eac1ca22bd
NOTE: this commit does not introduce any change, ideally even the binary should
be almost the same. I checked the disassembly by hand and there are only a few
differences here and there, mostly the compiler decides to compile very close
expressions slightly differently. I tried to run the new code on several targets
to make sure and saw no difference.
The major syntax changes of the new headers are as follows:
- BF_{WR,SET,CLR} are now superpowerful and allows to set several fileds at once:
BF_WR(reg, field1(value1), field2(value2), ...)
- BF_CS (use like BF_WR) does a write to reg_CLR and then reg_SET instead of RMW
- there is no more need for macros like BF_{WR_,SET,CLR}_V, since one can simply
BF_WR with field_V(name)
- the old BF_SETV macro has no trivial equivalent and is replaced with its
its equivalent for BF_WR(reg_SET, ...)
I also rename the register headers: "regs/regs-x.h" -> "regs/x.h" to avoid the
redundant "regs".
Final note: the registers were generated using the following command:
./headergen_v2 -g imx -o ../../firmware/target/arm/imx233/regs/ desc/regs-stmp3{600,700,780}.xml
Change-Id: I7485e8b4315a0929a8edb63e7fa1edcaa54b1edc
82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2011 by Amaury Pouly
|
|
*
|
|
* 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"
|
|
|
|
#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);
|
|
/* pullups/alternative are ignored on targets which don't support it */
|
|
void imx233_ssp_setup_ssp1_sd_mmc_pins(bool enable_pullups, unsigned bus_width, bool use_alt);
|
|
void imx233_ssp_setup_ssp2_sd_mmc_pins(bool enable_pullups, unsigned bus_width);
|
|
/* 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__ */
|