diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-cht-wc.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-cht-wc.c | 60 |
1 files changed, 52 insertions, 8 deletions
diff --git a/drivers/i2c/busses/i2c-cht-wc.c b/drivers/i2c/busses/i2c-cht-wc.c index 190abdc46dd3..606ac071cb80 100644 --- a/drivers/i2c/busses/i2c-cht-wc.c +++ b/drivers/i2c/busses/i2c-cht-wc.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-or-later /* - * Intel CHT Whiskey Cove PMIC I2C Master driver + * Intel CHT Whiskey Cove PMIC I2C controller driver * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com> * * Based on various non upstream patches to support the CHT Whiskey Cove PMIC: @@ -106,7 +106,7 @@ static irqreturn_t cht_wc_i2c_adap_thread_handler(int id, void *data) return IRQ_HANDLED; } -static u32 cht_wc_i2c_adap_master_func(struct i2c_adapter *adap) +static u32 cht_wc_i2c_adap_func(struct i2c_adapter *adap) { /* This i2c adapter only supports SMBUS byte transfers */ return I2C_FUNC_SMBUS_BYTE_DATA; @@ -168,7 +168,7 @@ static int cht_wc_i2c_adap_smbus_xfer(struct i2c_adapter *_adap, u16 addr, } static const struct i2c_algorithm cht_wc_i2c_adap_algo = { - .functionality = cht_wc_i2c_adap_master_func, + .functionality = cht_wc_i2c_adap_func, .smbus_xfer = cht_wc_i2c_adap_smbus_xfer, }; @@ -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); @@ -424,7 +467,7 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev) return ret; /* Alloc and register client IRQ */ - adap->irq_domain = irq_domain_add_linear(NULL, 1, &irq_domain_simple_ops, NULL); + adap->irq_domain = irq_domain_create_linear(NULL, 1, &irq_domain_simple_ops, NULL); if (!adap->irq_domain) return -ENOMEM; @@ -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; @@ -483,15 +529,13 @@ remove_irq_domain: return ret; } -static int cht_wc_i2c_adap_i2c_remove(struct platform_device *pdev) +static void cht_wc_i2c_adap_i2c_remove(struct platform_device *pdev) { struct cht_wc_i2c_adap *adap = platform_get_drvdata(pdev); i2c_unregister_device(adap->client); i2c_del_adapter(&adap->adapter); irq_domain_remove(adap->irq_domain); - - return 0; } static const struct platform_device_id cht_wc_i2c_adap_id_table[] = { @@ -510,6 +554,6 @@ static struct platform_driver cht_wc_i2c_adap_driver = { }; module_platform_driver(cht_wc_i2c_adap_driver); -MODULE_DESCRIPTION("Intel CHT Whiskey Cove PMIC I2C Master driver"); +MODULE_DESCRIPTION("Intel CHT Whiskey Cove PMIC I2C controller driver"); MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); MODULE_LICENSE("GPL"); |