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-rw-r--r--sound/soc/codecs/twl6040.c533
1 files changed, 521 insertions, 12 deletions
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
index b252cf8..2f68f59 100644
--- a/sound/soc/codecs/twl6040.c
+++ b/sound/soc/codecs/twl6040.c
@@ -40,7 +40,35 @@
#include "twl6040.h"
#define TWL6040_RATES SNDRV_PCM_RATE_8000_96000
-#define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
+#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
+
+struct twl6040_output {
+ u16 active;
+ u16 left_vol;
+ u16 right_vol;
+ u16 left_step;
+ u16 right_step;
+ unsigned int step_delay;
+ u16 ramp;
+ u16 mute;
+ struct completion ramp_done;
+};
struct twl6040_jack_data {
struct snd_soc_jack *jack;
@@ -62,6 +90,12 @@ struct twl6040_data {
struct workqueue_struct *workqueue;
struct delayed_work delayed_work;
struct mutex mutex;
+ struct twl6040_output headset;
+ struct twl6040_output handsfree;
+ struct workqueue_struct *hf_workqueue;
+ struct workqueue_struct *hs_workqueue;
+ struct delayed_work hs_delayed_work;
+ struct delayed_work hf_delayed_work;
};
/*
@@ -263,6 +297,305 @@ static void twl6040_init_vdd_regs(struct snd_soc_codec *codec)
}
}
+/*
+ * 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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) {
+ 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, hs_delayed_work.work);
+ struct snd_soc_codec *codec = priv->codec;
+ struct twl6040_output *headset = &priv->headset;
+ unsigned int delay = headset->step_delay;
+ int i, headset_complete;
+
+ /* do we need to ramp at all ? */
+ if (headset->ramp == TWL6040_RAMP_NONE)
+ return;
+
+ /* HS PGA volumes have 4 bits of resolution to ramp */
+ for (i = 0; i <= 16; i++) {
+ headset_complete = 1;
+ if (headset->ramp != TWL6040_RAMP_NONE)
+ headset_complete = twl6040_hs_ramp_step(codec,
+ headset->left_step,
+ headset->right_step);
+
+ /* ramp finished ? */
+ if (headset_complete)
+ break;
+
+ /*
+ * TODO: tune: delay is longer over 0dB
+ * as increases are larger.
+ */
+ if (i >= 8)
+ schedule_timeout_interruptible(msecs_to_jiffies(delay +
+ (delay >> 1)));
+ else
+ schedule_timeout_interruptible(msecs_to_jiffies(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, hf_delayed_work.work);
+ struct snd_soc_codec *codec = priv->codec;
+ struct twl6040_output *handsfree = &priv->handsfree;
+ unsigned int delay = handsfree->step_delay;
+ int i, handsfree_complete;
+
+ /* do we need to ramp at all ? */
+ if (handsfree->ramp == TWL6040_RAMP_NONE)
+ return;
+
+ /* HF PGA volumes have 5 bits of resolution to ramp */
+ for (i = 0; i <= 32; i++) {
+ handsfree_complete = 1;
+ if (handsfree->ramp != TWL6040_RAMP_NONE)
+ handsfree_complete = twl6040_hf_ramp_step(codec,
+ handsfree->left_step,
+ handsfree->right_step);
+
+ /* ramp finished ? */
+ if (handsfree_complete)
+ break;
+
+ /*
+ * TODO: tune: delay is longer over 0dB
+ * as increases are larger.
+ */
+ if (i >= 16)
+ schedule_timeout_interruptible(msecs_to_jiffies(delay +
+ (delay >> 1)));
+ else
+ schedule_timeout_interruptible(msecs_to_jiffies(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 pga_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;
+ struct workqueue_struct *queue;
+
+ switch (w->shift) {
+ case 2:
+ case 3:
+ out = &priv->headset;
+ work = &priv->hs_delayed_work;
+ queue = priv->hs_workqueue;
+ out->step_delay = 5; /* 5 ms between volume ramp steps */
+ break;
+ case 4:
+ out = &priv->handsfree;
+ work = &priv->hf_delayed_work;
+ queue = priv->hf_workqueue;
+ 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->left_step = out->left_vol;
+ out->right_step = out->right_vol;
+
+ if (!delayed_work_pending(work)) {
+ out->ramp = TWL6040_RAMP_UP;
+ queue_delayed_work(queue, work,
+ msecs_to_jiffies(1));
+ }
+ break;
+
+ case SND_SOC_DAPM_PRE_PMD:
+ if (!out->active)
+ break;
+
+ if (!delayed_work_pending(work)) {
+ /* use volume ramp for power-down */
+ out->left_step = 1;
+ out->right_step = 1;
+ out->ramp = TWL6040_RAMP_DOWN;
+ INIT_COMPLETION(out->ramp_done);
+
+ queue_delayed_work(queue, work,
+ msecs_to_jiffies(1));
+
+ wait_for_completion_timeout(&out->ramp_done,
+ msecs_to_jiffies(2000));
+ }
+ break;
+ }
+
+ return 0;
+}
+
/* twl6040 codec manual power-up sequence */
static void twl6040_power_up(struct snd_soc_codec *codec)
{
@@ -463,6 +796,156 @@ static irqreturn_t twl6040_naudint_handler(int irq, void *data)
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;
+ unsigned int reg = mc->reg;
+
+ /* 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 (reg) {
+ case TWL6040_REG_HSGAIN:
+ out = &twl6040_priv->headset;
+ break;
+ default:
+ break;
+ }
+
+ if (out) {
+ 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;
+ unsigned int reg = mc->reg;
+
+ switch (reg) {
+ case TWL6040_REG_HSGAIN:
+ out = &twl6040_priv->headset;
+ ucontrol->value.integer.value[0] = out->left_vol;
+ ucontrol->value.integer.value[1] = out->right_vol;
+ return 0;
+
+ default:
+ break;
+ }
+
+ return snd_soc_get_volsw(kcontrol, ucontrol);
+}
+
+static int twl6040_put_volsw_2r_vu(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;
+ unsigned int reg = mc->reg;
+
+ /* 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 (reg) {
+ case TWL6040_REG_HFLGAIN:
+ case TWL6040_REG_HFRGAIN:
+ out = &twl6040_priv->handsfree;
+ break;
+ default:
+ break;
+ }
+
+ if (out) {
+ 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_2r(kcontrol, ucontrol);
+ if (ret < 0)
+ return ret;
+
+ return 1;
+}
+
+static int twl6040_get_volsw_2r(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->handsfree;
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ unsigned int reg = mc->reg;
+
+ /* If these are cached registers use the cache */
+ switch (reg) {
+ case TWL6040_REG_HFLGAIN:
+ case TWL6040_REG_HFRGAIN:
+ out = &twl6040_priv->handsfree;
+ ucontrol->value.integer.value[0] = out->left_vol;
+ ucontrol->value.integer.value[1] = out->right_vol;
+ return 0;
+
+ default:
+ break;
+ }
+
+ return snd_soc_get_volsw_2r(kcontrol, ucontrol);
+}
+
+/* double control with volume update */
+#define SOC_TWL6040_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax,\
+ xinvert, tlv_array)\
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
+ SNDRV_CTL_ELEM_ACCESS_READWRITE,\
+ .tlv.p = (tlv_array), \
+ .info = snd_soc_info_volsw, .get = twl6040_get_volsw, \
+ .put = twl6040_put_volsw, \
+ .private_value = (unsigned long)&(struct soc_mixer_control) \
+ {.reg = xreg, .shift = shift_left, .rshift = shift_right,\
+ .max = xmax, .platform_max = xmax, .invert = xinvert} }
+
+/* double control with volume update */
+#define SOC_TWL6040_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax,\
+ xinvert, tlv_array)\
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
+ SNDRV_CTL_ELEM_ACCESS_READWRITE | \
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+ .tlv.p = (tlv_array), \
+ .info = snd_soc_info_volsw_2r, \
+ .get = twl6040_get_volsw_2r, .put = twl6040_put_volsw_2r_vu, \
+ .private_value = (unsigned long)&(struct soc_mixer_control) \
+ {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
+ .rshift = xshift, .max = xmax, .invert = xinvert}, }
+
/*
* MICATT volume control:
* from -6 to 0 dB in 6 dB steps
@@ -569,9 +1052,9 @@ static const struct snd_kcontrol_new twl6040_snd_controls[] = {
TWL6040_REG_LINEGAIN, 0, 4, 0xF, 0, afm_amp_tlv),
/* Playback gains */
- SOC_DOUBLE_TLV("Headset Playback Volume",
+ SOC_TWL6040_DOUBLE_TLV("Headset Playback Volume",
TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
- SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
+ SOC_TWL6040_DOUBLE_R_TLV("Handsfree Playback Volume",
TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
SOC_SINGLE_TLV("Earphone Playback Volume",
TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv),
@@ -657,16 +1140,20 @@ static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
/* Analog playback drivers */
SND_SOC_DAPM_PGA_E("Handsfree Left Driver",
TWL6040_REG_HFLCTL, 4, 0, NULL, 0,
- twl6040_power_mode_event,
- SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+ pga_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_E("Handsfree Right Driver",
TWL6040_REG_HFRCTL, 4, 0, NULL, 0,
- twl6040_power_mode_event,
- SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
- SND_SOC_DAPM_PGA("Headset Left Driver",
- TWL6040_REG_HSLCTL, 2, 0, NULL, 0),
- SND_SOC_DAPM_PGA("Headset Right Driver",
- TWL6040_REG_HSRCTL, 2, 0, NULL, 0),
+ pga_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_PGA_E("Headset Left Driver",
+ TWL6040_REG_HSLCTL, 2, 0, NULL, 0,
+ pga_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_PGA_E("Headset Right Driver",
+ TWL6040_REG_HSRCTL, 2, 0, NULL, 0,
+ pga_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_SWITCH_E("Earphone Driver",
SND_SOC_NOPM, 0, 0, &ep_driver_switch_controls,
twl6040_power_mode_event,
@@ -1150,6 +1637,8 @@ static int twl6040_probe(struct snd_soc_codec *codec)
mutex_init(&priv->mutex);
init_completion(&priv->ready);
+ init_completion(&priv->headset.ramp_done);
+ init_completion(&priv->handsfree.ramp_done);
if (gpio_is_valid(audpwron)) {
ret = gpio_request(audpwron, "audpwron");
@@ -1183,10 +1672,24 @@ static int twl6040_probe(struct snd_soc_codec *codec)
/* init vio registers */
twl6040_init_vio_regs(codec);
+ priv->hf_workqueue = create_singlethread_workqueue("twl6040-hf");
+ if (priv->hf_workqueue == NULL) {
+ ret = -ENOMEM;
+ goto irq_err;
+ }
+ priv->hs_workqueue = create_singlethread_workqueue("twl6040-hs");
+ if (priv->hs_workqueue == NULL) {
+ ret = -ENOMEM;
+ goto wq_err;
+ }
+
+ INIT_DELAYED_WORK(&priv->hs_delayed_work, twl6040_pga_hs_work);
+ INIT_DELAYED_WORK(&priv->hf_delayed_work, twl6040_pga_hf_work);
+
/* power on device */
ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
if (ret)
- goto irq_err;
+ goto bias_err;
snd_soc_add_controls(codec, twl6040_snd_controls,
ARRAY_SIZE(twl6040_snd_controls));
@@ -1194,6 +1697,10 @@ static int twl6040_probe(struct snd_soc_codec *codec)
return 0;
+bias_err:
+ destroy_workqueue(priv->hs_workqueue);
+wq_err:
+ destroy_workqueue(priv->hf_workqueue);
irq_err:
if (naudint)
free_irq(naudint, codec);
@@ -1222,6 +1729,8 @@ static int twl6040_remove(struct snd_soc_codec *codec)
free_irq(naudint, codec);
destroy_workqueue(priv->workqueue);
+ destroy_workqueue(priv->hf_workqueue);
+ destroy_workqueue(priv->hs_workqueue);
kfree(priv);
return 0;
generated by cgit v1.1 at 2024-06-12 13:22:54 +0000