1 // SPDX-License-Identifier: GPL-2.0-only
3 // Freescale MPC5200 PSC in I2S mode
23  * This driver currently only supports the PSC running in I2S slave mode,
31  * PSC_I2S_FORMATS: audio formats supported by the PSC I2S mode
42 	u32 mode;  in psc_i2s_hw_params()  local
44 	dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i"  in psc_i2s_hw_params()
52 		mode = MPC52xx_PSC_SICR_SIM_CODEC_8;  in psc_i2s_hw_params()
55 		mode = MPC52xx_PSC_SICR_SIM_CODEC_16;  in psc_i2s_hw_params()
58 		mode = MPC52xx_PSC_SICR_SIM_CODEC_24;  in psc_i2s_hw_params()
61 		mode = MPC52xx_PSC_SICR_SIM_CODEC_32;  in psc_i2s_hw_params()
64 		dev_dbg(psc_dma->dev, "invalid format\n");  in psc_i2s_hw_params()
65 		return -EINVAL;  in psc_i2s_hw_params()
67 	out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode);  in psc_i2s_hw_params()
90 	dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n",  in psc_i2s_set_sysclk()
92 	return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL;  in psc_i2s_set_sysclk()
101  * This driver only supports I2S mode.  Return an error if the format is
109 	dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n",  in psc_i2s_set_fmt()
111 	return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;  in psc_i2s_set_fmt()
114 /* ---------------------------------------------------------------------
117  * - Digital Audio Interface (DAI) template
118  * - create/destroy dai hooks
131 	.name = "mpc5200-psc-i2s.0",
150 	.name			= "mpc5200-i2s",
154 /* ---------------------------------------------------------------------
156  * - Probe/remove operations
157  * - OF device match table
159 static int psc_i2s_of_probe(struct platform_device *op)  in psc_i2s_of_probe()  argument
165 	rc = mpc5200_audio_dma_create(op);  in psc_i2s_of_probe()
169 	rc = snd_soc_register_component(&op->dev, &psc_i2s_component,  in psc_i2s_of_probe()
176 	psc_dma = dev_get_drvdata(&op->dev);  in psc_i2s_of_probe()
177 	regs = psc_dma->psc_regs;  in psc_i2s_of_probe()
179 	/* Configure the serial interface mode; defaulting to CODEC8 mode */  in psc_i2s_of_probe()
180 	psc_dma->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |  in psc_i2s_of_probe()
182 	out_be32(&psc_dma->psc_regs->sicr,  in psc_i2s_of_probe()
183 		 psc_dma->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);  in psc_i2s_of_probe()
187 	if (!of_property_present(op->dev.of_node, "codec-handle"))  in psc_i2s_of_probe()
190 	/* Due to errata in the dma mode; need to line up enabling  in psc_i2s_of_probe()
195 	while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) != 0)  in psc_i2s_of_probe()
198 	while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) == 0)  in psc_i2s_of_probe()
205 	out_8(&psc_dma->psc_regs->command,  in psc_i2s_of_probe()
212 static void psc_i2s_of_remove(struct platform_device *op)  in psc_i2s_of_remove()  argument
214 	mpc5200_audio_dma_destroy(op);  in psc_i2s_of_remove()
215 	snd_soc_unregister_component(&op->dev);  in psc_i2s_of_remove()
220 	{ .compatible = "fsl,mpc5200-psc-i2s", },
221 	{ .compatible = "fsl,mpc5200b-psc-i2s", },
230 		.name = "mpc5200-psc-i2s",
238 MODULE_DESCRIPTION("Freescale MPC5200 PSC in I2S mode ASoC Driver");