1 // SPDX-License-Identifier: GPL-2.0+
3  * max98095.c -- MAX98095 ALSA SoC Audio driver
7  * Modified for U-Boot by R. Chandrasekar (rcsekar@samsung.com)
26  * codec mclk clock divider coefficients based on sampling rate
45 	return -EINVAL;  in rate_value()
88 		return -EINVAL;  in max98095_hw_params()
94 		return -EINVAL;  in max98095_hw_params()
96 	priv->rate = rate;  in max98095_hw_params()
111 		return -EIO;  in max98095_hw_params()
130 	if (freq == priv->sysclk)  in max98095_set_sysclk()
146 		return -EINVAL;  in max98095_set_sysclk()
152 		return -EIO;  in max98095_set_sysclk()
154 	priv->sysclk = freq;  in max98095_set_sysclk()
162  * @param fmt		i2S format - supports a subset of the options defined
177 	if (fmt == priv->fmt)  in max98095_set_fmt()
180 	priv->fmt = fmt;  in max98095_set_fmt()
208 		return -EINVAL;  in max98095_set_fmt()
219 		return -EINVAL;  in max98095_set_fmt()
236 		return -EINVAL;  in max98095_set_fmt()
247 		return -EIO;  in max98095_set_fmt()
254  * resets the audio codec
264 	 * Gracefully reset the DSP core and the codec hardware in a proper  in max98095_reset()
269 		debug("%s: Failed to reset DSP: %d\n", __func__, ret);  in max98095_reset()
275 		debug("%s: Failed to reset codec: %d\n", __func__, ret);  in max98095_reset()
280 	 * Reset to hardware default for registers, as there is not a soft  in max98095_reset()
281 	 * reset hardware control register.  in max98095_reset()
286 			debug("%s: Failed to reset: %d\n", __func__, ret);  in max98095_reset()
295  * Intialise max98095 codec device
305 	/* reset the codec, the DSP core, and disable all interrupts */  in max98095_device_init()
308 		debug("Reset\n");  in max98095_device_init()
313 	priv->sysclk = -1U;  in max98095_device_init()
314 	priv->rate = -1U;  in max98095_device_init()
315 	priv->fmt = -1U;  in max98095_device_init()
323 	debug("%s: Hardware revision: %c\n", __func__, (id - 0x40) + 'A');  in max98095_device_init()
358 	/* take the codec out of the shut down */  in max98095_setup_interface()
387 		return -EIO;  in max98095_setup_interface()
407 		debug("%s: max98095 codec set sys clock failed\n", __func__);  in max98095_do_init()
439 	priv->dev = dev;  in max98095_probe()
442 		debug("%s: max98095 codec chip init failed\n", __func__);  in max98095_probe()