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06b5e53c8b
Supporting multi-cs in spi drivers would require the chip_select & cs_gpiod members of struct spi_device to be an array. But changing the type of these members to array would break the spi driver functionality. To make the transition smoother introduced four new APIs to get/set the spi->chip_select & spi->cs_gpiod and replaced all spi->chip_select and spi->cs_gpiod references with get or set API calls. While adding multi-cs support in further patches the chip_select & cs_gpiod members of the spi_device structure would be converted to arrays & the "idx" parameter of the APIs would be used as array index i.e., spi->chip_select[idx] & spi->cs_gpiod[idx] respectively. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> Link: https://lore.kernel.org/r/20230310173217.3429788-9-amit.kumar-mahapatra@amd.com Signed-off-by: Mark Brown <broonie@kernel.org>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// CS35l41 HDA SPI driver
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//
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// Copyright 2021 Cirrus Logic, Inc.
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//
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// Author: Lucas Tanure <tanureal@opensource.cirrus.com>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/spi/spi.h>
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#include "cs35l41_hda.h"
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static int cs35l41_hda_spi_probe(struct spi_device *spi)
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{
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const char *device_name;
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/*
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* Compare against the device name so it works for SPI, normal ACPI
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* and for ACPI by serial-multi-instantiate matching cases.
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*/
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if (strstr(dev_name(&spi->dev), "CSC3551"))
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device_name = "CSC3551";
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else
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return -ENODEV;
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return cs35l41_hda_probe(&spi->dev, device_name, spi_get_chipselect(spi, 0), spi->irq,
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devm_regmap_init_spi(spi, &cs35l41_regmap_spi));
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}
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static void cs35l41_hda_spi_remove(struct spi_device *spi)
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{
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cs35l41_hda_remove(&spi->dev);
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}
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static const struct spi_device_id cs35l41_hda_spi_id[] = {
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{ "cs35l41-hda", 0 },
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{}
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};
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static const struct acpi_device_id cs35l41_acpi_hda_match[] = {
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{ "CSC3551", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_hda_match);
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static struct spi_driver cs35l41_spi_driver = {
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.driver = {
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.name = "cs35l41-hda",
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.acpi_match_table = cs35l41_acpi_hda_match,
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.pm = &cs35l41_hda_pm_ops,
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},
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.id_table = cs35l41_hda_spi_id,
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.probe = cs35l41_hda_spi_probe,
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.remove = cs35l41_hda_spi_remove,
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};
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module_spi_driver(cs35l41_spi_driver);
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MODULE_DESCRIPTION("HDA CS35L41 driver");
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MODULE_IMPORT_NS(SND_HDA_SCODEC_CS35L41);
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MODULE_AUTHOR("Lucas Tanure <tanureal@opensource.cirrus.com>");
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MODULE_LICENSE("GPL");
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