From: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Dmitry Osipenko <digetx@gmail.com>,
Henrik Rydberg <rydberg@bitmath.org>,
James Chen <james.chen@emc.com.tw>,
Johnny Chuang <johnny.chuang@emc.com.tw>,
Scott Liu <scott.liu@emc.com.tw>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Harry Cutts <hcutts@chromium.org>,
Peter Hutterer <peter.hutterer@who-t.net>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v7 1/4] input: elants: document some registers and values
Date: Sat, 19 Sep 2020 23:41:21 +0200 [thread overview]
Message-ID: <1d2d6d628c00a292a2fc230ab6f274fd22ad78e1.1600551334.git.mirq-linux@rere.qmqm.pl> (raw)
In-Reply-To: <cover.1600551334.git.mirq-linux@rere.qmqm.pl>
Add information found in downstream kernels, to make the code less
magic.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/input/touchscreen/elants_i2c.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 50c348297e38..d51cb910fba1 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -82,7 +82,7 @@
#define HEADER_REPORT_10_FINGER 0x62
-/* Header (4 bytes) plus 3 fill 10-finger packets */
+/* Header (4 bytes) plus 3 full 10-finger packets */
#define MAX_PACKET_SIZE 169
#define BOOT_TIME_DELAY_MS 50
@@ -97,6 +97,10 @@
#define E_INFO_PHY_SCAN 0xD7
#define E_INFO_PHY_DRIVER 0xD8
+/* FW write command, 0x54 0x?? 0x0, 0x01 */
+#define E_POWER_STATE_SLEEP 0x50
+#define E_POWER_STATE_RESUME 0x58
+
#define MAX_RETRIES 3
#define MAX_FW_UPDATE_RETRIES 30
@@ -269,8 +273,8 @@ static int elants_i2c_calibrate(struct elants_data *ts)
{
struct i2c_client *client = ts->client;
int ret, error;
- static const u8 w_flashkey[] = { 0x54, 0xC0, 0xE1, 0x5A };
- static const u8 rek[] = { 0x54, 0x29, 0x00, 0x01 };
+ static const u8 w_flashkey[] = { CMD_HEADER_WRITE, 0xC0, 0xE1, 0x5A };
+ static const u8 rek[] = { CMD_HEADER_WRITE, 0x29, 0x00, 0x01 };
static const u8 rek_resp[] = { CMD_HEADER_REK, 0x66, 0x66, 0x66 };
disable_irq(client->irq);
@@ -1388,7 +1392,9 @@ static int __maybe_unused elants_i2c_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct elants_data *ts = i2c_get_clientdata(client);
- const u8 set_sleep_cmd[] = { 0x54, 0x50, 0x00, 0x01 };
+ const u8 set_sleep_cmd[] = {
+ CMD_HEADER_WRITE, E_POWER_STATE_SLEEP, 0x00, 0x01
+ };
int retry_cnt;
int error;
@@ -1425,7 +1431,9 @@ static int __maybe_unused elants_i2c_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct elants_data *ts = i2c_get_clientdata(client);
- const u8 set_active_cmd[] = { 0x54, 0x58, 0x00, 0x01 };
+ const u8 set_active_cmd[] = {
+ CMD_HEADER_WRITE, E_POWER_STATE_RESUME, 0x00, 0x01
+ };
int retry_cnt;
int error;
--
2.20.1
next prev parent reply other threads:[~2020-09-19 21:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-19 21:41 [PATCH v7 0/4] input: elants: Support Asus TF300T and Nexus 7 touchscreen Michał Mirosław
2020-09-19 21:41 ` [PATCH v7 2/4] input: elants: support old touch report format Michał Mirosław
2020-09-19 21:41 ` Michał Mirosław [this message]
2020-09-19 21:41 ` [PATCH v7 4/4] input: elants: support 0x66 reply opcode for reporting touches Michał Mirosław
2020-09-19 21:41 ` [PATCH v7 3/4] input: elants: read touchscreen size for EKTF3624 Michał Mirosław
2020-09-30 17:28 ` [PATCH v7 0/4] input: elants: Support Asus TF300T and Nexus 7 touchscreen Michał Mirosław
2020-10-01 21:17 ` Dmitry Osipenko
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