Hi Tanmay,
On Tue, 25 Jul 2023 at 08:08, Tanmay Shah tanmay.shah@amd.com wrote:
Add driver to demonstrate use of rpmsg framework.
Signed-off-by: Tanmay Shah tanmay.shah@amd.com
drivers/rpmsg/Kconfig | 8 ++++ drivers/rpmsg/Makefile | 3 ++ drivers/rpmsg/rpmsg_sample_client.c | 63 +++++++++++++++++++++++++++++ 3 files changed, 74 insertions(+) create mode 100644 drivers/rpmsg/rpmsg_sample_client.c
Reviewed-by: Simon Glass sjg@chromium.org
diff --git a/drivers/rpmsg/Kconfig b/drivers/rpmsg/Kconfig index 4efb8dfcd7..808cd16275 100644 --- a/drivers/rpmsg/Kconfig +++ b/drivers/rpmsg/Kconfig @@ -28,4 +28,12 @@ config RPMSG_SANDBOX Say 'y' here to add sandbox driver for RPMsg framework used for dummy communication with remote processor on sandbox platform
+config RPMSG_SAMPLE_CLIENT
bool "Sample RPMsg client driver"depends on DMselect RPMSGhelpSay 'y' here to enable driver that demonstrate use of RPMsg framework.
enable a driver
demonstrates
This driver uses RPMsg APIs to communicate with remote processor.endmenu diff --git a/drivers/rpmsg/Makefile b/drivers/rpmsg/Makefile index 21611725ea..53af0f7ea6 100644 --- a/drivers/rpmsg/Makefile +++ b/drivers/rpmsg/Makefile @@ -6,5 +6,8 @@ obj-$(CONFIG_RPMSG) += rpmsg-uclass.o
obj-$(CONFIG_RPMSG_SANDBOX) += sandbox_test_rpmsg.o
+# Sample driver demonstrate how to use rpmsg framework +obj-$(CONFIG_RPMSG_SAMPLE_CLIENT) += rpmsg_sample_client.o
# virtio driver for rpmsg obj-$(CONFIG_VIRTIO_RPMSG_BUS) += virtio_rpmsg_bus.o diff --git a/drivers/rpmsg/rpmsg_sample_client.c b/drivers/rpmsg/rpmsg_sample_client.c new file mode 100644 index 0000000000..ae591dbdde --- /dev/null +++ b/drivers/rpmsg/rpmsg_sample_client.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +/*
- Copyright (C) 2011 Texas Instruments, Inc.
- Copyright (C) 2011 Google, Inc.
- Copyright (C) 2023, Advanced Micro Devices, Inc.
- Sample client that shows use of rpmsg APIs
- */
+#include <common.h> +#include <dm.h> +#include <errno.h> +#include <log.h> +#include <malloc.h> +#include <rpmsg.h> +#include <dm/device-internal.h> +#include <dm/uclass.h> +#include <dm/uclass-internal.h>
Do you need those three?
+#include <linux/delay.h>
+static int rpmsg_rx_callback(void *buf, int msg_len, u32 msgs_received) +{
printf("APU: rx: %s\n", (char *)buf);return 0;+}
+static int rpmsg_sample_client_probe(struct udevice *udev) +{
char data[80] = {0};int i;/* Initialize rpmsg for core 0 */rpmsg_init(0);/* wait for RPU to initialize vdev */mdelay(20);/* assume rpmsg init is already done */for (i = 1; i < 5; i++) {sprintf(data, "rpmsg buf %d", i);printf("APU: tx: %s\n", data);rpmsg_send(0, data, strlen(data));/* 20ms delay before receiving the data */mdelay(20);rpmsg_recv(0, rpmsg_rx_callback);printf("\n");}return 0;+}
+U_BOOT_DRIVER(rpmsg_sample_client) = {
.name = "rpmsg-sample-client",.id = UCLASS_MISC,.probe = rpmsg_sample_client_probe,.flags = DM_FLAG_PRE_RELOC,+};
+U_BOOT_DRVINFO(rpmsg_sample_client) = {
.name = "rpmsg-sample-client",+};
2.25.1
REgards, SImon