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hw/misc: add a toy i2c echo device

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Add an example I2C device to demonstrate how a slave may master the bus
and send data asynchronously to another slave.

The device will echo whatever it is sent to the device identified by the
first byte received.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
[ clg: integrated fixes :
  https://lore.kernel.org/qemu-devel/Y3yMKAhOkYGtnkOp@cormorant.local/ ]
Message-Id: <20220601210831.67259-7-its@irrelevant.dk>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Klaus Jensen 2023-03-02 13:57:50 +01:00 • committed by Cédric Le Goater
parent 791cb95f23
commit b14037f37f
2 changed files with 158 additions and 0 deletions
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2
hw/misc/meson.build
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@ -128,6 +128,8 @@ softmmu_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_rng.c'))
softmmu_ss.add(when: 'CONFIG_GRLIB', if_true: files('grlib_ahb_apb_pnp.c'))
softmmu_ss.add(when: 'CONFIG_I2C', if_true: files('i2c-echo.c'))
specific_ss.add(when: 'CONFIG_AVR_POWER', if_true: files('avr_power.c'))
specific_ss.add(when: 'CONFIG_MAC_VIA', if_true: files('mac_via.c'))