xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/bridge: analogix_dp: Split bind() into probe() and real bind()

Browse Source 
Analogix_dp driver acquires all its resources in the ->bind() callback,
what is a bit against the component driver based approach, where the
driver initialization is split into a probe(), where all resources are
gathered, and a bind(), where all objects are created and a compound
driver is initialized.

Extract all the resource related operations to analogix_dp_probe() and
analogix_dp_remove(), then call them before/after registration of the
device components from the main Exynos DP and Rockchip DP drivers. Also
move the plat_data initialization to the probe() to make it available for
the analogix_dp_probe() function.

This fixes the multiple calls to the bind() of the DRM compound driver
when the DP PHY driver is not yet loaded/probed:

[drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations
exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops [exynosdrm])
exynos-drm exynos-drm: bound 14450000.mixer (ops mixer_component_ops [exynosdrm])
exynos-dp 145b0000.dp-controller: no DP phy configured
exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops [exynosdrm]): -517
exynos-drm exynos-drm: master bind failed: -517
...
[drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations
exynos-drm exynos-drm: bound 14400000.fimd (ops hdmi_enable [exynosdrm])
exynos-drm exynos-drm: bound 14450000.mixer (ops hdmi_enable [exynosdrm])
exynos-drm exynos-drm: bound 145b0000.dp-controller (ops hdmi_enable [exynosdrm])
exynos-drm exynos-drm: bound 14530000.hdmi (ops hdmi_enable [exynosdrm])
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
Console: switching to colour frame buffer device 170x48
exynos-drm exynos-drm: fb0: exynosdrmfb frame buffer device
[drm] Initialized exynos 1.1.0 20180330 for exynos-drm on minor 1
...

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200310103427.26048-1-m.szyprowski@samsung.com
(cherry picked from commit 83a196773b)
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Marek Szyprowski
2020-03-10 11:34:27 +01:00
committed by Maxime Ripard
parent b2ecb89c27
commit 152cce0006
4 changed files with 61 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
View File

@@ -325,15 +325,9 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
void *data)
{
struct rockchip_dp_device *dp = dev_get_drvdata(dev);
const struct rockchip_dp_chip_data *dp_data;
struct drm_device *drm_dev = data;
int ret;
dp_data = of_device_get_match_data(dev);
if (!dp_data)
return -ENODEV;
dp->data = dp_data;
dp->drm_dev = drm_dev;
ret = rockchip_dp_drm_create_encoder(dp);
@@ -344,16 +338,9 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
dp->plat_data.encoder = &dp->encoder;
dp->plat_data.dev_type = dp->data->chip_type;
dp->plat_data.power_on_start = rockchip_dp_poweron_start;
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
if (IS_ERR(dp->adp)) {
ret = PTR_ERR(dp->adp);
ret = analogix_dp_bind(dp->adp, drm_dev);
if (ret)
goto err_cleanup_encoder;
}
return 0;
err_cleanup_encoder:
@@ -368,8 +355,6 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master,
analogix_dp_unbind(dp->adp);
dp->encoder.funcs->destroy(&dp->encoder);
dp->adp = ERR_PTR(-ENODEV);
}
static const struct component_ops rockchip_dp_component_ops = {
@@ -380,10 +365,15 @@ static const struct component_ops rockchip_dp_component_ops = {
static int rockchip_dp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct rockchip_dp_chip_data *dp_data;
struct drm_panel *panel = NULL;
struct rockchip_dp_device *dp;
int ret;
dp_data = of_device_get_match_data(dev);
if (!dp_data)
return -ENODEV;
ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL);
if (ret < 0)
return ret;
@@ -394,7 +384,12 @@ static int rockchip_dp_probe(struct platform_device *pdev)
dp->dev = dev;
dp->adp = ERR_PTR(-ENODEV);
dp->data = dp_data;
dp->plat_data.panel = panel;
dp->plat_data.dev_type = dp->data->chip_type;
dp->plat_data.power_on_start = rockchip_dp_poweron_start;
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
ret = rockchip_dp_of_probe(dp);
if (ret < 0)
@@ -402,12 +397,19 @@ static int rockchip_dp_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, dp);
dp->adp = analogix_dp_probe(dev, &dp->plat_data);
if (IS_ERR(dp->adp))
return PTR_ERR(dp->adp);
return component_add(dev, &rockchip_dp_component_ops);
}
static int rockchip_dp_remove(struct platform_device *pdev)
{
struct rockchip_dp_device *dp = platform_get_drvdata(pdev);
component_del(&pdev->dev, &rockchip_dp_component_ops);
analogix_dp_remove(dp->adp);
return 0;
}