334 lines
9.7 KiB
C
334 lines
9.7 KiB
C
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#ifndef __INCLUDE_ATMEL_SSC_H
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#define __INCLUDE_ATMEL_SSC_H
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#include <linux/platform_device.h>
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#include <linux/list.h>
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#include <linux/io.h>
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struct atmel_ssc_platform_data {
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int use_dma;
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int has_fslen_ext;
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};
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struct ssc_device {
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struct list_head list;
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dma_addr_t phybase;
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void __iomem *regs;
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struct platform_device *pdev;
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struct atmel_ssc_platform_data *pdata;
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struct clk *clk;
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int user;
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int irq;
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bool clk_from_rk_pin;
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};
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struct ssc_device * __must_check ssc_request(unsigned int ssc_num);
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void ssc_free(struct ssc_device *ssc);
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/* SSC register offsets */
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/* SSC Control Register */
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#define SSC_CR 0x00000000
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#define SSC_CR_RXDIS_SIZE 1
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#define SSC_CR_RXDIS_OFFSET 1
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#define SSC_CR_RXEN_SIZE 1
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#define SSC_CR_RXEN_OFFSET 0
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#define SSC_CR_SWRST_SIZE 1
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#define SSC_CR_SWRST_OFFSET 15
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#define SSC_CR_TXDIS_SIZE 1
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#define SSC_CR_TXDIS_OFFSET 9
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#define SSC_CR_TXEN_SIZE 1
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#define SSC_CR_TXEN_OFFSET 8
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/* SSC Clock Mode Register */
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#define SSC_CMR 0x00000004
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#define SSC_CMR_DIV_SIZE 12
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#define SSC_CMR_DIV_OFFSET 0
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/* SSC Receive Clock Mode Register */
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#define SSC_RCMR 0x00000010
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#define SSC_RCMR_CKG_SIZE 2
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#define SSC_RCMR_CKG_OFFSET 6
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#define SSC_RCMR_CKI_SIZE 1
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#define SSC_RCMR_CKI_OFFSET 5
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#define SSC_RCMR_CKO_SIZE 3
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#define SSC_RCMR_CKO_OFFSET 2
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#define SSC_RCMR_CKS_SIZE 2
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#define SSC_RCMR_CKS_OFFSET 0
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#define SSC_RCMR_PERIOD_SIZE 8
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#define SSC_RCMR_PERIOD_OFFSET 24
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#define SSC_RCMR_START_SIZE 4
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#define SSC_RCMR_START_OFFSET 8
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#define SSC_RCMR_STOP_SIZE 1
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#define SSC_RCMR_STOP_OFFSET 12
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#define SSC_RCMR_STTDLY_SIZE 8
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#define SSC_RCMR_STTDLY_OFFSET 16
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/* SSC Receive Frame Mode Register */
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#define SSC_RFMR 0x00000014
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#define SSC_RFMR_DATLEN_SIZE 5
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#define SSC_RFMR_DATLEN_OFFSET 0
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#define SSC_RFMR_DATNB_SIZE 4
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#define SSC_RFMR_DATNB_OFFSET 8
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#define SSC_RFMR_FSEDGE_SIZE 1
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#define SSC_RFMR_FSEDGE_OFFSET 24
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/*
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* The FSLEN_EXT exist on at91sam9rl, at91sam9g10,
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* at91sam9g20, and at91sam9g45 and newer SoCs
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*/
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#define SSC_RFMR_FSLEN_EXT_SIZE 4
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#define SSC_RFMR_FSLEN_EXT_OFFSET 28
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#define SSC_RFMR_FSLEN_SIZE 4
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#define SSC_RFMR_FSLEN_OFFSET 16
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#define SSC_RFMR_FSOS_SIZE 4
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#define SSC_RFMR_FSOS_OFFSET 20
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#define SSC_RFMR_LOOP_SIZE 1
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#define SSC_RFMR_LOOP_OFFSET 5
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#define SSC_RFMR_MSBF_SIZE 1
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#define SSC_RFMR_MSBF_OFFSET 7
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/* SSC Transmit Clock Mode Register */
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#define SSC_TCMR 0x00000018
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#define SSC_TCMR_CKG_SIZE 2
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#define SSC_TCMR_CKG_OFFSET 6
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#define SSC_TCMR_CKI_SIZE 1
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#define SSC_TCMR_CKI_OFFSET 5
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#define SSC_TCMR_CKO_SIZE 3
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#define SSC_TCMR_CKO_OFFSET 2
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#define SSC_TCMR_CKS_SIZE 2
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#define SSC_TCMR_CKS_OFFSET 0
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#define SSC_TCMR_PERIOD_SIZE 8
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#define SSC_TCMR_PERIOD_OFFSET 24
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#define SSC_TCMR_START_SIZE 4
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#define SSC_TCMR_START_OFFSET 8
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#define SSC_TCMR_STTDLY_SIZE 8
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#define SSC_TCMR_STTDLY_OFFSET 16
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/* SSC Transmit Frame Mode Register */
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#define SSC_TFMR 0x0000001c
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#define SSC_TFMR_DATDEF_SIZE 1
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#define SSC_TFMR_DATDEF_OFFSET 5
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#define SSC_TFMR_DATLEN_SIZE 5
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#define SSC_TFMR_DATLEN_OFFSET 0
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#define SSC_TFMR_DATNB_SIZE 4
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#define SSC_TFMR_DATNB_OFFSET 8
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#define SSC_TFMR_FSDEN_SIZE 1
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#define SSC_TFMR_FSDEN_OFFSET 23
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#define SSC_TFMR_FSEDGE_SIZE 1
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#define SSC_TFMR_FSEDGE_OFFSET 24
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/*
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* The FSLEN_EXT exist on at91sam9rl, at91sam9g10,
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* at91sam9g20, and at91sam9g45 and newer SoCs
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*/
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#define SSC_TFMR_FSLEN_EXT_SIZE 4
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#define SSC_TFMR_FSLEN_EXT_OFFSET 28
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#define SSC_TFMR_FSLEN_SIZE 4
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#define SSC_TFMR_FSLEN_OFFSET 16
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#define SSC_TFMR_FSOS_SIZE 3
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#define SSC_TFMR_FSOS_OFFSET 20
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#define SSC_TFMR_MSBF_SIZE 1
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#define SSC_TFMR_MSBF_OFFSET 7
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/* SSC Receive Hold Register */
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#define SSC_RHR 0x00000020
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#define SSC_RHR_RDAT_SIZE 32
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#define SSC_RHR_RDAT_OFFSET 0
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/* SSC Transmit Hold Register */
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#define SSC_THR 0x00000024
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#define SSC_THR_TDAT_SIZE 32
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#define SSC_THR_TDAT_OFFSET 0
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/* SSC Receive Sync. Holding Register */
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#define SSC_RSHR 0x00000030
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#define SSC_RSHR_RSDAT_SIZE 16
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#define SSC_RSHR_RSDAT_OFFSET 0
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/* SSC Transmit Sync. Holding Register */
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#define SSC_TSHR 0x00000034
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#define SSC_TSHR_TSDAT_SIZE 16
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#define SSC_TSHR_RSDAT_OFFSET 0
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/* SSC Receive Compare 0 Register */
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#define SSC_RC0R 0x00000038
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#define SSC_RC0R_CP0_SIZE 16
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#define SSC_RC0R_CP0_OFFSET 0
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/* SSC Receive Compare 1 Register */
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#define SSC_RC1R 0x0000003c
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#define SSC_RC1R_CP1_SIZE 16
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#define SSC_RC1R_CP1_OFFSET 0
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/* SSC Status Register */
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#define SSC_SR 0x00000040
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#define SSC_SR_CP0_SIZE 1
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#define SSC_SR_CP0_OFFSET 8
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#define SSC_SR_CP1_SIZE 1
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#define SSC_SR_CP1_OFFSET 9
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#define SSC_SR_ENDRX_SIZE 1
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#define SSC_SR_ENDRX_OFFSET 6
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#define SSC_SR_ENDTX_SIZE 1
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#define SSC_SR_ENDTX_OFFSET 2
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#define SSC_SR_OVRUN_SIZE 1
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#define SSC_SR_OVRUN_OFFSET 5
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#define SSC_SR_RXBUFF_SIZE 1
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#define SSC_SR_RXBUFF_OFFSET 7
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#define SSC_SR_RXEN_SIZE 1
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#define SSC_SR_RXEN_OFFSET 17
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#define SSC_SR_RXRDY_SIZE 1
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#define SSC_SR_RXRDY_OFFSET 4
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#define SSC_SR_RXSYN_SIZE 1
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#define SSC_SR_RXSYN_OFFSET 11
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#define SSC_SR_TXBUFE_SIZE 1
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#define SSC_SR_TXBUFE_OFFSET 3
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#define SSC_SR_TXEMPTY_SIZE 1
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#define SSC_SR_TXEMPTY_OFFSET 1
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#define SSC_SR_TXEN_SIZE 1
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#define SSC_SR_TXEN_OFFSET 16
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#define SSC_SR_TXRDY_SIZE 1
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#define SSC_SR_TXRDY_OFFSET 0
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#define SSC_SR_TXSYN_SIZE 1
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#define SSC_SR_TXSYN_OFFSET 10
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/* SSC Interrupt Enable Register */
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#define SSC_IER 0x00000044
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#define SSC_IER_CP0_SIZE 1
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#define SSC_IER_CP0_OFFSET 8
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#define SSC_IER_CP1_SIZE 1
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#define SSC_IER_CP1_OFFSET 9
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#define SSC_IER_ENDRX_SIZE 1
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#define SSC_IER_ENDRX_OFFSET 6
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#define SSC_IER_ENDTX_SIZE 1
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#define SSC_IER_ENDTX_OFFSET 2
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#define SSC_IER_OVRUN_SIZE 1
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#define SSC_IER_OVRUN_OFFSET 5
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#define SSC_IER_RXBUFF_SIZE 1
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#define SSC_IER_RXBUFF_OFFSET 7
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#define SSC_IER_RXRDY_SIZE 1
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#define SSC_IER_RXRDY_OFFSET 4
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#define SSC_IER_RXSYN_SIZE 1
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#define SSC_IER_RXSYN_OFFSET 11
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#define SSC_IER_TXBUFE_SIZE 1
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#define SSC_IER_TXBUFE_OFFSET 3
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#define SSC_IER_TXEMPTY_SIZE 1
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#define SSC_IER_TXEMPTY_OFFSET 1
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#define SSC_IER_TXRDY_SIZE 1
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#define SSC_IER_TXRDY_OFFSET 0
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#define SSC_IER_TXSYN_SIZE 1
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#define SSC_IER_TXSYN_OFFSET 10
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/* SSC Interrupt Disable Register */
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#define SSC_IDR 0x00000048
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#define SSC_IDR_CP0_SIZE 1
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#define SSC_IDR_CP0_OFFSET 8
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#define SSC_IDR_CP1_SIZE 1
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#define SSC_IDR_CP1_OFFSET 9
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#define SSC_IDR_ENDRX_SIZE 1
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#define SSC_IDR_ENDRX_OFFSET 6
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#define SSC_IDR_ENDTX_SIZE 1
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#define SSC_IDR_ENDTX_OFFSET 2
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#define SSC_IDR_OVRUN_SIZE 1
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#define SSC_IDR_OVRUN_OFFSET 5
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#define SSC_IDR_RXBUFF_SIZE 1
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#define SSC_IDR_RXBUFF_OFFSET 7
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#define SSC_IDR_RXRDY_SIZE 1
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#define SSC_IDR_RXRDY_OFFSET 4
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#define SSC_IDR_RXSYN_SIZE 1
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#define SSC_IDR_RXSYN_OFFSET 11
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#define SSC_IDR_TXBUFE_SIZE 1
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#define SSC_IDR_TXBUFE_OFFSET 3
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#define SSC_IDR_TXEMPTY_SIZE 1
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#define SSC_IDR_TXEMPTY_OFFSET 1
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#define SSC_IDR_TXRDY_SIZE 1
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#define SSC_IDR_TXRDY_OFFSET 0
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#define SSC_IDR_TXSYN_SIZE 1
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#define SSC_IDR_TXSYN_OFFSET 10
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/* SSC Interrupt Mask Register */
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#define SSC_IMR 0x0000004c
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#define SSC_IMR_CP0_SIZE 1
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#define SSC_IMR_CP0_OFFSET 8
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#define SSC_IMR_CP1_SIZE 1
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#define SSC_IMR_CP1_OFFSET 9
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#define SSC_IMR_ENDRX_SIZE 1
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#define SSC_IMR_ENDRX_OFFSET 6
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#define SSC_IMR_ENDTX_SIZE 1
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#define SSC_IMR_ENDTX_OFFSET 2
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#define SSC_IMR_OVRUN_SIZE 1
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#define SSC_IMR_OVRUN_OFFSET 5
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#define SSC_IMR_RXBUFF_SIZE 1
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#define SSC_IMR_RXBUFF_OFFSET 7
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#define SSC_IMR_RXRDY_SIZE 1
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#define SSC_IMR_RXRDY_OFFSET 4
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#define SSC_IMR_RXSYN_SIZE 1
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#define SSC_IMR_RXSYN_OFFSET 11
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#define SSC_IMR_TXBUFE_SIZE 1
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#define SSC_IMR_TXBUFE_OFFSET 3
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#define SSC_IMR_TXEMPTY_SIZE 1
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#define SSC_IMR_TXEMPTY_OFFSET 1
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#define SSC_IMR_TXRDY_SIZE 1
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#define SSC_IMR_TXRDY_OFFSET 0
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#define SSC_IMR_TXSYN_SIZE 1
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#define SSC_IMR_TXSYN_OFFSET 10
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/* SSC PDC Receive Pointer Register */
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#define SSC_PDC_RPR 0x00000100
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/* SSC PDC Receive Counter Register */
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#define SSC_PDC_RCR 0x00000104
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/* SSC PDC Transmit Pointer Register */
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#define SSC_PDC_TPR 0x00000108
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/* SSC PDC Receive Next Pointer Register */
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#define SSC_PDC_RNPR 0x00000110
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/* SSC PDC Receive Next Counter Register */
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#define SSC_PDC_RNCR 0x00000114
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/* SSC PDC Transmit Counter Register */
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#define SSC_PDC_TCR 0x0000010c
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/* SSC PDC Transmit Next Pointer Register */
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#define SSC_PDC_TNPR 0x00000118
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/* SSC PDC Transmit Next Counter Register */
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#define SSC_PDC_TNCR 0x0000011c
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/* SSC PDC Transfer Control Register */
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#define SSC_PDC_PTCR 0x00000120
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#define SSC_PDC_PTCR_RXTDIS_SIZE 1
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#define SSC_PDC_PTCR_RXTDIS_OFFSET 1
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#define SSC_PDC_PTCR_RXTEN_SIZE 1
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#define SSC_PDC_PTCR_RXTEN_OFFSET 0
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#define SSC_PDC_PTCR_TXTDIS_SIZE 1
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#define SSC_PDC_PTCR_TXTDIS_OFFSET 9
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#define SSC_PDC_PTCR_TXTEN_SIZE 1
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#define SSC_PDC_PTCR_TXTEN_OFFSET 8
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/* SSC PDC Transfer Status Register */
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#define SSC_PDC_PTSR 0x00000124
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#define SSC_PDC_PTSR_RXTEN_SIZE 1
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#define SSC_PDC_PTSR_RXTEN_OFFSET 0
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#define SSC_PDC_PTSR_TXTEN_SIZE 1
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#define SSC_PDC_PTSR_TXTEN_OFFSET 8
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/* Bit manipulation macros */
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#define SSC_BIT(name) \
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(1 << SSC_##name##_OFFSET)
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#define SSC_BF(name, value) \
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(((value) & ((1 << SSC_##name##_SIZE) - 1)) \
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<< SSC_##name##_OFFSET)
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#define SSC_BFEXT(name, value) \
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(((value) >> SSC_##name##_OFFSET) \
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& ((1 << SSC_##name##_SIZE) - 1))
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#define SSC_BFINS(name, value, old) \
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(((old) & ~(((1 << SSC_##name##_SIZE) - 1) \
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<< SSC_##name##_OFFSET)) | SSC_BF(name, value))
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/* Register access macros */
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#define ssc_readl(base, reg) __raw_readl(base + SSC_##reg)
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#define ssc_writel(base, reg, value) __raw_writel((value), base + SSC_##reg)
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#endif /* __INCLUDE_ATMEL_SSC_H */
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