On Sun, Apr 26, 2020 at 07:47:49PM +0200, Michał Mirosław wrote:
> Add information found in downstream kernels, to make the code less
> magic.
> 
> Signed-off-by: Michał Mirosław <mirq-li...@rere.qmqm.pl>
> Reviewed-by: Dmitry Osipenko <dig...@gmail.com>
> Tested-by: Dmitry Osipenko <dig...@gmail.com>
> ---
>  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

I would prefer if we introduced these in the patches that use them.

>  #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

What is this for?

> +#define E_POWER_STATE_SLEEP  0x50
> +#define E_POWER_STATE_RESUME 0x58

Thanks.

-- 
Dmitry

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