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>

1 files changed, 483 insertions, 0 deletions

diff --git a/kernel/drivers/media/usb/gspca/konica.c b/kernel/drivers/media/usb/gspca/konica.c
new file mode 100644
index 000000000..39c96bb4c
--- /dev/null
+++ b/kernel/drivers/media/usb/gspca/konica.c
@@ -0,0 +1,483 @@
+/*
+ * Driver for USB webcams based on Konica chipset. This
+ * chipset is used in Intel YC76 camera.
+ *
+ * Copyright (C) 2010 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on the usbvideo v4l1 konicawc driver which is:
+ *
+ * Copyright (C) 2002 Simon Evans <spse@secret.org.uk>
+ *
+ * The code for making gspca work with a webcam with 2 isoc endpoints was
+ * taken from the benq gspca subdriver which is:
+ *
+ * Copyright (C) 2009 Jean-Francois Moine (http://moinejf.free.fr)
+ *
+ * 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
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define MODULE_NAME "konica"
+
+#include <linux/input.h>
+#include "gspca.h"
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("Konica chipset USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+#define WHITEBAL_REG   0x01
+#define BRIGHTNESS_REG 0x02
+#define SHARPNESS_REG  0x03
+#define CONTRAST_REG   0x04
+#define SATURATION_REG 0x05
+
+/* specific webcam descriptor */
+struct sd {
+	struct gspca_dev gspca_dev;	/* !! must be the first item */
+	struct urb *last_data_urb;
+	u8 snapshot_pressed;
+};
+
+
+/* .priv is what goes to register 8 for this mode, known working values:
+   0x00 -> 176x144, cropped
+   0x01 -> 176x144, cropped
+   0x02 -> 176x144, cropped
+   0x03 -> 176x144, cropped
+   0x04 -> 176x144, binned
+   0x05 -> 320x240
+   0x06 -> 320x240
+   0x07 -> 160x120, cropped
+   0x08 -> 160x120, cropped
+   0x09 -> 160x120, binned (note has 136 lines)
+   0x0a -> 160x120, binned (note has 136 lines)
+   0x0b -> 160x120, cropped
+*/
+static const struct v4l2_pix_format vga_mode[] = {
+	{160, 120, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
+		.bytesperline = 160,
+		.sizeimage = 160 * 136 * 3 / 2 + 960,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0x0a},
+	{176, 144, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
+		.bytesperline = 176,
+		.sizeimage = 176 * 144 * 3 / 2 + 960,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0x04},
+	{320, 240, V4L2_PIX_FMT_KONICA420, V4L2_FIELD_NONE,
+		.bytesperline = 320,
+		.sizeimage = 320 * 240 * 3 / 2 + 960,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0x05},
+};
+
+static void sd_isoc_irq(struct urb *urb);
+
+static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	int ret;
+
+	if (gspca_dev->usb_err < 0)
+		return;
+	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+			0x02,
+			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			value,
+			index,
+			NULL,
+			0,
+			1000);
+	if (ret < 0) {
+		pr_err("reg_w err writing %02x to %02x: %d\n",
+		       value, index, ret);
+		gspca_dev->usb_err = ret;
+	}
+}
+
+static void reg_r(struct gspca_dev *gspca_dev, u16 value, u16 index)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	int ret;
+
+	if (gspca_dev->usb_err < 0)
+		return;
+	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+			0x03,
+			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			value,
+			index,
+			gspca_dev->usb_buf,
+			2,
+			1000);
+	if (ret < 0) {
+		pr_err("reg_r err %d\n", ret);
+		gspca_dev->usb_err = ret;
+	}
+}
+
+static void konica_stream_on(struct gspca_dev *gspca_dev)
+{
+	reg_w(gspca_dev, 1, 0x0b);
+}
+
+static void konica_stream_off(struct gspca_dev *gspca_dev)
+{
+	reg_w(gspca_dev, 0, 0x0b);
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+			const struct usb_device_id *id)
+{
+	gspca_dev->cam.cam_mode = vga_mode;
+	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
+	gspca_dev->cam.no_urb_create = 1;
+
+	return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+	int i;
+
+	/*
+	 * The konica needs a freaking large time to "boot" (approx 6.5 sec.),
+	 * and does not want to be bothered while doing so :|
+	 * Register 0x10 counts from 1 - 3, with 3 being "ready"
+	 */
+	msleep(6000);
+	for (i = 0; i < 20; i++) {
+		reg_r(gspca_dev, 0, 0x10);
+		if (gspca_dev->usb_buf[0] == 3)
+			break;
+		msleep(100);
+	}
+	reg_w(gspca_dev, 0, 0x0d);
+
+	return gspca_dev->usb_err;
+}
+
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct urb *urb;
+	int i, n, packet_size;
+	struct usb_host_interface *alt;
+	struct usb_interface *intf;
+
+	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
+	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
+	if (!alt) {
+		pr_err("Couldn't get altsetting\n");
+		return -EIO;
+	}
+
+	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
+
+	n = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
+	reg_w(gspca_dev, n, 0x08);
+
+	konica_stream_on(gspca_dev);
+
+	if (gspca_dev->usb_err)
+		return gspca_dev->usb_err;
+
+	/* create 4 URBs - 2 on endpoint 0x83 and 2 on 0x082 */
+#if MAX_NURBS < 4
+#error "Not enough URBs in the gspca table"
+#endif
+#define SD_NPKT 32
+	for (n = 0; n < 4; n++) {
+		i = n & 1 ? 0 : 1;
+		packet_size =
+			le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize);
+		urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
+		if (!urb) {
+			pr_err("usb_alloc_urb failed\n");
+			return -ENOMEM;
+		}
+		gspca_dev->urb[n] = urb;
+		urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
+						packet_size * SD_NPKT,
+						GFP_KERNEL,
+						&urb->transfer_dma);
+		if (urb->transfer_buffer == NULL) {
+			pr_err("usb_buffer_alloc failed\n");
+			return -ENOMEM;
+		}
+
+		urb->dev = gspca_dev->dev;
+		urb->context = gspca_dev;
+		urb->transfer_buffer_length = packet_size * SD_NPKT;
+		urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
+					n & 1 ? 0x81 : 0x82);
+		urb->transfer_flags = URB_ISO_ASAP
+					| URB_NO_TRANSFER_DMA_MAP;
+		urb->interval = 1;
+		urb->complete = sd_isoc_irq;
+		urb->number_of_packets = SD_NPKT;
+		for (i = 0; i < SD_NPKT; i++) {
+			urb->iso_frame_desc[i].length = packet_size;
+			urb->iso_frame_desc[i].offset = packet_size * i;
+		}
+	}
+
+	return 0;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	konica_stream_off(gspca_dev);
+#if IS_ENABLED(CONFIG_INPUT)
+	/* Don't keep the button in the pressed state "forever" if it was
+	   pressed when streaming is stopped */
+	if (sd->snapshot_pressed) {
+		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
+		input_sync(gspca_dev->input_dev);
+		sd->snapshot_pressed = 0;
+	}
+#endif
+}
+
+/* reception of an URB */
+static void sd_isoc_irq(struct urb *urb)
+{
+	struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct urb *data_urb, *status_urb;
+	u8 *data;
+	int i, st;
+
+	PDEBUG(D_PACK, "sd isoc irq");
+	if (!gspca_dev->streaming)
+		return;
+
+	if (urb->status != 0) {
+		if (urb->status == -ESHUTDOWN)
+			return;		/* disconnection */
+#ifdef CONFIG_PM
+		if (gspca_dev->frozen)
+			return;
+#endif
+		PERR("urb status: %d", urb->status);
+		st = usb_submit_urb(urb, GFP_ATOMIC);
+		if (st < 0)
+			pr_err("resubmit urb error %d\n", st);
+		return;
+	}
+
+	/* if this is a data URB (ep 0x82), wait */
+	if (urb->transfer_buffer_length > 32) {
+		sd->last_data_urb = urb;
+		return;
+	}
+
+	status_urb = urb;
+	data_urb   = sd->last_data_urb;
+	sd->last_data_urb = NULL;
+
+	if (!data_urb || data_urb->start_frame != status_urb->start_frame) {
+		PERR("lost sync on frames");
+		goto resubmit;
+	}
+
+	if (data_urb->number_of_packets != status_urb->number_of_packets) {
+		PERR("no packets does not match, data: %d, status: %d",
+		     data_urb->number_of_packets,
+		     status_urb->number_of_packets);
+		goto resubmit;
+	}
+
+	for (i = 0; i < status_urb->number_of_packets; i++) {
+		if (data_urb->iso_frame_desc[i].status ||
+		    status_urb->iso_frame_desc[i].status) {
+			PERR("pkt %d data-status %d, status-status %d", i,
+			     data_urb->iso_frame_desc[i].status,
+			     status_urb->iso_frame_desc[i].status);
+			gspca_dev->last_packet_type = DISCARD_PACKET;
+			continue;
+		}
+
+		if (status_urb->iso_frame_desc[i].actual_length != 1) {
+			PERR("bad status packet length %d",
+			     status_urb->iso_frame_desc[i].actual_length);
+			gspca_dev->last_packet_type = DISCARD_PACKET;
+			continue;
+		}
+
+		st = *((u8 *)status_urb->transfer_buffer
+				+ status_urb->iso_frame_desc[i].offset);
+
+		data = (u8 *)data_urb->transfer_buffer
+				+ data_urb->iso_frame_desc[i].offset;
+
+		/* st: 0x80-0xff: frame start with frame number (ie 0-7f)
+		 * otherwise:
+		 * bit 0 0: keep packet
+		 *	 1: drop packet (padding data)
+		 *
+		 * bit 4 0 button not clicked
+		 *       1 button clicked
+		 * button is used to `take a picture' (in software)
+		 */
+		if (st & 0x80) {
+			gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
+			gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
+		} else {
+#if IS_ENABLED(CONFIG_INPUT)
+			u8 button_state = st & 0x40 ? 1 : 0;
+			if (sd->snapshot_pressed != button_state) {
+				input_report_key(gspca_dev->input_dev,
+						 KEY_CAMERA,
+						 button_state);
+				input_sync(gspca_dev->input_dev);
+				sd->snapshot_pressed = button_state;
+			}
+#endif
+			if (st & 0x01)
+				continue;
+		}
+		gspca_frame_add(gspca_dev, INTER_PACKET, data,
+				data_urb->iso_frame_desc[i].actual_length);
+	}
+
+resubmit:
+	if (data_urb) {
+		st = usb_submit_urb(data_urb, GFP_ATOMIC);
+		if (st < 0)
+			PERR("usb_submit_urb(data_urb) ret %d", st);
+	}
+	st = usb_submit_urb(status_urb, GFP_ATOMIC);
+	if (st < 0)
+		PERR("usb_submit_urb(status_urb) ret %d\n", st);
+}
+
+static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct gspca_dev *gspca_dev =
+		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
+
+	gspca_dev->usb_err = 0;
+
+	if (!gspca_dev->streaming)
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_BRIGHTNESS:
+		konica_stream_off(gspca_dev);
+		reg_w(gspca_dev, ctrl->val, BRIGHTNESS_REG);
+		konica_stream_on(gspca_dev);
+		break;
+	case V4L2_CID_CONTRAST:
+		konica_stream_off(gspca_dev);
+		reg_w(gspca_dev, ctrl->val, CONTRAST_REG);
+		konica_stream_on(gspca_dev);
+		break;
+	case V4L2_CID_SATURATION:
+		konica_stream_off(gspca_dev);
+		reg_w(gspca_dev, ctrl->val, SATURATION_REG);
+		konica_stream_on(gspca_dev);
+		break;
+	case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
+		konica_stream_off(gspca_dev);
+		reg_w(gspca_dev, ctrl->val, WHITEBAL_REG);
+		konica_stream_on(gspca_dev);
+		break;
+	case V4L2_CID_SHARPNESS:
+		konica_stream_off(gspca_dev);
+		reg_w(gspca_dev, ctrl->val, SHARPNESS_REG);
+		konica_stream_on(gspca_dev);
+		break;
+	}
+	return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+	.s_ctrl = sd_s_ctrl,
+};
+
+static int sd_init_controls(struct gspca_dev *gspca_dev)
+{
+	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
+
+	gspca_dev->vdev.ctrl_handler = hdl;
+	v4l2_ctrl_handler_init(hdl, 5);
+	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_BRIGHTNESS, 0, 9, 1, 4);
+	/* Needs to be verified */
+	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_CONTRAST, 0, 9, 1, 4);
+	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_SATURATION, 0, 9, 1, 4);
+	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+			0, 33, 1, 25);
+	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_SHARPNESS, 0, 9, 1, 4);
+
+	if (hdl->error) {
+		pr_err("Could not initialize controls\n");
+		return hdl->error;
+	}
+	return 0;
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+	.name = MODULE_NAME,
+	.config = sd_config,
+	.init = sd_init,
+	.init_controls = sd_init_controls,
+	.start = sd_start,
+	.stopN = sd_stopN,
+#if IS_ENABLED(CONFIG_INPUT)
+	.other_input = 1,
+#endif
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+	{USB_DEVICE(0x04c8, 0x0720)}, /* Intel YC 76 */
+	{}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+			const struct usb_device_id *id)
+{
+	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
+				THIS_MODULE);
+}
+
+static struct usb_driver sd_driver = {
+	.name = MODULE_NAME,
+	.id_table = device_table,
+	.probe = sd_probe,
+	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+	.reset_resume = gspca_resume,
+#endif
+};
+
+module_usb_driver(sd_driver);