From: Sascha Hauer s.hauer@pengutronix.de
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 --- sound/soc/fsl/fsl_ssi.c | 125 ++++++++++++++++++++++-------------------------- 1 file changed, 57 insertions(+), 68 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 794f25f..f2255cb 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -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; @@ -168,35 +173,9 @@ struct fsl_ssi_private { struct fsl_ssi_rxtx_reg_val rxtx_reg_val;
struct fsl_ssi_dbg dbg_stats; -};
-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}, - {} + const struct fsl_ssi_soc_data *soc; }; -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 @@ -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); @@ -910,7 +900,7 @@ 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; } @@ -1136,7 +1126,6 @@ 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; @@ -1151,9 +1140,8 @@ 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) { @@ -1170,9 +1158,10 @@ 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, @@ -1227,7 +1216,7 @@ 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; @@ -1294,7 +1283,7 @@ 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: @@ -1314,7 +1303,7 @@ 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)