static int omap_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct omap_irda *omap_ir = netdev_priv(dev);
int speed = irda_get_next_speed(skb);
int mtt = irda_get_mtt(skb);
int xbofs = irda_get_next_xbofs(skb);
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != omap_ir->speed && speed != -1)
omap_ir->newspeed = speed;
if (xbofs) /* Set number of addtional BOFS */
uart_reg_out(UART3_EBLR, xbofs + 1);
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (omap_ir->newspeed) {
omap_ir->newspeed = 0;
omap_irda_set_speed(dev, speed);
}
dev_kfree_skb(skb);
return 0;
}
netif_stop_queue(dev);
/* Copy skb data to DMA buffer */
skb_copy_from_linear_data(skb, omap_ir->tx_buf_dma_virt, skb->len);
/* Copy skb data to DMA buffer */
omap_ir->stats.tx_bytes += skb->len;
/* Set frame length */
uart_reg_out(UART3_TXFLL, (skb->len & 0xff));
uart_reg_out(UART3_TXFLH, (skb->len >> 8));
if (mtt > 1000)
mdelay(mtt / 1000);
else
udelay(mtt);
/* Start TX DMA transfer */
omap_start_tx_dma(omap_ir, skb->len);
/* We can free skb now because it's already in DMA buffer */
dev_kfree_skb(skb);
dev->trans_start = jiffies;
return 0;
}
static int omap1610_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct omap1610_irda *si = dev->priv;
int speed = irda_get_next_speed(skb);
int mtt = irda_get_mtt(skb);
int xbofs = irda_get_next_xbofs(skb);
__ECHO_IN;
/*
* Does this packet contain a request to change the interface
* speed? If so, remember it until we complete the transmission
* of this frame.
*/
if (speed != si->speed && speed != -1)
si->newspeed = speed;
if (xbofs) {
/* Set number of addtional BOFS */
omap_writeb(xbofs + 1, UART3_EBLR);
}
/*
* If this is an empty frame, we can bypass a lot.
*/
if (skb->len == 0) {
if (si->newspeed) {
si->newspeed = 0;
omap1610_irda_set_speed(dev, speed);
}
dev_kfree_skb(skb);
return 0;
}
netif_stop_queue(dev);
/* Copy skb data to DMA buffer */
memcpy(si->tx_buf_dma_virt, skb->data, skb->len);
si->stats.tx_bytes += skb->len;
/* Set frame length */
omap_writeb((skb->len & 0xff), UART3_TXFLL);
omap_writeb((skb->len >> 8), UART3_TXFLH);
if (mtt > 1000)
mdelay(mtt / 1000);
else
udelay(mtt);
/* Start TX DMA transfer */
omap1610_start_tx_dma(si, skb->len);
/* We can free skb now because it's already in DMA buffer */
dev_kfree_skb(skb);
dev->trans_start = jiffies;
__ECHO_OUT;
return 0;
}
