Add board code library for all WolfVision boards.
Signed-off-by: Michael Riesch <michael.riesch@xxxxxxxxxxxxxx>
---
common/boards/Kconfig | 3 +
common/boards/Makefile | 1 +
common/boards/wolfvision/Makefile | 2 +
common/boards/wolfvision/common.c | 142 +++++++++++++++++++++++++++++++++++++
include/boards/wolfvision/common.h | 32 +++++++++
5 files changed, 180 insertions(+)
diff --git a/common/boards/Kconfig b/common/boards/Kconfig
index f6d4a56f88..a2a51155ea 100644
--- a/common/boards/Kconfig
+++ b/common/boards/Kconfig
@@ -14,3 +14,6 @@ config BOARD_PHYTEC_SOM_IMX8M_DETECTION
config BOARD_TQ
select CRC_ITU_T
bool
+
+config BOARD_WOLFVISION
+ bool
diff --git a/common/boards/Makefile b/common/boards/Makefile
index 147c36643d..3f8ac57b2f 100644
--- a/common/boards/Makefile
+++ b/common/boards/Makefile
@@ -3,3 +3,4 @@
obj-$(CONFIG_BOARD_QEMU_VIRT) += qemu-virt/
obj-$(CONFIG_BOARD_PHYTEC_SOM_DETECTION) += phytec/
obj-$(CONFIG_BOARD_TQ) += tq/
+obj-$(CONFIG_BOARD_WOLFVISION) += wolfvision/
diff --git a/common/boards/wolfvision/Makefile b/common/boards/wolfvision/Makefile
new file mode 100644
index 0000000000..b2be4b73f4
--- /dev/null
+++ b/common/boards/wolfvision/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-pbl-y += common.o
diff --git a/common/boards/wolfvision/common.c b/common/boards/wolfvision/common.c
new file mode 100644
index 0000000000..f483918cec
--- /dev/null
+++ b/common/boards/wolfvision/common.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Common board code functions WolfVision boards.
+ *
+ * Copyright (C) 2024 WolfVision GmbH.
+ */
+
+#define pr_fmt(fmt) "boards: wolfvision: " fmt
+
+#include <common.h>
+#include <aiodev.h>
+#include <net.h>
+#include <state.h>
+
+#include <boards/wolfvision/common.h>
+
+#define WV_RK3568_HWID_TOLERANCE 50
+
+int wolfvision_apply_overlay(const struct wv_overlay *overlay, char **files)
+{
+ int ret;
+
+ if (overlay->filename) {
+ if (*files) {
+ char *old = *files;
+ *files = basprintf("%s %s", old, overlay->filename);
+ free(old);
+ } else {
+ *files = basprintf("%s", overlay->filename);
+ }
+ }
+
+ if (overlay->data) {
+ struct device_node *node =
+ of_unflatten_dtb(overlay->data, INT_MAX);
+
+ if (IS_ERR(node)) {
+ pr_err("Cannot unflatten dtbo\n");
+ return PTR_ERR(node);
+ }
+
+ ret = of_overlay_apply_tree(of_get_root_node(), node);
+
+ of_delete_node(node);
+
+ if (ret) {
+ pr_err("Cannot apply overlay: %pe\n", ERR_PTR(ret));
+ return ret;
+ }
+
+ of_clk_init();
+ of_probe();
+ }
+
+ return 0;
+}
+
+int wolfvision_register_ethaddr(void)
+{
+ struct device_node *eth0;
+ struct state *state;
+ char mac[ETH_ALEN];
+ int ret;
+
+ ret = of_device_ensure_probed_by_alias("state");
+ if (ret)
+ return ret;
+
+ state = state_by_name("state");
+ if (!state)
+ return -ENOENT;
+
+ ret = state_read_mac(state, "mac-address", mac);
+ if (ret)
+ return ret;
+
+ if (!is_valid_ether_addr(mac))
+ return -EINVAL;
+
+ eth0 = of_find_node_by_alias(of_get_root_node(), "ethernet0");
+ if (eth0)
+ of_eth_register_ethaddr(eth0, mac);
+
+ return 0;
+}
+
+static int wolfvision_rk3568_get_hwid(int chan_idx)
+{
+ const int values[WV_RK3568_HWID_MAX] = {
+ 0, 112, 225, 337, 450, 562, 675, 787, 900,
+ 1012, 1125, 1237, 1350, 1462, 1575, 1687, 1800,
+ };
+ int ret, hwid, voltage;
+ char *chan_name;
+
+ chan_name = basprintf("saradc.in_value%d_mV", chan_idx);
+ ret = aiochannel_name_get_value(chan_name, &voltage);
+ free(chan_name);
+ if (ret)
+ return ret;
+
+ for (hwid = 0; hwid < ARRAY_SIZE(values); hwid++)
+ if (abs(voltage - values[hwid]) < WV_RK3568_HWID_TOLERANCE)
+ return hwid;
+
+ return -EINVAL;
+};
+
+int wolfvision_rk3568_detect_hw(const struct wv_rk3568_extension *extensions,
+ int num_extensions, char **overlays)
+{
+ int i, hwid, ret;
+
+ ret = of_device_ensure_probed_by_alias("saradc");
+ if (ret)
+ return ret;
+
+ for (i = 0; i < num_extensions; i++) {
+ const struct wv_rk3568_extension *extension = &extensions[i];
+ const struct wv_overlay *overlay;
+
+ ret = wolfvision_rk3568_get_hwid(extension->adc_chan);
+ if (ret < 0) {
+ pr_warning("Could not retrieve %s HWID (%d)\n",
+ extension->name, ret);
+ continue;
+ }
+
+ hwid = ret;
+ overlay = &extension->overlays[hwid];
+ if (overlay->name) {
+ pr_info("Detected %s %s\n", overlay->name,
+ extension->name);
+ wolfvision_apply_overlay(overlay, overlays);
+ } else {
+ pr_warning("Detected unknown %s HWID %d\n",
+ extension->name, hwid);
+ }
+ }
+
+ return 0;
+}
diff --git a/include/boards/wolfvision/common.h b/include/boards/wolfvision/common.h
new file mode 100644
index 0000000000..a9bf6acbbb
--- /dev/null
+++ b/include/boards/wolfvision/common.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Common board code functions WolfVision boards.
+ *
+ * Copyright (C) 2024 WolfVision GmbH.
+ */
+
+#ifndef _BOARDS_WOLFVISION_COMMON_H
+#define _BOARDS_WOLFVISION_COMMON_H
+
+#define WV_RK3568_HWID_MAX 17
+
+struct wv_overlay {
+ const char *name;
+ const char *filename;
+ const void *data;
+};
+
+struct wv_rk3568_extension {
+ int adc_chan;
+ const char *name;
+ const struct wv_overlay overlays[WV_RK3568_HWID_MAX];
+};
+
+int wolfvision_apply_overlay(const struct wv_overlay *overlay, char **files);
+
+int wolfvision_register_ethaddr(void);
+
+int wolfvision_rk3568_detect_hw(const struct wv_rk3568_extension *extensions,
+ int num_extensions, char **overlays);
+
+#endif /* _BOARDS_WOLFVISION_COMMON_H */
--
2.34.1
