linux-kernel - [PATCH v3 21/28] drm/sun4i: Add support for Synopsys HDMI PHY

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Date:   Sun,  4 Nov 2018 19:26:58 +0100
From:   Jernej Skrabec <jernej.skrabec@...l.net>
To:     maxime.ripard@...tlin.com, wens@...e.org
Cc:     robh+dt@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
        airlied@...ux.ie, architt@...eaurora.org, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-sunxi@...glegroups.com, jernej.skrabec@...l.net
Subject: [PATCH v3 21/28] drm/sun4i: Add support for Synopsys HDMI PHY

Currently sun8i-hdmi-phy driver supports only custom PHYs connected to
DW HDMI controller. Since newest Allwinner SoCs have unmodified Synopsys
PHY, driver has to be reorganized to support them.

Variant structure is expanded to allow differentiation between custom
and Sysnopsys PHYs and to hold Synopsys PHY settings.

Since DW HDMI bridge platform data has different fields for custom and
Sysnopsys PHY, function sun8i_hdmi_phy_get_ops() is replaced with
sun8i_hdmi_phy_set_ops().

Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
---
 drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c  |  4 +---
 drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h  |  7 ++++++-
 drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c | 19 +++++++++++++++++--
 3 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
index 445cca8d9a26..dc47720c99ba 100644
--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
@@ -184,9 +184,7 @@ static int sun8i_dw_hdmi_bind(struct device *dev, struct device *master,
 	sun8i_hdmi_phy_init(hdmi->phy);
 
 	plat_data->mode_valid = hdmi->quirks->mode_valid;
-	plat_data->phy_ops = sun8i_hdmi_phy_get_ops();
-	plat_data->phy_name = "sun8i_dw_hdmi_phy";
-	plat_data->phy_data = hdmi->phy;
+	sun8i_hdmi_phy_set_ops(hdmi->phy, plat_data);
 
 	platform_set_drvdata(pdev, hdmi);
 
diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h
index 49c9e80c46ea..720c5aa8adc1 100644
--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h
@@ -150,6 +150,10 @@ struct sun8i_hdmi_phy;
 struct sun8i_hdmi_phy_variant {
 	bool has_phy_clk;
 	bool has_second_pll;
+	unsigned int is_custom_phy : 1;
+	const struct dw_hdmi_curr_ctrl *cur_ctr;
+	const struct dw_hdmi_mpll_config *mpll_cfg;
+	const struct dw_hdmi_phy_config *phy_cfg;
 	void (*phy_init)(struct sun8i_hdmi_phy *phy);
 	void (*phy_disable)(struct dw_hdmi *hdmi,
 			    struct sun8i_hdmi_phy *phy);
@@ -198,7 +202,8 @@ int sun8i_hdmi_phy_probe(struct sun8i_dw_hdmi *hdmi, struct device_node *node);
 void sun8i_hdmi_phy_remove(struct sun8i_dw_hdmi *hdmi);
 
 void sun8i_hdmi_phy_init(struct sun8i_hdmi_phy *phy);
-const struct dw_hdmi_phy_ops *sun8i_hdmi_phy_get_ops(void);
+void sun8i_hdmi_phy_set_ops(struct sun8i_hdmi_phy *phy,
+			    struct dw_hdmi_plat_data *plat_data);
 
 int sun8i_phy_clk_create(struct sun8i_hdmi_phy *phy, struct device *dev,
 			 bool second_parent);
diff --git a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
index adc3ba7df7e3..635825b55648 100644
--- a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
+++ b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
@@ -390,9 +390,20 @@ void sun8i_hdmi_phy_init(struct sun8i_hdmi_phy *phy)
 	phy->variant->phy_init(phy);
 }
 
-const struct dw_hdmi_phy_ops *sun8i_hdmi_phy_get_ops(void)
+void sun8i_hdmi_phy_set_ops(struct sun8i_hdmi_phy *phy,
+			    struct dw_hdmi_plat_data *plat_data)
 {
-	return &sun8i_hdmi_phy_ops;
+	struct sun8i_hdmi_phy_variant *variant = phy->variant;
+
+	if (variant->is_custom_phy) {
+		plat_data->phy_ops = &sun8i_hdmi_phy_ops;
+		plat_data->phy_name = "sun8i_dw_hdmi_phy";
+		plat_data->phy_data = phy;
+	} else {
+		plat_data->mpll_cfg = variant->mpll_cfg;
+		plat_data->cur_ctr = variant->cur_ctr;
+		plat_data->phy_config = variant->phy_cfg;
+	}
 }
 
 static struct regmap_config sun8i_hdmi_phy_regmap_config = {
@@ -404,6 +415,7 @@ static struct regmap_config sun8i_hdmi_phy_regmap_config = {
 };
 
 static const struct sun8i_hdmi_phy_variant sun8i_a83t_hdmi_phy = {
+	.is_custom_phy = true,
 	.phy_init = &sun8i_hdmi_phy_init_a83t,
 	.phy_disable = &sun8i_hdmi_phy_disable_a83t,
 	.phy_config = &sun8i_hdmi_phy_config_a83t,
@@ -411,6 +423,7 @@ static const struct sun8i_hdmi_phy_variant sun8i_a83t_hdmi_phy = {
 
 static const struct sun8i_hdmi_phy_variant sun8i_h3_hdmi_phy = {
 	.has_phy_clk = true,
+	.is_custom_phy = true,
 	.phy_init = &sun8i_hdmi_phy_init_h3,
 	.phy_disable = &sun8i_hdmi_phy_disable_h3,
 	.phy_config = &sun8i_hdmi_phy_config_h3,
@@ -419,6 +432,7 @@ static const struct sun8i_hdmi_phy_variant sun8i_h3_hdmi_phy = {
 static const struct sun8i_hdmi_phy_variant sun8i_r40_hdmi_phy = {
 	.has_phy_clk = true,
 	.has_second_pll = true,
+	.is_custom_phy = true,
 	.phy_init = &sun8i_hdmi_phy_init_h3,
 	.phy_disable = &sun8i_hdmi_phy_disable_h3,
 	.phy_config = &sun8i_hdmi_phy_config_h3,
@@ -426,6 +440,7 @@ static const struct sun8i_hdmi_phy_variant sun8i_r40_hdmi_phy = {
 
 static const struct sun8i_hdmi_phy_variant sun50i_a64_hdmi_phy = {
 	.has_phy_clk = true,
+	.is_custom_phy = true,
 	.phy_init = &sun8i_hdmi_phy_init_h3,
 	.phy_disable = &sun8i_hdmi_phy_disable_h3,
 	.phy_config = &sun8i_hdmi_phy_config_h3,
-- 
2.19.1