| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | // |
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| 3 | // cs35l45-spi.c -- CS35L45 SPI driver |
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| 4 | // |
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| 5 | // Copyright 2019-2022 Cirrus Logic, Inc. |
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| 6 | // |
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| 7 | // Author: James Schulman <james.schulman@cirrus.com> |
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| 8 | |
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| 9 | #include <linux/device.h> |
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| 10 | #include <linux/module.h> |
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| 11 | #include <linux/regmap.h> |
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| 12 | #include <linux/spi/spi.h> |
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| 13 | |
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| 14 | #include "cs35l45.h" |
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| 15 | |
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| 16 | static int cs35l45_spi_probe(struct spi_device *spi) |
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| 17 | { |
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| 18 | struct cs35l45_private *cs35l45; |
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| 19 | struct device *dev = &spi->dev; |
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| 20 | int ret; |
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| 21 | |
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| 22 | cs35l45 = devm_kzalloc(dev, size: sizeof(struct cs35l45_private), GFP_KERNEL); |
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| 23 | if (cs35l45 == NULL) |
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| 24 | return -ENOMEM; |
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| 25 | |
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| 26 | spi->max_speed_hz = CS35L45_SPI_MAX_FREQ; |
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| 27 | spi_setup(spi); |
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| 28 | |
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| 29 | spi_set_drvdata(spi, data: cs35l45); |
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| 30 | cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap); |
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| 31 | if (IS_ERR(ptr: cs35l45->regmap)) { |
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| 32 | ret = PTR_ERR(ptr: cs35l45->regmap); |
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| 33 | dev_err(dev, "Failed to allocate register map: %d\n" , ret); |
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| 34 | return ret; |
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| 35 | } |
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| 36 | |
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| 37 | cs35l45->dev = dev; |
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| 38 | cs35l45->irq = spi->irq; |
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| 39 | cs35l45->bus_type = CONTROL_BUS_SPI; |
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| 40 | |
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| 41 | return cs35l45_probe(cs35l45); |
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| 42 | } |
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| 43 | |
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| 44 | static void cs35l45_spi_remove(struct spi_device *spi) |
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| 45 | { |
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| 46 | struct cs35l45_private *cs35l45 = spi_get_drvdata(spi); |
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| 47 | |
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| 48 | cs35l45_remove(cs35l45); |
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| 49 | } |
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| 50 | |
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| 51 | static const struct of_device_id cs35l45_of_match[] = { |
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| 52 | { .compatible = "cirrus,cs35l45" }, |
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| 53 | {}, |
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| 54 | }; |
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| 55 | MODULE_DEVICE_TABLE(of, cs35l45_of_match); |
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| 56 | |
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| 57 | static const struct spi_device_id cs35l45_id_spi[] = { |
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| 58 | { "cs35l45" , 0 }, |
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| 59 | {} |
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| 60 | }; |
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| 61 | MODULE_DEVICE_TABLE(spi, cs35l45_id_spi); |
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| 62 | |
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| 63 | static struct spi_driver cs35l45_spi_driver = { |
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| 64 | .driver = { |
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| 65 | .name = "cs35l45" , |
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| 66 | .of_match_table = cs35l45_of_match, |
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| 67 | .pm = pm_ptr(&cs35l45_pm_ops), |
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| 68 | }, |
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| 69 | .id_table = cs35l45_id_spi, |
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| 70 | .probe = cs35l45_spi_probe, |
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| 71 | .remove = cs35l45_spi_remove, |
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| 72 | }; |
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| 73 | module_spi_driver(cs35l45_spi_driver); |
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| 74 | |
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| 75 | MODULE_DESCRIPTION("SPI CS35L45 driver" ); |
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| 76 | MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>" ); |
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| 77 | MODULE_LICENSE("GPL" ); |
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| 78 | MODULE_IMPORT_NS(SND_SOC_CS35L45); |
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| 79 | |
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