From patchwork Sat Sep 9 14:18:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13378233 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92314EE3EC1 for ; Sat, 9 Sep 2023 16:27:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231349AbjIIQZS (ORCPT ); Sat, 9 Sep 2023 12:25:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346378AbjIIOUN (ORCPT ); Sat, 9 Sep 2023 10:20:13 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 905E9E45 for ; Sat, 9 Sep 2023 07:18:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1694269114; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WnWosMnrT6Tj83USTGbuArWvmKIv0wvZD8gCMTfOryA=; b=CDEIMUtrQFna33yC3G8nv0g1PoOKy6yp9fNfB05+poFkts8C/ISu2b3SL16BnaRH6/8SBA 1sLuOmW94Trv3SG6wCqlSwjgQTw6XZAEcliZJT/C5ndS0JItZBdE9oAjxEuDUdeO+zHmdw nEflb/E+7YErcw295b0c/UBcZV6bWYU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-277-UvLTnKirM7qqyzxeWCI1Ug-1; Sat, 09 Sep 2023 10:18:31 -0400 X-MC-Unique: UvLTnKirM7qqyzxeWCI1Ug-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 327848001EA; Sat, 9 Sep 2023 14:18:31 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.192.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 195F7142B960; Sat, 9 Sep 2023 14:18:29 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Mika Westerberg , Andy Shevchenko , Bartosz Golaszewski , Linus Walleij Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org Subject: [PATCH 6/8] platform/x86: x86-android-tablets: Stop using gpiolib private APIs Date: Sat, 9 Sep 2023 16:18:14 +0200 Message-ID: <20230909141816.58358-7-hdegoede@redhat.com> In-Reply-To: <20230909141816.58358-1-hdegoede@redhat.com> References: <20230909141816.58358-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Refactor x86_android_tablet_get_gpiod() to no longer use gpiolib private functions like gpiochip_find(). As a bonus this allows specifying that the GPIO is active-low, like the /CE (charge enable) pin on the bq25892 charger on the Lenovo Yoga Tablet 3. Reported-by: Bartosz Golaszewski Closes: https://lore.kernel.org/platform-driver-x86/20230905185309.131295-12-brgl@bgdev.pl/ Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko --- .../platform/x86/x86-android-tablets/asus.c | 1 + .../platform/x86/x86-android-tablets/core.c | 51 +++++++++++-------- .../platform/x86/x86-android-tablets/lenovo.c | 28 +++++----- .../platform/x86/x86-android-tablets/other.c | 6 +++ .../x86-android-tablets/x86-android-tablets.h | 6 ++- 5 files changed, 55 insertions(+), 37 deletions(-) diff --git a/drivers/platform/x86/x86-android-tablets/asus.c b/drivers/platform/x86/x86-android-tablets/asus.c index f9c4083be86d..227afbb51078 100644 --- a/drivers/platform/x86/x86-android-tablets/asus.c +++ b/drivers/platform/x86/x86-android-tablets/asus.c @@ -303,6 +303,7 @@ static const struct x86_i2c_client_info asus_tf103c_i2c_clients[] __initconst = .index = 28, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "atmel_mxt_ts_irq", }, }, }; diff --git a/drivers/platform/x86/x86-android-tablets/core.c b/drivers/platform/x86/x86-android-tablets/core.c index 3d3101b2848f..673f3a14941b 100644 --- a/drivers/platform/x86/x86-android-tablets/core.c +++ b/drivers/platform/x86/x86-android-tablets/core.c @@ -12,7 +12,7 @@ #include #include -#include +#include #include #include #include @@ -21,35 +21,39 @@ #include #include "x86-android-tablets.h" -/* For gpiochip_get_desc() which is EXPORT_SYMBOL_GPL() */ -#include "../../../gpio/gpiolib.h" -#include "../../../gpio/gpiolib-acpi.h" static struct platform_device *x86_android_tablet_device; -static int gpiochip_find_match_label(struct gpio_chip *gc, void *data) -{ - return gc->label && !strcmp(gc->label, data); -} - -int x86_android_tablet_get_gpiod(const char *label, int pin, struct gpio_desc **desc) +int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id, + bool active_low, enum gpiod_flags dflags, + struct gpio_desc **desc) { + struct gpiod_lookup_table *lookup; struct gpio_desc *gpiod; - struct gpio_chip *chip; - chip = gpiochip_find((void *)label, gpiochip_find_match_label); - if (!chip) { - pr_err("error cannot find GPIO chip %s\n", label); - return -ENODEV; - } + lookup = kzalloc(struct_size(lookup, table, 2), GFP_KERNEL); + if (!lookup) + return -ENOMEM; + + lookup->dev_id = KBUILD_MODNAME; + lookup->table[0].key = chip; + lookup->table[0].chip_hwnum = pin; + lookup->table[0].con_id = con_id; + lookup->table[0].flags = active_low ? GPIO_ACTIVE_LOW : GPIO_ACTIVE_HIGH; + + gpiod_add_lookup_table(lookup); + gpiod = devm_gpiod_get(&x86_android_tablet_device->dev, con_id, dflags); + gpiod_remove_lookup_table(lookup); + kfree(lookup); - gpiod = gpiochip_get_desc(chip, pin); if (IS_ERR(gpiod)) { - pr_err("error %ld getting GPIO %s %d\n", PTR_ERR(gpiod), label, pin); + pr_err("error %ld getting GPIO %s %d\n", PTR_ERR(gpiod), chip, pin); return PTR_ERR(gpiod); } - *desc = gpiod; + if (desc) + *desc = gpiod; + return 0; } @@ -79,7 +83,8 @@ int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data) return irq; case X86_ACPI_IRQ_TYPE_GPIOINT: /* Like acpi_dev_gpio_irq_get(), but without parsing ACPI resources */ - ret = x86_android_tablet_get_gpiod(data->chip, data->index, &gpiod); + ret = x86_android_tablet_get_gpiod(data->chip, data->index, data->con_id, + false, GPIOD_ASIS, &gpiod); if (ret) return ret; @@ -356,7 +361,9 @@ static __init int x86_android_tablet_probe(struct platform_device *pdev) for (i = 0; i < dev_info->gpio_button_count; i++) { ret = x86_android_tablet_get_gpiod(dev_info->gpio_button[i].chip, - dev_info->gpio_button[i].pin, &gpiod); + dev_info->gpio_button[i].pin, + dev_info->gpio_button[i].button.desc, + false, GPIOD_IN, &gpiod); if (ret < 0) { x86_android_tablet_remove(pdev); return ret; @@ -364,6 +371,8 @@ static __init int x86_android_tablet_probe(struct platform_device *pdev) buttons[i] = dev_info->gpio_button[i].button; buttons[i].gpio = desc_to_gpio(gpiod); + /* Release gpiod so that gpio-keys can request it */ + devm_gpiod_put(&x86_android_tablet_device->dev, gpiod); } pdata.buttons = buttons; diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c index 26a4ef670ad7..35aa2968d726 100644 --- a/drivers/platform/x86/x86-android-tablets/lenovo.c +++ b/drivers/platform/x86/x86-android-tablets/lenovo.c @@ -95,6 +95,7 @@ static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst .index = 56, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "goodix_ts_irq", }, }, { /* Wacom Digitizer in keyboard half */ @@ -111,6 +112,7 @@ static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst .index = 49, .trigger = ACPI_LEVEL_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "wacom_irq", }, }, { /* LP8557 Backlight controller */ @@ -136,6 +138,7 @@ static const struct x86_i2c_client_info lenovo_yb1_x90_i2c_clients[] __initconst .index = 77, .trigger = ACPI_LEVEL_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "hideep_ts_irq", }, }, }; @@ -321,6 +324,7 @@ static struct x86_i2c_client_info lenovo_yoga_tab2_830_1050_i2c_clients[] __init .index = 2, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_HIGH, + .con_id = "bq24292i_irq", }, }, { /* BQ27541 fuel-gauge */ @@ -431,7 +435,8 @@ static int __init lenovo_yoga_tab2_830_1050_init_touchscreen(void) int ret; /* Use PMIC GPIO 10 bootstrap pin to differentiate 830 vs 1050 */ - ret = x86_android_tablet_get_gpiod("gpio_crystalcove", 10, &gpiod); + ret = x86_android_tablet_get_gpiod("gpio_crystalcove", 10, "yoga_bootstrap", + false, GPIOD_IN, &gpiod); if (ret) return ret; @@ -615,6 +620,7 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = { .index = 5, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "bq25892_0_irq", }, }, { /* bq27500 fuel-gauge for the round li-ion cells in the hinge */ @@ -640,6 +646,7 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = { .index = 77, .trigger = ACPI_LEVEL_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "hideep_ts_irq", }, }, { /* LP8557 Backlight controller */ @@ -655,7 +662,6 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = { static int __init lenovo_yt3_init(void) { - struct gpio_desc *gpiod; int ret; /* @@ -665,31 +671,23 @@ static int __init lenovo_yt3_init(void) * * The bq25890_charger driver controls these through I2C, but this only * works if not overridden by the pins. Set these pins here: - * 1. Set /CE to 0 to allow charging. + * 1. Set /CE to 1 to allow charging. * 2. Set OTG to 0 disable V5 boost output since the 5V boost output of * the main "bq25892_1" charger is used when necessary. */ /* /CE pin */ - ret = x86_android_tablet_get_gpiod("INT33FF:02", 22, &gpiod); + ret = x86_android_tablet_get_gpiod("INT33FF:02", 22, "bq25892_0_ce", + true, GPIOD_OUT_HIGH, NULL); if (ret < 0) return ret; - /* - * The gpio_desc returned by x86_android_tablet_get_gpiod() is a "raw" - * gpio_desc, that is there is no way to pass lookup-flags like - * GPIO_ACTIVE_LOW. Set the GPIO to 0 here to enable charging since - * the /CE pin is active-low, but not marked as such in the gpio_desc. - */ - gpiod_set_value(gpiod, 0); - /* OTG pin */ - ret = x86_android_tablet_get_gpiod("INT33FF:03", 19, &gpiod); + ret = x86_android_tablet_get_gpiod("INT33FF:03", 19, "bq25892_0_otg", + false, GPIOD_OUT_LOW, NULL); if (ret < 0) return ret; - gpiod_set_value(gpiod, 0); - /* Enable the regulators used by the touchscreen */ intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0x9b, 0x02, 0xff); intel_soc_pmic_exec_mipi_pmic_seq_element(0x6e, 0xa0, 0x02, 0xff); diff --git a/drivers/platform/x86/x86-android-tablets/other.c b/drivers/platform/x86/x86-android-tablets/other.c index 621ca1e54d1f..bc6bbf7ec6ea 100644 --- a/drivers/platform/x86/x86-android-tablets/other.c +++ b/drivers/platform/x86/x86-android-tablets/other.c @@ -47,6 +47,7 @@ static const struct x86_i2c_client_info acer_b1_750_i2c_clients[] __initconst = .index = 3, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "NVT-ts_irq", }, }, { /* BMA250E accelerometer */ @@ -62,6 +63,7 @@ static const struct x86_i2c_client_info acer_b1_750_i2c_clients[] __initconst = .index = 25, .trigger = ACPI_LEVEL_SENSITIVE, .polarity = ACPI_ACTIVE_HIGH, + .con_id = "bma250e_irq", }, }, }; @@ -174,6 +176,7 @@ static const struct x86_i2c_client_info chuwi_hi8_i2c_clients[] __initconst = { .index = 23, .trigger = ACPI_LEVEL_SENSITIVE, .polarity = ACPI_ACTIVE_HIGH, + .con_id = "bma250e_irq", }, }, }; @@ -312,6 +315,7 @@ static const struct x86_i2c_client_info medion_lifetab_s10346_i2c_clients[] __in .index = 23, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_HIGH, + .con_id = "kxtj21009_irq", }, }, { /* goodix touchscreen */ @@ -402,6 +406,7 @@ static const struct x86_i2c_client_info nextbook_ares8_i2c_clients[] __initconst .index = 3, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "ft5416_irq", }, }, }; @@ -460,6 +465,7 @@ static const struct x86_i2c_client_info nextbook_ares8a_i2c_clients[] __initcons .index = 17, .trigger = ACPI_EDGE_SENSITIVE, .polarity = ACPI_ACTIVE_LOW, + .con_id = "ft5416_irq", }, }, }; diff --git a/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h b/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h index bf97fb84c0d4..9d2fb7fded6d 100644 --- a/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h +++ b/drivers/platform/x86/x86-android-tablets/x86-android-tablets.h @@ -10,6 +10,7 @@ #ifndef __PDX86_X86_ANDROID_TABLETS_H #define __PDX86_X86_ANDROID_TABLETS_H +#include #include #include #include @@ -37,6 +38,7 @@ struct x86_acpi_irq_data { int index; int trigger; /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */ int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */ + const char *con_id; }; /* Structs to describe devices to instantiate */ @@ -81,7 +83,9 @@ struct x86_dev_info { void (*exit)(void); }; -int x86_android_tablet_get_gpiod(const char *label, int pin, struct gpio_desc **desc); +int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id, + bool active_low, enum gpiod_flags dflags, + struct gpio_desc **desc); int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data); /*