v2:
- guard LED framework calls with ifdef CONFIG_LEDS_CLASS
Signed-off-by: Martin Peres <martin.pe...@free.fr>
---
For real this time! Sorry for the noise
drm/nouveau/Kbuild | 1 +
drm/nouveau/include/nvkm/subdev/bios/gpio.h | 1 +
drm/nouveau/nouveau_drm.c | 7 ++
drm/nouveau/nouveau_drv.h | 3 +
drm/nouveau/nouveau_led.c | 140 ++++++++++++++++++++++++++++
drm/nouveau/nouveau_led.h | 48 ++++++++++
6 files changed, 200 insertions(+)
create mode 100644 drm/nouveau/nouveau_led.c
create mode 100644 drm/nouveau/nouveau_led.h
diff --git a/drm/nouveau/Kbuild b/drm/nouveau/Kbuild
index 2527bf4..312bca9 100644
--- a/drm/nouveau/Kbuild
+++ b/drm/nouveau/Kbuild
@@ -22,6 +22,7 @@ nouveau-$(CONFIG_DEBUG_FS) += nouveau_debugfs.o
nouveau-y += nouveau_drm.o
nouveau-y += nouveau_hwmon.o
nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o
+nouveau-y += nouveau_led.o
nouveau-y += nouveau_nvif.o
nouveau-$(CONFIG_NOUVEAU_PLATFORM_DRIVER) += nouveau_platform.o
nouveau-y += nouveau_usif.o # userspace <-> nvif
diff --git a/drm/nouveau/include/nvkm/subdev/bios/gpio.h
b/drm/nouveau/include/nvkm/subdev/bios/gpio.h
index a47d46d..b7a54e6 100644
--- a/drm/nouveau/include/nvkm/subdev/bios/gpio.h
+++ b/drm/nouveau/include/nvkm/subdev/bios/gpio.h
@@ -6,6 +6,7 @@ enum dcb_gpio_func_name {
DCB_GPIO_TVDAC1 = 0x2d,
DCB_GPIO_FAN = 0x09,
DCB_GPIO_FAN_SENSE = 0x3d,
+ DCB_GPIO_LOGO_LED_PWM = 0x84,
DCB_GPIO_UNUSED = 0xff,
DCB_GPIO_VID0 = 0x04,
DCB_GPIO_VID1 = 0x05,
diff --git a/drm/nouveau/nouveau_drm.c b/drm/nouveau/nouveau_drm.c
index 66c1280..0f16652 100644
--- a/drm/nouveau/nouveau_drm.c
+++ b/drm/nouveau/nouveau_drm.c
@@ -47,6 +47,7 @@
#include "nouveau_ttm.h"
#include "nouveau_gem.h"
#include "nouveau_vga.h"
+#include "nouveau_led.h"
#include "nouveau_hwmon.h"
#include "nouveau_acpi.h"
#include "nouveau_bios.h"
@@ -475,6 +476,7 @@ nouveau_drm_load(struct drm_device *dev, unsigned long
flags)
nouveau_hwmon_init(dev);
nouveau_accel_init(drm);
nouveau_fbcon_init(dev);
+ nouveau_led_init(dev);
if (nouveau_runtime_pm != 0) {
pm_runtime_use_autosuspend(dev->dev);
@@ -510,6 +512,7 @@ nouveau_drm_unload(struct drm_device *dev)
pm_runtime_forbid(dev->dev);
}
+ nouveau_led_fini(dev);
nouveau_fbcon_fini(dev);
nouveau_accel_fini(drm);
nouveau_hwmon_fini(dev);
@@ -561,6 +564,8 @@ nouveau_do_suspend(struct drm_device *dev, bool runtime)
struct nouveau_cli *cli;
int ret;
+ nouveau_led_suspend(dev);
+
if (dev->mode_config.num_crtc) {
NV_INFO(drm, "suspending console...\n");
nouveau_fbcon_set_suspend(dev, 1);
@@ -649,6 +654,8 @@ nouveau_do_resume(struct drm_device *dev, bool runtime)
nouveau_fbcon_set_suspend(dev, 0);
}
+ nouveau_led_resume(dev);
+
return 0;
}
diff --git a/drm/nouveau/nouveau_drv.h b/drm/nouveau/nouveau_drv.h
index 822a021..c0e2b32 100644
--- a/drm/nouveau/nouveau_drv.h
+++ b/drm/nouveau/nouveau_drv.h
@@ -166,6 +166,9 @@ struct nouveau_drm {
struct nouveau_hwmon *hwmon;
struct nouveau_debugfs *debugfs;
+ /* led management */
+ struct nouveau_led *led;
+
/* display power reference */
bool have_disp_power_ref;
diff --git a/drm/nouveau/nouveau_led.c b/drm/nouveau/nouveau_led.c
new file mode 100644
index 0000000..5c19efe
--- /dev/null
+++ b/drm/nouveau/nouveau_led.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2016 Martin Peres
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+/*
+ * Authors:
+ * Martin Peres <martin.pe...@free.fr>
+ */
+
+#include <linux/leds.h>
+
+#include "nouveau_led.h"
+#include <nvkm/subdev/gpio.h>
+
+#ifdef CONFIG_LEDS_CLASS
+static enum led_brightness
+nouveau_led_get_brightness(struct led_classdev *led)
+{
+ struct drm_device *drm_dev = container_of(led, struct nouveau_led,
led)->dev;
+ struct nouveau_drm *drm = nouveau_drm(drm_dev);
+ struct nvif_object *device = &drm->device.object;
+ u32 div, duty;
+
+ div = nvif_rd32(device, 0x61c880) & 0x00ffffff;
+ duty = nvif_rd32(device, 0x61c884) & 0x00ffffff;
+
+ return duty * LED_FULL / div;
+}
+
+static void
+nouveau_led_set_brightness(struct led_classdev *led, enum led_brightness value)
+{
+ struct drm_device *drm_dev = container_of(led, struct nouveau_led,
led)->dev;
+ struct nouveau_drm *drm = nouveau_drm(drm_dev);
+ struct nvif_object *device = &drm->device.object;
+
+ u32 input_clk = 27e6; /* PDISPLAY.SOR[1].PWM is connected to the
crystal */
+ u32 freq = 100; /* this is what nvidia uses and it should be
good-enough */
+ u32 div, duty;
+
+ div = input_clk / freq;
+ duty = value * div / LED_FULL;
+
+ /* for now, this is safe to directly poke those registers because:
+ * - A: nvidia never puts the logo led to any other PWM controler
+ * than PDISPLAY.SOR[1].PWM.
+ * - B: nouveau does not touch these registers anywhere else
+ */
+ nvif_wr32(device, 0x61c880, div);
+ nvif_wr32(device, 0x61c884, 0xc0000000 | duty);
+}
+#endif
+
+int
+nouveau_led_init(struct drm_device *dev)
+{
+#ifdef CONFIG_LEDS_CLASS
+ struct nouveau_drm *drm = nouveau_drm(dev);
+ struct nvkm_gpio *gpio = nvxx_gpio(&drm->device);
+ struct dcb_gpio_func logo_led;
+ int ret;
+
+ /* check that there is a GPIO controlling the logo LED */
+ if (nvkm_gpio_find(gpio, 0, DCB_GPIO_LOGO_LED_PWM, 0xff, &logo_led))
+ return 0;
+
+ drm->led = kzalloc(sizeof(*drm->led), GFP_KERNEL);
+ if (!drm->led)
+ return -ENOMEM;
+ drm->led->dev = dev;
+
+ drm->led->led.name = "nvidia-logo";
+ drm->led->led.max_brightness = 255;
+ drm->led->led.brightness_get = nouveau_led_get_brightness;
+ drm->led->led.brightness_set = nouveau_led_set_brightness;
+
+ ret = led_classdev_register(dev->dev, &drm->led->led);
+ if (ret) {
+ kfree(drm->led);
+ return ret;
+ }
+#endif
+
+ return 0;
+}
+
+void
+nouveau_led_suspend(struct drm_device *dev)
+{
+#ifdef CONFIG_LEDS_CLASS
+ struct nouveau_drm *drm = nouveau_drm(dev);
+
+ led_classdev_suspend(&drm->led->led);
+#endif
+}
+
+void
+nouveau_led_resume(struct drm_device *dev)
+{
+#ifdef CONFIG_LEDS_CLASS
+ struct nouveau_drm *drm = nouveau_drm(dev);
+
+ led_classdev_resume(&drm->led->led);
+#endif
+}
+
+void
+nouveau_led_fini(struct drm_device *dev)
+{
+#ifdef CONFIG_LEDS_CLASS
+ struct nouveau_drm *drm = nouveau_drm(dev);
+
+ if (drm->led) {
+ led_classdev_unregister(&drm->led->led);
+ kfree(drm->led);
+ drm->led = NULL;
+ }
+#endif
+}
diff --git a/drm/nouveau/nouveau_led.h b/drm/nouveau/nouveau_led.h
new file mode 100644
index 0000000..6c986ba
--- /dev/null
+++ b/drm/nouveau/nouveau_led.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2015 Martin Peres
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Martin Peres <martin.pe...@free.fr>
+ */
+
+#ifndef __NOUVEAU_LED_H__
+#define __NOUVEAU_LED_H__
+
+struct led_classdev;
+
+struct nouveau_led {
+ struct drm_device *dev;
+
+ struct led_classdev led;
+};
+
+static inline struct nouveau_led *
+nouveau_led(struct drm_device *dev)
+{
+ return nouveau_drm(dev)->led;
+}
+
+/* nouveau_led.c */
+int nouveau_led_init(struct drm_device *dev);
+void nouveau_led_suspend(struct drm_device *dev);
+void nouveau_led_resume(struct drm_device *dev);
+void nouveau_led_fini(struct drm_device *dev);
+
+#endif
--
2.8.0
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