/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2011 by Amaury Pouly * * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach * * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #ifndef __SSP_IMX233_H__ #define __SSP_IMX233_H__ #include "cpu.h" #include "system.h" #include "system-target.h" #include "pinctrl-imx233.h" #include "dma-imx233.h" /* ssp can value 1 or 2 */ #define __SSP_SELECT(ssp, ssp1, ssp2) ((ssp) == 1 ? (ssp1) : (ssp2)) #define INT_SRC_SSP_DMA(ssp) __SSP_SELECT(ssp, INT_SRC_SSP1_DMA, INT_SRC_SSP2_DMA) #define INT_SRC_SSP_ERROR(ssp) __SSP_SELECT(ssp, INT_SRC_SSP1_ERROR, INT_SRC_SSP2_ERROR) #define HW_SSP1_BASE 0x80010000 #define HW_SSP2_BASE 0x80034000 #define HW_SSP_BASE(ssp) __SSP_SELECT(ssp, HW_SSP1_BASE, HW_SSP2_BASE) #define HW_SSP_CTRL0(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x0)) #define HW_SSP_CTRL0__RUN (1 << 29) #define HW_SSP_CTRL0__SDIO_IRQ_CHECK (1 << 28) #define HW_SSP_CTRL0__LOCK_CS (1 << 27) #define HW_SSP_CTRL0__IGNORE_CRC (1 << 26) #define HW_SSP_CTRL0__READ (1 << 25) #define HW_SSP_CTRL0__DATA_XFER (1 << 24) #define HW_SSP_CTRL0__BUS_WIDTH_BM (3 << 22) #define HW_SSP_CTRL0__BUS_WIDTH_BP 22 #define HW_SSP_CTRL0__BUS_WIDTH__ONE_BIT 0 #define HW_SSP_CTRL0__BUS_WIDTH__FOUR_BIT 1 #define HW_SSP_CTRL0__BUS_WIDTH__EIGHT_BIT 2 #define HW_SSP_CTRL0__WAIT_FOR_IRQ (1 << 21) #define HW_SSP_CTRL0__WAIT_FOR_CMD (1 << 20) #define HW_SSP_CTRL0__LONG_RESP (1 << 19) #define HW_SSP_CTRL0__CHECK_RESP (1 << 18) #define HW_SSP_CTRL0__GET_RESP (1 << 17) #define HW_SSP_CTRL0__ENABLE (1 << 16) #define HW_SSP_CTRL0__XFER_COUNT_BM 0xffff #define HW_SSP_CMD0(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x10)) #define HW_SSP_CMD0__SLOW_CLKING_EN (1 << 22) #define HW_SSP_CMD0__CONT_CLKING_EN (1 << 21) #define HW_SSP_CMD0__APPEND_8CYC (1 << 20) #define HW_SSP_CMD0__BLOCK_SIZE_BM (0xf << 16) #define HW_SSP_CMD0__BLOCK_SIZE_BP 16 #define HW_SSP_CMD0__BLOCK_COUNT_BM (0xff << 8) #define HW_SSP_CMD0__BLOCK_COUNT_BP 8 #define HW_SSP_CMD0__CMD_BM 0xff #define HW_SSP_CMD1(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x20)) #define HW_SSP_TIMING(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x50)) #define HW_SSP_TIMING__CLOCK_TIMEOUT_BM 0xffff0000 #define HW_SSP_TIMING__CLOCK_TIMEOUT_BP 16 #define HW_SSP_TIMING__CLOCK_DIVIDE_BM 0xff00 #define HW_SSP_TIMING__CLOCK_DIVIDE_BP 8 #define HW_SSP_TIMING__CLOCK_RATE_BM 0xff #define HW_SSP_CTRL1(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x60)) #define HW_SSP_CTRL1__SDIO_IRQ (1 << 31) #define HW_SSP_CTRL1__SDIO_IRQ_EN (1 << 30) #define HW_SSP_CTRL1__RESP_ERR_IRQ (1 << 29) #define HW_SSP_CTRL1__RESP_ERR_IRQ_EN (1 << 28) #define HW_SSP_CTRL1__RESP_TIMEOUT_IRQ (1 << 27) #define HW_SSP_CTRL1__RESP_TIMEOUT_IRQ_EN (1 << 26) #define HW_SSP_CTRL1__DATA_TIMEOUT_IRQ (1 << 25) #define HW_SSP_CTRL1__DATA_TIMEOUT_IRQ_EN (1 << 24) #define HW_SSP_CTRL1__DATA_CRC_IRQ (1 << 23) #define HW_SSP_CTRL1__DATA_CRC_IRQ_EN (1 << 22) #define HW_SSP_CTRL1__FIFO_UNDERRUN_IRQ (1 << 21) #define HW_SSP_CTRL1__FIFO_UNDERRUN_IRQ_EN (1 << 20) #define HW_SSP_CTRL1__RECV_TIMEOUT_IRQ (1 << 17) #define HW_SSP_CTRL1__RECV_TIMEOUT_IRQ_EN (1 << 16) #define HW_SSP_CTRL1__FIFO_OVERRUN_IRQ (1 << 15) #define HW_SSP_CTRL1__FIFO_OVERRUN_IRQ_EN (1 << 14) #define HW_SSP_CTRL1__DMA_ENABLE (1 << 13) #define HW_SSP_CTRL1__SLAVE_OUT_DISABLE (1 << 11) #define HW_SSP_CTRL1__PHASE (1 << 10) #define HW_SSP_CTRL1__POLARITY (1 << 9) #define HW_SSP_CTRL1__SLAVE_MODE (1 << 8) #define HW_SSP_CTRL1__WORD_LENGTH_BM (0xf << 4) #define HW_SSP_CTRL1__WORD_LENGTH_BP 4 #define HW_SSP_CTRL1__WORD_LENGTH__EIGHT_BITS 0x7 #define HW_SSP_CTRL1__SSP_MODE_BM 0xf #define HW_SSP_CTRL1__SSP_MODE__SD_MMC 0x3 #define HW_SSP_CTRL1__ALL_IRQ 0xaaa28000 #define HW_SSP_DATA(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x70)) #define HW_SSP_SDRESP0(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x80)) #define HW_SSP_SDRESP1(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x90)) #define HW_SSP_SDRESP2(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0xA0)) #define HW_SSP_SDRESP3(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0xB0)) #define HW_SSP_STATUS(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0xC0)) #define HW_SSP_STATUS__RECV_TIMEOUT_STAT (1 << 11) #define HW_SSP_STATUS__TIMEOUT (1 << 12) #define HW_SSP_STATUS__DATA_CRC_ERR (1 << 13) #define HW_SSP_STATUS__RESP_TIMEOUT (1 << 14) #define HW_SSP_STATUS__RESP_ERR (1 << 15) #define HW_SSP_STATUS__RESP_CRC_ERR (1 << 16) #define HW_SSP_STATUS__CARD_DETECT (1 << 28) #define HW_SSP_STATUS__ALL_ERRORS 0x1f800 #define HW_SSP_DEBUG(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x100)) #define HW_SSP_VERSION(ssp) (*(volatile uint32_t *)(HW_SSP_BASE(ssp) + 0x110)) #define IMX233_MAX_SSP_XFER_SIZE IMX233_MAX_SINGLE_DMA_XFER_SIZE enum imx233_ssp_error_t { SSP_SUCCESS = 0, SSP_ERROR = -1, SSP_TIMEOUT = -2, }; enum imx233_ssp_resp_t { SSP_NO_RESP = 0, SSP_SHORT_RESP, SSP_LONG_RESP }; typedef void (*ssp_detect_cb_t)(int ssp); void imx233_ssp_init(void); void imx233_ssp_start(int ssp); void imx233_ssp_stop(int ssp); /* only softreset between start and stop or it might hang ! */ void imx233_ssp_softreset(int ssp); void imx233_ssp_set_timings(int ssp, int divide, int rate, int timeout); void imx233_ssp_set_mode(int ssp, unsigned mode); void imx233_ssp_set_bus_width(int ssp, unsigned width); /* block_size uses the SSP format so it's actually the log_2 of the block_size */ void imx233_ssp_set_block_size(int ssp, unsigned log_block_size); /* SD/MMC facilities */ enum imx233_ssp_error_t imx233_ssp_sd_mmc_transfer(int ssp, uint8_t cmd, uint32_t cmd_arg, enum imx233_ssp_resp_t resp, void *buffer, unsigned block_count, bool wait4irq, bool read, uint32_t *resp_ptr); void imx233_ssp_setup_ssp1_sd_mmc_pins(bool enable_pullups, unsigned bus_width, unsigned drive_strength, bool use_alt); void imx233_ssp_setup_ssp2_sd_mmc_pins(bool enable_pullups, unsigned bus_width, unsigned drive_strength); /* after callback is fired, imx233_ssp_sdmmc_setup_detect needs to be called * to enable detection again. If first_time is true, the callback will * be called if the sd card is inserted when the function is called, otherwise * it will be called on the next insertion change. * By default, sd_detect=1 means sd inserted; invert reverses this behaviour */ void imx233_ssp_sdmmc_setup_detect(int ssp, bool enable, ssp_detect_cb_t fn, bool first_time, bool invert); /* needs prior setup with imx233_ssp_sdmmc_setup_detect */ bool imx233_ssp_sdmmc_is_detect_inverted(int spp); /* raw value of the detect pin */ bool imx233_ssp_sdmmc_detect_raw(int ssp); /* corrected value given the invert setting */ bool imx233_ssp_sdmmc_detect(int ssp); /* SD/MMC requires that the card be provided the clock during an init sequence of * at least 1msec (or 74 clocks). Does NOT touch the clock so it has to be correct. */ void imx233_ssp_sd_mmc_power_up_sequence(int ssp); #endif /* __SSP_IMX233_H__ */