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Subject[PATCH v3 0/7] gpio: mockup: improve the user-space testing interface
From: Bartosz Golaszewski <>

Hi Marc,

this is a trimmed down version of the previous series. All irq_sim patches
from the previous implementation were dropped. The only change in irq_sim now
is addition of the irq_sim_get_type() helper. We store the irq type in the
irq_set_type() callback and allow users to retrieve it with the new function.

The entire logic handling the line state now lives directly in the only user
that needs it - the GPIO testing module. Since the GPIO user API only supports
edge interrupts, level types are not supported. This functionality is only
needed for user-space tests. The testing module tracks the line state and makes
sure to avoid impossible situations (like firing a rising edge interrupt if
the line is being driven low).

Other gpio-mockup patches are unchanged - the only change in patch 7 is the
line state tracking.

v1 -> v2:
- instead of providing the irq_sim_get_type() helper, move the irq type
logic into the simulator and provide a helper that allows users to specify
the type of the fired interrupt

v2 -> v3:
- switch back to having irq_sim_type() and put the line state logic into the
GPIO testing module

Bartosz Golaszewski (7):
irq/irq_sim: provide irq_sim_get_type()
gpio: mockup: add locking
gpio: mockup: implement get_multiple()
gpio: mockup: don't create the debugfs link named after the label
gpio: mockup: change the type of 'offset' to unsigned int
gpio: mockup: change the signature of unlocked get/set helpers
gpio: mockup: rework debugfs interface

drivers/gpio/gpio-mockup.c | 188 +++++++++++++++++++++++++++++++------
include/linux/irq_sim.h | 2 +
kernel/irq/irq_sim.c | 23 +++++
3 files changed, 186 insertions(+), 27 deletions(-)


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