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[71.218.50.136]) by smtp.gmail.com with ESMTPSA id gw3-20020a0566381ee300b0046b692e719esm3207609jab.150.2023.12.26.11.22.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Dec 2023 11:22:04 -0800 (PST) From: Mark Hasemeyer To: LKML Cc: AngeloGioacchino Del Regno , Krzysztof Kozlowski , Rob Herring , Konrad Dybcio , Sudeep Holla , Andy Shevchenko , Raul Rangel , Tzung-Bi Shih , Mark Hasemeyer , Mika Westerberg , Wolfram Sang , linux-acpi@vger.kernel.org, linux-i2c@vger.kernel.org Subject: [PATCH v3 03/24] i2c: acpi: Modify i2c_acpi_get_irq() to use resource Date: Tue, 26 Dec 2023 12:21:07 -0700 Message-ID: <20231226122113.v3.3.Ib65096357993ff602e7dd0000dd59a36571c48d8@changeid> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog In-Reply-To: <20231226192149.1830592-1-markhas@chromium.org> References: <20231226192149.1830592-1-markhas@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1786373586456520831 X-GMAIL-MSGID: 1786373586456520831 The i2c_acpi_irq_context structure provides redundant information that can be provided with struct resource. Refactor i2c_acpi_get_irq() to use struct resource instead of struct i2c_acpi_irq_context. Suggested-by: Andy Shevchenko Signed-off-by: Mark Hasemeyer --- Changes in v3: -Add Suggested-by -Check resource flags for valid irq -Drop error pointer check -Invert error checking logic in i2c_acpi_get_irq() -Drop redundant 0 in struct resource init -Drop unnecessary check for irq > 0 when setting I2C_CLIENT_WAKE Changes in v2: -New patch drivers/i2c/i2c-core-acpi.c | 43 ++++++++++++++----------------------- drivers/i2c/i2c-core-base.c | 6 +++--- drivers/i2c/i2c-core.h | 4 ++-- 3 files changed, 21 insertions(+), 32 deletions(-) diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 8126a87baf3d4..e48bb24b72127 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -175,64 +175,53 @@ static int i2c_acpi_do_lookup(struct acpi_device *adev, static int i2c_acpi_add_irq_resource(struct acpi_resource *ares, void *data) { - struct i2c_acpi_irq_context *irq_ctx = data; - struct resource r; + struct resource *r = data; - if (irq_ctx->irq > 0) + if (r->flags) return 1; - if (!acpi_dev_resource_interrupt(ares, 0, &r)) + if (!acpi_dev_resource_interrupt(ares, 0, r)) return 1; - irq_ctx->irq = i2c_dev_irq_from_resources(&r, 1); - irq_ctx->wake_capable = r.flags & IORESOURCE_IRQ_WAKECAPABLE; + i2c_dev_irq_from_resources(r, 1); return 1; /* No need to add resource to the list */ } /** - * i2c_acpi_get_irq - get device IRQ number from ACPI + * i2c_acpi_get_irq - get device IRQ number from ACPI and populate resource * @client: Pointer to the I2C client device - * @wake_capable: Set to true if the IRQ is wake capable + * @r: resource with populated IRQ information * * Find the IRQ number used by a specific client device. * * Return: The IRQ number or an error code. */ -int i2c_acpi_get_irq(struct i2c_client *client, bool *wake_capable) +int i2c_acpi_get_irq(struct i2c_client *client, struct resource *r) { struct acpi_device *adev = ACPI_COMPANION(&client->dev); struct list_head resource_list; - struct resource irqres; - struct i2c_acpi_irq_context irq_ctx = { - .irq = -ENOENT, - }; int ret; + if (!r) + return -EINVAL; + INIT_LIST_HEAD(&resource_list); ret = acpi_dev_get_resources(adev, &resource_list, - i2c_acpi_add_irq_resource, &irq_ctx); + i2c_acpi_add_irq_resource, r); if (ret < 0) return ret; acpi_dev_free_resource_list(&resource_list); - if (irq_ctx.irq == -ENOENT) { - ret = acpi_dev_get_gpio_irq_resource(adev, NULL, 0, &irqres); - if (ret) - return ret; - irq_ctx.irq = irqres.start; - irq_ctx.wake_capable = irqres.flags & IORESOURCE_IRQ_WAKECAPABLE; - } - - if (irq_ctx.irq < 0) - return irq_ctx.irq; + if (!r->flags) + ret = acpi_dev_get_gpio_irq_resource(adev, NULL, 0, r); - if (wake_capable) - *wake_capable = irq_ctx.wake_capable; + if (!r->flags) + return ret; - return irq_ctx.irq; + return r->start; } static int i2c_acpi_get_info(struct acpi_device *adev, diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 3bd48d4b6318f..0339c298ba50b 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -513,10 +513,10 @@ static int i2c_device_probe(struct device *dev) if (irq == -EINVAL || irq == -ENODATA) irq = of_irq_get(dev->of_node, 0); } else if (ACPI_COMPANION(dev)) { - bool wake_capable; + struct resource r = {}; - irq = i2c_acpi_get_irq(client, &wake_capable); - if (irq > 0 && wake_capable) + irq = i2c_acpi_get_irq(client, &r); + if (r.flags & IORESOURCE_IRQ_WAKECAPABLE) client->flags |= I2C_CLIENT_WAKE; } if (irq == -EPROBE_DEFER) { diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h index 05b8b8dfa9bdd..b5dc559c49d11 100644 --- a/drivers/i2c/i2c-core.h +++ b/drivers/i2c/i2c-core.h @@ -61,11 +61,11 @@ static inline int __i2c_check_suspended(struct i2c_adapter *adap) #ifdef CONFIG_ACPI void i2c_acpi_register_devices(struct i2c_adapter *adap); -int i2c_acpi_get_irq(struct i2c_client *client, bool *wake_capable); +int i2c_acpi_get_irq(struct i2c_client *client, struct resource *r); #else /* CONFIG_ACPI */ static inline void i2c_acpi_register_devices(struct i2c_adapter *adap) { } -static inline int i2c_acpi_get_irq(struct i2c_client *client, bool *wake_capable) +static inline int i2c_acpi_get_irq(struct i2c_client *client, struct resource *r) { return 0; }