Update the Freescale MPC8610 HPCD audio drivers to support the new multiple- component architecture in ASoC.

Signed-off-by: Timur Tabi timur@freescale.com --- sound/soc/fsl/fsl_dma.c | 42 +-- sound/soc/fsl/fsl_dma.h | 1 + sound/soc/fsl/fsl_ssi.c | 88 ++-- sound/soc/fsl/fsl_ssi.h | 23 - sound/soc/fsl/mpc8610_hpcd.c | 1188 ++++++++++++++++++++---------------------- 5 files changed, 637 insertions(+), 705 deletions(-) rewrite sound/soc/fsl/mpc8610_hpcd.c (64%)

diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c index 857e9f7..326b852 100644 --- a/sound/soc/fsl/fsl_dma.c +++ b/sound/soc/fsl/fsl_dma.c @@ -15,7 +15,6 @@

#include <linux/module.h> #include <linux/init.h> -#include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/delay.h> @@ -844,6 +843,7 @@ EXPORT_SYMBOL_GPL(fsl_soc_platform); int fsl_dma_configure(struct fsl_dma_info *dma_info) { static int initialized; + int ret;

/* We only support one DMA controller for now */ if (initialized) @@ -859,42 +859,16 @@ int fsl_dma_configure(struct fsl_dma_info *dma_info) dma_global_data.assigned[1] = 0;

initialized = 1; - return 1; -} -EXPORT_SYMBOL_GPL(fsl_dma_configure); - -static int __devinit fsl_soc_platform_probe(struct platform_device *pdev) -{ - return snd_soc_register_platform(&pdev->dev, -1, &fsl_soc_platform); -} - -static int __devexit fsl_soc_platform_remove(struct platform_device *pdev) -{ - snd_soc_unregister_platform(&pdev->dev, -1); - return 0; -}

-static struct platform_driver fsl_pcm_driver = { - .driver = { - .name = "fsl-pcm-audio", - .owner = THIS_MODULE, - }, - - .probe = fsl_soc_platform_probe, - .remove = __devexit_p(fsl_soc_platform_remove), -}; - -static int __init snd_fsl_pcm_init(void) -{ - return platform_driver_register(&fsl_pcm_driver); -} -module_init(snd_fsl_pcm_init); + ret = snd_soc_register_platform(dma_info->dev, -1, &fsl_soc_platform); + if (ret) { + dev_err(dma_info->dev, "could not register platform"); + return 0; + }

-static void __exit snd_fsl_pcm_exit(void) -{ - platform_driver_unregister(&fsl_pcm_driver); + return 1; } -module_exit(snd_fsl_pcm_exit); +EXPORT_SYMBOL(fsl_dma_configure);

MODULE_AUTHOR("Timur Tabi timur@freescale.com"); MODULE_DESCRIPTION("Freescale Elo DMA ASoC PCM module"); diff --git a/sound/soc/fsl/fsl_dma.h b/sound/soc/fsl/fsl_dma.h index 253bd3c..62bb617 100644 --- a/sound/soc/fsl/fsl_dma.h +++ b/sound/soc/fsl/fsl_dma.h @@ -140,6 +140,7 @@ struct fsl_dma_info { dma_addr_t ssi_srx_phys; struct ccsr_dma_channel __iomem *dma_channel[2]; unsigned int dma_irq[2]; + struct device *dev; };

extern struct snd_soc_platform_driver fsl_soc_platform; diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 780e243..99cc662 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -14,6 +14,7 @@ #include <linux/interrupt.h> #include <linux/device.h> #include <linux/delay.h> +#include <linux/of_platform.h>

#include <sound/core.h> #include <sound/pcm.h> @@ -86,12 +87,12 @@ */ struct fsl_ssi_private { char name[8]; + int id; 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; @@ -639,92 +640,115 @@ static ssize_t fsl_sysfs_ssi_show(struct device *dev, return length; }

-static int fsl_ssi_probe(struct platform_device *pdev) +static int __devinit fsl_ssi_probe(struct of_device *of_dev, + const struct of_device_id *match) { - struct fsl_ssi_info *ssi_info = dev_get_platdata(&pdev->dev); struct fsl_ssi_private *ssi_private; int ret = 0; struct device_attribute *dev_attr; + struct device_node *np = of_dev->node; + const u32 *prop; + int id; + struct resource res; + + /* We are only interested in SSIs with a codec phandle in them, so let's + * make sure this SSI has one. + */ + if (!of_get_property(np, "codec-handle", NULL)) + return -ENODEV;

ssi_private = kzalloc(sizeof(struct fsl_ssi_private), GFP_KERNEL); if (!ssi_private) { - dev_err(ssi_info->dev, "could not allocate DAI object\n"); + dev_err(&of_dev->dev, "could not allocate DAI object\n"); return -ENOMEM; }

dev_attr = &ssi_private->dev_attr;

- 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; + prop = of_get_property(np, "cell-index", NULL); + if (!prop) { + dev_err(&of_dev->dev, "node is missing cell-index property\n"); + return -ENODEV; + } + id = *prop; + + strcpy(ssi_private->name, "ssi"); + ssi_private->id = id; + ssi_private->ssi = of_iomap(np, 0); + of_address_to_resource(np, 0, &res); + ssi_private->ssi_phys = res.start; + ssi_private->irq = irq_of_parse_and_map(np, 0); + + if (of_find_property(np, "fsl,ssi-asynchronous", NULL)) + ssi_private->asynchronous = 1; + else + fsl_ssi_dai.symmetric_rates = 1;

/* Initialize the the device_attribute structure */ dev_attr->attr.name = "ssi-stats"; 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(&of_dev->dev, dev_attr); if (ret) { - dev_err(ssi_info->dev, "could not create sysfs %s file\n", + dev_err(&of_dev->dev, "could not create sysfs %s file\n", ssi_private->dev_attr.attr.name); kfree(ssi_private); return ret; }

- dev_set_drvdata(ssi_private->dev, ssi_private); + dev_set_drvdata(&of_dev->dev, ssi_private); fsl_ssi_dai.name = ssi_private->name; - fsl_ssi_dai.symmetric_rates = 1;

- ret = snd_soc_register_dai(ssi_private->dev, ssi_info->id, &fsl_ssi_dai); + ret = snd_soc_register_dai(&of_dev->dev, id, &fsl_ssi_dai); if (ret != 0) { - dev_err(ssi_info->dev, "failed to register DAI: %d\n", ret); + dev_err(&of_dev->dev, "failed to register DAI: %d\n", ret); kfree(ssi_private); return ret; }

- return ret; + return 0; }

/** * fsl_ssi_destroy_dai: destroy the snd_soc_dai object * - * This function undoes the operations of fsl_ssi_create_dai() + * This function undoes the operations of fsl_ssi_probe() */ -static int fsl_ssi_remove(struct platform_device *pdev) +static int fsl_ssi_remove(struct of_device *of_dev) { - struct fsl_ssi_private *ssi_private = dev_get_drvdata(&pdev->dev); - struct fsl_ssi_info *ssi_info = dev_get_platdata(&pdev->dev); - - device_remove_file(ssi_private->dev, &ssi_private->dev_attr); + struct fsl_ssi_private *ssi_private = dev_get_drvdata(&of_dev->dev);

- snd_soc_unregister_dai(&pdev->dev, ssi_info->id); + snd_soc_unregister_dai(&of_dev->dev, ssi_private->id); + device_remove_file(&of_dev->dev, &ssi_private->dev_attr);

kfree(ssi_private); return 0; }

-static struct platform_driver fsl_ssi_driver = { +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 = { + .name = "fsl-ssi-dai", + .match_table = fsl_ssi_ids, .probe = fsl_ssi_probe, - .remove = __devexit_p(fsl_ssi_remove), - .driver = { - .name = "fsl-ssi-dai", - .owner = THIS_MODULE, - }, + .remove = fsl_ssi_remove, };

static int __init fsl_ssi_init(void) { printk(KERN_INFO "Freescale Synchronous Serial Interface (SSI) ASoC Driver\n");

- return platform_driver_register(&fsl_ssi_driver); + return of_register_platform_driver(&fsl_ssi_driver); }

static void __exit fsl_ssi_exit(void) { - platform_driver_unregister(&fsl_ssi_driver); + of_unregister_platform_driver(&fsl_ssi_driver); }

module_init(fsl_ssi_init); diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index 965fd86..7cb229b 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -196,29 +196,6 @@ 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; -}; - extern struct snd_soc_dai_driver fsl_ssi_dai;

#endif diff --git a/sound/soc/fsl/mpc8610_hpcd.c b/sound/soc/fsl/mpc8610_hpcd.c dissimilarity index 64% index ad8d763..5276cbe 100644 --- a/sound/soc/fsl/mpc8610_hpcd.c +++ b/sound/soc/fsl/mpc8610_hpcd.c @@ -1,616 +1,572 @@ -/** - * Freescale MPC8610HPCD ALSA SoC Fabric 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. - */ - -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/of_device.h> -#include <linux/of_platform.h> -#include <sound/soc.h> -#include <asm/immap_86xx.h> - -#include "../codecs/cs4270.h" -#include "fsl_dma.h" -#include "fsl_ssi.h" - -/** - * mpc8610_hpcd_data: fabric-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_dai_link dai; - struct snd_soc_card machine; - 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 dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/ -}; - -/** - * mpc8610_hpcd_machine_probe: initalize the board - * - * This function is called when platform_device_add() is called. It 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 mpc8610_hpcd_data *machine_data = - sound_device->dev.platform_data; - - /* 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_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); - - switch (machine_data->ssi_id) { - case 0: - clrsetbits_be32(&machine_data->guts->pmuxcr, - CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI); - break; - case 1: - clrsetbits_be32(&machine_data->guts->pmuxcr, - CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI); - break; - } - - return 0; -} - -/** - * mpc8610_hpcd_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 mpc8610_hpcd_startup(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *codec_dai = rtd->codec_dai; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct mpc8610_hpcd_data *machine_data = - rtd->card->dev->platform_data; - 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); - 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"); - 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(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"); - return ret; - } - - return 0; -} - -/** - * mpc8610_hpcd_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. - */ -int mpc8610_hpcd_machine_remove(struct platform_device *sound_device) -{ - struct mpc8610_hpcd_data *machine_data = - sound_device->dev.platform_data; - - /* 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); - - switch (machine_data->ssi_id) { - case 0: - clrsetbits_be32(&machine_data->guts->pmuxcr, - CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA); - break; - case 1: - clrsetbits_be32(&machine_data->guts->pmuxcr, - CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA); - break; - } - - return 0; -} - -/** - * mpc8610_hpcd_ops: ASoC fabric driver operations - */ -static struct snd_soc_ops mpc8610_hpcd_ops = { - .startup = mpc8610_hpcd_startup, -}; - -/** - * mpc8610_hpcd_probe: OF probe function for the fabric driver - * - * This function gets called when an SSI node is found in the device tree. - * - * 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. - * - * FIXME: Currently, we only support one DMA controller, so if there are - * multiple SSI nodes with codecs, only the first will be supported. - * - * 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. - */ -static int mpc8610_hpcd_probe(struct of_device *ofdev, - const struct of_device_id *match) -{ - struct device_node *np = ofdev->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; - struct resource res; - 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; - - 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)); - - 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) - goto error; - - codec_np = of_find_node_by_phandle(*codec_ph); - if (!codec_np) - goto error; - - /* The MPC8610 HPCD only knows about the CS4270 codec, so reject - anything else. */ - if (!of_device_is_compatible(codec_np, "cirrus,cs4270")) - goto error; - - /* Get the device ID */ - iprop = of_get_property(np, "cell-index", NULL); - if (!iprop) { - dev_err(&ofdev->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"); - ret = -EINVAL; - goto error; - } - - if (strcasecmp(sprop, "i2s-slave") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_I2S; - 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 - * 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"); - ret = -EINVAL; - goto error; - } - machine_data->clk_frequency = *iprop; - } else if (strcasecmp(sprop, "i2s-master") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_I2S; - machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; - machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; - } else if (strcasecmp(sprop, "lj-slave") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; - machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; - machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; - } else if (strcasecmp(sprop, "lj-master") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; - machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; - machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; - } else if (strcasecmp(sprop, "rj-slave") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; - machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; - machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; - } else if (strcasecmp(sprop, "rj-master") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; - machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; - machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; - } else if (strcasecmp(sprop, "ac97-slave") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_AC97; - machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; - machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; - } else if (strcasecmp(sprop, "ac97-master") == 0) { - machine_data->dai_format = SND_SOC_DAIFMT_AC97; - 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); - ret = -EINVAL; - goto error; - } - - if (!machine_data->clk_frequency) { - dev_err(&ofdev->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); - 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; - 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; - 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"; - - iprop = of_get_property(codec_np, "reg", NULL); - if (!iprop) { - dev_err(&ofdev->dev, "codec node is missing 'reg' property\n"); - goto error; - } - machine_data->dai.codec_id = *iprop; - - machine_data->dai.cpu_dai_drv = &fsl_ssi_dai; - machine_data->dai.codec_dai_drv = &cs4270_dai; /* The codec_dai we want */ - machine_data->dai.codec_drv = &soc_codec_device_cs4270; - machine_data->dai.ops = &mpc8610_hpcd_ops; - machine_data->dai.platform_drv = &fsl_soc_platform; - - 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; - - /* 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"); - ret = -ENOMEM; - goto error; - } - - /* Set the platform device and ASoC device to point to each other */ - platform_set_drvdata(sound_device, &machine_data->machine); - - /* Tell ASoC to probe us. This will call mpc8610_hpcd_machine.probe(), - if it exists. */ - ret = platform_device_add(sound_device); - - if (ret) { - dev_err(&ofdev->dev, "platform device add failed\n"); - goto error; - } - - dev_set_drvdata(&ofdev->dev, sound_device); - - 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 (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 - * - * This function is called when the OF device is removed. - */ -static int mpc8610_hpcd_remove(struct of_device *ofdev) -{ - struct platform_device *sound_device = dev_get_drvdata(&ofdev->dev); - struct mpc8610_hpcd_data *machine_data = - sound_device->dev.platform_data; - - platform_device_unregister(sound_device); - - 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); - - 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 = { - .owner = THIS_MODULE, - .name = "mpc8610_hpcd", - .match_table = mpc8610_hpcd_match, - .probe = mpc8610_hpcd_probe, - .remove = mpc8610_hpcd_remove, -}; - -/** - * mpc8610_hpcd_init: fabric 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"); - - ret = of_register_platform_driver(&mpc8610_hpcd_of_driver); - - if (ret) - printk(KERN_ERR - "mpc8610-hpcd: failed to register platform driver\n"); - - return ret; -} - -/** - * mpc8610_hpcd_exit: fabric 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); -} - -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"); +/** + * Freescale MPC8610HPCD ALSA SoC Fabric driver + * + * Author: Timur Tabi timur@freescale.com + * + * 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/module.h> +#include <linux/interrupt.h> +#include <linux/of_device.h> +#include <sound/soc.h> +#include <asm/immap_86xx.h> + +#include "../codecs/cs4270.h" +#include "fsl_dma.h" +#include "fsl_ssi.h" + +/** + * mpc8610_hpcd_data: fabric-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_dai_link dai; + 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; + unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */ + unsigned int dma_id; /* 0 = DMA1, 1 = DMA2, etc */ + unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/ + char dai_name[32]; +}; + +/** + * mpc8610_hpcd_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 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 = + container_of(card, struct mpc8610_hpcd_data, card); + + /* 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_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); + + switch (machine_data->ssi_id) { + case 0: + clrsetbits_be32(&machine_data->guts->pmuxcr, + CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI); + break; + case 1: + clrsetbits_be32(&machine_data->guts->pmuxcr, + CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI); + break; + } + + return 0; +} + +/** + * mpc8610_hpcd_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 mpc8610_hpcd_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct mpc8610_hpcd_data *machine_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(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); + if (ret < 0) { + dev_err(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(dev, "could not set CPU driver clock parameters\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(codec_dai, 0, machine_data->clk_frequency, + machine_data->codec_clk_direction); + if (ret < 0) { + dev_err(dev, "could not set codec driver clock params\n"); + return ret; + } + + return 0; +} + +/** + * mpc8610_hpcd_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 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 = + container_of(card, struct mpc8610_hpcd_data, card); + + /* 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); + + switch (machine_data->ssi_id) { + case 0: + clrsetbits_be32(&machine_data->guts->pmuxcr, + CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA); + break; + case 1: + clrsetbits_be32(&machine_data->guts->pmuxcr, + CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA); + break; + } + + return 0; +} + +/** + * mpc8610_hpcd_ops: ASoC fabric driver operations + */ +static struct snd_soc_ops mpc8610_hpcd_ops = { + .startup = mpc8610_hpcd_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) +{ + 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; +} + +/** + * mpc8610_hpcd_probe: platform probe function for the fabric driver + * + * 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. + * + * FIXME: Currently, we only support one DMA controller, so if there are + * multiple SSI nodes with codecs, only the first will be supported. We have no + * mechanism for assigning DMA controllers and channels to the individual + * SSI devices. + */ +static int mpc8610_hpcd_probe(struct platform_device *pdev) +{ + struct device_node *np = NULL; + struct device_node *codec_np = NULL; + struct device_node *dma_np = NULL; + struct device_node *dma_channel_np = NULL; + struct device_node *guts_np; + struct platform_device *sound_device; + struct mpc8610_hpcd_data *machine_data; + int id; + struct fsl_dma_info dma_info; + int ret = -ENODEV; + + /* Map the global utilities registers. */ + guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts"); + if (!guts_np) { + dev_err(&pdev->dev, "missing global utilities node\n"); + return -EINVAL; + } + + while ((np = of_find_compatible_node(np, NULL, "fsl,mpc8610-ssi"))) { + const char *sprop; + const u32 *iprop; + struct resource res; + + sound_device = NULL; + + machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), + GFP_KERNEL); + if (!machine_data) + return -ENOMEM; + + memset(&dma_info, 0, sizeof(dma_info)); + + /* 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) + continue; + + /* 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; + } + machine_data->ssi_id = *iprop; + 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) { + machine_data->dai_format = SND_SOC_DAIFMT_I2S; + 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 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; + } + machine_data->clk_frequency = *iprop; + } else if (strcasecmp(sprop, "i2s-master") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_I2S; + machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else if (strcasecmp(sprop, "lj-slave") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; + machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; + } else if (strcasecmp(sprop, "lj-master") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; + machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else if (strcasecmp(sprop, "rj-slave") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; + machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; + } else if (strcasecmp(sprop, "rj-master") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; + machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else if (strcasecmp(sprop, "ac97-slave") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_AC97; + machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; + } else if (strcasecmp(sprop, "ac97-master") == 0) { + machine_data->dai_format = SND_SOC_DAIFMT_AC97; + machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; + machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; + } else { + dev_err(&pdev->dev, + "unrecognized fsl,mode property '%s'\n", sprop); + ret = -EINVAL; + goto error; + } + + if (!machine_data->clk_frequency) { + 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); + if (ret || !res.start) { + dev_err(&pdev->dev, "could not obtain SSI address\n"); + goto error; + } + dma_info.ssi_stx_phys = res.start + + offsetof(struct ccsr_ssi, stx0); + dma_info.ssi_srx_phys = res.start + + offsetof(struct ccsr_ssi, srx0); + + /* Find the playback DMA channelto use. */ + dma_channel_np = + get_node_by_phandle_name(np, "fsl,playback-dma", + "fsl,ssi-dma-channel"); + if (!dma_channel_np) { + dev_err(&pdev->dev, "missing or invalid phandle\n"); + ret = -EINVAL; + goto error; + } + dma_info.dma_channel[0] = of_iomap(dma_channel_np, 0); + + iprop = of_get_property(dma_channel_np, "cell-index", NULL); + if (!iprop) { + dev_err(&pdev->dev, "missing cell-index property\n"); + ret = -EINVAL; + goto error; + } + machine_data->dma_channel_id[0] = *iprop; + of_node_put(dma_channel_np); + + /* Find the capture DMA channelto use. */ + dma_channel_np = + get_node_by_phandle_name(np, "fsl,capture-dma", + "fsl,ssi-dma-channel"); + if (!dma_channel_np) { + dev_err(&pdev->dev, "missing or invalid phandle\n"); + ret = -EINVAL; + goto error; + } + dma_info.dma_channel[1] = of_iomap(dma_channel_np, 0); + + iprop = of_get_property(dma_channel_np, "cell-index", NULL); + if (!iprop) { + dev_err(&pdev->dev, "missing cell-index property\n"); + ret = -EINVAL; + goto error; + } + machine_data->dma_channel_id[1] = *iprop; + + /* Find the cell-index of the parent DMA node. We assume + * that both DMA channels are part of the same DMA + * controller, but that doesn't necessarily have to be true. + */ + dma_np = of_get_parent(dma_channel_np); + of_node_put(dma_channel_np); + dma_channel_np = NULL; + if (!dma_np) { + dev_err(&pdev->dev, "missing parent DMA node\n"); + ret = -EINVAL; + goto error; + } + iprop = of_get_property(dma_np, "cell-index", NULL); + if (!iprop) { + dev_err(&pdev->dev, "missing cell-index property\n"); + ret = -EINVAL; + goto error; + } + machine_data->dma_id = *iprop; + of_node_put(dma_np); + dma_np = NULL; + + /* Map the global utilities registers */ + machine_data->guts = of_iomap(guts_np, 0); + if (!machine_data->guts) { + dev_err(&pdev->dev, + "could not map global utilities node\n"); + ret = -EINVAL; + goto error; + } + + dma_info.dev = &pdev->dev; + + /* We have the DMA information, so tell the DMA driver */ + if (!fsl_dma_configure(&dma_info)) { + dev_err(&pdev->dev, + "could not instantiate DMA device\n"); + ret = -EBUSY; + goto error; + } + + /* Initialize our DAI data structure. */ + iprop = of_get_property(codec_np, "reg", NULL); + if (!iprop) { + dev_err(&pdev->dev, + "codec node is missing 'reg' property\n"); + goto error; + } + + machine_data->dai.codec_id = *iprop; + machine_data->dai.cpu_dai_id = id; + machine_data->dai.codec_dai_id = 0; + machine_data->dai.platform_id = 0; + + /* Store the codec name as the DAI name */ + of_modalias_node(codec_np, machine_data->dai_name, + sizeof(machine_data->dai_name)); + of_node_put(codec_np); + codec_np = NULL; + machine_data->dai.name = machine_data->dai_name; + machine_data->dai.stream_name = machine_data->dai_name; + + machine_data->dai.cpu_dai_drv = &fsl_ssi_dai; + machine_data->dai.codec_dai_drv = &cs4270_dai; + machine_data->dai.codec_drv = &soc_codec_device_cs4270; + machine_data->dai.ops = &mpc8610_hpcd_ops; + machine_data->dai.platform_drv = &fsl_soc_platform; + + machine_data->card.probe = mpc8610_hpcd_machine_probe; + machine_data->card.remove = mpc8610_hpcd_machine_remove; + machine_data->card.name = "MPC8610 HPCD"; + machine_data->card.num_links = 1; + 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(&pdev->dev, "platform device alloc failed\n"); + ret = -ENOMEM; + goto error; + } + + /* Associate the card data with the sound device */ + platform_set_drvdata(sound_device, &machine_data->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(guts_np); + return 0; + +error: + of_node_put(codec_np); + of_node_put(dma_np); + of_node_put(guts_np); + of_node_put(dma_channel_np); + + if (sound_device) + platform_device_unregister(sound_device); + + 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 (machine_data->guts) + iounmap(machine_data->guts); + + kfree(machine_data); + + return ret; +} + +/** + * mpc8610_hpcd_remove: remove the OF device + * + * This function is called when the OF device is removed. + */ +static int mpc8610_hpcd_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 mpc8610_hpcd_data *machine_data = + container_of(card, struct mpc8610_hpcd_data, card); + + platform_device_unregister(sound_device); + + if (machine_data->guts) + iounmap(machine_data->guts); + + kfree(machine_data); + sound_device->dev.platform_data = NULL; + + dev_set_drvdata(&pdev->dev, NULL); + + return 0; +} + +static struct platform_driver mpc8610_hpcd_driver = { + .probe = mpc8610_hpcd_probe, + .remove = __devexit_p(mpc8610_hpcd_remove), + .driver = { + .name = "snd-soc-mpc8610-hpcd", + .owner = THIS_MODULE, + }, +}; + +/** + * mpc8610_hpcd_init: fabric driver initialization. + * + * This function is called when this module is loaded. + */ +static int __init mpc8610_hpcd_init(void) +{ + printk(KERN_INFO "Freescale MPC8610 HPCD ALSA SoC fabric driver\n"); + + return platform_driver_register(&mpc8610_hpcd_driver); +} + +/** + * mpc8610_hpcd_exit: fabric driver exit + * + * This function is called when this driver is unloaded. + */ +static void __exit mpc8610_hpcd_exit(void) +{ + 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");