Arun, We have tested mcbsp with alsa framework. your configuration seems correct. As far as configuratiosn are concerned, you are trying to play 16 bit audio data in stereo mode. As I havent seen the twl4030 audio code, I cannot comment on that. Regards Chandra Shekhar > -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx > [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Arun K S > Sent: Wednesday, January 16, 2008 9:07 PM > To: linux-omap@xxxxxxxxxxxxxxx > Subject: issue with TWL3040 audio driver > > Hi, > > I am working on OSS audio dirver on linux-2.6.22 with > OMAP2430 based EVM from Mistral. I used the new mcbsp dirver > driver from > http://marc.info/?l=linux-omap&m=119816615115863&w=2. TWL4030 > is my codec, which is a master. I have changed my twl4030 > codec driver accordingly and got the audio working, but the > audio play is not continuous. Audio breaks (and there is some > noise). Has anybody on the list faced this issue. Please see > if you can help me with some suggestions. > > I am also wondering if there are any issues due to the new > mcbsp driver. > > The values assigned for mcbsp structures are : > > static struct omap_mcbsp_cfg_param plat_omap_mcbsp_config_rx_param = { > > #ifdef TWL_MASTER > .clk_mode = OMAP_MCBSP_CLKRXSRC_EXTERNAL, > .fsync_src = OMAP_MCBSP_RXFSYNC_EXTERNAL, > > #else > .clk_mode = OMAP_MCBSP_CLKRXSRC_INTERNAL, > .fsync_src = OMAP_MCBSP_RXFSYNC_INTERNAL, #endif > .fs_polarity = OMAP_MCBSP_FS_ACTIVE_HIGH, > .clk_polarity = OMAP_MCBSP_CLKR_POLARITY_RISING, > .phase = OMAP_MCBSP_FRAME_SINGLEPHASE, > .data_delay = OMAP_MCBSP_DATADELAY1, > .reverse_compand = OMAP_MCBSP_MSBFIRST, > .word_length1 = OMAP_MCBSP_WORD_32, > .frame_length1 = OMAP_MCBSP_FRAMELEN_N(1), > .justification = OMAP_MCBSP_RJUST_ZEROMSB }; > > static struct omap_mcbsp_cfg_param > plat_omap_mcbsp_config_tx_param = { #ifdef TWL_MASTER > .clk_mode = OMAP_MCBSP_CLKTXSRC_EXTERNAL, > .fsync_src = OMAP_MCBSP_TXFSYNC_EXTERNAL, #else > .clk_mode = OMAP_MCBSP_CLKTXSRC_INTERNAL, > .fsync_src = OMAP_MCBSP_TXFSYNC_INTERNAL, #endif > .fs_polarity = OMAP_MCBSP_FS_ACTIVE_HIGH, > .clk_polarity = OMAP_MCBSP_CLKX_POLARITY_RISING, > .phase = OMAP_MCBSP_FRAME_SINGLEPHASE, > .data_delay = OMAP_MCBSP_DATADELAY1, > .reverse_compand = OMAP_MCBSP_MSBFIRST, > .word_length1 = OMAP_MCBSP_WORD_32, > .frame_length1 = OMAP_MCBSP_FRAMELEN_N(1), > .justification = OMAP_MCBSP_RJUST_ZEROMSB, }; > > static struct omap_mcbsp_srg_fsg_cfg plat_omap_mcbsp_srg_fsg_cfg = { > > .srg_src = OMAP_MCBSP_SRGCLKSRC_CLKX, > #ifdef TWL_MASTER > .sync_mode = OMAP_MCBSP_SRG_FREERUNNING, #elif > .sync_mode = OMAP_MCBSP_SRG_RUNNING, #endif > .polarity = OMAP_MCBSP_CLKX_POLARITY_FALLING, > .sample_rate = AUDIO_RATE_DEFAULT, > .bits_per_sample = AUDIO_SAMPLE_DATA_WIDTH_16 }; > > static struct omap_mcbsp_dma_transfer_params > plat_omap_mcbsp_dma_tx_transfer_params = { > .skip_alt = OMAP_MCBSP_SKIP_NONE, > .auto_reset = OMAP_MCBSP_AUTO_XRST, > .callback = twl4030_mcbsp_dma_cb, > .word_length1 = OMAP_MCBSP_WORD_32 }; > static struct omap_mcbsp_dma_transfer_params > plat_omap_mcbsp_dma_rx_transfer_params = { > .skip_alt = OMAP_MCBSP_SKIP_NONE, > .auto_reset = OMAP_MCBSP_AUTO_RRST, > .callback = twl4030_mcbsp_dma_cb, > .word_length1 = OMAP_MCBSP_WORD_32 }; > > Thank in advance > Arun K S > > -------------------------------------------------------DISCLAI > MER------------------------------------------------------ > The information transmitted herewith is confidential and > proprietary information intended only for use by the > individual or entity to which it is addressed. If the reader > of this message is not the intended recipient, you are hereby > notified that any review, retransmission, dissemination, > distribution, copying or other use of, or taking of any > action in reliance upon this information is strictly > prohibited. If you have received this communication in error, > please contact the sender and delete the material from your computer. > -------------------------------------------------------------- > ------------------------------------------------------------------ > > > - > To unsubscribe from this list: send the line "unsubscribe > linux-omap" in the body of a message to > majordomo@xxxxxxxxxxxxxxx More majordomo info at > http://vger.kernel.org/majordomo-info.html > > - To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
