From ee65d4b36de8ddf4467f788faa5d8ddd1bfcdaa2 Mon Sep 17 00:00:00 2001 From: Yunkang Tang Date: Thu, 26 Dec 2013 14:54:19 -0800 Subject: [PATCH] Input: ALPS - add support for "Dolphin" devices This adds support for another flavor of ALPS protocol used in newer "Dolphin" devices. Signed-off-by: Yunkang Tang Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 214 ++++++++++++++++++++++++++++++------- drivers/input/mouse/alps.h | 7 +- 2 files changed, 179 insertions(+), 42 deletions(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 5cf62e315218..fb15c64ffb95 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -276,6 +276,57 @@ static void alps_process_packet_v1_v2(struct psmouse *psmouse) input_sync(dev); } +/* + * Process bitmap data for V5 protocols. Return value is null. + * + * The bitmaps don't have enough data to track fingers, so this function + * only generates points representing a bounding box of at most two contacts. + * These two points are returned in x1, y1, x2, and y2. + */ +static void alps_process_bitmap_dolphin(struct alps_data *priv, + struct alps_fields *fields, + int *x1, int *y1, int *x2, int *y2) +{ + int box_middle_x, box_middle_y; + unsigned int x_map, y_map; + unsigned char start_bit, end_bit; + unsigned char x_msb, x_lsb, y_msb, y_lsb; + + x_map = fields->x_map; + y_map = fields->y_map; + + if (!x_map || !y_map) + return; + + /* Get Most-significant and Least-significant bit */ + x_msb = fls(x_map); + x_lsb = ffs(x_map); + y_msb = fls(y_map); + y_lsb = ffs(y_map); + + /* Most-significant bit should never exceed max sensor line number */ + if (x_msb > priv->x_bits || y_msb > priv->y_bits) + return; + + *x1 = *y1 = *x2 = *y2 = 0; + + if (fields->fingers > 1) { + start_bit = priv->x_bits - x_msb; + end_bit = priv->x_bits - x_lsb; + box_middle_x = (priv->x_max * (start_bit + end_bit)) / + (2 * (priv->x_bits - 1)); + + start_bit = y_lsb - 1; + end_bit = y_msb - 1; + box_middle_y = (priv->y_max * (start_bit + end_bit)) / + (2 * (priv->y_bits - 1)); + *x1 = fields->x; + *y1 = fields->y; + *x2 = 2 * box_middle_x - *x1; + *y2 = 2 * box_middle_y - *y1; + } +} + /* * Process bitmap data from v3 and v4 protocols. Returns the number of * fingers detected. A return value of 0 means at least one of the @@ -481,7 +532,8 @@ static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) f->ts_middle = !!(p[3] & 0x40); } -static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p) +static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse) { f->first_mp = !!(p[4] & 0x40); f->is_mp = !!(p[0] & 0x40); @@ -502,48 +554,61 @@ static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p) alps_decode_buttons_v3(f, p); } -static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p) +static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse) { - alps_decode_pinnacle(f, p); + alps_decode_pinnacle(f, p, psmouse); f->x_map |= (p[5] & 0x10) << 11; f->y_map |= (p[5] & 0x20) << 6; } -static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p) +static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse) { + u64 palm_data = 0; + struct alps_data *priv = psmouse->private; + f->first_mp = !!(p[0] & 0x02); f->is_mp = !!(p[0] & 0x20); - f->fingers = ((p[0] & 0x6) >> 1 | + if (!f->is_mp) { + f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); + f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); + f->z = (p[0] & 4) ? 0 : p[5] & 0x7f; + alps_decode_buttons_v3(f, p); + } else { + f->fingers = ((p[0] & 0x6) >> 1 | (p[0] & 0x10) >> 2); - f->x_map = ((p[2] & 0x60) >> 5) | - ((p[4] & 0x7f) << 2) | - ((p[5] & 0x7f) << 9) | - ((p[3] & 0x07) << 16) | - ((p[3] & 0x70) << 15) | - ((p[0] & 0x01) << 22); - f->y_map = (p[1] & 0x7f) | - ((p[2] & 0x1f) << 7); - - f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); - f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); - f->z = (p[0] & 4) ? 0 : p[5] & 0x7f; - alps_decode_buttons_v3(f, p); + palm_data = (p[1] & 0x7f) | + ((p[2] & 0x7f) << 7) | + ((p[4] & 0x7f) << 14) | + ((p[5] & 0x7f) << 21) | + ((p[3] & 0x07) << 28) | + (((u64)p[3] & 0x70) << 27) | + (((u64)p[0] & 0x01) << 34); + + /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ + f->y_map = palm_data & (BIT(priv->y_bits) - 1); + + /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ + f->x_map = (palm_data >> priv->y_bits) & + (BIT(priv->x_bits) - 1); + } } -static void alps_process_touchpad_packet_v3(struct psmouse *psmouse) +static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char *packet = psmouse->packet; struct input_dev *dev = psmouse->dev; struct input_dev *dev2 = priv->dev2; int x1 = 0, y1 = 0, x2 = 0, y2 = 0; - int fingers = 0, bmap_fingers; - struct alps_fields f; + int fingers = 0, bmap_fn; + struct alps_fields f = {0}; - priv->decode_fields(&f, packet); + priv->decode_fields(&f, packet, psmouse); /* * There's no single feature of touchpad position and bitmap packets @@ -560,19 +625,38 @@ static void alps_process_touchpad_packet_v3(struct psmouse *psmouse) */ if (f.is_mp) { fingers = f.fingers; - bmap_fingers = alps_process_bitmap(priv, - f.x_map, f.y_map, - &x1, &y1, &x2, &y2); - - /* - * We shouldn't report more than one finger if - * we don't have two coordinates. - */ - if (fingers > 1 && bmap_fingers < 2) - fingers = bmap_fingers; - - /* Now process position packet */ - priv->decode_fields(&f, priv->multi_data); + if (priv->proto_version == ALPS_PROTO_V3) { + bmap_fn = alps_process_bitmap(priv, f.x_map, + f.y_map, &x1, &y1, + &x2, &y2); + + /* + * We shouldn't report more than one finger if + * we don't have two coordinates. + */ + if (fingers > 1 && bmap_fn < 2) + fingers = bmap_fn; + + /* Now process position packet */ + priv->decode_fields(&f, priv->multi_data, + psmouse); + } else { + /* + * Because Dolphin uses position packet's + * coordinate data as Pt1 and uses it to + * calculate Pt2, so we need to do position + * packet decode first. + */ + priv->decode_fields(&f, priv->multi_data, + psmouse); + + /* + * Since Dolphin's finger number is reliable, + * there is no need to compare with bmap_fn. + */ + alps_process_bitmap_dolphin(priv, &f, &x1, &y1, + &x2, &y2); + } } else { priv->multi_packet = 0; } @@ -662,7 +746,7 @@ static void alps_process_packet_v3(struct psmouse *psmouse) return; } - alps_process_touchpad_packet_v3(psmouse); + alps_process_touchpad_packet_v3_v5(psmouse); } static void alps_process_packet_v6(struct psmouse *psmouse) @@ -1709,6 +1793,52 @@ error: return -1; } +static int alps_dolphin_get_device_area(struct psmouse *psmouse, + struct alps_data *priv) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[4] = {0}; + int num_x_electrode, num_y_electrode; + + if (alps_enter_command_mode(psmouse)) + return -1; + + param[0] = 0x0a; + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) + return -1; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) + return -1; + + /* + * Dolphin's sensor line number is not fixed. It can be calculated + * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. + * Further more, we can get device's x_max and y_max by multiplying + * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. + * + * e.g. When we get register's sensor_x = 11 & sensor_y = 8, + * real sensor line number X = 11 + 8 = 19, and + * real sensor line number Y = 8 + 1 = 9. + * So, x_max = (19 - 1) * 64 = 1152, and + * y_max = (9 - 1) * 64 = 512. + */ + num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); + num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); + priv->x_bits = num_x_electrode; + priv->y_bits = num_y_electrode; + priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; + priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; + + if (alps_exit_command_mode(psmouse)) + return -1; + + return 0; +} + static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; @@ -1763,13 +1893,13 @@ static void alps_set_defaults(struct alps_data *priv) break; case ALPS_PROTO_V5: priv->hw_init = alps_hw_init_dolphin_v1; - priv->process_packet = alps_process_packet_v3; + priv->process_packet = alps_process_touchpad_packet_v3_v5; priv->decode_fields = alps_decode_dolphin; priv->set_abs_params = alps_set_abs_params_mt; priv->nibble_commands = alps_v3_nibble_commands; priv->addr_command = PSMOUSE_CMD_RESET_WRAP; priv->byte0 = 0xc8; - priv->mask0 = 0xc8; + priv->mask0 = 0xd8; priv->flags = 0; priv->x_max = 1360; priv->y_max = 660; @@ -1845,11 +1975,13 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) if (alps_match_table(psmouse, priv, e7, ec) == 0) { return 0; } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && - ec[0] == 0x73 && ec[1] == 0x01) { + ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { priv->proto_version = ALPS_PROTO_V5; alps_set_defaults(priv); - - return 0; + if (alps_dolphin_get_device_area(psmouse, priv)) + return -EIO; + else + return 0; } else if (ec[0] == 0x88 && ec[1] == 0x08) { priv->proto_version = ALPS_PROTO_V3; alps_set_defaults(priv); diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h index 704f0f924307..03f88b6940c7 100644 --- a/drivers/input/mouse/alps.h +++ b/drivers/input/mouse/alps.h @@ -19,6 +19,10 @@ #define ALPS_PROTO_V5 5 #define ALPS_PROTO_V6 6 +#define DOLPHIN_COUNT_PER_ELECTRODE 64 +#define DOLPHIN_PROFILE_XOFFSET 8 /* x-electrode offset */ +#define DOLPHIN_PROFILE_YOFFSET 1 /* y-electrode offset */ + /** * struct alps_model_info - touchpad ID table * @signature: E7 response string to match. @@ -146,7 +150,8 @@ struct alps_data { int (*hw_init)(struct psmouse *psmouse); void (*process_packet)(struct psmouse *psmouse); - void (*decode_fields)(struct alps_fields *f, unsigned char *p); + void (*decode_fields)(struct alps_fields *f, unsigned char *p, + struct psmouse *psmouse); void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1); int prev_fin; -- 2.20.1