diff options
Diffstat (limited to 'sound/soc/fsl')
| -rw-r--r-- | sound/soc/fsl/Kconfig | 27 | ||||
| -rw-r--r-- | sound/soc/fsl/Makefile | 11 | ||||
| -rw-r--r-- | sound/soc/fsl/efika-audio-fabric.c | 20 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_dma.c | 458 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_dma.h | 20 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_ssi.c | 298 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_ssi.h | 26 | ||||
| -rw-r--r-- | sound/soc/fsl/mpc5200_dma.c | 66 | ||||
| -rw-r--r-- | sound/soc/fsl/mpc5200_dma.h | 5 | ||||
| -rw-r--r-- | sound/soc/fsl/mpc5200_psc_ac97.c | 34 | ||||
| -rw-r--r-- | sound/soc/fsl/mpc5200_psc_ac97.h | 2 | ||||
| -rw-r--r-- | sound/soc/fsl/mpc5200_psc_i2s.c | 19 | ||||
| -rw-r--r-- | sound/soc/fsl/mpc8610_hpcd.c | 660 | ||||
| -rw-r--r-- | sound/soc/fsl/p1022_ds.c | 591 | ||||
| -rw-r--r-- | sound/soc/fsl/pcm030-audio-fabric.c | 21 | ||||
| -rw-r--r-- | sound/soc/fsl/soc-of-simple.c | 172 |
16 files changed, 1486 insertions, 944 deletions
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index 8cb65cc..d754d34 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -1,27 +1,36 @@ -config SND_SOC_OF_SIMPLE - tristate - config SND_MPC52xx_DMA tristate -# ASoC platform support for the Freescale MPC8610 SOC. This compiles drivers -# for the SSI and the Elo DMA controller. You will still need to select -# a platform driver and a codec driver. -config SND_SOC_MPC8610 +# ASoC platform support for the Freescale PowerPC SOCs that have an SSI and +# an Elo DMA controller, such as the MPC8610 and P1022. You will still need to +# select a platform driver and a codec driver. +config SND_SOC_POWERPC_SSI tristate - depends on MPC8610 + depends on FSL_SOC config SND_SOC_MPC8610_HPCD tristate "ALSA SoC support for the Freescale MPC8610 HPCD board" # I2C is necessary for the CS4270 driver depends on MPC8610_HPCD && I2C - select SND_SOC_MPC8610 + select SND_SOC_POWERPC_SSI select SND_SOC_CS4270 select SND_SOC_CS4270_VD33_ERRATA default y if MPC8610_HPCD help Say Y if you want to enable audio on the Freescale MPC8610 HPCD. +config SND_SOC_P1022_DS + tristate "ALSA SoC support for the Freescale P1022 DS board" + # I2C is necessary for the WM8776 driver + depends on P1022_DS && I2C + select SND_SOC_POWERPC_SSI + select SND_SOC_WM8776 + default y if P1022_DS + help + Say Y if you want to enable audio on the Freescale P1022 DS board. + This will also include the Wolfson Microelectronics WM8776 codec + driver. + config SND_SOC_MPC5200_I2S tristate "Freescale MPC5200 PSC in I2S mode driver" depends on PPC_MPC52xx && PPC_BESTCOMM diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile index a83a739..b4a38c0 100644 --- a/sound/soc/fsl/Makefile +++ b/sound/soc/fsl/Makefile @@ -1,14 +1,15 @@ -# Simple machine driver that extracts configuration from the OF device tree -obj-$(CONFIG_SND_SOC_OF_SIMPLE) += soc-of-simple.o - # MPC8610 HPCD Machine Support snd-soc-mpc8610-hpcd-objs := mpc8610_hpcd.o obj-$(CONFIG_SND_SOC_MPC8610_HPCD) += snd-soc-mpc8610-hpcd.o -# MPC8610 Platform Support +# P1022 DS Machine Support +snd-soc-p1022-ds-objs := p1022_ds.o +obj-$(CONFIG_SND_SOC_P1022_DS) += snd-soc-p1022-ds.o + +# Freescale PowerPC SSI/DMA Platform Support snd-soc-fsl-ssi-objs := fsl_ssi.o snd-soc-fsl-dma-objs := fsl_dma.o -obj-$(CONFIG_SND_SOC_MPC8610) += snd-soc-fsl-ssi.o snd-soc-fsl-dma.o +obj-$(CONFIG_SND_SOC_POWERPC_SSI) += snd-soc-fsl-ssi.o snd-soc-fsl-dma.o # MPC5200 Platform Support obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o diff --git a/sound/soc/fsl/efika-audio-fabric.c b/sound/soc/fsl/efika-audio-fabric.c index 1a5b8e0..53251e6 100644 --- a/sound/soc/fsl/efika-audio-fabric.c +++ b/sound/soc/fsl/efika-audio-fabric.c @@ -24,7 +24,6 @@ #include <sound/pcm_params.h> #include <sound/initval.h> #include <sound/soc.h> -#include <sound/soc-of-simple.h> #include "mpc5200_dma.h" #include "mpc5200_psc_ac97.h" @@ -32,21 +31,24 @@ #define DRV_NAME "efika-audio-fabric" -static struct snd_soc_device device; static struct snd_soc_card card; static struct snd_soc_dai_link efika_fabric_dai[] = { { .name = "AC97", .stream_name = "AC97 Analog", - .codec_dai = &stac9766_dai[STAC9766_DAI_AC97_ANALOG], - .cpu_dai = &psc_ac97_dai[MPC5200_AC97_NORMAL], + .codec_dai_name = "stac9766-hifi-analog", + .cpu_dai_name = "mpc5200-psc-ac97.0", + .platform_name = "mpc5200-pcm-audio", + .codec_name = "stac9766-codec", }, { .name = "AC97", .stream_name = "AC97 IEC958", - .codec_dai = &stac9766_dai[STAC9766_DAI_AC97_DIGITAL], - .cpu_dai = &psc_ac97_dai[MPC5200_AC97_SPDIF], + .codec_dai_name = "stac9766-hifi-IEC958", + .cpu_dai_name = "mpc5200-psc-ac97.1", + .platform_name = "mpc5200-pcm-audio", + .codec_name = "stac9766-codec", }, }; @@ -58,13 +60,10 @@ static __init int efika_fabric_init(void) if (!of_machine_is_compatible("bplan,efika")) return -ENODEV; - card.platform = &mpc5200_audio_dma_platform; card.name = "Efika"; card.dai_link = efika_fabric_dai; card.num_links = ARRAY_SIZE(efika_fabric_dai); - device.card = &card; - device.codec_dev = &soc_codec_dev_stac9766; pdev = platform_device_alloc("soc-audio", 1); if (!pdev) { @@ -72,8 +71,7 @@ static __init int efika_fabric_init(void) return -ENODEV; } - platform_set_drvdata(pdev, &device); - device.dev = &pdev->dev; + platform_set_drvdata(pdev, &card); rc = platform_device_add(pdev); if (rc) { diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c index 410c749..4cf98c0 100644 --- a/sound/soc/fsl/fsl_dma.c +++ b/sound/soc/fsl/fsl_dma.c @@ -3,10 +3,11 @@ * * Author: Timur Tabi <timur@freescale.com> * - * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed - * under the terms of the GNU General Public License version 2. This - * program is licensed "as is" without any warranty of any kind, whether - * express or implied. + * Copyright 2007-2010 Freescale Semiconductor, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. * * This driver implements ASoC support for the Elo DMA controller, which is * the DMA controller on Freescale 83xx, 85xx, and 86xx SOCs. In ALSA terms, @@ -20,6 +21,9 @@ #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/gfp.h> +#include <linux/of_platform.h> +#include <linux/list.h> +#include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h> @@ -29,6 +33,7 @@ #include <asm/io.h> #include "fsl_dma.h" +#include "fsl_ssi.h" /* For the offset of stx0 and srx0 */ /* * The formats that the DMA controller supports, which is anything @@ -52,26 +57,16 @@ #define FSLDMA_PCM_RATES (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_192000 | \ SNDRV_PCM_RATE_CONTINUOUS) -/* DMA global data. This structure is used by fsl_dma_open() to determine - * which DMA channels to assign to a substream. Unfortunately, ASoC V1 does - * not allow the machine driver to provide this information to the PCM - * driver in advance, and there's no way to differentiate between the two - * DMA controllers. So for now, this driver only supports one SSI device - * using two DMA channels. We cannot support multiple DMA devices. - * - * ssi_stx_phys: bus address of SSI STX register - * ssi_srx_phys: bus address of SSI SRX register - * dma_channel: pointer to the DMA channel's registers - * irq: IRQ for this DMA channel - * assigned: set to 1 if that DMA channel is assigned to a substream - */ -static struct { +struct dma_object { + struct snd_soc_platform_driver dai; dma_addr_t ssi_stx_phys; dma_addr_t ssi_srx_phys; - struct ccsr_dma_channel __iomem *dma_channel[2]; - unsigned int irq[2]; - unsigned int assigned[2]; -} dma_global_data; + unsigned int ssi_fifo_depth; + struct ccsr_dma_channel __iomem *channel; + unsigned int irq; + bool assigned; + char path[1]; +}; /* * The number of DMA links to use. Two is the bare minimum, but if you @@ -88,8 +83,6 @@ static struct { * structure. * * @link[]: array of link descriptors - * @controller_id: which DMA controller (0, 1, ...) - * @channel_id: which DMA channel on the controller (0, 1, 2, ...) * @dma_channel: pointer to the DMA channel's registers * @irq: IRQ for this DMA channel * @substream: pointer to the substream object, needed by the ISR @@ -104,12 +97,11 @@ static struct { */ struct fsl_dma_private { struct fsl_dma_link_descriptor link[NUM_DMA_LINKS]; - unsigned int controller_id; - unsigned int channel_id; struct ccsr_dma_channel __iomem *dma_channel; unsigned int irq; struct snd_pcm_substream *substream; dma_addr_t ssi_sxx_phys; + unsigned int ssi_fifo_depth; dma_addr_t ld_buf_phys; unsigned int current_link; dma_addr_t dma_buf_phys; @@ -185,13 +177,23 @@ static void fsl_dma_update_pointers(struct fsl_dma_private *dma_private) struct fsl_dma_link_descriptor *link = &dma_private->link[dma_private->current_link]; - /* Update our link descriptors to point to the next period */ - if (dma_private->substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - link->source_addr = - cpu_to_be32(dma_private->dma_buf_next); - else - link->dest_addr = - cpu_to_be32(dma_private->dma_buf_next); + /* Update our link descriptors to point to the next period. On a 36-bit + * system, we also need to update the ESAD bits. We also set (keep) the + * snoop bits. See the comments in fsl_dma_hw_params() about snooping. + */ + if (dma_private->substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + link->source_addr = cpu_to_be32(dma_private->dma_buf_next); +#ifdef CONFIG_PHYS_64BIT + link->source_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP | + upper_32_bits(dma_private->dma_buf_next)); +#endif + } else { + link->dest_addr = cpu_to_be32(dma_private->dma_buf_next); +#ifdef CONFIG_PHYS_64BIT + link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP | + upper_32_bits(dma_private->dma_buf_next)); +#endif + } /* Update our variables for next time */ dma_private->dma_buf_next += dma_private->period_size; @@ -212,6 +214,9 @@ static void fsl_dma_update_pointers(struct fsl_dma_private *dma_private) static irqreturn_t fsl_dma_isr(int irq, void *dev_id) { struct fsl_dma_private *dma_private = dev_id; + struct snd_pcm_substream *substream = dma_private->substream; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct device *dev = rtd->platform->dev; struct ccsr_dma_channel __iomem *dma_channel = dma_private->dma_channel; irqreturn_t ret = IRQ_NONE; u32 sr, sr2 = 0; @@ -222,11 +227,8 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id) sr = in_be32(&dma_channel->sr); if (sr & CCSR_DMA_SR_TE) { - dev_err(dma_private->substream->pcm->card->dev, - "DMA transmit error (controller=%u channel=%u irq=%u\n", - dma_private->controller_id, - dma_private->channel_id, irq); - fsl_dma_abort_stream(dma_private->substream); + dev_err(dev, "dma transmit error\n"); + fsl_dma_abort_stream(substream); sr2 |= CCSR_DMA_SR_TE; ret = IRQ_HANDLED; } @@ -235,11 +237,8 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id) ret = IRQ_HANDLED; if (sr & CCSR_DMA_SR_PE) { - dev_err(dma_private->substream->pcm->card->dev, - "DMA%u programming error (channel=%u irq=%u)\n", - dma_private->controller_id, - dma_private->channel_id, irq); - fsl_dma_abort_stream(dma_private->substream); + dev_err(dev, "dma programming error\n"); + fsl_dma_abort_stream(substream); sr2 |= CCSR_DMA_SR_PE; ret = IRQ_HANDLED; } @@ -253,8 +252,6 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id) ret = IRQ_HANDLED; if (sr & CCSR_DMA_SR_EOSI) { - struct snd_pcm_substream *substream = dma_private->substream; - /* Tell ALSA we completed a period. */ snd_pcm_period_elapsed(substream); @@ -288,11 +285,19 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id) * This function is called when the codec driver calls snd_soc_new_pcms(), * once for each .dai_link in the machine driver's snd_soc_card * structure. + * + * snd_dma_alloc_pages() is just a front-end to dma_alloc_coherent(), which + * (currently) always allocates the DMA buffer in lowmem, even if GFP_HIGHMEM + * is specified. Therefore, any DMA buffers we allocate will always be in low + * memory, but we support for 36-bit physical addresses anyway. + * + * Regardless of where the memory is actually allocated, since the device can + * technically DMA to any 36-bit address, we do need to set the DMA mask to 36. */ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai, struct snd_pcm *pcm) { - static u64 fsl_dma_dmamask = DMA_BIT_MASK(32); + static u64 fsl_dma_dmamask = DMA_BIT_MASK(36); int ret; if (!card->dev->dma_mask) @@ -301,25 +306,29 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai, if (!card->dev->coherent_dma_mask) card->dev->coherent_dma_mask = fsl_dma_dmamask; - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, - fsl_dma_hardware.buffer_bytes_max, - &pcm->streams[0].substream->dma_buffer); - if (ret) { - dev_err(card->dev, - "Can't allocate playback DMA buffer (size=%u)\n", - fsl_dma_hardware.buffer_bytes_max); - return -ENOMEM; + /* Some codecs have separate DAIs for playback and capture, so we + * should allocate a DMA buffer only for the streams that are valid. + */ + + if (dai->driver->playback.channels_min) { + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, + fsl_dma_hardware.buffer_bytes_max, + &pcm->streams[0].substream->dma_buffer); + if (ret) { + dev_err(card->dev, "can't alloc playback dma buffer\n"); + return ret; + } } - ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, - fsl_dma_hardware.buffer_bytes_max, - &pcm->streams[1].substream->dma_buffer); - if (ret) { - snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer); - dev_err(card->dev, - "Can't allocate capture DMA buffer (size=%u)\n", - fsl_dma_hardware.buffer_bytes_max); - return -ENOMEM; + if (dai->driver->capture.channels_min) { + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev, + fsl_dma_hardware.buffer_bytes_max, + &pcm->streams[1].substream->dma_buffer); + if (ret) { + snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer); + dev_err(card->dev, "can't alloc capture dma buffer\n"); + return ret; + } } return 0; @@ -390,6 +399,10 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai, static int fsl_dma_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct device *dev = rtd->platform->dev; + struct dma_object *dma = + container_of(rtd->platform->driver, struct dma_object, dai); struct fsl_dma_private *dma_private; struct ccsr_dma_channel __iomem *dma_channel; dma_addr_t ld_buf_phys; @@ -407,52 +420,45 @@ static int fsl_dma_open(struct snd_pcm_substream *substream) ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); if (ret < 0) { - dev_err(substream->pcm->card->dev, "invalid buffer size\n"); + dev_err(dev, "invalid buffer size\n"); return ret; } channel = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1; - if (dma_global_data.assigned[channel]) { - dev_err(substream->pcm->card->dev, - "DMA channel already assigned\n"); + if (dma->assigned) { + dev_err(dev, "dma channel already assigned\n"); return -EBUSY; } - dma_private = dma_alloc_coherent(substream->pcm->card->dev, - sizeof(struct fsl_dma_private), &ld_buf_phys, GFP_KERNEL); + dma_private = dma_alloc_coherent(dev, sizeof(struct fsl_dma_private), + &ld_buf_phys, GFP_KERNEL); if (!dma_private) { - dev_err(substream->pcm->card->dev, - "can't allocate DMA private data\n"); + dev_err(dev, "can't allocate dma private data\n"); return -ENOMEM; } if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - dma_private->ssi_sxx_phys = dma_global_data.ssi_stx_phys; + dma_private->ssi_sxx_phys = dma->ssi_stx_phys; else - dma_private->ssi_sxx_phys = dma_global_data.ssi_srx_phys; + dma_private->ssi_sxx_phys = dma->ssi_srx_phys; - dma_private->dma_channel = dma_global_data.dma_channel[channel]; - dma_private->irq = dma_global_data.irq[channel]; + dma_private->ssi_fifo_depth = dma->ssi_fifo_depth; + dma_private->dma_channel = dma->channel; + dma_private->irq = dma->irq; dma_private->substream = substream; dma_private->ld_buf_phys = ld_buf_phys; dma_private->dma_buf_phys = substream->dma_buffer.addr; - /* We only support one DMA controller for now */ - dma_private->controller_id = 0; - dma_private->channel_id = channel; - ret = request_irq(dma_private->irq, fsl_dma_isr, 0, "DMA", dma_private); if (ret) { - dev_err(substream->pcm->card->dev, - "can't register ISR for IRQ %u (ret=%i)\n", + dev_err(dev, "can't register ISR for IRQ %u (ret=%i)\n", dma_private->irq, ret); - dma_free_coherent(substream->pcm->card->dev, - sizeof(struct fsl_dma_private), + dma_free_coherent(dev, sizeof(struct fsl_dma_private), dma_private, dma_private->ld_buf_phys); return ret; } - dma_global_data.assigned[channel] = 1; + dma->assigned = 1; snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); snd_soc_set_runtime_hwparams(substream, &fsl_dma_hardware); @@ -546,13 +552,15 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream, { struct snd_pcm_runtime *runtime = substream->runtime; struct fsl_dma_private *dma_private = runtime->private_data; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct device *dev = rtd->platform->dev; /* Number of bits per sample */ - unsigned int sample_size = + unsigned int sample_bits = snd_pcm_format_physical_width(params_format(hw_params)); /* Number of bytes per frame */ - unsigned int frame_size = 2 * (sample_size / 8); + unsigned int sample_bytes = sample_bits / 8; /* Bus address of SSI STX register */ dma_addr_t ssi_sxx_phys = dma_private->ssi_sxx_phys; @@ -592,7 +600,7 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream, * that offset here. While we're at it, also tell the DMA controller * how much data to transfer per sample. */ - switch (sample_size) { + switch (sample_bits) { case 8: mr |= CCSR_DMA_MR_DAHTS_1 | CCSR_DMA_MR_SAHTS_1; ssi_sxx_phys += 3; @@ -606,23 +614,42 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream, break; default: /* We should never get here */ - dev_err(substream->pcm->card->dev, - "unsupported sample size %u\n", sample_size); + dev_err(dev, "unsupported sample size %u\n", sample_bits); return -EINVAL; } /* - * BWC should always be a multiple of the frame size. BWC determines - * how many bytes are sent/received before the DMA controller checks the - * SSI to see if it needs to stop. For playback, the transmit FIFO can - * hold three frames, so we want to send two frames at a time. For - * capture, the receive FIFO is triggered when it contains one frame, so - * we want to receive one frame at a time. + * BWC determines how many bytes are sent/received before the DMA + * controller checks the SSI to see if it needs to stop. BWC should + * always be a multiple of the frame size, so that we always transmit + * whole frames. Each frame occupies two slots in the FIFO. The + * parameter for CCSR_DMA_MR_BWC() is rounded down the next power of two + * (MR[BWC] can only represent even powers of two). + * + * To simplify the process, we set BWC to the largest value that is + * less than or equal to the FIFO watermark. For playback, this ensures + * that we transfer the maximum amount without overrunning the FIFO. + * For capture, this ensures that we transfer the maximum amount without + * underrunning the FIFO. + * + * f = SSI FIFO depth + * w = SSI watermark value (which equals f - 2) + * b = DMA bandwidth count (in bytes) + * s = sample size (in bytes, which equals frame_size * 2) + * + * For playback, we never transmit more than the transmit FIFO + * watermark, otherwise we might write more data than the FIFO can hold. + * The watermark is equal to the FIFO depth minus two. + * + * For capture, two equations must hold: + * w > f - (b / s) + * w >= b / s + * + * So, b > 2 * s, but b must also be <= s * w. To simplify, we set + * b = s * w, which is equal to + * (dma_private->ssi_fifo_depth - 2) * sample_bytes. */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - mr |= CCSR_DMA_MR_BWC(2 * frame_size); - else - mr |= CCSR_DMA_MR_BWC(frame_size); + mr |= CCSR_DMA_MR_BWC((dma_private->ssi_fifo_depth - 2) * sample_bytes); out_be32(&dma_channel->mr, mr); @@ -631,12 +658,7 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream, link->count = cpu_to_be32(period_size); - /* Even though the DMA controller supports 36-bit addressing, - * for simplicity we allow only 32-bit addresses for the audio - * buffer itself. This was enforced in fsl_dma_new() with the - * DMA mask. - * - * The snoop bit tells the DMA controller whether it should tell + /* The snoop bit tells the DMA controller whether it should tell * the ECM to snoop during a read or write to an address. For * audio, we use DMA to transfer data between memory and an I/O * device (the SSI's STX0 or SRX0 register). Snooping is only @@ -651,20 +673,24 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream, * flush out the data for the previous period. So if you * increased period_bytes_min to a large enough size, you might * get more performance by not snooping, and you'll still be - * okay. + * okay. You'll need to update fsl_dma_update_pointers() also. */ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { link->source_addr = cpu_to_be32(temp_addr); - link->source_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP); + link->source_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP | + upper_32_bits(temp_addr)); link->dest_addr = cpu_to_be32(ssi_sxx_phys); - link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP); + link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP | + upper_32_bits(ssi_sxx_phys)); } else { link->source_addr = cpu_to_be32(ssi_sxx_phys); - link->source_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP); + link->source_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP | + upper_32_bits(ssi_sxx_phys)); link->dest_addr = cpu_to_be32(temp_addr); - link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP); + link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP | + upper_32_bits(temp_addr)); } temp_addr += period_size; @@ -689,14 +715,29 @@ static snd_pcm_uframes_t fsl_dma_pointer(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct fsl_dma_private *dma_private = runtime->private_data; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct device *dev = rtd->platform->dev; struct ccsr_dma_channel __iomem *dma_channel = dma_private->dma_channel; dma_addr_t position; snd_pcm_uframes_t frames; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + /* Obtain the current DMA pointer, but don't read the ESAD bits if we + * only have 32-bit DMA addresses. This function is typically called + * in interrupt context, so we need to optimize it. + */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { position = in_be32(&dma_channel->sar); - else +#ifdef CONFIG_PHYS_64BIT + position |= (u64)(in_be32(&dma_channel->satr) & + CCSR_DMA_ATR_ESAD_MASK) << 32; +#endif + } else { position = in_be32(&dma_channel->dar); +#ifdef CONFIG_PHYS_64BIT + position |= (u64)(in_be32(&dma_channel->datr) & + CCSR_DMA_ATR_ESAD_MASK) << 32; +#endif + } /* * When capture is started, the SSI immediately starts to fill its FIFO. @@ -710,8 +751,7 @@ static snd_pcm_uframes_t fsl_dma_pointer(struct snd_pcm_substream *substream) if ((position < dma_private->dma_buf_phys) || (position > dma_private->dma_buf_end)) { - dev_err(substream->pcm->card->dev, - "dma pointer is out of range, halting stream\n"); + dev_err(dev, "dma pointer is out of range, halting stream\n"); return SNDRV_PCM_POS_XRUN; } @@ -772,26 +812,28 @@ static int fsl_dma_close(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct fsl_dma_private *dma_private = runtime->private_data; - int dir = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct device *dev = rtd->platform->dev; + struct dma_object *dma = + container_of(rtd->platform->driver, struct dma_object, dai); if (dma_private) { if (dma_private->irq) free_irq(dma_private->irq, dma_private); if (dma_private->ld_buf_phys) { - dma_unmap_single(substream->pcm->card->dev, - dma_private->ld_buf_phys, - sizeof(dma_private->link), DMA_TO_DEVICE); + dma_unmap_single(dev, dma_private->ld_buf_phys, + sizeof(dma_private->link), + DMA_TO_DEVICE); } /* Deallocate the fsl_dma_private structure */ - dma_free_coherent(substream->pcm->card->dev, - sizeof(struct fsl_dma_private), - dma_private, dma_private->ld_buf_phys); + dma_free_coherent(dev, sizeof(struct fsl_dma_private), + dma_private, dma_private->ld_buf_phys); substream->runtime->private_data = NULL; } - dma_global_data.assigned[dir] = 0; + dma->assigned = 0; return 0; } @@ -814,6 +856,37 @@ static void fsl_dma_free_dma_buffers(struct snd_pcm *pcm) } } +/** + * find_ssi_node -- returns the SSI node that points to his DMA channel node + * + * Although this DMA driver attempts to operate independently of the other + * devices, it still needs to determine some information about the SSI device + * that it's working with. Unfortunately, the device tree does not contain + * a pointer from the DMA channel node to the SSI node -- the pointer goes the + * other way. So we need to scan the device tree for SSI nodes until we find + * the one that points to the given DMA channel node. It's ugly, but at least + * it's contained in this one function. + */ +static struct device_node *find_ssi_node(struct device_node *dma_channel_np) +{ + struct device_node *ssi_np, *np; + + for_each_compatible_node(ssi_np, NULL, "fsl,mpc8610-ssi") { + /* Check each DMA phandle to see if it points to us. We + * assume that device_node pointers are a valid comparison. + */ + np = of_parse_phandle(ssi_np, "fsl,playback-dma", 0); + if (np == dma_channel_np) + return ssi_np; + + np = of_parse_phandle(ssi_np, "fsl,capture-dma", 0); + if (np == dma_channel_np) + return ssi_np; + } + + return NULL; +} + static struct snd_pcm_ops fsl_dma_ops = { .open = fsl_dma_open, .close = fsl_dma_close, @@ -823,59 +896,114 @@ static struct snd_pcm_ops fsl_dma_ops = { .pointer = fsl_dma_pointer, }; -struct snd_soc_platform fsl_soc_platform = { - .name = "fsl-dma", - .pcm_ops = &fsl_dma_ops, - .pcm_new = fsl_dma_new, - .pcm_free = fsl_dma_free_dma_buffers, -}; -EXPORT_SYMBOL_GPL(fsl_soc_platform); +static int __devinit fsl_soc_dma_probe(struct platform_device *pdev, + const struct of_device_id *match) + { + struct dma_object *dma; + struct device_node *np = pdev->dev.of_node; + struct device_node *ssi_np; + struct resource res; + const uint32_t *iprop; + int ret; -/** - * fsl_dma_configure: store the DMA parameters from the fabric driver. - * - * This function is called by the ASoC fabric driver to give us the DMA and - * SSI channel information. - * - * Unfortunately, ASoC V1 does make it possible to determine the DMA/SSI - * data when a substream is created, so for now we need to store this data - * into a global variable. This means that we can only support one DMA - * controller, and hence only one SSI. - */ -int fsl_dma_configure(struct fsl_dma_info *dma_info) + /* Find the SSI node that points to us. */ + ssi_np = find_ssi_node(np); + if (!ssi_np) { + dev_err(&pdev->dev, "cannot find parent SSI node\n"); + return -ENODEV; + } + + ret = of_address_to_resource(ssi_np, 0, &res); + if (ret) { + dev_err(&pdev->dev, "could not determine resources for %s\n", + ssi_np->full_name); + of_node_put(ssi_np); + return ret; + } + + dma = kzalloc(sizeof(*dma) + strlen(np->full_name), GFP_KERNEL); + if (!dma) { + dev_err(&pdev->dev, "could not allocate dma object\n"); + of_node_put(ssi_np); + return -ENOMEM; + } + + strcpy(dma->path, np->full_name); + dma->dai.ops = &fsl_dma_ops; + dma->dai.pcm_new = fsl_dma_new; + dma->dai.pcm_free = fsl_dma_free_dma_buffers; + + /* Store the SSI-specific information that we need */ + dma->ssi_stx_phys = res.start + offsetof(struct ccsr_ssi, stx0); + dma->ssi_srx_phys = res.start + offsetof(struct ccsr_ssi, srx0); + + iprop = of_get_property(ssi_np, "fsl,fifo-depth", NULL); + if (iprop) + dma->ssi_fifo_depth = *iprop; + else + /* Older 8610 DTs didn't have the fifo-depth property */ + dma->ssi_fifo_depth = 8; + + of_node_put(ssi_np); + + ret = snd_soc_register_platform(&pdev->dev, &dma->dai); + if (ret) { + dev_err(&pdev->dev, "could not register platform\n"); + kfree(dma); + return ret; + } + + dma->channel = of_iomap(np, 0); + dma->irq = irq_of_parse_and_map(np, 0); + + dev_set_drvdata(&pdev->dev, dma); + + return 0; +} + +static int __devexit fsl_soc_dma_remove(struct platform_device *pdev) { - static int initialized; + struct dma_object *dma = dev_get_drvdata(&pdev->dev); - /* We only support one DMA controller for now */ - if (initialized) - return 0; + snd_soc_unregister_platform(&pdev->dev); + iounmap(dma->channel); + irq_dispose_mapping(dma->irq); + kfree(dma); - dma_global_data.ssi_stx_phys = dma_info->ssi_stx_phys; - dma_global_data.ssi_srx_phys = dma_info->ssi_srx_phys; - dma_global_data.dma_channel[0] = dma_info->dma_channel[0]; - dma_global_data.dma_channel[1] = dma_info->dma_channel[1]; - dma_global_data.irq[0] = dma_info->dma_irq[0]; - dma_global_data.irq[1] = dma_info->dma_irq[1]; - dma_global_data.assigned[0] = 0; - dma_global_data.assigned[1] = 0; - - initialized = 1; - return 1; + return 0; } -EXPORT_SYMBOL_GPL(fsl_dma_configure); -static int __init fsl_soc_platform_init(void) +static const struct of_device_id fsl_soc_dma_ids[] = { + { .compatible = "fsl,ssi-dma-channel", }, + {} +}; +MODULE_DEVICE_TABLE(of, fsl_soc_dma_ids); + +static struct of_platform_driver fsl_soc_dma_driver = { + .driver = { + .name = "fsl-pcm-audio", + .owner = THIS_MODULE, + .of_match_table = fsl_soc_dma_ids, + }, + .probe = fsl_soc_dma_probe, + .remove = __devexit_p(fsl_soc_dma_remove), +}; + +static int __init fsl_soc_dma_init(void) { - return snd_soc_register_platform(&fsl_soc_platform); + pr_info("Freescale Elo DMA ASoC PCM Driver\n"); + + return of_register_platform_driver(&fsl_soc_dma_driver); } -module_init(fsl_soc_platform_init); -static void __exit fsl_soc_platform_exit(void) +static void __exit fsl_soc_dma_exit(void) { - snd_soc_unregister_platform(&fsl_soc_platform); + of_unregister_platform_driver(&fsl_soc_dma_driver); } -module_exit(fsl_soc_platform_exit); + +module_init(fsl_soc_dma_init); +module_exit(fsl_soc_dma_exit); MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); -MODULE_DESCRIPTION("Freescale Elo DMA ASoC PCM module"); -MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Freescale Elo DMA ASoC PCM Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/fsl/fsl_dma.h b/sound/soc/fsl/fsl_dma.h index 385d4a4..78fee97 100644 --- a/sound/soc/fsl/fsl_dma.h +++ b/sound/soc/fsl/fsl_dma.h @@ -126,24 +126,4 @@ struct fsl_dma_link_descriptor { u8 res[4]; /* Reserved */ } __attribute__ ((aligned(32), packed)); -/* DMA information needed to create a snd_soc_dai object - * - * ssi_stx_phys: bus address of SSI STX register to use - * ssi_srx_phys: bus address of SSI SRX register to use - * dma[0]: points to the DMA channel to use for playback - * dma[1]: points to the DMA channel to use for capture - * dma_irq[0]: IRQ of the DMA channel to use for playback - * dma_irq[1]: IRQ of the DMA channel to use for capture - */ -struct fsl_dma_info { - dma_addr_t ssi_stx_phys; - dma_addr_t ssi_srx_phys; - struct ccsr_dma_channel __iomem *dma_channel[2]; - unsigned int dma_irq[2]; -}; - -extern struct snd_soc_platform fsl_soc_platform; - -int fsl_dma_configure(struct fsl_dma_info *dma_info); - #endif diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 762c1b8..4cc167a 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -3,10 +3,11 @@ * * Author: Timur Tabi <timur@freescale.com> * - * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed - * under the terms of the GNU General Public License version 2. This - * program is licensed "as is" without any warranty of any kind, whether - * express or implied. + * Copyright 2007-2010 Freescale Semiconductor, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. */ #include <linux/init.h> @@ -15,6 +16,7 @@ #include <linux/device.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/of_platform.h> #include <sound/core.h> #include <sound/pcm.h> @@ -22,8 +24,6 @@ #include <sound/initval.h> #include <sound/soc.h> -#include <asm/immap_86xx.h> - #include "fsl_ssi.h" /** @@ -71,33 +71,32 @@ /** * fsl_ssi_private: per-SSI private data * - * @name: short name for this device ("SSI0", "SSI1", etc) * @ssi: pointer to the SSI's registers * @ssi_phys: physical address of the SSI registers * @irq: IRQ of this SSI * @first_stream: pointer to the stream that was opened first * @second_stream: pointer to second stream - * @dev: struct device pointer * @playback: the number of playback streams opened * @capture: the number of capture streams opened * @asynchronous: 0=synchronous mode, 1=asynchronous mode * @cpu_dai: the CPU DAI for this device * @dev_attr: the sysfs device attribute structure * @stats: SSI statistics + * @name: name for this device */ struct fsl_ssi_private { - char name[8]; struct ccsr_ssi __iomem *ssi; dma_addr_t ssi_phys; unsigned int irq; struct snd_pcm_substream *first_stream; struct snd_pcm_substream *second_stream; - struct device *dev; unsigned int playback; unsigned int capture; int asynchronous; - struct snd_soc_dai cpu_dai; + unsigned int fifo_depth; + struct snd_soc_dai_driver cpu_dai_drv; struct device_attribute dev_attr; + struct platform_device *pdev; struct { unsigned int rfrc; @@ -122,6 +121,8 @@ struct fsl_ssi_private { unsigned int tfe1; unsigned int tfe0; } stats; + + char name[1]; }; /** @@ -280,7 +281,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = rtd->dai->cpu_dai->private_data; + struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai); /* * If this is the first stream opened, then request the IRQ @@ -290,6 +291,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, struct ccsr_ssi __iomem *ssi = ssi_private->ssi; int ret; + /* The 'name' should not have any slashes in it. */ ret = request_irq(ssi_private->irq, fsl_ssi_isr, 0, ssi_private->name, ssi_private); if (ret < 0) { @@ -336,11 +338,20 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, /* * Set the watermark for transmit FIFI 0 and receive FIFO 0. We - * don't use FIFO 1. Since the SSI only supports stereo, the - * watermark should never be an odd number. + * don't use FIFO 1. We program the transmit water to signal a + * DMA transfer if there are only two (or fewer) elements left + * in the FIFO. Two elements equals one frame (left channel, + * right channel). This value, however, depends on the depth of + * the transmit buffer. + * + * We program the receive FIFO to notify us if at least two + * elements (one frame) have been written to the FIFO. We could + * make this value larger (and maybe we should), but this way + * data will be written to memory as soon as it's available. */ out_be32(&ssi->sfcsr, - CCSR_SSI_SFCSR_TFWM0(6) | CCSR_SSI_SFCSR_RFWM0(2)); + CCSR_SSI_SFCSR_TFWM0(ssi_private->fifo_depth - 2) | + CCSR_SSI_SFCSR_RFWM0(ssi_private->fifo_depth - 2)); /* * We keep the SSI disabled because if we enable it, then the @@ -422,7 +433,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, static int fsl_ssi_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *cpu_dai) { - struct fsl_ssi_private *ssi_private = cpu_dai->private_data; + struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai); if (substream == ssi_private->first_stream) { struct ccsr_ssi __iomem *ssi = ssi_private->ssi; @@ -458,7 +469,7 @@ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = rtd->dai->cpu_dai->private_data; + struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai); struct ccsr_ssi __iomem *ssi = ssi_private->ssi; switch (cmd) { @@ -497,7 +508,7 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct fsl_ssi_private *ssi_private = rtd->dai->cpu_dai->private_data; + struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ssi_private->playback--; @@ -523,56 +534,15 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, } } -/** - * fsl_ssi_set_sysclk: set the clock frequency and direction - * - * This function is called by the machine driver to tell us what the clock - * frequency and direction are. - * - * Currently, we only support operating as a clock slave (SND_SOC_CLOCK_IN), - * and we don't care about the frequency. Return an error if the direction - * is not SND_SOC_CLOCK_IN. - * - * @clk_id: reserved, should be zero - * @freq: the frequency of the given clock ID, currently ignored - * @dir: SND_SOC_CLOCK_IN (clock slave) or SND_SOC_CLOCK_OUT (clock master) - */ -static int fsl_ssi_set_sysclk(struct snd_soc_dai *cpu_dai, - int clk_id, unsigned int freq, int dir) -{ - - return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL; -} - -/** - * fsl_ssi_set_fmt: set the serial format. - * - * This function is called by the machine driver to tell us what serial - * format to use. - * - * Currently, we only support I2S mode. Return an error if the format is - * not SND_SOC_DAIFMT_I2S. - * - * @format: one of SND_SOC_DAIFMT_xxx - */ -static int fsl_ssi_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format) -{ - return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL; -} - -/** - * fsl_ssi_dai_template: template CPU DAI for the SSI - */ static struct snd_soc_dai_ops fsl_ssi_dai_ops = { .startup = fsl_ssi_startup, .hw_params = fsl_ssi_hw_params, .shutdown = fsl_ssi_shutdown, .trigger = fsl_ssi_trigger, - .set_sysclk = fsl_ssi_set_sysclk, - .set_fmt = fsl_ssi_set_fmt, }; -static struct snd_soc_dai fsl_ssi_dai_template = { +/* Template for the CPU dai driver structure */ +static struct snd_soc_dai_driver fsl_ssi_dai_template = { .playback = { /* The SSI does not support monaural audio. */ .channels_min = 2, @@ -640,95 +610,195 @@ static ssize_t fsl_sysfs_ssi_show(struct device *dev, } /** - * fsl_ssi_create_dai: create a snd_soc_dai structure - * - * This function is called by the machine driver to create a snd_soc_dai - * structure. The function creates an ssi_private object, which contains - * the snd_soc_dai. It also creates the sysfs statistics device. + * Make every character in a string lower-case */ -struct snd_soc_dai *fsl_ssi_create_dai(struct fsl_ssi_info *ssi_info) +static void make_lowercase(char *s) +{ + char *p = s; + char c; + + while ((c = *p)) { + if ((c >= 'A') && (c <= 'Z')) + *p = c + ('a' - 'A'); + p++; + } +} + +static int __devinit fsl_ssi_probe(struct platform_device *pdev, + const struct of_device_id *match) { - struct snd_soc_dai *fsl_ssi_dai; struct fsl_ssi_private *ssi_private; int ret = 0; - struct device_attribute *dev_attr; + struct device_attribute *dev_attr = NULL; + struct device_node *np = pdev->dev.of_node; + const char *p, *sprop; + const uint32_t *iprop; + struct resource res; + char name[64]; + + /* SSIs that are not connected on the board should have a + * status = "disabled" + * property in their device tree nodes. + */ + if (!of_device_is_available(np)) + return -ENODEV; + + /* Check for a codec-handle property. */ + if (!of_get_property(np, "codec-handle", NULL)) { + dev_err(&pdev->dev, "missing codec-handle property\n"); + return -ENODEV; + } - ssi_private = kzalloc(sizeof(struct fsl_ssi_private), GFP_KERNEL); + /* We only support the SSI in "I2S Slave" mode */ + sprop = of_get_property(np, "fsl,mode", NULL); + if (!sprop || strcmp(sprop, "i2s-slave")) { + dev_notice(&pdev->dev, "mode %s is unsupported\n", sprop); + return -ENODEV; + } + + /* The DAI name is the last part of the full name of the node. */ + p = strrchr(np->full_name, '/') + 1; + ssi_private = kzalloc(sizeof(struct fsl_ssi_private) + strlen(p), + GFP_KERNEL); if (!ssi_private) { - dev_err(ssi_info->dev, "could not allocate DAI object\n"); - return NULL; + dev_err(&pdev->dev, "could not allocate DAI object\n"); + return -ENOMEM; } - memcpy(&ssi_private->cpu_dai, &fsl_ssi_dai_template, - sizeof(struct snd_soc_dai)); - fsl_ssi_dai = &ssi_private->cpu_dai; - dev_attr = &ssi_private->dev_attr; + strcpy(ssi_private->name, p); - sprintf(ssi_private->name, "ssi%u", (u8) ssi_info->id); - ssi_private->ssi = ssi_info->ssi; - ssi_private->ssi_phys = ssi_info->ssi_phys; - ssi_private->irq = ssi_info->irq; - ssi_private->dev = ssi_info->dev; - ssi_private->asynchronous = ssi_info->asynchronous; + /* Initialize this copy of the CPU DAI driver structure */ + memcpy(&ssi_private->cpu_dai_drv, &fsl_ssi_dai_template, + sizeof(fsl_ssi_dai_template)); + ssi_private->cpu_dai_drv.name = ssi_private->name; - dev_set_drvdata(ssi_private->dev, fsl_ssi_dai); + /* Get the addresses and IRQ */ + ret = of_address_to_resource(np, 0, &res); + if (ret) { + dev_err(&pdev->dev, "could not determine device resources\n"); + kfree(ssi_private); + return ret; + } + ssi_private->ssi = ioremap(res.start, 1 + res.end - res.start); + ssi_private->ssi_phys = res.start; + ssi_private->irq = irq_of_parse_and_map(np, 0); + + /* Are the RX and the TX clocks locked? */ + if (of_find_property(np, "fsl,ssi-asynchronous", NULL)) + ssi_private->asynchronous = 1; + else + ssi_private->cpu_dai_drv.symmetric_rates = 1; + + /* Determine the FIFO depth. */ + iprop = of_get_property(np, "fsl,fifo-depth", NULL); + if (iprop) + ssi_private->fifo_depth = *iprop; + else + /* Older 8610 DTs didn't have the fifo-depth property */ + ssi_private->fifo_depth = 8; /* Initialize the the device_attribute structure */ - dev_attr->attr.name = "ssi-stats"; + dev_attr = &ssi_private->dev_attr; + dev_attr->attr.name = "statistics"; dev_attr->attr.mode = S_IRUGO; dev_attr->show = fsl_sysfs_ssi_show; - ret = device_create_file(ssi_private->dev, dev_attr); + ret = device_create_file(&pdev->dev, dev_attr); if (ret) { - dev_err(ssi_info->dev, "could not create sysfs %s file\n", + dev_err(&pdev->dev, "could not create sysfs %s file\n", ssi_private->dev_attr.attr.name); - kfree(fsl_ssi_dai); - return NULL; + goto error; } - fsl_ssi_dai->private_data = ssi_private; - fsl_ssi_dai->name = ssi_private->name; - fsl_ssi_dai->id = ssi_info->id; - fsl_ssi_dai->dev = ssi_info->dev; - fsl_ssi_dai->symmetric_rates = 1; + /* Register with ASoC */ + dev_set_drvdata(&pdev->dev, ssi_private); + + ret = snd_soc_register_dai(&pdev->dev, &ssi_private->cpu_dai_drv); + if (ret) { + dev_err(&pdev->dev, "failed to register DAI: %d\n", ret); + goto error; + } - ret = snd_soc_register_dai(fsl_ssi_dai); - if (ret != 0) { - dev_err(ssi_info->dev, "failed to register DAI: %d\n", ret); - kfree(fsl_ssi_dai); - return NULL; + /* Trigger the machine driver's probe function. The platform driver + * name of the machine driver is taken from the /model property of the + * device tree. We also pass the address of the CPU DAI driver + * structure. + */ + sprop = of_get_property(of_find_node_by_path("/"), "model", NULL); + /* Sometimes the model name has a "fsl," prefix, so we strip that. */ + p = strrchr(sprop, ','); + if (p) + sprop = p + 1; + snprintf(name, sizeof(name), "snd-soc-%s", sprop); + make_lowercase(name); + + ssi_private->pdev = + platform_device_register_data(&pdev->dev, name, 0, NULL, 0); + if (IS_ERR(ssi_private->pdev)) { + ret = PTR_ERR(ssi_private->pdev); + dev_err(&pdev->dev, "failed to register platform: %d\n", ret); + goto error; } - return fsl_ssi_dai; + return 0; + +error: + snd_soc_unregister_dai(&pdev->dev); + dev_set_drvdata(&pdev->dev, NULL); + if (dev_attr) + device_remove_file(&pdev->dev, dev_attr); + irq_dispose_mapping(ssi_private->irq); + iounmap(ssi_private->ssi); + kfree(ssi_private); + + return ret; } -EXPORT_SYMBOL_GPL(fsl_ssi_create_dai); -/** - * fsl_ssi_destroy_dai: destroy the snd_soc_dai object - * - * This function undoes the operations of fsl_ssi_create_dai() - */ -void fsl_ssi_destroy_dai(struct snd_soc_dai *fsl_ssi_dai) +static int fsl_ssi_remove(struct platform_device *pdev) { - struct fsl_ssi_private *ssi_private = - container_of(fsl_ssi_dai, struct fsl_ssi_private, cpu_dai); - - device_remove_file(ssi_private->dev, &ssi_private->dev_attr); + struct fsl_ssi_private *ssi_private = dev_get_drvdata(&pdev->dev); - snd_soc_unregister_dai(&ssi_private->cpu_dai); + platform_device_unregister(ssi_private->pdev); + snd_soc_unregister_dai(&pdev->dev); + device_remove_file(&pdev->dev, &ssi_private->dev_attr); kfree(ssi_private); + dev_set_drvdata(&pdev->dev, NULL); + + return 0; } -EXPORT_SYMBOL_GPL(fsl_ssi_destroy_dai); + +static const struct of_device_id fsl_ssi_ids[] = { + { .compatible = "fsl,mpc8610-ssi", }, + {} +}; +MODULE_DEVICE_TABLE(of, fsl_ssi_ids); + +static struct of_platform_driver fsl_ssi_driver = { + .driver = { + .name = "fsl-ssi-dai", + .owner = THIS_MODULE, + .of_match_table = fsl_ssi_ids, + }, + .probe = fsl_ssi_probe, + .remove = fsl_ssi_remove, +}; static int __init fsl_ssi_init(void) { printk(KERN_INFO "Freescale Synchronous Serial Interface (SSI) ASoC Driver\n"); - return 0; + return of_register_platform_driver(&fsl_ssi_driver); } + +static void __exit fsl_ssi_exit(void) +{ + of_unregister_platform_driver(&fsl_ssi_driver); +} + module_init(fsl_ssi_init); +module_exit(fsl_ssi_exit); MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); MODULE_DESCRIPTION("Freescale Synchronous Serial Interface (SSI) ASoC Driver"); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index eade01f..2173000 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -196,31 +196,5 @@ struct ccsr_ssi { #define CCSR_SSI_SOR_WAIT(x) (((x) & 3) << CCSR_SSI_SOR_WAIT_SHIFT) #define CCSR_SSI_SOR_SYNRST 0x00000001 -/* Instantiation data for an SSI interface - * - * This structure contains all the information that the the SSI driver needs - * to instantiate an SSI interface with ALSA. The machine driver should - * create this structure, fill it in, call fsl_ssi_create_dai(), and then - * delete the structure. - * - * id: which SSI this is (0, 1, etc. ) - * ssi: pointer to the SSI's registers - * ssi_phys: physical address of the SSI registers - * irq: IRQ of this SSI - * dev: struct device, used to create the sysfs statistics file - * asynchronous: 0=synchronous mode, 1=asynchronous mode -*/ -struct fsl_ssi_info { - unsigned int id; - struct ccsr_ssi __iomem *ssi; - dma_addr_t ssi_phys; - unsigned int irq; - struct device *dev; - int asynchronous; -}; - -struct snd_soc_dai *fsl_ssi_create_dai(struct fsl_ssi_info *ssi_info); -void fsl_ssi_destroy_dai(struct snd_soc_dai *fsl_ssi_dai); - #endif diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c index 3dcd146..dce6b55 100644 --- a/sound/soc/fsl/mpc5200_dma.c +++ b/sound/soc/fsl/mpc5200_dma.c @@ -9,6 +9,8 @@ #include <linux/module.h> #include <linux/of_device.h> #include <linux/slab.h> +#include <linux/of_device.h> +#include <linux/of_platform.h> #include <sound/soc.h> @@ -107,7 +109,7 @@ static int psc_dma_hw_free(struct snd_pcm_substream *substream) static int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai); struct snd_pcm_runtime *runtime = substream->runtime; struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma); struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs; @@ -212,7 +214,7 @@ static int psc_dma_open(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai); struct psc_dma_stream *s; int rc; @@ -239,7 +241,7 @@ static int psc_dma_open(struct snd_pcm_substream *substream) static int psc_dma_close(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai); struct psc_dma_stream *s; dev_dbg(psc_dma->dev, "psc_dma_close(substream=%p)\n", substream); @@ -264,7 +266,7 @@ static snd_pcm_uframes_t psc_dma_pointer(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai); struct psc_dma_stream *s; dma_addr_t count; @@ -302,11 +304,11 @@ static int psc_dma_new(struct snd_card *card, struct snd_soc_dai *dai, struct snd_pcm *pcm) { struct snd_soc_pcm_runtime *rtd = pcm->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai); size_t size = psc_dma_hardware.buffer_bytes_max; int rc = 0; - dev_dbg(rtd->socdev->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n", + dev_dbg(rtd->platform->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n", card, dai, pcm); if (!card->dev->dma_mask) @@ -328,8 +330,8 @@ static int psc_dma_new(struct snd_card *card, struct snd_soc_dai *dai, goto capture_alloc_err; } - if (rtd->socdev->card->codec->ac97) - rtd->socdev->card->codec->ac97->private_data = psc_dma; + if (rtd->codec->ac97) + rtd->codec->ac97->private_data = psc_dma; return 0; @@ -349,7 +351,7 @@ static void psc_dma_free(struct snd_pcm *pcm) struct snd_pcm_substream *substream; int stream; - dev_dbg(rtd->socdev->dev, "psc_dma_free(pcm=%p)\n", pcm); + dev_dbg(rtd->platform->dev, "psc_dma_free(pcm=%p)\n", pcm); for (stream = 0; stream < 2; stream++) { substream = pcm->streams[stream].substream; @@ -361,15 +363,14 @@ static void psc_dma_free(struct snd_pcm *pcm) } } -struct snd_soc_platform mpc5200_audio_dma_platform = { - .name = "mpc5200-psc-audio", - .pcm_ops = &psc_dma_ops, +static struct snd_soc_platform_driver mpc5200_audio_dma_platform = { + .ops = &psc_dma_ops, .pcm_new = &psc_dma_new, .pcm_free = &psc_dma_free, }; -EXPORT_SYMBOL_GPL(mpc5200_audio_dma_platform); -int mpc5200_audio_dma_create(struct platform_device *op) +static int mpc5200_hpcd_probe(struct of_device *op, + const struct of_device_id *match) { phys_addr_t fifo; struct psc_dma *psc_dma; @@ -475,7 +476,7 @@ int mpc5200_audio_dma_create(struct platform_device *op) dev_set_drvdata(&op->dev, psc_dma); /* Tell the ASoC OF helpers about it */ - return snd_soc_register_platform(&mpc5200_audio_dma_platform); + return snd_soc_register_platform(&op->dev, &mpc5200_audio_dma_platform); out_irq: free_irq(psc_dma->irq, psc_dma); free_irq(psc_dma->capture.irq, &psc_dma->capture); @@ -486,15 +487,14 @@ out_unmap: iounmap(regs); return ret; } -EXPORT_SYMBOL_GPL(mpc5200_audio_dma_create); -int mpc5200_audio_dma_destroy(struct platform_device *op) +static int mpc5200_hpcd_remove(struct of_device *op) { struct psc_dma *psc_dma = dev_get_drvdata(&op->dev); dev_dbg(&op->dev, "mpc5200_audio_dma_destroy()\n"); - snd_soc_unregister_platform(&mpc5200_audio_dma_platform); + snd_soc_unregister_platform(&op->dev); bcom_gen_bd_rx_release(psc_dma->capture.bcom_task); bcom_gen_bd_tx_release(psc_dma->playback.bcom_task); @@ -510,7 +510,35 @@ int mpc5200_audio_dma_destroy(struct platform_device *op) return 0; } -EXPORT_SYMBOL_GPL(mpc5200_audio_dma_destroy); + +static struct of_device_id mpc5200_hpcd_match[] = { + { + .compatible = "fsl,mpc5200-pcm", + }, + {} +}; +MODULE_DEVICE_TABLE(of, mpc5200_hpcd_match); + +static struct of_platform_driver mpc5200_hpcd_of_driver = { + .owner = THIS_MODULE, + .name = "mpc5200-pcm-audio", + .match_table = mpc5200_hpcd_match, + .probe = mpc5200_hpcd_probe, + .remove = mpc5200_hpcd_remove, +}; + +static int __init mpc5200_hpcd_init(void) +{ + return of_register_platform_driver(&mpc5200_hpcd_of_driver); +} + +static void __exit mpc5200_hpcd_exit(void) +{ + of_unregister_platform_driver(&mpc5200_hpcd_of_driver); +} + +module_init(mpc5200_hpcd_init); +module_exit(mpc5200_hpcd_exit); MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver"); diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h index ca99586..a3c0cd5 100644 --- a/sound/soc/fsl/mpc5200_dma.h +++ b/sound/soc/fsl/mpc5200_dma.h @@ -81,9 +81,4 @@ to_psc_dma_stream(struct snd_pcm_substream *substream, struct psc_dma *psc_dma) return &psc_dma->playback; } -int mpc5200_audio_dma_create(struct platform_device *op); -int mpc5200_audio_dma_destroy(struct platform_device *op); - -extern struct snd_soc_platform mpc5200_audio_dma_platform; - #endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */ diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c index a956023..40acc8e 100644 --- a/sound/soc/fsl/mpc5200_psc_ac97.c +++ b/sound/soc/fsl/mpc5200_psc_ac97.c @@ -143,7 +143,7 @@ static int psc_ac97_hw_analog_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *cpu_dai) { - struct psc_dma *psc_dma = cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai); struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma); dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i" @@ -166,7 +166,7 @@ static int psc_ac97_hw_digital_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *cpu_dai) { - struct psc_dma *psc_dma = cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai); dev_dbg(psc_dma->dev, "%s(substream=%p)\n", __func__, substream); @@ -181,8 +181,7 @@ static int psc_ac97_hw_digital_params(struct snd_pcm_substream *substream, static int psc_ac97_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(dai); struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma); switch (cmd) { @@ -207,10 +206,9 @@ static int psc_ac97_trigger(struct snd_pcm_substream *substream, int cmd, return 0; } -static int psc_ac97_probe(struct platform_device *pdev, - struct snd_soc_dai *cpu_dai) +static int psc_ac97_probe(struct snd_soc_dai *cpu_dai) { - struct psc_dma *psc_dma = cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai); struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs; /* Go */ @@ -237,9 +235,8 @@ static struct snd_soc_dai_ops psc_ac97_digital_ops = { .hw_params = psc_ac97_hw_digital_params, }; -struct snd_soc_dai psc_ac97_dai[] = { +static struct snd_soc_dai_driver psc_ac97_dai[] = { { - .name = "AC97", .ac97_control = 1, .probe = psc_ac97_probe, .playback = { @@ -257,7 +254,6 @@ struct snd_soc_dai psc_ac97_dai[] = { .ops = &psc_ac97_analog_ops, }, { - .name = "SPDIF", .ac97_control = 1, .playback = { .channels_min = 1, @@ -268,7 +264,6 @@ struct snd_soc_dai psc_ac97_dai[] = { }, .ops = &psc_ac97_digital_ops, } }; -EXPORT_SYMBOL_GPL(psc_ac97_dai); @@ -280,18 +275,11 @@ EXPORT_SYMBOL_GPL(psc_ac97_dai); static int __devinit psc_ac97_of_probe(struct platform_device *op, const struct of_device_id *match) { - int rc, i; + int rc; struct snd_ac97 ac97; struct mpc52xx_psc __iomem *regs; - rc = mpc5200_audio_dma_create(op); - if (rc != 0) - return rc; - - for (i = 0; i < ARRAY_SIZE(psc_ac97_dai); i++) - psc_ac97_dai[i].dev = &op->dev; - - rc = snd_soc_register_dais(psc_ac97_dai, ARRAY_SIZE(psc_ac97_dai)); + rc = snd_soc_register_dais(&op->dev, psc_ac97_dai, ARRAY_SIZE(psc_ac97_dai)); if (rc != 0) { dev_err(&op->dev, "Failed to register DAI\n"); return rc; @@ -301,9 +289,6 @@ static int __devinit psc_ac97_of_probe(struct platform_device *op, regs = psc_dma->psc_regs; ac97.private_data = psc_dma; - for (i = 0; i < ARRAY_SIZE(psc_ac97_dai); i++) - psc_ac97_dai[i].private_data = psc_dma; - psc_dma->imr = 0; out_be16(&psc_dma->psc_regs->isr_imr.imr, psc_dma->imr); @@ -319,7 +304,8 @@ static int __devinit psc_ac97_of_probe(struct platform_device *op, static int __devexit psc_ac97_of_remove(struct platform_device *op) { - return mpc5200_audio_dma_destroy(op); + snd_soc_unregister_dais(&op->dev, ARRAY_SIZE(psc_ac97_dai)); + return 0; } /* Match table for of_platform binding */ diff --git a/sound/soc/fsl/mpc5200_psc_ac97.h b/sound/soc/fsl/mpc5200_psc_ac97.h index 4bc18c3..e881e78 100644 --- a/sound/soc/fsl/mpc5200_psc_ac97.h +++ b/sound/soc/fsl/mpc5200_psc_ac97.h @@ -7,8 +7,6 @@ #ifndef __SOUND_SOC_FSL_MPC52xx_PSC_AC97_H__ #define __SOUND_SOC_FSL_MPC52xx_PSC_AC97_H__ -extern struct snd_soc_dai psc_ac97_dai[]; - #define MPC5200_AC97_NORMAL 0 #define MPC5200_AC97_SPDIF 1 diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c index 534f04cb..74ffed4 100644 --- a/sound/soc/fsl/mpc5200_psc_i2s.c +++ b/sound/soc/fsl/mpc5200_psc_i2s.c @@ -40,7 +40,7 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai); u32 mode; dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i" @@ -88,7 +88,7 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream, static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id, unsigned int freq, int dir) { - struct psc_dma *psc_dma = cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai); dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n", cpu_dai, dir); return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL; @@ -107,7 +107,7 @@ static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, */ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format) { - struct psc_dma *psc_dma = cpu_dai->private_data; + struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai); dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n", cpu_dai, format); return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL; @@ -129,8 +129,7 @@ static struct snd_soc_dai_ops psc_i2s_dai_ops = { .set_fmt = psc_i2s_set_fmt, }; -struct snd_soc_dai psc_i2s_dai[] = {{ - .name = "I2S", +static struct snd_soc_dai_driver psc_i2s_dai[] = {{ .playback = { .channels_min = 2, .channels_max = 2, @@ -145,7 +144,6 @@ struct snd_soc_dai psc_i2s_dai[] = {{ }, .ops = &psc_i2s_dai_ops, } }; -EXPORT_SYMBOL_GPL(psc_i2s_dai); /* --------------------------------------------------------------------- * OF platform bus binding code: @@ -159,11 +157,7 @@ static int __devinit psc_i2s_of_probe(struct platform_device *op, struct psc_dma *psc_dma; struct mpc52xx_psc __iomem *regs; - rc = mpc5200_audio_dma_create(op); - if (rc != 0) - return rc; - - rc = snd_soc_register_dais(psc_i2s_dai, ARRAY_SIZE(psc_i2s_dai)); + rc = snd_soc_register_dais(&op->dev, psc_i2s_dai, ARRAY_SIZE(psc_i2s_dai)); if (rc != 0) { pr_err("Failed to register DAI\n"); return 0; @@ -207,7 +201,8 @@ static int __devinit psc_i2s_of_probe(struct platform_device *op, static int __devexit psc_i2s_of_remove(struct platform_device *op) { - return mpc5200_audio_dma_destroy(op); + snd_soc_unregister_dais(&op->dev, ARRAY_SIZE(psc_i2s_dai)); + return 0; } /* Match table for of_platform binding */ diff --git a/sound/soc/fsl/mpc8610_hpcd.c b/sound/soc/fsl/mpc8610_hpcd.c index 3b13b8d..0d7dcf1 100644 --- a/sound/soc/fsl/mpc8610_hpcd.c +++ b/sound/soc/fsl/mpc8610_hpcd.c @@ -1,85 +1,97 @@ /** - * Freescale MPC8610HPCD ALSA SoC Fabric driver + * Freescale MPC8610HPCD ALSA SoC Machine driver * * Author: Timur Tabi <timur@freescale.com> * - * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed - * under the terms of the GNU General Public License version 2. This - * program is licensed "as is" without any warranty of any kind, whether - * express or implied. + * Copyright 2007-2010 Freescale Semiconductor, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. */ -#include <linux/slab.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/of_device.h> -#include <linux/of_platform.h> +#include <linux/slab.h> #include <sound/soc.h> -#include <asm/immap_86xx.h> +#include <asm/fsl_guts.h> -#include "../codecs/cs4270.h" #include "fsl_dma.h" #include "fsl_ssi.h" +/* There's only one global utilities register */ +static phys_addr_t guts_phys; + +#define DAI_NAME_SIZE 32 + /** - * mpc8610_hpcd_data: fabric-specific ASoC device data + * mpc8610_hpcd_data: machine-specific ASoC device data * * This structure contains data for a single sound platform device on an * MPC8610 HPCD. Some of the data is taken from the device tree. */ struct mpc8610_hpcd_data { - struct snd_soc_device sound_devdata; - struct snd_soc_dai_link dai; - struct snd_soc_card machine; + struct snd_soc_dai_link dai[2]; + struct snd_soc_card card; unsigned int dai_format; unsigned int codec_clk_direction; unsigned int cpu_clk_direction; unsigned int clk_frequency; - struct ccsr_guts __iomem *guts; - struct ccsr_ssi __iomem *ssi; - unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */ - unsigned int ssi_irq; - unsigned int dma_id; /* 0 = DMA1, 1 = DMA2, etc */ - unsigned int dma_irq[2]; - struct ccsr_dma_channel __iomem *dma[2]; + unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */ + unsigned int dma_id[2]; /* 0 = DMA1, 1 = DMA2, etc */ unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/ + char codec_dai_name[DAI_NAME_SIZE]; + char codec_name[DAI_NAME_SIZE]; + char platform_name[2][DAI_NAME_SIZE]; /* One for each DMA channel */ }; /** * mpc8610_hpcd_machine_probe: initialize the board * - * This function is called when platform_device_add() is called. It is used - * to initialize the board-specific hardware. + * This function is used to initialize the board-specific hardware. * * Here we program the DMACR and PMUXCR registers. */ static int mpc8610_hpcd_machine_probe(struct platform_device *sound_device) { + struct snd_soc_card *card = platform_get_drvdata(sound_device); struct mpc8610_hpcd_data *machine_data = - sound_device->dev.platform_data; + container_of(card, struct mpc8610_hpcd_data, card); + struct ccsr_guts_86xx __iomem *guts; - /* Program the signal routing between the SSI and the DMA */ - guts_set_dmacr(machine_data->guts, machine_data->dma_id, - machine_data->dma_channel_id[0], CCSR_GUTS_DMACR_DEV_SSI); - guts_set_dmacr(machine_data->guts, machine_data->dma_id, - machine_data->dma_channel_id[1], CCSR_GUTS_DMACR_DEV_SSI); + guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); + if (!guts) { + dev_err(card->dev, "could not map global utilities\n"); + return -ENOMEM; + } - guts_set_pmuxcr_dma(machine_data->guts, machine_data->dma_id, - machine_data->dma_channel_id[0], 0); - guts_set_pmuxcr_dma(machine_data->guts, machine_data->dma_id, - machine_data->dma_channel_id[1], 0); + /* Program the signal routing between the SSI and the DMA */ + guts_set_dmacr(guts, machine_data->dma_id[0], + machine_data->dma_channel_id[0], + CCSR_GUTS_DMACR_DEV_SSI); + guts_set_dmacr(guts, machine_data->dma_id[1], + machine_data->dma_channel_id[1], + CCSR_GUTS_DMACR_DEV_SSI); + + guts_set_pmuxcr_dma(guts, machine_data->dma_id[0], + machine_data->dma_channel_id[0], 0); + guts_set_pmuxcr_dma(guts, machine_data->dma_id[1], + machine_data->dma_channel_id[1], 0); switch (machine_data->ssi_id) { case 0: - clrsetbits_be32(&machine_data->guts->pmuxcr, + clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI); break; case 1: - clrsetbits_be32(&machine_data->guts->pmuxcr, + clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI); break; } + iounmap(guts); + return 0; } @@ -93,38 +105,15 @@ static int mpc8610_hpcd_machine_probe(struct platform_device *sound_device) static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; - struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; struct mpc8610_hpcd_data *machine_data = - rtd->socdev->dev->platform_data; + container_of(rtd->card, struct mpc8610_hpcd_data, card); + struct device *dev = rtd->card->dev; int ret = 0; - /* Tell the CPU driver what the serial protocol is. */ - ret = snd_soc_dai_set_fmt(cpu_dai, machine_data->dai_format); - if (ret < 0) { - dev_err(substream->pcm->card->dev, - "could not set CPU driver audio format\n"); - return ret; - } - /* Tell the codec driver what the serial protocol is. */ - ret = snd_soc_dai_set_fmt(codec_dai, machine_data->dai_format); + ret = snd_soc_dai_set_fmt(rtd->codec_dai, machine_data->dai_format); if (ret < 0) { - dev_err(substream->pcm->card->dev, - "could not set codec driver audio format\n"); - return ret; - } - - /* - * Tell the CPU driver what the clock frequency is, and whether it's a - * slave or master. - */ - ret = snd_soc_dai_set_sysclk(cpu_dai, 0, - machine_data->clk_frequency, - machine_data->cpu_clk_direction); - if (ret < 0) { - dev_err(substream->pcm->card->dev, - "could not set CPU driver clock parameters\n"); + dev_err(dev, "could not set codec driver audio format\n"); return ret; } @@ -132,12 +121,11 @@ static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream) * Tell the codec driver what the MCLK frequency is, and whether it's * a slave or master. */ - ret = snd_soc_dai_set_sysclk(codec_dai, 0, - machine_data->clk_frequency, - machine_data->codec_clk_direction); + ret = snd_soc_dai_set_sysclk(rtd->codec_dai, 0, + machine_data->clk_frequency, + machine_data->codec_clk_direction); if (ret < 0) { - dev_err(substream->pcm->card->dev, - "could not set codec driver clock params\n"); + dev_err(dev, "could not set codec driver clock params\n"); return ret; } @@ -150,116 +138,255 @@ static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream) * This function is called to remove the sound device for one SSI. We * de-program the DMACR and PMUXCR register. */ -int mpc8610_hpcd_machine_remove(struct platform_device *sound_device) +static int mpc8610_hpcd_machine_remove(struct platform_device *sound_device) { + struct snd_soc_card *card = platform_get_drvdata(sound_device); struct mpc8610_hpcd_data *machine_data = - sound_device->dev.platform_data; + container_of(card, struct mpc8610_hpcd_data, card); + struct ccsr_guts_86xx __iomem *guts; + + guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); + if (!guts) { + dev_err(card->dev, "could not map global utilities\n"); + return -ENOMEM; + } /* Restore the signal routing */ - guts_set_dmacr(machine_data->guts, machine_data->dma_id, - machine_data->dma_channel_id[0], 0); - guts_set_dmacr(machine_data->guts, machine_data->dma_id, - machine_data->dma_channel_id[1], 0); + guts_set_dmacr(guts, machine_data->dma_id[0], + machine_data->dma_channel_id[0], 0); + guts_set_dmacr(guts, machine_data->dma_id[1], + machine_data->dma_channel_id[1], 0); switch (machine_data->ssi_id) { case 0: - clrsetbits_be32(&machine_data->guts->pmuxcr, + clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA); break; case 1: - clrsetbits_be32(&machine_data->guts->pmuxcr, + clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA); break; } + iounmap(guts); + return 0; } /** - * mpc8610_hpcd_ops: ASoC fabric driver operations + * mpc8610_hpcd_ops: ASoC machine driver operations */ static struct snd_soc_ops mpc8610_hpcd_ops = { .startup = mpc8610_hpcd_startup, }; /** - * mpc8610_hpcd_probe: OF probe function for the fabric driver + * get_node_by_phandle_name - get a node by its phandle name * - * This function gets called when an SSI node is found in the device tree. + * This function takes a node, the name of a property in that node, and a + * compatible string. Assuming the property is a phandle to another node, + * it returns that node, (optionally) if that node is compatible. * - * Although this is a fabric driver, the SSI node is the "master" node with - * respect to audio hardware connections. Therefore, we create a new ASoC - * device for each new SSI node that has a codec attached. + * If the property is not a phandle, or the node it points to is not compatible + * with the specific string, then NULL is returned. + */ +static struct device_node *get_node_by_phandle_name(struct device_node *np, + const char *name, + const char *compatible) +{ + const phandle *ph; + int len; + + ph = of_get_property(np, name, &len); + if (!ph || (len != sizeof(phandle))) + return NULL; + + np = of_find_node_by_phandle(*ph); + if (!np) + return NULL; + + if (compatible && !of_device_is_compatible(np, compatible)) { + of_node_put(np); + return NULL; + } + + return np; +} + +/** + * get_parent_cell_index -- return the cell-index of the parent of a node + * + * Return the value of the cell-index property of the parent of the given + * node. This is used for DMA channel nodes that need to know the DMA ID + * of the controller they are on. + */ +static int get_parent_cell_index(struct device_node *np) +{ + struct device_node *parent = of_get_parent(np); + const u32 *iprop; + + if (!parent) + return -1; + + iprop = of_get_property(parent, "cell-index", NULL); + of_node_put(parent); + + if (!iprop) + return -1; + + return *iprop; +} + +/** + * codec_node_dev_name - determine the dev_name for a codec node * - * FIXME: Currently, we only support one DMA controller, so if there are - * multiple SSI nodes with codecs, only the first will be supported. + * This function determines the dev_name for an I2C node. This is the name + * that would be returned by dev_name() if this device_node were part of a + * 'struct device' It's ugly and hackish, but it works. * - * FIXME: Even if we did support multiple DMA controllers, we have no - * mechanism for assigning DMA controllers and channels to the individual - * SSI devices. We also probably aren't compatible with the generic Elo DMA - * device driver. + * The dev_name for such devices include the bus number and I2C address. For + * example, "cs4270-codec.0-004f". */ -static int mpc8610_hpcd_probe(struct platform_device *ofdev, - const struct of_device_id *match) +static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) { - struct device_node *np = ofdev->dev.of_node; - struct device_node *codec_np = NULL; - struct device_node *guts_np = NULL; - struct device_node *dma_np = NULL; - struct device_node *dma_channel_np = NULL; - const phandle *codec_ph; - const char *sprop; const u32 *iprop; + int bus, addr; + char temp[DAI_NAME_SIZE]; + + of_modalias_node(np, temp, DAI_NAME_SIZE); + + iprop = of_get_property(np, "reg", NULL); + if (!iprop) + return -EINVAL; + + addr = *iprop; + + bus = get_parent_cell_index(np); + if (bus < 0) + return bus; + + snprintf(buf, len, "%s-codec.%u-%04x", temp, bus, addr); + + return 0; +} + +static int get_dma_channel(struct device_node *ssi_np, + const char *compatible, + struct snd_soc_dai_link *dai, + unsigned int *dma_channel_id, + unsigned int *dma_id) +{ struct resource res; + struct device_node *dma_channel_np; + const u32 *iprop; + int ret; + + dma_channel_np = get_node_by_phandle_name(ssi_np, compatible, + "fsl,ssi-dma-channel"); + if (!dma_channel_np) + return -EINVAL; + + /* Determine the dev_name for the device_node. This code mimics the + * behavior of of_device_make_bus_id(). We need this because ASoC uses + * the dev_name() of the device to match the platform (DMA) device with + * the CPU (SSI) device. It's all ugly and hackish, but it works (for + * now). + * + * dai->platform name should already point to an allocated buffer. + */ + ret = of_address_to_resource(dma_channel_np, 0, &res); + if (ret) + return ret; + snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", + (unsigned long long) res.start, dma_channel_np->name); + + iprop = of_get_property(dma_channel_np, "cell-index", NULL); + if (!iprop) { + of_node_put(dma_channel_np); + return -EINVAL; + } + + *dma_channel_id = *iprop; + *dma_id = get_parent_cell_index(dma_channel_np); + of_node_put(dma_channel_np); + + return 0; +} + +/** + * mpc8610_hpcd_probe: platform probe function for the machine driver + * + * Although this is a machine driver, the SSI node is the "master" node with + * respect to audio hardware connections. Therefore, we create a new ASoC + * device for each new SSI node that has a codec attached. + */ +static int mpc8610_hpcd_probe(struct platform_device *pdev) +{ + struct device *dev = pdev->dev.parent; + /* ssi_pdev is the platform device for the SSI node that probed us */ + struct platform_device *ssi_pdev = + container_of(dev, struct platform_device, dev); + struct device_node *np = ssi_pdev->dev.of_node; + struct device_node *codec_np = NULL; struct platform_device *sound_device = NULL; struct mpc8610_hpcd_data *machine_data; - struct fsl_ssi_info ssi_info; - struct fsl_dma_info dma_info; int ret = -ENODEV; - unsigned int playback_dma_channel; - unsigned int capture_dma_channel; + const char *sprop; + const u32 *iprop; + + /* We are only interested in SSIs with a codec phandle in them, + * so let's make sure this SSI has one. The MPC8610 HPCD only + * knows about the CS4270 codec, so reject anything else. + */ + codec_np = get_node_by_phandle_name(np, "codec-handle", + "cirrus,cs4270"); + if (!codec_np) { + dev_err(dev, "invalid codec node\n"); + return -EINVAL; + } machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), GFP_KERNEL); if (!machine_data) return -ENOMEM; - memset(&ssi_info, 0, sizeof(ssi_info)); - memset(&dma_info, 0, sizeof(dma_info)); + machine_data->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev); + machine_data->dai[0].ops = &mpc8610_hpcd_ops; - ssi_info.dev = &ofdev->dev; - - /* - * We are only interested in SSIs with a codec phandle in them, so let's - * make sure this SSI has one. - */ - codec_ph = of_get_property(np, "codec-handle", NULL); - if (!codec_ph) + /* Determine the codec name, it will be used as the codec DAI name */ + ret = codec_node_dev_name(codec_np, machine_data->codec_name, + DAI_NAME_SIZE); + if (ret) { + dev_err(&pdev->dev, "invalid codec node %s\n", + codec_np->full_name); + ret = -EINVAL; goto error; + } + machine_data->dai[0].codec_name = machine_data->codec_name; - codec_np = of_find_node_by_phandle(*codec_ph); - if (!codec_np) - goto error; + /* The DAI name from the codec (snd_soc_dai_driver.name) */ + machine_data->dai[0].codec_dai_name = "cs4270-hifi"; - /* The MPC8610 HPCD only knows about the CS4270 codec, so reject - anything else. */ - if (!of_device_is_compatible(codec_np, "cirrus,cs4270")) - goto error; + /* We register two DAIs per SSI, one for playback and the other for + * capture. Currently, we only support codecs that have one DAI for + * both playback and capture. + */ + memcpy(&machine_data->dai[1], &machine_data->dai[0], + sizeof(struct snd_soc_dai_link)); /* Get the device ID */ iprop = of_get_property(np, "cell-index", NULL); if (!iprop) { - dev_err(&ofdev->dev, "cell-index property not found\n"); + dev_err(&pdev->dev, "cell-index property not found\n"); ret = -EINVAL; goto error; } machine_data->ssi_id = *iprop; - ssi_info.id = *iprop; /* Get the serial format and clock direction. */ sprop = of_get_property(np, "fsl,mode", NULL); if (!sprop) { - dev_err(&ofdev->dev, "fsl,mode property not found\n"); + dev_err(&pdev->dev, "fsl,mode property not found\n"); ret = -EINVAL; goto error; } @@ -269,15 +396,14 @@ static int mpc8610_hpcd_probe(struct platform_device *ofdev, machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; - /* - * In i2s-slave mode, the codec has its own clock source, so we + /* In i2s-slave mode, the codec has its own clock source, so we * need to get the frequency from the device tree and pass it to * the codec driver. */ iprop = of_get_property(codec_np, "clock-frequency", NULL); if (!iprop || !*iprop) { - dev_err(&ofdev->dev, "codec bus-frequency property " - "is missing or invalid\n"); + dev_err(&pdev->dev, "codec bus-frequency " + "property is missing or invalid\n"); ret = -EINVAL; goto error; } @@ -311,317 +437,153 @@ static int mpc8610_hpcd_probe(struct platform_device *ofdev, machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; } else { - dev_err(&ofdev->dev, - "unrecognized fsl,mode property \"%s\"\n", sprop); + dev_err(&pdev->dev, + "unrecognized fsl,mode property '%s'\n", sprop); ret = -EINVAL; goto error; } if (!machine_data->clk_frequency) { - dev_err(&ofdev->dev, "unknown clock frequency\n"); + dev_err(&pdev->dev, "unknown clock frequency\n"); ret = -EINVAL; goto error; } - /* Read the SSI information from the device tree */ - ret = of_address_to_resource(np, 0, &res); + /* Find the playback DMA channel to use. */ + machine_data->dai[0].platform_name = machine_data->platform_name[0]; + ret = get_dma_channel(np, "fsl,playback-dma", &machine_data->dai[0], + &machine_data->dma_channel_id[0], + &machine_data->dma_id[0]); if (ret) { - dev_err(&ofdev->dev, "could not obtain SSI address\n"); - goto error; - } - if (!res.start) { - dev_err(&ofdev->dev, "invalid SSI address\n"); - goto error; - } - ssi_info.ssi_phys = res.start; - - machine_data->ssi = ioremap(ssi_info.ssi_phys, sizeof(struct ccsr_ssi)); - if (!machine_data->ssi) { - dev_err(&ofdev->dev, "could not map SSI address %x\n", - ssi_info.ssi_phys); - ret = -EINVAL; - goto error; - } - ssi_info.ssi = machine_data->ssi; - - - /* Get the IRQ of the SSI */ - machine_data->ssi_irq = irq_of_parse_and_map(np, 0); - if (!machine_data->ssi_irq) { - dev_err(&ofdev->dev, "could not get SSI IRQ\n"); - ret = -EINVAL; - goto error; - } - ssi_info.irq = machine_data->ssi_irq; - - /* Do we want to use asynchronous mode? */ - ssi_info.asynchronous = - of_find_property(np, "fsl,ssi-asynchronous", NULL) ? 1 : 0; - if (ssi_info.asynchronous) - dev_info(&ofdev->dev, "using asynchronous mode\n"); - - /* Map the global utilities registers. */ - guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts"); - if (!guts_np) { - dev_err(&ofdev->dev, "could not obtain address of GUTS\n"); - ret = -EINVAL; - goto error; - } - machine_data->guts = of_iomap(guts_np, 0); - of_node_put(guts_np); - if (!machine_data->guts) { - dev_err(&ofdev->dev, "could not map GUTS\n"); - ret = -EINVAL; - goto error; - } - - /* Find the DMA channels to use. Both SSIs need to use the same DMA - * controller, so let's use DMA#1. - */ - for_each_compatible_node(dma_np, NULL, "fsl,mpc8610-dma") { - iprop = of_get_property(dma_np, "cell-index", NULL); - if (iprop && (*iprop == 0)) { - of_node_put(dma_np); - break; - } - } - if (!dma_np) { - dev_err(&ofdev->dev, "could not find DMA node\n"); - ret = -EINVAL; - goto error; - } - machine_data->dma_id = *iprop; - - /* SSI1 needs to use DMA Channels 0 and 1, and SSI2 needs to use DMA - * channels 2 and 3. This is just how the MPC8610 is wired - * internally. - */ - playback_dma_channel = (machine_data->ssi_id == 0) ? 0 : 2; - capture_dma_channel = (machine_data->ssi_id == 0) ? 1 : 3; - - /* - * Find the DMA channels to use. - */ - while ((dma_channel_np = of_get_next_child(dma_np, dma_channel_np))) { - iprop = of_get_property(dma_channel_np, "cell-index", NULL); - if (iprop && (*iprop == playback_dma_channel)) { - /* dma_channel[0] and dma_irq[0] are for playback */ - dma_info.dma_channel[0] = of_iomap(dma_channel_np, 0); - dma_info.dma_irq[0] = - irq_of_parse_and_map(dma_channel_np, 0); - machine_data->dma_channel_id[0] = *iprop; - continue; - } - if (iprop && (*iprop == capture_dma_channel)) { - /* dma_channel[1] and dma_irq[1] are for capture */ - dma_info.dma_channel[1] = of_iomap(dma_channel_np, 0); - dma_info.dma_irq[1] = - irq_of_parse_and_map(dma_channel_np, 0); - machine_data->dma_channel_id[1] = *iprop; - continue; - } - } - if (!dma_info.dma_channel[0] || !dma_info.dma_channel[1] || - !dma_info.dma_irq[0] || !dma_info.dma_irq[1]) { - dev_err(&ofdev->dev, "could not find DMA channels\n"); - ret = -EINVAL; + dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n"); goto error; } - dma_info.ssi_stx_phys = ssi_info.ssi_phys + - offsetof(struct ccsr_ssi, stx0); - dma_info.ssi_srx_phys = ssi_info.ssi_phys + - offsetof(struct ccsr_ssi, srx0); - - /* We have the DMA information, so tell the DMA driver what it is */ - if (!fsl_dma_configure(&dma_info)) { - dev_err(&ofdev->dev, "could not instantiate DMA device\n"); - ret = -EBUSY; + /* Find the capture DMA channel to use. */ + machine_data->dai[1].platform_name = machine_data->platform_name[1]; + ret = get_dma_channel(np, "fsl,capture-dma", &machine_data->dai[1], + &machine_data->dma_channel_id[1], + &machine_data->dma_id[1]); + if (ret) { + dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n"); goto error; } - /* - * Initialize our DAI data structure. We should probably get this - * information from the device tree. - */ - machine_data->dai.name = "CS4270"; - machine_data->dai.stream_name = "CS4270"; - - machine_data->dai.cpu_dai = fsl_ssi_create_dai(&ssi_info); - machine_data->dai.codec_dai = &cs4270_dai; /* The codec_dai we want */ - machine_data->dai.ops = &mpc8610_hpcd_ops; + /* Initialize our DAI data structure. */ + machine_data->dai[0].stream_name = "playback"; + machine_data->dai[1].stream_name = "capture"; + machine_data->dai[0].name = machine_data->dai[0].stream_name; + machine_data->dai[1].name = machine_data->dai[1].stream_name; - machine_data->machine.probe = mpc8610_hpcd_machine_probe; - machine_data->machine.remove = mpc8610_hpcd_machine_remove; - machine_data->machine.name = "MPC8610 HPCD"; - machine_data->machine.num_links = 1; - machine_data->machine.dai_link = &machine_data->dai; + machine_data->card.probe = mpc8610_hpcd_machine_probe; + machine_data->card.remove = mpc8610_hpcd_machine_remove; + machine_data->card.name = pdev->name; /* The platform driver name */ + machine_data->card.num_links = 2; + machine_data->card.dai_link = machine_data->dai; /* Allocate a new audio platform device structure */ sound_device = platform_device_alloc("soc-audio", -1); if (!sound_device) { - dev_err(&ofdev->dev, "platform device allocation failed\n"); + dev_err(&pdev->dev, "platform device alloc failed\n"); ret = -ENOMEM; goto error; } - machine_data->sound_devdata.card = &machine_data->machine; - machine_data->sound_devdata.codec_dev = &soc_codec_device_cs4270; - machine_data->machine.platform = &fsl_soc_platform; - - sound_device->dev.platform_data = machine_data; - + /* Associate the card data with the sound device */ + platform_set_drvdata(sound_device, &machine_data->card); - /* Set the platform device and ASoC device to point to each other */ - platform_set_drvdata(sound_device, &machine_data->sound_devdata); - - machine_data->sound_devdata.dev = &sound_device->dev; - - - /* Tell ASoC to probe us. This will call mpc8610_hpcd_machine.probe(), - if it exists. */ + /* Register with ASoC */ ret = platform_device_add(sound_device); - if (ret) { - dev_err(&ofdev->dev, "platform device add failed\n"); + dev_err(&pdev->dev, "platform device add failed\n"); goto error; } - dev_set_drvdata(&ofdev->dev, sound_device); + of_node_put(codec_np); return 0; error: of_node_put(codec_np); - of_node_put(guts_np); - of_node_put(dma_np); - of_node_put(dma_channel_np); if (sound_device) platform_device_unregister(sound_device); - if (machine_data->dai.cpu_dai) - fsl_ssi_destroy_dai(machine_data->dai.cpu_dai); - - if (ssi_info.ssi) - iounmap(ssi_info.ssi); - - if (ssi_info.irq) - irq_dispose_mapping(ssi_info.irq); - - if (dma_info.dma_channel[0]) - iounmap(dma_info.dma_channel[0]); - - if (dma_info.dma_channel[1]) - iounmap(dma_info.dma_channel[1]); - - if (dma_info.dma_irq[0]) - irq_dispose_mapping(dma_info.dma_irq[0]); - - if (dma_info.dma_irq[1]) - irq_dispose_mapping(dma_info.dma_irq[1]); - - if (machine_data->guts) - iounmap(machine_data->guts); - kfree(machine_data); return ret; } /** - * mpc8610_hpcd_remove: remove the OF device + * mpc8610_hpcd_remove: remove the platform device * - * This function is called when the OF device is removed. + * This function is called when the platform device is removed. */ -static int mpc8610_hpcd_remove(struct platform_device *ofdev) +static int __devexit mpc8610_hpcd_remove(struct platform_device *pdev) { - struct platform_device *sound_device = dev_get_drvdata(&ofdev->dev); + struct platform_device *sound_device = dev_get_drvdata(&pdev->dev); + struct snd_soc_card *card = platform_get_drvdata(sound_device); struct mpc8610_hpcd_data *machine_data = - sound_device->dev.platform_data; + container_of(card, struct mpc8610_hpcd_data, card); platform_device_unregister(sound_device); - if (machine_data->dai.cpu_dai) - fsl_ssi_destroy_dai(machine_data->dai.cpu_dai); - - if (machine_data->ssi) - iounmap(machine_data->ssi); - - if (machine_data->dma[0]) - iounmap(machine_data->dma[0]); - - if (machine_data->dma[1]) - iounmap(machine_data->dma[1]); - - if (machine_data->dma_irq[0]) - irq_dispose_mapping(machine_data->dma_irq[0]); - - if (machine_data->dma_irq[1]) - irq_dispose_mapping(machine_data->dma_irq[1]); - - if (machine_data->guts) - iounmap(machine_data->guts); - kfree(machine_data); sound_device->dev.platform_data = NULL; - dev_set_drvdata(&ofdev->dev, NULL); + dev_set_drvdata(&pdev->dev, NULL); return 0; } -static struct of_device_id mpc8610_hpcd_match[] = { - { - .compatible = "fsl,mpc8610-ssi", - }, - {} -}; -MODULE_DEVICE_TABLE(of, mpc8610_hpcd_match); - -static struct of_platform_driver mpc8610_hpcd_of_driver = { +static struct platform_driver mpc8610_hpcd_driver = { + .probe = mpc8610_hpcd_probe, + .remove = __devexit_p(mpc8610_hpcd_remove), .driver = { - .name = "mpc8610_hpcd", + /* The name must match the 'model' property in the device tree, + * in lowercase letters. + */ + .name = "snd-soc-mpc8610hpcd", .owner = THIS_MODULE, - .of_match_table = mpc8610_hpcd_match, }, - .probe = mpc8610_hpcd_probe, - .remove = mpc8610_hpcd_remove, }; /** - * mpc8610_hpcd_init: fabric driver initialization. + * mpc8610_hpcd_init: machine driver initialization. * * This function is called when this module is loaded. */ static int __init mpc8610_hpcd_init(void) { - int ret; - - printk(KERN_INFO "Freescale MPC8610 HPCD ALSA SoC fabric driver\n"); + struct device_node *guts_np; + struct resource res; - ret = of_register_platform_driver(&mpc8610_hpcd_of_driver); + pr_info("Freescale MPC8610 HPCD ALSA SoC machine driver\n"); - if (ret) - printk(KERN_ERR - "mpc8610-hpcd: failed to register platform driver\n"); + /* Get the physical address of the global utilities registers */ + guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts"); + if (of_address_to_resource(guts_np, 0, &res)) { + pr_err("mpc8610-hpcd: missing/invalid global utilities node\n"); + return -EINVAL; + } + guts_phys = res.start; - return ret; + return platform_driver_register(&mpc8610_hpcd_driver); } /** - * mpc8610_hpcd_exit: fabric driver exit + * mpc8610_hpcd_exit: machine driver exit * * This function is called when this driver is unloaded. */ static void __exit mpc8610_hpcd_exit(void) { - of_unregister_platform_driver(&mpc8610_hpcd_of_driver); + platform_driver_unregister(&mpc8610_hpcd_driver); } module_init(mpc8610_hpcd_init); module_exit(mpc8610_hpcd_exit); MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); -MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC fabric driver"); -MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC machine driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c new file mode 100644 index 0000000..63b9eaa --- /dev/null +++ b/sound/soc/fsl/p1022_ds.c @@ -0,0 +1,591 @@ +/** + * Freescale P1022DS ALSA SoC Machine driver + * + * Author: Timur Tabi <timur@freescale.com> + * + * Copyright 2010 Freescale Semiconductor, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/of_device.h> +#include <linux/slab.h> +#include <sound/soc.h> +#include <asm/fsl_guts.h> + +#include "fsl_dma.h" +#include "fsl_ssi.h" + +/* P1022-specific PMUXCR and DMUXCR bit definitions */ + +#define CCSR_GUTS_PMUXCR_UART0_I2C1_MASK 0x0001c000 +#define CCSR_GUTS_PMUXCR_UART0_I2C1_UART0_SSI 0x00010000 +#define CCSR_GUTS_PMUXCR_UART0_I2C1_SSI 0x00018000 + +#define CCSR_GUTS_PMUXCR_SSI_DMA_TDM_MASK 0x00000c00 +#define CCSR_GUTS_PMUXCR_SSI_DMA_TDM_SSI 0x00000000 + +#define CCSR_GUTS_DMUXCR_PAD 1 /* DMA controller/channel set to pad */ +#define CCSR_GUTS_DMUXCR_SSI 2 /* DMA controller/channel set to SSI */ + +/* + * Set the DMACR register in the GUTS + * + * The DMACR register determines the source of initiated transfers for each + * channel on each DMA controller. Rather than have a bunch of repetitive + * macros for the bit patterns, we just have a function that calculates + * them. + * + * guts: Pointer to GUTS structure + * co: The DMA controller (0 or 1) + * ch: The channel on the DMA controller (0, 1, 2, or 3) + * device: The device to set as the target (CCSR_GUTS_DMUXCR_xxx) + */ +static inline void guts_set_dmuxcr(struct ccsr_guts_85xx __iomem *guts, + unsigned int co, unsigned int ch, unsigned int device) +{ + unsigned int shift = 16 + (8 * (1 - co) + 2 * (3 - ch)); + + clrsetbits_be32(&guts->dmuxcr, 3 << shift, device << shift); +} + +/* There's only one global utilities register */ +static phys_addr_t guts_phys; + +#define DAI_NAME_SIZE 32 + +/** + * machine_data: machine-specific ASoC device data + * + * This structure contains data for a single sound platform device on an + * P1022 DS. Some of the data is taken from the device tree. + */ +struct machine_data { + struct snd_soc_dai_link dai[2]; + struct snd_soc_card card; + unsigned int dai_format; + unsigned int codec_clk_direction; + unsigned int cpu_clk_direction; + unsigned int clk_frequency; + unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */ + unsigned int dma_id[2]; /* 0 = DMA1, 1 = DMA2, etc */ + unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/ + char codec_name[DAI_NAME_SIZE]; + char platform_name[2][DAI_NAME_SIZE]; /* One for each DMA channel */ +}; + +/** + * p1022_ds_machine_probe: initialize the board + * + * This function is used to initialize the board-specific hardware. + * + * Here we program the DMACR and PMUXCR registers. + */ +static int p1022_ds_machine_probe(struct platform_device *sound_device) +{ + struct snd_soc_card *card = platform_get_drvdata(sound_device); + struct machine_data *mdata = + container_of(card, struct machine_data, card); + struct ccsr_guts_85xx __iomem *guts; + + guts = ioremap(guts_phys, sizeof(struct ccsr_guts_85xx)); + if (!guts) { + dev_err(card->dev, "could not map global utilities\n"); + return -ENOMEM; + } + + /* Enable SSI Tx signal */ + clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_UART0_I2C1_MASK, + CCSR_GUTS_PMUXCR_UART0_I2C1_UART0_SSI); + + /* Enable SSI Rx signal */ + clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI_DMA_TDM_MASK, + CCSR_GUTS_PMUXCR_SSI_DMA_TDM_SSI); + + /* Enable DMA Channel for SSI */ + guts_set_dmuxcr(guts, mdata->dma_id[0], mdata->dma_channel_id[0], + CCSR_GUTS_DMUXCR_SSI); + + guts_set_dmuxcr(guts, mdata->dma_id[1], mdata->dma_channel_id[1], + CCSR_GUTS_DMUXCR_SSI); + + iounmap(guts); + + return 0; +} + +/** + * p1022_ds_startup: program the board with various hardware parameters + * + * This function takes board-specific information, like clock frequencies + * and serial data formats, and passes that information to the codec and + * transport drivers. + */ +static int p1022_ds_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct machine_data *mdata = + container_of(rtd->card, struct machine_data, card); + struct device *dev = rtd->card->dev; + int ret = 0; + + /* Tell the codec driver what the serial protocol is. */ + ret = snd_soc_dai_set_fmt(rtd->codec_dai, mdata->dai_format); + if (ret < 0) { + dev_err(dev, "could not set codec driver audio format\n"); + return ret; + } + + /* + * Tell the codec driver what the MCLK frequency is, and whether it's + * a slave or master. + */ + ret = snd_soc_dai_set_sysclk(rtd->codec_dai, 0, mdata->clk_frequency, + mdata->codec_clk_direction); + if (ret < 0) { + dev_err(dev, "could not set codec driver clock params\n"); + return ret; + } + + return 0; +} + +/** + * p1022_ds_machine_remove: Remove the sound device + * + * This function is called to remove the sound device for one SSI. We + * de-program the DMACR and PMUXCR register. + */ +static int p1022_ds_machine_remove(struct platform_device *sound_device) +{ + struct snd_soc_card *card = platform_get_drvdata(sound_device); + struct machine_data *mdata = + container_of(card, struct machine_data, card); + struct ccsr_guts_85xx __iomem *guts; + + guts = ioremap(guts_phys, sizeof(struct ccsr_guts_85xx)); + if (!guts) { + dev_err(card->dev, "could not map global utilities\n"); + return -ENOMEM; + } + + /* Restore the signal routing */ + clrbits32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_UART0_I2C1_MASK); + clrbits32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI_DMA_TDM_MASK); + guts_set_dmuxcr(guts, mdata->dma_id[0], mdata->dma_channel_id[0], 0); + guts_set_dmuxcr(guts, mdata->dma_id[1], mdata->dma_channel_id[1], 0); + + iounmap(guts); + + return 0; +} + +/** + * p1022_ds_ops: ASoC machine driver operations + */ +static struct snd_soc_ops p1022_ds_ops = { + .startup = p1022_ds_startup, +}; + +/** + * get_node_by_phandle_name - get a node by its phandle name + * + * This function takes a node, the name of a property in that node, and a + * compatible string. Assuming the property is a phandle to another node, + * it returns that node, (optionally) if that node is compatible. + * + * If the property is not a phandle, or the node it points to is not compatible + * with the specific string, then NULL is returned. + */ +static struct device_node *get_node_by_phandle_name(struct device_node *np, + const char *name, const char *compatible) +{ + np = of_parse_phandle(np, name, 0); + if (!np) + return NULL; + + if (!of_device_is_compatible(np, compatible)) { + of_node_put(np); + return NULL; + } + + return np; +} + +/** + * get_parent_cell_index -- return the cell-index of the parent of a node + * + * Return the value of the cell-index property of the parent of the given + * node. This is used for DMA channel nodes that need to know the DMA ID + * of the controller they are on. + */ +static int get_parent_cell_index(struct device_node *np) +{ + struct device_node *parent = of_get_parent(np); + const u32 *iprop; + int ret = -1; + + if (!parent) + return -1; + + iprop = of_get_property(parent, "cell-index", NULL); + if (iprop) + ret = *iprop; + + of_node_put(parent); + + return ret; +} + +/** + * codec_node_dev_name - determine the dev_name for a codec node + * + * This function determines the dev_name for an I2C node. This is the name + * that would be returned by dev_name() if this device_node were part of a + * 'struct device' It's ugly and hackish, but it works. + * + * The dev_name for such devices include the bus number and I2C address. For + * example, "cs4270-codec.0-004f". + */ +static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) +{ + const u32 *iprop; + int bus, addr; + char temp[DAI_NAME_SIZE]; + + of_modalias_node(np, temp, DAI_NAME_SIZE); + + iprop = of_get_property(np, "reg", NULL); + if (!iprop) + return -EINVAL; + + addr = *iprop; + + bus = get_parent_cell_index(np); + if (bus < 0) + return bus; + + snprintf(buf, len, "%s-codec.%u-%04x", temp, bus, addr); + + return 0; +} + +static int get_dma_channel(struct device_node *ssi_np, + const char *compatible, + struct snd_soc_dai_link *dai, + unsigned int *dma_channel_id, + unsigned int *dma_id) +{ + struct resource res; + struct device_node *dma_channel_np; + const u32 *iprop; + int ret; + + dma_channel_np = get_node_by_phandle_name(ssi_np, compatible, + "fsl,ssi-dma-channel"); + if (!dma_channel_np) + return -EINVAL; + + /* Determine the dev_name for the device_node. This code mimics the + * behavior of of_device_make_bus_id(). We need this because ASoC uses + * the dev_name() of the device to match the platform (DMA) device with + * the CPU (SSI) device. It's all ugly and hackish, but it works (for + * now). + * + * dai->platform name should already point to an allocated buffer. + */ + ret = of_address_to_resource(dma_channel_np, 0, &res); + if (ret) + return ret; + snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", + (unsigned long long) res.start, dma_channel_np->name); + + iprop = of_get_property(dma_channel_np, "cell-index", NULL); + if (!iprop) { + of_node_put(dma_channel_np); + return -EINVAL; + } + + *dma_channel_id = *iprop; + *dma_id = get_parent_cell_index(dma_channel_np); + of_node_put(dma_channel_np); + + return 0; +} + +/** + * p1022_ds_probe: platform probe function for the machine driver + * + * Although this is a machine driver, the SSI node is the "master" node with + * respect to audio hardware connections. Therefore, we create a new ASoC + * device for each new SSI node that has a codec attached. + */ +static int p1022_ds_probe(struct platform_device *pdev) +{ + struct device *dev = pdev->dev.parent; + /* ssi_pdev is the platform device for the SSI node that probed us */ + struct platform_device *ssi_pdev = + container_of(dev, struct platform_device, dev); + struct device_node *np = ssi_pdev->dev.of_node; + struct device_node *codec_np = NULL; + struct platform_device *sound_device = NULL; + struct machine_data *mdata; + int ret = -ENODEV; + const char *sprop; + const u32 *iprop; + + /* Find the codec node for this SSI. */ + codec_np = of_parse_phandle(np, "codec-handle", 0); + if (!codec_np) { + dev_err(dev, "could not find codec node\n"); + return -EINVAL; + } + + mdata = kzalloc(sizeof(struct machine_data), GFP_KERNEL); + if (!mdata) { + ret = -ENOMEM; + goto error_put; + } + + mdata->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev); + mdata->dai[0].ops = &p1022_ds_ops; + + /* Determine the codec name, it will be used as the codec DAI name */ + ret = codec_node_dev_name(codec_np, mdata->codec_name, DAI_NAME_SIZE); + if (ret) { + dev_err(&pdev->dev, "invalid codec node %s\n", + codec_np->full_name); + ret = -EINVAL; + goto error; + } + mdata->dai[0].codec_name = mdata->codec_name; + + /* We register two DAIs per SSI, one for playback and the other for + * capture. We support codecs that have separate DAIs for both playback + * and capture. + */ + memcpy(&mdata->dai[1], &mdata->dai[0], sizeof(struct snd_soc_dai_link)); + + /* The DAI names from the codec (snd_soc_dai_driver.name) */ + mdata->dai[0].codec_dai_name = "wm8776-hifi-playback"; + mdata->dai[1].codec_dai_name = "wm8776-hifi-capture"; + + /* Get the device ID */ + iprop = of_get_property(np, "cell-index", NULL); + if (!iprop) { + dev_err(&pdev->dev, "cell-index property not found\n"); + ret = -EINVAL; + goto error; + } + mdata->ssi_id = *iprop; + + /* Get the serial format and clock direction. */ + sprop = of_get_property(np, "fsl,mode", NULL); + if (!sprop) { + dev_err(&pdev->dev, "fsl,mode property not found\n"); + ret = -EINVAL; + goto error; + } + + if (strcasecmp(sprop, "i2s-slave") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_I2S; + mdata->codec_clk_direction = SND_SOC_CLOCK_OUT; + mdata->cpu_clk_direction = SND_SOC_CLOCK_IN; + + /* In i2s-slave mode, the codec has its own clock source, so we + * need to get the frequency from the device tree and pass it to + * the codec driver. + */ + iprop = of_get_property(codec_np, "clock-frequency", NULL); + if (!iprop || !*iprop) { + dev_err(&pdev->dev, "codec bus-frequency " + "property is missing or invalid\n"); + ret = -EINVAL; + goto error; + } + mdata->clk_frequency = *iprop; + } else if (strcasecmp(sprop, "i2s-master") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_I2S; + mdata->codec_clk_direction = SND_SOC_CLOCK_IN; + mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else if (strcasecmp(sprop, "lj-slave") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_LEFT_J; + mdata->codec_clk_direction = SND_SOC_CLOCK_OUT; + mdata->cpu_clk_direction = SND_SOC_CLOCK_IN; + } else if (strcasecmp(sprop, "lj-master") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_LEFT_J; + mdata->codec_clk_direction = SND_SOC_CLOCK_IN; + mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else if (strcasecmp(sprop, "rj-slave") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_RIGHT_J; + mdata->codec_clk_direction = SND_SOC_CLOCK_OUT; + mdata->cpu_clk_direction = SND_SOC_CLOCK_IN; + } else if (strcasecmp(sprop, "rj-master") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_RIGHT_J; + mdata->codec_clk_direction = SND_SOC_CLOCK_IN; + mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else if (strcasecmp(sprop, "ac97-slave") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_AC97; + mdata->codec_clk_direction = SND_SOC_CLOCK_OUT; + mdata->cpu_clk_direction = SND_SOC_CLOCK_IN; + } else if (strcasecmp(sprop, "ac97-master") == 0) { + mdata->dai_format = SND_SOC_DAIFMT_AC97; + mdata->codec_clk_direction = SND_SOC_CLOCK_IN; + mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else { + dev_err(&pdev->dev, + "unrecognized fsl,mode property '%s'\n", sprop); + ret = -EINVAL; + goto error; + } + + if (!mdata->clk_frequency) { + dev_err(&pdev->dev, "unknown clock frequency\n"); + ret = -EINVAL; + goto error; + } + + /* Find the playback DMA channel to use. */ + mdata->dai[0].platform_name = mdata->platform_name[0]; + ret = get_dma_channel(np, "fsl,playback-dma", &mdata->dai[0], + &mdata->dma_channel_id[0], + &mdata->dma_id[0]); + if (ret) { + dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n"); + goto error; + } + + /* Find the capture DMA channel to use. */ + mdata->dai[1].platform_name = mdata->platform_name[1]; + ret = get_dma_channel(np, "fsl,capture-dma", &mdata->dai[1], + &mdata->dma_channel_id[1], + &mdata->dma_id[1]); + if (ret) { + dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n"); + goto error; + } + + /* Initialize our DAI data structure. */ + mdata->dai[0].stream_name = "playback"; + mdata->dai[1].stream_name = "capture"; + mdata->dai[0].name = mdata->dai[0].stream_name; + mdata->dai[1].name = mdata->dai[1].stream_name; + + mdata->card.probe = p1022_ds_machine_probe; + mdata->card.remove = p1022_ds_machine_remove; + mdata->card.name = pdev->name; /* The platform driver name */ + mdata->card.num_links = 2; + mdata->card.dai_link = mdata->dai; + + /* Allocate a new audio platform device structure */ + sound_device = platform_device_alloc("soc-audio", -1); + if (!sound_device) { + dev_err(&pdev->dev, "platform device alloc failed\n"); + ret = -ENOMEM; + goto error; + } + + /* Associate the card data with the sound device */ + platform_set_drvdata(sound_device, &mdata->card); + + /* Register with ASoC */ + ret = platform_device_add(sound_device); + if (ret) { + dev_err(&pdev->dev, "platform device add failed\n"); + goto error; + } + + of_node_put(codec_np); + + return 0; + +error: + if (sound_device) + platform_device_unregister(sound_device); + + kfree(mdata); +error_put: + of_node_put(codec_np); + return ret; +} + +/** + * p1022_ds_remove: remove the platform device + * + * This function is called when the platform device is removed. + */ +static int __devexit p1022_ds_remove(struct platform_device *pdev) +{ + struct platform_device *sound_device = dev_get_drvdata(&pdev->dev); + struct snd_soc_card *card = platform_get_drvdata(sound_device); + struct machine_data *mdata = + container_of(card, struct machine_data, card); + + platform_device_unregister(sound_device); + + kfree(mdata); + sound_device->dev.platform_data = NULL; + + dev_set_drvdata(&pdev->dev, NULL); + + return 0; +} + +static struct platform_driver p1022_ds_driver = { + .probe = p1022_ds_probe, + .remove = __devexit_p(p1022_ds_remove), + .driver = { + /* The name must match the 'model' property in the device tree, + * in lowercase letters, but only the part after that last + * comma. This is because some model properties have a "fsl," + * prefix. + */ + .name = "snd-soc-p1022", + .owner = THIS_MODULE, + }, +}; + +/** + * p1022_ds_init: machine driver initialization. + * + * This function is called when this module is loaded. + */ +static int __init p1022_ds_init(void) +{ + struct device_node *guts_np; + struct resource res; + + pr_info("Freescale P1022 DS ALSA SoC machine driver\n"); + + /* Get the physical address of the global utilities registers */ + guts_np = of_find_compatible_node(NULL, NULL, "fsl,p1022-guts"); + if (of_address_to_resource(guts_np, 0, &res)) { + pr_err("p1022-ds: missing/invalid global utilities node\n"); + return -EINVAL; + } + guts_phys = res.start; + of_node_put(guts_np); + + return platform_driver_register(&p1022_ds_driver); +} + +/** + * p1022_ds_exit: machine driver exit + * + * This function is called when this driver is unloaded. + */ +static void __exit p1022_ds_exit(void) +{ + platform_driver_unregister(&p1022_ds_driver); +} + +module_init(p1022_ds_init); +module_exit(p1022_ds_exit); + +MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); +MODULE_DESCRIPTION("Freescale P1022 DS ALSA SoC machine driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/fsl/pcm030-audio-fabric.c b/sound/soc/fsl/pcm030-audio-fabric.c index 6644cba..fe15bb2 100644 --- a/sound/soc/fsl/pcm030-audio-fabric.c +++ b/sound/soc/fsl/pcm030-audio-fabric.c @@ -32,21 +32,24 @@ #define DRV_NAME "pcm030-audio-fabric" -static struct snd_soc_device device; static struct snd_soc_card card; static struct snd_soc_dai_link pcm030_fabric_dai[] = { { .name = "AC97", .stream_name = "AC97 Analog", - .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI], - .cpu_dai = &psc_ac97_dai[MPC5200_AC97_NORMAL], + .codec_dai_name = "wm9712-hifi", + .cpu_dai_name = "mpc5200-psc-ac97.0", + .platform_name = "mpc5200-pcm-audio", + .codec_name = "wm9712-codec", }, { .name = "AC97", .stream_name = "AC97 IEC958", - .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX], - .cpu_dai = &psc_ac97_dai[MPC5200_AC97_SPDIF], + .codec_dai_name = "wm9712-aux", + .cpu_dai_name = "mpc5200-psc-ac97.1", + .platform_name = "mpc5200-pcm-audio", + ..codec_name = "wm9712-codec", }, }; @@ -58,22 +61,18 @@ static __init int pcm030_fabric_init(void) if (!of_machine_is_compatible("phytec,pcm030")) return -ENODEV; - card.platform = &mpc5200_audio_dma_platform; + card.name = "pcm030"; card.dai_link = pcm030_fabric_dai; card.num_links = ARRAY_SIZE(pcm030_fabric_dai); - device.card = &card; - device.codec_dev = &soc_codec_dev_wm9712; - pdev = platform_device_alloc("soc-audio", 1); if (!pdev) { pr_err("pcm030_fabric_init: platform_device_alloc() failed\n"); return -ENODEV; } - platform_set_drvdata(pdev, &device); - device.dev = &pdev->dev; + platform_set_drvdata(pdev, &card); rc = platform_device_add(pdev); if (rc) { diff --git a/sound/soc/fsl/soc-of-simple.c b/sound/soc/fsl/soc-of-simple.c deleted file mode 100644 index 3bc13fd..0000000 --- a/sound/soc/fsl/soc-of-simple.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * OF helpers for ALSA SoC Layer - * - * Copyright (C) 2008, Secret Lab Technologies Ltd. - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/pm.h> -#include <linux/bitops.h> -#include <linux/platform_device.h> -#include <linux/of.h> -#include <linux/slab.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> -#include <sound/soc-of-simple.h> -#include <sound/initval.h> - -MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("ALSA SoC OpenFirmware bindings"); - -static DEFINE_MUTEX(of_snd_soc_mutex); -static LIST_HEAD(of_snd_soc_device_list); -static int of_snd_soc_next_index; - -struct of_snd_soc_device { - int id; - struct list_head list; - struct snd_soc_device device; - struct snd_soc_card card; - struct snd_soc_dai_link dai_link; - struct platform_device *pdev; - struct device_node *platform_node; - struct device_node *codec_node; -}; - -static struct snd_soc_ops of_snd_soc_ops = { -}; - -static struct of_snd_soc_device * -of_snd_soc_get_device(struct device_node *codec_node) -{ - struct of_snd_soc_device *of_soc; - - list_for_each_entry(of_soc, &of_snd_soc_device_list, list) { - if (of_soc->codec_node == codec_node) - return of_soc; - } - - of_soc = kzalloc(sizeof(struct of_snd_soc_device), GFP_KERNEL); - if (!of_soc) - return NULL; - - /* Initialize the structure and add it to the global list */ - of_soc->codec_node = codec_node; - of_soc->id = of_snd_soc_next_index++; - of_soc->card.dai_link = &of_soc->dai_link; - of_soc->card.num_links = 1; - of_soc->device.card = &of_soc->card; - of_soc->dai_link.ops = &of_snd_soc_ops; - list_add(&of_soc->list, &of_snd_soc_device_list); - - return of_soc; -} - -static void of_snd_soc_register_device(struct of_snd_soc_device *of_soc) -{ - struct platform_device *pdev; - int rc; - - /* Only register the device if both the codec and platform have - * been registered */ - if ((!of_soc->device.codec_data) || (!of_soc->platform_node)) - return; - - pr_info("platform<-->codec match achieved; registering machine\n"); - - pdev = platform_device_alloc("soc-audio", of_soc->id); - if (!pdev) { - pr_err("of_soc: platform_device_alloc() failed\n"); - return; - } - - pdev->dev.platform_data = of_soc; - platform_set_drvdata(pdev, &of_soc->device); - of_soc->device.dev = &pdev->dev; - - /* The ASoC device is complete; register it */ - rc = platform_device_add(pdev); - if (rc) { - pr_err("of_soc: platform_device_add() failed\n"); - return; - } - -} - -int of_snd_soc_register_codec(struct snd_soc_codec_device *codec_dev, - void *codec_data, struct snd_soc_dai *dai, - struct device_node *node) -{ - struct of_snd_soc_device *of_soc; - int rc = 0; - - pr_info("registering ASoC codec driver: %s\n", node->full_name); - - mutex_lock(&of_snd_soc_mutex); - of_soc = of_snd_soc_get_device(node); - if (!of_soc) { - rc = -ENOMEM; - goto out; - } - - /* Store the codec data */ - of_soc->device.codec_data = codec_data; - of_soc->device.codec_dev = codec_dev; - of_soc->dai_link.name = (char *)node->name; - of_soc->dai_link.stream_name = (char *)node->name; - of_soc->dai_link.codec_dai = dai; - - /* Now try to register the SoC device */ - of_snd_soc_register_device(of_soc); - - out: - mutex_unlock(&of_snd_soc_mutex); - return rc; -} -EXPORT_SYMBOL_GPL(of_snd_soc_register_codec); - -int of_snd_soc_register_platform(struct snd_soc_platform *platform, - struct device_node *node, - struct snd_soc_dai *cpu_dai) -{ - struct of_snd_soc_device *of_soc; - struct device_node *codec_node; - const phandle *handle; - int len, rc = 0; - - pr_info("registering ASoC platform driver: %s\n", node->full_name); - - handle = of_get_property(node, "codec-handle", &len); - if (!handle || len < sizeof(handle)) - return -ENODEV; - codec_node = of_find_node_by_phandle(*handle); - if (!codec_node) - return -ENODEV; - pr_info("looking for codec: %s\n", codec_node->full_name); - - mutex_lock(&of_snd_soc_mutex); - of_soc = of_snd_soc_get_device(codec_node); - if (!of_soc) { - rc = -ENOMEM; - goto out; - } - - of_soc->platform_node = node; - of_soc->dai_link.cpu_dai = cpu_dai; - of_soc->card.platform = platform; - of_soc->card.name = of_soc->dai_link.cpu_dai->name; - - /* Now try to register the SoC device */ - of_snd_soc_register_device(of_soc); - - out: - mutex_unlock(&of_snd_soc_mutex); - return rc; -} -EXPORT_SYMBOL_GPL(of_snd_soc_register_platform); |
