diff options
Diffstat (limited to 'include/asm-arm/arch-l7200/sib.h')
| -rw-r--r-- | include/asm-arm/arch-l7200/sib.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/include/asm-arm/arch-l7200/sib.h b/include/asm-arm/arch-l7200/sib.h new file mode 100644 index 0000000..bf4364e --- /dev/null +++ b/include/asm-arm/arch-l7200/sib.h @@ -0,0 +1,119 @@ +/****************************************************************************/ +/* + * linux/include/asm-arm/arch-l7200/sib.h + * + * Registers and helper functions for the Serial Interface Bus. + * + * (C) Copyright 2000, S A McConnell (samcconn@cotw.com) + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +/****************************************************************************/ + +#define SIB_OFF 0x00040000 /* Offset from IO_START to the SIB reg's. */ + +/* IO_START and IO_BASE are defined in hardware.h */ + +#define SIB_START (IO_START + SIB_OFF) /* Physical addr of the SIB reg. */ +#define SIB_BASE (IO_BASE + SIB_OFF) /* Virtual addr of the SIB reg. */ + +/* Offsets from the start of the SIB for all the registers. */ + +/* Define the SIB registers for use by device drivers and the kernel. */ + +typedef struct +{ + unsigned int MCCR; /* SIB Control Register Offset: 0x00 */ + unsigned int RES1; /* Reserved Offset: 0x04 */ + unsigned int MCDR0; /* SIB Data Register 0 Offset: 0x08 */ + unsigned int MCDR1; /* SIB Data Register 1 Offset: 0x0c */ + unsigned int MCDR2; /* SIB Data Register 2 (UCB1x00) Offset: 0x10 */ + unsigned int RES2; /* Reserved Offset: 0x14 */ + unsigned int MCSR; /* SIB Status Register Offset: 0x18 */ +} SIB_Interface; + +#define SIB ((volatile SIB_Interface *) (SIB_BASE)) + +/* MCCR */ + +#define INTERNAL_FREQ 9216000 /* Hertz */ +#define AUDIO_FREQ 5000 /* Hertz */ +#define TELECOM_FREQ 5000 /* Hertz */ + +#define AUDIO_DIVIDE (INTERNAL_FREQ / (32 * AUDIO_FREQ)) +#define TELECOM_DIVIDE (INTERNAL_FREQ / (32 * TELECOM_FREQ)) + +#define MCCR_ASD57 AUDIO_DIVIDE +#define MCCR_TSD57 (TELECOM_DIVIDE << 8) +#define MCCR_MCE (1 << 16) /* SIB enable */ +#define MCCR_ECS (1 << 17) /* External Clock Select */ +#define MCCR_ADM (1 << 18) /* A/D Data Sampling */ +#define MCCR_PMC (1 << 26) /* PIN Multiplexer Control */ + + +#define GET_ASD ((SIB->MCCR >> 0) & 0x3f) /* Audio Sample Rate Div. */ +#define GET_TSD ((SIB->MCCR >> 8) & 0x3f) /* Telcom Sample Rate Div. */ +#define GET_MCE ((SIB->MCCR >> 16) & 0x01) /* SIB Enable */ +#define GET_ECS ((SIB->MCCR >> 17) & 0x01) /* External Clock Select */ +#define GET_ADM ((SIB->MCCR >> 18) & 0x01) /* A/D Data Sampling Mode */ +#define GET_TTM ((SIB->MCCR >> 19) & 0x01) /* Telco Trans. FIFO I mask */ +#define GET_TRM ((SIB->MCCR >> 20) & 0x01) /* Telco Recv. FIFO I mask */ +#define GET_ATM ((SIB->MCCR >> 21) & 0x01) /* Audio Trans. FIFO I mask */ +#define GET_ARM ((SIB->MCCR >> 22) & 0x01) /* Audio Recv. FIFO I mask */ +#define GET_LBM ((SIB->MCCR >> 23) & 0x01) /* Loop Back Mode */ +#define GET_ECP ((SIB->MCCR >> 24) & 0x03) /* Extern. Clck Prescale sel */ +#define GET_PMC ((SIB->MCCR >> 26) & 0x01) /* PIN Multiplexer Control */ +#define GET_ERI ((SIB->MCCR >> 27) & 0x01) /* External Read Interrupt */ +#define GET_EWI ((SIB->MCCR >> 28) & 0x01) /* External Write Interrupt */ + +/* MCDR0 */ + +#define AUDIO_RECV ((SIB->MCDR0 >> 4) & 0xfff) +#define AUDIO_WRITE(v) ((SIB->MCDR0 = (v & 0xfff) << 4)) + +/* MCDR1 */ + +#define TELECOM_RECV ((SIB->MCDR1 >> 2) & 032fff) +#define TELECOM_WRITE(v) ((SIB->MCDR1 = (v & 0x3fff) << 2)) + + +/* MCSR */ + +#define MCSR_ATU (1 << 4) /* Audio Transmit FIFO Underrun */ +#define MCSR_ARO (1 << 5) /* Audio Receive FIFO Underrun */ +#define MCSR_TTU (1 << 6) /* TELECOM Transmit FIFO Underrun */ +#define MCSR_TRO (1 << 7) /* TELECOM Receive FIFO Underrun */ + +#define MCSR_CLEAR_UNDERUN_BITS (MCSR_ATU | MCSR_ARO | MCSR_TTU | MCSR_TRO) + + +#define GET_ATS ((SIB->MCSR >> 0) & 0x01) /* Audio Transmit FIFO Service Req*/ +#define GET_ARS ((SIB->MCSR >> 1) & 0x01) /* Audio Recv FIFO Service Request*/ +#define GET_TTS ((SIB->MCSR >> 2) & 0x01) /* TELECOM Transmit FIFO Flag */ +#define GET_TRS ((SIB->MCSR >> 3) & 0x01) /* TELECOM Recv FIFO Service Req. */ +#define GET_ATU ((SIB->MCSR >> 4) & 0x01) /* Audio Transmit FIFO Underrun */ +#define GET_ARO ((SIB->MCSR >> 5) & 0x01) /* Audio Receive FIFO Underrun */ +#define GET_TTU ((SIB->MCSR >> 6) & 0x01) /* TELECOM Transmit FIFO Underrun */ +#define GET_TRO ((SIB->MCSR >> 7) & 0x01) /* TELECOM Receive FIFO Underrun */ +#define GET_ANF ((SIB->MCSR >> 8) & 0x01) /* Audio Transmit FIFO not full */ +#define GET_ANE ((SIB->MCSR >> 9) & 0x01) /* Audio Receive FIFO not empty */ +#define GET_TNF ((SIB->MCSR >> 10) & 0x01) /* Telecom Transmit FIFO not full */ +#define GET_TNE ((SIB->MCSR >> 11) & 0x01) /* Telecom Receive FIFO not empty */ +#define GET_CWC ((SIB->MCSR >> 12) & 0x01) /* Codec Write Complete */ +#define GET_CRC ((SIB->MCSR >> 13) & 0x01) /* Codec Read Complete */ +#define GET_ACE ((SIB->MCSR >> 14) & 0x01) /* Audio Codec Enabled */ +#define GET_TCE ((SIB->MCSR >> 15) & 0x01) /* Telecom Codec Enabled */ + +/* MCDR2 */ + +#define MCDR2_rW (1 << 16) + +#define WRITE_MCDR2(reg, data) (SIB->MCDR2 =((reg<<17)|MCDR2_rW|(data&0xffff))) +#define MCDR2_WRITE_COMPLETE GET_CWC + +#define INITIATE_MCDR2_READ(reg) (SIB->MCDR2 = (reg << 17)) +#define MCDR2_READ_COMPLETE GET_CRC +#define MCDR2_READ (SIB->MCDR2 & 0xffff) |
