linux/sound/soc/codecs/cs4271-spi.c
Alexander Sverdlin 2e9688c81c
ASoC: cs4271: flat regcache, trivial simplifications
- Switch to REGCACHE_FLAT, the whole overhead of RBTREE is not worth it
  with non sparse register set in the address range 1..7.
- Move register width to central location

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/r/20230410223902.2321834-3-alexander.sverdlin@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-04-11 12:37:16 +01:00

38 lines
877 B
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* CS4271 SPI audio driver
*
* Copyright (c) 2010 Alexander Sverdlin <subaparts@yandex.ru>
*/
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include "cs4271.h"
static int cs4271_spi_probe(struct spi_device *spi)
{
struct regmap_config config;
config = cs4271_regmap_config;
config.reg_bits = 16;
config.read_flag_mask = 0x21;
config.write_flag_mask = 0x20;
return cs4271_probe(&spi->dev, devm_regmap_init_spi(spi, &config));
}
static struct spi_driver cs4271_spi_driver = {
.driver = {
.name = "cs4271",
.of_match_table = of_match_ptr(cs4271_dt_ids),
},
.probe = cs4271_spi_probe,
};
module_spi_driver(cs4271_spi_driver);
MODULE_DESCRIPTION("ASoC CS4271 SPI Driver");
MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>");
MODULE_LICENSE("GPL");