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Lin" , Singo Chang , "Nancy Lin" , Shawn Sung , , , , Subject: [PATCH 4/5] soc: mediatek: mtk-cmdq: Add cmdq_pkt_acquire_event() function Date: Fri, 1 Mar 2024 19:11:25 +0800 Message-ID: <20240301111126.22035-5-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20240301111126.22035-1-jason-jh.lin@mediatek.com> References: <20240301111126.22035-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--2.904900-8.000000 X-TMASE-MatchedRID: llTo18AJfvFYXTxImR5ZvLmIzqGFh/g8Xru95hSuhjQGW3hFnC9N1ayR DZpBnTnXX7ScFOAZsbSZymPU+pWEZ6Q4hw3fFG5zXSKcwPTzq/IhotH7bEpEMkYvSDWdWaRhcHj giTON9jLAsw00iUcvQv0h3e0v6EXCUBXVAm5W8RAbmaDSnOqZfsSgMQYKGHsJM6179UxzfjlCFt xLdA8EDuLzNWBegCW2wgn7iDBesS0nRE+fI6etkqQVJm8UX/I+1PbVTvjrX7SVbf5EccAu3cf5t cGdPaGDfONGJh0XykOuFgtX4tvltd/n8sBhKmAMw26jNhXEhXHyyMgM8a+L0YCE5xpCtDRTUbJF yh4XXyqYo/TPOlMB4bCh3zE4wqa8DUCRr8oin+k= X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--2.904900-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 5A2AF9094C510743033CB018B974CC720722A3FB2D7EA8B6E88EA28690F1A4362000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240301_031220_249030_74CD07F8 X-CRM114-Status: GOOD ( 11.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add cmdq_pkt_acquire_event() function to support CMDQ user making an instruction for acquiring event. CMDQ users can use cmdq_pkt_acquire_event() and cmdq_pkt_clear_event() to acquire GCE event and release GCE event and achieve the MUTEX_LOCK protection between GCE threads. Signed-off-by: Jason-JH.Lin Change-Id: Icdae6b60345c7ec1d7541ac76d1f06da56959cde --- drivers/soc/mediatek/mtk-cmdq-helper.c | 15 +++++++++++++++ include/linux/soc/mediatek/mtk-cmdq.h | 9 +++++++++ 2 files changed, 24 insertions(+) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 2e9fc9bb1183..0183b40a0eff 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -342,6 +342,21 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event, bool clear) } EXPORT_SYMBOL(cmdq_pkt_wfe); +int cmdq_pkt_acquire_event(struct cmdq_pkt *pkt, u16 event) +{ + struct cmdq_instruction inst = {}; + + if (event >= CMDQ_MAX_EVENT) + return -EINVAL; + + inst.op = CMDQ_CODE_WFE; + inst.value = CMDQ_WFE_UPDATE | CMDQ_WFE_UPDATE_VALUE | CMDQ_WFE_WAIT; + inst.event = event; + + return cmdq_pkt_append_command(pkt, inst); +} +EXPORT_SYMBOL(cmdq_pkt_acquire_event); + int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) { struct cmdq_instruction inst = { {0} }; diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 2fe9be240fbc..de93c0a8e8a9 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -202,6 +202,15 @@ int cmdq_pkt_mem_move(struct cmdq_pkt *pkt, dma_addr_t src_addr, dma_addr_t dst_ */ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event, bool clear); +/** + * cmdq_pkt_acquire_event() - append acquire event command to the CMDQ packet + * @pkt: the CMDQ packet + * @event: the desired event to be acquired + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_acquire_event(struct cmdq_pkt *pkt, u16 event); + /** * cmdq_pkt_clear_event() - append clear event command to the CMDQ packet * @pkt: the CMDQ packet