/**
- * 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;
}
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;
}
* 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;
}
* 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;
}
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;
}
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(&pdev->dev, sound_device);
- 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");
projects / mv-sheeva.git / blobdiff