C++ (Cpp) pxa_irda_enable_sirclk Examples

Example #1

File: pxaficp_ir.c Project: E-LLP/n900

/*
 * Set the IrDA communications speed.
 */
static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
{
	unsigned long flags;
	unsigned int divisor;

	switch (speed) {
	case 9600:	case 19200:	case 38400:
	case 57600:	case 115200:

		/* refer to PXA250/210 Developer's Manual 10-7 */
		/*  BaudRate = 14.7456 MHz / (16*Divisor) */
		divisor = 14745600 / (16 * speed);

		local_irq_save(flags);

		if (IS_FIR(si)) {
			/* stop RX DMA */
			DCSR(si->rxdma) &= ~DCSR_RUN;
			/* disable FICP */
			ICCR0 = 0;
			pxa_irda_disable_clk(si);

			/* set board transceiver to SIR mode */
			si->pdata->transceiver_mode(si->dev, IR_SIRMODE);

			/* enable the STUART clock */
			pxa_irda_enable_sirclk(si);
		}

		/* disable STUART first */
		STIER = 0;

		/* access DLL & DLH */
		STLCR |= LCR_DLAB;
		STDLL = divisor & 0xff;
		STDLH = divisor >> 8;
		STLCR &= ~LCR_DLAB;

		si->speed = speed;
		STISR = IrSR_IR_RECEIVE_ON | IrSR_XMODE_PULSE_1_6;
		STIER = IER_UUE | IER_RLSE | IER_RAVIE | IER_RTIOE;

		local_irq_restore(flags);
		break;

	case 4000000:
		local_irq_save(flags);

		/* disable STUART */
		STIER = 0;
		STISR = 0;
		pxa_irda_disable_clk(si);

		/* disable FICP first */
		ICCR0 = 0;

		/* set board transceiver to FIR mode */
		si->pdata->transceiver_mode(si->dev, IR_FIRMODE);

		/* enable the FICP clock */
		pxa_irda_enable_firclk(si);

		si->speed = speed;
		pxa_irda_fir_dma_rx_start(si);
		ICCR0 = ICCR0_ITR | ICCR0_RXE;

		local_irq_restore(flags);
		break;

	default:
		return -EINVAL;
	}

	return 0;
}

Example #2

File: pxaficp_ir.c Project: DirtyDroidX/android_kernel_htc_m8ul

static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
{
	unsigned long flags;
	unsigned int divisor;

	switch (speed) {
	case 9600:	case 19200:	case 38400:
	case 57600:	case 115200:

		
		
		divisor = 14745600 / (16 * speed);

		local_irq_save(flags);

		if (IS_FIR(si)) {
			
			DCSR(si->rxdma) &= ~DCSR_RUN;
			
			ICCR0 = 0;
			pxa_irda_disable_clk(si);

			
			pxa_irda_set_mode(si, IR_SIRMODE);

			
			pxa_irda_enable_sirclk(si);
		}

		
		STIER = 0;

		
		STLCR |= LCR_DLAB;
		STDLL = divisor & 0xff;
		STDLH = divisor >> 8;
		STLCR &= ~LCR_DLAB;

		si->speed = speed;
		STISR = IrSR_IR_RECEIVE_ON | IrSR_XMODE_PULSE_1_6;
		STIER = IER_UUE | IER_RLSE | IER_RAVIE | IER_RTIOE;

		local_irq_restore(flags);
		break;

	case 4000000:
		local_irq_save(flags);

		
		STIER = 0;
		STISR = 0;
		pxa_irda_disable_clk(si);

		
		ICCR0 = 0;

		
		pxa_irda_set_mode(si, IR_FIRMODE);

		
		pxa_irda_enable_firclk(si);

		si->speed = speed;
		pxa_irda_fir_dma_rx_start(si);
		ICCR0 = ICCR0_ITR | ICCR0_RXE;

		local_irq_restore(flags);
		break;

	default:
		return -EINVAL;
	}

	return 0;
}