dm: fpga: Introduce new uclass
For future DM based FPGA drivers and for now to have a meaningful
logging class for old FPGA drivers.
Suggested-by: Michal Simek <michal.simek@amd.com>
Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Dahl <post@lespocky.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20220930120430.42307-2-post@lespocky.de
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index b4b185a..c4ed454 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -945,6 +945,7 @@
F: drivers/fpga/
F: cmd/fpga.c
F: include/fpga.h
+F: test/dm/fpga.c
FLATTENED DEVICE TREE
M: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 4ee4712..a7b49f3 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -652,6 +652,10 @@
};
};
+ fpga {
+ compatible = "sandbox,fpga";
+ };
+
pinctrl-gpio {
compatible = "sandbox,pinctrl-gpio";
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index e07a9cf..e2fd16e 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -118,4 +118,23 @@
Enables the fpga loads() functions that are used to load secure
(authenticated or encrypted or both) bitstreams on to FPGA.
+config DM_FPGA
+ bool "Enable Driver Model for FPGA drivers"
+ depends on DM
+ select FPGA
+ help
+ Enable driver model for Field-Programmable Gate Array (FPGA) devices.
+ The devices cover a wide range of applications and are configured at
+ runtime by loading a bitstream into the FPGA device.
+ Loading a bitstream from any kind of storage is the main task of the
+ FPGA drivers.
+ For now this uclass has no methods yet.
+
+config SANDBOX_FPGA
+ bool "Enable sandbox FPGA driver"
+ depends on SANDBOX && DM_FPGA
+ help
+ This is a driver model based FPGA driver for sandbox.
+ Currently it is a stub only, as there are no usable uclass methods yet.
+
endmenu
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index 83243fb..610c168 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -4,6 +4,9 @@
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
obj-y += fpga.o
+obj-$(CONFIG_DM_FPGA) += fpga-uclass.o
+obj-$(CONFIG_SANDBOX_FPGA) += sandbox.o
+
obj-$(CONFIG_FPGA_SPARTAN2) += spartan2.o
obj-$(CONFIG_FPGA_SPARTAN3) += spartan3.o
obj-$(CONFIG_FPGA_VERSALPL) += versalpl.o
diff --git a/drivers/fpga/fpga-uclass.c b/drivers/fpga/fpga-uclass.c
new file mode 100644
index 0000000..4278ec2
--- /dev/null
+++ b/drivers/fpga/fpga-uclass.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2022 Alexander Dahl <post@lespocky.de>
+ */
+
+#include <dm.h>
+
+UCLASS_DRIVER(fpga) = {
+ .name = "fpga",
+ .id = UCLASS_FPGA,
+};
diff --git a/drivers/fpga/sandbox.c b/drivers/fpga/sandbox.c
new file mode 100644
index 0000000..f17a822
--- /dev/null
+++ b/drivers/fpga/sandbox.c
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2022 Alexander Dahl <post@lespocky.de>
+ */
+
+#include <dm.h>
+
+static const struct udevice_id sandbox_fpga_match[] = {
+ { .compatible = "sandbox,fpga" },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(sandbox_fpga) = {
+ .name = "sandbox_fpga",
+ .id = UCLASS_FPGA,
+ .of_match = sandbox_fpga_match,
+};
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index a432e43..c2b1588 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -56,6 +56,7 @@
UCLASS_ETH, /* Ethernet device */
UCLASS_ETH_PHY, /* Ethernet PHY device */
UCLASS_FIRMWARE, /* Firmware */
+ UCLASS_FPGA, /* FPGA device */
UCLASS_FUZZING_ENGINE, /* Fuzzing engine */
UCLASS_FS_FIRMWARE_LOADER, /* Generic loader */
UCLASS_GPIO, /* Bank of general-purpose I/O pins */
diff --git a/test/dm/Makefile b/test/dm/Makefile
index 5178daa..499e769 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -47,6 +47,7 @@
obj-$(CONFIG_FASTBOOT_FLASH_MMC) += fastboot.o
endif
obj-$(CONFIG_FIRMWARE) += firmware.o
+obj-$(CONFIG_DM_FPGA) += fpga.o
obj-$(CONFIG_DM_HWSPINLOCK) += hwspinlock.o
obj-$(CONFIG_DM_I2C) += i2c.o
obj-$(CONFIG_SOUND) += i2s.o
diff --git a/test/dm/fpga.c b/test/dm/fpga.c
new file mode 100644
index 0000000..8bb3535
--- /dev/null
+++ b/test/dm/fpga.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2022 Alexander Dahl <post@lespocky.de>
+ */
+
+#include <dm.h>
+#include <dm/test.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+static int dm_test_fpga(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+
+ ut_assertok(uclass_first_device_err(UCLASS_FPGA, &dev));
+
+ return 0;
+}
+
+DM_TEST(dm_test_fpga, UT_TESTF_SCAN_FDT);