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Date: Thu, 15 Jan 2015 15:18:17 -0000
From: dovl@...eaurora.org
To: "Yaniv Gardi" <ygardi@...eaurora.org>
Cc: james.bottomley@...senpartnership.com, hch@...radead.org,
linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
linux-arm-msm@...r.kernel.org, santoshsy@...il.com,
linux-scsi-owner@...r.kernel.org, subhashj@...eaurora.org,
ygardi@...eaurora.org, noag@...eaurora.org, draviv@...eaurora.org,
"Kishon Vijay Abraham I" <kishon@...com>,
"Grant Likely" <grant.likely@...aro.org>,
"Rob Herring" <robh+dt@...nel.org>,
"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>
Subject: Re: [PATCH v7 2/5] phy: qcom-ufs: add support for 20nm phy
Reviewed-by: Dov Levenglick <dovl@...eaurora.org>
> This change adds a support for a 20nm qcom-ufs phy that is required in
> platforms that use ufs-qcom controller.
>
> Signed-off-by: Yaniv Gardi <ygardi@...eaurora.org>
>
> ---
> drivers/phy/Makefile | 1 +
> drivers/phy/phy-qcom-ufs-i.h | 43 +++++-
> drivers/phy/phy-qcom-ufs-qmp-20nm.c | 257
> ++++++++++++++++++++++++++++++++++++
> drivers/phy/phy-qcom-ufs-qmp-20nm.h | 235
> +++++++++++++++++++++++++++++++++
> include/linux/phy/phy-qcom-ufs.h | 59 +++++++++
> 5 files changed, 594 insertions(+), 1 deletion(-)
> create mode 100644 drivers/phy/phy-qcom-ufs-qmp-20nm.c
> create mode 100644 drivers/phy/phy-qcom-ufs-qmp-20nm.h
> create mode 100644 include/linux/phy/phy-qcom-ufs.h
>
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index 335965d..781b2fa 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -35,3 +35,4 @@ obj-$(CONFIG_PHY_XGENE) +=
> phy-xgene.o
> obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o
> obj-$(CONFIG_PHY_STIH41X_USB) += phy-stih41x-usb.o
> obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs.o
> +obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-20nm.o
> diff --git a/drivers/phy/phy-qcom-ufs-i.h b/drivers/phy/phy-qcom-ufs-i.h
> index dac200f..591a391 100644
> --- a/drivers/phy/phy-qcom-ufs-i.h
> +++ b/drivers/phy/phy-qcom-ufs-i.h
> @@ -15,15 +15,56 @@
> #ifndef UFS_QCOM_PHY_I_H_
> #define UFS_QCOM_PHY_I_H_
>
> +#include <linux/module.h>
> #include <linux/clk.h>
> +#include <linux/regulator/consumer.h>
> #include <linux/slab.h>
> -#include <linux/phy/phy.h>
> +#include <linux/phy/phy-qcom-ufs.h>
> #include <linux/platform_device.h>
> #include <linux/io.h>
> #include <linux/delay.h>
>
> +#define readl_poll_timeout(addr, val, cond, sleep_us, timeout_us) \
> +({ \
> + ktime_t timeout = ktime_add_us(ktime_get(), timeout_us); \
> + might_sleep_if(timeout_us); \
> + for (;;) { \
> + (val) = readl(addr); \
> + if (cond) \
> + break; \
> + if (timeout_us && ktime_compare(ktime_get(), timeout) > 0)
> { \
> + (val) = readl(addr); \
> + break; \
> + } \
> + if (sleep_us) \
> + usleep_range(DIV_ROUND_UP(sleep_us, 4), sleep_us);
> \
> + } \
> + (cond) ? 0 : -ETIMEDOUT; \
> +})
> +
> +#define UFS_QCOM_PHY_CAL_ENTRY(reg, val) \
> + { \
> + .reg_offset = reg, \
> + .cfg_value = val, \
> + }
> +
> #define UFS_QCOM_PHY_NAME_LEN 30
>
> +enum {
> + MASK_SERDES_START = 0x1,
> + MASK_PCS_READY = 0x1,
> +};
> +
> +enum {
> + OFFSET_SERDES_START = 0x0,
> +};
> +
> +struct ufs_qcom_phy_stored_attributes {
> + u32 att;
> + u32 value;
> +};
> +
> +
> struct ufs_qcom_phy_calibration {
> u32 reg_offset;
> u32 cfg_value;
> diff --git a/drivers/phy/phy-qcom-ufs-qmp-20nm.c
> b/drivers/phy/phy-qcom-ufs-qmp-20nm.c
> new file mode 100644
> index 0000000..8332f96
> --- /dev/null
> +++ b/drivers/phy/phy-qcom-ufs-qmp-20nm.c
> @@ -0,0 +1,257 @@
> +/*
> + * Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#include "phy-qcom-ufs-qmp-20nm.h"
> +
> +#define UFS_PHY_NAME "ufs_phy_qmp_20nm"
> +
> +static
> +int ufs_qcom_phy_qmp_20nm_phy_calibrate(struct ufs_qcom_phy
> *ufs_qcom_phy,
> + bool is_rate_B)
> +{
> + struct ufs_qcom_phy_calibration *tbl_A, *tbl_B;
> + int tbl_size_A, tbl_size_B;
> + u8 major = ufs_qcom_phy->host_ctrl_rev_major;
> + u16 minor = ufs_qcom_phy->host_ctrl_rev_minor;
> + u16 step = ufs_qcom_phy->host_ctrl_rev_step;
> + int err;
> +
> + if ((major == 0x1) && (minor == 0x002) && (step == 0x0000)) {
> + tbl_size_A = ARRAY_SIZE(phy_cal_table_rate_A_1_2_0);
> + tbl_A = phy_cal_table_rate_A_1_2_0;
> + } else if ((major == 0x1) && (minor == 0x003) && (step == 0x0000))
> {
> + tbl_size_A = ARRAY_SIZE(phy_cal_table_rate_A_1_3_0);
> + tbl_A = phy_cal_table_rate_A_1_3_0;
> + } else {
> + dev_err(ufs_qcom_phy->dev, "%s: Unknown UFS-PHY version,
> no calibration values\n",
> + __func__);
> + err = -ENODEV;
> + goto out;
> + }
> +
> + tbl_size_B = ARRAY_SIZE(phy_cal_table_rate_B);
> + tbl_B = phy_cal_table_rate_B;
> +
> + err = ufs_qcom_phy_calibrate(ufs_qcom_phy, tbl_A, tbl_size_A,
> + tbl_B, tbl_size_B,
> is_rate_B);
> +
> + if (err)
> + dev_err(ufs_qcom_phy->dev, "%s: ufs_qcom_phy_calibrate()
> failed %d\n",
> + __func__, err);
> +
> +out:
> + return err;
> +}
> +
> +static
> +void ufs_qcom_phy_qmp_20nm_advertise_quirks(struct ufs_qcom_phy
> *phy_common)
> +{
> + phy_common->quirks =
> + UFS_QCOM_PHY_QUIRK_HIBERN8_EXIT_AFTER_PHY_PWR_COLLAPSE;
> +}
> +
> +static int ufs_qcom_phy_qmp_20nm_init(struct phy *generic_phy)
> +{
> + struct ufs_qcom_phy_qmp_20nm *phy = phy_get_drvdata(generic_phy);
> + struct ufs_qcom_phy *phy_common = &phy->common_cfg;
> + int err = 0;
> +
> + err = ufs_qcom_phy_init_clks(generic_phy, phy_common);
> + if (err) {
> + dev_err(phy_common->dev, "%s: ufs_qcom_phy_init_clks()
> failed %d\n",
> + __func__, err);
> + goto out;
> + }
> +
> + err = ufs_qcom_phy_init_vregulators(generic_phy, phy_common);
> + if (err) {
> + dev_err(phy_common->dev, "%s:
> ufs_qcom_phy_init_vregulators() failed %d\n",
> + __func__, err);
> + goto out;
> + }
> +
> + ufs_qcom_phy_qmp_20nm_advertise_quirks(phy_common);
> +
> +out:
> + return err;
> +}
> +
> +static
> +void ufs_qcom_phy_qmp_20nm_power_control(struct ufs_qcom_phy *phy, bool
> val)
> +{
> + bool hibern8_exit_after_pwr_collapse = phy->quirks &
> + UFS_QCOM_PHY_QUIRK_HIBERN8_EXIT_AFTER_PHY_PWR_COLLAPSE;
> +
> + if (val) {
> + writel_relaxed(0x1, phy->mmio +
> UFS_PHY_POWER_DOWN_CONTROL);
> + /*
> + * Before any transactions involving PHY, ensure PHY knows
> + * that it's analog rail is powered ON.
> + */
> + mb();
> +
> + if (hibern8_exit_after_pwr_collapse) {
> + /*
> + * Give atleast 1us delay after restoring PHY
> analog
> + * power.
> + */
> + usleep_range(1, 2);
> + writel_relaxed(0x0A, phy->mmio +
> + QSERDES_COM_SYSCLK_EN_SEL_TXBAND);
> + writel_relaxed(0x08, phy->mmio +
> + QSERDES_COM_SYSCLK_EN_SEL_TXBAND);
> + /*
> + * Make sure workaround is deactivated before
> proceeding
> + * with normal PHY operations.
> + */
> + mb();
> + }
> + } else {
> + if (hibern8_exit_after_pwr_collapse) {
> + writel_relaxed(0x0A, phy->mmio +
> + QSERDES_COM_SYSCLK_EN_SEL_TXBAND);
> + writel_relaxed(0x02, phy->mmio +
> + QSERDES_COM_SYSCLK_EN_SEL_TXBAND);
> + /*
> + * Make sure that above workaround is activated
> before
> + * PHY analog power collapse.
> + */
> + mb();
> + }
> +
> + writel_relaxed(0x0, phy->mmio +
> UFS_PHY_POWER_DOWN_CONTROL);
> + /*
> + * ensure that PHY knows its PHY analog rail is going
> + * to be powered down
> + */
> + mb();
> + }
> +}
> +
> +static
> +void ufs_qcom_phy_qmp_20nm_set_tx_lane_enable(struct ufs_qcom_phy *phy,
> u32 val)
> +{
> + writel_relaxed(val & UFS_PHY_TX_LANE_ENABLE_MASK,
> + phy->mmio + UFS_PHY_TX_LANE_ENABLE);
> + mb();
> +}
> +
> +static inline void ufs_qcom_phy_qmp_20nm_start_serdes(struct ufs_qcom_phy
> *phy)
> +{
> + u32 tmp;
> +
> + tmp = readl_relaxed(phy->mmio + UFS_PHY_PHY_START);
> + tmp &= ~MASK_SERDES_START;
> + tmp |= (1 << OFFSET_SERDES_START);
> + writel_relaxed(tmp, phy->mmio + UFS_PHY_PHY_START);
> + mb();
> +}
> +
> +static int ufs_qcom_phy_qmp_20nm_is_pcs_ready(struct ufs_qcom_phy
> *phy_common)
> +{
> + int err = 0;
> + u32 val;
> +
> + err = readl_poll_timeout(phy_common->mmio +
> UFS_PHY_PCS_READY_STATUS,
> + val, (val & MASK_PCS_READY), 10, 1000000);
> + if (err)
> + dev_err(phy_common->dev, "%s: poll for pcs failed err =
> %d\n",
> + __func__, err);
> + return err;
> +}
> +
> +static struct phy_ops ufs_qcom_phy_qmp_20nm_phy_ops = {
> + .init = ufs_qcom_phy_qmp_20nm_init,
> + .exit = ufs_qcom_phy_exit,
> + .power_on = ufs_qcom_phy_power_on,
> + .power_off = ufs_qcom_phy_power_off,
> + .owner = THIS_MODULE,
> +};
> +
> +static struct ufs_qcom_phy_specific_ops phy_20nm_ops = {
> + .calibrate_phy = ufs_qcom_phy_qmp_20nm_phy_calibrate,
> + .start_serdes = ufs_qcom_phy_qmp_20nm_start_serdes,
> + .is_physical_coding_sublayer_ready =
> ufs_qcom_phy_qmp_20nm_is_pcs_ready,
> + .set_tx_lane_enable =
> ufs_qcom_phy_qmp_20nm_set_tx_lane_enable,
> + .power_control = ufs_qcom_phy_qmp_20nm_power_control,
> +};
> +
> +static int ufs_qcom_phy_qmp_20nm_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct phy *generic_phy;
> + struct ufs_qcom_phy_qmp_20nm *phy;
> + int err = 0;
> +
> + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
> + if (!phy) {
> + dev_err(dev, "%s: failed to allocate phy\n", __func__);
> + err = -ENOMEM;
> + goto out;
> + }
> +
> + generic_phy = ufs_qcom_phy_generic_probe(pdev, &phy->common_cfg,
> + &ufs_qcom_phy_qmp_20nm_phy_ops,
> &phy_20nm_ops);
> +
> + if (!generic_phy) {
> + dev_err(dev, "%s: ufs_qcom_phy_generic_probe() failed\n",
> + __func__);
> + err = -EIO;
> + goto out;
> + }
> +
> + phy_set_drvdata(generic_phy, phy);
> +
> + strlcpy(phy->common_cfg.name, UFS_PHY_NAME,
> + sizeof(phy->common_cfg.name));
> +
> +out:
> + return err;
> +}
> +
> +static int ufs_qcom_phy_qmp_20nm_remove(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct phy *generic_phy = to_phy(dev);
> + struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);
> + int err = 0;
> +
> + err = ufs_qcom_phy_remove(generic_phy, ufs_qcom_phy);
> + if (err)
> + dev_err(dev, "%s: ufs_qcom_phy_remove failed = %d\n",
> + __func__, err);
> +
> + return err;
> +}
> +
> +static const struct of_device_id ufs_qcom_phy_qmp_20nm_of_match[] = {
> + {.compatible = "qcom,ufs-phy-qmp-20nm"},
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, ufs_qcom_phy_qmp_20nm_of_match);
> +
> +static struct platform_driver ufs_qcom_phy_qmp_20nm_driver = {
> + .probe = ufs_qcom_phy_qmp_20nm_probe,
> + .remove = ufs_qcom_phy_qmp_20nm_remove,
> + .driver = {
> + .of_match_table = ufs_qcom_phy_qmp_20nm_of_match,
> + .name = "ufs_qcom_phy_qmp_20nm",
> + .owner = THIS_MODULE,
> + },
> +};
> +
> +module_platform_driver(ufs_qcom_phy_qmp_20nm_driver);
> +
> +MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY QMP 20nm");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/phy/phy-qcom-ufs-qmp-20nm.h
> b/drivers/phy/phy-qcom-ufs-qmp-20nm.h
> new file mode 100644
> index 0000000..4f3076b
> --- /dev/null
> +++ b/drivers/phy/phy-qcom-ufs-qmp-20nm.h
> @@ -0,0 +1,235 @@
> +/*
> + * Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#ifndef UFS_QCOM_PHY_QMP_20NM_H_
> +#define UFS_QCOM_PHY_QMP_20NM_H_
> +
> +#include "phy-qcom-ufs-i.h"
> +
> +/* QCOM UFS PHY control registers */
> +
> +#define COM_OFF(x) (0x000 + x)
> +#define PHY_OFF(x) (0xC00 + x)
> +#define TX_OFF(n, x) (0x400 + (0x400 * n) + x)
> +#define RX_OFF(n, x) (0x600 + (0x400 * n) + x)
> +
> +/* UFS PHY PLL block registers */
> +#define QSERDES_COM_SYS_CLK_CTRL COM_OFF(0x0)
> +#define QSERDES_COM_PLL_VCOTAIL_EN COM_OFF(0x04)
> +#define QSERDES_COM_PLL_CNTRL COM_OFF(0x14)
> +#define QSERDES_COM_PLL_IP_SETI COM_OFF(0x24)
> +#define QSERDES_COM_CORE_CLK_IN_SYNC_SEL COM_OFF(0x28)
> +#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN COM_OFF(0x30)
> +#define QSERDES_COM_PLL_CP_SETI COM_OFF(0x34)
> +#define QSERDES_COM_PLL_IP_SETP COM_OFF(0x38)
> +#define QSERDES_COM_PLL_CP_SETP COM_OFF(0x3C)
> +#define QSERDES_COM_SYSCLK_EN_SEL_TXBAND COM_OFF(0x48)
> +#define QSERDES_COM_RESETSM_CNTRL COM_OFF(0x4C)
> +#define QSERDES_COM_RESETSM_CNTRL2 COM_OFF(0x50)
> +#define QSERDES_COM_PLLLOCK_CMP1 COM_OFF(0x90)
> +#define QSERDES_COM_PLLLOCK_CMP2 COM_OFF(0x94)
> +#define QSERDES_COM_PLLLOCK_CMP3 COM_OFF(0x98)
> +#define QSERDES_COM_PLLLOCK_CMP_EN COM_OFF(0x9C)
> +#define QSERDES_COM_BGTC COM_OFF(0xA0)
> +#define QSERDES_COM_DEC_START1 COM_OFF(0xAC)
> +#define QSERDES_COM_PLL_AMP_OS COM_OFF(0xB0)
> +#define QSERDES_COM_RES_CODE_UP_OFFSET COM_OFF(0xD8)
> +#define QSERDES_COM_RES_CODE_DN_OFFSET COM_OFF(0xDC)
> +#define QSERDES_COM_DIV_FRAC_START1 COM_OFF(0x100)
> +#define QSERDES_COM_DIV_FRAC_START2 COM_OFF(0x104)
> +#define QSERDES_COM_DIV_FRAC_START3 COM_OFF(0x108)
> +#define QSERDES_COM_DEC_START2 COM_OFF(0x10C)
> +#define QSERDES_COM_PLL_RXTXEPCLK_EN COM_OFF(0x110)
> +#define QSERDES_COM_PLL_CRCTRL COM_OFF(0x114)
> +#define QSERDES_COM_PLL_CLKEPDIV COM_OFF(0x118)
> +
> +/* TX LANE n (0, 1) registers */
> +#define QSERDES_TX_EMP_POST1_LVL(n) TX_OFF(n, 0x08)
> +#define QSERDES_TX_DRV_LVL(n) TX_OFF(n, 0x0C)
> +#define QSERDES_TX_LANE_MODE(n) TX_OFF(n, 0x54)
> +
> +/* RX LANE n (0, 1) registers */
> +#define QSERDES_RX_CDR_CONTROL1(n) RX_OFF(n, 0x0)
> +#define QSERDES_RX_CDR_CONTROL_HALF(n) RX_OFF(n, 0x8)
> +#define QSERDES_RX_RX_EQ_GAIN1_LSB(n) RX_OFF(n, 0xA8)
> +#define QSERDES_RX_RX_EQ_GAIN1_MSB(n) RX_OFF(n, 0xAC)
> +#define QSERDES_RX_RX_EQ_GAIN2_LSB(n) RX_OFF(n, 0xB0)
> +#define QSERDES_RX_RX_EQ_GAIN2_MSB(n) RX_OFF(n, 0xB4)
> +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2(n) RX_OFF(n, 0xBC)
> +#define QSERDES_RX_CDR_CONTROL_QUARTER(n) RX_OFF(n, 0xC)
> +#define QSERDES_RX_SIGDET_CNTRL(n) RX_OFF(n, 0x100)
> +
> +/* UFS PHY registers */
> +#define UFS_PHY_PHY_START PHY_OFF(0x00)
> +#define UFS_PHY_POWER_DOWN_CONTROL PHY_OFF(0x4)
> +#define UFS_PHY_TX_LANE_ENABLE PHY_OFF(0x44)
> +#define UFS_PHY_PWM_G1_CLK_DIVIDER PHY_OFF(0x08)
> +#define UFS_PHY_PWM_G2_CLK_DIVIDER PHY_OFF(0x0C)
> +#define UFS_PHY_PWM_G3_CLK_DIVIDER PHY_OFF(0x10)
> +#define UFS_PHY_PWM_G4_CLK_DIVIDER PHY_OFF(0x14)
> +#define UFS_PHY_CORECLK_PWM_G1_CLK_DIVIDER PHY_OFF(0x34)
> +#define UFS_PHY_CORECLK_PWM_G2_CLK_DIVIDER PHY_OFF(0x38)
> +#define UFS_PHY_CORECLK_PWM_G3_CLK_DIVIDER PHY_OFF(0x3C)
> +#define UFS_PHY_CORECLK_PWM_G4_CLK_DIVIDER PHY_OFF(0x40)
> +#define UFS_PHY_OMC_STATUS_RDVAL PHY_OFF(0x68)
> +#define UFS_PHY_LINE_RESET_TIME PHY_OFF(0x28)
> +#define UFS_PHY_LINE_RESET_GRANULARITY PHY_OFF(0x2C)
> +#define UFS_PHY_TSYNC_RSYNC_CNTL PHY_OFF(0x48)
> +#define UFS_PHY_PLL_CNTL PHY_OFF(0x50)
> +#define UFS_PHY_TX_LARGE_AMP_DRV_LVL PHY_OFF(0x54)
> +#define UFS_PHY_TX_SMALL_AMP_DRV_LVL PHY_OFF(0x5C)
> +#define UFS_PHY_TX_LARGE_AMP_POST_EMP_LVL PHY_OFF(0x58)
> +#define UFS_PHY_TX_SMALL_AMP_POST_EMP_LVL PHY_OFF(0x60)
> +#define UFS_PHY_CFG_CHANGE_CNT_VAL PHY_OFF(0x64)
> +#define UFS_PHY_RX_SYNC_WAIT_TIME PHY_OFF(0x6C)
> +#define UFS_PHY_TX_MIN_SLEEP_NOCONFIG_TIME_CAPABILITY PHY_OFF(0xB4)
> +#define UFS_PHY_RX_MIN_SLEEP_NOCONFIG_TIME_CAPABILITY PHY_OFF(0xE0)
> +#define UFS_PHY_TX_MIN_STALL_NOCONFIG_TIME_CAPABILITY PHY_OFF(0xB8)
> +#define UFS_PHY_RX_MIN_STALL_NOCONFIG_TIME_CAPABILITY PHY_OFF(0xE4)
> +#define UFS_PHY_TX_MIN_SAVE_CONFIG_TIME_CAPABILITY PHY_OFF(0xBC)
> +#define UFS_PHY_RX_MIN_SAVE_CONFIG_TIME_CAPABILITY PHY_OFF(0xE8)
> +#define UFS_PHY_RX_PWM_BURST_CLOSURE_LENGTH_CAPABILITY PHY_OFF(0xFC)
> +#define UFS_PHY_RX_MIN_ACTIVATETIME_CAPABILITY PHY_OFF(0x100)
> +#define UFS_PHY_RX_SIGDET_CTRL3
> PHY_OFF(0x14c)
> +#define UFS_PHY_RMMI_ATTR_CTRL PHY_OFF(0x160)
> +#define UFS_PHY_RMMI_RX_CFGUPDT_L1 (1 << 7)
> +#define UFS_PHY_RMMI_TX_CFGUPDT_L1 (1 << 6)
> +#define UFS_PHY_RMMI_CFGWR_L1 (1 << 5)
> +#define UFS_PHY_RMMI_CFGRD_L1 (1 << 4)
> +#define UFS_PHY_RMMI_RX_CFGUPDT_L0 (1 << 3)
> +#define UFS_PHY_RMMI_TX_CFGUPDT_L0 (1 << 2)
> +#define UFS_PHY_RMMI_CFGWR_L0 (1 << 1)
> +#define UFS_PHY_RMMI_CFGRD_L0 (1 << 0)
> +#define UFS_PHY_RMMI_ATTRID PHY_OFF(0x164)
> +#define UFS_PHY_RMMI_ATTRWRVAL PHY_OFF(0x168)
> +#define UFS_PHY_RMMI_ATTRRDVAL_L0_STATUS PHY_OFF(0x16C)
> +#define UFS_PHY_RMMI_ATTRRDVAL_L1_STATUS PHY_OFF(0x170)
> +#define UFS_PHY_PCS_READY_STATUS PHY_OFF(0x174)
> +
> +#define UFS_PHY_TX_LANE_ENABLE_MASK 0x3
> +
> +/*
> + * This structure represents the 20nm specific phy.
> + * common_cfg MUST remain the first field in this structure
> + * in case extra fields are added. This way, when calling
> + * get_ufs_qcom_phy() of generic phy, we can extract the
> + * common phy structure (struct ufs_qcom_phy) out of it
> + * regardless of the relevant specific phy.
> + */
> +struct ufs_qcom_phy_qmp_20nm {
> + struct ufs_qcom_phy common_cfg;
> +};
> +
> +static struct ufs_qcom_phy_calibration phy_cal_table_rate_A_1_2_0[] = {
> + UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_POWER_DOWN_CONTROL, 0x01),
> + UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_SIGDET_CTRL3, 0x0D),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_VCOTAIL_EN, 0xe1),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CRCTRL, 0xcc),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_SYSCLK_EN_SEL_TXBAND, 0x08),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CLKEPDIV, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_RXTXEPCLK_EN, 0x10),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START1, 0x82),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START2, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START1, 0x80),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START2, 0x80),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START3, 0x40),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP1, 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP2, 0x19),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP3, 0x00),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP_EN, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RESETSM_CNTRL, 0x90),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RESETSM_CNTRL2, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL1(0), 0xf2),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_HALF(0), 0x0c),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_QUARTER(0), 0x12),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL1(1), 0xf2),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_HALF(1), 0x0c),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_QUARTER(1), 0x12),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_LSB(0), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_MSB(0), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_LSB(0), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_MSB(0), 0x00),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_LSB(1), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_MSB(1), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_LSB(1), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_MSB(1), 0x00),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CP_SETI, 0x3f),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_IP_SETP, 0x1b),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CP_SETP, 0x0f),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_IP_SETI, 0x01),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_EMP_POST1_LVL(0), 0x2F),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_DRV_LVL(0), 0x20),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_EMP_POST1_LVL(1), 0x2F),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_DRV_LVL(1), 0x20),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_LANE_MODE(0), 0x68),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_LANE_MODE(1), 0x68),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2(1), 0xdc),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2(0), 0xdc),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x3),
> +};
> +
> +static struct ufs_qcom_phy_calibration phy_cal_table_rate_A_1_3_0[] = {
> + UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_POWER_DOWN_CONTROL, 0x01),
> + UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_RX_SIGDET_CTRL3, 0x0D),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_VCOTAIL_EN, 0xe1),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CRCTRL, 0xcc),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_SYSCLK_EN_SEL_TXBAND, 0x08),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CLKEPDIV, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_RXTXEPCLK_EN, 0x10),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START1, 0x82),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START2, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START1, 0x80),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START2, 0x80),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START3, 0x40),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP1, 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP2, 0x19),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP3, 0x00),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP_EN, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RESETSM_CNTRL, 0x90),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RESETSM_CNTRL2, 0x03),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL1(0), 0xf2),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_HALF(0), 0x0c),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_QUARTER(0), 0x12),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL1(1), 0xf2),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_HALF(1), 0x0c),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_CDR_CONTROL_QUARTER(1), 0x12),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_LSB(0), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_MSB(0), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_LSB(0), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_MSB(0), 0x00),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_LSB(1), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_MSB(1), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_LSB(1), 0xff),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_MSB(1), 0x00),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CP_SETI, 0x2b),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_IP_SETP, 0x38),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CP_SETP, 0x3c),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RES_CODE_UP_OFFSET, 0x02),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RES_CODE_DN_OFFSET, 0x02),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_IP_SETI, 0x01),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CNTRL, 0x40),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_LANE_MODE(0), 0x68),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_LANE_MODE(1), 0x68),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2(1), 0xdc),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2(0), 0xdc),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x3),
> +};
> +
> +static struct ufs_qcom_phy_calibration phy_cal_table_rate_B[] = {
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START1, 0x98),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP1, 0x65),
> + UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLLLOCK_CMP2, 0x1e),
> +};
> +
> +#endif
> diff --git a/include/linux/phy/phy-qcom-ufs.h
> b/include/linux/phy/phy-qcom-ufs.h
> new file mode 100644
> index 0000000..9d18e9f
> --- /dev/null
> +++ b/include/linux/phy/phy-qcom-ufs.h
> @@ -0,0 +1,59 @@
> +/*
> + * Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#ifndef PHY_QCOM_UFS_H_
> +#define PHY_QCOM_UFS_H_
> +
> +#include "phy.h"
> +
> +/**
> + * ufs_qcom_phy_enable_ref_clk() - Enable the phy
> + * ref clock.
> + * @phy: reference to a generic phy
> + *
> + * returns 0 for success, and non-zero for error.
> + */
> +int ufs_qcom_phy_enable_ref_clk(struct phy *phy);
> +
> +/**
> + * ufs_qcom_phy_disable_ref_clk() - Disable the phy
> + * ref clock.
> + * @phy: reference to a generic phy.
> + */
> +void ufs_qcom_phy_disable_ref_clk(struct phy *phy);
> +
> +/**
> + * ufs_qcom_phy_enable_dev_ref_clk() - Enable the device
> + * ref clock.
> + * @phy: reference to a generic phy.
> + */
> +void ufs_qcom_phy_enable_dev_ref_clk(struct phy *phy);
> +
> +/**
> + * ufs_qcom_phy_disable_dev_ref_clk() - Disable the device
> + * ref clock.
> + * @phy: reference to a generic phy.
> + */
> +void ufs_qcom_phy_disable_dev_ref_clk(struct phy *phy);
> +
> +int ufs_qcom_phy_enable_iface_clk(struct phy *phy);
> +void ufs_qcom_phy_disable_iface_clk(struct phy *phy);
> +int ufs_qcom_phy_start_serdes(struct phy *phy);
> +int ufs_qcom_phy_set_tx_lane_enable(struct phy *phy, u32 tx_lanes);
> +int ufs_qcom_phy_calibrate_phy(struct phy *phy, bool is_rate_B);
> +int ufs_qcom_phy_is_pcs_ready(struct phy *phy);
> +void ufs_qcom_phy_save_controller_version(struct phy *phy,
> + u8 major, u16 minor, u16 step);
> +
> +#endif /* PHY_QCOM_UFS_H_ */
> --
> 1.8.5.2
>
> --
> QUALCOMM ISRAEL, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation
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