C++ regulator_bulk_enable函数代码示例

static int wm8994_device_resume(struct device *dev)
{
	struct wm8994 *wm8994 = dev_get_drvdata(dev);
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(wm8994_main_supplies),
				    wm8994->supplies);
	if (ret != 0) {
		dev_err(dev, "Failed to enable supplies: %d\n", ret);
		return ret;
	}

	ret = wm8994_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK,
			   WM8994_NUM_IRQ_REGS * 2, &wm8994->irq_masks_cur);
	if (ret < 0)
		dev_err(dev, "Failed to restore interrupt masks: %d\n", ret);

	ret = wm8994_write(wm8994, WM8994_LDO_1, WM8994_NUM_LDO_REGS * 2,
			   &wm8994->ldo_regs);
	if (ret < 0)
		dev_err(dev, "Failed to restore LDO registers: %d\n", ret);

	ret = wm8994_write(wm8994, WM8994_GPIO_1, WM8994_NUM_GPIO_REGS * 2,
			   &wm8994->gpio_regs);
	if (ret < 0)
		dev_err(dev, "Failed to restore GPIO registers: %d\n", ret);

	return 0;
}

static int wm8523_set_bias_level(struct snd_soc_codec *codec,
				 enum snd_soc_bias_level level)
{
	struct wm8523_priv *wm8523 = snd_soc_codec_get_drvdata(codec);
	u16 *reg_cache = codec->reg_cache;
	int ret, i;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;

	case SND_SOC_BIAS_PREPARE:
		/* Full power on */
		snd_soc_update_bits(codec, WM8523_PSCTRL1,
				    WM8523_SYS_ENA_MASK, 3);
		break;

	case SND_SOC_BIAS_STANDBY:
		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
			ret = regulator_bulk_enable(ARRAY_SIZE(wm8523->supplies),
						    wm8523->supplies);
			if (ret != 0) {
				dev_err(codec->dev,
					"Failed to enable supplies: %d\n",
					ret);
				return ret;
			}

			/* Initial power up */
			snd_soc_update_bits(codec, WM8523_PSCTRL1,
					    WM8523_SYS_ENA_MASK, 1);

			/* Sync back default/cached values */
			for (i = WM8523_AIF_CTRL1;
			     i < WM8523_MAX_REGISTER; i++)
				snd_soc_write(codec, i, reg_cache[i]);


			msleep(100);
		}

		/* Power up to mute */
		snd_soc_update_bits(codec, WM8523_PSCTRL1,
				    WM8523_SYS_ENA_MASK, 2);

		break;

	case SND_SOC_BIAS_OFF:
		/* The chip runs through the power down sequence for us. */
		snd_soc_update_bits(codec, WM8523_PSCTRL1,
				    WM8523_SYS_ENA_MASK, 0);
		msleep(100);

		regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies),
				       wm8523->supplies);
		break;
	}
	codec->dapm.bias_level = level;
	return 0;
}

static int wm8994_resume(struct device *dev)
{
	struct wm8994 *wm8994 = dev_get_drvdata(dev);
	int ret;

	/* We may have lied to the PM core about suspending */
	if (!wm8994->suspended)
		return 0;

	ret = regulator_bulk_enable(wm8994->num_supplies,
				    wm8994->supplies);
	if (ret != 0) {
		dev_err(dev, "Failed to enable supplies: %d\n", ret);
		return ret;
	}

	ret = wm8994_write(wm8994, WM8994_INTERRUPT_STATUS_1_MASK,
			   WM8994_NUM_IRQ_REGS * 2, &wm8994->irq_masks_cur);
	if (ret < 0)
		dev_err(dev, "Failed to restore interrupt masks: %d\n", ret);

	ret = wm8994_write(wm8994, WM8994_LDO_1, WM8994_NUM_LDO_REGS * 2,
			   &wm8994->ldo_regs);
	if (ret < 0)
		dev_err(dev, "Failed to restore LDO registers: %d\n", ret);

	ret = wm8994_write(wm8994, WM8994_GPIO_1, WM8994_NUM_GPIO_REGS * 2,
			   &wm8994->gpio_regs);
	if (ret < 0)
		dev_err(dev, "Failed to restore GPIO registers: %d\n", ret);

	wm8994->suspended = false;

	return 0;
}

static int ft5x06_ts_power_on(bool on)
{
	int rc;

	rc = regulator_bulk_get(NULL, ARRAY_SIZE(regs_ft5x06), regs_ft5x06);
	if (rc) {
		printk("%s: could not get regulators: %d\n",
				__func__, rc);
	}

	rc = regulator_bulk_set_voltage(ARRAY_SIZE(regs_ft5x06), regs_ft5x06);
	if (rc) {
		printk("%s: could not set voltages: %d\n",
				__func__, rc);
	}

	rc = on ?
		regulator_bulk_enable(ARRAY_SIZE(regs_ft5x06), regs_ft5x06) :
		regulator_bulk_disable(ARRAY_SIZE(regs_ft5x06), regs_ft5x06);

	if (rc)
		pr_err("%s: could not %sable regulators: %d\n",
				__func__, on ? "en" : "dis", rc);
	else
		msleep(50);

	return rc;
}

static int cs4270_soc_resume(struct platform_device *pdev)
{
	struct snd_soc_codec *codec = cs4270_codec;
	struct cs4270_private *cs4270 = codec->private_data;
	struct i2c_client *i2c_client = codec->control_data;
	int reg;

	regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),
			      cs4270->supplies);

	/* In case the device was put to hard reset during sleep, we need to
	 * wait 500ns here before any I2C communication. */
	ndelay(500);

	/* first restore the entire register cache ... */
	for (reg = CS4270_FIRSTREG; reg <= CS4270_LASTREG; reg++) {
		u8 val = snd_soc_read(codec, reg);

		if (i2c_smbus_write_byte_data(i2c_client, reg, val)) {
			dev_err(codec->dev, "i2c write failed\n");
			return -EIO;
		}
	}

	/* ... then disable the power-down bits */
	reg = snd_soc_read(codec, CS4270_PWRCTL);
	reg &= ~CS4270_PWRCTL_PDN_ALL;

	return snd_soc_write(codec, CS4270_PWRCTL, reg);
}

static void twl6040_vibra_enable(struct vibra_info *info)
{
	struct twl6040 *twl6040 = info->twl6040;
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
	if (ret) {
		dev_err(info->dev, "failed to enable regulators %d\n", ret);
		return;
	}

	twl6040_power(info->twl6040, 1);
	if (twl6040_get_revid(twl6040) <= TWL6040_REV_ES1_1) {
		/*
                                                        
                                                      
                          
   */
		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
				  TWL6040_VIBENA | TWL6040_VIBCTRL);
		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
				  TWL6040_VIBENA | TWL6040_VIBCTRL);
		usleep_range(3000, 3500);
	}

	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
			  TWL6040_VIBENA);
	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
			  TWL6040_VIBENA);

	info->enabled = true;
}

static int msm_fb_lcdc_power_save(int on)
{
	int rc = 0;
	/* Doing the init of the LCDC GPIOs very late as they are from
		an I2C-controlled IO Expander */
	lcdc_toshiba_gpio_init();

	if (lcdc_gpio_initialized) {
		gpio_set_value_cansleep(GPIO_DISPLAY_PWR_EN, on);
		/*++ Huize - 20120927 Modify for identifying what the code is used by customization ++*/
		#ifndef DISPLAY_CUSTOMIZATION
		gpio_set_value_cansleep(GPIO_BACKLIGHT_EN, on);
		#endif
		/*-- Huize - 20120927 Modify for identifying what the code is used by customization --*/

		rc = on ? regulator_bulk_enable(
				ARRAY_SIZE(regs_lcdc), regs_lcdc) :
			  regulator_bulk_disable(
				ARRAY_SIZE(regs_lcdc), regs_lcdc);

		if (rc)
			pr_err("%s: could not %sable regulators: %d\n",
					__func__, on ? "en" : "dis", rc);
	}

	return rc;
}

static int aic31xx_set_power(struct snd_soc_codec *codec, int power)
{
	struct aic31xx_priv *aic31xx = snd_soc_codec_get_drvdata(codec);
	int ret;

	dev_dbg(codec->dev, "## %s: %d\n", __func__, power);
	if (power) {
		ret = regulator_bulk_enable(ARRAY_SIZE(aic31xx->supplies),
					    aic31xx->supplies);
		if (ret)
			return ret;
		aic31xx->power = 1;

		if (gpio_is_valid(aic31xx->pdata.gpio_reset)) {
			gpio_set_value(aic31xx->pdata.gpio_reset, 1);
			mdelay(10);
		}
	} else {
		/*
		 * Do soft reset to this codec instance in order to clear
		 * possible VDD leakage currents in case the supply regulators
		 * remain on
		 */
		snd_soc_write(codec, AIC31XX_RESET, 0x01);
		if (gpio_is_valid(aic31xx->pdata.gpio_reset))
			gpio_set_value(aic31xx->pdata.gpio_reset, 0);
		aic31xx->power = 0;
		ret = regulator_bulk_disable(ARRAY_SIZE(aic31xx->supplies),
					     aic31xx->supplies);
	}

	return ret;
}

/**
 * cs4270_probe - ASoC probe function
 * @pdev: platform device
 *
 * This function is called when ASoC has all the pieces it needs to
 * instantiate a sound driver.
 */
static int cs4270_probe(struct snd_soc_codec *codec)
{
	struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
	int ret;

	/* Disable auto-mute.  This feature appears to be buggy.  In some
	 * situations, auto-mute will not deactivate when it should, so we want
	 * this feature disabled by default.  An application (e.g. alsactl) can
	 * re-enabled it by using the controls.
	 */
	ret = snd_soc_update_bits(codec, CS4270_MUTE, CS4270_MUTE_AUTO, 0);
	if (ret < 0) {
		dev_err(codec->dev, "i2c write failed\n");
		return ret;
	}

	/* Disable automatic volume control.  The hardware enables, and it
	 * causes volume change commands to be delayed, sometimes until after
	 * playback has started.  An application (e.g. alsactl) can
	 * re-enabled it by using the controls.
	 */
	ret = snd_soc_update_bits(codec, CS4270_TRANS,
		CS4270_TRANS_SOFT | CS4270_TRANS_ZERO, 0);
	if (ret < 0) {
		dev_err(codec->dev, "i2c write failed\n");
		return ret;
	}

	ret = regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),
				    cs4270->supplies);

	return ret;
}

static int __dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg)
{
    struct platform_device *pdev = to_platform_device(hsotg->dev);
    int ret;

    ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
                                hsotg->supplies);
    if (ret)
        return ret;

    ret = clk_prepare_enable(hsotg->clk);
    if (ret)
        return ret;

    if (hsotg->uphy)
        ret = usb_phy_init(hsotg->uphy);
    else if (hsotg->plat && hsotg->plat->phy_init)
        ret = hsotg->plat->phy_init(pdev, hsotg->plat->phy_type);
    else {
        ret = phy_power_on(hsotg->phy);
        if (ret == 0)
            ret = phy_init(hsotg->phy);
    }

    return ret;
}

static int es8328_codec_probe(struct snd_soc_codec *codec)
{
	struct es8328_priv *es8328;
	int ret;

	es8328 = snd_soc_codec_get_drvdata(codec);

	ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
					es8328->supplies);
	if (ret) {
		dev_err(codec->dev, "unable to enable regulators\n");
		return ret;
	}

	/* Setup clocks */
	es8328->clk = devm_clk_get(codec->dev, NULL);
	if (IS_ERR(es8328->clk)) {
		dev_err(codec->dev, "codec clock missing or invalid\n");
		ret = PTR_ERR(es8328->clk);
		goto clk_fail;
	}

	ret = clk_prepare_enable(es8328->clk);
	if (ret) {
		dev_err(codec->dev, "unable to prepare codec clk\n");
		goto clk_fail;
	}

	return 0;

clk_fail:
	regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
			       es8328->supplies);
	return ret;
}

static void twl6040_vibra_enable(struct vibra_info *info)
{
	struct twl6040 *twl6040 = info->twl6040;
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(info->supplies), info->supplies);
	if (ret) {
		dev_err(info->dev, "failed to enable regulators %d\n", ret);
		return;
	}

	twl6040_power(info->twl6040, 1);
	if (twl6040_get_revid(twl6040) <= TWL6040_REV_ES1_1) {
		/*
		 * ERRATA: Disable overcurrent protection for at least
		 * 3ms when enabling vibrator drivers to avoid false
		 * overcurrent detection
		 */
		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
				  TWL6040_VIBENA | TWL6040_VIBCTRL);
		twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
				  TWL6040_VIBENA | TWL6040_VIBCTRL);
		usleep_range(3000, 3500);
	}

	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLL,
			  TWL6040_VIBENA);
	twl6040_reg_write(twl6040, TWL6040_REG_VIBCTLR,
			  TWL6040_VIBENA);

	info->enabled = true;
}

static int aic31xx_power_on(struct snd_soc_codec *codec)
{
	struct aic31xx_priv *aic31xx = snd_soc_codec_get_drvdata(codec);
	int ret = 0;

	ret = regulator_bulk_enable(ARRAY_SIZE(aic31xx->supplies),
				    aic31xx->supplies);
	if (ret)
		return ret;

	if (gpio_is_valid(aic31xx->pdata.gpio_reset)) {
		gpio_set_value(aic31xx->pdata.gpio_reset, 1);
		udelay(100);
	}
	regcache_cache_only(aic31xx->regmap, false);
	ret = regcache_sync(aic31xx->regmap);
	if (ret != 0) {
		dev_err(codec->dev,
			"Failed to restore cache: %d\n", ret);
		regcache_cache_only(aic31xx->regmap, true);
		regulator_bulk_disable(ARRAY_SIZE(aic31xx->supplies),
				       aic31xx->supplies);
		return ret;
	}
	return 0;
}

static int mpu3050_power_up(struct mpu3050 *mpu3050)
{
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(mpu3050->regs), mpu3050->regs);
	if (ret) {
		dev_err(mpu3050->dev, "cannot enable regulators\n");
		return ret;
	}
	/*
	 * 20-100 ms start-up time for register read/write according to
	 * the datasheet, be on the safe side and wait 200 ms.
	 */
	msleep(200);

	/* Take device out of sleep mode */
	ret = regmap_update_bits(mpu3050->map, MPU3050_PWR_MGM,
				 MPU3050_PWR_MGM_SLEEP, 0);
	if (ret) {
		dev_err(mpu3050->dev, "error setting power mode\n");
		return ret;
	}
	msleep(10);

	return 0;
}

static int es8328_resume(struct snd_soc_codec *codec)
{
	struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
	struct es8328_priv *es8328;
	int ret;

	es8328 = snd_soc_codec_get_drvdata(codec);

	ret = clk_prepare_enable(es8328->clk);
	if (ret) {
		dev_err(codec->dev, "unable to enable clock\n");
		return ret;
	}

	ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
					es8328->supplies);
	if (ret) {
		dev_err(codec->dev, "unable to enable regulators\n");
		return ret;
	}

	regcache_mark_dirty(regmap);
	ret = regcache_sync(regmap);
	if (ret) {
		dev_err(codec->dev, "unable to sync regcache\n");
		return ret;
	}

	return 0;
}