net: ll_temac: Allow configuration of IRQ coalescing
This allows custom setup of IRQ coalescing for platforms using legacy
platform_device. The irq timeout and count parameters can be used for
tuning cpu load vs. latency.
I have maintained the 0x00000400 bit in TX_CHNL_CTRL. It is specified as
unused in the documentation I have available. It does not make any
difference in the hardware I have available, so it is left in to not risk
breaking other platforms where it might be used.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/platform_data/xilinx-ll-temac.h b/include/linux/platform_data/xilinx-ll-temac.h
index b0b8238..368530f 100644
--- a/include/linux/platform_data/xilinx-ll-temac.h
+++ b/include/linux/platform_data/xilinx-ll-temac.h
@@ -22,6 +22,11 @@ struct ll_temac_platform_data {
* they share the same DCR bus bridge.
*/
struct mutex *indirect_mutex;
+ /* DMA channel control setup */
+ u8 tx_irq_timeout; /* TX Interrupt Delay Time-out */
+ u8 tx_irq_count; /* TX Interrupt Coalescing Threshold Count */
+ u8 rx_irq_timeout; /* RX Interrupt Delay Time-out */
+ u8 rx_irq_count; /* RX Interrupt Coalescing Threshold Count */
};
#endif /* __LINUX_XILINX_LL_TEMAC_H */