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

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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
This commit is contained in:
Marek Szyprowski 2020-03-10 11:34:27 +01:00 committed by Andrzej Hajda
parent 47f7826c52
commit 83a196773b
4 changed files with 61 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
View File

@ -1636,8 +1636,7 @@ static ssize_t analogix_dpaux_transfer(struct drm_dp_aux *aux,
}
struct analogix_dp_device *
analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
struct analogix_dp_plat_data *plat_data)
analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
{
struct platform_device *pdev = to_platform_device(dev);
struct analogix_dp_device *dp;
@ -1740,22 +1739,30 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
irq_flags, "analogix-dp", dp);
if (ret) {
dev_err(&pdev->dev, "failed to request irq\n");
goto err_disable_pm_runtime;
return ERR_PTR(ret);
}
disable_irq(dp->irq);
return dp;
}
EXPORT_SYMBOL_GPL(analogix_dp_probe);
int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev)
{
int ret;
dp->drm_dev = drm_dev;
dp->encoder = dp->plat_data->encoder;
dp->aux.name = "DP-AUX";
dp->aux.transfer = analogix_dpaux_transfer;
dp->aux.dev = &pdev->dev;
dp->aux.dev = dp->dev;
ret = drm_dp_aux_register(&dp->aux);
if (ret)
return ERR_PTR(ret);
return ret;
pm_runtime_enable(dev);
pm_runtime_enable(dp->dev);
ret = analogix_dp_create_bridge(drm_dev, dp);
if (ret) {
@ -1763,13 +1770,12 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
goto err_disable_pm_runtime;
}
return dp;
return 0;
err_disable_pm_runtime:
pm_runtime_disable(dp->dev);
pm_runtime_disable(dev);
return ERR_PTR(ret);
return ret;
}
EXPORT_SYMBOL_GPL(analogix_dp_bind);
@ -1786,10 +1792,15 @@ void analogix_dp_unbind(struct analogix_dp_device *dp)
drm_dp_aux_unregister(&dp->aux);
pm_runtime_disable(dp->dev);
clk_disable_unprepare(dp->clock);
}
EXPORT_SYMBOL_GPL(analogix_dp_unbind);
void analogix_dp_remove(struct analogix_dp_device *dp)
{
clk_disable_unprepare(dp->clock);
}
EXPORT_SYMBOL_GPL(analogix_dp_remove);
#ifdef CONFIG_PM
int analogix_dp_suspend(struct analogix_dp_device *dp)
{

29
drivers/gpu/drm/exynos/exynos_dp.c
View File

@ -158,15 +158,8 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
struct drm_device *drm_dev = data;
int ret;
dp->dev = dev;
dp->drm_dev = drm_dev;
dp->plat_data.dev_type = EXYNOS_DP;
dp->plat_data.power_on_start = exynos_dp_poweron;
dp->plat_data.power_off = exynos_dp_poweroff;
dp->plat_data.attach = exynos_dp_bridge_attach;
dp->plat_data.get_modes = exynos_dp_get_modes;
if (!dp->plat_data.panel && !dp->ptn_bridge) {
ret = exynos_dp_dt_parse_panel(dp);
if (ret)
@ -184,13 +177,11 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
dp->plat_data.encoder = encoder;
dp->adp = analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
if (IS_ERR(dp->adp)) {
ret = analogix_dp_bind(dp->adp, dp->drm_dev);
if (ret)
dp->encoder.funcs->destroy(&dp->encoder);
return PTR_ERR(dp->adp);
}
return 0;
return ret;
}
static void exynos_dp_unbind(struct device *dev, struct device *master,
@ -221,6 +212,7 @@ static int exynos_dp_probe(struct platform_device *pdev)
if (!dp)
return -ENOMEM;
dp->dev = dev;
/*
* We just use the drvdata until driver run into component
* add function, and then we would set drvdata to null, so
@ -246,16 +238,29 @@ static int exynos_dp_probe(struct platform_device *pdev)
/* The remote port can be either a panel or a bridge */
dp->plat_data.panel = panel;
dp->plat_data.dev_type = EXYNOS_DP;
dp->plat_data.power_on_start = exynos_dp_poweron;
dp->plat_data.power_off = exynos_dp_poweroff;
dp->plat_data.attach = exynos_dp_bridge_attach;
dp->plat_data.get_modes = exynos_dp_get_modes;
dp->plat_data.skip_connector = !!bridge;
dp->ptn_bridge = bridge;
out:
dp->adp = analogix_dp_probe(dev, &dp->plat_data);
if (IS_ERR(dp->adp))
return PTR_ERR(dp->adp);
return component_add(&pdev->dev, &exynos_dp_ops);
}
static int exynos_dp_remove(struct platform_device *pdev)
{
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
component_del(&pdev->dev, &exynos_dp_ops);
analogix_dp_remove(dp->adp);
return 0;
}

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;
}

5
include/drm/bridge/analogix_dp.h
View File

@ -42,9 +42,10 @@ int analogix_dp_resume(struct analogix_dp_device *dp);
int analogix_dp_suspend(struct analogix_dp_device *dp);
struct analogix_dp_device *
analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
struct analogix_dp_plat_data *plat_data);
analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data);
int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev);
void analogix_dp_unbind(struct analogix_dp_device *dp);
void analogix_dp_remove(struct analogix_dp_device *dp);
int analogix_dp_start_crc(struct drm_connector *connector);
int analogix_dp_stop_crc(struct drm_connector *connector);