da4d0f2425
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config MFD_SMSC drivers/mfd/Kconfig: bool "SMSC ECE1099 series chips" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init was not in use by this code, the init ordering remains unchanged with this commit. We replace module.h with init.h and delete an unused moduleparam.h include. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Sourav Poddar <sourav.poddar@ti.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
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* TI SMSC MFD Driver
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
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*
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* Author: Sourav Poddar <sourav.poddar@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; GPL v2.
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*
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/workqueue.h>
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#include <linux/irq.h>
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#include <linux/regmap.h>
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#include <linux/err.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/smsc.h>
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#include <linux/of_platform.h>
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static const struct regmap_config smsc_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = SMSC_VEN_ID_H,
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.cache_type = REGCACHE_RBTREE,
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};
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static int smsc_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct smsc *smsc;
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int devid, rev, venid_l, venid_h;
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int ret;
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smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
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GFP_KERNEL);
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if (!smsc) {
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dev_err(&i2c->dev, "smsc mfd driver memory allocation failed\n");
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return -ENOMEM;
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}
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smsc->regmap = devm_regmap_init_i2c(i2c, &smsc_regmap_config);
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if (IS_ERR(smsc->regmap))
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return PTR_ERR(smsc->regmap);
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i2c_set_clientdata(i2c, smsc);
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smsc->dev = &i2c->dev;
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#ifdef CONFIG_OF
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of_property_read_u32(i2c->dev.of_node, "clock", &smsc->clk);
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#endif
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regmap_read(smsc->regmap, SMSC_DEV_ID, &devid);
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regmap_read(smsc->regmap, SMSC_DEV_REV, &rev);
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regmap_read(smsc->regmap, SMSC_VEN_ID_L, &venid_l);
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regmap_read(smsc->regmap, SMSC_VEN_ID_H, &venid_h);
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dev_info(&i2c->dev, "SMSCxxx devid: %02x rev: %02x venid: %02x\n",
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devid, rev, (venid_h << 8) | venid_l);
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ret = regmap_write(smsc->regmap, SMSC_CLK_CTRL, smsc->clk);
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if (ret)
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return ret;
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#ifdef CONFIG_OF
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if (i2c->dev.of_node)
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ret = of_platform_populate(i2c->dev.of_node,
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NULL, NULL, &i2c->dev);
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#endif
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return ret;
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}
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static const struct i2c_device_id smsc_i2c_id[] = {
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{ "smscece1099", 0},
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{},
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};
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static struct i2c_driver smsc_i2c_driver = {
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.driver = {
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.name = "smsc",
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},
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.probe = smsc_i2c_probe,
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.id_table = smsc_i2c_id,
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};
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builtin_i2c_driver(smsc_i2c_driver);
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