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Commit 15aa5c75 authored by Mattia Dongili's avatar Mattia Dongili Committed by Matthew Garrett
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sony-laptop: store battery care limits on batteries 



Some models offer the option to store the limits on the battery
(firmware?).

Signed-off-by: default avatarMattia Dongili <malattia@linux.it>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent bb384b52

drivers/platform/x86/sony-laptop.c

+21 −20
Original line number Diff line number Diff line
@@ -1916,32 +1916,33 @@ static ssize_t sony_nc_battery_care_limit_store(struct device *dev, 
	 *  bits 4,5: store the limit into the EC

	 *  bits 6,7: store the limit into the battery

	 */

	cmd = 0;



	/*

	 * handle 0x0115 should allow storing on battery too;

	 * handle 0x0136 same as 0x0115 + health status;

	 * handle 0x013f, same as 0x0136 but no storing on the battery

	 *

	 * Store only inside the EC for now, regardless the handle number

	 */

	if (value == 0)

		/* disable limits */

		cmd = 0x0;



	else if (value <= 50)

		cmd = 0x21;

	if (value > 0) {

		if (value <= 50)

			cmd = 0x20;



		else if (value <= 80)

		cmd = 0x11;

			cmd = 0x10;



		else if (value <= 100)

		cmd = 0x31;

			cmd = 0x30;



		else

			return -EINVAL;



	if (sony_call_snc_handle(bcare_ctl->handle, (cmd << 0x10) | 0x0100,

				&result))

		/*

		 * handle 0x0115 should allow storing on battery too;

		 * handle 0x0136 same as 0x0115 + health status;

		 * handle 0x013f, same as 0x0136 but no storing on the battery

		 */

		if (bcare_ctl->handle != 0x013f)

			cmd = cmd | (cmd << 2);



		cmd = (cmd | 0x1) << 0x10;

	}



	if (sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result))

		return -EIO;



	return count;