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Diffstat (limited to 'sound/soc/codecs/wm_hubs.c')
-rw-r--r--sound/soc/codecs/wm_hubs.c148
1 files changed, 122 insertions, 26 deletions
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index d73c305..0ad9f5d 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -68,24 +68,77 @@ static void wait_for_dc_servo(struct snd_soc_codec *codec)
int count = 0;
dev_dbg(codec->dev, "Waiting for DC servo...\n");
+
do {
count++;
msleep(1);
reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_0);
- dev_dbg(codec->dev, "DC servo status: %x\n", reg);
- } while ((reg & WM8993_DCS_CAL_COMPLETE_MASK)
- != WM8993_DCS_CAL_COMPLETE_MASK && count < 1000);
+ dev_dbg(codec->dev, "DC servo: %x\n", reg);
+ } while (reg & WM8993_DCS_DATAPATH_BUSY);
- if ((reg & WM8993_DCS_CAL_COMPLETE_MASK)
- != WM8993_DCS_CAL_COMPLETE_MASK)
+ if (reg & WM8993_DCS_DATAPATH_BUSY)
dev_err(codec->dev, "Timed out waiting for DC Servo\n");
}
/*
+ * Startup calibration of the DC servo
+ */
+static void calibrate_dc_servo(struct snd_soc_codec *codec)
+{
+ struct wm_hubs_data *hubs = codec->private_data;
+ u16 reg, dcs_cfg;
+
+ /* Set for 32 series updates */
+ snd_soc_update_bits(codec, WM8993_DC_SERVO_1,
+ WM8993_DCS_SERIES_NO_01_MASK,
+ 32 << WM8993_DCS_SERIES_NO_01_SHIFT);
+
+ /* Enable the DC servo. Write all bits to avoid triggering startup
+ * or write calibration.
+ */
+ snd_soc_update_bits(codec, WM8993_DC_SERVO_0,
+ 0xFFFF,
+ WM8993_DCS_ENA_CHAN_0 |
+ WM8993_DCS_ENA_CHAN_1 |
+ WM8993_DCS_TRIG_SERIES_1 |
+ WM8993_DCS_TRIG_SERIES_0);
+
+ wait_for_dc_servo(codec);
+
+ /* Apply correction to DC servo result */
+ if (hubs->dcs_codes) {
+ dev_dbg(codec->dev, "Applying %d code DC servo correction\n",
+ hubs->dcs_codes);
+
+ /* HPOUT1L */
+ reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_1) &
+ WM8993_DCS_INTEG_CHAN_0_MASK;;
+ reg += hubs->dcs_codes;
+ dcs_cfg = reg << WM8993_DCS_DAC_WR_VAL_1_SHIFT;
+
+ /* HPOUT1R */
+ reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_2) &
+ WM8993_DCS_INTEG_CHAN_1_MASK;
+ reg += hubs->dcs_codes;
+ dcs_cfg |= reg;
+
+ /* Do it */
+ snd_soc_write(codec, WM8993_DC_SERVO_3, dcs_cfg);
+ snd_soc_update_bits(codec, WM8993_DC_SERVO_0,
+ WM8993_DCS_TRIG_DAC_WR_0 |
+ WM8993_DCS_TRIG_DAC_WR_1,
+ WM8993_DCS_TRIG_DAC_WR_0 |
+ WM8993_DCS_TRIG_DAC_WR_1);
+
+ wait_for_dc_servo(codec);
+ }
+}
+
+/*
* Update the DC servo calibration on gain changes
*/
static int wm8993_put_dc_servo(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+ struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
int ret;
@@ -251,6 +304,47 @@ SOC_SINGLE_TLV("LINEOUT2 Volume", WM8993_LINE_OUTPUTS_VOLUME, 0, 1, 1,
line_tlv),
};
+static int hp_supply_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ struct wm_hubs_data *hubs = codec->private_data;
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ switch (hubs->hp_startup_mode) {
+ case 0:
+ break;
+ case 1:
+ /* Enable the headphone amp */
+ snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
+ WM8993_HPOUT1L_ENA |
+ WM8993_HPOUT1R_ENA,
+ WM8993_HPOUT1L_ENA |
+ WM8993_HPOUT1R_ENA);
+
+ /* Enable the second stage */
+ snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
+ WM8993_HPOUT1L_DLY |
+ WM8993_HPOUT1R_DLY,
+ WM8993_HPOUT1L_DLY |
+ WM8993_HPOUT1R_DLY);
+ break;
+ default:
+ dev_err(codec->dev, "Unknown HP startup mode %d\n",
+ hubs->hp_startup_mode);
+ break;
+ }
+
+ case SND_SOC_DAPM_PRE_PMD:
+ snd_soc_update_bits(codec, WM8993_CHARGE_PUMP_1,
+ WM8993_CP_ENA, 0);
+ break;
+ }
+
+ return 0;
+}
+
static int hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
@@ -271,14 +365,11 @@ static int hp_event(struct snd_soc_dapm_widget *w,
reg |= WM8993_HPOUT1L_DLY | WM8993_HPOUT1R_DLY;
snd_soc_write(codec, WM8993_ANALOGUE_HP_0, reg);
- /* Start the DC servo */
- snd_soc_update_bits(codec, WM8993_DC_SERVO_0,
- 0xFFFF,
- WM8993_DCS_ENA_CHAN_0 |
- WM8993_DCS_ENA_CHAN_1 |
- WM8993_DCS_TRIG_STARTUP_1 |
- WM8993_DCS_TRIG_STARTUP_0);
- wait_for_dc_servo(codec);
+ /* Smallest supported update interval */
+ snd_soc_update_bits(codec, WM8993_DC_SERVO_1,
+ WM8993_DCS_TIMER_PERIOD_01_MASK, 1);
+
+ calibrate_dc_servo(codec);
reg |= WM8993_HPOUT1R_OUTP | WM8993_HPOUT1R_RMV_SHORT |
WM8993_HPOUT1L_OUTP | WM8993_HPOUT1L_RMV_SHORT;
@@ -286,23 +377,19 @@ static int hp_event(struct snd_soc_dapm_widget *w,
break;
case SND_SOC_DAPM_PRE_PMD:
- reg &= ~(WM8993_HPOUT1L_RMV_SHORT |
- WM8993_HPOUT1L_DLY |
- WM8993_HPOUT1L_OUTP |
- WM8993_HPOUT1R_RMV_SHORT |
- WM8993_HPOUT1R_DLY |
- WM8993_HPOUT1R_OUTP);
+ snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
+ WM8993_HPOUT1L_DLY |
+ WM8993_HPOUT1R_DLY |
+ WM8993_HPOUT1L_RMV_SHORT |
+ WM8993_HPOUT1R_RMV_SHORT, 0);
- snd_soc_update_bits(codec, WM8993_DC_SERVO_0,
- 0xffff, 0);
+ snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
+ WM8993_HPOUT1L_OUTP |
+ WM8993_HPOUT1R_OUTP, 0);
- snd_soc_write(codec, WM8993_ANALOGUE_HP_0, reg);
snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
WM8993_HPOUT1L_ENA | WM8993_HPOUT1R_ENA,
0);
-
- snd_soc_update_bits(codec, WM8993_CHARGE_PUMP_1,
- WM8993_CP_ENA, 0);
break;
}
@@ -473,6 +560,8 @@ SND_SOC_DAPM_MIXER("Right Output Mixer", WM8993_POWER_MANAGEMENT_3, 4, 0,
SND_SOC_DAPM_PGA("Left Output PGA", WM8993_POWER_MANAGEMENT_3, 7, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Output PGA", WM8993_POWER_MANAGEMENT_3, 6, 0, NULL, 0),
+SND_SOC_DAPM_SUPPLY("Headphone Supply", SND_SOC_NOPM, 0, 0, hp_supply_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_E("Headphone PGA", SND_SOC_NOPM, 0, 0,
NULL, 0,
hp_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
@@ -626,6 +715,7 @@ static const struct snd_soc_dapm_route analogue_routes[] = {
{ "Headphone PGA", NULL, "Left Headphone Mux" },
{ "Headphone PGA", NULL, "Right Headphone Mux" },
{ "Headphone PGA", NULL, "CLK_SYS" },
+ { "Headphone PGA", NULL, "Headphone Supply" },
{ "HPOUT1L", NULL, "Headphone PGA" },
{ "HPOUT1R", NULL, "Headphone PGA" },
@@ -753,6 +843,12 @@ int wm_hubs_handle_analogue_pdata(struct snd_soc_codec *codec,
WM8993_LINEOUT2_MODE,
WM8993_LINEOUT2_MODE);
+ /* If the line outputs are differential then we aren't presenting
+ * VMID as an output and can disable it.
+ */
+ if (lineout1_diff && lineout2_diff)
+ codec->idle_bias_off = 1;
+
if (lineout1fb)
snd_soc_update_bits(codec, WM8993_ADDITIONAL_CONTROL,
WM8993_LINEOUT1_FB, WM8993_LINEOUT1_FB);
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