Re: [PATCH 2/4] serial: 8250: of: Load TX FIFO Load Size from DT
From: Rob Herring <robh@kernel.org>
Date: 2016-09-16 19:20:51
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linux-devicetree, lkml
On Thu, Sep 08, 2016 at 11:12:19AM -0500, tthayer@opensource.altera.com wrote:
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From: Thor Thayer <redacted> Initialize the tx_loadsz parameter if it is defined in the device tree. Signed-off-by: Thor Thayer <redacted> --- drivers/tty/serial/8250/8250_of.c | 6 ++++++ 1 file changed, 6 insertions(+)diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c index 38963d7..3e4be2f 100644 --- a/drivers/tty/serial/8250/8250_of.c +++ b/drivers/tty/serial/8250/8250_of.c@@ -195,6 +195,7 @@ static int of_platform_serial_probe(struct platform_device *ofdev) switch (port_type) { case PORT_8250 ... PORT_MAX_8250: { + u32 prop; struct uart_8250_port port8250; memset(&port8250, 0, sizeof(port8250)); port8250.port = port;@@ -202,6 +203,11 @@ static int of_platform_serial_probe(struct platform_device *ofdev) if (port.fifosize) port8250.capabilities = UART_CAP_FIFO; + /* Check for TX fifo load size */ + if (of_property_read_u32(ofdev->dev.of_node, + "tx-loadsz", &prop) == 0) + port8250.tx_loadsz = prop;
This can be simplified to: of_property_read_u32(ofdev->dev.of_node, "tx-loadsz", &port8250.tx_loadsz);
+ if (of_property_read_bool(ofdev->dev.of_node, "auto-flow-control")) port8250.capabilities |= UART_CAP_AFE; -- 1.7.9.5