All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dudley Du <dudley.dulixin@gmail.com>
To: dmitry.torokhov@gmail.com, rydberg@euromail.se
Cc: Dudley Du <dudley.dulixin@gmail.com>,
	bleung@google.com, linux-input@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v14 11/12] input: cyapa: add gen5 trackpad device force re-calibrate function support
Date: Fri, 12 Dec 2014 10:27:41 +0800	[thread overview]
Message-ID: <1418351262-8163-12-git-send-email-dudley.dulixin@gmail.com> (raw)
In-Reply-To: <1418351262-8163-1-git-send-email-dudley.dulixin@gmail.com>

Add force re-calibrate function supported for gen5 trackpad device,
it can be used through sysfs calibrate interface.
TEST=test on Chromebooks.

Signed-off-by: Dudley Du <dudley.dulixin@gmail.com>
---
 drivers/input/mouse/cyapa_gen5.c | 65 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c
index 365a5b9..f673bb3 100644
--- a/drivers/input/mouse/cyapa_gen5.c
+++ b/drivers/input/mouse/cyapa_gen5.c
@@ -1581,6 +1581,70 @@ static int cyapa_gen5_suspend_scanning(struct cyapa *cyapa)
 	return 0;
 }
 
+static int cyapa_gen5_calibrate_pwcs(struct cyapa *cyapa,
+		u8 calibrate_sensing_mode_type)
+{
+	u8 cmd[8];
+	u8 resp_data[6];
+	int resp_len;
+	int error;
+
+	/* Try to dump all buffered data before doing command. */
+	cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL);
+
+	cmd[0] = 0x04;
+	cmd[1] = 0x00;
+	cmd[2] = 0x06;
+	cmd[3] = 0x00;
+	cmd[4] = GEN5_APP_CMD_REPORT_ID;
+	cmd[5] = 0x00;
+	cmd[6] = GEN5_CMD_CALIBRATE;
+	cmd[7] = calibrate_sensing_mode_type;
+	resp_len = sizeof(resp_data);
+	error = cyapa_i2c_pip_cmd_irq_sync(cyapa,
+			cmd, sizeof(cmd),
+			resp_data, &resp_len,
+			5000, cyapa_gen5_sort_tsg_pip_app_resp_data, true);
+	if (error || !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_CALIBRATE) ||
+			!GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]))
+		return error < 0 ? error : -EAGAIN;
+
+	return 0;
+}
+
+static ssize_t cyapa_gen5_do_calibrate(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	struct cyapa *cyapa = dev_get_drvdata(dev);
+	int error, calibrate_error;
+
+	/* 1. Suspend Scanning*/
+	error = cyapa_gen5_suspend_scanning(cyapa);
+	if (error)
+		return error;
+
+	/* 2. Do mutual capacitance fine calibrate. */
+	calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa,
+				CYAPA_SENSING_MODE_MUTUAL_CAP_FINE);
+	if (calibrate_error)
+		goto resume_scanning;
+
+	/* 3. Do self capacitance calibrate. */
+	calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa,
+				CYAPA_SENSING_MODE_SELF_CAP);
+	if (calibrate_error)
+		goto resume_scanning;
+
+resume_scanning:
+	/* 4. Resume Scanning*/
+	error = cyapa_gen5_resume_scanning(cyapa);
+	if (error || calibrate_error)
+		return error ? error : calibrate_error;
+
+	return count;
+}
+
 static s32 two_complement_to_s32(s32 value, int num_bits)
 {
 	if (value >> (num_bits - 1))
@@ -2558,6 +2622,7 @@ const struct cyapa_dev_ops cyapa_gen5_ops = {
 	.update_fw = cyapa_gen5_do_fw_update,
 
 	.show_baseline = cyapa_gen5_show_baseline,
+	.calibrate_store = cyapa_gen5_do_calibrate,
 
 	.initialize = cyapa_gen5_initialize,
 
-- 
1.9.1


  parent reply	other threads:[~2014-12-12  2:30 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-12  2:27 [PATCH v14 00/12] input: cyapa: instruction of cyapa patches Dudley Du
2014-12-12  2:27 ` [PATCH v14 01/12] input: cyapa: re-design driver to support multi-trackpad in one driver Dudley Du
2014-12-13 11:16   ` Jeremiah Mahler
2014-12-15  3:49     ` Dudley Du
2014-12-12  2:27 ` [PATCH v14 02/12] input: cyapa: add gen5 trackpad device basic functions support Dudley Du
2014-12-12  2:27 ` [PATCH v14 03/12] input: cyapa: add power management interfaces supported for the device Dudley Du
2014-12-12  2:27 ` [PATCH v14 04/12] input: cyapa: add runtime " Dudley Du
2014-12-12  2:27 ` [PATCH v14 05/12] input: cyapa: add sysfs interfaces supported in the cyapa driver Dudley Du
2014-12-12  2:27 ` [PATCH v14 06/12] input: cyapa: add gen3 trackpad device firmware update function support Dudley Du
2014-12-12  2:27 ` [PATCH v14 07/12] input: cyapa: add gen3 trackpad device read baseline " Dudley Du
2014-12-12  2:27 ` [PATCH v14 08/12] input: cyapa: add gen3 trackpad device force re-calibrate " Dudley Du
2014-12-12  2:27 ` [PATCH v14 09/12] input: cyapa: add gen5 trackpad device firmware update " Dudley Du
2014-12-12  2:27 ` [PATCH v14 10/12] input: cyapa: add gen5 trackpad device read baseline " Dudley Du
2014-12-12  2:27 ` Dudley Du [this message]
2014-12-12  2:27 ` [PATCH v14 12/12] input: cyapa: add acpi device id supported Dudley Du
2014-12-13 10:17 ` [PATCH v14 00/12] input: cyapa: instruction of cyapa patches Jeremiah Mahler
2014-12-15  3:47   ` Dudley Du

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=1418351262-8163-12-git-send-email-dudley.dulixin@gmail.com \
    --to=dudley.dulixin@gmail.com \
    --cc=bleung@google.com \
    --cc=dmitry.torokhov@gmail.com \
    --cc=linux-input@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rydberg@euromail.se \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.