C++ (Cpp) bfin_read_SPORT_TCR1の例

コード例 #1

ファイル: bf5xx-ad73311.c プロジェクト: 020gzh/linux

static int snd_ad73311_configure(void)
{
	unsigned short ctrl_regs[6];
	unsigned short status = 0;
	int count = 0;

	/* DMCLK = MCLK = 16.384 MHz
	 * SCLK = DMCLK/8 = 2.048 MHz
	 * Sample Rate = DMCLK/2048  = 8 KHz
	 */
	ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
			REGB_SCDIV(0) | REGB_DIRATE(0);
	ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
			REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
	ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
			REGD_IGS(2);
	ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
	ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
	ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;

	local_irq_disable();
	snd_ad73311_startup();
	udelay(1);

	bfin_write_SPORT_TCR1(TFSR);
	bfin_write_SPORT_TCR2(0xF);
	SSYNC();

	/* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
	 * FIFO before enable SPORT to transfer the data
	 */
	for (count = 0; count < 6; count++)
		bfin_write_SPORT_TX16(ctrl_regs[count]);
	SSYNC();
	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
	SSYNC();

	/* When TUVF is set, the data is already send out */
	while (!(status & TUVF) && ++count < 10000) {
		udelay(1);
		status = bfin_read_SPORT_STAT();
		SSYNC();
	}
	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
	SSYNC();
	local_irq_enable();

	if (count >= 10000) {
		printk(KERN_ERR "ad73311: failed to configure codec\n");
		return -1;
	}
	return 0;
}

コード例 #2

ファイル: bf5xx-ad73311.c プロジェクト: romanbb/android_kernel_lge_d851

static int snd_ad73311_configure(void)
{
	unsigned short ctrl_regs[6];
	unsigned short status = 0;
	int count = 0;

	/*                          
                              
                                     
  */
	ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
			REGB_SCDIV(0) | REGB_DIRATE(0);
	ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
			REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
	ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
			REGD_IGS(2);
	ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
	ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
	ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;

	local_irq_disable();
	snd_ad73311_startup();
	udelay(1);

	bfin_write_SPORT_TCR1(TFSR);
	bfin_write_SPORT_TCR2(0xF);
	SSYNC();

	/*                                                               
                                                 
  */
	for (count = 0; count < 6; count++)
		bfin_write_SPORT_TX16(ctrl_regs[count]);
	SSYNC();
	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
	SSYNC();

	/*                                                */
	while (!(status & TUVF) && ++count < 10000) {
		udelay(1);
		status = bfin_read_SPORT_STAT();
		SSYNC();
	}
	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
	SSYNC();
	local_irq_enable();

	if (count >= 10000) {
		printk(KERN_ERR "ad73311: failed to configure codec\n");
		return -1;
	}
	return 0;
}