p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ASoC: jz4740: Add jz4780 support 

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>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Zubair Lutfullah Kakakhel 2015-03-09 12:11:08 +00:00 committed by Mark Brown
parent c517d838eb
commit 967beb2e87
2 changed files with 75 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
View File

@ -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"

84
sound/soc/jz4740/jz4740-i2s.c
View File

@ -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);
@ -422,13 +455,34 @@ static struct snd_soc_dai_driver jz4740_i2s_dai = {
.resume = jz4740_i2s_resume,
};
static struct snd_soc_dai_driver jz4780_i2s_dai = {
.probe = jz4740_i2s_dai_probe,
.remove = jz4740_i2s_dai_remove,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = JZ4740_I2S_FMTS,
},
.capture = {
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = JZ4740_I2S_FMTS,
},
.ops = &jz4740_i2s_dai_ops,
.suspend = jz4740_i2s_suspend,
.resume = jz4740_i2s_resume,
};
static const struct snd_soc_component_driver jz4740_i2s_component = {
.name = "jz4740-i2s",
};
#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 +492,16 @@ 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))
@ -460,8 +519,13 @@ static int jz4740_i2s_dev_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, i2s);
ret = devm_snd_soc_register_component(&pdev->dev,
&jz4740_i2s_component, &jz4740_i2s_dai, 1);
if (i2s->version == JZ_I2S_JZ4780)
ret = devm_snd_soc_register_component(&pdev->dev,
&jz4740_i2s_component, &jz4780_i2s_dai, 1);
else
ret = devm_snd_soc_register_component(&pdev->dev,
&jz4740_i2s_component, &jz4740_i2s_dai, 1);
if (ret)
return ret;