Re: [PATCH v13 1/6] soc: mediatek: mutex: add common interface to accommodate multiple modules operationg MUTEX

[CK Hu <ck.hu@mediatek.com>]

Hi, Moudy:

On Tue, 2022-03-15 at 14:10 +0800, Moudy Ho wrote:
> In order to allow multiple modules to operate MUTEX hardware through
> a common interfrace, a flexible index "mtk_mutex_table_index" needs
> to
> be added to replace original component ID so that like DDP and MDP
> can add their own MUTEX table settings independently.
> 
> In addition, 4 generic interface "mtk_mutex_set_mod",
> "mtk_mutex_set_sof",
> "mtk_mutex_clear_mod" and "mtk_mutex_clear_sof" have been added,
> which is
> expected to replace the "mtk_mutex_add_comp" and
> "mtk_mutex_remove_comp"
> pair originally dedicated to DDP in the future.
> 
> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
> ---
>  drivers/soc/mediatek/mtk-mutex.c       | 122
> +++++++++++++++++++++++++
>  include/linux/soc/mediatek/mtk-mutex.h |  33 +++++++
>  2 files changed, 155 insertions(+)
> 

[snip]

> 
> diff --git a/include/linux/soc/mediatek/mtk-mutex.h
> b/include/linux/soc/mediatek/mtk-mutex.h
> index 6fe4ffbde290..c8355bb0e6d6 100644
> --- a/include/linux/soc/mediatek/mtk-mutex.h
> +++ b/include/linux/soc/mediatek/mtk-mutex.h
> @@ -10,14 +10,47 @@ struct regmap;
>  struct device;
>  struct mtk_mutex;
>  
> +enum mtk_mutex_table_index {
> +	MUTEX_TABLE_IDX_NONE = 0,	/* Invalid engine */

Useless, so remove this.

> +
> +	/* MDP table index */
> +	MUTEX_TABLE_IDX_MDP_RDMA0,
> +	MUTEX_TABLE_IDX_MDP_RSZ0,
> +	MUTEX_TABLE_IDX_MDP_RSZ1,
> +	MUTEX_TABLE_IDX_MDP_TDSHP0,
> +	MUTEX_TABLE_IDX_MDP_WROT0,
> +	MUTEX_TABLE_IDX_MDP_WDMA,
> +	MUTEX_TABLE_IDX_MDP_AAL0,
> +	MUTEX_TABLE_IDX_MDP_CCORR0,
> +
> +	/* DDP table index */
> +	MUTEX_TABLE_IDX_DDP_DSI0,
> +	MUTEX_TABLE_IDX_DDP_DSI1,
> +	MUTEX_TABLE_IDX_DDP_DSI2,
> +	MUTEX_TABLE_IDX_DDP_DSI3,
> +	MUTEX_TABLE_IDX_DDP_DPI0,
> +	MUTEX_TABLE_IDX_DDP_DPI1,
> +	MUTEX_TABLE_IDX_DDP_DP_INTF0,
> +	MUTEX_TABLE_IDX_DDP_DP_INTF1,

If this patch would support DDP, add all DDP index. If this patch does
not support DDP, remove these.

Regards,
CK

> +
> +	MUTEX_TABLE_IDX_MAX		/* ALWAYS keep at the end */
> +};
> +
>  struct mtk_mutex *mtk_mutex_get(struct device *dev);
>  int mtk_mutex_prepare(struct mtk_mutex *mutex);
>  void mtk_mutex_add_comp(struct mtk_mutex *mutex,
>  			enum mtk_ddp_comp_id id);
> +void mtk_mutex_set_mod(struct mtk_mutex *mutex,
> +		       enum mtk_mutex_table_index idx);
> +void mtk_mutex_set_sof(struct mtk_mutex *mutex,
> +		       enum mtk_mutex_table_index idx);
>  void mtk_mutex_enable(struct mtk_mutex *mutex);
>  void mtk_mutex_disable(struct mtk_mutex *mutex);
>  void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
>  			   enum mtk_ddp_comp_id id);
> +void mtk_mutex_clear_mod(struct mtk_mutex *mutex,
> +			 enum mtk_mutex_table_index idx);
> +void mtk_mutex_clear_sof(struct mtk_mutex *mutex);
>  void mtk_mutex_unprepare(struct mtk_mutex *mutex);
>  void mtk_mutex_put(struct mtk_mutex *mutex);
>  void mtk_mutex_acquire(struct mtk_mutex *mutex);