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![Uwe Kleine-König](/assets/img/avatar_default.png)
The value returned by an spi driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Claudius Heine <ch@denx.de> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC Acked-by: Marcus Folkesson <marcus.folkesson@gmail.com> Acked-by: Łukasz Stelmach <l.stelmach@samsung.com> Acked-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown <broonie@kernel.org>
151 lines
3.6 KiB
C
151 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* SPI bus interface to Cirrus Logic Madera codecs
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*
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* Copyright (C) 2015-2018 Cirrus Logic
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*/
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#include <linux/mfd/madera/core.h>
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#include "madera.h"
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static int madera_spi_probe(struct spi_device *spi)
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{
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const struct spi_device_id *id = spi_get_device_id(spi);
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struct madera *madera;
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const struct regmap_config *regmap_16bit_config = NULL;
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const struct regmap_config *regmap_32bit_config = NULL;
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const void *of_data;
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unsigned long type;
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const char *name;
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int ret;
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of_data = of_device_get_match_data(&spi->dev);
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if (of_data)
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type = (unsigned long)of_data;
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else
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type = id->driver_data;
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switch (type) {
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case CS47L15:
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if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
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regmap_16bit_config = &cs47l15_16bit_spi_regmap;
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regmap_32bit_config = &cs47l15_32bit_spi_regmap;
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}
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break;
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case CS47L35:
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if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
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regmap_16bit_config = &cs47l35_16bit_spi_regmap;
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regmap_32bit_config = &cs47l35_32bit_spi_regmap;
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}
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break;
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case CS47L85:
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case WM1840:
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if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
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regmap_16bit_config = &cs47l85_16bit_spi_regmap;
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regmap_32bit_config = &cs47l85_32bit_spi_regmap;
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}
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break;
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case CS47L90:
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case CS47L91:
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if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
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regmap_16bit_config = &cs47l90_16bit_spi_regmap;
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regmap_32bit_config = &cs47l90_32bit_spi_regmap;
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}
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break;
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case CS42L92:
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case CS47L92:
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case CS47L93:
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if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
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regmap_16bit_config = &cs47l92_16bit_spi_regmap;
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regmap_32bit_config = &cs47l92_32bit_spi_regmap;
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}
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break;
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default:
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dev_err(&spi->dev,
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"Unknown Madera SPI device type %ld\n", type);
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return -EINVAL;
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}
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name = madera_name_from_type(type);
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if (!regmap_16bit_config) {
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/* it's polite to say which codec isn't built into the kernel */
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dev_err(&spi->dev,
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"Kernel does not include support for %s\n", name);
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return -EINVAL;
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}
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madera = devm_kzalloc(&spi->dev, sizeof(*madera), GFP_KERNEL);
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if (!madera)
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return -ENOMEM;
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madera->regmap = devm_regmap_init_spi(spi, regmap_16bit_config);
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if (IS_ERR(madera->regmap)) {
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ret = PTR_ERR(madera->regmap);
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dev_err(&spi->dev,
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"Failed to allocate 16-bit register map: %d\n", ret);
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return ret;
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}
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madera->regmap_32bit = devm_regmap_init_spi(spi, regmap_32bit_config);
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if (IS_ERR(madera->regmap_32bit)) {
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ret = PTR_ERR(madera->regmap_32bit);
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dev_err(&spi->dev,
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"Failed to allocate 32-bit register map: %d\n", ret);
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return ret;
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}
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madera->type = type;
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madera->type_name = name;
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madera->dev = &spi->dev;
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madera->irq = spi->irq;
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return madera_dev_init(madera);
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}
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static void madera_spi_remove(struct spi_device *spi)
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{
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struct madera *madera = spi_get_drvdata(spi);
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madera_dev_exit(madera);
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}
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static const struct spi_device_id madera_spi_ids[] = {
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{ "cs47l15", CS47L15 },
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{ "cs47l35", CS47L35 },
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{ "cs47l85", CS47L85 },
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{ "cs47l90", CS47L90 },
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{ "cs47l91", CS47L91 },
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{ "cs42l92", CS42L92 },
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{ "cs47l92", CS47L92 },
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{ "cs47l93", CS47L93 },
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{ "wm1840", WM1840 },
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{ }
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};
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MODULE_DEVICE_TABLE(spi, madera_spi_ids);
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static struct spi_driver madera_spi_driver = {
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.driver = {
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.name = "madera",
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.pm = &madera_pm_ops,
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.of_match_table = of_match_ptr(madera_of_match),
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},
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.probe = madera_spi_probe,
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.remove = madera_spi_remove,
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.id_table = madera_spi_ids,
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};
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module_spi_driver(madera_spi_driver);
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MODULE_DESCRIPTION("Madera SPI bus interface");
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MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
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MODULE_LICENSE("GPL v2");
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