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authorEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>2016-11-25 15:59:07 +0100
committerVinod Koul <vinod.koul@intel.com>2016-11-30 04:27:50 +0100
commitbd2c6636cc59c4626a04d9918953a107f88eaff9 (patch)
tree7344ad146e1b6be5f86b5584563195b060cd489f /drivers/tty
parentdmaengine: DW DMAC: enable memory-to-memory transfers support (diff)
downloadlinux-bd2c6636cc59c4626a04d9918953a107f88eaff9.tar.xz
linux-bd2c6636cc59c4626a04d9918953a107f88eaff9.zip
dmaengine: DW DMAC: add multi-block property to device tree
Several versions of DW DMAC have multi block transfers hardware support. Hardware support of multi block transfers is disabled by default if we use DT to configure DMAC and software emulation of multi block transfers used instead. Add multi-block property, so it is possible to enable hardware multi block transfers (if present) via DT. Switch from per device is_nollp variable to multi_block array to be able enable/disable multi block transfers separately per channel. Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_lpss.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index 886fcf37f291..c4593ec68ff7 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -157,12 +157,12 @@ static int byt_serial_setup(struct lpss8250 *lpss, struct uart_port *port)
static const struct dw_dma_platform_data qrk_serial_dma_pdata = {
.nr_channels = 2,
.is_private = true,
- .is_nollp = true,
.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
.chan_priority = CHAN_PRIORITY_ASCENDING,
.block_size = 4095,
.nr_masters = 1,
.data_width = {4},
+ .multi_block = {0},
};
static void qrk_serial_setup_dma(struct lpss8250 *lpss, struct uart_port *port)