| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Srinivas Kandagatla | 1214 | 97.51% | 2 | 22.22% |
| Chunfeng Yun | 23 | 1.85% | 2 | 22.22% |
| Kishon Vijay Abraham I | 2 | 0.16% | 1 | 11.11% |
| Uwe Kleine-König | 2 | 0.16% | 1 | 11.11% |
| Thomas Gleixner | 2 | 0.16% | 1 | 11.11% |
| Axel Lin | 1 | 0.08% | 1 | 11.11% |
| Bo Liu | 1 | 0.08% | 1 | 11.11% |
| Total | 1245 | 9 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2014, The Linux Foundation. All rights reserved. */ #include <linux/io.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/time.h> #include <linux/delay.h> #include <linux/clk.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/phy/phy.h> /* PHY registers */ #define UNIPHY_PLL_REFCLK_CFG 0x000 #define UNIPHY_PLL_PWRGEN_CFG 0x014 #define UNIPHY_PLL_GLB_CFG 0x020 #define UNIPHY_PLL_SDM_CFG0 0x038 #define UNIPHY_PLL_SDM_CFG1 0x03C #define UNIPHY_PLL_SDM_CFG2 0x040 #define UNIPHY_PLL_SDM_CFG3 0x044 #define UNIPHY_PLL_SDM_CFG4 0x048 #define UNIPHY_PLL_SSC_CFG0 0x04C #define UNIPHY_PLL_SSC_CFG1 0x050 #define UNIPHY_PLL_SSC_CFG2 0x054 #define UNIPHY_PLL_SSC_CFG3 0x058 #define UNIPHY_PLL_LKDET_CFG0 0x05C #define UNIPHY_PLL_LKDET_CFG1 0x060 #define UNIPHY_PLL_LKDET_CFG2 0x064 #define UNIPHY_PLL_CAL_CFG0 0x06C #define UNIPHY_PLL_CAL_CFG8 0x08C #define UNIPHY_PLL_CAL_CFG9 0x090 #define UNIPHY_PLL_CAL_CFG10 0x094 #define UNIPHY_PLL_CAL_CFG11 0x098 #define UNIPHY_PLL_STATUS 0x0C0 #define SATA_PHY_SER_CTRL 0x100 #define SATA_PHY_TX_DRIV_CTRL0 0x104 #define SATA_PHY_TX_DRIV_CTRL1 0x108 #define SATA_PHY_TX_IMCAL0 0x11C #define SATA_PHY_TX_IMCAL2 0x124 #define SATA_PHY_RX_IMCAL0 0x128 #define SATA_PHY_EQUAL 0x13C #define SATA_PHY_OOB_TERM 0x144 #define SATA_PHY_CDR_CTRL0 0x148 #define SATA_PHY_CDR_CTRL1 0x14C #define SATA_PHY_CDR_CTRL2 0x150 #define SATA_PHY_CDR_CTRL3 0x154 #define SATA_PHY_PI_CTRL0 0x168 #define SATA_PHY_POW_DWN_CTRL0 0x180 #define SATA_PHY_POW_DWN_CTRL1 0x184 #define SATA_PHY_TX_DATA_CTRL 0x188 #define SATA_PHY_ALIGNP 0x1A4 #define SATA_PHY_TX_IMCAL_STAT 0x1E4 #define SATA_PHY_RX_IMCAL_STAT 0x1E8 #define UNIPHY_PLL_LOCK BIT(0) #define SATA_PHY_TX_CAL BIT(0) #define SATA_PHY_RX_CAL BIT(0) /* default timeout set to 1 sec */ #define TIMEOUT_MS 10000 #define DELAY_INTERVAL_US 100 struct qcom_apq8064_sata_phy { void __iomem *mmio; struct clk *cfg_clk; struct device *dev; }; /* Helper function to do poll and timeout */ static int poll_timeout(void __iomem *addr, u32 mask) { u32 val; return readl_relaxed_poll_timeout(addr, val, (val & mask), DELAY_INTERVAL_US, TIMEOUT_MS * 1000); } static int qcom_apq8064_sata_phy_init(struct phy *generic_phy) { struct qcom_apq8064_sata_phy *phy = phy_get_drvdata(generic_phy); void __iomem *base = phy->mmio; int ret = 0; /* SATA phy initialization */ writel_relaxed(0x01, base + SATA_PHY_SER_CTRL); writel_relaxed(0xB1, base + SATA_PHY_POW_DWN_CTRL0); /* Make sure the power down happens before power up */ mb(); usleep_range(10, 60); writel_relaxed(0x01, base + SATA_PHY_POW_DWN_CTRL0); writel_relaxed(0x3E, base + SATA_PHY_POW_DWN_CTRL1); writel_relaxed(0x01, base + SATA_PHY_RX_IMCAL0); writel_relaxed(0x01, base + SATA_PHY_TX_IMCAL0); writel_relaxed(0x02, base + SATA_PHY_TX_IMCAL2); /* Write UNIPHYPLL registers to configure PLL */ writel_relaxed(0x04, base + UNIPHY_PLL_REFCLK_CFG); writel_relaxed(0x00, base + UNIPHY_PLL_PWRGEN_CFG); writel_relaxed(0x0A, base + UNIPHY_PLL_CAL_CFG0); writel_relaxed(0xF3, base + UNIPHY_PLL_CAL_CFG8); writel_relaxed(0x01, base + UNIPHY_PLL_CAL_CFG9); writel_relaxed(0xED, base + UNIPHY_PLL_CAL_CFG10); writel_relaxed(0x02, base + UNIPHY_PLL_CAL_CFG11); writel_relaxed(0x36, base + UNIPHY_PLL_SDM_CFG0); writel_relaxed(0x0D, base + UNIPHY_PLL_SDM_CFG1); writel_relaxed(0xA3, base + UNIPHY_PLL_SDM_CFG2); writel_relaxed(0xF0, base + UNIPHY_PLL_SDM_CFG3); writel_relaxed(0x00, base + UNIPHY_PLL_SDM_CFG4); writel_relaxed(0x19, base + UNIPHY_PLL_SSC_CFG0); writel_relaxed(0xE1, base + UNIPHY_PLL_SSC_CFG1); writel_relaxed(0x00, base + UNIPHY_PLL_SSC_CFG2); writel_relaxed(0x11, base + UNIPHY_PLL_SSC_CFG3); writel_relaxed(0x04, base + UNIPHY_PLL_LKDET_CFG0); writel_relaxed(0xFF, base + UNIPHY_PLL_LKDET_CFG1); writel_relaxed(0x02, base + UNIPHY_PLL_GLB_CFG); /* make sure global config LDO power down happens before power up */ mb(); writel_relaxed(0x03, base + UNIPHY_PLL_GLB_CFG); writel_relaxed(0x05, base + UNIPHY_PLL_LKDET_CFG2); /* PLL Lock wait */ ret = poll_timeout(base + UNIPHY_PLL_STATUS, UNIPHY_PLL_LOCK); if (ret) { dev_err(phy->dev, "poll timeout UNIPHY_PLL_STATUS\n"); return ret; } /* TX Calibration */ ret = poll_timeout(base + SATA_PHY_TX_IMCAL_STAT, SATA_PHY_TX_CAL); if (ret) { dev_err(phy->dev, "poll timeout SATA_PHY_TX_IMCAL_STAT\n"); return ret; } /* RX Calibration */ ret = poll_timeout(base + SATA_PHY_RX_IMCAL_STAT, SATA_PHY_RX_CAL); if (ret) { dev_err(phy->dev, "poll timeout SATA_PHY_RX_IMCAL_STAT\n"); return ret; } /* SATA phy calibrated successfully, power up to functional mode */ writel_relaxed(0x3E, base + SATA_PHY_POW_DWN_CTRL1); writel_relaxed(0x01, base + SATA_PHY_RX_IMCAL0); writel_relaxed(0x01, base + SATA_PHY_TX_IMCAL0); writel_relaxed(0x00, base + SATA_PHY_POW_DWN_CTRL1); writel_relaxed(0x59, base + SATA_PHY_CDR_CTRL0); writel_relaxed(0x04, base + SATA_PHY_CDR_CTRL1); writel_relaxed(0x00, base + SATA_PHY_CDR_CTRL2); writel_relaxed(0x00, base + SATA_PHY_PI_CTRL0); writel_relaxed(0x00, base + SATA_PHY_CDR_CTRL3); writel_relaxed(0x01, base + SATA_PHY_POW_DWN_CTRL0); writel_relaxed(0x11, base + SATA_PHY_TX_DATA_CTRL); writel_relaxed(0x43, base + SATA_PHY_ALIGNP); writel_relaxed(0x04, base + SATA_PHY_OOB_TERM); writel_relaxed(0x01, base + SATA_PHY_EQUAL); writel_relaxed(0x09, base + SATA_PHY_TX_DRIV_CTRL0); writel_relaxed(0x09, base + SATA_PHY_TX_DRIV_CTRL1); return 0; } static int qcom_apq8064_sata_phy_exit(struct phy *generic_phy) { struct qcom_apq8064_sata_phy *phy = phy_get_drvdata(generic_phy); void __iomem *base = phy->mmio; /* Power down PHY */ writel_relaxed(0xF8, base + SATA_PHY_POW_DWN_CTRL0); writel_relaxed(0xFE, base + SATA_PHY_POW_DWN_CTRL1); /* Power down PLL block */ writel_relaxed(0x00, base + UNIPHY_PLL_GLB_CFG); return 0; } static const struct phy_ops qcom_apq8064_sata_phy_ops = { .init = qcom_apq8064_sata_phy_init, .exit = qcom_apq8064_sata_phy_exit, .owner = THIS_MODULE, }; static int qcom_apq8064_sata_phy_probe(struct platform_device *pdev) { struct qcom_apq8064_sata_phy *phy; struct device *dev = &pdev->dev; struct phy_provider *phy_provider; struct phy *generic_phy; int ret; phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); if (!phy) return -ENOMEM; phy->mmio = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(phy->mmio)) return PTR_ERR(phy->mmio); generic_phy = devm_phy_create(dev, NULL, &qcom_apq8064_sata_phy_ops); if (IS_ERR(generic_phy)) { dev_err(dev, "%s: failed to create phy\n", __func__); return PTR_ERR(generic_phy); } phy->dev = dev; phy_set_drvdata(generic_phy, phy); platform_set_drvdata(pdev, phy); phy->cfg_clk = devm_clk_get(dev, "cfg"); if (IS_ERR(phy->cfg_clk)) { dev_err(dev, "Failed to get sata cfg clock\n"); return PTR_ERR(phy->cfg_clk); } ret = clk_prepare_enable(phy->cfg_clk); if (ret) return ret; phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (IS_ERR(phy_provider)) { clk_disable_unprepare(phy->cfg_clk); dev_err(dev, "%s: failed to register phy\n", __func__); return PTR_ERR(phy_provider); } return 0; } static void qcom_apq8064_sata_phy_remove(struct platform_device *pdev) { struct qcom_apq8064_sata_phy *phy = platform_get_drvdata(pdev); clk_disable_unprepare(phy->cfg_clk); } static const struct of_device_id qcom_apq8064_sata_phy_of_match[] = { { .compatible = "qcom,apq8064-sata-phy" }, { }, }; MODULE_DEVICE_TABLE(of, qcom_apq8064_sata_phy_of_match); static struct platform_driver qcom_apq8064_sata_phy_driver = { .probe = qcom_apq8064_sata_phy_probe, .remove_new = qcom_apq8064_sata_phy_remove, .driver = { .name = "qcom-apq8064-sata-phy", .of_match_table = qcom_apq8064_sata_phy_of_match, } }; module_platform_driver(qcom_apq8064_sata_phy_driver); MODULE_DESCRIPTION("QCOM apq8064 SATA PHY driver"); MODULE_LICENSE("GPL v2");
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