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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/bitops.h>#include <linux/input.h>#include <linux/serio.h>#include <linux/libps2.h>#include <linux/types.h>#include "psmouse.h"#include "logips2pp.h"
/* Logitech mouse types */#define PS2PP_KIND_WHEEL 1#define PS2PP_KIND_MX 2#define PS2PP_KIND_TP3 3#define PS2PP_KIND_TRACKMAN 4
/* Logitech mouse features */#define PS2PP_WHEEL BIT(0)#define PS2PP_HWHEEL BIT(1)#define PS2PP_SIDE_BTN BIT(2)#define PS2PP_EXTRA_BTN BIT(3)#define PS2PP_TASK_BTN BIT(4)#define PS2PP_NAV_BTN BIT(5)
struct ps2pp_info { u8 model; u8 kind; u16 features;};
/* * Process a PS2++ or PS2T++ packet. */
static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse){ struct input_dev *dev = psmouse->dev; u8 *packet = psmouse->packet;
if (psmouse->pktcnt < 3) return PSMOUSE_GOOD_DATA;
/* * Full packet accumulated, process it */
if ((packet[0] & 0x48) == 0x48 && (packet[1] & 0x02) == 0x02) {
/* Logitech extended packet */ switch ((packet[1] >> 4) | (packet[0] & 0x30)) {
case 0x0d: /* Mouse extra info */
input_report_rel(dev, packet[2] & 0x80 ? REL_HWHEEL : REL_WHEEL, -sign_extend32(packet[2], 3)); input_report_key(dev, BTN_SIDE, packet[2] & BIT(4)); input_report_key(dev, BTN_EXTRA, packet[2] & BIT(5));
break;
case 0x0e: /* buttons 4, 5, 6, 7, 8, 9, 10 info */
input_report_key(dev, BTN_SIDE, packet[2] & BIT(0)); input_report_key(dev, BTN_EXTRA, packet[2] & BIT(1)); input_report_key(dev, BTN_TASK, packet[2] & BIT(2)); input_report_key(dev, BTN_BACK, packet[2] & BIT(3)); input_report_key(dev, BTN_FORWARD, packet[2] & BIT(4));
break;
case 0x0f: /* TouchPad extra info */
input_report_rel(dev, packet[2] & 0x08 ? REL_HWHEEL : REL_WHEEL, -sign_extend32(packet[2] >> 4, 3)); packet[0] = packet[2] | BIT(3); break;
default: psmouse_dbg(psmouse, "Received PS2++ packet #%x, but don't know how to handle.\n", (packet[1] >> 4) | (packet[0] & 0x30)); break; }
psmouse_report_standard_buttons(dev, packet[0]);
} else { /* Standard PS/2 motion data */ psmouse_report_standard_packet(dev, packet); }
input_sync(dev);
return PSMOUSE_FULL_PACKET;
}
/* * ps2pp_cmd() sends a PS2++ command, sliced into two bit * pieces through the SETRES command. This is needed to send extended * commands to mice on notebooks that try to understand the PS/2 protocol * Ugly. */
static int ps2pp_cmd(struct psmouse *psmouse, u8 *param, u8 command){ int error;
error = ps2_sliced_command(&psmouse->ps2dev, command); if (error) return error;
error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_POLL | 0x0300); if (error) return error;
return 0;}
/* * SmartScroll / CruiseControl for some newer Logitech mice Defaults to * enabled if we do nothing to it. Of course I put this in because I want it * disabled :P * 1 - enabled (if previously disabled, also default) * 0 - disabled */
static void ps2pp_set_smartscroll(struct psmouse *psmouse, bool smartscroll){ struct ps2dev *ps2dev = &psmouse->ps2dev; u8 param[4];
ps2pp_cmd(psmouse, param, 0x32);
param[0] = 0; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
param[0] = smartscroll; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);}
static ssize_t ps2pp_attr_show_smartscroll(struct psmouse *psmouse, void *data, char *buf){ return sprintf(buf, "%d\n", psmouse->smartscroll);}
static ssize_t ps2pp_attr_set_smartscroll(struct psmouse *psmouse, void *data, const char *buf, size_t count){ unsigned int value; int err;
err = kstrtouint(buf, 10, &value); if (err) return err;
if (value > 1) return -EINVAL;
ps2pp_set_smartscroll(psmouse, value); psmouse->smartscroll = value; return count;}
PSMOUSE_DEFINE_ATTR(smartscroll, S_IWUSR | S_IRUGO, NULL, ps2pp_attr_show_smartscroll, ps2pp_attr_set_smartscroll);
/* * Support 800 dpi resolution _only_ if the user wants it (there are good * reasons to not use it even if the mouse supports it, and of course there are * also good reasons to use it, let the user decide). */
static void ps2pp_set_resolution(struct psmouse *psmouse, unsigned int resolution){ if (resolution > 400) { struct ps2dev *ps2dev = &psmouse->ps2dev; u8 param = 3;
ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); psmouse->resolution = 800; } else psmouse_set_resolution(psmouse, resolution);}
static void ps2pp_disconnect(struct psmouse *psmouse){ device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll.dattr);}
static const struct ps2pp_info *get_model_info(unsigned char model){ static const struct ps2pp_info ps2pp_list[] = { { 1, 0, 0 }, /* Simple 2-button mouse */ { 12, 0, PS2PP_SIDE_BTN}, { 13, 0, 0 }, { 15, PS2PP_KIND_MX, /* MX1000 */ PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL }, { 40, 0, PS2PP_SIDE_BTN }, { 41, 0, PS2PP_SIDE_BTN }, { 42, 0, PS2PP_SIDE_BTN }, { 43, 0, PS2PP_SIDE_BTN }, { 50, 0, 0 }, { 51, 0, 0 }, { 52, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, { 53, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 56, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, /* Cordless MouseMan Wheel */ { 61, PS2PP_KIND_MX, /* MX700 */ PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | PS2PP_EXTRA_BTN | PS2PP_NAV_BTN }, { 66, PS2PP_KIND_MX, /* MX3100 receiver */ PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL }, { 72, PS2PP_KIND_TRACKMAN, 0 }, /* T-CH11: TrackMan Marble */ { 73, PS2PP_KIND_TRACKMAN, PS2PP_SIDE_BTN }, /* TrackMan FX */ { 75, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 76, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 79, PS2PP_KIND_TRACKMAN, PS2PP_WHEEL }, /* TrackMan with wheel */ { 80, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, { 81, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 83, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 85, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 86, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 87, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 88, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 96, 0, 0 }, { 97, PS2PP_KIND_TP3, PS2PP_WHEEL | PS2PP_HWHEEL }, { 99, PS2PP_KIND_WHEEL, PS2PP_WHEEL }, { 100, PS2PP_KIND_MX, /* MX510 */ PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | PS2PP_EXTRA_BTN | PS2PP_NAV_BTN }, { 111, PS2PP_KIND_MX, PS2PP_WHEEL | PS2PP_SIDE_BTN }, /* MX300 reports task button as side */ { 112, PS2PP_KIND_MX, /* MX500 */ PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | PS2PP_EXTRA_BTN | PS2PP_NAV_BTN }, { 114, PS2PP_KIND_MX, /* MX310 */ PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN | PS2PP_EXTRA_BTN } }; int i;
for (i = 0; i < ARRAY_SIZE(ps2pp_list); i++) if (model == ps2pp_list[i].model) return &ps2pp_list[i];
return NULL;}
/* * Set up input device's properties based on the detected mouse model. */
static void ps2pp_set_model_properties(struct psmouse *psmouse, const struct ps2pp_info *model_info, bool using_ps2pp){ struct input_dev *input_dev = psmouse->dev;
if (model_info->features & PS2PP_SIDE_BTN) input_set_capability(input_dev, EV_KEY, BTN_SIDE);
if (model_info->features & PS2PP_EXTRA_BTN) input_set_capability(input_dev, EV_KEY, BTN_EXTRA);
if (model_info->features & PS2PP_TASK_BTN) input_set_capability(input_dev, EV_KEY, BTN_TASK);
if (model_info->features & PS2PP_NAV_BTN) { input_set_capability(input_dev, EV_KEY, BTN_FORWARD); input_set_capability(input_dev, EV_KEY, BTN_BACK); }
if (model_info->features & PS2PP_WHEEL) input_set_capability(input_dev, EV_REL, REL_WHEEL);
if (model_info->features & PS2PP_HWHEEL) input_set_capability(input_dev, EV_REL, REL_HWHEEL);
switch (model_info->kind) {
case PS2PP_KIND_WHEEL: psmouse->name = "Wheel Mouse"; break;
case PS2PP_KIND_MX: psmouse->name = "MX Mouse"; break;
case PS2PP_KIND_TP3: psmouse->name = "TouchPad 3"; break;
case PS2PP_KIND_TRACKMAN: psmouse->name = "TrackMan"; break;
default: /* * Set name to "Mouse" only when using PS2++, * otherwise let other protocols define suitable * name */ if (using_ps2pp) psmouse->name = "Mouse"; break; }}
static int ps2pp_setup_protocol(struct psmouse *psmouse, const struct ps2pp_info *model_info){ int error;
psmouse->protocol_handler = ps2pp_process_byte; psmouse->pktsize = 3;
if (model_info->kind != PS2PP_KIND_TP3) { psmouse->set_resolution = ps2pp_set_resolution; psmouse->disconnect = ps2pp_disconnect;
error = device_create_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_smartscroll.dattr); if (error) { psmouse_err(psmouse, "failed to create smartscroll sysfs attribute, error: %d\n", error); return error; } }
return 0;}
/* * Logitech magic init. Detect whether the mouse is a Logitech one * and its exact model and try turning on extended protocol for ones * that support it. */
int ps2pp_detect(struct psmouse *psmouse, bool set_properties){ struct ps2dev *ps2dev = &psmouse->ps2dev; const struct ps2pp_info *model_info; u8 param[4]; u8 model, buttons; bool use_ps2pp = false; int error;
param[0] = 0; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); param[1] = 0; ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78); buttons = param[1];
if (!model || !buttons) return -ENXIO;
model_info = get_model_info(model); if (model_info) {
/* * Do Logitech PS2++ / PS2T++ magic init. */ if (model_info->kind == PS2PP_KIND_TP3) { /* Touch Pad 3 */
/* Unprotect RAM */ param[0] = 0x11; param[1] = 0x04; param[2] = 0x68; ps2_command(ps2dev, param, 0x30d1); /* Enable features */ param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b; ps2_command(ps2dev, param, 0x30d1); /* Enable PS2++ */ param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3; ps2_command(ps2dev, param, 0x30d1);
param[0] = 0; if (!ps2_command(ps2dev, param, 0x13d1) && param[0] == 0x06 && param[1] == 0x00 && param[2] == 0x14) { use_ps2pp = true; }
} else {
param[0] = param[1] = param[2] = 0; ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */ ps2pp_cmd(psmouse, param, 0xDB);
if ((param[0] & 0x78) == 0x48 && (param[1] & 0xf3) == 0xc2 && (param[2] & 0x03) == ((param[1] >> 2) & 3)) { ps2pp_set_smartscroll(psmouse, false); use_ps2pp = true; } }
} else { psmouse_warn(psmouse, "Detected unknown Logitech mouse model %d\n", model); }
if (set_properties) { psmouse->vendor = "Logitech"; psmouse->model = model;
if (use_ps2pp) { error = ps2pp_setup_protocol(psmouse, model_info); if (error) return error; }
if (buttons >= 3) input_set_capability(psmouse->dev, EV_KEY, BTN_MIDDLE);
if (model_info) ps2pp_set_model_properties(psmouse, model_info, use_ps2pp); }
return use_ps2pp ? 0 : -ENXIO;}