sound/soc/codecs/tlv320aic32x4-spi.c

   1 /* SPDX-License-Identifier: GPL-2.0
   2  *
   3  * Copyright 2011-2019 NW Digital Radio
   4  *
   5  * Author: Annaliese McDermond <nh6z@nh6z.net>
   6  *
   7  * Based on sound/soc/codecs/wm8974 and TI driver for kernel 2.6.27.
   8  *
   9  */
  10
  11 #include <linux/spi/spi.h>
  12 #include <linux/module.h>
  13 #include <linux/of.h>
  14 #include <linux/regmap.h>
  15 #include <sound/soc.h>
  16
  17 #include "tlv320aic32x4.h"
  18
  19 static const struct of_device_id aic32x4_of_id[];
  20
  21 static int aic32x4_spi_probe(struct spi_device *spi)
  22 {
  23         struct regmap *regmap;
  24         struct regmap_config config;
  25
  26         config = aic32x4_regmap_config;
  27         config.reg_bits = 7;
  28         config.pad_bits = 1;
  29         config.val_bits = 8;
  30         config.read_flag_mask = 0x01;
  31
  32         regmap = devm_regmap_init_spi(spi, &config);
  33
  34         if (spi->dev.of_node) {
  35                 const struct of_device_id *oid;
  36
  37                 oid = of_match_node(aic32x4_of_id, spi->dev.of_node);
  38                 dev_set_drvdata(&spi->dev, (void *)oid->data);
  39         } else {
  40                 const struct spi_device_id *id_entry;
  41
  42                 id_entry = spi_get_device_id(spi);
  43                 dev_set_drvdata(&spi->dev, (void *)id_entry->driver_data);
  44         }
  45
  46         return aic32x4_probe(&spi->dev, regmap);
  47 }
  48
  49 static void aic32x4_spi_remove(struct spi_device *spi)
  50 {
  51         aic32x4_remove(&spi->dev);
  52 }
  53
  54 static const struct spi_device_id aic32x4_spi_id[] = {
  55         { "tlv320aic32x4", (kernel_ulong_t)AIC32X4_TYPE_AIC32X4 },
  56         { "tlv320aic32x6", (kernel_ulong_t)AIC32X4_TYPE_AIC32X6 },
  57         { /* sentinel */ }
  58 };
  59 MODULE_DEVICE_TABLE(spi, aic32x4_spi_id);
  60
  61 static const struct of_device_id aic32x4_of_id[] = {
  62         { .compatible = "ti,tlv320aic32x4", .data = (void *)AIC32X4_TYPE_AIC32X4 },
  63         { .compatible = "ti,tlv320aic32x6", .data = (void *)AIC32X4_TYPE_AIC32X6 },
  64         { /* senitel */ }
  65 };
  66 MODULE_DEVICE_TABLE(of, aic32x4_of_id);
  67
  68 static struct spi_driver aic32x4_spi_driver = {
  69         .driver = {
  70                 .name = "tlv320aic32x4",
  71                 .owner = THIS_MODULE,
  72                 .of_match_table = aic32x4_of_id,
  73         },
  74         .probe =    aic32x4_spi_probe,
  75         .remove =   aic32x4_spi_remove,
  76         .id_table = aic32x4_spi_id,
  77 };
  78
  79 module_spi_driver(aic32x4_spi_driver);
  80
  81 MODULE_DESCRIPTION("ASoC TLV320AIC32x4 codec driver SPI");
  82 MODULE_AUTHOR("Annaliese McDermond <nh6z@nh6z.net>");
  83 MODULE_LICENSE("GPL");