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| author | Peter Maydell | 2017-01-09 12:56:49 +0100 |
|---|---|---|
| committer | Peter Maydell | 2017-01-09 12:56:49 +0100 |
| commit | 8305f9bdf7ca41ee5cabe018fb37b73472c1162d (patch) | |
| tree | 72a6405226f7e5dfe46e6ceaec16b4eeb61c9169 /include/hw/i2c | |
| parent | Merge remote-tracking branch 'remotes/gonglei/tags/cryptodev-next-20161224' i... (diff) | |
| parent | hw/ssi/imx_spi.c: Remove MSGDATA register support (diff) | |
| download | qemu-8305f9bdf7ca41ee5cabe018fb37b73472c1162d.tar.gz qemu-8305f9bdf7ca41ee5cabe018fb37b73472c1162d.tar.xz qemu-8305f9bdf7ca41ee5cabe018fb37b73472c1162d.zip | |
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20170109' into staging
target-arm queue:
* i2c: Allow I2C devices to NAK start events
* hw/char: QOM'ify exynos4210_uart.c
* clean up and refactor virt-acpi-build.c
* virt-acpi-build: Don't incorrectly claim architectural timer
to be edge-triggered
* m25p80: Don't let rogue SPI controllers cause buffer overruns
* imx_spi: Remove broken MSGDATA register support
# gpg: Signature made Mon 09 Jan 2017 11:52:49 GMT
# gpg: using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20170109: (21 commits)
hw/ssi/imx_spi.c: Remove MSGDATA register support
m25p80: don't let rogue SPI controllers cause buffer overruns
hw/arm/virt-acpi-build: Don't incorrectly claim architectural timer to be edge-triggered
hw/arm/virt: remove VirtGuestInfo
hw/arm/virt-acpi-build: don't save VirtGuestInfo on AcpiBuildState
hw/arm/virt-acpi-build: remove redundant members from VirtGuestInfo
hw/arm/virt: pass VirtMachineState instead of VirtGuestInfo
hw/arm/virt: move VirtMachineState/Class to virt.h
hw/arm/virt: remove include/hw/arm/virt-acpi-build.h
hw/arm/virt: eliminate struct VirtGuestInfoState
hw/arm/virt: use VirtMachineState.gic_version
hw/arm/virt: parameter passing cleanups
hw/arm/virt-acpi-build: fadt: improve flag naming
hw/arm/virt-acpi-build: gtdt: improve flag naming
hw/arm/virt-acpi-build: name GIC CPU Interface Structure appropriately
hw/arm/virt-acpi-build: add all missing cpu_to_le's
hw/arm/virt: Don't incorrectly claim architectural timer to be edge-triggered
hw/arm/virt: Rename 'vbi' variables to 'vms'
hw/arm/virt: Merge VirtBoardInfo and VirtMachineState
hw/char: QOM'ify exynos4210_uart.c
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/hw/i2c')
| -rw-r--r-- | include/hw/i2c/i2c.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/include/hw/i2c/i2c.h b/include/hw/i2c/i2c.h index c4085aa366..2ce611d4c8 100644 --- a/include/hw/i2c/i2c.h +++ b/include/hw/i2c/i2c.h @@ -32,14 +32,22 @@ typedef struct I2CSlaveClass /* Callbacks provided by the device. */ int (*init)(I2CSlave *dev); - /* Master to slave. */ + /* Master to slave. Returns non-zero for a NAK, 0 for success. */ int (*send)(I2CSlave *s, uint8_t data); - /* Slave to master. */ + /* + * Slave to master. This cannot fail, the device should always + * return something here. Negative values probably result in 0xff + * and a possible log from the driver, and shouldn't be used. + */ int (*recv)(I2CSlave *s); - /* Notify the slave of a bus state change. */ - void (*event)(I2CSlave *s, enum i2c_event event); + /* + * Notify the slave of a bus state change. For start event, + * returns non-zero to NAK an operation. For other events the + * return code is not used and should be zero. + */ + int (*event)(I2CSlave *s, enum i2c_event event); } I2CSlaveClass; struct I2CSlave |