[ARM] 3242/2: AT91RM9200 support for 2.6 (Serial)

Patch from Andrew Victor

This patch adds support to the 2.6 kernel series for the Atmel
AT91RM9200 processor.

This patch is the Serial driver.

This version uses the newly re-written GPL'ed hardware headers.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 123 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91rm9200/at91rm9200_usart.h b/include/asm-arm/arch-at91rm9200/at91rm9200_usart.h
new file mode 100644
index 000000000000..79f851e31b9c
--- /dev/null
+++ b/include/asm-arm/arch-at91rm9200/at91rm9200_usart.h
@@ -0,0 +1,123 @@
+/*
+ * include/asm-arm/arch-at91rm9200/at91rm9200_usart.h
+ *
+ * Copyright (C) 2005 Ivan Kokshaysky
+ * Copyright (C) SAN People
+ *
+ * USART registers.
+ * Based on AT91RM9200 datasheet revision E.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef AT91RM9200_USART_H
+#define AT91RM9200_USART_H
+
+#define AT91_US_CR              0x00                    /* Control Register */
+#define         AT91_US_RSTRX           (1 <<  2)               /* Reset Receiver */
+#define         AT91_US_RSTTX           (1 <<  3)               /* Reset Transmitter */
+#define         AT91_US_RXEN            (1 <<  4)               /* Receiver Enable */
+#define         AT91_US_RXDIS           (1 <<  5)               /* Receiver Disable */
+#define         AT91_US_TXEN            (1 <<  6)               /* Transmitter Enable */
+#define         AT91_US_TXDIS           (1 <<  7)               /* Transmitter Disable */
+#define         AT91_US_RSTSTA          (1 <<  8)               /* Reset Status Bits */
+#define         AT91_US_STTBRK          (1 <<  9)               /* Start Break */
+#define         AT91_US_STPBRK          (1 << 10)               /* Stop Break */
+#define         AT91_US_STTTO           (1 << 11)               /* Start Time-out */
+#define         AT91_US_SENDA           (1 << 12)               /* Send Address */
+#define         AT91_US_RSTIT           (1 << 13)               /* Reset Iterations */
+#define         AT91_US_RSTNACK         (1 << 14)               /* Reset Non Acknowledge */
+#define         AT91_US_RETTO           (1 << 15)               /* Rearm Time-out */
+#define         AT91_US_DTREN           (1 << 16)               /* Data Terminal Ready Enable */
+#define         AT91_US_DTRDIS          (1 << 17)               /* Data Terminal Ready Disable */
+#define         AT91_US_RTSEN           (1 << 18)               /* Request To Send Enable */
+#define         AT91_US_RTSDIS          (1 << 19)               /* Request To Send Disable */
+
+#define AT91_US_MR              0x04                    /* Mode Register */
+#define         AT91_US_USMODE          (0xf <<  0)             /* Mode of the USART */
+#define                 AT91_US_USMODE_NORMAL           0
+#define                 AT91_US_USMODE_RS485            1
+#define                 AT91_US_USMODE_HWHS             2
+#define                 AT91_US_USMODE_MODEM            3
+#define                 AT91_US_USMODE_ISO7816_T0       4
+#define                 AT91_US_USMODE_ISO7816_T1       6
+#define                 AT91_US_USMODE_IRDA             8
+#define         AT91_US_USCLKS          (3   <<  4)             /* Clock Selection */
+#define         AT91_US_CHRL            (3   <<  6)             /* Character Length */
+#define                 AT91_US_CHRL_5                  (0 <<  6)
+#define                 AT91_US_CHRL_6                  (1 <<  6)
+#define                 AT91_US_CHRL_7                  (2 <<  6)
+#define                 AT91_US_CHRL_8                  (3 <<  6)
+#define         AT91_US_SYNC            (1 <<  8)               /* Synchronous Mode Select */
+#define         AT91_US_PAR             (7 <<  9)               /* Parity Type */
+#define                 AT91_US_PAR_EVEN                (0 <<  9)
+#define                 AT91_US_PAR_ODD                 (1 <<  9)
+#define                 AT91_US_PAR_SPACE               (2 <<  9)
+#define                 AT91_US_PAR_MARK                (3 <<  9)
+#define                 AT91_US_PAR_NONE                (4 <<  9)
+#define                 AT91_US_PAR_MULTI_DROP          (6 <<  9)
+#define         AT91_US_NBSTOP          (3 << 12)               /* Number of Stop Bits */
+#define                 AT91_US_NBSTOP_1                (0 << 12)
+#define                 AT91_US_NBSTOP_1_5              (1 << 12)
+#define                 AT91_US_NBSTOP_2                (2 << 12)
+#define         AT91_US_CHMODE          (3 << 14)               /* Channel Mode */
+#define                 AT91_US_CHMODE_NORMAL           (0 << 14)
+#define                 AT91_US_CHMODE_ECHO             (1 << 14)
+#define                 AT91_US_CHMODE_LOC_LOOP         (2 << 14)
+#define                 AT91_US_CHMODE_REM_LOOP         (3 << 14)
+#define         AT91_US_MSBF            (1 << 16)               /* Bit Order */
+#define         AT91_US_MODE9           (1 << 17)               /* 9-bit Character Length */
+#define         AT91_US_CLKO            (1 << 18)               /* Clock Output Select */
+#define         AT91_US_OVER            (1 << 19)               /* Oversampling Mode */
+#define         AT91_US_INACK           (1 << 20)               /* Inhibit Non Acknowledge */
+#define         AT91_US_DSNACK          (1 << 21)               /* Disable Successive NACK */
+#define         AT91_US_MAX_ITER        (7 << 24)               /* Max Iterations */
+#define         AT91_US_FILTER          (1 << 28)               /* Infrared Receive Line Filter */
+
+#define AT91_US_IER             0x08                    /* Interrupt Enable Register */
+#define         AT91_US_RXRDY           (1 <<  0)               /* Receiver Ready */
+#define         AT91_US_TXRDY           (1 <<  1)               /* Transmitter Ready */
+#define         AT91_US_RXBRK           (1 <<  2)               /* Break Received / End of Break */
+#define         AT91_US_ENDRX           (1 <<  3)               /* End of Receiver Transfer */
+#define         AT91_US_ENDTX           (1 <<  4)               /* End of Transmitter Transfer */
+#define         AT91_US_OVRE            (1 <<  5)               /* Overrun Error */
+#define         AT91_US_FRAME           (1 <<  6)               /* Framing Error */
+#define         AT91_US_PARE            (1 <<  7)               /* Parity Error */
+#define         AT91_US_TIMEOUT         (1 <<  8)               /* Receiver Time-out */
+#define         AT91_US_TXEMPTY         (1 <<  9)               /* Transmitter Empty */
+#define         AT91_US_ITERATION       (1 << 10)               /* Max number of Repetitions Reached */
+#define         AT91_US_TXBUFE          (1 << 11)               /* Transmission Buffer Empty */
+#define         AT91_US_RXBUFF          (1 << 12)               /* Reception Buffer Full */
+#define         AT91_US_NACK            (1 << 13)               /* Non Acknowledge */
+#define         AT91_US_RIIC            (1 << 16)               /* Ring Indicator Input Change */
+#define         AT91_US_DSRIC           (1 << 17)               /* Data Set Ready Input Change */
+#define         AT91_US_DCDIC           (1 << 18)               /* Data Carrier Detect Input Change */
+#define         AT91_US_CTSIC           (1 << 19)               /* Clear to Send Input Change */
+#define         AT91_US_RI              (1 << 20)               /* RI */
+#define         AT91_US_DSR             (1 << 21)               /* DSR */
+#define         AT91_US_DCD             (1 << 22)               /* DCD */
+#define         AT91_US_CTS             (1 << 23)               /* CTS */
+
+#define AT91_US_IDR             0x0c                    /* Interrupt Disable Register */
+#define AT91_US_IMR             0x10                    /* Interrupt Mask Register */
+#define AT91_US_CSR             0x14                    /* Channel Status Register */
+#define AT91_US_RHR             0x18                    /* Receiver Holding Register */
+#define AT91_US_THR             0x1c                    /* Transmitter Holding Register */
+
+#define AT91_US_BRGR            0x20                    /* Baud Rate Generator Register */
+#define         AT91_US_CD              (0xffff << 0)           /* Clock Divider */
+
+#define AT91_US_RTOR            0x24                    /* Receiver Time-out Register */
+#define         AT91_US_TO              (0xffff << 0)           /* Time-out Value */
+
+#define AT91_US_TTGR            0x28                    /* Transmitter Timeguard Register */
+#define         AT91_US_TG              (0xff << 0)             /* Timeguard Value */
+
+#define AT91_US_FIDI            0x40                    /* FI DI Ratio Register */
+#define AT91_US_NER             0x44                    /* Number of Errors Register */
+#define AT91_US_IF              0x4c                    /* IrDA Filter Register */
+
+#endif