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From:   Abel Vesa <abel.vesa@linaro.org>
Date:   Thu, 14 Dec 2023 18:49:38 +0200
Subject: [PATCH v2 09/10] clk: qcom: Add TCSR clock driver for x1e80100
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Message-Id: <20231214-x1e80100-clock-controllers-v2-9-2b0739bebd27@linaro.org>
References: <20231214-x1e80100-clock-controllers-v2-0-2b0739bebd27@linaro.org>
In-Reply-To: <20231214-x1e80100-clock-controllers-v2-0-2b0739bebd27@linaro.org>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc:     linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
        Abel Vesa <abel.vesa@linaro.org>
Precedence: bulk

The TCSR clock controller found on X1E80100 provides refclks
for PCIE, USB and UFS. Add clock driver for it.

Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/clk/qcom/Kconfig           |   8 ++
 drivers/clk/qcom/Makefile          |   1 +
 drivers/clk/qcom/tcsrcc-x1e80100.c | 285 +++++++++++++++++++++++++++++++++++++
 3 files changed, 294 insertions(+)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index d66934ca5e94..0633728c870c 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -49,6 +49,14 @@ config CLK_X1E80100_GPUCC
 	  Say Y if you want to support graphics controller devices and
 	  functionality such as 3D graphics.
 
+config CLK_X1E80100_TCSRCC
+	tristate "X1E80100 TCSR Clock Controller"
+	depends on ARM64 || COMPILE_TEST
+	select QCOM_GDSC
+	help
+	  Support for the TCSR clock controller on X1E80100 devices.
+	  Say Y if you want to use peripheral devices such as SD/UFS.
+
 config QCOM_A53PLL
 	tristate "MSM8916 A53 PLL"
 	help
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index a037a29e9d61..750b084553c6 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_CLK_GFM_LPASS_SM8250) += lpass-gfm-sm8250.o
 obj-$(CONFIG_CLK_X1E80100_DISPCC) += dispcc-x1e80100.o
 obj-$(CONFIG_CLK_X1E80100_GCC) += gcc-x1e80100.o
 obj-$(CONFIG_CLK_X1E80100_GPUCC) += gpucc-x1e80100.o
+obj-$(CONFIG_CLK_X1E80100_TCSRCC) += tcsrcc-x1e80100.o
 obj-$(CONFIG_IPQ_APSS_PLL) += apss-ipq-pll.o
 obj-$(CONFIG_IPQ_APSS_6018) += apss-ipq6018.o
 obj-$(CONFIG_IPQ_GCC_4019) += gcc-ipq4019.o
diff --git a/drivers/clk/qcom/tcsrcc-x1e80100.c b/drivers/clk/qcom/tcsrcc-x1e80100.c
new file mode 100644
index 000000000000..a815e10ef6f0
--- /dev/null
+++ b/drivers/clk/qcom/tcsrcc-x1e80100.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2023, Linaro Limited
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,x1e80100-tcsr.h>
+
+#include "clk-branch.h"
+#include "clk-regmap.h"
+#include "common.h"
+#include "reset.h"
+
+enum {
+	DT_BI_TCXO_PAD,
+};
+
+static struct clk_branch tcsr_edp_clkref_en = {
+	.halt_reg = 0x15130,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15130,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "tcsr_edp_clkref_en",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_pcie_2l_4_clkref_en = {
+	.halt_reg = 0x15100,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15100,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_pcie_2l_4_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_pcie_2l_5_clkref_en = {
+	.halt_reg = 0x15104,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15104,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_pcie_2l_5_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_pcie_8l_clkref_en = {
+	.halt_reg = 0x15108,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15108,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_pcie_8l_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb3_mp0_clkref_en = {
+	.halt_reg = 0x1510c,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x1510c,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb3_mp0_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb3_mp1_clkref_en = {
+	.halt_reg = 0x15110,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15110,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb3_mp1_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb2_1_clkref_en = {
+	.halt_reg = 0x15114,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15114,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb2_1_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_ufs_phy_clkref_en = {
+	.halt_reg = 0x15118,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15118,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_ufs_phy_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb4_1_clkref_en = {
+	.halt_reg = 0x15120,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15120,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb4_1_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb4_2_clkref_en = {
+	.halt_reg = 0x15124,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15124,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb4_2_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb2_2_clkref_en = {
+	.halt_reg = 0x15128,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x15128,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb2_2_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_pcie_4l_clkref_en = {
+	.halt_reg = 0x1512c,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x1512c,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_pcie_4l_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_regmap *tcsr_cc_x1e80100_clocks[] = {
+	[TCSR_EDP_CLKREF_EN] = &tcsr_edp_clkref_en.clkr,
+	[TCSR_PCIE_2L_4_CLKREF_EN] = &tcsr_pcie_2l_4_clkref_en.clkr,
+	[TCSR_PCIE_2L_5_CLKREF_EN] = &tcsr_pcie_2l_5_clkref_en.clkr,
+	[TCSR_PCIE_8L_CLKREF_EN] = &tcsr_pcie_8l_clkref_en.clkr,
+	[TCSR_USB3_MP0_CLKREF_EN] = &tcsr_usb3_mp0_clkref_en.clkr,
+	[TCSR_USB3_MP1_CLKREF_EN] = &tcsr_usb3_mp1_clkref_en.clkr,
+	[TCSR_USB2_1_CLKREF_EN] = &tcsr_usb2_1_clkref_en.clkr,
+	[TCSR_UFS_PHY_CLKREF_EN] = &tcsr_ufs_phy_clkref_en.clkr,
+	[TCSR_USB4_1_CLKREF_EN] = &tcsr_usb4_1_clkref_en.clkr,
+	[TCSR_USB4_2_CLKREF_EN] = &tcsr_usb4_2_clkref_en.clkr,
+	[TCSR_USB2_2_CLKREF_EN] = &tcsr_usb2_2_clkref_en.clkr,
+	[TCSR_PCIE_4L_CLKREF_EN] = &tcsr_pcie_4l_clkref_en.clkr,
+};
+
+static const struct regmap_config tcsr_cc_x1e80100_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = 0x2f000,
+	.fast_io = true,
+};
+
+static const struct qcom_cc_desc tcsr_cc_x1e80100_desc = {
+	.config = &tcsr_cc_x1e80100_regmap_config,
+	.clks = tcsr_cc_x1e80100_clocks,
+	.num_clks = ARRAY_SIZE(tcsr_cc_x1e80100_clocks),
+};
+
+static const struct of_device_id tcsr_cc_x1e80100_match_table[] = {
+	{ .compatible = "qcom,x1e80100-tcsr" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tcsr_cc_x1e80100_match_table);
+
+static int tcsr_cc_x1e80100_probe(struct platform_device *pdev)
+{
+	return qcom_cc_probe(pdev, &tcsr_cc_x1e80100_desc);
+}
+
+static struct platform_driver tcsr_cc_x1e80100_driver = {
+	.probe = tcsr_cc_x1e80100_probe,
+	.driver = {
+		.name = "tcsr_cc-x1e80100",
+		.of_match_table = tcsr_cc_x1e80100_match_table,
+	},
+};
+
+static int __init tcsr_cc_x1e80100_init(void)
+{
+	return platform_driver_register(&tcsr_cc_x1e80100_driver);
+}
+subsys_initcall(tcsr_cc_x1e80100_init);
+
+static void __exit tcsr_cc_x1e80100_exit(void)
+{
+	platform_driver_unregister(&tcsr_cc_x1e80100_driver);
+}
+module_exit(tcsr_cc_x1e80100_exit);
+
+MODULE_DESCRIPTION("QTI TCSRCC X1E80100 Driver");
+MODULE_LICENSE("GPL");

-- 
2.34.1