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.kakak...@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 = {
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
