1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // |
3 | // eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode |
4 | // |
5 | // Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com> |
6 | // |
7 | // based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c |
8 | // which is Copyright 2009 Simtec Electronics |
9 | // and on sound/soc/imx/phycore-ac97.c which is |
10 | // Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> |
11 | |
12 | #include <linux/errno.h> |
13 | #include <linux/module.h> |
14 | #include <linux/moduleparam.h> |
15 | #include <linux/of.h> |
16 | #include <linux/of_platform.h> |
17 | #include <linux/device.h> |
18 | #include <linux/i2c.h> |
19 | #include <sound/core.h> |
20 | #include <sound/pcm.h> |
21 | #include <sound/soc.h> |
22 | #include <asm/mach-types.h> |
23 | |
24 | #include "../codecs/tlv320aic23.h" |
25 | #include "imx-ssi.h" |
26 | #include "imx-audmux.h" |
27 | |
28 | #define CODEC_CLOCK 12000000 |
29 | |
30 | static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, |
31 | struct snd_pcm_hw_params *params) |
32 | { |
33 | struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
34 | struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); |
35 | struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); |
36 | int ret; |
37 | |
38 | ret = snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: 0, |
39 | CODEC_CLOCK, SND_SOC_CLOCK_OUT); |
40 | if (ret) { |
41 | dev_err(cpu_dai->dev, |
42 | "Failed to set the codec sysclk.\n" ); |
43 | return ret; |
44 | } |
45 | |
46 | snd_soc_dai_set_tdm_slot(dai: cpu_dai, tx_mask: 0x3, rx_mask: 0x3, slots: 2, slot_width: 0); |
47 | |
48 | ret = snd_soc_dai_set_sysclk(dai: cpu_dai, IMX_SSP_SYS_CLK, freq: 0, |
49 | SND_SOC_CLOCK_IN); |
50 | /* fsl_ssi lacks the set_sysclk ops */ |
51 | if (ret && ret != -EINVAL) { |
52 | dev_err(cpu_dai->dev, |
53 | "Can't set the IMX_SSP_SYS_CLK CPU system clock.\n" ); |
54 | return ret; |
55 | } |
56 | |
57 | return 0; |
58 | } |
59 | |
60 | static const struct snd_soc_ops eukrea_tlv320_snd_ops = { |
61 | .hw_params = eukrea_tlv320_hw_params, |
62 | }; |
63 | |
64 | SND_SOC_DAILINK_DEFS(hifi, |
65 | DAILINK_COMP_ARRAY(COMP_EMPTY()), |
66 | DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi" )), |
67 | DAILINK_COMP_ARRAY(COMP_EMPTY())); |
68 | |
69 | static struct snd_soc_dai_link eukrea_tlv320_dai = { |
70 | .name = "tlv320aic23" , |
71 | .stream_name = "TLV320AIC23" , |
72 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
73 | SND_SOC_DAIFMT_CBP_CFP, |
74 | .ops = &eukrea_tlv320_snd_ops, |
75 | SND_SOC_DAILINK_REG(hifi), |
76 | }; |
77 | |
78 | static struct snd_soc_card eukrea_tlv320 = { |
79 | .owner = THIS_MODULE, |
80 | .dai_link = &eukrea_tlv320_dai, |
81 | .num_links = 1, |
82 | }; |
83 | |
84 | static int eukrea_tlv320_probe(struct platform_device *pdev) |
85 | { |
86 | int ret; |
87 | int int_port = 0, ext_port; |
88 | struct device_node *np = pdev->dev.of_node; |
89 | struct device_node *ssi_np = NULL, *codec_np = NULL, *tmp_np = NULL; |
90 | |
91 | eukrea_tlv320.dev = &pdev->dev; |
92 | if (np) { |
93 | ret = snd_soc_of_parse_card_name(card: &eukrea_tlv320, |
94 | propname: "eukrea,model" ); |
95 | if (ret) { |
96 | dev_err(&pdev->dev, |
97 | "eukrea,model node missing or invalid.\n" ); |
98 | goto err; |
99 | } |
100 | |
101 | ssi_np = of_parse_phandle(np: pdev->dev.of_node, |
102 | phandle_name: "ssi-controller" , index: 0); |
103 | if (!ssi_np) { |
104 | dev_err(&pdev->dev, |
105 | "ssi-controller missing or invalid.\n" ); |
106 | ret = -ENODEV; |
107 | goto err; |
108 | } |
109 | |
110 | codec_np = of_parse_phandle(np: ssi_np, phandle_name: "codec-handle" , index: 0); |
111 | if (codec_np) |
112 | eukrea_tlv320_dai.codecs->of_node = codec_np; |
113 | else |
114 | dev_err(&pdev->dev, "codec-handle node missing or invalid.\n" ); |
115 | |
116 | ret = of_property_read_u32(np, propname: "fsl,mux-int-port" , out_value: &int_port); |
117 | if (ret) { |
118 | dev_err(&pdev->dev, |
119 | "fsl,mux-int-port node missing or invalid.\n" ); |
120 | goto err; |
121 | } |
122 | ret = of_property_read_u32(np, propname: "fsl,mux-ext-port" , out_value: &ext_port); |
123 | if (ret) { |
124 | dev_err(&pdev->dev, |
125 | "fsl,mux-ext-port node missing or invalid.\n" ); |
126 | goto err; |
127 | } |
128 | |
129 | /* |
130 | * The port numbering in the hardware manual starts at 1, while |
131 | * the audmux API expects it starts at 0. |
132 | */ |
133 | int_port--; |
134 | ext_port--; |
135 | |
136 | eukrea_tlv320_dai.cpus->of_node = ssi_np; |
137 | eukrea_tlv320_dai.platforms->of_node = ssi_np; |
138 | } else { |
139 | eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0" ; |
140 | eukrea_tlv320_dai.platforms->name = "imx-ssi.0" ; |
141 | eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a" ; |
142 | eukrea_tlv320.name = "cpuimx-audio" ; |
143 | } |
144 | |
145 | if (machine_is_eukrea_cpuimx27() || |
146 | (tmp_np = of_find_compatible_node(NULL, NULL, compat: "fsl,imx21-audmux" ))) { |
147 | imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0, |
148 | IMX_AUDMUX_V1_PCR_SYN | |
149 | IMX_AUDMUX_V1_PCR_TFSDIR | |
150 | IMX_AUDMUX_V1_PCR_TCLKDIR | |
151 | IMX_AUDMUX_V1_PCR_RFSDIR | |
152 | IMX_AUDMUX_V1_PCR_RCLKDIR | |
153 | IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | |
154 | IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) | |
155 | IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
156 | ); |
157 | imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4, |
158 | IMX_AUDMUX_V1_PCR_SYN | |
159 | IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0) |
160 | ); |
161 | of_node_put(node: tmp_np); |
162 | } else if (machine_is_eukrea_cpuimx25sd() || |
163 | machine_is_eukrea_cpuimx35sd() || |
164 | machine_is_eukrea_cpuimx51sd() || |
165 | (tmp_np = of_find_compatible_node(NULL, NULL, compat: "fsl,imx31-audmux" ))) { |
166 | if (!np) |
167 | ext_port = machine_is_eukrea_cpuimx25sd() ? |
168 | 4 : 3; |
169 | |
170 | imx_audmux_v2_configure_port(port: int_port, |
171 | IMX_AUDMUX_V2_PTCR_SYN | |
172 | IMX_AUDMUX_V2_PTCR_TFSDIR | |
173 | IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) | |
174 | IMX_AUDMUX_V2_PTCR_TCLKDIR | |
175 | IMX_AUDMUX_V2_PTCR_TCSEL(ext_port), |
176 | IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port) |
177 | ); |
178 | imx_audmux_v2_configure_port(port: ext_port, |
179 | IMX_AUDMUX_V2_PTCR_SYN, |
180 | IMX_AUDMUX_V2_PDCR_RXDSEL(int_port) |
181 | ); |
182 | of_node_put(node: tmp_np); |
183 | } else { |
184 | if (np) { |
185 | /* The eukrea,asoc-tlv320 driver was explicitly |
186 | * requested (through the device tree). |
187 | */ |
188 | dev_err(&pdev->dev, |
189 | "Missing or invalid audmux DT node.\n" ); |
190 | return -ENODEV; |
191 | } else { |
192 | /* Return happy. |
193 | * We might run on a totally different machine. |
194 | */ |
195 | return 0; |
196 | } |
197 | } |
198 | |
199 | ret = devm_snd_soc_register_card(dev: &pdev->dev, card: &eukrea_tlv320); |
200 | err: |
201 | if (ret) |
202 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n" , ret); |
203 | of_node_put(node: ssi_np); |
204 | |
205 | return ret; |
206 | } |
207 | |
208 | static const struct of_device_id imx_tlv320_dt_ids[] = { |
209 | { .compatible = "eukrea,asoc-tlv320" }, |
210 | { /* sentinel */ } |
211 | }; |
212 | MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids); |
213 | |
214 | static struct platform_driver eukrea_tlv320_driver = { |
215 | .driver = { |
216 | .name = "eukrea_tlv320" , |
217 | .of_match_table = imx_tlv320_dt_ids, |
218 | }, |
219 | .probe = eukrea_tlv320_probe, |
220 | }; |
221 | |
222 | module_platform_driver(eukrea_tlv320_driver); |
223 | |
224 | MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>" ); |
225 | MODULE_DESCRIPTION("CPUIMX ALSA SoC driver" ); |
226 | MODULE_LICENSE("GPL" ); |
227 | MODULE_ALIAS("platform:eukrea_tlv320" ); |
228 | |