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linux/drivers/phy/tegra/xusb-tegra124.c
Thierry Reding e78fdbad1e phy: tegra: Don't use device-managed API to allocate ports 
The device-managed allocation API doesn't work well with the life-cycle
of device objects. Since ports have device objects allocated within, it
can lead to situations where these devices need to stay around until
after their parent pad controller has been unbound from its driver. The
device-managed memory allocated for the port objects will, however, get
freed when the pad controller unbinds from the driver. This can cause
use-after-free errors down the road.

Note that the device is deleted as part of the driver unbind operation,
so there isn't much that can be done with it after that point, but the
memory still needs to stay around to ensure none of the references are
invalidated.

One situation where this arises is when a VBUS supply is associated with
a USB 2 or 3 port. When that supply is released using regulator_put() an
SRCU call will queue the release of the device link connecting the port
and the regulator after a grace period. This means that the regulator is
going to keep on to the last reference of the port device even after the
pad controller driver was unbound (which is when the memory backing the
port device is freed).

Fix this by allocating port objects using non-device-managed memory. Add
release callbacks for these objects so that their memory gets freed when
the last reference goes away. This decouples the port devices' lifetime
from the "active" lifetime of the pad controller (i.e. the time during
which the pad controller driver owns the device).

Signed-off-by: Thierry Reding <treding@nvidia.com>
2020-03-19 14:00:05 +01:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/mailbox_client.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <soc/tegra/fuse.h>
#include "xusb.h"
#define FUSE_SKU_CALIB_HS_CURR_LEVEL_PADX_SHIFT(x) ((x) ? 15 : 0)
#define FUSE_SKU_CALIB_HS_CURR_LEVEL_PAD_MASK 0x3f
#define FUSE_SKU_CALIB_HS_IREF_CAP_SHIFT 13
#define FUSE_SKU_CALIB_HS_IREF_CAP_MASK 0x3
#define FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_SHIFT 11
#define FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_MASK 0x3
#define FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_SHIFT 7
#define FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_MASK 0xf
#define XUSB_PADCTL_USB2_PORT_CAP 0x008
#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_SHIFT(x) ((x) * 4)
#define XUSB_PADCTL_USB2_PORT_CAP_PORT_CAP_MASK 0x3
#define XUSB_PADCTL_USB2_PORT_CAP_DISABLED 0x0
#define XUSB_PADCTL_USB2_PORT_CAP_HOST 0x1
#define XUSB_PADCTL_USB2_PORT_CAP_DEVICE 0x2
#define XUSB_PADCTL_USB2_PORT_CAP_OTG 0x3
#define XUSB_PADCTL_SS_PORT_MAP 0x014
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(x) (1 << (((x) * 4) + 3))
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_SHIFT(x) ((x) * 4)
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(x) (0x7 << ((x) * 4))
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(x, v) (((v) & 0x7) << ((x) * 4))
#define XUSB_PADCTL_SS_PORT_MAP_PORT_MAP_MASK 0x7
#define XUSB_PADCTL_ELPG_PROGRAM 0x01c
#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26)
#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25)
#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24)
#define XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_VCORE_DOWN(x) (1 << (18 + (x) * 4))
#define XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN_EARLY(x) \
(1 << (17 + (x) * 4))
#define XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(x) (1 << (16 + (x) * 4))
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19)
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12)
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1)
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6)
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5)
#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4)
#define XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(x) (0x058 + (x) * 4)
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_SHIFT 24
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_MASK 0xff
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_VAL 0x24
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT 16
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_MASK 0x3f
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT 8
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_MASK 0x3f
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_SHIFT 8
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_MASK 0xffff
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_VAL 0xf070
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_SHIFT 4
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_MASK 0xf
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_VAL 0xf
#define XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(x) (0x068 + (x) * 4)
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT 24
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_MASK 0x1f
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT 16
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_MASK 0x7f
#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_VAL 0x002008ee
#define XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL2(x) ((x) < 2 ? 0x078 + (x) * 4 : \
0x0f8 + (x) * 4)
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_SHIFT 28
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_MASK 0x3
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_VAL 0x1
#define XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL5(x) ((x) < 2 ? 0x090 + (x) * 4 : \
0x11c + (x) * 4)
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL5_RX_QEYE_EN (1 << 8)
#define XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL6(x) ((x) < 2 ? 0x098 + (x) * 4 : \
0x128 + (x) * 4)
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT 24
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_G_Z_MASK 0x3f
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_TAP_MASK 0x1f
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_AMP_MASK 0x7f
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT 16
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK 0xff
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_G_Z 0x21
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_TAP 0x32
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_AMP 0x33
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_CTLE_Z 0x48
#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_LATCH_G_Z 0xa1
#define XUSB_PADCTL_USB2_OTG_PADX_CTL0(x) (0x0a0 + (x) * 4)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD_ZI (1 << 21)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD2 (1 << 20)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD (1 << 19)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_SHIFT 14
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_MASK 0x3
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_VAL(x) ((x) ? 0x0 : 0x3)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_SHIFT 6
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_MASK 0x3f
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_VAL 0x0e
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT 0
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_MASK 0x3f
#define XUSB_PADCTL_USB2_OTG_PADX_CTL1(x) (0x0ac + (x) * 4)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_SHIFT 9
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_MASK 0x3
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT 3
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_MASK 0x7
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DR (1 << 2)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DISC_FORCE_POWERUP (1 << 1)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_CHRP_FORCE_POWERUP (1 << 0)
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0 0x0b8
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD (1 << 12)
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT 2
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_MASK 0x7
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_VAL 0x5
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT 0
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_MASK 0x3
#define XUSB_PADCTL_HSIC_PADX_CTL0(x) (0x0c0 + (x) * 4)
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_SHIFT 12
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_MASK 0x7
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_SHIFT 8
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_MASK 0x7
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_SHIFT 4
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_MASK 0x7
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_SHIFT 0
#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_MASK 0x7
#define XUSB_PADCTL_HSIC_PADX_CTL1(x) (0x0c8 + (x) * 4)
#define XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE (1 << 10)
#define XUSB_PADCTL_HSIC_PAD_CTL1_RPU_DATA (1 << 9)
#define XUSB_PADCTL_HSIC_PAD_CTL1_RPD_STROBE (1 << 8)
#define XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA (1 << 7)
#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_ZI (1 << 5)
#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_RX (1 << 4)
#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_TRX (1 << 3)
#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_TX (1 << 2)
#define XUSB_PADCTL_HSIC_PAD_CTL1_AUTO_TERM_EN (1 << 0)
#define XUSB_PADCTL_HSIC_PADX_CTL2(x) (0x0d0 + (x) * 4)
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT 4
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_MASK 0x7
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT 0
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_MASK 0x7
#define XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL 0x0e0
#define XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL_STRB_TRIM_MASK 0x1f
#define XUSB_PADCTL_USB3_PAD_MUX 0x134
#define XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(x) (1 << (1 + (x)))
#define XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(x) (1 << (6 + (x)))
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_SHIFT 20
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_MASK 0x3
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2 0x13c
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_SHIFT 20
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_MASK 0xf
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_SHIFT 16
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_MASK 0xf
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TCLKOUT_EN (1 << 12)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TXCLKREF_SEL (1 << 4)
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_SHIFT 0
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_MASK 0x7
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL3 0x140
#define XUSB_PADCTL_IOPHY_PLL_S0_CTL3_RCAL_BYPASS (1 << 7)
#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148
#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1)
#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0)
#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL2 0x14c
#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL5 0x158
#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL6 0x15c
struct tegra124_xusb_fuse_calibration {
u32 hs_curr_level[3];
u32 hs_iref_cap;
u32 hs_term_range_adj;
u32 hs_squelch_level;
};
struct tegra124_xusb_padctl {
struct tegra_xusb_padctl base;
struct tegra124_xusb_fuse_calibration fuse;
};
static inline struct tegra124_xusb_padctl *
to_tegra124_xusb_padctl(struct tegra_xusb_padctl *padctl)
{
return container_of(padctl, struct tegra124_xusb_padctl, base);
}
static int tegra124_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
{
u32 value;
mutex_lock(&padctl->lock);
if (padctl->enable++ > 0)
goto out;
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
out:
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra124_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
{
u32 value;
mutex_lock(&padctl->lock);
if (WARN_ON(padctl->enable == 0))
goto out;
if (--padctl->enable > 0)
goto out;
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
out:
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra124_usb3_save_context(struct tegra_xusb_padctl *padctl,
unsigned int index)
{
struct tegra_xusb_usb3_port *port;
struct tegra_xusb_lane *lane;
u32 value, offset;
port = tegra_xusb_find_usb3_port(padctl, index);
if (!port)
return -ENODEV;
port->context_saved = true;
lane = port->base.lane;
if (lane->pad == padctl->pcie)
offset = XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL6(lane->index);
else
offset = XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL6;
value = padctl_readl(padctl, offset);
value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_TAP <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
padctl_writel(padctl, value, offset);
value = padctl_readl(padctl, offset) >>
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
port->tap1 = value & XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_TAP_MASK;
value = padctl_readl(padctl, offset);
value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_AMP <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
padctl_writel(padctl, value, offset);
value = padctl_readl(padctl, offset) >>
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
port->amp = value & XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_AMP_MASK;
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(index));
value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT));
value |= (port->tap1 <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
(port->amp <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT);
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(index));
value = padctl_readl(padctl, offset);
value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_LATCH_G_Z <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
padctl_writel(padctl, value, offset);
value = padctl_readl(padctl, offset);
value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_G_Z <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
padctl_writel(padctl, value, offset);
value = padctl_readl(padctl, offset) >>
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
port->ctle_g = value &
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_G_Z_MASK;
value = padctl_readl(padctl, offset);
value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_CTLE_Z <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
padctl_writel(padctl, value, offset);
value = padctl_readl(padctl, offset) >>
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
port->ctle_z = value &
XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_G_Z_MASK;
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT));
value |= (port->ctle_g <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
(port->ctle_z <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT);
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
return 0;
}
static int tegra124_hsic_set_idle(struct tegra_xusb_padctl *padctl,
unsigned int index, bool idle)
{
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
if (idle)
value |= XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA |
XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE;
else
value &= ~(XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA |
XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE);
padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
return 0;
}
#define TEGRA124_LANE(_name, _offset, _shift, _mask, _type) \
{ \
.name = _name, \
.offset = _offset, \
.shift = _shift, \
.mask = _mask, \
.num_funcs = ARRAY_SIZE(tegra124_##_type##_functions), \
.funcs = tegra124_##_type##_functions, \
}
static const char * const tegra124_usb2_functions[] = {
"snps",
"xusb",
"uart",
};
static const struct tegra_xusb_lane_soc tegra124_usb2_lanes[] = {
TEGRA124_LANE("usb2-0", 0x004, 0, 0x3, usb2),
TEGRA124_LANE("usb2-1", 0x004, 2, 0x3, usb2),
TEGRA124_LANE("usb2-2", 0x004, 4, 0x3, usb2),
};
static struct tegra_xusb_lane *
tegra124_usb2_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
unsigned int index)
{
struct tegra_xusb_usb2_lane *usb2;
int err;
usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
if (!usb2)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&usb2->base.list);
usb2->base.soc = &pad->soc->lanes[index];
usb2->base.index = index;
usb2->base.pad = pad;
usb2->base.np = np;
err = tegra_xusb_lane_parse_dt(&usb2->base, np);
if (err < 0) {
kfree(usb2);
return ERR_PTR(err);
}
return &usb2->base;
}
static void tegra124_usb2_lane_remove(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane);
kfree(usb2);
}
static const struct tegra_xusb_lane_ops tegra124_usb2_lane_ops = {
.probe = tegra124_usb2_lane_probe,
.remove = tegra124_usb2_lane_remove,
};
static int tegra124_usb2_phy_init(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_enable(lane->pad->padctl);
}
static int tegra124_usb2_phy_exit(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_disable(lane->pad->padctl);
}
static int tegra124_usb2_phy_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane);
struct tegra_xusb_usb2_pad *pad = to_usb2_pad(lane->pad);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
struct tegra124_xusb_padctl *priv;
struct tegra_xusb_usb2_port *port;
unsigned int index = lane->index;
u32 value;
int err;
port = tegra_xusb_find_usb2_port(padctl, index);
if (!port) {
dev_err(&phy->dev, "no port found for USB2 lane %u\n", index);
return -ENODEV;
}
priv = to_tegra124_xusb_padctl(padctl);
value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
value &= ~((XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_MASK <<
XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT) |
(XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_MASK <<
XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT));
value |= (priv->fuse.hs_squelch_level <<
XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT) |
(XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_VAL <<
XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT);
padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
value = padctl_readl(padctl, XUSB_PADCTL_USB2_PORT_CAP);
value &= ~(XUSB_PADCTL_USB2_PORT_CAP_PORT_CAP_MASK <<
XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_SHIFT(index));
value |= XUSB_PADCTL_USB2_PORT_CAP_HOST <<
XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_SHIFT(index);
padctl_writel(padctl, value, XUSB_PADCTL_USB2_PORT_CAP);
value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
value &= ~((XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_MASK <<
XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT) |
(XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_MASK <<
XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_SHIFT) |
(XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_MASK <<
XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_SHIFT) |
XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD |
XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD2 |
XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD_ZI);
value |= (priv->fuse.hs_curr_level[index] +
usb2->hs_curr_level_offset) <<
XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT;
value |= XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_VAL <<
XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_SHIFT;
value |= XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_VAL(index) <<
XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_SHIFT;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
value &= ~((XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_MASK <<
XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT) |
(XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_MASK <<
XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_SHIFT) |
XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DR |
XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_CHRP_FORCE_POWERUP |
XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DISC_FORCE_POWERUP);
value |= (priv->fuse.hs_term_range_adj <<
XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT) |
(priv->fuse.hs_iref_cap <<
XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_SHIFT);
padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
err = regulator_enable(port->supply);
if (err)
return err;
mutex_lock(&pad->lock);
if (pad->enable++ > 0)
goto out;
value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
value &= ~XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
out:
mutex_unlock(&pad->lock);
return 0;
}
static int tegra124_usb2_phy_power_off(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_usb2_pad *pad = to_usb2_pad(lane->pad);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
struct tegra_xusb_usb2_port *port;
u32 value;
port = tegra_xusb_find_usb2_port(padctl, lane->index);
if (!port) {
dev_err(&phy->dev, "no port found for USB2 lane %u\n",
lane->index);
return -ENODEV;
}
mutex_lock(&pad->lock);
if (WARN_ON(pad->enable == 0))
goto out;
if (--pad->enable > 0)
goto out;
value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
value |= XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
out:
regulator_disable(port->supply);
mutex_unlock(&pad->lock);
return 0;
}
static const struct phy_ops tegra124_usb2_phy_ops = {
.init = tegra124_usb2_phy_init,
.exit = tegra124_usb2_phy_exit,
.power_on = tegra124_usb2_phy_power_on,
.power_off = tegra124_usb2_phy_power_off,
.owner = THIS_MODULE,
};
static struct tegra_xusb_pad *
tegra124_usb2_pad_probe(struct tegra_xusb_padctl *padctl,
const struct tegra_xusb_pad_soc *soc,
struct device_node *np)
{
struct tegra_xusb_usb2_pad *usb2;
struct tegra_xusb_pad *pad;
int err;
usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
if (!usb2)
return ERR_PTR(-ENOMEM);
mutex_init(&usb2->lock);
pad = &usb2->base;
pad->ops = &tegra124_usb2_lane_ops;
pad->soc = soc;
err = tegra_xusb_pad_init(pad, padctl, np);
if (err < 0) {
kfree(usb2);
goto out;
}
err = tegra_xusb_pad_register(pad, &tegra124_usb2_phy_ops);
if (err < 0)
goto unregister;
dev_set_drvdata(&pad->dev, pad);
return pad;
unregister:
device_unregister(&pad->dev);
out:
return ERR_PTR(err);
}
static void tegra124_usb2_pad_remove(struct tegra_xusb_pad *pad)
{
struct tegra_xusb_usb2_pad *usb2 = to_usb2_pad(pad);
kfree(usb2);
}
static const struct tegra_xusb_pad_ops tegra124_usb2_ops = {
.probe = tegra124_usb2_pad_probe,
.remove = tegra124_usb2_pad_remove,
};
static const struct tegra_xusb_pad_soc tegra124_usb2_pad = {
.name = "usb2",
.num_lanes = ARRAY_SIZE(tegra124_usb2_lanes),
.lanes = tegra124_usb2_lanes,
.ops = &tegra124_usb2_ops,
};
static const char * const tegra124_ulpi_functions[] = {
"snps",
"xusb",
};
static const struct tegra_xusb_lane_soc tegra124_ulpi_lanes[] = {
TEGRA124_LANE("ulpi-0", 0x004, 12, 0x1, ulpi),
};
static struct tegra_xusb_lane *
tegra124_ulpi_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
unsigned int index)
{
struct tegra_xusb_ulpi_lane *ulpi;
int err;
ulpi = kzalloc(sizeof(*ulpi), GFP_KERNEL);
if (!ulpi)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&ulpi->base.list);
ulpi->base.soc = &pad->soc->lanes[index];
ulpi->base.index = index;
ulpi->base.pad = pad;
ulpi->base.np = np;
err = tegra_xusb_lane_parse_dt(&ulpi->base, np);
if (err < 0) {
kfree(ulpi);
return ERR_PTR(err);
}
return &ulpi->base;
}
static void tegra124_ulpi_lane_remove(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_ulpi_lane *ulpi = to_ulpi_lane(lane);
kfree(ulpi);
}
static const struct tegra_xusb_lane_ops tegra124_ulpi_lane_ops = {
.probe = tegra124_ulpi_lane_probe,
.remove = tegra124_ulpi_lane_remove,
};
static int tegra124_ulpi_phy_init(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_enable(lane->pad->padctl);
}
static int tegra124_ulpi_phy_exit(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_disable(lane->pad->padctl);
}
static int tegra124_ulpi_phy_power_on(struct phy *phy)
{
return 0;
}
static int tegra124_ulpi_phy_power_off(struct phy *phy)
{
return 0;
}
static const struct phy_ops tegra124_ulpi_phy_ops = {
.init = tegra124_ulpi_phy_init,
.exit = tegra124_ulpi_phy_exit,
.power_on = tegra124_ulpi_phy_power_on,
.power_off = tegra124_ulpi_phy_power_off,
.owner = THIS_MODULE,
};
static struct tegra_xusb_pad *
tegra124_ulpi_pad_probe(struct tegra_xusb_padctl *padctl,
const struct tegra_xusb_pad_soc *soc,
struct device_node *np)
{
struct tegra_xusb_ulpi_pad *ulpi;
struct tegra_xusb_pad *pad;
int err;
ulpi = kzalloc(sizeof(*ulpi), GFP_KERNEL);
if (!ulpi)
return ERR_PTR(-ENOMEM);
pad = &ulpi->base;
pad->ops = &tegra124_ulpi_lane_ops;
pad->soc = soc;
err = tegra_xusb_pad_init(pad, padctl, np);
if (err < 0) {
kfree(ulpi);
goto out;
}
err = tegra_xusb_pad_register(pad, &tegra124_ulpi_phy_ops);
if (err < 0)
goto unregister;
dev_set_drvdata(&pad->dev, pad);
return pad;
unregister:
device_unregister(&pad->dev);
out:
return ERR_PTR(err);
}
static void tegra124_ulpi_pad_remove(struct tegra_xusb_pad *pad)
{
struct tegra_xusb_ulpi_pad *ulpi = to_ulpi_pad(pad);
kfree(ulpi);
}
static const struct tegra_xusb_pad_ops tegra124_ulpi_ops = {
.probe = tegra124_ulpi_pad_probe,
.remove = tegra124_ulpi_pad_remove,
};
static const struct tegra_xusb_pad_soc tegra124_ulpi_pad = {
.name = "ulpi",
.num_lanes = ARRAY_SIZE(tegra124_ulpi_lanes),
.lanes = tegra124_ulpi_lanes,
.ops = &tegra124_ulpi_ops,
};
static const char * const tegra124_hsic_functions[] = {
"snps",
"xusb",
};
static const struct tegra_xusb_lane_soc tegra124_hsic_lanes[] = {
TEGRA124_LANE("hsic-0", 0x004, 14, 0x1, hsic),
TEGRA124_LANE("hsic-1", 0x004, 15, 0x1, hsic),
};
static struct tegra_xusb_lane *
tegra124_hsic_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
unsigned int index)
{
struct tegra_xusb_hsic_lane *hsic;
int err;
hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
if (!hsic)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&hsic->base.list);
hsic->base.soc = &pad->soc->lanes[index];
hsic->base.index = index;
hsic->base.pad = pad;
hsic->base.np = np;
err = tegra_xusb_lane_parse_dt(&hsic->base, np);
if (err < 0) {
kfree(hsic);
return ERR_PTR(err);
}
return &hsic->base;
}
static void tegra124_hsic_lane_remove(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_hsic_lane *hsic = to_hsic_lane(lane);
kfree(hsic);
}
static const struct tegra_xusb_lane_ops tegra124_hsic_lane_ops = {
.probe = tegra124_hsic_lane_probe,
.remove = tegra124_hsic_lane_remove,
};
static int tegra124_hsic_phy_init(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_enable(lane->pad->padctl);
}
static int tegra124_hsic_phy_exit(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_disable(lane->pad->padctl);
}
static int tegra124_hsic_phy_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_hsic_lane *hsic = to_hsic_lane(lane);
struct tegra_xusb_hsic_pad *pad = to_hsic_pad(lane->pad);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
int err;
err = regulator_enable(pad->supply);
if (err)
return err;
padctl_writel(padctl, hsic->strobe_trim,
XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL);
value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
if (hsic->auto_term)
value |= XUSB_PADCTL_HSIC_PAD_CTL1_AUTO_TERM_EN;
else
value &= ~XUSB_PADCTL_HSIC_PAD_CTL1_AUTO_TERM_EN;
padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL0(index));
value &= ~((XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_MASK <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_SHIFT) |
(XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_MASK <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_SHIFT) |
(XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_MASK <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_SHIFT) |
(XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_MASK <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_SHIFT));
value |= (hsic->tx_rtune_n <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_SHIFT) |
(hsic->tx_rtune_p <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_SHIFT) |
(hsic->tx_rslew_n <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_SHIFT) |
(hsic->tx_rslew_p <<
XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_SHIFT);
padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL0(index));
value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL2(index));
value &= ~((XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_MASK <<
XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT) |
(XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_MASK <<
XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT));
value |= (hsic->rx_strobe_trim <<
XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT) |
(hsic->rx_data_trim <<
XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT);
padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL2(index));
value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
value &= ~(XUSB_PADCTL_HSIC_PAD_CTL1_RPD_STROBE |
XUSB_PADCTL_HSIC_PAD_CTL1_RPU_DATA |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_RX |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_ZI |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_TRX |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_TX);
value |= XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA |
XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE;
padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
return 0;
}
static int tegra124_hsic_phy_power_off(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_hsic_pad *pad = to_hsic_pad(lane->pad);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
value |= XUSB_PADCTL_HSIC_PAD_CTL1_PD_RX |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_ZI |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_TRX |
XUSB_PADCTL_HSIC_PAD_CTL1_PD_TX;
padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
regulator_disable(pad->supply);
return 0;
}
static const struct phy_ops tegra124_hsic_phy_ops = {
.init = tegra124_hsic_phy_init,
.exit = tegra124_hsic_phy_exit,
.power_on = tegra124_hsic_phy_power_on,
.power_off = tegra124_hsic_phy_power_off,
.owner = THIS_MODULE,
};
static struct tegra_xusb_pad *
tegra124_hsic_pad_probe(struct tegra_xusb_padctl *padctl,
const struct tegra_xusb_pad_soc *soc,
struct device_node *np)
{
struct tegra_xusb_hsic_pad *hsic;
struct tegra_xusb_pad *pad;
int err;
hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
if (!hsic)
return ERR_PTR(-ENOMEM);
pad = &hsic->base;
pad->ops = &tegra124_hsic_lane_ops;
pad->soc = soc;
err = tegra_xusb_pad_init(pad, padctl, np);
if (err < 0) {
kfree(hsic);
goto out;
}
err = tegra_xusb_pad_register(pad, &tegra124_hsic_phy_ops);
if (err < 0)
goto unregister;
dev_set_drvdata(&pad->dev, pad);
return pad;
unregister:
device_unregister(&pad->dev);
out:
return ERR_PTR(err);
}
static void tegra124_hsic_pad_remove(struct tegra_xusb_pad *pad)
{
struct tegra_xusb_hsic_pad *hsic = to_hsic_pad(pad);
kfree(hsic);
}
static const struct tegra_xusb_pad_ops tegra124_hsic_ops = {
.probe = tegra124_hsic_pad_probe,
.remove = tegra124_hsic_pad_remove,
};
static const struct tegra_xusb_pad_soc tegra124_hsic_pad = {
.name = "hsic",
.num_lanes = ARRAY_SIZE(tegra124_hsic_lanes),
.lanes = tegra124_hsic_lanes,
.ops = &tegra124_hsic_ops,
};
static const char * const tegra124_pcie_functions[] = {
"pcie",
"usb3-ss",
"sata",
};
static const struct tegra_xusb_lane_soc tegra124_pcie_lanes[] = {
TEGRA124_LANE("pcie-0", 0x134, 16, 0x3, pcie),
TEGRA124_LANE("pcie-1", 0x134, 18, 0x3, pcie),
TEGRA124_LANE("pcie-2", 0x134, 20, 0x3, pcie),
TEGRA124_LANE("pcie-3", 0x134, 22, 0x3, pcie),
TEGRA124_LANE("pcie-4", 0x134, 24, 0x3, pcie),
};
static struct tegra_xusb_lane *
tegra124_pcie_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
unsigned int index)
{
struct tegra_xusb_pcie_lane *pcie;
int err;
pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
if (!pcie)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&pcie->base.list);
pcie->base.soc = &pad->soc->lanes[index];
pcie->base.index = index;
pcie->base.pad = pad;
pcie->base.np = np;
err = tegra_xusb_lane_parse_dt(&pcie->base, np);
if (err < 0) {
kfree(pcie);
return ERR_PTR(err);
}
return &pcie->base;
}
static void tegra124_pcie_lane_remove(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_pcie_lane *pcie = to_pcie_lane(lane);
kfree(pcie);
}
static const struct tegra_xusb_lane_ops tegra124_pcie_lane_ops = {
.probe = tegra124_pcie_lane_probe,
.remove = tegra124_pcie_lane_remove,
};
static int tegra124_pcie_phy_init(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_enable(lane->pad->padctl);
}
static int tegra124_pcie_phy_exit(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_disable(lane->pad->padctl);
}
static int tegra124_pcie_phy_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned long timeout;
int err = -ETIMEDOUT;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN |
XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN |
XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
timeout = jiffies + msecs_to_jiffies(50);
while (time_before(jiffies, timeout)) {
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
if (value & XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET) {
err = 0;
break;
}
usleep_range(100, 200);
}
value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
value |= XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->index);
padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
return err;
}
static int tegra124_pcie_phy_power_off(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
value &= ~XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->index);
padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
return 0;
}
static const struct phy_ops tegra124_pcie_phy_ops = {
.init = tegra124_pcie_phy_init,
.exit = tegra124_pcie_phy_exit,
.power_on = tegra124_pcie_phy_power_on,
.power_off = tegra124_pcie_phy_power_off,
.owner = THIS_MODULE,
};
static struct tegra_xusb_pad *
tegra124_pcie_pad_probe(struct tegra_xusb_padctl *padctl,
const struct tegra_xusb_pad_soc *soc,
struct device_node *np)
{
struct tegra_xusb_pcie_pad *pcie;
struct tegra_xusb_pad *pad;
int err;
pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
if (!pcie)
return ERR_PTR(-ENOMEM);
pad = &pcie->base;
pad->ops = &tegra124_pcie_lane_ops;
pad->soc = soc;
err = tegra_xusb_pad_init(pad, padctl, np);
if (err < 0) {
kfree(pcie);
goto out;
}
err = tegra_xusb_pad_register(pad, &tegra124_pcie_phy_ops);
if (err < 0)
goto unregister;
dev_set_drvdata(&pad->dev, pad);
return pad;
unregister:
device_unregister(&pad->dev);
out:
return ERR_PTR(err);
}
static void tegra124_pcie_pad_remove(struct tegra_xusb_pad *pad)
{
struct tegra_xusb_pcie_pad *pcie = to_pcie_pad(pad);
kfree(pcie);
}
static const struct tegra_xusb_pad_ops tegra124_pcie_ops = {
.probe = tegra124_pcie_pad_probe,
.remove = tegra124_pcie_pad_remove,
};
static const struct tegra_xusb_pad_soc tegra124_pcie_pad = {
.name = "pcie",
.num_lanes = ARRAY_SIZE(tegra124_pcie_lanes),
.lanes = tegra124_pcie_lanes,
.ops = &tegra124_pcie_ops,
};
static const struct tegra_xusb_lane_soc tegra124_sata_lanes[] = {
TEGRA124_LANE("sata-0", 0x134, 26, 0x3, pcie),
};
static struct tegra_xusb_lane *
tegra124_sata_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
unsigned int index)
{
struct tegra_xusb_sata_lane *sata;
int err;
sata = kzalloc(sizeof(*sata), GFP_KERNEL);
if (!sata)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&sata->base.list);
sata->base.soc = &pad->soc->lanes[index];
sata->base.index = index;
sata->base.pad = pad;
sata->base.np = np;
err = tegra_xusb_lane_parse_dt(&sata->base, np);
if (err < 0) {
kfree(sata);
return ERR_PTR(err);
}
return &sata->base;
}
static void tegra124_sata_lane_remove(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_sata_lane *sata = to_sata_lane(lane);
kfree(sata);
}
static const struct tegra_xusb_lane_ops tegra124_sata_lane_ops = {
.probe = tegra124_sata_lane_probe,
.remove = tegra124_sata_lane_remove,
};
static int tegra124_sata_phy_init(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_enable(lane->pad->padctl);
}
static int tegra124_sata_phy_exit(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
return tegra124_xusb_padctl_disable(lane->pad->padctl);
}
static int tegra124_sata_phy_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned long timeout;
int err = -ETIMEDOUT;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
timeout = jiffies + msecs_to_jiffies(50);
while (time_before(jiffies, timeout)) {
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
if (value & XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET) {
err = 0;
break;
}
usleep_range(100, 200);
}
value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
value |= XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(lane->index);
padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
return err;
}
static int tegra124_sata_phy_power_off(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
value &= ~XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(lane->index);
padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
return 0;
}
static const struct phy_ops tegra124_sata_phy_ops = {
.init = tegra124_sata_phy_init,
.exit = tegra124_sata_phy_exit,
.power_on = tegra124_sata_phy_power_on,
.power_off = tegra124_sata_phy_power_off,
.owner = THIS_MODULE,
};
static struct tegra_xusb_pad *
tegra124_sata_pad_probe(struct tegra_xusb_padctl *padctl,
const struct tegra_xusb_pad_soc *soc,
struct device_node *np)
{
struct tegra_xusb_sata_pad *sata;
struct tegra_xusb_pad *pad;
int err;
sata = kzalloc(sizeof(*sata), GFP_KERNEL);
if (!sata)
return ERR_PTR(-ENOMEM);
pad = &sata->base;
pad->ops = &tegra124_sata_lane_ops;
pad->soc = soc;
err = tegra_xusb_pad_init(pad, padctl, np);
if (err < 0) {
kfree(sata);
goto out;
}
err = tegra_xusb_pad_register(pad, &tegra124_sata_phy_ops);
if (err < 0)
goto unregister;
dev_set_drvdata(&pad->dev, pad);
return pad;
unregister:
device_unregister(&pad->dev);
out:
return ERR_PTR(err);
}
static void tegra124_sata_pad_remove(struct tegra_xusb_pad *pad)
{
struct tegra_xusb_sata_pad *sata = to_sata_pad(pad);
kfree(sata);
}
static const struct tegra_xusb_pad_ops tegra124_sata_ops = {
.probe = tegra124_sata_pad_probe,
.remove = tegra124_sata_pad_remove,
};
static const struct tegra_xusb_pad_soc tegra124_sata_pad = {
.name = "sata",
.num_lanes = ARRAY_SIZE(tegra124_sata_lanes),
.lanes = tegra124_sata_lanes,
.ops = &tegra124_sata_ops,
};
static const struct tegra_xusb_pad_soc *tegra124_pads[] = {
&tegra124_usb2_pad,
&tegra124_ulpi_pad,
&tegra124_hsic_pad,
&tegra124_pcie_pad,
&tegra124_sata_pad,
};
static int tegra124_usb2_port_enable(struct tegra_xusb_port *port)
{
return 0;
}
static void tegra124_usb2_port_disable(struct tegra_xusb_port *port)
{
}
static struct tegra_xusb_lane *
tegra124_usb2_port_map(struct tegra_xusb_port *port)
{
return tegra_xusb_find_lane(port->padctl, "usb2", port->index);
}
static const struct tegra_xusb_port_ops tegra124_usb2_port_ops = {
.release = tegra_xusb_usb2_port_release,
.remove = tegra_xusb_usb2_port_remove,
.enable = tegra124_usb2_port_enable,
.disable = tegra124_usb2_port_disable,
.map = tegra124_usb2_port_map,
};
static int tegra124_ulpi_port_enable(struct tegra_xusb_port *port)
{
return 0;
}
static void tegra124_ulpi_port_disable(struct tegra_xusb_port *port)
{
}
static struct tegra_xusb_lane *
tegra124_ulpi_port_map(struct tegra_xusb_port *port)
{
return tegra_xusb_find_lane(port->padctl, "ulpi", port->index);
}
static const struct tegra_xusb_port_ops tegra124_ulpi_port_ops = {
.release = tegra_xusb_ulpi_port_release,
.enable = tegra124_ulpi_port_enable,
.disable = tegra124_ulpi_port_disable,
.map = tegra124_ulpi_port_map,
};
static int tegra124_hsic_port_enable(struct tegra_xusb_port *port)
{
return 0;
}
static void tegra124_hsic_port_disable(struct tegra_xusb_port *port)
{
}
static struct tegra_xusb_lane *
tegra124_hsic_port_map(struct tegra_xusb_port *port)
{
return tegra_xusb_find_lane(port->padctl, "hsic", port->index);
}
static const struct tegra_xusb_port_ops tegra124_hsic_port_ops = {
.release = tegra_xusb_hsic_port_release,
.enable = tegra124_hsic_port_enable,
.disable = tegra124_hsic_port_disable,
.map = tegra124_hsic_port_map,
};
static int tegra124_usb3_port_enable(struct tegra_xusb_port *port)
{
struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
struct tegra_xusb_padctl *padctl = port->padctl;
struct tegra_xusb_lane *lane = usb3->base.lane;
unsigned int index = port->index, offset;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
if (!usb3->internal)
value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(index);
else
value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(index);
value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(index);
value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(index, usb3->port);
padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);
/*
* TODO: move this code into the PCIe/SATA PHY ->power_on() callbacks
* and conditionalize based on mux function? This seems to work, but
* might not be the exact proper sequence.
*/
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_SHIFT));
value |= (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_VAL <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_VAL <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_VAL <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_SHIFT);
if (usb3->context_saved) {
value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT));
value |= (usb3->ctle_g <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
(usb3->ctle_z <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT);
}
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
value = XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_VAL;
if (usb3->context_saved) {
value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
(XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_MASK <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT));
value |= (usb3->tap1 <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
(usb3->amp <<
XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT);
}
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(index));
if (lane->pad == padctl->pcie)
offset = XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL2(lane->index);
else
offset = XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL2;
value = padctl_readl(padctl, offset);
value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_MASK <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_SHIFT);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_VAL <<
XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_SHIFT;
padctl_writel(padctl, value, offset);
if (lane->pad == padctl->pcie)
offset = XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL5(lane->index);
else
offset = XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL5;
value = padctl_readl(padctl, offset);
value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL5_RX_QEYE_EN;
padctl_writel(padctl, value, offset);
/* Enable SATA PHY when SATA lane is used */
if (lane->pad == padctl->sata) {
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value &= ~(XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_MASK <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_SHIFT);
value |= 0x2 <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_SHIFT;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL2);
value &= ~((XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_MASK <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_SHIFT) |
(XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_MASK <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_SHIFT) |
(XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_MASK <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_SHIFT) |
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TCLKOUT_EN);
value |= (0x7 <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_SHIFT) |
(0x8 <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_SHIFT) |
(0x8 <<
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_SHIFT) |
XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TXCLKREF_SEL;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL2);
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL3);
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL3_RCAL_BYPASS;
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL3);
}
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_VCORE_DOWN(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN_EARLY(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
return 0;
}
static void tegra124_usb3_port_disable(struct tegra_xusb_port *port)
{
struct tegra_xusb_padctl *padctl = port->padctl;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN_EARLY(port->index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(port->index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(250, 350);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_VCORE_DOWN(port->index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(port->index);
value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(port->index, 0x7);
padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);
}
static const struct tegra_xusb_lane_map tegra124_usb3_map[] = {
{ 0, "pcie", 0 },
{ 1, "pcie", 1 },
{ 1, "sata", 0 },
{ 0, NULL, 0 },
};
static struct tegra_xusb_lane *
tegra124_usb3_port_map(struct tegra_xusb_port *port)
{
return tegra_xusb_port_find_lane(port, tegra124_usb3_map, "usb3-ss");
}
static const struct tegra_xusb_port_ops tegra124_usb3_port_ops = {
.release = tegra_xusb_usb3_port_release,
.remove = tegra_xusb_usb3_port_remove,
.enable = tegra124_usb3_port_enable,
.disable = tegra124_usb3_port_disable,
.map = tegra124_usb3_port_map,
};
static int
tegra124_xusb_read_fuse_calibration(struct tegra124_xusb_fuse_calibration *fuse)
{
unsigned int i;
int err;
u32 value;
err = tegra_fuse_readl(TEGRA_FUSE_SKU_CALIB_0, &value);
if (err < 0)
return err;
for (i = 0; i < ARRAY_SIZE(fuse->hs_curr_level); i++) {
fuse->hs_curr_level[i] =
(value >> FUSE_SKU_CALIB_HS_CURR_LEVEL_PADX_SHIFT(i)) &
FUSE_SKU_CALIB_HS_CURR_LEVEL_PAD_MASK;
}
fuse->hs_iref_cap =
(value >> FUSE_SKU_CALIB_HS_IREF_CAP_SHIFT) &
FUSE_SKU_CALIB_HS_IREF_CAP_MASK;
fuse->hs_term_range_adj =
(value >> FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_SHIFT) &
FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_MASK;
fuse->hs_squelch_level =
(value >> FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_SHIFT) &
FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_MASK;
return 0;
}
static struct tegra_xusb_padctl *
tegra124_xusb_padctl_probe(struct device *dev,
const struct tegra_xusb_padctl_soc *soc)
{
struct tegra124_xusb_padctl *padctl;
int err;
padctl = devm_kzalloc(dev, sizeof(*padctl), GFP_KERNEL);
if (!padctl)
return ERR_PTR(-ENOMEM);
padctl->base.dev = dev;
padctl->base.soc = soc;
err = tegra124_xusb_read_fuse_calibration(&padctl->fuse);
if (err < 0)
return ERR_PTR(err);
return &padctl->base;
}
static void tegra124_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
{
}
static const struct tegra_xusb_padctl_ops tegra124_xusb_padctl_ops = {
.probe = tegra124_xusb_padctl_probe,
.remove = tegra124_xusb_padctl_remove,
.usb3_save_context = tegra124_usb3_save_context,
.hsic_set_idle = tegra124_hsic_set_idle,
};
static const char * const tegra124_xusb_padctl_supply_names[] = {
"avdd-pll-utmip",
"avdd-pll-erefe",
"avdd-pex-pll",
"hvdd-pex-pll-e",
};
const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc = {
.num_pads = ARRAY_SIZE(tegra124_pads),
.pads = tegra124_pads,
.ports = {
.usb2 = {
.ops = &tegra124_usb2_port_ops,
.count = 3,
},
.ulpi = {
.ops = &tegra124_ulpi_port_ops,
.count = 1,
},
.hsic = {
.ops = &tegra124_hsic_port_ops,
.count = 2,
},
.usb3 = {
.ops = &tegra124_usb3_port_ops,
.count = 2,
},
},
.ops = &tegra124_xusb_padctl_ops,
.supply_names = tegra124_xusb_padctl_supply_names,
.num_supplies = ARRAY_SIZE(tegra124_xusb_padctl_supply_names),
};
EXPORT_SYMBOL_GPL(tegra124_xusb_padctl_soc);
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("NVIDIA Tegra 124 XUSB Pad Controller driver");
MODULE_LICENSE("GPL v2");
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