leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
master
linux/drivers/soc/litex/Kconfig

21 lines
473 B
Plaintext
Raw Permalink Normal View History

drivers/soc/litex: add LiteX SoC Controller driver This commit adds driver for the FPGA-based LiteX SoC Controller from LiteX SoC builder. Co-developed-by: Mateusz Holenko <mholenko@antmicro.com> Signed-off-by: Mateusz Holenko <mholenko@antmicro.com> Signed-off-by: Pawel Czarnecki <pczarnecki@internships.antmicro.com> Signed-off-by: Stafford Horne <shorne@gmail.com>
2020-10-13 14:45:52 +00:00
# SPDX-License_Identifier: GPL-2.0
menu "Enable LiteX SoC Builder specific drivers"
config LITEX
bool
config LITEX_SOC_CONTROLLER
tristate "Enable LiteX SoC Controller driver"
depends on OF || COMPILE_TEST
soc: litex: Properly depend on HAS_IOMEM The LiteX SOC controller driver makes use of IOMEM functions like devm_platform_ioremap_resource(), which are only available if CONFIG_HAS_IOMEM is defined. This causes the driver to be enable under make ARCH=um allyesconfig, even though it won't build. By adding a dependency on HAS_IOMEM, the driver will not be enabled on architectures which don't support it. Fixes: 22447a99c97e ("drivers/soc/litex: add LiteX SoC Controller driver") Signed-off-by: David Gow <davidgow@google.com> [shorne@gmail.com: Fix typo in commit message pointed out in review] Signed-off-by: Stafford Horne <shorne@gmail.com>
2021-01-27 03:36:04 +00:00
depends on HAS_IOMEM
drivers/soc/litex: add LiteX SoC Controller driver This commit adds driver for the FPGA-based LiteX SoC Controller from LiteX SoC builder. Co-developed-by: Mateusz Holenko <mholenko@antmicro.com> Signed-off-by: Mateusz Holenko <mholenko@antmicro.com> Signed-off-by: Pawel Czarnecki <pczarnecki@internships.antmicro.com> Signed-off-by: Stafford Horne <shorne@gmail.com>
2020-10-13 14:45:52 +00:00
select LITEX
help
This option enables the SoC Controller Driver which verifies
drivers/soc/litex: make 'litex_[set|get]_reg()' methods private The 'litex_[set|get]_reg()' methods use the 'reg_size' parameter to specify the width of the LiteX CSR (MMIO) register being accessed. Since 'u64' is the widest data being supported, the value of 'reg_size' MUST be between 1 and sizeof(u64), which SHOULD be checked at runtime if these methods are publicly available for use by other LiteX device drivers. At the same time, none of the existing (or foreseeable) LiteX device drivers have a need to access registers whose size is unknown during compilation. As such, all LiteX device drivers should use fixed-width accessor methods such as 'litex_[write|read][8|16|32|64]()'. This patch renames 'litex_[set|get]_reg()' to '_litex_[set|get]_reg()', indicating that they should NOT be directly called from outside of the 'include/linux/litex.h' header file. Signed-off-by: Gabriel Somlo <gsomlo@gmail.com> Signed-off-by: Stafford Horne <shorne@gmail.com>
2021-01-12 17:31:44 +00:00
LiteX CSR access and provides common litex_[read|write]*
drivers/soc/litex: add LiteX SoC Controller driver This commit adds driver for the FPGA-based LiteX SoC Controller from LiteX SoC builder. Co-developed-by: Mateusz Holenko <mholenko@antmicro.com> Signed-off-by: Mateusz Holenko <mholenko@antmicro.com> Signed-off-by: Pawel Czarnecki <pczarnecki@internships.antmicro.com> Signed-off-by: Stafford Horne <shorne@gmail.com>
2020-10-13 14:45:52 +00:00
accessors.
All drivers that use functions from litex.h must depend on
LITEX.
endmenu
Reference in New Issue Copy Permalink