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ASoC: fsl-ssi: introduce SoC specific data

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Introduce a SoC data struct which contains the differences between
the different SoCs this driver supports. This makes it easy to support
more differences without having to introduce a new switch/case each
time.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Tested-By: Michael Grzeschik <mgr@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Sascha Hauer 2014-05-27 10:24:18 +02:00 committed by Mark Brown
parent b20e53a826
commit fcdbadef37
1 changed files with 58 additions and 69 deletions
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127
sound/soc/fsl/fsl_ssi.c
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@ -132,6 +132,12 @@ struct fsl_ssi_rxtx_reg_val {
struct fsl_ssi_reg_val tx;
};
struct fsl_ssi_soc_data {
bool imx;
bool offline_config;
u32 sisr_write_mask;
};
/**
* fsl_ssi_private: per-SSI private data
*
@ -153,7 +159,6 @@ struct fsl_ssi_private {
struct platform_device *pdev;
unsigned int dai_fmt;
enum fsl_ssi_type hw_type;
bool use_dma;
bool baudclk_locked;
bool use_dual_fifo;
@ -168,36 +173,10 @@ struct fsl_ssi_private {
struct fsl_ssi_rxtx_reg_val rxtx_reg_val;
struct fsl_ssi_dbg dbg_stats;
const struct fsl_ssi_soc_data *soc;
};
static const struct of_device_id fsl_ssi_ids[] = {
{ .compatible = "fsl,mpc8610-ssi", .data = (void *) FSL_SSI_MCP8610},
{ .compatible = "fsl,imx51-ssi", .data = (void *) FSL_SSI_MX51},
{ .compatible = "fsl,imx35-ssi", .data = (void *) FSL_SSI_MX35},
{ .compatible = "fsl,imx21-ssi", .data = (void *) FSL_SSI_MX21},
{}
};
MODULE_DEVICE_TABLE(of, fsl_ssi_ids);
static bool fsl_ssi_is_ac97(struct fsl_ssi_private *ssi_private)
{
return !!(ssi_private->dai_fmt & SND_SOC_DAIFMT_AC97);
}
static bool fsl_ssi_on_imx(struct fsl_ssi_private *ssi_private)
{
switch (ssi_private->hw_type) {
case FSL_SSI_MX21:
case FSL_SSI_MX35:
case FSL_SSI_MX51:
return true;
case FSL_SSI_MCP8610:
return false;
}
return false;
}
/*
* imx51 and later SoCs have a slightly different IP that allows the
* SSI configuration while the SSI unit is running.
@ -213,18 +192,48 @@ static bool fsl_ssi_on_imx(struct fsl_ssi_private *ssi_private)
* while the SSI unit is running (SSIEN). So we support the necessary
* online configuration of fsl-ssi starting at imx51.
*/
static bool fsl_ssi_offline_config(struct fsl_ssi_private *ssi_private)
{
switch (ssi_private->hw_type) {
case FSL_SSI_MCP8610:
case FSL_SSI_MX21:
case FSL_SSI_MX35:
return true;
case FSL_SSI_MX51:
return false;
}
return true;
static struct fsl_ssi_soc_data fsl_ssi_mpc8610 = {
.imx = false,
.offline_config = true,
.sisr_write_mask = CCSR_SSI_SISR_RFRC | CCSR_SSI_SISR_TFRC |
CCSR_SSI_SISR_ROE0 | CCSR_SSI_SISR_ROE1 |
CCSR_SSI_SISR_TUE0 | CCSR_SSI_SISR_TUE1,
};
static struct fsl_ssi_soc_data fsl_ssi_imx21 = {
.imx = true,
.offline_config = true,
.sisr_write_mask = 0,
};
static struct fsl_ssi_soc_data fsl_ssi_imx35 = {
.imx = true,
.offline_config = true,
.sisr_write_mask = CCSR_SSI_SISR_RFRC | CCSR_SSI_SISR_TFRC |
CCSR_SSI_SISR_ROE0 | CCSR_SSI_SISR_ROE1 |
CCSR_SSI_SISR_TUE0 | CCSR_SSI_SISR_TUE1,
};
static struct fsl_ssi_soc_data fsl_ssi_imx51 = {
.imx = true,
.offline_config = false,
.sisr_write_mask = CCSR_SSI_SISR_ROE0 | CCSR_SSI_SISR_ROE1 |
CCSR_SSI_SISR_TUE0 | CCSR_SSI_SISR_TUE1,
};
static const struct of_device_id fsl_ssi_ids[] = {
{ .compatible = "fsl,mpc8610-ssi", .data = &fsl_ssi_mpc8610 },
{ .compatible = "fsl,imx51-ssi", .data = &fsl_ssi_imx51 },
{ .compatible = "fsl,imx35-ssi", .data = &fsl_ssi_imx35 },
{ .compatible = "fsl,imx21-ssi", .data = &fsl_ssi_imx21 },
{}
};
MODULE_DEVICE_TABLE(of, fsl_ssi_ids);
static bool fsl_ssi_is_ac97(struct fsl_ssi_private *ssi_private)
{
return !!(ssi_private->dai_fmt & SND_SOC_DAIFMT_AC97);
}
/**
@ -245,25 +254,6 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id)
struct ccsr_ssi __iomem *ssi = ssi_private->ssi;
__be32 sisr;
__be32 sisr2;
__be32 sisr_write_mask = 0;
switch (ssi_private->hw_type) {
case FSL_SSI_MX21:
sisr_write_mask = 0;
break;
case FSL_SSI_MCP8610:
case FSL_SSI_MX35:
sisr_write_mask = CCSR_SSI_SISR_RFRC | CCSR_SSI_SISR_TFRC |
CCSR_SSI_SISR_ROE0 | CCSR_SSI_SISR_ROE1 |
CCSR_SSI_SISR_TUE0 | CCSR_SSI_SISR_TUE1;
break;
case FSL_SSI_MX51:
sisr_write_mask = CCSR_SSI_SISR_ROE0 | CCSR_SSI_SISR_ROE1 |
CCSR_SSI_SISR_TUE0 | CCSR_SSI_SISR_TUE1;
break;
}
/* We got an interrupt, so read the status register to see what we
were interrupted for. We mask it with the Interrupt Enable register
@ -271,7 +261,7 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id)
*/
sisr = read_ssi(&ssi->sisr);
sisr2 = sisr & sisr_write_mask;
sisr2 = sisr & ssi_private->soc->sisr_write_mask;
/* Clear the bits that we set */
if (sisr2)
write_ssi(sisr2, &ssi->sisr);
@ -359,7 +349,7 @@ static void fsl_ssi_config(struct fsl_ssi_private *ssi_private, bool enable,
* reconfiguration, so we have to enable all necessary flags at once
* even if we do not use them later (capture and playback configuration)
*/
if (fsl_ssi_offline_config(ssi_private)) {
if (ssi_private->soc->offline_config) {
if ((enable && !nr_active_streams) ||
(!enable && !keep_active))
fsl_ssi_rxtx_config(ssi_private, enable);
@ -915,7 +905,7 @@ static int fsl_ssi_dai_probe(struct snd_soc_dai *dai)
{
struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(dai);
if (fsl_ssi_on_imx(ssi_private) && ssi_private->use_dma) {
if (ssi_private->soc->imx && ssi_private->use_dma) {
dai->playback_dma_data = &ssi_private->dma_params_tx;
dai->capture_dma_data = &ssi_private->dma_params_rx;
}
@ -1141,7 +1131,6 @@ static int fsl_ssi_probe(struct platform_device *pdev)
int ret = 0;
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *of_id;
enum fsl_ssi_type hw_type;
const char *p, *sprop;
const uint32_t *iprop;
struct resource res;
@ -1156,9 +1145,8 @@ static int fsl_ssi_probe(struct platform_device *pdev)
return -ENODEV;
of_id = of_match_device(fsl_ssi_ids, &pdev->dev);
if (!of_id)
if (!of_id || !of_id->data)
return -EINVAL;
hw_type = (enum fsl_ssi_type) of_id->data;
sprop = of_get_property(np, "fsl,mode", NULL);
if (!sprop) {
@ -1175,9 +1163,10 @@ static int fsl_ssi_probe(struct platform_device *pdev)
return -ENOMEM;
}
ssi_private->soc = of_id->data;
ssi_private->use_dma = !of_property_read_bool(np,
"fsl,fiq-stream-filter");
ssi_private->hw_type = hw_type;
if (ac97) {
memcpy(&ssi_private->cpu_dai_drv, &fsl_ssi_ac97_dai,
@ -1232,7 +1221,7 @@ static int fsl_ssi_probe(struct platform_device *pdev)
dev_set_drvdata(&pdev->dev, ssi_private);
if (fsl_ssi_on_imx(ssi_private)) {
if (ssi_private->soc->imx) {
ret = fsl_ssi_imx_probe(pdev, ssi_private, ssi_private->ssi);
if (ret)
goto error_irqmap;
@ -1299,7 +1288,7 @@ error_irq:
snd_soc_unregister_component(&pdev->dev);
error_asoc_register:
if (fsl_ssi_on_imx(ssi_private))
if (ssi_private->soc->imx)
fsl_ssi_imx_clean(pdev, ssi_private);
error_irqmap:
@ -1319,7 +1308,7 @@ static int fsl_ssi_remove(struct platform_device *pdev)
platform_device_unregister(ssi_private->pdev);
snd_soc_unregister_component(&pdev->dev);
if (fsl_ssi_on_imx(ssi_private))
if (ssi_private->soc->imx)
fsl_ssi_imx_clean(pdev, ssi_private);
if (ssi_private->use_dma)