drm/msm/dsi: push provided clocks handling into a generic code

All MSM DSI PHYs provide two clocks: byte and pixel ones.
Register/unregister provided clocks from the generic place, removing
boilerplate code from all MSM DSI PHY drivers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Tested-by: Stephen Boyd <swboyd@chromium.org> # on sc7180 lazor
Link: https://lore.kernel.org/r/20210331105735.3690009-11-dmitry.baryshkov@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>

12 files changed, 78 insertions, 295 deletions

diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index b310cf344ed4..43590f338d20 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -96,19 +96,12 @@ struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
 struct msm_dsi_pll;
 #ifdef CONFIG_DRM_MSM_DSI_PLL
 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
-int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
-	struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll);
 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll);
 #else
 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
 {
 }
-static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
-	struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
-{
-	return -ENODEV;
-}
 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll)
 {
 }
@@ -144,7 +137,7 @@ struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
 void msm_dsi_host_unregister(struct mipi_dsi_host *host);
 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
-			struct msm_dsi_pll *src_pll);
+			struct msm_dsi_phy *src_phy);
 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
 	struct msm_dsi_phy_clk_request *clk_req,
@@ -196,6 +189,8 @@ void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy,
 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
 			     enum msm_dsi_phy_usecase uc);
+int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy,
+	struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
 
 #endif /* __DSI_CONNECTOR_H__ */
 
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 246d3f06f3ef..8a10e4343281 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2224,13 +2224,13 @@ void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, u32 dma_base,
 }
 
 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
-	struct msm_dsi_pll *src_pll)
+	struct msm_dsi_phy *src_phy)
 {
 	struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
 	struct clk *byte_clk_provider, *pixel_clk_provider;
 	int ret;
 
-	ret = msm_dsi_pll_get_clk_provider(src_pll,
+	ret = msm_dsi_phy_get_clk_provider(src_phy,
 				&byte_clk_provider, &pixel_clk_provider);
 	if (ret) {
 		pr_info("%s: can't get provider from pll, don't set parent\n",
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 1d28dfba2c9b..86e36be58701 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -70,7 +70,6 @@ static int dsi_mgr_setup_components(int id)
 	struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
 	struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
 	struct msm_dsi *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
-	struct msm_dsi_pll *src_pll;
 	int ret;
 
 	if (!IS_DUAL_DSI()) {
@@ -79,10 +78,7 @@ static int dsi_mgr_setup_components(int id)
 			return ret;
 
 		msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);
-		src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
-		if (IS_ERR(src_pll))
-			return PTR_ERR(src_pll);
-		ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
+		ret = msm_dsi_host_set_src_pll(msm_dsi->host, msm_dsi->phy);
 	} else if (!other_dsi) {
 		ret = 0;
 	} else {
@@ -109,13 +105,10 @@ static int dsi_mgr_setup_components(int id)
 					MSM_DSI_PHY_MASTER);
 		msm_dsi_phy_set_usecase(clk_slave_dsi->phy,
 					MSM_DSI_PHY_SLAVE);
-		src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy);
-		if (IS_ERR(src_pll))
-			return PTR_ERR(src_pll);
-		ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll);
+		ret = msm_dsi_host_set_src_pll(msm_dsi->host, clk_master_dsi->phy);
 		if (ret)
 			return ret;
-		ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll);
+		ret = msm_dsi_host_set_src_pll(other_dsi->host, clk_master_dsi->phy);
 	}
 
 	return ret;
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index 5f153b683521..69214447f757 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -3,6 +3,7 @@
  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
  */
 
+#include <linux/clk-provider.h>
 #include <linux/platform_device.h>
 
 #include "dsi_phy.h"
@@ -652,6 +653,14 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
 	if (!match)
 		return -ENODEV;
 
+	phy->provided_clocks = devm_kzalloc(dev,
+			struct_size(phy->provided_clocks, hws, NUM_PROVIDED_CLKS),
+			GFP_KERNEL);
+	if (!phy->provided_clocks)
+		return -ENOMEM;
+
+	phy->provided_clocks->num = NUM_PROVIDED_CLKS;
+
 	phy->cfg = match->data;
 	phy->pdev = pdev;
 
@@ -719,6 +728,13 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
 		}
 	}
 
+	ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
+				     phy->provided_clocks);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "%s: failed to register clk provider: %d\n", __func__, ret);
+		goto fail;
+	}
+
 	dsi_phy_disable_resource(phy);
 
 	platform_set_drvdata(pdev, phy);
@@ -726,6 +742,12 @@ static int dsi_phy_driver_probe(struct platform_device *pdev)
 	return 0;
 
 fail:
+	if (phy->pll) {
+		of_clk_del_provider(dev->of_node);
+		msm_dsi_pll_destroy(phy->pll);
+		phy->pll = NULL;
+	}
+
 	return ret;
 }
 
@@ -734,6 +756,7 @@ static int dsi_phy_driver_remove(struct platform_device *pdev)
 	struct msm_dsi_phy *phy = platform_get_drvdata(pdev);
 
 	if (phy && phy->pll) {
+		of_clk_del_provider(pdev->dev.of_node);
 		msm_dsi_pll_destroy(phy->pll);
 		phy->pll = NULL;
 	}
@@ -851,3 +874,14 @@ void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
 	if (phy)
 		phy->usecase = uc;
 }
+
+int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy,
+	struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
+{
+	if (byte_clk_provider)
+		*byte_clk_provider = phy->provided_clocks->hws[DSI_BYTE_PLL_CLK]->clk;
+	if (pixel_clk_provider)
+		*pixel_clk_provider = phy->provided_clocks->hws[DSI_PIXEL_PLL_CLK]->clk;
+
+	return -EINVAL;
+}
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
index f737bef74b91..c3099629fa3b 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
@@ -23,9 +23,6 @@ struct msm_dsi_phy_ops {
 struct msm_dsi_pll_ops {
 	int (*enable_seq)(struct msm_dsi_pll *pll);
 	void (*disable_seq)(struct msm_dsi_pll *pll);
-	int (*get_provider)(struct msm_dsi_pll *pll,
-			struct clk **byte_clk_provider,
-			struct clk **pixel_clk_provider);
 	void (*destroy)(struct msm_dsi_pll *pll);
 	void (*save_state)(struct msm_dsi_pll *pll);
 	int (*restore_state)(struct msm_dsi_pll *pll);
@@ -87,6 +84,10 @@ struct msm_dsi_dphy_timing {
 	u8 hs_halfbyte_en_ckln;
 };
 
+#define DSI_BYTE_PLL_CLK		0
+#define DSI_PIXEL_PLL_CLK		1
+#define NUM_PROVIDED_CLKS		2
+
 struct msm_dsi_phy {
 	struct platform_device *pdev;
 	void __iomem *base;
@@ -104,6 +105,8 @@ struct msm_dsi_phy {
 	bool regulator_ldo_mode;
 
 	struct msm_dsi_pll *pll;
+
+	struct clk_hw_onecell_data *provided_clocks;
 };
 
 /*
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c
index 7a98e420414f..8666da1c29e5 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c
@@ -36,10 +36,6 @@
  *                                                  dsi0_pll_post_out_div_clk
  */
 
-#define DSI_BYTE_PLL_CLK		0
-#define DSI_PIXEL_PLL_CLK		1
-#define NUM_PROVIDED_CLKS		2
-
 #define VCO_REF_CLK_RATE		19200000
 
 struct dsi_pll_regs {
@@ -116,9 +112,6 @@ struct dsi_pll_10nm {
 	struct clk_hw *pclk_mux_hw;
 	struct clk_hw *out_dsiclk_hw;
 
-	/* clock-provider: */
-	struct clk_hw_onecell_data *hw_data;
-
 	struct pll_10nm_cached_state cached_state;
 
 	enum msm_dsi_phy_usecase uc;
@@ -621,30 +614,11 @@ static int dsi_pll_10nm_set_usecase(struct msm_dsi_pll *pll,
 	return 0;
 }
 
-static int dsi_pll_10nm_get_provider(struct msm_dsi_pll *pll,
-				     struct clk **byte_clk_provider,
-				     struct clk **pixel_clk_provider)
-{
-	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
-	struct clk_hw_onecell_data *hw_data = pll_10nm->hw_data;
-
-	DBG("DSI PLL%d", pll_10nm->id);
-
-	if (byte_clk_provider)
-		*byte_clk_provider = hw_data->hws[DSI_BYTE_PLL_CLK]->clk;
-	if (pixel_clk_provider)
-		*pixel_clk_provider = hw_data->hws[DSI_PIXEL_PLL_CLK]->clk;
-
-	return 0;
-}
-
 static void dsi_pll_10nm_destroy(struct msm_dsi_pll *pll)
 {
 	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
-	struct device *dev = &pll_10nm->pdev->dev;
 
 	DBG("DSI PLL%d", pll_10nm->id);
-	of_clk_del_provider(dev->of_node);
 
 	clk_hw_unregister_divider(pll_10nm->out_dsiclk_hw);
 	clk_hw_unregister_mux(pll_10nm->pclk_mux_hw);
@@ -662,7 +636,7 @@ static void dsi_pll_10nm_destroy(struct msm_dsi_pll *pll)
  * state to follow the master PLL's divider/mux state. Therefore, we don't
  * require special clock ops that also configure the slave PLL registers
  */
-static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm)
+static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm, struct clk_hw **provided_clocks)
 {
 	char clk_name[32], parent[32], vco_name[32];
 	char parent2[32], parent3[32], parent4[32];
@@ -674,18 +648,11 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm)
 		.ops = &clk_ops_dsi_pll_10nm_vco,
 	};
 	struct device *dev = &pll_10nm->pdev->dev;
-	struct clk_hw_onecell_data *hw_data;
 	struct clk_hw *hw;
 	int ret;
 
 	DBG("DSI%d", pll_10nm->id);
 
-	hw_data = devm_kzalloc(dev, sizeof(*hw_data) +
-			       NUM_PROVIDED_CLKS * sizeof(struct clk_hw *),
-			       GFP_KERNEL);
-	if (!hw_data)
-		return -ENOMEM;
-
 	snprintf(vco_name, 32, "dsi%dvco_clk", pll_10nm->id);
 	pll_10nm->base.clk_hw.init = &vco_init;
 
@@ -737,7 +704,7 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm)
 	}
 
 	pll_10nm->byte_clk_hw = hw;
-	hw_data->hws[DSI_BYTE_PLL_CLK] = hw;
+	provided_clocks[DSI_BYTE_PLL_CLK] = hw;
 
 	snprintf(clk_name, 32, "dsi%d_pll_by_2_bit_clk", pll_10nm->id);
 	snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_10nm->id);
@@ -797,22 +764,10 @@ static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm)
 	}
 
 	pll_10nm->out_dsiclk_hw = hw;
-	hw_data->hws[DSI_PIXEL_PLL_CLK] = hw;
-
-	hw_data->num = NUM_PROVIDED_CLKS;
-	pll_10nm->hw_data = hw_data;
-
-	ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
-				     pll_10nm->hw_data);
-	if (ret) {
-		DRM_DEV_ERROR(dev, "failed to register clk provider: %d\n", ret);
-		goto err_dsiclk_hw;
-	}
+	provided_clocks[DSI_PIXEL_PLL_CLK] = hw;
 
 	return 0;
 
-err_dsiclk_hw:
-	clk_hw_unregister_divider(pll_10nm->out_dsiclk_hw);
 err_pclk_mux_hw:
 	clk_hw_unregister_mux(pll_10nm->pclk_mux_hw);
 err_post_out_div_clk_hw:
@@ -868,7 +823,7 @@ static int dsi_pll_10nm_init(struct msm_dsi_phy *phy)
 
 	pll_10nm->vco_delay = 1;
 
-	ret = pll_10nm_register(pll_10nm);
+	ret = pll_10nm_register(pll_10nm, phy->provided_clocks->hws);
 	if (ret) {
 		DRM_DEV_ERROR(&pdev->dev, "failed to register PLL: %d\n", ret);
 		return ret;
@@ -1105,7 +1060,6 @@ const struct msm_dsi_phy_cfg dsi_phy_10nm_cfgs = {
 		.pll_init = dsi_pll_10nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_10nm_get_provider,
 		.destroy = dsi_pll_10nm_destroy,
 		.save_state = dsi_pll_10nm_save_state,
 		.restore_state = dsi_pll_10nm_restore_state,
@@ -1131,7 +1085,6 @@ const struct msm_dsi_phy_cfg dsi_phy_10nm_8998_cfgs = {
 		.pll_init = dsi_pll_10nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_10nm_get_provider,
 		.destroy = dsi_pll_10nm_destroy,
 		.save_state = dsi_pll_10nm_save_state,
 		.restore_state = dsi_pll_10nm_restore_state,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
index bab86fa6dc4b..07ecdf34f614 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
@@ -34,15 +34,10 @@
 #define POLL_MAX_READS			15
 #define POLL_TIMEOUT_US			1000
 
-#define NUM_PROVIDED_CLKS		2
-
 #define VCO_REF_CLK_RATE		19200000
 #define VCO_MIN_RATE			1300000000UL
 #define VCO_MAX_RATE			2600000000UL
 
-#define DSI_BYTE_PLL_CLK		0
-#define DSI_PIXEL_PLL_CLK		1
-
 #define DSI_PLL_DEFAULT_VCO_POSTDIV	1
 
 struct dsi_pll_input {
@@ -142,9 +137,6 @@ struct dsi_pll_14nm {
 	struct clk_hw *hws[NUM_DSI_CLOCKS_MAX];
 	u32 num_hws;
 
-	/* clock-provider: */
-	struct clk_hw_onecell_data *hw_data;
-
 	struct pll_14nm_cached_state cached_state;
 
 	enum msm_dsi_phy_usecase uc;
@@ -880,29 +872,11 @@ static int dsi_pll_14nm_set_usecase(struct msm_dsi_pll *pll,
 	return 0;
 }
 
-static int dsi_pll_14nm_get_provider(struct msm_dsi_pll *pll,
-				     struct clk **byte_clk_provider,
-				     struct clk **pixel_clk_provider)
-{
-	struct dsi_pll_14nm *pll_14nm = to_pll_14nm(pll);
-	struct clk_hw_onecell_data *hw_data = pll_14nm->hw_data;
-
-	if (byte_clk_provider)
-		*byte_clk_provider = hw_data->hws[DSI_BYTE_PLL_CLK]->clk;
-	if (pixel_clk_provider)
-		*pixel_clk_provider = hw_data->hws[DSI_PIXEL_PLL_CLK]->clk;
-
-	return 0;
-}
-
 static void dsi_pll_14nm_destroy(struct msm_dsi_pll *pll)
 {
 	struct dsi_pll_14nm *pll_14nm = to_pll_14nm(pll);
-	struct platform_device *pdev = pll_14nm->pdev;
 	int num_hws = pll_14nm->num_hws;
 
-	of_clk_del_provider(pdev->dev.of_node);
-
 	while (num_hws--)
 		clk_hw_unregister(pll_14nm->hws[num_hws]);
 }
@@ -943,7 +917,7 @@ static struct clk_hw *pll_14nm_postdiv_register(struct dsi_pll_14nm *pll_14nm,
 	return &pll_postdiv->hw;
 }
 
-static int pll_14nm_register(struct dsi_pll_14nm *pll_14nm)
+static int pll_14nm_register(struct dsi_pll_14nm *pll_14nm, struct clk_hw **provided_clocks)
 {
 	char clk_name[32], parent[32], vco_name[32];
 	struct clk_init_data vco_init = {
@@ -955,19 +929,12 @@ static int pll_14nm_register(struct dsi_pll_14nm *pll_14nm)
 	};
 	struct device *dev = &pll_14nm->pdev->dev;
 	struct clk_hw **hws = pll_14nm->hws;
-	struct clk_hw_onecell_data *hw_data;
 	struct clk_hw *hw;
 	int num = 0;
 	int ret;
 
 	DBG("DSI%d", pll_14nm->id);
 
-	hw_data = devm_kzalloc(dev, sizeof(*hw_data) +
-			       NUM_PROVIDED_CLKS * sizeof(struct clk_hw *),
-			       GFP_KERNEL);
-	if (!hw_data)
-		return -ENOMEM;
-
 	snprintf(vco_name, 32, "dsi%dvco_clk", pll_14nm->id);
 	pll_14nm->base.clk_hw.init = &vco_init;
 
@@ -998,7 +965,7 @@ static int pll_14nm_register(struct dsi_pll_14nm *pll_14nm)
 		return PTR_ERR(hw);
 
 	hws[num++] = hw;
-	hw_data->hws[DSI_BYTE_PLL_CLK] = hw;
+	provided_clocks[DSI_BYTE_PLL_CLK] = hw;
 
 	snprintf(clk_name, 32, "dsi%dn1_postdivby2_clk", pll_14nm->id);
 	snprintf(parent, 32, "dsi%dn1_postdiv_clk", pll_14nm->id);
@@ -1025,20 +992,10 @@ static int pll_14nm_register(struct dsi_pll_14nm *pll_14nm)
 		return PTR_ERR(hw);
 
 	hws[num++] = hw;
-	hw_data->hws[DSI_PIXEL_PLL_CLK]	= hw;
+	provided_clocks[DSI_PIXEL_PLL_CLK]	= hw;
 
 	pll_14nm->num_hws = num;
 
-	hw_data->num = NUM_PROVIDED_CLKS;
-	pll_14nm->hw_data = hw_data;
-
-	ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
-				     pll_14nm->hw_data);
-	if (ret) {
-		DRM_DEV_ERROR(dev, "failed to register clk provider: %d\n", ret);
-		return ret;
-	}
-
 	return 0;
 }
 
@@ -1082,7 +1039,7 @@ static int dsi_pll_14nm_init(struct msm_dsi_phy *phy)
 
 	pll_14nm->vco_delay = 1;
 
-	ret = pll_14nm_register(pll_14nm);
+	ret = pll_14nm_register(pll_14nm, phy->provided_clocks->hws);
 	if (ret) {
 		DRM_DEV_ERROR(&pdev->dev, "failed to register PLL: %d\n", ret);
 		return ret;
@@ -1227,7 +1184,6 @@ const struct msm_dsi_phy_cfg dsi_phy_14nm_cfgs = {
 		.pll_init = dsi_pll_14nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_14nm_get_provider,
 		.destroy = dsi_pll_14nm_destroy,
 		.save_state = dsi_pll_14nm_save_state,
 		.restore_state = dsi_pll_14nm_restore_state,
@@ -1255,7 +1211,6 @@ const struct msm_dsi_phy_cfg dsi_phy_14nm_660_cfgs = {
 		.pll_init = dsi_pll_14nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_14nm_get_provider,
 		.destroy = dsi_pll_14nm_destroy,
 		.save_state = dsi_pll_14nm_save_state,
 		.restore_state = dsi_pll_14nm_restore_state,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
index d267b25e5da0..3446be318648 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
@@ -31,15 +31,10 @@
 #define POLL_MAX_READS			10
 #define POLL_TIMEOUT_US		50
 
-#define NUM_PROVIDED_CLKS		2
-
 #define VCO_REF_CLK_RATE		19200000
 #define VCO_MIN_RATE			350000000
 #define VCO_MAX_RATE			750000000
 
-#define DSI_BYTE_PLL_CLK		0
-#define DSI_PIXEL_PLL_CLK		1
-
 /* v2.0.0 28nm LP implementation */
 #define DSI_PHY_28NM_QUIRK_PHY_LP	BIT(0)
 
@@ -83,10 +78,6 @@ struct dsi_pll_28nm {
 	struct clk *clks[NUM_DSI_CLOCKS_MAX];
 	u32 num_clks;
 
-	/* clock-provider: */
-	struct clk *provided_clks[NUM_PROVIDED_CLKS];
-	struct clk_onecell_data clk_data;
-
 	struct pll_28nm_cached_state cached_state;
 };
 
@@ -495,38 +486,16 @@ static int dsi_pll_28nm_restore_state(struct msm_dsi_pll *pll)
 	return 0;
 }
 
-static int dsi_pll_28nm_get_provider(struct msm_dsi_pll *pll,
-				struct clk **byte_clk_provider,
-				struct clk **pixel_clk_provider)
-{
-	struct dsi_pll_28nm *pll_28nm = to_pll_28nm(pll);
-
-	if (byte_clk_provider)
-		*byte_clk_provider = pll_28nm->provided_clks[DSI_BYTE_PLL_CLK];
-	if (pixel_clk_provider)
-		*pixel_clk_provider =
-				pll_28nm->provided_clks[DSI_PIXEL_PLL_CLK];
-
-	return 0;
-}
-
 static void dsi_pll_28nm_destroy(struct msm_dsi_pll *pll)
 {
 	struct dsi_pll_28nm *pll_28nm = to_pll_28nm(pll);
-	int i;
-
-	msm_dsi_pll_helper_unregister_clks(pll_28nm->pdev,
-					pll_28nm->clks, pll_28nm->num_clks);
 
-	for (i = 0; i < NUM_PROVIDED_CLKS; i++)
-		pll_28nm->provided_clks[i] = NULL;
+	msm_dsi_pll_helper_unregister_clks(pll_28nm->clks, pll_28nm->num_clks);
 
 	pll_28nm->num_clks = 0;
-	pll_28nm->clk_data.clks = NULL;
-	pll_28nm->clk_data.clk_num = 0;
 }
 
-static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
+static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **provided_clocks)
 {
 	char clk_name[32], parent1[32], parent2[32], vco_name[32];
 	struct clk_init_data vco_init = {
@@ -538,9 +507,7 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
 	};
 	struct device *dev = &pll_28nm->pdev->dev;
 	struct clk **clks = pll_28nm->clks;
-	struct clk **provided_clks = pll_28nm->provided_clks;
 	int num = 0;
-	int ret;
 
 	DBG("%d", pll_28nm->id);
 
@@ -564,11 +531,11 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
 
 	snprintf(clk_name, 32, "dsi%dpll", pll_28nm->id);
 	snprintf(parent1, 32, "dsi%dvco_clk", pll_28nm->id);
-	clks[num++] = provided_clks[DSI_PIXEL_PLL_CLK] =
-			clk_register_divider(dev, clk_name,
+	clks[num++] = clk_register_divider(dev, clk_name,
 				parent1, 0, pll_28nm->mmio +
 				REG_DSI_28nm_PHY_PLL_POSTDIV3_CFG,
 				0, 8, 0, NULL);
+	provided_clocks[DSI_PIXEL_PLL_CLK] = __clk_get_hw(clks[num - 1]);
 
 	snprintf(clk_name, 32, "dsi%dbyte_mux", pll_28nm->id);
 	snprintf(parent1, 32, "dsi%dvco_clk", pll_28nm->id);
@@ -581,22 +548,12 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
 
 	snprintf(clk_name, 32, "dsi%dpllbyte", pll_28nm->id);
 	snprintf(parent1, 32, "dsi%dbyte_mux", pll_28nm->id);
-	clks[num++] = provided_clks[DSI_BYTE_PLL_CLK] =
-			clk_register_fixed_factor(dev, clk_name,
+	clks[num++] = clk_register_fixed_factor(dev, clk_name,
 				parent1, CLK_SET_RATE_PARENT, 1, 4);
+	provided_clocks[DSI_BYTE_PLL_CLK] = __clk_get_hw(clks[num - 1]);
 
 	pll_28nm->num_clks = num;
 
-	pll_28nm->clk_data.clk_num = NUM_PROVIDED_CLKS;
-	pll_28nm->clk_data.clks = provided_clks;
-
-	ret = of_clk_add_provider(dev->of_node,
-			of_clk_src_onecell_get, &pll_28nm->clk_data);
-	if (ret) {
-		DRM_DEV_ERROR(dev, "failed to register clk provider: %d\n", ret);
-		return ret;
-	}
-
 	return 0;
 }
 
@@ -625,14 +582,13 @@ static int dsi_pll_28nm_init(struct msm_dsi_phy *phy)
 	}
 
 	pll = &pll_28nm->base;
+	pll->cfg = phy->cfg;
 	if (phy->cfg->quirks & DSI_PHY_28NM_QUIRK_PHY_LP)
 		pll_28nm->vco_delay = 1000;
 	else
 		pll_28nm->vco_delay = 1;
 
-	pll->cfg = phy->cfg;
-
-	ret = pll_28nm_register(pll_28nm);
+	ret = pll_28nm_register(pll_28nm, phy->provided_clocks->hws);
 	if (ret) {
 		DRM_DEV_ERROR(&pdev->dev, "failed to register PLL: %d\n", ret);
 		return ret;
@@ -802,7 +758,6 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs = {
 		.pll_init = dsi_pll_28nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_28nm_get_provider,
 		.destroy = dsi_pll_28nm_destroy,
 		.save_state = dsi_pll_28nm_save_state,
 		.restore_state = dsi_pll_28nm_restore_state,
@@ -830,7 +785,6 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_famb_cfgs = {
 		.pll_init = dsi_pll_28nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_28nm_get_provider,
 		.destroy = dsi_pll_28nm_destroy,
 		.save_state = dsi_pll_28nm_save_state,
 		.restore_state = dsi_pll_28nm_restore_state,
@@ -858,7 +812,6 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs = {
 		.pll_init = dsi_pll_28nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_28nm_get_provider,
 		.destroy = dsi_pll_28nm_destroy,
 		.save_state = dsi_pll_28nm_save_state,
 		.restore_state = dsi_pll_28nm_restore_state,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
index 31e7910c6050..c4b433790cfb 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
@@ -39,15 +39,10 @@
 #define POLL_MAX_READS		8000
 #define POLL_TIMEOUT_US		1
 
-#define NUM_PROVIDED_CLKS	2
-
 #define VCO_REF_CLK_RATE	27000000
 #define VCO_MIN_RATE		600000000
 #define VCO_MAX_RATE		1200000000
 
-#define DSI_BYTE_PLL_CLK	0
-#define DSI_PIXEL_PLL_CLK	1
-
 #define VCO_PREF_DIV_RATIO	27
 
 struct pll_28nm_cached_state {
@@ -76,10 +71,6 @@ struct dsi_pll_28nm {
 	struct clk *clks[NUM_DSI_CLOCKS_MAX];
 	u32 num_clks;
 
-	/* clock-provider: */
-	struct clk *provided_clks[NUM_PROVIDED_CLKS];
-	struct clk_onecell_data clk_data;
-
 	struct pll_28nm_cached_state cached_state;
 };
 
@@ -377,30 +368,14 @@ static int dsi_pll_28nm_restore_state(struct msm_dsi_pll *pll)
 	return 0;
 }
 
-static int dsi_pll_28nm_get_provider(struct msm_dsi_pll *pll,
-				struct clk **byte_clk_provider,
-				struct clk **pixel_clk_provider)
-{
-	struct dsi_pll_28nm *pll_28nm = to_pll_28nm(pll);
-
-	if (byte_clk_provider)
-		*byte_clk_provider = pll_28nm->provided_clks[DSI_BYTE_PLL_CLK];
-	if (pixel_clk_provider)
-		*pixel_clk_provider =
-				pll_28nm->provided_clks[DSI_PIXEL_PLL_CLK];
-
-	return 0;
-}
-
 static void dsi_pll_28nm_destroy(struct msm_dsi_pll *pll)
 {
 	struct dsi_pll_28nm *pll_28nm = to_pll_28nm(pll);
 
-	msm_dsi_pll_helper_unregister_clks(pll_28nm->pdev,
-					pll_28nm->clks, pll_28nm->num_clks);
+	msm_dsi_pll_helper_unregister_clks(pll_28nm->clks, pll_28nm->num_clks);
 }
 
-static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
+static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm, struct clk_hw **provided_clocks)
 {
 	char *clk_name, *parent_name, *vco_name;
 	struct clk_init_data vco_init = {
@@ -411,10 +386,9 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
 	};
 	struct device *dev = &pll_28nm->pdev->dev;
 	struct clk **clks = pll_28nm->clks;
-	struct clk **provided_clks = pll_28nm->provided_clks;
 	struct clk_bytediv *bytediv;
 	struct clk_init_data bytediv_init = { };
-	int ret, num = 0;
+	int num = 0;
 
 	DBG("%d", pll_28nm->id);
 
@@ -426,10 +400,6 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
 	if (!vco_name)
 		return -ENOMEM;
 
-	parent_name = devm_kzalloc(dev, 32, GFP_KERNEL);
-	if (!parent_name)
-		return -ENOMEM;
-
 	clk_name = devm_kzalloc(dev, 32, GFP_KERNEL);
 	if (!clk_name)
 		return -ENOMEM;
@@ -457,29 +427,19 @@ static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
 	bytediv_init.num_parents = 1;
 
 	/* DIV2 */
-	clks[num++] = provided_clks[DSI_BYTE_PLL_CLK] =
-			clk_register(dev, &bytediv->hw);
+	clks[num++] = clk_register(dev, &bytediv->hw);
+	provided_clocks[DSI_BYTE_PLL_CLK] = __clk_get_hw(clks[num - 1]);
 
 	snprintf(clk_name, 32, "dsi%dpll", pll_28nm->id);
 	/* DIV3 */
-	clks[num++] = provided_clks[DSI_PIXEL_PLL_CLK] =
-			clk_register_divider(dev, clk_name,
+	clks[num++] = clk_register_divider(dev, clk_name,
 				parent_name, 0, pll_28nm->mmio +
 				REG_DSI_28nm_8960_PHY_PLL_CTRL_10,
 				0, 8, 0, NULL);
+	provided_clocks[DSI_PIXEL_PLL_CLK] = __clk_get_hw(clks[num - 1]);
 
 	pll_28nm->num_clks = num;
 
-	pll_28nm->clk_data.clk_num = NUM_PROVIDED_CLKS;
-	pll_28nm->clk_data.clks = provided_clks;
-
-	ret = of_clk_add_provider(dev->of_node,
-			of_clk_src_onecell_get, &pll_28nm->clk_data);
-	if (ret) {
-		DRM_DEV_ERROR(dev, "failed to register clk provider: %d\n", ret);
-		return ret;
-	}
-
 	return 0;
 }
 
@@ -511,7 +471,7 @@ static int dsi_pll_28nm_8960_init(struct msm_dsi_phy *phy)
 
 	pll->cfg = phy->cfg;
 
-	ret = pll_28nm_register(pll_28nm);
+	ret = pll_28nm_register(pll_28nm, phy->provided_clocks->hws);
 	if (ret) {
 		DRM_DEV_ERROR(&pdev->dev, "failed to register PLL: %d\n", ret);
 		return ret;
@@ -702,7 +662,6 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_8960_cfgs = {
 		.pll_init = dsi_pll_28nm_8960_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_28nm_get_provider,
 		.destroy = dsi_pll_28nm_destroy,
 		.save_state = dsi_pll_28nm_save_state,
 		.restore_state = dsi_pll_28nm_restore_state,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
index 5acdfe1f63be..0b601afa9e49 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
@@ -36,10 +36,6 @@
  *                                                  dsi0_pll_post_out_div_clk
  */
 
-#define DSI_BYTE_PLL_CLK		0
-#define DSI_PIXEL_PLL_CLK		1
-#define NUM_PROVIDED_CLKS		2
-
 #define VCO_REF_CLK_RATE		19200000
 
 struct dsi_pll_regs {
@@ -116,9 +112,6 @@ struct dsi_pll_7nm {
 	struct clk_hw *pclk_mux_hw;
 	struct clk_hw *out_dsiclk_hw;
 
-	/* clock-provider: */
-	struct clk_hw_onecell_data *hw_data;
-
 	struct pll_7nm_cached_state cached_state;
 
 	enum msm_dsi_phy_usecase uc;
@@ -646,30 +639,11 @@ static int dsi_pll_7nm_set_usecase(struct msm_dsi_pll *pll,
 	return 0;
 }
 
-static int dsi_pll_7nm_get_provider(struct msm_dsi_pll *pll,
-				     struct clk **byte_clk_provider,
-				     struct clk **pixel_clk_provider)
-{
-	struct dsi_pll_7nm *pll_7nm = to_pll_7nm(pll);
-	struct clk_hw_onecell_data *hw_data = pll_7nm->hw_data;
-
-	DBG("DSI PLL%d", pll_7nm->id);
-
-	if (byte_clk_provider)
-		*byte_clk_provider = hw_data->hws[DSI_BYTE_PLL_CLK]->clk;
-	if (pixel_clk_provider)
-		*pixel_clk_provider = hw_data->hws[DSI_PIXEL_PLL_CLK]->clk;
-
-	return 0;
-}
-
 static void dsi_pll_7nm_destroy(struct msm_dsi_pll *pll)
 {
 	struct dsi_pll_7nm *pll_7nm = to_pll_7nm(pll);
-	struct device *dev = &pll_7nm->pdev->dev;
 
 	DBG("DSI PLL%d", pll_7nm->id);
-	of_clk_del_provider(dev->of_node);
 
 	clk_hw_unregister_divider(pll_7nm->out_dsiclk_hw);
 	clk_hw_unregister_mux(pll_7nm->pclk_mux_hw);
@@ -687,7 +661,7 @@ static void dsi_pll_7nm_destroy(struct msm_dsi_pll *pll)
  * state to follow the master PLL's divider/mux state. Therefore, we don't
  * require special clock ops that also configure the slave PLL registers
  */
-static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
+static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provided_clocks)
 {
 	char clk_name[32], parent[32], vco_name[32];
 	char parent2[32], parent3[32], parent4[32];
@@ -699,18 +673,11 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
 		.ops = &clk_ops_dsi_pll_7nm_vco,
 	};
 	struct device *dev = &pll_7nm->pdev->dev;
-	struct clk_hw_onecell_data *hw_data;
 	struct clk_hw *hw;
 	int ret;
 
 	DBG("DSI%d", pll_7nm->id);
 
-	hw_data = devm_kzalloc(dev, sizeof(*hw_data) +
-			       NUM_PROVIDED_CLKS * sizeof(struct clk_hw *),
-			       GFP_KERNEL);
-	if (!hw_data)
-		return -ENOMEM;
-
 	snprintf(vco_name, 32, "dsi%dvco_clk", pll_7nm->id);
 	pll_7nm->base.clk_hw.init = &vco_init;
 
@@ -762,7 +729,7 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
 	}
 
 	pll_7nm->byte_clk_hw = hw;
-	hw_data->hws[DSI_BYTE_PLL_CLK] = hw;
+	provided_clocks[DSI_BYTE_PLL_CLK] = hw;
 
 	snprintf(clk_name, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->id);
 	snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->id);
@@ -822,22 +789,10 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
 	}
 
 	pll_7nm->out_dsiclk_hw = hw;
-	hw_data->hws[DSI_PIXEL_PLL_CLK] = hw;
-
-	hw_data->num = NUM_PROVIDED_CLKS;
-	pll_7nm->hw_data = hw_data;
-
-	ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
-				     pll_7nm->hw_data);
-	if (ret) {
-		DRM_DEV_ERROR(dev, "failed to register clk provider: %d\n", ret);
-		goto err_dsiclk_hw;
-	}
+	provided_clocks[DSI_PIXEL_PLL_CLK] = hw;
 
 	return 0;
 
-err_dsiclk_hw:
-	clk_hw_unregister_divider(pll_7nm->out_dsiclk_hw);
 err_pclk_mux_hw:
 	clk_hw_unregister_mux(pll_7nm->pclk_mux_hw);
 err_post_out_div_clk_hw:
@@ -893,7 +848,7 @@ static int dsi_pll_7nm_init(struct msm_dsi_phy *phy)
 
 	pll_7nm->vco_delay = 1;
 
-	ret = pll_7nm_register(pll_7nm);
+	ret = pll_7nm_register(pll_7nm, phy->provided_clocks->hws);
 	if (ret) {
 		DRM_DEV_ERROR(&pdev->dev, "failed to register PLL: %d\n", ret);
 		return ret;
@@ -1138,7 +1093,6 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs = {
 		.pll_init = dsi_pll_7nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_7nm_get_provider,
 		.destroy = dsi_pll_7nm_destroy,
 		.save_state = dsi_pll_7nm_save_state,
 		.restore_state = dsi_pll_7nm_restore_state,
@@ -1165,7 +1119,6 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = {
 		.pll_init = dsi_pll_7nm_init,
 	},
 	.pll_ops = {
-		.get_provider = dsi_pll_7nm_get_provider,
 		.destroy = dsi_pll_7nm_destroy,
 		.save_state = dsi_pll_7nm_save_state,
 		.restore_state = dsi_pll_7nm_restore_state,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c
index 98ee4560581a..914e95435dcb 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.c
@@ -57,11 +57,8 @@ void msm_dsi_pll_helper_clk_unprepare(struct clk_hw *hw)
 	pll->pll_on = false;
 }
 
-void msm_dsi_pll_helper_unregister_clks(struct platform_device *pdev,
-					struct clk **clks, u32 num_clks)
+void msm_dsi_pll_helper_unregister_clks(struct clk **clks, u32 num_clks)
 {
-	of_clk_del_provider(pdev->dev.of_node);
-
 	if (!num_clks || !clks)
 		return;
 
@@ -74,17 +71,6 @@ void msm_dsi_pll_helper_unregister_clks(struct platform_device *pdev,
 /*
  * DSI PLL API
  */
-int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
-	struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
-{
-	if (pll->cfg->pll_ops.get_provider)
-		return pll->cfg->pll_ops.get_provider(pll,
-					byte_clk_provider,
-					pixel_clk_provider);
-
-	return -EINVAL;
-}
-
 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
 {
 	if (pll->cfg->pll_ops.destroy)
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h
index 8306911f8318..d819a886beb8 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_pll.h
@@ -55,8 +55,7 @@ long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
 int msm_dsi_pll_helper_clk_prepare(struct clk_hw *hw);
 void msm_dsi_pll_helper_clk_unprepare(struct clk_hw *hw);
 /* misc */
-void msm_dsi_pll_helper_unregister_clks(struct platform_device *pdev,
-					struct clk **clks, u32 num_clks);
+void msm_dsi_pll_helper_unregister_clks(struct clk **clks, u32 num_clks);
 
 #endif /* __DSI_PLL_H__ */