linux/include
Miquel Raynal 226d6cb3cb
spi: spi-mem: Estimate the time taken by operations
In the SPI-NAND layer, we currently make list of operation variants from
the fastest one to the slowest and there is a bit of logic in the core
to go over them and pick the first one that is supported by the
controller, ie. the fastest one among the supported ops.

This kind of logic only works if all operations run at the same
frequency, but as soon as we introduce per operation max frequencies it
is not longer as obvious which operation will be faster, especially
since it also depends on the PCB/controller frequency limitation.

One way to make this choice more clever is to go over all the
variants and for each of them derive an indicator which will help derive
the theoretical best. In this case, we derive a theoretical duration for
the entire operation and we take the smallest one.

Add a helper that parses the spi-mem operation and returns this value.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20250110-winbond-6-11-rc1-quad-support-v3-20-7ab4bd56cf6e@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-01-10 15:20:04 +00:00
..
acpi common: switch back from remove_new() to remove() callback 2024-11-25 17:31:39 -08:00
asm-generic - Fix a case where posix timers with a thread-group-wide target would miss 2024-12-01 12:41:21 -08:00
clocksource x86/hyperv: Fix hv tsc page based sched_clock for hibernation 2024-12-09 18:42:42 +00:00
crypto This update includes the following changes: 2024-11-19 10:28:41 -08:00
cxl
drm Merge tag 'drm-misc-fixes-2024-12-05' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes 2024-12-06 08:40:47 +10:00
dt-bindings Char/Misc/IIO/Whatever driver subsystem updates for 6.13-rc1 2024-11-29 11:58:27 -08:00
keys
kunit module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
kvm KVM: arm64: vgic: Kill VGIC_MAX_PRIVATE definition 2024-11-20 17:21:08 -08:00
linux spi: spi-mem: Estimate the time taken by operations 2025-01-10 15:20:04 +00:00
math-emu
media
memory
misc
net Nothing major here. Over the last two weeks we gathered only around 2025-01-03 14:36:54 -08:00
pcmcia
ras
rdma
rv
scsi Random number generator updates for Linux 6.13-rc1. 2024-11-19 10:43:44 -08:00
soc ARC fixes for 6.13-r32 or rc4 2024-12-15 15:38:12 -08:00
sound ALSA: hda: cs35l56: Remove calls to cs35l56_force_sync_asp1_registers_from_cache() 2024-12-06 13:54:06 +01:00
target
trace mm/damon: fix order of arguments in damos_before_apply tracepoint 2024-12-05 19:54:47 -08:00
uapi Nothing major here. Over the last two weeks we gathered only around 2025-01-03 14:36:54 -08:00
ufs scsi: ufs: core: Add missing post notify for power mode change 2024-12-04 13:22:59 -05:00
vdso
video - Improved handling of LCD power states and interactions with the fbdev subsystem. 2024-11-22 16:29:57 -08:00
xen