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![Uwe Kleine-König](/assets/img/avatar_default.png)
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Link: https://lore.kernel.org/r/20230315150745.67084-79-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
224 lines
5.8 KiB
C
224 lines
5.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// Copyright 2012 Freescale Semiconductor, Inc.
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// Copyright 2012 Linaro Ltd.
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/i2c.h>
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#include <linux/clk.h>
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#include <sound/soc.h>
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#include "../codecs/sgtl5000.h"
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#include "imx-audmux.h"
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#define DAI_NAME_SIZE 32
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struct imx_sgtl5000_data {
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struct snd_soc_dai_link dai;
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struct snd_soc_card card;
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char codec_dai_name[DAI_NAME_SIZE];
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char platform_name[DAI_NAME_SIZE];
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struct clk *codec_clk;
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unsigned int clk_frequency;
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};
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static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(rtd->card);
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struct device *dev = rtd->card->dev;
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int ret;
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ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), SGTL5000_SYSCLK,
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data->clk_frequency, SND_SOC_CLOCK_IN);
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if (ret) {
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dev_err(dev, "could not set codec driver clock params\n");
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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 const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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SND_SOC_DAPM_LINE("Line In Jack", NULL),
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_SPK("Line Out Jack", NULL),
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SND_SOC_DAPM_SPK("Ext Spk", NULL),
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};
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static int imx_sgtl5000_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct device_node *ssi_np, *codec_np;
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struct platform_device *ssi_pdev;
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struct i2c_client *codec_dev;
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struct imx_sgtl5000_data *data = NULL;
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struct snd_soc_dai_link_component *comp;
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int int_port, ext_port;
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int ret;
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ret = of_property_read_u32(np, "mux-int-port", &int_port);
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if (ret) {
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dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
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return ret;
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}
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ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
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if (ret) {
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dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
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return ret;
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}
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/*
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* The port numbering in the hardware manual starts at 1, while
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* the audmux API expects it starts at 0.
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*/
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int_port--;
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ext_port--;
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ret = imx_audmux_v2_configure_port(int_port,
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IMX_AUDMUX_V2_PTCR_SYN |
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IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TFSDIR |
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IMX_AUDMUX_V2_PTCR_TCLKDIR,
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IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
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if (ret) {
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dev_err(&pdev->dev, "audmux internal port setup failed\n");
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return ret;
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}
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ret = imx_audmux_v2_configure_port(ext_port,
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IMX_AUDMUX_V2_PTCR_SYN,
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IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
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if (ret) {
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dev_err(&pdev->dev, "audmux external port setup failed\n");
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return ret;
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}
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ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
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codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
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if (!ssi_np || !codec_np) {
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dev_err(&pdev->dev, "phandle missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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ssi_pdev = of_find_device_by_node(ssi_np);
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if (!ssi_pdev) {
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dev_dbg(&pdev->dev, "failed to find SSI platform device\n");
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ret = -EPROBE_DEFER;
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goto fail;
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}
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put_device(&ssi_pdev->dev);
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codec_dev = of_find_i2c_device_by_node(codec_np);
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if (!codec_dev) {
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dev_dbg(&pdev->dev, "failed to find codec platform device\n");
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ret = -EPROBE_DEFER;
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goto fail;
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}
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data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
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if (!data) {
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ret = -ENOMEM;
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goto put_device;
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}
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comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
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if (!comp) {
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ret = -ENOMEM;
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goto put_device;
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}
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data->codec_clk = clk_get(&codec_dev->dev, NULL);
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if (IS_ERR(data->codec_clk)) {
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ret = PTR_ERR(data->codec_clk);
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goto put_device;
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}
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data->clk_frequency = clk_get_rate(data->codec_clk);
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data->dai.cpus = &comp[0];
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data->dai.codecs = &comp[1];
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data->dai.platforms = &comp[2];
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data->dai.num_cpus = 1;
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data->dai.num_codecs = 1;
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data->dai.num_platforms = 1;
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data->dai.name = "HiFi";
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data->dai.stream_name = "HiFi";
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data->dai.codecs->dai_name = "sgtl5000";
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data->dai.codecs->of_node = codec_np;
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data->dai.cpus->of_node = ssi_np;
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data->dai.platforms->of_node = ssi_np;
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data->dai.init = &imx_sgtl5000_dai_init;
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data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBP_CFP;
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data->card.dev = &pdev->dev;
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ret = snd_soc_of_parse_card_name(&data->card, "model");
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if (ret)
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goto put_device;
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ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
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if (ret)
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goto put_device;
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data->card.num_links = 1;
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data->card.owner = THIS_MODULE;
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data->card.dai_link = &data->dai;
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data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
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data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
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platform_set_drvdata(pdev, &data->card);
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snd_soc_card_set_drvdata(&data->card, data);
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ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
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if (ret) {
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dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
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goto put_device;
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}
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of_node_put(ssi_np);
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of_node_put(codec_np);
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return 0;
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put_device:
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put_device(&codec_dev->dev);
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fail:
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if (data && !IS_ERR(data->codec_clk))
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clk_put(data->codec_clk);
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of_node_put(ssi_np);
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of_node_put(codec_np);
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return ret;
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}
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static void imx_sgtl5000_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);
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clk_put(data->codec_clk);
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}
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static const struct of_device_id imx_sgtl5000_dt_ids[] = {
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{ .compatible = "fsl,imx-audio-sgtl5000", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
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static struct platform_driver imx_sgtl5000_driver = {
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.driver = {
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.name = "imx-sgtl5000",
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.pm = &snd_soc_pm_ops,
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.of_match_table = imx_sgtl5000_dt_ids,
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},
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.probe = imx_sgtl5000_probe,
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.remove_new = imx_sgtl5000_remove,
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};
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module_platform_driver(imx_sgtl5000_driver);
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MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
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MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:imx-sgtl5000");
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