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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/mfd/smsc-ece1099.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (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/smsc-ece1099.c')
-rw-r--r--kernel/drivers/mfd/smsc-ece1099.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/kernel/drivers/mfd/smsc-ece1099.c b/kernel/drivers/mfd/smsc-ece1099.c
new file mode 100644
index 000000000..03246880d
--- /dev/null
+++ b/kernel/drivers/mfd/smsc-ece1099.c
@@ -0,0 +1,112 @@
+/*
+ * TI SMSC MFD Driver
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Author: Sourav Poddar <sourav.poddar@ti.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; GPL v2.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/workqueue.h>
+#include <linux/irq.h>
+#include <linux/regmap.h>
+#include <linux/err.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/smsc.h>
+#include <linux/of_platform.h>
+
+static const struct regmap_config smsc_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = SMSC_VEN_ID_H,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int smsc_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct smsc *smsc;
+ int devid, rev, venid_l, venid_h;
+ int ret = 0;
+
+ smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
+ GFP_KERNEL);
+ if (!smsc) {
+ dev_err(&i2c->dev, "smsc mfd driver memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ smsc->regmap = devm_regmap_init_i2c(i2c, &smsc_regmap_config);
+ if (IS_ERR(smsc->regmap)) {
+ ret = PTR_ERR(smsc->regmap);
+ goto err;
+ }
+
+ i2c_set_clientdata(i2c, smsc);
+ smsc->dev = &i2c->dev;
+
+#ifdef CONFIG_OF
+ of_property_read_u32(i2c->dev.of_node, "clock", &smsc->clk);
+#endif
+
+ regmap_read(smsc->regmap, SMSC_DEV_ID, &devid);
+ regmap_read(smsc->regmap, SMSC_DEV_REV, &rev);
+ regmap_read(smsc->regmap, SMSC_VEN_ID_L, &venid_l);
+ regmap_read(smsc->regmap, SMSC_VEN_ID_H, &venid_h);
+
+ dev_info(&i2c->dev, "SMSCxxx devid: %02x rev: %02x venid: %02x\n",
+ devid, rev, (venid_h << 8) | venid_l);
+
+ ret = regmap_write(smsc->regmap, SMSC_CLK_CTRL, smsc->clk);
+ if (ret)
+ goto err;
+
+#ifdef CONFIG_OF
+ if (i2c->dev.of_node)
+ ret = of_platform_populate(i2c->dev.of_node,
+ NULL, NULL, &i2c->dev);
+#endif
+
+err:
+ return ret;
+}
+
+static int smsc_i2c_remove(struct i2c_client *i2c)
+{
+ struct smsc *smsc = i2c_get_clientdata(i2c);
+
+ mfd_remove_devices(smsc->dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id smsc_i2c_id[] = {
+ { "smscece1099", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, smsc_i2c_id);
+
+static struct i2c_driver smsc_i2c_driver = {
+ .driver = {
+ .name = "smsc",
+ .owner = THIS_MODULE,
+ },
+ .probe = smsc_i2c_probe,
+ .remove = smsc_i2c_remove,
+ .id_table = smsc_i2c_id,
+};
+
+module_i2c_driver(smsc_i2c_driver);
+
+MODULE_AUTHOR("Sourav Poddar <sourav.poddar@ti.com>");
+MODULE_DESCRIPTION("SMSC chip multi-function driver");
+MODULE_LICENSE("GPL v2");