linux-kernel - [PATCH v4 2/4] leds: simatic-ipc-leds-gpio: move two extra gpio pins into another table

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230524124628.32295-3-henning.schild@siemens.com>
Date:   Wed, 24 May 2023 14:46:26 +0200
From:   Henning Schild <henning.schild@...mens.com>
To:     Pavel Machek <pavel@....cz>, Lee Jones <lee@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        <linux-kernel@...r.kernel.org>, <linux-leds@...r.kernel.org>,
        <platform-driver-x86@...r.kernel.org>
CC:     Henning Schild <henning.schild@...mens.com>
Subject: [PATCH v4 2/4] leds: simatic-ipc-leds-gpio: move two extra gpio pins into another table

There are two special pins needed to init the LEDs. We used to have them
at the end of the gpiod_lookup table to give to "leds-gpio". A cleaner
way is to have a dedicated table for the special pins.

Signed-off-by: Henning Schild <henning.schild@...mens.com>
---
 drivers/leds/simple/simatic-ipc-leds-gpio.c | 28 ++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/drivers/leds/simple/simatic-ipc-leds-gpio.c b/drivers/leds/simple/simatic-ipc-leds-gpio.c
index 1a1cfdad6218..0f1fde44e8d9 100644
--- a/drivers/leds/simple/simatic-ipc-leds-gpio.c
+++ b/drivers/leds/simple/simatic-ipc-leds-gpio.c
@@ -16,6 +16,7 @@
 #include <linux/platform_data/x86/simatic-ipc-base.h>
 
 static struct gpiod_lookup_table *simatic_ipc_led_gpio_table;
+static struct gpiod_lookup_table *simatic_ipc_led_gpio_table_extra;
 
 static struct gpiod_lookup_table simatic_ipc_led_gpio_table_127e = {
 	.dev_id = "leds-gpio",
@@ -26,6 +27,13 @@ static struct gpiod_lookup_table simatic_ipc_led_gpio_table_127e = {
 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 58, NULL, 3, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 60, NULL, 4, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 51, NULL, 5, GPIO_ACTIVE_LOW),
+		{} /* Terminating entry */
+	},
+};
+
+static struct gpiod_lookup_table simatic_ipc_led_gpio_table_127e_extra = {
+	.dev_id = NULL, /* Filled during initialization */
+	.table = {
 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 56, NULL, 6, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 59, NULL, 7, GPIO_ACTIVE_HIGH),
 		{} /* Terminating entry */
@@ -41,10 +49,17 @@ static struct gpiod_lookup_table simatic_ipc_led_gpio_table_227g = {
 		GPIO_LOOKUP_IDX("gpio-f7188x-2", 3, NULL, 3, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX("gpio-f7188x-2", 4, NULL, 4, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX("gpio-f7188x-2", 5, NULL, 5, GPIO_ACTIVE_LOW),
+		{} /* Terminating entry */
+	},
+};
+
+static struct gpiod_lookup_table simatic_ipc_led_gpio_table_227g_extra = {
+	.dev_id = NULL, /* Filled during initialization */
+	.table = {
 		GPIO_LOOKUP_IDX("gpio-f7188x-3", 6, NULL, 6, GPIO_ACTIVE_HIGH),
 		GPIO_LOOKUP_IDX("gpio-f7188x-3", 7, NULL, 7, GPIO_ACTIVE_HIGH),
 		{} /* Terminating entry */
-	}
+	},
 };
 
 static const struct gpio_led simatic_ipc_gpio_leds[] = {
@@ -66,6 +81,7 @@ static struct platform_device *simatic_leds_pdev;
 static int simatic_ipc_leds_gpio_remove(struct platform_device *pdev)
 {
 	gpiod_remove_lookup_table(simatic_ipc_led_gpio_table);
+	gpiod_remove_lookup_table(simatic_ipc_led_gpio_table_extra);
 	platform_device_unregister(simatic_leds_pdev);
 
 	return 0;
@@ -74,6 +90,7 @@ static int simatic_ipc_leds_gpio_remove(struct platform_device *pdev)
 static int simatic_ipc_leds_gpio_probe(struct platform_device *pdev)
 {
 	const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
+	struct device *dev = &pdev->dev;
 	struct gpio_desc *gpiod;
 	int err;
 
@@ -82,12 +99,14 @@ static int simatic_ipc_leds_gpio_probe(struct platform_device *pdev)
 		if (!IS_ENABLED(CONFIG_PINCTRL_BROXTON))
 			return -ENODEV;
 		simatic_ipc_led_gpio_table = &simatic_ipc_led_gpio_table_127e;
+		simatic_ipc_led_gpio_table_extra = &simatic_ipc_led_gpio_table_127e_extra;
 		break;
 	case SIMATIC_IPC_DEVICE_227G:
 		if (!IS_ENABLED(CONFIG_GPIO_F7188X))
 			return -ENODEV;
 		request_module("gpio-f7188x");
 		simatic_ipc_led_gpio_table = &simatic_ipc_led_gpio_table_227g;
+		simatic_ipc_led_gpio_table_extra = &simatic_ipc_led_gpio_table_227g_extra;
 		break;
 	default:
 		return -ENODEV;
@@ -103,8 +122,11 @@ static int simatic_ipc_leds_gpio_probe(struct platform_device *pdev)
 		goto out;
 	}
 
+	simatic_ipc_led_gpio_table_extra->dev_id = dev_name(dev);
+	gpiod_add_lookup_table(simatic_ipc_led_gpio_table_extra);
+
 	/* PM_BIOS_BOOT_N */
-	gpiod = gpiod_get_index(&simatic_leds_pdev->dev, NULL, 6, GPIOD_OUT_LOW);
+	gpiod = gpiod_get_index(dev, NULL, 6, GPIOD_OUT_LOW);
 	if (IS_ERR(gpiod)) {
 		err = PTR_ERR(gpiod);
 		goto out;
@@ -112,7 +134,7 @@ static int simatic_ipc_leds_gpio_probe(struct platform_device *pdev)
 	gpiod_put(gpiod);
 
 	/* PM_WDT_OUT */
-	gpiod = gpiod_get_index(&simatic_leds_pdev->dev, NULL, 7, GPIOD_OUT_LOW);
+	gpiod = gpiod_get_index(dev, NULL, 7, GPIOD_OUT_LOW);
 	if (IS_ERR(gpiod)) {
 		err = PTR_ERR(gpiod);
 		goto out;
-- 
2.39.3