Attachment 139241 Details for Bug 100446 – nouveau_backlight.c working on msi gt73vr 6rf titan pro

nouveau_backlight.c working on msi gt73vr 6rf titan pro

nouveau_backlight.c-msigt73vr-working (text/plain), 8.94 KB, created by Geroge T on 2018-05-01 02:12:14 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Geroge T

Created: 2018-05-01 02:12:14 UTC

Size: 8.94 KB

patch

obsolete

>/*
> * Copyright (C) 2009 Red Hat <mjg@redhat.com>
> *
> * 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:
> *  Matthew Garrett <mjg@redhat.com>
> *
> * Register locations derived from NVClock by Roderick Colenbrander
> */
>
>#include <linux/apple-gmux.h>
>#include <linux/backlight.h>
>#include <linux/idr.h>
>
>#include "nouveau_drv.h"
>#include "nouveau_reg.h"
>#include "nouveau_encoder.h"
>
>static struct ida bl_ida;
>#define BL_NAME_SIZE 15 // 12 for name + 2 for digits + 1 for '\0'
>
>struct backlight_connector {
>	struct list_head head;
>	int id;
>};
>
>static bool
>nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE], struct backlight_connector
>		*connector)
>{
>	const int nb = ida_simple_get(&bl_ida, 0, 0, GFP_KERNEL);
>	if (nb < 0 || nb >= 100)
>		return false;
>	if (nb > 0)
>		snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight%d", nb);
>	else
>		snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight");
>	connector->id = nb;
>	return true;
>}
>
>static int
>nv40_get_intensity(struct backlight_device *bd)
>{
>	struct nouveau_drm *drm = bl_get_data(bd);
>	struct nvif_object *device = &drm->client.device.object;
>	int val = (nvif_rd32(device, NV40_PMC_BACKLIGHT) &
>				   NV40_PMC_BACKLIGHT_MASK) >> 16;
>
>	return val;
>}
>
>static int
>nv40_set_intensity(struct backlight_device *bd)
>{
>	struct nouveau_drm *drm = bl_get_data(bd);
>	struct nvif_object *device = &drm->client.device.object;
>	int val = bd->props.brightness;
>	int reg = nvif_rd32(device, NV40_PMC_BACKLIGHT);
>
>	nvif_wr32(device, NV40_PMC_BACKLIGHT,
>		 (val << 16) | (reg & ~NV40_PMC_BACKLIGHT_MASK));
>
>	return 0;
>}
>
>static const struct backlight_ops nv40_bl_ops = {
>	.options = BL_CORE_SUSPENDRESUME,
>	.get_brightness = nv40_get_intensity,
>	.update_status = nv40_set_intensity,
>};
>
>static int
>nv40_backlight_init(struct drm_connector *connector)
>{
>	struct nouveau_drm *drm = nouveau_drm(connector->dev);
>	struct nvif_object *device = &drm->client.device.object;
>	struct backlight_properties props;
>	struct backlight_device *bd;
>	struct backlight_connector bl_connector;
>	char backlight_name[BL_NAME_SIZE];
>
>	if (!(nvif_rd32(device, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK))
>		return 0;
>
>	memset(&props, 0, sizeof(struct backlight_properties));
>	props.type = BACKLIGHT_RAW;
>	props.max_brightness = 31;
>	if (!nouveau_get_backlight_name(backlight_name, &bl_connector)) {
>		NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n");
>		return 0;
>	}
>	bd = backlight_device_register(backlight_name , connector->kdev, drm,
>				       &nv40_bl_ops, &props);
>
>	if (IS_ERR(bd)) {
>		if (bl_connector.id > 0)
>			ida_simple_remove(&bl_ida, bl_connector.id);
>		return PTR_ERR(bd);
>	}
>	list_add(&bl_connector.head, &drm->bl_connectors);
>	drm->backlight = bd;
>	bd->props.brightness = nv40_get_intensity(bd);
>	backlight_update_status(bd);
>
>	return 0;
>}
>
>static int
>nv50_get_intensity(struct backlight_device *bd)
>{
>	struct nouveau_encoder *nv_encoder = bl_get_data(bd);
>	struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev);
>	struct nvif_object *device = &drm->client.device.object;
>	int or = ffs(nv_encoder->dcb->or) - 1;
>	u32 div = 1025;
>	u32 val;
>
>	val  = nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(or));
>	val &= NV50_PDISP_SOR_PWM_CTL_VAL;
>	return ((val * 100) + (div / 2)) / div;
>}
>
>static int
>nv50_set_intensity(struct backlight_device *bd)
>{
>	struct nouveau_encoder *nv_encoder = bl_get_data(bd);
>	struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev);
>	struct nvif_object *device = &drm->client.device.object;
>	int or = ffs(nv_encoder->dcb->or) - 1;
>	u32 div = 1025;
>	u32 val = (bd->props.brightness * div) / 100;
>
>	nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
>			NV50_PDISP_SOR_PWM_CTL_NEW | val);
>	return 0;
>}
>
>static const struct backlight_ops nv50_bl_ops = {
>	.options = BL_CORE_SUSPENDRESUME,
>	.get_brightness = nv50_get_intensity,
>	.update_status = nv50_set_intensity,
>};
>
>static int
>nva3_get_intensity(struct backlight_device *bd)
>{
>	struct nouveau_encoder *nv_encoder = bl_get_data(bd);
>	struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev);
>	struct nvif_object *device = &drm->client.device.object;
>	int or = ffs(nv_encoder->dcb->or) - 1;
>	u32 div, val;
>
>	div  = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
>	val  = nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(or));
>	val &= NVA3_PDISP_SOR_PWM_CTL_VAL;
>	if (div && div >= val)
>		return ((val * 100) + (div / 2)) / div;
>
>	return 100;
>}
>
>static int
>nva3_set_intensity(struct backlight_device *bd)
>{
>	struct nouveau_encoder *nv_encoder = bl_get_data(bd);
>	struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev);
>	struct nvif_object *device = &drm->client.device.object;
>	int or = ffs(nv_encoder->dcb->or) - 1;
>	u32 div, val;
>
>	div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
>	val = (bd->props.brightness * div) / 100;
>	if (div) {
>		nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or), val |
>				NV50_PDISP_SOR_PWM_CTL_NEW |
>				NVA3_PDISP_SOR_PWM_CTL_UNK);
>		return 0;
>	}
>
>	return -EINVAL;
>}
>
>static const struct backlight_ops nva3_bl_ops = {
>	.options = BL_CORE_SUSPENDRESUME,
>	.get_brightness = nva3_get_intensity,
>	.update_status = nva3_set_intensity,
>};
>
>static int
>nv50_backlight_init(struct drm_connector *connector)
>{
>	struct nouveau_drm *drm = nouveau_drm(connector->dev);
>	struct nvif_object *device = &drm->client.device.object;
>	struct nouveau_encoder *nv_encoder;
>	struct backlight_properties props;
>	struct backlight_device *bd;
>	const struct backlight_ops *ops;
>	struct backlight_connector bl_connector;
>	char backlight_name[BL_NAME_SIZE];
>
>	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
>	if (!nv_encoder) {
>		nv_encoder = find_encoder(connector, DCB_OUTPUT_DP);
>		if (!nv_encoder)
>			return -ENODEV;
>	}
>
>	if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(ffs(nv_encoder->dcb->or) - 1)))
>		return 0;
>
>	if (drm->client.device.info.chipset <= 0xa0 ||
>	    drm->client.device.info.chipset == 0xaa ||
>	    drm->client.device.info.chipset == 0xac)
>		ops = &nv50_bl_ops;
>	else
>		ops = &nva3_bl_ops;
>
>	memset(&props, 0, sizeof(struct backlight_properties));
>	props.type = BACKLIGHT_RAW;
>	props.max_brightness = 100;
>	if (!nouveau_get_backlight_name(backlight_name, &bl_connector)) {
>		NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n");
>		return 0;
>	}
>	bd = backlight_device_register(backlight_name , connector->kdev,
>				       nv_encoder, ops, &props);
>
>	if (IS_ERR(bd)) {
>		if (bl_connector.id > 0)
>			ida_simple_remove(&bl_ida, bl_connector.id);
>		return PTR_ERR(bd);
>	}
>
>	list_add(&bl_connector.head, &drm->bl_connectors);
>	drm->backlight = bd;
>	bd->props.brightness = bd->ops->get_brightness(bd);
>	backlight_update_status(bd);
>	return 0;
>}
>
>int
>nouveau_backlight_init(struct drm_device *dev)
>{
>	struct nouveau_drm *drm = nouveau_drm(dev);
>	struct nvif_device *device = &drm->client.device;
>	struct drm_connector *connector;
>
>	INIT_LIST_HEAD(&drm->bl_connectors);
>
>	if (apple_gmux_present()) {
>		NV_INFO(drm, "Apple GMUX detected: not registering Nouveau backlight interface\n");
>		return 0;
>	}
>
>	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
>		if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
>		    connector->connector_type != DRM_MODE_CONNECTOR_eDP)
>			continue;
>
>		switch (device->info.family) {
>		case NV_DEVICE_INFO_V0_CURIE:
>			return nv40_backlight_init(connector);
>		case NV_DEVICE_INFO_V0_TESLA:
>		case NV_DEVICE_INFO_V0_FERMI:
>		case NV_DEVICE_INFO_V0_KEPLER:
>		case NV_DEVICE_INFO_V0_MAXWELL:
>		case NV_DEVICE_INFO_V0_PASCAL:
>			return nv50_backlight_init(connector);
>		default:
>			break;
>		}
>	}
>
>
>	return 0;
>}
>
>void
>nouveau_backlight_exit(struct drm_device *dev)
>{
>	struct nouveau_drm *drm = nouveau_drm(dev);
>	struct backlight_connector *connector;
>
>	list_for_each_entry(connector, &drm->bl_connectors, head) {
>		if (connector->id >= 0)
>			ida_simple_remove(&bl_ida, connector->id);
>	}
>
>	if (drm->backlight) {
>		backlight_device_unregister(drm->backlight);
>		drm->backlight = NULL;
>	}
>}
>
>void
>nouveau_backlight_ctor(void)
>{
>	ida_init(&bl_ida);
>}
>
>void
>nouveau_backlight_dtor(void)
>{
>	ida_destroy(&bl_ida);
>}

Actions: View

Attachments on bug 100446: 130784 | 138646 | 139241

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.