| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Pratyush Anand | 900 | 98.47% | 3 | 42.86% |
| Axel Lin | 11 | 1.20% | 2 | 28.57% |
| Linus Torvalds | 2 | 0.22% | 1 | 14.29% |
| Peter Griffin | 1 | 0.11% | 1 | 14.29% |
| Total | 914 | 7 |
/* * ST SPEAr1310-miphy driver * * Copyright (C) 2014 ST Microelectronics * Pratyush Anand <pratyush.anand@gmail.com> * Mohit Kumar <mohit.kumar.dhaka@gmail.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/bitops.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/kernel.h> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/phy/phy.h> #include <linux/regmap.h> /* SPEAr1310 Registers */ #define SPEAR1310_PCIE_SATA_CFG 0x3A4 #define SPEAR1310_PCIE_SATA2_SEL_PCIE (0 << 31) #define SPEAR1310_PCIE_SATA1_SEL_PCIE (0 << 30) #define SPEAR1310_PCIE_SATA0_SEL_PCIE (0 << 29) #define SPEAR1310_PCIE_SATA2_SEL_SATA BIT(31) #define SPEAR1310_PCIE_SATA1_SEL_SATA BIT(30) #define SPEAR1310_PCIE_SATA0_SEL_SATA BIT(29) #define SPEAR1310_SATA2_CFG_TX_CLK_EN BIT(27) #define SPEAR1310_SATA2_CFG_RX_CLK_EN BIT(26) #define SPEAR1310_SATA2_CFG_POWERUP_RESET BIT(25) #define SPEAR1310_SATA2_CFG_PM_CLK_EN BIT(24) #define SPEAR1310_SATA1_CFG_TX_CLK_EN BIT(23) #define SPEAR1310_SATA1_CFG_RX_CLK_EN BIT(22) #define SPEAR1310_SATA1_CFG_POWERUP_RESET BIT(21) #define SPEAR1310_SATA1_CFG_PM_CLK_EN BIT(20) #define SPEAR1310_SATA0_CFG_TX_CLK_EN BIT(19) #define SPEAR1310_SATA0_CFG_RX_CLK_EN BIT(18) #define SPEAR1310_SATA0_CFG_POWERUP_RESET BIT(17) #define SPEAR1310_SATA0_CFG_PM_CLK_EN BIT(16) #define SPEAR1310_PCIE2_CFG_DEVICE_PRESENT BIT(11) #define SPEAR1310_PCIE2_CFG_POWERUP_RESET BIT(10) #define SPEAR1310_PCIE2_CFG_CORE_CLK_EN BIT(9) #define SPEAR1310_PCIE2_CFG_AUX_CLK_EN BIT(8) #define SPEAR1310_PCIE1_CFG_DEVICE_PRESENT BIT(7) #define SPEAR1310_PCIE1_CFG_POWERUP_RESET BIT(6) #define SPEAR1310_PCIE1_CFG_CORE_CLK_EN BIT(5) #define SPEAR1310_PCIE1_CFG_AUX_CLK_EN BIT(4) #define SPEAR1310_PCIE0_CFG_DEVICE_PRESENT BIT(3) #define SPEAR1310_PCIE0_CFG_POWERUP_RESET BIT(2) #define SPEAR1310_PCIE0_CFG_CORE_CLK_EN BIT(1) #define SPEAR1310_PCIE0_CFG_AUX_CLK_EN BIT(0) #define SPEAR1310_PCIE_CFG_MASK(x) ((0xF << (x * 4)) | BIT((x + 29))) #define SPEAR1310_SATA_CFG_MASK(x) ((0xF << (x * 4 + 16)) | \ BIT((x + 29))) #define SPEAR1310_PCIE_CFG_VAL(x) \ (SPEAR1310_PCIE_SATA##x##_SEL_PCIE | \ SPEAR1310_PCIE##x##_CFG_AUX_CLK_EN | \ SPEAR1310_PCIE##x##_CFG_CORE_CLK_EN | \ SPEAR1310_PCIE##x##_CFG_POWERUP_RESET | \ SPEAR1310_PCIE##x##_CFG_DEVICE_PRESENT) #define SPEAR1310_SATA_CFG_VAL(x) \ (SPEAR1310_PCIE_SATA##x##_SEL_SATA | \ SPEAR1310_SATA##x##_CFG_PM_CLK_EN | \ SPEAR1310_SATA##x##_CFG_POWERUP_RESET | \ SPEAR1310_SATA##x##_CFG_RX_CLK_EN | \ SPEAR1310_SATA##x##_CFG_TX_CLK_EN) #define SPEAR1310_PCIE_MIPHY_CFG_1 0x3A8 #define SPEAR1310_MIPHY_DUAL_OSC_BYPASS_EXT BIT(31) #define SPEAR1310_MIPHY_DUAL_CLK_REF_DIV2 BIT(28) #define SPEAR1310_MIPHY_DUAL_PLL_RATIO_TOP(x) (x << 16) #define SPEAR1310_MIPHY_SINGLE_OSC_BYPASS_EXT BIT(15) #define SPEAR1310_MIPHY_SINGLE_CLK_REF_DIV2 BIT(12) #define SPEAR1310_MIPHY_SINGLE_PLL_RATIO_TOP(x) (x << 0) #define SPEAR1310_PCIE_SATA_MIPHY_CFG_SATA_MASK (0xFFFF) #define SPEAR1310_PCIE_SATA_MIPHY_CFG_PCIE_MASK (0xFFFF << 16) #define SPEAR1310_PCIE_SATA_MIPHY_CFG_SATA \ (SPEAR1310_MIPHY_DUAL_OSC_BYPASS_EXT | \ SPEAR1310_MIPHY_DUAL_CLK_REF_DIV2 | \ SPEAR1310_MIPHY_DUAL_PLL_RATIO_TOP(60) | \ SPEAR1310_MIPHY_SINGLE_OSC_BYPASS_EXT | \ SPEAR1310_MIPHY_SINGLE_CLK_REF_DIV2 | \ SPEAR1310_MIPHY_SINGLE_PLL_RATIO_TOP(60)) #define SPEAR1310_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK \ (SPEAR1310_MIPHY_SINGLE_PLL_RATIO_TOP(120)) #define SPEAR1310_PCIE_SATA_MIPHY_CFG_PCIE \ (SPEAR1310_MIPHY_DUAL_OSC_BYPASS_EXT | \ SPEAR1310_MIPHY_DUAL_PLL_RATIO_TOP(25) | \ SPEAR1310_MIPHY_SINGLE_OSC_BYPASS_EXT | \ SPEAR1310_MIPHY_SINGLE_PLL_RATIO_TOP(25)) #define SPEAR1310_PCIE_MIPHY_CFG_2 0x3AC enum spear1310_miphy_mode { SATA, PCIE, }; struct spear1310_miphy_priv { /* instance id of this phy */ u32 id; /* phy mode: 0 for SATA 1 for PCIe */ enum spear1310_miphy_mode mode; /* regmap for any soc specific misc registers */ struct regmap *misc; /* phy struct pointer */ struct phy *phy; }; static int spear1310_miphy_pcie_init(struct spear1310_miphy_priv *priv) { u32 val; regmap_update_bits(priv->misc, SPEAR1310_PCIE_MIPHY_CFG_1, SPEAR1310_PCIE_SATA_MIPHY_CFG_PCIE_MASK, SPEAR1310_PCIE_SATA_MIPHY_CFG_PCIE); switch (priv->id) { case 0: val = SPEAR1310_PCIE_CFG_VAL(0); break; case 1: val = SPEAR1310_PCIE_CFG_VAL(1); break; case 2: val = SPEAR1310_PCIE_CFG_VAL(2); break; default: return -EINVAL; } regmap_update_bits(priv->misc, SPEAR1310_PCIE_SATA_CFG, SPEAR1310_PCIE_CFG_MASK(priv->id), val); return 0; } static int spear1310_miphy_pcie_exit(struct spear1310_miphy_priv *priv) { regmap_update_bits(priv->misc, SPEAR1310_PCIE_SATA_CFG, SPEAR1310_PCIE_CFG_MASK(priv->id), 0); regmap_update_bits(priv->misc, SPEAR1310_PCIE_MIPHY_CFG_1, SPEAR1310_PCIE_SATA_MIPHY_CFG_PCIE_MASK, 0); return 0; } static int spear1310_miphy_init(struct phy *phy) { struct spear1310_miphy_priv *priv = phy_get_drvdata(phy); int ret = 0; if (priv->mode == PCIE) ret = spear1310_miphy_pcie_init(priv); return ret; } static int spear1310_miphy_exit(struct phy *phy) { struct spear1310_miphy_priv *priv = phy_get_drvdata(phy); int ret = 0; if (priv->mode == PCIE) ret = spear1310_miphy_pcie_exit(priv); return ret; } static const struct of_device_id spear1310_miphy_of_match[] = { { .compatible = "st,spear1310-miphy" }, { }, }; MODULE_DEVICE_TABLE(of, spear1310_miphy_of_match); static const struct phy_ops spear1310_miphy_ops = { .init = spear1310_miphy_init, .exit = spear1310_miphy_exit, .owner = THIS_MODULE, }; static struct phy *spear1310_miphy_xlate(struct device *dev, struct of_phandle_args *args) { struct spear1310_miphy_priv *priv = dev_get_drvdata(dev); if (args->args_count < 1) { dev_err(dev, "DT did not pass correct no of args\n"); return ERR_PTR(-ENODEV); } priv->mode = args->args[0]; if (priv->mode != SATA && priv->mode != PCIE) { dev_err(dev, "DT did not pass correct phy mode\n"); return ERR_PTR(-ENODEV); } return priv->phy; } static int spear1310_miphy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct spear1310_miphy_priv *priv; struct phy_provider *phy_provider; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->misc = syscon_regmap_lookup_by_phandle(dev->of_node, "misc"); if (IS_ERR(priv->misc)) { dev_err(dev, "failed to find misc regmap\n"); return PTR_ERR(priv->misc); } if (of_property_read_u32(dev->of_node, "phy-id", &priv->id)) { dev_err(dev, "failed to find phy id\n"); return -EINVAL; } priv->phy = devm_phy_create(dev, NULL, &spear1310_miphy_ops); if (IS_ERR(priv->phy)) { dev_err(dev, "failed to create SATA PCIe PHY\n"); return PTR_ERR(priv->phy); } dev_set_drvdata(dev, priv); phy_set_drvdata(priv->phy, priv); phy_provider = devm_of_phy_provider_register(dev, spear1310_miphy_xlate); if (IS_ERR(phy_provider)) { dev_err(dev, "failed to register phy provider\n"); return PTR_ERR(phy_provider); } return 0; } static struct platform_driver spear1310_miphy_driver = { .probe = spear1310_miphy_probe, .driver = { .name = "spear1310-miphy", .of_match_table = of_match_ptr(spear1310_miphy_of_match), }, }; module_platform_driver(spear1310_miphy_driver); MODULE_DESCRIPTION("ST SPEAR1310-MIPHY driver"); MODULE_AUTHOR("Pratyush Anand <pratyush.anand@gmail.com>"); MODULE_LICENSE("GPL v2");
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