| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 27 Apr 2022 14:44:20 +0800
From: Moudy Ho <moudy.ho@...iatek.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>
CC: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
Rob Landley <rob@...dley.net>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
<linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
Alexandre Courbot <acourbot@...omium.org>,
<tfiga@...omium.org>, <drinkcat@...omium.org>,
<pihsun@...omium.org>, <hsinyi@...gle.com>,
Benjamin Gaignard <benjamin.gaignard@...labora.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
daoyuan huang <daoyuan.huang@...iatek.com>,
Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
<allen-kh.cheng@...iatek.com>, <xiandong.wang@...iatek.com>,
<randy.wu@...iatek.com>, <moudy.ho@...iatek.com>,
<jason-jh.lin@...iatek.com>, <roy-cw.yeh@...iatek.com>,
<river.cheng@...iatek.com>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v17 1/6] soc: mediatek: mutex: add common interface for modules setting
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>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
drivers/soc/mediatek/mtk-mutex.c | 88 ++++++++++++++++++++++++++
include/linux/soc/mediatek/mtk-mutex.h | 22 +++++++
2 files changed, 110 insertions(+)
diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index aaf8fc1abb43..a62ac1811419 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -156,6 +156,8 @@ struct mtk_mutex_data {
const unsigned int *mutex_sof;
const unsigned int mutex_mod_reg;
const unsigned int mutex_sof_reg;
+ const unsigned int *mutex_table_mod;
+ const unsigned int *mutex_table_sof;
const bool no_clk;
};
@@ -530,6 +532,92 @@ void mtk_mutex_release(struct mtk_mutex *mutex)
}
EXPORT_SYMBOL_GPL(mtk_mutex_release);
+static int mtk_mutex_write_mod(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx, bool clear)
+{
+ 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) {
+ dev_err(mtx->dev, "Not supported MOD table index : %d", idx);
+ return -EINVAL;
+ }
+
+ offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
+ mutex->id);
+ reg = readl_relaxed(mtx->regs + offset);
+
+ if (clear)
+ reg &= ~BIT(mtx->data->mutex_table_mod[idx]);
+ else
+ reg |= BIT(mtx->data->mutex_table_mod[idx]);
+
+ writel_relaxed(reg, mtx->regs + offset);
+
+ return 0;
+}
+
+int mtk_mutex_set_mod(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx)
+{
+ return mtk_mutex_write_mod(mutex, idx, false);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_set_mod);
+
+int mtk_mutex_clear_mod(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx)
+{
+ return mtk_mutex_write_mod(mutex, idx, true);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_clear_mod);
+
+int mtk_mutex_write_sof(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx, bool clear)
+{
+ struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+ mutex[mutex->id]);
+ unsigned int sof_id, val;
+
+ WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+ if (idx < MUTEX_TABLE_IDX_MDP_RDMA0 ||
+ idx >= MUTEX_TABLE_IDX_MAX) {
+ dev_err(mtx->dev, "Not supported SOF table index : %d", idx);
+ return -EINVAL;
+ }
+
+ sof_id = mtx->data->mutex_table_sof[idx];
+
+ if (clear)
+ val = MUTEX_SOF_SINGLE_MODE;
+ else
+ val = mtx->data->mutex_sof[sof_id];
+
+ writel_relaxed(val, mtx->regs +
+ DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id));
+
+ return 0;
+}
+
+int mtk_mutex_set_sof(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx)
+{
+ return mtk_mutex_write_sof(mutex, idx, false);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_set_sof);
+
+int mtk_mutex_clear_sof(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx)
+{
+ return mtk_mutex_write_sof(mutex, idx, true);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_clear_sof);
+
static int mtk_mutex_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
diff --git a/include/linux/soc/mediatek/mtk-mutex.h b/include/linux/soc/mediatek/mtk-mutex.h
index 6fe4ffbde290..f174452212d6 100644
--- a/include/linux/soc/mediatek/mtk-mutex.h
+++ b/include/linux/soc/mediatek/mtk-mutex.h
@@ -10,6 +10,20 @@ 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,
@@ -22,5 +36,13 @@ void mtk_mutex_unprepare(struct mtk_mutex *mutex);
void mtk_mutex_put(struct mtk_mutex *mutex);
void mtk_mutex_acquire(struct mtk_mutex *mutex);
void mtk_mutex_release(struct mtk_mutex *mutex);
+int mtk_mutex_set_mod(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx);
+int mtk_mutex_clear_mod(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx);
+int mtk_mutex_set_sof(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx);
+int mtk_mutex_clear_sof(struct mtk_mutex *mutex,
+ enum mtk_mutex_table_index idx);
#endif /* MTK_MUTEX_H */
--
2.18.0
Powered by blists - more mailing lists