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Commit cbe1d24f authored by Russell King's avatar Russell King
Browse files

NET: sa11x0-ir: move sa1100_irda_{startup,shutdown,suspend,resume} 



Places these functions in better locations in the file, near where
they are used.  This saves some tiresome paging up/down.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent ba84525b

drivers/net/irda/sa1100_ir.c

+131 −131
Original line number Diff line number Diff line
@@ -230,137 +230,6 @@ sa1100_set_power(struct sa1100_irda *si, unsigned int state) 
	return ret;

}



static int sa1100_irda_startup(struct sa1100_irda *si)

{

	int ret;



	/*

	 * Ensure that the ports for this device are setup correctly.

	 */

	if (si->pdata->startup)	{

		ret = si->pdata->startup(si->dev);

		if (ret)

			return ret;

	}



	/*

	 * Configure PPC for IRDA - we want to drive TXD2 low.

	 * We also want to drive this pin low during sleep.

	 */

	PPSR &= ~PPC_TXD2;

	PSDR &= ~PPC_TXD2;

	PPDR |= PPC_TXD2;



	/*

	 * Enable HP-SIR modulation, and ensure that the port is disabled.

	 */

	Ser2UTCR3 = 0;

	Ser2HSCR0 = HSCR0_UART;

	Ser2UTCR4 = si->utcr4;

	Ser2UTCR0 = UTCR0_8BitData;

	Ser2HSCR2 = HSCR2_TrDataH | HSCR2_RcDataL;



	/*

	 * Clear status register

	 */

	Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID;



	ret = sa1100_irda_set_speed(si, si->speed = 9600);

	if (ret) {

		Ser2UTCR3 = 0;

		Ser2HSCR0 = 0;



		if (si->pdata->shutdown)

			si->pdata->shutdown(si->dev);

	}



	return ret;

}



static void sa1100_irda_shutdown(struct sa1100_irda *si)

{

	/*

	 * Stop all DMA activity.

	 */

	sa1100_stop_dma(si->dma_rx.regs);

	sa1100_stop_dma(si->dma_tx.regs);



	/* Disable the port. */

	Ser2UTCR3 = 0;

	Ser2HSCR0 = 0;



	if (si->pdata->shutdown)

		si->pdata->shutdown(si->dev);

}



#ifdef CONFIG_PM

/*

 * Suspend the IrDA interface.

 */

static int sa1100_irda_suspend(struct platform_device *pdev, pm_message_t state)

{

	struct net_device *dev = platform_get_drvdata(pdev);

	struct sa1100_irda *si;



	if (!dev)

		return 0;



	si = netdev_priv(dev);

	if (si->open) {

		/*

		 * Stop the transmit queue

		 */

		netif_device_detach(dev);

		disable_irq(dev->irq);

		sa1100_irda_shutdown(si);

		__sa1100_irda_set_power(si, 0);

	}



	return 0;

}



/*

 * Resume the IrDA interface.

 */

static int sa1100_irda_resume(struct platform_device *pdev)

{

	struct net_device *dev = platform_get_drvdata(pdev);

	struct sa1100_irda *si;



	if (!dev)

		return 0;



	si = netdev_priv(dev);

	if (si->open) {

		/*

		 * If we missed a speed change, initialise at the new speed

		 * directly.  It is debatable whether this is actually

		 * required, but in the interests of continuing from where

		 * we left off it is desirable.  The converse argument is

		 * that we should re-negotiate at 9600 baud again.

		 */

		if (si->newspeed) {

			si->speed = si->newspeed;

			si->newspeed = 0;

		}



		sa1100_irda_startup(si);

		__sa1100_irda_set_power(si, si->power);

		enable_irq(dev->irq);



		/*

		 * This automatically wakes up the queue

		 */

		netif_device_attach(dev);

	}



	return 0;

}

#else

#define sa1100_irda_suspend	NULL

#define sa1100_irda_resume	NULL

#endif



/*

 * HP-SIR format interrupt service routines.

 */
@@ -774,6 +643,69 @@ sa1100_irda_ioctl(struct net_device *dev, struct ifreq *ifreq, int cmd) 
	return ret;

}



static int sa1100_irda_startup(struct sa1100_irda *si)

{

	int ret;



	/*

	 * Ensure that the ports for this device are setup correctly.

	 */

	if (si->pdata->startup)	{

		ret = si->pdata->startup(si->dev);

		if (ret)

			return ret;

	}



	/*

	 * Configure PPC for IRDA - we want to drive TXD2 low.

	 * We also want to drive this pin low during sleep.

	 */

	PPSR &= ~PPC_TXD2;

	PSDR &= ~PPC_TXD2;

	PPDR |= PPC_TXD2;



	/*

	 * Enable HP-SIR modulation, and ensure that the port is disabled.

	 */

	Ser2UTCR3 = 0;

	Ser2HSCR0 = HSCR0_UART;

	Ser2UTCR4 = si->utcr4;

	Ser2UTCR0 = UTCR0_8BitData;

	Ser2HSCR2 = HSCR2_TrDataH | HSCR2_RcDataL;



	/*

	 * Clear status register

	 */

	Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID;



	ret = sa1100_irda_set_speed(si, si->speed = 9600);

	if (ret) {

		Ser2UTCR3 = 0;

		Ser2HSCR0 = 0;



		if (si->pdata->shutdown)

			si->pdata->shutdown(si->dev);

	}



	return ret;

}



static void sa1100_irda_shutdown(struct sa1100_irda *si)

{

	/*

	 * Stop all DMA activity.

	 */

	sa1100_stop_dma(si->dma_rx.regs);

	sa1100_stop_dma(si->dma_tx.regs);



	/* Disable the port. */

	Ser2UTCR3 = 0;

	Ser2HSCR0 = 0;



	if (si->pdata->shutdown)

		si->pdata->shutdown(si->dev);

}



static int sa1100_irda_start(struct net_device *dev)

{

	struct sa1100_irda *si = netdev_priv(dev);
@@ -1024,6 +956,74 @@ static int sa1100_irda_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

/*

 * Suspend the IrDA interface.

 */

static int sa1100_irda_suspend(struct platform_device *pdev, pm_message_t state)

{

	struct net_device *dev = platform_get_drvdata(pdev);

	struct sa1100_irda *si;



	if (!dev)

		return 0;



	si = netdev_priv(dev);

	if (si->open) {

		/*

		 * Stop the transmit queue

		 */

		netif_device_detach(dev);

		disable_irq(dev->irq);

		sa1100_irda_shutdown(si);

		__sa1100_irda_set_power(si, 0);

	}



	return 0;

}



/*

 * Resume the IrDA interface.

 */

static int sa1100_irda_resume(struct platform_device *pdev)

{

	struct net_device *dev = platform_get_drvdata(pdev);

	struct sa1100_irda *si;



	if (!dev)

		return 0;



	si = netdev_priv(dev);

	if (si->open) {

		/*

		 * If we missed a speed change, initialise at the new speed

		 * directly.  It is debatable whether this is actually

		 * required, but in the interests of continuing from where

		 * we left off it is desirable.  The converse argument is

		 * that we should re-negotiate at 9600 baud again.

		 */

		if (si->newspeed) {

			si->speed = si->newspeed;

			si->newspeed = 0;

		}



		sa1100_irda_startup(si);

		__sa1100_irda_set_power(si, si->power);

		enable_irq(dev->irq);



		/*

		 * This automatically wakes up the queue

		 */

		netif_device_attach(dev);

	}



	return 0;

}

#else

#define sa1100_irda_suspend	NULL

#define sa1100_irda_resume	NULL

#endif



static struct platform_driver sa1100ir_driver = {

	.probe		= sa1100_irda_probe,

	.remove		= sa1100_irda_remove,