+/*
+ * sdp4430.c -- SoC audio for TI OMAP4430 SDP
+ *
+ * Author: Misael Lopez Cruz <x0052729@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <plat/hardware.h>
+#include <plat/mux.h>
+
+#include "mcpdm.h"
+#include "omap-mcpdm.h"
+#include "omap-pcm.h"
+#include "../codecs/twl6040.h"
+
+static int twl6040_power_mode;
+
+static int sdp4430_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+ int clk_id, freq;
+ int ret;
+
+ if (twl6040_power_mode) {
+ clk_id = TWL6040_SYSCLK_SEL_HPPLL;
+ freq = 38400000;
+ } else {
+ clk_id = TWL6040_SYSCLK_SEL_LPPLL;
+ freq = 32768;
+ }
+
+ /* set the codec mclk */
+ ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
+ SND_SOC_CLOCK_IN);
+ if (ret) {
+ printk(KERN_ERR "can't set codec system clock\n");
+ return ret;
+ }
+}
+
+static struct snd_soc_ops sdp4430_ops = {
+ .hw_params = sdp4430_hw_params,
+};
+
+static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = twl6040_power_mode;
+ return 0;
+}
+
+static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ if (twl6040_power_mode == ucontrol->value.integer.value[0])
+ return 0;
+
+ twl6040_power_mode = ucontrol->value.integer.value[0];
+
+ return 1;
+}
+
+static const char *power_texts[] = {"Low-Power", "High-Performance"};
+
+static const struct soc_enum sdp4430_enum[] = {
+ SOC_ENUM_SINGLE_EXT(2, power_texts),
+};
+
+static const struct snd_kcontrol_new sdp4430_controls[] = {
+ SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
+ sdp4430_get_power_mode, sdp4430_set_power_mode),
+};
+
+/* SDP4430 machine DAPM */
+static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
+ SND_SOC_DAPM_MIC("Ext Mic", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+ SND_SOC_DAPM_MIC("Headset Mic", NULL),
+ SND_SOC_DAPM_HP("Headset Stereophone", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ /* External Mics: MAINMIC, SUBMIC with bias*/
+ {"MAINMIC", NULL, "Main Mic Bias"},
+ {"SUBMIC", NULL, "Main Mic Bias"},
+ {"Main Mic Bias", NULL, "Ext Mic"},
+
+ /* External Speakers: HFL, HFR */
+ {"Ext Spk", NULL, "HFL"},
+ {"Ext Spk", NULL, "HFR"},
+
+ /* Headset Mic: HSMIC with bias */
+ {"HSMIC", NULL, "Headset Mic Bias"},
+ {"Headset Mic Bias", NULL, "Headset Mic"},
+
+ /* Headset Stereophone (Headphone): HSOL, HSOR */
+ {"Headset Stereophone", NULL, "HSOL"},
+ {"Headset Stereophone", NULL, "HSOR"},
+};
+
+static int sdp4430_twl6040_init(struct snd_soc_codec *codec)
+{
+ int ret;
+
+ /* Add SDP4430 specific controls */
+ ret = snd_soc_add_controls(codec, sdp4430_controls,
+ ARRAY_SIZE(sdp4430_controls));
+ if (ret)
+ return ret;
+
+ /* Add SDP4430 specific widgets */
+ ret = snd_soc_dapm_new_controls(codec, sdp4430_twl6040_dapm_widgets,
+ ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
+ if (ret)
+ return ret;
+
+ /* Set up SDP4430 specific audio path audio_map */
+ snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+ /* SDP4430 connected pins */
+ snd_soc_dapm_enable_pin(codec, "Ext Mic");
+ snd_soc_dapm_enable_pin(codec, "Ext Spk");
+ snd_soc_dapm_enable_pin(codec, "Headset Mic");
+ snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
+
+ /* TWL6040 not connected pins */
+ snd_soc_dapm_nc_pin(codec, "AFML");
+ snd_soc_dapm_nc_pin(codec, "AFMR");
+
+ ret = snd_soc_dapm_sync(codec);
+
+ return ret;
+}
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link sdp4430_dai = {
+ .name = "TWL6040",
+ .stream_name = "TWL6040",
+ .cpu_dai = &omap_mcpdm_dai,
+ .codec_dai = &twl6040_dai,
+ .init = sdp4430_twl6040_init,
+};
+
+/* Audio machine driver */
+static struct snd_soc_card snd_soc_sdp4430 = {
+ .name = "SDP4430",
+ .platform = &omap_soc_platform,
+ .dai_link = &sdp4430_dai,
+ .num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device sdp4430_snd_devdata = {
+ .card = &snd_soc_sdp4430,
+ .codec_dev = &soc_codec_dev_twl6040,
+};
+
+static struct platform_device *sdp4430_snd_device;
+
+static int __init sdp4430_soc_init(void)
+{
+ int ret;
+
+ if (!machine_is_omap_4430sdp()) {
+ pr_debug("Not SDP4430!\n");
+ return -ENODEV;
+ }
+ printk(KERN_INFO "SDP4430 SoC init\n");
+
+ sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!sdp4430_snd_device) {
+ printk(KERN_ERR "Platform device allocation failed\n");
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(sdp4430_snd_device, &sdp4430_snd_devdata);
+ sdp4430_snd_devdata.dev = &sdp4430_snd_device->dev;
+
+ ret = platform_device_add(sdp4430_snd_device);
+ if (ret)
+ goto err;
+
+ /* Codec starts in HP mode */
+ twl6040_power_mode = 1;
+
+ return 0;
+
+err:
+ printk(KERN_ERR "Unable to add platform device\n");
+ platform_device_put(sdp4430_snd_device);
+ return ret;
+}
+module_init(sdp4430_soc_init);
+
+static void __exit sdp4430_soc_exit(void)
+{
+ platform_device_unregister(sdp4430_snd_device);
+}
+module_exit(sdp4430_soc_exit);
+
+MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
+MODULE_DESCRIPTION("ALSA SoC SDP4430");
+MODULE_LICENSE("GPL");
+
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff