MFD: twl4030: add twl4030_codec MFD as a new child to the core

New MFD child to twl4030 MFD device.

Reason for the twl4030_codec MFD: the vibra control is actually in the codec
part of the twl4030. If both the vibra and the audio functionality is needed
from the twl4030 at the same time, than they need to control the codec power
and APLL at the same time without breaking the other driver.
Also these two has to be able to work without the need for the other driver.

This MFD device will be used by the drivers, which needs resources
from the twl4030 codec like audio and vibra.

The platform specific configuration data is passed along to the
child drivers (audio, vibra).

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

6 files changed, 551 insertions, 0 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 570be139f9df..08f2d07bf56a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -121,6 +121,12 @@ config TWL4030_POWER
           and load scripts controling which resources are switched off/on
           or reset when a sleep, wakeup or warm reset event occurs.
 
+config TWL4030_CODEC
+        bool
+        depends on TWL4030_CORE
+        select MFD_CORE
+        default n
+
 config MFD_TMIO
         bool
         default n
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f3b277b90d40..af0fc903cec8 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_MENELAUS)		+= menelaus.o
 
 obj-$(CONFIG_TWL4030_CORE)      += twl4030-core.o twl4030-irq.o
 obj-$(CONFIG_TWL4030_POWER)    += twl4030-power.o
+obj-$(CONFIG_TWL4030_CODEC)     += twl4030-codec.o
 
 obj-$(CONFIG_MFD_MC13783)       += mc13783-core.o
 
diff --git a/drivers/mfd/twl4030-codec.c b/drivers/mfd/twl4030-codec.c
new file mode 100644
index 000000000000..97103078dc2a
--- /dev/null
+++ b/drivers/mfd/twl4030-codec.c
@@ -0,0 +1,241 @@
+/*
+ * MFD driver for twl4030 codec submodule
+ *
+ * Author:      Peter Ujfalusi <peter.ujfalusi@nokia.com>
+ *
+ * Copyright:   (C) 2009 Nokia Corporation
+ *
+ * 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/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/twl4030.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/twl4030-codec.h>
+
+#define TWL4030_CODEC_CELLS     2
+
+static struct platform_device *twl4030_codec_dev;
+
+struct twl4030_codec_resource {
+        int request_count;
+        u8 reg;
+        u8 mask;
+};
+
+struct twl4030_codec {
+        struct mutex mutex;
+        struct twl4030_codec_resource resource[TWL4030_CODEC_RES_MAX];
+        struct mfd_cell cells[TWL4030_CODEC_CELLS];
+};
+
+/*
+ * Modify the resource, the function returns the content of the register
+ * after the modification.
+ */
+static int twl4030_codec_set_resource(enum twl4030_codec_res id, int enable)
+{
+        struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+        u8 val;
+
+        twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val,
+                        codec->resource[id].reg);
+
+        if (enable)
+                val |= codec->resource[id].mask;
+        else
+                val &= ~codec->resource[id].mask;
+
+        twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+                                        val, codec->resource[id].reg);
+
+        return val;
+}
+
+static inline int twl4030_codec_get_resource(enum twl4030_codec_res id)
+{
+        struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+        u8 val;
+
+        twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val,
+                        codec->resource[id].reg);
+
+        return val;
+}
+
+/*
+ * Enable the resource.
+ * The function returns with error or the content of the register
+ */
+int twl4030_codec_enable_resource(enum twl4030_codec_res id)
+{
+        struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+        int val;
+
+        if (id >= TWL4030_CODEC_RES_MAX) {
+                dev_err(&twl4030_codec_dev->dev,
+                                "Invalid resource ID (%u)\n", id);
+                return -EINVAL;
+        }
+
+        mutex_lock(&codec->mutex);
+        if (!codec->resource[id].request_count)
+                /* Resource was disabled, enable it */
+                val = twl4030_codec_set_resource(id, 1);
+        else
+                val = twl4030_codec_get_resource(id);
+
+        codec->resource[id].request_count++;
+        mutex_unlock(&codec->mutex);
+
+        return val;
+}
+EXPORT_SYMBOL_GPL(twl4030_codec_enable_resource);
+
+/*
+ * Disable the resource.
+ * The function returns with error or the content of the register
+ */
+int twl4030_codec_disable_resource(unsigned id)
+{
+        struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+        int val;
+
+        if (id >= TWL4030_CODEC_RES_MAX) {
+                dev_err(&twl4030_codec_dev->dev,
+                                "Invalid resource ID (%u)\n", id);
+                return -EINVAL;
+        }
+
+        mutex_lock(&codec->mutex);
+        if (!codec->resource[id].request_count) {
+                dev_err(&twl4030_codec_dev->dev,
+                        "Resource has been disabled already (%u)\n", id);
+                mutex_unlock(&codec->mutex);
+                return -EPERM;
+        }
+        codec->resource[id].request_count--;
+
+        if (!codec->resource[id].request_count)
+                /* Resource can be disabled now */
+                val = twl4030_codec_set_resource(id, 0);
+        else
+                val = twl4030_codec_get_resource(id);
+
+        mutex_unlock(&codec->mutex);
+
+        return val;
+}
+EXPORT_SYMBOL_GPL(twl4030_codec_disable_resource);
+
+static int __devinit twl4030_codec_probe(struct platform_device *pdev)
+{
+        struct twl4030_codec *codec;
+        struct twl4030_codec_data *pdata = pdev->dev.platform_data;
+        struct mfd_cell *cell = NULL;
+        int ret, childs = 0;
+
+        codec = kzalloc(sizeof(struct twl4030_codec), GFP_KERNEL);
+        if (!codec)
+                return -ENOMEM;
+
+        platform_set_drvdata(pdev, codec);
+
+        twl4030_codec_dev = pdev;
+        mutex_init(&codec->mutex);
+
+        /* Codec power */
+        codec->resource[TWL4030_CODEC_RES_POWER].reg = TWL4030_REG_CODEC_MODE;
+        codec->resource[TWL4030_CODEC_RES_POWER].mask = TWL4030_CODECPDZ;
+
+        /* PLL */
+        codec->resource[TWL4030_CODEC_RES_APLL].reg = TWL4030_REG_APLL_CTL;
+        codec->resource[TWL4030_CODEC_RES_APLL].mask = TWL4030_APLL_EN;
+
+        if (pdata->audio) {
+                cell = &codec->cells[childs];
+                cell->name = "twl4030_codec_audio";
+                cell->platform_data = pdata->audio;
+                cell->data_size = sizeof(*pdata->audio);
+                childs++;
+        }
+        if (pdata->vibra) {
+                cell = &codec->cells[childs];
+                cell->name = "twl4030_codec_vibra";
+                cell->platform_data = pdata->vibra;
+                cell->data_size = sizeof(*pdata->vibra);
+                childs++;
+        }
+
+        if (childs)
+                ret = mfd_add_devices(&pdev->dev, pdev->id, codec->cells,
+                                      childs, NULL, 0);
+        else {
+                dev_err(&pdev->dev, "No platform data found for childs\n");
+                ret = -ENODEV;
+        }
+
+        if (!ret)
+                return 0;
+
+        platform_set_drvdata(pdev, NULL);
+        kfree(codec);
+        twl4030_codec_dev = NULL;
+        return ret;
+}
+
+static int __devexit twl4030_codec_remove(struct platform_device *pdev)
+{
+        struct twl4030_codec *codec = platform_get_drvdata(pdev);
+
+        mfd_remove_devices(&pdev->dev);
+        platform_set_drvdata(pdev, NULL);
+        kfree(codec);
+        twl4030_codec_dev = NULL;
+
+        return 0;
+}
+
+MODULE_ALIAS("platform:twl4030_codec");
+
+static struct platform_driver twl4030_codec_driver = {
+        .probe          = twl4030_codec_probe,
+        .remove         = __devexit_p(twl4030_codec_remove),
+        .driver         = {
+                .owner  = THIS_MODULE,
+                .name   = "twl4030_codec",
+        },
+};
+
+static int __devinit twl4030_codec_init(void)
+{
+        return platform_driver_register(&twl4030_codec_driver);
+}
+module_init(twl4030_codec_init);
+
+static void __devexit twl4030_codec_exit(void)
+{
+        platform_driver_unregister(&twl4030_codec_driver);
+}
+module_exit(twl4030_codec_exit);
+
+MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@nokia.com>");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index 6cb12502e306..cf462b90dee2 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -114,6 +114,12 @@
 #define twl_has_watchdog()        false
 #endif
 
+#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE)
+#define twl_has_codec() true
+#else
+#define twl_has_codec() false
+#endif
+
 /* Triton Core internal information (BEGIN) */
 
 /* Last - for index max*/
@@ -601,6 +607,14 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features)
                         return PTR_ERR(child);
         }
 
+        if (twl_has_codec() && pdata->codec) {
+                child = add_child(1, "twl4030_codec",
+                                pdata->codec, sizeof(*pdata->codec),
+                                false, 0, 0);
+                if (IS_ERR(child))
+                        return PTR_ERR(child);
+        }
+
         if (twl_has_regulator()) {
                 /*
                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1);
diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h
index 508824ee35e6..ba61add3e05a 100644
--- a/include/linux/i2c/twl4030.h
+++ b/include/linux/i2c/twl4030.h
@@ -401,6 +401,23 @@ struct twl4030_power_data {
 
 extern void twl4030_power_init(struct twl4030_power_data *triton2_scripts);
 
+struct twl4030_codec_audio_data {
+        unsigned int    audio_mclk;
+        unsigned int ramp_delay_value;
+        unsigned int hs_extmute:1;
+        void (*set_hs_extmute)(int mute);
+};
+
+struct twl4030_codec_vibra_data {
+        unsigned int    audio_mclk;
+        unsigned int    coexist;
+};
+
+struct twl4030_codec_data {
+        struct twl4030_codec_audio_data         *audio;
+        struct twl4030_codec_vibra_data         *vibra;
+};
+
 struct twl4030_platform_data {
         unsigned                                irq_base, irq_end;
         struct twl4030_bci_platform_data        *bci;
@@ -409,6 +426,7 @@ struct twl4030_platform_data {
         struct twl4030_keypad_data              *keypad;
         struct twl4030_usb_data                 *usb;
         struct twl4030_power_data               *power;
+        struct twl4030_codec_data               *codec;
 
         /* LDO regulators */
         struct regulator_init_data              *vdac;
diff --git a/include/linux/mfd/twl4030-codec.h b/include/linux/mfd/twl4030-codec.h
new file mode 100644
index 000000000000..ef0a3041d759
--- /dev/null
+++ b/include/linux/mfd/twl4030-codec.h
@@ -0,0 +1,271 @@
+/*
+ * MFD driver for twl4030 codec submodule
+ *
+ * Author:      Peter Ujfalusi <peter.ujfalusi@nokia.com>
+ *
+ * Copyright:   (C) 2009 Nokia Corporation
+ *
+ * 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
+ *
+ */
+
+#ifndef __TWL4030_CODEC_H__
+#define __TWL4030_CODEC_H__
+
+/* Codec registers */
+#define TWL4030_REG_CODEC_MODE          0x01
+#define TWL4030_REG_OPTION              0x02
+#define TWL4030_REG_UNKNOWN             0x03
+#define TWL4030_REG_MICBIAS_CTL         0x04
+#define TWL4030_REG_ANAMICL             0x05
+#define TWL4030_REG_ANAMICR             0x06
+#define TWL4030_REG_AVADC_CTL           0x07
+#define TWL4030_REG_ADCMICSEL           0x08
+#define TWL4030_REG_DIGMIXING           0x09
+#define TWL4030_REG_ATXL1PGA            0x0A
+#define TWL4030_REG_ATXR1PGA            0x0B
+#define TWL4030_REG_AVTXL2PGA           0x0C
+#define TWL4030_REG_AVTXR2PGA           0x0D
+#define TWL4030_REG_AUDIO_IF            0x0E
+#define TWL4030_REG_VOICE_IF            0x0F
+#define TWL4030_REG_ARXR1PGA            0x10
+#define TWL4030_REG_ARXL1PGA            0x11
+#define TWL4030_REG_ARXR2PGA            0x12
+#define TWL4030_REG_ARXL2PGA            0x13
+#define TWL4030_REG_VRXPGA              0x14
+#define TWL4030_REG_VSTPGA              0x15
+#define TWL4030_REG_VRX2ARXPGA          0x16
+#define TWL4030_REG_AVDAC_CTL           0x17
+#define TWL4030_REG_ARX2VTXPGA          0x18
+#define TWL4030_REG_ARXL1_APGA_CTL      0x19
+#define TWL4030_REG_ARXR1_APGA_CTL      0x1A
+#define TWL4030_REG_ARXL2_APGA_CTL      0x1B
+#define TWL4030_REG_ARXR2_APGA_CTL      0x1C
+#define TWL4030_REG_ATX2ARXPGA          0x1D
+#define TWL4030_REG_BT_IF               0x1E
+#define TWL4030_REG_BTPGA               0x1F
+#define TWL4030_REG_BTSTPGA             0x20
+#define TWL4030_REG_EAR_CTL             0x21
+#define TWL4030_REG_HS_SEL              0x22
+#define TWL4030_REG_HS_GAIN_SET         0x23
+#define TWL4030_REG_HS_POPN_SET         0x24
+#define TWL4030_REG_PREDL_CTL           0x25
+#define TWL4030_REG_PREDR_CTL           0x26
+#define TWL4030_REG_PRECKL_CTL          0x27
+#define TWL4030_REG_PRECKR_CTL          0x28
+#define TWL4030_REG_HFL_CTL             0x29
+#define TWL4030_REG_HFR_CTL             0x2A
+#define TWL4030_REG_ALC_CTL             0x2B
+#define TWL4030_REG_ALC_SET1            0x2C
+#define TWL4030_REG_ALC_SET2            0x2D
+#define TWL4030_REG_BOOST_CTL           0x2E
+#define TWL4030_REG_SOFTVOL_CTL         0x2F
+#define TWL4030_REG_DTMF_FREQSEL        0x30
+#define TWL4030_REG_DTMF_TONEXT1H       0x31
+#define TWL4030_REG_DTMF_TONEXT1L       0x32
+#define TWL4030_REG_DTMF_TONEXT2H       0x33
+#define TWL4030_REG_DTMF_TONEXT2L       0x34
+#define TWL4030_REG_DTMF_TONOFF         0x35
+#define TWL4030_REG_DTMF_WANONOFF       0x36
+#define TWL4030_REG_I2S_RX_SCRAMBLE_H   0x37
+#define TWL4030_REG_I2S_RX_SCRAMBLE_M   0x38
+#define TWL4030_REG_I2S_RX_SCRAMBLE_L   0x39
+#define TWL4030_REG_APLL_CTL            0x3A
+#define TWL4030_REG_DTMF_CTL            0x3B
+#define TWL4030_REG_DTMF_PGA_CTL2       0x3C
+#define TWL4030_REG_DTMF_PGA_CTL1       0x3D
+#define TWL4030_REG_MISC_SET_1          0x3E
+#define TWL4030_REG_PCMBTMUX            0x3F
+#define TWL4030_REG_RX_PATH_SEL         0x43
+#define TWL4030_REG_VDL_APGA_CTL        0x44
+#define TWL4030_REG_VIBRA_CTL           0x45
+#define TWL4030_REG_VIBRA_SET           0x46
+#define TWL4030_REG_VIBRA_PWM_SET       0x47
+#define TWL4030_REG_ANAMIC_GAIN         0x48
+#define TWL4030_REG_MISC_SET_2          0x49
+
+/* Bitfield Definitions */
+
+/* TWL4030_CODEC_MODE (0x01) Fields */
+#define TWL4030_APLL_RATE               0xF0
+#define TWL4030_APLL_RATE_8000          0x00
+#define TWL4030_APLL_RATE_11025         0x10
+#define TWL4030_APLL_RATE_12000         0x20
+#define TWL4030_APLL_RATE_16000         0x40
+#define TWL4030_APLL_RATE_22050         0x50
+#define TWL4030_APLL_RATE_24000         0x60
+#define TWL4030_APLL_RATE_32000         0x80
+#define TWL4030_APLL_RATE_44100         0x90
+#define TWL4030_APLL_RATE_48000         0xA0
+#define TWL4030_APLL_RATE_96000         0xE0
+#define TWL4030_SEL_16K                 0x08
+#define TWL4030_CODECPDZ                0x02
+#define TWL4030_OPT_MODE                0x01
+#define TWL4030_OPTION_1                (1 << 0)
+#define TWL4030_OPTION_2                (0 << 0)
+
+/* TWL4030_OPTION (0x02) Fields */
+#define TWL4030_ATXL1_EN                (1 << 0)
+#define TWL4030_ATXR1_EN                (1 << 1)
+#define TWL4030_ATXL2_VTXL_EN           (1 << 2)
+#define TWL4030_ATXR2_VTXR_EN           (1 << 3)
+#define TWL4030_ARXL1_VRX_EN            (1 << 4)
+#define TWL4030_ARXR1_EN                (1 << 5)
+#define TWL4030_ARXL2_EN                (1 << 6)
+#define TWL4030_ARXR2_EN                (1 << 7)
+
+/* TWL4030_REG_MICBIAS_CTL (0x04) Fields */
+#define TWL4030_MICBIAS2_CTL            0x40
+#define TWL4030_MICBIAS1_CTL            0x20
+#define TWL4030_HSMICBIAS_EN            0x04
+#define TWL4030_MICBIAS2_EN             0x02
+#define TWL4030_MICBIAS1_EN             0x01
+
+/* ANAMICL (0x05) Fields */
+#define TWL4030_CNCL_OFFSET_START       0x80
+#define TWL4030_OFFSET_CNCL_SEL         0x60
+#define TWL4030_OFFSET_CNCL_SEL_ARX1    0x00
+#define TWL4030_OFFSET_CNCL_SEL_ARX2    0x20
+#define TWL4030_OFFSET_CNCL_SEL_VRX     0x40
+#define TWL4030_OFFSET_CNCL_SEL_ALL     0x60
+#define TWL4030_MICAMPL_EN              0x10
+#define TWL4030_CKMIC_EN                0x08
+#define TWL4030_AUXL_EN                 0x04
+#define TWL4030_HSMIC_EN                0x02
+#define TWL4030_MAINMIC_EN              0x01
+
+/* ANAMICR (0x06) Fields */
+#define TWL4030_MICAMPR_EN              0x10
+#define TWL4030_AUXR_EN                 0x04
+#define TWL4030_SUBMIC_EN               0x01
+
+/* AVADC_CTL (0x07) Fields */
+#define TWL4030_ADCL_EN                 0x08
+#define TWL4030_AVADC_CLK_PRIORITY      0x04
+#define TWL4030_ADCR_EN                 0x02
+
+/* TWL4030_REG_ADCMICSEL (0x08) Fields */
+#define TWL4030_DIGMIC1_EN              0x08
+#define TWL4030_TX2IN_SEL               0x04
+#define TWL4030_DIGMIC0_EN              0x02
+#define TWL4030_TX1IN_SEL               0x01
+
+/* AUDIO_IF (0x0E) Fields */
+#define TWL4030_AIF_SLAVE_EN            0x80
+#define TWL4030_DATA_WIDTH              0x60
+#define TWL4030_DATA_WIDTH_16S_16W      0x00
+#define TWL4030_DATA_WIDTH_32S_16W      0x40
+#define TWL4030_DATA_WIDTH_32S_24W      0x60
+#define TWL4030_AIF_FORMAT              0x18
+#define TWL4030_AIF_FORMAT_CODEC        0x00
+#define TWL4030_AIF_FORMAT_LEFT         0x08
+#define TWL4030_AIF_FORMAT_RIGHT        0x10
+#define TWL4030_AIF_FORMAT_TDM          0x18
+#define TWL4030_AIF_TRI_EN              0x04
+#define TWL4030_CLK256FS_EN             0x02
+#define TWL4030_AIF_EN                  0x01
+
+/* VOICE_IF (0x0F) Fields */
+#define TWL4030_VIF_SLAVE_EN            0x80
+#define TWL4030_VIF_DIN_EN              0x40
+#define TWL4030_VIF_DOUT_EN             0x20
+#define TWL4030_VIF_SWAP                0x10
+#define TWL4030_VIF_FORMAT              0x08
+#define TWL4030_VIF_TRI_EN              0x04
+#define TWL4030_VIF_SUB_EN              0x02
+#define TWL4030_VIF_EN                  0x01
+
+/* EAR_CTL (0x21) */
+#define TWL4030_EAR_GAIN                0x30
+
+/* HS_GAIN_SET (0x23) Fields */
+#define TWL4030_HSR_GAIN                0x0C
+#define TWL4030_HSR_GAIN_PWR_DOWN       0x00
+#define TWL4030_HSR_GAIN_PLUS_6DB       0x04
+#define TWL4030_HSR_GAIN_0DB            0x08
+#define TWL4030_HSR_GAIN_MINUS_6DB      0x0C
+#define TWL4030_HSL_GAIN                0x03
+#define TWL4030_HSL_GAIN_PWR_DOWN       0x00
+#define TWL4030_HSL_GAIN_PLUS_6DB       0x01
+#define TWL4030_HSL_GAIN_0DB            0x02
+#define TWL4030_HSL_GAIN_MINUS_6DB      0x03
+
+/* HS_POPN_SET (0x24) Fields */
+#define TWL4030_VMID_EN                 0x40
+#define TWL4030_EXTMUTE                 0x20
+#define TWL4030_RAMP_DELAY              0x1C
+#define TWL4030_RAMP_DELAY_20MS         0x00
+#define TWL4030_RAMP_DELAY_40MS         0x04
+#define TWL4030_RAMP_DELAY_81MS         0x08
+#define TWL4030_RAMP_DELAY_161MS        0x0C
+#define TWL4030_RAMP_DELAY_323MS        0x10
+#define TWL4030_RAMP_DELAY_645MS        0x14
+#define TWL4030_RAMP_DELAY_1291MS       0x18
+#define TWL4030_RAMP_DELAY_2581MS       0x1C
+#define TWL4030_RAMP_EN                 0x02
+
+/* PREDL_CTL (0x25) */
+#define TWL4030_PREDL_GAIN              0x30
+
+/* PREDR_CTL (0x26) */
+#define TWL4030_PREDR_GAIN              0x30
+
+/* PRECKL_CTL (0x27) */
+#define TWL4030_PRECKL_GAIN             0x30
+
+/* PRECKR_CTL (0x28) */
+#define TWL4030_PRECKR_GAIN             0x30
+
+/* HFL_CTL (0x29, 0x2A) Fields */
+#define TWL4030_HF_CTL_HB_EN            0x04
+#define TWL4030_HF_CTL_LOOP_EN          0x08
+#define TWL4030_HF_CTL_RAMP_EN          0x10
+#define TWL4030_HF_CTL_REF_EN           0x20
+
+/* APLL_CTL (0x3A) Fields */
+#define TWL4030_APLL_EN                 0x10
+#define TWL4030_APLL_INFREQ             0x0F
+#define TWL4030_APLL_INFREQ_19200KHZ    0x05
+#define TWL4030_APLL_INFREQ_26000KHZ    0x06
+#define TWL4030_APLL_INFREQ_38400KHZ    0x0F
+
+/* REG_MISC_SET_1 (0x3E) Fields */
+#define TWL4030_CLK64_EN                0x80
+#define TWL4030_SCRAMBLE_EN             0x40
+#define TWL4030_FMLOOP_EN               0x20
+#define TWL4030_SMOOTH_ANAVOL_EN        0x02
+#define TWL4030_DIGMIC_LR_SWAP_EN       0x01
+
+/* VIBRA_CTL (0x45) */
+#define TWL4030_VIBRA_EN                0x01
+#define TWL4030_VIBRA_DIR               0x02
+#define TWL4030_VIBRA_AUDIO_SEL_L1      (0x00 << 2)
+#define TWL4030_VIBRA_AUDIO_SEL_R1      (0x01 << 2)
+#define TWL4030_VIBRA_AUDIO_SEL_L2      (0x02 << 2)
+#define TWL4030_VIBRA_AUDIO_SEL_R2      (0x03 << 2)
+#define TWL4030_VIBRA_SEL               0x10
+#define TWL4030_VIBRA_DIR_SEL           0x20
+
+/* TWL4030 codec resource IDs */
+enum twl4030_codec_res {
+        TWL4030_CODEC_RES_POWER = 0,
+        TWL4030_CODEC_RES_APLL,
+        TWL4030_CODEC_RES_MAX,
+};
+
+int twl4030_codec_disable_resource(enum twl4030_codec_res id);
+int twl4030_codec_enable_resource(enum twl4030_codec_res id);
+
+#endif  /* End of __TWL4030_CODEC_H__ */