diff options
Diffstat (limited to 'patches.tizen/1218-phy-Add-exynos-phy-driver.patch')
| -rw-r--r-- | patches.tizen/1218-phy-Add-exynos-phy-driver.patch | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/patches.tizen/1218-phy-Add-exynos-phy-driver.patch b/patches.tizen/1218-phy-Add-exynos-phy-driver.patch new file mode 100644 index 00000000000..ffae49c995a --- /dev/null +++ b/patches.tizen/1218-phy-Add-exynos-phy-driver.patch @@ -0,0 +1,202 @@ +From 0801037a6e7c6b36eb56ff8be8515b2c639c873b Mon Sep 17 00:00:00 2001 +From: Tomasz Stanislawski <t.stanislaws@samsung.com> +Date: Mon, 30 Sep 2013 17:46:53 +0200 +Subject: [PATCH 1218/1302] phy: Add exynos-phy driver + +Add exynos-phy driver to support a single register +PHY interfaces present on Exynos4 SoC. + +Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> +Change-Id: I1a2eeab876507e1e427fcb26782d060a1614852a +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + drivers/phy/Kconfig | 5 ++ + drivers/phy/Makefile | 1 + + drivers/phy/exynos-phy.c | 152 +++++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 158 insertions(+) + create mode 100644 drivers/phy/exynos-phy.c + +diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig +index bf63eb8..62bd2cb 100644 +--- a/drivers/phy/Kconfig ++++ b/drivers/phy/Kconfig +@@ -42,4 +42,9 @@ config PHY_EXYNOS4212_USB + help + Enable USB PHY support for Exynos 4212 + ++config EXYNOS_PHY ++ tristate "Exynos PHY driver" ++ help ++ Support for PHY controllers on SoCs from Exynos family. ++ + endmenu +diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile +index d75f932..e56dd72 100644 +--- a/drivers/phy/Makefile ++++ b/drivers/phy/Makefile +@@ -7,3 +7,4 @@ obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o + obj-$(CONFIG_PHY_EXYNOS_USB) += phy-exynos-usb.o + obj-$(CONFIG_PHY_EXYNOS4210_USB) += phy-exynos4210-usb.o + obj-$(CONFIG_PHY_EXYNOS4212_USB) += phy-exynos4212-usb.o ++obj-$(CONFIG_EXYNOS_PHY) += exynos-phy.o +diff --git a/drivers/phy/exynos-phy.c b/drivers/phy/exynos-phy.c +new file mode 100644 +index 0000000..46d5603 +--- /dev/null ++++ b/drivers/phy/exynos-phy.c +@@ -0,0 +1,152 @@ ++/* ++ * Exynos PHY driver ++ * ++ * Copyright (C) 2013 Samsung Electronics Co., Ltd. ++ * Author: Tomasz Stanislawski <t.stanislaws@samsung.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/of_address.h> ++#include <linux/of_device.h> ++#include <linux/phy/phy.h> ++ ++#define EXYNOS_PHY_ENABLE (1 << 0) ++ ++static int exynos_phy_power_on(struct phy *phy) ++{ ++ void __iomem *reg = phy_get_drvdata(phy); ++ u32 val; ++ ++ val = readl(reg); ++ val |= EXYNOS_PHY_ENABLE; ++ writel(val, reg); ++ ++ return 0; ++} ++ ++static int exynos_phy_power_off(struct phy *phy) ++{ ++ void __iomem *reg = phy_get_drvdata(phy); ++ u32 val; ++ ++ val = readl(reg); ++ val &= ~EXYNOS_PHY_ENABLE; ++ writel(val, reg); ++ ++ return 0; ++} ++ ++static struct phy_ops exynos_phy_ops = { ++ .power_on = exynos_phy_power_on, ++ .power_off = exynos_phy_power_off, ++ .owner = THIS_MODULE, ++}; ++ ++static const u32 exynos4210_offsets[] = { ++ 0x0700, /* HDMI_PHY */ ++ 0x070C, /* DAC_PHY */ ++ 0x0718, /* ADC_PHY */ ++ 0x071C, /* PCIE_PHY */ ++ 0x0720, /* SATA_PHY */ ++ ~0, /* end mark */ ++}; ++ ++static const u32 exynos4412_offsets[] = { ++ 0x0700, /* HDMI_PHY */ ++ 0x0718, /* ADC_PHY */ ++ ~0, /* end mark */ ++}; ++ ++static const struct of_device_id exynos_phy_of_match[] = { ++ { .compatible = "exynos4210-phy", .data = exynos4210_offsets}, ++ { .compatible = "exynos4412-phy", .data = exynos4412_offsets}, ++ { }, ++}; ++MODULE_DEVICE_TABLE(of, exynos_phy_of_match); ++ ++static struct phy *exynos_phy_xlate(struct device *dev, ++ struct of_phandle_args *args) ++{ ++ struct phy **phys = dev_get_drvdata(dev); ++ int index = args->args[0]; ++ int i; ++ ++ /* verify if index is valid */ ++ for (i = 0; i <= index; ++i) ++ if (!phys[i]) ++ return ERR_PTR(-ENODEV); ++ ++ return phys[index]; ++} ++ ++static int exynos_phy_probe(struct platform_device *pdev) ++{ ++ const struct of_device_id *of_id = of_match_device( ++ of_match_ptr(exynos_phy_of_match), &pdev->dev); ++ const u32 *offsets = of_id->data; ++ int count; ++ struct device *dev = &pdev->dev; ++ struct phy **phys; ++ struct resource *res; ++ void __iomem *regs; ++ int i; ++ struct phy_provider *phy_provider; ++ ++ /* count number of phys to create */ ++ for (count = 0; offsets[count] != ~0; ++count) ++ ; ++ ++ phys = devm_kzalloc(dev, (count + 1) * sizeof(phys[0]), GFP_KERNEL); ++ if (!phys) ++ return -ENOMEM; ++ ++ dev_set_drvdata(dev, phys); ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ ++ regs = devm_ioremap(dev, res->start, res->end - res->start); ++ if (!regs) { ++ dev_err(dev, "failed to ioremap registers\n"); ++ return -EFAULT; ++ } ++ ++ /* NOTE: last entry in phys[] is NULL */ ++ for (i = 0; i < count; ++i) { ++ phys[i] = devm_phy_create(dev, &exynos_phy_ops, NULL); ++ if (IS_ERR(phys[i])) { ++ dev_err(dev, "failed to create PHY %d\n", i); ++ return PTR_ERR(phys[i]); ++ } ++ phy_set_drvdata(phys[i], regs + offsets[i]); ++ } ++ ++ phy_provider = devm_of_phy_provider_register(dev, exynos_phy_xlate); ++ if (IS_ERR(phy_provider)) { ++ dev_err(dev, "failed to register PHY provider\n"); ++ return PTR_ERR(phy_provider); ++ } ++ ++ dev_info(dev, "added %d phys\n", count); ++ ++ return 0; ++} ++ ++static struct platform_driver exynos_phy_driver = { ++ .probe = exynos_phy_probe, ++ .driver = { ++ .of_match_table = exynos_phy_of_match, ++ .name = "exynos-phy", ++ .owner = THIS_MODULE, ++ } ++}; ++module_platform_driver(exynos_phy_driver); ++ ++MODULE_DESCRIPTION("Exynos PHY driver"); ++MODULE_AUTHOR("Tomasz Stanislawski <t.stanislaws@samsung.com>"); ++MODULE_LICENSE("GPL v2"); +-- +1.8.3.2 + |