From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/gpu/drm/nouveau/nouveau_backlight.c | 226 ++++++++++++++++++++++++++++----------------------------
1 files changed, 112 insertions(+), 114 deletions(-)
diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_backlight.c b/kernel/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 6dd72bc..f2f3280 100644
--- a/kernel/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/kernel/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -37,37 +37,40 @@
#include "nouveau_drv.h"
#include "nouveau_reg.h"
#include "nouveau_encoder.h"
+#include "nouveau_connector.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;
+struct nouveau_backlight {
+ struct backlight_device *dev;
int id;
};
static bool
-nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE], struct backlight_connector
- *connector)
+nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE],
+ struct nouveau_backlight *bl)
{
- const int nb = ida_simple_get(&bl_ida, 0, 0, GFP_KERNEL);
- if (nb < 0 || nb >= 100)
+ const int nb = ida_alloc_max(&bl_ida, 99, GFP_KERNEL);
+
+ if (nb < 0)
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;
+ bl->id = nb;
return true;
}
static int
nv40_get_intensity(struct backlight_device *bd)
{
- struct nouveau_drm *drm = bl_get_data(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 val = (nvif_rd32(device, NV40_PMC_BACKLIGHT) &
- NV40_PMC_BACKLIGHT_MASK) >> 16;
+ NV40_PMC_BACKLIGHT_MASK) >> 16;
return val;
}
@@ -75,13 +78,14 @@
static int
nv40_set_intensity(struct backlight_device *bd)
{
- struct nouveau_drm *drm = bl_get_data(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 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));
+ (val << 16) | (reg & ~NV40_PMC_BACKLIGHT_MASK));
return 0;
}
@@ -93,38 +97,19 @@
};
static int
-nv40_backlight_init(struct drm_connector *connector)
+nv40_backlight_init(struct nouveau_encoder *encoder,
+ struct backlight_properties *props,
+ const struct backlight_ops **ops)
{
- struct nouveau_drm *drm = nouveau_drm(connector->dev);
+ struct nouveau_drm *drm = nouveau_drm(encoder->base.base.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;
+ return -ENODEV;
- 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);
-
+ props->type = BACKLIGHT_RAW;
+ props->max_brightness = 31;
+ *ops = &nv40_bl_ops;
return 0;
}
@@ -154,7 +139,7 @@
u32 val = (bd->props.brightness * div) / 100;
nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
- NV50_PDISP_SOR_PWM_CTL_NEW | val);
+ NV50_PDISP_SOR_PWM_CTL_NEW | val);
return 0;
}
@@ -194,9 +179,10 @@
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);
+ nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
+ val |
+ NV50_PDISP_SOR_PWM_CTL_NEW |
+ NVA3_PDISP_SOR_PWM_CTL_UNK);
return 0;
}
@@ -210,110 +196,122 @@
};
static int
-nv50_backlight_init(struct drm_connector *connector)
+nv50_backlight_init(struct nouveau_encoder *nv_encoder,
+ struct backlight_properties *props,
+ const struct backlight_ops **ops)
{
- struct nouveau_drm *drm = nouveau_drm(connector->dev);
+ struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.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;
+ return -ENODEV;
if (drm->client.device.info.chipset <= 0xa0 ||
drm->client.device.info.chipset == 0xaa ||
drm->client.device.info.chipset == 0xac)
- ops = &nv50_bl_ops;
+ *ops = &nv50_bl_ops;
else
- ops = &nva3_bl_ops;
+ *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);
+ props->type = BACKLIGHT_RAW;
+ props->max_brightness = 100;
- 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)
+nouveau_backlight_init(struct drm_connector *connector)
{
- struct nouveau_drm *drm = nouveau_drm(dev);
+ struct nouveau_drm *drm = nouveau_drm(connector->dev);
+ struct nouveau_backlight *bl;
+ struct nouveau_encoder *nv_encoder = NULL;
struct nvif_device *device = &drm->client.device;
- struct drm_connector *connector;
- struct drm_connector_list_iter conn_iter;
-
- INIT_LIST_HEAD(&drm->bl_connectors);
+ char backlight_name[BL_NAME_SIZE];
+ struct backlight_properties props = {0};
+ const struct backlight_ops *ops;
+ int ret;
if (apple_gmux_present()) {
- NV_INFO(drm, "Apple GMUX detected: not registering Nouveau backlight interface\n");
+ NV_INFO_ONCE(drm, "Apple GMUX detected: not registering Nouveau backlight interface\n");
return 0;
}
- drm_connector_list_iter_begin(dev, &conn_iter);
- drm_for_each_connector_iter(connector, &conn_iter) {
- if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
- connector->connector_type != DRM_MODE_CONNECTOR_eDP)
- continue;
+ if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
+ nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
+ else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
+ nv_encoder = find_encoder(connector, DCB_OUTPUT_DP);
+ else
+ return 0;
- 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:
- return nv50_backlight_init(connector);
- default:
- break;
- }
+ if (!nv_encoder)
+ return 0;
+
+ switch (device->info.family) {
+ case NV_DEVICE_INFO_V0_CURIE:
+ ret = nv40_backlight_init(nv_encoder, &props, &ops);
+ break;
+ 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:
+ case NV_DEVICE_INFO_V0_VOLTA:
+ case NV_DEVICE_INFO_V0_TURING:
+ ret = nv50_backlight_init(nv_encoder, &props, &ops);
+ break;
+ default:
+ return 0;
}
- drm_connector_list_iter_end(&conn_iter);
+
+ if (ret == -ENODEV)
+ return 0;
+ else if (ret)
+ return ret;
+
+ bl = kzalloc(sizeof(*bl), GFP_KERNEL);
+ if (!bl)
+ return -ENOMEM;
+
+ if (!nouveau_get_backlight_name(backlight_name, bl)) {
+ NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n");
+ goto fail_alloc;
+ }
+
+ bl->dev = backlight_device_register(backlight_name, connector->kdev,
+ nv_encoder, ops, &props);
+ if (IS_ERR(bl->dev)) {
+ if (bl->id >= 0)
+ ida_free(&bl_ida, bl->id);
+ ret = PTR_ERR(bl->dev);
+ goto fail_alloc;
+ }
+
+ nouveau_connector(connector)->backlight = bl;
+ bl->dev->props.brightness = bl->dev->ops->get_brightness(bl->dev);
+ backlight_update_status(bl->dev);
return 0;
+
+fail_alloc:
+ kfree(bl);
+ return ret;
}
void
-nouveau_backlight_exit(struct drm_device *dev)
+nouveau_backlight_fini(struct drm_connector *connector)
{
- struct nouveau_drm *drm = nouveau_drm(dev);
- struct backlight_connector *connector;
+ struct nouveau_connector *nv_conn = nouveau_connector(connector);
+ struct nouveau_backlight *bl = nv_conn->backlight;
- list_for_each_entry(connector, &drm->bl_connectors, head) {
- if (connector->id >= 0)
- ida_simple_remove(&bl_ida, connector->id);
- }
+ if (!bl)
+ return;
- if (drm->backlight) {
- backlight_device_unregister(drm->backlight);
- drm->backlight = NULL;
- }
+ if (bl->id >= 0)
+ ida_free(&bl_ida, bl->id);
+
+ backlight_device_unregister(bl->dev);
+ nv_conn->backlight = NULL;
+ kfree(bl);
}
void
--
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