, control->assert_offset,
> mask, value);
> }
>
> /**
> @@ -121,7 +125,10 @@ static int ti_syscon_reset_deassert(struct
> reset_controller_dev *rcdev,
> mask = BIT(control->deassert_bit);
> value = (control->flags & DEASSERT_SET) ? mask : 0x0;
>
> - return regmap_update_bits(data->regmap, control->deassert_offset, mask,
> value);
> + if (data->update_force)
> + return regmap_write_bits(data->regmap,
> control->deassert_offset, mask, value);
> + else
> + return regmap_update_bits(data->regmap,
> control->deassert_offset, mask, value);
> }
>
> /**
> @@ -223,6 +230,10 @@ static int ti_syscon_reset_probe(struct platform_device
> *pdev)
> data->assert_deassert_together = true;
> else
> data->assert_deassert_together = false;
> + if (of_property_read_bool(np, "update-force"))
> + data->update_force = true;
> + else
> + data->update_force = false;
You are using 'force-update' in commit message, and I think that a
better one.
Please change it if we still need this one
Joe.C
