// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2016-2018 Broadcom */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/module.h> #include <linux/mfd/syscon.h> #include <linux/of.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/regmap.h> /* we have up to 8 PAXB based RC. The 9th one is always PAXC */ #define SR_NR_PCIE_PHYS … #define SR_PAXC_PHY_IDX … #define PCIE_PIPEMUX_CFG_OFFSET … #define PCIE_PIPEMUX_SELECT_STRAP … #define CDRU_STRAP_DATA_LSW_OFFSET … #define PCIE_PIPEMUX_SHIFT … #define PCIE_PIPEMUX_MASK … #define MHB_MEM_PW_PAXC_OFFSET … #define MHB_PWR_ARR_POWERON … #define MHB_PWR_ARR_POWEROK … #define MHB_PWR_POWERON … #define MHB_PWR_POWEROK … #define MHB_PWR_STATUS_MASK … struct sr_pcie_phy_core; /** * struct sr_pcie_phy - Stingray PCIe PHY * * @core: pointer to the Stingray PCIe PHY core control * @index: PHY index * @phy: pointer to the kernel PHY device */ struct sr_pcie_phy { … }; /** * struct sr_pcie_phy_core - Stingray PCIe PHY core control * * @dev: pointer to device * @base: base register of PCIe SS * @cdru: regmap to the CDRU device * @mhb: regmap to the MHB device * @pipemux: pipemuex strap * @phys: array of PCIe PHYs */ struct sr_pcie_phy_core { … }; /* * PCIe PIPEMUX lookup table * * Each array index represents a PIPEMUX strap setting * The array element represents a bitmap where a set bit means the PCIe * core and associated serdes has been enabled as RC and is available for use */ static const u8 pipemux_table[] = …; /* * Return true if the strap setting is valid */ static bool pipemux_strap_is_valid(u32 pipemux) { … } /* * Read the PCIe PIPEMUX from strap */ static u32 pipemux_strap_read(struct sr_pcie_phy_core *core) { … } /* * Given a PIPEMUX strap and PCIe core index, this function returns true if the * PCIe core needs to be enabled */ static bool pcie_core_is_for_rc(struct sr_pcie_phy *phy) { … } static int sr_pcie_phy_init(struct phy *p) { … } static int sr_paxc_phy_init(struct phy *p) { … } static const struct phy_ops sr_pcie_phy_ops = …; static const struct phy_ops sr_paxc_phy_ops = …; static struct phy *sr_pcie_phy_xlate(struct device *dev, const struct of_phandle_args *args) { … } static int sr_pcie_phy_probe(struct platform_device *pdev) { … } static const struct of_device_id sr_pcie_phy_match_table[] = …; MODULE_DEVICE_TABLE(of, sr_pcie_phy_match_table); static struct platform_driver sr_pcie_phy_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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