From 225109957a74c571c49e860fcc4e81fa6df1079d Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Wed, 16 Jun 2010 14:46:09 +0100 Subject: mrst_max3110: add UART driver for Max3110 on Moorestown This driver enable the max3110 device, it can be used as a system console. the IRQ needs be enabled if user want a better performance. MRST max3110 works in 3.684MHz clock, which supports 230400 as its maximum rate. Signed-off-by: Feng Tang Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/serial/mrst_max3110.h | 59 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 drivers/serial/mrst_max3110.h (limited to 'drivers/serial/mrst_max3110.h') diff --git a/drivers/serial/mrst_max3110.h b/drivers/serial/mrst_max3110.h new file mode 100644 index 00000000000..363478acb2c --- /dev/null +++ b/drivers/serial/mrst_max3110.h @@ -0,0 +1,59 @@ +#ifndef _MRST_MAX3110_H +#define _MRST_MAX3110_H + +#define MAX3110_HIGH_CLK 0x1 /* 3.6864 MHZ */ +#define MAX3110_LOW_CLK 0x0 /* 1.8432 MHZ */ + +/* status bits for all 4 MAX3110 operate modes */ +#define MAX3110_READ_DATA_AVAILABLE (1 << 15) +#define MAX3110_WRITE_BUF_EMPTY (1 << 14) + +#define WC_TAG (3 << 14) +#define RC_TAG (1 << 14) +#define WD_TAG (2 << 14) +#define RD_TAG (0 << 14) + +/* bits def for write configuration */ +#define WC_FIFO_ENABLE_MASK (1 << 13) +#define WC_FIFO_ENABLE (0 << 13) + +#define WC_SW_SHDI (1 << 12) + +#define WC_IRQ_MASK (0xF << 8) +#define WC_TXE_IRQ_ENABLE (1 << 11) /* TX empty irq */ +#define WC_RXA_IRQ_ENABLE (1 << 10) /* RX availabe irq */ +#define WC_PAR_HIGH_IRQ_ENABLE (1 << 9) +#define WC_REC_ACT_IRQ_ENABLE (1 << 8) + +#define WC_IRDA_ENABLE (1 << 7) + +#define WC_STOPBITS_MASK (1 << 6) +#define WC_2_STOPBITS (1 << 6) +#define WC_1_STOPBITS (0 << 6) + +#define WC_PARITY_ENABLE_MASK (1 << 5) +#define WC_PARITY_ENABLE (1 << 5) + +#define WC_WORDLEN_MASK (1 << 4) +#define WC_7BIT_WORD (1 << 4) +#define WC_8BIT_WORD (0 << 4) + +#define WC_BAUD_DIV_MASK (0xF) +#define WC_BAUD_DR1 (0x0) +#define WC_BAUD_DR2 (0x1) +#define WC_BAUD_DR4 (0x2) +#define WC_BAUD_DR8 (0x3) +#define WC_BAUD_DR16 (0x4) +#define WC_BAUD_DR32 (0x5) +#define WC_BAUD_DR64 (0x6) +#define WC_BAUD_DR128 (0x7) +#define WC_BAUD_DR3 (0x8) +#define WC_BAUD_DR6 (0x9) +#define WC_BAUD_DR12 (0xA) +#define WC_BAUD_DR24 (0xB) +#define WC_BAUD_DR48 (0xC) +#define WC_BAUD_DR96 (0xD) +#define WC_BAUD_DR192 (0xE) +#define WC_BAUD_DR384 (0xF) + +#endif -- cgit v1.2.3-70-g09d2