On 1/14/26 12:46 AM, Tomeu Vizoso wrote:

Some SoCs from Texas Instruments contain DSPs that can be used for general compute tasks.

This driver provides a drm/accel UABI to userspace for submitting jobs to the DSP cores and managing the input, output and intermediate memory.

Signed-off-by: Tomeu Vizoso tomeu@tomeuvizoso.net

Documentation/accel/thames/index.rst | 28 +++++ MAINTAINERS | 9 ++ drivers/accel/Kconfig | 1 + drivers/accel/Makefile | 3 +- drivers/accel/thames/Kconfig | 26 +++++ drivers/accel/thames/Makefile | 9 ++ drivers/accel/thames/thames_core.c | 155 ++++++++++++++++++++++++++ drivers/accel/thames/thames_core.h | 53 +++++++++ drivers/accel/thames/thames_device.c | 93 ++++++++++++++++ drivers/accel/thames/thames_device.h | 46 ++++++++ drivers/accel/thames/thames_drv.c | 155 ++++++++++++++++++++++++++ drivers/accel/thames/thames_drv.h | 21 ++++ drivers/accel/thames/thames_ipc.h | 204 +++++++++++++++++++++++++++++++++++ drivers/accel/thames/thames_rpmsg.c | 155 ++++++++++++++++++++++++++ drivers/accel/thames/thames_rpmsg.h | 27 +++++ 15 files changed, 984 insertions(+), 1 deletion(-)

diff --git a/drivers/accel/Makefile b/drivers/accel/Makefile index 1d3a7251b950f39e2ae600a2fc07a3ef7e41831e..8472989cbe22746f1e7292d2401fa0f7424a6c15 100644 --- a/drivers/accel/Makefile +++ b/drivers/accel/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_DRM_ACCEL_ARM_ETHOSU) += ethosu/ obj-$(CONFIG_DRM_ACCEL_HABANALABS) += habanalabs/ obj-$(CONFIG_DRM_ACCEL_IVPU) += ivpu/ obj-$(CONFIG_DRM_ACCEL_QAIC) += qaic/ -obj-$(CONFIG_DRM_ACCEL_ROCKET) += rocket/ \ No newline at end of file +obj-$(CONFIG_DRM_ACCEL_ROCKET) += rocket/ +obj-$(CONFIG_DRM_ACCEL_THAMES) += thames/ \ No newline at end of file

Please eliminate these warnings.

diff --git a/drivers/accel/thames/thames_ipc.h b/drivers/accel/thames/thames_ipc.h> new file mode 100644 index 0000000000000000000000000000000000000000..60297b4bc2ffd990315cb735a96a23429d390f43 --- /dev/null +++ b/drivers/accel/thames/thames_ipc.h @@ -0,0 +1,204 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/*

• • Copyright 2026 Texas Instruments Incorporated - https://www.ti.com/
• • This header defines the RPMSG message structures exchanged between
• • the Linux kernel (host) and the C7x DSP (remote) firmware for the
• • Thames DRM/accel driver.
• */

+#ifndef _THAMES_IPC_H +#define _THAMES_IPC_H

+#ifdef __KERNEL__ +#include <linux/types.h> +#else +#include <stdint.h> +typedef uint8_t __u8; +typedef uint16_t __u16; +typedef uint32_t __u32; +typedef uint64_t __u64; +#endif

+#define THAMES_SERVICE_NAME "thames-service"

+/**

• • @THAMES_MSG_TYPE: Simplified message type enumeration
• */

"/**" means "this is kernel-doc format", which should look like:

/** * enum thames_msg_type - Simplified message type enumeration */

and then each enum value should be documented as well.

+enum thames_msg_type {

• /* --- Host (Kernel) -> Remote (DSP) --- */
• THAMES_MSG_PING = 0x100, /* Ping message to test communication */
• THAMES_MSG_CONTEXT_OP, /* Create/destroy context */
• THAMES_MSG_BO_OP, /* Map/unmap buffer objects */
• THAMES_MSG_SUBMIT_JOB, /* Submit job for execution */
• /* --- Remote (DSP) -> Host (Kernel) --- */
• THAMES_MSG_PING_RESPONSE = 0x200,
• THAMES_MSG_CONTEXT_OP_RESPONSE,
• THAMES_MSG_BO_OP_RESPONSE,
• THAMES_MSG_SUBMIT_JOB_RESPONSE,

+};

+/**

• • @THAMES_CONTEXT_OP: Context operation types

* enum thames_context_op - Context operations types

• */

+enum thames_context_op {

• THAMES_CONTEXT_CREATE = 0,
• THAMES_CONTEXT_DESTROY,

+};

+/**

• • @THAMES_BO_OP: Buffer Object operation types

* enum thames_bo_op - Buffer Object operation types

• */

+enum thames_bo_op {

• THAMES_BO_MAP = 0,
• THAMES_BO_UNMAP,

+};

+/**

• • @THAMES_RESP_STATUS: Response status codes

* enum thames_resp_status - Response status codes

• */

+enum thames_resp_status {

• THAMES_RESP_SUCCESS = 0,
• THAMES_RESP_ERR_GENERIC = 1,
• THAMES_RESP_ERR_NOMEM = 2,
• THAMES_RESP_ERR_INVAL = 3,
• THAMES_RESP_ERR_NO_CTX = 4,
• THAMES_RESP_ERR_MMU = 5,
• THAMES_RESP_ERR_JOB_TIMEOUT = 6,

+};

Or you could just use "/*" so that they aren't considered as kernel-doc.