Commit 0e61637f authored by Hans de Goede's avatar Hans de Goede Committed by Lee Jones
Browse files

i2c: cht-wc: Add charger-chip info for the Lenovo Yoga Tab 3 YT3-X90F 



On x86 devices with a CHT Whiskey Cove PMIC the driver for
the I2C bus coming from the PMIC is responsible for instantiating
the i2c_client for the charger chip.

Add the necessary i2c_board_info for this.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Acked-by: default avatarWolfram Sang <wsa@kernel.org>
Signed-off-by: default avatarLee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230126153823.22146-3-hdegoede@redhat.com
parent 8d9ef694

drivers/i2c/busses/i2c-cht-wc.c

+46 −0
Original line number Diff line number Diff line
@@ -380,6 +380,49 @@ static struct i2c_board_info lenovo_yogabook1_board_info = { 
	.platform_data = &bq2589x_pdata,

};



/********** Lenovo Yogabook YT3-X90F charger settings **********/

static const char * const lenovo_yt3_bq25892_1_suppliers[] = { "cht_wcove_pwrsrc" };



/*

 * bq25892 charger settings for the round li-ion cells in the hinge,

 * this is the main / biggest battery.

 */

static const struct property_entry lenovo_yt3_bq25892_1_props[] = {

	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", lenovo_yt3_bq25892_1_suppliers),

	PROPERTY_ENTRY_STRING("linux,secondary-charger-name", "bq25890-charger-0"),

	PROPERTY_ENTRY_U32("linux,iinlim-percentage", 60),

	PROPERTY_ENTRY_U32("linux,pump-express-vbus-max", 12000000),

	PROPERTY_ENTRY_BOOL("linux,skip-reset"),

	/*

	 * The firmware sets everything to the defaults, leading to a low(ish)

	 * charge-current and battery-voltage of 2048mA resp 4.2V. Use the

	 * Android values instead of "linux,read-back-settings" to fix this.

	 */

	PROPERTY_ENTRY_U32("ti,charge-current", 3072000),

	PROPERTY_ENTRY_U32("ti,battery-regulation-voltage", 4352000),

	PROPERTY_ENTRY_U32("ti,termination-current", 128000),

	PROPERTY_ENTRY_U32("ti,precharge-current", 128000),

	PROPERTY_ENTRY_U32("ti,minimum-sys-voltage", 3700000),

	PROPERTY_ENTRY_BOOL("ti,use-ilim-pin"),

	/* Set 5V boost current-limit to 1.2A (MAX/POR values are 2.45A/1.4A) */

	PROPERTY_ENTRY_U32("ti,boost-voltage", 4998000),

	PROPERTY_ENTRY_U32("ti,boost-max-current", 1200000),

	{ }

};



static const struct software_node lenovo_yt3_bq25892_1_node = {

	.properties = lenovo_yt3_bq25892_1_props,

};



/* bq25892 charger for the round li-ion cells in the hinge */

static struct i2c_board_info lenovo_yoga_tab3_board_info = {

	.type = "bq25892",

	.addr = 0x6b,

	.dev_name = "bq25892_1",

	.swnode = &lenovo_yt3_bq25892_1_node,

	.platform_data = &bq2589x_pdata,

};



static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)

{

	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
@@ -459,6 +502,9 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev) 
	case INTEL_CHT_WC_LENOVO_YOGABOOK1:

		board_info = &lenovo_yogabook1_board_info;

		break;

	case INTEL_CHT_WC_LENOVO_YT3_X90:

		board_info = &lenovo_yoga_tab3_board_info;

		break;

	default:

		dev_warn(&pdev->dev, "Unknown model, not instantiating charger device\n");

		break;