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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-05-19 10:12:41 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-05-19 10:12:41 -0700 |
| commit | 8d0bc2b456103a34c11e01305cd1aed1cde579e5 (patch) | |
| tree | 5e1e6ad55cc9e2b5c5617f6f320114b8cff9e3f3 /drivers/serial/imx.c | |
| parent | 30ba3ead05763b172acaa65ae1be71af2a878940 (diff) | |
| parent | e40152ee1e1c7a63f4777791863215e3faa37a86 (diff) | |
| download | linux-8d0bc2b456103a34c11e01305cd1aed1cde579e5.tar.bz2 | |
Merge commit 'v2.6.34' into next
Diffstat (limited to 'drivers/serial/imx.c')
| -rw-r--r-- | drivers/serial/imx.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 4315b23590bd..eacb588a9345 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -120,7 +120,8 @@ #define MX2_UCR3_RXDMUXSEL (1<<2) /* RXD Muxed Input Select, on mx2/mx3 */ #define UCR3_INVT (1<<1) /* Inverted Infrared transmission */ #define UCR3_BPEN (1<<0) /* Preset registers enable */ -#define UCR4_CTSTL_32 (32<<10) /* CTS trigger level (32 chars) */ +#define UCR4_CTSTL_SHF 10 /* CTS trigger level shift */ +#define UCR4_CTSTL_MASK 0x3F /* CTS trigger is 6 bits wide */ #define UCR4_INVR (1<<9) /* Inverted infrared reception */ #define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */ #define UCR4_WKEN (1<<7) /* Wake interrupt enable */ @@ -591,6 +592,9 @@ static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode) return 0; } +/* half the RX buffer size */ +#define CTSTL 16 + static int imx_startup(struct uart_port *port) { struct imx_port *sport = (struct imx_port *)port; @@ -607,6 +611,10 @@ static int imx_startup(struct uart_port *port) if (USE_IRDA(sport)) temp |= UCR4_IRSC; + /* set the trigger level for CTS */ + temp &= ~(UCR4_CTSTL_MASK<< UCR4_CTSTL_SHF); + temp |= CTSTL<< UCR4_CTSTL_SHF; + writel(temp & ~UCR4_DREN, sport->port.membase + UCR4); if (USE_IRDA(sport)) { |