diff options
Diffstat (limited to 'sound/soc/davinci')
-rw-r--r-- | sound/soc/davinci/Kconfig | 25 | ||||
-rw-r--r-- | sound/soc/davinci/Makefile | 2 | ||||
-rw-r--r-- | sound/soc/davinci/davinci-mcasp.c | 93 | ||||
-rw-r--r-- | sound/soc/davinci/edma-pcm.c | 2 | ||||
-rw-r--r-- | sound/soc/davinci/edma-pcm.h | 7 |
5 files changed, 114 insertions, 15 deletions
diff --git a/sound/soc/davinci/Kconfig b/sound/soc/davinci/Kconfig index 50a0987..d69510c 100644 --- a/sound/soc/davinci/Kconfig +++ b/sound/soc/davinci/Kconfig @@ -1,12 +1,29 @@ config SND_DAVINCI_SOC - tristate "SoC Audio for TI DAVINCI or AM33XX/AM43XX chips" - depends on ARCH_DAVINCI || SOC_AM33XX || SOC_AM43XX + tristate "SoC Audio for TI DAVINCI" + depends on ARCH_DAVINCI + +config SND_EDMA_SOC + tristate "SoC Audio for Texas Instruments chips using eDMA (AM33XX/43XX)" + depends on SOC_AM33XX || SOC_AM43XX + select SND_SOC_GENERIC_DMAENGINE_PCM + help + Say Y or M here if you want audio support for TI SoC which uses eDMA. + The following line of SoCs are supported by this platform driver: + - AM335x + - AM437x/AM438x config SND_DAVINCI_SOC_I2S tristate config SND_DAVINCI_SOC_MCASP - tristate + tristate "Multichannel Audio Serial Port (McASP) support" + depends on SND_DAVINCI_SOC || SND_OMAP_SOC || SND_EDMA_SOC + help + Say Y or M here if you want to have support for McASP IP found in + various Texas Instruments SoCs like: + - daVinci devices + - Sitara line of SoCs (AM335x, AM438x, etc) + - DRA7x devices config SND_DAVINCI_SOC_VCIF tristate @@ -18,7 +35,7 @@ config SND_DAVINCI_SOC_GENERIC_EVM config SND_AM33XX_SOC_EVM tristate "SoC Audio for the AM33XX chip based boards" - depends on SND_DAVINCI_SOC && SOC_AM33XX && I2C + depends on SND_EDMA_SOC && SOC_AM33XX && I2C select SND_DAVINCI_SOC_GENERIC_EVM help Say Y or M if you want to add support for SoC audio on AM33XX diff --git a/sound/soc/davinci/Makefile b/sound/soc/davinci/Makefile index 744d4d9..09bf2ba 100644 --- a/sound/soc/davinci/Makefile +++ b/sound/soc/davinci/Makefile @@ -1,10 +1,12 @@ # DAVINCI Platform Support snd-soc-davinci-objs := davinci-pcm.o +snd-soc-edma-objs := edma-pcm.o snd-soc-davinci-i2s-objs := davinci-i2s.o snd-soc-davinci-mcasp-objs:= davinci-mcasp.o snd-soc-davinci-vcif-objs:= davinci-vcif.o obj-$(CONFIG_SND_DAVINCI_SOC) += snd-soc-davinci.o +obj-$(CONFIG_SND_EDMA_SOC) += snd-soc-edma.o obj-$(CONFIG_SND_DAVINCI_SOC_I2S) += snd-soc-davinci-i2s.o obj-$(CONFIG_SND_DAVINCI_SOC_MCASP) += snd-soc-davinci-mcasp.o obj-$(CONFIG_SND_DAVINCI_SOC_VCIF) += snd-soc-davinci-vcif.o diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 9afb146..c28508d 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -27,6 +27,7 @@ #include <linux/of_platform.h> #include <linux/of_device.h> +#include <sound/asoundef.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -36,6 +37,7 @@ #include <sound/omap-pcm.h> #include "davinci-pcm.h" +#include "edma-pcm.h" #include "davinci-mcasp.h" #define MCASP_MAX_AFIFO_DEPTH 64 @@ -63,6 +65,7 @@ struct davinci_mcasp { u8 num_serializer; u8 *serial_dir; u8 version; + u8 bclk_div; u16 bclk_lrclk_ratio; int streams; @@ -417,6 +420,7 @@ static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div ACLKXDIV(div - 1), ACLKXDIV_MASK); mcasp_mod_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRDIV(div - 1), ACLKRDIV_MASK); + mcasp->bclk_div = div; break; case 2: /* BCLK/LRCLK ratio */ @@ -637,8 +641,12 @@ static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream) } /* S/PDIF */ -static int mcasp_dit_hw_param(struct davinci_mcasp *mcasp) +static int mcasp_dit_hw_param(struct davinci_mcasp *mcasp, + unsigned int rate) { + u32 cs_value = 0; + u8 *cs_bytes = (u8*) &cs_value; + /* Set the TX format : 24 bit right rotation, 32 bit slot, Pad 0 and LSB first */ mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXROT(6) | TXSSZ(15)); @@ -660,6 +668,46 @@ static int mcasp_dit_hw_param(struct davinci_mcasp *mcasp) /* Enable the DIT */ mcasp_set_bits(mcasp, DAVINCI_MCASP_TXDITCTL_REG, DITEN); + /* Set S/PDIF channel status bits */ + cs_bytes[0] = IEC958_AES0_CON_NOT_COPYRIGHT; + cs_bytes[1] = IEC958_AES1_CON_PCM_CODER; + + switch (rate) { + case 22050: + cs_bytes[3] |= IEC958_AES3_CON_FS_22050; + break; + case 24000: + cs_bytes[3] |= IEC958_AES3_CON_FS_24000; + break; + case 32000: + cs_bytes[3] |= IEC958_AES3_CON_FS_32000; + break; + case 44100: + cs_bytes[3] |= IEC958_AES3_CON_FS_44100; + break; + case 48000: + cs_bytes[3] |= IEC958_AES3_CON_FS_48000; + break; + case 88200: + cs_bytes[3] |= IEC958_AES3_CON_FS_88200; + break; + case 96000: + cs_bytes[3] |= IEC958_AES3_CON_FS_96000; + break; + case 176400: + cs_bytes[3] |= IEC958_AES3_CON_FS_176400; + break; + case 192000: + cs_bytes[3] |= IEC958_AES3_CON_FS_192000; + break; + default: + printk(KERN_WARNING "unsupported sampling rate: %d\n", rate); + return -EINVAL; + } + + mcasp_set_reg(mcasp, DAVINCI_MCASP_DITCSRA_REG, cs_value); + mcasp_set_reg(mcasp, DAVINCI_MCASP_DITCSRB_REG, cs_value); + return 0; } @@ -675,15 +723,22 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, int period_size = params_period_size(params); int ret; - /* If mcasp is BCLK master we need to set BCLK divider */ - if (mcasp->bclk_master) { + /* + * If mcasp is BCLK master, and a BCLK divider was not provided by + * the machine driver, we need to calculate the ratio. + */ + if (mcasp->bclk_master && mcasp->bclk_div == 0 && mcasp->sysclk_freq) { unsigned int bclk_freq = snd_soc_params_to_bclk(params); + unsigned int div = mcasp->sysclk_freq / bclk_freq; if (mcasp->sysclk_freq % bclk_freq != 0) { - dev_err(mcasp->dev, "Can't produce required BCLK\n"); - return -EINVAL; + if (((mcasp->sysclk_freq / div) - bclk_freq) > + (bclk_freq - (mcasp->sysclk_freq / (div+1)))) + div++; + dev_warn(mcasp->dev, + "Inaccurate BCLK: %u Hz / %u != %u Hz\n", + mcasp->sysclk_freq, div, bclk_freq); } - davinci_mcasp_set_clkdiv( - cpu_dai, 1, mcasp->sysclk_freq / bclk_freq); + davinci_mcasp_set_clkdiv(cpu_dai, 1, div); } ret = mcasp_common_hw_param(mcasp, substream->stream, @@ -692,7 +747,7 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, return ret; if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE) - ret = mcasp_dit_hw_param(mcasp); + ret = mcasp_dit_hw_param(mcasp, params_rate(params)); else ret = mcasp_i2s_hw_param(mcasp, substream->stream); @@ -720,6 +775,10 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, case SNDRV_PCM_FORMAT_U24_LE: case SNDRV_PCM_FORMAT_S24_LE: + dma_params->data_type = 4; + word_length = 24; + break; + case SNDRV_PCM_FORMAT_U32_LE: case SNDRV_PCM_FORMAT_S32_LE: dma_params->data_type = 4; @@ -778,7 +837,7 @@ static int davinci_mcasp_dai_probe(struct snd_soc_dai *dai) { struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); - if (mcasp->version == MCASP_VERSION_4) { + if (mcasp->version >= MCASP_VERSION_3) { /* Using dmaengine PCM */ dai->playback_dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK]; @@ -1223,14 +1282,28 @@ static int davinci_mcasp_probe(struct platform_device *pdev) goto err; switch (mcasp->version) { +#if IS_BUILTIN(CONFIG_SND_DAVINCI_SOC) || \ + (IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \ + IS_MODULE(CONFIG_SND_DAVINCI_SOC)) case MCASP_VERSION_1: case MCASP_VERSION_2: - case MCASP_VERSION_3: ret = davinci_soc_platform_register(&pdev->dev); break; +#endif +#if IS_BUILTIN(CONFIG_SND_EDMA_SOC) || \ + (IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \ + IS_MODULE(CONFIG_SND_EDMA_SOC)) + case MCASP_VERSION_3: + ret = edma_pcm_platform_register(&pdev->dev); + break; +#endif +#if IS_BUILTIN(CONFIG_SND_OMAP_SOC) || \ + (IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \ + IS_MODULE(CONFIG_SND_OMAP_SOC)) case MCASP_VERSION_4: ret = omap_pcm_platform_register(&pdev->dev); break; +#endif default: dev_err(&pdev->dev, "Invalid McASP version: %d\n", mcasp->version); diff --git a/sound/soc/davinci/edma-pcm.c b/sound/soc/davinci/edma-pcm.c index d38afb1..605e643 100644 --- a/sound/soc/davinci/edma-pcm.c +++ b/sound/soc/davinci/edma-pcm.c @@ -28,8 +28,8 @@ static const struct snd_pcm_hardware edma_pcm_hardware = { .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_BATCH | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_NO_PERIOD_WAKEUP | SNDRV_PCM_INFO_INTERLEAVED, .buffer_bytes_max = 128 * 1024, .period_bytes_min = 32, diff --git a/sound/soc/davinci/edma-pcm.h b/sound/soc/davinci/edma-pcm.h index 894c378..b095774 100644 --- a/sound/soc/davinci/edma-pcm.h +++ b/sound/soc/davinci/edma-pcm.h @@ -20,6 +20,13 @@ #ifndef __EDMA_PCM_H__ #define __EDMA_PCM_H__ +#if IS_ENABLED(CONFIG_SND_EDMA_SOC) int edma_pcm_platform_register(struct device *dev); +#else +static inline int edma_pcm_platform_register(struct device *dev) +{ + return 0; +} +#endif /* CONFIG_SND_EDMA_SOC */ #endif /* __EDMA_PCM_H__ */ |