Stephen Warren | d8259ca | 2012-05-17 16:59:51 -0600 | [diff] [blame] | 1 | /* |
| 2 | * tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec. |
| 3 | * |
| 4 | * Author: Stephen Warren <swarren@nvidia.com> |
| 5 | * Copyright (C) 2010-2012 - NVIDIA, Inc. |
| 6 | * |
| 7 | * Based on code copyright/by: |
| 8 | * |
| 9 | * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
| 10 | * |
| 11 | * Copyright 2007 Wolfson Microelectronics PLC. |
| 12 | * Author: Graeme Gregory |
| 13 | * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or |
| 16 | * modify it under the terms of the GNU General Public License |
| 17 | * version 2 as published by the Free Software Foundation. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, but |
| 20 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | * General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 27 | * 02110-1301 USA |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | #include <asm/mach-types.h> |
| 32 | |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/platform_device.h> |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/gpio.h> |
| 37 | #include <linux/of_gpio.h> |
| 38 | |
| 39 | #include <sound/core.h> |
| 40 | #include <sound/jack.h> |
| 41 | #include <sound/pcm.h> |
| 42 | #include <sound/pcm_params.h> |
| 43 | #include <sound/soc.h> |
| 44 | |
| 45 | #include "../codecs/wm8753.h" |
| 46 | |
| 47 | #include "tegra_asoc_utils.h" |
| 48 | |
| 49 | #define DRV_NAME "tegra-snd-wm8753" |
| 50 | |
| 51 | struct tegra_wm8753 { |
| 52 | struct tegra_asoc_utils_data util_data; |
| 53 | }; |
| 54 | |
| 55 | static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream, |
| 56 | struct snd_pcm_hw_params *params) |
| 57 | { |
| 58 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 59 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
Stephen Warren | 40db77a | 2012-06-06 17:15:49 -0600 | [diff] [blame] | 60 | struct snd_soc_codec *codec = codec_dai->codec; |
Stephen Warren | d8259ca | 2012-05-17 16:59:51 -0600 | [diff] [blame] | 61 | struct snd_soc_card *card = codec->card; |
| 62 | struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); |
| 63 | int srate, mclk; |
| 64 | int err; |
| 65 | |
| 66 | srate = params_rate(params); |
| 67 | switch (srate) { |
| 68 | case 11025: |
| 69 | case 22050: |
| 70 | case 44100: |
| 71 | case 88200: |
| 72 | mclk = 11289600; |
| 73 | break; |
| 74 | default: |
| 75 | mclk = 12288000; |
| 76 | break; |
| 77 | } |
| 78 | |
| 79 | err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); |
| 80 | if (err < 0) { |
| 81 | dev_err(card->dev, "Can't configure clocks\n"); |
| 82 | return err; |
| 83 | } |
| 84 | |
| 85 | err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk, |
| 86 | SND_SOC_CLOCK_IN); |
| 87 | if (err < 0) { |
| 88 | dev_err(card->dev, "codec_dai clock not set\n"); |
| 89 | return err; |
| 90 | } |
| 91 | |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static struct snd_soc_ops tegra_wm8753_ops = { |
| 96 | .hw_params = tegra_wm8753_hw_params, |
| 97 | }; |
| 98 | |
| 99 | static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = { |
| 100 | SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| 101 | SND_SOC_DAPM_MIC("Mic Jack", NULL), |
| 102 | }; |
| 103 | |
| 104 | static struct snd_soc_dai_link tegra_wm8753_dai = { |
| 105 | .name = "WM8753", |
| 106 | .stream_name = "WM8753 PCM", |
| 107 | .codec_dai_name = "wm8753-hifi", |
| 108 | .ops = &tegra_wm8753_ops, |
| 109 | .dai_fmt = SND_SOC_DAIFMT_I2S | |
| 110 | SND_SOC_DAIFMT_NB_NF | |
| 111 | SND_SOC_DAIFMT_CBS_CFS, |
| 112 | }; |
| 113 | |
| 114 | static struct snd_soc_card snd_soc_tegra_wm8753 = { |
| 115 | .name = "tegra-wm8753", |
| 116 | .owner = THIS_MODULE, |
| 117 | .dai_link = &tegra_wm8753_dai, |
| 118 | .num_links = 1, |
| 119 | |
| 120 | .dapm_widgets = tegra_wm8753_dapm_widgets, |
| 121 | .num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets), |
| 122 | .fully_routed = true, |
| 123 | }; |
| 124 | |
| 125 | static __devinit int tegra_wm8753_driver_probe(struct platform_device *pdev) |
| 126 | { |
| 127 | struct snd_soc_card *card = &snd_soc_tegra_wm8753; |
| 128 | struct tegra_wm8753 *machine; |
| 129 | int ret; |
| 130 | |
| 131 | machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753), |
| 132 | GFP_KERNEL); |
| 133 | if (!machine) { |
| 134 | dev_err(&pdev->dev, "Can't allocate tegra_wm8753 struct\n"); |
| 135 | ret = -ENOMEM; |
| 136 | goto err; |
| 137 | } |
| 138 | |
| 139 | card->dev = &pdev->dev; |
| 140 | platform_set_drvdata(pdev, card); |
| 141 | snd_soc_card_set_drvdata(card, machine); |
| 142 | |
| 143 | ret = snd_soc_of_parse_card_name(card, "nvidia,model"); |
| 144 | if (ret) |
| 145 | goto err; |
| 146 | |
| 147 | ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); |
| 148 | if (ret) |
| 149 | goto err; |
| 150 | |
| 151 | tegra_wm8753_dai.codec_of_node = of_parse_phandle( |
| 152 | pdev->dev.of_node, "nvidia,audio-codec", 0); |
| 153 | if (!tegra_wm8753_dai.codec_of_node) { |
| 154 | dev_err(&pdev->dev, |
| 155 | "Property 'nvidia,audio-codec' missing or invalid\n"); |
| 156 | ret = -EINVAL; |
| 157 | goto err; |
| 158 | } |
| 159 | |
Stephen Warren | bc92657 | 2012-05-25 18:22:11 -0600 | [diff] [blame] | 160 | tegra_wm8753_dai.cpu_of_node = of_parse_phandle( |
Stephen Warren | d8259ca | 2012-05-17 16:59:51 -0600 | [diff] [blame] | 161 | pdev->dev.of_node, "nvidia,i2s-controller", 0); |
Stephen Warren | bc92657 | 2012-05-25 18:22:11 -0600 | [diff] [blame] | 162 | if (!tegra_wm8753_dai.cpu_of_node) { |
Stephen Warren | d8259ca | 2012-05-17 16:59:51 -0600 | [diff] [blame] | 163 | dev_err(&pdev->dev, |
| 164 | "Property 'nvidia,i2s-controller' missing or invalid\n"); |
| 165 | ret = -EINVAL; |
| 166 | goto err; |
| 167 | } |
| 168 | |
| 169 | tegra_wm8753_dai.platform_of_node = |
Stephen Warren | bc92657 | 2012-05-25 18:22:11 -0600 | [diff] [blame] | 170 | tegra_wm8753_dai.cpu_of_node; |
Stephen Warren | d8259ca | 2012-05-17 16:59:51 -0600 | [diff] [blame] | 171 | |
| 172 | ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); |
| 173 | if (ret) |
| 174 | goto err; |
| 175 | |
| 176 | ret = snd_soc_register_card(card); |
| 177 | if (ret) { |
| 178 | dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", |
| 179 | ret); |
| 180 | goto err_fini_utils; |
| 181 | } |
| 182 | |
| 183 | return 0; |
| 184 | |
| 185 | err_fini_utils: |
| 186 | tegra_asoc_utils_fini(&machine->util_data); |
| 187 | err: |
| 188 | return ret; |
| 189 | } |
| 190 | |
| 191 | static int __devexit tegra_wm8753_driver_remove(struct platform_device *pdev) |
| 192 | { |
| 193 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 194 | struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card); |
| 195 | |
| 196 | snd_soc_unregister_card(card); |
| 197 | |
| 198 | tegra_asoc_utils_fini(&machine->util_data); |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
Bill Pemberton | f6e6574 | 2012-11-19 13:25:33 -0500 | [diff] [blame] | 203 | static const struct of_device_id tegra_wm8753_of_match[] = { |
Stephen Warren | d8259ca | 2012-05-17 16:59:51 -0600 | [diff] [blame] | 204 | { .compatible = "nvidia,tegra-audio-wm8753", }, |
| 205 | {}, |
| 206 | }; |
| 207 | |
| 208 | static struct platform_driver tegra_wm8753_driver = { |
| 209 | .driver = { |
| 210 | .name = DRV_NAME, |
| 211 | .owner = THIS_MODULE, |
| 212 | .pm = &snd_soc_pm_ops, |
| 213 | .of_match_table = tegra_wm8753_of_match, |
| 214 | }, |
| 215 | .probe = tegra_wm8753_driver_probe, |
| 216 | .remove = __devexit_p(tegra_wm8753_driver_remove), |
| 217 | }; |
| 218 | module_platform_driver(tegra_wm8753_driver); |
| 219 | |
| 220 | MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| 221 | MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver"); |
| 222 | MODULE_LICENSE("GPL"); |
| 223 | MODULE_ALIAS("platform:" DRV_NAME); |
| 224 | MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match); |