2  * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
30 #include <linux/atmel-ssc.h>
72 	struct ssc_device		*ssc;  member
78 	/* Protect SSC registers against concurrent access. */
134 	unsigned long ssc_rate = clk_get_rate(chip->ssc->clk);  in snd_at73c213_set_bitrate()
149 	/* SSC clock / (bitrate * stereo * 16-bit). */  in snd_at73c213_set_bitrate()
169 		/* SSC clock / (ssc divider * 16-bit * stereo). */  in snd_at73c213_set_bitrate()
195 	/* Set divider in SSC device. */  in snd_at73c213_set_bitrate()
196 	ssc_writel(chip->ssc->regs, CMR, ssc_div/2);  in snd_at73c213_set_bitrate()
198 	/* SSC clock / (ssc divider * 16-bit * stereo). */  in snd_at73c213_set_bitrate()
224 	clk_enable(chip->ssc->clk);  in snd_at73c213_pcm_open()
233 	clk_disable(chip->ssc->clk);  in snd_at73c213_pcm_close()
244 	val = ssc_readl(chip->ssc->regs, TFMR);  in snd_at73c213_pcm_hw_params()
246 	ssc_writel(chip->ssc->regs, TFMR, val);  in snd_at73c213_pcm_hw_params()
267 	ssc_writel(chip->ssc->regs, PDC_TPR,  in snd_at73c213_pcm_prepare()
269 	ssc_writel(chip->ssc->regs, PDC_TCR,  in snd_at73c213_pcm_prepare()
271 	ssc_writel(chip->ssc->regs, PDC_TNPR,  in snd_at73c213_pcm_prepare()
273 	ssc_writel(chip->ssc->regs, PDC_TNCR,  in snd_at73c213_pcm_prepare()
289 		ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX));  in snd_at73c213_pcm_trigger()
290 		ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN));  in snd_at73c213_pcm_trigger()
293 		ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS));  in snd_at73c213_pcm_trigger()
294 		ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX));  in snd_at73c213_pcm_trigger()
315 	bytes = ssc_readl(chip->ssc->regs, PDC_TPR)  in snd_at73c213_pcm_pointer()
354 			SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev,  in snd_at73c213_pcm_new()
373 	status = ssc_readl(chip->ssc->regs, IMR);  in snd_at73c213_interrupt()
385 		ssc_writel(chip->ssc->regs, PDC_TNPR,  in snd_at73c213_interrupt()
387 		ssc_writel(chip->ssc->regs, PDC_TNCR,  in snd_at73c213_interrupt()
392 	ssc_readl(chip->ssc->regs, IMR);  in snd_at73c213_interrupt()
758 	ssc_writel(chip->ssc->regs, TCMR,  in snd_at73c213_ssc_init()
770 	ssc_writel(chip->ssc->regs, TFMR,  in snd_at73c213_ssc_init()
862 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));  in snd_at73c213_chip_init()
876 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_dev_free()
894 	irq = chip->ssc->irq;  in snd_at73c213_dev_init()
903 	clk_enable(chip->ssc->clk);  in snd_at73c213_dev_init()
943 	clk_disable(chip->ssc->clk);  in snd_at73c213_dev_init()
983 	chip->ssc = ssc_request(board->ssc_id);  in snd_at73c213_probe()
984 	if (IS_ERR(chip->ssc)) {  in snd_at73c213_probe()
985 		dev_dbg(&spi->dev, "could not get ssc%d device\n",  in snd_at73c213_probe()
987 		retval = PTR_ERR(chip->ssc);  in snd_at73c213_probe()
1008 	ssc_free(chip->ssc);  in snd_at73c213_probe()
1022 	clk_enable(chip->ssc->clk);  in snd_at73c213_remove()
1023 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_remove()
1024 	clk_disable(chip->ssc->clk);  in snd_at73c213_remove()
1078 	ssc_free(chip->ssc);  in snd_at73c213_remove()
1091 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_suspend()
1092 	clk_disable(chip->ssc->clk);  in snd_at73c213_suspend()
1104 	clk_enable(chip->ssc->clk);  in snd_at73c213_resume()
1105 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));  in snd_at73c213_resume()
1130 MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC");