739 static int set_dac_channels(struct cmipci *cm, struct cmipci_pcm *rec, int channels)  in set_dac_channels()  argument
742 		if (!cm->can_multi_ch || !rec->ch)  in set_dac_channels()
744 		if (rec->fmt != 0x03) /* stereo 16bit only */  in set_dac_channels()
782 static int snd_cmipci_pcm_prepare(struct cmipci *cm, struct cmipci_pcm *rec,  in snd_cmipci_pcm_prepare()  argument
789 	rec->fmt = 0;  in snd_cmipci_pcm_prepare()
790 	rec->shift = 0;  in snd_cmipci_pcm_prepare()
792 		rec->fmt |= 0x02;  in snd_cmipci_pcm_prepare()
794 			rec->shift++; /* 24/32bit */  in snd_cmipci_pcm_prepare()
797 		rec->fmt |= 0x01;  in snd_cmipci_pcm_prepare()
798 	if (rec->is_dac && set_dac_channels(cm, rec, runtime->channels) < 0) {  in snd_cmipci_pcm_prepare()
803 	rec->offset = runtime->dma_addr;  in snd_cmipci_pcm_prepare()
805 	rec->dma_size = runtime->buffer_size << rec->shift;  in snd_cmipci_pcm_prepare()
806 	period_size = runtime->period_size << rec->shift;  in snd_cmipci_pcm_prepare()
809 		rec->dma_size = (rec->dma_size * runtime->channels) / 2;  in snd_cmipci_pcm_prepare()
816 	reg = rec->ch ? CM_REG_CH1_FRAME1 : CM_REG_CH0_FRAME1;  in snd_cmipci_pcm_prepare()
817 	snd_cmipci_write(cm, reg, rec->offset);  in snd_cmipci_pcm_prepare()
819 	reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2;  in snd_cmipci_pcm_prepare()
820 	snd_cmipci_write_w(cm, reg, rec->dma_size - 1);  in snd_cmipci_pcm_prepare()
824 	val = rec->ch ? CM_CHADC1 : CM_CHADC0;  in snd_cmipci_pcm_prepare()
825 	if (rec->is_dac)  in snd_cmipci_pcm_prepare()
845 	if (rec->ch) {  in snd_cmipci_pcm_prepare()
857 	if (rec->ch) {  in snd_cmipci_pcm_prepare()
859 		val |= rec->fmt << CM_CH1FMT_SHIFT;  in snd_cmipci_pcm_prepare()
862 		val |= rec->fmt << CM_CH0FMT_SHIFT;  in snd_cmipci_pcm_prepare()
865 		val &= ~(CM_CH0_SRATE_MASK << (rec->ch * 2));  in snd_cmipci_pcm_prepare()
866 		val |= freq_ext << (rec->ch * 2);  in snd_cmipci_pcm_prepare()
871 	if (!rec->is_dac && cm->chip_version) {  in snd_cmipci_pcm_prepare()
878 	rec->running = 0;  in snd_cmipci_pcm_prepare()
887 static int snd_cmipci_pcm_trigger(struct cmipci *cm, struct cmipci_pcm *rec,  in snd_cmipci_pcm_trigger()  argument
893 	inthld = CM_CH0_INT_EN << rec->ch;  in snd_cmipci_pcm_trigger()
894 	chen = CM_CHEN0 << rec->ch;  in snd_cmipci_pcm_trigger()
895 	reset = CM_RST_CH0 << rec->ch;  in snd_cmipci_pcm_trigger()
896 	pause = CM_PAUSE0 << rec->ch;  in snd_cmipci_pcm_trigger()
901 		rec->running = 1;  in snd_cmipci_pcm_trigger()
910 		rec->running = 0;  in snd_cmipci_pcm_trigger()
917 		rec->needs_silencing = rec->is_dac;  in snd_cmipci_pcm_trigger()
940 static snd_pcm_uframes_t snd_cmipci_pcm_pointer(struct cmipci *cm, struct cmipci_pcm *rec,  in snd_cmipci_pcm_pointer()  argument
946 	if (!rec->running)  in snd_cmipci_pcm_pointer()
949 	reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2;  in snd_cmipci_pcm_pointer()
952 		if (rem < rec->dma_size)  in snd_cmipci_pcm_pointer()
958 	ptr = (rec->dma_size - (rem + 1)) >> rec->shift;  in snd_cmipci_pcm_pointer()
960 	reg = rec->ch ? CM_REG_CH1_FRAME1 : CM_REG_CH0_FRAME1;  in snd_cmipci_pcm_pointer()
961 	ptr = snd_cmipci_read(cm, reg) - rec->offset;  in snd_cmipci_pcm_pointer()
1335 static void snd_cmipci_silence_hack(struct cmipci *cm, struct cmipci_pcm *rec)  in snd_cmipci_silence_hack()  argument
1337 	struct snd_pcm_runtime *runtime = rec->substream->runtime;  in snd_cmipci_silence_hack()
1340 	if (rec->needs_silencing && runtime && runtime->dma_area) {  in snd_cmipci_silence_hack()
1343 		reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2;  in snd_cmipci_silence_hack()
1349 			set_dac_channels(cm, rec, 2);  in snd_cmipci_silence_hack()
1352 		val &= ~(CM_ASFC_MASK << (rec->ch * 3));  in snd_cmipci_silence_hack()
1353 		val |= (4 << CM_ASFC_SHIFT) << (rec->ch * 3);  in snd_cmipci_silence_hack()
1356 		val &= ~(CM_CH0FMT_MASK << (rec->ch * 2));  in snd_cmipci_silence_hack()
1357 		val |= (3 << CM_CH0FMT_SHIFT) << (rec->ch * 2);  in snd_cmipci_silence_hack()
1359 			val &= ~(CM_CH0_SRATE_MASK << (rec->ch * 2));  in snd_cmipci_silence_hack()
1363 		cm->ctrl |= CM_CHEN0 << rec->ch;  in snd_cmipci_silence_hack()
1371 		cm->ctrl &= ~(CM_CHEN0 << rec->ch);  in snd_cmipci_silence_hack()
1372 		val = CM_RST_CH0 << rec->ch;  in snd_cmipci_silence_hack()
1377 		rec->needs_silencing = 0;  in snd_cmipci_silence_hack()