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| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2017-01-11 16:43:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-19 14:17:05 +0100 |
| commit | 219fb0c1436e4893a290ba270bc0e644d02465a3 (patch) | |
| tree | 19e2493358ee5014b59aa181bb73c186d6da02df /drivers/tty/serial/sh-sci.c | |
| parent | b2f20ed9c483859e2e83cfb1a3193e40760c18ad (diff) | |
| download | linux-219fb0c1436e4893a290ba270bc0e644d02465a3.tar.gz linux-219fb0c1436e4893a290ba270bc0e644d02465a3.tar.bz2 linux-219fb0c1436e4893a290ba270bc0e644d02465a3.zip | |
serial: sh-sci: Remove the platform data dma slave rx/tx channel IDs
Only SH platforms still use platform data for the sh-sci, and none of
them declare DMA channels connected to the SCI. Remove the corresponding
platform data fields and simplify the driver accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index a8607cacee6c..c6aa5b9c2bfd 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1387,20 +1387,14 @@ static void rx_timer_fn(unsigned long arg) } static struct dma_chan *sci_request_dma_chan(struct uart_port *port, - enum dma_transfer_direction dir, - unsigned int id) + enum dma_transfer_direction dir) { - dma_cap_mask_t mask; struct dma_chan *chan; struct dma_slave_config cfg; int ret; - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - - chan = dma_request_slave_channel_compat(mask, shdma_chan_filter, - (void *)(unsigned long)id, port->dev, - dir == DMA_MEM_TO_DEV ? "tx" : "rx"); + chan = dma_request_slave_channel(port->dev, + dir == DMA_MEM_TO_DEV ? "tx" : "rx"); if (!chan) { dev_warn(port->dev, "dma_request_slave_channel_compat failed\n"); @@ -1436,12 +1430,11 @@ static void sci_request_dma(struct uart_port *port) dev_dbg(port->dev, "%s: port %d\n", __func__, port->line); - if (!port->dev->of_node && - (s->cfg->dma_slave_tx <= 0 || s->cfg->dma_slave_rx <= 0)) + if (!port->dev->of_node) return; s->cookie_tx = -EINVAL; - chan = sci_request_dma_chan(port, DMA_MEM_TO_DEV, s->cfg->dma_slave_tx); + chan = sci_request_dma_chan(port, DMA_MEM_TO_DEV); dev_dbg(port->dev, "%s: TX: got channel %p\n", __func__, chan); if (chan) { s->chan_tx = chan; @@ -1463,7 +1456,7 @@ static void sci_request_dma(struct uart_port *port) INIT_WORK(&s->work_tx, work_fn_tx); } - chan = sci_request_dma_chan(port, DMA_DEV_TO_MEM, s->cfg->dma_slave_rx); + chan = sci_request_dma_chan(port, DMA_DEV_TO_MEM); dev_dbg(port->dev, "%s: RX: got channel %p\n", __func__, chan); if (chan) { unsigned int i; @@ -2706,10 +2699,6 @@ static int sci_init_single(struct platform_device *dev, port->serial_in = sci_serial_in; port->serial_out = sci_serial_out; - if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) - dev_dbg(port->dev, "DMA tx %d, rx %d\n", - p->dma_slave_tx, p->dma_slave_rx); - return 0; } |