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>,
Bibby Hsieh <bibby.hsieh@mediatek.com>,
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>,
<kendrick.hsu@mediatek.com>,
Frederic Chen <Frederic.Chen@mediatek.com>
Subject: [PATCH v4 10/12] soc: mediatek: cmdq: add cmdq_dev_get_subsys function
Date: Mon, 15 Apr 2019 20:58:31 +0800 [thread overview]
Message-ID: <20190415125833.38704-11-bibby.hsieh@mediatek.com> (raw)
In-Reply-To: <20190415125833.38704-1-bibby.hsieh@mediatek.com>
GCE cannot know the register base address, this function
can help cmdq client to get the relationship of subsys
and register base address.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
---
drivers/soc/mediatek/mtk-cmdq-helper.c | 25 +++++++++++++++++++++++++
include/linux/soc/mediatek/mtk-cmdq.h | 18 ++++++++++++++++++
2 files changed, 43 insertions(+)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 80856b8c2385..d86f800d40dc 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -47,6 +47,31 @@ static void cmdq_pkt_instr_encoder(struct cmdq_pkt *pkt, s16 arg_c, s16 arg_b,
pkt->cmd_buf_size += CMDQ_INST_SIZE;
}
+struct cmdq_subsys *cmdq_dev_get_subsys(struct device *dev, int idx)
+{
+ struct cmdq_subsys *subsys;
+ struct of_phandle_args spec;
+
+ subsys = devm_kzalloc(dev, sizeof(*subsys), GFP_KERNEL);
+ if (!subsys)
+ return NULL;
+
+ if (of_parse_phandle_with_args(dev->of_node, "mediatek,gce-client-reg",
+ "#subsys-cells", idx, &spec)) {
+ dev_err(dev, "can't parse gce-client-reg property");
+
+ return (struct cmdq_subsys *)-ENODEV;
+ }
+
+ subsys->id = spec.args[0];
+ subsys->offset = spec.args[1];
+ subsys->size = spec.args[2];
+ of_node_put(spec.np);
+
+ return subsys;
+}
+EXPORT_SYMBOL(cmdq_dev_get_subsys);
+
static void cmdq_client_timeout(struct timer_list *t)
{
struct cmdq_client *client = from_timer(client, t, timer);
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 0651a0bffa54..574006c5cd76 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -15,6 +15,12 @@
struct cmdq_pkt;
+struct cmdq_subsys {
+ u8 id;
+ u16 offset;
+ u16 size;
+};
+
struct cmdq_client {
spinlock_t lock;
u32 pkt_cnt;
@@ -142,4 +148,16 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
*/
int cmdq_pkt_flush(struct cmdq_pkt *pkt);
+/**
+ * cmdq_dev_get_subsys() - parse sub system from the device node of CMDQ client
+ * @dev: device of CMDQ mailbox client
+ * @idx: the index of desired subsys
+ *
+ * Return: CMDQ subsys pointer
+ *
+ * Help CMDQ client pasing the sub system number
+ * from the device node of CMDQ client.
+ */
+struct cmdq_subsys *cmdq_dev_get_subsys(struct device *dev, int idx);
+
#endif /* __MTK_CMDQ_H__ */
--
2.18.0
next prev parent reply other threads:[~2019-04-15 12:58 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 12:58 [PATCH v4 00/12] support gce on mt8183 platform Bibby Hsieh
2019-04-15 12:58 ` [PATCH v4 01/12] dt-binding: gce: remove thread-num property Bibby Hsieh
2019-04-24 19:50 ` Rob Herring
2019-04-15 12:58 ` [PATCH v4 02/12] dt-binding: gce: add gce header file for mt8183 Bibby Hsieh
2019-04-15 12:58 ` [PATCH v4 03/12] dt-binding: gce: add binding for gce event property Bibby Hsieh
2019-04-24 19:56 ` Rob Herring
2019-04-15 12:58 ` [PATCH v4 04/12] dt-binding: gce: add binding for gce subsys property Bibby Hsieh
2019-04-15 12:58 ` [PATCH v4 05/12] soc: mediatek: cmdq: move the CMDQ_IRQ_MASK into cmdq driver data Bibby Hsieh
2019-04-22 3:51 ` CK Hu
2019-04-23 14:39 ` Matthias Brugger
2019-04-15 12:58 ` [PATCH v4 06/12] soc: mediatek: cmdq: support mt8183 gce function Bibby Hsieh
2019-04-22 3:53 ` CK Hu
2019-04-15 12:58 ` [PATCH v4 07/12] soc: mediatek: cmdq: clear the event in cmdq initial flow Bibby Hsieh
2019-04-22 4:10 ` CK Hu
2019-04-15 12:58 ` [PATCH v4 08/12] soc: mediatek: cmdq: add packet encoder function Bibby Hsieh
2019-04-22 5:31 ` CK Hu
2019-04-15 12:58 ` [PATCH v4 09/12] soc: mediatek: cmdq: add polling function Bibby Hsieh
2019-04-23 15:25 ` Dennis-YC Hsieh
2019-04-15 12:58 ` Bibby Hsieh [this message]
2019-04-15 12:58 ` [PATCH v4 11/12] soc: mediatek: cmdq: add cmdq_dev_get_event function Bibby Hsieh
2019-04-15 12:58 ` [PATCH v4 12/12] arm64: dts: add gce node for mt8183 Bibby Hsieh
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