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Diffstat (limited to 'sound/soc/samsung/s3c2412-i2s.c')
-rw-r--r--sound/soc/samsung/s3c2412-i2s.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c
deleted file mode 100644
index b35d828c1cfe..000000000000
--- a/sound/soc/samsung/s3c2412-i2s.c
+++ /dev/null
@@ -1,258 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-//
-// ALSA Soc Audio Layer - S3C2412 I2S driver
-//
-// Copyright (c) 2006 Wolfson Microelectronics PLC.
-// Graeme Gregory graeme.gregory@wolfsonmicro.com
-// linux@wolfsonmicro.com
-//
-// Copyright (c) 2007, 2004-2005 Simtec Electronics
-// http://armlinux.simtec.co.uk/
-// Ben Dooks <ben@simtec.co.uk>
-
-#include <linux/delay.h>
-#include <linux/gpio.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/module.h>
-
-#include <sound/soc.h>
-#include <sound/pcm_params.h>
-
-#include <mach/gpio-samsung.h>
-#include <plat/gpio-cfg.h>
-
-#include "dma.h"
-#include "regs-i2s-v2.h"
-#include "s3c2412-i2s.h"
-
-#include <linux/platform_data/asoc-s3c.h>
-
-static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_out = {
- .chan_name = "tx",
- .addr_width = 4,
-};
-
-static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_in = {
- .chan_name = "rx",
- .addr_width = 4,
-};
-
-static struct s3c_i2sv2_info s3c2412_i2s;
-
-static int s3c2412_i2s_probe(struct snd_soc_dai *dai)
-{
- int ret;
-
- pr_debug("Entered %s\n", __func__);
-
- snd_soc_dai_init_dma_data(dai, &s3c2412_i2s_pcm_stereo_out,
- &s3c2412_i2s_pcm_stereo_in);
-
- ret = s3c_i2sv2_probe(dai, &s3c2412_i2s, S3C2410_PA_IIS);
- if (ret)
- return ret;
-
- s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in;
- s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out;
-
- s3c2412_i2s.iis_cclk = devm_clk_get(dai->dev, "i2sclk");
- if (IS_ERR(s3c2412_i2s.iis_cclk)) {
- pr_err("failed to get i2sclk clock\n");
- ret = PTR_ERR(s3c2412_i2s.iis_cclk);
- goto err;
- }
-
- /* Set MPLL as the source for IIS CLK */
-
- clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll"));
- ret = clk_prepare_enable(s3c2412_i2s.iis_cclk);
- if (ret)
- goto err;
-
- /* Configure the I2S pins (GPE0...GPE4) in correct mode */
- s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
- S3C_GPIO_PULL_NONE);
-
- return 0;
-
-err:
- s3c_i2sv2_cleanup(dai, &s3c2412_i2s);
-
- return ret;
-}
-
-static int s3c2412_i2s_remove(struct snd_soc_dai *dai)
-{
- clk_disable_unprepare(s3c2412_i2s.iis_cclk);
- s3c_i2sv2_cleanup(dai, &s3c2412_i2s);
-
- return 0;
-}
-
-static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *cpu_dai)
-{
- struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai);
- u32 iismod;
-
- pr_debug("Entered %s\n", __func__);
-
- iismod = readl(i2s->regs + S3C2412_IISMOD);
- pr_debug("%s: r: IISMOD: %x\n", __func__, iismod);
-
- switch (params_width(params)) {
- case 8:
- iismod |= S3C2412_IISMOD_8BIT;
- break;
- case 16:
- iismod &= ~S3C2412_IISMOD_8BIT;
- break;
- }
-
- writel(iismod, i2s->regs + S3C2412_IISMOD);
- pr_debug("%s: w: IISMOD: %x\n", __func__, iismod);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int s3c2412_i2s_suspend(struct snd_soc_component *component)
-{
- struct s3c_i2sv2_info *i2s = snd_soc_component_get_drvdata(component);
- u32 iismod;
-
- if (component->active) {
- i2s->suspend_iismod = readl(i2s->regs + S3C2412_IISMOD);
- i2s->suspend_iiscon = readl(i2s->regs + S3C2412_IISCON);
- i2s->suspend_iispsr = readl(i2s->regs + S3C2412_IISPSR);
-
- /* some basic suspend checks */
-
- iismod = readl(i2s->regs + S3C2412_IISMOD);
-
- if (iismod & S3C2412_IISCON_RXDMA_ACTIVE)
- pr_warn("%s: RXDMA active?\n", __func__);
-
- if (iismod & S3C2412_IISCON_TXDMA_ACTIVE)
- pr_warn("%s: TXDMA active?\n", __func__);
-
- if (iismod & S3C2412_IISCON_IIS_ACTIVE)
- pr_warn("%s: IIS active\n", __func__);
- }
-
- return 0;
-}
-
-static int s3c2412_i2s_resume(struct snd_soc_component *component)
-{
- struct s3c_i2sv2_info *i2s = snd_soc_component_get_drvdata(component);
-
- pr_info("component_active %d, IISMOD %08x, IISCON %08x\n",
- component->active, i2s->suspend_iismod, i2s->suspend_iiscon);
-
- if (component->active) {
- writel(i2s->suspend_iiscon, i2s->regs + S3C2412_IISCON);
- writel(i2s->suspend_iismod, i2s->regs + S3C2412_IISMOD);
- writel(i2s->suspend_iispsr, i2s->regs + S3C2412_IISPSR);
-
- writel(S3C2412_IISFIC_RXFLUSH | S3C2412_IISFIC_TXFLUSH,
- i2s->regs + S3C2412_IISFIC);
-
- ndelay(250);
- writel(0x0, i2s->regs + S3C2412_IISFIC);
- }
-
- return 0;
-}
-#else
-#define s3c2412_i2s_suspend NULL
-#define s3c2412_i2s_resume NULL
-#endif
-
-#define S3C2412_I2S_RATES \
- (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
- SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
- SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
-
-static const struct snd_soc_dai_ops s3c2412_i2s_dai_ops = {
- .hw_params = s3c2412_i2s_hw_params,
-};
-
-static struct snd_soc_dai_driver s3c2412_i2s_dai = {
- .probe = s3c2412_i2s_probe,
- .remove = s3c2412_i2s_remove,
- .playback = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = S3C2412_I2S_RATES,
- .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
- },
- .capture = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = S3C2412_I2S_RATES,
- .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
- },
- .ops = &s3c2412_i2s_dai_ops,
-};
-
-static const struct snd_soc_component_driver s3c2412_i2s_component = {
- .name = "s3c2412-i2s",
- .suspend = s3c2412_i2s_suspend,
- .resume = s3c2412_i2s_resume,
-};
-
-static int s3c2412_iis_dev_probe(struct platform_device *pdev)
-{
- int ret = 0;
- struct resource *res;
- struct s3c_audio_pdata *pdata = dev_get_platdata(&pdev->dev);
-
- if (!pdata) {
- dev_err(&pdev->dev, "missing platform data");
- return -ENXIO;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- s3c2412_i2s.regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(s3c2412_i2s.regs))
- return PTR_ERR(s3c2412_i2s.regs);
-
- s3c2412_i2s_pcm_stereo_out.addr = res->start + S3C2412_IISTXD;
- s3c2412_i2s_pcm_stereo_out.filter_data = pdata->dma_playback;
- s3c2412_i2s_pcm_stereo_in.addr = res->start + S3C2412_IISRXD;
- s3c2412_i2s_pcm_stereo_in.filter_data = pdata->dma_capture;
-
- ret = samsung_asoc_dma_platform_register(&pdev->dev,
- pdata->dma_filter,
- "tx", "rx", NULL);
- if (ret) {
- pr_err("failed to register the DMA: %d\n", ret);
- return ret;
- }
-
- ret = s3c_i2sv2_register_component(&pdev->dev, -1,
- &s3c2412_i2s_component,
- &s3c2412_i2s_dai);
- if (ret)
- pr_err("failed to register the dai\n");
-
- return ret;
-}
-
-static struct platform_driver s3c2412_iis_driver = {
- .probe = s3c2412_iis_dev_probe,
- .driver = {
- .name = "s3c2412-iis",
- },
-};
-
-module_platform_driver(s3c2412_iis_driver);
-
-/* Module information */
-MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
-MODULE_DESCRIPTION("S3C2412 I2S SoC Interface");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s3c2412-iis");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.