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path: root/drivers/clk/qcom/mss-sc7180.c
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Diffstat (limited to 'drivers/clk/qcom/mss-sc7180.c')
-rw-r--r--drivers/clk/qcom/mss-sc7180.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/clk/qcom/mss-sc7180.c b/drivers/clk/qcom/mss-sc7180.c
new file mode 100644
index 0000000000..d106bc6547
--- /dev/null
+++ b/drivers/clk/qcom/mss-sc7180.c
@@ -0,0 +1,140 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/pm_clock.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,mss-sc7180.h>
+
+#include "clk-regmap.h"
+#include "clk-branch.h"
+#include "common.h"
+
+static struct clk_branch mss_axi_nav_clk = {
+ .halt_reg = 0x20bc,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x20bc,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "mss_axi_nav_clk",
+ .parent_data = &(const struct clk_parent_data){
+ .fw_name = "gcc_mss_nav_axi",
+ },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch mss_axi_crypto_clk = {
+ .halt_reg = 0x20cc,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x20cc,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "mss_axi_crypto_clk",
+ .parent_data = &(const struct clk_parent_data){
+ .fw_name = "gcc_mss_mfab_axis",
+ },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static const struct regmap_config mss_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .fast_io = true,
+ .max_register = 0x41aa0cc,
+};
+
+static struct clk_regmap *mss_sc7180_clocks[] = {
+ [MSS_AXI_CRYPTO_CLK] = &mss_axi_crypto_clk.clkr,
+ [MSS_AXI_NAV_CLK] = &mss_axi_nav_clk.clkr,
+};
+
+static const struct qcom_cc_desc mss_sc7180_desc = {
+ .config = &mss_regmap_config,
+ .clks = mss_sc7180_clocks,
+ .num_clks = ARRAY_SIZE(mss_sc7180_clocks),
+};
+
+static int mss_sc7180_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = devm_pm_runtime_enable(&pdev->dev);
+ if (ret)
+ return ret;
+
+ ret = devm_pm_clk_create(&pdev->dev);
+ if (ret)
+ return ret;
+
+ ret = pm_clk_add(&pdev->dev, "cfg_ahb");
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to acquire iface clock\n");
+ return ret;
+ }
+
+ ret = pm_runtime_resume_and_get(&pdev->dev);
+ if (ret)
+ return ret;
+
+ ret = qcom_cc_probe(pdev, &mss_sc7180_desc);
+ if (ret < 0)
+ goto err_put_rpm;
+
+ pm_runtime_put(&pdev->dev);
+
+ return 0;
+
+err_put_rpm:
+ pm_runtime_put_sync(&pdev->dev);
+
+ return ret;
+}
+
+static const struct dev_pm_ops mss_sc7180_pm_ops = {
+ SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL)
+};
+
+static const struct of_device_id mss_sc7180_match_table[] = {
+ { .compatible = "qcom,sc7180-mss" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mss_sc7180_match_table);
+
+static struct platform_driver mss_sc7180_driver = {
+ .probe = mss_sc7180_probe,
+ .driver = {
+ .name = "sc7180-mss",
+ .of_match_table = mss_sc7180_match_table,
+ .pm = &mss_sc7180_pm_ops,
+ },
+};
+
+static int __init mss_sc7180_init(void)
+{
+ return platform_driver_register(&mss_sc7180_driver);
+}
+subsys_initcall(mss_sc7180_init);
+
+static void __exit mss_sc7180_exit(void)
+{
+ platform_driver_unregister(&mss_sc7180_driver);
+}
+module_exit(mss_sc7180_exit);
+
+MODULE_DESCRIPTION("QTI MSS SC7180 Driver");
+MODULE_LICENSE("GPL v2");