| commit | 3c77412b4a5e144bebf06cc668dc4b35b59b4607 | |
| author | Guenter Roeck <linux@roeck-us.net> | |
| Thu, 23 Jan 2020 15:22:42 +0000 (23 15:22 +0000) | ||
| committer | Peter Maydell <peter.maydell@linaro.org> | |
| Thu, 23 Jan 2020 16:34:15 +0000 (23 16:34 +0000) | ||
| tree | 01ec1f7d4bf5c7e1c1106e9e021ec590dbb50e08 | treesnapshot (tar.gz zip) |
| parent | 3a5d3a6f58ddd4027b9bcf6fe58f2a0224712c07 | commitdiff |
hw/char/exynos4210_uart: Add receive DMA support
To support receive DMA, we need to inform the DMA controller if receive data
is available. Otherwise the DMA controller keeps requesting data, causing
receive errors.
Implement this using an interrupt line. The instantiating code then needs
to connect the interrupt with the matching DMA controller GPIO pin.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200123052540.6132-8-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To support receive DMA, we need to inform the DMA controller if receive data
is available. Otherwise the DMA controller keeps requesting data, causing
receive errors.
Implement this using an interrupt line. The instantiating code then needs
to connect the interrupt with the matching DMA controller GPIO pin.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200123052540.6132-8-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| hw/char/exynos4210_uart.c | diffblobblamehistory | |
| hw/char/trace-events | diffblobblamehistory |