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phy: qcom: remove ufs qmp phy driver

Browse Source 
The UFS specific QMP PHY driver started off supporting the 14nm and
20nm hardware. With the 20nm support marked broken for a long time and
the 14nm support added to the common QMP PHY, this driver has not been
used in a while. So delete it

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200629145452.123035-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Vinod Koul 2020-06-29 20:24:52 +05:30
parent 1c59c2d95d
commit 02dca8c981
8 changed files with 0 additions and 1598 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/phy/qualcomm/Kconfig
View File

@ -59,30 +59,6 @@ config PHY_QCOM_QUSB2
PHY which is usually paired with either the ChipIdea or Synopsys DWC3
USB IPs on MSM SOCs.
config PHY_QCOM_UFS
tristate "Qualcomm UFS PHY driver"
depends on OF && ARCH_QCOM
select GENERIC_PHY
help
Support for UFS PHY on QCOM chipsets.
if PHY_QCOM_UFS
config PHY_QCOM_UFS_14NM
tristate
default PHY_QCOM_UFS
help
Support for 14nm UFS QMP phy present on QCOM chipsets.
config PHY_QCOM_UFS_20NM
tristate
default PHY_QCOM_UFS
depends on BROKEN
help
Support for 20nm UFS QMP phy present on QCOM chipsets.
endif
config PHY_QCOM_USB_HS
tristate "Qualcomm USB HS PHY module"
depends on USB_ULPI_BUS

3
drivers/phy/qualcomm/Makefile
View File

@ -6,9 +6,6 @@ obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
obj-$(CONFIG_PHY_QCOM_PCIE2) += phy-qcom-pcie2.o
obj-$(CONFIG_PHY_QCOM_QMP) += phy-qcom-qmp.o
obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o
obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs.o
obj-$(CONFIG_PHY_QCOM_UFS_14NM) += phy-qcom-ufs-qmp-14nm.o
obj-$(CONFIG_PHY_QCOM_UFS_20NM) += phy-qcom-ufs-qmp-20nm.o
obj-$(CONFIG_PHY_QCOM_USB_HS) += phy-qcom-usb-hs.o
obj-$(CONFIG_PHY_QCOM_USB_HSIC) += phy-qcom-usb-hsic.o
obj-$(CONFIG_PHY_QCOM_USB_HS_28NM) += phy-qcom-usb-hs-28nm.o

131
drivers/phy/qualcomm/phy-qcom-ufs-i.h
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@ -1,131 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
*/
#ifndef UFS_QCOM_PHY_I_H_
#define UFS_QCOM_PHY_I_H_
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/phy/phy.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
#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;
};
struct ufs_qcom_phy_vreg {
const char *name;
struct regulator *reg;
int max_uA;
int min_uV;
int max_uV;
bool enabled;
};
struct ufs_qcom_phy {
struct list_head list;
struct device *dev;
void __iomem *mmio;
void __iomem *dev_ref_clk_ctrl_mmio;
struct clk *tx_iface_clk;
struct clk *rx_iface_clk;
bool is_iface_clk_enabled;
struct clk *ref_clk_src;
struct clk *ref_clk_parent;
struct clk *ref_clk;
bool is_ref_clk_enabled;
bool is_dev_ref_clk_enabled;
struct ufs_qcom_phy_vreg vdda_pll;
struct ufs_qcom_phy_vreg vdda_phy;
struct ufs_qcom_phy_vreg vddp_ref_clk;
unsigned int quirks;
/*
* If UFS link is put into Hibern8 and if UFS PHY analog hardware is
* power collapsed (by clearing UFS_PHY_POWER_DOWN_CONTROL), Hibern8
* exit might fail even after powering on UFS PHY analog hardware.
* Enabling this quirk will help to solve above issue by doing
* custom PHY settings just before PHY analog power collapse.
*/
#define UFS_QCOM_PHY_QUIRK_HIBERN8_EXIT_AFTER_PHY_PWR_COLLAPSE BIT(0)
u8 host_ctrl_rev_major;
u16 host_ctrl_rev_minor;
u16 host_ctrl_rev_step;
char name[UFS_QCOM_PHY_NAME_LEN];
struct ufs_qcom_phy_calibration *cached_regs;
int cached_regs_table_size;
struct ufs_qcom_phy_specific_ops *phy_spec_ops;
enum phy_mode mode;
struct reset_control *ufs_reset;
};
/**
* struct ufs_qcom_phy_specific_ops - set of pointers to functions which have a
* specific implementation per phy. Each UFS phy, should implement
* those functions according to its spec and requirements
* @start_serdes: pointer to a function that starts the serdes
* @is_physical_coding_sublayer_ready: pointer to a function that
* checks pcs readiness. returns 0 for success and non-zero for error.
* @set_tx_lane_enable: pointer to a function that enable tx lanes
* @power_control: pointer to a function that controls analog rail of phy
* and writes to QSERDES_RX_SIGDET_CNTRL attribute
*/
struct ufs_qcom_phy_specific_ops {
int (*calibrate)(struct ufs_qcom_phy *ufs_qcom_phy, bool is_rate_B);
void (*start_serdes)(struct ufs_qcom_phy *phy);
int (*is_physical_coding_sublayer_ready)(struct ufs_qcom_phy *phy);
void (*set_tx_lane_enable)(struct ufs_qcom_phy *phy, u32 val);
void (*power_control)(struct ufs_qcom_phy *phy, bool val);
};
struct ufs_qcom_phy *get_ufs_qcom_phy(struct phy *generic_phy);
int ufs_qcom_phy_power_on(struct phy *generic_phy);
int ufs_qcom_phy_power_off(struct phy *generic_phy);
int ufs_qcom_phy_init_clks(struct ufs_qcom_phy *phy_common);
int ufs_qcom_phy_init_vregulators(struct ufs_qcom_phy *phy_common);
int ufs_qcom_phy_remove(struct phy *generic_phy,
struct ufs_qcom_phy *ufs_qcom_phy);
struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
struct ufs_qcom_phy *common_cfg,
const struct phy_ops *ufs_qcom_phy_gen_ops,
struct ufs_qcom_phy_specific_ops *phy_spec_ops);
int ufs_qcom_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy,
struct ufs_qcom_phy_calibration *tbl_A, int tbl_size_A,
struct ufs_qcom_phy_calibration *tbl_B, int tbl_size_B,
bool is_rate_B);
#endif

172
drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.c
View File

@ -1,172 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
*/
#include "phy-qcom-ufs-qmp-14nm.h"
#define UFS_PHY_NAME "ufs_phy_qmp_14nm"
#define UFS_PHY_VDDA_PHY_UV (925000)
static
int ufs_qcom_phy_qmp_14nm_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy,
bool is_rate_B)
{
int tbl_size_A = ARRAY_SIZE(phy_cal_table_rate_A);
int tbl_size_B = ARRAY_SIZE(phy_cal_table_rate_B);
int err;
err = ufs_qcom_phy_calibrate(ufs_qcom_phy, phy_cal_table_rate_A,
tbl_size_A, phy_cal_table_rate_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);
return err;
}
static
void ufs_qcom_phy_qmp_14nm_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_14nm_set_mode(struct phy *generic_phy,
enum phy_mode mode, int submode)
{
struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
phy_common->mode = PHY_MODE_INVALID;
if (mode > 0)
phy_common->mode = mode;
return 0;
}
static
void ufs_qcom_phy_qmp_14nm_power_control(struct ufs_qcom_phy *phy, bool val)
{
writel_relaxed(val ? 0x1 : 0x0, phy->mmio + UFS_PHY_POWER_DOWN_CONTROL);
/*
* Before any transactions involving PHY, ensure PHY knows
* that it's analog rail is powered ON (or OFF).
*/
mb();
}
static inline
void ufs_qcom_phy_qmp_14nm_set_tx_lane_enable(struct ufs_qcom_phy *phy, u32 val)
{
/*
* 14nm PHY does not have TX_LANE_ENABLE register.
* Implement this function so as not to propagate error to caller.
*/
}
static inline void ufs_qcom_phy_qmp_14nm_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);
/* Ensure register value is committed */
mb();
}
static int ufs_qcom_phy_qmp_14nm_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 const struct phy_ops ufs_qcom_phy_qmp_14nm_phy_ops = {
.power_on = ufs_qcom_phy_power_on,
.power_off = ufs_qcom_phy_power_off,
.set_mode = ufs_qcom_phy_qmp_14nm_set_mode,
.owner = THIS_MODULE,
};
static struct ufs_qcom_phy_specific_ops phy_14nm_ops = {
.calibrate = ufs_qcom_phy_qmp_14nm_phy_calibrate,
.start_serdes = ufs_qcom_phy_qmp_14nm_start_serdes,
.is_physical_coding_sublayer_ready = ufs_qcom_phy_qmp_14nm_is_pcs_ready,
.set_tx_lane_enable = ufs_qcom_phy_qmp_14nm_set_tx_lane_enable,
.power_control = ufs_qcom_phy_qmp_14nm_power_control,
};
static int ufs_qcom_phy_qmp_14nm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct phy *generic_phy;
struct ufs_qcom_phy_qmp_14nm *phy;
struct ufs_qcom_phy *phy_common;
int err = 0;
phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
if (!phy) {
err = -ENOMEM;
goto out;
}
phy_common = &phy->common_cfg;
generic_phy = ufs_qcom_phy_generic_probe(pdev, phy_common,
&ufs_qcom_phy_qmp_14nm_phy_ops, &phy_14nm_ops);
if (!generic_phy) {
err = -EIO;
goto out;
}
err = ufs_qcom_phy_init_clks(phy_common);
if (err)
goto out;
err = ufs_qcom_phy_init_vregulators(phy_common);
if (err)
goto out;
phy_common->vdda_phy.max_uV = UFS_PHY_VDDA_PHY_UV;
phy_common->vdda_phy.min_uV = UFS_PHY_VDDA_PHY_UV;
ufs_qcom_phy_qmp_14nm_advertise_quirks(phy_common);
phy_set_drvdata(generic_phy, phy);
strlcpy(phy_common->name, UFS_PHY_NAME, sizeof(phy_common->name));
out:
return err;
}
static const struct of_device_id ufs_qcom_phy_qmp_14nm_of_match[] = {
{.compatible = "qcom,ufs-phy-qmp-14nm"},
{.compatible = "qcom,msm8996-ufs-phy-qmp-14nm"},
{},
};
MODULE_DEVICE_TABLE(of, ufs_qcom_phy_qmp_14nm_of_match);
static struct platform_driver ufs_qcom_phy_qmp_14nm_driver = {
.probe = ufs_qcom_phy_qmp_14nm_probe,
.driver = {
.of_match_table = ufs_qcom_phy_qmp_14nm_of_match,
.name = "ufs_qcom_phy_qmp_14nm",
},
};
module_platform_driver(ufs_qcom_phy_qmp_14nm_driver);
MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY QMP 14nm");
MODULE_LICENSE("GPL v2");

168
drivers/phy/qualcomm/phy-qcom-ufs-qmp-14nm.h
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@ -1,168 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
*/
#ifndef UFS_QCOM_PHY_QMP_14NM_H_
#define UFS_QCOM_PHY_QMP_14NM_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 QSERDES COM registers */
#define QSERDES_COM_BG_TIMER COM_OFF(0x0C)
#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN COM_OFF(0x34)
#define QSERDES_COM_SYS_CLK_CTRL COM_OFF(0x3C)
#define QSERDES_COM_LOCK_CMP1_MODE0 COM_OFF(0x4C)
#define QSERDES_COM_LOCK_CMP2_MODE0 COM_OFF(0x50)
#define QSERDES_COM_LOCK_CMP3_MODE0 COM_OFF(0x54)
#define QSERDES_COM_LOCK_CMP1_MODE1 COM_OFF(0x58)
#define QSERDES_COM_LOCK_CMP2_MODE1 COM_OFF(0x5C)
#define QSERDES_COM_LOCK_CMP3_MODE1 COM_OFF(0x60)
#define QSERDES_COM_CP_CTRL_MODE0 COM_OFF(0x78)
#define QSERDES_COM_CP_CTRL_MODE1 COM_OFF(0x7C)
#define QSERDES_COM_PLL_RCTRL_MODE0 COM_OFF(0x84)
#define QSERDES_COM_PLL_RCTRL_MODE1 COM_OFF(0x88)
#define QSERDES_COM_PLL_CCTRL_MODE0 COM_OFF(0x90)
#define QSERDES_COM_PLL_CCTRL_MODE1 COM_OFF(0x94)
#define QSERDES_COM_SYSCLK_EN_SEL COM_OFF(0xAC)
#define QSERDES_COM_RESETSM_CNTRL COM_OFF(0xB4)
#define QSERDES_COM_LOCK_CMP_EN COM_OFF(0xC8)
#define QSERDES_COM_LOCK_CMP_CFG COM_OFF(0xCC)
#define QSERDES_COM_DEC_START_MODE0 COM_OFF(0xD0)
#define QSERDES_COM_DEC_START_MODE1 COM_OFF(0xD4)
#define QSERDES_COM_DIV_FRAC_START1_MODE0 COM_OFF(0xDC)
#define QSERDES_COM_DIV_FRAC_START2_MODE0 COM_OFF(0xE0)
#define QSERDES_COM_DIV_FRAC_START3_MODE0 COM_OFF(0xE4)
#define QSERDES_COM_DIV_FRAC_START1_MODE1 COM_OFF(0xE8)
#define QSERDES_COM_DIV_FRAC_START2_MODE1 COM_OFF(0xEC)
#define QSERDES_COM_DIV_FRAC_START3_MODE1 COM_OFF(0xF0)
#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 COM_OFF(0x108)
#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 COM_OFF(0x10C)
#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 COM_OFF(0x110)
#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 COM_OFF(0x114)
#define QSERDES_COM_VCO_TUNE_CTRL COM_OFF(0x124)
#define QSERDES_COM_VCO_TUNE_MAP COM_OFF(0x128)
#define QSERDES_COM_VCO_TUNE1_MODE0 COM_OFF(0x12C)
#define QSERDES_COM_VCO_TUNE2_MODE0 COM_OFF(0x130)
#define QSERDES_COM_VCO_TUNE1_MODE1 COM_OFF(0x134)
#define QSERDES_COM_VCO_TUNE2_MODE1 COM_OFF(0x138)
#define QSERDES_COM_VCO_TUNE_TIMER1 COM_OFF(0x144)
#define QSERDES_COM_VCO_TUNE_TIMER2 COM_OFF(0x148)
#define QSERDES_COM_CLK_SELECT COM_OFF(0x174)
#define QSERDES_COM_HSCLK_SEL COM_OFF(0x178)
#define QSERDES_COM_CORECLK_DIV COM_OFF(0x184)
#define QSERDES_COM_CORE_CLK_EN COM_OFF(0x18C)
#define QSERDES_COM_CMN_CONFIG COM_OFF(0x194)
#define QSERDES_COM_SVS_MODE_CLK_SEL COM_OFF(0x19C)
#define QSERDES_COM_CORECLK_DIV_MODE1 COM_OFF(0x1BC)
/* UFS PHY registers */
#define UFS_PHY_PHY_START PHY_OFF(0x00)
#define UFS_PHY_POWER_DOWN_CONTROL PHY_OFF(0x04)
#define UFS_PHY_PCS_READY_STATUS PHY_OFF(0x168)
/* UFS PHY TX registers */
#define QSERDES_TX_HIGHZ_TRANSCEIVER_BIAS_DRVR_EN TX_OFF(0, 0x68)
#define QSERDES_TX_LANE_MODE TX_OFF(0, 0x94)
/* UFS PHY RX registers */
#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN RX_OFF(0, 0x40)
#define QSERDES_RX_RX_TERM_BW RX_OFF(0, 0x90)
#define QSERDES_RX_RX_EQ_GAIN1_LSB RX_OFF(0, 0xC4)
#define QSERDES_RX_RX_EQ_GAIN1_MSB RX_OFF(0, 0xC8)
#define QSERDES_RX_RX_EQ_GAIN2_LSB RX_OFF(0, 0xCC)
#define QSERDES_RX_RX_EQ_GAIN2_MSB RX_OFF(0, 0xD0)
#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 RX_OFF(0, 0xD8)
#define QSERDES_RX_SIGDET_CNTRL RX_OFF(0, 0x114)
#define QSERDES_RX_SIGDET_LVL RX_OFF(0, 0x118)
#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL RX_OFF(0, 0x11C)
#define QSERDES_RX_RX_INTERFACE_MODE RX_OFF(0, 0x12C)
/*
* This structure represents the 14nm 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_14nm {
struct ufs_qcom_phy common_cfg;
};
static struct ufs_qcom_phy_calibration phy_cal_table_rate_A[] = {
UFS_QCOM_PHY_CAL_ENTRY(UFS_PHY_POWER_DOWN_CONTROL, 0x01),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CMN_CONFIG, 0x0e),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_SYSCLK_EN_SEL, 0xd7),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CLK_SELECT, 0x30),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_SYS_CLK_CTRL, 0x06),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_BG_TIMER, 0x0a),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_HSCLK_SEL, 0x05),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CORECLK_DIV, 0x0a),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CORECLK_DIV_MODE1, 0x0a),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP_EN, 0x01),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE_CTRL, 0x10),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_RESETSM_CNTRL, 0x20),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CORE_CLK_EN, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP_CFG, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE_TIMER1, 0xff),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE_TIMER2, 0x3f),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE_MAP, 0x14),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_SVS_MODE_CLK_SEL, 0x05),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START_MODE0, 0x82),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CP_CTRL_MODE0, 0x0b),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_RCTRL_MODE0, 0x16),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CCTRL_MODE0, 0x28),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_INTEGLOOP_GAIN1_MODE0, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE1_MODE0, 0x28),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE2_MODE0, 0x02),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP1_MODE0, 0xff),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP2_MODE0, 0x0c),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP3_MODE0, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DEC_START_MODE1, 0x98),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START1_MODE1, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START2_MODE1, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_DIV_FRAC_START3_MODE1, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_CP_CTRL_MODE1, 0x0b),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_RCTRL_MODE1, 0x16),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_PLL_CCTRL_MODE1, 0x28),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_INTEGLOOP_GAIN0_MODE1, 0x80),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_INTEGLOOP_GAIN1_MODE1, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE1_MODE1, 0xd6),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE2_MODE1, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP1_MODE1, 0x32),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP2_MODE1, 0x0f),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_LOCK_CMP3_MODE1, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_HIGHZ_TRANSCEIVER_BIAS_DRVR_EN, 0x45),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_TX_LANE_MODE, 0x02),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_SIGDET_LVL, 0x24),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_SIGDET_CNTRL, 0x02),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_INTERFACE_MODE, 0x00),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x18),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0B),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_TERM_BW, 0x5B),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_LSB, 0xFF),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN1_MSB, 0x3F),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_LSB, 0xFF),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQ_GAIN2_MSB, 0x0F),
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x0E),
};
static struct ufs_qcom_phy_calibration phy_cal_table_rate_B[] = {
UFS_QCOM_PHY_CAL_ENTRY(QSERDES_COM_VCO_TUNE_MAP, 0x54),
};
#endif

226
drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.c
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@ -1,226 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
*/
#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_set_mode(struct phy *generic_phy,
enum phy_mode mode, int submode)
{
struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
phy_common->mode = PHY_MODE_INVALID;
if (mode > 0)
phy_common->mode = mode;
return 0;
}
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 const struct phy_ops ufs_qcom_phy_qmp_20nm_phy_ops = {
.power_on = ufs_qcom_phy_power_on,
.power_off = ufs_qcom_phy_power_off,
.set_mode = ufs_qcom_phy_qmp_20nm_set_mode,
.owner = THIS_MODULE,
};
static struct ufs_qcom_phy_specific_ops phy_20nm_ops = {
.calibrate = 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;
struct ufs_qcom_phy *phy_common;
int err = 0;
phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
if (!phy) {
err = -ENOMEM;
goto out;
}
phy_common = &phy->common_cfg;
generic_phy = ufs_qcom_phy_generic_probe(pdev, phy_common,
&ufs_qcom_phy_qmp_20nm_phy_ops, &phy_20nm_ops);
if (!generic_phy) {
err = -EIO;
goto out;
}
err = ufs_qcom_phy_init_clks(phy_common);
if (err)
goto out;
err = ufs_qcom_phy_init_vregulators(phy_common);
if (err)
goto out;
ufs_qcom_phy_qmp_20nm_advertise_quirks(phy_common);
phy_set_drvdata(generic_phy, phy);
strlcpy(phy_common->name, UFS_PHY_NAME, sizeof(phy_common->name));
out:
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,
.driver = {
.of_match_table = ufs_qcom_phy_qmp_20nm_of_match,
.name = "ufs_qcom_phy_qmp_20nm",
},
};
module_platform_driver(ufs_qcom_phy_qmp_20nm_driver);
MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY QMP 20nm");
MODULE_LICENSE("GPL v2");

226
drivers/phy/qualcomm/phy-qcom-ufs-qmp-20nm.h
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@ -1,226 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
*/
#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

648
drivers/phy/qualcomm/phy-qcom-ufs.c
View File

@ -1,648 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
*/
#include "phy-qcom-ufs-i.h"
#define MAX_PROP_NAME 32
#define VDDA_PHY_MIN_UV 1000000
#define VDDA_PHY_MAX_UV 1000000
#define VDDA_PLL_MIN_UV 1800000
#define VDDA_PLL_MAX_UV 1800000
#define VDDP_REF_CLK_MIN_UV 1200000
#define VDDP_REF_CLK_MAX_UV 1200000
int ufs_qcom_phy_calibrate(struct ufs_qcom_phy *ufs_qcom_phy,
struct ufs_qcom_phy_calibration *tbl_A,
int tbl_size_A,
struct ufs_qcom_phy_calibration *tbl_B,
int tbl_size_B, bool is_rate_B)
{
int i;
int ret = 0;
if (!tbl_A) {
dev_err(ufs_qcom_phy->dev, "%s: tbl_A is NULL", __func__);
ret = EINVAL;
goto out;
}
for (i = 0; i < tbl_size_A; i++)
writel_relaxed(tbl_A[i].cfg_value,
ufs_qcom_phy->mmio + tbl_A[i].reg_offset);
/*
* In case we would like to work in rate B, we need
* to override a registers that were configured in rate A table
* with registers of rate B table.
* table.
*/
if (is_rate_B) {
if (!tbl_B) {
dev_err(ufs_qcom_phy->dev, "%s: tbl_B is NULL",
__func__);
ret = EINVAL;
goto out;
}
for (i = 0; i < tbl_size_B; i++)
writel_relaxed(tbl_B[i].cfg_value,
ufs_qcom_phy->mmio + tbl_B[i].reg_offset);
}
/* flush buffered writes */
mb();
out:
return ret;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_calibrate);
/*
* This assumes the embedded phy structure inside generic_phy is of type
* struct ufs_qcom_phy. In order to function properly it's crucial
* to keep the embedded struct "struct ufs_qcom_phy common_cfg"
* as the first inside generic_phy.
*/
struct ufs_qcom_phy *get_ufs_qcom_phy(struct phy *generic_phy)
{
return (struct ufs_qcom_phy *)phy_get_drvdata(generic_phy);
}
EXPORT_SYMBOL_GPL(get_ufs_qcom_phy);
static
int ufs_qcom_phy_base_init(struct platform_device *pdev,
struct ufs_qcom_phy *phy_common)
{
struct device *dev = &pdev->dev;
struct resource *res;
int err = 0;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_mem");
phy_common->mmio = devm_ioremap_resource(dev, res);
if (IS_ERR((void const *)phy_common->mmio)) {
err = PTR_ERR((void const *)phy_common->mmio);
phy_common->mmio = NULL;
dev_err(dev, "%s: ioremap for phy_mem resource failed %d\n",
__func__, err);
return err;
}
/* "dev_ref_clk_ctrl_mem" is optional resource */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"dev_ref_clk_ctrl_mem");
phy_common->dev_ref_clk_ctrl_mmio = devm_ioremap_resource(dev, res);
if (IS_ERR((void const *)phy_common->dev_ref_clk_ctrl_mmio))
phy_common->dev_ref_clk_ctrl_mmio = NULL;
return 0;
}
struct phy *ufs_qcom_phy_generic_probe(struct platform_device *pdev,
struct ufs_qcom_phy *common_cfg,
const struct phy_ops *ufs_qcom_phy_gen_ops,
struct ufs_qcom_phy_specific_ops *phy_spec_ops)
{
int err;
struct device *dev = &pdev->dev;
struct phy *generic_phy = NULL;
struct phy_provider *phy_provider;
err = ufs_qcom_phy_base_init(pdev, common_cfg);
if (err) {
dev_err(dev, "%s: phy base init failed %d\n", __func__, err);
goto out;
}
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, "%s: failed to register phy %d\n", __func__, err);
goto out;
}
generic_phy = devm_phy_create(dev, NULL, ufs_qcom_phy_gen_ops);
if (IS_ERR(generic_phy)) {
err = PTR_ERR(generic_phy);
dev_err(dev, "%s: failed to create phy %d\n", __func__, err);
generic_phy = NULL;
goto out;
}
common_cfg->phy_spec_ops = phy_spec_ops;
common_cfg->dev = dev;
out:
return generic_phy;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_generic_probe);
static int ufs_qcom_phy_get_reset(struct ufs_qcom_phy *phy_common)
{
struct reset_control *reset;
if (phy_common->ufs_reset)
return 0;
reset = devm_reset_control_get_exclusive_by_index(phy_common->dev, 0);
if (IS_ERR(reset))
return PTR_ERR(reset);
phy_common->ufs_reset = reset;
return 0;
}
static int __ufs_qcom_phy_clk_get(struct device *dev,
const char *name, struct clk **clk_out, bool err_print)
{
struct clk *clk;
int err = 0;
clk = devm_clk_get(dev, name);
if (IS_ERR(clk)) {
err = PTR_ERR(clk);
if (err_print)
dev_err(dev, "failed to get %s err %d", name, err);
} else {
*clk_out = clk;
}
return err;
}
static int ufs_qcom_phy_clk_get(struct device *dev,
const char *name, struct clk **clk_out)
{
return __ufs_qcom_phy_clk_get(dev, name, clk_out, true);
}
int ufs_qcom_phy_init_clks(struct ufs_qcom_phy *phy_common)
{
int err;
if (of_device_is_compatible(phy_common->dev->of_node,
"qcom,msm8996-ufs-phy-qmp-14nm"))
goto skip_txrx_clk;
err = ufs_qcom_phy_clk_get(phy_common->dev, "tx_iface_clk",
&phy_common->tx_iface_clk);
if (err)
goto out;
err = ufs_qcom_phy_clk_get(phy_common->dev, "rx_iface_clk",
&phy_common->rx_iface_clk);
if (err)
goto out;
skip_txrx_clk:
err = ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk_src",
&phy_common->ref_clk_src);
if (err)
goto out;
/*
* "ref_clk_parent" is optional hence don't abort init if it's not
* found.
*/
__ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk_parent",
&phy_common->ref_clk_parent, false);
err = ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk",
&phy_common->ref_clk);
out:
return err;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_init_clks);
static int ufs_qcom_phy_init_vreg(struct device *dev,
struct ufs_qcom_phy_vreg *vreg,
const char *name)
{
int err = 0;
char prop_name[MAX_PROP_NAME];
vreg->name = name;
vreg->reg = devm_regulator_get(dev, name);
if (IS_ERR(vreg->reg)) {
err = PTR_ERR(vreg->reg);
dev_err(dev, "failed to get %s, %d\n", name, err);
goto out;
}
if (dev->of_node) {
snprintf(prop_name, MAX_PROP_NAME, "%s-max-microamp", name);
err = of_property_read_u32(dev->of_node,
prop_name, &vreg->max_uA);
if (err && err != -EINVAL) {
dev_err(dev, "%s: failed to read %s\n",
__func__, prop_name);
goto out;
} else if (err == -EINVAL || !vreg->max_uA) {
if (regulator_count_voltages(vreg->reg) > 0) {
dev_err(dev, "%s: %s is mandatory\n",
__func__, prop_name);
goto out;
}
err = 0;
}
}
if (!strcmp(name, "vdda-pll")) {
vreg->max_uV = VDDA_PLL_MAX_UV;
vreg->min_uV = VDDA_PLL_MIN_UV;
} else if (!strcmp(name, "vdda-phy")) {
vreg->max_uV = VDDA_PHY_MAX_UV;
vreg->min_uV = VDDA_PHY_MIN_UV;
} else if (!strcmp(name, "vddp-ref-clk")) {
vreg->max_uV = VDDP_REF_CLK_MAX_UV;
vreg->min_uV = VDDP_REF_CLK_MIN_UV;
}
out:
return err;
}
int ufs_qcom_phy_init_vregulators(struct ufs_qcom_phy *phy_common)
{
int err;
err = ufs_qcom_phy_init_vreg(phy_common->dev, &phy_common->vdda_pll,
"vdda-pll");
if (err)
goto out;
err = ufs_qcom_phy_init_vreg(phy_common->dev, &phy_common->vdda_phy,
"vdda-phy");
if (err)
goto out;
err = ufs_qcom_phy_init_vreg(phy_common->dev, &phy_common->vddp_ref_clk,
"vddp-ref-clk");
out:
return err;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_init_vregulators);
static int ufs_qcom_phy_cfg_vreg(struct device *dev,
struct ufs_qcom_phy_vreg *vreg, bool on)
{
int ret = 0;
struct regulator *reg = vreg->reg;
const char *name = vreg->name;
int min_uV;
int uA_load;
if (regulator_count_voltages(reg) > 0) {
min_uV = on ? vreg->min_uV : 0;
ret = regulator_set_voltage(reg, min_uV, vreg->max_uV);
if (ret) {
dev_err(dev, "%s: %s set voltage failed, err=%d\n",
__func__, name, ret);
goto out;
}
uA_load = on ? vreg->max_uA : 0;
ret = regulator_set_load(reg, uA_load);
if (ret >= 0) {
/*
* regulator_set_load() returns new regulator
* mode upon success.
*/
ret = 0;
} else {
dev_err(dev, "%s: %s set optimum mode(uA_load=%d) failed, err=%d\n",
__func__, name, uA_load, ret);
goto out;
}
}
out:
return ret;
}
static int ufs_qcom_phy_enable_vreg(struct device *dev,
struct ufs_qcom_phy_vreg *vreg)
{
int ret = 0;
if (!vreg || vreg->enabled)
goto out;
ret = ufs_qcom_phy_cfg_vreg(dev, vreg, true);
if (ret) {
dev_err(dev, "%s: ufs_qcom_phy_cfg_vreg() failed, err=%d\n",
__func__, ret);
goto out;
}
ret = regulator_enable(vreg->reg);
if (ret) {
dev_err(dev, "%s: enable failed, err=%d\n",
__func__, ret);
goto out;
}
vreg->enabled = true;
out:
return ret;
}
static int ufs_qcom_phy_enable_ref_clk(struct ufs_qcom_phy *phy)
{
int ret = 0;
if (phy->is_ref_clk_enabled)
goto out;
/*
* reference clock is propagated in a daisy-chained manner from
* source to phy, so ungate them at each stage.
*/
ret = clk_prepare_enable(phy->ref_clk_src);
if (ret) {
dev_err(phy->dev, "%s: ref_clk_src enable failed %d\n",
__func__, ret);
goto out;
}
/*
* "ref_clk_parent" is optional clock hence make sure that clk reference
* is available before trying to enable the clock.
*/
if (phy->ref_clk_parent) {
ret = clk_prepare_enable(phy->ref_clk_parent);
if (ret) {
dev_err(phy->dev, "%s: ref_clk_parent enable failed %d\n",
__func__, ret);
goto out_disable_src;
}
}
ret = clk_prepare_enable(phy->ref_clk);
if (ret) {
dev_err(phy->dev, "%s: ref_clk enable failed %d\n",
__func__, ret);
goto out_disable_parent;
}
phy->is_ref_clk_enabled = true;
goto out;
out_disable_parent:
if (phy->ref_clk_parent)
clk_disable_unprepare(phy->ref_clk_parent);
out_disable_src:
clk_disable_unprepare(phy->ref_clk_src);
out:
return ret;
}
static int ufs_qcom_phy_disable_vreg(struct device *dev,
struct ufs_qcom_phy_vreg *vreg)
{
int ret = 0;
if (!vreg || !vreg->enabled)
goto out;
ret = regulator_disable(vreg->reg);
if (!ret) {
/* ignore errors on applying disable config */
ufs_qcom_phy_cfg_vreg(dev, vreg, false);
vreg->enabled = false;
} else {
dev_err(dev, "%s: %s disable failed, err=%d\n",
__func__, vreg->name, ret);
}
out:
return ret;
}
static void ufs_qcom_phy_disable_ref_clk(struct ufs_qcom_phy *phy)
{
if (phy->is_ref_clk_enabled) {
clk_disable_unprepare(phy->ref_clk);
/*
* "ref_clk_parent" is optional clock hence make sure that clk
* reference is available before trying to disable the clock.
*/
if (phy->ref_clk_parent)
clk_disable_unprepare(phy->ref_clk_parent);
clk_disable_unprepare(phy->ref_clk_src);
phy->is_ref_clk_enabled = false;
}
}
/* Turn ON M-PHY RMMI interface clocks */
static int ufs_qcom_phy_enable_iface_clk(struct ufs_qcom_phy *phy)
{
int ret = 0;
if (phy->is_iface_clk_enabled)
goto out;
ret = clk_prepare_enable(phy->tx_iface_clk);
if (ret) {
dev_err(phy->dev, "%s: tx_iface_clk enable failed %d\n",
__func__, ret);
goto out;
}
ret = clk_prepare_enable(phy->rx_iface_clk);
if (ret) {
clk_disable_unprepare(phy->tx_iface_clk);
dev_err(phy->dev, "%s: rx_iface_clk enable failed %d. disabling also tx_iface_clk\n",
__func__, ret);
goto out;
}
phy->is_iface_clk_enabled = true;
out:
return ret;
}
/* Turn OFF M-PHY RMMI interface clocks */
static void ufs_qcom_phy_disable_iface_clk(struct ufs_qcom_phy *phy)
{
if (phy->is_iface_clk_enabled) {
clk_disable_unprepare(phy->tx_iface_clk);
clk_disable_unprepare(phy->rx_iface_clk);
phy->is_iface_clk_enabled = false;
}
}
static int ufs_qcom_phy_start_serdes(struct ufs_qcom_phy *ufs_qcom_phy)
{
int ret = 0;
if (!ufs_qcom_phy->phy_spec_ops->start_serdes) {
dev_err(ufs_qcom_phy->dev, "%s: start_serdes() callback is not supported\n",
__func__);
ret = -ENOTSUPP;
} else {
ufs_qcom_phy->phy_spec_ops->start_serdes(ufs_qcom_phy);
}
return ret;
}
int ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes)
{
struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);
int ret = 0;
if (!ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable) {
dev_err(ufs_qcom_phy->dev, "%s: set_tx_lane_enable() callback is not supported\n",
__func__);
ret = -ENOTSUPP;
} else {
ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable(ufs_qcom_phy,
tx_lanes);
}
return ret;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_set_tx_lane_enable);
void ufs_qcom_phy_save_controller_version(struct phy *generic_phy,
u8 major, u16 minor, u16 step)
{
struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);
ufs_qcom_phy->host_ctrl_rev_major = major;
ufs_qcom_phy->host_ctrl_rev_minor = minor;
ufs_qcom_phy->host_ctrl_rev_step = step;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_save_controller_version);
static int ufs_qcom_phy_is_pcs_ready(struct ufs_qcom_phy *ufs_qcom_phy)
{
if (!ufs_qcom_phy->phy_spec_ops->is_physical_coding_sublayer_ready) {
dev_err(ufs_qcom_phy->dev, "%s: is_physical_coding_sublayer_ready() callback is not supported\n",
__func__);
return -ENOTSUPP;
}
return ufs_qcom_phy->phy_spec_ops->
is_physical_coding_sublayer_ready(ufs_qcom_phy);
}
int ufs_qcom_phy_power_on(struct phy *generic_phy)
{
struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
struct device *dev = phy_common->dev;
bool is_rate_B = false;
int err;
err = ufs_qcom_phy_get_reset(phy_common);
if (err)
return err;
err = reset_control_assert(phy_common->ufs_reset);
if (err)
return err;
if (phy_common->mode == PHY_MODE_UFS_HS_B)
is_rate_B = true;
err = phy_common->phy_spec_ops->calibrate(phy_common, is_rate_B);
if (err)
return err;
err = reset_control_deassert(phy_common->ufs_reset);
if (err) {
dev_err(dev, "Failed to assert UFS PHY reset");
return err;
}
err = ufs_qcom_phy_start_serdes(phy_common);
if (err)
return err;
err = ufs_qcom_phy_is_pcs_ready(phy_common);
if (err)
return err;
err = ufs_qcom_phy_enable_vreg(dev, &phy_common->vdda_phy);
if (err) {
dev_err(dev, "%s enable vdda_phy failed, err=%d\n",
__func__, err);
goto out;
}
phy_common->phy_spec_ops->power_control(phy_common, true);
/* vdda_pll also enables ref clock LDOs so enable it first */
err = ufs_qcom_phy_enable_vreg(dev, &phy_common->vdda_pll);
if (err) {
dev_err(dev, "%s enable vdda_pll failed, err=%d\n",
__func__, err);
goto out_disable_phy;
}
err = ufs_qcom_phy_enable_iface_clk(phy_common);
if (err) {
dev_err(dev, "%s enable phy iface clock failed, err=%d\n",
__func__, err);
goto out_disable_pll;
}
err = ufs_qcom_phy_enable_ref_clk(phy_common);
if (err) {
dev_err(dev, "%s enable phy ref clock failed, err=%d\n",
__func__, err);
goto out_disable_iface_clk;
}
/* enable device PHY ref_clk pad rail */
if (phy_common->vddp_ref_clk.reg) {
err = ufs_qcom_phy_enable_vreg(dev,
&phy_common->vddp_ref_clk);
if (err) {
dev_err(dev, "%s enable vddp_ref_clk failed, err=%d\n",
__func__, err);
goto out_disable_ref_clk;
}
}
goto out;
out_disable_ref_clk:
ufs_qcom_phy_disable_ref_clk(phy_common);
out_disable_iface_clk:
ufs_qcom_phy_disable_iface_clk(phy_common);
out_disable_pll:
ufs_qcom_phy_disable_vreg(dev, &phy_common->vdda_pll);
out_disable_phy:
ufs_qcom_phy_disable_vreg(dev, &phy_common->vdda_phy);
out:
return err;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_on);
int ufs_qcom_phy_power_off(struct phy *generic_phy)
{
struct ufs_qcom_phy *phy_common = get_ufs_qcom_phy(generic_phy);
phy_common->phy_spec_ops->power_control(phy_common, false);
if (phy_common->vddp_ref_clk.reg)
ufs_qcom_phy_disable_vreg(phy_common->dev,
&phy_common->vddp_ref_clk);
ufs_qcom_phy_disable_ref_clk(phy_common);
ufs_qcom_phy_disable_iface_clk(phy_common);
ufs_qcom_phy_disable_vreg(phy_common->dev, &phy_common->vdda_pll);
ufs_qcom_phy_disable_vreg(phy_common->dev, &phy_common->vdda_phy);
reset_control_assert(phy_common->ufs_reset);
return 0;
}
EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_off);
MODULE_AUTHOR("Yaniv Gardi <ygardi@codeaurora.org>");
MODULE_AUTHOR("Vivek Gautam <vivek.gautam@codeaurora.org>");
MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY");
MODULE_LICENSE("GPL v2");