* [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-04-07 13:03 ` Allen-KH Cheng
0 siblings, 0 replies; 26+ messages in thread
From: Allen-KH Cheng @ 2022-04-07 13:03 UTC (permalink / raw)
To: Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware,
Allen-KH Cheng, Allen-KH Cheng
From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
Some of mediatek processors contain
the Tensilica HiFix DSP for audio processing.
The communication between Host CPU and DSP firmware is
taking place using a shared memory area for message passing.
ADSP IPC protocol offers (send/recv) interfaces using
mediatek-mailbox APIs.
We use two mbox channels to implement a request-reply protocol.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Reviewed-by: YC Hung <yc.hung@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/mediatek/Kconfig | 9 +
drivers/firmware/mediatek/Makefile | 2 +
drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
.../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
6 files changed, 239 insertions(+)
create mode 100644 drivers/firmware/mediatek/Kconfig
create mode 100644 drivers/firmware/mediatek/Makefile
create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index e5cfb01353d8..605ae3f47adc 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -300,6 +300,7 @@ source "drivers/firmware/cirrus/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
source "drivers/firmware/imx/Kconfig"
+source "drivers/firmware/mediatek/Kconfig"
source "drivers/firmware/meson/Kconfig"
source "drivers/firmware/psci/Kconfig"
source "drivers/firmware/smccc/Kconfig"
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 4e58cb474a68..88fbdc110100 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
obj-y += imx/
+obj-y += mediatek/
obj-y += psci/
obj-y += smccc/
obj-y += tegra/
diff --git a/drivers/firmware/mediatek/Kconfig b/drivers/firmware/mediatek/Kconfig
new file mode 100644
index 000000000000..6d1e580b967b
--- /dev/null
+++ b/drivers/firmware/mediatek/Kconfig
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config MTK_ADSP_IPC
+ tristate "MTK ADSP IPC Protocol driver"
+ depends on MTK_ADSP_MBOX
+ help
+ Say yes here to add support for the MediaTek ADSP IPC
+ between host AP (Linux) and the firmware running on ADSP.
+ ADSP exists on some mtk processors.
+ Client might use shared memory to exchange information with ADSP side.
diff --git a/drivers/firmware/mediatek/Makefile b/drivers/firmware/mediatek/Makefile
new file mode 100644
index 000000000000..4e840b65650d
--- /dev/null
+++ b/drivers/firmware/mediatek/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c b/drivers/firmware/mediatek/mtk-adsp-ipc.c
new file mode 100644
index 000000000000..87cee61dbf32
--- /dev/null
+++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
+ * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
+ */
+
+#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
+#include <linux/kernel.h>
+#include <linux/mailbox_client.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+/*
+ * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
+ *
+ * @ipc: ADSP IPC handle
+ * @idx: index of the mailbox channel
+ * @msg: IPC cmd (reply or request)
+ *
+ * Returns zero for success from mbox_send_message
+ * negative value for error
+ */
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg)
+{
+ struct mtk_adsp_chan *adsp_chan;
+ int ret;
+
+ if (idx >= MTK_ADSP_MBOX_NUM)
+ return -EINVAL;
+
+ adsp_chan = &ipc->chans[idx];
+ ret = mbox_send_message(adsp_chan->ch, &msg);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * mbox_send_message returns non-negative value on success,
+ * return zero for success
+ */
+ return 0;
+}
+EXPORT_SYMBOL(mtk_adsp_ipc_send);
+
+/*
+ * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
+ *
+ * @c: mbox client
+ * @msg: message received
+ *
+ * Users of ADSP IPC will need to privde handle_reply and handle_request
+ * callbacks.
+ */
+static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
+{
+ struct mtk_adsp_chan *chan = container_of(c, struct mtk_adsp_chan, cl);
+ struct device *dev = c->dev;
+
+ switch (chan->idx) {
+ case MTK_ADSP_MBOX_REPLY:
+ chan->ipc->ops->handle_reply(chan->ipc);
+ break;
+ case MTK_ADSP_MBOX_REQUEST:
+ chan->ipc->ops->handle_request(chan->ipc);
+ break;
+ default:
+ dev_err(dev, "wrong mbox chan %d\n", chan->idx);
+ break;
+ }
+}
+
+static int mtk_adsp_ipc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_adsp_ipc *adsp_ipc;
+ struct mtk_adsp_chan *adsp_chan;
+ struct mbox_client *cl;
+ char *chan_name;
+ int ret;
+ int i, j;
+
+ device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
+ adsp_ipc = devm_kzalloc(dev, sizeof(*adsp_ipc), GFP_KERNEL);
+ if (!adsp_ipc)
+ return -ENOMEM;
+
+ for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
+ chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
+ if (!chan_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ adsp_chan = &adsp_ipc->chans[i];
+ cl = &adsp_chan->cl;
+ cl->dev = dev->parent;
+ cl->tx_block = false;
+ cl->knows_txdone = false;
+ cl->tx_prepare = NULL;
+ cl->rx_callback = mtk_adsp_ipc_recv;
+
+ adsp_chan->ipc = adsp_ipc;
+ adsp_chan->idx = i;
+ adsp_chan->ch = mbox_request_channel_byname(cl, chan_name);
+ if (IS_ERR(adsp_chan->ch)) {
+ ret = PTR_ERR(adsp_chan->ch);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request mbox chan %d ret %d\n",
+ i, ret);
+ goto out_free;
+ }
+
+ dev_dbg(dev, "request mbox chan %s\n", chan_name);
+ kfree(chan_name);
+ }
+
+ adsp_ipc->dev = dev;
+ dev_set_drvdata(dev, adsp_ipc);
+ dev_dbg(dev, "MTK ADSP IPC initialized\n");
+
+ return 0;
+
+out_free:
+ kfree(chan_name);
+out:
+ for (j = 0; j < i; j++) {
+ adsp_chan = &adsp_ipc->chans[j];
+ mbox_free_channel(adsp_chan->ch);
+ }
+
+ return ret;
+}
+
+static int mtk_adsp_ipc_remove(struct platform_device *pdev)
+{
+ struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);
+ struct mtk_adsp_chan *adsp_chan;
+ int i;
+
+ for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
+ adsp_chan = &adsp_ipc->chans[i];
+ mbox_free_channel(adsp_chan->ch);
+ }
+
+ return 0;
+}
+
+static struct platform_driver mtk_adsp_ipc_driver = {
+ .driver = {
+ .name = "mtk-adsp-ipc",
+ },
+ .probe = mtk_adsp_ipc_probe,
+ .remove = mtk_adsp_ipc_remove,
+};
+builtin_platform_driver(mtk_adsp_ipc_driver);
+
+MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng@mediatek.com>");
+MODULE_DESCRIPTION("MTK ADSP IPC Driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
new file mode 100644
index 000000000000..28fd313340b8
--- /dev/null
+++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ */
+
+#ifndef MTK_ADSP_IPC_H
+#define MTK_ADSP_IPC_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/mailbox_controller.h>
+#include <linux/mailbox_client.h>
+
+#define MTK_ADSP_IPC_REQ 0
+#define MTK_ADSP_IPC_RSP 1
+#define MTK_ADSP_IPC_OP_REQ 0x1
+#define MTK_ADSP_IPC_OP_RSP 0x2
+
+enum {
+ MTK_ADSP_MBOX_REPLY,
+ MTK_ADSP_MBOX_REQUEST,
+ MTK_ADSP_MBOX_NUM,
+};
+
+struct mtk_adsp_ipc;
+
+struct mtk_adsp_ipc_ops {
+ void (*handle_reply)(struct mtk_adsp_ipc *ipc);
+ void (*handle_request)(struct mtk_adsp_ipc *ipc);
+};
+
+struct mtk_adsp_chan {
+ struct mtk_adsp_ipc *ipc;
+ struct mbox_client cl;
+ struct mbox_chan *ch;
+ char *name;
+ int idx;
+};
+
+struct mtk_adsp_ipc {
+ struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
+ struct device *dev;
+ struct mtk_adsp_ipc_ops *ops;
+ void *private_data;
+};
+
+static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data)
+{
+ if (!ipc)
+ return;
+
+ ipc->private_data = data;
+}
+
+static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
+{
+ if (!ipc)
+ return NULL;
+
+ return ipc->private_data;
+}
+
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t op);
+
+#endif /* MTK_ADSP_IPC_H */
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-04-07 13:03 ` Allen-KH Cheng
0 siblings, 0 replies; 26+ messages in thread
From: Allen-KH Cheng @ 2022-04-07 13:03 UTC (permalink / raw)
To: Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware,
Allen-KH Cheng, Allen-KH Cheng
From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
Some of mediatek processors contain
the Tensilica HiFix DSP for audio processing.
The communication between Host CPU and DSP firmware is
taking place using a shared memory area for message passing.
ADSP IPC protocol offers (send/recv) interfaces using
mediatek-mailbox APIs.
We use two mbox channels to implement a request-reply protocol.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Reviewed-by: YC Hung <yc.hung@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/mediatek/Kconfig | 9 +
drivers/firmware/mediatek/Makefile | 2 +
drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
.../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
6 files changed, 239 insertions(+)
create mode 100644 drivers/firmware/mediatek/Kconfig
create mode 100644 drivers/firmware/mediatek/Makefile
create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index e5cfb01353d8..605ae3f47adc 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -300,6 +300,7 @@ source "drivers/firmware/cirrus/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
source "drivers/firmware/imx/Kconfig"
+source "drivers/firmware/mediatek/Kconfig"
source "drivers/firmware/meson/Kconfig"
source "drivers/firmware/psci/Kconfig"
source "drivers/firmware/smccc/Kconfig"
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 4e58cb474a68..88fbdc110100 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
obj-y += imx/
+obj-y += mediatek/
obj-y += psci/
obj-y += smccc/
obj-y += tegra/
diff --git a/drivers/firmware/mediatek/Kconfig b/drivers/firmware/mediatek/Kconfig
new file mode 100644
index 000000000000..6d1e580b967b
--- /dev/null
+++ b/drivers/firmware/mediatek/Kconfig
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config MTK_ADSP_IPC
+ tristate "MTK ADSP IPC Protocol driver"
+ depends on MTK_ADSP_MBOX
+ help
+ Say yes here to add support for the MediaTek ADSP IPC
+ between host AP (Linux) and the firmware running on ADSP.
+ ADSP exists on some mtk processors.
+ Client might use shared memory to exchange information with ADSP side.
diff --git a/drivers/firmware/mediatek/Makefile b/drivers/firmware/mediatek/Makefile
new file mode 100644
index 000000000000..4e840b65650d
--- /dev/null
+++ b/drivers/firmware/mediatek/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c b/drivers/firmware/mediatek/mtk-adsp-ipc.c
new file mode 100644
index 000000000000..87cee61dbf32
--- /dev/null
+++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
+ * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
+ */
+
+#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
+#include <linux/kernel.h>
+#include <linux/mailbox_client.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+/*
+ * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
+ *
+ * @ipc: ADSP IPC handle
+ * @idx: index of the mailbox channel
+ * @msg: IPC cmd (reply or request)
+ *
+ * Returns zero for success from mbox_send_message
+ * negative value for error
+ */
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg)
+{
+ struct mtk_adsp_chan *adsp_chan;
+ int ret;
+
+ if (idx >= MTK_ADSP_MBOX_NUM)
+ return -EINVAL;
+
+ adsp_chan = &ipc->chans[idx];
+ ret = mbox_send_message(adsp_chan->ch, &msg);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * mbox_send_message returns non-negative value on success,
+ * return zero for success
+ */
+ return 0;
+}
+EXPORT_SYMBOL(mtk_adsp_ipc_send);
+
+/*
+ * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
+ *
+ * @c: mbox client
+ * @msg: message received
+ *
+ * Users of ADSP IPC will need to privde handle_reply and handle_request
+ * callbacks.
+ */
+static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
+{
+ struct mtk_adsp_chan *chan = container_of(c, struct mtk_adsp_chan, cl);
+ struct device *dev = c->dev;
+
+ switch (chan->idx) {
+ case MTK_ADSP_MBOX_REPLY:
+ chan->ipc->ops->handle_reply(chan->ipc);
+ break;
+ case MTK_ADSP_MBOX_REQUEST:
+ chan->ipc->ops->handle_request(chan->ipc);
+ break;
+ default:
+ dev_err(dev, "wrong mbox chan %d\n", chan->idx);
+ break;
+ }
+}
+
+static int mtk_adsp_ipc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_adsp_ipc *adsp_ipc;
+ struct mtk_adsp_chan *adsp_chan;
+ struct mbox_client *cl;
+ char *chan_name;
+ int ret;
+ int i, j;
+
+ device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
+ adsp_ipc = devm_kzalloc(dev, sizeof(*adsp_ipc), GFP_KERNEL);
+ if (!adsp_ipc)
+ return -ENOMEM;
+
+ for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
+ chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
+ if (!chan_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ adsp_chan = &adsp_ipc->chans[i];
+ cl = &adsp_chan->cl;
+ cl->dev = dev->parent;
+ cl->tx_block = false;
+ cl->knows_txdone = false;
+ cl->tx_prepare = NULL;
+ cl->rx_callback = mtk_adsp_ipc_recv;
+
+ adsp_chan->ipc = adsp_ipc;
+ adsp_chan->idx = i;
+ adsp_chan->ch = mbox_request_channel_byname(cl, chan_name);
+ if (IS_ERR(adsp_chan->ch)) {
+ ret = PTR_ERR(adsp_chan->ch);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request mbox chan %d ret %d\n",
+ i, ret);
+ goto out_free;
+ }
+
+ dev_dbg(dev, "request mbox chan %s\n", chan_name);
+ kfree(chan_name);
+ }
+
+ adsp_ipc->dev = dev;
+ dev_set_drvdata(dev, adsp_ipc);
+ dev_dbg(dev, "MTK ADSP IPC initialized\n");
+
+ return 0;
+
+out_free:
+ kfree(chan_name);
+out:
+ for (j = 0; j < i; j++) {
+ adsp_chan = &adsp_ipc->chans[j];
+ mbox_free_channel(adsp_chan->ch);
+ }
+
+ return ret;
+}
+
+static int mtk_adsp_ipc_remove(struct platform_device *pdev)
+{
+ struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);
+ struct mtk_adsp_chan *adsp_chan;
+ int i;
+
+ for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
+ adsp_chan = &adsp_ipc->chans[i];
+ mbox_free_channel(adsp_chan->ch);
+ }
+
+ return 0;
+}
+
+static struct platform_driver mtk_adsp_ipc_driver = {
+ .driver = {
+ .name = "mtk-adsp-ipc",
+ },
+ .probe = mtk_adsp_ipc_probe,
+ .remove = mtk_adsp_ipc_remove,
+};
+builtin_platform_driver(mtk_adsp_ipc_driver);
+
+MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng@mediatek.com>");
+MODULE_DESCRIPTION("MTK ADSP IPC Driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
new file mode 100644
index 000000000000..28fd313340b8
--- /dev/null
+++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ */
+
+#ifndef MTK_ADSP_IPC_H
+#define MTK_ADSP_IPC_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/mailbox_controller.h>
+#include <linux/mailbox_client.h>
+
+#define MTK_ADSP_IPC_REQ 0
+#define MTK_ADSP_IPC_RSP 1
+#define MTK_ADSP_IPC_OP_REQ 0x1
+#define MTK_ADSP_IPC_OP_RSP 0x2
+
+enum {
+ MTK_ADSP_MBOX_REPLY,
+ MTK_ADSP_MBOX_REQUEST,
+ MTK_ADSP_MBOX_NUM,
+};
+
+struct mtk_adsp_ipc;
+
+struct mtk_adsp_ipc_ops {
+ void (*handle_reply)(struct mtk_adsp_ipc *ipc);
+ void (*handle_request)(struct mtk_adsp_ipc *ipc);
+};
+
+struct mtk_adsp_chan {
+ struct mtk_adsp_ipc *ipc;
+ struct mbox_client cl;
+ struct mbox_chan *ch;
+ char *name;
+ int idx;
+};
+
+struct mtk_adsp_ipc {
+ struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
+ struct device *dev;
+ struct mtk_adsp_ipc_ops *ops;
+ void *private_data;
+};
+
+static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data)
+{
+ if (!ipc)
+ return;
+
+ ipc->private_data = data;
+}
+
+static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
+{
+ if (!ipc)
+ return NULL;
+
+ return ipc->private_data;
+}
+
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t op);
+
+#endif /* MTK_ADSP_IPC_H */
--
2.18.0
_______________________________________________
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Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 26+ messages in thread* [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-04-07 13:03 ` Allen-KH Cheng
0 siblings, 0 replies; 26+ messages in thread
From: Allen-KH Cheng @ 2022-04-07 13:03 UTC (permalink / raw)
To: Matthias Brugger, Mark Brown
Cc: linux-arm-kernel, devicetree, Linux-ALSA, Allen-KH Cheng,
Kai Vehmanen, cujomalainey, Kevin Hilman, Takashi Iwai,
Pierre-Louis Bossart, Liam Girdwood,
Project_Global_Chrome_Upstream_Group, tzungbi, linux-mediatek,
Ranjani Sridharan, Chen-Yu Tsai, Daniel Baluta, linux-kernel,
sound-open-firmware
From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
Some of mediatek processors contain
the Tensilica HiFix DSP for audio processing.
The communication between Host CPU and DSP firmware is
taking place using a shared memory area for message passing.
ADSP IPC protocol offers (send/recv) interfaces using
mediatek-mailbox APIs.
We use two mbox channels to implement a request-reply protocol.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Reviewed-by: YC Hung <yc.hung@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/mediatek/Kconfig | 9 +
drivers/firmware/mediatek/Makefile | 2 +
drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
.../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
6 files changed, 239 insertions(+)
create mode 100644 drivers/firmware/mediatek/Kconfig
create mode 100644 drivers/firmware/mediatek/Makefile
create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index e5cfb01353d8..605ae3f47adc 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -300,6 +300,7 @@ source "drivers/firmware/cirrus/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
source "drivers/firmware/imx/Kconfig"
+source "drivers/firmware/mediatek/Kconfig"
source "drivers/firmware/meson/Kconfig"
source "drivers/firmware/psci/Kconfig"
source "drivers/firmware/smccc/Kconfig"
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 4e58cb474a68..88fbdc110100 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
obj-y += imx/
+obj-y += mediatek/
obj-y += psci/
obj-y += smccc/
obj-y += tegra/
diff --git a/drivers/firmware/mediatek/Kconfig b/drivers/firmware/mediatek/Kconfig
new file mode 100644
index 000000000000..6d1e580b967b
--- /dev/null
+++ b/drivers/firmware/mediatek/Kconfig
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config MTK_ADSP_IPC
+ tristate "MTK ADSP IPC Protocol driver"
+ depends on MTK_ADSP_MBOX
+ help
+ Say yes here to add support for the MediaTek ADSP IPC
+ between host AP (Linux) and the firmware running on ADSP.
+ ADSP exists on some mtk processors.
+ Client might use shared memory to exchange information with ADSP side.
diff --git a/drivers/firmware/mediatek/Makefile b/drivers/firmware/mediatek/Makefile
new file mode 100644
index 000000000000..4e840b65650d
--- /dev/null
+++ b/drivers/firmware/mediatek/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c b/drivers/firmware/mediatek/mtk-adsp-ipc.c
new file mode 100644
index 000000000000..87cee61dbf32
--- /dev/null
+++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
+ * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
+ */
+
+#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
+#include <linux/kernel.h>
+#include <linux/mailbox_client.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+/*
+ * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
+ *
+ * @ipc: ADSP IPC handle
+ * @idx: index of the mailbox channel
+ * @msg: IPC cmd (reply or request)
+ *
+ * Returns zero for success from mbox_send_message
+ * negative value for error
+ */
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg)
+{
+ struct mtk_adsp_chan *adsp_chan;
+ int ret;
+
+ if (idx >= MTK_ADSP_MBOX_NUM)
+ return -EINVAL;
+
+ adsp_chan = &ipc->chans[idx];
+ ret = mbox_send_message(adsp_chan->ch, &msg);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * mbox_send_message returns non-negative value on success,
+ * return zero for success
+ */
+ return 0;
+}
+EXPORT_SYMBOL(mtk_adsp_ipc_send);
+
+/*
+ * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
+ *
+ * @c: mbox client
+ * @msg: message received
+ *
+ * Users of ADSP IPC will need to privde handle_reply and handle_request
+ * callbacks.
+ */
+static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
+{
+ struct mtk_adsp_chan *chan = container_of(c, struct mtk_adsp_chan, cl);
+ struct device *dev = c->dev;
+
+ switch (chan->idx) {
+ case MTK_ADSP_MBOX_REPLY:
+ chan->ipc->ops->handle_reply(chan->ipc);
+ break;
+ case MTK_ADSP_MBOX_REQUEST:
+ chan->ipc->ops->handle_request(chan->ipc);
+ break;
+ default:
+ dev_err(dev, "wrong mbox chan %d\n", chan->idx);
+ break;
+ }
+}
+
+static int mtk_adsp_ipc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_adsp_ipc *adsp_ipc;
+ struct mtk_adsp_chan *adsp_chan;
+ struct mbox_client *cl;
+ char *chan_name;
+ int ret;
+ int i, j;
+
+ device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
+ adsp_ipc = devm_kzalloc(dev, sizeof(*adsp_ipc), GFP_KERNEL);
+ if (!adsp_ipc)
+ return -ENOMEM;
+
+ for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
+ chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
+ if (!chan_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ adsp_chan = &adsp_ipc->chans[i];
+ cl = &adsp_chan->cl;
+ cl->dev = dev->parent;
+ cl->tx_block = false;
+ cl->knows_txdone = false;
+ cl->tx_prepare = NULL;
+ cl->rx_callback = mtk_adsp_ipc_recv;
+
+ adsp_chan->ipc = adsp_ipc;
+ adsp_chan->idx = i;
+ adsp_chan->ch = mbox_request_channel_byname(cl, chan_name);
+ if (IS_ERR(adsp_chan->ch)) {
+ ret = PTR_ERR(adsp_chan->ch);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to request mbox chan %d ret %d\n",
+ i, ret);
+ goto out_free;
+ }
+
+ dev_dbg(dev, "request mbox chan %s\n", chan_name);
+ kfree(chan_name);
+ }
+
+ adsp_ipc->dev = dev;
+ dev_set_drvdata(dev, adsp_ipc);
+ dev_dbg(dev, "MTK ADSP IPC initialized\n");
+
+ return 0;
+
+out_free:
+ kfree(chan_name);
+out:
+ for (j = 0; j < i; j++) {
+ adsp_chan = &adsp_ipc->chans[j];
+ mbox_free_channel(adsp_chan->ch);
+ }
+
+ return ret;
+}
+
+static int mtk_adsp_ipc_remove(struct platform_device *pdev)
+{
+ struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);
+ struct mtk_adsp_chan *adsp_chan;
+ int i;
+
+ for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
+ adsp_chan = &adsp_ipc->chans[i];
+ mbox_free_channel(adsp_chan->ch);
+ }
+
+ return 0;
+}
+
+static struct platform_driver mtk_adsp_ipc_driver = {
+ .driver = {
+ .name = "mtk-adsp-ipc",
+ },
+ .probe = mtk_adsp_ipc_probe,
+ .remove = mtk_adsp_ipc_remove,
+};
+builtin_platform_driver(mtk_adsp_ipc_driver);
+
+MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng@mediatek.com>");
+MODULE_DESCRIPTION("MTK ADSP IPC Driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
new file mode 100644
index 000000000000..28fd313340b8
--- /dev/null
+++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ */
+
+#ifndef MTK_ADSP_IPC_H
+#define MTK_ADSP_IPC_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/mailbox_controller.h>
+#include <linux/mailbox_client.h>
+
+#define MTK_ADSP_IPC_REQ 0
+#define MTK_ADSP_IPC_RSP 1
+#define MTK_ADSP_IPC_OP_REQ 0x1
+#define MTK_ADSP_IPC_OP_RSP 0x2
+
+enum {
+ MTK_ADSP_MBOX_REPLY,
+ MTK_ADSP_MBOX_REQUEST,
+ MTK_ADSP_MBOX_NUM,
+};
+
+struct mtk_adsp_ipc;
+
+struct mtk_adsp_ipc_ops {
+ void (*handle_reply)(struct mtk_adsp_ipc *ipc);
+ void (*handle_request)(struct mtk_adsp_ipc *ipc);
+};
+
+struct mtk_adsp_chan {
+ struct mtk_adsp_ipc *ipc;
+ struct mbox_client cl;
+ struct mbox_chan *ch;
+ char *name;
+ int idx;
+};
+
+struct mtk_adsp_ipc {
+ struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
+ struct device *dev;
+ struct mtk_adsp_ipc_ops *ops;
+ void *private_data;
+};
+
+static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data)
+{
+ if (!ipc)
+ return;
+
+ ipc->private_data = data;
+}
+
+static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
+{
+ if (!ipc)
+ return NULL;
+
+ return ipc->private_data;
+}
+
+int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t op);
+
+#endif /* MTK_ADSP_IPC_H */
--
2.18.0
^ permalink raw reply related [flat|nested] 26+ messages in thread* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
2022-04-07 13:03 ` Allen-KH Cheng
(?)
@ 2022-04-27 7:04 ` allen-kh.cheng
-1 siblings, 0 replies; 26+ messages in thread
From: allen-kh.cheng @ 2022-04-27 7:04 UTC (permalink / raw)
To: Matthias Brugger, Mark Brown
Cc: linux-arm-kernel, devicetree, Linux-ALSA, Kai Vehmanen,
cujomalainey, Kevin Hilman, Takashi Iwai, Pierre-Louis Bossart,
Liam Girdwood, Project_Global_Chrome_Upstream_Group, tzungbi,
linux-mediatek, Ranjani Sridharan, Chen-Yu Tsai, Daniel Baluta,
linux-kernel, sound-open-firmware
Hi Matthias,
Would you please take a look at it?
Thanks a lot,
Allen
On Thu, 2022-04-07 at 21:03 +0800, Allen-KH Cheng wrote:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <
> pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161
> ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
> index e5cfb01353d8..605ae3f47adc 100644
> --- a/drivers/firmware/Kconfig
> +++ b/drivers/firmware/Kconfig
> @@ -300,6 +300,7 @@ source "drivers/firmware/cirrus/Kconfig"
> source "drivers/firmware/google/Kconfig"
> source "drivers/firmware/efi/Kconfig"
> source "drivers/firmware/imx/Kconfig"
> +source "drivers/firmware/mediatek/Kconfig"
> source "drivers/firmware/meson/Kconfig"
> source "drivers/firmware/psci/Kconfig"
> source "drivers/firmware/smccc/Kconfig"
> diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
> index 4e58cb474a68..88fbdc110100 100644
> --- a/drivers/firmware/Makefile
> +++ b/drivers/firmware/Makefile
> @@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
> obj-$(CONFIG_EFI) += efi/
> obj-$(CONFIG_UEFI_CPER) += efi/
> obj-y += imx/
> +obj-y += mediatek/
> obj-y += psci/
> obj-y += smccc/
> obj-y += tegra/
> diff --git a/drivers/firmware/mediatek/Kconfig
> b/drivers/firmware/mediatek/Kconfig
> new file mode 100644
> index 000000000000..6d1e580b967b
> --- /dev/null
> +++ b/drivers/firmware/mediatek/Kconfig
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config MTK_ADSP_IPC
> + tristate "MTK ADSP IPC Protocol driver"
> + depends on MTK_ADSP_MBOX
> + help
> + Say yes here to add support for the MediaTek ADSP IPC
> + between host AP (Linux) and the firmware running on ADSP.
> + ADSP exists on some mtk processors.
> + Client might use shared memory to exchange information with
> ADSP side.
> diff --git a/drivers/firmware/mediatek/Makefile
> b/drivers/firmware/mediatek/Makefile
> new file mode 100644
> index 000000000000..4e840b65650d
> --- /dev/null
> +++ b/drivers/firmware/mediatek/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0
> +obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
> diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c
> b/drivers/firmware/mediatek/mtk-adsp-ipc.c
> new file mode 100644
> index 000000000000..87cee61dbf32
> --- /dev/null
> +++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c
> @@ -0,0 +1,161 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
> + * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> + */
> +
> +#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
> +#include <linux/kernel.h>
> +#include <linux/mailbox_client.h>
> +#include <linux/module.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +
> +/*
> + * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
> + *
> + * @ipc: ADSP IPC handle
> + * @idx: index of the mailbox channel
> + * @msg: IPC cmd (reply or request)
> + *
> + * Returns zero for success from mbox_send_message
> + * negative value for error
> + */
> +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx,
> uint32_t msg)
> +{
> + struct mtk_adsp_chan *adsp_chan;
> + int ret;
> +
> + if (idx >= MTK_ADSP_MBOX_NUM)
> + return -EINVAL;
> +
> + adsp_chan = &ipc->chans[idx];
> + ret = mbox_send_message(adsp_chan->ch, &msg);
> + if (ret < 0)
> + return ret;
> +
> + /*
> + * mbox_send_message returns non-negative value on success,
> + * return zero for success
> + */
> + return 0;
> +}
> +EXPORT_SYMBOL(mtk_adsp_ipc_send);
> +
> +/*
> + * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
> + *
> + * @c: mbox client
> + * @msg: message received
> + *
> + * Users of ADSP IPC will need to privde handle_reply and
> handle_request
> + * callbacks.
> + */
> +static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
> +{
> + struct mtk_adsp_chan *chan = container_of(c, struct
> mtk_adsp_chan, cl);
> + struct device *dev = c->dev;
> +
> + switch (chan->idx) {
> + case MTK_ADSP_MBOX_REPLY:
> + chan->ipc->ops->handle_reply(chan->ipc);
> + break;
> + case MTK_ADSP_MBOX_REQUEST:
> + chan->ipc->ops->handle_request(chan->ipc);
> + break;
> + default:
> + dev_err(dev, "wrong mbox chan %d\n", chan->idx);
> + break;
> + }
> +}
> +
> +static int mtk_adsp_ipc_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct mtk_adsp_ipc *adsp_ipc;
> + struct mtk_adsp_chan *adsp_chan;
> + struct mbox_client *cl;
> + char *chan_name;
> + int ret;
> + int i, j;
> +
> + device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
> +
> + adsp_ipc = devm_kzalloc(dev, sizeof(*adsp_ipc), GFP_KERNEL);
> + if (!adsp_ipc)
> + return -ENOMEM;
> +
> + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> + chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
> + if (!chan_name) {
> + ret = -ENOMEM;
> + goto out;
> + }
> +
> + adsp_chan = &adsp_ipc->chans[i];
> + cl = &adsp_chan->cl;
> + cl->dev = dev->parent;
> + cl->tx_block = false;
> + cl->knows_txdone = false;
> + cl->tx_prepare = NULL;
> + cl->rx_callback = mtk_adsp_ipc_recv;
> +
> + adsp_chan->ipc = adsp_ipc;
> + adsp_chan->idx = i;
> + adsp_chan->ch = mbox_request_channel_byname(cl,
> chan_name);
> + if (IS_ERR(adsp_chan->ch)) {
> + ret = PTR_ERR(adsp_chan->ch);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "Failed to request mbox
> chan %d ret %d\n",
> + i, ret);
> + goto out_free;
> + }
> +
> + dev_dbg(dev, "request mbox chan %s\n", chan_name);
> + kfree(chan_name);
> + }
> +
> + adsp_ipc->dev = dev;
> + dev_set_drvdata(dev, adsp_ipc);
> + dev_dbg(dev, "MTK ADSP IPC initialized\n");
> +
> + return 0;
> +
> +out_free:
> + kfree(chan_name);
> +out:
> + for (j = 0; j < i; j++) {
> + adsp_chan = &adsp_ipc->chans[j];
> + mbox_free_channel(adsp_chan->ch);
> + }
> +
> + return ret;
> +}
> +
> +static int mtk_adsp_ipc_remove(struct platform_device *pdev)
> +{
> + struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);
> + struct mtk_adsp_chan *adsp_chan;
> + int i;
> +
> + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> + adsp_chan = &adsp_ipc->chans[i];
> + mbox_free_channel(adsp_chan->ch);
> + }
> +
> + return 0;
> +}
> +
> +static struct platform_driver mtk_adsp_ipc_driver = {
> + .driver = {
> + .name = "mtk-adsp-ipc",
> + },
> + .probe = mtk_adsp_ipc_probe,
> + .remove = mtk_adsp_ipc_remove,
> +};
> +builtin_platform_driver(mtk_adsp_ipc_driver);
> +
> +MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng@mediatek.com>");
> +MODULE_DESCRIPTION("MTK ADSP IPC Driver");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> new file mode 100644
> index 000000000000..28fd313340b8
> --- /dev/null
> +++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> @@ -0,0 +1,65 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2022 MediaTek Inc.
> + */
> +
> +#ifndef MTK_ADSP_IPC_H
> +#define MTK_ADSP_IPC_H
> +
> +#include <linux/device.h>
> +#include <linux/types.h>
> +#include <linux/mailbox_controller.h>
> +#include <linux/mailbox_client.h>
> +
> +#define MTK_ADSP_IPC_REQ 0
> +#define MTK_ADSP_IPC_RSP 1
> +#define MTK_ADSP_IPC_OP_REQ 0x1
> +#define MTK_ADSP_IPC_OP_RSP 0x2
> +
> +enum {
> + MTK_ADSP_MBOX_REPLY,
> + MTK_ADSP_MBOX_REQUEST,
> + MTK_ADSP_MBOX_NUM,
> +};
> +
> +struct mtk_adsp_ipc;
> +
> +struct mtk_adsp_ipc_ops {
> + void (*handle_reply)(struct mtk_adsp_ipc *ipc);
> + void (*handle_request)(struct mtk_adsp_ipc *ipc);
> +};
> +
> +struct mtk_adsp_chan {
> + struct mtk_adsp_ipc *ipc;
> + struct mbox_client cl;
> + struct mbox_chan *ch;
> + char *name;
> + int idx;
> +};
> +
> +struct mtk_adsp_ipc {
> + struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
> + struct device *dev;
> + struct mtk_adsp_ipc_ops *ops;
> + void *private_data;
> +};
> +
> +static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc,
> void *data)
> +{
> + if (!ipc)
> + return;
> +
> + ipc->private_data = data;
> +}
> +
> +static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
> +{
> + if (!ipc)
> + return NULL;
> +
> + return ipc->private_data;
> +}
> +
> +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx,
> uint32_t op);
> +
> +#endif /* MTK_ADSP_IPC_H */
^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-04-27 7:04 ` allen-kh.cheng
0 siblings, 0 replies; 26+ messages in thread
From: allen-kh.cheng @ 2022-04-27 7:04 UTC (permalink / raw)
To: Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Hi Matthias,
Would you please take a look at it?
Thanks a lot,
Allen
On Thu, 2022-04-07 at 21:03 +0800, Allen-KH Cheng wrote:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <
> pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161
> ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
> index e5cfb01353d8..605ae3f47adc 100644
> --- a/drivers/firmware/Kconfig
> +++ b/drivers/firmware/Kconfig
> @@ -300,6 +300,7 @@ source "drivers/firmware/cirrus/Kconfig"
> source "drivers/firmware/google/Kconfig"
> source "drivers/firmware/efi/Kconfig"
> source "drivers/firmware/imx/Kconfig"
> +source "drivers/firmware/mediatek/Kconfig"
> source "drivers/firmware/meson/Kconfig"
> source "drivers/firmware/psci/Kconfig"
> source "drivers/firmware/smccc/Kconfig"
> diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
> index 4e58cb474a68..88fbdc110100 100644
> --- a/drivers/firmware/Makefile
> +++ b/drivers/firmware/Makefile
> @@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
> obj-$(CONFIG_EFI) += efi/
> obj-$(CONFIG_UEFI_CPER) += efi/
> obj-y += imx/
> +obj-y += mediatek/
> obj-y += psci/
> obj-y += smccc/
> obj-y += tegra/
> diff --git a/drivers/firmware/mediatek/Kconfig
> b/drivers/firmware/mediatek/Kconfig
> new file mode 100644
> index 000000000000..6d1e580b967b
> --- /dev/null
> +++ b/drivers/firmware/mediatek/Kconfig
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config MTK_ADSP_IPC
> + tristate "MTK ADSP IPC Protocol driver"
> + depends on MTK_ADSP_MBOX
> + help
> + Say yes here to add support for the MediaTek ADSP IPC
> + between host AP (Linux) and the firmware running on ADSP.
> + ADSP exists on some mtk processors.
> + Client might use shared memory to exchange information with
> ADSP side.
> diff --git a/drivers/firmware/mediatek/Makefile
> b/drivers/firmware/mediatek/Makefile
> new file mode 100644
> index 000000000000..4e840b65650d
> --- /dev/null
> +++ b/drivers/firmware/mediatek/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0
> +obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
> diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c
> b/drivers/firmware/mediatek/mtk-adsp-ipc.c
> new file mode 100644
> index 000000000000..87cee61dbf32
> --- /dev/null
> +++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c
> @@ -0,0 +1,161 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
> + * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> + */
> +
> +#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
> +#include <linux/kernel.h>
> +#include <linux/mailbox_client.h>
> +#include <linux/module.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +
> +/*
> + * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
> + *
> + * @ipc: ADSP IPC handle
> + * @idx: index of the mailbox channel
> + * @msg: IPC cmd (reply or request)
> + *
> + * Returns zero for success from mbox_send_message
> + * negative value for error
> + */
> +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx,
> uint32_t msg)
> +{
> + struct mtk_adsp_chan *adsp_chan;
> + int ret;
> +
> + if (idx >= MTK_ADSP_MBOX_NUM)
> + return -EINVAL;
> +
> + adsp_chan = &ipc->chans[idx];
> + ret = mbox_send_message(adsp_chan->ch, &msg);
> + if (ret < 0)
> + return ret;
> +
> + /*
> + * mbox_send_message returns non-negative value on success,
> + * return zero for success
> + */
> + return 0;
> +}
> +EXPORT_SYMBOL(mtk_adsp_ipc_send);
> +
> +/*
> + * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
> + *
> + * @c: mbox client
> + * @msg: message received
> + *
> + * Users of ADSP IPC will need to privde handle_reply and
> handle_request
> + * callbacks.
> + */
> +static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
> +{
> + struct mtk_adsp_chan *chan = container_of(c, struct
> mtk_adsp_chan, cl);
> + struct device *dev = c->dev;
> +
> + switch (chan->idx) {
> + case MTK_ADSP_MBOX_REPLY:
> + chan->ipc->ops->handle_reply(chan->ipc);
> + break;
> + case MTK_ADSP_MBOX_REQUEST:
> + chan->ipc->ops->handle_request(chan->ipc);
> + break;
> + default:
> + dev_err(dev, "wrong mbox chan %d\n", chan->idx);
> + break;
> + }
> +}
> +
> +static int mtk_adsp_ipc_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct mtk_adsp_ipc *adsp_ipc;
> + struct mtk_adsp_chan *adsp_chan;
> + struct mbox_client *cl;
> + char *chan_name;
> + int ret;
> + int i, j;
> +
> + device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
> +
> + adsp_ipc = devm_kzalloc(dev, sizeof(*adsp_ipc), GFP_KERNEL);
> + if (!adsp_ipc)
> + return -ENOMEM;
> +
> + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> + chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
> + if (!chan_name) {
> + ret = -ENOMEM;
> + goto out;
> + }
> +
> + adsp_chan = &adsp_ipc->chans[i];
> + cl = &adsp_chan->cl;
> + cl->dev = dev->parent;
> + cl->tx_block = false;
> + cl->knows_txdone = false;
> + cl->tx_prepare = NULL;
> + cl->rx_callback = mtk_adsp_ipc_recv;
> +
> + adsp_chan->ipc = adsp_ipc;
> + adsp_chan->idx = i;
> + adsp_chan->ch = mbox_request_channel_byname(cl,
> chan_name);
> + if (IS_ERR(adsp_chan->ch)) {
> + ret = PTR_ERR(adsp_chan->ch);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "Failed to request mbox
> chan %d ret %d\n",
> + i, ret);
> + goto out_free;
> + }
> +
> + dev_dbg(dev, "request mbox chan %s\n", chan_name);
> + kfree(chan_name);
> + }
> +
> + adsp_ipc->dev = dev;
> + dev_set_drvdata(dev, adsp_ipc);
> + dev_dbg(dev, "MTK ADSP IPC initialized\n");
> +
> + return 0;
> +
> +out_free:
> + kfree(chan_name);
> +out:
> + for (j = 0; j < i; j++) {
> + adsp_chan = &adsp_ipc->chans[j];
> + mbox_free_channel(adsp_chan->ch);
> + }
> +
> + return ret;
> +}
> +
> +static int mtk_adsp_ipc_remove(struct platform_device *pdev)
> +{
> + struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);
> + struct mtk_adsp_chan *adsp_chan;
> + int i;
> +
> + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> + adsp_chan = &adsp_ipc->chans[i];
> + mbox_free_channel(adsp_chan->ch);
> + }
> +
> + return 0;
> +}
> +
> +static struct platform_driver mtk_adsp_ipc_driver = {
> + .driver = {
> + .name = "mtk-adsp-ipc",
> + },
> + .probe = mtk_adsp_ipc_probe,
> + .remove = mtk_adsp_ipc_remove,
> +};
> +builtin_platform_driver(mtk_adsp_ipc_driver);
> +
> +MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng@mediatek.com>");
> +MODULE_DESCRIPTION("MTK ADSP IPC Driver");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> new file mode 100644
> index 000000000000..28fd313340b8
> --- /dev/null
> +++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> @@ -0,0 +1,65 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2022 MediaTek Inc.
> + */
> +
> +#ifndef MTK_ADSP_IPC_H
> +#define MTK_ADSP_IPC_H
> +
> +#include <linux/device.h>
> +#include <linux/types.h>
> +#include <linux/mailbox_controller.h>
> +#include <linux/mailbox_client.h>
> +
> +#define MTK_ADSP_IPC_REQ 0
> +#define MTK_ADSP_IPC_RSP 1
> +#define MTK_ADSP_IPC_OP_REQ 0x1
> +#define MTK_ADSP_IPC_OP_RSP 0x2
> +
> +enum {
> + MTK_ADSP_MBOX_REPLY,
> + MTK_ADSP_MBOX_REQUEST,
> + MTK_ADSP_MBOX_NUM,
> +};
> +
> +struct mtk_adsp_ipc;
> +
> +struct mtk_adsp_ipc_ops {
> + void (*handle_reply)(struct mtk_adsp_ipc *ipc);
> + void (*handle_request)(struct mtk_adsp_ipc *ipc);
> +};
> +
> +struct mtk_adsp_chan {
> + struct mtk_adsp_ipc *ipc;
> + struct mbox_client cl;
> + struct mbox_chan *ch;
> + char *name;
> + int idx;
> +};
> +
> +struct mtk_adsp_ipc {
> + struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
> + struct device *dev;
> + struct mtk_adsp_ipc_ops *ops;
> + void *private_data;
> +};
> +
> +static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc,
> void *data)
> +{
> + if (!ipc)
> + return;
> +
> + ipc->private_data = data;
> +}
> +
> +static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
> +{
> + if (!ipc)
> + return NULL;
> +
> + return ipc->private_data;
> +}
> +
> +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx,
> uint32_t op);
> +
> +#endif /* MTK_ADSP_IPC_H */
_______________________________________________
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linux-arm-kernel@lists.infradead.org
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^ permalink raw reply [flat|nested] 26+ messages in thread* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-04-27 7:04 ` allen-kh.cheng
0 siblings, 0 replies; 26+ messages in thread
From: allen-kh.cheng @ 2022-04-27 7:04 UTC (permalink / raw)
To: Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Hi Matthias,
Would you please take a look at it?
Thanks a lot,
Allen
On Thu, 2022-04-07 at 21:03 +0800, Allen-KH Cheng wrote:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <
> pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161
> ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
> index e5cfb01353d8..605ae3f47adc 100644
> --- a/drivers/firmware/Kconfig
> +++ b/drivers/firmware/Kconfig
> @@ -300,6 +300,7 @@ source "drivers/firmware/cirrus/Kconfig"
> source "drivers/firmware/google/Kconfig"
> source "drivers/firmware/efi/Kconfig"
> source "drivers/firmware/imx/Kconfig"
> +source "drivers/firmware/mediatek/Kconfig"
> source "drivers/firmware/meson/Kconfig"
> source "drivers/firmware/psci/Kconfig"
> source "drivers/firmware/smccc/Kconfig"
> diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
> index 4e58cb474a68..88fbdc110100 100644
> --- a/drivers/firmware/Makefile
> +++ b/drivers/firmware/Makefile
> @@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
> obj-$(CONFIG_EFI) += efi/
> obj-$(CONFIG_UEFI_CPER) += efi/
> obj-y += imx/
> +obj-y += mediatek/
> obj-y += psci/
> obj-y += smccc/
> obj-y += tegra/
> diff --git a/drivers/firmware/mediatek/Kconfig
> b/drivers/firmware/mediatek/Kconfig
> new file mode 100644
> index 000000000000..6d1e580b967b
> --- /dev/null
> +++ b/drivers/firmware/mediatek/Kconfig
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config MTK_ADSP_IPC
> + tristate "MTK ADSP IPC Protocol driver"
> + depends on MTK_ADSP_MBOX
> + help
> + Say yes here to add support for the MediaTek ADSP IPC
> + between host AP (Linux) and the firmware running on ADSP.
> + ADSP exists on some mtk processors.
> + Client might use shared memory to exchange information with
> ADSP side.
> diff --git a/drivers/firmware/mediatek/Makefile
> b/drivers/firmware/mediatek/Makefile
> new file mode 100644
> index 000000000000..4e840b65650d
> --- /dev/null
> +++ b/drivers/firmware/mediatek/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0
> +obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
> diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c
> b/drivers/firmware/mediatek/mtk-adsp-ipc.c
> new file mode 100644
> index 000000000000..87cee61dbf32
> --- /dev/null
> +++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c
> @@ -0,0 +1,161 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2022 MediaTek Corporation. All rights reserved.
> + * Author: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> + */
> +
> +#include <linux/firmware/mediatek/mtk-adsp-ipc.h>
> +#include <linux/kernel.h>
> +#include <linux/mailbox_client.h>
> +#include <linux/module.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +
> +/*
> + * mtk_adsp_ipc_send - send ipc cmd to MTK ADSP
> + *
> + * @ipc: ADSP IPC handle
> + * @idx: index of the mailbox channel
> + * @msg: IPC cmd (reply or request)
> + *
> + * Returns zero for success from mbox_send_message
> + * negative value for error
> + */
> +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx,
> uint32_t msg)
> +{
> + struct mtk_adsp_chan *adsp_chan;
> + int ret;
> +
> + if (idx >= MTK_ADSP_MBOX_NUM)
> + return -EINVAL;
> +
> + adsp_chan = &ipc->chans[idx];
> + ret = mbox_send_message(adsp_chan->ch, &msg);
> + if (ret < 0)
> + return ret;
> +
> + /*
> + * mbox_send_message returns non-negative value on success,
> + * return zero for success
> + */
> + return 0;
> +}
> +EXPORT_SYMBOL(mtk_adsp_ipc_send);
> +
> +/*
> + * mtk_adsp_ipc_recv - recv callback used by MTK ADSP mailbox
> + *
> + * @c: mbox client
> + * @msg: message received
> + *
> + * Users of ADSP IPC will need to privde handle_reply and
> handle_request
> + * callbacks.
> + */
> +static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg)
> +{
> + struct mtk_adsp_chan *chan = container_of(c, struct
> mtk_adsp_chan, cl);
> + struct device *dev = c->dev;
> +
> + switch (chan->idx) {
> + case MTK_ADSP_MBOX_REPLY:
> + chan->ipc->ops->handle_reply(chan->ipc);
> + break;
> + case MTK_ADSP_MBOX_REQUEST:
> + chan->ipc->ops->handle_request(chan->ipc);
> + break;
> + default:
> + dev_err(dev, "wrong mbox chan %d\n", chan->idx);
> + break;
> + }
> +}
> +
> +static int mtk_adsp_ipc_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct mtk_adsp_ipc *adsp_ipc;
> + struct mtk_adsp_chan *adsp_chan;
> + struct mbox_client *cl;
> + char *chan_name;
> + int ret;
> + int i, j;
> +
> + device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
> +
> + adsp_ipc = devm_kzalloc(dev, sizeof(*adsp_ipc), GFP_KERNEL);
> + if (!adsp_ipc)
> + return -ENOMEM;
> +
> + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> + chan_name = kasprintf(GFP_KERNEL, "mbox%d", i);
> + if (!chan_name) {
> + ret = -ENOMEM;
> + goto out;
> + }
> +
> + adsp_chan = &adsp_ipc->chans[i];
> + cl = &adsp_chan->cl;
> + cl->dev = dev->parent;
> + cl->tx_block = false;
> + cl->knows_txdone = false;
> + cl->tx_prepare = NULL;
> + cl->rx_callback = mtk_adsp_ipc_recv;
> +
> + adsp_chan->ipc = adsp_ipc;
> + adsp_chan->idx = i;
> + adsp_chan->ch = mbox_request_channel_byname(cl,
> chan_name);
> + if (IS_ERR(adsp_chan->ch)) {
> + ret = PTR_ERR(adsp_chan->ch);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "Failed to request mbox
> chan %d ret %d\n",
> + i, ret);
> + goto out_free;
> + }
> +
> + dev_dbg(dev, "request mbox chan %s\n", chan_name);
> + kfree(chan_name);
> + }
> +
> + adsp_ipc->dev = dev;
> + dev_set_drvdata(dev, adsp_ipc);
> + dev_dbg(dev, "MTK ADSP IPC initialized\n");
> +
> + return 0;
> +
> +out_free:
> + kfree(chan_name);
> +out:
> + for (j = 0; j < i; j++) {
> + adsp_chan = &adsp_ipc->chans[j];
> + mbox_free_channel(adsp_chan->ch);
> + }
> +
> + return ret;
> +}
> +
> +static int mtk_adsp_ipc_remove(struct platform_device *pdev)
> +{
> + struct mtk_adsp_ipc *adsp_ipc = dev_get_drvdata(&pdev->dev);
> + struct mtk_adsp_chan *adsp_chan;
> + int i;
> +
> + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) {
> + adsp_chan = &adsp_ipc->chans[i];
> + mbox_free_channel(adsp_chan->ch);
> + }
> +
> + return 0;
> +}
> +
> +static struct platform_driver mtk_adsp_ipc_driver = {
> + .driver = {
> + .name = "mtk-adsp-ipc",
> + },
> + .probe = mtk_adsp_ipc_probe,
> + .remove = mtk_adsp_ipc_remove,
> +};
> +builtin_platform_driver(mtk_adsp_ipc_driver);
> +
> +MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng@mediatek.com>");
> +MODULE_DESCRIPTION("MTK ADSP IPC Driver");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> new file mode 100644
> index 000000000000..28fd313340b8
> --- /dev/null
> +++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h
> @@ -0,0 +1,65 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2022 MediaTek Inc.
> + */
> +
> +#ifndef MTK_ADSP_IPC_H
> +#define MTK_ADSP_IPC_H
> +
> +#include <linux/device.h>
> +#include <linux/types.h>
> +#include <linux/mailbox_controller.h>
> +#include <linux/mailbox_client.h>
> +
> +#define MTK_ADSP_IPC_REQ 0
> +#define MTK_ADSP_IPC_RSP 1
> +#define MTK_ADSP_IPC_OP_REQ 0x1
> +#define MTK_ADSP_IPC_OP_RSP 0x2
> +
> +enum {
> + MTK_ADSP_MBOX_REPLY,
> + MTK_ADSP_MBOX_REQUEST,
> + MTK_ADSP_MBOX_NUM,
> +};
> +
> +struct mtk_adsp_ipc;
> +
> +struct mtk_adsp_ipc_ops {
> + void (*handle_reply)(struct mtk_adsp_ipc *ipc);
> + void (*handle_request)(struct mtk_adsp_ipc *ipc);
> +};
> +
> +struct mtk_adsp_chan {
> + struct mtk_adsp_ipc *ipc;
> + struct mbox_client cl;
> + struct mbox_chan *ch;
> + char *name;
> + int idx;
> +};
> +
> +struct mtk_adsp_ipc {
> + struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
> + struct device *dev;
> + struct mtk_adsp_ipc_ops *ops;
> + void *private_data;
> +};
> +
> +static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc,
> void *data)
> +{
> + if (!ipc)
> + return;
> +
> + ipc->private_data = data;
> +}
> +
> +static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc)
> +{
> + if (!ipc)
> + return NULL;
> +
> + return ipc->private_data;
> +}
> +
> +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx,
> uint32_t op);
> +
> +#endif /* MTK_ADSP_IPC_H */
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
2022-04-07 13:03 ` Allen-KH Cheng
(?)
(?)
@ 2022-05-25 10:39 ` AngeloGioacchino Del Regno
-1 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:39 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
Gentle ping for this one, as it's getting stale... and it's ready.
To add context, this driver is *really* necessary, as support for it
is added in the MT8195 ASoC SOF driver as a platform device [1], and the
necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
Cheers,
Angelo
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-05-25 10:39 ` AngeloGioacchino Del Regno
0 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:39 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
Gentle ping for this one, as it's getting stale... and it's ready.
To add context, this driver is *really* necessary, as support for it
is added in the MT8195 ASoC SOF driver as a platform device [1], and the
necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
Cheers,
Angelo
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-05-25 10:39 ` AngeloGioacchino Del Regno
0 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:39 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: linux-arm-kernel, devicetree, Linux-ALSA, Kai Vehmanen,
cujomalainey, Kevin Hilman, Takashi Iwai, Pierre-Louis Bossart,
Liam Girdwood, Project_Global_Chrome_Upstream_Group, tzungbi,
linux-mediatek, Ranjani Sridharan, Chen-Yu Tsai, Daniel Baluta,
linux-kernel, sound-open-firmware
Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
Gentle ping for this one, as it's getting stale... and it's ready.
To add context, this driver is *really* necessary, as support for it
is added in the MT8195 ASoC SOF driver as a platform device [1], and the
necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
Cheers,
Angelo
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-05-25 10:39 ` AngeloGioacchino Del Regno
0 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:39 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>
> Some of mediatek processors contain
> the Tensilica HiFix DSP for audio processing.
>
> The communication between Host CPU and DSP firmware is
> taking place using a shared memory area for message passing.
>
> ADSP IPC protocol offers (send/recv) interfaces using
> mediatek-mailbox APIs.
>
> We use two mbox channels to implement a request-reply protocol.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
> Reviewed-by: YC Hung <yc.hung@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
> drivers/firmware/Kconfig | 1 +
> drivers/firmware/Makefile | 1 +
> drivers/firmware/mediatek/Kconfig | 9 +
> drivers/firmware/mediatek/Makefile | 2 +
> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
> 6 files changed, 239 insertions(+)
> create mode 100644 drivers/firmware/mediatek/Kconfig
> create mode 100644 drivers/firmware/mediatek/Makefile
> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>
Gentle ping for this one, as it's getting stale... and it's ready.
To add context, this driver is *really* necessary, as support for it
is added in the MT8195 ASoC SOF driver as a platform device [1], and the
necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
Cheers,
Angelo
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
2022-05-25 10:39 ` AngeloGioacchino Del Regno
(?)
(?)
@ 2022-05-25 10:41 ` AngeloGioacchino Del Regno
-1 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:41 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Il 25/05/22 12:39, AngeloGioacchino Del Regno ha scritto:
> Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
>> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>>
>> Some of mediatek processors contain
>> the Tensilica HiFix DSP for audio processing.
>>
>> The communication between Host CPU and DSP firmware is
>> taking place using a shared memory area for message passing.
>>
>> ADSP IPC protocol offers (send/recv) interfaces using
>> mediatek-mailbox APIs.
>>
>> We use two mbox channels to implement a request-reply protocol.
>>
>> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
>> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
>> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
>> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
>> Reviewed-by: YC Hung <yc.hung@mediatek.com>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>> drivers/firmware/Kconfig | 1 +
>> drivers/firmware/Makefile | 1 +
>> drivers/firmware/mediatek/Kconfig | 9 +
>> drivers/firmware/mediatek/Makefile | 2 +
>> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
>> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
>> 6 files changed, 239 insertions(+)
>> create mode 100644 drivers/firmware/mediatek/Kconfig
>> create mode 100644 drivers/firmware/mediatek/Makefile
>> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
>> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>>
>
> Gentle ping for this one, as it's getting stale... and it's ready.
>
> To add context, this driver is *really* necessary, as support for it
> is added in the MT8195 ASoC SOF driver as a platform device [1], and the
> necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
>
> [1]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
>
>
> [2]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
>
>
> Cheers,
> Angelo
I'm sorry, ignore me, another version of this one was already merged.
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-05-25 10:41 ` AngeloGioacchino Del Regno
0 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:41 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Il 25/05/22 12:39, AngeloGioacchino Del Regno ha scritto:
> Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
>> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>>
>> Some of mediatek processors contain
>> the Tensilica HiFix DSP for audio processing.
>>
>> The communication between Host CPU and DSP firmware is
>> taking place using a shared memory area for message passing.
>>
>> ADSP IPC protocol offers (send/recv) interfaces using
>> mediatek-mailbox APIs.
>>
>> We use two mbox channels to implement a request-reply protocol.
>>
>> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
>> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
>> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
>> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
>> Reviewed-by: YC Hung <yc.hung@mediatek.com>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>> drivers/firmware/Kconfig | 1 +
>> drivers/firmware/Makefile | 1 +
>> drivers/firmware/mediatek/Kconfig | 9 +
>> drivers/firmware/mediatek/Makefile | 2 +
>> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
>> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
>> 6 files changed, 239 insertions(+)
>> create mode 100644 drivers/firmware/mediatek/Kconfig
>> create mode 100644 drivers/firmware/mediatek/Makefile
>> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
>> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>>
>
> Gentle ping for this one, as it's getting stale... and it's ready.
>
> To add context, this driver is *really* necessary, as support for it
> is added in the MT8195 ASoC SOF driver as a platform device [1], and the
> necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
>
> [1]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
>
>
> [2]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
>
>
> Cheers,
> Angelo
I'm sorry, ignore me, another version of this one was already merged.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-05-25 10:41 ` AngeloGioacchino Del Regno
0 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:41 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: linux-arm-kernel, devicetree, Linux-ALSA, Kai Vehmanen,
cujomalainey, Kevin Hilman, Takashi Iwai, Pierre-Louis Bossart,
Liam Girdwood, Project_Global_Chrome_Upstream_Group, tzungbi,
linux-mediatek, Ranjani Sridharan, Chen-Yu Tsai, Daniel Baluta,
linux-kernel, sound-open-firmware
Il 25/05/22 12:39, AngeloGioacchino Del Regno ha scritto:
> Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
>> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>>
>> Some of mediatek processors contain
>> the Tensilica HiFix DSP for audio processing.
>>
>> The communication between Host CPU and DSP firmware is
>> taking place using a shared memory area for message passing.
>>
>> ADSP IPC protocol offers (send/recv) interfaces using
>> mediatek-mailbox APIs.
>>
>> We use two mbox channels to implement a request-reply protocol.
>>
>> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
>> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
>> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
>> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
>> Reviewed-by: YC Hung <yc.hung@mediatek.com>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>> drivers/firmware/Kconfig | 1 +
>> drivers/firmware/Makefile | 1 +
>> drivers/firmware/mediatek/Kconfig | 9 +
>> drivers/firmware/mediatek/Makefile | 2 +
>> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
>> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
>> 6 files changed, 239 insertions(+)
>> create mode 100644 drivers/firmware/mediatek/Kconfig
>> create mode 100644 drivers/firmware/mediatek/Makefile
>> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
>> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>>
>
> Gentle ping for this one, as it's getting stale... and it's ready.
>
> To add context, this driver is *really* necessary, as support for it
> is added in the MT8195 ASoC SOF driver as a platform device [1], and the
> necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
>
> [1]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
>
>
> [2]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
>
>
> Cheers,
> Angelo
I'm sorry, ignore me, another version of this one was already merged.
^ permalink raw reply [flat|nested] 26+ messages in thread
* Re: [PATCH v7 1/1] firmware: mediatek: add adsp ipc protocol interface
@ 2022-05-25 10:41 ` AngeloGioacchino Del Regno
0 siblings, 0 replies; 26+ messages in thread
From: AngeloGioacchino Del Regno @ 2022-05-25 10:41 UTC (permalink / raw)
To: Allen-KH Cheng, Matthias Brugger, Mark Brown
Cc: Kevin Hilman, Linux-ALSA, tzungbi, Chen-Yu Tsai, cujomalainey,
Pierre-Louis Bossart, Liam Girdwood, Ranjani Sridharan,
Kai Vehmanen, Daniel Baluta, Jaroslav Kysela, Takashi Iwai,
Project_Global_Chrome_Upstream_Group, linux-kernel, devicetree,
linux-arm-kernel, linux-mediatek, sound-open-firmware
Il 25/05/22 12:39, AngeloGioacchino Del Regno ha scritto:
> Il 07/04/22 15:03, Allen-KH Cheng ha scritto:
>> From: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
>>
>> Some of mediatek processors contain
>> the Tensilica HiFix DSP for audio processing.
>>
>> The communication between Host CPU and DSP firmware is
>> taking place using a shared memory area for message passing.
>>
>> ADSP IPC protocol offers (send/recv) interfaces using
>> mediatek-mailbox APIs.
>>
>> We use two mbox channels to implement a request-reply protocol.
>>
>> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
>> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
>> Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>
>> Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
>> Reviewed-by: YC Hung <yc.hung@mediatek.com>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>> drivers/firmware/Kconfig | 1 +
>> drivers/firmware/Makefile | 1 +
>> drivers/firmware/mediatek/Kconfig | 9 +
>> drivers/firmware/mediatek/Makefile | 2 +
>> drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++
>> .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++
>> 6 files changed, 239 insertions(+)
>> create mode 100644 drivers/firmware/mediatek/Kconfig
>> create mode 100644 drivers/firmware/mediatek/Makefile
>> create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c
>> create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h
>>
>
> Gentle ping for this one, as it's getting stale... and it's ready.
>
> To add context, this driver is *really* necessary, as support for it
> is added in the MT8195 ASoC SOF driver as a platform device [1], and the
> necessary memory regions are coming from the mediatek,mt8195-dsp [2] driver.
>
> [1]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/sound/soc/sof/mediatek/mt8195/mt8195.c?h=next-20220525#n389
>
>
> [2]:
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml?h=next-20220525#n61
>
>
> Cheers,
> Angelo
I'm sorry, ignore me, another version of this one was already merged.
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 26+ messages in thread