mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
- Increase DT coverage - arizona, mc13xxx, stmpe-i2c, syscon, sun6i-prcm - Regmap use of and/or clean-up - tps65090, twl6040 - Basic renaming - max14577 - Use new cpufreq helpers - db8500-prcmu - Increase regulator support - stmpe, arizona, wm5102 - Reduce legacy GPIO overhead - stmpe - Provide necessary remove path - bcm590xx - Expand sysfs presence - kempld - Move driver specific code out to drivers - rtc-s5m, arizona - Clk handling - twl6040 - Use managed (devm_*) resources - ipaq-micro - Clean-up/remove unused/duplicated code - tps65218, sec, pm8921, abx500-core db8500-prcmu, menelaus - Build/boot/sematic bug fixes - rtsx_usb, stmpe, bcm590xx, abx500, mc13xxx rdc321x-southbridge, mfd-core, sec, max14577 syscon, cros_ec_spi - Constify stuff - sm501, tps65910, tps6507x, tps6586x, max77686, max8997, kempld, max77693, max8907, rtsx_usb db8500-prcmu, max8998, wm8400, sec, lp3943, max14577, as3711, omap-usb-host, ipaq-micro Support for new devices: - Add support for max77836 into max14577 - Add support for tps658640 into tps6586x - Add support for cros-ec-i2c-tunnel into cros_ec - Add new driver for rtsx_usb_sdmmc and rtsx_usb_ms - Add new driver for axp20x - Add new driver for sun6i-prcm - Add new driver for ipaq-micro -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJTkEAyAAoJEFGvii+H/HdhYdMP/j0MCmbORM9mr84Uuhi0PfBZ yE1zlhLQHtqQEcp4Ih6vWxIbgdhyHy3CqIiCKkhSTH0TWfreBX7DmlSc1QAKazpy sXeD/pB5TSIIfAHVh4NXF51WMzZ8OvQrmJQwdjUY1Sal2tlDCUdc84qtnn+3/J9N JIKpf4E1IeWojE8F3koKBcyE6ZzkAthIzWNDU9/y+sIZZEqPVRu9Y3mpdhPo6P3I 9TboZ/s2cAwad56iArFMOCvtg1xpn0WyS0HgAxpSa9X5qLRjYPX5GnBBz8zKJYm3 xHCiD6SgN29xX9W+MkcvtgEghhMfOkPgwF69u2/eagbtNEOm50cyLrvAe+SKjRvE pODs5yvHJap29cbVafHSdzV+zLZ51J/Oi/TFsG8/VBbd4DyW7oSM4juT20TFSiNt Edwzd4gicg/NxA7TupFCRQLgwAa3fnpPeCtsIims7LU7SclPuwNgS31isOGAkOvd mMaBa1clZb50Dy2iL8m1ugyqdOZXs9S24j3u+B0TTJyabMbNhDTGUwBG4/PrlJHq fIysx6CdNUGLikG2PybFvhCf3+FkEoPPtkloM1sblkhPHVunVlhXPRYAE90W2jUA dDQ2Aco/idWSGRZ5t7kA8OBN3+PwiIpxTt/D4eDmS7Qe/v3KXvhUYuKl2mD5+IfC StFiP5cd3zyJvWTeexuW =GYTU -----END PGP SIGNATURE----- Merge tag 'mfd-for-linus-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next Pull MFD updates from Lee Jones: "Changes to existing drivers: - increase DT coverage: arizona, mc13xxx, stmpe-i2c, syscon, sun6i-prcm - regmap use of and/or clean-up: tps65090, twl6040 - basic renaming: max14577 - use new cpufreq helpers: db8500-prcmu - increase regulator support: stmpe, arizona, wm5102 - reduce legacy GPIO overhead: stmpe - provide necessary remove path: bcm590xx - expand sysfs presence: kempld - move driver specific code out to drivers: rtc-s5m, arizona - clk handling: twl6040 - use managed (devm_*) resources: ipaq-micro - clean-up/remove unused/duplicated code: tps65218, sec, pm8921, abx500-core, db8500-prcmu, menelaus - build/boot/sematic bug fixes: rtsx_usb, stmpe, bcm590xx, abx500, mc13xxx, rdc321x-southbridge, mfd-core, sec, max14577, syscon, cros_ec_spi - constify stuff: sm501, tps65910, tps6507x, tps6586x, max77686, max8997, kempld, max77693, max8907, rtsx_usb, db8500-prcmu, max8998, wm8400, sec, lp3943, max14577, as3711, omap-usb-host, ipaq-micro Support for new devices: - add support for max77836 into max14577 - add support for tps658640 into tps6586x - add support for cros-ec-i2c-tunnel into cros_ec - add new driver for rtsx_usb_sdmmc and rtsx_usb_ms - add new driver for axp20x - add new driver for sun6i-prcm - add new driver for ipaq-micro" * tag 'mfd-for-linus-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (77 commits) mfd: wm5102: Correct default for LDO Control 2 register mfd: menelaus: Use module_i2c_driver mfd: tps65218: Terminate of match table mfd: db8500-prcmu: Remove check for CONFIG_DBX500_PRCMU_DEBUG mfd: ti-keystone-devctrl: Add bindings for device state control mfd: palmas: Format the header file mfd: abx500-core: Remove unused function abx500_dump_all_banks() mfd: arizona: Correct addresses of always-on trigger registers mfd: max14577: Cast to architecture agnostic data type i2c: ChromeOS EC tunnel driver mfd: cros_ec: Sync to the latest cros_ec_commands.h from EC sources mfd: cros_ec: spi: Increase cros_ec_spi deadline from 5ms to 100ms mfd: cros_ec: spi: Make the cros_ec_spi timeout more reliable mfd: cros_ec: spi: Add mutex to cros_ec_spi mfd: cros_ec: spi: Calculate delay between transfers correctly mfd: arizona: Correct error message for addition of main IRQ chip mfd: wm8997: Add registers for high power mode mfd: arizona: Add MICVDD to mapped regulators mfd: ipaq-micro: Make mfd_cell array const mfd: ipaq-micro: Use devm_ioremap_resource() ...
190 lines
4.2 KiB
C
190 lines
4.2 KiB
C
/*
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* System Control Driver
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*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Copyright (C) 2012 Linaro Ltd.
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*
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* Author: Dong Aisheng <dong.aisheng@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/platform_data/syscon.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/mfd/syscon.h>
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static struct platform_driver syscon_driver;
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struct syscon {
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struct regmap *regmap;
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};
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static int syscon_match_node(struct device *dev, void *data)
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{
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struct device_node *dn = data;
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return (dev->of_node == dn) ? 1 : 0;
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}
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struct regmap *syscon_node_to_regmap(struct device_node *np)
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{
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struct syscon *syscon;
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struct device *dev;
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dev = driver_find_device(&syscon_driver.driver, NULL, np,
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syscon_match_node);
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if (!dev)
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return ERR_PTR(-EPROBE_DEFER);
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syscon = dev_get_drvdata(dev);
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return syscon->regmap;
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}
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EXPORT_SYMBOL_GPL(syscon_node_to_regmap);
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struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
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{
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struct device_node *syscon_np;
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struct regmap *regmap;
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syscon_np = of_find_compatible_node(NULL, NULL, s);
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if (!syscon_np)
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return ERR_PTR(-ENODEV);
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regmap = syscon_node_to_regmap(syscon_np);
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of_node_put(syscon_np);
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return regmap;
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}
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EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_compatible);
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static int syscon_match_pdevname(struct device *dev, void *data)
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{
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return !strcmp(dev_name(dev), (const char *)data);
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}
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struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
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{
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struct device *dev;
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struct syscon *syscon;
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dev = driver_find_device(&syscon_driver.driver, NULL, (void *)s,
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syscon_match_pdevname);
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if (!dev)
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return ERR_PTR(-EPROBE_DEFER);
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syscon = dev_get_drvdata(dev);
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return syscon->regmap;
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}
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EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_pdevname);
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struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np,
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const char *property)
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{
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struct device_node *syscon_np;
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struct regmap *regmap;
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if (property)
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syscon_np = of_parse_phandle(np, property, 0);
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else
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syscon_np = np;
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if (!syscon_np)
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return ERR_PTR(-ENODEV);
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regmap = syscon_node_to_regmap(syscon_np);
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of_node_put(syscon_np);
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return regmap;
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}
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EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_phandle);
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static const struct of_device_id of_syscon_match[] = {
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{ .compatible = "syscon", },
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{ },
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};
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static struct regmap_config syscon_regmap_config = {
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.reg_bits = 32,
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.val_bits = 32,
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.reg_stride = 4,
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};
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static int syscon_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct syscon_platform_data *pdata = dev_get_platdata(dev);
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struct syscon *syscon;
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struct resource *res;
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void __iomem *base;
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syscon = devm_kzalloc(dev, sizeof(*syscon), GFP_KERNEL);
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if (!syscon)
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return -ENOMEM;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -ENOENT;
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base = devm_ioremap(dev, res->start, resource_size(res));
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if (!base)
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return -ENOMEM;
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syscon_regmap_config.max_register = res->end - res->start - 3;
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if (pdata)
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syscon_regmap_config.name = pdata->label;
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syscon->regmap = devm_regmap_init_mmio(dev, base,
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&syscon_regmap_config);
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if (IS_ERR(syscon->regmap)) {
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dev_err(dev, "regmap init failed\n");
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return PTR_ERR(syscon->regmap);
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}
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platform_set_drvdata(pdev, syscon);
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dev_dbg(dev, "regmap %pR registered\n", res);
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return 0;
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}
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static const struct platform_device_id syscon_ids[] = {
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{ "syscon", },
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{ }
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};
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static struct platform_driver syscon_driver = {
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.driver = {
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.name = "syscon",
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.owner = THIS_MODULE,
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.of_match_table = of_syscon_match,
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},
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.probe = syscon_probe,
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.id_table = syscon_ids,
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};
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static int __init syscon_init(void)
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{
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return platform_driver_register(&syscon_driver);
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}
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postcore_initcall(syscon_init);
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static void __exit syscon_exit(void)
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{
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platform_driver_unregister(&syscon_driver);
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}
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module_exit(syscon_exit);
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MODULE_AUTHOR("Dong Aisheng <dong.aisheng@linaro.org>");
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MODULE_DESCRIPTION("System Control driver");
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MODULE_LICENSE("GPL v2");
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