diff options
Diffstat (limited to 'sound/soc/fsl')
| -rw-r--r-- | sound/soc/fsl/fsl_esai.c | 20 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_esai.h | 5 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 16 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_sai.h | 5 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_spdif.c | 24 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_spdif.h | 5 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_ssi.c | 60 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_ssi.h | 6 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_ssi_dbg.c | 18 |
9 files changed, 65 insertions, 94 deletions
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index da8fd98c7f51..8f43110373b8 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -1,12 +1,8 @@ -/* - * Freescale ESAI ALSA SoC Digital Audio Interface (DAI) driver - * - * Copyright (C) 2014 Freescale Semiconductor, Inc. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Freescale ESAI ALSA SoC Digital Audio Interface (DAI) driver +// +// Copyright (C) 2014 Freescale Semiconductor, Inc. #include <linux/clk.h> #include <linux/dmaengine.h> @@ -226,6 +222,12 @@ static int fsl_esai_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned long clk_rate; int ret; + if (freq == 0) { + dev_err(dai->dev, "%sput freq of HCK%c should not be 0Hz\n", + in ? "in" : "out", tx ? 'T' : 'R'); + return -EINVAL; + } + /* Bypass divider settings if the requirement doesn't change */ if (freq == esai_priv->hck_rate[tx] && dir == esai_priv->hck_dir[tx]) return 0; diff --git a/sound/soc/fsl/fsl_esai.h b/sound/soc/fsl/fsl_esai.h index 5e793bbb6b02..f873588d9045 100644 --- a/sound/soc/fsl/fsl_esai.h +++ b/sound/soc/fsl/fsl_esai.h @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * fsl_esai.h - ALSA ESAI interface for the Freescale i.MX SoC * * Copyright (C) 2014 Freescale Semiconductor, Inc. * * Author: Nicolin Chen <Guangyu.Chen@freescale.com> - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. */ #ifndef _FSL_ESAI_DAI_H diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 18e5ce81527d..4163f2cfc06f 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -1,14 +1,8 @@ -/* - * Freescale ALSA SoC Digital Audio Interface (SAI) driver. - * - * Copyright 2012-2015 Freescale Semiconductor, Inc. - * - * This program is free software, you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation, either version 2 of the License, or(at your - * option) any later version. - * - */ +// SPDX-License-Identifier: GPL-2.0+ +// +// Freescale ALSA SoC Digital Audio Interface (SAI) driver. +// +// Copyright 2012-2015 Freescale Semiconductor, Inc. #include <linux/clk.h> #include <linux/delay.h> diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h index d9ed7be8cb34..24cb156bf995 100644 --- a/sound/soc/fsl/fsl_sai.h +++ b/sound/soc/fsl/fsl_sai.h @@ -1,9 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright 2012-2013 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef __FSL_SAI_H diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 4f7469c1864c..9b59d87b61bf 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -1,17 +1,13 @@ -/* - * Freescale S/PDIF ALSA SoC Digital Audio Interface (DAI) driver - * - * Copyright (C) 2013 Freescale Semiconductor, Inc. - * - * Based on stmp3xxx_spdif_dai.c - * Vladimir Barinov <vbarinov@embeddedalley.com> - * Copyright 2008 SigmaTel, Inc - * Copyright 2008 Embedded Alley Solutions, Inc - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Freescale S/PDIF ALSA SoC Digital Audio Interface (DAI) driver +// +// Copyright (C) 2013 Freescale Semiconductor, Inc. +// +// Based on stmp3xxx_spdif_dai.c +// Vladimir Barinov <vbarinov@embeddedalley.com> +// Copyright 2008 SigmaTel, Inc +// Copyright 2008 Embedded Alley Solutions, Inc #include <linux/bitrev.h> #include <linux/clk.h> diff --git a/sound/soc/fsl/fsl_spdif.h b/sound/soc/fsl/fsl_spdif.h index 00bd3514c610..7666dabaccfd 100644 --- a/sound/soc/fsl/fsl_spdif.h +++ b/sound/soc/fsl/fsl_spdif.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * fsl_spdif.h - ALSA S/PDIF interface for the Freescale i.MX SoC * @@ -8,10 +9,6 @@ * Based on fsl_ssi.h * Author: Timur Tabi <timur@freescale.com> * Copyright 2007-2008 Freescale Semiconductor, Inc. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. */ #ifndef _FSL_SPDIF_DAI_H diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 89df2d9f63d7..0a648229e643 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -1,34 +1,29 @@ -/* - * Freescale SSI ALSA SoC Digital Audio Interface (DAI) driver - * - * Author: Timur Tabi <timur@freescale.com> - * - * Copyright 2007-2010 Freescale Semiconductor, Inc. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - * - * - * Some notes why imx-pcm-fiq is used instead of DMA on some boards: - * - * The i.MX SSI core has some nasty limitations in AC97 mode. While most - * sane processor vendors have a FIFO per AC97 slot, the i.MX has only - * one FIFO which combines all valid receive slots. We cannot even select - * which slots we want to receive. The WM9712 with which this driver - * was developed with always sends GPIO status data in slot 12 which - * we receive in our (PCM-) data stream. The only chance we have is to - * manually skip this data in the FIQ handler. With sampling rates different - * from 48000Hz not every frame has valid receive data, so the ratio - * between pcm data and GPIO status data changes. Our FIQ handler is not - * able to handle this, hence this driver only works with 48000Hz sampling - * rate. - * Reading and writing AC97 registers is another challenge. The core - * provides us status bits when the read register is updated with *another* - * value. When we read the same register two times (and the register still - * contains the same value) these status bits are not set. We work - * around this by not polling these bits but only wait a fixed delay. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Freescale SSI ALSA SoC Digital Audio Interface (DAI) driver +// +// Author: Timur Tabi <timur@freescale.com> +// +// Copyright 2007-2010 Freescale Semiconductor, Inc. +// +// Some notes why imx-pcm-fiq is used instead of DMA on some boards: +// +// The i.MX SSI core has some nasty limitations in AC97 mode. While most +// sane processor vendors have a FIFO per AC97 slot, the i.MX has only +// one FIFO which combines all valid receive slots. We cannot even select +// which slots we want to receive. The WM9712 with which this driver +// was developed with always sends GPIO status data in slot 12 which +// we receive in our (PCM-) data stream. The only chance we have is to +// manually skip this data in the FIQ handler. With sampling rates different +// from 48000Hz not every frame has valid receive data, so the ratio +// between pcm data and GPIO status data changes. Our FIQ handler is not +// able to handle this, hence this driver only works with 48000Hz sampling +// rate. +// Reading and writing AC97 registers is another challenge. The core +// provides us status bits when the read register is updated with *another* +// value. When we read the same register two times (and the register still +// contains the same value) these status bits are not set. We work +// around this by not polling these bits but only wait a fixed delay. #include <linux/init.h> #include <linux/io.h> @@ -385,8 +380,7 @@ static irqreturn_t fsl_ssi_isr(int irq, void *dev_id) { struct fsl_ssi *ssi = dev_id; struct regmap *regs = ssi->regs; - __be32 sisr; - __be32 sisr2; + u32 sisr, sisr2; regmap_read(regs, REG_SSI_SISR, &sisr); diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index 18f8dd5209d5..0bdda608d414 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -1,12 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * fsl_ssi.h - ALSA SSI interface for the Freescale MPC8610 and i.MX SoC * * Author: Timur Tabi <timur@freescale.com> * - * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed - * under the terms of the GNU General Public License version 2. This - * program is licensed "as is" without any warranty of any kind, whether - * express or implied. + * Copyright 2007-2008 Freescale Semiconductor, Inc. */ #ifndef _MPC8610_I2S_H diff --git a/sound/soc/fsl/fsl_ssi_dbg.c b/sound/soc/fsl/fsl_ssi_dbg.c index 0ff469c027dd..1255dfe19eef 100644 --- a/sound/soc/fsl/fsl_ssi_dbg.c +++ b/sound/soc/fsl/fsl_ssi_dbg.c @@ -1,14 +1,10 @@ -/* - * Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions - * - * Copyright 2014 Markus Pargmann <mpa@pengutronix.de>, Pengutronix - * - * Splitted from fsl_ssi.c - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions +// +// Copyright 2014 Markus Pargmann <mpa@pengutronix.de>, Pengutronix +// +// Split from fsl_ssi.c #include <linux/debugfs.h> #include <linux/device.h> |