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From:   Neil Armstrong <neil.armstrong@linaro.org>
Date:   Mon, 30 Oct 2023 10:57:54 +0100
Subject: [PATCH v2 07/10] clk: qcom: add the SM8650 TCSR Clock Controller
 driver
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Message-Id: <20231030-topic-sm8650-upstream-clocks-v2-7-144333e086a2@linaro.org>
References: <20231030-topic-sm8650-upstream-clocks-v2-0-144333e086a2@linaro.org>
In-Reply-To: <20231030-topic-sm8650-upstream-clocks-v2-0-144333e086a2@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>,
        Taniya Das <quic_tdas@quicinc.com>
Cc:     linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Precedence: bulk

Add TCSR Clock Controller support for SM8650 platform.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 drivers/clk/qcom/Kconfig         |   8 ++
 drivers/clk/qcom/Makefile        |   1 +
 drivers/clk/qcom/tcsrcc-sm8650.c | 182 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 191 insertions(+)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 69ac4e052ed0..13d739166c08 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -1036,6 +1036,14 @@ config SM_TCSRCC_8550
 	  Support for the TCSR clock controller on SM8550 devices.
 	  Say Y if you want to use peripheral devices such as SD/UFS.
 
+config SM_TCSRCC_8650
+	tristate "SM8650 TCSR Clock Controller"
+	depends on ARM64 || COMPILE_TEST
+	select QCOM_GDSC
+	help
+	  Support for the TCSR clock controller on SM8650 devices.
+	  Say Y if you want to use peripheral devices such as SD/UFS.
+
 config SM_VIDEOCC_8150
 	tristate "SM8150 Video Clock Controller"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 5363ba13f89b..6ec026a137ec 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -132,6 +132,7 @@ obj-$(CONFIG_SM_GPUCC_8350) += gpucc-sm8350.o
 obj-$(CONFIG_SM_GPUCC_8450) += gpucc-sm8450.o
 obj-$(CONFIG_SM_GPUCC_8550) += gpucc-sm8550.o
 obj-$(CONFIG_SM_TCSRCC_8550) += tcsrcc-sm8550.o
+obj-$(CONFIG_SM_TCSRCC_8650) += tcsrcc-sm8650.o
 obj-$(CONFIG_SM_VIDEOCC_8150) += videocc-sm8150.o
 obj-$(CONFIG_SM_VIDEOCC_8250) += videocc-sm8250.o
 obj-$(CONFIG_SM_VIDEOCC_8350) += videocc-sm8350.o
diff --git a/drivers/clk/qcom/tcsrcc-sm8650.c b/drivers/clk/qcom/tcsrcc-sm8650.c
new file mode 100644
index 000000000000..11c7d6df48c7
--- /dev/null
+++ b/drivers/clk/qcom/tcsrcc-sm8650.c
@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ * 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,sm8650-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_pcie_0_clkref_en = {
+	.halt_reg = 0x31100,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x31100,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_pcie_0_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_1_clkref_en = {
+	.halt_reg = 0x31114,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x31114,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_pcie_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_clkref_en = {
+	.halt_reg = 0x31110,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x31110,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_ufs_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_pad_clkref_en = {
+	.halt_reg = 0x31104,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x31104,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_ufs_pad_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_clkref_en = {
+	.halt_reg = 0x31118,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x31118,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb2_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_clkref_en = {
+	.halt_reg = 0x31108,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x31108,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "tcsr_usb3_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_sm8650_clocks[] = {
+	[TCSR_PCIE_0_CLKREF_EN] = &tcsr_pcie_0_clkref_en.clkr,
+	[TCSR_PCIE_1_CLKREF_EN] = &tcsr_pcie_1_clkref_en.clkr,
+	[TCSR_UFS_CLKREF_EN] = &tcsr_ufs_clkref_en.clkr,
+	[TCSR_UFS_PAD_CLKREF_EN] = &tcsr_ufs_pad_clkref_en.clkr,
+	[TCSR_USB2_CLKREF_EN] = &tcsr_usb2_clkref_en.clkr,
+	[TCSR_USB3_CLKREF_EN] = &tcsr_usb3_clkref_en.clkr,
+};
+
+static const struct regmap_config tcsr_cc_sm8650_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = 0x3b000,
+	.fast_io = true,
+};
+
+static const struct qcom_cc_desc tcsr_cc_sm8650_desc = {
+	.config = &tcsr_cc_sm8650_regmap_config,
+	.clks = tcsr_cc_sm8650_clocks,
+	.num_clks = ARRAY_SIZE(tcsr_cc_sm8650_clocks),
+};
+
+static const struct of_device_id tcsr_cc_sm8650_match_table[] = {
+	{ .compatible = "qcom,sm8650-tcsr" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tcsr_cc_sm8650_match_table);
+
+static int tcsr_cc_sm8650_probe(struct platform_device *pdev)
+{
+	return qcom_cc_probe(pdev, &tcsr_cc_sm8650_desc);
+}
+
+static struct platform_driver tcsr_cc_sm8650_driver = {
+	.probe = tcsr_cc_sm8650_probe,
+	.driver = {
+		.name = "tcsr_cc-sm8650",
+		.of_match_table = tcsr_cc_sm8650_match_table,
+	},
+};
+
+static int __init tcsr_cc_sm8650_init(void)
+{
+	return platform_driver_register(&tcsr_cc_sm8650_driver);
+}
+subsys_initcall(tcsr_cc_sm8650_init);
+
+static void __exit tcsr_cc_sm8650_exit(void)
+{
+	platform_driver_unregister(&tcsr_cc_sm8650_driver);
+}
+module_exit(tcsr_cc_sm8650_exit);
+
+MODULE_DESCRIPTION("QTI TCSRCC SM8650 Driver");
+MODULE_LICENSE("GPL");

-- 
2.34.1