Linux Input Archive on lore.kernel.org
 help / color / Atom feed
From: Jiada Wang <jiada_wang@mentor.com>
To: <jikos@kernel.org>, <benjamin.tissoires@redhat.com>,
	<rydberg@bitmath.org>, <dmitry.torokhov@gmail.com>,
	<nick@shmanahar.org>, <bsz@semihalf.com>
Cc: <linux-input@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<erosca@de.adit-jv.com>, <Andrew_Gabbasov@mentor.com>,
	<jiada_wang@mentor.com>
Subject: [PATCH v7 10/48] Input: atmel_mxt_ts - implement support for T107 active stylus
Date: Wed, 12 Feb 2020 00:41:40 -0800
Message-ID: <20200212084218.32344-11-jiada_wang@mentor.com> (raw)
In-Reply-To: <20200212084218.32344-1-jiada_wang@mentor.com>

From: Nick Dyer <nick.dyer@itdev.co.uk>

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
(cherry picked from ndyer/linux/for-upstream commit 20e357dd9acf8c2040068c8b22d6bc1401a1893f)
[gdavis: Forward port and fix conflicts due to applying upstream commit
	 96a938aa214e ("Input: atmel_mxt_ts - remove platform data
	 support").]
Signed-off-by: George G. Davis <george_davis@mentor.com>
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 117 ++++++++++++++++++++++-
 1 file changed, 113 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index bb88bc8ce817..2f8708c3b3c7 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -72,6 +72,7 @@
 #define MXT_SPT_CTECONFIG_T46		46
 #define MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71 71
 #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100
+#define MXT_PROCI_ACTIVESTYLUS_T107	107
 
 /* MXT_GEN_MESSAGE_T5 object */
 #define MXT_RPTID_NOMSG		0xff
@@ -181,6 +182,7 @@ struct t37_debug {
 enum t100_type {
 	MXT_T100_TYPE_FINGER		= 1,
 	MXT_T100_TYPE_PASSIVE_STYLUS	= 2,
+	MXT_T100_TYPE_ACTIVE_STYLUS	= 3,
 	MXT_T100_TYPE_HOVERING_FINGER	= 4,
 	MXT_T100_TYPE_GLOVE		= 5,
 	MXT_T100_TYPE_LARGE_TOUCH	= 6,
@@ -192,6 +194,16 @@ enum t100_type {
 #define MXT_TOUCH_MAJOR_DEFAULT		1
 #define MXT_PRESSURE_DEFAULT		1
 
+/* Gen2 Active Stylus */
+#define MXT_T107_STYLUS_STYAUX		42
+#define MXT_T107_STYLUS_STYAUX_PRESSURE	BIT(0)
+#define MXT_T107_STYLUS_STYAUX_PEAK	BIT(4)
+
+#define MXT_T107_STYLUS_HOVER		BIT(0)
+#define MXT_T107_STYLUS_TIPSWITCH	BIT(1)
+#define MXT_T107_STYLUS_BUTTON0		BIT(2)
+#define MXT_T107_STYLUS_BUTTON1		BIT(3)
+
 /* Delay times */
 #define MXT_BACKUP_TIME		50	/* msec */
 #define MXT_RESET_GPIO_TIME	20	/* msec */
@@ -313,10 +325,12 @@ struct mxt_data {
 	struct t7_config t7_cfg;
 	struct mxt_dbg dbg;
 	struct gpio_desc *reset_gpio;
-	bool use_retrigen_workaround;
 	unsigned long t15_keystatus;
 	int t15_num_keys;
 	const unsigned int *t15_keymap;
+	u8 stylus_aux_pressure;
+	u8 stylus_aux_peak;
+	bool use_retrigen_workaround;
 
 	/* Cached parameters from object table */
 	u16 T5_address;
@@ -337,6 +351,7 @@ struct mxt_data {
 	u8 T48_reportid;
 	u8 T100_reportid_min;
 	u8 T100_reportid_max;
+	u16 T107_address;
 
 	/* for fw update in bootloader */
 	struct completion bl_completion;
@@ -908,6 +923,8 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 	u8 major = 0;
 	u8 pressure = 0;
 	u8 orientation = 0;
+	bool active = false;
+	bool hover = false;
 
 	id = message[0] - data->T100_reportid_min - 2;
 
@@ -926,6 +943,8 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 		case MXT_T100_TYPE_HOVERING_FINGER:
 			tool = MT_TOOL_FINGER;
 			distance = MXT_DISTANCE_HOVERING;
+			hover = true;
+			active = true;
 
 			if (data->t100_aux_vect)
 				orientation = message[data->t100_aux_vect];
@@ -936,6 +955,8 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 		case MXT_T100_TYPE_GLOVE:
 			tool = MT_TOOL_FINGER;
 			distance = MXT_DISTANCE_ACTIVE_TOUCH;
+			hover = false;
+			active = true;
 
 			if (data->t100_aux_area)
 				major = message[data->t100_aux_area];
@@ -950,6 +971,9 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 
 		case MXT_T100_TYPE_PASSIVE_STYLUS:
 			tool = MT_TOOL_PEN;
+			distance = MXT_DISTANCE_ACTIVE_TOUCH;
+			hover = false;
+			active = true;
 
 			/*
 			 * Passive stylus is reported with size zero so
@@ -962,6 +986,31 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 
 			break;
 
+		case MXT_T100_TYPE_ACTIVE_STYLUS:
+			/* Report input buttons */
+			input_report_key(input_dev, BTN_STYLUS,
+					 message[6] & MXT_T107_STYLUS_BUTTON0);
+			input_report_key(input_dev, BTN_STYLUS2,
+					 message[6] & MXT_T107_STYLUS_BUTTON1);
+
+			/* stylus in range, but position unavailable */
+			if (!(message[6] & MXT_T107_STYLUS_HOVER))
+				break;
+
+			tool = MT_TOOL_PEN;
+			distance = MXT_DISTANCE_ACTIVE_TOUCH;
+			active = true;
+			major = MXT_TOUCH_MAJOR_DEFAULT;
+
+			if (!(message[6] & MXT_T107_STYLUS_TIPSWITCH)) {
+				hover = true;
+				distance = MXT_DISTANCE_HOVERING;
+			} else if (data->stylus_aux_pressure) {
+				pressure = message[data->stylus_aux_pressure];
+			}
+
+			break;
+
 		case MXT_T100_TYPE_LARGE_TOUCH:
 			/* Ignore suppressed touch */
 			break;
@@ -976,12 +1025,12 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 	 * Values reported should be non-zero if tool is touching the
 	 * device
 	 */
-	if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER)
+	if (!pressure && !hover)
 		pressure = MXT_PRESSURE_DEFAULT;
 
 	input_mt_slot(input_dev, id);
 
-	if (status & MXT_T100_DETECT) {
+	if (active) {
 		dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n",
 			id, type, x, y, major, pressure, orientation);
 
@@ -992,6 +1041,7 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 		input_report_abs(input_dev, ABS_MT_PRESSURE, pressure);
 		input_report_abs(input_dev, ABS_MT_DISTANCE, distance);
 		input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation);
+
 	} else {
 		dev_dbg(dev, "[%u] release\n", id);
 
@@ -1863,6 +1913,9 @@ static int mxt_parse_object_table(struct mxt_data *data,
 			/* first two report IDs reserved */
 			data->num_touchids = object->num_report_ids - 2;
 			break;
+		case MXT_PROCI_ACTIVESTYLUS_T107:
+			data->T107_address = object->start_address;
+			break;
 		}
 
 		end_address = object->start_address
@@ -2023,6 +2076,54 @@ static int mxt_read_t9_resolution(struct mxt_data *data)
 	return 0;
 }
 
+static int mxt_set_up_active_stylus(struct input_dev *input_dev,
+				    struct mxt_data *data)
+{
+	struct i2c_client *client = data->client;
+	int error;
+	struct mxt_object *object;
+	u8 styaux;
+	int aux;
+	u8 ctrl;
+
+	object = mxt_get_object(data, MXT_PROCI_ACTIVESTYLUS_T107);
+	if (!object)
+		return 0;
+
+	error = __mxt_read_reg(client, object->start_address, 1, &ctrl);
+	if (error)
+		return error;
+
+	/* Check enable bit */
+	if (!(ctrl & 0x01))
+		return 0;
+
+	error = __mxt_read_reg(client,
+			       object->start_address + MXT_T107_STYLUS_STYAUX,
+			       1, &styaux);
+	if (error)
+		return error;
+
+	/* map aux bits */
+	aux = 7;
+
+	if (styaux & MXT_T107_STYLUS_STYAUX_PRESSURE)
+		data->stylus_aux_pressure = aux++;
+
+	if (styaux & MXT_T107_STYLUS_STYAUX_PEAK)
+		data->stylus_aux_peak = aux++;
+
+	input_set_capability(input_dev, EV_KEY, BTN_STYLUS);
+	input_set_capability(input_dev, EV_KEY, BTN_STYLUS2);
+	input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, 0, MT_TOOL_MAX, 0, 0);
+
+	dev_dbg(&client->dev,
+		"T107 active stylus, aux map pressure:%u peak:%u\n",
+		data->stylus_aux_pressure, data->stylus_aux_peak);
+
+	return 0;
+}
+
 static int mxt_read_t100_config(struct mxt_data *data)
 {
 	struct i2c_client *client = data->client;
@@ -2229,7 +2330,7 @@ static int mxt_initialize_input_device(struct mxt_data *data)
 
 	if (data->multitouch == MXT_TOUCH_MULTI_T9 ||
 	    (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
-	     data->t100_aux_ampl)) {
+	     (data->t100_aux_ampl || data->stylus_aux_pressure))) {
 		input_set_abs_params(input_dev, ABS_MT_PRESSURE,
 				     0, 255, 0, 0);
 	}
@@ -2247,6 +2348,14 @@ static int mxt_initialize_input_device(struct mxt_data *data)
 				     0, 255, 0, 0);
 	}
 
+	/* For T107 Active Stylus */
+	if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 &&
+	    data->T107_address) {
+		error = mxt_set_up_active_stylus(input_dev, data);
+		if (error)
+			dev_warn(dev, "Failed to read T107 config\n");
+	}
+
 	/* For T15 Key Array */
 	if (data->T15_reportid_min) {
 		data->t15_keystatus = 0;
-- 
2.17.1


  parent reply index

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-12  8:41 [PATCH v7 00/48] atmel_mxt_ts misc Jiada Wang
2020-02-12  8:41 ` [PATCH v7 01/48] Input: introduce input_mt_report_slot_inactive Jiada Wang
2020-02-12  8:41 ` [PATCH v7 02/48] Input: atmel_mxt_ts - rework sysfs init/remove Jiada Wang
2020-02-12  8:41 ` [PATCH v7 03/48] Input: atmel_mxt_ts - only read messages in mxt_acquire_irq() when necessary Jiada Wang
2020-03-17 22:44   ` Dmitry Osipenko
2020-03-18 13:02     ` Wang, Jiada
2020-02-12  8:41 ` [PATCH v7 04/48] Input: atmel_mxt_ts - split large i2c transfers into blocks Jiada Wang
2020-02-12  8:41 ` [PATCH v7 05/48] Input: atmel_mxt_ts - output status from T48 Noise Supression Jiada Wang
2020-02-12  8:41 ` [PATCH v7 06/48] Input: atmel_mxt_ts - output status from T42 Touch Suppression Jiada Wang
2020-02-12  8:41 ` [PATCH v7 07/48] Input: atmel_mxt_ts - implement T9 vector/orientation support Jiada Wang
2020-02-12  8:41 ` [PATCH v7 08/48] Input: atmel_mxt_ts - implement T15 Key Array support Jiada Wang
2020-02-12  8:41 ` [PATCH v7 09/48] Input: atmel_mxt_ts - handle reports from T47 Stylus object Jiada Wang
2020-02-12  8:41 ` Jiada Wang [this message]
2020-02-12  8:41 ` [PATCH v7 11/48] Input: atmel_mxt_ts - add debug for T92 gesture and T93 touch seq msgs Jiada Wang
2020-02-12  8:41 ` [PATCH v7 12/48] Input: atmel_mxt_ts - release touch state during suspend Jiada Wang
2020-02-12  8:41 ` [PATCH v7 13/48] Input: atmel_mxt_ts - add regulator control support Jiada Wang
2020-03-12 15:26   ` Dmitry Osipenko
2020-02-12  8:41 ` [PATCH v7 14/48] Input: atmel_mxt_ts - report failures in suspend/resume Jiada Wang
2020-02-12  8:41 ` [PATCH v7 15/48] Input: atmel_mxt_ts - allow specification of firmware file name Jiada Wang
2020-02-12  8:41 ` [PATCH v7 16/48] Input: atmel_mxt_ts - handle cfg filename via pdata/sysfs Jiada Wang
2020-02-12  8:41 ` [PATCH v7 17/48] Input: atmel_mxt_ts - allow input name to be specified in platform data Jiada Wang
2020-02-12  8:41 ` [PATCH v7 18/48] Input: atmel_mxt_ts - add config checksum attribute to sysfs Jiada Wang
2020-02-12  8:41 ` [PATCH v7 19/48] Input: atmel_mxt_ts - refactor firmware flash to extract context into struct Jiada Wang
2020-02-12  8:41 ` [PATCH v7 20/48] Input: atmel_mxt_ts - refactor code to enter bootloader into separate func Jiada Wang
2020-02-12  8:41 ` [PATCH v7 21/48] Input: atmel_mxt_ts - combine bootloader version query with probe Jiada Wang
2020-02-12  8:41 ` [PATCH v7 22/48] Input: atmel_mxt_ts - improve bootloader state machine handling Jiada Wang
2020-03-12 15:28   ` Dmitry Osipenko
2020-02-12  8:41 ` [PATCH v7 23/48] Input: atmel_mxt_ts - rename bl_completion to chg_completion Jiada Wang
2020-02-12  8:41 ` [PATCH v7 24/48] Input: atmel_mxt_ts - make bootloader interrupt driven Jiada Wang
2020-02-12  8:41 ` [PATCH v7 25/48] Input: atmel_mxt_ts - delay enabling IRQ when not using regulators Jiada Wang
2020-02-12  8:41 ` [PATCH v7 26/48] Input: atmel_mxt_ts - implement I2C retries Jiada Wang
2020-02-12  8:41 ` [PATCH v7 27/48] Input: atmel_mxt_ts - orientation is not present in hover Jiada Wang
2020-02-12  8:41 ` [PATCH v7 28/48] Input: atmel_mxt_ts - implement debug output for messages Jiada Wang
2020-02-12  8:41 ` [PATCH v7 29/48] Input: atmel_mxt_ts - implement improved debug message interface Jiada Wang
2020-02-12  8:42 ` [PATCH v7 30/48] Input: atmel_mxt_ts - eliminate data->raw_info_block Jiada Wang
2020-02-12  8:42 ` [PATCH v7 31/48] Input: atmel_mxt_ts - Change call-points of mxt_free_* functions Jiada Wang
2020-02-12  8:42 ` [PATCH v7 32/48] Input: atmel_mxt_ts - rely on calculated_crc rather than file config_crc Jiada Wang
2020-02-12  8:42 ` [PATCH v7 33/48] input: atmel_mxt_ts: export GPIO reset line via sysfs Jiada Wang
2020-02-12  8:42 ` [PATCH v7 34/48] input: atmel_mxt_ts: Add Missing Delay for reset handling of Atmel touch panel controller in detachable displays Jiada Wang
2020-02-12  8:42 ` [PATCH v7 35/48] Input: atmel_mxt_ts: Add support for run self-test routine Jiada Wang
2020-02-12  8:42 ` [PATCH v7 36/48] Input: atmel_mxt_ts: Limit the max bytes transferred in an i2c transaction Jiada Wang
2020-02-12  8:42 ` [PATCH v7 37/48] Input: atmel_mxt_ts: return error from mxt_process_messages_until_invalid() Jiada Wang
2020-02-12  8:42 ` [PATCH v7 38/48] Input: Atmel: improve error handling in mxt_start() Jiada Wang
2020-02-12  8:42 ` [PATCH v7 39/48] Input: Atmel: improve error handling in mxt_initialize() Jiada Wang
2020-02-12  8:42 ` [PATCH v7 40/48] Input: Atmel: improve error handling in mxt_update_cfg() Jiada Wang
2020-02-12  8:42 ` [PATCH v7 41/48] Input: Atmel: Improve error handling in mxt_initialize_input_device() Jiada Wang
2020-02-12  8:42 ` [PATCH v7 42/48] Input: Atmel: handle ReportID "0x00" while processing T5 messages Jiada Wang
2020-02-12  8:42 ` [PATCH v7 43/48] Input: Atmel: use T44 object to process " Jiada Wang
2020-02-12  8:42 ` [PATCH v7 44/48] Input: atmel_mxt_ts: use gpiod_set_value_cansleep for reset pin Jiada Wang
2020-02-12  8:42 ` [PATCH v7 45/48] input: touchscreen: atmel_mxt_ts: Added sysfs entry for touchscreen status Jiada Wang
2020-02-12  8:42 ` [PATCH v7 46/48] input: atmel_mxt_ts: added sysfs interface to update atmel T38 data Jiada Wang
2020-02-12  8:42 ` [PATCH v7 47/48] Input: atmel_mxt_ts: Implement synchronization during various operation Jiada Wang
2020-02-12  8:42 ` [PATCH v7 48/48] Input: atmel_mxt_ts - Fix compilation warning Jiada Wang
2020-03-11  1:09 ` [PATCH v7 00/48] atmel_mxt_ts misc Wang, Jiada
2020-03-12 15:21 ` Dmitry Osipenko
2020-03-16  6:50   ` Wang, Jiada
2020-03-20  3:37   ` Wang, Jiada
2020-03-20 15:53     ` Dmitry Osipenko
2020-03-23  2:25       ` Wang, Jiada
2020-03-24 14:54         ` Dmitry Osipenko
2020-03-24 15:03           ` Dmitry Osipenko
2020-03-25 12:13           ` Wang, Jiada

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200212084218.32344-11-jiada_wang@mentor.com \
    --to=jiada_wang@mentor.com \
    --cc=Andrew_Gabbasov@mentor.com \
    --cc=benjamin.tissoires@redhat.com \
    --cc=bsz@semihalf.com \
    --cc=dmitry.torokhov@gmail.com \
    --cc=erosca@de.adit-jv.com \
    --cc=jikos@kernel.org \
    --cc=linux-input@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=nick@shmanahar.org \
    --cc=rydberg@bitmath.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux Input Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-input/0 linux-input/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-input linux-input/ https://lore.kernel.org/linux-input \
		linux-input@vger.kernel.org
	public-inbox-index linux-input

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-input


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git