From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756547AbbJAIUd (ORCPT ); Thu, 1 Oct 2015 04:20:33 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:59882 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752123AbbJAIU0 (ORCPT ); Thu, 1 Oct 2015 04:20:26 -0400 X-AuditID: cbfee690-f794e6d0000014de-3d-560cecc862ba From: Alim Akhtar To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: JBottomley@odin.com, vinholikatti@gmail.com, amit.daniel@samsung.com, essuuj@gmail.com, devicetree@vger.kernel.org, Kishon Vijay Abraham I Subject: [PATCH v3 02/13] phy: exynos-ufs: add UFS PHY driver for EXYNOS SoC Date: Thu, 01 Oct 2015 13:39:19 +0530 Message-id: <1443686970-28104-3-git-send-email-alim.akhtar@samsung.com> X-Mailer: git-send-email 1.7.10.4 In-reply-to: <1443686970-28104-1-git-send-email-alim.akhtar@samsung.com> References: <1443686970-28104-1-git-send-email-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrHLMWRmVeSWpSXmKPExsWyRsSkWvfEG54wg65/3BYNV0Ms5h85x2qx /MISJov/62+zWFx42sNmcXnXHDaL7us72Cx2LKxy4PDYOesuu8fhHz+YPfq2rGL0OH5jO5PH 501yAaxRXDYpqTmZZalF+nYJXBlTVyoWvJjEWDFp82XmBsaeqi5GTg4JAROJZ3vnskPYYhIX 7q1n62Lk4hASWMEocfvSbRaYoqsTLjKD2EICsxgldv9Qgyj6ySjxfkIzG0iCTUBb4u70LUwg toiAjcT5mw+YQIqYBRYxSnw+9QasSFjAR6J/y3kwm0VAVeLJjotgDbwC7hK3bvSzQmxTlOh+ NgGohoODU8BD4tuiUIjF7hIf7i5nBJkpIbCIXWLm0nusEHMEJL5NPsQCUi8hICux6QAzxBhJ iYMrbrBMYBRewMiwilE0tSC5oDgpvchErzgxt7g0L10vOT93EyMw2E//ezZhB+O9A9aHGAU4 GJV4eCXSecKEWBPLiitzDzGaAm2YyCwlmpwPjKm8knhDYzMjC1MTU2Mjc0szJXHe11I/g4UE 0hNLUrNTUwtSi+KLSnNSiw8xMnFwSjUwJu0rNP++OYfHpEHs5vVXv6+9dluWV7SFvS56uq1Y chiD4AT1Q2vXTrlcvOvScZX4r86x584s1ezOPnxg7mlbpRM3f8TMat505vhjA8WJX+73HhM3 y9LUZ3jlf37+4auvnu2c1Cqsu/RkdE1JkV/n0bn+H4wUdE8azHqS/pBtZQDvQd0q41rbd0os xRmJhlrMRcWJAPmQf/9xAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrNIsWRmVeSWpSXmKPExsVy+t9jQd0Tb3jCDHp/M1o0XA2xmH/kHKvF 8gtLmCz+r7/NYnHhaQ+bxeVdc9gsuq/vYLPYsbDKgcNj56y77B6Hf/xg9ujbsorR4/iN7Uwe nzfJBbBGNTDaZKQmpqQWKaTmJeenZOal2yp5B8c7x5uaGRjqGlpamCsp5CXmptoqufgE6Lpl 5gCdoqRQlphTChQKSCwuVtK3wzQhNMRN1wKmMULXNyQIrsfIAA0krGHMmLpSseDFJMaKSZsv Mzcw9lR1MXJySAiYSFydcJEZwhaTuHBvPRuILSQwi1Fi9w+1LkYuIPsno8T7Cc1gCTYBbYm7 07cwgdgiAjYS528+YAIpYhZYxCjx+dQbsCJhAR+J/i3nwWwWAVWJJzsugjXwCrhL3LrRzwqx TVGi+9kEoBoODk4BD4lvi0IhFrtLfLi7nHECI+8CRoZVjBKpBckFxUnpuUZ5qeV6xYm5xaV5 6XrJ+bmbGMER9Ux6B+PhXe6HGAU4GJV4eA+k8IQJsSaWFVfmHmKU4GBWEuE9eA8oxJuSWFmV WpQfX1Sak1p8iNEU6K6JzFKiyfnAaM8riTc0NjE3NTa1NLEwMbNUEue9cYghTEggPbEkNTs1 tSC1CKaPiYNTqoGxZZ356r8GR9l22DvkcZbcL56kc4TT8dLv26qnYllci65M+x54pX79mtlL 8q3n/2jZyCH1r+GKb6baUbVZV+N+XuT+v/SEToRR1AztJ96RmxWDfixtDrnAxHjFiOnxrf2C 4p7pPBb7RW8t6EupZ32x4VuXy4uJeY32jy5MMU88fnfHj3m/r/+yUWIpzkg01GIuKk4EAACL kk6+AgAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Seungwon Jeon This patch introduces Exynos UFS PHY driver. This driver supports to deal with phy calibration and power control according to UFS host driver's behavior. Signed-off-by: Seungwon Jeon Signed-off-by: Alim Akhtar Cc: Kishon Vijay Abraham I --- drivers/phy/Kconfig | 7 + drivers/phy/Makefile | 1 + drivers/phy/phy-exynos-ufs.c | 257 ++++++++++++++++++++++++++++++++++++ drivers/phy/phy-exynos-ufs.h | 88 ++++++++++++ drivers/phy/phy-exynos7-ufs.h | 89 +++++++++++++ include/linux/phy/phy-exynos-ufs.h | 101 ++++++++++++++ 6 files changed, 543 insertions(+) create mode 100644 drivers/phy/phy-exynos-ufs.c create mode 100644 drivers/phy/phy-exynos-ufs.h create mode 100644 drivers/phy/phy-exynos7-ufs.h create mode 100644 include/linux/phy/phy-exynos-ufs.h diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 6b8dd16..199a865 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -358,4 +358,11 @@ config PHY_BRCMSTB_SATA Enable this to support the SATA3 PHY on 28nm Broadcom STB SoCs. Likely useful only with CONFIG_SATA_BRCMSTB enabled. +config PHY_EXYNOS_UFS + tristate "EXYNOS SoC series UFS PHY driver" + depends on OF && ARCH_EXYNOS || COMPILE_TEST + select GENERIC_PHY + help + Support for UFS PHY on Samsung EXYNOS chipsets. + endmenu diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index f344e1b..7a36818 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -45,3 +45,4 @@ obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-14nm.o obj-$(CONFIG_PHY_TUSB1210) += phy-tusb1210.o obj-$(CONFIG_PHY_BRCMSTB_SATA) += phy-brcmstb-sata.o obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o +obj-$(CONFIG_PHY_EXYNOS_UFS) += phy-exynos-ufs.o diff --git a/drivers/phy/phy-exynos-ufs.c b/drivers/phy/phy-exynos-ufs.c new file mode 100644 index 0000000..343fcaf --- /dev/null +++ b/drivers/phy/phy-exynos-ufs.c @@ -0,0 +1,257 @@ +/* + * UFS PHY driver for Samsung EXYNOS SoC + * + * Copyright (C) 2015 Samsung Electronics Co., Ltd. + * Author: Seungwon Jeon + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "phy-exynos-ufs.h" + +#define for_each_phy_lane(phy, i) \ + for (i = 0; i < (phy)->lane_cnt; i++) +#define for_each_phy_cfg(cfg) \ + for (; (cfg)->id; (cfg)++) + +#define PHY_DEF_LANE_CNT 1 + +static void exynos_ufs_phy_config(struct exynos_ufs_phy *phy, + const struct exynos_ufs_phy_cfg *cfg, u8 lane) +{ + enum {LANE_0, LANE_1}; /* lane index */ + + switch (lane) { + case LANE_0: + writel(cfg->val, (phy)->reg_pma + cfg->off_0); + break; + case LANE_1: + if (cfg->id == PHY_TRSV_BLK) + writel(cfg->val, (phy)->reg_pma + cfg->off_1); + break; + } +} + +static bool match_cfg_to_pwr_mode(u8 desc, u8 required_pwr) +{ + if (IS_PWR_MODE_ANY(desc)) + return true; + + if (IS_PWR_MODE_HS(required_pwr) && IS_PWR_MODE_HS_ANY(desc)) + return true; + + if (COMP_PWR_MODE(required_pwr, desc)) + return true; + + if (COMP_PWR_MODE_MD(required_pwr, desc) && + COMP_PWR_MODE_GEAR(required_pwr, desc) && + COMP_PWR_MODE_SER(required_pwr, desc)) + return true; + + return false; +} + +int exynos_ufs_phy_calibrate(struct phy *phy, enum phy_cfg_tag tag, u8 pwr) +{ + struct exynos_ufs_phy *ufs_phy = get_exynos_ufs_phy(phy); + struct exynos_ufs_phy_cfg **cfgs = ufs_phy->cfg; + const struct exynos_ufs_phy_cfg *cfg; + int i; + + if (unlikely(tag < CFG_PRE_INIT || tag >= CFG_TAG_MAX)) { + dev_err(ufs_phy->dev, "invalid phy config index %d\n", tag); + return -EINVAL; + } + + cfg = cfgs[tag]; + if (!cfg) + goto out; + + for_each_phy_cfg(cfg) { + for_each_phy_lane(ufs_phy, i) { + if (match_cfg_to_pwr_mode(cfg->desc, pwr)) + exynos_ufs_phy_config(ufs_phy, cfg, i); + } + } + +out: + return 0; +} + +void exynos_ufs_phy_set_lane_cnt(struct phy *phy, u8 lane_cnt) +{ + struct exynos_ufs_phy *ufs_phy = get_exynos_ufs_phy(phy); + + ufs_phy->lane_cnt = lane_cnt; +} + +int exynos_ufs_phy_wait_for_lock_acq(struct phy *phy) +{ + struct exynos_ufs_phy *ufs_phy = get_exynos_ufs_phy(phy); + const unsigned int timeout_us = 100000; + const unsigned int sleep_us = 10; + u32 val; + int err; + + err = readl_poll_timeout( + ufs_phy->reg_pma + PHY_APB_ADDR(PHY_PLL_LOCK_STATUS), + val, (val & PHY_PLL_LOCK_BIT), sleep_us, timeout_us); + if (err) { + dev_err(ufs_phy->dev, + "failed to get phy pll lock acquisition %d\n", err); + goto out; + } + + err = readl_poll_timeout( + ufs_phy->reg_pma + PHY_APB_ADDR(PHY_CDR_LOCK_STATUS), + val, (val & PHY_CDR_LOCK_BIT), sleep_us, timeout_us); + if (err) { + dev_err(ufs_phy->dev, + "failed to get phy cdr lock acquisition %d\n", err); + goto out; + } + +out: + return err; +} + +static int exynos_ufs_phy_power_on(struct phy *phy) +{ + struct exynos_ufs_phy *_phy = get_exynos_ufs_phy(phy); + + exynos_ufs_phy_ctrl_isol(_phy, false); + return 0; +} + +static int exynos_ufs_phy_power_off(struct phy *phy) +{ + struct exynos_ufs_phy *_phy = get_exynos_ufs_phy(phy); + + exynos_ufs_phy_ctrl_isol(_phy, true); + return 0; +} + +static struct phy_ops exynos_ufs_phy_ops = { + .power_on = exynos_ufs_phy_power_on, + .power_off = exynos_ufs_phy_power_off, +}; + +static struct exynos_ufs_phy_specific_ops phy_specific_ops = { + .calibrate_phy = exynos_ufs_phy_calibrate, + .set_lane_cnt = exynos_ufs_phy_set_lane_cnt, + .wait_for_lock_acq = exynos_ufs_phy_wait_for_lock_acq, +}; + +static const struct of_device_id exynos_ufs_phy_match[]; + +static int exynos_ufs_phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + const struct of_device_id *match; + struct exynos_ufs_phy *phy; + struct exynos_ufs_phy_info *phy_info; + struct phy *gen_phy; + struct phy_provider *phy_provider; + const struct exynos_ufs_phy_drvdata *drvdata; + int err = 0; + + match = of_match_node(exynos_ufs_phy_match, dev->of_node); + if (!match) { + err = -EINVAL; + dev_err(dev, "failed to get match_node\n"); + goto out; + } + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) { + err = -ENOMEM; + goto out; + } + + phy_info = devm_kzalloc(dev, sizeof(*phy_info), GFP_KERNEL); + if (!phy_info) { + err = -ENOMEM; + goto out; + } + + phy_info->exynos_ufs_privdata = phy; + phy_info->phy_specific_ops = &phy_specific_ops; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy-pma"); + phy->reg_pma = devm_ioremap_resource(dev, res); + if (IS_ERR(phy->reg_pma)) { + err = PTR_ERR(phy->reg_pma); + goto out; + } + + phy->reg_pmu = syscon_regmap_lookup_by_phandle( + dev->of_node, "samsung,pmu-syscon"); + if (IS_ERR(phy->reg_pmu)) { + err = PTR_ERR(phy->reg_pmu); + dev_err(dev, "failed syscon remap for pmu\n"); + goto out; + } + + gen_phy = devm_phy_create(dev, NULL, &exynos_ufs_phy_ops); + if (IS_ERR(gen_phy)) { + err = PTR_ERR(gen_phy); + dev_err(dev, "failed to create PHY for ufs-phy\n"); + goto out; + } + + drvdata = match->data; + phy->dev = dev; + phy->drvdata = drvdata; + phy->cfg = (struct exynos_ufs_phy_cfg **)drvdata->cfg; + phy->isol = &drvdata->isol; + phy->lane_cnt = PHY_DEF_LANE_CNT; + + phy_set_drvdata(gen_phy, phy_info); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(phy_provider)) { + err = PTR_ERR(phy_provider); + dev_err(dev, "failed to register phy-provider\n"); + goto out; + } +out: + return err; +} + +static const struct of_device_id exynos_ufs_phy_match[] = { + { + .compatible = "samsung,exynos7-ufs-phy", + .data = &exynos7_ufs_phy, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ufs_phy_match); + +static struct platform_driver exynos_ufs_phy_driver = { + .probe = exynos_ufs_phy_probe, + .driver = { + .name = "exynos-ufs-phy", + .owner = THIS_MODULE, + .of_match_table = exynos_ufs_phy_match, + }, +}; +module_platform_driver(exynos_ufs_phy_driver); +MODULE_DESCRIPTION("EXYNOS SoC UFS PHY Driver"); +MODULE_AUTHOR("Seungwon Jeon "); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/phy-exynos-ufs.h b/drivers/phy/phy-exynos-ufs.h new file mode 100644 index 0000000..7e3e309 --- /dev/null +++ b/drivers/phy/phy-exynos-ufs.h @@ -0,0 +1,88 @@ +/* + * UFS PHY driver for Samsung EXYNOS SoC + * + * Copyright (C) 2015 Samsung Electronics Co., Ltd. + * Author: Seungwon Jeon + * + * 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. + */ +#ifndef _PHY_EXYNOS_UFS_ +#define _PHY_EXYNOS_UFS_ + +#define PHY_COMN_BLK 1 +#define PHY_TRSV_BLK 2 +#define END_UFS_PHY_CFG { 0 } +#define PHY_TRSV_CH_OFFSET 0x30 +#define PHY_APB_ADDR(off) ((off) << 2) + +#define PHY_COMN_REG_CFG(o, v, d) { \ + .off_0 = PHY_APB_ADDR((o)), \ + .off_1 = 0, \ + .val = (v), \ + .desc = (d), \ + .id = PHY_COMN_BLK, \ +} + +#define PHY_TRSV_REG_CFG(o, v, d) { \ + .off_0 = PHY_APB_ADDR((o)), \ + .off_1 = PHY_APB_ADDR((o) + PHY_TRSV_CH_OFFSET), \ + .val = (v), \ + .desc = (d), \ + .id = PHY_TRSV_BLK, \ +} + +/* UFS PHY registers */ +#define PHY_PLL_LOCK_STATUS 0x1e +#define PHY_CDR_LOCK_STATUS 0x5e + +#define PHY_PLL_LOCK_BIT BIT(5) +#define PHY_CDR_LOCK_BIT BIT(4) + +struct exynos_ufs_phy_cfg { + u32 off_0; + u32 off_1; + u32 val; + u8 desc; + u8 id; +}; + +struct exynos_ufs_phy_drvdata { + const struct exynos_ufs_phy_cfg **cfg; + struct pmu_isol { + u32 offset; + u32 mask; + u32 en; + } isol; +}; + +struct exynos_ufs_phy { + struct device *dev; + void __iomem *reg_pma; + void __iomem *reg_pmu; + const struct exynos_ufs_phy_drvdata *drvdata; + struct exynos_ufs_phy_cfg **cfg; + const struct pmu_isol *isol; + u8 lane_cnt; +}; + +static inline struct exynos_ufs_phy *get_exynos_ufs_phy(struct phy *phy) +{ + struct exynos_ufs_phy_info *tmp; + + tmp = phy_get_drvdata(phy); + return (struct exynos_ufs_phy *)tmp->exynos_ufs_privdata; +} + +static inline void exynos_ufs_phy_ctrl_isol( + struct exynos_ufs_phy *phy, u32 isol) +{ + regmap_update_bits(phy->reg_pmu, phy->isol->offset, + phy->isol->mask, isol ? 0 : phy->isol->en); +} + +#include "phy-exynos7-ufs.h" + +#endif /* _PHY_EXYNOS_UFS_ */ diff --git a/drivers/phy/phy-exynos7-ufs.h b/drivers/phy/phy-exynos7-ufs.h new file mode 100644 index 0000000..6cd29d7 --- /dev/null +++ b/drivers/phy/phy-exynos7-ufs.h @@ -0,0 +1,89 @@ +/* + * UFS PHY driver for Samsung EXYNOS SoC + * + * Copyright (C) 2015 Samsung Electronics Co., Ltd. + * + * 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. + */ +#ifndef _PHY_EXYNOS7_UFS_H_ +#define _PHY_EXYNOS7_UFS_H_ + +#include "phy-exynos-ufs.h" + +#define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL 0x720 +#define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK 0x1 +#define EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN BIT(0) + +/* Calibration for phy initialization */ +static const struct exynos_ufs_phy_cfg exynos7_pre_init_cfg[] = { + PHY_COMN_REG_CFG(0x00f, 0xfa, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x010, 0x82, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x011, 0x1e, PWR_MODE_ANY), + PHY_COMN_REG_CFG(0x017, 0x84, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x035, 0x58, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x036, 0x32, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x037, 0x40, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x03b, 0x83, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x042, 0x88, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x043, 0xa6, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x048, 0x74, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x04c, 0x5b, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x04d, 0x83, PWR_MODE_ANY), + PHY_TRSV_REG_CFG(0x05c, 0x14, PWR_MODE_ANY), + END_UFS_PHY_CFG +}; + +static const struct exynos_ufs_phy_cfg exynos7_post_init_cfg[] = { + END_UFS_PHY_CFG +}; + +/* Calibration for HS mode series A/B */ +static const struct exynos_ufs_phy_cfg exynos7_pre_pwr_hs_cfg[] = { + PHY_COMN_REG_CFG(0x00f, 0xfa, PWR_MODE_HS_ANY), + PHY_COMN_REG_CFG(0x010, 0x82, PWR_MODE_HS_ANY), + PHY_COMN_REG_CFG(0x011, 0x1e, PWR_MODE_HS_ANY), + /* Setting order: 1st(0x16, 2nd(0x15) */ + PHY_COMN_REG_CFG(0x016, 0xff, PWR_MODE_HS_ANY), + PHY_COMN_REG_CFG(0x015, 0x80, PWR_MODE_HS_ANY), + PHY_COMN_REG_CFG(0x017, 0x94, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x036, 0x32, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x037, 0x43, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x038, 0x3f, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x042, 0x88, PWR_MODE_HS_G2_SER_A), + PHY_TRSV_REG_CFG(0x042, 0xbb, PWR_MODE_HS_G2_SER_B), + PHY_TRSV_REG_CFG(0x043, 0xa6, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x048, 0x74, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x034, 0x35, PWR_MODE_HS_G2_SER_A), + PHY_TRSV_REG_CFG(0x034, 0x36, PWR_MODE_HS_G2_SER_B), + PHY_TRSV_REG_CFG(0x035, 0x5b, PWR_MODE_HS_G2_SER_A), + PHY_TRSV_REG_CFG(0x035, 0x5c, PWR_MODE_HS_G2_SER_B), + END_UFS_PHY_CFG +}; + +/* Calibration for HS mode series A/B atfer PMC */ +static const struct exynos_ufs_phy_cfg exynos7_post_pwr_hs_cfg[] = { + PHY_COMN_REG_CFG(0x015, 0x00, PWR_MODE_HS_ANY), + PHY_TRSV_REG_CFG(0x04d, 0x83, PWR_MODE_HS_ANY), + END_UFS_PHY_CFG +}; + +static const struct exynos_ufs_phy_cfg *exynos7_ufs_phy_cfgs[CFG_TAG_MAX] = { + [CFG_PRE_INIT] = exynos7_pre_init_cfg, + [CFG_POST_INIT] = exynos7_post_init_cfg, + [CFG_PRE_PWR_HS] = exynos7_pre_pwr_hs_cfg, + [CFG_POST_PWR_HS] = exynos7_post_pwr_hs_cfg, +}; + +static struct exynos_ufs_phy_drvdata exynos7_ufs_phy = { + .cfg = exynos7_ufs_phy_cfgs, + .isol = { + .offset = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL, + .mask = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_MASK, + .en = EXYNOS7_EMBEDDED_COMBO_PHY_CTRL_EN, + }, +}; + +#endif /* _PHY_EXYNOS7_UFS_H_ */ diff --git a/include/linux/phy/phy-exynos-ufs.h b/include/linux/phy/phy-exynos-ufs.h new file mode 100644 index 0000000..e15bbea --- /dev/null +++ b/include/linux/phy/phy-exynos-ufs.h @@ -0,0 +1,101 @@ +/* + * phy-exynos-ufs.h - Header file for the UFS PHY of Exynos SoC + * + * Copyright (C) 2015 Samsung Electronics Co., Ltd. + * Author: Seungwon Jeon + * + * 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. + */ + +#ifndef _PHY_EXYNOS_UFS_H_ +#define _PHY_EXYNOS_UFS_H_ + +#include "phy.h" + +/* PHY calibration point */ +enum phy_cfg_tag { + CFG_PRE_INIT = 0, + CFG_POST_INIT = 1, + CFG_PRE_PWR_HS = 2, + CFG_POST_PWR_HS = 3, + CFG_TAG_MAX, +}; + +/* description for PHY calibration */ +enum { + /* applicable to any */ + PWR_DESC_ANY = 0, + /* mode */ + PWR_DESC_PWM = 1, + PWR_DESC_HS = 2, + /* series */ + PWR_DESC_SER_A = 1, + PWR_DESC_SER_B = 2, + /* gear */ + PWR_DESC_G1 = 1, + PWR_DESC_G2 = 2, + PWR_DESC_G3 = 3, + PWR_DESC_G4 = 4, + PWR_DESC_G5 = 5, + PWR_DESC_G6 = 6, + PWR_DESC_G7 = 7, + /* field mask */ + MD_MASK = 0x3, + SR_MASK = 0x3, + GR_MASK = 0x7, +}; + +#define PWR_MODE(g, s, m) ((((g) & GR_MASK) << 4) |\ + (((s) & SR_MASK) << 2) | ((m) & MD_MASK)) +#define PWR_MODE_HS(g, s) ((((g) & GR_MASK) << 4) |\ + (((s) & SR_MASK) << 2) | PWR_DESC_HS) +#define PWR_MODE_HS_G1_ANY PWR_MODE_HS(PWR_DESC_G1, PWR_DESC_ANY) +#define PWR_MODE_HS_G1_SER_A PWR_MODE_HS(PWR_DESC_G1, PWR_DESC_SER_A) +#define PWR_MODE_HS_G1_SER_B PWR_MODE_HS(PWR_DESC_G1, PWR_DESC_SER_B) +#define PWR_MODE_HS_G2_ANY PWR_MODE_HS(PWR_DESC_G2, PWR_DESC_ANY) +#define PWR_MODE_HS_G2_SER_A PWR_MODE_HS(PWR_DESC_G2, PWR_DESC_SER_A) +#define PWR_MODE_HS_G2_SER_B PWR_MODE_HS(PWR_DESC_G2, PWR_DESC_SER_B) +#define PWR_MODE_HS_G3_ANY PWR_MODE_HS(PWR_DESC_G3, PWR_DESC_ANY) +#define PWR_MODE_HS_G3_SER_A PWR_MODE_HS(PWR_DESC_G3, PWR_DESC_SER_A) +#define PWR_MODE_HS_G3_SER_B PWR_MODE_HS(PWR_DESC_G3, PWR_DESC_SER_B) +#define PWR_MODE_HS_ANY PWR_MODE(PWR_DESC_ANY,\ + PWR_DESC_ANY, PWR_DESC_HS) +#define PWR_MODE_PWM_ANY PWR_MODE(PWR_DESC_ANY,\ + PWR_DESC_ANY, PWR_DESC_PWM) +#define PWR_MODE_ANY PWR_MODE(PWR_DESC_ANY,\ + PWR_DESC_ANY, PWR_DESC_ANY) +#define IS_PWR_MODE_HS(d) (((d) & MD_MASK) == PWR_DESC_HS) +#define IS_PWR_MODE_PWM(d) (((d) & MD_MASK) == PWR_DESC_PWM) +#define IS_PWR_MODE_ANY(d) ((d) == PWR_MODE_ANY) +#define IS_PWR_MODE_HS_ANY(d) ((d) == PWR_MODE_HS_ANY) +#define COMP_PWR_MODE(a, b) ((a) == (b)) +#define COMP_PWR_MODE_GEAR(a, b) ((((a) >> 4) & GR_MASK) == \ + (((b) >> 4) & GR_MASK)) +#define COMP_PWR_MODE_SER(a, b) ((((a) >> 2) & SR_MASK) == \ + (((b) >> 2) & SR_MASK)) +#define COMP_PWR_MODE_MD(a, b) (((a) & MD_MASK) == ((b) & MD_MASK)) + +/** + * struct exynos_ufs_phy_specific_ops - pointers to functions for SoC specific + * implementation per phy. Each ufs phy should implement those functions + * as per its requirements + * @calibrate_phy: pointer to a function to calibrate phy. Returns 0 for + * success and non-zero for error. + * @set_lane_cnt: pointer to a function to set ufs lane count + * @wait_for_lock_acq: pointer to a function which waits for phy PLL lock + * acquisition. Returns 0 for success and non-zero for error. + */ +struct exynos_ufs_phy_specific_ops { + int (*calibrate_phy)(struct phy *phy, enum phy_cfg_tag tag, u8 pwr); + void (*set_lane_cnt)(struct phy *phy, u8 lane_cnt); + int (*wait_for_lock_acq)(struct phy *phy); +}; + +struct exynos_ufs_phy_info { + void *exynos_ufs_privdata; + struct exynos_ufs_phy_specific_ops *phy_specific_ops; +}; +#endif /* _PHY_EXYNOS_UFS_H_ */ -- 1.7.10.4