linux-kernel - [PATCH v1 1/3] i2c: mux: gpio: Replace custom acpi_get_local

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Date:   Mon, 15 Nov 2021 17:41:59 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Evan Green <evgreen@...omium.org>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Peter Korsgaard <peter.korsgaard@...co.com>,
        Peter Rosin <peda@...ntia.se>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/3] i2c: mux: gpio: Replace custom acpi_get_local_address()

Recently ACPI gained the acpi_get_local_address() API which may be used
instead of home grown i2c_mux_gpio_get_acpi_adr().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/i2c/muxes/i2c-mux-gpio.c | 43 ++------------------------------
 1 file changed, 2 insertions(+), 41 deletions(-)

diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index bac415a52b78..31e6eb1591bb 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -49,45 +49,6 @@ static int i2c_mux_gpio_deselect(struct i2c_mux_core *muxc, u32 chan)
 	return 0;
 }
 
-#ifdef CONFIG_ACPI
-
-static int i2c_mux_gpio_get_acpi_adr(struct device *dev,
-				     struct fwnode_handle *fwdev,
-				     unsigned int *adr)
-
-{
-	unsigned long long adr64;
-	acpi_status status;
-
-	status = acpi_evaluate_integer(ACPI_HANDLE_FWNODE(fwdev),
-				       METHOD_NAME__ADR,
-				       NULL, &adr64);
-
-	if (!ACPI_SUCCESS(status)) {
-		dev_err(dev, "Cannot get address\n");
-		return -EINVAL;
-	}
-
-	*adr = adr64;
-	if (*adr != adr64) {
-		dev_err(dev, "Address out of range\n");
-		return -ERANGE;
-	}
-
-	return 0;
-}
-
-#else
-
-static int i2c_mux_gpio_get_acpi_adr(struct device *dev,
-				     struct fwnode_handle *fwdev,
-				     unsigned int *adr)
-{
-	return -EINVAL;
-}
-
-#endif
-
 static int i2c_mux_gpio_probe_fw(struct gpiomux *mux,
 				 struct platform_device *pdev)
 {
@@ -141,9 +102,9 @@ static int i2c_mux_gpio_probe_fw(struct gpiomux *mux,
 			fwnode_property_read_u32(child, "reg", values + i);
 
 		} else if (is_acpi_node(child)) {
-			rc = i2c_mux_gpio_get_acpi_adr(dev, child, values + i);
+			rc = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), values + i);
 			if (rc)
-				return rc;
+				return dev_err_probe(dev, rc, "Cannot get address\n");
 		}
 
 		i++;
-- 
2.33.0