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| author | Peter Maydell <peter.maydell@linaro.org> | 2021-07-02 11:40:13 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-07-09 16:09:12 +0100 |
| commit | ad06d56fc7155c7893b18efecb9fe0f2e9124eaf (patch) | |
| tree | 3ba5a94c14ceca3675e0913582e393903146714f /hw/gpio/trace-events | |
| parent | 455736df2cfd3a980782986d597132776d630823 (diff) | |
| download | qemu-ad06d56fc7155c7893b18efecb9fe0f2e9124eaf.zip qemu-ad06d56fc7155c7893b18efecb9fe0f2e9124eaf.tar.gz qemu-ad06d56fc7155c7893b18efecb9fe0f2e9124eaf.tar.bz2 | |
hw/gpio/pl061: Honour Luminary PL061 PUR and PDR registers
The Luminary variant of the PL061 has registers GPIOPUR and GPIOPDR
which lets the guest configure whether the GPIO lines are pull-up,
pull-down, or truly floating. Instead of assuming all lines are pulled
high, honour the PUR and PDR registers.
For the plain PL061, continue to assume that lines have an external
pull-up resistor, as we did before.
The stellaris board actually relies on this behaviour -- the CD line
of the ssd0323 display device is connected to GPIO output C7, and it
is only because of a different bug which we're about to fix that we
weren't incorrectly driving this line high on reset and putting the
ssd0323 into data mode.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'hw/gpio/trace-events')
| -rw-r--r-- | hw/gpio/trace-events | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/gpio/trace-events b/hw/gpio/trace-events index 442be94..eb5fb47 100644 --- a/hw/gpio/trace-events +++ b/hw/gpio/trace-events @@ -14,7 +14,7 @@ nrf51_gpio_set(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 nrf51_gpio_update_output_irq(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 # pl061.c -pl061_update(const char *id, uint32_t dir, uint32_t data) "%s GPIODIR 0x%x GPIODATA 0x%x" +pl061_update(const char *id, uint32_t dir, uint32_t data, uint32_t pullups, uint32_t floating) "%s GPIODIR 0x%x GPIODATA 0x%x pullups 0x%x floating 0x%x" pl061_set_output(const char *id, int gpio, int level) "%s setting output %d to %d" pl061_input_change(const char *id, int gpio, int level) "%s input %d changed to %d" pl061_update_istate(const char *id, uint32_t istate, uint32_t im, int level) "%s GPIORIS 0x%x GPIOIE 0x%x interrupt level %d" |