forked from Minki/linux
Input: elants - document some registers and values
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> Link: https://lore.kernel.org/r/728fff020bc92be10d84cc2a7ea8af6fd99af96c.1607669375.git.mirq-linux@rere.qmqm.pl Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -82,7 +82,7 @@
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#define HEADER_REPORT_10_FINGER 0x62
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/* Header (4 bytes) plus 3 fill 10-finger packets */
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/* Header (4 bytes) plus 3 full 10-finger packets */
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#define MAX_PACKET_SIZE 169
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#define BOOT_TIME_DELAY_MS 50
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@ -97,6 +97,10 @@
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#define E_INFO_PHY_SCAN 0xD7
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#define E_INFO_PHY_DRIVER 0xD8
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/* FW write command, 0x54 0x?? 0x0, 0x01 */
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#define E_POWER_STATE_SLEEP 0x50
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#define E_POWER_STATE_RESUME 0x58
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#define MAX_RETRIES 3
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#define MAX_FW_UPDATE_RETRIES 30
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@ -269,8 +273,8 @@ static int elants_i2c_calibrate(struct elants_data *ts)
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{
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struct i2c_client *client = ts->client;
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int ret, error;
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static const u8 w_flashkey[] = { 0x54, 0xC0, 0xE1, 0x5A };
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static const u8 rek[] = { 0x54, 0x29, 0x00, 0x01 };
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static const u8 w_flashkey[] = { CMD_HEADER_WRITE, 0xC0, 0xE1, 0x5A };
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static const u8 rek[] = { CMD_HEADER_WRITE, 0x29, 0x00, 0x01 };
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static const u8 rek_resp[] = { CMD_HEADER_REK, 0x66, 0x66, 0x66 };
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disable_irq(client->irq);
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@ -1388,7 +1392,9 @@ static int __maybe_unused elants_i2c_suspend(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct elants_data *ts = i2c_get_clientdata(client);
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const u8 set_sleep_cmd[] = { 0x54, 0x50, 0x00, 0x01 };
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const u8 set_sleep_cmd[] = {
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CMD_HEADER_WRITE, E_POWER_STATE_SLEEP, 0x00, 0x01
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};
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int retry_cnt;
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int error;
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@ -1425,7 +1431,9 @@ static int __maybe_unused elants_i2c_resume(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct elants_data *ts = i2c_get_clientdata(client);
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const u8 set_active_cmd[] = { 0x54, 0x58, 0x00, 0x01 };
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const u8 set_active_cmd[] = {
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CMD_HEADER_WRITE, E_POWER_STATE_RESUME, 0x00, 0x01
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};
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int retry_cnt;
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int error;
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