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SubjectRe: [PATCH 06/10] soc: mediatek: add register device function
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On 01/29/2019 03:32 PM, Bibby Hsieh wrote:
> GCE cannot know the register base address, we store the subsys-base address
> relationship in the device node, and store the relationship by
> cmdq_register_device function.
>
> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
> ---
> drivers/soc/mediatek/mtk-cmdq-helper.c | 24 ++++++++++++++++++++++++
> include/linux/soc/mediatek/mtk-cmdq.h | 1 +
> 2 files changed, 25 insertions(+)
>
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 6e4b85e..6ad997f 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -32,6 +32,30 @@ u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base)
> }
> EXPORT_SYMBOL(cmdq_subsys_base_to_id);
>
> +struct cmdq_base *cmdq_register_device(struct device *dev)
> +{
> + struct cmdq_base *clt_base;
> + struct of_phandle_args spec;
> + u32 idx;
> +
> + clt_base = devm_kzalloc(dev, sizeof(*clt_base), GFP_KERNEL);
> + if (!clt_base)
> + return NULL;
> +
> + /* parse subsys */
> + for (idx = 0; idx < ARRAY_SIZE(clt_base->subsys); idx++) {
> + if (of_parse_phandle_with_args(dev->of_node, "gce-subsys",
> + "#gce-subsys-cells", idx, &spec))

nit: Should have more indention for the line above. (Align with the
dev->of_node?)

> + break;
> + clt_base->subsys[idx].base = spec.args[0];
> + clt_base->subsys[idx].id = spec.args[1];
> + }
> + clt_base->count = idx;
> +
> + return clt_base;
> +}
> +EXPORT_SYMBOL(cmdq_register_device);
> +
> static void cmdq_client_timeout(struct timer_list *t)
> {
> struct cmdq_client *client = from_timer(client, t, timer);
> diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> index 0c7a6ee..a1f5eb6 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -138,5 +138,6 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
> int cmdq_pkt_flush(struct cmdq_pkt *pkt);
>
> u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base);
> +struct cmdq_base *cmdq_register_device(struct device *dev);
>
> #endif /* __MTK_CMDQ_H__ */
>

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