<table cellspacing='0' cellpadding='0' border='0' ><tr><td style='font: inherit;'>Pedro just send me this routine:<br>static int I2S_setup(){<br>int i;<br>// u32 val32;<br>// CDM<br> struct mpc52xx_cdm __iomem *cdm;<br>// <br>// /* GPIO Modification */<br> struct mpc52xx_gpio __iomem *gpio;<br><br>// /* END GPIO Modification */<br>// <br> cdm = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE);<br> gpio = ioremap(MPC52xx_PA(MPC52xx_GPIO_OFFSET), MPC52xx_GPIO_SIZE);<br>// <br> switch(psc_num) {<br> case 1:<br> initiator_tx = SDMA_INITIATOR_PSC1_TX;<br> initiator_rx = SDMA_INITIATOR_PSC1_RX;<br>
break;<br> case 2:<br> initiator_tx = SDMA_INITIATOR_PSC2_TX;<br> initiator_rx = SDMA_INITIATOR_PSC2_RX;<br> break;<br> default:<br> panic("snd-I2Smgt.o: invalid value for psc_num (%i)\n",psc_num);<br> break;<br> };<br><br> /* 528MHz/(0x1f+1)=16.5 MHz */<br> cdm->mclken_div_psc2 = 0x8001; // Mhz MCLK ( Khz * )<br> psc->command = (MPC52xx_PSC_TX_DISABLE | MPC52xx_PSC_RX_DISABLE);<br> /* PSC2 CODEC with Master Clock */<br> gpio->port_config |= 0x70;<br> /* PSC2 clock enable
*/<br> cdm->clk_enables |= 0x40;<br><br> // PSC reset<br> psc->command = MPC52xx_PSC_RST_RX;<br> psc->command = MPC52xx_PSC_RST_TX;<br> psc->command = MPC52xx_PSC_SEL_MODE_REG_1;<br> psc->command = MPC52xx_PSC_RST_ERR_STAT;<br><br><br> // PSC setup I2S<br> psc->mode = 0;<br> psc->rfalarm = RX_ALARM;<br> psc->tfalarm = TX_ALARM;<br> psc->rfcntl = RX_GRAN;<br> psc->tfcntl = TX_GRAN;<br> psc->mpc52xx_psc_imr = 0x0000;<br><br> psc->sicr = 0x0FE00000;<br> psc->ctur = 0x1f; //Frame length 0x17<br><br> psc->ccr = 0x3f5D; //LRCK KHz, BitCLK MHz 0x3f05!<br><br>// psc->sicr |=
/* DELAY_TIME_SLOT |*/ MULTIWD_ENABLE | CLK_POL_RISING;<br>// <br>// psc->sicr |= GEN_CLK_INT;<br><br> psc->command = MPC52xx_PSC_RST_RX;<br> psc->command = MPC52xx_PSC_RST_TX;<br> psc->command = MPC52xx_PSC_SEL_MODE_REG_1;<br> psc->command = MPC52xx_PSC_RST_ERR_STAT;<br>// <br>// // setup the sdma tasks<br> tx_sdma = sdma_alloc(PERIODS_HW+1);<br> rx_sdma = sdma_alloc(PERIODS_HW+1);<br><br> if (!tx_sdma || !rx_sdma) {<br> printk("sdma_alloc failed\n");<br> return -ENOMEM;<br> }<br>// asimmini<br>// sdma_gen_bd_rx_init(rx_sdma, (phys_addr_t)&(psc->rfdata), PERIODSIZE_HW, initiator_rx, 6);<br>
sdma_gen_bd_rx_init(0, rx_sdma, (phys_addr_t)&(psc->rfdata), initiator_rx, 6,PERIODSIZE_HW);<br>// sdma_gen_bd_tx_init(tx_sdma, (phys_addr_t)&(psc->tfdata), PERIODSIZE_HW, initiator_tx, 6);<br> sdma_gen_bd_tx_init(0, tx_sdma, (phys_addr_t)&(psc->tfdata), initiator_tx, 6);<br><br> printk("txtask is %d rxtask is %d\n", tx_sdma->tasknum, rx_sdma->tasknum);<br>// <br> // prepare the ring buffers ASIMMINI<br> //for(i=0;i<br> // tasknum %d\n", sdma_irq(rx_sdma), MPC52xx_SDMA_IRQ_BASE + rx_sdma->tasknum);<br> if (request_irq(sdma_irq(rx_sdma), I2S_rx_irq, 0, "SPI rx dma", NULL)){<br> printk(KERN_ERR "SPI: SDMA rx irq allocation failed\n");<br> return -EINVAL;<br> }
<br> else <br> printk("SPI: SDA rx irq allocation succeded\n");<br> if (request_irq(sdma_irq(tx_sdma), I2S_tx_irq, 0, "SPI tx dma", NULL)){<br> printk(KERN_ERR "SPI: SDMA tx irq allocation failed\n");<br> return -EINVAL;<br> }<br> else <br> printk("SPI: SDA tx irq allocation succeded\n");<br> <br>// <br>// // clear any pending interrupts<br> sdma_clear_irq(tx_sdma);<br> sdma_clear_irq(rx_sdma);<br>// <br> printk("Before activating the tasks\n");<br>// // activate the tasks<br>// sdma_enable(tx_sdma);<br>// sdma_enable(rx_sdma);<br>// <br>// printk("about to enable SPI
psc\n");<br> udelay(100);<br>// <br>// // enable transmitter and receiver<br> psc->command = MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE;<br>// // psc->command = MPC52xx_PSC_TX_ENABLE;<br>// <br>// <br>// // I2S_print(__FUNCTION__);<br>// <br>// // pcm1680_read();<br>// // pcm1680_configure(44100);<br>// // pcm1680_read();<br> return 0;<br>}<br><br>But i have some problems.<br><br>i don't have any of thiese functions:<br><br>sdma_alloc<br>rx_sdma<br>sdma_gen_bd_rx_init<br>sdma_gen_bd_tx_init<br>sdma_irq<br>sdma_clear_irq<br><br>and some define:<br>I2S_rx_irq<br>I2S_tx_irq<br><br><br></td></tr></table><br>
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