Re: [PATCH] serial: Do not treat the IIR register as a bitfield

From: Vignesh R
Date: Thu Mar 30 2017 - 02:17:14 EST


Hi,

On Thursday 30 March 2017 12:14 AM, Olliver Schinagl wrote:
> diff --git a/include/uapi/linux/serial_reg.h b/include/uapi/linux/serial_reg.h
> index 5db76880b4ad..489522389a10 100644
> --- a/include/uapi/linux/serial_reg.h
> +++ b/include/uapi/linux/serial_reg.h
> @@ -31,18 +31,18 @@
> #define UART_IERX_SLEEP 0x10 /* Enable sleep mode */
>
> #define UART_IIR 2 /* In: Interrupt ID Register */
> -#define UART_IIR_NO_INT 0x01 /* No interrupts pending */
> -#define UART_IIR_ID 0x0e /* Mask for the interrupt ID */
> #define UART_IIR_MSI 0x00 /* Modem status interrupt */
> +#define UART_IIR_NO_INT 0x01 /* No interrupts pending */
> #define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
> #define UART_IIR_RDI 0x04 /* Receiver data interrupt */
> #define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */
> -
> #define UART_IIR_BUSY 0x07 /* DesignWare APB Busy Detect */
> +#define UART_IIR_RX_TIMEOUT 0x0c /* DesignWare RX Timeout interrupt */
> +#define UART_IIR_MASK 0x0f /* DesignWare IIR mask */
>
> -#define UART_IIR_RX_TIMEOUT 0x0c /* OMAP RX Timeout interrupt */

You are removing UART_IIR_RX_TIMEOUT? Is this intended?

> #define UART_IIR_XOFF 0x10 /* OMAP XOFF/Special Character */
> #define UART_IIR_CTS_RTS_DSR 0x20 /* OMAP CTS/RTS/DSR Change */
> +#define UART_IIR_EXT_MASK 0x30 /* OMAP extended IIR mask */

--
Regards
Vignesh