174 lines
5.3 KiB
C
174 lines
5.3 KiB
C
/* spi_k64_priv.h - Freescale K64 SPI driver private definitions */
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/*
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* Copyright (c) 2015-2016 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __SPI_K64_PRIV_H__
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#define __SPI_K64_PRIV_H__
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typedef void (*spi_k64_config_t)(void);
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struct spi_k64_config {
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uint32_t regs; /* base address of SPI module registers */
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uint32_t clk_gate_reg; /* SPI module's clock gate register addr. */
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uint32_t clk_gate_bit; /* SPI module's clock gate bit position */
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uint32_t irq; /* SPI module IRQ number */
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spi_k64_config_t config_func; /* IRQ configuration function pointer */
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};
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struct spi_k64_data {
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uint8_t frame_sz; /* frame/word size, in bits */
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uint8_t cont_pcs_sel; /* continuous slave/PCS selection enable */
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uint8_t pcs; /* slave/PCS selection */
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const uint8_t *tx_buf;
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uint32_t tx_buf_len;
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uint8_t *rx_buf;
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uint32_t rx_buf_len;
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uint32_t xfer_len;
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device_sync_call_t sync_info; /* sync call information */
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uint8_t error; /* error condition */
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};
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/* Data transfer signal timing delays */
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enum spi_k64_delay_id {
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DELAY_PCS_TO_SCK,
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DELAY_AFTER_SCK,
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DELAY_AFTER_XFER
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};
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/* Register offsets */
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#define SPI_K64_REG_MCR (0x00)
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#define SPI_K64_REG_TCR (0x08)
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#define SPI_K64_REG_CTAR0 (0x0C)
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#define SPI_K64_REG_CTAR1 (0x10)
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#define SPI_K64_REG_SR (0x2C)
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#define SPI_K64_REG_RSER (0x30)
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#define SPI_K64_REG_PUSHR (0x34)
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#define SPI_K64_REG_POPR (0x38)
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#define SPI_K64_REG_TXFR0 (0x3C)
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#define SPI_K64_REG_RXFR0 (0x7C)
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/* Module Control Register (MCR) settings */
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#define SPI_K64_MCR_HALT (0x1)
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#define SPI_K64_MCR_HALT_BIT (0)
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#define SPI_K64_MCR_SMPL_PT_MSK (0x3 << 8)
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#define SPI_K64_MCR_CLR_RXF (0x1 << 10)
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#define SPI_K64_MCR_CLR_TXF (0x1 << 11)
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#define SPI_K64_MCR_DIS_RXF (0x1 << 12)
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#define SPI_K64_MCR_DIS_TXF (0x1 << 13)
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#define SPI_K64_MCR_MDIS (0x1 << 14)
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#define SPI_K64_MCR_MDIS_BIT (14)
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#define SPI_K64_MCR_DOZE (0x1 << 15)
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#define SPI_K64_MCR_PCSIS_MSK (0x3F << 16)
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#define SPI_K64_MCR_PCSIS_SET(pcsis) ((pcsis) << 16)
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#define SPI_K64_MCR_ROOE (0x1 << 24)
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#define SPI_K64_MCR_PCSSE (0x1 << 25)
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#define SPI_K64_MCR_MTFE (0x1 << 26)
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#define SPI_K64_MCR_FRZ (0x1 << 27)
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#define SPI_K64_MCR_DCONF_MSK (0x3 << 28)
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#define SPI_K64_MCR_CONT_SCKE (0x1 << 30)
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#define SPI_K64_MCR_CONT_SCKE_SET(cont) ((cont) << 30)
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#define SPI_K64_MCR_MSTR (0x1 << 31)
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/* Clock and Transfer Attributes Register (CTAR) settings */
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#define SPI_K64_CTAR_BR_MSK (0xF)
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#define SPI_K64_CTAR_DT_MSK (0xF << 4)
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#define SPI_K64_CTAR_DT_SET(dt) ((dt) << 4)
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#define SPI_K64_CTAR_ASC_MSK (0xF << 8)
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#define SPI_K64_CTAR_ASC_SET(asc) ((asc) << 8)
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#define SPI_K64_CTAR_CSSCK_MSK (0xF << 12)
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#define SPI_K64_CTAR_CSSCK_SET(cssck) ((cssck) << 12)
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#define SPI_K64_CTAR_PBR_MSK (0x3 << 16)
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#define SPI_K64_CTAR_PBR_SET(pbr) ((pbr) << 16)
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#define SPI_K64_CTAR_PDT_MSK (0xF << 18)
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#define SPI_K64_CTAR_PDT_SET(pdt) ((pdt) << 18)
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#define SPI_K64_CTAR_PASC_MSK (0xF << 20)
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#define SPI_K64_CTAR_PASC_SET(pasc) ((pasc) << 20)
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#define SPI_K64_CTAR_PCSSCK_MSK (0xF << 22)
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#define SPI_K64_CTAR_PCSSCK_SET(pcssck) ((pcssck) << 22)
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#define SPI_K64_CTAR_LSBFE (0x1 << 24)
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#define SPI_K64_CTAR_CPHA (0x1 << 25)
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#define SPI_K64_CTAR_CPOL (0x1 << 26)
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#define SPI_K64_CTAR_FRMSZ_MSK (0xF << 27)
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#define SPI_K64_CTAR_FRMSZ_SET(sz) ((sz) << 27)
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#define SPI_K64_CTAR_DBR (0x1 << 31)
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#define SPI_K64_CTAR_DBR_SET(dbr) ((dbr) << 31)
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/* Status Register (SR) settings */
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#define SPI_K64_SR_POPNXTPTR_MSK (0xF)
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#define SPI_K64_SR_RXCTR_MSK (0xF << 4)
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#define SPI_K64_SR_TXNXTPTR_MSK (0xF << 8)
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#define SPI_K64_SR_TXCTR_MSK (0xF << 12)
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#define SPI_K64_SR_RFDF (0x1 << 17)
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#define SPI_K64_SR_RFOF (0x1 << 19)
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#define SPI_K64_SR_TFFF (0x1 << 25)
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#define SPI_K64_SR_TFUF (0x1 << 27)
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#define SPI_K64_SR_EOQF (0x1 << 28)
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#define SPI_K64_SR_TXRXS (0x1 << 30)
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#define SPI_K64_SR_TCF (0x1 << 31)
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/* DMA/Interrupt Request Select and Enable Register (RSER) settings */
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#define SPI_K64_RSER_RFDF_DIRS (0x1 << 16)
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#define SPI_K64_RSER_RFDF_RE (0x1 << 17)
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#define SPI_K64_RSER_RFOF_RE (0x1 << 19)
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#define SPI_K64_RSER_TFFF_DIRS (0x1 << 24)
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#define SPI_K64_RSER_TFFF_RE (0x1 << 25)
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#define SPI_K64_RSER_TFUF_RE (0x1 << 27)
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#define SPI_K64_RSER_EOQF_RE (0x1 << 28)
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#define SPI_K64_RSER_TCF_RE (0x1 << 31)
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/* Push Tx FIFO Register (PUSHR) settings */
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#define SPI_K64_PUSHR_TXDATA_MSK (0xFF)
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#define SPI_K64_PUSHR_PCS_MSK (0x3F << 16)
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#define SPI_K64_PUSHR_PCS_SET(pcs) ((pcs) << 16)
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#define SPI_K64_PUSHR_CTCNT (0x1 << 26)
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#define SPI_K64_PUSHR_EOQ (0x1 << 27)
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#define SPI_K64_PUSHR_CTAS_MSK (0x7 << 28)
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#define SPI_K64_PUSHR_CONT (0x1 << 31)
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#define SPI_K64_PUSHR_CONT_SET(cont) ((cont) << 31)
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/* Tx FIFO Register (TXFR) settings */
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#define SPI_K64_TXFR_TXDATA_MSK (0xFFFF)
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#define SPI_K64_TXFR_TXCMD_MSK (0xFFFF << 16)
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#endif /* __SPI_K64_PRIV_H__ */
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