Commit fd60e8e4 authored by Andrey Smirnov's avatar Andrey Smirnov Committed by Greg Kroah-Hartman

tty: serial: fsl_lpuart: Introduce lpuart_rx_dma_startup()

Code doing initial DMA RX configuration in lpuart_startup() and
lpuart32_startup() is exactly the same, so move it into a standalone
subroutine.
Signed-off-by: default avatarAndrey Smirnov <andrew.smirnov@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linux-imx@nxp.com
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20190805185701.22863-3-andrew.smirnov@gmail.comSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5982199c
......@@ -1455,6 +1455,21 @@ static void lpuart_tx_dma_startup(struct lpuart_port *sport)
}
}
static void lpuart_rx_dma_startup(struct lpuart_port *sport)
{
if (sport->dma_rx_chan && !lpuart_start_rx_dma(sport)) {
/* set Rx DMA timeout */
sport->dma_rx_timeout = msecs_to_jiffies(DMA_RX_TIMEOUT);
if (!sport->dma_rx_timeout)
sport->dma_rx_timeout = 1;
sport->lpuart_dma_rx_use = true;
rx_dma_timer_init(sport);
} else {
sport->lpuart_dma_rx_use = false;
}
}
static int lpuart_startup(struct uart_port *port)
{
struct lpuart_port *sport = container_of(port, struct lpuart_port, port);
......@@ -1479,18 +1494,7 @@ static int lpuart_startup(struct uart_port *port)
temp |= UARTCR2_RIE | UARTCR2_TIE | UARTCR2_RE | UARTCR2_TE;
writeb(temp, sport->port.membase + UARTCR2);
if (sport->dma_rx_chan && !lpuart_start_rx_dma(sport)) {
/* set Rx DMA timeout */
sport->dma_rx_timeout = msecs_to_jiffies(DMA_RX_TIMEOUT);
if (!sport->dma_rx_timeout)
sport->dma_rx_timeout = 1;
sport->lpuart_dma_rx_use = true;
rx_dma_timer_init(sport);
} else {
sport->lpuart_dma_rx_use = false;
}
lpuart_rx_dma_startup(sport);
lpuart_tx_dma_startup(sport);
spin_unlock_irqrestore(&sport->port.lock, flags);
......@@ -1522,18 +1526,8 @@ static int lpuart32_startup(struct uart_port *port)
temp |= UARTCTRL_RE | UARTCTRL_TE | UARTCTRL_ILIE;
lpuart32_write(&sport->port, temp, UARTCTRL);
if (sport->dma_rx_chan && !lpuart_start_rx_dma(sport)) {
/* set Rx DMA timeout */
sport->dma_rx_timeout = msecs_to_jiffies(DMA_RX_TIMEOUT);
if (!sport->dma_rx_timeout)
sport->dma_rx_timeout = 1;
sport->lpuart_dma_rx_use = true;
rx_dma_timer_init(sport);
} else {
sport->lpuart_dma_rx_use = false;
}
lpuart_rx_dma_startup(sport);
lpuart_tx_dma_startup(sport);
if (sport->lpuart_dma_rx_use) {
......
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