diff options
Diffstat (limited to 'nixos/modules/kernel-patches/0002-leds-turris-omnia-support-HW-controlled-mode-via-pri.patch')
| -rw-r--r-- | nixos/modules/kernel-patches/0002-leds-turris-omnia-support-HW-controlled-mode-via-pri.patch | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/nixos/modules/kernel-patches/0002-leds-turris-omnia-support-HW-controlled-mode-via-pri.patch b/nixos/modules/kernel-patches/0002-leds-turris-omnia-support-HW-controlled-mode-via-pri.patch deleted file mode 100644 index 1bd6acc..0000000 --- a/nixos/modules/kernel-patches/0002-leds-turris-omnia-support-HW-controlled-mode-via-pri.patch +++ /dev/null @@ -1,125 +0,0 @@ -From 2760691208ad6ce37503007c0f3596532fd813e3 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <kabel@kernel.org> -Date: Mon, 4 Jul 2022 12:59:53 +0200 -Subject: [PATCH 02/10] leds: turris-omnia: support HW controlled mode via - private trigger -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Add support for enabling MCU controlled mode of the Turris Omnia LEDs -via a LED private trigger called "omnia-mcu". - -When in MCU controlled mode, the user can still set LED color, but the -blinking is done by MCU, which does different things for various LEDs: -- WAN LED is blinked according to the LED[0] pin of the WAN PHY -- LAN LEDs are blinked according to the LED[0] output of corresponding - port of the LAN switch -- PCIe LEDs are blinked according to the logical OR of the MiniPCIe port - LED pins - -For a long time I wanted to actually do this differently: I wanted to -make the netdev trigger to transparently offload the blinking to the HW -if user set compatible settings for the netdev trigger. -There was some work on this, and hopefully we will be able to complete -it sometime, but since there are various complications, it will probably -not be soon. - -In the meantime let's support HW controlled mode via this private LED -trigger. If, in the future, we manage to complete the netdev trigger -offloading, we can still keep this private trigger for backwards -compatiblity, if needed. - -We also set "omnia-mcu" to cdev->default_trigger, so that the MCU keeps -control until the user first wants to take over it. If a different -default trigger is specified in device-tree via the -`linux,default-trigger` property, LED class will overwrite -cdev->default_trigger, and so the DT property will be respected. - -Signed-off-by: Marek Behún <kabel@kernel.org> ---- - drivers/leds/Kconfig | 1 + - drivers/leds/leds-turris-omnia.c | 41 ++++++++++++++++++++++++++++++++ - 2 files changed, 42 insertions(+) - -diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig -index a49979f41eee..bc148320416d 100644 ---- a/drivers/leds/Kconfig -+++ b/drivers/leds/Kconfig -@@ -163,6 +163,7 @@ config LEDS_TURRIS_OMNIA - depends on I2C - depends on MACH_ARMADA_38X || COMPILE_TEST - depends on OF -+ select LEDS_TRIGGERS - help - This option enables basic support for the LEDs found on the front - side of CZ.NIC's Turris Omnia router. There are 12 RGB LEDs on the -diff --git a/drivers/leds/leds-turris-omnia.c b/drivers/leds/leds-turris-omnia.c -index 1adfed1c0619..c2dfb22d3065 100644 ---- a/drivers/leds/leds-turris-omnia.c -+++ b/drivers/leds/leds-turris-omnia.c -@@ -41,6 +41,39 @@ struct omnia_leds { - struct omnia_led leds[]; - }; - -+static struct led_hw_trigger_type omnia_hw_trigger_type; -+ -+static int omnia_hwtrig_activate(struct led_classdev *cdev) -+{ -+ struct omnia_leds *leds = dev_get_drvdata(cdev->dev->parent); -+ struct omnia_led *led = to_omnia_led(lcdev_to_mccdev(cdev)); -+ -+ /* put the LED into MCU controlled mode */ -+ return i2c_smbus_write_byte_data(leds->client, CMD_LED_MODE, -+ CMD_LED_MODE_LED(led->reg)); -+} -+ -+static void omnia_hwtrig_deactivate(struct led_classdev *cdev) -+{ -+ struct omnia_leds *leds = dev_get_drvdata(cdev->dev->parent); -+ struct omnia_led *led = to_omnia_led(lcdev_to_mccdev(cdev)); -+ int ret; -+ -+ /* put the LED into software mode */ -+ ret = i2c_smbus_write_byte_data(leds->client, CMD_LED_MODE, -+ CMD_LED_MODE_LED(led->reg) | -+ CMD_LED_MODE_USER); -+ if (ret < 0) -+ dev_err(cdev->dev, "Cannot put to software mode: %i\n", ret); -+} -+ -+static struct led_trigger omnia_hw_trigger = { -+ .name = "omnia-mcu", -+ .activate = omnia_hwtrig_activate, -+ .deactivate = omnia_hwtrig_deactivate, -+ .trigger_type = &omnia_hw_trigger_type, -+}; -+ - static int omnia_led_brightness_set_blocking(struct led_classdev *cdev, - enum led_brightness brightness) - { -@@ -112,6 +145,8 @@ static int omnia_led_register(struct i2c_client *client, struct omnia_led *led, - cdev = &led->mc_cdev.led_cdev; - cdev->max_brightness = 255; - cdev->brightness_set_blocking = omnia_led_brightness_set_blocking; -+ cdev->trigger_type = &omnia_hw_trigger_type; -+ cdev->default_trigger = omnia_hw_trigger.name; - - /* put the LED into software mode */ - ret = i2c_smbus_write_byte_data(client, CMD_LED_MODE, -@@ -228,6 +263,12 @@ static int omnia_leds_probe(struct i2c_client *client, - - mutex_init(&leds->lock); - -+ ret = devm_led_trigger_register(dev, &omnia_hw_trigger); -+ if (ret < 0) { -+ dev_err(dev, "Cannot register private LED trigger: %d\n", ret); -+ return ret; -+ } -+ - led = &leds->leds[0]; - for_each_available_child_of_node(np, child) { - ret = omnia_led_register(client, led, child); --- -2.37.2 - |