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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | // SPDX-License-Identifier: GPL-2.0-or-later /* * SoC audio for HP iPAQ hx4700 * * Copyright (c) 2009 Philipp Zabel */ #include <linux/module.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/gpio.h> #include <sound/core.h> #include <sound/jack.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <mach/hx4700.h> #include <asm/mach-types.h> #include "pxa2xx-i2s.h" static struct snd_soc_jack hs_jack; /* Headphones jack detection DAPM pin */ static struct snd_soc_jack_pin hs_jack_pin[] = { { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE, }, { .pin = "Speaker", /* disable speaker when hp jack is inserted */ .mask = SND_JACK_HEADPHONE, .invert = 1, }, }; /* Headphones jack detection GPIO */ static struct snd_soc_jack_gpio hs_jack_gpio = { .gpio = GPIO75_HX4700_EARPHONE_nDET, .invert = true, .name = "hp-gpio", .report = SND_JACK_HEADPHONE, .debounce_time = 200, }; /* * iPAQ hx4700 uses I2S for capture and playback. */ static int hx4700_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 *codec_dai = asoc_rtd_to_codec(rtd, 0); struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); int ret = 0; /* set the I2S system clock as output */ ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, SND_SOC_CLOCK_OUT); if (ret < 0) return ret; /* inform codec driver about clock freq * * (PXA I2S always uses divider 256) */ ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params), SND_SOC_CLOCK_IN); if (ret < 0) return ret; return 0; } static const struct snd_soc_ops hx4700_ops = { .hw_params = hx4700_hw_params, }; static int hx4700_spk_power(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event)); return 0; } static int hx4700_hp_power(struct snd_soc_dapm_widget *w, struct snd_kcontrol *k, int event) { gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event)); return 0; } /* hx4700 machine dapm widgets */ static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power), SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power), SND_SOC_DAPM_MIC("Built-in Microphone", NULL), }; /* hx4700 machine audio_map */ static const struct snd_soc_dapm_route hx4700_audio_map[] = { /* Headphone connected to LOUT, ROUT */ {"Headphone Jack", NULL, "LOUT"}, {"Headphone Jack", NULL, "ROUT"}, /* Speaker connected to MOUT2 */ {"Speaker", NULL, "MOUT2"}, /* Microphone connected to MICIN */ {"MICIN", NULL, "Built-in Microphone"}, {"AIN", NULL, "MICOUT"}, }; /* * Logic for a ak4641 as connected on a HP iPAQ hx4700 */ static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd) { int err; /* Jack detection API stuff */ err = snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE, &hs_jack, hs_jack_pin, ARRAY_SIZE(hs_jack_pin)); if (err) return err; err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio); return err; } /* hx4700 digital audio interface glue - connects codec <--> CPU */ SND_SOC_DAILINK_DEFS(ak4641, DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")), DAILINK_COMP_ARRAY(COMP_CODEC("ak4641.0-0012", "ak4641-hifi")), DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); static struct snd_soc_dai_link hx4700_dai = { .name = "ak4641", .stream_name = "AK4641", .init = hx4700_ak4641_init, .dai_fmt = SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS, .ops = &hx4700_ops, SND_SOC_DAILINK_REG(ak4641), }; /* hx4700 audio machine driver */ static struct snd_soc_card snd_soc_card_hx4700 = { .name = "iPAQ hx4700", .owner = THIS_MODULE, .dai_link = &hx4700_dai, .num_links = 1, .dapm_widgets = hx4700_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets), .dapm_routes = hx4700_audio_map, .num_dapm_routes = ARRAY_SIZE(hx4700_audio_map), .fully_routed = true, }; static struct gpio hx4700_audio_gpios[] = { { GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" }, { GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" }, }; static int hx4700_audio_probe(struct platform_device *pdev) { int ret; if (!machine_is_h4700()) return -ENODEV; ret = gpio_request_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios)); if (ret) return ret; snd_soc_card_hx4700.dev = &pdev->dev; ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_hx4700); if (ret) gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios)); return ret; } static int hx4700_audio_remove(struct platform_device *pdev) { gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0); gpio_set_value(GPIO107_HX4700_SPK_nSD, 0); gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios)); return 0; } static struct platform_driver hx4700_audio_driver = { .driver = { .name = "hx4700-audio", .pm = &snd_soc_pm_ops, }, .probe = hx4700_audio_probe, .remove = hx4700_audio_remove, }; module_platform_driver(hx4700_audio_driver); MODULE_AUTHOR("Philipp Zabel"); MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:hx4700-audio"); |