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| author | Laurent Pinchart <laurentp@cse-semaphore.com> | 2008-07-24 18:36:37 +0200 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-07-28 07:48:04 -0500 |
| commit | 7485d26b7e13ee8ff82adb271ac90a996c1fe830 (patch) | |
| tree | 13bc7e6f30aa6cfb039e780b597f264eccf9d3df /drivers/serial/cpm_uart/cpm_uart.h | |
| parent | dc2380ec8572fcd7f7e9579afc9fb223300d922f (diff) | |
| download | talos-obmc-linux-7485d26b7e13ee8ff82adb271ac90a996c1fe830.tar.gz talos-obmc-linux-7485d26b7e13ee8ff82adb271ac90a996c1fe830.zip | |
cpm_uart: Modem control lines support
This patch replaces the get_mctrl/set_mctrl stubs with modem control line
read/write access through the GPIO lib.
Available modem control lines are described in the device tree using GPIO
bindings. The driver expect a GPIO pin for each of the CTS, RTS, DCD, DSR,
DTR and RI signals. Unused control lines can be left out.
Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'drivers/serial/cpm_uart/cpm_uart.h')
| -rw-r--r-- | drivers/serial/cpm_uart/cpm_uart.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/serial/cpm_uart/cpm_uart.h b/drivers/serial/cpm_uart/cpm_uart.h index 5c76e0ae0582..5999ef5ac78e 100644 --- a/drivers/serial/cpm_uart/cpm_uart.h +++ b/drivers/serial/cpm_uart/cpm_uart.h @@ -50,6 +50,15 @@ #define SCC_WAIT_CLOSING 100 +#define GPIO_CTS 0 +#define GPIO_RTS 1 +#define GPIO_DCD 2 +#define GPIO_DSR 3 +#define GPIO_DTR 4 +#define GPIO_RI 5 + +#define NUM_GPIOS (GPIO_RI+1) + struct uart_cpm_port { struct uart_port port; u16 rx_nrfifos; @@ -82,6 +91,7 @@ struct uart_cpm_port { int wait_closing; /* value to combine with opcode to form cpm command */ u32 command; + int gpios[NUM_GPIOS]; }; extern int cpm_uart_nr; |
