Introduce UCLASS_MEMORY for future Memory Controller device drivers.
Signed-off-by: Roger Quadros rogerq@kernel.org Reviewed-by: Simon Glass sjg@chromium.org --- arch/sandbox/dts/test.dts | 4 ++++ drivers/memory/Kconfig | 17 +++++++++++++++++ drivers/memory/Makefile | 2 ++ drivers/memory/memory-sandbox.c | 18 ++++++++++++++++++ drivers/memory/memory-uclass.c | 13 +++++++++++++ include/dm/uclass-id.h | 1 + test/dm/Makefile | 1 + test/dm/memory.c | 21 +++++++++++++++++++++ 8 files changed, 77 insertions(+) create mode 100644 drivers/memory/memory-sandbox.c create mode 100644 drivers/memory/memory-uclass.c create mode 100644 test/dm/memory.c
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 2761588f0d..d65b2d2dcb 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -926,6 +926,10 @@ }; };
+ memory-controller { + compatible = "sandbox,memory"; + }; + misc-test { #address-cells = <1>; #size-cells = <1>; diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig index 7271892763..c621f5bba3 100644 --- a/drivers/memory/Kconfig +++ b/drivers/memory/Kconfig @@ -4,6 +4,23 @@
menu "Memory Controller drivers"
+config MEMORY + bool "Enable Driver Model for Memory Controller drivers" + depends on DM + help + Enable driver model for Memory Controller devices. + These devices provide Memory bus interface to various devices like + SRAM, Ethernet adapters, FPGAs, etc. + For now this uclass has no methods yet. + +config SANDBOX_MEMORY + bool "Enable Sandbox Memory Controller driver" + depends on SANDBOX && MEMORY + help + This is a driver model based Memory Controller driver for sandbox. + Currently it is a stub only, as there are no usable uclass methods + yet. + config STM32_FMC2_EBI bool "Support for FMC2 External Bus Interface on STM32MP SoCs" depends on ARCH_STM32MP diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile index fec52efb60..b27f701865 100644 --- a/drivers/memory/Makefile +++ b/drivers/memory/Makefile @@ -1,3 +1,5 @@
+obj-$(CONFIG_MEMORY) += memory-uclass.o +obj-$(CONFIG_SANDBOX_MEMORY) += memory-sandbox.o obj-$(CONFIG_STM32_FMC2_EBI) += stm32-fmc2-ebi.o obj-$(CONFIG_TI_AEMIF) += ti-aemif.o diff --git a/drivers/memory/memory-sandbox.c b/drivers/memory/memory-sandbox.c new file mode 100644 index 0000000000..f2ede50863 --- /dev/null +++ b/drivers/memory/memory-sandbox.c @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2022 + * Texas Instruments Incorporated, <www.ti.com> + */ + +#include <dm.h> + +static const struct udevice_id sandbox_memory_match[] = { + { .compatible = "sandbox,memory" }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(sandbox_memory) = { + .name = "sandbox_memory", + .id = UCLASS_MEMORY, + .of_match = sandbox_memory_match, +}; diff --git a/drivers/memory/memory-uclass.c b/drivers/memory/memory-uclass.c new file mode 100644 index 0000000000..d6d37fe777 --- /dev/null +++ b/drivers/memory/memory-uclass.c @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2022 + * Texas Instruments Incorporated, <www.ti.com> + */ + +#include <dm.h> + +UCLASS_DRIVER(memory) = { + .name = "memory", + .id = UCLASS_MEMORY, + .post_bind = dm_scan_fdt_dev, +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index a432e43871..936a16c5d9 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -76,6 +76,7 @@ enum uclass_id { UCLASS_MASS_STORAGE, /* Mass storage device */ UCLASS_MDIO, /* MDIO bus */ UCLASS_MDIO_MUX, /* MDIO MUX/switch */ + UCLASS_MEMORY, /* Memory Controller device */ UCLASS_MISC, /* Miscellaneous device */ UCLASS_MMC, /* SD / MMC card or chip */ UCLASS_MOD_EXP, /* RSA Mod Exp device */ diff --git a/test/dm/Makefile b/test/dm/Makefile index 7543df8823..1082e65c41 100644 --- a/test/dm/Makefile +++ b/test/dm/Makefile @@ -47,6 +47,7 @@ ifneq ($(CONFIG_EFI_PARTITION),) obj-$(CONFIG_FASTBOOT_FLASH_MMC) += fastboot.o endif obj-$(CONFIG_FIRMWARE) += firmware.o +obj-$(CONFIG_MEMORY) += memory.o obj-$(CONFIG_DM_HWSPINLOCK) += hwspinlock.o obj-$(CONFIG_DM_I2C) += i2c.o obj-$(CONFIG_SOUND) += i2s.o diff --git a/test/dm/memory.c b/test/dm/memory.c new file mode 100644 index 0000000000..7d9500aa91 --- /dev/null +++ b/test/dm/memory.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2022 + * Texas Instruments Incorporated, <www.ti.com> + */ + +#include <dm.h> +#include <dm/test.h> +#include <test/test.h> +#include <test/ut.h> + +static int dm_test_memory(struct unit_test_state *uts) +{ + struct udevice *dev; + + ut_assertok(uclass_first_device_err(UCLASS_MEMORY, &dev)); + + return 0; +} + +DM_TEST(dm_test_memory, UT_TESTF_SCAN_FDT);