From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/codecs/wcd9335.c | 268 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 266 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c index efbb698..6c95cff 100644 --- a/sound/soc/codecs/wcd9335.c +++ b/sound/soc/codecs/wcd9335.c @@ -11,6 +11,7 @@ #include <linux/regulator/consumer.h> #include <linux/clk.h> #include <linux/delay.h> +#include <sound/jack.h> #include <linux/kernel.h> #include <linux/slimbus.h> #include <sound/soc.h> @@ -89,12 +90,18 @@ #define CF_MIN_3DB_75HZ 0x1 #define CF_MIN_3DB_150HZ 0x2
+#define WCD9335_MBHC_MAX_BUTTONS (8) + #define WCD9335_SLIM_RX_CH(p) \ {.port = p + WCD9335_RX_START, .shift = p,}
#define WCD9335_SLIM_TX_CH(p) \ {.port = p, .shift = p,}
+static int btn_mask = SND_JACK_BTN_0 | SND_JACK_BTN_1 | + SND_JACK_BTN_2 | SND_JACK_BTN_3 | SND_JACK_BTN_4; +static int hs_jack_mask = SND_JACK_HEADPHONE | SND_JACK_HEADSET; + /* vout step value */ #define WCD9335_CALCULATE_VOUT_D(req_mv) (((req_mv - 650) * 10) / 25)
@@ -323,6 +330,16 @@ struct wcd9335_codec { u32 num_rx_port; u32 num_tx_port;
+ struct snd_soc_jack *jack; + bool hphl_jack_type_normally_open; + bool gnd_jack_type_normally_open; + bool mbhc_btn_enabled; + int mbhc_btn0_released; + bool detect_accessory_type; + int accessory_type; + /* Voltage threshold for button detection */ + u32 vref_btn[WCD9335_MBHC_MAX_BUTTONS]; + int sido_input_src; enum wcd9335_sido_voltage sido_voltage;
@@ -2829,7 +2846,6 @@ static int wcd9335_codec_enable_dec(struct snd_soc_dapm_widget *w, break; case SND_SOC_DAPM_POST_PMU: snd_soc_component_update_bits(comp, hpf_gate_reg, 0x01, 0x00); - if (decimator == 0) { snd_soc_component_write(comp, WCD9335_MBHC_ZDET_RAMP_CTL, 0x83); @@ -2840,7 +2856,6 @@ static int wcd9335_codec_enable_dec(struct snd_soc_dapm_widget *w, snd_soc_component_write(comp, WCD9335_MBHC_ZDET_RAMP_CTL, 0x03); } - snd_soc_component_update_bits(comp, hpf_gate_reg, 0x01, 0x01); snd_soc_component_update_bits(comp, tx_vol_ctl_reg, @@ -3988,6 +4003,131 @@ static int wcd9335_codec_enable_ear_pa(struct snd_soc_dapm_widget *w, return ret; }
+static irqreturn_t wcd9335_mbhc_sw_irq(int irq, void *data) +{ + struct wcd9335_codec *wcd = data; + struct snd_soc_component *component = wcd->component; + bool ins = false; + + if (snd_soc_component_read32(component, WCD9335_ANA_MBHC_MECH) & + WCD9335_MBHC_MECH_DETECT_TYPE_MASK) + ins = true; + + /* Set the detection type appropriately */ + snd_soc_component_update_bits(component, WCD9335_ANA_MBHC_MECH, + WCD9335_MBHC_MECH_DETECT_TYPE_MASK, + (!ins << WCD9335_MBHC_MECH_DETECT_TYPE_SHIFT)); + + if (ins) { /* hs insertion */ + u32 btndet_curr_src; + + /* + * If no micbias is enabled, then enable 100uA internal + * current source for Button detection + */ + if (snd_soc_component_read32(component, WCD9335_ANA_MICB2) & + WCD9335_ANA_MICB2_ENABLE) + btndet_curr_src = WCD9335_ANA_MBHC_BD_ISRC_OFF; + else + btndet_curr_src = WCD9335_ANA_MBHC_BD_ISRC_100UA; + + snd_soc_component_update_bits(component, + WCD9335_ANA_MBHC_ELECT, + WCD9335_ANA_MBHC_BD_ISRC_CTL_MASK, + btndet_curr_src); + + /* + * if only a btn0 press event is receive just before + * insert event then its a 3 pole headphone else if + * both press and release event received then its + * a headset. + */ + if (wcd->mbhc_btn0_released) { + snd_soc_jack_report(wcd->jack, + SND_JACK_HEADSET, hs_jack_mask); + wcd->accessory_type = SND_JACK_HEADSET; + } else { + snd_soc_jack_report(wcd->jack, + SND_JACK_HEADPHONE, hs_jack_mask); + wcd->accessory_type = SND_JACK_HEADPHONE; + } + + wcd->detect_accessory_type = false; + + } else { /* removal */ + snd_soc_jack_report(wcd->jack, 0, hs_jack_mask); + wcd->detect_accessory_type = true; + wcd->mbhc_btn0_released = false; + } + + return IRQ_HANDLED; +} + +static irqreturn_t wcd9335_mbhc_btn_press_irq(int irq, void *data) +{ + struct wcd9335_codec *wcd = data; + struct snd_soc_component *comp = wcd->component; + u32 btn_result, result; + + /* do not handle any button events for headset without buttons */ + if (wcd->accessory_type == SND_JACK_HEADPHONE) + return IRQ_HANDLED; + + result = snd_soc_component_read32(comp, WCD9335_ANA_MBHC_RESULT_3); + btn_result = result & WCD9335_MBHC_BTN_RESULT_MASK; + + switch (btn_result) { + case 0xf: + snd_soc_jack_report(wcd->jack, SND_JACK_BTN_4, btn_mask); + break; + case 0x4: + snd_soc_jack_report(wcd->jack, SND_JACK_BTN_4, btn_mask); + break; + case 0x3: + snd_soc_jack_report(wcd->jack, SND_JACK_BTN_3, btn_mask); + break; + case 0x2: + snd_soc_jack_report(wcd->jack, SND_JACK_BTN_2, btn_mask); + break; + case 0x1: + snd_soc_jack_report(wcd->jack, SND_JACK_BTN_1, btn_mask); + break; + case 0x0: + /* handle BTN_0 specially for type detection */ + if (!wcd->detect_accessory_type) + snd_soc_jack_report(wcd->jack, + SND_JACK_BTN_0, btn_mask); + break; + default: + dev_err(comp->dev, + "Unexpected button press result (%x)", btn_result); + break; + } + + return IRQ_HANDLED; +} + +static irqreturn_t wcd9335_mbhc_bt_rel_irq(int irq, void *data) +{ + struct wcd9335_codec *wcd = data; + + + if (wcd->detect_accessory_type) { + u32 result = snd_soc_component_read32(wcd->component, + WCD9335_ANA_MBHC_RESULT_3); + + /* check if its BTN0 thats released */ + if (!(result & WCD9335_MBHC_BTN_RESULT_MASK)) + wcd->mbhc_btn0_released = true; + + } else { + if (wcd->accessory_type != SND_JACK_HEADPHONE) + snd_soc_jack_report(wcd->jack, 0, btn_mask); + } + + return IRQ_HANDLED; +} + static irqreturn_t wcd9335_slimbus_irq(int irq, void *data) { struct wcd9335_codec *wcd = data; @@ -4057,11 +4197,95 @@ static irqreturn_t wcd9335_slimbus_irq(int irq, void *data) return IRQ_HANDLED; }
+static void wcd9335_program_btn_threshold(struct wcd9335_codec *wcd) +{ + int i, vth; + + for (i = 0; i < WCD9335_MBHC_MAX_BUTTONS; i++) { + vth = ((wcd->vref_btn[i] * 2) / 25) & 0x3F; + snd_soc_component_update_bits(wcd->component, + WCD9335_ANA_MBHC_BTN0 + i, + 0xFC, vth << 2); + } +} + +static void wcd9335_mbhc_initialise(struct wcd9335_codec *wcd) +{ + struct snd_soc_component *comp = wcd->component; + u32 plug_type = 0; + + snd_soc_component_update_bits(comp, WCD9335_MBHC_PLUG_DETECT_CTL, + WCD9335_MBHC_HSDET_PULLUP_CTL_MASK, + WCD9335_MBHC_HSDET_PULLUP_CTL_1_2P0_UA); + + if (wcd->hphl_jack_type_normally_open) + plug_type |= WCD9335_MBHC_HPHL_PLUG_TYPE_NO; + + if (wcd->gnd_jack_type_normally_open) + plug_type |= WCD9335_MBHC_GND_PLUG_TYPE_NO; + + snd_soc_component_write(wcd->component, WCD9335_ANA_MBHC_MECH, + plug_type | + WCD9335_MBHC_L_DET_EN | + WCD9335_MBHC_HSL_PULLUP_COMP_EN | + WCD9335_MBHC_HPHL_100K_TO_GND_EN); + + /* Insertion debounce set to 96ms */ + snd_soc_component_write(wcd->component, + WCD9335_MBHC_PLUG_DETECT_CTL, + WCD9335_MBHC_DBNC_TIMER_INSREM_DBNC_T_96_MS| + WCD9335_MBHC_HSDET_PULLUP_CTL_1_2P0_UA); + /* Button Debounce set to 16ms */ + snd_soc_component_update_bits(wcd->component, WCD9335_MBHC_CTL_1, + WCD9335_MBHC_BTN_DBNC_MASK, + WCD9335_MBHC_BTN_DBNC_T_16_MS); + + /* enable bias distribution control */ + snd_soc_component_update_bits(comp, WCD9335_ANA_MBHC_ELECT, + WCD9335_ANA_MBHC_BIAS_EN_MASK, + WCD9335_ANA_MBHC_BIAS_EN); + + snd_soc_component_update_bits(wcd->component, + WCD9335_ANA_MBHC_ELECT, + WCD9335_ANA_MBHC_BD_ISRC_CTL_MASK, + WCD9335_ANA_MBHC_BD_ISRC_100UA); + + /* enable MBHC clock */ + snd_soc_component_update_bits(wcd->component, WCD9335_MBHC_CTL_1, + WCD9335_MBHC_CTL_RCO_EN_MASK, + WCD9335_MBHC_CTL_RCO_EN); + + snd_soc_component_update_bits(wcd->component, WCD9335_MBHC_CTL_2, + WCD9335_MBHC_HS_VREF_CTL_MASK, + WCD9335_MBHC_HS_VREF_1P5_V); + + /* program HS_VREF value */ + wcd9335_program_btn_threshold(wcd); + /* Start FSM */ + snd_soc_component_update_bits(wcd->component, WCD9335_ANA_MBHC_ELECT, + BIT(7), BIT(7)); + + wcd->mbhc_btn0_released = false; + wcd->detect_accessory_type = true; +} + static struct wcd9335_irq wcd9335_irqs[] = { { .irq = WCD9335_IRQ_SLIMBUS, .handler = wcd9335_slimbus_irq, .name = "SLIM Slave", + }, { + .irq = WCD9335_IRQ_MBHC_SW_DET, + .handler = wcd9335_mbhc_sw_irq, + .name = "Headset Mech Insert Removal", + }, { + .irq = WCD9335_IRQ_MBHC_BUTTON_PRESS_DET, + .handler = wcd9335_mbhc_btn_press_irq, + .name = "Headset Button Press", + }, { + .irq = WCD9335_IRQ_MBHC_BUTTON_RELEASE_DET, + .handler = wcd9335_mbhc_bt_rel_irq, + .name = "Headset Button Release", }, };
@@ -4859,6 +5083,7 @@ static void wcd9335_codec_init(struct snd_soc_component *component) wcd9335_codec_reg_init[i].val);
wcd9335_enable_efuse_sensing(component); + wcd9335_mbhc_initialise(wcd); }
static int wcd9335_codec_probe(struct snd_soc_component *component) @@ -4914,10 +5139,21 @@ static int wcd9335_codec_set_sysclk(struct snd_soc_component *comp, return clk_set_rate(wcd->mclk, freq); }
+static int wcd9335_codec_set_jack(struct snd_soc_component *comp, + struct snd_soc_jack *jack, void *data) +{ + struct wcd9335_codec *wcd = dev_get_drvdata(comp->dev); + + wcd->jack = jack; + + return 0; +} + static const struct snd_soc_component_driver wcd9335_component_drv = { .probe = wcd9335_codec_probe, .remove = wcd9335_codec_remove, .set_sysclk = wcd9335_codec_set_sysclk, + .set_jack = wcd9335_codec_set_jack, .controls = wcd9335_snd_controls, .num_controls = ARRAY_SIZE(wcd9335_snd_controls), .dapm_widgets = wcd9335_dapm_widgets, @@ -4926,6 +5162,33 @@ static const struct snd_soc_component_driver wcd9335_component_drv = { .num_dapm_routes = ARRAY_SIZE(wcd9335_audio_map), };
+static void of_parse_mbhc_data(struct device *dev, struct wcd9335_codec *wcd) +{ + int rval; + + if (of_property_read_bool(dev->of_node, + "qcom,hphl-jack-type-normally-open")) + wcd->hphl_jack_type_normally_open = true; + else + wcd->hphl_jack_type_normally_open = false; + + if (of_property_read_bool(dev->of_node, + "qcom,gnd-jack-type-normally-open")) + wcd->gnd_jack_type_normally_open = true; + else + wcd->gnd_jack_type_normally_open = false; + + wcd->mbhc_btn_enabled = true; + rval = of_property_read_u32_array(dev->of_node, + "qcom,mbhc-vthreshold", + &wcd->vref_btn[0], + WCD9335_MBHC_MAX_BUTTONS); + if (rval < 0) { + wcd->mbhc_btn_enabled = false; + dev_err(dev, "MBHC btn detection disabled\n"); + } +} + static int wcd9335_probe(struct platform_device *pdev) { struct wcd9335 *pdata = dev_get_drvdata(pdev->dev.parent); @@ -4937,6 +5200,7 @@ static int wcd9335_probe(struct platform_device *pdev) return -ENOMEM;
dev_set_drvdata(dev, wcd); + of_parse_mbhc_data(pdev->dev.parent, wcd);
memcpy(wcd->rx_chs, wcd9335_rx_chs, sizeof(wcd9335_rx_chs)); memcpy(wcd->tx_chs, wcd9335_tx_chs, sizeof(wcd9335_tx_chs));