drm/hisilicon: Don't set drm_device->platformdev

It's deprecated and only should be used by drivers which still use
drm_platform_init, not by anyone else.

And indeed it's entirely unused and can be nuked.

This required a bit more fudging, but I guess kirin_dc_ops really
wants to operate on the platform_device, not something else. Also
bonus points for implementing abstraction, and then storing the vfunc
in a global variable.

v2: Don't break the build soooo badly :(
Note that the cleanup function is a bit confused: ade_data was never
set as drvdata, and calling drm_crtc_cleanup directly is a bug - this
is called indirectly through drm_mode_config_cleanup, which calls into
crtc->destroy, which already has the call to drm_crtc_cleanup. Which
means we can just nuke it.

Note this is the 2nd attempt after the first one failed and had to be
reverted again in

commit 9cd2e854d61ccfa51686f3ed7b0c917708fc641f
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Aug 17 13:59:40 2016 +0200

    Revert "drm/hisilicon: Don't set drm_device->platformdev"

Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161209141944.22121-1-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index afc2b5d..3ea7045 100644 (file)
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -973,9 +973,9 @@ static int ade_dts_parse(struct platform_device *pdev, struct ade_hw_ctx *ctx)
        return 0;
 }
 
-static int ade_drm_init(struct drm_device *dev)
+static int ade_drm_init(struct platform_device *pdev)
 {
-       struct platform_device *pdev = dev->platformdev;
+       struct drm_device *dev = platform_get_drvdata(pdev);
        struct ade_data *ade;
        struct ade_hw_ctx *ctx;
        struct ade_crtc *acrtc;
@@ -1034,13 +1034,8 @@ static int ade_drm_init(struct drm_device *dev)
        return 0;
 }
 
-static void ade_drm_cleanup(struct drm_device *dev)
+static void ade_drm_cleanup(struct platform_device *pdev)
 {
-       struct platform_device *pdev = dev->platformdev;
-       struct ade_data *ade = platform_get_drvdata(pdev);
-       struct drm_crtc *crtc = &ade->acrtc.base;
-
-       drm_crtc_cleanup(crtc);
 }
 
 const struct kirin_dc_ops ade_dc_ops = {

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index ebd5f4f..fa228b7 100644 (file)
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -42,7 +42,7 @@ static int kirin_drm_kms_cleanup(struct drm_device *dev)
 #endif
        drm_kms_helper_poll_fini(dev);
        drm_vblank_cleanup(dev);
-       dc_ops->cleanup(dev);
+       dc_ops->cleanup(to_platform_device(dev->dev));
        drm_mode_config_cleanup(dev);
        devm_kfree(dev->dev, priv);
        dev->dev_private = NULL;
@@ -104,7 +104,7 @@ static int kirin_drm_kms_init(struct drm_device *dev)
        kirin_drm_mode_config_init(dev);
 
        /* display controller init */
-       ret = dc_ops->init(dev);
+       ret = dc_ops->init(to_platform_device(dev->dev));
        if (ret)
                goto err_mode_config_cleanup;
 
@@ -138,7 +138,7 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 err_unbind_all:
        component_unbind_all(dev->dev, dev);
 err_dc_cleanup:
-       dc_ops->cleanup(dev);
+       dc_ops->cleanup(to_platform_device(dev->dev));
 err_mode_config_cleanup:
        drm_mode_config_cleanup(dev);
        devm_kfree(dev->dev, priv);
@@ -209,8 +209,6 @@ static int kirin_drm_bind(struct device *dev)
        if (IS_ERR(drm_dev))
                return PTR_ERR(drm_dev);
 
-       drm_dev->platformdev = to_platform_device(dev);
-
        ret = kirin_drm_kms_init(drm_dev);
        if (ret)
                goto err_drm_dev_unref;

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
index 1a07caf..a0bb217 100644 (file)
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -15,8 +15,8 @@
 
 /* display controller init/cleanup ops */
 struct kirin_dc_ops {
-       int (*init)(struct drm_device *dev);
-       void (*cleanup)(struct drm_device *dev);
+       int (*init)(struct platform_device *pdev);
+       void (*cleanup)(struct platform_device *pdev);
 };
 
 struct kirin_drm_private {