1 // SPDX-License-Identifier: GPL-2.0-or-later
2 // linux/sound/bcm/bcm63xx-i2s-whistler.c
3 // BCM63xx whistler i2s driver
5 // Author: Kevin-Ke Li <kevin-ke.li@broadcom.com>
8 #include <linux/dma-mapping.h>
14 #include "bcm63xx-i2s.h"
16 #define DRV_NAME "brcm-i2s"
81 	ret = clk_set_rate(i2s_priv->i2s_clk, params_rate(params));  in bcm63xx_i2s_hw_params()
83 		dev_err(i2s_priv->dev,  in bcm63xx_i2s_hw_params()
94 	struct regmap *regmap_i2s = i2s_priv->regmap_i2s;  in bcm63xx_i2s_startup()
96 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {  in bcm63xx_i2s_startup()
107 		 * if it is generating the clock for the I2S bus. The bus  in bcm63xx_i2s_startup()
147 	struct regmap *regmap_i2s = i2s_priv->regmap_i2s;  in bcm63xx_i2s_shutdown()
149 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {  in bcm63xx_i2s_shutdown()
227 	void __iomem *regs;  in bcm63xx_i2s_dev_probe()  local
232 	i2s_priv = devm_kzalloc(&pdev->dev, sizeof(*i2s_priv), GFP_KERNEL);  in bcm63xx_i2s_dev_probe()
234 		return -ENOMEM;  in bcm63xx_i2s_dev_probe()
236 	i2s_clk = devm_clk_get(&pdev->dev, "i2sclk");  in bcm63xx_i2s_dev_probe()
238 		dev_err(&pdev->dev, "%s: cannot get a brcm clock: %ld\n",  in bcm63xx_i2s_dev_probe()
243 	regs = devm_platform_ioremap_resource(pdev, 0);  in bcm63xx_i2s_dev_probe()
244 	if (IS_ERR(regs)) {  in bcm63xx_i2s_dev_probe()
245 		ret = PTR_ERR(regs);  in bcm63xx_i2s_dev_probe()
249 	regmap_i2s = devm_regmap_init_mmio(&pdev->dev,  in bcm63xx_i2s_dev_probe()
250 					regs, &brcm_i2s_regmap_config);  in bcm63xx_i2s_dev_probe()
258 	ret = devm_snd_soc_register_component(&pdev->dev,  in bcm63xx_i2s_dev_probe()
262 		dev_err(&pdev->dev, "failed to register the dai\n");  in bcm63xx_i2s_dev_probe()
266 	i2s_priv->dev = &pdev->dev;  in bcm63xx_i2s_dev_probe()
267 	i2s_priv->i2s_clk = i2s_clk;  in bcm63xx_i2s_dev_probe()
268 	i2s_priv->regmap_i2s = regmap_i2s;  in bcm63xx_i2s_dev_probe()
269 	dev_set_drvdata(&pdev->dev, i2s_priv);  in bcm63xx_i2s_dev_probe()
273 		dev_err(&pdev->dev, "failed to register the pcm\n");  in bcm63xx_i2s_dev_probe()
285 	{.compatible = "brcm,bcm63xx-i2s"},
301 MODULE_AUTHOR("Kevin,Li <kevin-ke.li@broadcom.com>");
302 MODULE_DESCRIPTION("Broadcom DSL XPON ASOC I2S Interface");