yardstick -

Age	Commit message (Expand)	Author	Files	Lines
2017-03-24	Update cirros image to latest version	Michael Polenchuk	1	-2/+2
2017-02-17	Update missing license headers	Deepak S	1	-0/+8
2016-12-19	change m1.* flavor to "yardstick-flavor"	JingLu5	1	-2/+2
2015-09-06	Support to config external network by shell env	QiLiang	1	-2/+0
2015-07-08	Apply theme to server names in samples	raindirve	1	-4/+4
2015-06-09	Add support for multiple contexts(stacks)	Hans Feldt	1	-0/+56

/* * 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> #define s2mps11_name(a) (a->hw.init->name) static struct clk **clk_table; static struct clk_onecell_data clk_data; 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, }; static struct clk_init_data s2mps11_clks_init[S2MPS11_CLKS_NUM] = { [S2MPS11_CLK_AP] = { .name = "s2mps11_ap", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, [S2MPS11_CLK_CP] = { .name = "s2mps11_cp", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, [S2MPS11_CLK_BT] = { .name = "s2mps11_bt", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, }; static struct clk_init_data s2mps13_clks_init[S2MPS11_CLKS_NUM] = { [S2MPS11_CLK_AP] = { .name = "s2mps13_ap", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, [S2MPS11_CLK_CP] = { .name = "s2mps13_cp", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, [S2MPS11_CLK_BT] = { .name = "s2mps13_bt", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, }; static struct clk_init_data s2mps14_clks_init[S2MPS11_CLKS_NUM] = { [S2MPS11_CLK_AP] = { .name = "s2mps14_ap", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, [S2MPS11_CLK_BT] = { .name = "s2mps14_bt", .ops = &s2mps11_clk_ops, .flags = CLK_IS_ROOT, }, }; 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++) { if (!clks_init[i].name) continue; /* Skip clocks not present in some devices */ 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, *s2mps11_clk; unsigned int s2mps11_reg; struct clk_init_data *clks_init; int i, ret = 0; s2mps11_clks = devm_kcalloc(&pdev->dev, S2MPS11_CLKS_NUM, sizeof(*s2mps11_clk), GFP_KERNEL); if (!s2mps11_clks) return -ENOMEM; s2mps11_clk = s2mps11_clks; clk_table = devm_kcalloc(&pdev->dev, S2MPS11_CLKS_NUM, sizeof(struct clk *), GFP_KERNEL); if (!clk_table) return -ENOMEM; switch(platform_get_device_id(pdev)->driver_data) { case S2MPS11X: s2mps11_reg = S2MPS11_REG_RTC_CTRL; clks_init = s2mps11_clks_init; break; case S2MPS13X: s2mps11_reg = S2MPS13_REG_RTCCTRL; clks_init = s2mps13_clks_init; break; case S2MPS14X: s2mps11_reg = S2MPS14_REG_RTCCTRL; clks_init = s2mps14_clks_init; break; case S5M8767X: s2mps11_reg = S5M8767_REG_CTRL1; clks_init = s2mps11_clks_init; 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, clks_init); if (IS_ERR(s2mps11_clks->clk_np)) return PTR_ERR(s2mps11_clks->clk_np); for (i = 0; i < S2MPS11_CLKS_NUM; i++, s2mps11_clk++) { if (!clks_init[i].name) continue; /* Skip clocks not present in some devices */ s2mps11_clk->iodev = iodev; s2mps11_clk->hw.init = &clks_init[i]; s2mps11_clk->mask = 1 << i; s2mps11_clk->reg = s2mps11_reg; s2mps11_clk->clk = devm_clk_register(&pdev->dev, &s2mps11_clk->hw); if (IS_ERR(s2mps11_clk->clk)) { dev_err(&pdev->dev, "Fail to register : %s\n", s2mps11_name(s2mps11_clk)); ret = PTR_ERR(s2mps11_clk->clk); goto err_reg; } s2mps11_clk->lookup = clkdev_create(s2mps11_clk->clk, s2mps11_name(s2mps11_clk), NULL); if (!s2mps11_clk->lookup) { ret = -ENOMEM; goto err_reg; } } for (i = 0; i < S2MPS11_CLKS_NUM; i++) { /* Skip clocks not present on S2MPS14 */ if (!clks_init[i].name) continue; clk_table[i] = s2mps11_clks[i].clk; } clk_data.clks = clk_table; clk_data.clk_num = S2MPS11_CLKS_NUM; of_clk_add_provider(s2mps11_clks->clk_np, of_clk_src_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); 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");