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A few fixes for the next merge window, with some build fixes for anx7625 

and lt8912b bridges, incorrect error handling for lt8912b and TTM, and
 one fix for TTM page limit accounting.
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Merge tag 'drm-misc-next-fixes-2021-04-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

A few fixes for the next merge window, with some build fixes for anx7625
and lt8912b bridges, incorrect error handling for lt8912b and TTM, and
one fix for TTM page limit accounting.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210422163329.dvbuwre3akwdmzjt@gilmour
This commit is contained in:
Dave Airlie 2021-04-23 12:56:21 +10:00
parent af8352f1ff a4394b6d0a
commit a1a1ca70de
4 changed files with 40 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/bridge/Kconfig
View File

@ -66,6 +66,7 @@ config DRM_LONTIUM_LT8912B
depends on OF
select DRM_PANEL_BRIDGE
select DRM_KMS_HELPER
select DRM_MIPI_DSI
select REGMAP_I2C
help
Driver for Lontium LT8912B DSI to HDMI bridge
@ -81,6 +82,7 @@ config DRM_LONTIUM_LT9611
depends on OF
select DRM_PANEL_BRIDGE
select DRM_KMS_HELPER
select DRM_MIPI_DSI
select REGMAP_I2C
help
Driver for Lontium LT9611 DSI to HDMI bridge
@ -94,6 +96,7 @@ config DRM_LONTIUM_LT9611UXC
depends on OF
select DRM_PANEL_BRIDGE
select DRM_KMS_HELPER
select DRM_MIPI_DSI
select REGMAP_I2C
help
Driver for Lontium LT9611UXC DSI to HDMI bridge

1
drivers/gpu/drm/bridge/analogix/Kconfig
View File

@ -30,6 +30,7 @@ config DRM_ANALOGIX_ANX7625
tristate "Analogix Anx7625 MIPI to DP interface support"
depends on DRM
depends on OF
select DRM_MIPI_DSI
help
ANX7625 is an ultra-low power 4K mobile HD transmitter
designed for portable devices. It converts MIPI/DPI to

32
drivers/gpu/drm/bridge/lontium-lt8912b.c
View File

@ -622,7 +622,8 @@ static int lt8912_parse_dt(struct lt8912 *lt)
{
struct gpio_desc *gp_reset;
struct device *dev = lt->dev;
int ret = 0;
int ret;
int data_lanes;
struct device_node *port_node;
struct device_node *endpoint;
@ -636,19 +637,21 @@ static int lt8912_parse_dt(struct lt8912 *lt)
lt->gp_reset = gp_reset;
endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1);
if (IS_ERR(endpoint)) {
ret = PTR_ERR(endpoint);
goto end;
}
if (!endpoint)
return -ENODEV;
lt->data_lanes = of_property_count_u32_elems(endpoint, "data-lanes");
data_lanes = of_property_count_u32_elems(endpoint, "data-lanes");
of_node_put(endpoint);
if (data_lanes < 0) {
dev_err(lt->dev, "%s: Bad data-lanes property\n", __func__);
return data_lanes;
}
lt->data_lanes = data_lanes;
lt->host_node = of_graph_get_remote_node(dev->of_node, 0, -1);
if (!lt->host_node) {
dev_err(lt->dev, "%s: Failed to get remote port\n", __func__);
ret = -ENODEV;
goto end;
return -ENODEV;
}
port_node = of_graph_get_remote_node(dev->of_node, 1, -1);
@ -659,24 +662,23 @@ static int lt8912_parse_dt(struct lt8912 *lt)
}
lt->hdmi_port = of_drm_find_bridge(port_node);
if (IS_ERR(lt->hdmi_port)) {
if (!lt->hdmi_port) {
dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__);
ret = PTR_ERR(lt->hdmi_port);
of_node_put(lt->host_node);
goto end;
ret = -ENODEV;
goto err_free_host_node;
}
if (!of_device_is_compatible(port_node, "hdmi-connector")) {
dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__);
ret = -EINVAL;
goto err_free_host_node;
}
of_node_put(port_node);
end:
return ret;
return 0;
err_free_host_node:
of_node_put(port_node);
of_node_put(lt->host_node);
return ret;
}

29
drivers/gpu/drm/ttm/ttm_tt.c
View File

@ -317,16 +317,19 @@ int ttm_tt_populate(struct ttm_device *bdev,
if (ttm_tt_is_populated(ttm))
return 0;
atomic_long_add(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_add(ttm->num_pages, &ttm_dma32_pages_allocated);
if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
atomic_long_add(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_add(ttm->num_pages,
&ttm_dma32_pages_allocated);
}
while (atomic_long_read(&ttm_pages_allocated) > ttm_pages_limit ||
atomic_long_read(&ttm_dma32_pages_allocated) >
ttm_dma32_pages_limit) {
ret = ttm_global_swapout(ctx, GFP_KERNEL);
if (ret)
if (ret < 0)
goto error;
}
@ -350,9 +353,12 @@ int ttm_tt_populate(struct ttm_device *bdev,
return 0;
error:
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages, &ttm_dma32_pages_allocated);
if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages,
&ttm_dma32_pages_allocated);
}
return ret;
}
EXPORT_SYMBOL(ttm_tt_populate);
@ -382,9 +388,12 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm)
else
ttm_pool_free(&bdev->pool, ttm);
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages, &ttm_dma32_pages_allocated);
if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages,
&ttm_dma32_pages_allocated);
}
ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;
}