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+/*
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+ * sdp4430.c -- SoC audio for TI OMAP4430 SDP
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+ *
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+ * Author: Misael Lopez Cruz <x0052729@ti.com>
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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+ * 02110-1301 USA
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+ *
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+ */
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+
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+#include <linux/clk.h>
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+#include <linux/platform_device.h>
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dapm.h>
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+
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+#include <asm/mach-types.h>
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+#include <plat/hardware.h>
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+#include <plat/mux.h>
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+
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+#include "mcpdm.h"
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+#include "omap-mcpdm.h"
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+#include "omap-pcm.h"
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+#include "../codecs/twl6040.h"
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+
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+static int twl6040_power_mode;
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+
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+static int sdp4430_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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+ int clk_id, freq;
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+ int ret;
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+
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+ if (twl6040_power_mode) {
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+ clk_id = TWL6040_SYSCLK_SEL_HPPLL;
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+ freq = 38400000;
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+ } else {
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+ clk_id = TWL6040_SYSCLK_SEL_LPPLL;
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+ freq = 32768;
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+ }
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+
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+ /* set the codec mclk */
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+ ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
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+ SND_SOC_CLOCK_IN);
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+ if (ret) {
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+ printk(KERN_ERR "can't set codec system clock\n");
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+ return ret;
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+ }
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+}
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+
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+static struct snd_soc_ops sdp4430_ops = {
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+ .hw_params = sdp4430_hw_params,
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+};
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+
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+static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ ucontrol->value.integer.value[0] = twl6040_power_mode;
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+ return 0;
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+}
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+
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+static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ if (twl6040_power_mode == ucontrol->value.integer.value[0])
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+ return 0;
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+
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+ twl6040_power_mode = ucontrol->value.integer.value[0];
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+
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+ return 1;
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+}
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+
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+static const char *power_texts[] = {"Low-Power", "High-Performance"};
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+
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+static const struct soc_enum sdp4430_enum[] = {
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+ SOC_ENUM_SINGLE_EXT(2, power_texts),
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+};
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+
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+static const struct snd_kcontrol_new sdp4430_controls[] = {
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+ SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
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+ sdp4430_get_power_mode, sdp4430_set_power_mode),
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+};
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+
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+/* SDP4430 machine DAPM */
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+static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
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+ SND_SOC_DAPM_MIC("Ext Mic", NULL),
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+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
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+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
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+ SND_SOC_DAPM_HP("Headset Stereophone", NULL),
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+ SND_SOC_DAPM_SPK("Earphone Spk", NULL),
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+};
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+
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+static const struct snd_soc_dapm_route audio_map[] = {
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+ /* External Mics: MAINMIC, SUBMIC with bias*/
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+ {"MAINMIC", NULL, "Main Mic Bias"},
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+ {"SUBMIC", NULL, "Main Mic Bias"},
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+ {"Main Mic Bias", NULL, "Ext Mic"},
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+
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+ /* External Speakers: HFL, HFR */
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+ {"Ext Spk", NULL, "HFL"},
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+ {"Ext Spk", NULL, "HFR"},
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+
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+ /* Headset Mic: HSMIC with bias */
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+ {"HSMIC", NULL, "Headset Mic Bias"},
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+ {"Headset Mic Bias", NULL, "Headset Mic"},
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+
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+ /* Headset Stereophone (Headphone): HSOL, HSOR */
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+ {"Headset Stereophone", NULL, "HSOL"},
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+ {"Headset Stereophone", NULL, "HSOR"},
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+
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+ /* Earphone speaker */
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+ {"Earphone Spk", NULL, "EP"},
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+};
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+
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+static int sdp4430_twl6040_init(struct snd_soc_codec *codec)
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+{
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+ int ret;
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+
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+ /* Add SDP4430 specific controls */
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+ ret = snd_soc_add_controls(codec, sdp4430_controls,
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+ ARRAY_SIZE(sdp4430_controls));
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+ if (ret)
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+ return ret;
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+
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+ /* Add SDP4430 specific widgets */
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+ ret = snd_soc_dapm_new_controls(codec, sdp4430_twl6040_dapm_widgets,
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+ ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
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+ if (ret)
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+ return ret;
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+
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+ /* Set up SDP4430 specific audio path audio_map */
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+ snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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+
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+ /* SDP4430 connected pins */
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+ snd_soc_dapm_enable_pin(codec, "Ext Mic");
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+ snd_soc_dapm_enable_pin(codec, "Ext Spk");
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+ snd_soc_dapm_enable_pin(codec, "Headset Mic");
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+ snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
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+
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+ /* TWL6040 not connected pins */
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+ snd_soc_dapm_nc_pin(codec, "AFML");
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+ snd_soc_dapm_nc_pin(codec, "AFMR");
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+
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+ ret = snd_soc_dapm_sync(codec);
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+
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+ return ret;
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+}
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+
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+/* Digital audio interface glue - connects codec <--> CPU */
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+static struct snd_soc_dai_link sdp4430_dai = {
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+ .name = "TWL6040",
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+ .stream_name = "TWL6040",
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+ .cpu_dai = &omap_mcpdm_dai,
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+ .codec_dai = &twl6040_dai,
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+ .init = sdp4430_twl6040_init,
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+ .ops = &sdp4430_ops,
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+};
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+
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+/* Audio machine driver */
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+static struct snd_soc_card snd_soc_sdp4430 = {
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+ .name = "SDP4430",
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+ .platform = &omap_soc_platform,
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+ .dai_link = &sdp4430_dai,
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+ .num_links = 1,
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+};
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+
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+/* Audio subsystem */
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+static struct snd_soc_device sdp4430_snd_devdata = {
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+ .card = &snd_soc_sdp4430,
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+ .codec_dev = &soc_codec_dev_twl6040,
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+};
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+
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+static struct platform_device *sdp4430_snd_device;
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+
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+static int __init sdp4430_soc_init(void)
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+{
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+ int ret;
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+
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+ if (!machine_is_omap_4430sdp()) {
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+ pr_debug("Not SDP4430!\n");
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+ return -ENODEV;
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+ }
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+ printk(KERN_INFO "SDP4430 SoC init\n");
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+
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+ sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
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+ if (!sdp4430_snd_device) {
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+ printk(KERN_ERR "Platform device allocation failed\n");
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+ return -ENOMEM;
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+ }
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+
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+ platform_set_drvdata(sdp4430_snd_device, &sdp4430_snd_devdata);
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+ sdp4430_snd_devdata.dev = &sdp4430_snd_device->dev;
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+
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+ ret = platform_device_add(sdp4430_snd_device);
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+ if (ret)
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+ goto err;
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+
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+ /* Codec starts in HP mode */
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+ twl6040_power_mode = 1;
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+
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+ return 0;
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+
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+err:
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+ printk(KERN_ERR "Unable to add platform device\n");
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+ platform_device_put(sdp4430_snd_device);
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+ return ret;
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+}
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+module_init(sdp4430_soc_init);
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+
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+static void __exit sdp4430_soc_exit(void)
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+{
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+ platform_device_unregister(sdp4430_snd_device);
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+}
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+module_exit(sdp4430_soc_exit);
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+
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+MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
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+MODULE_DESCRIPTION("ALSA SoC SDP4430");
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+MODULE_LICENSE("GPL");
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+
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Mark Brown