litmus-rt-ext-res.git - LITMUS^RT with extended reservations for Forbidden Zones paper @ RTAS'20

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author	Linus Torvalds <torvalds@linux-foundation.org>	2015-02-22 21:21:14 -0500
committer	Linus Torvalds <torvalds@linux-foundation.org>	2015-02-22 21:21:14 -0500
commit	c517d838eb7d07bbe9507871fab3931deccff539 (patch)
tree	a9c6e1639313aa63de71cc667ec25681b33edf2b /kernel/stacktrace.c
parent	feaf222925cdfbc841a695fd30df8c6d0a694146 (diff)

Linux 4.0-rc1

.. after extensive statistical analysis of my G+ polling, I've come to the inescapable conclusion that internet polls are bad. Big surprise. But "Hurr durr I'ma sheep" trounced "I like online polls" by a 62-to-38% margin, in a poll that people weren't even supposed to participate in. Who can argue with solid numbers like that? 5,796 votes from people who can't even follow the most basic directions? In contrast, "v4.0" beat out "v3.20" by a slimmer margin of 56-to-44%, but with a total of 29,110 votes right now. Now, arguably, that vote spread is only about 3,200 votes, which is less than the almost six thousand votes that the "please ignore" poll got, so it could be considered noise. But hey, I asked, so I'll honor the votes.

Diffstat (limited to 'kernel/stacktrace.c')

0 files changed, 0 insertions, 0 deletions

/* * phy-mvebu-sata.c: SATA Phy driver for the Marvell mvebu SoCs. * * Copyright (C) 2013 Andrew Lunn <andrew@lunn.ch> * * 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. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/clk.h> #include <linux/phy/phy.h> #include <linux/io.h> #include <linux/platform_device.h> struct priv { struct clk *clk; void __iomem *base; }; #define SATA_PHY_MODE_2 0x0330 #define MODE_2_FORCE_PU_TX BIT(0) #define MODE_2_FORCE_PU_RX BIT(1) #define MODE_2_PU_PLL BIT(2) #define MODE_2_PU_IVREF BIT(3) #define SATA_IF_CTRL 0x0050 #define CTRL_PHY_SHUTDOWN BIT(9) static int phy_mvebu_sata_power_on(struct phy *phy) { struct priv *priv = phy_get_drvdata(phy); u32 reg; clk_prepare_enable(priv->clk); /* Enable PLL and IVREF */ reg = readl(priv->base + SATA_PHY_MODE_2); reg |= (MODE_2_FORCE_PU_TX | MODE_2_FORCE_PU_RX | MODE_2_PU_PLL | MODE_2_PU_IVREF); writel(reg , priv->base + SATA_PHY_MODE_2); /* Enable PHY */ reg = readl(priv->base + SATA_IF_CTRL); reg &= ~CTRL_PHY_SHUTDOWN; writel(reg, priv->base + SATA_IF_CTRL); clk_disable_unprepare(priv->clk); return 0; } static int phy_mvebu_sata_power_off(struct phy *phy) { struct priv *priv = phy_get_drvdata(phy); u32 reg; clk_prepare_enable(priv->clk); /* Disable PLL and IVREF */ reg = readl(priv->base + SATA_PHY_MODE_2); reg &= ~(MODE_2_FORCE_PU_TX | MODE_2_FORCE_PU_RX | MODE_2_PU_PLL | MODE_2_PU_IVREF); writel(reg, priv->base + SATA_PHY_MODE_2); /* Disable PHY */ reg = readl(priv->base + SATA_IF_CTRL); reg |= CTRL_PHY_SHUTDOWN; writel(reg, priv->base + SATA_IF_CTRL); clk_disable_unprepare(priv->clk); return 0; } static struct phy_ops phy_mvebu_sata_ops = { .power_on = phy_mvebu_sata_power_on, .power_off = phy_mvebu_sata_power_off, .owner = THIS_MODULE, }; static int phy_mvebu_sata_probe(struct platform_device *pdev) { struct phy_provider *phy_provider; struct resource *res; struct priv *priv; struct phy *phy; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(priv->base)) return PTR_ERR(priv->base); priv->clk = devm_clk_get(&pdev->dev, "sata"); if (IS_ERR(priv->clk)) return PTR_ERR(priv->clk); phy = devm_phy_create(&pdev->dev, &phy_mvebu_sata_ops, NULL); if (IS_ERR(phy)) return PTR_ERR(phy); phy_set_drvdata(phy, priv); phy_provider = devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate); if (IS_ERR(phy_provider)) return PTR_ERR(phy_provider); /* The boot loader may of left it on. Turn it off. */ phy_mvebu_sata_power_off(phy); return 0; } static const struct of_device_id phy_mvebu_sata_of_match[] = { { .compatible = "marvell,mvebu-sata-phy" }, { }, }; MODULE_DEVICE_TABLE(of, phy_mvebu_sata_of_match); static struct platform_driver phy_mvebu_sata_driver = { .probe = phy_mvebu_sata_probe, .driver = { .name = "phy-mvebu-sata", .owner = THIS_MODULE, .of_match_table = phy_mvebu_sata_of_match, } }; module_platform_driver(phy_mvebu_sata_driver); MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>"); MODULE_DESCRIPTION("Marvell MVEBU SATA PHY driver"); MODULE_LICENSE("GPL v2");


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