serial: omap: Request pins using pinctrl framework

Request pins using pinctrl framework. Only show a warning
on error as some boards set the pins in the bootloader
even if CONFIG_PINCTRL is enabled.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 743e8e1249da05e0080e85dff05d91ab28f901e4..f175385bb30469fad148769bad0c07edea4790d9 100644 (file)
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -40,6 +40,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/gpio.h>
+#include <linux/pinctrl/consumer.h>
 
 #include <plat/omap-serial.h>
 
@@ -108,6 +109,7 @@ struct uart_omap_port {
        u32                     latency;
        u32                     calc_latency;
        struct work_struct      qos_work;
+       struct pinctrl          *pins;
 };
 
 #define to_uart_omap_port(p)   ((container_of((p), struct uart_omap_port, port)))
@@ -1377,6 +1379,13 @@ static int __devinit serial_omap_probe(struct platform_device *pdev)
                goto err_port_line;
        }
 
+       up->pins = devm_pinctrl_get_select_default(&pdev->dev);
+       if (IS_ERR(up->pins)) {
+               dev_warn(&pdev->dev, "did not get pins for uart%i error: %li\n",
+                        up->port.line, PTR_ERR(up->pins));
+               up->pins = NULL;
+       }
+
        sprintf(up->name, "OMAP UART%d", up->port.line);
        up->port.mapbase = mem->start;
        up->port.membase = devm_ioremap(&pdev->dev, mem->start,