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01192ad23b
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/20230315150745.67084-64-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
233 lines
6.2 KiB
C
233 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
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//
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// Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
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//
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// based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
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// which is Copyright 2009 Simtec Electronics
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// and on sound/soc/imx/phycore-ac97.c which is
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// Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <asm/mach-types.h>
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#include "../codecs/tlv320aic23.h"
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#include "imx-ssi.h"
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#include "imx-audmux.h"
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#define CODEC_CLOCK 12000000
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static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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int ret;
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ret = snd_soc_dai_set_sysclk(codec_dai, 0,
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CODEC_CLOCK, SND_SOC_CLOCK_OUT);
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if (ret) {
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dev_err(cpu_dai->dev,
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"Failed to set the codec sysclk.\n");
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return ret;
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}
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snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
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ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
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SND_SOC_CLOCK_IN);
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/* fsl_ssi lacks the set_sysclk ops */
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if (ret && ret != -EINVAL) {
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dev_err(cpu_dai->dev,
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"Can't set the IMX_SSP_SYS_CLK CPU system clock.\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_ops eukrea_tlv320_snd_ops = {
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.hw_params = eukrea_tlv320_hw_params,
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};
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SND_SOC_DAILINK_DEFS(hifi,
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DAILINK_COMP_ARRAY(COMP_EMPTY()),
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DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic23-hifi")),
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DAILINK_COMP_ARRAY(COMP_EMPTY()));
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static struct snd_soc_dai_link eukrea_tlv320_dai = {
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.name = "tlv320aic23",
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.stream_name = "TLV320AIC23",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBP_CFP,
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.ops = &eukrea_tlv320_snd_ops,
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SND_SOC_DAILINK_REG(hifi),
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};
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static struct snd_soc_card eukrea_tlv320 = {
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.owner = THIS_MODULE,
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.dai_link = &eukrea_tlv320_dai,
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.num_links = 1,
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};
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static int eukrea_tlv320_probe(struct platform_device *pdev)
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{
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int ret;
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int int_port = 0, ext_port;
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struct device_node *np = pdev->dev.of_node;
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struct device_node *ssi_np = NULL, *codec_np = NULL, *tmp_np = NULL;
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eukrea_tlv320.dev = &pdev->dev;
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if (np) {
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ret = snd_soc_of_parse_card_name(&eukrea_tlv320,
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"eukrea,model");
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if (ret) {
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dev_err(&pdev->dev,
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"eukrea,model node missing or invalid.\n");
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goto err;
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}
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ssi_np = of_parse_phandle(pdev->dev.of_node,
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"ssi-controller", 0);
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if (!ssi_np) {
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dev_err(&pdev->dev,
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"ssi-controller missing or invalid.\n");
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ret = -ENODEV;
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goto err;
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}
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codec_np = of_parse_phandle(ssi_np, "codec-handle", 0);
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if (codec_np)
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eukrea_tlv320_dai.codecs->of_node = codec_np;
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else
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dev_err(&pdev->dev, "codec-handle node missing or invalid.\n");
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ret = of_property_read_u32(np, "fsl,mux-int-port", &int_port);
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if (ret) {
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dev_err(&pdev->dev,
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"fsl,mux-int-port node missing or invalid.\n");
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goto err;
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}
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ret = of_property_read_u32(np, "fsl,mux-ext-port", &ext_port);
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if (ret) {
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dev_err(&pdev->dev,
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"fsl,mux-ext-port node missing or invalid.\n");
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goto err;
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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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eukrea_tlv320_dai.cpus->of_node = ssi_np;
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eukrea_tlv320_dai.platforms->of_node = ssi_np;
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} else {
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eukrea_tlv320_dai.cpus->dai_name = "imx-ssi.0";
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eukrea_tlv320_dai.platforms->name = "imx-ssi.0";
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eukrea_tlv320_dai.codecs->name = "tlv320aic23-codec.0-001a";
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eukrea_tlv320.name = "cpuimx-audio";
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}
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if (machine_is_eukrea_cpuimx27() ||
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(tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx21-audmux"))) {
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imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
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IMX_AUDMUX_V1_PCR_SYN |
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IMX_AUDMUX_V1_PCR_TFSDIR |
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IMX_AUDMUX_V1_PCR_TCLKDIR |
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IMX_AUDMUX_V1_PCR_RFSDIR |
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IMX_AUDMUX_V1_PCR_RCLKDIR |
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IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
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IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
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IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
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);
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imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
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IMX_AUDMUX_V1_PCR_SYN |
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IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
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);
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of_node_put(tmp_np);
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} else if (machine_is_eukrea_cpuimx25sd() ||
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machine_is_eukrea_cpuimx35sd() ||
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machine_is_eukrea_cpuimx51sd() ||
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(tmp_np = of_find_compatible_node(NULL, NULL, "fsl,imx31-audmux"))) {
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if (!np)
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ext_port = machine_is_eukrea_cpuimx25sd() ?
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4 : 3;
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imx_audmux_v2_configure_port(int_port,
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IMX_AUDMUX_V2_PTCR_SYN |
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IMX_AUDMUX_V2_PTCR_TFSDIR |
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IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TCLKDIR |
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IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
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IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
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);
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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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);
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of_node_put(tmp_np);
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} else {
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if (np) {
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/* The eukrea,asoc-tlv320 driver was explicitly
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* requested (through the device tree).
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*/
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dev_err(&pdev->dev,
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"Missing or invalid audmux DT node.\n");
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return -ENODEV;
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} else {
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/* Return happy.
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* We might run on a totally different machine.
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*/
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return 0;
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}
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}
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ret = snd_soc_register_card(&eukrea_tlv320);
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err:
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if (ret)
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
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of_node_put(ssi_np);
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return ret;
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}
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static void eukrea_tlv320_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_card(&eukrea_tlv320);
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}
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static const struct of_device_id imx_tlv320_dt_ids[] = {
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{ .compatible = "eukrea,asoc-tlv320"},
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, imx_tlv320_dt_ids);
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static struct platform_driver eukrea_tlv320_driver = {
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.driver = {
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.name = "eukrea_tlv320",
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.of_match_table = imx_tlv320_dt_ids,
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},
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.probe = eukrea_tlv320_probe,
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.remove_new = eukrea_tlv320_remove,
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};
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module_platform_driver(eukrea_tlv320_driver);
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MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
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MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:eukrea_tlv320");
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