diff options
Diffstat (limited to 'include/linux/atmel-ssc.h')
| -rw-r--r-- | include/linux/atmel-ssc.h | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/include/linux/atmel-ssc.h b/include/linux/atmel-ssc.h new file mode 100644 index 000000000..7c0f65498 --- /dev/null +++ b/include/linux/atmel-ssc.h @@ -0,0 +1,333 @@ +#ifndef __INCLUDE_ATMEL_SSC_H +#define __INCLUDE_ATMEL_SSC_H + +#include <linux/platform_device.h> +#include <linux/list.h> +#include <linux/io.h> + +struct atmel_ssc_platform_data { + int use_dma; + int has_fslen_ext; +}; + +struct ssc_device { + struct list_head list; + dma_addr_t phybase; + void __iomem *regs; + struct platform_device *pdev; + struct atmel_ssc_platform_data *pdata; + struct clk *clk; + int user; + int irq; + bool clk_from_rk_pin; +}; + +struct ssc_device * __must_check ssc_request(unsigned int ssc_num); +void ssc_free(struct ssc_device *ssc); + +/* SSC register offsets */ + +/* SSC Control Register */ +#define SSC_CR 0x00000000 +#define SSC_CR_RXDIS_SIZE 1 +#define SSC_CR_RXDIS_OFFSET 1 +#define SSC_CR_RXEN_SIZE 1 +#define SSC_CR_RXEN_OFFSET 0 +#define SSC_CR_SWRST_SIZE 1 +#define SSC_CR_SWRST_OFFSET 15 +#define SSC_CR_TXDIS_SIZE 1 +#define SSC_CR_TXDIS_OFFSET 9 +#define SSC_CR_TXEN_SIZE 1 +#define SSC_CR_TXEN_OFFSET 8 + +/* SSC Clock Mode Register */ +#define SSC_CMR 0x00000004 +#define SSC_CMR_DIV_SIZE 12 +#define SSC_CMR_DIV_OFFSET 0 + +/* SSC Receive Clock Mode Register */ +#define SSC_RCMR 0x00000010 +#define SSC_RCMR_CKG_SIZE 2 +#define SSC_RCMR_CKG_OFFSET 6 +#define SSC_RCMR_CKI_SIZE 1 +#define SSC_RCMR_CKI_OFFSET 5 +#define SSC_RCMR_CKO_SIZE 3 +#define SSC_RCMR_CKO_OFFSET 2 +#define SSC_RCMR_CKS_SIZE 2 +#define SSC_RCMR_CKS_OFFSET 0 +#define SSC_RCMR_PERIOD_SIZE 8 +#define SSC_RCMR_PERIOD_OFFSET 24 +#define SSC_RCMR_START_SIZE 4 +#define SSC_RCMR_START_OFFSET 8 +#define SSC_RCMR_STOP_SIZE 1 +#define SSC_RCMR_STOP_OFFSET 12 +#define SSC_RCMR_STTDLY_SIZE 8 +#define SSC_RCMR_STTDLY_OFFSET 16 + +/* SSC Receive Frame Mode Register */ +#define SSC_RFMR 0x00000014 +#define SSC_RFMR_DATLEN_SIZE 5 +#define SSC_RFMR_DATLEN_OFFSET 0 +#define SSC_RFMR_DATNB_SIZE 4 +#define SSC_RFMR_DATNB_OFFSET 8 +#define SSC_RFMR_FSEDGE_SIZE 1 +#define SSC_RFMR_FSEDGE_OFFSET 24 +/* + * The FSLEN_EXT exist on at91sam9rl, at91sam9g10, + * at91sam9g20, and at91sam9g45 and newer SoCs + */ +#define SSC_RFMR_FSLEN_EXT_SIZE 4 +#define SSC_RFMR_FSLEN_EXT_OFFSET 28 +#define SSC_RFMR_FSLEN_SIZE 4 +#define SSC_RFMR_FSLEN_OFFSET 16 +#define SSC_RFMR_FSOS_SIZE 4 +#define SSC_RFMR_FSOS_OFFSET 20 +#define SSC_RFMR_LOOP_SIZE 1 +#define SSC_RFMR_LOOP_OFFSET 5 +#define SSC_RFMR_MSBF_SIZE 1 +#define SSC_RFMR_MSBF_OFFSET 7 + +/* SSC Transmit Clock Mode Register */ +#define SSC_TCMR 0x00000018 +#define SSC_TCMR_CKG_SIZE 2 +#define SSC_TCMR_CKG_OFFSET 6 +#define SSC_TCMR_CKI_SIZE 1 +#define SSC_TCMR_CKI_OFFSET 5 +#define SSC_TCMR_CKO_SIZE 3 +#define SSC_TCMR_CKO_OFFSET 2 +#define SSC_TCMR_CKS_SIZE 2 +#define SSC_TCMR_CKS_OFFSET 0 +#define SSC_TCMR_PERIOD_SIZE 8 +#define SSC_TCMR_PERIOD_OFFSET 24 +#define SSC_TCMR_START_SIZE 4 +#define SSC_TCMR_START_OFFSET 8 +#define SSC_TCMR_STTDLY_SIZE 8 +#define SSC_TCMR_STTDLY_OFFSET 16 + +/* SSC Transmit Frame Mode Register */ +#define SSC_TFMR 0x0000001c +#define SSC_TFMR_DATDEF_SIZE 1 +#define SSC_TFMR_DATDEF_OFFSET 5 +#define SSC_TFMR_DATLEN_SIZE 5 +#define SSC_TFMR_DATLEN_OFFSET 0 +#define SSC_TFMR_DATNB_SIZE 4 +#define SSC_TFMR_DATNB_OFFSET 8 +#define SSC_TFMR_FSDEN_SIZE 1 +#define SSC_TFMR_FSDEN_OFFSET 23 +#define SSC_TFMR_FSEDGE_SIZE 1 +#define SSC_TFMR_FSEDGE_OFFSET 24 +/* + * The FSLEN_EXT exist on at91sam9rl, at91sam9g10, + * at91sam9g20, and at91sam9g45 and newer SoCs + */ +#define SSC_TFMR_FSLEN_EXT_SIZE 4 +#define SSC_TFMR_FSLEN_EXT_OFFSET 28 +#define SSC_TFMR_FSLEN_SIZE 4 +#define SSC_TFMR_FSLEN_OFFSET 16 +#define SSC_TFMR_FSOS_SIZE 3 +#define SSC_TFMR_FSOS_OFFSET 20 +#define SSC_TFMR_MSBF_SIZE 1 +#define SSC_TFMR_MSBF_OFFSET 7 + +/* SSC Receive Hold Register */ +#define SSC_RHR 0x00000020 +#define SSC_RHR_RDAT_SIZE 32 +#define SSC_RHR_RDAT_OFFSET 0 + +/* SSC Transmit Hold Register */ +#define SSC_THR 0x00000024 +#define SSC_THR_TDAT_SIZE 32 +#define SSC_THR_TDAT_OFFSET 0 + +/* SSC Receive Sync. Holding Register */ +#define SSC_RSHR 0x00000030 +#define SSC_RSHR_RSDAT_SIZE 16 +#define SSC_RSHR_RSDAT_OFFSET 0 + +/* SSC Transmit Sync. Holding Register */ +#define SSC_TSHR 0x00000034 +#define SSC_TSHR_TSDAT_SIZE 16 +#define SSC_TSHR_RSDAT_OFFSET 0 + +/* SSC Receive Compare 0 Register */ +#define SSC_RC0R 0x00000038 +#define SSC_RC0R_CP0_SIZE 16 +#define SSC_RC0R_CP0_OFFSET 0 + +/* SSC Receive Compare 1 Register */ +#define SSC_RC1R 0x0000003c +#define SSC_RC1R_CP1_SIZE 16 +#define SSC_RC1R_CP1_OFFSET 0 + +/* SSC Status Register */ +#define SSC_SR 0x00000040 +#define SSC_SR_CP0_SIZE 1 +#define SSC_SR_CP0_OFFSET 8 +#define SSC_SR_CP1_SIZE 1 +#define SSC_SR_CP1_OFFSET 9 +#define SSC_SR_ENDRX_SIZE 1 +#define SSC_SR_ENDRX_OFFSET 6 +#define SSC_SR_ENDTX_SIZE 1 +#define SSC_SR_ENDTX_OFFSET 2 +#define SSC_SR_OVRUN_SIZE 1 +#define SSC_SR_OVRUN_OFFSET 5 +#define SSC_SR_RXBUFF_SIZE 1 +#define SSC_SR_RXBUFF_OFFSET 7 +#define SSC_SR_RXEN_SIZE 1 +#define SSC_SR_RXEN_OFFSET 17 +#define SSC_SR_RXRDY_SIZE 1 +#define SSC_SR_RXRDY_OFFSET 4 +#define SSC_SR_RXSYN_SIZE 1 +#define SSC_SR_RXSYN_OFFSET 11 +#define SSC_SR_TXBUFE_SIZE 1 +#define SSC_SR_TXBUFE_OFFSET 3 +#define SSC_SR_TXEMPTY_SIZE 1 +#define SSC_SR_TXEMPTY_OFFSET 1 +#define SSC_SR_TXEN_SIZE 1 +#define SSC_SR_TXEN_OFFSET 16 +#define SSC_SR_TXRDY_SIZE 1 +#define SSC_SR_TXRDY_OFFSET 0 +#define SSC_SR_TXSYN_SIZE 1 +#define SSC_SR_TXSYN_OFFSET 10 + +/* SSC Interrupt Enable Register */ +#define SSC_IER 0x00000044 +#define SSC_IER_CP0_SIZE 1 +#define SSC_IER_CP0_OFFSET 8 +#define SSC_IER_CP1_SIZE 1 +#define SSC_IER_CP1_OFFSET 9 +#define SSC_IER_ENDRX_SIZE 1 +#define SSC_IER_ENDRX_OFFSET 6 +#define SSC_IER_ENDTX_SIZE 1 +#define SSC_IER_ENDTX_OFFSET 2 +#define SSC_IER_OVRUN_SIZE 1 +#define SSC_IER_OVRUN_OFFSET 5 +#define SSC_IER_RXBUFF_SIZE 1 +#define SSC_IER_RXBUFF_OFFSET 7 +#define SSC_IER_RXRDY_SIZE 1 +#define SSC_IER_RXRDY_OFFSET 4 +#define SSC_IER_RXSYN_SIZE 1 +#define SSC_IER_RXSYN_OFFSET 11 +#define SSC_IER_TXBUFE_SIZE 1 +#define SSC_IER_TXBUFE_OFFSET 3 +#define SSC_IER_TXEMPTY_SIZE 1 +#define SSC_IER_TXEMPTY_OFFSET 1 +#define SSC_IER_TXRDY_SIZE 1 +#define SSC_IER_TXRDY_OFFSET 0 +#define SSC_IER_TXSYN_SIZE 1 +#define SSC_IER_TXSYN_OFFSET 10 + +/* SSC Interrupt Disable Register */ +#define SSC_IDR 0x00000048 +#define SSC_IDR_CP0_SIZE 1 +#define SSC_IDR_CP0_OFFSET 8 +#define SSC_IDR_CP1_SIZE 1 +#define SSC_IDR_CP1_OFFSET 9 +#define SSC_IDR_ENDRX_SIZE 1 +#define SSC_IDR_ENDRX_OFFSET 6 +#define SSC_IDR_ENDTX_SIZE 1 +#define SSC_IDR_ENDTX_OFFSET 2 +#define SSC_IDR_OVRUN_SIZE 1 +#define SSC_IDR_OVRUN_OFFSET 5 +#define SSC_IDR_RXBUFF_SIZE 1 +#define SSC_IDR_RXBUFF_OFFSET 7 +#define SSC_IDR_RXRDY_SIZE 1 +#define SSC_IDR_RXRDY_OFFSET 4 +#define SSC_IDR_RXSYN_SIZE 1 +#define SSC_IDR_RXSYN_OFFSET 11 +#define SSC_IDR_TXBUFE_SIZE 1 +#define SSC_IDR_TXBUFE_OFFSET 3 +#define SSC_IDR_TXEMPTY_SIZE 1 +#define SSC_IDR_TXEMPTY_OFFSET 1 +#define SSC_IDR_TXRDY_SIZE 1 +#define SSC_IDR_TXRDY_OFFSET 0 +#define SSC_IDR_TXSYN_SIZE 1 +#define SSC_IDR_TXSYN_OFFSET 10 + +/* SSC Interrupt Mask Register */ +#define SSC_IMR 0x0000004c +#define SSC_IMR_CP0_SIZE 1 +#define SSC_IMR_CP0_OFFSET 8 +#define SSC_IMR_CP1_SIZE 1 +#define SSC_IMR_CP1_OFFSET 9 +#define SSC_IMR_ENDRX_SIZE 1 +#define SSC_IMR_ENDRX_OFFSET 6 +#define SSC_IMR_ENDTX_SIZE 1 +#define SSC_IMR_ENDTX_OFFSET 2 +#define SSC_IMR_OVRUN_SIZE 1 +#define SSC_IMR_OVRUN_OFFSET 5 +#define SSC_IMR_RXBUFF_SIZE 1 +#define SSC_IMR_RXBUFF_OFFSET 7 +#define SSC_IMR_RXRDY_SIZE 1 +#define SSC_IMR_RXRDY_OFFSET 4 +#define SSC_IMR_RXSYN_SIZE 1 +#define SSC_IMR_RXSYN_OFFSET 11 +#define SSC_IMR_TXBUFE_SIZE 1 +#define SSC_IMR_TXBUFE_OFFSET 3 +#define SSC_IMR_TXEMPTY_SIZE 1 +#define SSC_IMR_TXEMPTY_OFFSET 1 +#define SSC_IMR_TXRDY_SIZE 1 +#define SSC_IMR_TXRDY_OFFSET 0 +#define SSC_IMR_TXSYN_SIZE 1 +#define SSC_IMR_TXSYN_OFFSET 10 + +/* SSC PDC Receive Pointer Register */ +#define SSC_PDC_RPR 0x00000100 + +/* SSC PDC Receive Counter Register */ +#define SSC_PDC_RCR 0x00000104 + +/* SSC PDC Transmit Pointer Register */ +#define SSC_PDC_TPR 0x00000108 + +/* SSC PDC Receive Next Pointer Register */ +#define SSC_PDC_RNPR 0x00000110 + +/* SSC PDC Receive Next Counter Register */ +#define SSC_PDC_RNCR 0x00000114 + +/* SSC PDC Transmit Counter Register */ +#define SSC_PDC_TCR 0x0000010c + +/* SSC PDC Transmit Next Pointer Register */ +#define SSC_PDC_TNPR 0x00000118 + +/* SSC PDC Transmit Next Counter Register */ +#define SSC_PDC_TNCR 0x0000011c + +/* SSC PDC Transfer Control Register */ +#define SSC_PDC_PTCR 0x00000120 +#define SSC_PDC_PTCR_RXTDIS_SIZE 1 +#define SSC_PDC_PTCR_RXTDIS_OFFSET 1 +#define SSC_PDC_PTCR_RXTEN_SIZE 1 +#define SSC_PDC_PTCR_RXTEN_OFFSET 0 +#define SSC_PDC_PTCR_TXTDIS_SIZE 1 +#define SSC_PDC_PTCR_TXTDIS_OFFSET 9 +#define SSC_PDC_PTCR_TXTEN_SIZE 1 +#define SSC_PDC_PTCR_TXTEN_OFFSET 8 + +/* SSC PDC Transfer Status Register */ +#define SSC_PDC_PTSR 0x00000124 +#define SSC_PDC_PTSR_RXTEN_SIZE 1 +#define SSC_PDC_PTSR_RXTEN_OFFSET 0 +#define SSC_PDC_PTSR_TXTEN_SIZE 1 +#define SSC_PDC_PTSR_TXTEN_OFFSET 8 + +/* Bit manipulation macros */ +#define SSC_BIT(name) \ + (1 << SSC_##name##_OFFSET) +#define SSC_BF(name, value) \ + (((value) & ((1 << SSC_##name##_SIZE) - 1)) \ + << SSC_##name##_OFFSET) +#define SSC_BFEXT(name, value) \ + (((value) >> SSC_##name##_OFFSET) \ + & ((1 << SSC_##name##_SIZE) - 1)) +#define SSC_BFINS(name, value, old) \ + (((old) & ~(((1 << SSC_##name##_SIZE) - 1) \ + << SSC_##name##_OFFSET)) | SSC_BF(name, value)) + +/* Register access macros */ +#define ssc_readl(base, reg) __raw_readl(base + SSC_##reg) +#define ssc_writel(base, reg, value) __raw_writel((value), base + SSC_##reg) + +#endif /* __INCLUDE_ATMEL_SSC_H */ |