diff options
Diffstat (limited to 'drivers/tty/serial/mxs-auart.c')
| -rw-r--r-- | drivers/tty/serial/mxs-auart.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index f85b8e6d0346..10e9d70b5c40 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -32,7 +32,6 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> -#include <linux/pinctrl/consumer.h> #include <linux/of_device.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> @@ -134,10 +133,10 @@ enum mxs_auart_type { struct mxs_auart_port { struct uart_port port; -#define MXS_AUART_DMA_CONFIG 0x1 #define MXS_AUART_DMA_ENABLED 0x2 #define MXS_AUART_DMA_TX_SYNC 2 /* bit 2 */ #define MXS_AUART_DMA_RX_READY 3 /* bit 3 */ +#define MXS_AUART_RTSCTS 4 /* bit 4 */ unsigned long flags; unsigned int ctrl; enum mxs_auart_type devtype; @@ -640,7 +639,8 @@ static void mxs_auart_settermios(struct uart_port *u, * we can only implement the DMA support for auart * in mx28. */ - if (is_imx28_auart(s) && (s->flags & MXS_AUART_DMA_CONFIG)) { + if (is_imx28_auart(s) + && test_bit(MXS_AUART_RTSCTS, &s->flags)) { if (!mxs_auart_dma_init(s)) /* enable DMA tranfer */ ctrl2 |= AUART_CTRL2_TXDMAE | AUART_CTRL2_RXDMAE @@ -1008,7 +1008,8 @@ static int serial_mxs_probe_dt(struct mxs_auart_port *s, } s->port.line = ret; - s->flags |= MXS_AUART_DMA_CONFIG; + if (of_get_property(np, "fsl,uart-has-rtscts", NULL)) + set_bit(MXS_AUART_RTSCTS, &s->flags); return 0; } @@ -1021,7 +1022,6 @@ static int mxs_auart_probe(struct platform_device *pdev) u32 version; int ret = 0; struct resource *r; - struct pinctrl *pinctrl; s = kzalloc(sizeof(struct mxs_auart_port), GFP_KERNEL); if (!s) { @@ -1035,12 +1035,6 @@ static int mxs_auart_probe(struct platform_device *pdev) else if (ret < 0) goto out_free; - pinctrl = devm_pinctrl_get_select_default(&pdev->dev); - if (IS_ERR(pinctrl)) { - ret = PTR_ERR(pinctrl); - goto out_free; - } - if (of_id) { pdev->id_entry = of_id->data; s->devtype = pdev->id_entry->driver_data; |