/* * Copyright (c) 2009 NVIDIA Corporation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the NVIDIA Corporation nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #include "ds2482_bridge.h" #include "pcf50626_i2c.h" #include "ds2482_i2c.h" #include "pcf50626_reg.h" #include "ds2482_reg.h" NvBool Ds2482Setup(NvOdmPmuDeviceHandle hDevice) { NvU8 data = 0; // One wire I2C bridge //Device Reset Status if (!Ds2482OWI2cRead8(hDevice, DS2482_DEVICE_RESET, &data)) return NV_FALSE; //NVODMPMU_PRINTF(("Device Reset reg 0x%02x = 0x%02x\n", DS2482_DEVICE_RESET, data)); //1-Wire Reset Status if (!Ds2482OWI2cRead8(hDevice, DS2482_1WIRE_RESET, &data)) return NV_FALSE; //NVODMPMU_PRINTF(("1-Wire Reset reg 0x%02x = 0x%02x\n", DS2482_1WIRE_RESET, data)); while(1) { if (!Ds2482OWI2cWrite8(hDevice, DS2482_READ_DATA_REG_ADDR, DS2482_DEVICE_RESET)) return NV_FALSE; if (!Ds2482OWI2cRead8(hDevice, DS2482_READ_DATA_REG_ADDR, &data)) return NV_FALSE; if (!(data & 0x01)) break; } return NV_TRUE; }