The jz4780 and jz4740 have very similar i2s blocks.

The slight difference is in Rx/Tx fifos. And the bitclocks for input/output are different.

This patch adds jz4780 support to the driver

Signed-off-by: Zubair Lutfullah Kakakhel Zubair.Kakakhel@imgtec.com

--- Patch based on 4.0-rc2 Tested on the MIPS Creator CI20. --- .../bindings/sound/ingenic,jz4740-i2s.txt | 2 +- sound/soc/jz4740/jz4740-i2s.c | 63 ++++++++++++++++++---- 2 files changed, 54 insertions(+), 11 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt index b414333..b623d50 100644 --- a/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt +++ b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt @@ -1,7 +1,7 @@ Ingenic JZ4740 I2S controller

Required properties: -- compatible : "ingenic,jz4740-i2s" +- compatible : "ingenic,jz4740-i2s" or "ingenic,jz4780-i2s" - reg : I2S registers location and length - clocks : AIC and I2S PLL clock specifiers. - clock-names: "aic" and "i2s" diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c index 07f7781..630ea96 100644 --- a/sound/soc/jz4740/jz4740-i2s.c +++ b/sound/soc/jz4740/jz4740-i2s.c @@ -58,6 +58,12 @@

#define JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 12 #define JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 8 +#define JZ4780_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 24 +#define JZ4780_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 16 +#define JZ4780_AIC_CONF_FIFO_RX_THRESHOLD_MASK \ + (0xf << JZ4780_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) +#define JZ4780_AIC_CONF_FIFO_TX_THRESHOLD_MASK \ + (0x1f << JZ4780_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET)

#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK (0x7 << 19) #define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK (0x7 << 16) @@ -79,6 +85,7 @@ #define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET 16

#define JZ_AIC_I2S_FMT_DISABLE_BIT_CLK BIT(12) +#define JZ_AIC_I2S_FMT_DISABLE_BIT_ICLK BIT(13) #define JZ_AIC_I2S_FMT_ENABLE_SYS_CLK BIT(4) #define JZ_AIC_I2S_FMT_MSB BIT(0)

@@ -87,6 +94,13 @@ #define JZ_AIC_CLK_DIV_MASK 0xf #define I2SDIV_DV_SHIFT 8 #define I2SDIV_DV_MASK (0xf << I2SDIV_DV_SHIFT) +#define I2SDIV_IDV_SHIFT 8 +#define I2SDIV_IDV_MASK (0xf << I2SDIV_IDV_SHIFT) + +enum jz47xx_i2s_version { + JZ_I2S_JZ4740, + JZ_I2S_JZ4780, +};

struct jz4740_i2s { struct resource *mem; @@ -98,6 +112,8 @@ struct jz4740_i2s {

struct snd_dmaengine_dai_dma_data playback_dma_data; struct snd_dmaengine_dai_dma_data capture_dma_data; + + enum jz47xx_i2s_version version; };

static inline uint32_t jz4740_i2s_read(const struct jz4740_i2s *i2s, @@ -267,13 +283,22 @@ static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream, ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO; else ctrl &= ~JZ_AIC_CTRL_MONO_TO_STEREO; + + div_reg &= ~I2SDIV_DV_MASK; + div_reg |= (div - 1) << I2SDIV_DV_SHIFT; } else { ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK; ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET; + + if (i2s->version >= JZ_I2S_JZ4780) { + div_reg &= ~I2SDIV_IDV_MASK; + div_reg |= (div - 1) << I2SDIV_IDV_SHIFT; + } else { + div_reg &= ~I2SDIV_DV_MASK; + div_reg |= (div - 1) << I2SDIV_DV_SHIFT; + } }

- div_reg &= ~I2SDIV_DV_MASK; - div_reg |= (div - 1) << I2SDIV_DV_SHIFT; jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl); jz4740_i2s_write(i2s, JZ_REG_AIC_CLK_DIV, div_reg);

@@ -369,11 +394,19 @@ static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai) snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data, &i2s->capture_dma_data);

- conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) | - (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) | - JZ_AIC_CONF_OVERFLOW_PLAY_LAST | - JZ_AIC_CONF_I2S | - JZ_AIC_CONF_INTERNAL_CODEC; + if (i2s->version >= JZ_I2S_JZ4780) { + conf = (7 << JZ4780_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) | + (8 << JZ4780_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) | + JZ_AIC_CONF_OVERFLOW_PLAY_LAST | + JZ_AIC_CONF_I2S | + JZ_AIC_CONF_INTERNAL_CODEC; + } else { + conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) | + (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) | + JZ_AIC_CONF_OVERFLOW_PLAY_LAST | + JZ_AIC_CONF_I2S | + JZ_AIC_CONF_INTERNAL_CODEC; + }

jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET); jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf); @@ -428,7 +461,8 @@ static const struct snd_soc_component_driver jz4740_i2s_component = {

#ifdef CONFIG_OF static const struct of_device_id jz4740_of_matches[] = { - { .compatible = "ingenic,jz4740-i2s" }, + { .compatible = "ingenic,jz4740-i2s", .data = (void *)JZ_I2S_JZ4740 }, + { .compatible = "ingenic,jz4780-i2s", .data = (void *)JZ_I2S_JZ4780 }, { /* sentinel */ } }; #endif @@ -438,11 +472,16 @@ static int jz4740_i2s_dev_probe(struct platform_device *pdev) struct jz4740_i2s *i2s; struct resource *mem; int ret; + const struct of_device_id *match;

i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL); if (!i2s) return -ENOMEM;

+ match = of_match_device(jz4740_of_matches, &pdev->dev); + if (match) + i2s->version = (enum jz47xx_i2s_version)match->data; + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); i2s->base = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(i2s->base)) @@ -465,8 +504,12 @@ static int jz4740_i2s_dev_probe(struct platform_device *pdev) if (ret) return ret;

- return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, - SND_DMAENGINE_PCM_FLAG_COMPAT); + if (i2s->version >= JZ_I2S_JZ4780) + return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, + SND_DMAENGINE_PCM_FLAG_NO_RESIDUE); + else + return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, + SND_DMAENGINE_PCM_FLAG_COMPAT); }

static struct platform_driver jz4740_i2s_driver = {