linux-kernel - [PATCH 2/6] Input: edt-ft5x06 - get/set M12 report rate by sysfs

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Message-Id: <20220213171532.346270-3-dario.binacchi@amarulasolutions.com>
Date:   Sun, 13 Feb 2022 18:15:28 +0100
From:   Dario Binacchi <dario.binacchi@...rulasolutions.com>
To:     linux-kernel@...r.kernel.org
Cc:     Dario Binacchi <dario.binacchi@...rulasolutions.com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Oliver Graute <oliver.graute@...oconnector.com>,
        Stephan Gerhold <stephan@...hold.net>,
        linux-input@...r.kernel.org
Subject: [PATCH 2/6] Input: edt-ft5x06 - get/set M12 report rate by sysfs

Add support for reading/writing scan rate (SC) register for M12 by
sysfs. The register value is equal to the SC (Hz), unlike M06, where
instead it is equal to SC / 10.

Co-developed-by: Michael Trimarchi <michael@...rulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@...rulasolutions.com>
Tested-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
---

 drivers/input/touchscreen/edt-ft5x06.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index bb2e1cbffba7..77f061af5c61 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -47,6 +47,8 @@
 #define M09_REGISTER_NUM_X		0x94
 #define M09_REGISTER_NUM_Y		0x95
 
+#define M12_REGISTER_REPORT_RATE	0x88
+
 #define EV_REGISTER_THRESHOLD		0x40
 #define EV_REGISTER_GAIN		0x41
 #define EV_REGISTER_OFFSET_Y		0x45
@@ -523,9 +525,9 @@ static EDT_ATTR(offset_y, S_IWUSR | S_IRUGO, NO_REGISTER, NO_REGISTER,
 /* m06: range 20 to 80, m09: range 0 to 30, m12: range 1 to 255... */
 static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD,
 		M09_REGISTER_THRESHOLD, EV_REGISTER_THRESHOLD, 0, 255);
-/* m06: range 3 to 14, m12: (0x64: 100Hz) */
+/* m06: range 3 to 14, m12: range 1 to 255 */
 static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE,
-		NO_REGISTER, NO_REGISTER, 0, 255);
+		M12_REGISTER_REPORT_RATE, NO_REGISTER, 0, 255);
 
 static struct attribute *edt_ft5x06_attrs[] = {
 	&edt_ft5x06_attr_gain.dattr.attr,
@@ -1030,7 +1032,8 @@ static void edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
 	case EDT_M09:
 	case EDT_M12:
 		reg_addr->reg_threshold = M09_REGISTER_THRESHOLD;
-		reg_addr->reg_report_rate = NO_REGISTER;
+		reg_addr->reg_report_rate = tsdata->version == EDT_M12 ?
+			M12_REGISTER_REPORT_RATE : NO_REGISTER;
 		reg_addr->reg_gain = M09_REGISTER_GAIN;
 		reg_addr->reg_offset = M09_REGISTER_OFFSET;
 		reg_addr->reg_offset_x = NO_REGISTER;
-- 
2.32.0