diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/mfd/wm831x-spi.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/mfd/wm831x-spi.c')
-rw-r--r-- | kernel/drivers/mfd/wm831x-spi.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/kernel/drivers/mfd/wm831x-spi.c b/kernel/drivers/mfd/wm831x-spi.c new file mode 100644 index 000000000..b8a5e3b34 --- /dev/null +++ b/kernel/drivers/mfd/wm831x-spi.c @@ -0,0 +1,127 @@ +/* + * wm831x-spi.c -- SPI access for Wolfson WM831x PMICs + * + * Copyright 2009,2010 Wolfson Microelectronics PLC. + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pm.h> +#include <linux/spi/spi.h> +#include <linux/regmap.h> +#include <linux/err.h> + +#include <linux/mfd/wm831x/core.h> + +static int wm831x_spi_probe(struct spi_device *spi) +{ + const struct spi_device_id *id = spi_get_device_id(spi); + struct wm831x *wm831x; + enum wm831x_parent type; + int ret; + + type = (enum wm831x_parent)id->driver_data; + + wm831x = devm_kzalloc(&spi->dev, sizeof(struct wm831x), GFP_KERNEL); + if (wm831x == NULL) + return -ENOMEM; + + spi->mode = SPI_MODE_0; + + spi_set_drvdata(spi, wm831x); + wm831x->dev = &spi->dev; + + wm831x->regmap = devm_regmap_init_spi(spi, &wm831x_regmap_config); + if (IS_ERR(wm831x->regmap)) { + ret = PTR_ERR(wm831x->regmap); + dev_err(wm831x->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + return wm831x_device_init(wm831x, type, spi->irq); +} + +static int wm831x_spi_remove(struct spi_device *spi) +{ + struct wm831x *wm831x = spi_get_drvdata(spi); + + wm831x_device_exit(wm831x); + + return 0; +} + +static int wm831x_spi_suspend(struct device *dev) +{ + struct wm831x *wm831x = dev_get_drvdata(dev); + + return wm831x_device_suspend(wm831x); +} + +static int wm831x_spi_poweroff(struct device *dev) +{ + struct wm831x *wm831x = dev_get_drvdata(dev); + + wm831x_device_shutdown(wm831x); + + return 0; +} + +static const struct dev_pm_ops wm831x_spi_pm = { + .freeze = wm831x_spi_suspend, + .suspend = wm831x_spi_suspend, + .poweroff = wm831x_spi_poweroff, +}; + +static const struct spi_device_id wm831x_spi_ids[] = { + { "wm8310", WM8310 }, + { "wm8311", WM8311 }, + { "wm8312", WM8312 }, + { "wm8320", WM8320 }, + { "wm8321", WM8321 }, + { "wm8325", WM8325 }, + { "wm8326", WM8326 }, + { }, +}; +MODULE_DEVICE_TABLE(spi, wm831x_spi_ids); + +static struct spi_driver wm831x_spi_driver = { + .driver = { + .name = "wm831x", + .owner = THIS_MODULE, + .pm = &wm831x_spi_pm, + }, + .id_table = wm831x_spi_ids, + .probe = wm831x_spi_probe, + .remove = wm831x_spi_remove, +}; + +static int __init wm831x_spi_init(void) +{ + int ret; + + ret = spi_register_driver(&wm831x_spi_driver); + if (ret != 0) + pr_err("Failed to register WM831x SPI driver: %d\n", ret); + + return 0; +} +subsys_initcall(wm831x_spi_init); + +static void __exit wm831x_spi_exit(void) +{ + spi_unregister_driver(&wm831x_spi_driver); +} +module_exit(wm831x_spi_exit); + +MODULE_DESCRIPTION("SPI support for WM831x/2x AudioPlus PMICs"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mark Brown"); |