openwrt/target/linux/airoha/patches-6.6/019-02-v6.11-clk-en7523-Remove-pcie-prepare-unpreare-callbacks-fo.patch

From db7a4a11e8be375b0a9c159f688e0cea49eacc5d Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Thu, 27 Jun 2024 13:04:24 +0200
Subject: [PATCH 2/4] clk: en7523: Remove pcie prepare/unpreare callbacks for
 EN7581 SoC

Get rid of prepare and unpreare callbacks for PCIe clock since they can
be modeled as a reset line cosumed by the PCIe driver
(pcie-mediatek-gen3)

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Zhengping Zhang <zhengping.zhang@airoha.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/16df149975514d3030499c48fc1c64f090093595.1719485847.git.lorenzo@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
 drivers/clk/clk-en7523.c | 41 ++--------------------------------------
 1 file changed, 2 insertions(+), 39 deletions(-)

--- a/drivers/clk/clk-en7523.c
+++ b/drivers/clk/clk-en7523.c
@@ -366,9 +366,8 @@ static struct clk_hw *en7523_register_pc
 	cg->base = np_base;
 	cg->hw.init = &init;
 
-	if (init.ops->disable)
-		init.ops->disable(&cg->hw);
-	init.ops->unprepare(&cg->hw);
+	if (init.ops->unprepare)
+		init.ops->unprepare(&cg->hw);
 
 	if (clk_hw_register(dev, &cg->hw))
 		return NULL;
@@ -386,23 +385,6 @@ static int en7581_pci_is_enabled(struct
 	return (val & mask) == mask;
 }
 
-static int en7581_pci_prepare(struct clk_hw *hw)
-{
-	struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
-	void __iomem *np_base = cg->base;
-	u32 val, mask;
-
-	mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 |
-	       REG_RESET_CONTROL_PCIEHB;
-	val = readl(np_base + REG_RESET_CONTROL1);
-	writel(val & ~mask, np_base + REG_RESET_CONTROL1);
-	val = readl(np_base + REG_RESET_CONTROL2);
-	writel(val & ~REG_RESET2_CONTROL_PCIE2, np_base + REG_RESET_CONTROL2);
-	usleep_range(5000, 10000);
-
-	return 0;
-}
-
 static int en7581_pci_enable(struct clk_hw *hw)
 {
 	struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
@@ -419,23 +401,6 @@ static int en7581_pci_enable(struct clk_
 	return 0;
 }
 
-static void en7581_pci_unprepare(struct clk_hw *hw)
-{
-	struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
-	void __iomem *np_base = cg->base;
-	u32 val, mask;
-
-	mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 |
-	       REG_RESET_CONTROL_PCIEHB;
-	val = readl(np_base + REG_RESET_CONTROL1);
-	writel(val | mask, np_base + REG_RESET_CONTROL1);
-	mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2;
-	writel(val | mask, np_base + REG_RESET_CONTROL1);
-	val = readl(np_base + REG_RESET_CONTROL2);
-	writel(val | REG_RESET_CONTROL_PCIE2, np_base + REG_RESET_CONTROL2);
-	msleep(100);
-}
-
 static void en7581_pci_disable(struct clk_hw *hw)
 {
 	struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
@@ -656,9 +621,7 @@ static const struct en_clk_soc_data en75
 static const struct en_clk_soc_data en7581_data = {
 	.pcie_ops = {
 		.is_enabled = en7581_pci_is_enabled,
-		.prepare = en7581_pci_prepare,
 		.enable = en7581_pci_enable,
-		.unprepare = en7581_pci_unprepare,
 		.disable = en7581_pci_disable,
 	},
 	.reset = {