/**************************************************************************** * vi_encoder.c * * Wii Audio/Video Encoder support * * Copyright (C) 2009 Eke-Eke, with some code from libogc (C) Hector Martin * * Redistribution and use of this code or any derivative works are permitted * provided that the following conditions are met: * * - Redistributions may not be sold, nor may they be used in a commercial * product or activity. * * - Redistributions that are modified from the original source must include the * complete source code, including the source code for all components used by a * binary built from the modified sources. However, as a special exception, the * source code distributed need not include anything that is normally distributed * (in either source or binary form) with the major components (compiler, kernel, * and so on) of the operating system on which the executable runs, unless that * component itself accompanies the executable. * * - Redistributions 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. * * 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 OWNER 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 #include #include #include #include #include #include "../../defines/gx_defines.h" void udelay(int us); static u32 i2cIdentFirst = 0; static u32 i2cIdentFlag = 1; static vu32* const _i2cReg = (u32*)0xCD800000; static INLINE void __viOpenI2C(u32 channel) { u32 val = ((_i2cReg[49]&~0x8000)|0x4000) | _SHIFTL(channel,15,1); _i2cReg[49] = val; } static INLINE void __viSetSCL(u32 channel) { u32 val = (_i2cReg[48]&~0x4000) | _SHIFTL(channel,14,1); _i2cReg[48] = val; } static INLINE void __viSetSDA(u32 channel) { u32 val = (_i2cReg[48]&~0x8000) | _SHIFTL(channel,15,1); _i2cReg[48] = val; } #define __viGetSDA() (_SHIFTR(_i2cReg[50],15,1)) static u32 __sendSlaveAddress(u8 addr) { u32 i; __viSetSDA(i2cIdentFlag^1); udelay(2); __viSetSCL(0); for(i=0;i<8;i++) { if (addr&0x80) __viSetSDA(i2cIdentFlag); else __viSetSDA(i2cIdentFlag^1); udelay(2); __viSetSCL(1); udelay(2); __viSetSCL(0); addr <<= 1; } __viOpenI2C(0); udelay(2); __viSetSCL(1); udelay(2); if ((i2cIdentFlag == 1) && __viGetSDA()!=0) return 0; __viSetSDA(i2cIdentFlag^1); __viOpenI2C(1); __viSetSCL(0); return 1; } static u32 __VISendI2CData(u8 addr,void *val,u32 len) { u8 c; s32 i,j; u32 level,ret; if(i2cIdentFirst==0) { __viOpenI2C(0); udelay(4); i2cIdentFlag = 0; if(__viGetSDA()!=0) i2cIdentFlag = 1; i2cIdentFirst = 1; } _CPU_ISR_Disable(level); __viOpenI2C(1); __viSetSCL(1); __viSetSDA(i2cIdentFlag); udelay(4); ret = __sendSlaveAddress(addr); if(ret == 0) { _CPU_ISR_Restore(level); return 0; } __viOpenI2C(1); for(i=0;i