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drm/rockchip: lvds: support generic phy interface

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Change-Id: I4ba196ea83c9396c43201ba9b2fe223b5e76cdeb
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
This commit is contained in:
Wyon Bi
2018-12-29 09:20:14 +08:00
parent 504459b7d8
commit fbc1bb1ae6
1 changed files with 51 additions and 19 deletions
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70
drivers/gpu/drm/rockchip/rockchip_lvds.c
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@@ -28,6 +28,7 @@
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/phy/phy.h>
#include <uapi/linux/videodev2.h>
#include <video/display_timing.h>
@@ -65,6 +66,7 @@ struct rockchip_lvds_soc_data {
struct rockchip_lvds {
struct device *dev;
struct phy *phy;
void __iomem *regs;
void __iomem *regs_ctrl;
struct regmap *grf;
@@ -434,6 +436,7 @@ rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,
static void rockchip_lvds_encoder_enable(struct drm_encoder *encoder)
{
struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
int ret;
clk_prepare_enable(lvds->pclk);
clk_prepare_enable(lvds->pclk_ctrl);
@@ -446,6 +449,16 @@ static void rockchip_lvds_encoder_enable(struct drm_encoder *encoder)
if (lvds->soc_data->power_on)
lvds->soc_data->power_on(lvds);
if (lvds->phy) {
ret = phy_set_mode(lvds->phy, PHY_MODE_VIDEO_LVDS);
if (ret) {
dev_err(lvds->dev, "failed to set phy mode: %d\n", ret);
return;
}
phy_power_on(lvds->phy);
}
if (lvds->panel)
drm_panel_enable(lvds->panel);
}
@@ -457,6 +470,9 @@ static void rockchip_lvds_encoder_disable(struct drm_encoder *encoder)
if (lvds->panel)
drm_panel_disable(lvds->panel);
if (lvds->phy)
phy_power_off(lvds->phy);
if (lvds->soc_data->power_off)
lvds->soc_data->power_off(lvds);
@@ -692,28 +708,44 @@ static int rockchip_lvds_probe(struct platform_device *pdev)
lvds->soc_data = of_device_get_match_data(dev);
platform_set_drvdata(pdev, lvds);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
lvds->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(lvds->regs))
return PTR_ERR(lvds->regs);
lvds->pclk = devm_clk_get(dev, "pclk_lvds");
if (IS_ERR(lvds->pclk)) {
dev_err(dev, "could not get pclk_lvds\n");
return PTR_ERR(lvds->pclk);
lvds->phy = devm_phy_optional_get(dev, "phy");
if (IS_ERR(lvds->phy)) {
ret = PTR_ERR(lvds->phy);
dev_err(dev, "failed to get phy: %d\n", ret);
return ret;
}
lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,grf");
if (IS_ERR(lvds->grf)) {
dev_err(dev, "missing rockchip,grf property\n");
return PTR_ERR(lvds->grf);
}
if (lvds->soc_data->probe) {
ret = lvds->soc_data->probe(lvds);
if (ret)
if (lvds->phy) {
lvds->grf = syscon_node_to_regmap(dev->parent->of_node);
if (IS_ERR(lvds->grf)) {
ret = PTR_ERR(lvds->grf);
dev_err(dev, "Unable to get grf: %d\n", ret);
return ret;
}
} else {
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
lvds->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(lvds->regs))
return PTR_ERR(lvds->regs);
lvds->pclk = devm_clk_get(dev, "pclk_lvds");
if (IS_ERR(lvds->pclk)) {
dev_err(dev, "could not get pclk_lvds\n");
return PTR_ERR(lvds->pclk);
}
lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
"rockchip,grf");
if (IS_ERR(lvds->grf)) {
dev_err(dev, "missing rockchip,grf property\n");
return PTR_ERR(lvds->grf);
}
if (lvds->soc_data->probe) {
ret = lvds->soc_data->probe(lvds);
if (ret)
return ret;
}
}
return component_add(dev, &rockchip_lvds_component_ops);