3  * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
27 #include <linux/atmel-ssc.h>
69 	struct ssc_device		*ssc;  member
75 	/* Protect SSC registers against concurrent access. */
131 	unsigned long ssc_rate = clk_get_rate(chip->ssc->clk);  in snd_at73c213_set_bitrate()
146 	/* SSC clock / (bitrate * stereo * 16-bit). */  in snd_at73c213_set_bitrate()
166 		/* SSC clock / (ssc divider * 16-bit * stereo). */  in snd_at73c213_set_bitrate()
192 	/* Set divider in SSC device. */  in snd_at73c213_set_bitrate()
193 	ssc_writel(chip->ssc->regs, CMR, ssc_div/2);  in snd_at73c213_set_bitrate()
195 	/* SSC clock / (ssc divider * 16-bit * stereo). */  in snd_at73c213_set_bitrate()
221 	err = clk_enable(chip->ssc->clk);  in snd_at73c213_pcm_open()
232 	clk_disable(chip->ssc->clk);  in snd_at73c213_pcm_close()
243 	val = ssc_readl(chip->ssc->regs, TFMR);  in snd_at73c213_pcm_hw_params()
245 	ssc_writel(chip->ssc->regs, TFMR, val);  in snd_at73c213_pcm_hw_params()
260 	ssc_writel(chip->ssc->regs, PDC_TPR,  in snd_at73c213_pcm_prepare()
262 	ssc_writel(chip->ssc->regs, PDC_TCR,  in snd_at73c213_pcm_prepare()
264 	ssc_writel(chip->ssc->regs, PDC_TNPR,  in snd_at73c213_pcm_prepare()
266 	ssc_writel(chip->ssc->regs, PDC_TNCR,  in snd_at73c213_pcm_prepare()
282 		ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX));  in snd_at73c213_pcm_trigger()
283 		ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN));  in snd_at73c213_pcm_trigger()
286 		ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS));  in snd_at73c213_pcm_trigger()
287 		ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX));  in snd_at73c213_pcm_trigger()
308 	bytes = ssc_readl(chip->ssc->regs, PDC_TPR)  in snd_at73c213_pcm_pointer()
345 			SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev,  in snd_at73c213_pcm_new()
364 	status = ssc_readl(chip->ssc->regs, IMR);  in snd_at73c213_interrupt()
376 		ssc_writel(chip->ssc->regs, PDC_TNPR,  in snd_at73c213_interrupt()
378 		ssc_writel(chip->ssc->regs, PDC_TNCR,  in snd_at73c213_interrupt()
383 	ssc_readl(chip->ssc->regs, IMR);  in snd_at73c213_interrupt()
745 	ssc_writel(chip->ssc->regs, TCMR,  in snd_at73c213_ssc_init()
757 	ssc_writel(chip->ssc->regs, TFMR,  in snd_at73c213_ssc_init()
851 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));  in snd_at73c213_chip_init()
865 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_dev_free()
883 	irq = chip->ssc->irq;  in snd_at73c213_dev_init()
892 	retval = clk_enable(chip->ssc->clk);  in snd_at73c213_dev_init()
934 	clk_disable(chip->ssc->clk);  in snd_at73c213_dev_init()
974 	chip->ssc = ssc_request(board->ssc_id);  in snd_at73c213_probe()
975 	if (IS_ERR(chip->ssc)) {  in snd_at73c213_probe()
976 		dev_dbg(&spi->dev, "could not get ssc%d device\n",  in snd_at73c213_probe()
978 		retval = PTR_ERR(chip->ssc);  in snd_at73c213_probe()
999 	ssc_free(chip->ssc);  in snd_at73c213_probe()
1013 	retval = clk_enable(chip->ssc->clk);  in snd_at73c213_remove()
1016 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_remove()
1017 	clk_disable(chip->ssc->clk);  in snd_at73c213_remove()
1071 	ssc_free(chip->ssc);  in snd_at73c213_remove()
1080 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_suspend()
1081 	clk_disable(chip->ssc->clk);  in snd_at73c213_suspend()
1096 	retval = clk_enable(chip->ssc->clk);  in snd_at73c213_resume()
1101 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));  in snd_at73c213_resume()
1121 MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC");