diff options
| author | Lucas Tanure <tanureal@opensource.cirrus.com> | 2021-12-17 14:57:05 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-01-05 19:08:16 +0300 |
| commit | 7b2f3eb492dac7665c75df067e4d8e4869589f4a (patch) | |
| tree | a02eec337c6068ce1377b4d5d53fddc9ecfd29ea /sound/pci/hda/cs35l41_hda_spi.c | |
| parent | 2aac550da3257ab46e8c7944365eb4a79ccbb3a1 (diff) | |
| download | linux-7b2f3eb492dac7665c75df067e4d8e4869589f4a.tar.xz | |
ALSA: hda: cs35l41: Add support for CS35L41 in HDA systems
Add support for CS35L41 using a new separated driver
that can be used in all upcoming designs
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211217115708.882525-8-tanureal@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/cs35l41_hda_spi.c')
| -rw-r--r-- | sound/pci/hda/cs35l41_hda_spi.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sound/pci/hda/cs35l41_hda_spi.c b/sound/pci/hda/cs35l41_hda_spi.c new file mode 100644 index 000000000000..77426e96c58f --- /dev/null +++ b/sound/pci/hda/cs35l41_hda_spi.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// cs35l41.c -- CS35l41 HDA SPI driver +// +// Copyright 2021 Cirrus Logic, Inc. +// +// Author: Lucas Tanure <tanureal@opensource.cirrus.com> + +#include <linux/acpi.h> +#include <linux/module.h> +#include <linux/spi/spi.h> + +#include "cs35l41_hda.h" + +static int cs35l41_hda_spi_probe(struct spi_device *spi) +{ + const char *device_name; + + /* Compare against the device name so it works for SPI, normal ACPI + * and for ACPI by spi-multi-instantiate matching cases + */ + if (strstr(dev_name(&spi->dev), "CSC3551")) + device_name = "CSC3551"; + else + return -ENODEV; + + return cs35l41_hda_probe(&spi->dev, device_name, spi->chip_select, spi->irq, + devm_regmap_init_spi(spi, &cs35l41_regmap_spi)); +} + +static int cs35l41_hda_spi_remove(struct spi_device *spi) +{ + return cs35l41_hda_remove(&spi->dev); +} + +static const struct spi_device_id cs35l41_hda_spi_id[] = { + { "cs35l41-hda", 0 }, + {} +}; + +#ifdef CONFIG_ACPI +static const struct acpi_device_id cs35l41_acpi_hda_match[] = { + { "CSC3551", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, cs35l41_acpi_hda_match); +#endif + +static struct spi_driver cs35l41_spi_driver = { + .driver = { + .name = "cs35l41_hda", + .acpi_match_table = ACPI_PTR(cs35l41_acpi_hda_match), + }, + .id_table = cs35l41_hda_spi_id, + .probe = cs35l41_hda_spi_probe, + .remove = cs35l41_hda_spi_remove, +}; + +module_spi_driver(cs35l41_spi_driver); + +MODULE_DESCRIPTION("HDA CS35L41 driver"); +MODULE_AUTHOR("Lucas Tanure <tanureal@opensource.cirrus.com>"); +MODULE_LICENSE("GPL"); |