diff options
Diffstat (limited to 'sound/soc/codecs/wm8903.c')
-rw-r--r-- | sound/soc/codecs/wm8903.c | 316 |
1 files changed, 162 insertions, 154 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c index 86b8a29..73f1c8d 100644 --- a/sound/soc/codecs/wm8903.c +++ b/sound/soc/codecs/wm8903.c @@ -1,8 +1,8 @@ /* * wm8903.c -- WM8903 ALSA SoC Audio driver * - * Copyright 2008 Wolfson Microelectronics - * Copyright 2011 NVIDIA, Inc. + * Copyright 2008-12 Wolfson Microelectronics + * Copyright 2011-2012 NVIDIA, Inc. * * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> * @@ -116,6 +116,7 @@ static const struct reg_default wm8903_reg_defaults[] = { struct wm8903_priv { struct wm8903_platform_data *pdata; + struct device *dev; struct snd_soc_codec *codec; struct regmap *regmap; @@ -1635,17 +1636,27 @@ EXPORT_SYMBOL_GPL(wm8903_mic_detect); static irqreturn_t wm8903_irq(int irq, void *data) { - struct snd_soc_codec *codec = data; - struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec); - int mic_report; - int int_pol; - int int_val = 0; - int mask = ~snd_soc_read(codec, WM8903_INTERRUPT_STATUS_1_MASK); + struct wm8903_priv *wm8903 = data; + int mic_report, ret; + unsigned int int_val, mask, int_pol; - int_val = snd_soc_read(codec, WM8903_INTERRUPT_STATUS_1) & mask; + ret = regmap_read(wm8903->regmap, WM8903_INTERRUPT_STATUS_1_MASK, + &mask); + if (ret != 0) { + dev_err(wm8903->dev, "Failed to read IRQ mask: %d\n", ret); + return IRQ_NONE; + } + + ret = regmap_read(wm8903->regmap, WM8903_INTERRUPT_STATUS_1, &int_val); + if (ret != 0) { + dev_err(wm8903->dev, "Failed to read IRQ status: %d\n", ret); + return IRQ_NONE; + } + + int_val &= ~mask; if (int_val & WM8903_WSEQ_BUSY_EINT) { - dev_warn(codec->dev, "Write sequencer done\n"); + dev_warn(wm8903->dev, "Write sequencer done\n"); } /* @@ -1656,22 +1667,28 @@ static irqreturn_t wm8903_irq(int irq, void *data) * the polarity register. */ mic_report = wm8903->mic_last_report; - int_pol = snd_soc_read(codec, WM8903_INTERRUPT_POLARITY_1); + ret = regmap_read(wm8903->regmap, WM8903_INTERRUPT_POLARITY_1, + &int_pol); + if (ret != 0) { + dev_err(wm8903->dev, "Failed to read interrupt polarity: %d\n", + ret); + return IRQ_HANDLED; + } #ifndef CONFIG_SND_SOC_WM8903_MODULE if (int_val & (WM8903_MICSHRT_EINT | WM8903_MICDET_EINT)) - trace_snd_soc_jack_irq(dev_name(codec->dev)); + trace_snd_soc_jack_irq(dev_name(wm8903->dev)); #endif if (int_val & WM8903_MICSHRT_EINT) { - dev_dbg(codec->dev, "Microphone short (pol=%x)\n", int_pol); + dev_dbg(wm8903->dev, "Microphone short (pol=%x)\n", int_pol); mic_report ^= wm8903->mic_short; int_pol ^= WM8903_MICSHRT_INV; } if (int_val & WM8903_MICDET_EINT) { - dev_dbg(codec->dev, "Microphone detect (pol=%x)\n", int_pol); + dev_dbg(wm8903->dev, "Microphone detect (pol=%x)\n", int_pol); mic_report ^= wm8903->mic_det; int_pol ^= WM8903_MICDET_INV; @@ -1679,8 +1696,8 @@ static irqreturn_t wm8903_irq(int irq, void *data) msleep(wm8903->mic_delay); } - snd_soc_update_bits(codec, WM8903_INTERRUPT_POLARITY_1, - WM8903_MICSHRT_INV | WM8903_MICDET_INV, int_pol); + regmap_update_bits(wm8903->regmap, WM8903_INTERRUPT_POLARITY_1, + WM8903_MICSHRT_INV | WM8903_MICDET_INV, int_pol); snd_soc_jack_report(wm8903->mic_jack, mic_report, wm8903->mic_short | wm8903->mic_det); @@ -1774,7 +1791,6 @@ static int wm8903_gpio_request(struct gpio_chip *chip, unsigned offset) static int wm8903_gpio_direction_in(struct gpio_chip *chip, unsigned offset) { struct wm8903_priv *wm8903 = gpio_to_wm8903(chip); - struct snd_soc_codec *codec = wm8903->codec; unsigned int mask, val; int ret; @@ -1782,8 +1798,8 @@ static int wm8903_gpio_direction_in(struct gpio_chip *chip, unsigned offset) val = (WM8903_GPn_FN_GPIO_INPUT << WM8903_GP1_FN_SHIFT) | WM8903_GP1_DIR; - ret = snd_soc_update_bits(codec, WM8903_GPIO_CONTROL_1 + offset, - mask, val); + ret = regmap_update_bits(wm8903->regmap, + WM8903_GPIO_CONTROL_1 + offset, mask, val); if (ret < 0) return ret; @@ -1793,10 +1809,9 @@ static int wm8903_gpio_direction_in(struct gpio_chip *chip, unsigned offset) static int wm8903_gpio_get(struct gpio_chip *chip, unsigned offset) { struct wm8903_priv *wm8903 = gpio_to_wm8903(chip); - struct snd_soc_codec *codec = wm8903->codec; - int reg; + unsigned int reg; - reg = snd_soc_read(codec, WM8903_GPIO_CONTROL_1 + offset); + regmap_read(wm8903->regmap, WM8903_GPIO_CONTROL_1 + offset, ®); return (reg & WM8903_GP1_LVL_MASK) >> WM8903_GP1_LVL_SHIFT; } @@ -1805,7 +1820,6 @@ static int wm8903_gpio_direction_out(struct gpio_chip *chip, unsigned offset, int value) { struct wm8903_priv *wm8903 = gpio_to_wm8903(chip); - struct snd_soc_codec *codec = wm8903->codec; unsigned int mask, val; int ret; @@ -1813,8 +1827,8 @@ static int wm8903_gpio_direction_out(struct gpio_chip *chip, val = (WM8903_GPn_FN_GPIO_OUTPUT << WM8903_GP1_FN_SHIFT) | (value << WM8903_GP2_LVL_SHIFT); - ret = snd_soc_update_bits(codec, WM8903_GPIO_CONTROL_1 + offset, - mask, val); + ret = regmap_update_bits(wm8903->regmap, + WM8903_GPIO_CONTROL_1 + offset, mask, val); if (ret < 0) return ret; @@ -1824,11 +1838,10 @@ static int wm8903_gpio_direction_out(struct gpio_chip *chip, static void wm8903_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { struct wm8903_priv *wm8903 = gpio_to_wm8903(chip); - struct snd_soc_codec *codec = wm8903->codec; - snd_soc_update_bits(codec, WM8903_GPIO_CONTROL_1 + offset, - WM8903_GP1_LVL_MASK, - !!value << WM8903_GP1_LVL_SHIFT); + regmap_update_bits(wm8903->regmap, WM8903_GPIO_CONTROL_1 + offset, + WM8903_GP1_LVL_MASK, + !!value << WM8903_GP1_LVL_SHIFT); } static struct gpio_chip wm8903_template_chip = { @@ -1842,15 +1855,14 @@ static struct gpio_chip wm8903_template_chip = { .can_sleep = 1, }; -static void wm8903_init_gpio(struct snd_soc_codec *codec) +static void wm8903_init_gpio(struct wm8903_priv *wm8903) { - struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec); struct wm8903_platform_data *pdata = wm8903->pdata; int ret; wm8903->gpio_chip = wm8903_template_chip; wm8903->gpio_chip.ngpio = WM8903_NUM_GPIO; - wm8903->gpio_chip.dev = codec->dev; + wm8903->gpio_chip.dev = wm8903->dev; if (pdata->gpio_base) wm8903->gpio_chip.base = pdata->gpio_base; @@ -1859,24 +1871,23 @@ static void wm8903_init_gpio(struct snd_soc_codec *codec) ret = gpiochip_add(&wm8903->gpio_chip); if (ret != 0) - dev_err(codec->dev, "Failed to add GPIOs: %d\n", ret); + dev_err(wm8903->dev, "Failed to add GPIOs: %d\n", ret); } -static void wm8903_free_gpio(struct snd_soc_codec *codec) +static void wm8903_free_gpio(struct wm8903_priv *wm8903) { - struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec); int ret; ret = gpiochip_remove(&wm8903->gpio_chip); if (ret != 0) - dev_err(codec->dev, "Failed to remove GPIOs: %d\n", ret); + dev_err(wm8903->dev, "Failed to remove GPIOs: %d\n", ret); } #else -static void wm8903_init_gpio(struct snd_soc_codec *codec) +static void wm8903_init_gpio(struct wm8903_priv *wm8903) { } -static void wm8903_free_gpio(struct snd_soc_codec *codec) +static void wm8903_free_gpio(struct wm8903_priv *wm8903) { } #endif @@ -1884,11 +1895,7 @@ static void wm8903_free_gpio(struct snd_soc_codec *codec) static int wm8903_probe(struct snd_soc_codec *codec) { struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec); - struct wm8903_platform_data *pdata = wm8903->pdata; - int ret, i; - int trigger, irq_pol; - u16 val; - bool mic_gpio = false; + int ret; wm8903->codec = codec; codec->control_data = wm8903->regmap; @@ -1899,121 +1906,16 @@ static int wm8903_probe(struct snd_soc_codec *codec) return ret; } - /* Set up GPIOs, detect if any are MIC detect outputs */ - for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) { - if ((!pdata->gpio_cfg[i]) || - (pdata->gpio_cfg[i] > WM8903_GPIO_CONFIG_ZERO)) - continue; - - snd_soc_write(codec, WM8903_GPIO_CONTROL_1 + i, - pdata->gpio_cfg[i] & 0x7fff); - - val = (pdata->gpio_cfg[i] & WM8903_GP1_FN_MASK) - >> WM8903_GP1_FN_SHIFT; - - switch (val) { - case WM8903_GPn_FN_MICBIAS_CURRENT_DETECT: - case WM8903_GPn_FN_MICBIAS_SHORT_DETECT: - mic_gpio = true; - break; - default: - break; - } - } - - /* Set up microphone detection */ - snd_soc_write(codec, WM8903_MIC_BIAS_CONTROL_0, - pdata->micdet_cfg); - - /* Microphone detection needs the WSEQ clock */ - if (pdata->micdet_cfg) - snd_soc_update_bits(codec, WM8903_WRITE_SEQUENCER_0, - WM8903_WSEQ_ENA, WM8903_WSEQ_ENA); - - /* If microphone detection is enabled by pdata but - * detected via IRQ then interrupts can be lost before - * the machine driver has set up microphone detection - * IRQs as the IRQs are clear on read. The detection - * will be enabled when the machine driver configures. - */ - WARN_ON(!mic_gpio && (pdata->micdet_cfg & WM8903_MICDET_ENA)); - - wm8903->mic_delay = pdata->micdet_delay; - - if (wm8903->irq) { - if (pdata->irq_active_low) { - trigger = IRQF_TRIGGER_LOW; - irq_pol = WM8903_IRQ_POL; - } else { - trigger = IRQF_TRIGGER_HIGH; - irq_pol = 0; - } - - snd_soc_update_bits(codec, WM8903_INTERRUPT_CONTROL, - WM8903_IRQ_POL, irq_pol); - - ret = request_threaded_irq(wm8903->irq, NULL, wm8903_irq, - trigger | IRQF_ONESHOT, - "wm8903", codec); - if (ret != 0) { - dev_err(codec->dev, "Failed to request IRQ: %d\n", - ret); - return ret; - } - - /* Enable write sequencer interrupts */ - snd_soc_update_bits(codec, WM8903_INTERRUPT_STATUS_1_MASK, - WM8903_IM_WSEQ_BUSY_EINT, 0); - } - /* power on device */ wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY); - /* Latch volume update bits */ - val = snd_soc_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT); - val |= WM8903_ADCVU; - snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val); - snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val); - - val = snd_soc_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT); - val |= WM8903_DACVU; - snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val); - snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val); - - val = snd_soc_read(codec, WM8903_ANALOGUE_OUT1_LEFT); - val |= WM8903_HPOUTVU; - snd_soc_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val); - snd_soc_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val); - - val = snd_soc_read(codec, WM8903_ANALOGUE_OUT2_LEFT); - val |= WM8903_LINEOUTVU; - snd_soc_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val); - snd_soc_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val); - - val = snd_soc_read(codec, WM8903_ANALOGUE_OUT3_LEFT); - val |= WM8903_SPKVU; - snd_soc_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val); - snd_soc_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val); - - /* Enable DAC soft mute by default */ - snd_soc_update_bits(codec, WM8903_DAC_DIGITAL_1, - WM8903_DAC_MUTEMODE | WM8903_DAC_MUTE, - WM8903_DAC_MUTEMODE | WM8903_DAC_MUTE); - - wm8903_init_gpio(codec); - return ret; } /* power down chip */ static int wm8903_remove(struct snd_soc_codec *codec) { - struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec); - - wm8903_free_gpio(codec); wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF); - if (wm8903->irq) - free_irq(wm8903->irq, codec); return 0; } @@ -2123,15 +2025,18 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, { struct wm8903_platform_data *pdata = dev_get_platdata(&i2c->dev); struct wm8903_priv *wm8903; - unsigned int val; - int ret; + int trigger; + bool mic_gpio = false; + unsigned int val, irq_pol; + int ret, i; wm8903 = devm_kzalloc(&i2c->dev, sizeof(struct wm8903_priv), GFP_KERNEL); if (wm8903 == NULL) return -ENOMEM; + wm8903->dev = &i2c->dev; - wm8903->regmap = regmap_init_i2c(i2c, &wm8903_regmap); + wm8903->regmap = devm_regmap_init_i2c(i2c, &wm8903_regmap); if (IS_ERR(wm8903->regmap)) { ret = PTR_ERR(wm8903->regmap); dev_err(&i2c->dev, "Failed to allocate register map: %d\n", @@ -2140,7 +2045,6 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, } i2c_set_clientdata(i2c, wm8903); - wm8903->irq = i2c->irq; /* If no platform data was supplied, create storage for defaults */ if (pdata) { @@ -2167,6 +2071,8 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, } } + pdata = wm8903->pdata; + ret = regmap_read(wm8903->regmap, WM8903_SW_RESET_AND_ID, &val); if (ret != 0) { dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret); @@ -2189,6 +2095,107 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, /* Reset the device */ regmap_write(wm8903->regmap, WM8903_SW_RESET_AND_ID, 0x8903); + wm8903_init_gpio(wm8903); + + /* Set up GPIO pin state, detect if any are MIC detect outputs */ + for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) { + if ((!pdata->gpio_cfg[i]) || + (pdata->gpio_cfg[i] > WM8903_GPIO_CONFIG_ZERO)) + continue; + + regmap_write(wm8903->regmap, WM8903_GPIO_CONTROL_1 + i, + pdata->gpio_cfg[i] & 0x7fff); + + val = (pdata->gpio_cfg[i] & WM8903_GP1_FN_MASK) + >> WM8903_GP1_FN_SHIFT; + + switch (val) { + case WM8903_GPn_FN_MICBIAS_CURRENT_DETECT: + case WM8903_GPn_FN_MICBIAS_SHORT_DETECT: + mic_gpio = true; + break; + default: + break; + } + } + + /* Set up microphone detection */ + regmap_write(wm8903->regmap, WM8903_MIC_BIAS_CONTROL_0, + pdata->micdet_cfg); + + /* Microphone detection needs the WSEQ clock */ + if (pdata->micdet_cfg) + regmap_update_bits(wm8903->regmap, WM8903_WRITE_SEQUENCER_0, + WM8903_WSEQ_ENA, WM8903_WSEQ_ENA); + + /* If microphone detection is enabled by pdata but + * detected via IRQ then interrupts can be lost before + * the machine driver has set up microphone detection + * IRQs as the IRQs are clear on read. The detection + * will be enabled when the machine driver configures. + */ + WARN_ON(!mic_gpio && (pdata->micdet_cfg & WM8903_MICDET_ENA)); + + wm8903->mic_delay = pdata->micdet_delay; + + if (i2c->irq) { + if (pdata->irq_active_low) { + trigger = IRQF_TRIGGER_LOW; + irq_pol = WM8903_IRQ_POL; + } else { + trigger = IRQF_TRIGGER_HIGH; + irq_pol = 0; + } + + regmap_update_bits(wm8903->regmap, WM8903_INTERRUPT_CONTROL, + WM8903_IRQ_POL, irq_pol); + + ret = request_threaded_irq(i2c->irq, NULL, wm8903_irq, + trigger | IRQF_ONESHOT, + "wm8903", wm8903); + if (ret != 0) { + dev_err(wm8903->dev, "Failed to request IRQ: %d\n", + ret); + return ret; + } + + /* Enable write sequencer interrupts */ + regmap_update_bits(wm8903->regmap, + WM8903_INTERRUPT_STATUS_1_MASK, + WM8903_IM_WSEQ_BUSY_EINT, 0); + } + + /* Latch volume update bits */ + regmap_update_bits(wm8903->regmap, WM8903_ADC_DIGITAL_VOLUME_LEFT, + WM8903_ADCVU, WM8903_ADCVU); + regmap_update_bits(wm8903->regmap, WM8903_ADC_DIGITAL_VOLUME_RIGHT, + WM8903_ADCVU, WM8903_ADCVU); + + regmap_update_bits(wm8903->regmap, WM8903_DAC_DIGITAL_VOLUME_LEFT, + WM8903_DACVU, WM8903_DACVU); + regmap_update_bits(wm8903->regmap, WM8903_DAC_DIGITAL_VOLUME_RIGHT, + WM8903_DACVU, WM8903_DACVU); + + regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT1_LEFT, + WM8903_HPOUTVU, WM8903_HPOUTVU); + regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT1_RIGHT, + WM8903_HPOUTVU, WM8903_HPOUTVU); + + regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT2_LEFT, + WM8903_LINEOUTVU, WM8903_LINEOUTVU); + regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT2_RIGHT, + WM8903_LINEOUTVU, WM8903_LINEOUTVU); + + regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT3_LEFT, + WM8903_SPKVU, WM8903_SPKVU); + regmap_update_bits(wm8903->regmap, WM8903_ANALOGUE_OUT3_RIGHT, + WM8903_SPKVU, WM8903_SPKVU); + + /* Enable DAC soft mute by default */ + regmap_update_bits(wm8903->regmap, WM8903_DAC_DIGITAL_1, + WM8903_DAC_MUTEMODE | WM8903_DAC_MUTE, + WM8903_DAC_MUTEMODE | WM8903_DAC_MUTE); + ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm8903, &wm8903_dai, 1); if (ret != 0) @@ -2196,7 +2203,6 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, return 0; err: - regmap_exit(wm8903->regmap); return ret; } @@ -2204,7 +2210,9 @@ static __devexit int wm8903_i2c_remove(struct i2c_client *client) { struct wm8903_priv *wm8903 = i2c_get_clientdata(client); - regmap_exit(wm8903->regmap); + if (client->irq) + free_irq(client->irq, wm8903); + wm8903_free_gpio(wm8903); snd_soc_unregister_codec(&client->dev); return 0; |