Searched hist:e4fb03fe10c5e7a5d9aef7cefe815253274fb9ee (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/tty/serial/8250/ |
| H A D | 8250_dma.c | diff e4fb03fe10c5e7a5d9aef7cefe815253274fb9ee Fri Apr 22 13:06:11 CDT 2022 Miquel Raynal <miquel.raynal@bootlin.com> serial: 8250: dma: Allow driver operations before starting DMA transfers
One situation where this could be used is when configuring the UART
controller to be the DMA flow controller. This is a typical case where
the driver might need to program a few more registers before starting a
DMA transfer. Provide the necessary infrastructure to support this
case.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220422180615.9098-6-miquel.raynal@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| H A D | 8250.h | diff e4fb03fe10c5e7a5d9aef7cefe815253274fb9ee Fri Apr 22 13:06:11 CDT 2022 Miquel Raynal <miquel.raynal@bootlin.com> serial: 8250: dma: Allow driver operations before starting DMA transfers
One situation where this could be used is when configuring the UART
controller to be the DMA flow controller. This is a typical case where
the driver might need to program a few more registers before starting a
DMA transfer. Provide the necessary infrastructure to support this
case.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220422180615.9098-6-miquel.raynal@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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