Merge tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

Pull MFS update from Samuel Ortiz:
 "This is the MFD patch set for the 3.8 merge window.

  We have several new drivers, most of the time coming with their sub
  devices drivers:

   - Austria Microsystem's AS3711
   - Nano River's viperboard
   - TI's TPS80031, AM335x TS/ADC,
   - Realtek's MMC/memstick card reader
   - Nokia's retu

  We also got some notable cleanups and improvements:

   - tps6586x got converted to IRQ domains.
   - tps65910 and tps65090 moved to the regmap IRQ API.
   - STMPE is now Device Tree aware.
   - A general twl6040 and twl-core cleanup, with moves to the regmap
     I/O and IRQ APIs and a conversion to the recently added PWM
     framework.
   - sta2x11 gained regmap support.

  Then the rest is mostly tiny cleanups and fixes, among which we have
  Mark's wm5xxx and wm8xxx patchset."

Far amount of annoying but largely trivial conflicts.  Many due to
__devinit/exit removal, others due to one or two of the new drivers also
having come in through another tree.

* tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (119 commits)
  mfd: tps6507x: Convert to devm_kzalloc
  mfd: stmpe: Update DT support for stmpe driver
  mfd: wm5102: Add readback of DSP status 3 register
  mfd: arizona: Log if we fail to create the primary IRQ domain
  mfd: tps80031: MFD_TPS80031 needs to select REGMAP_IRQ
  mfd: tps80031: Add terminating entry for tps80031_id_table
  mfd: sta2x11: Fix potential NULL pointer dereference in __sta2x11_mfd_mask()
  mfd: wm5102: Add tuning for revision B
  mfd: arizona: Defer patch initialistation until after first device boot
  mfd: tps65910: Fix wrong ack_base register
  mfd: tps65910: Remove unused data
  mfd: stmpe: Get rid of irq_invert_polarity
  mfd: ab8500-core: Fix invalid free of devm_ allocated data
  mfd: wm5102: Mark DSP memory regions as volatile
  mfd: wm5102: Correct default for LDO1_CONTROL_2
  mfd: arizona: Register haptics devices
  mfd: wm8994: Make current device behaviour the default
  mfd: tps65090: MFD_TPS65090 needs to select REGMAP_IRQ
  mfd: Fix stmpe.c build when OF is not enabled
  mfd: jz4740-adc: Use devm_kzalloc
  ...

1 files changed, 181 insertions, 0 deletions

diff --git a/drivers/iio/adc/viperboard_adc.c b/drivers/iio/adc/viperboard_adc.c
new file mode 100644
index 000000000000..10136a8b20d4
--- /dev/null
+++ b/drivers/iio/adc/viperboard_adc.c
@@ -0,0 +1,181 @@
+/*
+ *  Nano River Technologies viperboard IIO ADC driver
+ *
+ *  (C) 2012 by Lemonage GmbH
+ *  Author: Lars Poeschel <poeschel@lemonage.de>
+ *  All rights reserved.
+ *
+ *  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/errno.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+
+#include <linux/usb.h>
+#include <linux/iio/iio.h>
+
+#include <linux/mfd/viperboard.h>
+
+#define VPRBRD_ADC_CMD_GET              0x00
+
+struct vprbrd_adc_msg {
+        u8 cmd;
+        u8 chan;
+        u8 val;
+} __packed;
+
+struct vprbrd_adc {
+        struct vprbrd *vb;
+};
+
+#define VPRBRD_ADC_CHANNEL(_index) {                    \
+        .type = IIO_VOLTAGE,                            \
+        .indexed = 1,                                   \
+        .channel = _index,                              \
+        .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,    \
+        .scan_index = _index,                           \
+        .scan_type = {                                  \
+                .sign = 'u',                            \
+                .realbits = 8,                          \
+                .storagebits = 8,                       \
+        },                                              \
+}
+
+static struct iio_chan_spec const vprbrd_adc_iio_channels[] = {
+        VPRBRD_ADC_CHANNEL(0),
+        VPRBRD_ADC_CHANNEL(1),
+        VPRBRD_ADC_CHANNEL(2),
+        VPRBRD_ADC_CHANNEL(3),
+};
+
+static int vprbrd_iio_read_raw(struct iio_dev *iio_dev,
+                                struct iio_chan_spec const *chan,
+                                int *val,
+                                int *val2,
+                                long info)
+{
+        int ret, error = 0;
+        struct vprbrd_adc *adc = iio_priv(iio_dev);
+        struct vprbrd *vb = adc->vb;
+        struct vprbrd_adc_msg *admsg = (struct vprbrd_adc_msg *)vb->buf;
+
+        switch (info) {
+        case IIO_CHAN_INFO_RAW:
+                mutex_lock(&vb->lock);
+
+                admsg->cmd = VPRBRD_ADC_CMD_GET;
+                admsg->chan = chan->scan_index;
+                admsg->val = 0x00;
+
+                ret = usb_control_msg(vb->usb_dev,
+                        usb_sndctrlpipe(vb->usb_dev, 0), VPRBRD_USB_REQUEST_ADC,
+                        VPRBRD_USB_TYPE_OUT, 0x0000, 0x0000, admsg,
+                        sizeof(struct vprbrd_adc_msg), VPRBRD_USB_TIMEOUT_MS);
+                if (ret != sizeof(struct vprbrd_adc_msg)) {
+                        dev_err(&iio_dev->dev, "usb send error on adc read\n");
+                        error = -EREMOTEIO;
+                }
+
+                ret = usb_control_msg(vb->usb_dev,
+                        usb_rcvctrlpipe(vb->usb_dev, 0), VPRBRD_USB_REQUEST_ADC,
+                        VPRBRD_USB_TYPE_IN, 0x0000, 0x0000, admsg,
+                        sizeof(struct vprbrd_adc_msg), VPRBRD_USB_TIMEOUT_MS);
+
+                *val = admsg->val;
+
+                mutex_unlock(&vb->lock);
+
+                if (ret != sizeof(struct vprbrd_adc_msg)) {
+                        dev_err(&iio_dev->dev, "usb recv error on adc read\n");
+                        error = -EREMOTEIO;
+                }
+
+                if (error)
+                        goto error;
+
+                return IIO_VAL_INT;
+        default:
+                error = -EINVAL;
+                break;
+        }
+error:
+        return error;
+}
+
+static const struct iio_info vprbrd_adc_iio_info = {
+        .read_raw = &vprbrd_iio_read_raw,
+        .driver_module = THIS_MODULE,
+};
+
+static int __devinit vprbrd_adc_probe(struct platform_device *pdev)
+{
+        struct vprbrd *vb = dev_get_drvdata(pdev->dev.parent);
+        struct vprbrd_adc *adc;
+        struct iio_dev *indio_dev;
+        int ret;
+
+        /* registering iio */
+        indio_dev = iio_device_alloc(sizeof(*adc));
+        if (!indio_dev) {
+                dev_err(&pdev->dev, "failed allocating iio device\n");
+                return -ENOMEM;
+        }
+
+        adc = iio_priv(indio_dev);
+        adc->vb = vb;
+        indio_dev->name = "viperboard adc";
+        indio_dev->dev.parent = &pdev->dev;
+        indio_dev->info = &vprbrd_adc_iio_info;
+        indio_dev->modes = INDIO_DIRECT_MODE;
+        indio_dev->channels = vprbrd_adc_iio_channels;
+        indio_dev->num_channels = ARRAY_SIZE(vprbrd_adc_iio_channels);
+
+        ret = iio_device_register(indio_dev);
+        if (ret) {
+                dev_err(&pdev->dev, "could not register iio (adc)");
+                goto error;
+        }
+
+        platform_set_drvdata(pdev, indio_dev);
+
+        return 0;
+
+error:
+        iio_device_free(indio_dev);
+        return ret;
+}
+
+static int __devexit vprbrd_adc_remove(struct platform_device *pdev)
+{
+        struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+
+        iio_device_unregister(indio_dev);
+        iio_device_free(indio_dev);
+
+        return 0;
+}
+
+static struct platform_driver vprbrd_adc_driver = {
+        .driver = {
+                .name   = "viperboard-adc",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = vprbrd_adc_probe,
+        .remove         = __devexit_p(vprbrd_adc_remove),
+};
+
+module_platform_driver(vprbrd_adc_driver);
+
+MODULE_AUTHOR("Lars Poeschel <poeschel@lemonage.de>");
+MODULE_DESCRIPTION("IIO ADC driver for Nano River Techs Viperboard");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:viperboard-adc");