C++ dev_crit函数代码示例

static irqreturn_t arizona_thermal_shutdown(int irq, void *data)
{
	struct arizona *arizona = data;
	unsigned int val;
	int ret;

	ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_3,
			  &val);
	if (ret != 0) {
		dev_err(arizona->dev, "Failed to read thermal status: %d\n",
			ret);
	} else if (val & ARIZONA_SPK_SHUTDOWN_STS) {
		dev_crit(arizona->dev, "Thermal shutdown\n");
		ret = regmap_update_bits(arizona->regmap,
					 ARIZONA_OUTPUT_ENABLES_1,
					 ARIZONA_OUT4L_ENA |
					 ARIZONA_OUT4R_ENA, 0);
		if (ret != 0)
			dev_crit(arizona->dev,
				 "Failed to disable speaker outputs: %d\n",
				 ret);
	}

	return IRQ_HANDLED;
}

static void tas5720_fault_check_work(struct work_struct *work)
{
	struct tas5720_data *tas5720 = container_of(work, struct tas5720_data,
			fault_check_work.work);
	struct device *dev = tas5720->codec->dev;
	unsigned int curr_fault;
	int ret;

	ret = regmap_read(tas5720->regmap, TAS5720_FAULT_REG, &curr_fault);
	if (ret < 0) {
		dev_err(dev, "failed to read FAULT register: %d\n", ret);
		goto out;
	}

	/* Check/handle all errors except SAIF clock errors */
	curr_fault &= TAS5720_OCE | TAS5720_DCE | TAS5720_OTE;

	/*
	 * Only flag errors once for a given occurrence. This is needed as
	 * the TAS5720 will take time clearing the fault condition internally
	 * during which we don't want to bombard the system with the same
	 * error message over and over.
	 */
	if ((curr_fault & TAS5720_OCE) && !(tas5720->last_fault & TAS5720_OCE))
		dev_crit(dev, "experienced an over current hardware fault\n");

	if ((curr_fault & TAS5720_DCE) && !(tas5720->last_fault & TAS5720_DCE))
		dev_crit(dev, "experienced a DC detection fault\n");

	if ((curr_fault & TAS5720_OTE) && !(tas5720->last_fault & TAS5720_OTE))
		dev_crit(dev, "experienced an over temperature fault\n");

	/* Store current fault value so we can detect any changes next time */
	tas5720->last_fault = curr_fault;

	if (!curr_fault)
		goto out;

	/*
	 * Periodically toggle SDZ (shutdown bit) H->L->H to clear any latching
	 * faults as long as a fault condition persists. Always going through
	 * the full sequence no matter the first return value to minimizes
	 * chances for the device to end up in shutdown mode.
	 */
	ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG,
				TAS5720_SDZ, 0);
	if (ret < 0)
		dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);

	ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG,
				TAS5720_SDZ, TAS5720_SDZ);
	if (ret < 0)
		dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);

out:
	/* Schedule the next fault check at the specified interval */
	schedule_delayed_work(&tas5720->fault_check_work,
			      msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
}

static int watchdog_release(struct inode *inode, struct file *file)
{
	struct watchdog_device *wdd = file->private_data;
	int err = -EBUSY;

	/*
	 * We only stop the watchdog if we received the magic character
	 * or if WDIOF_MAGICCLOSE is not set. If nowayout was set then
	 * watchdog_stop will fail.
	 */
	if (test_and_clear_bit(WDOG_ALLOW_RELEASE, &wdd->status) ||
	    !(wdd->info->options & WDIOF_MAGICCLOSE))
		err = watchdog_stop(wdd);

	/* If the watchdog was not stopped, send a keepalive ping */
	if (err < 0) {
		mutex_lock(&wdd->lock);
		if (!test_bit(WDOG_UNREGISTERED, &wdd->status))
			dev_crit(wdd->dev, "watchdog did not stop!\n");
		mutex_unlock(&wdd->lock);
		watchdog_ping(wdd);
	}

	/* Allow the owner module to be unloaded again */
	module_put(wdd->ops->owner);

	/* make sure that /dev/watchdog can be re-opened */
	clear_bit(WDOG_DEV_OPEN, &wdd->status);

	/* Note wdd may be gone after this, do not use after this! */
	if (wdd->ops->unref)
		wdd->ops->unref(wdd);

	return 0;
}

static int arizona_spk_ev(struct snd_soc_dapm_widget *w,
			  struct snd_kcontrol *kcontrol,
			  int event)
{
	struct snd_soc_codec *codec = w->codec;
	struct arizona *arizona = dev_get_drvdata(codec->dev->parent);
	int val;

	switch (event) {
	case SND_SOC_DAPM_POST_PMU:
		val = snd_soc_read(codec, ARIZONA_INTERRUPT_RAW_STATUS_3);
		if (val & ARIZONA_SPK_SHUTDOWN_STS) {
			dev_crit(arizona->dev,
				 "Speaker not enabled due to temperature\n");
			return -EBUSY;
		}

		snd_soc_update_bits(codec, ARIZONA_OUTPUT_ENABLES_1,
				    1 << w->shift, 1 << w->shift);
		break;
	case SND_SOC_DAPM_PRE_PMD:
		snd_soc_update_bits(codec, ARIZONA_OUTPUT_ENABLES_1,
				    1 << w->shift, 0);
		break;
	}

	return 0;
}

static int __cold oh_free_pcd_fqids(struct device *dev, uint32_t base_fqid)
{
	dev_crit(dev, "callback not implemented!\n");
	BUG();

	return 0;
}

/*
 * Work Around for Errata i202 (2430, 3430, 3630, 4430 and 4460)
 * The access to uart register after MDR1 Access
 * causes UART to corrupt data.
 *
 * Need a delay =
 * 5 L4 clock cycles + 5 UART functional clock cycle (@48MHz = ~0.2uS)
 * give 10 times as much
 */
static void omap_8250_mdr1_errataset(struct uart_8250_port *up,
				     struct omap8250_priv *priv)
{
	u8 timeout = 255;
	u8 old_mdr1;

	old_mdr1 = serial_in(up, UART_OMAP_MDR1);
	if (old_mdr1 == priv->mdr1)
		return;

	serial_out(up, UART_OMAP_MDR1, priv->mdr1);
	udelay(2);
	serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT |
			UART_FCR_CLEAR_RCVR);
	/*
	 * Wait for FIFO to empty: when empty, RX_FIFO_E bit is 0 and
	 * TX_FIFO_E bit is 1.
	 */
	while (UART_LSR_THRE != (serial_in(up, UART_LSR) &
				(UART_LSR_THRE | UART_LSR_DR))) {
		timeout--;
		if (!timeout) {
			/* Should *never* happen. we warn and carry on */
			dev_crit(up->port.dev, "Errata i202: timedout %x\n",
				 serial_in(up, UART_LSR));
			break;
		}
		udelay(1);
	}
}

static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1)
{
         u8 timeout = 255;
 
	printk("serial_omap_mdr1_errataser start\n");
         serial_out(up, UART_OMAP_MDR1, mdr1);

	 rtdm_task_sleep(2000);
         serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR);
         /*
          * Wait for FIFO to empty: when empty, RX_FIFO_E bit is 0 and
          * TX_FIFO_E bit is 1.
          */
         while (UART_LSR_THRE != (serial_in(up, UART_LSR) & (UART_LSR_THRE | UART_LSR_DR))) 
	{
                 timeout--;
                 if (!timeout) 
		 {
                         /* Should *never* happen. we warn and carry on */
                         dev_crit(up->dev, "Errata i202: timedout %x\n",serial_in(up, UART_LSR));
                         break;
                 }
		rtdm_task_sleep(1000);
         }
	 printk("serial_omap_mdr1_errataser end\n");
}

static void gpio_wdt_hwping(unsigned long data)
{
	struct watchdog_device *wdd = (struct watchdog_device *)data;
	struct gpio_wdt_priv *priv = watchdog_get_drvdata(wdd);

	if (priv->armed && time_after(jiffies, priv->last_jiffies +
				      msecs_to_jiffies(wdd->timeout * 1000))) {
		dev_crit(wdd->parent,
			 "Timer expired. System will reboot soon!\n");
		return;
	}

	/* Restart timer */
	mod_timer(&priv->timer, jiffies + priv->hw_margin);

	switch (priv->hw_algo) {
	case HW_ALGO_TOGGLE:
		/* Toggle output pin */
		priv->state = !priv->state;
		gpio_set_value_cansleep(priv->gpio, priv->state);
		break;
	case HW_ALGO_LEVEL:
		/* Pulse */
		gpio_set_value_cansleep(priv->gpio, !priv->active_low);
		udelay(1);
		gpio_set_value_cansleep(priv->gpio, priv->active_low);
		break;
	}
}

/* Allocation code for the OH port's PCD frame queues */
static int __cold oh_alloc_pcd_fqids(struct device *dev,
	uint32_t num,
	uint8_t alignment,
	uint32_t *base_fqid)
{
	dev_crit(dev, "callback not implemented!\n");
	BUG();

	return 0;
}

static int gsc_sysmmu_m2m_fault_handler(struct iommu_domain *domain,
				struct device *dev, unsigned long fault_addr,
				int fault_flags, void *p)
{
	struct gsc_ctx *ctx = p;

	dev_crit(dev, "System MMU fault while M2M ---------\n");
	gsc_hw_dump_regs(ctx->gsc_dev->regs);
	return 0;
}

/*
 * TWL4030 BCI monitoring events
 */
static irqreturn_t twl4030_bci_interrupt(int irq, void *arg)
{
	struct twl4030_bci *bci = arg;
	u8 irqs1, irqs2;
	int ret;

	ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1,
			      TWL4030_INTERRUPTS_BCIISR1A);
	if (ret < 0)
		return IRQ_HANDLED;

	ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2,
			      TWL4030_INTERRUPTS_BCIISR2A);
	if (ret < 0)
		return IRQ_HANDLED;

	dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1);

	if (irqs1 & (TWL4030_ICHGLOW | TWL4030_ICHGEOC)) {
		/* charger state change, inform the core */
		power_supply_changed(&bci->ac);
		power_supply_changed(&bci->usb);
	}

	/* various monitoring events, for now we just log them here */
	if (irqs1 & (TWL4030_TBATOR2 | TWL4030_TBATOR1))
		dev_warn(bci->dev, "battery temperature out of range\n");

	if (irqs1 & TWL4030_BATSTS)
		dev_crit(bci->dev, "battery disconnected\n");

	if (irqs2 & TWL4030_VBATOV)
		dev_crit(bci->dev, "VBAT overvoltage\n");

	if (irqs2 & TWL4030_VBUSOV)
		dev_crit(bci->dev, "VBUS overvoltage\n");

	if (irqs2 & TWL4030_ACCHGOV)
		dev_crit(bci->dev, "Ac charger overvoltage\n");

	return IRQ_HANDLED;
}

static irqreturn_t wm831x_syslo_irq(int irq, void *data)
{
	struct wm831x_power *wm831x_power = data;
	struct wm831x *wm831x = wm831x_power->wm831x;

	/* Not much we can actually *do* but tell people for
	 * posterity, we're probably about to run out of power. */
	dev_crit(wm831x->dev, "SYSVDD under voltage\n");

	return IRQ_HANDLED;
}

static int wdt_ping(struct watchdog_device *wd)
{
	struct device *dev = watchdog_get_drvdata(wd);
	int ret;

	ret = wdt_command(SCU_WATCHDOG_KEEPALIVE, NULL, 0);
	if (ret)
		dev_crit(dev, "Error executing keepalive: %d\n", ret);

	return ret;
}

irqreturn_t cxl_slice_irq_err(int irq, void *data)
{
	struct cxl_afu *afu = data;
	u64 fir_slice, errstat, serr, afu_debug;

	WARN(irq, "CXL SLICE ERROR interrupt %i\n", irq);

	serr = cxl_p1n_read(afu, CXL_PSL_SERR_An);
	fir_slice = cxl_p1n_read(afu, CXL_PSL_FIR_SLICE_An);
	errstat = cxl_p2n_read(afu, CXL_PSL_ErrStat_An);
	afu_debug = cxl_p1n_read(afu, CXL_AFU_DEBUG_An);
	dev_crit(&afu->dev, "PSL_SERR_An: 0x%.16llx\n", serr);
	dev_crit(&afu->dev, "PSL_FIR_SLICE_An: 0x%.16llx\n", fir_slice);
	dev_crit(&afu->dev, "CXL_PSL_ErrStat_An: 0x%.16llx\n", errstat);
	dev_crit(&afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%.16llx\n", afu_debug);

	cxl_p1n_write(afu, CXL_PSL_SERR_An, serr);

	return IRQ_HANDLED;
}

static irqreturn_t wm831x_syslo_irq(int irq, void *data)
{
	struct wm831x_power *wm831x_power = data;
	struct wm831x *wm831x = wm831x_power->wm831x;

	/* Not much we can actually *do* but tell people for
	 * posterity, we're probably about to run out of power. */
	dev_crit(wm831x->dev, "SYSVDD under voltage and wake lock 60s\n");
	wake_lock_timeout(&wm831x_power->syslo_wake,60*HZ);//wait for android closing system
	return IRQ_HANDLED;
}