[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/clk/clk-s2mps11.c b/src/kernel/linux/v4.14/drivers/clk/clk-s2mps11.c
new file mode 100644
index 0000000..f5d74e8
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/clk/clk-s2mps11.c
@@ -0,0 +1,301 @@
+/*
+ * clk-s2mps11.c - Clock driver for S2MPS11.
+ *
+ * Copyright (C) 2013,2014 Samsung Electornics
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/clkdev.h>
+#include <linux/regmap.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/samsung/s2mps11.h>
+#include <linux/mfd/samsung/s2mps13.h>
+#include <linux/mfd/samsung/s2mps14.h>
+#include <linux/mfd/samsung/s5m8767.h>
+#include <linux/mfd/samsung/core.h>
+
+enum {
+ S2MPS11_CLK_AP = 0,
+ S2MPS11_CLK_CP,
+ S2MPS11_CLK_BT,
+ S2MPS11_CLKS_NUM,
+};
+
+struct s2mps11_clk {
+ struct sec_pmic_dev *iodev;
+ struct device_node *clk_np;
+ struct clk_hw hw;
+ struct clk *clk;
+ struct clk_lookup *lookup;
+ u32 mask;
+ unsigned int reg;
+};
+
+static struct s2mps11_clk *to_s2mps11_clk(struct clk_hw *hw)
+{
+ return container_of(hw, struct s2mps11_clk, hw);
+}
+
+static int s2mps11_clk_prepare(struct clk_hw *hw)
+{
+ struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
+
+ return regmap_update_bits(s2mps11->iodev->regmap_pmic,
+ s2mps11->reg,
+ s2mps11->mask, s2mps11->mask);
+}
+
+static void s2mps11_clk_unprepare(struct clk_hw *hw)
+{
+ struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
+
+ regmap_update_bits(s2mps11->iodev->regmap_pmic, s2mps11->reg,
+ s2mps11->mask, ~s2mps11->mask);
+}
+
+static int s2mps11_clk_is_prepared(struct clk_hw *hw)
+{
+ int ret;
+ u32 val;
+ struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
+
+ ret = regmap_read(s2mps11->iodev->regmap_pmic,
+ s2mps11->reg, &val);
+ if (ret < 0)
+ return -EINVAL;
+
+ return val & s2mps11->mask;
+}
+
+static unsigned long s2mps11_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ return 32768;
+}
+
+static struct clk_ops s2mps11_clk_ops = {
+ .prepare = s2mps11_clk_prepare,
+ .unprepare = s2mps11_clk_unprepare,
+ .is_prepared = s2mps11_clk_is_prepared,
+ .recalc_rate = s2mps11_clk_recalc_rate,
+};
+
+/* This s2mps11_clks_init tructure is common to s2mps11, s2mps13 and s2mps14 */
+static struct clk_init_data s2mps11_clks_init[S2MPS11_CLKS_NUM] = {
+ [S2MPS11_CLK_AP] = {
+ .name = "s2mps11_ap",
+ .ops = &s2mps11_clk_ops,
+ },
+ [S2MPS11_CLK_CP] = {
+ .name = "s2mps11_cp",
+ .ops = &s2mps11_clk_ops,
+ },
+ [S2MPS11_CLK_BT] = {
+ .name = "s2mps11_bt",
+ .ops = &s2mps11_clk_ops,
+ },
+};
+
+static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev,
+ struct clk_init_data *clks_init)
+{
+ struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct device_node *clk_np;
+ int i;
+
+ if (!iodev->dev->of_node)
+ return ERR_PTR(-EINVAL);
+
+ clk_np = of_get_child_by_name(iodev->dev->of_node, "clocks");
+ if (!clk_np) {
+ dev_err(&pdev->dev, "could not find clock sub-node\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ for (i = 0; i < S2MPS11_CLKS_NUM; i++)
+ of_property_read_string_index(clk_np, "clock-output-names", i,
+ &clks_init[i].name);
+
+ return clk_np;
+}
+
+static int s2mps11_clk_probe(struct platform_device *pdev)
+{
+ struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct s2mps11_clk *s2mps11_clks;
+ struct clk_hw_onecell_data *clk_data;
+ unsigned int s2mps11_reg;
+ int i, ret = 0;
+ enum sec_device_type hwid = platform_get_device_id(pdev)->driver_data;
+
+ s2mps11_clks = devm_kcalloc(&pdev->dev, S2MPS11_CLKS_NUM,
+ sizeof(*s2mps11_clks), GFP_KERNEL);
+ if (!s2mps11_clks)
+ return -ENOMEM;
+
+ clk_data = devm_kzalloc(&pdev->dev, sizeof(*clk_data) +
+ sizeof(*clk_data->hws) * S2MPS11_CLKS_NUM,
+ GFP_KERNEL);
+ if (!clk_data)
+ return -ENOMEM;
+
+ switch (hwid) {
+ case S2MPS11X:
+ s2mps11_reg = S2MPS11_REG_RTC_CTRL;
+ break;
+ case S2MPS13X:
+ s2mps11_reg = S2MPS13_REG_RTCCTRL;
+ break;
+ case S2MPS14X:
+ s2mps11_reg = S2MPS14_REG_RTCCTRL;
+ break;
+ case S5M8767X:
+ s2mps11_reg = S5M8767_REG_CTRL1;
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid device type\n");
+ return -EINVAL;
+ }
+
+ /* Store clocks of_node in first element of s2mps11_clks array */
+ s2mps11_clks->clk_np = s2mps11_clk_parse_dt(pdev, s2mps11_clks_init);
+ if (IS_ERR(s2mps11_clks->clk_np))
+ return PTR_ERR(s2mps11_clks->clk_np);
+
+ for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
+ if (i == S2MPS11_CLK_CP && hwid == S2MPS14X)
+ continue; /* Skip clocks not present in some devices */
+ s2mps11_clks[i].iodev = iodev;
+ s2mps11_clks[i].hw.init = &s2mps11_clks_init[i];
+ s2mps11_clks[i].mask = 1 << i;
+ s2mps11_clks[i].reg = s2mps11_reg;
+
+ s2mps11_clks[i].clk = devm_clk_register(&pdev->dev,
+ &s2mps11_clks[i].hw);
+ if (IS_ERR(s2mps11_clks[i].clk)) {
+ dev_err(&pdev->dev, "Fail to register : %s\n",
+ s2mps11_clks_init[i].name);
+ ret = PTR_ERR(s2mps11_clks[i].clk);
+ goto err_reg;
+ }
+
+ s2mps11_clks[i].lookup = clkdev_hw_create(&s2mps11_clks[i].hw,
+ s2mps11_clks_init[i].name, NULL);
+ if (!s2mps11_clks[i].lookup) {
+ ret = -ENOMEM;
+ goto err_reg;
+ }
+ clk_data->hws[i] = &s2mps11_clks[i].hw;
+ }
+
+ clk_data->num = S2MPS11_CLKS_NUM;
+ of_clk_add_hw_provider(s2mps11_clks->clk_np, of_clk_hw_onecell_get,
+ clk_data);
+
+ platform_set_drvdata(pdev, s2mps11_clks);
+
+ return ret;
+
+err_reg:
+ while (--i >= 0)
+ clkdev_drop(s2mps11_clks[i].lookup);
+
+ return ret;
+}
+
+static int s2mps11_clk_remove(struct platform_device *pdev)
+{
+ struct s2mps11_clk *s2mps11_clks = platform_get_drvdata(pdev);
+ int i;
+
+ of_clk_del_provider(s2mps11_clks[0].clk_np);
+ /* Drop the reference obtained in s2mps11_clk_parse_dt */
+ of_node_put(s2mps11_clks[0].clk_np);
+
+ for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
+ /* Skip clocks not present on S2MPS14 */
+ if (!s2mps11_clks[i].lookup)
+ continue;
+ clkdev_drop(s2mps11_clks[i].lookup);
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id s2mps11_clk_id[] = {
+ { "s2mps11-clk", S2MPS11X},
+ { "s2mps13-clk", S2MPS13X},
+ { "s2mps14-clk", S2MPS14X},
+ { "s5m8767-clk", S5M8767X},
+ { },
+};
+MODULE_DEVICE_TABLE(platform, s2mps11_clk_id);
+
+#ifdef CONFIG_OF
+/*
+ * Device is instantiated through parent MFD device and device matching is done
+ * through platform_device_id.
+ *
+ * However if device's DT node contains proper clock compatible and driver is
+ * built as a module, then the *module* matching will be done trough DT aliases.
+ * This requires of_device_id table. In the same time this will not change the
+ * actual *device* matching so do not add .of_match_table.
+ */
+static const struct of_device_id s2mps11_dt_match[] __used = {
+ {
+ .compatible = "samsung,s2mps11-clk",
+ .data = (void *)S2MPS11X,
+ }, {
+ .compatible = "samsung,s2mps13-clk",
+ .data = (void *)S2MPS13X,
+ }, {
+ .compatible = "samsung,s2mps14-clk",
+ .data = (void *)S2MPS14X,
+ }, {
+ .compatible = "samsung,s5m8767-clk",
+ .data = (void *)S5M8767X,
+ }, {
+ /* Sentinel */
+ },
+};
+MODULE_DEVICE_TABLE(of, s2mps11_dt_match);
+#endif
+
+static struct platform_driver s2mps11_clk_driver = {
+ .driver = {
+ .name = "s2mps11-clk",
+ },
+ .probe = s2mps11_clk_probe,
+ .remove = s2mps11_clk_remove,
+ .id_table = s2mps11_clk_id,
+};
+
+static int __init s2mps11_clk_init(void)
+{
+ return platform_driver_register(&s2mps11_clk_driver);
+}
+subsys_initcall(s2mps11_clk_init);
+
+static void __exit s2mps11_clk_cleanup(void)
+{
+ platform_driver_unregister(&s2mps11_clk_driver);
+}
+module_exit(s2mps11_clk_cleanup);
+
+MODULE_DESCRIPTION("S2MPS11 Clock Driver");
+MODULE_AUTHOR("Yadwinder Singh Brar <yadi.brar@samsung.com>");
+MODULE_LICENSE("GPL");