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drm/rockchip: dw_hdmi: store rockchip_hdmi reference in phy_data object

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When using special phy handling operations we'll often need access to
the rockchip_hdmi struct.

As the chip-data that occupies the phy_data pointer initially gets
assigned to the rockchip_hdmi struct, we can now re-use this phy_data
pointer to hold the reference to the rockchip_hdmi struct and use this
reference later on.

Inspiration for this comes from meson and sunxi dw-hdmi, which are using
the same method.

changes in v3:
- reword commit message

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Zheng Yang <zhengyang@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180912124740.20343-6-heiko@sntech.de
This commit is contained in:
Heiko Stuebner 2018-09-12 14:47:39 +02:00
parent bd1302305a
commit 5c3f3d2239
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
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@ -335,7 +335,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
void *data)
{
struct platform_device *pdev = to_platform_device(dev);
const struct dw_hdmi_plat_data *plat_data;
struct dw_hdmi_plat_data *plat_data;
const struct of_device_id *match;
struct drm_device *drm = data;
struct drm_encoder *encoder;
@ -350,9 +350,14 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
return -ENOMEM;
match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
plat_data = match->data;
plat_data = devm_kmemdup(&pdev->dev, match->data,
sizeof(*plat_data), GFP_KERNEL);
if (!plat_data)
return -ENOMEM;
hdmi->dev = &pdev->dev;
hdmi->chip_data = plat_data->phy_data;
plat_data->phy_data = hdmi;
encoder = &hdmi->encoder;
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);