From 26f2bee1a3063ddd89f76a75b99adb32636f3513 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 8 Jan 2012 17:48:02 +0000 Subject: [PATCH] NET: sa11x0-ir: move sa1100_irda_txdma_irq Move the FIR DMA transmit completion function along-side the other FIR protocol functions. Signed-off-by: Russell King --- drivers/net/irda/sa1100_ir.c | 108 +++++++++++++++++------------------ 1 file changed, 53 insertions(+), 55 deletions(-) diff --git a/drivers/net/irda/sa1100_ir.c b/drivers/net/irda/sa1100_ir.c index 61b42d1265b4..0b5a2e2a7be4 100644 --- a/drivers/net/irda/sa1100_ir.c +++ b/drivers/net/irda/sa1100_ir.c @@ -261,6 +261,57 @@ static irqreturn_t sa1100_irda_sir_irq(struct net_device *dev, struct sa1100_ird /* * FIR format support. */ +static void sa1100_irda_firtxdma_irq(void *id) +{ + struct net_device *dev = id; + struct sa1100_irda *si = netdev_priv(dev); + struct sk_buff *skb; + + /* + * Wait for the transmission to complete. Unfortunately, + * the hardware doesn't give us an interrupt to indicate + * "end of frame". + */ + do + rmb(); + while (!(Ser2HSSR0 & HSSR0_TUR) || Ser2HSSR1 & HSSR1_TBY); + + /* + * Clear the transmit underrun bit. + */ + Ser2HSSR0 = HSSR0_TUR; + + /* + * Do we need to change speed? Note that we're lazy + * here - we don't free the old dma_rx.skb. We don't need + * to allocate a buffer either. + */ + sa1100_irda_check_speed(si); + + /* + * Start reception. This disables the transmitter for + * us. This will be using the existing RX buffer. + */ + sa1100_irda_rx_dma_start(si); + + /* Account and free the packet. */ + skb = si->dma_tx.skb; + if (skb) { + dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, + DMA_TO_DEVICE); + dev->stats.tx_packets ++; + dev->stats.tx_bytes += skb->len; + dev_kfree_skb_irq(skb); + si->dma_tx.skb = NULL; + } + + /* + * Make sure that the TX queue is available for sending + * (for retries). TX has priority over RX at all times. + */ + netif_wake_queue(dev); +} + static int sa1100_irda_fir_tx_start(struct sk_buff *skb, struct net_device *dev, struct sa1100_irda *si) { @@ -528,60 +579,6 @@ static irqreturn_t sa1100_irda_irq(int irq, void *dev_id) return si->irq(dev, si); } -/* - * TX DMA completion handler. - */ -static void sa1100_irda_txdma_irq(void *id) -{ - struct net_device *dev = id; - struct sa1100_irda *si = netdev_priv(dev); - struct sk_buff *skb; - - /* - * Wait for the transmission to complete. Unfortunately, - * the hardware doesn't give us an interrupt to indicate - * "end of frame". - */ - do - rmb(); - while (!(Ser2HSSR0 & HSSR0_TUR) || Ser2HSSR1 & HSSR1_TBY); - - /* - * Clear the transmit underrun bit. - */ - Ser2HSSR0 = HSSR0_TUR; - - /* - * Do we need to change speed? Note that we're lazy - * here - we don't free the old dma_rx.skb. We don't need - * to allocate a buffer either. - */ - sa1100_irda_check_speed(si); - - /* - * Start reception. This disables the transmitter for - * us. This will be using the existing RX buffer. - */ - sa1100_irda_rx_dma_start(si); - - /* Account and free the packet. */ - skb = si->dma_tx.skb; - if (skb) { - dma_unmap_single(si->dev, si->dma_tx.dma, skb->len, - DMA_TO_DEVICE); - dev->stats.tx_packets ++; - dev->stats.tx_bytes += skb->len; - dev_kfree_skb_irq(skb); - si->dma_tx.skb = NULL; - } - - /* - * Make sure that the TX queue is available for sending - * (for retries). TX has priority over RX at all times. - */ - netif_wake_queue(dev); -} - static int sa1100_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev) { struct sa1100_irda *si = netdev_priv(dev); @@ -730,7 +727,8 @@ static int sa1100_irda_start(struct net_device *dev) goto err_rx_dma; err = sa1100_request_dma(DMA_Ser2HSSPWr, "IrDA transmit", - sa1100_irda_txdma_irq, dev, &si->dma_tx.regs); + sa1100_irda_firtxdma_irq, dev, + &si->dma_tx.regs); if (err) goto err_tx_dma; -- 2.20.1