[PATCH v5 2/5] dma-engine: sun4i: Add has_reset option to quirk
Csókás Bence
csokas.bence at prolan.hu
Sun Nov 3 23:41:56 PST 2024
Hi!
On 2024. 11. 02. 18:45, Andre Przywara wrote:
> On Sat, 2 Nov 2024 10:31:41 +0100
> "Csókás, Bence" <csokas.bence at prolan.hu> wrote:
>
> Hi,
>
>> From: Mesih Kilinc <mesihkilinc at gmail.com>
>>
>> static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev)
>> @@ -1215,6 +1218,13 @@ static int sun4i_dma_probe(struct platform_device *pdev)
>> return PTR_ERR(priv->clk);
>> }
>>
>> + if (priv->cfg->has_reset) {
>> + priv->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL);
>
> Can't we use devm_reset_control_get_optional_exclusive(), and then save
> this whole has_reset bit?
For suniv, reset is REQUIRED. For sun4i, reset DOES NOT EXIST.
has_reset does not mean that whether this instance has a reset control
or not, that is handled by checking priv->rst for NULL. has_reset means
whether reset is REQUIRED by this type of DMA, specified by the DT match
data.
Bence
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