Re: [RFC] serial: sc16is7xx: Use DT sub-nodes for UART ports

From: Andreas FÃrber
Date: Mon Aug 06 2018 - 12:21:44 EST


Am 06.08.2018 um 01:26 schrieb Andreas FÃrber:
> This is to allow using serdev.
>
> Signed-off-by: Andreas FÃrber <afaerber@xxxxxxx>
> ---
> drivers/tty/serial/sc16is7xx.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
> index 243c96025053..ad7267274f65 100644
> --- a/drivers/tty/serial/sc16is7xx.c
> +++ b/drivers/tty/serial/sc16is7xx.c
> @@ -1213,9 +1213,31 @@ static int sc16is7xx_probe(struct device *dev,
> SC16IS7XX_IOCONTROL_SRESET_BIT);
>
> for (i = 0; i < devtype->nr_uart; ++i) {
> +#ifdef CONFIG_OF

Looks like this and below need to be CONFIG_OF_ADDRESS (build failure
reported for sparc).

Regards,
Andreas

> + struct device_node *np;
> + struct platform_device *pdev;
> + char name[6] = "uartx";
> +#endif
> +
> s->p[i].line = i;
> /* Initialize port data */
> +#ifdef CONFIG_OF
> + name[4] = '0' + i;
> + np = of_get_child_by_name(dev->of_node, name);
> + if (IS_ERR(np)) {
> + ret = PTR_ERR(np);
> + goto out_ports;
> + }
> + pdev = of_platform_device_create(np, NULL, dev);
> + if (IS_ERR(pdev)) {
> + ret = PTR_ERR(pdev);
> + goto out_ports;
> + }
> + platform_set_drvdata(pdev, dev_get_drvdata(dev));
> + s->p[i].port.dev = &pdev->dev;
> +#else
> s->p[i].port.dev = dev;
> +#endif
> s->p[i].port.irq = irq;
> s->p[i].port.type = PORT_SC16IS7XX;
> s->p[i].port.fifosize = SC16IS7XX_FIFO_SIZE;
> @@ -1271,6 +1293,9 @@ static int sc16is7xx_probe(struct device *dev,
> for (i--; i >= 0; i--) {
> uart_remove_one_port(&sc16is7xx_uart, &s->p[i].port);
> clear_bit(s->p[i].port.line, &sc16is7xx_lines);
> +#ifdef CONFIG_OF
> + of_platform_device_destroy(s->p[i].port.dev, NULL);
> +#endif
> }
>
> #ifdef CONFIG_GPIOLIB

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