diff options
| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2019-08-05 21:56:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-04 13:43:51 +0300 |
| commit | 4ff69041eccf4edb412bbe7296458d3e1be10dd2 (patch) | |
| tree | fa141620355b90afe67d025eaa892b44cfabcc6e /drivers | |
| parent | fd60e8e4a701043831370f6f635de2738fec07c8 (diff) | |
| download | linux-4ff69041eccf4edb412bbe7296458d3e1be10dd2.tar.xz | |
tty: serial: fsl_lpuart: Introduce lpuart32_configure()
Code doing final steps of TX/RX configuration in lpuart32_startup()
and lpuart_resume() is identical, so move it into a standalone
subroutine.
Signed-off-by: Andrey 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/20190805185701.22863-4-andrew.smirnov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 48 |
1 files changed, 21 insertions, 27 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 4b59801a0a0c..1286daa1be79 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1502,6 +1502,24 @@ static int lpuart_startup(struct uart_port *port) return 0; } +static void lpuart32_configure(struct lpuart_port *sport) +{ + unsigned long temp; + + if (sport->lpuart_dma_rx_use) { + /* RXWATER must be 0 */ + temp = lpuart32_read(&sport->port, UARTWATER); + temp &= ~(UARTWATER_WATER_MASK << UARTWATER_RXWATER_OFF); + lpuart32_write(&sport->port, temp, UARTWATER); + } + temp = lpuart32_read(&sport->port, UARTCTRL); + if (!sport->lpuart_dma_rx_use) + temp |= UARTCTRL_RIE; + if (!sport->lpuart_dma_tx_use) + temp |= UARTCTRL_TIE; + lpuart32_write(&sport->port, temp, UARTCTRL); +} + static int lpuart32_startup(struct uart_port *port) { struct lpuart_port *sport = container_of(port, struct lpuart_port, port); @@ -1530,18 +1548,7 @@ static int lpuart32_startup(struct uart_port *port) lpuart_rx_dma_startup(sport); lpuart_tx_dma_startup(sport); - if (sport->lpuart_dma_rx_use) { - /* RXWATER must be 0 */ - temp = lpuart32_read(&sport->port, UARTWATER); - temp &= ~(UARTWATER_WATER_MASK << UARTWATER_RXWATER_OFF); - lpuart32_write(&sport->port, temp, UARTWATER); - } - temp = lpuart32_read(&sport->port, UARTCTRL); - if (!sport->lpuart_dma_rx_use) - temp |= UARTCTRL_RIE; - if (!sport->lpuart_dma_tx_use) - temp |= UARTCTRL_TIE; - lpuart32_write(&sport->port, temp, UARTCTRL); + lpuart32_configure(sport); spin_unlock_irqrestore(&sport->port.lock, flags); return 0; @@ -2579,21 +2586,8 @@ static int lpuart_resume(struct device *dev) lpuart_tx_dma_startup(sport); - if (lpuart_is_32(sport)) { - if (sport->lpuart_dma_rx_use) { - /* RXWATER must be 0 */ - temp = lpuart32_read(&sport->port, UARTWATER); - temp &= ~(UARTWATER_WATER_MASK << - UARTWATER_RXWATER_OFF); - lpuart32_write(&sport->port, temp, UARTWATER); - } - temp = lpuart32_read(&sport->port, UARTCTRL); - if (!sport->lpuart_dma_rx_use) - temp |= UARTCTRL_RIE; - if (!sport->lpuart_dma_tx_use) - temp |= UARTCTRL_TIE; - lpuart32_write(&sport->port, temp, UARTCTRL); - } + if (lpuart_is_32(sport)) + lpuart32_configure(sport); uart_resume_port(&lpuart_reg, &sport->port); |