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![Linus Torvalds](/assets/img/avatar_default.png)
from Dialog Semiconductor. Besides that driver we also have: - Device tree support for the s2mps11 driver - More devm_* conversion for the pm8921, max89xx, menelaus, tps65010, wl1273 and pcf50633-adc drivers. - A conversion to threaded IRQ and IRQ domain for the twl6030 driver. - A fairly big update for the rtsx driver: Better power saving support, better vendor settings handling, and a few fixes. - Support for a couple more boards (COMe-bHL6 and COMe-cTH6) for the Kontron driver. - A conversion to the dev_get_platdata() API for all MFD drivers. - A removal of non-DT (legacy) support for the twl6040 driver. - A few fixes and additions (Mic detect level) to the wm5110 register tables. - Regmap support for the davinci_voicecodec driver. - The usual bunch of minor cleanups and janitorial fixes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJSKFnjAAoJEIqAPN1PVmxKU9AP/RAmSYux6c+cd7P7roXL+/lA qNKy8Op31J51N/n918o7zwbskmRIJJsbd+I6ClBlYdCUB+B8/Oj41uD4F+q35b/H F5Xm2XRPQAGHx37m5adJMrK/OR3zCTwhPjleJYOJWIFjDP/nDNJIPwTYb13Rqurh V39icmRtnNR0uDOmv3eELyV4FnWQTpA858dxuhSi+5jbbHFhCcYShEmE9109eexl RNuyF8d0KPGvnKhK+H1/k4ZYG2XAFFOZfZz9MB+l651nidqDvwJph0Zdj3w1r112 8OR5i7B3vw268nmyjOOUtYqL2vOaUW4lavmLTQiSdQWd1BHv9hEmD0RRR5bSrLeH 6DwCTh0+xWH08ogbMwi4dwZyRhjxMPMpkxeNz51TpRnXKDSZmBgrjovKNJpP8pW6 m7RsgUC9AiEQf/Ac0PBMrU8ABKeJnt3K3ZZp4YN7/H6rAMOhXjLqFD8JLoFvx08z itKKSzVaIA3pzxpnkWWiTsr+bChaSOrHHy1biWa4ve5pvrFc9ivPz1DhL3PTmXpp haeeylFG01r5NJIHeJewRsmUJk67aEyeAnnoLwqCRycWjdDmcCBC5bgDBkRRonoS 93tgKVzL9q/NwvT5Uatw3uYqTN0jOuH0t39gAzu9uwnWvivcZK5EBYh789YQL+on zih4qUICM08yWRDNNDgF =a7dU -----END PGP SIGNATURE----- Merge tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next Pull MFD (multi-function device) updates from Samuel Ortiz: "For the 3.12 merge window we have one new driver for the DA9063 PMIC from Dialog Semiconductor. Besides that driver we also have: - Device tree support for the s2mps11 driver - More devm_* conversion for the pm8921, max89xx, menelaus, tps65010, wl1273 and pcf50633-adc drivers. - A conversion to threaded IRQ and IRQ domain for the twl6030 driver. - A fairly big update for the rtsx driver: Better power saving support, better vendor settings handling, and a few fixes. - Support for a couple more boards (COMe-bHL6 and COMe-cTH6) for the Kontron driver. - A conversion to the dev_get_platdata() API for all MFD drivers. - A removal of non-DT (legacy) support for the twl6040 driver. - A few fixes and additions (Mic detect level) to the wm5110 register tables. - Regmap support for the davinci_voicecodec driver. - The usual bunch of minor cleanups and janitorial fixes" * tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (81 commits) mfd: ucb1x00-core: Rewrite ucb1x00_add_dev() mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for event name mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for sysfs mfd: timberdale: Use module_pci_driver mfd: timberdale: Remove redundant break mfd: timberdale: Staticize local variables mfd: ab8500-debugfs: Staticize local variables mfd: db8500-prcmu: Staticize clk_mgt mfd: db8500-prcmu: Use ANSI function declaration mfd: omap-usb-host: Staticize usbhs_driver_name mfd: 88pm805: Fix potential NULL pdata dereference mfd: 88pm800: Fix potential NULL pdata dereference mfd: twl6040: Use regmap for register cache mfd: davinci_voicecodec: Provide a regmap for register I/O mfd: davinci_voicecodec: Remove unused read and write functions mmc: memstick: rtsx: Modify copyright comments mmc: rtsx: Clear SD_CLK toggle enable bit if switching voltage fail mfd: mmc: rtsx: Change default tx phase mfd: pcf50633-adc: Use devm_*() functions mfd: rtsx: Copyright modifications ...
189 lines
4.2 KiB
C
189 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_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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struct platform_device *pdev = to_platform_device(dev);
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const struct platform_device_id *id = platform_get_device_id(pdev);
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if (id)
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if (!strcmp(id->name, (const char *)data))
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return 1;
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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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syscon_np = of_parse_phandle(np, property, 0);
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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 *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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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_info(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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