1/* $NetBSD: imx51_i2c.c,v 1.3 2022/07/22 23:43:23 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 2012, 2015 Genetec Corporation. All rights reserved. 5 * Written by Hashimoto Kenichi for Genetec Corporation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__KERNEL_RCSID(0, "$NetBSD: imx51_i2c.c,v 1.3 2022/07/22 23:43:23 thorpej Exp $"); 31 32#include "opt_imx.h" 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/device.h> 37 38#include <arm/imx/imx51reg.h> 39#include <arm/imx/imx51var.h> 40#include <arm/imx/imx51_ccmvar.h> 41#include <arm/imx/imxi2cvar.h> 42 43int 44imxi2c_match(device_t parent, cfdata_t cf, void *aux) 45{ 46 struct axi_attach_args *aa = aux; 47 48 switch (aa->aa_addr) { 49 case I2C1_BASE: 50 case I2C2_BASE: 51#ifdef IMX50 52 case I2C3_BASE: 53#endif 54 return 1; 55 } 56 57 return 0; 58} 59 60void 61imxi2c_attach(device_t parent, device_t self, void *aux) 62{ 63 struct axi_attach_args * aa = aux; 64 65 if (aa->aa_size <= 0) 66 aa->aa_size = I2C_SIZE; 67 68 imxi2c_attach_common(self, 69 aa->aa_iot, aa->aa_addr, aa->aa_size, 70 imx51_get_clock(IMX51CLK_PERCLK_ROOT), 400000); 71} 72