From: Bibby Hsieh <bibby.hsieh@mediatek.com>
To: Jassi Brar <jassisinghbrar@gmail.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Rob Herring <robh+dt@kernel.org>, CK HU <ck.hu@mediatek.com>
Cc: Daniel Kurtz <djkurtz@chromium.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<srv_heupstream@mediatek.com>,
Sascha Hauer <kernel@pengutronix.de>,
Philipp Zabel <p.zabel@pengutronix.de>,
Nicolas Boichat <drinkcat@chromium.org>,
YT Shen <yt.shen@mediatek.com>,
Daoyuan Huang <daoyuan.huang@mediatek.com>,
Jiaguang Zhang <jiaguang.zhang@mediatek.com>,
Dennis-YC Hsieh <dennis-yc.hsieh@mediatek.com>,
Houlong Wei <houlong.wei@mediatek.com>, <ginny.chen@mediatek.com>,
Bibby Hsieh <bibby.hsieh@mediatek.com>
Subject: [PATCH v10 10/12] soc: mediatek: cmdq: add polling function
Date: Mon, 1 Jul 2019 15:48:40 +0800 [thread overview]
Message-ID: <20190701074842.15401-11-bibby.hsieh@mediatek.com> (raw)
In-Reply-To: <20190701074842.15401-1-bibby.hsieh@mediatek.com>
add polling function in cmdq helper functions
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
---
drivers/soc/mediatek/mtk-cmdq-helper.c | 28 ++++++++++++++++++++++++
include/linux/mailbox/mtk-cmdq-mailbox.h | 1 +
include/linux/soc/mediatek/mtk-cmdq.h | 15 +++++++++++++
3 files changed, 44 insertions(+)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 0886c4967ca4..70ad4d806fac 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -220,6 +220,34 @@ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event)
}
EXPORT_SYMBOL(cmdq_pkt_clear_event);
+int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
+ u16 offset, u32 value, u32 mask)
+{
+ struct cmdq_instruction *inst;
+
+ if (mask != 0xffffffff) {
+ inst = cmdq_pkt_append_command(pkt);
+ if (!inst)
+ return -ENOMEM;
+
+ inst->op = CMDQ_CODE_MASK;
+ inst->value = ~mask;
+ offset = offset | 0x1;
+ }
+
+ inst = cmdq_pkt_append_command(pkt);
+ if (!inst)
+ return -ENOMEM;
+
+ inst->op = CMDQ_CODE_POLL;
+ inst->value = value;
+ inst->offset = offset;
+ inst->subsys = subsys;
+
+ return 0;
+}
+EXPORT_SYMBOL(cmdq_pkt_poll);
+
static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
{
struct cmdq_instruction *inst;
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
index c8adedefaf42..9e3502945bc1 100644
--- a/include/linux/mailbox/mtk-cmdq-mailbox.h
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -46,6 +46,7 @@
enum cmdq_code {
CMDQ_CODE_MASK = 0x02,
CMDQ_CODE_WRITE = 0x04,
+ CMDQ_CODE_POLL = 0x08,
CMDQ_CODE_JUMP = 0x10,
CMDQ_CODE_WFE = 0x20,
CMDQ_CODE_EOC = 0x40,
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 9618debb9ceb..a345870a6d10 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -99,6 +99,21 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event);
*/
int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event);
+/**
+ * cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to
+ * execute an instruction that wait for a specified hardware
+ * register to check for the value. All GCE hardware
+ * threads will be blocked by this instruction.
+ * @pkt: the CMDQ packet
+ * @subsys: the CMDQ sub system code
+ * @offset: register offset from CMDQ sub system
+ * @value: the specified target register value
+ * @mask: the specified target register mask
+ *
+ * Return: 0 for success; else the error code is returned
+ */
+int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
+ u16 offset, u32 value, u32 mask);
/**
* cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
* packet and call back at the end of done packet
--
2.18.0
next prev parent reply other threads:[~2019-07-01 7:49 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 7:48 [PATCH v10 00/12] support gce on mt8183 platform Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 01/12] dt-binding: gce: remove thread-num property Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 02/12] dt-binding: gce: add gce header file for mt8183 Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 03/12] dt-binding: gce: add binding for gce client reg property Bibby Hsieh
2019-07-02 3:14 ` Bibby Hsieh
2019-07-10 6:39 ` Bibby Hsieh
2019-07-22 22:09 ` Rob Herring
2019-07-01 7:48 ` [PATCH v10 04/12] mailbox: mediatek: cmdq: move the CMDQ_IRQ_MASK into cmdq driver data Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 05/12] mailbox: mediatek: cmdq: support mt8183 gce function Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 06/12] soc: mediatek: cmdq: clear the event in cmdq initial flow Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 07/12] soc: mediatek: cmdq: reorder the parameter Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 08/12] soc: mediatek: cmdq: change the type of input parameter Bibby Hsieh
2019-07-01 7:48 ` [PATCH v10 09/12] soc: mediatek: cmdq: define the instruction struct Bibby Hsieh
2019-07-01 7:48 ` Bibby Hsieh [this message]
2019-07-01 7:48 ` [PATCH v10 11/12] soc: mediatek: cmdq: add cmdq_dev_get_client_reg function Bibby Hsieh
2019-07-01 8:07 ` CK Hu
2019-07-01 7:48 ` [PATCH v10 12/12] arm64: dts: add gce node for mt8183 Bibby Hsieh
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