/* * ALSA SoC TWL6040 codec driver * * Author: Misael Lopez Cruz * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "twl6040.h" #define TWL6040_RATES SNDRV_PCM_RATE_8000_96000 #define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE) #define TWL6040_OUTHS_0dB 0x00 #define TWL6040_OUTHS_M30dB 0x0F #define TWL6040_OUTHF_0dB 0x03 #define TWL6040_OUTHF_M52dB 0x1D #define TWL6040_RAMP_NONE 0 #define TWL6040_RAMP_UP 1 #define TWL6040_RAMP_DOWN 2 #define TWL6040_HSL_VOL_MASK 0x0F #define TWL6040_HSL_VOL_SHIFT 0 #define TWL6040_HSR_VOL_MASK 0xF0 #define TWL6040_HSR_VOL_SHIFT 4 #define TWL6040_HF_VOL_MASK 0x1F #define TWL6040_HF_VOL_SHIFT 0 /* Shadow register used by the driver */ #define TWL6040_REG_SW_SHADOW 0x2F #define TWL6040_CACHEREGNUM (TWL6040_REG_SW_SHADOW + 1) /* TWL6040_REG_SW_SHADOW (0x2F) fields */ #define TWL6040_EAR_PATH_ENABLE 0x01 struct twl6040_output { u16 active; u16 left_vol; u16 right_vol; u16 left_step; u16 right_step; unsigned int step_delay; u16 ramp; struct delayed_work work; struct completion ramp_done; }; struct twl6040_jack_data { struct snd_soc_jack *jack; struct delayed_work work; int report; }; /* codec private data */ struct twl6040_data { int plug_irq; int codec_powered; int pll; int non_lp; int pll_power_mode; int hs_power_mode; int hs_power_mode_locked; unsigned int clk_in; unsigned int sysclk; u16 hs_left_step; u16 hs_right_step; u16 hf_left_step; u16 hf_right_step; struct twl6040_jack_data hs_jack; struct snd_soc_codec *codec; struct workqueue_struct *workqueue; struct mutex mutex; struct twl6040_output headset; struct twl6040_output handsfree; }; /* * twl6040 register cache & default register settings */ static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = { 0x00, /* not used 0x00 */ 0x4B, /* REG_ASICID 0x01 (ro) */ 0x00, /* REG_ASICREV 0x02 (ro) */ 0x00, /* REG_INTID 0x03 */ 0x00, /* REG_INTMR 0x04 */ 0x00, /* REG_NCPCTRL 0x05 */ 0x00, /* REG_LDOCTL 0x06 */ 0x60, /* REG_HPPLLCTL 0x07 */ 0x00, /* REG_LPPLLCTL 0x08 */ 0x4A, /* REG_LPPLLDIV 0x09 */ 0x00, /* REG_AMICBCTL 0x0A */ 0x00, /* REG_DMICBCTL 0x0B */ 0x00, /* REG_MICLCTL 0x0C */ 0x00, /* REG_MICRCTL 0x0D */ 0x00, /* REG_MICGAIN 0x0E */ 0x1B, /* REG_LINEGAIN 0x0F */ 0x00, /* REG_HSLCTL 0x10 */ 0x00, /* REG_HSRCTL 0x11 */ 0x00, /* REG_HSGAIN 0x12 */ 0x00, /* REG_EARCTL 0x13 */ 0x00, /* REG_HFLCTL 0x14 */ 0x00, /* REG_HFLGAIN 0x15 */ 0x00, /* REG_HFRCTL 0x16 */ 0x00, /* REG_HFRGAIN 0x17 */ 0x00, /* REG_VIBCTLL 0x18 */ 0x00, /* REG_VIBDATL 0x19 */ 0x00, /* REG_VIBCTLR 0x1A */ 0x00, /* REG_VIBDATR 0x1B */ 0x00, /* REG_HKCTL1 0x1C */ 0x00, /* REG_HKCTL2 0x1D */ 0x00, /* REG_GPOCTL 0x1E */ 0x00, /* REG_ALB 0x1F */ 0x00, /* REG_DLB 0x20 */ 0x00, /* not used 0x21 */ 0x00, /* not used 0x22 */ 0x00, /* not used 0x23 */ 0x00, /* not used 0x24 */ 0x00, /* not used 0x25 */ 0x00, /* not used 0x26 */ 0x00, /* not used 0x27 */ 0x00, /* REG_TRIM1 0x28 */ 0x00, /* REG_TRIM2 0x29 */ 0x00, /* REG_TRIM3 0x2A */ 0x00, /* REG_HSOTRIM 0x2B */ 0x00, /* REG_HFOTRIM 0x2C */ 0x09, /* REG_ACCCTL 0x2D */ 0x00, /* REG_STATUS 0x2E (ro) */ 0x00, /* REG_SW_SHADOW 0x2F - Shadow, non HW register */ }; /* List of registers to be restored after power up */ static const int twl6040_restore_list[] = { TWL6040_REG_MICLCTL, TWL6040_REG_MICRCTL, TWL6040_REG_MICGAIN, TWL6040_REG_LINEGAIN, TWL6040_REG_HSLCTL, TWL6040_REG_HSRCTL, TWL6040_REG_HSGAIN, TWL6040_REG_EARCTL, TWL6040_REG_HFLCTL, TWL6040_REG_HFLGAIN, TWL6040_REG_HFRCTL, TWL6040_REG_HFRGAIN, }; /* set of rates for each pll: low-power and high-performance */ static unsigned int lp_rates[] = { 8000, 11250, 16000, 22500, 32000, 44100, 48000, 88200, 96000, }; static unsigned int hp_rates[] = { 8000, 16000, 32000, 48000, 96000, }; static struct snd_pcm_hw_constraint_list sysclk_constraints[] = { { .count = ARRAY_SIZE(lp_rates), .list = lp_rates, }, { .count = ARRAY_SIZE(hp_rates), .list = hp_rates, }, }; /* * read twl6040 register cache */ static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec, unsigned int reg) { u8 *cache = codec->reg_cache; if (reg >= TWL6040_CACHEREGNUM) return -EIO; return cache[reg]; } /* * write twl6040 register cache */ static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec, u8 reg, u8 value) { u8 *cache = codec->reg_cache; if (reg >= TWL6040_CACHEREGNUM) return; cache[reg] = value; } /* * read from twl6040 hardware register */ static int twl6040_read_reg_volatile(struct snd_soc_codec *codec, unsigned int reg) { struct twl6040 *twl6040 = codec->control_data; u8 value; if (reg >= TWL6040_CACHEREGNUM) return -EIO; if (likely(reg < TWL6040_REG_SW_SHADOW)) { value = twl6040_reg_read(twl6040, reg); twl6040_write_reg_cache(codec, reg, value); } else { value = twl6040_read_reg_cache(codec, reg); } return value; } /* * write to the twl6040 register space */ static int twl6040_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int value) { struct twl6040 *twl6040 = codec->control_data; if (reg >= TWL6040_CACHEREGNUM) return -EIO; twl6040_write_reg_cache(codec, reg, value); if (likely(reg < TWL6040_REG_SW_SHADOW)) return twl6040_reg_write(twl6040, reg, value); else return 0; } static void twl6040_init_chip(struct snd_soc_codec *codec) { struct twl6040 *twl6040 = codec->control_data; u8 val; /* Update reg_cache: ASICREV, and TRIM values */ val = twl6040_get_revid(twl6040); twl6040_write_reg_cache(codec, TWL6040_REG_ASICREV, val); twl6040_read_reg_volatile(codec, TWL6040_REG_TRIM1); twl6040_read_reg_volatile(codec, TWL6040_REG_TRIM2); twl6040_read_reg_volatile(codec, TWL6040_REG_TRIM3); twl6040_read_reg_volatile(codec, TWL6040_REG_HSOTRIM); twl6040_read_reg_volatile(codec, TWL6040_REG_HFOTRIM); /* Change chip defaults */ /* No imput selected for microphone amplifiers */ twl6040_write_reg_cache(codec, TWL6040_REG_MICLCTL, 0x18); twl6040_write_reg_cache(codec, TWL6040_REG_MICRCTL, 0x18); /* * We need to lower the default gain values, so the ramp code * can work correctly for the first playback. * This reduces the pop noise heard at the first playback. */ twl6040_write_reg_cache(codec, TWL6040_REG_HSGAIN, 0xff); twl6040_write_reg_cache(codec, TWL6040_REG_EARCTL, 0x1e); twl6040_write_reg_cache(codec, TWL6040_REG_HFLGAIN, 0x1d); twl6040_write_reg_cache(codec, TWL6040_REG_HFRGAIN, 0x1d); twl6040_write_reg_cache(codec, TWL6040_REG_LINEGAIN, 0); } static void twl6040_restore_regs(struct snd_soc_codec *codec) { u8 *cache = codec->reg_cache; int reg, i; for (i = 0; i < ARRAY_SIZE(twl6040_restore_list); i++) { reg = twl6040_restore_list[i]; twl6040_write(codec, reg, cache[reg]); } } /* * Ramp HS PGA volume to minimise pops at stream startup and shutdown. */ static inline int twl6040_hs_ramp_step(struct snd_soc_codec *codec, unsigned int left_step, unsigned int right_step) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); struct twl6040_output *headset = &priv->headset; int left_complete = 0, right_complete = 0; u8 reg, val; /* left channel */ left_step = (left_step > 0xF) ? 0xF : left_step; reg = twl6040_read_reg_cache(codec, TWL6040_REG_HSGAIN); val = (~reg & TWL6040_HSL_VOL_MASK); if (headset->ramp == TWL6040_RAMP_UP) { /* ramp step up */ if (val < headset->left_vol) { if (val + left_step > headset->left_vol) val = headset->left_vol; else val += left_step; reg &= ~TWL6040_HSL_VOL_MASK; twl6040_write(codec, TWL6040_REG_HSGAIN, (reg | (~val & TWL6040_HSL_VOL_MASK))); } else { left_complete = 1; } } else if (headset->ramp == TWL6040_RAMP_DOWN) { /* ramp step down */ if (val > 0x0) { if ((int)val - (int)left_step < 0) val = 0; else val -= left_step; reg &= ~TWL6040_HSL_VOL_MASK; twl6040_write(codec, TWL6040_REG_HSGAIN, reg | (~val & TWL6040_HSL_VOL_MASK)); } else { left_complete = 1; } } /* right channel */ right_step = (right_step > 0xF) ? 0xF : right_step; reg = twl6040_read_reg_cache(codec, TWL6040_REG_HSGAIN); val = (~reg & TWL6040_HSR_VOL_MASK) >> TWL6040_HSR_VOL_SHIFT; if (headset->ramp == TWL6040_RAMP_UP) { /* ramp step up */ if (val < headset->right_vol) { if (val + right_step > headset->right_vol) val = headset->right_vol; else val += right_step; reg &= ~TWL6040_HSR_VOL_MASK; twl6040_write(codec, TWL6040_REG_HSGAIN, (reg | (~val << TWL6040_HSR_VOL_SHIFT))); } else { right_complete = 1; } } else if (headset->ramp == TWL6040_RAMP_DOWN) { /* ramp step down */ if (val > 0x0) { if ((int)val - (int)right_step < 0) val = 0; else val -= right_step; reg &= ~TWL6040_HSR_VOL_MASK; twl6040_write(codec, TWL6040_REG_HSGAIN, reg | (~val << TWL6040_HSR_VOL_SHIFT)); } else { right_complete = 1; } } return left_complete & right_complete; } /* * Ramp HF PGA volume to minimise pops at stream startup and shutdown. */ static inline int twl6040_hf_ramp_step(struct snd_soc_codec *codec, unsigned int left_step, unsigned int right_step) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); struct twl6040_output *handsfree = &priv->handsfree; int left_complete = 0, right_complete = 0; u16 reg, val; /* left channel */ left_step = (left_step > 0x1D) ? 0x1D : left_step; reg = twl6040_read_reg_cache(codec, TWL6040_REG_HFLGAIN); reg = 0x1D - reg; val = (reg & TWL6040_HF_VOL_MASK); if (handsfree->ramp == TWL6040_RAMP_UP) { /* ramp step up */ if (val < handsfree->left_vol) { if (val + left_step > handsfree->left_vol) val = handsfree->left_vol; else val += left_step; reg &= ~TWL6040_HF_VOL_MASK; twl6040_write(codec, TWL6040_REG_HFLGAIN, reg | (0x1D - val)); } else { left_complete = 1; } } else if (handsfree->ramp == TWL6040_RAMP_DOWN) { /* ramp step down */ if (val > 0) { if ((int)val - (int)left_step < 0) val = 0; else val -= left_step; reg &= ~TWL6040_HF_VOL_MASK; twl6040_write(codec, TWL6040_REG_HFLGAIN, reg | (0x1D - val)); } else { left_complete = 1; } } /* right channel */ right_step = (right_step > 0x1D) ? 0x1D : right_step; reg = twl6040_read_reg_cache(codec, TWL6040_REG_HFRGAIN); reg = 0x1D - reg; val = (reg & TWL6040_HF_VOL_MASK); if (handsfree->ramp == TWL6040_RAMP_UP) { /* ramp step up */ if (val < handsfree->right_vol) { if (val + right_step > handsfree->right_vol) val = handsfree->right_vol; else val += right_step; reg &= ~TWL6040_HF_VOL_MASK; twl6040_write(codec, TWL6040_REG_HFRGAIN, reg | (0x1D - val)); } else { right_complete = 1; } } else if (handsfree->ramp == TWL6040_RAMP_DOWN) { /* ramp step down */ if (val > 0) { if ((int)val - (int)right_step < 0) val = 0; else val -= right_step; reg &= ~TWL6040_HF_VOL_MASK; twl6040_write(codec, TWL6040_REG_HFRGAIN, reg | (0x1D - val)); } } return left_complete & right_complete; } /* * This work ramps both output PGAs at stream start/stop time to * minimise pop associated with DAPM power switching. */ static void twl6040_pga_hs_work(struct work_struct *work) { struct twl6040_data *priv = container_of(work, struct twl6040_data, headset.work.work); struct snd_soc_codec *codec = priv->codec; struct twl6040_output *headset = &priv->headset; int i, headset_complete; /* do we need to ramp at all ? */ if (headset->ramp == TWL6040_RAMP_NONE) return; /* HS PGA gain range: 0x0 - 0xf (0 - 15) */ for (i = 0; i < 16; i++) { headset_complete = twl6040_hs_ramp_step(codec, headset->left_step, headset->right_step); /* ramp finished ? */ if (headset_complete) break; schedule_timeout_interruptible( msecs_to_jiffies(headset->step_delay)); } if (headset->ramp == TWL6040_RAMP_DOWN) { headset->active = 0; complete(&headset->ramp_done); } else { headset->active = 1; } headset->ramp = TWL6040_RAMP_NONE; } static void twl6040_pga_hf_work(struct work_struct *work) { struct twl6040_data *priv = container_of(work, struct twl6040_data, handsfree.work.work); struct snd_soc_codec *codec = priv->codec; struct twl6040_output *handsfree = &priv->handsfree; int i, handsfree_complete; /* do we need to ramp at all ? */ if (handsfree->ramp == TWL6040_RAMP_NONE) return; /* * HF PGA gain range: 0x00 - 0x1d (0 - 29) */ for (i = 0; i < 30; i++) { handsfree_complete = twl6040_hf_ramp_step(codec, handsfree->left_step, handsfree->right_step); /* ramp finished ? */ if (handsfree_complete) break; schedule_timeout_interruptible( msecs_to_jiffies(handsfree->step_delay)); } if (handsfree->ramp == TWL6040_RAMP_DOWN) { handsfree->active = 0; complete(&handsfree->ramp_done); } else handsfree->active = 1; handsfree->ramp = TWL6040_RAMP_NONE; } static int out_drv_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); struct twl6040_output *out; struct delayed_work *work; switch (w->shift) { case 2: /* Headset output driver */ out = &priv->headset; work = &out->work; /* * Make sure, that we do not mess up variables for already * executing work. */ cancel_delayed_work_sync(work); out->left_step = priv->hs_left_step; out->right_step = priv->hs_right_step; out->step_delay = 5; /* 5 ms between volume ramp steps */ break; case 4: /* Handsfree output driver */ out = &priv->handsfree; work = &out->work; /* * Make sure, that we do not mess up variables for already * executing work. */ cancel_delayed_work_sync(work); out->left_step = priv->hf_left_step; out->right_step = priv->hf_right_step; out->step_delay = 5; /* 5 ms between volume ramp steps */ if (SND_SOC_DAPM_EVENT_ON(event)) priv->non_lp++; else priv->non_lp--; break; default: return -1; } switch (event) { case SND_SOC_DAPM_POST_PMU: if (out->active) break; /* don't use volume ramp for power-up */ out->ramp = TWL6040_RAMP_UP; out->left_step = out->left_vol; out->right_step = out->right_vol; queue_delayed_work(priv->workqueue, work, msecs_to_jiffies(1)); break; case SND_SOC_DAPM_PRE_PMD: if (!out->active) break; /* use volume ramp for power-down */ out->ramp = TWL6040_RAMP_DOWN; INIT_COMPLETION(out->ramp_done); queue_delayed_work(priv->workqueue, work, msecs_to_jiffies(1)); wait_for_completion_timeout(&out->ramp_done, msecs_to_jiffies(2000)); break; } return 0; } /* set headset dac and driver power mode */ static int headset_power_mode(struct snd_soc_codec *codec, int high_perf) { int hslctl, hsrctl; int mask = TWL6040_HSDRVMODE | TWL6040_HSDACMODE; hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL); hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL); if (high_perf) { hslctl &= ~mask; hsrctl &= ~mask; } else { hslctl |= mask; hsrctl |= mask; } twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl); twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl); return 0; } static int twl6040_hs_dac_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { msleep(1); return 0; } static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); int ret = 0; if (SND_SOC_DAPM_EVENT_ON(event)) { priv->non_lp++; if (!strcmp(w->name, "Earphone Driver")) { /* Earphone doesn't support low power mode */ priv->hs_power_mode_locked = 1; ret = headset_power_mode(codec, 1); } } else { priv->non_lp--; if (!strcmp(w->name, "Earphone Driver")) { priv->hs_power_mode_locked = 0; ret = headset_power_mode(codec, priv->hs_power_mode); } } msleep(1); return ret; } static void twl6040_hs_jack_report(struct snd_soc_codec *codec, struct snd_soc_jack *jack, int report) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); int status; mutex_lock(&priv->mutex); /* Sync status */ status = twl6040_read_reg_volatile(codec, TWL6040_REG_STATUS); if (status & TWL6040_PLUGCOMP) snd_soc_jack_report(jack, report, report); else snd_soc_jack_report(jack, 0, report); mutex_unlock(&priv->mutex); } void twl6040_hs_jack_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack, int report) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); struct twl6040_jack_data *hs_jack = &priv->hs_jack; hs_jack->jack = jack; hs_jack->report = report; twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report); } EXPORT_SYMBOL_GPL(twl6040_hs_jack_detect); static void twl6040_accessory_work(struct work_struct *work) { struct twl6040_data *priv = container_of(work, struct twl6040_data, hs_jack.work.work); struct snd_soc_codec *codec = priv->codec; struct twl6040_jack_data *hs_jack = &priv->hs_jack; twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report); } /* audio interrupt handler */ static irqreturn_t twl6040_audio_handler(int irq, void *data) { struct snd_soc_codec *codec = data; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); queue_delayed_work(priv->workqueue, &priv->hs_jack.work, msecs_to_jiffies(200)); return IRQ_HANDLED; } static int twl6040_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct twl6040_data *twl6040_priv = snd_soc_codec_get_drvdata(codec); struct twl6040_output *out = NULL; struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; int ret; /* For HS and HF we shadow the values and only actually write * them out when active in order to ensure the amplifier comes on * as quietly as possible. */ switch (mc->reg) { case TWL6040_REG_HSGAIN: out = &twl6040_priv->headset; break; case TWL6040_REG_HFLGAIN: out = &twl6040_priv->handsfree; break; default: dev_warn(codec->dev, "%s: Unexpected register: 0x%02x\n", __func__, mc->reg); return -EINVAL; } out->left_vol = ucontrol->value.integer.value[0]; out->right_vol = ucontrol->value.integer.value[1]; if (!out->active) return 1; ret = snd_soc_put_volsw(kcontrol, ucontrol); if (ret < 0) return ret; return 1; } static int twl6040_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct twl6040_data *twl6040_priv = snd_soc_codec_get_drvdata(codec); struct twl6040_output *out = &twl6040_priv->headset; struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; switch (mc->reg) { case TWL6040_REG_HSGAIN: out = &twl6040_priv->headset; break; case TWL6040_REG_HFLGAIN: out = &twl6040_priv->handsfree; break; default: dev_warn(codec->dev, "%s: Unexpected register: 0x%02x\n", __func__, mc->reg); return -EINVAL; } ucontrol->value.integer.value[0] = out->left_vol; ucontrol->value.integer.value[1] = out->right_vol; return 0; } /* * MICATT volume control: * from -6 to 0 dB in 6 dB steps */ static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0); /* * MICGAIN volume control: * from 6 to 30 dB in 6 dB steps */ static DECLARE_TLV_DB_SCALE(mic_amp_tlv, 600, 600, 0); /* * AFMGAIN volume control: * from -18 to 24 dB in 6 dB steps */ static DECLARE_TLV_DB_SCALE(afm_amp_tlv, -1800, 600, 0); /* * HSGAIN volume control: * from -30 to 0 dB in 2 dB steps */ static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0); /* * HFGAIN volume control: * from -52 to 6 dB in 2 dB steps */ static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0); /* * EPGAIN volume control: * from -24 to 6 dB in 2 dB steps */ static DECLARE_TLV_DB_SCALE(ep_tlv, -2400, 200, 0); /* Left analog microphone selection */ static const char *twl6040_amicl_texts[] = {"Headset Mic", "Main Mic", "Aux/FM Left", "Off"}; /* Right analog microphone selection */ static const char *twl6040_amicr_texts[] = {"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"}; static const struct soc_enum twl6040_enum[] = { SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 4, twl6040_amicl_texts), SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 4, twl6040_amicr_texts), }; static const char *twl6040_hs_texts[] = { "Off", "HS DAC", "Line-In amp" }; static const struct soc_enum twl6040_hs_enum[] = { SOC_ENUM_SINGLE(TWL6040_REG_HSLCTL, 5, ARRAY_SIZE(twl6040_hs_texts), twl6040_hs_texts), SOC_ENUM_SINGLE(TWL6040_REG_HSRCTL, 5, ARRAY_SIZE(twl6040_hs_texts), twl6040_hs_texts), }; static const char *twl6040_hf_texts[] = { "Off", "HF DAC", "Line-In amp" }; static const struct soc_enum twl6040_hf_enum[] = { SOC_ENUM_SINGLE(TWL6040_REG_HFLCTL, 2, ARRAY_SIZE(twl6040_hf_texts), twl6040_hf_texts), SOC_ENUM_SINGLE(TWL6040_REG_HFRCTL, 2, ARRAY_SIZE(twl6040_hf_texts), twl6040_hf_texts), }; static const struct snd_kcontrol_new amicl_control = SOC_DAPM_ENUM("Route", twl6040_enum[0]); static const struct snd_kcontrol_new amicr_control = SOC_DAPM_ENUM("Route", twl6040_enum[1]); /* Headset DAC playback switches */ static const struct snd_kcontrol_new hsl_mux_controls = SOC_DAPM_ENUM("Route", twl6040_hs_enum[0]); static const struct snd_kcontrol_new hsr_mux_controls = SOC_DAPM_ENUM("Route", twl6040_hs_enum[1]); /* Handsfree DAC playback switches */ static const struct snd_kcontrol_new hfl_mux_controls = SOC_DAPM_ENUM("Route", twl6040_hf_enum[0]); static const struct snd_kcontrol_new hfr_mux_controls = SOC_DAPM_ENUM("Route", twl6040_hf_enum[1]); static const struct snd_kcontrol_new ep_path_enable_control = SOC_DAPM_SINGLE("Switch", TWL6040_REG_SW_SHADOW, 0, 1, 0); static const struct snd_kcontrol_new auxl_switch_control = SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 6, 1, 0); static const struct snd_kcontrol_new auxr_switch_control = SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 6, 1, 0); /* Headset power mode */ static const char *twl6040_power_mode_texts[] = { "Low-Power", "High-Perfomance", }; static const struct soc_enum twl6040_power_mode_enum = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(twl6040_power_mode_texts), twl6040_power_mode_texts); static int twl6040_headset_power_get_enum(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); ucontrol->value.enumerated.item[0] = priv->hs_power_mode; return 0; } static int twl6040_headset_power_put_enum(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); int high_perf = ucontrol->value.enumerated.item[0]; int ret = 0; if (!priv->hs_power_mode_locked) ret = headset_power_mode(codec, high_perf); if (!ret) priv->hs_power_mode = high_perf; return ret; } static int twl6040_pll_get_enum(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); ucontrol->value.enumerated.item[0] = priv->pll_power_mode; return 0; } static int twl6040_pll_put_enum(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); priv->pll_power_mode = ucontrol->value.enumerated.item[0]; return 0; } int twl6040_get_clk_id(struct snd_soc_codec *codec) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); return priv->pll_power_mode; } EXPORT_SYMBOL_GPL(twl6040_get_clk_id); int twl6040_get_trim_value(struct snd_soc_codec *codec, enum twl6040_trim trim) { if (unlikely(trim >= TWL6040_TRIM_INVAL)) return -EINVAL; return twl6040_read_reg_cache(codec, TWL6040_REG_TRIM1 + trim); } EXPORT_SYMBOL_GPL(twl6040_get_trim_value); static const struct snd_kcontrol_new twl6040_snd_controls[] = { /* Capture gains */ SOC_DOUBLE_TLV("Capture Preamplifier Volume", TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv), SOC_DOUBLE_TLV("Capture Volume", TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv), /* AFM gains */ SOC_DOUBLE_TLV("Aux FM Volume", TWL6040_REG_LINEGAIN, 0, 3, 7, 0, afm_amp_tlv), /* Playback gains */ SOC_DOUBLE_EXT_TLV("Headset Playback Volume", TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, twl6040_get_volsw, twl6040_put_volsw, hs_tlv), SOC_DOUBLE_R_EXT_TLV("Handsfree Playback Volume", TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, twl6040_get_volsw, twl6040_put_volsw, hf_tlv), SOC_SINGLE_TLV("Earphone Playback Volume", TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv), SOC_ENUM_EXT("Headset Power Mode", twl6040_power_mode_enum, twl6040_headset_power_get_enum, twl6040_headset_power_put_enum), SOC_ENUM_EXT("PLL Selection", twl6040_power_mode_enum, twl6040_pll_get_enum, twl6040_pll_put_enum), }; static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = { /* Inputs */ SND_SOC_DAPM_INPUT("MAINMIC"), SND_SOC_DAPM_INPUT("HSMIC"), SND_SOC_DAPM_INPUT("SUBMIC"), SND_SOC_DAPM_INPUT("AFML"), SND_SOC_DAPM_INPUT("AFMR"), /* Outputs */ SND_SOC_DAPM_OUTPUT("HSOL"), SND_SOC_DAPM_OUTPUT("HSOR"), SND_SOC_DAPM_OUTPUT("HFL"), SND_SOC_DAPM_OUTPUT("HFR"), SND_SOC_DAPM_OUTPUT("EP"), SND_SOC_DAPM_OUTPUT("AUXL"), SND_SOC_DAPM_OUTPUT("AUXR"), /* Analog input muxes for the capture amplifiers */ SND_SOC_DAPM_MUX("Analog Left Capture Route", SND_SOC_NOPM, 0, 0, &amicl_control), SND_SOC_DAPM_MUX("Analog Right Capture Route", SND_SOC_NOPM, 0, 0, &amicr_control), /* Analog capture PGAs */ SND_SOC_DAPM_PGA("MicAmpL", TWL6040_REG_MICLCTL, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("MicAmpR", TWL6040_REG_MICRCTL, 0, 0, NULL, 0), /* Auxiliary FM PGAs */ SND_SOC_DAPM_PGA("AFMAmpL", TWL6040_REG_MICLCTL, 1, 0, NULL, 0), SND_SOC_DAPM_PGA("AFMAmpR", TWL6040_REG_MICRCTL, 1, 0, NULL, 0), /* ADCs */ SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture", TWL6040_REG_MICLCTL, 2, 0), SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture", TWL6040_REG_MICRCTL, 2, 0), /* Microphone bias */ SND_SOC_DAPM_MICBIAS("Headset Mic Bias", TWL6040_REG_AMICBCTL, 0, 0), SND_SOC_DAPM_MICBIAS("Main Mic Bias", TWL6040_REG_AMICBCTL, 4, 0), SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias", TWL6040_REG_DMICBCTL, 0, 0), SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias", TWL6040_REG_DMICBCTL, 4, 0), /* DACs */ SND_SOC_DAPM_DAC_E("HSDAC Left", "Headset Playback", TWL6040_REG_HSLCTL, 0, 0, twl6040_hs_dac_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_DAC_E("HSDAC Right", "Headset Playback", TWL6040_REG_HSRCTL, 0, 0, twl6040_hs_dac_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback", TWL6040_REG_HFLCTL, 0, 0, twl6040_power_mode_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback", TWL6040_REG_HFRCTL, 0, 0, twl6040_power_mode_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_MUX("Handsfree Left Playback", SND_SOC_NOPM, 0, 0, &hfl_mux_controls), SND_SOC_DAPM_MUX("Handsfree Right Playback", SND_SOC_NOPM, 0, 0, &hfr_mux_controls), /* Analog playback Muxes */ SND_SOC_DAPM_MUX("Headset Left Playback", SND_SOC_NOPM, 0, 0, &hsl_mux_controls), SND_SOC_DAPM_MUX("Headset Right Playback", SND_SOC_NOPM, 0, 0, &hsr_mux_controls), SND_SOC_DAPM_SWITCH("Earphone Playback", SND_SOC_NOPM, 0, 0, &ep_path_enable_control), SND_SOC_DAPM_SWITCH("AUXL Playback", SND_SOC_NOPM, 0, 0, &auxl_switch_control), SND_SOC_DAPM_SWITCH("AUXR Playback", SND_SOC_NOPM, 0, 0, &auxr_switch_control), /* Analog playback drivers */ SND_SOC_DAPM_OUT_DRV_E("HF Left Driver", TWL6040_REG_HFLCTL, 4, 0, NULL, 0, out_drv_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_OUT_DRV_E("HF Right Driver", TWL6040_REG_HFRCTL, 4, 0, NULL, 0, out_drv_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_OUT_DRV_E("HS Left Driver", TWL6040_REG_HSLCTL, 2, 0, NULL, 0, out_drv_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_OUT_DRV_E("HS Right Driver", TWL6040_REG_HSRCTL, 2, 0, NULL, 0, out_drv_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_OUT_DRV_E("Earphone Driver", TWL6040_REG_EARCTL, 0, 0, NULL, 0, twl6040_power_mode_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), /* Analog playback PGAs */ SND_SOC_DAPM_PGA("HF Left PGA", TWL6040_REG_HFLCTL, 1, 0, NULL, 0), SND_SOC_DAPM_PGA("HF Right PGA", TWL6040_REG_HFRCTL, 1, 0, NULL, 0), }; static const struct snd_soc_dapm_route intercon[] = { /* Capture path */ {"Analog Left Capture Route", "Headset Mic", "HSMIC"}, {"Analog Left Capture Route", "Main Mic", "MAINMIC"}, {"Analog Left Capture Route", "Aux/FM Left", "AFML"}, {"Analog Right Capture Route", "Headset Mic", "HSMIC"}, {"Analog Right Capture Route", "Sub Mic", "SUBMIC"}, {"Analog Right Capture Route", "Aux/FM Right", "AFMR"}, {"MicAmpL", NULL, "Analog Left Capture Route"}, {"MicAmpR", NULL, "Analog Right Capture Route"}, {"ADC Left", NULL, "MicAmpL"}, {"ADC Right", NULL, "MicAmpR"}, /* AFM path */ {"AFMAmpL", NULL, "AFML"}, {"AFMAmpR", NULL, "AFMR"}, {"Headset Left Playback", "HS DAC", "HSDAC Left"}, {"Headset Left Playback", "Line-In amp", "AFMAmpL"}, {"Headset Right Playback", "HS DAC", "HSDAC Right"}, {"Headset Right Playback", "Line-In amp", "AFMAmpR"}, {"HS Left Driver", NULL, "Headset Left Playback"}, {"HS Right Driver", NULL, "Headset Right Playback"}, {"HSOL", NULL, "HS Left Driver"}, {"HSOR", NULL, "HS Right Driver"}, /* Earphone playback path */ {"Earphone Playback", "Switch", "HSDAC Left"}, {"Earphone Driver", NULL, "Earphone Playback"}, {"EP", NULL, "Earphone Driver"}, {"Handsfree Left Playback", "HF DAC", "HFDAC Left"}, {"Handsfree Left Playback", "Line-In amp", "AFMAmpL"}, {"Handsfree Right Playback", "HF DAC", "HFDAC Right"}, {"Handsfree Right Playback", "Line-In amp", "AFMAmpR"}, {"HF Left PGA", NULL, "Handsfree Left Playback"}, {"HF Right PGA", NULL, "Handsfree Right Playback"}, {"HF Left Driver", NULL, "HF Left PGA"}, {"HF Right Driver", NULL, "HF Right PGA"}, {"HFL", NULL, "HF Left Driver"}, {"HFR", NULL, "HF Right Driver"}, {"AUXL Playback", "Switch", "HF Left PGA"}, {"AUXR Playback", "Switch", "HF Right PGA"}, {"AUXL", NULL, "AUXL Playback"}, {"AUXR", NULL, "AUXR Playback"}, }; static int twl6040_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { struct twl6040 *twl6040 = codec->control_data; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); int ret; switch (level) { case SND_SOC_BIAS_ON: break; case SND_SOC_BIAS_PREPARE: break; case SND_SOC_BIAS_STANDBY: if (priv->codec_powered) break; ret = twl6040_power(twl6040, 1); if (ret) return ret; priv->codec_powered = 1; twl6040_restore_regs(codec); /* Set external boost GPO */ twl6040_write(codec, TWL6040_REG_GPOCTL, 0x02); break; case SND_SOC_BIAS_OFF: if (!priv->codec_powered) break; twl6040_power(twl6040, 0); priv->codec_powered = 0; break; } codec->dapm.bias_level = level; return 0; } static int twl6040_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &sysclk_constraints[priv->pll_power_mode]); return 0; } static int twl6040_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); int rate; rate = params_rate(params); switch (rate) { case 11250: case 22500: case 44100: case 88200: /* These rates are not supported when HPPLL is in use */ if (unlikely(priv->pll == TWL6040_SYSCLK_SEL_HPPLL)) { dev_err(codec->dev, "HPPLL does not support rate %d\n", rate); return -EINVAL; } /* Capture is not supported with 17.64MHz sysclk */ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { dev_err(codec->dev, "capture mode is not supported at %dHz\n", rate); return -EINVAL; } priv->sysclk = 17640000; break; case 8000: case 16000: case 32000: case 48000: case 96000: priv->sysclk = 19200000; break; default: dev_err(codec->dev, "unsupported rate %d\n", rate); return -EINVAL; } return 0; } static int twl6040_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; struct twl6040 *twl6040 = codec->control_data; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); int ret; if (!priv->sysclk) { dev_err(codec->dev, "no mclk configured, call set_sysclk() on init\n"); return -EINVAL; } if ((priv->sysclk == 17640000) && priv->non_lp) { dev_err(codec->dev, "some enabled paths aren't supported at %dHz\n", priv->sysclk); return -EPERM; } ret = twl6040_set_pll(twl6040, priv->pll, priv->clk_in, priv->sysclk); if (ret) { dev_err(codec->dev, "Can not set PLL (%d)\n", ret); return -EPERM; } return 0; } static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = codec_dai->codec; struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); switch (clk_id) { case TWL6040_SYSCLK_SEL_LPPLL: case TWL6040_SYSCLK_SEL_HPPLL: priv->pll = clk_id; priv->clk_in = freq; break; default: dev_err(codec->dev, "unknown clk_id %d\n", clk_id); return -EINVAL; } return 0; } static struct snd_soc_dai_ops twl6040_dai_ops = { .startup = twl6040_startup, .hw_params = twl6040_hw_params, .prepare = twl6040_prepare, .set_sysclk = twl6040_set_dai_sysclk, }; static struct snd_soc_dai_driver twl6040_dai[] = { { .name = "twl6040-legacy", .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 5, .rates = TWL6040_RATES, .formats = TWL6040_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = TWL6040_RATES, .formats = TWL6040_FORMATS, }, .ops = &twl6040_dai_ops, }, { .name = "twl6040-ul", .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = TWL6040_RATES, .formats = TWL6040_FORMATS, }, .ops = &twl6040_dai_ops, }, { .name = "twl6040-dl1", .playback = { .stream_name = "Headset Playback", .channels_min = 1, .channels_max = 2, .rates = TWL6040_RATES, .formats = TWL6040_FORMATS, }, .ops = &twl6040_dai_ops, }, { .name = "twl6040-dl2", .playback = { .stream_name = "Handsfree Playback", .channels_min = 1, .channels_max = 2, .rates = TWL6040_RATES, .formats = TWL6040_FORMATS, }, .ops = &twl6040_dai_ops, }, { .name = "twl6040-vib", .playback = { .stream_name = "Vibra Playback", .channels_min = 1, .channels_max = 1, .rates = SNDRV_PCM_RATE_CONTINUOUS, .formats = TWL6040_FORMATS, }, .ops = &twl6040_dai_ops, }, }; #ifdef CONFIG_PM static int twl6040_suspend(struct snd_soc_codec *codec, pm_message_t state) { twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static int twl6040_resume(struct snd_soc_codec *codec) { twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY); twl6040_set_bias_level(codec, codec->dapm.suspend_bias_level); return 0; } #else #define twl6040_suspend NULL #define twl6040_resume NULL #endif static int twl6040_probe(struct snd_soc_codec *codec) { struct twl6040_data *priv; struct twl4030_codec_data *pdata = dev_get_platdata(codec->dev); struct platform_device *pdev = container_of(codec->dev, struct platform_device, dev); int ret = 0; priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL); if (priv == NULL) return -ENOMEM; snd_soc_codec_set_drvdata(codec, priv); priv->codec = codec; codec->control_data = dev_get_drvdata(codec->dev->parent); if (pdata && pdata->hs_left_step && pdata->hs_right_step) { priv->hs_left_step = pdata->hs_left_step; priv->hs_right_step = pdata->hs_right_step; } else { priv->hs_left_step = 1; priv->hs_right_step = 1; } if (pdata && pdata->hf_left_step && pdata->hf_right_step) { priv->hf_left_step = pdata->hf_left_step; priv->hf_right_step = pdata->hf_right_step; } else { priv->hf_left_step = 1; priv->hf_right_step = 1; } priv->plug_irq = platform_get_irq(pdev, 0); if (priv->plug_irq < 0) { dev_err(codec->dev, "invalid irq\n"); ret = -EINVAL; goto work_err; } priv->workqueue = alloc_workqueue("twl6040-codec", 0, 0); if (!priv->workqueue) { ret = -ENOMEM; goto work_err; } INIT_DELAYED_WORK(&priv->hs_jack.work, twl6040_accessory_work); INIT_DELAYED_WORK(&priv->headset.work, twl6040_pga_hs_work); INIT_DELAYED_WORK(&priv->handsfree.work, twl6040_pga_hf_work); mutex_init(&priv->mutex); init_completion(&priv->headset.ramp_done); init_completion(&priv->handsfree.ramp_done); ret = request_threaded_irq(priv->plug_irq, NULL, twl6040_audio_handler, 0, "twl6040_irq_plug", codec); if (ret) { dev_err(codec->dev, "PLUG IRQ request failed: %d\n", ret); goto plugirq_err; } twl6040_init_chip(codec); /* power on device */ ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY); if (!ret) return 0; /* Error path */ free_irq(priv->plug_irq, codec); plugirq_err: destroy_workqueue(priv->workqueue); work_err: kfree(priv); return ret; } static int twl6040_remove(struct snd_soc_codec *codec) { struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec); twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF); free_irq(priv->plug_irq, codec); destroy_workqueue(priv->workqueue); kfree(priv); return 0; } static struct snd_soc_codec_driver soc_codec_dev_twl6040 = { .probe = twl6040_probe, .remove = twl6040_remove, .suspend = twl6040_suspend, .resume = twl6040_resume, .read = twl6040_read_reg_cache, .write = twl6040_write, .set_bias_level = twl6040_set_bias_level, .reg_cache_size = ARRAY_SIZE(twl6040_reg), .reg_word_size = sizeof(u8), .reg_cache_default = twl6040_reg, .controls = twl6040_snd_controls, .num_controls = ARRAY_SIZE(twl6040_snd_controls), .dapm_widgets = twl6040_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets), .dapm_routes = intercon, .num_dapm_routes = ARRAY_SIZE(intercon), }; static int __devinit twl6040_codec_probe(struct platform_device *pdev) { return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_twl6040, twl6040_dai, ARRAY_SIZE(twl6040_dai)); } static int __devexit twl6040_codec_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } static struct platform_driver twl6040_codec_driver = { .driver = { .name = "twl6040-codec", .owner = THIS_MODULE, }, .probe = twl6040_codec_probe, .remove = __devexit_p(twl6040_codec_remove), }; static int __init twl6040_codec_init(void) { return platform_driver_register(&twl6040_codec_driver); } module_init(twl6040_codec_init); static void __exit twl6040_codec_exit(void) { platform_driver_unregister(&twl6040_codec_driver); } module_exit(twl6040_codec_exit); MODULE_DESCRIPTION("ASoC TWL6040 codec driver"); MODULE_AUTHOR("Misael Lopez Cruz"); MODULE_LICENSE("GPL");