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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
260 lines
5.9 KiB
C
260 lines
5.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for the 1250-EV1 audio I/O module
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*
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* Copyright 2011 Wolfson Microelectronics plc
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/wm1250-ev1.h>
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static const char *wm1250_gpio_names[WM1250_EV1_NUM_GPIOS] = {
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"WM1250 CLK_ENA",
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"WM1250 CLK_SEL0",
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"WM1250 CLK_SEL1",
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"WM1250 OSR",
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"WM1250 MASTER",
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};
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struct wm1250_priv {
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struct gpio gpios[WM1250_EV1_NUM_GPIOS];
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};
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static int wm1250_ev1_set_bias_level(struct snd_soc_component *component,
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enum snd_soc_bias_level level)
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{
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struct wm1250_priv *wm1250 = dev_get_drvdata(component->dev);
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int ena;
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if (wm1250)
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ena = wm1250->gpios[WM1250_EV1_GPIO_CLK_ENA].gpio;
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else
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ena = -1;
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switch (level) {
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case SND_SOC_BIAS_ON:
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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if (ena >= 0)
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gpio_set_value_cansleep(ena, 1);
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break;
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case SND_SOC_BIAS_OFF:
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if (ena >= 0)
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gpio_set_value_cansleep(ena, 0);
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break;
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}
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return 0;
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}
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static const struct snd_soc_dapm_widget wm1250_ev1_dapm_widgets[] = {
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SND_SOC_DAPM_ADC("ADC", "wm1250-ev1 Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_DAC("DAC", "wm1250-ev1 Playback", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_INPUT("WM1250 Input"),
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SND_SOC_DAPM_OUTPUT("WM1250 Output"),
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};
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static const struct snd_soc_dapm_route wm1250_ev1_dapm_routes[] = {
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{ "ADC", NULL, "WM1250 Input" },
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{ "WM1250 Output", NULL, "DAC" },
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};
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static int wm1250_ev1_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct wm1250_priv *wm1250 = snd_soc_component_get_drvdata(dai->component);
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switch (params_rate(params)) {
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case 8000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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1);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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1);
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break;
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case 16000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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0);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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1);
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break;
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case 32000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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1);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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0);
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break;
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case 64000:
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
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0);
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gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
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0);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct snd_soc_dai_ops wm1250_ev1_ops = {
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.hw_params = wm1250_ev1_hw_params,
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};
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#define WM1250_EV1_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
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SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_64000)
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static struct snd_soc_dai_driver wm1250_ev1_dai = {
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.name = "wm1250-ev1",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = WM1250_EV1_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = WM1250_EV1_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.ops = &wm1250_ev1_ops,
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};
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static const struct snd_soc_component_driver soc_component_dev_wm1250_ev1 = {
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.dapm_widgets = wm1250_ev1_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(wm1250_ev1_dapm_widgets),
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.dapm_routes = wm1250_ev1_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(wm1250_ev1_dapm_routes),
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.set_bias_level = wm1250_ev1_set_bias_level,
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.use_pmdown_time = 1,
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.endianness = 1,
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.non_legacy_dai_naming = 1,
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};
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static int wm1250_ev1_pdata(struct i2c_client *i2c)
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{
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struct wm1250_ev1_pdata *pdata = dev_get_platdata(&i2c->dev);
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struct wm1250_priv *wm1250;
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int i, ret;
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if (!pdata)
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return 0;
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wm1250 = devm_kzalloc(&i2c->dev, sizeof(*wm1250), GFP_KERNEL);
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if (!wm1250) {
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ret = -ENOMEM;
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goto err;
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}
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for (i = 0; i < ARRAY_SIZE(wm1250->gpios); i++) {
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wm1250->gpios[i].gpio = pdata->gpios[i];
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wm1250->gpios[i].label = wm1250_gpio_names[i];
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wm1250->gpios[i].flags = GPIOF_OUT_INIT_LOW;
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}
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wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].flags = GPIOF_OUT_INIT_HIGH;
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wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].flags = GPIOF_OUT_INIT_HIGH;
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ret = gpio_request_array(wm1250->gpios, ARRAY_SIZE(wm1250->gpios));
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if (ret != 0) {
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dev_err(&i2c->dev, "Failed to get GPIOs: %d\n", ret);
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goto err;
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}
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dev_set_drvdata(&i2c->dev, wm1250);
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return ret;
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err:
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return ret;
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}
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static void wm1250_ev1_free(struct i2c_client *i2c)
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{
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struct wm1250_priv *wm1250 = dev_get_drvdata(&i2c->dev);
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if (wm1250)
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gpio_free_array(wm1250->gpios, ARRAY_SIZE(wm1250->gpios));
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}
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static int wm1250_ev1_probe(struct i2c_client *i2c,
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const struct i2c_device_id *i2c_id)
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{
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int id, board, rev, ret;
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dev_set_drvdata(&i2c->dev, NULL);
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board = i2c_smbus_read_byte_data(i2c, 0);
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if (board < 0) {
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dev_err(&i2c->dev, "Failed to read ID: %d\n", board);
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return board;
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}
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id = (board & 0xfe) >> 2;
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rev = board & 0x3;
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if (id != 1) {
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dev_err(&i2c->dev, "Unknown board ID %d\n", id);
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return -ENODEV;
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}
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dev_info(&i2c->dev, "revision %d\n", rev + 1);
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ret = wm1250_ev1_pdata(i2c);
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if (ret != 0)
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return ret;
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ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_dev_wm1250_ev1,
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&wm1250_ev1_dai, 1);
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if (ret != 0) {
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dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
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wm1250_ev1_free(i2c);
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return ret;
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}
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return 0;
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}
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static int wm1250_ev1_remove(struct i2c_client *i2c)
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{
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wm1250_ev1_free(i2c);
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return 0;
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}
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static const struct i2c_device_id wm1250_ev1_i2c_id[] = {
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{ "wm1250-ev1", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, wm1250_ev1_i2c_id);
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static struct i2c_driver wm1250_ev1_i2c_driver = {
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.driver = {
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.name = "wm1250-ev1",
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},
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.probe = wm1250_ev1_probe,
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.remove = wm1250_ev1_remove,
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.id_table = wm1250_ev1_i2c_id,
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};
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module_i2c_driver(wm1250_ev1_i2c_driver);
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_DESCRIPTION("WM1250-EV1 audio I/O module driver");
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MODULE_LICENSE("GPL");
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