Jassi Brar | 5033f43 | 2010-11-22 15:37:25 +0900 | [diff] [blame] | 1 | /* sound/soc/samsung/s3c2412-i2s.c |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 2 | * |
| 3 | * ALSA Soc Audio Layer - S3C2412 I2S driver |
| 4 | * |
| 5 | * Copyright (c) 2006 Wolfson Microelectronics PLC. |
| 6 | * Graeme Gregory graeme.gregory@wolfsonmicro.com |
| 7 | * linux@wolfsonmicro.com |
| 8 | * |
| 9 | * Copyright (c) 2007, 2004-2005 Simtec Electronics |
| 10 | * http://armlinux.simtec.co.uk/ |
| 11 | * Ben Dooks <ben@simtec.co.uk> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify it |
| 14 | * under the terms of the GNU General Public License as published by the |
| 15 | * Free Software Foundation; either version 2 of the License, or (at your |
| 16 | * option) any later version. |
| 17 | */ |
| 18 | |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 19 | #include <linux/delay.h> |
Ben Dooks | ec976d6 | 2009-05-13 22:52:24 +0100 | [diff] [blame] | 20 | #include <linux/gpio.h> |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 21 | #include <linux/clk.h> |
Ben Dooks | 8150bc8 | 2009-03-04 00:49:26 +0000 | [diff] [blame] | 22 | #include <linux/io.h> |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 23 | #include <linux/module.h> |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 24 | |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 25 | #include <sound/soc.h> |
Seungwhan Youn | 0378b6a | 2011-01-11 07:26:06 +0900 | [diff] [blame] | 26 | #include <sound/pcm_params.h> |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 27 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 28 | #include <mach/dma.h> |
Sachin Kamat | abffae6 | 2014-01-22 17:30:38 +0530 | [diff] [blame] | 29 | #include <mach/gpio-samsung.h> |
| 30 | #include <plat/gpio-cfg.h> |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 31 | |
Jassi Brar | 4b640cf | 2010-11-22 15:35:57 +0900 | [diff] [blame] | 32 | #include "dma.h" |
Jassi Brar | d07e7ce | 2010-04-27 15:55:21 +0900 | [diff] [blame] | 33 | #include "regs-i2s-v2.h" |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 34 | #include "s3c2412-i2s.h" |
| 35 | |
Jassi Brar | faa3177 | 2009-11-17 16:53:23 +0900 | [diff] [blame] | 36 | static struct s3c_dma_params s3c2412_i2s_pcm_stereo_out = { |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 37 | .client = |
| 38 | (struct s3c_dma_client *)&s3c2412_i2s_pcm_stereo_out, |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 39 | .channel = DMACH_I2S_OUT, |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 40 | .ch_name = "tx", |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 41 | .dma_size = 4, |
| 42 | }; |
| 43 | |
Jassi Brar | faa3177 | 2009-11-17 16:53:23 +0900 | [diff] [blame] | 44 | static struct s3c_dma_params s3c2412_i2s_pcm_stereo_in = { |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 45 | .client = |
| 46 | (struct s3c_dma_client *)&s3c2412_i2s_pcm_stereo_in, |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 47 | .channel = DMACH_I2S_IN, |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 48 | .ch_name = "rx", |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 49 | .dma_size = 4, |
| 50 | }; |
| 51 | |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 52 | static struct s3c_i2sv2_info s3c2412_i2s; |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 53 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 54 | static int s3c2412_i2s_probe(struct snd_soc_dai *dai) |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 55 | { |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 56 | int ret; |
| 57 | |
Mark Brown | ee7d476 | 2009-03-06 18:04:34 +0000 | [diff] [blame] | 58 | pr_debug("Entered %s\n", __func__); |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 59 | |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 60 | samsung_asoc_init_dma_data(dai, &s3c2412_i2s_pcm_stereo_out, |
| 61 | &s3c2412_i2s_pcm_stereo_in); |
| 62 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 63 | ret = s3c_i2sv2_probe(dai, &s3c2412_i2s, S3C2410_PA_IIS); |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 64 | if (ret) |
| 65 | return ret; |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 66 | |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 67 | s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in; |
| 68 | s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out; |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 69 | |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 70 | s3c2412_i2s.iis_cclk = devm_clk_get(dai->dev, "i2sclk"); |
Axel Lin | 7803e32 | 2011-09-15 10:36:54 +0800 | [diff] [blame] | 71 | if (IS_ERR(s3c2412_i2s.iis_cclk)) { |
Mark Brown | 008bec3 | 2009-04-24 16:27:09 +0100 | [diff] [blame] | 72 | pr_err("failed to get i2sclk clock\n"); |
Axel Lin | 7803e32 | 2011-09-15 10:36:54 +0800 | [diff] [blame] | 73 | return PTR_ERR(s3c2412_i2s.iis_cclk); |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 74 | } |
| 75 | |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 76 | /* Set MPLL as the source for IIS CLK */ |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 77 | |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 78 | clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll")); |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 79 | clk_enable(s3c2412_i2s.iis_cclk); |
| 80 | |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 81 | s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk; |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 82 | |
Sylwester Nawrocki | 601787c | 2012-07-13 19:22:45 +0200 | [diff] [blame] | 83 | /* Configure the I2S pins (GPE0...GPE4) in correct mode */ |
| 84 | s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2), |
| 85 | S3C_GPIO_PULL_NONE); |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 86 | |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 87 | return 0; |
| 88 | } |
| 89 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 90 | static int s3c2412_i2s_remove(struct snd_soc_dai *dai) |
| 91 | { |
| 92 | clk_disable(s3c2412_i2s.iis_cclk); |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 93 | |
| 94 | return 0; |
| 95 | } |
| 96 | |
Jassi Brar | 9c9b125 | 2010-03-10 16:48:58 +0900 | [diff] [blame] | 97 | static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream, |
| 98 | struct snd_pcm_hw_params *params, |
| 99 | struct snd_soc_dai *cpu_dai) |
| 100 | { |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 101 | struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai); |
Jassi Brar | 9c9b125 | 2010-03-10 16:48:58 +0900 | [diff] [blame] | 102 | u32 iismod; |
| 103 | |
| 104 | pr_debug("Entered %s\n", __func__); |
| 105 | |
Jassi Brar | 9c9b125 | 2010-03-10 16:48:58 +0900 | [diff] [blame] | 106 | iismod = readl(i2s->regs + S3C2412_IISMOD); |
| 107 | pr_debug("%s: r: IISMOD: %x\n", __func__, iismod); |
| 108 | |
Tushar Behera | 88ce146 | 2014-05-23 17:35:39 +0530 | [diff] [blame] | 109 | switch (params_width(params)) { |
| 110 | case 8: |
Jassi Brar | 9c9b125 | 2010-03-10 16:48:58 +0900 | [diff] [blame] | 111 | iismod |= S3C2412_IISMOD_8BIT; |
| 112 | break; |
Tushar Behera | 88ce146 | 2014-05-23 17:35:39 +0530 | [diff] [blame] | 113 | case 16: |
Jassi Brar | 9c9b125 | 2010-03-10 16:48:58 +0900 | [diff] [blame] | 114 | iismod &= ~S3C2412_IISMOD_8BIT; |
| 115 | break; |
| 116 | } |
| 117 | |
| 118 | writel(iismod, i2s->regs + S3C2412_IISMOD); |
| 119 | pr_debug("%s: w: IISMOD: %x\n", __func__, iismod); |
| 120 | |
| 121 | return 0; |
| 122 | } |
| 123 | |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 124 | #define S3C2412_I2S_RATES \ |
| 125 | (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \ |
| 126 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ |
| 127 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) |
| 128 | |
Lars-Peter Clausen | 85e7652 | 2011-11-23 11:40:40 +0100 | [diff] [blame] | 129 | static const struct snd_soc_dai_ops s3c2412_i2s_dai_ops = { |
Jassi Brar | 9c9b125 | 2010-03-10 16:48:58 +0900 | [diff] [blame] | 130 | .hw_params = s3c2412_i2s_hw_params, |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 131 | }; |
| 132 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 133 | static struct snd_soc_dai_driver s3c2412_i2s_dai = { |
Ben Dooks | dc85447 | 2009-03-04 00:49:30 +0000 | [diff] [blame] | 134 | .probe = s3c2412_i2s_probe, |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 135 | .remove = s3c2412_i2s_remove, |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 136 | .playback = { |
| 137 | .channels_min = 2, |
| 138 | .channels_max = 2, |
| 139 | .rates = S3C2412_I2S_RATES, |
| 140 | .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE, |
| 141 | }, |
| 142 | .capture = { |
| 143 | .channels_min = 2, |
| 144 | .channels_max = 2, |
| 145 | .rates = S3C2412_I2S_RATES, |
| 146 | .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE, |
| 147 | }, |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 148 | .ops = &s3c2412_i2s_dai_ops, |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 149 | }; |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 150 | |
Kuninori Morimoto | eca3b01 | 2013-03-21 03:35:22 -0700 | [diff] [blame] | 151 | static const struct snd_soc_component_driver s3c2412_i2s_component = { |
| 152 | .name = "s3c2412-i2s", |
| 153 | }; |
| 154 | |
Bill Pemberton | fdca21a | 2012-12-07 09:26:15 -0500 | [diff] [blame] | 155 | static int s3c2412_iis_dev_probe(struct platform_device *pdev) |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 156 | { |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 157 | int ret = 0; |
Vasily Khoruzhick | 87b132b | 2014-06-23 23:24:04 +0300 | [diff] [blame^] | 158 | struct resource *res; |
| 159 | |
| 160 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 161 | if (!res) { |
| 162 | dev_err(&pdev->dev, "Can't get IO resource.\n"); |
| 163 | return -ENOENT; |
| 164 | } |
| 165 | s3c2412_i2s.regs = devm_ioremap_resource(&pdev->dev, res); |
| 166 | if (s3c2412_i2s.regs == NULL) |
| 167 | return -ENXIO; |
| 168 | |
| 169 | s3c2412_i2s_pcm_stereo_out.dma_addr = res->start + S3C2412_IISTXD; |
| 170 | s3c2412_i2s_pcm_stereo_in.dma_addr = res->start + S3C2412_IISRXD; |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 171 | |
Kuninori Morimoto | eca3b01 | 2013-03-21 03:35:22 -0700 | [diff] [blame] | 172 | ret = s3c_i2sv2_register_component(&pdev->dev, -1, |
| 173 | &s3c2412_i2s_component, |
| 174 | &s3c2412_i2s_dai); |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 175 | if (ret) { |
| 176 | pr_err("failed to register the dai\n"); |
| 177 | return ret; |
| 178 | } |
| 179 | |
Tushar Behera | 06b10ff | 2013-08-22 18:15:02 +0530 | [diff] [blame] | 180 | ret = samsung_asoc_dma_platform_register(&pdev->dev); |
Tushar Behera | 7253e35 | 2014-05-21 08:52:19 +0530 | [diff] [blame] | 181 | if (ret) |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 182 | pr_err("failed to register the DMA: %d\n", ret); |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 183 | |
Padmavathi Venna | a08485d | 2012-12-07 13:59:21 +0530 | [diff] [blame] | 184 | return ret; |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 185 | } |
| 186 | |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 187 | static struct platform_driver s3c2412_iis_driver = { |
| 188 | .probe = s3c2412_iis_dev_probe, |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 189 | .driver = { |
| 190 | .name = "s3c2412-iis", |
| 191 | .owner = THIS_MODULE, |
| 192 | }, |
| 193 | }; |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 194 | |
Mark Brown | e00c3f5 | 2011-11-23 15:20:13 +0000 | [diff] [blame] | 195 | module_platform_driver(s3c2412_iis_driver); |
Mark Brown | 3f4b783 | 2008-12-03 19:26:35 +0000 | [diff] [blame] | 196 | |
Ben Dooks | 49646df | 2008-01-10 14:47:21 +0100 | [diff] [blame] | 197 | /* Module information */ |
| 198 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); |
| 199 | MODULE_DESCRIPTION("S3C2412 I2S SoC Interface"); |
| 200 | MODULE_LICENSE("GPL"); |
Mark Brown | 960d069 | 2010-08-12 11:02:19 +0100 | [diff] [blame] | 201 | MODULE_ALIAS("platform:s3c2412-iis"); |