144 lines
4.4 KiB
C
144 lines
4.4 KiB
C
/*
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* --------------------------------------------------------------------------
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*
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* ssc.h
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* define and struct for STMicroelectronics SSC device
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*
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* --------------------------------------------------------------------------
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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* --------------------------------------------------------------------------
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*/
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#ifndef STM_SSC_H
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#define STM_SSC_H 1
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/* SSC Baud Rate generator */
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#define SSC_BRG 0x0
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/* SSC Transmitter Buffer */
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#define SSC_TBUF 0x4
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/* SSC Receive Buffer */
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#define SSC_RBUF 0x8
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/*SSC Control */
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#define SSC_CTL 0xC
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#define SSC_CTL_DATA_WIDTH_9 0x8
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#define SSC_CTL_BM 0xf
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#define SSC_CTL_HB 0x10
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#define SSC_CTL_PH 0x20
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#define SSC_CTL_PO 0x40
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#define SSC_CTL_SR 0x80
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#define SSC_CTL_MS 0x100
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#define SSC_CTL_EN 0x200
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#define SSC_CTL_LPB 0x400
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#define SSC_CTL_EN_TX_FIFO 0x800
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#define SSC_CTL_EN_RX_FIFO 0x1000
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#define SSC_CTL_EN_CLST_RX 0x2000
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/* SSC Interrupt Enable */
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#define SSC_IEN 0x10
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#define SSC_IEN_RIEN 0x1
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#define SSC_IEN_TIEN 0x2
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#define SSC_IEN_TEEN 0x4
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#define SSC_IEN_REEN 0x8
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#define SSC_IEN_PEEN 0x10
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#define SSC_IEN_AASEN 0x40
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#define SSC_IEN_STOPEN 0x80
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#define SSC_IEN_ARBLEN 0x100
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#define SSC_IEN_NACKEN 0x400
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#define SSC_IEN_REPSTRTEN 0x800
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#define SSC_IEN_TX_FIFO_HALF 0x1000
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#define SSC_IEN_RX_FIFO_HALF_FULL 0x4000
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/* SSC Status */
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#define SSC_STA 0x14
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#define SSC_STA_RIR 0x1
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#define SSC_STA_TIR 0x2
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#define SSC_STA_TE 0x4
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#define SSC_STA_RE 0x8
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#define SSC_STA_PE 0x10
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#define SSC_STA_CLST 0x20
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#define SSC_STA_AAS 0x40
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#define SSC_STA_STOP 0x80
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#define SSC_STA_ARBL 0x100
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#define SSC_STA_BUSY 0x200
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#define SSC_STA_NACK 0x400
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#define SSC_STA_REPSTRT 0x800
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#define SSC_STA_TX_FIFO_HALF 0x1000
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#define SSC_STA_TX_FIFO_FULL 0x2000
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#define SSC_STA_RX_FIFO_HALF 0x4000
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/*SSC I2C Control */
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#define SSC_I2C 0x18
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#define SSC_I2C_I2CM 0x1
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#define SSC_I2C_STRTG 0x2
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#define SSC_I2C_STOPG 0x4
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#define SSC_I2C_ACKG 0x8
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#define SSC_I2C_AD10 0x10
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#define SSC_I2C_TXENB 0x20
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#define SSC_I2C_REPSTRTG 0x800
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#define SSC_I2C_I2CFSMODE 0x1000
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/* SSC Slave Address */
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#define SSC_SLAD 0x1C
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/* SSC I2C bus repeated start hold time */
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#define SSC_REP_START_HOLD 0x20
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/* SSC I2C bus start hold time */
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#define SSC_START_HOLD 0x24
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/* SSC I2C bus repeated start setup time */
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#define SSC_REP_START_SETUP 0x28
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/* SSC I2C bus repeated stop setup time */
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#define SSC_DATA_SETUP 0x2C
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/* SSC I2C bus stop setup time */
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#define SSC_STOP_SETUP 0x30
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/* SSC I2C bus free time */
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#define SSC_BUS_FREE 0x34
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/* SSC Tx FIFO Status */
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#define SSC_TX_FSTAT 0x38
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#define SSC_TX_FSTAT_STATUS 0x07
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/* SSC Rx FIFO Status */
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#define SSC_RX_FSTAT 0x3C
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#define SSC_RX_FSTAT_STATUS 0x07
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/* SSC Prescaler value value for clock */
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#define SSC_PRE_SCALER_BRG 0x40
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/* SSC Clear bit operation */
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#define SSC_CLR 0x80
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#define SSC_CLR_SSCAAS 0x40
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#define SSC_CLR_SSCSTOP 0x80
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#define SSC_CLR_SSCARBL 0x100
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#define SSC_CLR_NACK 0x400
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#define SSC_CLR_REPSTRT 0x800
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/* SSC Noise suppression Width */
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#define SSC_NOISE_SUPP_WIDTH 0x100
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/* SSC Clock Prescaler */
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#define SSC_PRSCALER 0x104
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#define SSC_PRSC_VALUE 0x0f
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/* SSC Noise suppression Width dataout */
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#define SSC_NOISE_SUPP_WIDTH_DATAOUT 0x108
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/* SSC Prescaler for delay in dataout */
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#define SSC_PRSCALER_DATAOUT 0x10c
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#define SSC_TXFIFO_SIZE 0x8
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#define SSC_RXFIFO_SIZE 0x8
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/* Use the following macros to access SSC I/O memory */
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#define ssc_store32(ssc, offset, value) iowrite32(value, ssc->base+offset)
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#define ssc_store16(ssc, offset, value) iowrite16(value, ssc->base+offset)
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#define ssc_store8(ssc, offset, value) iowrite8(value, ssc->base+offset)
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#define ssc_load32(ssc, offset) ioread32(ssc->base+offset)
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#define ssc_load16(ssc, offset) ioread16(ssc->base+offset)
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#define ssc_load8(ssc, offset) XSioread8(ssc->base+offset)
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#endif /* STM_SSC_H */
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