On 06/01/2017 01:36 PM, patrice.chot...@st.com wrote:
> From: Patrice Chotard <patrice.chot...@st.com>
>
> Add reset_count() method to be able to get the number
> of resets contained into a resets property. This will allow
> to allocate the right amount of memory in order to keep resets
> reference. These resets reference can be used later on error path
> or in .remove callback to release these resets.
>
> Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
> ---
> v5: _ replace fdtdec_parse_phandle_with_args() by
> dev_read_phandle_with_args()
> v4: _ add reset_count() method
>
> drivers/reset/reset-uclass.c | 13 +++++++++++++
> include/reset.h | 11 +++++++++++
> 2 files changed, 24 insertions(+)
>
> diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c
> index 4fd82b9..4b17d4c 100644
> --- a/drivers/reset/reset-uclass.c
> +++ b/drivers/reset/reset-uclass.c
> @@ -97,6 +97,19 @@ int reset_get_by_name(struct udevice *dev, const char
> *name,
> return reset_get_by_index(dev, index, reset_ctl);
> }
>
> +int reset_count(struct udevice *dev)
> +{
> + int count;
> + struct ofnode_phandle_args args;
> +
> + for (count = 0; ; count++) {
> + if (dev_read_phandle_with_args(dev,
> + "resets", "#reset-cells", 0,
> + count, &args))
Don't we have some generic thing in libfdt to count number of phandle
args ? This looks weird to me ...
> + return count;
> + }
> +}
> +
> int reset_request(struct reset_ctl *reset_ctl)
> {
> struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
> diff --git a/include/reset.h b/include/reset.h
> index 4f2e35f..e8e68b6 100644
> --- a/include/reset.h
> +++ b/include/reset.h
> @@ -100,6 +100,17 @@ int reset_get_by_name(struct udevice *dev, const char
> *name,
> struct reset_ctl *reset_ctl);
>
> /**
> + * reset_count - Get reset count contained in the "resets" property.
> + *
> + * This returns the count of reset found into the "resets" property. This
> + * allows to allocate the right amount of memory to keep reset reference.
> + *
> + * @dev: The client device.
> + * @return number of resets found.
> + */
> +int reset_count(struct udevice *dev);
> +
> +/**
> * reset_request - Request a reset signal.
> *
> * @reset_ctl: A reset control struct.
>
--
Best regards,
Marek Vasut
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