diff options
Diffstat (limited to 'drivers/mfd/mc13xxx-i2c.c')
-rw-r--r-- | drivers/mfd/mc13xxx-i2c.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/mfd/mc13xxx-i2c.c b/drivers/mfd/mc13xxx-i2c.c new file mode 100644 index 0000000000..6bc0e755ba --- /dev/null +++ b/drivers/mfd/mc13xxx-i2c.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2009-2010 Creative Product Design + * Marc Reilly marc@cpdesign.com.au + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/mfd/core.h> +#include <linux/mfd/mc13xxx.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/i2c.h> +#include <linux/err.h> + +#include "mc13xxx.h" + +static const struct i2c_device_id mc13xxx_i2c_device_id[] = { + { + .name = "mc13892", + .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892, + }, { + .name = "mc34708", + .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); + +static const struct of_device_id mc13xxx_dt_ids[] = { + { + .compatible = "fsl,mc13892", + .data = &mc13xxx_variant_mc13892, + }, { + .compatible = "fsl,mc34708", + .data = &mc13xxx_variant_mc34708, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); + +static const struct regmap_config mc13xxx_regmap_i2c_config = { + .reg_bits = 8, + .val_bits = 24, + + .max_register = MC13XXX_NUMREGS, + + .cache_type = REGCACHE_NONE, +}; + +static int mc13xxx_i2c_probe(struct i2c_client *client) +{ + struct mc13xxx *mc13xxx; + int ret; + + mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); + if (!mc13xxx) + return -ENOMEM; + + dev_set_drvdata(&client->dev, mc13xxx); + + mc13xxx->irq = client->irq; + + mc13xxx->regmap = devm_regmap_init_i2c(client, + &mc13xxx_regmap_i2c_config); + if (IS_ERR(mc13xxx->regmap)) { + ret = PTR_ERR(mc13xxx->regmap); + dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret); + return ret; + } + + mc13xxx->variant = i2c_get_match_data(client); + + return mc13xxx_common_init(&client->dev); +} + +static void mc13xxx_i2c_remove(struct i2c_client *client) +{ + mc13xxx_common_exit(&client->dev); +} + +static struct i2c_driver mc13xxx_i2c_driver = { + .id_table = mc13xxx_i2c_device_id, + .driver = { + .name = "mc13xxx", + .of_match_table = mc13xxx_dt_ids, + }, + .probe = mc13xxx_i2c_probe, + .remove = mc13xxx_i2c_remove, +}; + +static int __init mc13xxx_i2c_init(void) +{ + return i2c_add_driver(&mc13xxx_i2c_driver); +} +subsys_initcall(mc13xxx_i2c_init); + +static void __exit mc13xxx_i2c_exit(void) +{ + i2c_del_driver(&mc13xxx_i2c_driver); +} +module_exit(mc13xxx_i2c_exit); + +MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); +MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); +MODULE_LICENSE("GPL v2"); |