Add information found in downstream kernels, to make the code less
magic.
Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
Reviewed-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Tested-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/input/touchscreen/elants_i2c.c | 29 +++++++++++++++++++++-----
1 file changed, 24 insertions(+), 5 deletions(-)
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index 2289f9638116..d2175fb6209a 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -81,7 +81,11 @@
#define HEADER_REPORT_10_FINGER 0x62
-/* Header (4 bytes) plus 3 fill 10-finger packets */
+/* Power state */
+#define PWR_STATE_DEEP_SLEEP 0
+#define PWR_STATE_NORMAL 1
+
+/* Header (4 bytes) plus 3 full 10-finger packets */
#define MAX_PACKET_SIZE 169
#define BOOT_TIME_DELAY_MS 50
@@ -91,10 +95,21 @@
#define E_ELAN_INFO_BC_VER 0x10
#define E_ELAN_INFO_TEST_VER 0xE0
#define E_ELAN_INFO_FW_ID 0xF0
+#define E_POWER_MODE 0x40
+#define E_POWER_STATE 0x50
+#define E_INFO_X_RES 0x60
+#define E_INFO_Y_RES 0x63
#define E_INFO_OSR 0xD6
#define E_INFO_PHY_SCAN 0xD7
#define E_INFO_PHY_DRIVER 0xD8
+/* FW write command, 0x54 0x?? 0x0, 0x01 */
+#define E_POWER_MODE_BATTERY 0x40
+#define E_POWER_MODE_AC 0x41
+#define E_POWER_MODE_USB 0x42
+#define E_POWER_STATE_SLEEP 0x50
+#define E_POWER_STATE_RESUME 0x58
+
#define MAX_RETRIES 3
#define MAX_FW_UPDATE_RETRIES 30
@@ -239,8 +254,8 @@ 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);
@@ -1366,7 +1381,9 @@ 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;
@@ -1403,7 +1420,9 @@ 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
