1 // SPDX-License-Identifier: GPL-2.0
3 // Copyright (c) 2020 BayLibre, SAS.
4 // Author: Jerome Brunet <jbrunet@baylibre.com>
6 #include <linux/bitfield.h>
8 #include <linux/module.h>
9 #include <linux/of_platform.h>
10 #include <linux/regmap.h>
11 #include <linux/reset.h>
12 #include <sound/soc.h>
13 #include <sound/soc-dai.h>
15 #include <dt-bindings/sound/meson-aiu.h>
19 #define AIU_I2S_MISC_958_SRC_SHIFT 3
21 static const char * const aiu_spdif_encode_sel_texts[] = {
25 static SOC_ENUM_SINGLE_DECL(aiu_spdif_encode_sel_enum, AIU_I2S_MISC,
26 AIU_I2S_MISC_958_SRC_SHIFT,
27 aiu_spdif_encode_sel_texts);
29 static const struct snd_kcontrol_new aiu_spdif_encode_mux =
30 SOC_DAPM_ENUM("SPDIF Buffer Src", aiu_spdif_encode_sel_enum);
32 static const struct snd_soc_dapm_widget aiu_cpu_dapm_widgets[] = {
33 SND_SOC_DAPM_MUX("SPDIF SRC SEL", SND_SOC_NOPM, 0, 0,
34 &aiu_spdif_encode_mux),
37 static const struct snd_soc_dapm_route aiu_cpu_dapm_routes[] = {
38 { "I2S Encoder Playback", NULL, "I2S FIFO Playback" },
39 { "SPDIF SRC SEL", "SPDIF", "SPDIF FIFO Playback" },
40 { "SPDIF SRC SEL", "I2S", "I2S FIFO Playback" },
41 { "SPDIF Encoder Playback", NULL, "SPDIF SRC SEL" },
44 int aiu_of_xlate_dai_name(struct snd_soc_component *component,
45 struct of_phandle_args *args,
46 const char **dai_name,
47 unsigned int component_id)
49 struct snd_soc_dai *dai;
52 if (args->args_count != 2)
55 if (args->args[0] != component_id)
60 if (id < 0 || id >= component->num_dai)
63 for_each_component_dais(component, dai) {
69 *dai_name = dai->driver->name;
74 static int aiu_cpu_of_xlate_dai_name(struct snd_soc_component *component,
75 struct of_phandle_args *args,
76 const char **dai_name)
78 return aiu_of_xlate_dai_name(component, args, dai_name, AIU_CPU);
81 static int aiu_cpu_component_probe(struct snd_soc_component *component)
83 struct aiu *aiu = snd_soc_component_get_drvdata(component);
85 /* Required for the SPDIF Source control operation */
86 return clk_prepare_enable(aiu->i2s.clks[PCLK].clk);
89 static void aiu_cpu_component_remove(struct snd_soc_component *component)
91 struct aiu *aiu = snd_soc_component_get_drvdata(component);
93 clk_disable_unprepare(aiu->i2s.clks[PCLK].clk);
96 static const struct snd_soc_component_driver aiu_cpu_component = {
98 .dapm_widgets = aiu_cpu_dapm_widgets,
99 .num_dapm_widgets = ARRAY_SIZE(aiu_cpu_dapm_widgets),
100 .dapm_routes = aiu_cpu_dapm_routes,
101 .num_dapm_routes = ARRAY_SIZE(aiu_cpu_dapm_routes),
102 .of_xlate_dai_name = aiu_cpu_of_xlate_dai_name,
103 .pointer = aiu_fifo_pointer,
104 .probe = aiu_cpu_component_probe,
105 .remove = aiu_cpu_component_remove,
108 static struct snd_soc_dai_driver aiu_cpu_dai_drv[] = {
112 .stream_name = "I2S FIFO Playback",
115 .rates = SNDRV_PCM_RATE_CONTINUOUS,
118 .formats = AIU_FORMATS,
120 .ops = &aiu_fifo_i2s_dai_ops,
121 .pcm_new = aiu_fifo_pcm_new,
122 .probe = aiu_fifo_i2s_dai_probe,
123 .remove = aiu_fifo_dai_remove,
126 .name = "SPDIF FIFO",
128 .stream_name = "SPDIF FIFO Playback",
131 .rates = SNDRV_PCM_RATE_CONTINUOUS,
134 .formats = AIU_FORMATS,
136 .ops = &aiu_fifo_spdif_dai_ops,
137 .pcm_new = aiu_fifo_pcm_new,
138 .probe = aiu_fifo_spdif_dai_probe,
139 .remove = aiu_fifo_dai_remove,
141 [CPU_I2S_ENCODER] = {
142 .name = "I2S Encoder",
144 .stream_name = "I2S Encoder Playback",
147 .rates = SNDRV_PCM_RATE_8000_192000,
148 .formats = AIU_FORMATS,
150 .ops = &aiu_encoder_i2s_dai_ops,
152 [CPU_SPDIF_ENCODER] = {
153 .name = "SPDIF Encoder",
155 .stream_name = "SPDIF Encoder Playback",
158 .rates = (SNDRV_PCM_RATE_32000 |
159 SNDRV_PCM_RATE_44100 |
160 SNDRV_PCM_RATE_48000 |
161 SNDRV_PCM_RATE_88200 |
162 SNDRV_PCM_RATE_96000 |
163 SNDRV_PCM_RATE_176400 |
164 SNDRV_PCM_RATE_192000),
165 .formats = AIU_FORMATS,
167 .ops = &aiu_encoder_spdif_dai_ops,
171 static const struct regmap_config aiu_regmap_cfg = {
175 .max_register = 0x2ac,
178 static int aiu_clk_bulk_get(struct device *dev,
179 const char * const *ids,
181 struct aiu_interface *interface)
183 struct clk_bulk_data *clks;
186 clks = devm_kcalloc(dev, num, sizeof(*clks), GFP_KERNEL);
190 for (i = 0; i < num; i++)
193 ret = devm_clk_bulk_get(dev, num, clks);
197 interface->clks = clks;
198 interface->clk_num = num;
202 static const char * const aiu_i2s_ids[] = {
204 [AOCLK] = "i2s_aoclk",
206 [MIXER] = "i2s_mixer",
209 static const char * const aiu_spdif_ids[] = {
210 [PCLK] = "spdif_pclk",
211 [AOCLK] = "spdif_aoclk",
212 [MCLK] = "spdif_mclk_sel"
215 static int aiu_clk_get(struct device *dev)
217 struct aiu *aiu = dev_get_drvdata(dev);
220 aiu->pclk = devm_clk_get(dev, "pclk");
221 if (IS_ERR(aiu->pclk)) {
222 if (PTR_ERR(aiu->pclk) != -EPROBE_DEFER)
223 dev_err(dev, "Can't get the aiu pclk\n");
224 return PTR_ERR(aiu->pclk);
227 aiu->spdif_mclk = devm_clk_get(dev, "spdif_mclk");
228 if (IS_ERR(aiu->spdif_mclk)) {
229 if (PTR_ERR(aiu->spdif_mclk) != -EPROBE_DEFER)
230 dev_err(dev, "Can't get the aiu spdif master clock\n");
231 return PTR_ERR(aiu->spdif_mclk);
234 ret = aiu_clk_bulk_get(dev, aiu_i2s_ids, ARRAY_SIZE(aiu_i2s_ids),
237 if (ret != -EPROBE_DEFER)
238 dev_err(dev, "Can't get the i2s clocks\n");
242 ret = aiu_clk_bulk_get(dev, aiu_spdif_ids, ARRAY_SIZE(aiu_spdif_ids),
245 if (ret != -EPROBE_DEFER)
246 dev_err(dev, "Can't get the spdif clocks\n");
250 ret = clk_prepare_enable(aiu->pclk);
252 dev_err(dev, "peripheral clock enable failed\n");
256 ret = devm_add_action_or_reset(dev,
257 (void(*)(void *))clk_disable_unprepare,
260 dev_err(dev, "failed to add reset action on pclk");
265 static int aiu_probe(struct platform_device *pdev)
267 struct device *dev = &pdev->dev;
273 aiu = devm_kzalloc(dev, sizeof(*aiu), GFP_KERNEL);
277 aiu->platform = device_get_match_data(dev);
281 platform_set_drvdata(pdev, aiu);
283 ret = device_reset(dev);
285 if (ret != -EPROBE_DEFER)
286 dev_err(dev, "Failed to reset device\n");
290 regs = devm_platform_ioremap_resource(pdev, 0);
292 return PTR_ERR(regs);
294 map = devm_regmap_init_mmio(dev, regs, &aiu_regmap_cfg);
296 dev_err(dev, "failed to init regmap: %ld\n",
301 aiu->i2s.irq = platform_get_irq_byname(pdev, "i2s");
302 if (aiu->i2s.irq < 0)
305 aiu->spdif.irq = platform_get_irq_byname(pdev, "spdif");
306 if (aiu->spdif.irq < 0)
307 return aiu->spdif.irq;
309 ret = aiu_clk_get(dev);
313 /* Register the cpu component of the aiu */
314 ret = snd_soc_register_component(dev, &aiu_cpu_component,
316 ARRAY_SIZE(aiu_cpu_dai_drv));
318 dev_err(dev, "Failed to register cpu component\n");
322 /* Register the hdmi codec control component */
323 ret = aiu_hdmi_ctrl_register_component(dev);
325 dev_err(dev, "Failed to register hdmi control component\n");
329 /* Register the internal dac control component on gxl */
330 if (aiu->platform->has_acodec) {
331 ret = aiu_acodec_ctrl_register_component(dev);
334 "Failed to register acodec control component\n");
341 snd_soc_unregister_component(dev);
345 static int aiu_remove(struct platform_device *pdev)
347 snd_soc_unregister_component(&pdev->dev);
352 static const struct aiu_platform_data aiu_gxbb_pdata = {
354 .has_clk_ctrl_more_i2s_div = true,
357 static const struct aiu_platform_data aiu_gxl_pdata = {
359 .has_clk_ctrl_more_i2s_div = true,
362 static const struct aiu_platform_data aiu_meson8_pdata = {
364 .has_clk_ctrl_more_i2s_div = false,
367 static const struct of_device_id aiu_of_match[] = {
368 { .compatible = "amlogic,aiu-gxbb", .data = &aiu_gxbb_pdata },
369 { .compatible = "amlogic,aiu-gxl", .data = &aiu_gxl_pdata },
370 { .compatible = "amlogic,aiu-meson8", .data = &aiu_meson8_pdata },
371 { .compatible = "amlogic,aiu-meson8b", .data = &aiu_meson8_pdata },
374 MODULE_DEVICE_TABLE(of, aiu_of_match);
376 static struct platform_driver aiu_pdrv = {
378 .remove = aiu_remove,
381 .of_match_table = aiu_of_match,
384 module_platform_driver(aiu_pdrv);
386 MODULE_DESCRIPTION("Meson AIU Driver");
387 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
388 MODULE_LICENSE("GPL v2");