> This driver, submitted on behalf of Cypress Semiconductor Corporation and additional contributors, provides support for the Cypress PS/2 Trackpad. > > Note that this patch "increase struct ps2dev cmdbuf[] to 8 bytes": > http://www.spinics.net/lists/linux-input/msg24095.html > ... is a PREREQUISITE for this driver. > > This [PATCH v7] version differs from my previous submitted version[5]: > > Changes as recommended by Henrik Rydberg and Dudley Du: > > - cypress_get_finger_count() returns -1 to indicate invalid packet > (Dudley, this is a variation on your "return 6" proposal -- OK?). It's okay, This value can distinguish 0 package and any other valid packages clearly. Thanks. > > - cleaned up return syntax in cypress_get_finger_count(). > > Known problems: None. > > -Kamal Mostafa <kamal@xxxxxxxxxxxxx> > > [0] PATCH v1: http://www.spinics.net/lists/linux-input/msg23690.html > [1] PATCH v2: http://www.spinics.net/lists/linux-input/msg23718.html > [2] PATCH v3: http://www.spinics.net/lists/linux-input/msg23943.html > [3] PATCH v4: http://www.spinics.net/lists/linux-input/msg24047.html > [4] PATCH v5: http://www.spinics.net/lists/linux-input/msg24096.html > [5] PATCH v6: http://www.spinics.net/lists/linux-input/msg24121.html > > -- >8 -- > From: Dudley Du <dudl@xxxxxxxxxxx> > Subject: [PATCH v7] input: Cypress PS/2 Trackpad psmouse driver > > Input/mouse driver for Cypress PS/2 Trackpad. > > Original code contributed by Dudley Du (Cypress Semiconductor Corporation), modified by Kamal Mostafa and Kyle Fazzari. > > BugLink: http://launchpad.net/bugs/978807 > > Signed-off-by: Dudley Du <dudl@xxxxxxxxxxx> > Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx> > Signed-off-by: Kyle Fazzari <git@xxxxxxxxxxxxxxxxx> > Signed-off-by: Mario Limonciello <mario_limonciello@xxxxxxxx> > Signed-off-by: Tim Gardner <tim.gardner@xxxxxxxxxxxxx> > Acked-by: Herton Krzesinski <herton.krzesinski@xxxxxxxxxxxxx> > Reviewed-by: Henrik Rydberg <rydberg@xxxxxxxxxxx> > Reviewed-by: Dudley Du <dudl@xxxxxxxxxxx> > --- > drivers/input/mouse/Kconfig | 10 + > drivers/input/mouse/Makefile | 1 + > drivers/input/mouse/cypress_ps2.c | 722 ++++++++++++++++++++++++++++++++++++ > drivers/input/mouse/cypress_ps2.h | 191 ++++++++++ > drivers/input/mouse/psmouse-base.c | 32 ++ > drivers/input/mouse/psmouse.h | 1 + > 6 files changed, 957 insertions(+) > create mode 100644 drivers/input/mouse/cypress_ps2.c create mode 100644 drivers/input/mouse/cypress_ps2.h > > diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig index cd6268c..88954dd 100644 > --- a/drivers/input/mouse/Kconfig > +++ b/drivers/input/mouse/Kconfig > @@ -68,6 +68,16 @@ config MOUSE_PS2_SYNAPTICS > > If unsure, say Y. > > +config MOUSE_PS2_CYPRESS > + bool "Cypress PS/2 mouse protocol extension" if EXPERT > + default y > + depends on MOUSE_PS2 > + help > + Say Y here if you have a Cypress PS/2 Trackpad connected to > + your system. > + > + If unsure, say Y. > + > config MOUSE_PS2_LIFEBOOK > bool "Fujitsu Lifebook PS/2 mouse protocol extension" if EXPERT > default y > diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile index 46ba755..323e352 100644 > --- a/drivers/input/mouse/Makefile > +++ b/drivers/input/mouse/Makefile > @@ -32,3 +32,4 @@ psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o > psmouse-$(CONFIG_MOUSE_PS2_SENTELIC) += sentelic.o > psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT) += trackpoint.o > psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT) += touchkit_ps2.o > +psmouse-$(CONFIG_MOUSE_PS2_CYPRESS) += cypress_ps2.o > diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c > new file mode 100644 > index 0000000..64ffad5 > --- /dev/null > +++ b/drivers/input/mouse/cypress_ps2.c > @@ -0,0 +1,722 @@ > +/* > + * Cypress Trackpad PS/2 mouse driver > + * > + * Copyright (c) 2012 Cypress Semiconductor Corporation. > + * > + * Author: > + * Dudley Du <dudl@xxxxxxxxxxx> > + * > + * Additional contributors include: > + * Kamal Mostafa <kamal@xxxxxxxxxxxxx> > + * Kyle Fazzari <git@xxxxxxxxxxxxxxxxx> > + * > + * This program is free software; you can redistribute it and/or modify > +it > + * under the terms of the GNU General Public License version 2 as > +published by > + * the Free Software Foundation. > + */ > + > +#include <linux/init.h> > +#include <linux/module.h> > +#include <linux/kernel.h> > +#include <linux/slab.h> > +#include <linux/serio.h> > +#include <linux/libps2.h> > +#include <linux/input.h> > +#include <linux/input/mt.h> > +#include <linux/sched.h> > +#include <linux/wait.h> > + > +#include "cypress_ps2.h" > + > +#undef CYTP_DEBUG_VERBOSE /* define this and DEBUG for more verbose > +dump */ > + > +static void cypress_set_packet_size(struct psmouse *psmouse, unsigned > +int n) { > + struct cytp_data *cytp = psmouse->private; > + cytp->pkt_size = n; > +} > + > +static const unsigned char cytp_rate[] = {10, 20, 40, 60, 100, 200}; > +static const unsigned char cytp_resolution[] = {0x00, 0x01, 0x02, > +0x03}; > + > +static int cypress_ps2_sendbyte(struct psmouse *psmouse, int value) { > + struct ps2dev *ps2dev = &psmouse->ps2dev; > + > + if (ps2_sendbyte(ps2dev, value & 0xff, CYTP_CMD_TIMEOUT) < 0) { > + psmouse_dbg(psmouse, > + "send command 0x%02x failed, resp 0x%02x\n", > + value & 0xff, ps2dev->nak); > + if (ps2dev->nak == CYTP_PS2_RETRY) > + return CYTP_PS2_RETRY; > + else > + return CYTP_PS2_ERROR; > + } > + > +#ifdef CYTP_DEBUG_VERBOSE > + psmouse_dbg(psmouse, "send command 0x%02x success, resp 0xfa\n", > + value & 0xff); > +#endif > + > + return 0; > +} > + > +static int cypress_ps2_ext_cmd(struct psmouse *psmouse, unsigned short cmd, > + unsigned char data) > +{ > + struct ps2dev *ps2dev = &psmouse->ps2dev; > + int tries = CYTP_PS2_CMD_TRIES; > + int rc; > + > + ps2_begin_command(ps2dev); > + > + do { > + /* > + * Send extension command byte (0xE8 or 0xF3). > + * If sending the command fails, send recovery command > + * to make the device return to the ready state. > + */ > + rc = cypress_ps2_sendbyte(psmouse, cmd & 0xff); > + if (rc == CYTP_PS2_RETRY) { > + rc = cypress_ps2_sendbyte(psmouse, 0x00); > + if (rc == CYTP_PS2_RETRY) > + rc = cypress_ps2_sendbyte(psmouse, 0x0a); > + } > + if (rc == CYTP_PS2_ERROR) > + continue; > + > + rc = cypress_ps2_sendbyte(psmouse, data); > + if (rc == CYTP_PS2_RETRY) > + rc = cypress_ps2_sendbyte(psmouse, data); > + if (rc == CYTP_PS2_ERROR) > + continue; > + else > + break; > + } while (--tries > 0); > + > + ps2_end_command(ps2dev); > + > + return rc; > +} > + > +static int cypress_ps2_read_cmd_status(struct psmouse *psmouse, > + unsigned char cmd, > + unsigned char *param) > +{ > + int rc; > + struct ps2dev *ps2dev = &psmouse->ps2dev; > + enum psmouse_state old_state; > + int pktsize; > + > + ps2_begin_command(&psmouse->ps2dev); > + > + old_state = psmouse->state; > + psmouse->state = PSMOUSE_CMD_MODE; > + psmouse->pktcnt = 0; > + > + pktsize = (cmd == CYTP_CMD_READ_TP_METRICS) ? 8 : 3; > + memset(param, 0, pktsize); > + > + rc = cypress_ps2_sendbyte(psmouse, 0xe9); > + if (rc < 0) > + goto out; > + > + wait_event_timeout(ps2dev->wait, > + (psmouse->pktcnt >= pktsize), > + msecs_to_jiffies(CYTP_CMD_TIMEOUT)); > + > + memcpy(param, psmouse->packet, pktsize); > + > + psmouse_dbg(psmouse, "Command 0x%02x response data (0x): %*ph\n", > + cmd, pktsize, param); > + > +out: > + psmouse->state = old_state; > + psmouse->pktcnt = 0; > + > + ps2_end_command(&psmouse->ps2dev); > + > + return rc; > +} > + > +static int cypress_verify_cmd_state(struct psmouse *psmouse, > + unsigned char cmd, unsigned char *param) { > + bool rate_match = 0; > + bool resolution_match = 0; > + int i; > + > + /* callers will do further checking. */ > + if (cmd == CYTP_CMD_READ_CYPRESS_ID || > + cmd == CYTP_CMD_STANDARD_MODE || > + cmd == CYTP_CMD_READ_TP_METRICS) > + return 0; > + if ((~param[0] & DFLT_RESP_BITS_VALID) == DFLT_RESP_BITS_VALID && > + (param[0] & DFLT_RESP_BIT_MODE) == DFLT_RESP_STREAM_MODE) { > + for (i = 0; i < sizeof(cytp_resolution); i++) > + if (cytp_resolution[i] == param[1]) > + resolution_match = 1; > + > + for (i = 0; i < sizeof(cytp_rate); i++) > + if (cytp_rate[i] == param[2]) > + rate_match = 1; > + > + if (resolution_match && rate_match) > + return 0; > + } > + > + psmouse_dbg(psmouse, "verify cmd state failed.\n"); > + return -1; > +} > + > +static int cypress_send_ext_cmd(struct psmouse *psmouse, unsigned char cmd, > + unsigned char *param) > +{ > + int tries = CYTP_PS2_CMD_TRIES; > + int rc; > + > + psmouse_dbg(psmouse, "send extension cmd 0x%02x, [%d %d %d %d]\n", > + cmd, DECODE_CMD_AA(cmd), DECODE_CMD_BB(cmd), > + DECODE_CMD_CC(cmd), DECODE_CMD_DD(cmd)); > + do { > + cypress_ps2_ext_cmd(psmouse, > + PSMOUSE_CMD_SETRES, DECODE_CMD_DD(cmd)); > + cypress_ps2_ext_cmd(psmouse, > + PSMOUSE_CMD_SETRES, DECODE_CMD_CC(cmd)); > + cypress_ps2_ext_cmd(psmouse, > + PSMOUSE_CMD_SETRES, DECODE_CMD_BB(cmd)); > + cypress_ps2_ext_cmd(psmouse, > + PSMOUSE_CMD_SETRES, DECODE_CMD_AA(cmd)); > + > + rc = cypress_ps2_read_cmd_status(psmouse, cmd, param); > + if (rc) > + continue; > + > + rc = cypress_verify_cmd_state(psmouse, cmd, param); > + if (rc == 0) > + return 0; > + } while (--tries > 0); > + > + return -1; > +} > + > +int cypress_detect(struct psmouse *psmouse, bool set_properties) { > + unsigned char param[3]; > + > + if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_CYPRESS_ID, param)) > + return -ENODEV; > + > + /* Check for Cypress Trackpad signature bytes: 0x33 0xCC */ > + if (param[0] != 0x33 || param[1] != 0xCC) > + return -ENODEV; > + > + if (set_properties) { > + psmouse->vendor = "Cypress"; > + psmouse->name = "Trackpad"; > + } > + > + return 0; > +} > + > +static int cypress_read_fw_version(struct psmouse *psmouse) { > + struct cytp_data *cytp = psmouse->private; > + unsigned char param[3]; > + > + if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_CYPRESS_ID, param)) > + return -ENODEV; > + > + /* Check for Cypress Trackpad signature bytes: 0x33 0xCC */ > + if (param[0] != 0x33 || param[1] != 0xCC) > + return -ENODEV; > + > + cytp->fw_version = param[2] & FW_VERSION_MASX; > + cytp->tp_metrics_supported = (param[2] & TP_METRICS_MASK) ? 1 : 0; > + > + psmouse_dbg(psmouse, "cytp->fw_version = %d\n", cytp->fw_version); > + psmouse_dbg(psmouse, "cytp->tp_metrics_supported = %d\n", > + cytp->tp_metrics_supported); > + return 0; > +} > + > +static int cypress_read_tp_metrics(struct psmouse *psmouse) { > + struct cytp_data *cytp = psmouse->private; > + unsigned char param[8]; > + > + /* set default values for tp metrics. */ > + cytp->tp_width = CYTP_DEFAULT_WIDTH; > + cytp->tp_high = CYTP_DEFAULT_HIGH; > + cytp->tp_max_abs_x = CYTP_ABS_MAX_X; > + cytp->tp_max_abs_y = CYTP_ABS_MAX_Y; > + cytp->tp_min_pressure = CYTP_MIN_PRESSURE; > + cytp->tp_max_pressure = CYTP_MAX_PRESSURE; > + cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width; > + cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high; > + > + memset(param, 0, sizeof(param)); > + if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_TP_METRICS, param) == 0) { > + /* Update trackpad parameters. */ > + cytp->tp_max_abs_x = (param[1] << 8) | param[0]; > + cytp->tp_max_abs_y = (param[3] << 8) | param[2]; > + cytp->tp_min_pressure = param[4]; > + cytp->tp_max_pressure = param[5]; > + } > + > + if (!cytp->tp_max_pressure || > + cytp->tp_max_pressure < cytp->tp_min_pressure || > + !cytp->tp_width || !cytp->tp_high || > + !cytp->tp_max_abs_x || > + cytp->tp_max_abs_x < cytp->tp_width || > + !cytp->tp_max_abs_y || > + cytp->tp_max_abs_y < cytp->tp_high) > + return -1; > + > + cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width; > + cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high; > + > +#ifdef CYTP_DEBUG_VERBOSE > + psmouse_dbg(psmouse, "Dump trackpad hardware configuration as below:\n"); > + psmouse_dbg(psmouse, "cytp->tp_width = %d\n", cytp->tp_width); > + psmouse_dbg(psmouse, "cytp->tp_high = %d\n", cytp->tp_high); > + psmouse_dbg(psmouse, "cytp->tp_max_abs_x = %d\n", cytp->tp_max_abs_x); > + psmouse_dbg(psmouse, "cytp->tp_max_abs_y = %d\n", cytp->tp_max_abs_y); > + psmouse_dbg(psmouse, "cytp->tp_min_pressure = %d\n", cytp->tp_min_pressure); > + psmouse_dbg(psmouse, "cytp->tp_max_pressure = %d\n", cytp->tp_max_pressure); > + psmouse_dbg(psmouse, "cytp->tp_res_x = %d\n", cytp->tp_res_x); > + psmouse_dbg(psmouse, "cytp->tp_res_y = %d\n", cytp->tp_res_y); > + > + psmouse_dbg(psmouse, "tp_type_APA = %d\n", > + (param[6] & TP_METRICS_BIT_APA) ? 1 : 0); > + psmouse_dbg(psmouse, "tp_type_MTG = %d\n", > + (param[6] & TP_METRICS_BIT_MTG) ? 1 : 0); > + psmouse_dbg(psmouse, "tp_palm = %d\n", > + (param[6] & TP_METRICS_BIT_PALM) ? 1 : 0); > + psmouse_dbg(psmouse, "tp_stubborn = %d\n", > + (param[6] & TP_METRICS_BIT_STUBBORN) ? 1 : 0); > + psmouse_dbg(psmouse, "tp_1f_jitter = %d\n", > + (param[6] & TP_METRICS_BIT_1F_JITTER) >> 2); > + psmouse_dbg(psmouse, "tp_2f_jitter = %d\n", > + (param[6] & TP_METRICS_BIT_2F_JITTER) >> 4); > + psmouse_dbg(psmouse, "tp_1f_spike = %d\n", > + param[7] & TP_METRICS_BIT_1F_SPIKE); > + psmouse_dbg(psmouse, "tp_2f_spike = %d\n", > + (param[7] & TP_METRICS_BIT_2F_SPIKE) >> 2); > + psmouse_dbg(psmouse, "tp_abs_packet_format_set = %d\n", > + (param[7] & TP_METRICS_BIT_ABS_PKT_FORMAT_SET) >> 4); #endif > + > + return 0; > +} > + > +static int cypress_query_hardware(struct psmouse *psmouse) { > + struct cytp_data *cytp = psmouse->private; > + int ret; > + > + ret = cypress_read_fw_version(psmouse); > + if (ret) > + return ret; > + > + if (cytp->tp_metrics_supported) { > + ret = cypress_read_tp_metrics(psmouse); > + if (ret) > + return ret; > + } > + > + return 0; > +} > + > +static int cypress_set_absolute_mode(struct psmouse *psmouse) { > + struct cytp_data *cytp = psmouse->private; > + unsigned char param[3]; > + > + if (cypress_send_ext_cmd(psmouse, CYTP_CMD_ABS_WITH_PRESSURE_MODE, param) < 0) > + return -1; > + > + cytp->mode = (cytp->mode & ~CYTP_BIT_ABS_REL_MASK) > + | CYTP_BIT_ABS_PRESSURE; > + cypress_set_packet_size(psmouse, 5); > + > + return 0; > +} > + > +/* > + * Reset trackpad device. > + * This is also the default mode when trackpad powered on. > + */ > +static void cypress_reset(struct psmouse *psmouse) { > + struct cytp_data *cytp = psmouse->private; > + > + cytp->mode = 0; > + > + psmouse_reset(psmouse); > +} > + > +static int cypress_set_input_params(struct input_dev *input, > + struct cytp_data *cytp) > +{ > + int ret; > + > + if (!cytp->tp_res_x || !cytp->tp_res_y) > + return -EINVAL; > + > + __set_bit(EV_ABS, input->evbit); > + input_set_abs_params(input, ABS_X, 0, cytp->tp_max_abs_x, 0, 0); > + input_set_abs_params(input, ABS_Y, 0, cytp->tp_max_abs_y, 0, 0); > + input_set_abs_params(input, ABS_PRESSURE, > + cytp->tp_min_pressure, cytp->tp_max_pressure, 0, 0); > + input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 255, 0, 0); > + > + /* finger position */ > + input_set_abs_params(input, ABS_MT_POSITION_X, 0, cytp->tp_max_abs_x, 0, 0); > + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, cytp->tp_max_abs_y, 0, 0); > + input_set_abs_params(input, ABS_MT_PRESSURE, 0, 255, 0, 0); > + > + ret = input_mt_init_slots(input, CYTP_MAX_MT_SLOTS, > + INPUT_MT_DROP_UNUSED|INPUT_MT_TRACK); > + if (ret < 0) > + return ret; > + > + __set_bit(INPUT_PROP_SEMI_MT, input->propbit); > + > + input_abs_set_res(input, ABS_X, cytp->tp_res_x); > + input_abs_set_res(input, ABS_Y, cytp->tp_res_y); > + > + input_abs_set_res(input, ABS_MT_POSITION_X, cytp->tp_res_x); > + input_abs_set_res(input, ABS_MT_POSITION_Y, cytp->tp_res_y); > + > + __set_bit(BTN_TOUCH, input->keybit); > + __set_bit(BTN_TOOL_FINGER, input->keybit); > + __set_bit(BTN_TOOL_DOUBLETAP, input->keybit); > + __set_bit(BTN_TOOL_TRIPLETAP, input->keybit); > + __set_bit(BTN_TOOL_QUADTAP, input->keybit); > + __set_bit(BTN_TOOL_QUINTTAP, input->keybit); > + > + __clear_bit(EV_REL, input->evbit); > + __clear_bit(REL_X, input->relbit); > + __clear_bit(REL_Y, input->relbit); > + > + __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); > + __set_bit(EV_KEY, input->evbit); > + __set_bit(BTN_LEFT, input->keybit); > + __set_bit(BTN_RIGHT, input->keybit); > + __set_bit(BTN_MIDDLE, input->keybit); > + > + input_set_drvdata(input, cytp); > + > + return 0; > +} > + > +static int cypress_get_finger_count(unsigned char header_byte) { > + unsigned char bits6_7; > + int finger_count; > + > + bits6_7 = header_byte >> 6; > + finger_count = bits6_7 & 0x03; > + > + if (finger_count == 1) > + return 1; > + > + if (header_byte & ABS_HSCROLL_BIT) { > + /* HSCROLL gets added on to 0 finger count. */ > + switch (finger_count) { > + case 0: return 4; > + case 2: return 5; > + default: > + /* Invalid contact (e.g. palm). Ignore it. */ > + return -1; > + } > + } > + > + return finger_count; > +} > + > + > +static int cypress_parse_packet(struct psmouse *psmouse, > + struct cytp_data *cytp, struct cytp_report_data *report_data) { > + unsigned char *packet = psmouse->packet; > + unsigned char header_byte = packet[0]; > + int contact_cnt; > + > + memset(report_data, 0, sizeof(struct cytp_report_data)); > + > + contact_cnt = cypress_get_finger_count(header_byte); > + > + if (contact_cnt < 0) /* e.g. palm detect */ > + return -EINVAL; > + > + report_data->contact_cnt = contact_cnt; > + > + report_data->tap = (header_byte & ABS_MULTIFINGER_TAP) ? 1 : 0; > + > + if (report_data->contact_cnt == 1) { > + report_data->contacts[0].x = > + ((packet[1] & 0x70) << 4) | packet[2]; > + report_data->contacts[0].y = > + ((packet[1] & 0x07) << 8) | packet[3]; > + if (cytp->mode & CYTP_BIT_ABS_PRESSURE) > + report_data->contacts[0].z = packet[4]; > + > + } else if (report_data->contact_cnt >= 2) { > + report_data->contacts[0].x = > + ((packet[1] & 0x70) << 4) | packet[2]; > + report_data->contacts[0].y = > + ((packet[1] & 0x07) << 8) | packet[3]; > + if (cytp->mode & CYTP_BIT_ABS_PRESSURE) > + report_data->contacts[0].z = packet[4]; > + > + report_data->contacts[1].x = > + ((packet[5] & 0xf0) << 4) | packet[6]; > + report_data->contacts[1].y = > + ((packet[5] & 0x0f) << 8) | packet[7]; > + if (cytp->mode & CYTP_BIT_ABS_PRESSURE) > + report_data->contacts[1].z = report_data->contacts[0].z; > + } > + > + report_data->left = (header_byte & BTN_LEFT_BIT) ? 1 : 0; > + report_data->right = (header_byte & BTN_RIGHT_BIT) ? 1 : 0; > + > + /* > + * This is only true if one of the mouse buttons were tapped. Make > + * sure it doesn't turn into a click. The regular tap-to-click > + * functionality will handle that on its own. If we don't do this, > + * disabling tap-to-click won't affect the mouse button zones. > + */ > + if (report_data->tap) > + report_data->left = 0; > + > +#ifdef CYTP_DEBUG_VERBOSE > + { > + int i; > + int n = report_data->contact_cnt; > + psmouse_dbg(psmouse, "Dump parsed report data as below:\n"); > + psmouse_dbg(psmouse, "contact_cnt = %d\n", > + report_data->contact_cnt); > + if (n > CYTP_MAX_MT_SLOTS) > + n = CYTP_MAX_MT_SLOTS; > + for (i = 0; i < n; i++) > + psmouse_dbg(psmouse, "contacts[%d] = {%d, %d, %d}\n", i, > + report_data->contacts[i].x, > + report_data->contacts[i].y, > + report_data->contacts[i].z); > + psmouse_dbg(psmouse, "left = %d\n", report_data->left); > + psmouse_dbg(psmouse, "right = %d\n", report_data->right); > + psmouse_dbg(psmouse, "middle = %d\n", report_data->middle); > + } > +#endif > + > + return 0; > +} > + > +static void cypress_process_packet(struct psmouse *psmouse, bool > +zero_pkt) { > + int i; > + struct input_dev *input = psmouse->dev; > + struct cytp_data *cytp = psmouse->private; > + struct cytp_report_data report_data; > + struct cytp_contact *contact; > + struct input_mt_pos pos[CYTP_MAX_MT_SLOTS]; > + int slots[CYTP_MAX_MT_SLOTS]; > + int n; > + > + if (cypress_parse_packet(psmouse, cytp, &report_data)) > + return; > + > + n = report_data.contact_cnt; > + > + if (n > CYTP_MAX_MT_SLOTS) > + n = CYTP_MAX_MT_SLOTS; > + > + for (i = 0; i < n; i++) { > + contact = &report_data.contacts[i]; > + pos[i].x = contact->x; > + pos[i].y = contact->y; > + } > + > + input_mt_assign_slots(input, slots, pos, n); > + > + for (i = 0; i < n; i++) { > + contact = &report_data.contacts[i]; > + input_mt_slot(input, slots[i]); > + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); > + input_report_abs(input, ABS_MT_POSITION_X, contact->x); > + input_report_abs(input, ABS_MT_POSITION_Y, contact->y); > + input_report_abs(input, ABS_MT_PRESSURE, contact->z); > + } > + > + input_mt_sync_frame(input); > + > + input_mt_report_finger_count(input, report_data.contact_cnt); > + > + input_report_key(input, BTN_LEFT, report_data.left); > + input_report_key(input, BTN_RIGHT, report_data.right); > + input_report_key(input, BTN_MIDDLE, report_data.middle); > + > + input_sync(input); > +} > + > +static psmouse_ret_t cypress_validate_byte(struct psmouse *psmouse) { > + int contact_cnt; > + int index = psmouse->pktcnt - 1; > + unsigned char *packet = psmouse->packet; > + struct cytp_data *cytp = psmouse->private; > + > + if (index < 0 || index > cytp->pkt_size) > + return PSMOUSE_BAD_DATA; > + > + if (index == 0 && (packet[0] & 0xfc) == 0) { > + /* call packet process for reporting finger leave. */ > + cypress_process_packet(psmouse, 1); > + return PSMOUSE_FULL_PACKET; > + } > + > + /* > + * Perform validation (and adjust packet size) based only on the > + * first byte; allow all further bytes through. > + */ > + if (index != 0) > + return PSMOUSE_GOOD_DATA; > + > + /* > + * If absolute/relative mode bit has not been set yet, just pass > + * the byte through. > + */ > + if ((cytp->mode & CYTP_BIT_ABS_REL_MASK) == 0) > + return PSMOUSE_GOOD_DATA; > + > + if ((packet[0] & 0x08) == 0x08) > + return PSMOUSE_BAD_DATA; > + > + contact_cnt = cypress_get_finger_count(packet[0]); > + > + if (contact_cnt < 0) > + return PSMOUSE_BAD_DATA; > + > + if (cytp->mode & CYTP_BIT_ABS_NO_PRESSURE) > + cypress_set_packet_size(psmouse, contact_cnt == 2 ? 7 : 4); > + else > + cypress_set_packet_size(psmouse, contact_cnt == 2 ? 8 : 5); > + > + return PSMOUSE_GOOD_DATA; > +} > + > +static psmouse_ret_t cypress_protocol_handler(struct psmouse *psmouse) > +{ > + struct cytp_data *cytp = psmouse->private; > + > + if (psmouse->pktcnt >= cytp->pkt_size) { > + cypress_process_packet(psmouse, 0); > + return PSMOUSE_FULL_PACKET; > + } > + > + return cypress_validate_byte(psmouse); } > + > +static void cypress_set_rate(struct psmouse *psmouse, unsigned int > +rate) { > + struct cytp_data *cytp = psmouse->private; > + > + if (rate >= 80) { > + psmouse->rate = 80; > + cytp->mode |= CYTP_BIT_HIGH_RATE; > + } else { > + psmouse->rate = 40; > + cytp->mode &= ~CYTP_BIT_HIGH_RATE; > + } > + > + ps2_command(&psmouse->ps2dev, (unsigned char *)&psmouse->rate, > + PSMOUSE_CMD_SETRATE); > +} > + > +static void cypress_disconnect(struct psmouse *psmouse) { > + cypress_reset(psmouse); > + kfree(psmouse->private); > + psmouse->private = NULL; > +} > + > +static int cypress_reconnect(struct psmouse *psmouse) { > + int tries = CYTP_PS2_CMD_TRIES; > + int rc; > + > + do { > + cypress_reset(psmouse); > + rc = cypress_detect(psmouse, false); > + } while (rc && (--tries > 0)); > + > + if (rc) { > + psmouse_err(psmouse, "Reconnect: unable to detect trackpad.\n"); > + return -1; > + } > + > + if (cypress_set_absolute_mode(psmouse)) { > + psmouse_err(psmouse, "Reconnect: Unable to initialize Cypress absolute mode.\n"); > + return -1; > + } > + > + return 0; > +} > + > +int cypress_init(struct psmouse *psmouse) { > + struct cytp_data *cytp; > + > + cytp = (struct cytp_data *)kzalloc(sizeof(struct cytp_data), GFP_KERNEL); > + psmouse->private = (void *)cytp; > + if (cytp == NULL) > + return -ENOMEM; > + > + cypress_reset(psmouse); > + > + psmouse->pktsize = 8; > + > + if (cypress_query_hardware(psmouse)) { > + psmouse_err(psmouse, "Unable to query Trackpad hardware.\n"); > + goto err_exit; > + } > + > + if (cypress_set_absolute_mode(psmouse)) { > + psmouse_err(psmouse, "init: Unable to initialize Cypress absolute mode.\n"); > + goto err_exit; > + } > + > + if (cypress_set_input_params(psmouse->dev, cytp) < 0) { > + psmouse_err(psmouse, "init: Unable to set input params.\n"); > + goto err_exit; > + } > + > + psmouse->model = 1; > + psmouse->protocol_handler = cypress_protocol_handler; > + psmouse->set_rate = cypress_set_rate; > + psmouse->disconnect = cypress_disconnect; > + psmouse->reconnect = cypress_reconnect; > + psmouse->cleanup = cypress_reset; > + psmouse->resync_time = 0; > + > + return 0; > + > +err_exit: > + /* > + * Reset Cypress Trackpad as a standard mouse. Then > + * let psmouse driver commmunicating with it as default PS2 mouse. > + */ > + cypress_reset(psmouse); > + > + psmouse->private = NULL; > + kfree(cytp); > + > + return -1; > +} > + > +bool cypress_supported(void) > +{ > + return true; > +} > diff --git a/drivers/input/mouse/cypress_ps2.h b/drivers/input/mouse/cypress_ps2.h > new file mode 100644 > index 0000000..4720f21 > --- /dev/null > +++ b/drivers/input/mouse/cypress_ps2.h > @@ -0,0 +1,191 @@ > +#ifndef _CYPRESS_PS2_H > +#define _CYPRESS_PS2_H > + > +#include "psmouse.h" > + > +#define CMD_BITS_MASK 0x03 > +#define COMPOSIT(x, s) (((x) & CMD_BITS_MASK) << (s)) > + > +#define ENCODE_CMD(aa, bb, cc, dd) \ > + (COMPOSIT((aa), 6) | COMPOSIT((bb), 4) | COMPOSIT((cc), 2) | COMPOSIT((dd), 0)) > +#define CYTP_CMD_ABS_NO_PRESSURE_MODE ENCODE_CMD(0, 1, 0, 0) > +#define CYTP_CMD_ABS_WITH_PRESSURE_MODE ENCODE_CMD(0, 1, 0, 1) > +#define CYTP_CMD_SMBUS_MODE ENCODE_CMD(0, 1, 1, 0) > +#define CYTP_CMD_STANDARD_MODE ENCODE_CMD(0, 2, 0, 0) /* not implemented yet. */ > +#define CYTP_CMD_CYPRESS_REL_MODE ENCODE_CMD(1, 1, 1, 1) /* not implemented yet. */ > +#define CYTP_CMD_READ_CYPRESS_ID ENCODE_CMD(0, 0, 0, 0) > +#define CYTP_CMD_READ_TP_METRICS ENCODE_CMD(0, 0, 0, 1) > +#define CYTP_CMD_SET_HSCROLL_WIDTH(w) ENCODE_CMD(1, 1, 0, (w)) > +#define CYTP_CMD_SET_HSCROLL_MASK ENCODE_CMD(1, 1, 0, 0) > +#define CYTP_CMD_SET_VSCROLL_WIDTH(w) ENCODE_CMD(1, 2, 0, (w)) > +#define CYTP_CMD_SET_VSCROLL_MASK ENCODE_CMD(1, 2, 0, 0) > +#define CYTP_CMD_SET_PALM_GEOMETRY(e) ENCODE_CMD(1, 2, 1, (e)) > +#define CYTP_CMD_PALM_GEMMETRY_MASK ENCODE_CMD(1, 2, 1, 0) > +#define CYTP_CMD_SET_PALM_SENSITIVITY(s) ENCODE_CMD(1, 2, 2, (s)) > +#define CYTP_CMD_PALM_SENSITIVITY_MASK ENCODE_CMD(1, 2, 2, 0) > +#define CYTP_CMD_SET_MOUSE_SENSITIVITY(s) ENCODE_CMD(1, 3, ((s) >> 2), (s)) > +#define CYTP_CMD_MOUSE_SENSITIVITY_MASK ENCODE_CMD(1, 3, 0, 0) > +#define CYTP_CMD_REQUEST_BASELINE_STATUS ENCODE_CMD(2, 0, 0, 1) > +#define CYTP_CMD_REQUEST_RECALIBRATION ENCODE_CMD(2, 0, 0, 3) > + > +#define DECODE_CMD_AA(x) (((x) >> 6) & CMD_BITS_MASK) #define > +DECODE_CMD_BB(x) (((x) >> 4) & CMD_BITS_MASK) #define DECODE_CMD_CC(x) > +(((x) >> 2) & CMD_BITS_MASK) #define DECODE_CMD_DD(x) ((x) & > +CMD_BITS_MASK) > + > +/* Cypress trackpad working mode. */ > +#define CYTP_BIT_ABS_PRESSURE (1 << 3) > +#define CYTP_BIT_ABS_NO_PRESSURE (1 << 2) > +#define CYTP_BIT_CYPRESS_REL (1 << 1) > +#define CYTP_BIT_STANDARD_REL (1 << 0) > +#define CYTP_BIT_REL_MASK (CYTP_BIT_CYPRESS_REL | > +CYTP_BIT_STANDARD_REL) #define CYTP_BIT_ABS_MASK (CYTP_BIT_ABS_PRESSURE > +| CYTP_BIT_ABS_NO_PRESSURE) #define CYTP_BIT_ABS_REL_MASK > +(CYTP_BIT_ABS_MASK | CYTP_BIT_REL_MASK) > + > +#define CYTP_BIT_HIGH_RATE (1 << 4) > +/* > + * report mode bit is set, firmware working in Remote Mode. > + * report mode bit is cleared, firmware working in Stream Mode. > + */ > +#define CYTP_BIT_REPORT_MODE (1 << 5) > + > +/* scrolling width values for set HSCROLL and VSCROLL width command. */ > +#define SCROLL_WIDTH_NARROW 1 #define SCROLL_WIDTH_NORMAL 2 > +#define SCROLL_WIDTH_WIDE 3 > + > +#define PALM_GEOMETRY_ENABLE 1 > +#define PALM_GEOMETRY_DISABLE 0 > + > +#define TP_METRICS_MASK 0x80 > +#define FW_VERSION_MASX 0x7f > +#define FW_VER_HIGH_MASK 0x70 > +#define FW_VER_LOW_MASK 0x0f > + > +/* Times to retry a ps2_command and millisecond delay between tries. */ > +#define CYTP_PS2_CMD_TRIES 3 #define CYTP_PS2_CMD_DELAY 500 > + > +/* time out for PS/2 command only in milliseconds. */ #define > +CYTP_CMD_TIMEOUT 200 #define CYTP_DATA_TIMEOUT 30 > + > +#define CYTP_EXT_CMD 0xe8 > +#define CYTP_PS2_RETRY 0xfe > +#define CYTP_PS2_ERROR 0xfc > + > +#define CYTP_RESP_RETRY 0x01 > +#define CYTP_RESP_ERROR 0xfe > + > + > +#define CYTP_105001_WIDTH 97 /* Dell XPS 13 */ > +#define CYTP_105001_HIGH 59 > +#define CYTP_DEFAULT_WIDTH (CYTP_105001_WIDTH) #define > +CYTP_DEFAULT_HIGH (CYTP_105001_HIGH) > + > +#define CYTP_ABS_MAX_X 1600 > +#define CYTP_ABS_MAX_Y 900 > +#define CYTP_MAX_PRESSURE 255 > +#define CYTP_MIN_PRESSURE 0 > + > +/* header byte bits of relative package. */ > +#define BTN_LEFT_BIT 0x01 > +#define BTN_RIGHT_BIT 0x02 > +#define BTN_MIDDLE_BIT 0x04 > +#define REL_X_SIGN_BIT 0x10 > +#define REL_Y_SIGN_BIT 0x20 > + > +/* header byte bits of absolute package. */ #define ABS_VSCROLL_BIT > +0x10 #define ABS_HSCROLL_BIT 0x20 #define ABS_MULTIFINGER_TAP 0x04 > +#define ABS_EDGE_MOTION_MASK 0x80 > + > +#define DFLT_RESP_BITS_VALID 0x88 /* SMBus bit should not be set. */ > +#define DFLT_RESP_SMBUS_BIT 0x80 > +#define DFLT_SMBUS_MODE 0x80 > +#define DFLT_PS2_MODE 0x00 > +#define DFLT_RESP_BIT_MODE 0x40 > +#define DFLT_RESP_REMOTE_MODE 0x40 > +#define DFLT_RESP_STREAM_MODE 0x00 > +#define DFLT_RESP_BIT_REPORTING 0x20 > +#define DFLT_RESP_BIT_SCALING 0x10 > + > +#define TP_METRICS_BIT_PALM 0x80 > +#define TP_METRICS_BIT_STUBBORN 0x40 > +#define TP_METRICS_BIT_2F_JITTER 0x30 > +#define TP_METRICS_BIT_1F_JITTER 0x0c > +#define TP_METRICS_BIT_APA 0x02 > +#define TP_METRICS_BIT_MTG 0x01 > +#define TP_METRICS_BIT_ABS_PKT_FORMAT_SET 0xf0 > +#define TP_METRICS_BIT_2F_SPIKE 0x0c > +#define TP_METRICS_BIT_1F_SPIKE 0x03 > + > +/* bits of first byte response of E9h-Status Request command. */ > +#define RESP_BTN_RIGHT_BIT 0x01 #define RESP_BTN_MIDDLE_BIT 0x02 > +#define RESP_BTN_LEFT_BIT 0x04 > +#define RESP_SCALING_BIT 0x10 > +#define RESP_ENABLE_BIT 0x20 > +#define RESP_REMOTE_BIT 0x40 > +#define RESP_SMBUS_BIT 0x80 > + > +#define CYTP_MAX_MT_SLOTS 2 > + > +struct cytp_contact { > + int x; > + int y; > + int z; /* also named as touch pressure. */ }; > + > +/* The structure of Cypress Trackpad event data. */ struct > +cytp_report_data { > + int contact_cnt; > + struct cytp_contact contacts[CYTP_MAX_MT_SLOTS]; > + unsigned int left:1; > + unsigned int right:1; > + unsigned int middle:1; > + unsigned int tap:1; /* multi-finger tap detected. */ }; > + > +/* The structure of Cypress Trackpad device private data. */ struct > +cytp_data { > + int fw_version; > + > + int pkt_size; > + int mode; > + > + int tp_min_pressure; > + int tp_max_pressure; > + int tp_width; /* X direction physical size in mm. */ > + int tp_high; /* Y direction physical size in mm. */ > + int tp_max_abs_x; /* Max X absolute units that can be reported. */ > + int tp_max_abs_y; /* Max Y absolute units that can be reported. */ > + > + int tp_res_x; /* X resolution in units/mm. */ > + int tp_res_y; /* Y resolution in units/mm. */ > + > + int tp_metrics_supported; > +}; > + > + > +#ifdef CONFIG_MOUSE_PS2_CYPRESS > +int cypress_detect(struct psmouse *psmouse, bool set_properties); int > +cypress_init(struct psmouse *psmouse); bool cypress_supported(void); > +#else inline int cypress_detect(struct psmouse *psmouse, bool > +set_properties) { > + return -ENOSYS; > +} > +inline int cypress_init(struct psmouse *psmouse) { > + return -ENOSYS; > +} > +inline bool cypress_supported(void) > +{ > + return 0; > +} > +#endif /* CONFIG_MOUSE_PS2_CYPRESS */ > + > +#endif /* _CYPRESS_PS2_H */ > diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c > index 22fe254..cff065f 100644 > --- a/drivers/input/mouse/psmouse-base.c > +++ b/drivers/input/mouse/psmouse-base.c > @@ -34,6 +34,7 @@ > #include "touchkit_ps2.h" > #include "elantech.h" > #include "sentelic.h" > +#include "cypress_ps2.h" > > #define DRIVER_DESC "PS/2 mouse driver" > > @@ -759,6 +760,28 @@ static int psmouse_extensions(struct psmouse *psmouse, > } > > /* > + * Try Cypress Trackpad. > + * Must try it before Finger Sensing Pad because Finger Sensing Pad > +probe > + * upsets some modules of Cypress Trackpads. > + */ > + if (max_proto > PSMOUSE_IMEX && > + cypress_detect(psmouse, set_properties) == 0) { > + if (cypress_supported()) { > + if (cypress_init(psmouse) == 0) > + return PSMOUSE_CYPRESS; > + > + /* > + * Finger Sensing Pad probe upsets some modules of > + * Cypress Trackpad, must avoid Finger Sensing Pad > + * probe if Cypress Trackpad device detected. > + */ > + return PSMOUSE_PS2; > + } > + > + max_proto = PSMOUSE_IMEX; > + } > + > +/* > * Try ALPS TouchPad > */ > if (max_proto > PSMOUSE_IMEX) { > @@ -896,6 +919,15 @@ static const struct psmouse_protocol psmouse_protocols[] = { > .alias = "thinkps", > .detect = thinking_detect, > }, > +#ifdef CONFIG_MOUSE_PS2_CYPRESS > + { > + .type = PSMOUSE_CYPRESS, > + .name = "CyPS/2", > + .alias = "cypress", > + .detect = cypress_detect, > + .init = cypress_init, > + }, > +#endif > { > .type = PSMOUSE_GENPS, > .name = "GenPS/2", > diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h index fe1df23..2f0b39d 100644 > --- a/drivers/input/mouse/psmouse.h > +++ b/drivers/input/mouse/psmouse.h > @@ -95,6 +95,7 @@ enum psmouse_type { > PSMOUSE_ELANTECH, > PSMOUSE_FSP, > PSMOUSE_SYNAPTICS_RELATIVE, > + PSMOUSE_CYPRESS, > PSMOUSE_AUTO /* This one should always be last */ > }; > > -- > 1.7.10.4 > This message and any attachments may contain Cypress (or its subsidiaries) confidential 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