背景:

通过DAI、DMA、Codec文章对RK系列开发板音频驱动适配指南曾经论述了,本次次要介绍音频驱动适配中的HCS适配。

RK系列开发板 HCS适配:

配置HCS的次要作用是实现各设施节点、服务的参数与公有数据配置,个别在设施驱动注册与初始化时加载到零碎中,在音频解决场景中的各阶段应用。HDF框架提供了2组配置文件 ,别离是专用参数配置文件和设施公有数据配置的,私有参数须按HCS标准配置,公有数据配置既恪守HCS标准,开发者还可自定义配置项,并提供配置解析办法即可。

1.1.私有参数配置

•配置文件门路:
vendor\xxxx\RK系列开发板\hdfconfig\khdf\deviceinfo
•DAI模块:

device_dai0 :: device {    device0 :: deviceNode {        policy = 1;                // dai模块只对内核提供服务        priority = 50;            // dai模块需在HDF_AUDIO模块之前加载        preload = 0;             // dai模块加载形式        permission = 0666;              // dai模块拜访权限        moduleName = "DAI_RK系列开发板";    // 模块名,与g_daiDriverEntry中的模块名统一        serviceName = "dai_service";      // 对外提供的服务名称        deviceMatchAttr = "hdf_dai_driver";  //公有配置属性名称,通过此名称匹配对应的公有数据    }}

•DMA模块:

device_dma :: device {    device0 :: deviceNode {        policy = 1;        priority = 50;        preload = 0;        permission = 0666;        moduleName = "DMA_RK系列开发板";       // 模块名,与g_platformDriverEntry中的模块名统一        serviceName = "dma_service_0";        deviceMatchAttr = "hdf_dma_driver";    }}

•Codec模块:

device_codec_ex :: device {    device0 :: deviceNode {        policy = 1;        priority = 50;        preload = 0;        permission = 0666;        moduleName = "CODEC_ES8316";   // 模块名,与g_es8388DriverEntry中的模块名统一        serviceName = "codec_service_1";        deviceMatchAttr = "hdf_codec_driver_ex";    }}

1.2.公有参数配置

•配置文件门路:
vendor\xxxx\RK系列开发板\hdf_config\khdf\audio
•audio_config.hcs:audio声卡配置信息,配置抉择运行时的codec、dai、dma、dsp具体芯片:

controller_0x120c1000 :: card_controller {    match_attr = "hdf_audio_driver_0";     //公有配置关键字,通过此与      device_info.hcs中的各个模块的公有属性进行匹配    serviceName = "hdf_audio_codec_dev0";  //此声卡对外提供的服务名称    codecName = "codec_service_0";           //此声卡应用的codec服务名称    platformName = "dma_service_0";        //此声卡应用的dma服务名称    cpuDaiName = "dai_service";            //此声卡应用的cpu dai服务名称    codecDaiName = "codec_dai";            //此声卡应用的codec dai服务名称    dspName = "dsp_service_0";             //此声卡应用的dsp服务名称    dspDaiName = "dsp_dai";                //此声卡应用的dsp dai服务名称}controller_0x120c1001 :: card_controller {    match_attr = "hdf_audio_driver_1";    serviceName = "hdf_audio_smartpa_dev0";    accessoryName = "codec_service_1";    platformName = "dma_service_0";    cpuDaiName = "dai_service";    accessoryDaiName = "accessory_dai";    dspName = "dsp_service_0";    dspDaiName = "dsp_dai";}

•dai_config.hcs:dai的公有配置信息:

controller_0x120c1020 :: dai_controller {    match_attr = "hdf_dai_driver";    //cpu dai公有配置关键字    serviceName = "dai_service";    //配置对应的服务名称,要和device_info.hcs中的cpu dai模块服务名称雷同    idInfo {        chipName = "RK系列开发板";        chipIdRegister = 0xff880000;        chipIdSize = 0x1000;    }    regConfig {        ctrlParamsSeqConfig = [            0xffffff,    0xffffff,    0,     0,     0x0,    0x2,    0x3,    0,    0,    // accessory enable            0xffffff,    0xffffff,    0,     0,     0x0,    0x2,    0x3,    0,    0     // codec enable        ];        controlsConfig = [            6,  4,  0,            7,  4,  0        ];        daiStartupSeqConfig = [            0x0000,  0x0000,  0,  0,  0,   0xF, 0xF, 0,  0xf,    // AIP_I2S_REG_CFG0            0x0004,  0x0004,  0,  0,  0,   0xF,  0xF, 0, 0xf,   // AIP_I2S_REG_CFG1            0x0008,  0x0008,  0,  0,  0,    0xFFFFF,  0xFFFFF,  0, 0x00071f1f,                  0x0010  0x0010,  16,16,0,   0xFFFFFFFF,    0xFFFFFFFF,    0,   0x1f0100              ];        daiParamsSeqConfig = [            0x0008,    0x0008,   16,  16,  0x0,  0xFF,  0xFF,  0,  0x0,    // ao i2s_frequency            0x0008,    0x0008,    0,   0,  0x1E, 0xFF, 0xFF,  0,  0x0,    // ao i2s_frequency            0x0000,    0x0000,    0,   0,  0x0,   0xF,   0xF,    0,  0x0,    // ao i2s_format            0x0000,    0x0000,    15, 15,  0x0,   0x3,   0x3,  0,  0x0,    // ao i2s_channel            0x0008,    0x0008,   16,  16,  0x0,  0xFF, 0xFF, 0, 0x0,    // ai i2s_frequency            0x0008,    0x0008,    8,   8,  0x1E,  0xFF,  0xFF,  0, 0x0,   // ai i2s_frequency            0x0004,    0x0004,    0,   0,  0x0,    0xF,    0xF,   0, 0x0,    // ai i2s_format            0x0004,    0x0004,    15,  15,  0x0,   0x3,   0x3,  0, 0x0     // ai i2s_channel        ];    }}

总结:

加上前三篇RK系列开发板音频驱动的适配介绍,以及本次介绍HCS的适配步骤以及外围代码,音频驱动的适配,根本就实现了。接下来一篇会解说Audio模块的驱动编译。