scc2698.h
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/*
* scc2698.h
*
* driver for the IPOCTAL boards
*
* Copyright (C) 2009-2012 CERN (www.cern.ch)
* Author: Nicolas Serafini, EIC2 SA
* Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; version 2 of the License.
*/
#ifndef SCC2698_H_
#define SCC2698_H_
/*
* union scc2698_channel - Channel access to scc2698 IO
*
* dn value are only spacer.
*
*/
union scc2698_channel {
struct {
u8 d0, mr; /* Mode register 1/2*/
u8 d1, sr; /* Status register */
u8 d2, r1; /* reserved */
u8 d3, rhr; /* Receive holding register (R) */
u8 junk[8]; /* other crap for block control */
} __packed r; /* Read access */
struct {
u8 d0, mr; /* Mode register 1/2 */
u8 d1, csr; /* Clock select register */
u8 d2, cr; /* Command register */
u8 d3, thr; /* Transmit holding register */
u8 junk[8]; /* other crap for block control */
} __packed w; /* Write access */
};
/*
* union scc2698_block - Block access to scc2698 IO
*
* The scc2698 contain 4 block.
* Each block containt two channel a and b.
* dn value are only spacer.
*
*/
union scc2698_block {
struct {
u8 d0, mra; /* Mode register 1/2 (a) */
u8 d1, sra; /* Status register (a) */
u8 d2, r1; /* reserved */
u8 d3, rhra; /* Receive holding register (a) */
u8 d4, ipcr; /* Input port change register of block */
u8 d5, isr; /* Interrupt status register of block */
u8 d6, ctur; /* Counter timer upper register of block */
u8 d7, ctlr; /* Counter timer lower register of block */
u8 d8, mrb; /* Mode register 1/2 (b) */
u8 d9, srb; /* Status register (b) */
u8 da, r2; /* reserved */
u8 db, rhrb; /* Receive holding register (b) */
u8 dc, r3; /* reserved */
u8 dd, ip; /* Input port register of block */
u8 de, ctg; /* Start counter timer of block */
u8 df, cts; /* Stop counter timer of block */
} __packed r; /* Read access */
struct {
u8 d0, mra; /* Mode register 1/2 (a) */
u8 d1, csra; /* Clock select register (a) */
u8 d2, cra; /* Command register (a) */
u8 d3, thra; /* Transmit holding register (a) */
u8 d4, acr; /* Auxiliary control register of block */
u8 d5, imr; /* Interrupt mask register of block */
u8 d6, ctu; /* Counter timer upper register of block */
u8 d7, ctl; /* Counter timer lower register of block */
u8 d8, mrb; /* Mode register 1/2 (b) */
u8 d9, csrb; /* Clock select register (a) */
u8 da, crb; /* Command register (b) */
u8 db, thrb; /* Transmit holding register (b) */
u8 dc, r1; /* reserved */
u8 dd, opcr; /* Output port configuration register of block */
u8 de, r2; /* reserved */
u8 df, r3; /* reserved */
} __packed w; /* Write access */
};
#define MR1_CHRL_5_BITS (0x0 << 0)
#define MR1_CHRL_6_BITS (0x1 << 0)
#define MR1_CHRL_7_BITS (0x2 << 0)
#define MR1_CHRL_8_BITS (0x3 << 0)
#define MR1_PARITY_EVEN (0x1 << 2)
#define MR1_PARITY_ODD (0x0 << 2)
#define MR1_PARITY_ON (0x0 << 3)
#define MR1_PARITY_FORCE (0x1 << 3)
#define MR1_PARITY_OFF (0x2 << 3)
#define MR1_PARITY_SPECIAL (0x3 << 3)
#define MR1_ERROR_CHAR (0x0 << 5)
#define MR1_ERROR_BLOCK (0x1 << 5)
#define MR1_RxINT_RxRDY (0x0 << 6)
#define MR1_RxINT_FFULL (0x1 << 6)
#define MR1_RxRTS_CONTROL_ON (0x1 << 7)
#define MR1_RxRTS_CONTROL_OFF (0x0 << 7)
#define MR2_STOP_BITS_LENGTH_1 (0x7 << 0)
#define MR2_STOP_BITS_LENGTH_2 (0xF << 0)
#define MR2_CTS_ENABLE_TX_ON (0x1 << 4)
#define MR2_CTS_ENABLE_TX_OFF (0x0 << 4)
#define MR2_TxRTS_CONTROL_ON (0x1 << 5)
#define MR2_TxRTS_CONTROL_OFF (0x0 << 5)
#define MR2_CH_MODE_NORMAL (0x0 << 6)
#define MR2_CH_MODE_ECHO (0x1 << 6)
#define MR2_CH_MODE_LOCAL (0x2 << 6)
#define MR2_CH_MODE_REMOTE (0x3 << 6)
#define CR_ENABLE_RX (0x1 << 0)
#define CR_DISABLE_RX (0x1 << 1)
#define CR_ENABLE_TX (0x1 << 2)
#define CR_DISABLE_TX (0x1 << 3)
#define CR_CMD_RESET_MR (0x1 << 4)
#define CR_CMD_RESET_RX (0x2 << 4)
#define CR_CMD_RESET_TX (0x3 << 4)
#define CR_CMD_RESET_ERR_STATUS (0x4 << 4)
#define CR_CMD_RESET_BREAK_CHANGE (0x5 << 4)
#define CR_CMD_START_BREAK (0x6 << 4)
#define CR_CMD_STOP_BREAK (0x7 << 4)
#define CR_CMD_ASSERT_RTSN (0x8 << 4)
#define CR_CMD_NEGATE_RTSN (0x9 << 4)
#define CR_CMD_SET_TIMEOUT_MODE (0xA << 4)
#define CR_CMD_DISABLE_TIMEOUT_MODE (0xC << 4)
#define SR_RX_READY (0x1 << 0)
#define SR_FIFO_FULL (0x1 << 1)
#define SR_TX_READY (0x1 << 2)
#define SR_TX_EMPTY (0x1 << 3)
#define SR_OVERRUN_ERROR (0x1 << 4)
#define SR_PARITY_ERROR (0x1 << 5)
#define SR_FRAMING_ERROR (0x1 << 6)
#define SR_RECEIVED_BREAK (0x1 << 7)
#define SR_ERROR (0xF0)
#define ACR_DELTA_IP0_IRQ_EN (0x1 << 0)
#define ACR_DELTA_IP1_IRQ_EN (0x1 << 1)
#define ACR_DELTA_IP2_IRQ_EN (0x1 << 2)
#define ACR_DELTA_IP3_IRQ_EN (0x1 << 3)
#define ACR_CT_Mask (0x7 << 4)
#define ACR_CExt (0x0 << 4)
#define ACR_CTxCA (0x1 << 4)
#define ACR_CTxCB (0x2 << 4)
#define ACR_CClk16 (0x3 << 4)
#define ACR_TExt (0x4 << 4)
#define ACR_TExt16 (0x5 << 4)
#define ACR_TClk (0x6 << 4)
#define ACR_TClk16 (0x7 << 4)
#define ACR_BRG_SET1 (0x0 << 7)
#define ACR_BRG_SET2 (0x1 << 7)
#define TX_CLK_75 (0x0 << 0)
#define TX_CLK_110 (0x1 << 0)
#define TX_CLK_38400 (0x2 << 0)
#define TX_CLK_150 (0x3 << 0)
#define TX_CLK_300 (0x4 << 0)
#define TX_CLK_600 (0x5 << 0)
#define TX_CLK_1200 (0x6 << 0)
#define TX_CLK_2000 (0x7 << 0)
#define TX_CLK_2400 (0x8 << 0)
#define TX_CLK_4800 (0x9 << 0)
#define TX_CLK_1800 (0xA << 0)
#define TX_CLK_9600 (0xB << 0)
#define TX_CLK_19200 (0xC << 0)
#define RX_CLK_75 (0x0 << 4)
#define RX_CLK_110 (0x1 << 4)
#define RX_CLK_38400 (0x2 << 4)
#define RX_CLK_150 (0x3 << 4)
#define RX_CLK_300 (0x4 << 4)
#define RX_CLK_600 (0x5 << 4)
#define RX_CLK_1200 (0x6 << 4)
#define RX_CLK_2000 (0x7 << 4)
#define RX_CLK_2400 (0x8 << 4)
#define RX_CLK_4800 (0x9 << 4)
#define RX_CLK_1800 (0xA << 4)
#define RX_CLK_9600 (0xB << 4)
#define RX_CLK_19200 (0xC << 4)
#define OPCR_MPOa_RTSN (0x0 << 0)
#define OPCR_MPOa_C_TO (0x1 << 0)
#define OPCR_MPOa_TxC1X (0x2 << 0)
#define OPCR_MPOa_TxC16X (0x3 << 0)
#define OPCR_MPOa_RxC1X (0x4 << 0)
#define OPCR_MPOa_RxC16X (0x5 << 0)
#define OPCR_MPOa_TxRDY (0x6 << 0)
#define OPCR_MPOa_RxRDY_FF (0x7 << 0)
#define OPCR_MPOb_RTSN (0x0 << 4)
#define OPCR_MPOb_C_TO (0x1 << 4)
#define OPCR_MPOb_TxC1X (0x2 << 4)
#define OPCR_MPOb_TxC16X (0x3 << 4)
#define OPCR_MPOb_RxC1X (0x4 << 4)
#define OPCR_MPOb_RxC16X (0x5 << 4)
#define OPCR_MPOb_TxRDY (0x6 << 4)
#define OPCR_MPOb_RxRDY_FF (0x7 << 4)
#define OPCR_MPP_INPUT (0x0 << 7)
#define OPCR_MPP_OUTPUT (0x1 << 7)
#define IMR_TxRDY_A (0x1 << 0)
#define IMR_RxRDY_FFULL_A (0x1 << 1)
#define IMR_DELTA_BREAK_A (0x1 << 2)
#define IMR_COUNTER_READY (0x1 << 3)
#define IMR_TxRDY_B (0x1 << 4)
#define IMR_RxRDY_FFULL_B (0x1 << 5)
#define IMR_DELTA_BREAK_B (0x1 << 6)
#define IMR_INPUT_PORT_CHANGE (0x1 << 7)
#define ISR_TxRDY_A (0x1 << 0)
#define ISR_RxRDY_FFULL_A (0x1 << 1)
#define ISR_DELTA_BREAK_A (0x1 << 2)
#define ISR_COUNTER_READY (0x1 << 3)
#define ISR_TxRDY_B (0x1 << 4)
#define ISR_RxRDY_FFULL_B (0x1 << 5)
#define ISR_DELTA_BREAK_B (0x1 << 6)
#define ISR_INPUT_PORT_CHANGE (0x1 << 7)
#define ACK_INT_REQ0 0
#define ACK_INT_REQ1 2
#endif /* SCC2698_H_ */