mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov: "A new driver for Surface 2.0/Pixelsense touchscreen and a couple of driver fixups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: MAINTAINERS - add keyboard driver to Hyper-V file list Input: atmel-wm97xx - fix compile error Input: hp_sdc_rtc - unlock on error in hp_sdc_rtc_read_i8042timer() Input: cyttsp4 - remove unnecessary work pending test Input: add sur40 driver for Samsung SUR40 (aka MS Surface 2.0/Pixelsense)
This commit is contained in:
Linus Torvalds
commit
76ae076f99
@ -180,7 +180,10 @@ static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg)
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if (WARN_ON(down_interruptible(&i8042tregs)))
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return -1;
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if (hp_sdc_enqueue_transaction(&t)) return -1;
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if (hp_sdc_enqueue_transaction(&t)) {
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up(&i8042tregs);
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return -1;
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}
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/* Sleep until results come back. */
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if (WARN_ON(down_interruptible(&i8042tregs)))
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@ -906,6 +906,17 @@ config TOUCHSCREEN_STMPE
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To compile this driver as a module, choose M here: the
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module will be called stmpe-ts.
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config TOUCHSCREEN_SUR40
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tristate "Samsung SUR40 (Surface 2.0/PixelSense) touchscreen"
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depends on USB
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select INPUT_POLLDEV
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help
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Say Y here if you want support for the Samsung SUR40 touchscreen
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(also known as Microsoft Surface 2.0 or Microsoft PixelSense).
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To compile this driver as a module, choose M here: the
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module will be called sur40.
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config TOUCHSCREEN_TPS6507X
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tristate "TPS6507x based touchscreens"
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depends on I2C
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@ -54,6 +54,7 @@ obj-$(CONFIG_TOUCHSCREEN_PIXCIR) += pixcir_i2c_ts.o
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obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
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obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
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obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
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obj-$(CONFIG_TOUCHSCREEN_SUR40) += sur40.o
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obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.o
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obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
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obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
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@ -391,7 +391,7 @@ static int __exit atmel_wm97xx_remove(struct platform_device *pdev)
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}
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#ifdef CONFIG_PM_SLEEP
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static int atmel_wm97xx_suspend(struct *dev)
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static int atmel_wm97xx_suspend(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct atmel_wm97xx *atmel_wm97xx = platform_get_drvdata(pdev);
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@ -1246,8 +1246,7 @@ static void cyttsp4_watchdog_timer(unsigned long handle)
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dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
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if (!work_pending(&cd->watchdog_work))
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schedule_work(&cd->watchdog_work);
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schedule_work(&cd->watchdog_work);
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return;
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}
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466
drivers/input/touchscreen/sur40.c
Normal file
466
drivers/input/touchscreen/sur40.c
Normal file
@ -0,0 +1,466 @@
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/*
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* Surface2.0/SUR40/PixelSense input driver
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*
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* Copyright (c) 2013 by Florian 'floe' Echtler <floe@butterbrot.org>
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*
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* Derived from the USB Skeleton driver 1.1,
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* Copyright (c) 2003 Greg Kroah-Hartman (greg@kroah.com)
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*
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* and from the Apple USB BCM5974 multitouch driver,
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* Copyright (c) 2008 Henrik Rydberg (rydberg@euromail.se)
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*
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* and from the generic hid-multitouch driver,
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* Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/completion.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/printk.h>
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#include <linux/input-polldev.h>
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#include <linux/input/mt.h>
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#include <linux/usb/input.h>
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/* read 512 bytes from endpoint 0x86 -> get header + blobs */
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struct sur40_header {
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__le16 type; /* always 0x0001 */
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__le16 count; /* count of blobs (if 0: continue prev. packet) */
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__le32 packet_id; /* unique ID for all packets in one frame */
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__le32 timestamp; /* milliseconds (inc. by 16 or 17 each frame) */
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__le32 unknown; /* "epoch?" always 02/03 00 00 00 */
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} __packed;
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struct sur40_blob {
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__le16 blob_id;
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u8 action; /* 0x02 = enter/exit, 0x03 = update (?) */
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u8 unknown; /* always 0x01 or 0x02 (no idea what this is?) */
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__le16 bb_pos_x; /* upper left corner of bounding box */
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__le16 bb_pos_y;
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__le16 bb_size_x; /* size of bounding box */
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__le16 bb_size_y;
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__le16 pos_x; /* finger tip position */
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__le16 pos_y;
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__le16 ctr_x; /* centroid position */
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__le16 ctr_y;
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__le16 axis_x; /* somehow related to major/minor axis, mostly: */
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__le16 axis_y; /* axis_x == bb_size_y && axis_y == bb_size_x */
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__le32 angle; /* orientation in radians relative to x axis -
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actually an IEEE754 float, don't use in kernel */
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__le32 area; /* size in pixels/pressure (?) */
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u8 padding[32];
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} __packed;
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/* combined header/blob data */
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struct sur40_data {
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struct sur40_header header;
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struct sur40_blob blobs[];
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} __packed;
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/* version information */
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#define DRIVER_SHORT "sur40"
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#define DRIVER_AUTHOR "Florian 'floe' Echtler <floe@butterbrot.org>"
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#define DRIVER_DESC "Surface2.0/SUR40/PixelSense input driver"
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/* vendor and device IDs */
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#define ID_MICROSOFT 0x045e
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#define ID_SUR40 0x0775
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/* sensor resolution */
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#define SENSOR_RES_X 1920
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#define SENSOR_RES_Y 1080
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/* touch data endpoint */
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#define TOUCH_ENDPOINT 0x86
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/* polling interval (ms) */
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#define POLL_INTERVAL 10
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/* maximum number of contacts FIXME: this is a guess? */
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#define MAX_CONTACTS 64
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/* control commands */
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#define SUR40_GET_VERSION 0xb0 /* 12 bytes string */
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#define SUR40_UNKNOWN1 0xb3 /* 5 bytes */
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#define SUR40_UNKNOWN2 0xc1 /* 24 bytes */
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#define SUR40_GET_STATE 0xc5 /* 4 bytes state (?) */
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#define SUR40_GET_SENSORS 0xb1 /* 8 bytes sensors */
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/*
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* Note: an earlier, non-public version of this driver used USB_RECIP_ENDPOINT
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* here by mistake which is very likely to have corrupted the firmware EEPROM
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* on two separate SUR40 devices. Thanks to Alan Stern who spotted this bug.
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* Should you ever run into a similar problem, the background story to this
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* incident and instructions on how to fix the corrupted EEPROM are available
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* at https://floe.butterbrot.org/matrix/hacking/surface/brick.html
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*/
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struct sur40_state {
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struct usb_device *usbdev;
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struct device *dev;
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struct input_polled_dev *input;
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struct sur40_data *bulk_in_buffer;
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size_t bulk_in_size;
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u8 bulk_in_epaddr;
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char phys[64];
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};
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static int sur40_command(struct sur40_state *dev,
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u8 command, u16 index, void *buffer, u16 size)
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{
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return usb_control_msg(dev->usbdev, usb_rcvctrlpipe(dev->usbdev, 0),
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command,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x00, index, buffer, size, 1000);
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}
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/* Initialization routine, called from sur40_open */
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static int sur40_init(struct sur40_state *dev)
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{
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int result;
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u8 buffer[24];
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/* stupidly replay the original MS driver init sequence */
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result = sur40_command(dev, SUR40_GET_VERSION, 0x00, buffer, 12);
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if (result < 0)
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return result;
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result = sur40_command(dev, SUR40_GET_VERSION, 0x01, buffer, 12);
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if (result < 0)
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return result;
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result = sur40_command(dev, SUR40_GET_VERSION, 0x02, buffer, 12);
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if (result < 0)
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return result;
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result = sur40_command(dev, SUR40_UNKNOWN2, 0x00, buffer, 24);
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if (result < 0)
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return result;
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result = sur40_command(dev, SUR40_UNKNOWN1, 0x00, buffer, 5);
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if (result < 0)
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return result;
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result = sur40_command(dev, SUR40_GET_VERSION, 0x03, buffer, 12);
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/*
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* Discard the result buffer - no known data inside except
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* some version strings, maybe extract these sometime...
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*/
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return result;
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}
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/*
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* Callback routines from input_polled_dev
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*/
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/* Enable the device, polling will now start. */
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static void sur40_open(struct input_polled_dev *polldev)
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{
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struct sur40_state *sur40 = polldev->private;
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dev_dbg(sur40->dev, "open\n");
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sur40_init(sur40);
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}
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/* Disable device, polling has stopped. */
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static void sur40_close(struct input_polled_dev *polldev)
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{
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struct sur40_state *sur40 = polldev->private;
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dev_dbg(sur40->dev, "close\n");
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/*
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* There is no known way to stop the device, so we simply
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* stop polling.
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*/
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}
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/*
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* This function is called when a whole contact has been processed,
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* so that it can assign it to a slot and store the data there.
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*/
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static void sur40_report_blob(struct sur40_blob *blob, struct input_dev *input)
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{
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int wide, major, minor;
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int bb_size_x = le16_to_cpu(blob->bb_size_x);
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int bb_size_y = le16_to_cpu(blob->bb_size_y);
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int pos_x = le16_to_cpu(blob->pos_x);
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int pos_y = le16_to_cpu(blob->pos_y);
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||||
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||||
int ctr_x = le16_to_cpu(blob->ctr_x);
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||||
int ctr_y = le16_to_cpu(blob->ctr_y);
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||||
|
||||
int slotnum = input_mt_get_slot_by_key(input, blob->blob_id);
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if (slotnum < 0 || slotnum >= MAX_CONTACTS)
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return;
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||||
|
||||
input_mt_slot(input, slotnum);
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||||
input_mt_report_slot_state(input, MT_TOOL_FINGER, 1);
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wide = (bb_size_x > bb_size_y);
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||||
major = max(bb_size_x, bb_size_y);
|
||||
minor = min(bb_size_x, bb_size_y);
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||||
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||||
input_report_abs(input, ABS_MT_POSITION_X, pos_x);
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||||
input_report_abs(input, ABS_MT_POSITION_Y, pos_y);
|
||||
input_report_abs(input, ABS_MT_TOOL_X, ctr_x);
|
||||
input_report_abs(input, ABS_MT_TOOL_Y, ctr_y);
|
||||
|
||||
/* TODO: use a better orientation measure */
|
||||
input_report_abs(input, ABS_MT_ORIENTATION, wide);
|
||||
input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
|
||||
input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
|
||||
}
|
||||
|
||||
/* core function: poll for new input data */
|
||||
static void sur40_poll(struct input_polled_dev *polldev)
|
||||
{
|
||||
|
||||
struct sur40_state *sur40 = polldev->private;
|
||||
struct input_dev *input = polldev->input;
|
||||
int result, bulk_read, need_blobs, packet_blobs, i;
|
||||
u32 packet_id;
|
||||
|
||||
struct sur40_header *header = &sur40->bulk_in_buffer->header;
|
||||
struct sur40_blob *inblob = &sur40->bulk_in_buffer->blobs[0];
|
||||
|
||||
dev_dbg(sur40->dev, "poll\n");
|
||||
|
||||
need_blobs = -1;
|
||||
|
||||
do {
|
||||
|
||||
/* perform a blocking bulk read to get data from the device */
|
||||
result = usb_bulk_msg(sur40->usbdev,
|
||||
usb_rcvbulkpipe(sur40->usbdev, sur40->bulk_in_epaddr),
|
||||
sur40->bulk_in_buffer, sur40->bulk_in_size,
|
||||
&bulk_read, 1000);
|
||||
|
||||
dev_dbg(sur40->dev, "received %d bytes\n", bulk_read);
|
||||
|
||||
if (result < 0) {
|
||||
dev_err(sur40->dev, "error in usb_bulk_read\n");
|
||||
return;
|
||||
}
|
||||
|
||||
result = bulk_read - sizeof(struct sur40_header);
|
||||
|
||||
if (result % sizeof(struct sur40_blob) != 0) {
|
||||
dev_err(sur40->dev, "transfer size mismatch\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* first packet? */
|
||||
if (need_blobs == -1) {
|
||||
need_blobs = le16_to_cpu(header->count);
|
||||
dev_dbg(sur40->dev, "need %d blobs\n", need_blobs);
|
||||
packet_id = header->packet_id;
|
||||
}
|
||||
|
||||
/*
|
||||
* Sanity check. when video data is also being retrieved, the
|
||||
* packet ID will usually increase in the middle of a series
|
||||
* instead of at the end.
|
||||
*/
|
||||
if (packet_id != header->packet_id)
|
||||
dev_warn(sur40->dev, "packet ID mismatch\n");
|
||||
|
||||
packet_blobs = result / sizeof(struct sur40_blob);
|
||||
dev_dbg(sur40->dev, "received %d blobs\n", packet_blobs);
|
||||
|
||||
/* packets always contain at least 4 blobs, even if empty */
|
||||
if (packet_blobs > need_blobs)
|
||||
packet_blobs = need_blobs;
|
||||
|
||||
for (i = 0; i < packet_blobs; i++) {
|
||||
need_blobs--;
|
||||
dev_dbg(sur40->dev, "processing blob\n");
|
||||
sur40_report_blob(&(inblob[i]), input);
|
||||
}
|
||||
|
||||
} while (need_blobs > 0);
|
||||
|
||||
input_mt_sync_frame(input);
|
||||
input_sync(input);
|
||||
}
|
||||
|
||||
/* Initialize input device parameters. */
|
||||
static void sur40_input_setup(struct input_dev *input_dev)
|
||||
{
|
||||
__set_bit(EV_KEY, input_dev->evbit);
|
||||
__set_bit(EV_ABS, input_dev->evbit);
|
||||
|
||||
input_set_abs_params(input_dev, ABS_MT_POSITION_X,
|
||||
0, SENSOR_RES_X, 0, 0);
|
||||
input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
|
||||
0, SENSOR_RES_Y, 0, 0);
|
||||
|
||||
input_set_abs_params(input_dev, ABS_MT_TOOL_X,
|
||||
0, SENSOR_RES_X, 0, 0);
|
||||
input_set_abs_params(input_dev, ABS_MT_TOOL_Y,
|
||||
0, SENSOR_RES_Y, 0, 0);
|
||||
|
||||
/* max value unknown, but major/minor axis
|
||||
* can never be larger than screen */
|
||||
input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
|
||||
0, SENSOR_RES_X, 0, 0);
|
||||
input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR,
|
||||
0, SENSOR_RES_Y, 0, 0);
|
||||
|
||||
input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
|
||||
|
||||
input_mt_init_slots(input_dev, MAX_CONTACTS,
|
||||
INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
|
||||
}
|
||||
|
||||
/* Check candidate USB interface. */
|
||||
static int sur40_probe(struct usb_interface *interface,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
struct usb_device *usbdev = interface_to_usbdev(interface);
|
||||
struct sur40_state *sur40;
|
||||
struct usb_host_interface *iface_desc;
|
||||
struct usb_endpoint_descriptor *endpoint;
|
||||
struct input_polled_dev *poll_dev;
|
||||
int error;
|
||||
|
||||
/* Check if we really have the right interface. */
|
||||
iface_desc = &interface->altsetting[0];
|
||||
if (iface_desc->desc.bInterfaceClass != 0xFF)
|
||||
return -ENODEV;
|
||||
|
||||
/* Use endpoint #4 (0x86). */
|
||||
endpoint = &iface_desc->endpoint[4].desc;
|
||||
if (endpoint->bEndpointAddress != TOUCH_ENDPOINT)
|
||||
return -ENODEV;
|
||||
|
||||
/* Allocate memory for our device state and initialize it. */
|
||||
sur40 = kzalloc(sizeof(struct sur40_state), GFP_KERNEL);
|
||||
if (!sur40)
|
||||
return -ENOMEM;
|
||||
|
||||
poll_dev = input_allocate_polled_device();
|
||||
if (!poll_dev) {
|
||||
error = -ENOMEM;
|
||||
goto err_free_dev;
|
||||
}
|
||||
|
||||
/* Set up polled input device control structure */
|
||||
poll_dev->private = sur40;
|
||||
poll_dev->poll_interval = POLL_INTERVAL;
|
||||
poll_dev->open = sur40_open;
|
||||
poll_dev->poll = sur40_poll;
|
||||
poll_dev->close = sur40_close;
|
||||
|
||||
/* Set up regular input device structure */
|
||||
sur40_input_setup(poll_dev->input);
|
||||
|
||||
poll_dev->input->name = "Samsung SUR40";
|
||||
usb_to_input_id(usbdev, &poll_dev->input->id);
|
||||
usb_make_path(usbdev, sur40->phys, sizeof(sur40->phys));
|
||||
strlcat(sur40->phys, "/input0", sizeof(sur40->phys));
|
||||
poll_dev->input->phys = sur40->phys;
|
||||
poll_dev->input->dev.parent = &interface->dev;
|
||||
|
||||
sur40->usbdev = usbdev;
|
||||
sur40->dev = &interface->dev;
|
||||
sur40->input = poll_dev;
|
||||
|
||||
/* use the bulk-in endpoint tested above */
|
||||
sur40->bulk_in_size = usb_endpoint_maxp(endpoint);
|
||||
sur40->bulk_in_epaddr = endpoint->bEndpointAddress;
|
||||
sur40->bulk_in_buffer = kmalloc(sur40->bulk_in_size, GFP_KERNEL);
|
||||
if (!sur40->bulk_in_buffer) {
|
||||
dev_err(&interface->dev, "Unable to allocate input buffer.");
|
||||
error = -ENOMEM;
|
||||
goto err_free_polldev;
|
||||
}
|
||||
|
||||
error = input_register_polled_device(poll_dev);
|
||||
if (error) {
|
||||
dev_err(&interface->dev,
|
||||
"Unable to register polled input device.");
|
||||
goto err_free_buffer;
|
||||
}
|
||||
|
||||
/* we can register the device now, as it is ready */
|
||||
usb_set_intfdata(interface, sur40);
|
||||
dev_dbg(&interface->dev, "%s is now attached\n", DRIVER_DESC);
|
||||
|
||||
return 0;
|
||||
|
||||
err_free_buffer:
|
||||
kfree(sur40->bulk_in_buffer);
|
||||
err_free_polldev:
|
||||
input_free_polled_device(sur40->input);
|
||||
err_free_dev:
|
||||
kfree(sur40);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
/* Unregister device & clean up. */
|
||||
static void sur40_disconnect(struct usb_interface *interface)
|
||||
{
|
||||
struct sur40_state *sur40 = usb_get_intfdata(interface);
|
||||
|
||||
input_unregister_polled_device(sur40->input);
|
||||
input_free_polled_device(sur40->input);
|
||||
kfree(sur40->bulk_in_buffer);
|
||||
kfree(sur40);
|
||||
|
||||
usb_set_intfdata(interface, NULL);
|
||||
dev_dbg(&interface->dev, "%s is now disconnected\n", DRIVER_DESC);
|
||||
}
|
||||
|
||||
static const struct usb_device_id sur40_table[] = {
|
||||
{ USB_DEVICE(ID_MICROSOFT, ID_SUR40) }, /* Samsung SUR40 */
|
||||
{ } /* terminating null entry */
|
||||
};
|
||||
MODULE_DEVICE_TABLE(usb, sur40_table);
|
||||
|
||||
/* USB-specific object needed to register this driver with the USB subsystem. */
|
||||
static struct usb_driver sur40_driver = {
|
||||
.name = DRIVER_SHORT,
|
||||
.probe = sur40_probe,
|
||||
.disconnect = sur40_disconnect,
|
||||
.id_table = sur40_table,
|
||||
};
|
||||
|
||||
module_usb_driver(sur40_driver);
|
||||
|
||||
MODULE_AUTHOR(DRIVER_AUTHOR);
|
||||
MODULE_DESCRIPTION(DRIVER_DESC);
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user