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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/20230315150745.67084-86-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
656 lines
16 KiB
C
656 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// test-component.c -- Test Audio Component driver
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//
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// Copyright (C) 2020 Renesas Electronics Corporation
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// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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#include <linux/slab.h>
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#include <linux/of_device.h>
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#include <linux/of_graph.h>
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#include <linux/module.h>
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#include <linux/workqueue.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#define TEST_NAME_LEN 32
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struct test_dai_name {
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char name[TEST_NAME_LEN];
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char name_playback[TEST_NAME_LEN];
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char name_capture[TEST_NAME_LEN];
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};
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struct test_priv {
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struct device *dev;
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struct snd_pcm_substream *substream;
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struct delayed_work dwork;
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struct snd_soc_component_driver *component_driver;
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struct snd_soc_dai_driver *dai_driver;
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struct test_dai_name *name;
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};
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struct test_adata {
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u32 is_cpu:1;
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u32 cmp_v:1;
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u32 dai_v:1;
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};
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#define mile_stone(d) dev_info((d)->dev, "%s() : %s", __func__, (d)->driver->name)
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#define mile_stone_x(dev) dev_info(dev, "%s()", __func__)
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static int test_dai_set_sysclk(struct snd_soc_dai *dai,
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int clk_id, unsigned int freq, int dir)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
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unsigned int freq_in, unsigned int freq_out)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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{
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unsigned int format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
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unsigned int clock = fmt & SND_SOC_DAIFMT_CLOCK_MASK;
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unsigned int inv = fmt & SND_SOC_DAIFMT_INV_MASK;
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unsigned int master = fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
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char *str;
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dev_info(dai->dev, "name : %s", dai->name);
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str = "unknown";
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switch (format) {
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case SND_SOC_DAIFMT_I2S:
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str = "i2s";
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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str = "right_j";
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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str = "left_j";
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break;
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case SND_SOC_DAIFMT_DSP_A:
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str = "dsp_a";
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break;
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case SND_SOC_DAIFMT_DSP_B:
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str = "dsp_b";
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break;
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case SND_SOC_DAIFMT_AC97:
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str = "ac97";
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break;
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case SND_SOC_DAIFMT_PDM:
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str = "pdm";
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break;
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}
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dev_info(dai->dev, "format : %s", str);
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if (clock == SND_SOC_DAIFMT_CONT)
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str = "continuous";
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else
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str = "gated";
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dev_info(dai->dev, "clock : %s", str);
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str = "unknown";
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switch (master) {
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case SND_SOC_DAIFMT_BP_FP:
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str = "clk provider, frame provider";
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break;
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case SND_SOC_DAIFMT_BC_FP:
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str = "clk consumer, frame provider";
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break;
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case SND_SOC_DAIFMT_BP_FC:
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str = "clk provider, frame consumer";
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break;
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case SND_SOC_DAIFMT_BC_FC:
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str = "clk consumer, frame consumer";
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break;
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}
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dev_info(dai->dev, "clock : codec is %s", str);
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str = "unknown";
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switch (inv) {
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case SND_SOC_DAIFMT_NB_NF:
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str = "normal bit, normal frame";
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break;
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case SND_SOC_DAIFMT_NB_IF:
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str = "normal bit, invert frame";
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break;
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case SND_SOC_DAIFMT_IB_NF:
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str = "invert bit, normal frame";
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break;
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case SND_SOC_DAIFMT_IB_IF:
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str = "invert bit, invert frame";
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break;
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}
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dev_info(dai->dev, "signal : %s", str);
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return 0;
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}
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static int test_dai_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
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{
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mile_stone(dai);
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return 0;
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}
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static void test_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
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{
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mile_stone(dai);
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}
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static int test_dai_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
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{
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mile_stone(dai);
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return 0;
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}
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static int test_dai_bespoke_trigger(struct snd_pcm_substream *substream,
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int cmd, struct snd_soc_dai *dai)
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{
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mile_stone(dai);
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return 0;
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}
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static u64 test_dai_formats =
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/*
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* Select below from Sound Card, not auto
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* SND_SOC_POSSIBLE_DAIFMT_BP_FP
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* SND_SOC_POSSIBLE_DAIFMT_BC_FP
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* SND_SOC_POSSIBLE_DAIFMT_BP_FC
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* SND_SOC_POSSIBLE_DAIFMT_BC_FC
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*/
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SND_SOC_POSSIBLE_DAIFMT_I2S |
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SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
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SND_SOC_POSSIBLE_DAIFMT_LEFT_J |
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SND_SOC_POSSIBLE_DAIFMT_DSP_A |
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SND_SOC_POSSIBLE_DAIFMT_DSP_B |
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SND_SOC_POSSIBLE_DAIFMT_AC97 |
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SND_SOC_POSSIBLE_DAIFMT_PDM |
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SND_SOC_POSSIBLE_DAIFMT_NB_NF |
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SND_SOC_POSSIBLE_DAIFMT_NB_IF |
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SND_SOC_POSSIBLE_DAIFMT_IB_NF |
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SND_SOC_POSSIBLE_DAIFMT_IB_IF;
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static const struct snd_soc_dai_ops test_ops = {
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.set_fmt = test_dai_set_fmt,
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.startup = test_dai_startup,
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.shutdown = test_dai_shutdown,
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.auto_selectable_formats = &test_dai_formats,
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.num_auto_selectable_formats = 1,
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};
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static const struct snd_soc_dai_ops test_verbose_ops = {
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.set_sysclk = test_dai_set_sysclk,
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.set_pll = test_dai_set_pll,
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.set_clkdiv = test_dai_set_clkdiv,
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.set_fmt = test_dai_set_fmt,
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.mute_stream = test_dai_mute_stream,
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.startup = test_dai_startup,
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.shutdown = test_dai_shutdown,
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.hw_params = test_dai_hw_params,
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.hw_free = test_dai_hw_free,
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.trigger = test_dai_trigger,
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.bespoke_trigger = test_dai_bespoke_trigger,
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.auto_selectable_formats = &test_dai_formats,
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.num_auto_selectable_formats = 1,
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};
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#define STUB_RATES SNDRV_PCM_RATE_8000_384000
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#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
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SNDRV_PCM_FMTBIT_U8 | \
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SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_U16_LE | \
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SNDRV_PCM_FMTBIT_S24_LE | \
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SNDRV_PCM_FMTBIT_S24_3LE | \
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SNDRV_PCM_FMTBIT_U24_LE | \
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SNDRV_PCM_FMTBIT_S32_LE | \
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SNDRV_PCM_FMTBIT_U32_LE)
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static int test_component_probe(struct snd_soc_component *component)
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{
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mile_stone(component);
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return 0;
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}
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static void test_component_remove(struct snd_soc_component *component)
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{
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mile_stone(component);
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}
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static int test_component_suspend(struct snd_soc_component *component)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_resume(struct snd_soc_component *component)
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{
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mile_stone(component);
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return 0;
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}
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#define PREALLOC_BUFFER (32 * 1024)
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static int test_component_pcm_construct(struct snd_soc_component *component,
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struct snd_soc_pcm_runtime *rtd)
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{
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mile_stone(component);
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snd_pcm_set_managed_buffer_all(
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rtd->pcm,
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SNDRV_DMA_TYPE_DEV,
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rtd->card->snd_card->dev,
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PREALLOC_BUFFER, PREALLOC_BUFFER);
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return 0;
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}
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static void test_component_pcm_destruct(struct snd_soc_component *component,
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struct snd_pcm *pcm)
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{
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mile_stone(component);
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}
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static int test_component_set_sysclk(struct snd_soc_component *component,
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int clk_id, int source, unsigned int freq, int dir)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_set_pll(struct snd_soc_component *component, int pll_id,
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int source, unsigned int freq_in, unsigned int freq_out)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_set_jack(struct snd_soc_component *component,
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struct snd_soc_jack *jack, void *data)
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{
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mile_stone(component);
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return 0;
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}
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static void test_component_seq_notifier(struct snd_soc_component *component,
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enum snd_soc_dapm_type type, int subseq)
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{
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mile_stone(component);
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}
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static int test_component_stream_event(struct snd_soc_component *component, int event)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_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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mile_stone(component);
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return 0;
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}
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static const struct snd_pcm_hardware test_component_hardware = {
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/* Random values to keep userspace happy when checking constraints */
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.info = SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID,
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.buffer_bytes_max = 32 * 1024,
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.period_bytes_min = 32,
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.period_bytes_max = 8192,
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.periods_min = 1,
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.periods_max = 128,
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.fifo_size = 256,
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};
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static int test_component_open(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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mile_stone(component);
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/* BE's dont need dummy params */
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if (!rtd->dai_link->no_pcm)
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snd_soc_set_runtime_hwparams(substream, &test_component_hardware);
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return 0;
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}
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static int test_component_close(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_ioctl(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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unsigned int cmd, void *arg)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_hw_params(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_hw_free(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_prepare(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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mile_stone(component);
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return 0;
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}
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static void test_component_timer_stop(struct test_priv *priv)
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{
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cancel_delayed_work(&priv->dwork);
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}
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static void test_component_timer_start(struct test_priv *priv)
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{
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schedule_delayed_work(&priv->dwork, msecs_to_jiffies(10));
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}
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static void test_component_dwork(struct work_struct *work)
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{
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struct test_priv *priv = container_of(work, struct test_priv, dwork.work);
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if (priv->substream)
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snd_pcm_period_elapsed(priv->substream);
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test_component_timer_start(priv);
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}
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static int test_component_trigger(struct snd_soc_component *component,
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struct snd_pcm_substream *substream, int cmd)
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{
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struct test_priv *priv = dev_get_drvdata(component->dev);
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mile_stone(component);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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test_component_timer_start(priv);
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priv->substream = substream; /* set substream later */
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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priv->substream = NULL;
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test_component_timer_stop(priv);
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}
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return 0;
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}
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static int test_component_sync_stop(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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mile_stone(component);
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return 0;
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}
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static snd_pcm_uframes_t test_component_pointer(struct snd_soc_component *component,
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struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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static int pointer;
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if (!runtime)
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return 0;
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pointer += 10;
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if (pointer > PREALLOC_BUFFER)
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pointer = 0;
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/* mile_stone(component); */
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return bytes_to_frames(runtime, pointer);
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}
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static int test_component_get_time_info(struct snd_soc_component *component,
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struct snd_pcm_substream *substream,
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struct timespec64 *system_ts,
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struct timespec64 *audio_ts,
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struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
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struct snd_pcm_audio_tstamp_report *audio_tstamp_report)
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{
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mile_stone(component);
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return 0;
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}
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static int test_component_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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mile_stone_x(rtd->dev);
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return 0;
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}
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/* CPU */
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static const struct test_adata test_cpu = { .is_cpu = 1, .cmp_v = 0, .dai_v = 0, };
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static const struct test_adata test_cpu_vv = { .is_cpu = 1, .cmp_v = 1, .dai_v = 1, };
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static const struct test_adata test_cpu_nv = { .is_cpu = 1, .cmp_v = 0, .dai_v = 1, };
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static const struct test_adata test_cpu_vn = { .is_cpu = 1, .cmp_v = 1, .dai_v = 0, };
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/* Codec */
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static const struct test_adata test_codec = { .is_cpu = 0, .cmp_v = 0, .dai_v = 0, };
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static const struct test_adata test_codec_vv = { .is_cpu = 0, .cmp_v = 1, .dai_v = 1, };
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static const struct test_adata test_codec_nv = { .is_cpu = 0, .cmp_v = 0, .dai_v = 1, };
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static const struct test_adata test_codec_vn = { .is_cpu = 0, .cmp_v = 1, .dai_v = 0, };
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static const struct of_device_id test_of_match[] = {
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{ .compatible = "test-cpu", .data = (void *)&test_cpu, },
|
|
{ .compatible = "test-cpu-verbose", .data = (void *)&test_cpu_vv, },
|
|
{ .compatible = "test-cpu-verbose-dai", .data = (void *)&test_cpu_nv, },
|
|
{ .compatible = "test-cpu-verbose-component", .data = (void *)&test_cpu_vn, },
|
|
{ .compatible = "test-codec", .data = (void *)&test_codec, },
|
|
{ .compatible = "test-codec-verbose", .data = (void *)&test_codec_vv, },
|
|
{ .compatible = "test-codec-verbose-dai", .data = (void *)&test_codec_nv, },
|
|
{ .compatible = "test-codec-verbose-component", .data = (void *)&test_codec_vn, },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, test_of_match);
|
|
|
|
static const struct snd_soc_dapm_widget widgets[] = {
|
|
/*
|
|
* FIXME
|
|
*
|
|
* Just IN/OUT is OK for now,
|
|
* but need to be updated ?
|
|
*/
|
|
SND_SOC_DAPM_INPUT("IN"),
|
|
SND_SOC_DAPM_OUTPUT("OUT"),
|
|
};
|
|
|
|
static int test_driver_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *node = dev->of_node;
|
|
struct device_node *ep;
|
|
const struct test_adata *adata = of_device_get_match_data(&pdev->dev);
|
|
struct snd_soc_component_driver *cdriv;
|
|
struct snd_soc_dai_driver *ddriv;
|
|
struct test_dai_name *dname;
|
|
struct test_priv *priv;
|
|
int num, ret, i;
|
|
|
|
num = of_graph_get_endpoint_count(node);
|
|
if (!num) {
|
|
dev_err(dev, "no port exits\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
cdriv = devm_kzalloc(dev, sizeof(*cdriv), GFP_KERNEL);
|
|
ddriv = devm_kzalloc(dev, sizeof(*ddriv) * num, GFP_KERNEL);
|
|
dname = devm_kzalloc(dev, sizeof(*dname) * num, GFP_KERNEL);
|
|
if (!priv || !cdriv || !ddriv || !dname || !adata)
|
|
return -EINVAL;
|
|
|
|
priv->dev = dev;
|
|
priv->component_driver = cdriv;
|
|
priv->dai_driver = ddriv;
|
|
priv->name = dname;
|
|
|
|
INIT_DELAYED_WORK(&priv->dwork, test_component_dwork);
|
|
dev_set_drvdata(dev, priv);
|
|
|
|
if (adata->is_cpu) {
|
|
cdriv->name = "test_cpu";
|
|
cdriv->pcm_construct = test_component_pcm_construct;
|
|
cdriv->pointer = test_component_pointer;
|
|
cdriv->trigger = test_component_trigger;
|
|
cdriv->legacy_dai_naming = 1;
|
|
} else {
|
|
cdriv->name = "test_codec";
|
|
cdriv->idle_bias_on = 1;
|
|
cdriv->endianness = 1;
|
|
}
|
|
|
|
cdriv->open = test_component_open;
|
|
cdriv->dapm_widgets = widgets;
|
|
cdriv->num_dapm_widgets = ARRAY_SIZE(widgets);
|
|
|
|
if (adata->cmp_v) {
|
|
cdriv->probe = test_component_probe;
|
|
cdriv->remove = test_component_remove;
|
|
cdriv->suspend = test_component_suspend;
|
|
cdriv->resume = test_component_resume;
|
|
cdriv->set_sysclk = test_component_set_sysclk;
|
|
cdriv->set_pll = test_component_set_pll;
|
|
cdriv->set_jack = test_component_set_jack;
|
|
cdriv->seq_notifier = test_component_seq_notifier;
|
|
cdriv->stream_event = test_component_stream_event;
|
|
cdriv->set_bias_level = test_component_set_bias_level;
|
|
cdriv->close = test_component_close;
|
|
cdriv->ioctl = test_component_ioctl;
|
|
cdriv->hw_params = test_component_hw_params;
|
|
cdriv->hw_free = test_component_hw_free;
|
|
cdriv->prepare = test_component_prepare;
|
|
cdriv->sync_stop = test_component_sync_stop;
|
|
cdriv->get_time_info = test_component_get_time_info;
|
|
cdriv->be_hw_params_fixup = test_component_be_hw_params_fixup;
|
|
|
|
if (adata->is_cpu)
|
|
cdriv->pcm_destruct = test_component_pcm_destruct;
|
|
}
|
|
|
|
i = 0;
|
|
for_each_endpoint_of_node(node, ep) {
|
|
snprintf(dname[i].name, TEST_NAME_LEN, "%s.%d", node->name, i);
|
|
ddriv[i].name = dname[i].name;
|
|
|
|
snprintf(dname[i].name_playback, TEST_NAME_LEN, "DAI%d Playback", i);
|
|
ddriv[i].playback.stream_name = dname[i].name_playback;
|
|
ddriv[i].playback.channels_min = 1;
|
|
ddriv[i].playback.channels_max = 384;
|
|
ddriv[i].playback.rates = STUB_RATES;
|
|
ddriv[i].playback.formats = STUB_FORMATS;
|
|
|
|
snprintf(dname[i].name_capture, TEST_NAME_LEN, "DAI%d Capture", i);
|
|
ddriv[i].capture.stream_name = dname[i].name_capture;
|
|
ddriv[i].capture.channels_min = 1;
|
|
ddriv[i].capture.channels_max = 384;
|
|
ddriv[i].capture.rates = STUB_RATES;
|
|
ddriv[i].capture.formats = STUB_FORMATS;
|
|
|
|
if (adata->dai_v)
|
|
ddriv[i].ops = &test_verbose_ops;
|
|
else
|
|
ddriv[i].ops = &test_ops;
|
|
|
|
i++;
|
|
}
|
|
|
|
ret = devm_snd_soc_register_component(dev, cdriv, ddriv, num);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mile_stone_x(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void test_driver_remove(struct platform_device *pdev)
|
|
{
|
|
mile_stone_x(&pdev->dev);
|
|
}
|
|
|
|
static struct platform_driver test_driver = {
|
|
.driver = {
|
|
.name = "test-component",
|
|
.of_match_table = test_of_match,
|
|
},
|
|
.probe = test_driver_probe,
|
|
.remove_new = test_driver_remove,
|
|
};
|
|
module_platform_driver(test_driver);
|
|
|
|
MODULE_ALIAS("platform:asoc-test-component");
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|
|
MODULE_DESCRIPTION("ASoC Test Component");
|
|
MODULE_LICENSE("GPL v2");
|