Re: [PATCH v4 2/3] firmware: mediatek: add adsp ipc protocol interface

Re: [PATCH v4 2/3] firmware: mediatek: add adsp ipc protocol interface

[Tzung-Bi Shih]

On Thu, Nov 25, 2021 at 08:29:24PM +0800, allen-kh.cheng wrote:
> diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c b/drivers/firmware/mediatek/mtk-adsp-ipc.c
[...]
> +static void adsp_ipc_recv(struct mbox_client *c, void *msg)
> +{
> +	struct mtk_adsp_chan *chan = container_of(c, struct mtk_adsp_chan, cl);
> +
> +	if (chan->idx == MTK_ADSP_MBOX_REPLY)
> +		chan->ipc->ops->handle_reply(chan->ipc);
> +	else
> +		chan->ipc->ops->handle_request(chan->ipc);

Using switch ... case ... makes the intention more clear.

> +static int mtk_adsp_ipc_probe(struct platform_device *pdev)
> +{
[...]
> +	for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> +		chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
> +		if (!chan_name)
> +			return -ENOMEM;

It needs to go error handling path.

> +static int mtk_adsp_remove(struct platform_device *pdev)
> +{
> +	struct mtk_adsp_chan *dsp_chan;
> +	struct mtk_adsp_ipc *dsp_ipc;
> +	int i;
> +
> +	dsp_ipc = dev_get_drvdata(&pdev->dev);

To be concise, I would prefer dev_get_drvdata() inline to the line where the variable is declared.

Re: [PATCH v4 3/3] mailbox: mediatek: add support for adsp mailbox controller

[Tzung-Bi Shih]

On Thu, Nov 25, 2021 at 08:29:25PM +0800, allen-kh.cheng wrote:
> diff --git a/drivers/mailbox/mtk-adsp-mailbox.c b/drivers/mailbox/mtk-adsp-mailbox.c
[...]
> +static bool mtk_adsp_mbox_last_tx_done(struct mbox_chan *chan)
> +{
> +	struct adsp_mbox_ch_info *ch_info = chan->con_priv;
> +	void __iomem *reg = ch_info->va_reg;
> +
> +	return (readl(reg + MTK_ADSP_MBOX_IN_CMD) == 0) ? true : false;

To be concise, readl(reg + MTK_ADSP_MBOX_IN_CMD) == 0.

> +static int mtk_adsp_mbox_probe(struct platform_device *pdev)
> +{
[...]
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (!res) {
> +		dev_err(dev, "no adsp mbox register resource\n");
> +		return -ENXIO;
> +	}
> +
> +	priv->va_mboxreg = devm_platform_ioremap_resource(pdev, 0);
> +	if (IS_ERR(priv->va_mboxreg))
> +		return PTR_ERR(priv->va_mboxreg);

If using devm_platform_ioremap_resource(), it doesn't need to call platform_get_resource().  res is unused.