From: Kevin Cernekee Date: Thu, 14 Feb 2013 06:22:08 +0000 (-0800) Subject: Input: ALPS - use function pointers for different protocol handlers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=24af5cb95f1b93c6c72a73113494ace4bcbee5a2;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git Input: ALPS - use function pointers for different protocol handlers In anticipation of adding more ALPS protocols and more per-device quirks, use function pointers instead of switch statements to call functions that differ from one device to the next. Signed-off-by: Kevin Cernekee Tested-by: Dave Turvene Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index e6a27a5cbb1d..fe45687cf65a 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -114,6 +114,11 @@ static const struct alps_model_info alps_model_data[] = { { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 }, }; +static void alps_set_abs_params_st(struct alps_data *priv, + struct input_dev *dev1); +static void alps_set_abs_params_mt(struct alps_data *priv, + struct input_dev *dev1); + /* * XXX - this entry is suspicious. First byte has zero lower nibble, * which is what a normal mouse would report. Also, the value 0x0e @@ -695,24 +700,6 @@ static void alps_process_packet_v4(struct psmouse *psmouse) input_sync(dev); } -static void alps_process_packet(struct psmouse *psmouse) -{ - struct alps_data *priv = psmouse->private; - - switch (priv->proto_version) { - case ALPS_PROTO_V1: - case ALPS_PROTO_V2: - alps_process_packet_v1_v2(psmouse); - break; - case ALPS_PROTO_V3: - alps_process_packet_v3(psmouse); - break; - case ALPS_PROTO_V4: - alps_process_packet_v4(psmouse); - break; - } -} - static void alps_report_bare_ps2_packet(struct psmouse *psmouse, unsigned char packet[], bool report_buttons) @@ -770,7 +757,7 @@ static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) return PSMOUSE_BAD_DATA; } - alps_process_packet(psmouse); + priv->process_packet(psmouse); /* Continue with the next packet */ psmouse->packet[0] = psmouse->packet[6]; @@ -814,6 +801,7 @@ static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) static void alps_flush_packet(unsigned long data) { struct psmouse *psmouse = (struct psmouse *)data; + struct alps_data *priv = psmouse->private; serio_pause_rx(psmouse->ps2dev.serio); @@ -831,7 +819,7 @@ static void alps_flush_packet(unsigned long data) "refusing packet %3ph (suspected interleaved ps/2)\n", psmouse->packet + 3); } else { - alps_process_packet(psmouse); + priv->process_packet(psmouse); } psmouse->pktcnt = 0; } @@ -876,7 +864,7 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) } if (psmouse->pktcnt == psmouse->pktsize) { - alps_process_packet(psmouse); + priv->process_packet(psmouse); return PSMOUSE_FULL_PACKET; } @@ -1430,25 +1418,26 @@ error: return -1; } -static int alps_hw_init(struct psmouse *psmouse) +static void alps_set_defaults(struct alps_data *priv) { - struct alps_data *priv = psmouse->private; - int ret = -1; - switch (priv->proto_version) { case ALPS_PROTO_V1: case ALPS_PROTO_V2: - ret = alps_hw_init_v1_v2(psmouse); + priv->hw_init = alps_hw_init_v1_v2; + priv->process_packet = alps_process_packet_v1_v2; + priv->set_abs_params = alps_set_abs_params_st; break; case ALPS_PROTO_V3: - ret = alps_hw_init_v3(psmouse); + priv->hw_init = alps_hw_init_v3; + priv->process_packet = alps_process_packet_v3; + priv->set_abs_params = alps_set_abs_params_mt; break; case ALPS_PROTO_V4: - ret = alps_hw_init_v4(psmouse); + priv->hw_init = alps_hw_init_v4; + priv->process_packet = alps_process_packet_v4; + priv->set_abs_params = alps_set_abs_params_mt; break; } - - return ret; } static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv, @@ -1465,6 +1454,8 @@ static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv, model->command_mode_resp == ec[2])) { priv->proto_version = model->proto_version; + alps_set_defaults(priv); + priv->flags = model->flags; priv->byte0 = model->byte0; priv->mask0 = model->mask0; @@ -1523,7 +1514,7 @@ static int alps_reconnect(struct psmouse *psmouse) if (alps_identify(psmouse, priv) < 0) return -1; - return alps_hw_init(psmouse); + return priv->hw_init(psmouse); } static void alps_disconnect(struct psmouse *psmouse) @@ -1536,6 +1527,29 @@ static void alps_disconnect(struct psmouse *psmouse) kfree(priv); } +static void alps_set_abs_params_st(struct alps_data *priv, + struct input_dev *dev1) +{ + input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0); + input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0); +} + +static void alps_set_abs_params_mt(struct alps_data *priv, + struct input_dev *dev1) +{ + set_bit(INPUT_PROP_SEMI_MT, dev1->propbit); + input_mt_init_slots(dev1, 2, 0); + input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0); + input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0); + + set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit); + set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); + set_bit(BTN_TOOL_QUADTAP, dev1->keybit); + + input_set_abs_params(dev1, ABS_X, 0, ALPS_V3_X_MAX, 0, 0); + input_set_abs_params(dev1, ABS_Y, 0, ALPS_V3_Y_MAX, 0, 0); +} + int alps_init(struct psmouse *psmouse) { struct alps_data *priv; @@ -1556,7 +1570,7 @@ int alps_init(struct psmouse *psmouse) if (alps_identify(psmouse, priv) < 0) goto init_fail; - if (alps_hw_init(psmouse)) + if (priv->hw_init(psmouse)) goto init_fail; /* @@ -1578,28 +1592,7 @@ int alps_init(struct psmouse *psmouse) dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); - switch (priv->proto_version) { - case ALPS_PROTO_V1: - case ALPS_PROTO_V2: - input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0); - input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0); - break; - case ALPS_PROTO_V3: - case ALPS_PROTO_V4: - set_bit(INPUT_PROP_SEMI_MT, dev1->propbit); - input_mt_init_slots(dev1, 2, 0); - input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0); - input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0); - - set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit); - set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); - set_bit(BTN_TOOL_QUADTAP, dev1->keybit); - - input_set_abs_params(dev1, ABS_X, 0, ALPS_V3_X_MAX, 0, 0); - input_set_abs_params(dev1, ABS_Y, 0, ALPS_V3_Y_MAX, 0, 0); - break; - } - + priv->set_abs_params(priv, dev1); input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); if (priv->flags & ALPS_WHEEL) { diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h index a81b31830454..0934f8bf7d76 100644 --- a/drivers/input/mouse/alps.h +++ b/drivers/input/mouse/alps.h @@ -72,6 +72,9 @@ struct alps_nibble_commands { * mask0, should match byte0. * @mask0: The mask used to check the first byte of the report. * @flags: Additional device capabilities (passthrough port, trackstick, etc.). + * @hw_init: Protocol-specific hardware init function. + * @process_packet: Protocol-specific function to process a report packet. + * @set_abs_params: Protocol-specific function to configure the input_dev. * @prev_fin: Finger bit from previous packet. * @multi_packet: Multi-packet data in progress. * @multi_data: Saved multi-packet data. @@ -94,6 +97,10 @@ struct alps_data { unsigned char byte0, mask0; unsigned char flags; + int (*hw_init)(struct psmouse *psmouse); + void (*process_packet)(struct psmouse *psmouse); + void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1); + int prev_fin; int multi_packet; unsigned char multi_data[6];