serial: clps711x: Add support for N_IRDA line discipline
This patch replace custom handling of IrDA feature with N_IRDA line discipline, so IrDA mode can be used with irtty driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -9,7 +9,6 @@ Required properties:
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Optional properties:
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Optional properties:
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- uart-use-ms: Indicate the UART has modem signal (DCD, DSR, CTS).
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- uart-use-ms: Indicate the UART has modem signal (DCD, DSR, CTS).
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- uart-use-irda: Indicate the UART use IRDA mode.
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Note: Each UART port should have an alias correctly numbered
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Note: Each UART port should have an alias correctly numbered
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in "aliases" node.
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in "aliases" node.
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@ -232,6 +232,16 @@ static void uart_clps711x_break_ctl(struct uart_port *port, int break_state)
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writel_relaxed(ubrlcr, port->membase + UBRLCR_OFFSET);
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writel_relaxed(ubrlcr, port->membase + UBRLCR_OFFSET);
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}
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}
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static void uart_clps711x_set_ldisc(struct uart_port *port, int ld)
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{
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if (!port->line) {
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struct clps711x_port *s = dev_get_drvdata(port->dev);
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regmap_update_bits(s->syscon, SYSCON_OFFSET, SYSCON1_SIREN,
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(ld == N_IRDA) ? SYSCON1_SIREN : 0);
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}
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}
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static int uart_clps711x_startup(struct uart_port *port)
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static int uart_clps711x_startup(struct uart_port *port)
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{
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{
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struct clps711x_port *s = dev_get_drvdata(port->dev);
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struct clps711x_port *s = dev_get_drvdata(port->dev);
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@ -342,6 +352,7 @@ static const struct uart_ops uart_clps711x_ops = {
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.stop_rx = uart_clps711x_nop_void,
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.stop_rx = uart_clps711x_nop_void,
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.enable_ms = uart_clps711x_nop_void,
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.enable_ms = uart_clps711x_nop_void,
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.break_ctl = uart_clps711x_break_ctl,
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.break_ctl = uart_clps711x_break_ctl,
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.set_ldisc = uart_clps711x_set_ldisc,
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.startup = uart_clps711x_startup,
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.startup = uart_clps711x_startup,
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.shutdown = uart_clps711x_shutdown,
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.shutdown = uart_clps711x_shutdown,
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.set_termios = uart_clps711x_set_termios,
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.set_termios = uart_clps711x_set_termios,
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@ -482,15 +493,8 @@ static int uart_clps711x_probe(struct platform_device *pdev)
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if (IS_ERR(s->syscon))
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if (IS_ERR(s->syscon))
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return PTR_ERR(s->syscon);
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return PTR_ERR(s->syscon);
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if (!index) {
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if (!index)
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bool use_irda;
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s->use_ms = of_property_read_bool(np, "uart-use-ms");
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s->use_ms = of_property_read_bool(np, "uart-use-ms");
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use_irda = of_property_read_bool(np, "uart-use-irda");
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regmap_update_bits(s->syscon, SYSCON_OFFSET,
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SYSCON1_SIREN,
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use_irda ? SYSCON1_SIREN : 0);
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}
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}
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}
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s->port.line = index;
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s->port.line = index;
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