forked from luck/tmp_suning_uos_patched
9c8f55798a
I have a static checker that complains when we check for an upper bound but don't have a corresponding check for a lower bound. With this code, the upper bound check seems not really required, so it is not a bug to leave the lower bound check out as well. But let's silence the warning by making these variables unsigned. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
1090 lines
26 KiB
C
1090 lines
26 KiB
C
/*-
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* Finger Sensing Pad PS/2 mouse driver.
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*
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* Copyright (C) 2005-2007 Asia Vital Components Co., Ltd.
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* Copyright (C) 2005-2012 Tai-hwa Liang, Sentelic Corporation.
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/input.h>
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#include <linux/input/mt.h>
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#include <linux/ctype.h>
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#include <linux/libps2.h>
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#include <linux/serio.h>
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#include <linux/jiffies.h>
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#include <linux/slab.h>
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#include "psmouse.h"
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#include "sentelic.h"
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/*
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* Timeout for FSP PS/2 command only (in milliseconds).
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*/
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#define FSP_CMD_TIMEOUT 200
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#define FSP_CMD_TIMEOUT2 30
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#define GET_ABS_X(packet) ((packet[1] << 2) | ((packet[3] >> 2) & 0x03))
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#define GET_ABS_Y(packet) ((packet[2] << 2) | (packet[3] & 0x03))
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/** Driver version. */
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static const char fsp_drv_ver[] = "1.1.0-K";
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/*
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* Make sure that the value being sent to FSP will not conflict with
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* possible sample rate values.
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*/
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static unsigned char fsp_test_swap_cmd(unsigned char reg_val)
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{
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switch (reg_val) {
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case 10: case 20: case 40: case 60: case 80: case 100: case 200:
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/*
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* The requested value being sent to FSP matched to possible
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* sample rates, swap the given value such that the hardware
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* wouldn't get confused.
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*/
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return (reg_val >> 4) | (reg_val << 4);
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default:
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return reg_val; /* swap isn't necessary */
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}
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}
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/*
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* Make sure that the value being sent to FSP will not conflict with certain
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* commands.
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*/
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static unsigned char fsp_test_invert_cmd(unsigned char reg_val)
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{
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switch (reg_val) {
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case 0xe9: case 0xee: case 0xf2: case 0xff:
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/*
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* The requested value being sent to FSP matched to certain
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* commands, inverse the given value such that the hardware
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* wouldn't get confused.
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*/
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return ~reg_val;
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default:
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return reg_val; /* inversion isn't necessary */
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}
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}
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static int fsp_reg_read(struct psmouse *psmouse, int reg_addr, int *reg_val)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char param[3];
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unsigned char addr;
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int rc = -1;
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/*
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* We need to shut off the device and switch it into command
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* mode so we don't confuse our protocol handler. We don't need
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* to do that for writes because sysfs set helper does this for
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* us.
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*/
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psmouse_deactivate(psmouse);
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ps2_begin_command(ps2dev);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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/* should return 0xfe(request for resending) */
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ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
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/* should return 0xfc(failed) */
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ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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if ((addr = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
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ps2_sendbyte(ps2dev, 0x68, FSP_CMD_TIMEOUT2);
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} else if ((addr = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
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/* swapping is required */
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ps2_sendbyte(ps2dev, 0xcc, FSP_CMD_TIMEOUT2);
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/* expect 0xfe */
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} else {
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/* swapping isn't necessary */
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ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
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/* expect 0xfe */
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}
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/* should return 0xfc(failed) */
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ps2_sendbyte(ps2dev, addr, FSP_CMD_TIMEOUT);
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if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) < 0)
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goto out;
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*reg_val = param[2];
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rc = 0;
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out:
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ps2_end_command(ps2dev);
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psmouse_activate(psmouse);
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psmouse_dbg(psmouse,
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"READ REG: 0x%02x is 0x%02x (rc = %d)\n",
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reg_addr, *reg_val, rc);
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return rc;
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}
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static int fsp_reg_write(struct psmouse *psmouse, int reg_addr, int reg_val)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char v;
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int rc = -1;
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ps2_begin_command(ps2dev);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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if ((v = fsp_test_invert_cmd(reg_addr)) != reg_addr) {
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/* inversion is required */
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ps2_sendbyte(ps2dev, 0x74, FSP_CMD_TIMEOUT2);
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} else {
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if ((v = fsp_test_swap_cmd(reg_addr)) != reg_addr) {
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/* swapping is required */
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ps2_sendbyte(ps2dev, 0x77, FSP_CMD_TIMEOUT2);
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} else {
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/* swapping isn't necessary */
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ps2_sendbyte(ps2dev, 0x55, FSP_CMD_TIMEOUT2);
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}
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}
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/* write the register address in correct order */
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ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
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/* inversion is required */
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ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
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} else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
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/* swapping is required */
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ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
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} else {
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/* swapping isn't necessary */
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ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
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}
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/* write the register value in correct order */
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ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
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rc = 0;
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out:
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ps2_end_command(ps2dev);
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psmouse_dbg(psmouse,
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"WRITE REG: 0x%02x to 0x%02x (rc = %d)\n",
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reg_addr, reg_val, rc);
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return rc;
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}
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/* Enable register clock gating for writing certain registers */
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static int fsp_reg_write_enable(struct psmouse *psmouse, bool enable)
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{
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int v, nv;
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if (fsp_reg_read(psmouse, FSP_REG_SYSCTL1, &v) == -1)
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return -1;
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if (enable)
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nv = v | FSP_BIT_EN_REG_CLK;
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else
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nv = v & ~FSP_BIT_EN_REG_CLK;
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/* only write if necessary */
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if (nv != v)
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if (fsp_reg_write(psmouse, FSP_REG_SYSCTL1, nv) == -1)
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return -1;
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return 0;
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}
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static int fsp_page_reg_read(struct psmouse *psmouse, int *reg_val)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char param[3];
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int rc = -1;
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psmouse_deactivate(psmouse);
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ps2_begin_command(ps2dev);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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ps2_sendbyte(ps2dev, 0x66, FSP_CMD_TIMEOUT2);
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ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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ps2_sendbyte(ps2dev, 0x83, FSP_CMD_TIMEOUT2);
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ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
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/* get the returned result */
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if (__ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
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goto out;
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*reg_val = param[2];
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rc = 0;
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out:
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ps2_end_command(ps2dev);
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psmouse_activate(psmouse);
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psmouse_dbg(psmouse,
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"READ PAGE REG: 0x%02x (rc = %d)\n",
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*reg_val, rc);
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return rc;
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}
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static int fsp_page_reg_write(struct psmouse *psmouse, int reg_val)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char v;
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int rc = -1;
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ps2_begin_command(ps2dev);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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ps2_sendbyte(ps2dev, 0x38, FSP_CMD_TIMEOUT2);
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ps2_sendbyte(ps2dev, 0x88, FSP_CMD_TIMEOUT2);
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if (ps2_sendbyte(ps2dev, 0xf3, FSP_CMD_TIMEOUT) < 0)
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goto out;
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if ((v = fsp_test_invert_cmd(reg_val)) != reg_val) {
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ps2_sendbyte(ps2dev, 0x47, FSP_CMD_TIMEOUT2);
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} else if ((v = fsp_test_swap_cmd(reg_val)) != reg_val) {
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/* swapping is required */
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ps2_sendbyte(ps2dev, 0x44, FSP_CMD_TIMEOUT2);
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} else {
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/* swapping isn't necessary */
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ps2_sendbyte(ps2dev, 0x33, FSP_CMD_TIMEOUT2);
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}
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ps2_sendbyte(ps2dev, v, FSP_CMD_TIMEOUT2);
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rc = 0;
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out:
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ps2_end_command(ps2dev);
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psmouse_dbg(psmouse,
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"WRITE PAGE REG: to 0x%02x (rc = %d)\n",
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reg_val, rc);
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return rc;
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}
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static int fsp_get_version(struct psmouse *psmouse, int *version)
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{
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if (fsp_reg_read(psmouse, FSP_REG_VERSION, version))
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return -EIO;
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return 0;
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}
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static int fsp_get_revision(struct psmouse *psmouse, int *rev)
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{
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if (fsp_reg_read(psmouse, FSP_REG_REVISION, rev))
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return -EIO;
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return 0;
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}
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static int fsp_get_sn(struct psmouse *psmouse, int *sn)
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{
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int v0, v1, v2;
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int rc = -EIO;
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/* production number since Cx is available at: 0x0b40 ~ 0x0b42 */
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if (fsp_page_reg_write(psmouse, FSP_PAGE_0B))
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goto out;
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if (fsp_reg_read(psmouse, FSP_REG_SN0, &v0))
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goto out;
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if (fsp_reg_read(psmouse, FSP_REG_SN1, &v1))
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goto out;
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if (fsp_reg_read(psmouse, FSP_REG_SN2, &v2))
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goto out;
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*sn = (v0 << 16) | (v1 << 8) | v2;
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rc = 0;
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out:
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fsp_page_reg_write(psmouse, FSP_PAGE_DEFAULT);
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return rc;
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}
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static int fsp_get_buttons(struct psmouse *psmouse, int *btn)
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{
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static const int buttons[] = {
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0x16, /* Left/Middle/Right/Forward/Backward & Scroll Up/Down */
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0x06, /* Left/Middle/Right & Scroll Up/Down/Right/Left */
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0x04, /* Left/Middle/Right & Scroll Up/Down */
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0x02, /* Left/Middle/Right */
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};
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int val;
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if (fsp_reg_read(psmouse, FSP_REG_TMOD_STATUS, &val) == -1)
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return -EIO;
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*btn = buttons[(val & 0x30) >> 4];
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return 0;
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}
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|
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/* Enable on-pad command tag output */
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static int fsp_opc_tag_enable(struct psmouse *psmouse, bool enable)
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{
|
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int v, nv;
|
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int res = 0;
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if (fsp_reg_read(psmouse, FSP_REG_OPC_QDOWN, &v) == -1) {
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psmouse_err(psmouse, "Unable get OPC state.\n");
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return -EIO;
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}
|
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|
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if (enable)
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nv = v | FSP_BIT_EN_OPC_TAG;
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else
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nv = v & ~FSP_BIT_EN_OPC_TAG;
|
|
|
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/* only write if necessary */
|
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if (nv != v) {
|
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fsp_reg_write_enable(psmouse, true);
|
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res = fsp_reg_write(psmouse, FSP_REG_OPC_QDOWN, nv);
|
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fsp_reg_write_enable(psmouse, false);
|
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}
|
|
|
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if (res != 0) {
|
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psmouse_err(psmouse, "Unable to enable OPC tag.\n");
|
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res = -EIO;
|
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}
|
|
|
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return res;
|
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}
|
|
|
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static int fsp_onpad_vscr(struct psmouse *psmouse, bool enable)
|
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{
|
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struct fsp_data *pad = psmouse->private;
|
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int val;
|
|
|
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if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
|
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return -EIO;
|
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|
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pad->vscroll = enable;
|
|
|
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if (enable)
|
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val |= (FSP_BIT_FIX_VSCR | FSP_BIT_ONPAD_ENABLE);
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else
|
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val &= ~FSP_BIT_FIX_VSCR;
|
|
|
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if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
|
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return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsp_onpad_hscr(struct psmouse *psmouse, bool enable)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
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int val, v2;
|
|
|
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if (fsp_reg_read(psmouse, FSP_REG_ONPAD_CTL, &val))
|
|
return -EIO;
|
|
|
|
if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &v2))
|
|
return -EIO;
|
|
|
|
pad->hscroll = enable;
|
|
|
|
if (enable) {
|
|
val |= (FSP_BIT_FIX_HSCR | FSP_BIT_ONPAD_ENABLE);
|
|
v2 |= FSP_BIT_EN_MSID6;
|
|
} else {
|
|
val &= ~FSP_BIT_FIX_HSCR;
|
|
v2 &= ~(FSP_BIT_EN_MSID6 | FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8);
|
|
}
|
|
|
|
if (fsp_reg_write(psmouse, FSP_REG_ONPAD_CTL, val))
|
|
return -EIO;
|
|
|
|
/* reconfigure horizontal scrolling packet output */
|
|
if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, v2))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Write device specific initial parameters.
|
|
*
|
|
* ex: 0xab 0xcd - write oxcd into register 0xab
|
|
*/
|
|
static ssize_t fsp_attr_set_setreg(struct psmouse *psmouse, void *data,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned int reg, val;
|
|
char *rest;
|
|
ssize_t retval;
|
|
|
|
reg = simple_strtoul(buf, &rest, 16);
|
|
if (rest == buf || *rest != ' ' || reg > 0xff)
|
|
return -EINVAL;
|
|
|
|
retval = kstrtouint(rest + 1, 16, &val);
|
|
if (retval)
|
|
return retval;
|
|
|
|
if (val > 0xff)
|
|
return -EINVAL;
|
|
|
|
if (fsp_reg_write_enable(psmouse, true))
|
|
return -EIO;
|
|
|
|
retval = fsp_reg_write(psmouse, reg, val) < 0 ? -EIO : count;
|
|
|
|
fsp_reg_write_enable(psmouse, false);
|
|
|
|
return count;
|
|
}
|
|
|
|
PSMOUSE_DEFINE_WO_ATTR(setreg, S_IWUSR, NULL, fsp_attr_set_setreg);
|
|
|
|
static ssize_t fsp_attr_show_getreg(struct psmouse *psmouse,
|
|
void *data, char *buf)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
|
|
return sprintf(buf, "%02x%02x\n", pad->last_reg, pad->last_val);
|
|
}
|
|
|
|
/*
|
|
* Read a register from device.
|
|
*
|
|
* ex: 0xab -- read content from register 0xab
|
|
*/
|
|
static ssize_t fsp_attr_set_getreg(struct psmouse *psmouse, void *data,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
unsigned int reg, val;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 16, ®);
|
|
if (err)
|
|
return err;
|
|
|
|
if (reg > 0xff)
|
|
return -EINVAL;
|
|
|
|
if (fsp_reg_read(psmouse, reg, &val))
|
|
return -EIO;
|
|
|
|
pad->last_reg = reg;
|
|
pad->last_val = val;
|
|
|
|
return count;
|
|
}
|
|
|
|
PSMOUSE_DEFINE_ATTR(getreg, S_IWUSR | S_IRUGO, NULL,
|
|
fsp_attr_show_getreg, fsp_attr_set_getreg);
|
|
|
|
static ssize_t fsp_attr_show_pagereg(struct psmouse *psmouse,
|
|
void *data, char *buf)
|
|
{
|
|
int val = 0;
|
|
|
|
if (fsp_page_reg_read(psmouse, &val))
|
|
return -EIO;
|
|
|
|
return sprintf(buf, "%02x\n", val);
|
|
}
|
|
|
|
static ssize_t fsp_attr_set_pagereg(struct psmouse *psmouse, void *data,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned int val;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 16, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (val > 0xff)
|
|
return -EINVAL;
|
|
|
|
if (fsp_page_reg_write(psmouse, val))
|
|
return -EIO;
|
|
|
|
return count;
|
|
}
|
|
|
|
PSMOUSE_DEFINE_ATTR(page, S_IWUSR | S_IRUGO, NULL,
|
|
fsp_attr_show_pagereg, fsp_attr_set_pagereg);
|
|
|
|
static ssize_t fsp_attr_show_vscroll(struct psmouse *psmouse,
|
|
void *data, char *buf)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
|
|
return sprintf(buf, "%d\n", pad->vscroll);
|
|
}
|
|
|
|
static ssize_t fsp_attr_set_vscroll(struct psmouse *psmouse, void *data,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned int val;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (val > 1)
|
|
return -EINVAL;
|
|
|
|
fsp_onpad_vscr(psmouse, val);
|
|
|
|
return count;
|
|
}
|
|
|
|
PSMOUSE_DEFINE_ATTR(vscroll, S_IWUSR | S_IRUGO, NULL,
|
|
fsp_attr_show_vscroll, fsp_attr_set_vscroll);
|
|
|
|
static ssize_t fsp_attr_show_hscroll(struct psmouse *psmouse,
|
|
void *data, char *buf)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
|
|
return sprintf(buf, "%d\n", pad->hscroll);
|
|
}
|
|
|
|
static ssize_t fsp_attr_set_hscroll(struct psmouse *psmouse, void *data,
|
|
const char *buf, size_t count)
|
|
{
|
|
unsigned int val;
|
|
int err;
|
|
|
|
err = kstrtouint(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (val > 1)
|
|
return -EINVAL;
|
|
|
|
fsp_onpad_hscr(psmouse, val);
|
|
|
|
return count;
|
|
}
|
|
|
|
PSMOUSE_DEFINE_ATTR(hscroll, S_IWUSR | S_IRUGO, NULL,
|
|
fsp_attr_show_hscroll, fsp_attr_set_hscroll);
|
|
|
|
static ssize_t fsp_attr_show_flags(struct psmouse *psmouse,
|
|
void *data, char *buf)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
|
|
return sprintf(buf, "%c\n",
|
|
pad->flags & FSPDRV_FLAG_EN_OPC ? 'C' : 'c');
|
|
}
|
|
|
|
static ssize_t fsp_attr_set_flags(struct psmouse *psmouse, void *data,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
size_t i;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
switch (buf[i]) {
|
|
case 'C':
|
|
pad->flags |= FSPDRV_FLAG_EN_OPC;
|
|
break;
|
|
case 'c':
|
|
pad->flags &= ~FSPDRV_FLAG_EN_OPC;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
PSMOUSE_DEFINE_ATTR(flags, S_IWUSR | S_IRUGO, NULL,
|
|
fsp_attr_show_flags, fsp_attr_set_flags);
|
|
|
|
static ssize_t fsp_attr_show_ver(struct psmouse *psmouse,
|
|
void *data, char *buf)
|
|
{
|
|
return sprintf(buf, "Sentelic FSP kernel module %s\n", fsp_drv_ver);
|
|
}
|
|
|
|
PSMOUSE_DEFINE_RO_ATTR(ver, S_IRUGO, NULL, fsp_attr_show_ver);
|
|
|
|
static struct attribute *fsp_attributes[] = {
|
|
&psmouse_attr_setreg.dattr.attr,
|
|
&psmouse_attr_getreg.dattr.attr,
|
|
&psmouse_attr_page.dattr.attr,
|
|
&psmouse_attr_vscroll.dattr.attr,
|
|
&psmouse_attr_hscroll.dattr.attr,
|
|
&psmouse_attr_flags.dattr.attr,
|
|
&psmouse_attr_ver.dattr.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group fsp_attribute_group = {
|
|
.attrs = fsp_attributes,
|
|
};
|
|
|
|
#ifdef FSP_DEBUG
|
|
static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
|
|
{
|
|
static unsigned int ps2_packet_cnt;
|
|
static unsigned int ps2_last_second;
|
|
unsigned int jiffies_msec;
|
|
const char *packet_type = "UNKNOWN";
|
|
unsigned short abs_x = 0, abs_y = 0;
|
|
|
|
/* Interpret & dump the packet data. */
|
|
switch (packet[0] >> FSP_PKT_TYPE_SHIFT) {
|
|
case FSP_PKT_TYPE_ABS:
|
|
packet_type = "Absolute";
|
|
abs_x = GET_ABS_X(packet);
|
|
abs_y = GET_ABS_Y(packet);
|
|
break;
|
|
case FSP_PKT_TYPE_NORMAL:
|
|
packet_type = "Normal";
|
|
break;
|
|
case FSP_PKT_TYPE_NOTIFY:
|
|
packet_type = "Notify";
|
|
break;
|
|
case FSP_PKT_TYPE_NORMAL_OPC:
|
|
packet_type = "Normal-OPC";
|
|
break;
|
|
}
|
|
|
|
ps2_packet_cnt++;
|
|
jiffies_msec = jiffies_to_msecs(jiffies);
|
|
psmouse_dbg(psmouse,
|
|
"%08dms %s packets: %02x, %02x, %02x, %02x; "
|
|
"abs_x: %d, abs_y: %d\n",
|
|
jiffies_msec, packet_type,
|
|
packet[0], packet[1], packet[2], packet[3], abs_x, abs_y);
|
|
|
|
if (jiffies_msec - ps2_last_second > 1000) {
|
|
psmouse_dbg(psmouse, "PS/2 packets/sec = %d\n", ps2_packet_cnt);
|
|
ps2_packet_cnt = 0;
|
|
ps2_last_second = jiffies_msec;
|
|
}
|
|
}
|
|
#else
|
|
static void fsp_packet_debug(struct psmouse *psmouse, unsigned char packet[])
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static void fsp_set_slot(struct input_dev *dev, int slot, bool active,
|
|
unsigned int x, unsigned int y)
|
|
{
|
|
input_mt_slot(dev, slot);
|
|
input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
|
|
if (active) {
|
|
input_report_abs(dev, ABS_MT_POSITION_X, x);
|
|
input_report_abs(dev, ABS_MT_POSITION_Y, y);
|
|
}
|
|
}
|
|
|
|
static psmouse_ret_t fsp_process_byte(struct psmouse *psmouse)
|
|
{
|
|
struct input_dev *dev = psmouse->dev;
|
|
struct fsp_data *ad = psmouse->private;
|
|
unsigned char *packet = psmouse->packet;
|
|
unsigned char button_status = 0, lscroll = 0, rscroll = 0;
|
|
unsigned short abs_x, abs_y, fgrs = 0;
|
|
int rel_x, rel_y;
|
|
|
|
if (psmouse->pktcnt < 4)
|
|
return PSMOUSE_GOOD_DATA;
|
|
|
|
/*
|
|
* Full packet accumulated, process it
|
|
*/
|
|
|
|
fsp_packet_debug(psmouse, packet);
|
|
|
|
switch (psmouse->packet[0] >> FSP_PKT_TYPE_SHIFT) {
|
|
case FSP_PKT_TYPE_ABS:
|
|
|
|
if ((packet[0] == 0x48 || packet[0] == 0x49) &&
|
|
packet[1] == 0 && packet[2] == 0) {
|
|
/*
|
|
* Ignore coordinate noise when finger leaving the
|
|
* surface, otherwise cursor may jump to upper-left
|
|
* corner.
|
|
*/
|
|
packet[3] &= 0xf0;
|
|
}
|
|
|
|
abs_x = GET_ABS_X(packet);
|
|
abs_y = GET_ABS_Y(packet);
|
|
|
|
if (packet[0] & FSP_PB0_MFMC) {
|
|
/*
|
|
* MFMC packet: assume that there are two fingers on
|
|
* pad
|
|
*/
|
|
fgrs = 2;
|
|
|
|
/* MFMC packet */
|
|
if (packet[0] & FSP_PB0_MFMC_FGR2) {
|
|
/* 2nd finger */
|
|
if (ad->last_mt_fgr == 2) {
|
|
/*
|
|
* workaround for buggy firmware
|
|
* which doesn't clear MFMC bit if
|
|
* the 1st finger is up
|
|
*/
|
|
fgrs = 1;
|
|
fsp_set_slot(dev, 0, false, 0, 0);
|
|
}
|
|
ad->last_mt_fgr = 2;
|
|
|
|
fsp_set_slot(dev, 1, fgrs == 2, abs_x, abs_y);
|
|
} else {
|
|
/* 1st finger */
|
|
if (ad->last_mt_fgr == 1) {
|
|
/*
|
|
* workaround for buggy firmware
|
|
* which doesn't clear MFMC bit if
|
|
* the 2nd finger is up
|
|
*/
|
|
fgrs = 1;
|
|
fsp_set_slot(dev, 1, false, 0, 0);
|
|
}
|
|
ad->last_mt_fgr = 1;
|
|
fsp_set_slot(dev, 0, fgrs != 0, abs_x, abs_y);
|
|
}
|
|
} else {
|
|
/* SFAC packet */
|
|
if ((packet[0] & (FSP_PB0_LBTN|FSP_PB0_PHY_BTN)) ==
|
|
FSP_PB0_LBTN) {
|
|
/* On-pad click in SFAC mode should be handled
|
|
* by userspace. On-pad clicks in MFMC mode
|
|
* are real clickpad clicks, and not ignored.
|
|
*/
|
|
packet[0] &= ~FSP_PB0_LBTN;
|
|
}
|
|
|
|
/* no multi-finger information */
|
|
ad->last_mt_fgr = 0;
|
|
|
|
if (abs_x != 0 && abs_y != 0)
|
|
fgrs = 1;
|
|
|
|
fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y);
|
|
fsp_set_slot(dev, 1, false, 0, 0);
|
|
}
|
|
if (fgrs == 1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) {
|
|
input_report_abs(dev, ABS_X, abs_x);
|
|
input_report_abs(dev, ABS_Y, abs_y);
|
|
}
|
|
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
|
|
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
|
|
input_report_key(dev, BTN_TOUCH, fgrs);
|
|
input_report_key(dev, BTN_TOOL_FINGER, fgrs == 1);
|
|
input_report_key(dev, BTN_TOOL_DOUBLETAP, fgrs == 2);
|
|
break;
|
|
|
|
case FSP_PKT_TYPE_NORMAL_OPC:
|
|
/* on-pad click, filter it if necessary */
|
|
if ((ad->flags & FSPDRV_FLAG_EN_OPC) != FSPDRV_FLAG_EN_OPC)
|
|
packet[0] &= ~FSP_PB0_LBTN;
|
|
/* fall through */
|
|
|
|
case FSP_PKT_TYPE_NORMAL:
|
|
/* normal packet */
|
|
/* special packet data translation from on-pad packets */
|
|
if (packet[3] != 0) {
|
|
if (packet[3] & BIT(0))
|
|
button_status |= 0x01; /* wheel down */
|
|
if (packet[3] & BIT(1))
|
|
button_status |= 0x0f; /* wheel up */
|
|
if (packet[3] & BIT(2))
|
|
button_status |= BIT(4);/* horizontal left */
|
|
if (packet[3] & BIT(3))
|
|
button_status |= BIT(5);/* horizontal right */
|
|
/* push back to packet queue */
|
|
if (button_status != 0)
|
|
packet[3] = button_status;
|
|
rscroll = (packet[3] >> 4) & 1;
|
|
lscroll = (packet[3] >> 5) & 1;
|
|
}
|
|
/*
|
|
* Processing wheel up/down and extra button events
|
|
*/
|
|
input_report_rel(dev, REL_WHEEL,
|
|
(int)(packet[3] & 8) - (int)(packet[3] & 7));
|
|
input_report_rel(dev, REL_HWHEEL, lscroll - rscroll);
|
|
input_report_key(dev, BTN_BACK, lscroll);
|
|
input_report_key(dev, BTN_FORWARD, rscroll);
|
|
|
|
/*
|
|
* Standard PS/2 Mouse
|
|
*/
|
|
input_report_key(dev, BTN_LEFT, packet[0] & 1);
|
|
input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
|
|
input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
|
|
|
|
rel_x = packet[1] ? (int)packet[1] - (int)((packet[0] << 4) & 0x100) : 0;
|
|
rel_y = packet[2] ? (int)((packet[0] << 3) & 0x100) - (int)packet[2] : 0;
|
|
|
|
input_report_rel(dev, REL_X, rel_x);
|
|
input_report_rel(dev, REL_Y, rel_y);
|
|
break;
|
|
}
|
|
|
|
input_sync(dev);
|
|
|
|
return PSMOUSE_FULL_PACKET;
|
|
}
|
|
|
|
static int fsp_activate_protocol(struct psmouse *psmouse)
|
|
{
|
|
struct fsp_data *pad = psmouse->private;
|
|
struct ps2dev *ps2dev = &psmouse->ps2dev;
|
|
unsigned char param[2];
|
|
int val;
|
|
|
|
/*
|
|
* Standard procedure to enter FSP Intellimouse mode
|
|
* (scrolling wheel, 4th and 5th buttons)
|
|
*/
|
|
param[0] = 200;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
param[0] = 200;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
param[0] = 80;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
|
|
if (param[0] != 0x04) {
|
|
psmouse_err(psmouse,
|
|
"Unable to enable 4 bytes packet format.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (pad->ver < FSP_VER_STL3888_C0) {
|
|
/* Preparing relative coordinates output for older hardware */
|
|
if (fsp_reg_read(psmouse, FSP_REG_SYSCTL5, &val)) {
|
|
psmouse_err(psmouse,
|
|
"Unable to read SYSCTL5 register.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (fsp_get_buttons(psmouse, &pad->buttons)) {
|
|
psmouse_err(psmouse,
|
|
"Unable to retrieve number of buttons.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
val &= ~(FSP_BIT_EN_MSID7 | FSP_BIT_EN_MSID8 | FSP_BIT_EN_AUTO_MSID8);
|
|
/* Ensure we are not in absolute mode */
|
|
val &= ~FSP_BIT_EN_PKT_G0;
|
|
if (pad->buttons == 0x06) {
|
|
/* Left/Middle/Right & Scroll Up/Down/Right/Left */
|
|
val |= FSP_BIT_EN_MSID6;
|
|
}
|
|
|
|
if (fsp_reg_write(psmouse, FSP_REG_SYSCTL5, val)) {
|
|
psmouse_err(psmouse,
|
|
"Unable to set up required mode bits.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/*
|
|
* Enable OPC tags such that driver can tell the difference
|
|
* between on-pad and real button click
|
|
*/
|
|
if (fsp_opc_tag_enable(psmouse, true))
|
|
psmouse_warn(psmouse,
|
|
"Failed to enable OPC tag mode.\n");
|
|
/* enable on-pad click by default */
|
|
pad->flags |= FSPDRV_FLAG_EN_OPC;
|
|
|
|
/* Enable on-pad vertical and horizontal scrolling */
|
|
fsp_onpad_vscr(psmouse, true);
|
|
fsp_onpad_hscr(psmouse, true);
|
|
} else {
|
|
/* Enable absolute coordinates output for Cx/Dx hardware */
|
|
if (fsp_reg_write(psmouse, FSP_REG_SWC1,
|
|
FSP_BIT_SWC1_EN_ABS_1F |
|
|
FSP_BIT_SWC1_EN_ABS_2F |
|
|
FSP_BIT_SWC1_EN_FUP_OUT |
|
|
FSP_BIT_SWC1_EN_ABS_CON)) {
|
|
psmouse_err(psmouse,
|
|
"Unable to enable absolute coordinates output.\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsp_set_input_params(struct psmouse *psmouse)
|
|
{
|
|
struct input_dev *dev = psmouse->dev;
|
|
struct fsp_data *pad = psmouse->private;
|
|
|
|
if (pad->ver < FSP_VER_STL3888_C0) {
|
|
__set_bit(BTN_MIDDLE, dev->keybit);
|
|
__set_bit(BTN_BACK, dev->keybit);
|
|
__set_bit(BTN_FORWARD, dev->keybit);
|
|
__set_bit(REL_WHEEL, dev->relbit);
|
|
__set_bit(REL_HWHEEL, dev->relbit);
|
|
} else {
|
|
/*
|
|
* Hardware prior to Cx performs much better in relative mode;
|
|
* hence, only enable absolute coordinates output as well as
|
|
* multi-touch output for the newer hardware.
|
|
*
|
|
* Maximum coordinates can be computed as:
|
|
*
|
|
* number of scanlines * 64 - 57
|
|
*
|
|
* where number of X/Y scanline lines are 16/12.
|
|
*/
|
|
int abs_x = 967, abs_y = 711;
|
|
|
|
__set_bit(EV_ABS, dev->evbit);
|
|
__clear_bit(EV_REL, dev->evbit);
|
|
__set_bit(BTN_TOUCH, dev->keybit);
|
|
__set_bit(BTN_TOOL_FINGER, dev->keybit);
|
|
__set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
|
|
__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
|
|
|
|
input_set_abs_params(dev, ABS_X, 0, abs_x, 0, 0);
|
|
input_set_abs_params(dev, ABS_Y, 0, abs_y, 0, 0);
|
|
input_mt_init_slots(dev, 2, 0);
|
|
input_set_abs_params(dev, ABS_MT_POSITION_X, 0, abs_x, 0, 0);
|
|
input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, abs_y, 0, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fsp_detect(struct psmouse *psmouse, bool set_properties)
|
|
{
|
|
int id;
|
|
|
|
if (fsp_reg_read(psmouse, FSP_REG_DEVICE_ID, &id))
|
|
return -EIO;
|
|
|
|
if (id != 0x01)
|
|
return -ENODEV;
|
|
|
|
if (set_properties) {
|
|
psmouse->vendor = "Sentelic";
|
|
psmouse->name = "FingerSensingPad";
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fsp_reset(struct psmouse *psmouse)
|
|
{
|
|
fsp_opc_tag_enable(psmouse, false);
|
|
fsp_onpad_vscr(psmouse, false);
|
|
fsp_onpad_hscr(psmouse, false);
|
|
}
|
|
|
|
static void fsp_disconnect(struct psmouse *psmouse)
|
|
{
|
|
sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
|
|
&fsp_attribute_group);
|
|
|
|
fsp_reset(psmouse);
|
|
kfree(psmouse->private);
|
|
}
|
|
|
|
static int fsp_reconnect(struct psmouse *psmouse)
|
|
{
|
|
int version;
|
|
|
|
if (fsp_detect(psmouse, 0))
|
|
return -ENODEV;
|
|
|
|
if (fsp_get_version(psmouse, &version))
|
|
return -ENODEV;
|
|
|
|
if (fsp_activate_protocol(psmouse))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fsp_init(struct psmouse *psmouse)
|
|
{
|
|
struct fsp_data *priv;
|
|
int ver, rev, sn = 0;
|
|
int error;
|
|
|
|
if (fsp_get_version(psmouse, &ver) ||
|
|
fsp_get_revision(psmouse, &rev)) {
|
|
return -ENODEV;
|
|
}
|
|
if (ver >= FSP_VER_STL3888_C0) {
|
|
/* firmware information is only available since C0 */
|
|
fsp_get_sn(psmouse, &sn);
|
|
}
|
|
|
|
psmouse_info(psmouse,
|
|
"Finger Sensing Pad, hw: %d.%d.%d, sn: %x, sw: %s\n",
|
|
ver >> 4, ver & 0x0F, rev, sn, fsp_drv_ver);
|
|
|
|
psmouse->private = priv = kzalloc(sizeof(struct fsp_data), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->ver = ver;
|
|
priv->rev = rev;
|
|
|
|
psmouse->protocol_handler = fsp_process_byte;
|
|
psmouse->disconnect = fsp_disconnect;
|
|
psmouse->reconnect = fsp_reconnect;
|
|
psmouse->cleanup = fsp_reset;
|
|
psmouse->pktsize = 4;
|
|
|
|
error = fsp_activate_protocol(psmouse);
|
|
if (error)
|
|
goto err_out;
|
|
|
|
/* Set up various supported input event bits */
|
|
error = fsp_set_input_params(psmouse);
|
|
if (error)
|
|
goto err_out;
|
|
|
|
error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
|
|
&fsp_attribute_group);
|
|
if (error) {
|
|
psmouse_err(psmouse,
|
|
"Failed to create sysfs attributes (%d)", error);
|
|
goto err_out;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_out:
|
|
kfree(psmouse->private);
|
|
psmouse->private = NULL;
|
|
return error;
|
|
}
|