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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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225109957a
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 <feng.tang@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
#ifndef _MRST_MAX3110_H
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#define _MRST_MAX3110_H
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#define MAX3110_HIGH_CLK 0x1 /* 3.6864 MHZ */
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#define MAX3110_LOW_CLK 0x0 /* 1.8432 MHZ */
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/* status bits for all 4 MAX3110 operate modes */
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#define MAX3110_READ_DATA_AVAILABLE (1 << 15)
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#define MAX3110_WRITE_BUF_EMPTY (1 << 14)
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#define WC_TAG (3 << 14)
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#define RC_TAG (1 << 14)
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#define WD_TAG (2 << 14)
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#define RD_TAG (0 << 14)
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/* bits def for write configuration */
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#define WC_FIFO_ENABLE_MASK (1 << 13)
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#define WC_FIFO_ENABLE (0 << 13)
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#define WC_SW_SHDI (1 << 12)
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#define WC_IRQ_MASK (0xF << 8)
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#define WC_TXE_IRQ_ENABLE (1 << 11) /* TX empty irq */
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#define WC_RXA_IRQ_ENABLE (1 << 10) /* RX availabe irq */
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#define WC_PAR_HIGH_IRQ_ENABLE (1 << 9)
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#define WC_REC_ACT_IRQ_ENABLE (1 << 8)
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#define WC_IRDA_ENABLE (1 << 7)
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#define WC_STOPBITS_MASK (1 << 6)
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#define WC_2_STOPBITS (1 << 6)
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#define WC_1_STOPBITS (0 << 6)
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#define WC_PARITY_ENABLE_MASK (1 << 5)
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#define WC_PARITY_ENABLE (1 << 5)
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#define WC_WORDLEN_MASK (1 << 4)
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#define WC_7BIT_WORD (1 << 4)
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#define WC_8BIT_WORD (0 << 4)
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#define WC_BAUD_DIV_MASK (0xF)
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#define WC_BAUD_DR1 (0x0)
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#define WC_BAUD_DR2 (0x1)
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#define WC_BAUD_DR4 (0x2)
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#define WC_BAUD_DR8 (0x3)
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#define WC_BAUD_DR16 (0x4)
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#define WC_BAUD_DR32 (0x5)
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#define WC_BAUD_DR64 (0x6)
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#define WC_BAUD_DR128 (0x7)
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#define WC_BAUD_DR3 (0x8)
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#define WC_BAUD_DR6 (0x9)
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#define WC_BAUD_DR12 (0xA)
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#define WC_BAUD_DR24 (0xB)
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#define WC_BAUD_DR48 (0xC)
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#define WC_BAUD_DR96 (0xD)
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#define WC_BAUD_DR192 (0xE)
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#define WC_BAUD_DR384 (0xF)
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#endif
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