From 86c64d41517c6a62acab553e35b8c9fe1575b405 Mon Sep 17 00:00:00 2001 From: Amaury Pouly Date: Sun, 3 Jul 2011 15:22:09 +0000 Subject: imx233: add missing i2c file git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30121 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/imx233/i2c-imx233.h | 137 ++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 firmware/target/arm/imx233/i2c-imx233.h (limited to 'firmware/target/arm/imx233/i2c-imx233.h') diff --git a/firmware/target/arm/imx233/i2c-imx233.h b/firmware/target/arm/imx233/i2c-imx233.h new file mode 100644 index 0000000000..5ee22efd2a --- /dev/null +++ b/firmware/target/arm/imx233/i2c-imx233.h @@ -0,0 +1,137 @@ +/*************************************************************************** + * __________ __ ___. + * 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 __I2C_IMX233_H__ +#define __I2C_IMX233_H__ + +#include "cpu.h" +#include "system.h" +#include "system-target.h" +#include "i2c.h" + +#define HW_I2C_BASE 0x80058000 + +#define HW_I2C_CTRL0 (*(volatile uint32_t *)(HW_I2C_BASE + 0x0)) +#define HW_I2C_CTRL0__XFER_COUNT_BM 0xffff +#define HW_I2C_CTRL0__TRANSMIT (1 << 16) +#define HW_I2C_CTRL0__MASTER_MODE (1 << 17) +#define HW_I2C_CTRL0__SLAVE_ADDRESS_ENABLE (1 << 18) +#define HW_I2C_CTRL0__PRE_SEND_START (1 << 19) +#define HW_I2C_CTRL0__POST_SEND_STOP (1 << 20) +#define HW_I2C_CTRL0__RETAIN_CLOCK (1 << 21) +#define HW_I2C_CTRL0__CLOCK_HELD (1 << 22) +#define HW_I2C_CTRL0__PIO_MODE (1 << 24) +#define HW_I2C_CTRL0__SEND_NAK_ON_LAST (1 << 25) +#define HW_I2C_CTRL0__ACKNOWLEDGE (1 << 26) +#define HW_I2C_CTRL0__RUN (1 << 29) + +#define HW_I2C_TIMING0 (*(volatile uint32_t *)(HW_I2C_BASE + 0x10)) +#define HW_I2C_TIMING0__RECV_COUNT_BM 0x3ff +#define HW_I2C_TIMING0__HIGH_COUNT_BM (0x3ff << 16) +#define HW_I2C_TIMING0__HIGH_COUNT_BP 16 + +#define HW_I2C_TIMING1 (*(volatile uint32_t *)(HW_I2C_BASE + 0x20)) +#define HW_I2C_TIMING1__XMIT_COUNT_BM 0x3ff +#define HW_I2C_TIMING1__LOW_COUNT_BM (0x3ff << 16) +#define HW_I2C_TIMING1__LOW_COUNT_BP 16 + +#define HW_I2C_TIMING2 (*(volatile uint32_t *)(HW_I2C_BASE + 0x30)) +#define HW_I2C_TIMING2__LEADIN_COUNT_BM 0x3ff +#define HW_I2C_TIMING2__BUS_FREE_BM (0x3ff << 16) +#define HW_I2C_TIMING2__BUS_FREE_BP 16 + +#define HW_I2C_CTRL1 (*(volatile uint32_t *)(HW_I2C_BASE + 0x40)) +#define HW_I2C_CTRL1__SLAVE_IRQ (1 << 0) +#define HW_I2C_CTRL1__SLAVE_STOP_IRQ (1 << 1) +#define HW_I2C_CTRL1__MASTER_LOSS_IRQ (1 << 2) +#define HW_I2C_CTRL1__EARLY_TERM_IRQ (1 << 3) +#define HW_I2C_CTRL1__OVERSIZE_XFER_TERM_IRQ (1 << 4) +#define HW_I2C_CTRL1__NO_SLAVE_ACK_IRQ (1 << 5) +#define HW_I2C_CTRL1__DATA_ENGINE_COMPLT_IRQ (1 << 6) +#define HW_I2C_CTRL1__BUS_FREE_IRQ (1 << 7) +#define HW_I2C_CTRL1__SLAVE_IRQ_EN (1 << 8) +#define HW_I2C_CTRL1__SLAVE_STOP_IRQ_EN (1 << 9) +#define HW_I2C_CTRL1__MASTER_LOSS_IRQ_EN (1 << 10) +#define HW_I2C_CTRL1__EARLY_TERM_IRQ_EN (1 << 11) +#define HW_I2C_CTRL1__OVERSIZE_XFER_TERM_IRQ_EN (1 << 12) +#define HW_I2C_CTRL1__NO_SLAVE_ACK_IRQ_EN (1 << 13) +#define HW_I2C_CTRL1__DATA_ENGINE_COMPLT_IRQ_EN (1 << 14) +#define HW_I2C_CTRL1__BUS_FREE_IRQ_EN (1 << 15) +#define HW_I2C_CTRL1__BCAST_SLAVE_EN (1 << 24) +#define HW_I2C_CTRL1__FORCE_CLK_IDLE (1 << 25) +#define HW_I2C_CTRL1__FORCE_DATA_IDLE (1 << 26) +#define HW_I2C_CTRL1__ACK_MODE (1 << 27) +#define HW_I2C_CTRL1__CLR_GOT_A_NAK (1 << 28) +#define HW_I2C_CTRL1__ALL_IRQ 0xff +#define HW_I2C_CTRL1__ALL_IRQ_EN 0xff00 + +#define HW_I2C_STAT (*(volatile uint32_t *)(HW_I2C_BASE + 0x50)) +#define HW_I2C_STAT__SLAVE_IRQ_SUMMARY (1 << 0) +#define HW_I2C_STAT__SLAVE_STOP_IRQ_SUMMARY (1 << 1) +#define HW_I2C_STAT__MASTER_LOSS_IRQ_SUMMARY (1 << 2) +#define HW_I2C_STAT__EARLY_TERM_IRQ_SUMMARY (1 << 3) +#define HW_I2C_STAT__OVERSIZE_XFER_TERM_IRQ_SUMMARY (1 << 4) +#define HW_I2C_STAT__NO_SLAVE_ACK_IRQ_SUMMARY (1 << 5) +#define HW_I2C_STAT__DATA_ENGINE_COMPLT_IRQ_SUMMARY (1 << 6) +#define HW_I2C_STAT__BUS_FREE_IRQ_SUMMARY (1 << 7) +#define HW_I2C_STAT__SLAVE_BUSY (1 << 8) +#define HW_I2C_STAT__DATA_ENGINE_BUSY (1 << 9) +#define HW_I2C_STAT__CLK_GEN_BUSY (1 << 10) +#define HW_I2C_STAT__BUS_BUSY (1 << 11) +#define HW_I2C_STAT__DATA_ENGINE_DMA_WAIT (1 << 12) +#define HW_I2C_STAT__SLAVE_SEARCHING (1 << 13) +#define HW_I2C_STAT__SLAVE_FOUND (1 << 14) +#define HW_I2C_STAT__SLAVE_ADDR_EQ_ZERO (1 << 15) +#define HW_I2C_STAT__RCVD_SLAVE_ADDR_BM (0xff << 16) +#define HW_I2C_STAT__RCVD_SLAVE_ADDR_BP 16 +#define HW_I2C_STAT__GOT_A_NAK (1 << 28) +#define HW_I2C_STAT__ANY_ENABLED_IRQ (1 << 29) +#define HW_I2C_STAT__MASTER_PRESENT (1 << 31) + +#define HW_I2C_DATA (*(volatile uint32_t *)(HW_I2C_BASE + 0x60)) + +#define HW_I2C_DEBUG0 (*(volatile uint32_t *)(HW_I2C_BASE + 0x70)) + +#define HW_I2C_DEBUG1 (*(volatile uint32_t *)(HW_I2C_BASE + 0x80)) + +#define HW_I2C_VERSION (*(volatile uint32_t *)(HW_I2C_BASE + 0x90)) + +enum imx233_i2c_error_t +{ + I2C_SUCCESS = 0, + I2C_ERROR = -1, + I2C_TIMEOUT = -2, + I2C_MASTER_LOSS = -3, + I2C_NO_SLAVE_ACK = -4, + I2C_SLAVE_NAK = -5 +}; + +void imx233_i2c_init(void); +/* start building a transfer, will acquire an exclusive lock */ +void imx233_i2c_begin(void); +/* add stage */ +enum imx233_i2c_error_t imx233_i2c_add(bool start, bool transmit, void *buffer, unsigned size, bool stop); +/* end building a transfer and start the transfer */ +enum imx233_i2c_error_t imx233_i2c_end(unsigned timeout); + +#endif // __DMA_IMX233_H__ -- cgit v1.2.3