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drm/tilcdc: Stop using struct drm_driver load() callback 

Stop using struct drm_driver load() and unload() callbacks. The
callbacks should not be used anymore. Instead of using load the
drm_device is allocated with drm_dev_alloc() and registered with
drm_dev_register() only after the driver is completely initialized.
The deinitialization is done directly either in component unbind
callback or in platform driver demove callback.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Jyri Sarha 2016-10-17 17:53:33 +03:00
parent 15d704e53c
commit 923310ba73
1 changed files with 71 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

126
drivers/gpu/drm/tilcdc/tilcdc_drv.c
View File

@ -194,18 +194,22 @@ static int cpufreq_transition(struct notifier_block *nb,
* DRM operations:
*/
static int tilcdc_unload(struct drm_device *dev)
static void tilcdc_fini(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
tilcdc_remove_external_encoders(dev);
drm_modeset_lock_crtc(priv->crtc, NULL);
tilcdc_crtc_disable(priv->crtc);
drm_modeset_unlock_crtc(priv->crtc);
drm_dev_unregister(dev);
drm_fbdev_cma_fini(priv->fbdev);
drm_kms_helper_poll_fini(dev);
drm_mode_config_cleanup(dev);
drm_vblank_cleanup(dev);
drm_fbdev_cma_fini(priv->fbdev);
drm_irq_uninstall(dev);
drm_mode_config_cleanup(dev);
tilcdc_remove_external_encoders(dev);
#ifdef CONFIG_CPU_FREQ
cpufreq_unregister_notifier(&priv->freq_transition,
@ -225,28 +229,34 @@ static int tilcdc_unload(struct drm_device *dev)
pm_runtime_disable(dev->dev);
return 0;
drm_dev_unref(dev);
}
static int tilcdc_load(struct drm_device *dev, unsigned long flags)
static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
{
struct platform_device *pdev = dev->platformdev;
struct device_node *node = pdev->dev.of_node;
struct drm_device *ddev;
struct platform_device *pdev = to_platform_device(dev);
struct device_node *node = dev->of_node;
struct tilcdc_drm_private *priv;
struct resource *res;
u32 bpp = 0;
int ret;
priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(dev->dev, "failed to allocate private data\n");
dev_err(dev, "failed to allocate private data\n");
return -ENOMEM;
}
dev->dev_private = priv;
ddev = drm_dev_alloc(ddrv, dev);
if (IS_ERR(ddev))
return PTR_ERR(ddev);
ddev->platformdev = pdev;
ddev->dev_private = priv;
priv->is_componentized =
tilcdc_get_external_components(dev->dev, NULL) > 0;
tilcdc_get_external_components(dev, NULL) > 0;
priv->wq = alloc_ordered_workqueue("tilcdc", 0);
if (!priv->wq) {
@ -256,21 +266,21 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev->dev, "failed to get memory resource\n");
dev_err(dev, "failed to get memory resource\n");
ret = -EINVAL;
goto fail_free_wq;
}
priv->mmio = ioremap_nocache(res->start, resource_size(res));
if (!priv->mmio) {
dev_err(dev->dev, "failed to ioremap\n");
dev_err(dev, "failed to ioremap\n");
ret = -ENOMEM;
goto fail_free_wq;
}
priv->clk = clk_get(dev->dev, "fck");
priv->clk = clk_get(dev, "fck");
if (IS_ERR(priv->clk)) {
dev_err(dev->dev, "failed to get functional clock\n");
dev_err(dev, "failed to get functional clock\n");
ret = -ENODEV;
goto fail_iounmap;
}
@ -280,7 +290,7 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
ret = cpufreq_register_notifier(&priv->freq_transition,
CPUFREQ_TRANSITION_NOTIFIER);
if (ret) {
dev_err(dev->dev, "failed to register cpufreq notifier\n");
dev_err(dev, "failed to register cpufreq notifier\n");
goto fail_put_clk;
}
#endif
@ -301,11 +311,11 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
DBG("Maximum Pixel Clock Value %dKHz", priv->max_pixelclock);
pm_runtime_enable(dev->dev);
pm_runtime_enable(dev);
/* Determine LCD IP Version */
pm_runtime_get_sync(dev->dev);
switch (tilcdc_read(dev, LCDC_PID_REG)) {
pm_runtime_get_sync(dev);
switch (tilcdc_read(ddev, LCDC_PID_REG)) {
case 0x4c100102:
priv->rev = 1;
break;
@ -314,14 +324,14 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
priv->rev = 2;
break;
default:
dev_warn(dev->dev, "Unknown PID Reg value 0x%08x, "
"defaulting to LCD revision 1\n",
tilcdc_read(dev, LCDC_PID_REG));
dev_warn(dev, "Unknown PID Reg value 0x%08x, "
"defaulting to LCD revision 1\n",
tilcdc_read(ddev, LCDC_PID_REG));
priv->rev = 1;
break;
}
pm_runtime_put_sync(dev->dev);
pm_runtime_put_sync(dev);
if (priv->rev == 1) {
DBG("Revision 1 LCDC supports only RGB565 format");
@ -354,74 +364,82 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
}
}
ret = modeset_init(dev);
ret = modeset_init(ddev);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize mode setting\n");
dev_err(dev, "failed to initialize mode setting\n");
goto fail_cpufreq_unregister;
}
platform_set_drvdata(pdev, dev);
platform_set_drvdata(pdev, ddev);
if (priv->is_componentized) {
ret = component_bind_all(dev->dev, dev);
ret = component_bind_all(dev, ddev);
if (ret < 0)
goto fail_mode_config_cleanup;
ret = tilcdc_add_external_encoders(dev);
ret = tilcdc_add_external_encoders(ddev);
if (ret < 0)
goto fail_component_cleanup;
}
if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) {
dev_err(dev->dev, "no encoders/connectors found\n");
dev_err(dev, "no encoders/connectors found\n");
ret = -ENXIO;
goto fail_external_cleanup;
}
ret = drm_vblank_init(dev, 1);
ret = drm_vblank_init(ddev, 1);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");
dev_err(dev, "failed to initialize vblank\n");
goto fail_external_cleanup;
}
ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
ret = drm_irq_install(ddev, platform_get_irq(pdev, 0));
if (ret < 0) {
dev_err(dev->dev, "failed to install IRQ handler\n");
dev_err(dev, "failed to install IRQ handler\n");
goto fail_vblank_cleanup;
}
drm_mode_config_reset(dev);
drm_mode_config_reset(ddev);
priv->fbdev = drm_fbdev_cma_init(dev, bpp,
dev->mode_config.num_crtc,
dev->mode_config.num_connector);
priv->fbdev = drm_fbdev_cma_init(ddev, bpp,
ddev->mode_config.num_crtc,
ddev->mode_config.num_connector);
if (IS_ERR(priv->fbdev)) {
ret = PTR_ERR(priv->fbdev);
goto fail_irq_uninstall;
}
drm_kms_helper_poll_init(dev);
drm_kms_helper_poll_init(ddev);
ret = drm_dev_register(ddev, 0);
if (ret)
goto fail_platform_init;
return 0;
fail_platform_init:
drm_kms_helper_poll_fini(ddev);
drm_fbdev_cma_fini(priv->fbdev);
fail_irq_uninstall:
drm_irq_uninstall(dev);
drm_irq_uninstall(ddev);
fail_vblank_cleanup:
drm_vblank_cleanup(dev);
drm_vblank_cleanup(ddev);
fail_component_cleanup:
if (priv->is_componentized)
component_unbind_all(dev->dev, dev);
component_unbind_all(dev, dev);
fail_mode_config_cleanup:
drm_mode_config_cleanup(dev);
drm_mode_config_cleanup(ddev);
fail_external_cleanup:
tilcdc_remove_external_encoders(dev);
tilcdc_remove_external_encoders(ddev);
fail_cpufreq_unregister:
pm_runtime_disable(dev->dev);
pm_runtime_disable(dev);
#ifdef CONFIG_CPU_FREQ
cpufreq_unregister_notifier(&priv->freq_transition,
CPUFREQ_TRANSITION_NOTIFIER);
@ -438,7 +456,8 @@ fail_free_wq:
destroy_workqueue(priv->wq);
fail_unset_priv:
dev->dev_private = NULL;
ddev->dev_private = NULL;
drm_dev_unref(ddev);
return ret;
}
@ -583,8 +602,6 @@ static const struct file_operations fops = {
static struct drm_driver tilcdc_driver = {
.driver_features = (DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET |
DRIVER_PRIME | DRIVER_ATOMIC),
.load = tilcdc_load,
.unload = tilcdc_unload,
.lastclose = tilcdc_lastclose,
.irq_handler = tilcdc_irq,
.get_vblank_counter = drm_vblank_no_hw_counter,
@ -658,10 +675,9 @@ static const struct dev_pm_ops tilcdc_pm_ops = {
/*
* Platform driver:
*/
static int tilcdc_bind(struct device *dev)
{
return drm_platform_init(&tilcdc_driver, to_platform_device(dev));
return tilcdc_init(&tilcdc_driver, dev);
}
static void tilcdc_unbind(struct device *dev)
@ -672,7 +688,7 @@ static void tilcdc_unbind(struct device *dev)
if (!ddev->dev_private)
return;
drm_put_dev(dev_get_drvdata(dev));
tilcdc_fini(dev_get_drvdata(dev));
}
static const struct component_master_ops tilcdc_comp_ops = {
@ -695,7 +711,7 @@ static int tilcdc_pdev_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
else if (ret == 0)
return drm_platform_init(&tilcdc_driver, pdev);
return tilcdc_init(&tilcdc_driver, &pdev->dev);
else
return component_master_add_with_match(&pdev->dev,
&tilcdc_comp_ops,
@ -710,7 +726,7 @@ static int tilcdc_pdev_remove(struct platform_device *pdev)
if (ret < 0)
return ret;
else if (ret == 0)
drm_put_dev(platform_get_drvdata(pdev));
tilcdc_fini(platform_get_drvdata(pdev));
else
component_master_del(&pdev->dev, &tilcdc_comp_ops);