diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Kconfig | 17 | ||||
| -rw-r--r-- | drivers/misc/Makefile | 3 | ||||
| -rw-r--r-- | drivers/misc/sl28cpld.c | 105 |
3 files changed, 124 insertions, 1 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index a8baaeaf5cf..7029bb7b5c5 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -453,6 +453,15 @@ config FS_LOADER The consumer driver would then use this loader to program whatever, ie. the FPGA device. +config SPL_FS_LOADER + bool "Enable loader driver for file system" + help + This is file system generic loader which can be used to load + the file image from the storage into target such as memory. + + The consumer driver would then use this loader to program whatever, + ie. the FPGA device. + config GDSYS_SOC bool "Enable gdsys SOC driver" depends on MISC @@ -503,4 +512,12 @@ config ESM_PMIC config FSL_IFC bool +config SL28CPLD + bool "Enable Kontron sl28cpld multi-function driver" + depends on DM_I2C + help + Support for the Kontron sl28cpld management controller. This is + the base driver which provides common access methods for the + sub-drivers. + endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index f9826d2462d..f22eff601a1 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -37,7 +37,7 @@ obj-$(CONFIG_FSL_IFC) += fsl_ifc.o obj-$(CONFIG_FSL_IIM) += fsl_iim.o obj-$(CONFIG_FSL_MC9SDZ60) += mc9sdz60.o obj-$(CONFIG_FSL_SEC_MON) += fsl_sec_mon.o -obj-$(CONFIG_FS_LOADER) += fs_loader.o +obj-$(CONFIG_$(SPL_)FS_LOADER) += fs_loader.o obj-$(CONFIG_GDSYS_IOEP) += gdsys_ioep.o obj-$(CONFIG_GDSYS_RXAUI_CTRL) += gdsys_rxaui_ctrl.o obj-$(CONFIG_GDSYS_SOC) += gdsys_soc.o @@ -82,3 +82,4 @@ obj-$(CONFIG_MICROCHIP_FLEXCOM) += microchip_flexcom.o obj-$(CONFIG_K3_AVS0) += k3_avs.o obj-$(CONFIG_ESM_K3) += k3_esm.o obj-$(CONFIG_ESM_PMIC) += esm_pmic.o +obj-$(CONFIG_SL28CPLD) += sl28cpld.o diff --git a/drivers/misc/sl28cpld.c b/drivers/misc/sl28cpld.c new file mode 100644 index 00000000000..01ef1c6178f --- /dev/null +++ b/drivers/misc/sl28cpld.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2021 Michael Walle <michael@walle.cc> + */ + +#include <common.h> +#include <dm.h> +#include <i2c.h> + +struct sl28cpld_child_plat { + uint offset; +}; + +/* + * The access methods works either with the first argument being a child + * device or with the MFD device itself. + */ +static int sl28cpld_read_child(struct udevice *dev, uint offset) +{ + struct sl28cpld_child_plat *plat = dev_get_parent_plat(dev); + struct udevice *mfd = dev_get_parent(dev); + + return dm_i2c_reg_read(mfd, offset + plat->offset); +} + +int sl28cpld_read(struct udevice *dev, uint offset) +{ + if (dev->driver == DM_DRIVER_GET(sl28cpld)) + return dm_i2c_reg_read(dev, offset); + else + return sl28cpld_read_child(dev, offset); +} + +static int sl28cpld_write_child(struct udevice *dev, uint offset, + uint8_t value) +{ + struct sl28cpld_child_plat *plat = dev_get_parent_plat(dev); + struct udevice *mfd = dev_get_parent(dev); + + return dm_i2c_reg_write(mfd, offset + plat->offset, value); +} + +int sl28cpld_write(struct udevice *dev, uint offset, uint8_t value) +{ + if (dev->driver == DM_DRIVER_GET(sl28cpld)) + return dm_i2c_reg_write(dev, offset, value); + else + return sl28cpld_write_child(dev, offset, value); +} + +int sl28cpld_update(struct udevice *dev, uint offset, uint8_t clear, + uint8_t set) +{ + int val; + + val = sl28cpld_read(dev, offset); + if (val < 0) + return val; + + val &= ~clear; + val |= set; + + return sl28cpld_write(dev, offset, val); +} + +static int sl28cpld_probe(struct udevice *dev) +{ + i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS | + DM_I2C_CHIP_WR_ADDRESS); + + return 0; +} + +static int sl28cpld_child_post_bind(struct udevice *dev) +{ + struct sl28cpld_child_plat *plat = dev_get_parent_plat(dev); + int offset; + + if (!dev_has_ofnode(dev)) + return 0; + + offset = dev_read_u32_default(dev, "reg", -1); + if (offset == -1) + return -EINVAL; + + plat->offset = offset; + + return 0; +} + +static const struct udevice_id sl28cpld_ids[] = { + { .compatible = "kontron,sl28cpld" }, + {} +}; + +U_BOOT_DRIVER(sl28cpld) = { + .name = "sl28cpld", + .id = UCLASS_NOP, + .of_match = sl28cpld_ids, + .probe = sl28cpld_probe, + .bind = dm_scan_fdt_dev, + .flags = DM_FLAG_PRE_RELOC, + .per_child_plat_auto = sizeof(struct sl28cpld_child_plat), + .child_post_bind = sl28cpld_child_post_bind, +}; |