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kernels
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3.10.0-1062.9.1.el7.x86_64
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include
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linux
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spi
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mxs-spi.h
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/* * include/linux/spi/mxs-spi.h * * Freescale i.MX233/i.MX28 SPI controller register definition * * Copyright 2008 Embedded Alley Solutions, Inc. * Copyright 2009-2011 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef __LINUX_SPI_MXS_SPI_H__ #define __LINUX_SPI_MXS_SPI_H__ #include <linux/dmaengine.h> #define ssp_is_old(host) ((host)->devid == IMX23_SSP) /* SSP registers */ #define HW_SSP_CTRL0 0x000 #define BM_SSP_CTRL0_RUN (1 << 29) #define BM_SSP_CTRL0_SDIO_IRQ_CHECK (1 << 28) #define BM_SSP_CTRL0_LOCK_CS (1 << 27) #define BM_SSP_CTRL0_IGNORE_CRC (1 << 26) #define BM_SSP_CTRL0_READ (1 << 25) #define BM_SSP_CTRL0_DATA_XFER (1 << 24) #define BP_SSP_CTRL0_BUS_WIDTH 22 #define BM_SSP_CTRL0_BUS_WIDTH (0x3 << 22) #define BM_SSP_CTRL0_WAIT_FOR_IRQ (1 << 21) #define BM_SSP_CTRL0_WAIT_FOR_CMD (1 << 20) #define BM_SSP_CTRL0_LONG_RESP (1 << 19) #define BM_SSP_CTRL0_GET_RESP (1 << 17) #define BM_SSP_CTRL0_ENABLE (1 << 16) #define BP_SSP_CTRL0_XFER_COUNT 0 #define BM_SSP_CTRL0_XFER_COUNT 0xffff #define HW_SSP_CMD0 0x010 #define BM_SSP_CMD0_DBL_DATA_RATE_EN (1 << 25) #define BM_SSP_CMD0_SLOW_CLKING_EN (1 << 22) #define BM_SSP_CMD0_CONT_CLKING_EN (1 << 21) #define BM_SSP_CMD0_APPEND_8CYC (1 << 20) #define BP_SSP_CMD0_BLOCK_SIZE 16 #define BM_SSP_CMD0_BLOCK_SIZE (0xf << 16) #define BP_SSP_CMD0_BLOCK_COUNT 8 #define BM_SSP_CMD0_BLOCK_COUNT (0xff << 8) #define BP_SSP_CMD0_CMD 0 #define BM_SSP_CMD0_CMD 0xff #define HW_SSP_CMD1 0x020 #define HW_SSP_XFER_SIZE 0x030 #define HW_SSP_BLOCK_SIZE 0x040 #define BP_SSP_BLOCK_SIZE_BLOCK_COUNT 4 #define BM_SSP_BLOCK_SIZE_BLOCK_COUNT (0xffffff << 4) #define BP_SSP_BLOCK_SIZE_BLOCK_SIZE 0 #define BM_SSP_BLOCK_SIZE_BLOCK_SIZE 0xf #define HW_SSP_TIMING(h) (ssp_is_old(h) ? 0x050 : 0x070) #define BP_SSP_TIMING_TIMEOUT 16 #define BM_SSP_TIMING_TIMEOUT (0xffff << 16) #define BP_SSP_TIMING_CLOCK_DIVIDE 8 #define BM_SSP_TIMING_CLOCK_DIVIDE (0xff << 8) #define BF_SSP_TIMING_CLOCK_DIVIDE(v) \ (((v) << 8) & BM_SSP_TIMING_CLOCK_DIVIDE) #define BP_SSP_TIMING_CLOCK_RATE 0 #define BM_SSP_TIMING_CLOCK_RATE 0xff #define BF_SSP_TIMING_CLOCK_RATE(v) \ (((v) << 0) & BM_SSP_TIMING_CLOCK_RATE) #define HW_SSP_CTRL1(h) (ssp_is_old(h) ? 0x060 : 0x080) #define BM_SSP_CTRL1_SDIO_IRQ (1 << 31) #define BM_SSP_CTRL1_SDIO_IRQ_EN (1 << 30) #define BM_SSP_CTRL1_RESP_ERR_IRQ (1 << 29) #define BM_SSP_CTRL1_RESP_ERR_IRQ_EN (1 << 28) #define BM_SSP_CTRL1_RESP_TIMEOUT_IRQ (1 << 27) #define BM_SSP_CTRL1_RESP_TIMEOUT_IRQ_EN (1 << 26) #define BM_SSP_CTRL1_DATA_TIMEOUT_IRQ (1 << 25) #define BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN (1 << 24) #define BM_SSP_CTRL1_DATA_CRC_IRQ (1 << 23) #define BM_SSP_CTRL1_DATA_CRC_IRQ_EN (1 << 22) #define BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ (1 << 21) #define BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ_EN (1 << 20) #define BM_SSP_CTRL1_RECV_TIMEOUT_IRQ (1 << 17) #define BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN (1 << 16) #define BM_SSP_CTRL1_FIFO_OVERRUN_IRQ (1 << 15) #define BM_SSP_CTRL1_FIFO_OVERRUN_IRQ_EN (1 << 14) #define BM_SSP_CTRL1_DMA_ENABLE (1 << 13) #define BM_SSP_CTRL1_PHASE (1 << 10) #define BM_SSP_CTRL1_POLARITY (1 << 9) #define BP_SSP_CTRL1_WORD_LENGTH 4 #define BM_SSP_CTRL1_WORD_LENGTH (0xf << 4) #define BF_SSP_CTRL1_WORD_LENGTH(v) \ (((v) << 4) & BM_SSP_CTRL1_WORD_LENGTH) #define BV_SSP_CTRL1_WORD_LENGTH__FOUR_BITS 0x3 #define BV_SSP_CTRL1_WORD_LENGTH__EIGHT_BITS 0x7 #define BV_SSP_CTRL1_WORD_LENGTH__SIXTEEN_BITS 0xF #define BP_SSP_CTRL1_SSP_MODE 0 #define BM_SSP_CTRL1_SSP_MODE 0xf #define BF_SSP_CTRL1_SSP_MODE(v) \ (((v) << 0) & BM_SSP_CTRL1_SSP_MODE) #define BV_SSP_CTRL1_SSP_MODE__SPI 0x0 #define BV_SSP_CTRL1_SSP_MODE__SSI 0x1 #define BV_SSP_CTRL1_SSP_MODE__SD_MMC 0x3 #define BV_SSP_CTRL1_SSP_MODE__MS 0x4 #define HW_SSP_DATA(h) (ssp_is_old(h) ? 0x070 : 0x090) #define HW_SSP_SDRESP0(h) (ssp_is_old(h) ? 0x080 : 0x0a0) #define HW_SSP_SDRESP1(h) (ssp_is_old(h) ? 0x090 : 0x0b0) #define HW_SSP_SDRESP2(h) (ssp_is_old(h) ? 0x0a0 : 0x0c0) #define HW_SSP_SDRESP3(h) (ssp_is_old(h) ? 0x0b0 : 0x0d0) #define HW_SSP_STATUS(h) (ssp_is_old(h) ? 0x0c0 : 0x100) #define BM_SSP_STATUS_CARD_DETECT (1 << 28) #define BM_SSP_STATUS_SDIO_IRQ (1 << 17) #define BM_SSP_STATUS_FIFO_EMPTY (1 << 5) #define BF_SSP(value, field) (((value) << BP_SSP_##field) & BM_SSP_##field) #define SSP_PIO_NUM 3 enum mxs_ssp_id { IMX23_SSP, IMX28_SSP, }; struct mxs_ssp { struct device *dev; void __iomem *base; struct clk *clk; unsigned int clk_rate; enum mxs_ssp_id devid; struct dma_chan *dmach; unsigned int dma_dir; enum dma_transfer_direction slave_dirn; u32 ssp_pio_words[SSP_PIO_NUM]; }; void mxs_ssp_set_clk_rate(struct mxs_ssp *ssp, unsigned int rate); #endif /* __LINUX_SPI_MXS_SPI_H__ */