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Date: Tue, 22 Mar 2022 17:37:41 +0800
From: CK Hu <ck.hu@...iatek.com>
To: Moudy Ho <moudy.ho@...iatek.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
"Jernej Skrabec" <jernej.skrabec@...l.net>
CC: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Rob Landley <rob@...dley.net>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
<linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
Alexandre Courbot <acourbot@...omium.org>,
<tfiga@...omium.org>, <drinkcat@...omium.org>,
<pihsun@...omium.org>, <hsinyi@...gle.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Maoguang Meng <maoguang.meng@...iatek.com>,
daoyuan huang <daoyuan.huang@...iatek.com>,
Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
<menghui.lin@...iatek.com>, <sj.huang@...iatek.com>,
<allen-kh.cheng@...iatek.com>, <randy.wu@...iatek.com>,
<jason-jh.lin@...iatek.com>, <roy-cw.yeh@...iatek.com>,
<river.cheng@...iatek.com>, <srv_heupstream@...iatek.com>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [PATCH v14 1/6] soc: mediatek: mutex: add common interface to
accommodate multiple modules operationg MUTEX
Hi, Moudy:
On Thu, 2022-03-17 at 22:39 +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@...iatek.com>
> ---
> drivers/soc/mediatek/mtk-mutex.c | 105
> +++++++++++++++++++++++++
> include/linux/soc/mediatek/mtk-mutex.h | 21 +++++
> 2 files changed, 126 insertions(+)
>
> diff --git a/drivers/soc/mediatek/mtk-mutex.c
> b/drivers/soc/mediatek/mtk-mutex.c
> index aaf8fc1abb43..f8c33186685a 100644
> --- a/drivers/soc/mediatek/mtk-mutex.c
> +++ b/drivers/soc/mediatek/mtk-mutex.c
> @@ -151,11 +151,17 @@ enum mtk_mutex_sof_id {
> MUTEX_SOF_DSI3,
> };
>
> +struct mtk_mutex_mod {
> + u8 tab;
tab is always 0 in this series, so remove this.
> + u32 value;
Without tab, this struct is not necessary.
> +};
> +
> struct mtk_mutex_data {
> const unsigned int *mutex_mod;
> const unsigned int *mutex_sof;
> const unsigned int mutex_mod_reg;
> const unsigned int mutex_sof_reg;
> + const struct mtk_mutex_mod *mutex_table_mod;
> const bool no_clk;
> };
>
> @@ -445,6 +451,65 @@ void mtk_mutex_add_comp(struct mtk_mutex *mutex,
> }
> EXPORT_SYMBOL_GPL(mtk_mutex_add_comp);
>
> +void mtk_mutex_set_mod(struct mtk_mutex *mutex,
> + enum mtk_mutex_table_index idx)
> +{
> + struct mtk_mutex_ctx *mtx = container_of(mutex, struct
> mtk_mutex_ctx,
> + mutex[mutex->id]);
> + unsigned int reg;
> + unsigned int offset;
> +
> + WARN_ON(&mtx->mutex[mutex->id] != mutex);
> +
> + if (idx < MUTEX_TABLE_IDX_MDP_RDMA0 ||
> + idx >= MUTEX_TABLE_IDX_MAX)
error message?
> + return;
> +
> + if (mtx->data->mutex_table_mod[idx].tab)
> + offset = DISP_REG_MUTEX_MOD2(mutex->id);
> + else
> + offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
> + mutex->id);
> +
> + reg = readl_relaxed(mtx->regs + offset);
> + reg |= 1 << mtx->data->mutex_table_mod[idx].value;
> + writel_relaxed(reg, mtx->regs + offset);
> +}
> +EXPORT_SYMBOL_GPL(mtk_mutex_set_mod);
> +
> +void mtk_mutex_set_sof(struct mtk_mutex *mutex,
> + enum mtk_mutex_table_index idx)
> +{
> + struct mtk_mutex_ctx *mtx = container_of(mutex, struct
> mtk_mutex_ctx,
> + mutex[mutex->id]);
> + unsigned int sof_id;
> +
> + WARN_ON(&mtx->mutex[mutex->id] != mutex);
> +
> + if (idx < MUTEX_TABLE_IDX_MDP_RDMA0 ||
> + idx >= MUTEX_TABLE_IDX_MAX)
Ditto.
> + return;
> +
> + switch (idx) {
> + case MUTEX_TABLE_IDX_MDP_RDMA0:
> + case MUTEX_TABLE_IDX_MDP_RSZ0:
> + case MUTEX_TABLE_IDX_MDP_RSZ1:
> + case MUTEX_TABLE_IDX_MDP_TDSHP0:
> + case MUTEX_TABLE_IDX_MDP_WROT0:
> + case MUTEX_TABLE_IDX_MDP_WDMA:
> + case MUTEX_TABLE_IDX_MDP_AAL0:
> + case MUTEX_TABLE_IDX_MDP_CCORR0:
Error & return?
Regards,
CK
> + default:
> + sof_id = MUTEX_SOF_SINGLE_MODE;
> + break;
> + }
> +
> + writel_relaxed(mtx->data->mutex_sof[sof_id],
> + mtx->regs +
> + DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg,
> mutex->id));
> +}
> +EXPORT_SYMBOL_GPL(mtk_mutex_set_sof);
> +
> void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
> enum mtk_ddp_comp_id id)
> {
> @@ -485,6 +550,46 @@ void mtk_mutex_remove_comp(struct mtk_mutex
> *mutex,
> }
> EXPORT_SYMBOL_GPL(mtk_mutex_remove_comp);
>
> +void mtk_mutex_clear_mod(struct mtk_mutex *mutex,
> + enum mtk_mutex_table_index idx)
> +{
> + struct mtk_mutex_ctx *mtx = container_of(mutex, struct
> mtk_mutex_ctx,
> + mutex[mutex->id]);
> + unsigned int reg;
> + unsigned int offset;
> +
> + WARN_ON(&mtx->mutex[mutex->id] != mutex);
> +
> + if (idx < MUTEX_TABLE_IDX_MDP_RDMA0 ||
> + idx >= MUTEX_TABLE_IDX_MAX)
> + return;
> +
> + if (mtx->data->mutex_table_mod[idx].tab)
> + offset = DISP_REG_MUTEX_MOD2(mutex->id);
> + else
> + offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
> + mutex->id);
> +
> + reg = readl_relaxed(mtx->regs + offset);
> + reg &= ~(1 << mtx->data->mutex_table_mod[idx].value);
> + writel_relaxed(reg, mtx->regs + offset);
> +}
> +EXPORT_SYMBOL_GPL(mtk_mutex_clear_mod);
> +
> +void mtk_mutex_clear_sof(struct mtk_mutex *mutex)
> +{
> + struct mtk_mutex_ctx *mtx = container_of(mutex, struct
> mtk_mutex_ctx,
> + mutex[mutex->id]);
> +
> + WARN_ON(&mtx->mutex[mutex->id] != mutex);
> +
> + writel_relaxed(MUTEX_SOF_SINGLE_MODE,
> + mtx->regs +
> + DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg,
> + mutex->id));
> +}
> +EXPORT_SYMBOL_GPL(mtk_mutex_clear_sof);
> +
> void mtk_mutex_enable(struct mtk_mutex *mutex)
> {
> struct mtk_mutex_ctx *mtx = container_of(mutex, struct
> mtk_mutex_ctx,
> diff --git a/include/linux/soc/mediatek/mtk-mutex.h
> b/include/linux/soc/mediatek/mtk-mutex.h
> index 6fe4ffbde290..200f4365c950 100644
> --- a/include/linux/soc/mediatek/mtk-mutex.h
> +++ b/include/linux/soc/mediatek/mtk-mutex.h
> @@ -10,14 +10,35 @@ struct regmap;
> struct device;
> struct mtk_mutex;
>
> +enum mtk_mutex_table_index {
> + /* 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,
> +
> + 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);
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