| // SPDX-License-Identifier: GPL-2.0+ |
| // |
| // Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd. |
| // |
| // Authors: Inha Song <ideal.song@samsung.com> |
| // Sylwester Nawrocki <s.nawrocki@samsung.com> |
| |
| #include <linux/clk.h> |
| #include <linux/gpio.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| |
| #include "i2s.h" |
| #include "../codecs/wm5110.h" |
| |
| /* |
| * The source clock is XCLKOUT with its mux set to the external fixed rate |
| * oscillator (XXTI). |
| */ |
| #define MCLK_RATE 24000000U |
| |
| #define TM2_DAI_AIF1 0 |
| #define TM2_DAI_AIF2 1 |
| |
| struct tm2_machine_priv { |
| struct snd_soc_component *component; |
| unsigned int sysclk_rate; |
| struct gpio_desc *gpio_mic_bias; |
| }; |
| |
| static int tm2_start_sysclk(struct snd_soc_card *card) |
| { |
| struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); |
| struct snd_soc_component *component = priv->component; |
| int ret; |
| |
| ret = snd_soc_component_set_pll(component, WM5110_FLL1_REFCLK, |
| ARIZONA_FLL_SRC_MCLK1, |
| MCLK_RATE, |
| priv->sysclk_rate); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to set FLL1 source: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_component_set_pll(component, WM5110_FLL1, |
| ARIZONA_FLL_SRC_MCLK1, |
| MCLK_RATE, |
| priv->sysclk_rate); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to start FLL1: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK, |
| ARIZONA_CLK_SRC_FLL1, |
| priv->sysclk_rate, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to set SYSCLK source: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int tm2_stop_sysclk(struct snd_soc_card *card) |
| { |
| struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); |
| struct snd_soc_component *component = priv->component; |
| int ret; |
| |
| ret = snd_soc_component_set_pll(component, WM5110_FLL1, 0, 0, 0); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to stop FLL1: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK, |
| ARIZONA_CLK_SRC_FLL1, 0, 0); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to stop SYSCLK: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int tm2_aif1_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
| struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card); |
| |
| switch (params_rate(params)) { |
| case 4000: |
| case 8000: |
| case 12000: |
| case 16000: |
| case 24000: |
| case 32000: |
| case 48000: |
| case 96000: |
| case 192000: |
| /* Highest possible SYSCLK frequency: 147.456MHz */ |
| priv->sysclk_rate = 147456000U; |
| break; |
| case 11025: |
| case 22050: |
| case 44100: |
| case 88200: |
| case 176400: |
| /* Highest possible SYSCLK frequency: 135.4752 MHz */ |
| priv->sysclk_rate = 135475200U; |
| break; |
| default: |
| dev_err(component->dev, "Not supported sample rate: %d\n", |
| params_rate(params)); |
| return -EINVAL; |
| } |
| |
| return tm2_start_sysclk(rtd->card); |
| } |
| |
| static struct snd_soc_ops tm2_aif1_ops = { |
| .hw_params = tm2_aif1_hw_params, |
| }; |
| |
| static int tm2_aif2_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
| unsigned int asyncclk_rate; |
| int ret; |
| |
| switch (params_rate(params)) { |
| case 8000: |
| case 12000: |
| case 16000: |
| /* Highest possible ASYNCCLK frequency: 49.152MHz */ |
| asyncclk_rate = 49152000U; |
| break; |
| case 11025: |
| /* Highest possible ASYNCCLK frequency: 45.1584 MHz */ |
| asyncclk_rate = 45158400U; |
| break; |
| default: |
| dev_err(component->dev, "Not supported sample rate: %d\n", |
| params_rate(params)); |
| return -EINVAL; |
| } |
| |
| ret = snd_soc_component_set_pll(component, WM5110_FLL2_REFCLK, |
| ARIZONA_FLL_SRC_MCLK1, |
| MCLK_RATE, |
| asyncclk_rate); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to set FLL2 source: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_component_set_pll(component, WM5110_FLL2, |
| ARIZONA_FLL_SRC_MCLK1, |
| MCLK_RATE, |
| asyncclk_rate); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to start FLL2: %d\n", ret); |
| return ret; |
| } |
| |
| ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_ASYNCCLK, |
| ARIZONA_CLK_SRC_FLL2, |
| asyncclk_rate, |
| SND_SOC_CLOCK_IN); |
| if (ret < 0) { |
| dev_err(component->dev, "Failed to set ASYNCCLK source: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int tm2_aif2_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
| int ret; |
| |
| /* disable FLL2 */ |
| ret = snd_soc_component_set_pll(component, WM5110_FLL2, ARIZONA_FLL_SRC_MCLK1, |
| 0, 0); |
| if (ret < 0) |
| dev_err(component->dev, "Failed to stop FLL2: %d\n", ret); |
| |
| return ret; |
| } |
| |
| static struct snd_soc_ops tm2_aif2_ops = { |
| .hw_params = tm2_aif2_hw_params, |
| .hw_free = tm2_aif2_hw_free, |
| }; |
| |
| static int tm2_hdmi_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
| unsigned int bfs; |
| int bitwidth, ret; |
| |
| bitwidth = snd_pcm_format_width(params_format(params)); |
| if (bitwidth < 0) { |
| dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth); |
| return bitwidth; |
| } |
| |
| switch (bitwidth) { |
| case 48: |
| bfs = 64; |
| break; |
| case 16: |
| bfs = 32; |
| break; |
| default: |
| dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth); |
| return -EINVAL; |
| } |
| |
| switch (params_rate(params)) { |
| case 48000: |
| case 96000: |
| case 192000: |
| break; |
| default: |
| dev_err(rtd->card->dev, "Unsupported sample rate: %d\n", |
| params_rate(params)); |
| return -EINVAL; |
| } |
| |
| ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK, |
| 0, SAMSUNG_I2S_OPCLK_PCLK); |
| if (ret < 0) |
| return ret; |
| |
| ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static struct snd_soc_ops tm2_hdmi_ops = { |
| .hw_params = tm2_hdmi_hw_params, |
| }; |
| |
| static int tm2_mic_bias(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *kcontrol, int event) |
| { |
| struct snd_soc_card *card = w->dapm->card; |
| struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); |
| |
| switch (event) { |
| case SND_SOC_DAPM_PRE_PMU: |
| gpiod_set_value_cansleep(priv->gpio_mic_bias, 1); |
| break; |
| case SND_SOC_DAPM_POST_PMD: |
| gpiod_set_value_cansleep(priv->gpio_mic_bias, 0); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int tm2_set_bias_level(struct snd_soc_card *card, |
| struct snd_soc_dapm_context *dapm, |
| enum snd_soc_bias_level level) |
| { |
| struct snd_soc_pcm_runtime *rtd; |
| |
| rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]); |
| |
| if (dapm->dev != asoc_rtd_to_codec(rtd, 0)->dev) |
| return 0; |
| |
| switch (level) { |
| case SND_SOC_BIAS_STANDBY: |
| if (card->dapm.bias_level == SND_SOC_BIAS_OFF) |
| tm2_start_sysclk(card); |
| break; |
| case SND_SOC_BIAS_OFF: |
| tm2_stop_sysclk(card); |
| break; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static struct snd_soc_aux_dev tm2_speaker_amp_dev; |
| |
| static int tm2_late_probe(struct snd_soc_card *card) |
| { |
| struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card); |
| unsigned int ch_map[] = { 0, 1 }; |
| struct snd_soc_dai *amp_pdm_dai; |
| struct snd_soc_pcm_runtime *rtd; |
| struct snd_soc_dai *aif1_dai; |
| struct snd_soc_dai *aif2_dai; |
| int ret; |
| |
| rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF1]); |
| aif1_dai = asoc_rtd_to_codec(rtd, 0); |
| priv->component = asoc_rtd_to_codec(rtd, 0)->component; |
| |
| ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0); |
| if (ret < 0) { |
| dev_err(aif1_dai->dev, "Failed to set SYSCLK: %d\n", ret); |
| return ret; |
| } |
| |
| rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF2]); |
| aif2_dai = asoc_rtd_to_codec(rtd, 0); |
| |
| ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0); |
| if (ret < 0) { |
| dev_err(aif2_dai->dev, "Failed to set ASYNCCLK: %d\n", ret); |
| return ret; |
| } |
| |
| amp_pdm_dai = snd_soc_find_dai(&tm2_speaker_amp_dev.dlc); |
| if (!amp_pdm_dai) |
| return -ENODEV; |
| |
| /* Set the MAX98504 V/I sense PDM Tx DAI channel mapping */ |
| ret = snd_soc_dai_set_channel_map(amp_pdm_dai, ARRAY_SIZE(ch_map), |
| ch_map, 0, NULL); |
| if (ret < 0) |
| return ret; |
| |
| ret = snd_soc_dai_set_tdm_slot(amp_pdm_dai, 0x3, 0x0, 2, 16); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static const struct snd_kcontrol_new tm2_controls[] = { |
| SOC_DAPM_PIN_SWITCH("HP"), |
| SOC_DAPM_PIN_SWITCH("SPK"), |
| SOC_DAPM_PIN_SWITCH("RCV"), |
| SOC_DAPM_PIN_SWITCH("VPS"), |
| SOC_DAPM_PIN_SWITCH("HDMI"), |
| |
| SOC_DAPM_PIN_SWITCH("Main Mic"), |
| SOC_DAPM_PIN_SWITCH("Sub Mic"), |
| SOC_DAPM_PIN_SWITCH("Third Mic"), |
| |
| SOC_DAPM_PIN_SWITCH("Headset Mic"), |
| }; |
| |
| static const struct snd_soc_dapm_widget tm2_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("HP", NULL), |
| SND_SOC_DAPM_SPK("SPK", NULL), |
| SND_SOC_DAPM_SPK("RCV", NULL), |
| SND_SOC_DAPM_LINE("VPS", NULL), |
| SND_SOC_DAPM_LINE("HDMI", NULL), |
| |
| SND_SOC_DAPM_MIC("Main Mic", tm2_mic_bias), |
| SND_SOC_DAPM_MIC("Sub Mic", NULL), |
| SND_SOC_DAPM_MIC("Third Mic", NULL), |
| |
| SND_SOC_DAPM_MIC("Headset Mic", NULL), |
| }; |
| |
| static const struct snd_soc_component_driver tm2_component = { |
| .name = "tm2-audio", |
| }; |
| |
| static struct snd_soc_dai_driver tm2_ext_dai[] = { |
| { |
| .name = "Voice call", |
| .playback = { |
| .channels_min = 1, |
| .channels_max = 4, |
| .rate_min = 8000, |
| .rate_max = 48000, |
| .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | |
| SNDRV_PCM_RATE_48000), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| }, |
| .capture = { |
| .channels_min = 1, |
| .channels_max = 4, |
| .rate_min = 8000, |
| .rate_max = 48000, |
| .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | |
| SNDRV_PCM_RATE_48000), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| }, |
| }, |
| { |
| .name = "Bluetooth", |
| .playback = { |
| .channels_min = 1, |
| .channels_max = 4, |
| .rate_min = 8000, |
| .rate_max = 16000, |
| .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| }, |
| .capture = { |
| .channels_min = 1, |
| .channels_max = 2, |
| .rate_min = 8000, |
| .rate_max = 16000, |
| .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000), |
| .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| }, |
| }, |
| }; |
| |
| SND_SOC_DAILINK_DEFS(aif1, |
| DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)), |
| DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif1")), |
| DAILINK_COMP_ARRAY(COMP_EMPTY())); |
| |
| SND_SOC_DAILINK_DEFS(voice, |
| DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)), |
| DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif2")), |
| DAILINK_COMP_ARRAY(COMP_EMPTY())); |
| |
| SND_SOC_DAILINK_DEFS(bt, |
| DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)), |
| DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif3")), |
| DAILINK_COMP_ARRAY(COMP_EMPTY())); |
| |
| SND_SOC_DAILINK_DEFS(hdmi, |
| DAILINK_COMP_ARRAY(COMP_EMPTY()), |
| DAILINK_COMP_ARRAY(COMP_EMPTY()), |
| DAILINK_COMP_ARRAY(COMP_EMPTY())); |
| |
| static struct snd_soc_dai_link tm2_dai_links[] = { |
| { |
| .name = "WM5110 AIF1", |
| .stream_name = "HiFi Primary", |
| .ops = &tm2_aif1_ops, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| SND_SOC_DAILINK_REG(aif1), |
| }, { |
| .name = "WM5110 Voice", |
| .stream_name = "Voice call", |
| .ops = &tm2_aif2_ops, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| .ignore_suspend = 1, |
| SND_SOC_DAILINK_REG(voice), |
| }, { |
| .name = "WM5110 BT", |
| .stream_name = "Bluetooth", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| .ignore_suspend = 1, |
| SND_SOC_DAILINK_REG(bt), |
| }, { |
| .name = "HDMI", |
| .stream_name = "i2s1", |
| .ops = &tm2_hdmi_ops, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS, |
| SND_SOC_DAILINK_REG(hdmi), |
| } |
| }; |
| |
| static struct snd_soc_card tm2_card = { |
| .owner = THIS_MODULE, |
| |
| .dai_link = tm2_dai_links, |
| .controls = tm2_controls, |
| .num_controls = ARRAY_SIZE(tm2_controls), |
| .dapm_widgets = tm2_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(tm2_dapm_widgets), |
| .aux_dev = &tm2_speaker_amp_dev, |
| .num_aux_devs = 1, |
| |
| .late_probe = tm2_late_probe, |
| .set_bias_level = tm2_set_bias_level, |
| }; |
| |
| static int tm2_probe(struct platform_device *pdev) |
| { |
| struct device_node *cpu_dai_node[2] = {}; |
| struct device_node *codec_dai_node[2] = {}; |
| const char *cells_name = NULL; |
| struct device *dev = &pdev->dev; |
| struct snd_soc_card *card = &tm2_card; |
| struct tm2_machine_priv *priv; |
| struct snd_soc_dai_link *dai_link; |
| int num_codecs, ret, i; |
| |
| priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
| if (!priv) |
| return -ENOMEM; |
| |
| snd_soc_card_set_drvdata(card, priv); |
| card->dev = dev; |
| |
| priv->gpio_mic_bias = devm_gpiod_get(dev, "mic-bias", GPIOD_OUT_HIGH); |
| if (IS_ERR(priv->gpio_mic_bias)) { |
| dev_err(dev, "Failed to get mic bias gpio\n"); |
| return PTR_ERR(priv->gpio_mic_bias); |
| } |
| |
| ret = snd_soc_of_parse_card_name(card, "model"); |
| if (ret < 0) { |
| dev_err(dev, "Card name is not specified\n"); |
| return ret; |
| } |
| |
| ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing"); |
| if (ret < 0) { |
| dev_err(dev, "Audio routing is not specified or invalid\n"); |
| return ret; |
| } |
| |
| card->aux_dev[0].dlc.of_node = of_parse_phandle(dev->of_node, |
| "audio-amplifier", 0); |
| if (!card->aux_dev[0].dlc.of_node) { |
| dev_err(dev, "audio-amplifier property invalid or missing\n"); |
| return -EINVAL; |
| } |
| |
| num_codecs = of_count_phandle_with_args(dev->of_node, "audio-codec", |
| NULL); |
| |
| /* Skip the HDMI link if not specified in DT */ |
| if (num_codecs > 1) { |
| card->num_links = ARRAY_SIZE(tm2_dai_links); |
| cells_name = "#sound-dai-cells"; |
| } else { |
| card->num_links = ARRAY_SIZE(tm2_dai_links) - 1; |
| } |
| |
| for (i = 0; i < num_codecs; i++) { |
| struct of_phandle_args args; |
| |
| ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller", |
| cells_name, i, &args); |
| if (ret) { |
| dev_err(dev, "i2s-controller property parse error: %d\n", i); |
| ret = -EINVAL; |
| goto dai_node_put; |
| } |
| cpu_dai_node[i] = args.np; |
| |
| codec_dai_node[i] = of_parse_phandle(dev->of_node, |
| "audio-codec", i); |
| if (!codec_dai_node[i]) { |
| dev_err(dev, "audio-codec property parse error\n"); |
| ret = -EINVAL; |
| goto dai_node_put; |
| } |
| } |
| |
| /* Initialize WM5110 - I2S and HDMI - I2S1 DAI links */ |
| for_each_card_prelinks(card, i, dai_link) { |
| unsigned int dai_index = 0; /* WM5110 */ |
| |
| dai_link->cpus->name = NULL; |
| dai_link->platforms->name = NULL; |
| |
| if (num_codecs > 1 && i == card->num_links - 1) |
| dai_index = 1; /* HDMI */ |
| |
| dai_link->codecs->of_node = codec_dai_node[dai_index]; |
| dai_link->cpus->of_node = cpu_dai_node[dai_index]; |
| dai_link->platforms->of_node = cpu_dai_node[dai_index]; |
| } |
| |
| if (num_codecs > 1) { |
| struct of_phandle_args args; |
| |
| /* HDMI DAI link (I2S1) */ |
| i = card->num_links - 1; |
| |
| ret = of_parse_phandle_with_fixed_args(dev->of_node, |
| "audio-codec", 0, 1, &args); |
| if (ret) { |
| dev_err(dev, "audio-codec property parse error\n"); |
| goto dai_node_put; |
| } |
| |
| ret = snd_soc_get_dai_name(&args, &card->dai_link[i].codecs->dai_name); |
| if (ret) { |
| dev_err(dev, "Unable to get codec_dai_name\n"); |
| goto dai_node_put; |
| } |
| } |
| |
| ret = devm_snd_soc_register_component(dev, &tm2_component, |
| tm2_ext_dai, ARRAY_SIZE(tm2_ext_dai)); |
| if (ret < 0) { |
| dev_err(dev, "Failed to register component: %d\n", ret); |
| goto dai_node_put; |
| } |
| |
| ret = devm_snd_soc_register_card(dev, card); |
| if (ret < 0) { |
| if (ret != -EPROBE_DEFER) |
| dev_err(dev, "Failed to register card: %d\n", ret); |
| goto dai_node_put; |
| } |
| |
| dai_node_put: |
| for (i = 0; i < num_codecs; i++) { |
| of_node_put(codec_dai_node[i]); |
| of_node_put(cpu_dai_node[i]); |
| } |
| |
| of_node_put(card->aux_dev[0].dlc.of_node); |
| |
| return ret; |
| } |
| |
| static int tm2_pm_prepare(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| |
| return tm2_stop_sysclk(card); |
| } |
| |
| static void tm2_pm_complete(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| |
| tm2_start_sysclk(card); |
| } |
| |
| static const struct dev_pm_ops tm2_pm_ops = { |
| .prepare = tm2_pm_prepare, |
| .suspend = snd_soc_suspend, |
| .resume = snd_soc_resume, |
| .complete = tm2_pm_complete, |
| .freeze = snd_soc_suspend, |
| .thaw = snd_soc_resume, |
| .poweroff = snd_soc_poweroff, |
| .restore = snd_soc_resume, |
| }; |
| |
| static const struct of_device_id tm2_of_match[] = { |
| { .compatible = "samsung,tm2-audio" }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, tm2_of_match); |
| |
| static struct platform_driver tm2_driver = { |
| .driver = { |
| .name = "tm2-audio", |
| .pm = &tm2_pm_ops, |
| .of_match_table = tm2_of_match, |
| }, |
| .probe = tm2_probe, |
| }; |
| module_platform_driver(tm2_driver); |
| |
| MODULE_AUTHOR("Inha Song <ideal.song@samsung.com>"); |
| MODULE_DESCRIPTION("ALSA SoC Exynos TM2 Audio Support"); |
| MODULE_LICENSE("GPL v2"); |