2 * Copyright 2012 Freescale Semiconductor, Inc.
3 * Copyright 2012 Linaro Ltd.
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
13 #include <linux/gpio.h>
14 #include <linux/module.h>
16 #include <linux/of_platform.h>
17 #include <linux/i2c.h>
18 #include <linux/of_gpio.h>
19 #include <sound/soc.h>
20 #include <sound/jack.h>
22 #include "imx-audmux.h"
24 #define DAI_NAME_SIZE 32
25 #define MUX_PORT_MAX 7
27 struct imx_es8328_data {
29 struct snd_soc_dai_link dai;
30 struct snd_soc_card card;
31 char codec_dai_name[DAI_NAME_SIZE];
32 char platform_name[DAI_NAME_SIZE];
36 static struct snd_soc_jack_gpio headset_jack_gpios[] = {
39 .name = "headset-gpio",
40 .report = SND_JACK_HEADSET,
46 static struct snd_soc_jack headset_jack;
48 static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
50 struct imx_es8328_data *data = container_of(rtd->card,
51 struct imx_es8328_data, card);
54 /* Headphone jack detection */
55 if (gpio_is_valid(data->jack_gpio)) {
56 ret = snd_soc_card_jack_new(rtd->card, "Headphone",
57 SND_JACK_HEADPHONE | SND_JACK_BTN_0,
58 &headset_jack, NULL, 0);
62 headset_jack_gpios[0].gpio = data->jack_gpio;
63 ret = snd_soc_jack_add_gpios(&headset_jack,
64 ARRAY_SIZE(headset_jack_gpios),
71 static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
72 SND_SOC_DAPM_MIC("Mic Jack", NULL),
73 SND_SOC_DAPM_HP("Headphone", NULL),
74 SND_SOC_DAPM_SPK("Speaker", NULL),
75 SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
78 static int imx_es8328_probe(struct platform_device *pdev)
80 struct device_node *np = pdev->dev.of_node;
81 struct device_node *ssi_np = NULL, *codec_np = NULL;
82 struct platform_device *ssi_pdev;
83 struct imx_es8328_data *data;
84 u32 int_port, ext_port;
86 struct device *dev = &pdev->dev;
88 ret = of_property_read_u32(np, "mux-int-port", &int_port);
90 dev_err(dev, "mux-int-port missing or invalid\n");
93 if (int_port > MUX_PORT_MAX || int_port == 0) {
94 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
99 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
101 dev_err(dev, "mux-ext-port missing or invalid\n");
104 if (ext_port > MUX_PORT_MAX || ext_port == 0) {
105 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
112 * The port numbering in the hardware manual starts at 1, while
113 * the audmux API expects it starts at 0.
117 ret = imx_audmux_v2_configure_port(int_port,
118 IMX_AUDMUX_V2_PTCR_SYN |
119 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
120 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
121 IMX_AUDMUX_V2_PTCR_TFSDIR |
122 IMX_AUDMUX_V2_PTCR_TCLKDIR,
123 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
125 dev_err(dev, "audmux internal port setup failed\n");
128 ret = imx_audmux_v2_configure_port(ext_port,
129 IMX_AUDMUX_V2_PTCR_SYN,
130 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
132 dev_err(dev, "audmux external port setup failed\n");
136 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
137 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
138 if (!ssi_np || !codec_np) {
139 dev_err(dev, "phandle missing or invalid\n");
144 ssi_pdev = of_find_device_by_node(ssi_np);
146 dev_err(dev, "failed to find SSI platform device\n");
151 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
159 data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
161 data->dai.name = "hifi";
162 data->dai.stream_name = "hifi";
163 data->dai.codec_dai_name = "es8328-hifi-analog";
164 data->dai.codec_of_node = codec_np;
165 data->dai.cpu_of_node = ssi_np;
166 data->dai.platform_of_node = ssi_np;
167 data->dai.init = &imx_es8328_dai_init;
168 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
169 SND_SOC_DAIFMT_CBM_CFM;
171 data->card.dev = dev;
172 data->card.dapm_widgets = imx_es8328_dapm_widgets;
173 data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
174 ret = snd_soc_of_parse_card_name(&data->card, "model");
176 dev_err(dev, "Unable to parse card name\n");
179 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
181 dev_err(dev, "Unable to parse routing: %d\n", ret);
184 data->card.num_links = 1;
185 data->card.owner = THIS_MODULE;
186 data->card.dai_link = &data->dai;
188 ret = snd_soc_register_card(&data->card);
190 dev_err(dev, "Unable to register: %d\n", ret);
194 platform_set_drvdata(pdev, data);
197 of_node_put(codec_np);
202 static int imx_es8328_remove(struct platform_device *pdev)
204 struct imx_es8328_data *data = platform_get_drvdata(pdev);
206 snd_soc_jack_free_gpios(&headset_jack, ARRAY_SIZE(headset_jack_gpios),
209 snd_soc_unregister_card(&data->card);
214 static const struct of_device_id imx_es8328_dt_ids[] = {
215 { .compatible = "fsl,imx-audio-es8328", },
218 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
220 static struct platform_driver imx_es8328_driver = {
222 .name = "imx-es8328",
223 .of_match_table = imx_es8328_dt_ids,
225 .probe = imx_es8328_probe,
226 .remove = imx_es8328_remove,
228 module_platform_driver(imx_es8328_driver);
230 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
231 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
232 MODULE_LICENSE("GPL v2");
233 MODULE_ALIAS("platform:imx-audio-es8328");