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Mon, 18 May 2026 00:54:12 -0700 (PDT) From: "Marco Scardovi (scardracs)" To: Linus Walleij , Bartosz Golaszewski Cc: Mika Westerberg , Andy Shevchenko , linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, "Marco Scardovi (scardracs)" Subject: [PATCH 09/12] gpiolib: acpi: Remove unused static address space emulation from core Date: Mon, 18 May 2026 09:53:54 +0200 Message-ID: <20260518075357.112584-10-mscardovi95@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260518075357.112584-1-mscardovi95@gmail.com> References: <20260518075357.112584-1-mscardovi95@gmail.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Assisted-by: Antigravity:gemini-3-flash Signed-off-by: Marco Scardovi --- drivers/gpio/gpiolib-acpi-core.c | 120 ------------------------------- 1 file changed, 120 deletions(-) diff --git a/drivers/gpio/gpiolib-acpi-core.c b/drivers/gpio/gpiolib-acpi-core.c index 4802d4948f89..b8976a0c798e 100644 --- a/drivers/gpio/gpiolib-acpi-core.c +++ b/drivers/gpio/gpiolib-acpi-core.c @@ -1049,126 +1049,6 @@ int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *con_id, } EXPORT_SYMBOL_GPL(acpi_dev_gpio_irq_wake_get_by); -static acpi_status -acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address, - u32 bits, u64 *value, void *handler_context, - void *region_context) -{ - struct acpi_gpio_chip *achip = region_context; - struct gpio_chip *chip = achip->chip; - struct acpi_resource_gpio *agpio; - struct acpi_resource *ares; - u16 pin_index = address; - acpi_status status; - int length; - int i; - - status = acpi_buffer_to_resource(achip->conn_info.connection, - achip->conn_info.length, &ares); - if (ACPI_FAILURE(status)) - return status; - - if (WARN_ON(ares->type != ACPI_RESOURCE_TYPE_GPIO)) { - ACPI_FREE(ares); - return AE_BAD_PARAMETER; - } - - agpio = &ares->data.gpio; - - if (WARN_ON(agpio->io_restriction == ACPI_IO_RESTRICT_INPUT && - function == ACPI_WRITE)) { - ACPI_FREE(ares); - return AE_BAD_PARAMETER; - } - - if (pin_index >= agpio->pin_table_length) { - ACPI_FREE(ares); - return AE_BAD_PARAMETER; - } - - length = min(agpio->pin_table_length, pin_index + bits); - for (i = pin_index; i < length; ++i) { - unsigned int pin = agpio->pin_table[i]; - struct acpi_gpio_connection *conn; - struct gpio_desc *desc; - u16 word, shift; - bool found; - - mutex_lock(&achip->conn_lock); - - found = false; - list_for_each_entry(conn, &achip->conns, node) { - if (conn->pin == pin) { - found = true; - desc = conn->desc; - break; - } - } - - /* - * The same GPIO can be shared between operation region and - * event but only if the access here is ACPI_READ. In that - * case we "borrow" the event GPIO instead. - */ - if (!found && agpio->shareable == ACPI_SHARED && - function == ACPI_READ) { - struct acpi_gpio_event *event; - - list_for_each_entry(event, &achip->events, node) { - if (event->pin == pin) { - desc = event->desc; - found = true; - break; - } - } - } - - if (!found) { - desc = acpi_request_own_gpiod(chip, agpio, i, "ACPI:OpRegion"); - if (IS_ERR(desc)) { - mutex_unlock(&achip->conn_lock); - status = AE_ERROR; - goto out; - } - - conn = kzalloc_obj(*conn); - if (!conn) { - gpiochip_free_own_desc(desc); - mutex_unlock(&achip->conn_lock); - status = AE_NO_MEMORY; - goto out; - } - - conn->pin = pin; - conn->desc = desc; - list_add_tail(&conn->node, &achip->conns); - } - - mutex_unlock(&achip->conn_lock); - - /* - * For the cases when OperationRegion() consists of more than - * 64 bits calculate the word and bit shift to use that one to - * access the value. - */ - word = i / 64; - shift = i % 64; - - if (function == ACPI_WRITE) { - gpiod_set_raw_value_cansleep(desc, value[word] & BIT_ULL(shift)); - } else { - if (gpiod_get_raw_value_cansleep(desc)) - value[word] |= BIT_ULL(shift); - else - value[word] &= ~BIT_ULL(shift); - } - } - -out: - ACPI_FREE(ares); - return status; -} - void acpi_gpiochip_add(struct gpio_chip *chip) { -- 2.54.0