[求救] 新手上路 i2s [已解決]

leung先森

rk3128外接codec用的是i2s-2channel
首先要确认好需要配置的i2s信号，看是否存在复用之类的
第二，要开启I2S_MCLK,clk_i2s_2ch_out
对应：

1. + i2s->clk_i2s_2ch_out = clk_get(&pdev->dev, "clk_i2s_2ch_out");
   
2. + if (IS_ERR(i2s->clk_i2s_2ch_out)) {
   
3. + dev_err(&pdev->dev, "Can't retrieve clk_i2s_2ch_out\n");
   
4. + ret = PTR_ERR(i2s->clk_i2s_2ch_out);
   
5. + goto err;
   
6. +}
   
7. + clk_prepare_enable(i2s->clk_i2s_2ch_out);

复制代码

后面再确认clk输出

leung先森

woody.lee 发表于 2016-3-1 11:39
Hi leung,

    首先, 十分百分千分萬分萬萬分, 感謝您的回應.

1. diff --git a/arch/arm/boot/dts/rk312x.dtsi b/arch/arm/boot/dts/rk312x.dtsi
   
2. index fb0a437..2f62fc9 100755
   
3. --- a/arch/arm/boot/dts/rk312x.dtsi
   
4. +++ b/arch/arm/boot/dts/rk312x.dtsi
   
5. dmas = <&pdma 0>, <&pdma 1>;
   
6. //#dma-cells = <2>;
   
7. dma-names = "tx", "rx";
   
8. - //pinctrl-names = "default", "sleep";
   
9. + pinctrl-names = "default", "sleep";
   
10. //pinctrl-0 = <&i2s0_mclk &i2s0_sclk &i2s0_lrckrx &i2s0_lrcktx &i2s0_sdi
    
11. &i2s0_sdo>;
    
12. //pinctrl-1 = <&i2s0_gpio>;
    
13. - status = "disabled";
    
14. + pinctrl-0 = <&i2s0_mclk_mux0 &i2s0_sclk_mux0 &i2s0_lrckrx_mux0
    
15. &i2s0_lrcktx_mux0 &i2s0_sdi_mux0 &i2s0_sdo_mux0>;
    
16. + pinctrl-1 = <&i2s0_gpio_mux0>;
    
17. + status = "okay";
    
18. };
    
19. i2s1: i2s@10200000 {
    
20. @@ -496,6 +498,7 @@
    
21. dmas = <&pdma 14>, <&pdma 15>;
    
22. //#dma-cells = <2>;
    
23. dma-names = "tx", "rx";
    
24. + status = "disabled";
    
25. };
    
26. spdif: spdif@10204000 {
    
27. diff --git a/sound/soc/rockchip/rk30_i2s.c b/sound/soc/rockchip/rk30_i2s.c
    
28. old mode 100644
    
29. new mode 100755
    
30. index df121bb..d6d39c4
    
31. --- a/sound/soc/rockchip/rk30_i2s.c
    
32. +++ b/sound/soc/rockchip/rk30_i2s.c
    
33. @@ -60,6 +60,7 @@ struct rk30_i2s_info {
    
34. struct clk *i2s_clk;// i2s clk ,is bclk lrck
    
35. struct clk *i2s_mclk;//i2s mclk,rk32xx can different i2s clk.
    
36. struct clk *i2s_hclk;
    
37. +struct clk *clk_i2s_2ch_out;
    
38. struct snd_dmaengine_dai_dma_data capture_dma_data;
    
39. struct snd_dmaengine_dai_dma_data playback_dma_data;
    
40. @ -582,6 +583,13 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
    
41. #endif
    
42. clk_prepare_enable(i2s->i2s_mclk);
    
43. }
    
44. +
    
45. +
    
46. +i2s->clk_i2s_2ch_out = clk_get(&pdev->dev, "clk_i2s_2ch_out");
    
47. +if (IS_ERR(i2s->clk_i2s_2ch_out)) {
    
48. + dev_err(&pdev->dev, "Can't retrieve clk_i2s_2ch_out\n");
    
49. + ret = PTR_ERR(i2s->clk_i2s_2ch_out);
    
50. + goto err;
    
51. +}
    
52. +clk_prepare_enable(i2s->clk_i2s_2ch_out);
    
53. mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
    
54. if (!mem) {
    
55. diff --git a/sound/soc/rockchip/rk30_i2s.c b/sound/soc/rockchip/rk30_i2s.c
    
56. index 3c8b5d2..6bed949 100755
    
57. --- a/sound/soc/rockchip/rk30_i2s.c
    
58. +++ b/sound/soc/rockchip/rk30_i2s.c
    
59. @ -563,6 +563,10 @ static int rockchip_i2s_probe(struct platform_device *pdev)
    
60. }
    
61. }
    
62. + /*GRF_SOC_CON1 sdi select GPIO0B6*/
    
63. + val = readl_relaxed(RK_GRF_VIRT + 0x0144);
    
64. + val = val | 0x00200020;
    
65. + writel_relaxed(val, RK_GRF_VIRT + 0x0144);
    
66. if(pdev->id >= MAX_I2S) {
    
67. dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
    
68. ret = -ENOMEM;
    

复制代码

稍微参考一下，排版不是很好

leung先森

woody.lee 发表于 2016-3-2 09:27
Hi leung,

感恩, 看到 clock 的波形了

[    1.383129] audio-ssm2603 audio-ssm2603.15: ASoC: CODEC DAI ssm2603-hifi not registered
-----------------------------------
从这个地方开始排查，首先要确认好machine driver和codec driver那些card info是否对应一致，
大小写是否一致。还是不行，就要一个个环节去排查

leung先森

woody.lee 发表于 2016-3-2 16:58
Hi leung,

  謝謝您, 目前看起來有一些新東西,

芯片datasheet，查一下playback和capture寄存器是否有配置正确。
如果还是不行，那么我也没办法了。
Good Luck !