--- /dev/null
+/*
+ * LM4857 AMP driver
+ *
+ * Copyright 2007 Wolfson Microelectronics PLC.
+ * Author: Graeme Gregory
+ * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
+ * Copyright 2011 Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+struct lm4857 {
+ struct i2c_client *i2c;
+ uint8_t mode;
+};
+
+static const uint8_t lm4857_default_regs[] = {
+ 0x00, 0x00, 0x00, 0x00,
+};
+
+/* The register offsets in the cache array */
+#define LM4857_MVOL 0
+#define LM4857_LVOL 1
+#define LM4857_RVOL 2
+#define LM4857_CTRL 3
+
+/* the shifts required to set these bits */
+#define LM4857_3D 5
+#define LM4857_WAKEUP 5
+#define LM4857_EPGAIN 4
+
+static int lm4857_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int value)
+{
+ uint8_t data;
+ int ret;
+
+ ret = snd_soc_cache_write(codec, reg, value);
+ if (ret < 0)
+ return ret;
+
+ data = (reg << 6) | value;
+ ret = i2c_master_send(codec->control_data, &data, 1);
+ if (ret != 1) {
+ dev_err(codec->dev, "Failed to write register: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static unsigned int lm4857_read(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ unsigned int val;
+ int ret;
+
+ ret = snd_soc_cache_read(codec, reg, &val);
+ if (ret)
+ return -1;
+
+ return val;
+}
+
+static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
+
+ ucontrol->value.integer.value[0] = lm4857->mode;
+
+ return 0;
+}
+
+static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
+ uint8_t value = ucontrol->value.integer.value[0];
+
+ lm4857->mode = value;
+
+ if (codec->dapm.bias_level == SND_SOC_BIAS_ON)
+ snd_soc_update_bits(codec, LM4857_CTRL, 0x0F, value + 6);
+
+ return 1;
+}
+
+static int lm4857_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ snd_soc_update_bits(codec, LM4857_CTRL, 0x0F, lm4857->mode + 6);
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ snd_soc_update_bits(codec, LM4857_CTRL, 0x0F, 0);
+ break;
+ default:
+ break;
+ }
+
+ codec->dapm.bias_level = level;
+
+ return 0;
+}
+
+static const char *lm4857_mode[] = {
+ "Earpiece",
+ "Loudspeaker",
+ "Loudspeaker + Headphone",
+ "Headphone",
+};
+
+static const struct soc_enum lm4857_mode_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode);
+
+static const struct snd_soc_dapm_widget lm4857_dapm_widgets[] = {
+ SND_SOC_DAPM_INPUT("IN"),
+
+ SND_SOC_DAPM_OUTPUT("LS"),
+ SND_SOC_DAPM_OUTPUT("HP"),
+ SND_SOC_DAPM_OUTPUT("EP"),
+};
+
+static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
+static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
+
+static const struct snd_kcontrol_new lm4857_controls[] = {
+ SOC_SINGLE_TLV("Left Playback Volume", LM4857_LVOL, 0, 31, 0,
+ stereo_tlv),
+ SOC_SINGLE_TLV("Right Playback Volume", LM4857_RVOL, 0, 31, 0,
+ stereo_tlv),
+ SOC_SINGLE_TLV("Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
+ mono_tlv),
+ SOC_SINGLE("Spk 3D Playback Switch", LM4857_LVOL, LM4857_3D, 1, 0),
+ SOC_SINGLE("HP 3D Playback Switch", LM4857_RVOL, LM4857_3D, 1, 0),
+ SOC_SINGLE("Fast Wakeup Playback Switch", LM4857_CTRL,
+ LM4857_WAKEUP, 1, 0),
+ SOC_SINGLE("Earpiece 6dB Playback Switch", LM4857_CTRL,
+ LM4857_EPGAIN, 1, 0),
+
+ SOC_ENUM_EXT("Mode", lm4857_mode_enum,
+ lm4857_get_mode, lm4857_set_mode),
+};
+
+/* There is a demux inbetween the the input signal and the output signals.
+ * Currently there is no easy way to model it in ASoC and since it does not make
+ * much of a difference in practice simply connect the input direclty to the
+ * outputs. */
+static const struct snd_soc_dapm_route lm4857_routes[] = {
+ {"LS", NULL, "IN"},
+ {"HP", NULL, "IN"},
+ {"EP", NULL, "IN"},
+};
+
+static int lm4857_probe(struct snd_soc_codec *codec)
+{
+ struct lm4857 *lm4857 = snd_soc_codec_get_drvdata(codec);
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+ int ret;
+
+ codec->control_data = lm4857->i2c;
+
+ ret = snd_soc_add_controls(codec, lm4857_controls,
+ ARRAY_SIZE(lm4857_controls));
+ if (ret)
+ return ret;
+
+ ret = snd_soc_dapm_new_controls(dapm, lm4857_dapm_widgets,
+ ARRAY_SIZE(lm4857_dapm_widgets));
+ if (ret)
+ return ret;
+
+ ret = snd_soc_dapm_add_routes(dapm, lm4857_routes,
+ ARRAY_SIZE(lm4857_routes));
+ if (ret)
+ return ret;
+
+ snd_soc_dapm_new_widgets(dapm);
+
+ return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_lm4857 = {
+ .write = lm4857_write,
+ .read = lm4857_read,
+ .probe = lm4857_probe,
+ .reg_cache_size = ARRAY_SIZE(lm4857_default_regs),
+ .reg_word_size = sizeof(uint8_t),
+ .reg_cache_default = lm4857_default_regs,
+ .set_bias_level = lm4857_set_bias_level,
+};
+
+static int __devinit lm4857_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct lm4857 *lm4857;
+ int ret;
+
+ lm4857 = kzalloc(sizeof(*lm4857), GFP_KERNEL);
+ if (!lm4857)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, lm4857);
+
+ lm4857->i2c = i2c;
+
+ ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_lm4857, NULL, 0);
+
+ if (ret) {
+ kfree(lm4857);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __devexit lm4857_i2c_remove(struct i2c_client *i2c)
+{
+ struct lm4857 *lm4857 = i2c_get_clientdata(i2c);
+
+ snd_soc_unregister_codec(&i2c->dev);
+ kfree(lm4857);
+
+ return 0;
+}
+
+static const struct i2c_device_id lm4857_i2c_id[] = {
+ { "lm4857", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm4857_i2c_id);
+
+static struct i2c_driver lm4857_i2c_driver = {
+ .driver = {
+ .name = "lm4857",
+ .owner = THIS_MODULE,
+ },
+ .probe = lm4857_i2c_probe,
+ .remove = __devexit_p(lm4857_i2c_remove),
+ .id_table = lm4857_i2c_id,
+};
+
+static int __init lm4857_init(void)
+{
+ return i2c_add_driver(&lm4857_i2c_driver);
+}
+module_init(lm4857_init);
+
+static void __exit lm4857_exit(void)
+{
+ i2c_del_driver(&lm4857_i2c_driver);
+}
+module_exit(lm4857_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("LM4857 amplifier driver");
+MODULE_LICENSE("GPL");
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
-#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
-#include <sound/tlv.h>
#include <asm/mach-types.h>
#include <mach/regs-clock.h>
#include <plat/regs-iis.h>
#include "../codecs/wm8753.h"
-#include "lm4857.h"
#include "dma.h"
#include "s3c24xx-i2s.h"
static struct snd_soc_card neo1973;
-static struct i2c_client *i2c;
static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
.hw_free = neo1973_voice_hw_free,
};
-static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
-
-static void lm4857_write_regs(void)
-{
- pr_debug("Entered %s\n", __func__);
-
- if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
- printk(KERN_ERR "lm4857: i2c write failed\n");
-}
-
-static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct soc_mixer_control *mc =
- (struct soc_mixer_control *)kcontrol->private_value;
- int reg = mc->reg;
- int shift = mc->shift;
- int mask = mc->max;
-
- pr_debug("Entered %s\n", __func__);
-
- ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
- return 0;
-}
-
-static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- struct soc_mixer_control *mc =
- (struct soc_mixer_control *)kcontrol->private_value;
- int reg = mc->reg;
- int shift = mc->shift;
- int mask = mc->max;
-
- if (((lm4857_regs[reg] >> shift) & mask) ==
- ucontrol->value.integer.value[0])
- return 0;
-
- lm4857_regs[reg] &= ~(mask << shift);
- lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
- lm4857_write_regs();
- return 1;
-}
-
-static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
-
- pr_debug("Entered %s\n", __func__);
-
- if (value)
- value -= 5;
-
- ucontrol->value.integer.value[0] = value;
- return 0;
-}
-
-static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
-{
- u8 value = ucontrol->value.integer.value[0];
-
- pr_debug("Entered %s\n", __func__);
-
- if (value)
- value += 5;
-
- if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
- return 0;
-
- lm4857_regs[LM4857_CTRL] &= 0xF0;
- lm4857_regs[LM4857_CTRL] |= value;
- lm4857_write_regs();
- return 1;
-}
-
static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
- SND_SOC_DAPM_LINE("Audio Out", NULL),
SND_SOC_DAPM_LINE("GSM Line Out", NULL),
SND_SOC_DAPM_LINE("GSM Line In", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
};
-static const struct snd_soc_dapm_route dapm_routes[] = {
-
- /* Connections to the lm4857 amp */
- {"Audio Out", NULL, "LOUT1"},
- {"Audio Out", NULL, "ROUT1"},
-
+static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
/* Connections to the GSM Module */
{"GSM Line Out", NULL, "MONO1"},
{"GSM Line Out", NULL, "MONO2"},
{"ACIN", NULL, "ACOP"},
};
-static const char *lm4857_mode[] = {
- "Off",
- "Call Speaker",
- "Stereo Speakers",
- "Stereo Speakers + Headphones",
- "Headphones"
-};
-
-static const struct soc_enum lm4857_mode_enum[] = {
- SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
-};
-
-static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
-static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
-
-static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
- SOC_DAPM_PIN_SWITCH("Audio Out"),
+static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
SOC_DAPM_PIN_SWITCH("GSM Line Out"),
SOC_DAPM_PIN_SWITCH("GSM Line In"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("Call Mic"),
-
- SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
- lm4857_get_reg, lm4857_set_reg, stereo_tlv),
- SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
- lm4857_get_reg, lm4857_set_reg, stereo_tlv),
- SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
- lm4857_get_reg, lm4857_set_reg, mono_tlv),
- SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
- lm4857_get_mode, lm4857_set_mode),
- SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
- lm4857_get_reg, lm4857_set_reg),
- SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
- lm4857_get_reg, lm4857_set_reg),
- SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
- lm4857_get_reg, lm4857_set_reg),
- SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
- lm4857_get_reg, lm4857_set_reg),
};
+
/*
* This is an example machine initialisation for a wm8753 connected to a
* neo1973 II. It is missing logic to detect hp/mic insertions and logic
/* Add neo1973 specific widgets */
snd_soc_dapm_new_controls(dapm, wm8753_dapm_widgets,
- ARRAY_SIZE(wm8753_dapm_widgets));
+ ARRAY_SIZE(wm8753_dapm_widgets));
/* set endpoints to default mode */
- snd_soc_dapm_disable_pin(dapm, "Audio Out");
snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
snd_soc_dapm_disable_pin(dapm, "GSM Line In");
snd_soc_dapm_disable_pin(dapm, "Headset Mic");
snd_soc_dapm_disable_pin(dapm, "Call Mic");
/* add neo1973 specific controls */
- err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
- ARRAY_SIZE(8753_neo1973_controls));
+ err = snd_soc_add_controls(codec, neo1973_wm8753_controls,
+ ARRAY_SIZE(neo1973_wm8753_controls));
if (err < 0)
return err;
/* set up neo1973 specific audio routes */
- err = snd_soc_dapm_add_routes(dapm, dapm_routes,
- ARRAY_SIZE(dapm_routes));
+ err = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
+ ARRAY_SIZE(neo1973_wm8753_routes));
snd_soc_dapm_sync(dapm);
return 0;
}
+static const struct snd_soc_dapm_route neo1973_lm4857_routes[] = {
+ {"Amp IN", NULL, "ROUT1"},
+ {"Amp IN", NULL, "LOUT1"},
+
+ {"Handset Spk", NULL, "Amp EP"},
+ {"Stereo Out", NULL, "Amp LS"},
+ {"Headphone", NULL, "Amp HP"},
+};
+
+static const struct snd_soc_dapm_widget neo1973_lm4857_dapm_widgets[] = {
+ SND_SOC_DAPM_SPK("Handset Spk", NULL),
+ SND_SOC_DAPM_SPK("Stereo Out", NULL),
+ SND_SOC_DAPM_HP("Headphone", NULL),
+};
+
+static int neo1973_lm4857_init(struct snd_soc_dapm_context *dapm)
+{
+ int ret;
+
+ ret = snd_soc_dapm_new_controls(dapm, neo1973_lm4857_dapm_widgets,
+ ARRAY_SIZE(neo1973_lm4857_dapm_widgets));
+ if (ret)
+ return ret;
+
+ ret = snd_soc_dapm_add_routes(dapm, neo1973_lm4857_routes,
+ ARRAY_SIZE(neo1973_lm4857_routes));
+ if (ret)
+ return ret;
+
+ snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
+ snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
+ snd_soc_dapm_ignore_suspend(dapm, "Headphone");
+
+ snd_soc_dapm_sync(dapm);
+
+ return 0;
+}
+
/*
* BT Codec DAI
*/
},
};
-static struct snd_soc_card neo1973 = {
- .name = "neo1973",
- .dai_link = neo1973_dai,
- .num_links = ARRAY_SIZE(neo1973_dai),
+static struct snd_soc_aux_dev neo1973_aux_devs[] = {
+ {
+ .name = "lm4857",
+ .codec_name = "lm4857.0-007c",
+ .init = neo1973_lm4857_init,
+ },
};
-static int lm4857_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- pr_debug("Entered %s\n", __func__);
-
- i2c = client;
-
- lm4857_write_regs();
- return 0;
-}
-
-static int lm4857_i2c_remove(struct i2c_client *client)
-{
- pr_debug("Entered %s\n", __func__);
-
- i2c = NULL;
-
- return 0;
-}
-
-static u8 lm4857_state;
-
-static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
-{
- pr_debug("Entered %s\n", __func__);
-
- dev_dbg(&dev->dev, "lm4857_suspend\n");
- lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
- if (lm4857_state) {
- lm4857_regs[LM4857_CTRL] &= 0xf0;
- lm4857_write_regs();
- }
- return 0;
-}
-
-static int lm4857_resume(struct i2c_client *dev)
-{
- pr_debug("Entered %s\n", __func__);
-
- if (lm4857_state) {
- lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
- lm4857_write_regs();
- }
- return 0;
-}
-
-static void lm4857_shutdown(struct i2c_client *dev)
-{
- pr_debug("Entered %s\n", __func__);
-
- dev_dbg(&dev->dev, "lm4857_shutdown\n");
- lm4857_regs[LM4857_CTRL] &= 0xf0;
- lm4857_write_regs();
-}
-
-static const struct i2c_device_id lm4857_i2c_id[] = {
- { "neo1973_lm4857", 0 },
- { }
+static struct snd_soc_codec_conf neo1973_codec_conf[] = {
+ {
+ .dev_name = "lm4857.0-007c",
+ .name_prefix = "Amp",
+ },
};
-static struct i2c_driver lm4857_i2c_driver = {
- .driver = {
- .name = "LM4857 I2C Amp",
- .owner = THIS_MODULE,
- },
- .suspend = lm4857_suspend,
- .resume = lm4857_resume,
- .shutdown = lm4857_shutdown,
- .probe = lm4857_i2c_probe,
- .remove = lm4857_i2c_remove,
- .id_table = lm4857_i2c_id,
+static struct snd_soc_card neo1973 = {
+ .name = "neo1973",
+ .dai_link = neo1973_dai,
+ .num_links = ARRAY_SIZE(neo1973_dai),
+ .aux_dev = neo1973_aux_devs,
+ .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
+ .codec_conf = neo1973_codec_conf,
+ .num_configs = ARRAY_SIZE(neo1973_codec_conf),
};
static struct platform_device *neo1973_snd_device;
return ret;
}
- ret = i2c_add_driver(&lm4857_i2c_driver);
-
if (ret != 0)
platform_device_unregister(neo1973_snd_device);
{
pr_debug("Entered %s\n", __func__);
- i2c_del_driver(&lm4857_i2c_driver);
platform_device_unregister(neo1973_snd_device);
}
projects / kernel / kernel-generic.git / commitdiff