+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-//
-// Freescale MPC8610HPCD ALSA SoC Machine driver
-//
-// Author: Timur Tabi <timur@freescale.com>
-//
-// Copyright 2007-2010 Freescale Semiconductor, Inc.
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/fsl/guts.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/slab.h>
-#include <sound/soc.h>
-
-#include "fsl_dma.h"
-#include "fsl_ssi.h"
-#include "fsl_utils.h"
-
-/* There's only one global utilities register */
-static phys_addr_t guts_phys;
-
-/**
- * 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_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_dai_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 used to initialize the board-specific hardware.
- *
- * Here we program the DMACR and PMUXCR registers.
- */
-static int mpc8610_hpcd_machine_probe(struct snd_soc_card *card)
-{
- struct mpc8610_hpcd_data *machine_data =
- container_of(card, struct mpc8610_hpcd_data, card);
- struct ccsr_guts __iomem *guts;
-
- guts = ioremap(guts_phys, sizeof(struct ccsr_guts));
- if (!guts) {
- dev_err(card->dev, "could not map global utilities\n");
- return -ENOMEM;
- }
-
- /* 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(&guts->pmuxcr,
- CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI);
- break;
- case 1:
- clrsetbits_be32(&guts->pmuxcr,
- CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI);
- break;
- }
-
- iounmap(guts);
-
- 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 = snd_soc_substream_to_rtd(substream);
- 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 codec driver what the serial protocol is. */
- ret = snd_soc_dai_set_fmt(snd_soc_rtd_to_codec(rtd, 0), machine_data->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(snd_soc_rtd_to_codec(rtd, 0), 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 snd_soc_card *card)
-{
- struct mpc8610_hpcd_data *machine_data =
- container_of(card, struct mpc8610_hpcd_data, card);
- struct ccsr_guts __iomem *guts;
-
- guts = ioremap(guts_phys, sizeof(struct ccsr_guts));
- if (!guts) {
- dev_err(card->dev, "could not map global utilities\n");
- return -ENOMEM;
- }
-
- /* Restore the signal routing */
-
- 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(&guts->pmuxcr,
- CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA);
- break;
- case 1:
- clrsetbits_be32(&guts->pmuxcr,
- CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA);
- break;
- }
-
- iounmap(guts);
-
- return 0;
-}
-
-/**
- * mpc8610_hpcd_ops: ASoC machine driver operations
- */
-static const struct snd_soc_ops mpc8610_hpcd_ops = {
- .startup = mpc8610_hpcd_startup,
-};
-
-/**
- * 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 = to_platform_device(dev);
- struct device_node *np = ssi_pdev->dev.of_node;
- struct device_node *codec_np = NULL;
- struct mpc8610_hpcd_data *machine_data;
- struct snd_soc_dai_link_component *comp;
- int ret;
- 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, "invalid codec node\n");
- return -EINVAL;
- }
-
- machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), GFP_KERNEL);
- if (!machine_data) {
- ret = -ENOMEM;
- goto error_alloc;
- }
-
- comp = devm_kzalloc(&pdev->dev, 6 * sizeof(*comp), GFP_KERNEL);
- if (!comp) {
- ret = -ENOMEM;
- goto error_alloc;
- }
-
- machine_data->dai[0].cpus = &comp[0];
- machine_data->dai[0].codecs = &comp[1];
- machine_data->dai[0].platforms = &comp[2];
-
- machine_data->dai[0].num_cpus = 1;
- machine_data->dai[0].num_codecs = 1;
- machine_data->dai[0].num_platforms = 1;
-
- machine_data->dai[1].cpus = &comp[3];
- machine_data->dai[1].codecs = &comp[4];
- machine_data->dai[1].platforms = &comp[5];
-
- machine_data->dai[1].num_cpus = 1;
- machine_data->dai[1].num_codecs = 1;
- machine_data->dai[1].num_platforms = 1;
-
- machine_data->dai[0].cpus->dai_name = dev_name(&ssi_pdev->dev);
- machine_data->dai[0].ops = &mpc8610_hpcd_ops;
-
- /* ASoC core can match codec with device node */
- machine_data->dai[0].codecs->of_node = codec_np;
-
- /* The DAI name from the codec (snd_soc_dai_driver.name) */
- machine_data->dai[0].codecs->dai_name = "cs4270-hifi";
-
- /* 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(&pdev->dev, "cell-index property not found\n");
- ret = -EINVAL;
- goto error;
- }
- machine_data->ssi_id = be32_to_cpup(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 | SND_SOC_DAIFMT_CBP_CFP;
- 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 = be32_to_cpup(iprop);
- } else if (strcasecmp(sprop, "i2s-master") == 0) {
- machine_data->dai_format =
- SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBC_CFC;
- 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 | SND_SOC_DAIFMT_CBP_CFP;
- 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 | SND_SOC_DAIFMT_CBC_CFC;
- 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 | SND_SOC_DAIFMT_CBP_CFP;
- 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 | SND_SOC_DAIFMT_CBC_CFC;
- 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 | SND_SOC_DAIFMT_CBP_CFP;
- 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 | SND_SOC_DAIFMT_CBC_CFC;
- 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;
- }
-
- /* Find the playback DMA channel to use. */
- machine_data->dai[0].platforms->name = machine_data->platform_name[0];
- ret = fsl_asoc_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(&pdev->dev, "missing/invalid playback DMA phandle\n");
- goto error;
- }
-
- /* Find the capture DMA channel to use. */
- machine_data->dai[1].platforms->name = machine_data->platform_name[1];
- ret = fsl_asoc_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. */
- 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->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.owner = THIS_MODULE;
- machine_data->card.dev = &pdev->dev;
- machine_data->card.num_links = 2;
- machine_data->card.dai_link = machine_data->dai;
-
- /* Register with ASoC */
- ret = snd_soc_register_card(&machine_data->card);
- if (ret) {
- dev_err(&pdev->dev, "could not register card\n");
- goto error;
- }
-
- of_node_put(codec_np);
-
- return 0;
-
-error:
- kfree(machine_data);
-error_alloc:
- of_node_put(codec_np);
- return ret;
-}
-
-/**
- * mpc8610_hpcd_remove: remove the platform device
- *
- * This function is called when the platform device is removed.
- */
-static void mpc8610_hpcd_remove(struct platform_device *pdev)
-{
- struct snd_soc_card *card = platform_get_drvdata(pdev);
- struct mpc8610_hpcd_data *machine_data =
- container_of(card, struct mpc8610_hpcd_data, card);
-
- snd_soc_unregister_card(card);
- kfree(machine_data);
-}
-
-static struct platform_driver mpc8610_hpcd_driver = {
- .probe = mpc8610_hpcd_probe,
- .remove_new = mpc8610_hpcd_remove,
- .driver = {
- /* The name must match 'compatible' property in the device tree,
- * in lowercase letters.
- */
- .name = "snd-soc-mpc8610hpcd",
- },
-};
-
-/**
- * mpc8610_hpcd_init: machine driver initialization.
- *
- * This function is called when this module is loaded.
- */
-static int __init mpc8610_hpcd_init(void)
-{
- struct device_node *guts_np;
- struct resource res;
-
- pr_info("Freescale MPC8610 HPCD ALSA SoC machine 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");
- of_node_put(guts_np);
- return -EINVAL;
- }
- guts_phys = res.start;
- of_node_put(guts_np);
-
- return platform_driver_register(&mpc8610_hpcd_driver);
-}
-
-/**
- * mpc8610_hpcd_exit: machine 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 machine driver");
-MODULE_LICENSE("GPL v2");
projects / linux-2.6-microblaze.git / commitdiff