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>

diff --git a/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
index b414333..b623d50 100644 (file)
--- 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..b05fb1c 100644 (file)
--- 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);
@@ -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;