2444 lines
59 KiB
C
2444 lines
59 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* NVIDIA Tegra xHCI host controller driver
|
|
*
|
|
* Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved.
|
|
* Copyright (C) 2014 Google, Inc.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/iopoll.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/phy/phy.h>
|
|
#include <linux/phy/tegra/xusb.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/usb/ch9.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/pm_domain.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/regulator/consumer.h>
|
|
#include <linux/reset.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/usb/otg.h>
|
|
#include <linux/usb/phy.h>
|
|
#include <linux/usb/role.h>
|
|
#include <soc/tegra/pmc.h>
|
|
|
|
#include "xhci.h"
|
|
|
|
#define TEGRA_XHCI_SS_HIGH_SPEED 120000000
|
|
#define TEGRA_XHCI_SS_LOW_SPEED 12000000
|
|
|
|
/* FPCI CFG registers */
|
|
#define XUSB_CFG_1 0x004
|
|
#define XUSB_IO_SPACE_EN BIT(0)
|
|
#define XUSB_MEM_SPACE_EN BIT(1)
|
|
#define XUSB_BUS_MASTER_EN BIT(2)
|
|
#define XUSB_CFG_4 0x010
|
|
#define XUSB_BASE_ADDR_SHIFT 15
|
|
#define XUSB_BASE_ADDR_MASK 0x1ffff
|
|
#define XUSB_CFG_16 0x040
|
|
#define XUSB_CFG_24 0x060
|
|
#define XUSB_CFG_AXI_CFG 0x0f8
|
|
#define XUSB_CFG_ARU_C11_CSBRANGE 0x41c
|
|
#define XUSB_CFG_ARU_CONTEXT 0x43c
|
|
#define XUSB_CFG_ARU_CONTEXT_HS_PLS 0x478
|
|
#define XUSB_CFG_ARU_CONTEXT_FS_PLS 0x47c
|
|
#define XUSB_CFG_ARU_CONTEXT_HSFS_SPEED 0x480
|
|
#define XUSB_CFG_ARU_CONTEXT_HSFS_PP 0x484
|
|
#define XUSB_CFG_CSB_BASE_ADDR 0x800
|
|
|
|
/* FPCI mailbox registers */
|
|
/* XUSB_CFG_ARU_MBOX_CMD */
|
|
#define MBOX_DEST_FALC BIT(27)
|
|
#define MBOX_DEST_PME BIT(28)
|
|
#define MBOX_DEST_SMI BIT(29)
|
|
#define MBOX_DEST_XHCI BIT(30)
|
|
#define MBOX_INT_EN BIT(31)
|
|
/* XUSB_CFG_ARU_MBOX_DATA_IN and XUSB_CFG_ARU_MBOX_DATA_OUT */
|
|
#define CMD_DATA_SHIFT 0
|
|
#define CMD_DATA_MASK 0xffffff
|
|
#define CMD_TYPE_SHIFT 24
|
|
#define CMD_TYPE_MASK 0xff
|
|
/* XUSB_CFG_ARU_MBOX_OWNER */
|
|
#define MBOX_OWNER_NONE 0
|
|
#define MBOX_OWNER_FW 1
|
|
#define MBOX_OWNER_SW 2
|
|
#define XUSB_CFG_ARU_SMI_INTR 0x428
|
|
#define MBOX_SMI_INTR_FW_HANG BIT(1)
|
|
#define MBOX_SMI_INTR_EN BIT(3)
|
|
|
|
/* IPFS registers */
|
|
#define IPFS_XUSB_HOST_MSI_BAR_SZ_0 0x0c0
|
|
#define IPFS_XUSB_HOST_MSI_AXI_BAR_ST_0 0x0c4
|
|
#define IPFS_XUSB_HOST_MSI_FPCI_BAR_ST_0 0x0c8
|
|
#define IPFS_XUSB_HOST_MSI_VEC0_0 0x100
|
|
#define IPFS_XUSB_HOST_MSI_EN_VEC0_0 0x140
|
|
#define IPFS_XUSB_HOST_CONFIGURATION_0 0x180
|
|
#define IPFS_EN_FPCI BIT(0)
|
|
#define IPFS_XUSB_HOST_FPCI_ERROR_MASKS_0 0x184
|
|
#define IPFS_XUSB_HOST_INTR_MASK_0 0x188
|
|
#define IPFS_IP_INT_MASK BIT(16)
|
|
#define IPFS_XUSB_HOST_INTR_ENABLE_0 0x198
|
|
#define IPFS_XUSB_HOST_UFPCI_CONFIG_0 0x19c
|
|
#define IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0 0x1bc
|
|
#define IPFS_XUSB_HOST_MCCIF_FIFOCTRL_0 0x1dc
|
|
|
|
#define CSB_PAGE_SELECT_MASK 0x7fffff
|
|
#define CSB_PAGE_SELECT_SHIFT 9
|
|
#define CSB_PAGE_OFFSET_MASK 0x1ff
|
|
#define CSB_PAGE_SELECT(addr) ((addr) >> (CSB_PAGE_SELECT_SHIFT) & \
|
|
CSB_PAGE_SELECT_MASK)
|
|
#define CSB_PAGE_OFFSET(addr) ((addr) & CSB_PAGE_OFFSET_MASK)
|
|
|
|
/* Falcon CSB registers */
|
|
#define XUSB_FALC_CPUCTL 0x100
|
|
#define CPUCTL_STARTCPU BIT(1)
|
|
#define CPUCTL_STATE_HALTED BIT(4)
|
|
#define CPUCTL_STATE_STOPPED BIT(5)
|
|
#define XUSB_FALC_BOOTVEC 0x104
|
|
#define XUSB_FALC_DMACTL 0x10c
|
|
#define XUSB_FALC_IMFILLRNG1 0x154
|
|
#define IMFILLRNG1_TAG_MASK 0xffff
|
|
#define IMFILLRNG1_TAG_LO_SHIFT 0
|
|
#define IMFILLRNG1_TAG_HI_SHIFT 16
|
|
#define XUSB_FALC_IMFILLCTL 0x158
|
|
|
|
/* MP CSB registers */
|
|
#define XUSB_CSB_MP_ILOAD_ATTR 0x101a00
|
|
#define XUSB_CSB_MP_ILOAD_BASE_LO 0x101a04
|
|
#define XUSB_CSB_MP_ILOAD_BASE_HI 0x101a08
|
|
#define XUSB_CSB_MP_L2IMEMOP_SIZE 0x101a10
|
|
#define L2IMEMOP_SIZE_SRC_OFFSET_SHIFT 8
|
|
#define L2IMEMOP_SIZE_SRC_OFFSET_MASK 0x3ff
|
|
#define L2IMEMOP_SIZE_SRC_COUNT_SHIFT 24
|
|
#define L2IMEMOP_SIZE_SRC_COUNT_MASK 0xff
|
|
#define XUSB_CSB_MP_L2IMEMOP_TRIG 0x101a14
|
|
#define L2IMEMOP_ACTION_SHIFT 24
|
|
#define L2IMEMOP_INVALIDATE_ALL (0x40 << L2IMEMOP_ACTION_SHIFT)
|
|
#define L2IMEMOP_LOAD_LOCKED_RESULT (0x11 << L2IMEMOP_ACTION_SHIFT)
|
|
#define XUSB_CSB_MEMPOOL_L2IMEMOP_RESULT 0x101a18
|
|
#define L2IMEMOP_RESULT_VLD BIT(31)
|
|
#define XUSB_CSB_MP_APMAP 0x10181c
|
|
#define APMAP_BOOTPATH BIT(31)
|
|
|
|
#define IMEM_BLOCK_SIZE 256
|
|
|
|
struct tegra_xusb_fw_header {
|
|
__le32 boot_loadaddr_in_imem;
|
|
__le32 boot_codedfi_offset;
|
|
__le32 boot_codetag;
|
|
__le32 boot_codesize;
|
|
__le32 phys_memaddr;
|
|
__le16 reqphys_memsize;
|
|
__le16 alloc_phys_memsize;
|
|
__le32 rodata_img_offset;
|
|
__le32 rodata_section_start;
|
|
__le32 rodata_section_end;
|
|
__le32 main_fnaddr;
|
|
__le32 fwimg_cksum;
|
|
__le32 fwimg_created_time;
|
|
__le32 imem_resident_start;
|
|
__le32 imem_resident_end;
|
|
__le32 idirect_start;
|
|
__le32 idirect_end;
|
|
__le32 l2_imem_start;
|
|
__le32 l2_imem_end;
|
|
__le32 version_id;
|
|
u8 init_ddirect;
|
|
u8 reserved[3];
|
|
__le32 phys_addr_log_buffer;
|
|
__le32 total_log_entries;
|
|
__le32 dequeue_ptr;
|
|
__le32 dummy_var[2];
|
|
__le32 fwimg_len;
|
|
u8 magic[8];
|
|
__le32 ss_low_power_entry_timeout;
|
|
u8 num_hsic_port;
|
|
u8 padding[139]; /* Pad to 256 bytes */
|
|
};
|
|
|
|
struct tegra_xusb_phy_type {
|
|
const char *name;
|
|
unsigned int num;
|
|
};
|
|
|
|
struct tegra_xusb_mbox_regs {
|
|
u16 cmd;
|
|
u16 data_in;
|
|
u16 data_out;
|
|
u16 owner;
|
|
};
|
|
|
|
struct tegra_xusb_context_soc {
|
|
struct {
|
|
const unsigned int *offsets;
|
|
unsigned int num_offsets;
|
|
} ipfs;
|
|
|
|
struct {
|
|
const unsigned int *offsets;
|
|
unsigned int num_offsets;
|
|
} fpci;
|
|
};
|
|
|
|
struct tegra_xusb_soc {
|
|
const char *firmware;
|
|
const char * const *supply_names;
|
|
unsigned int num_supplies;
|
|
const struct tegra_xusb_phy_type *phy_types;
|
|
unsigned int num_types;
|
|
const struct tegra_xusb_context_soc *context;
|
|
|
|
struct {
|
|
struct {
|
|
unsigned int offset;
|
|
unsigned int count;
|
|
} usb2, ulpi, hsic, usb3;
|
|
} ports;
|
|
|
|
struct tegra_xusb_mbox_regs mbox;
|
|
|
|
bool scale_ss_clock;
|
|
bool has_ipfs;
|
|
bool lpm_support;
|
|
bool otg_reset_sspi;
|
|
};
|
|
|
|
struct tegra_xusb_context {
|
|
u32 *ipfs;
|
|
u32 *fpci;
|
|
};
|
|
|
|
struct tegra_xusb {
|
|
struct device *dev;
|
|
void __iomem *regs;
|
|
struct usb_hcd *hcd;
|
|
|
|
struct mutex lock;
|
|
|
|
int xhci_irq;
|
|
int mbox_irq;
|
|
int padctl_irq;
|
|
|
|
void __iomem *ipfs_base;
|
|
void __iomem *fpci_base;
|
|
|
|
const struct tegra_xusb_soc *soc;
|
|
|
|
struct regulator_bulk_data *supplies;
|
|
|
|
struct tegra_xusb_padctl *padctl;
|
|
|
|
struct clk *host_clk;
|
|
struct clk *falcon_clk;
|
|
struct clk *ss_clk;
|
|
struct clk *ss_src_clk;
|
|
struct clk *hs_src_clk;
|
|
struct clk *fs_src_clk;
|
|
struct clk *pll_u_480m;
|
|
struct clk *clk_m;
|
|
struct clk *pll_e;
|
|
|
|
struct reset_control *host_rst;
|
|
struct reset_control *ss_rst;
|
|
|
|
struct device *genpd_dev_host;
|
|
struct device *genpd_dev_ss;
|
|
bool use_genpd;
|
|
|
|
struct phy **phys;
|
|
unsigned int num_phys;
|
|
|
|
struct usb_phy **usbphy;
|
|
unsigned int num_usb_phys;
|
|
int otg_usb2_port;
|
|
int otg_usb3_port;
|
|
bool host_mode;
|
|
struct notifier_block id_nb;
|
|
struct work_struct id_work;
|
|
|
|
/* Firmware loading related */
|
|
struct {
|
|
size_t size;
|
|
void *virt;
|
|
dma_addr_t phys;
|
|
} fw;
|
|
|
|
bool suspended;
|
|
struct tegra_xusb_context context;
|
|
};
|
|
|
|
static struct hc_driver __read_mostly tegra_xhci_hc_driver;
|
|
|
|
static inline u32 fpci_readl(struct tegra_xusb *tegra, unsigned int offset)
|
|
{
|
|
return readl(tegra->fpci_base + offset);
|
|
}
|
|
|
|
static inline void fpci_writel(struct tegra_xusb *tegra, u32 value,
|
|
unsigned int offset)
|
|
{
|
|
writel(value, tegra->fpci_base + offset);
|
|
}
|
|
|
|
static inline u32 ipfs_readl(struct tegra_xusb *tegra, unsigned int offset)
|
|
{
|
|
return readl(tegra->ipfs_base + offset);
|
|
}
|
|
|
|
static inline void ipfs_writel(struct tegra_xusb *tegra, u32 value,
|
|
unsigned int offset)
|
|
{
|
|
writel(value, tegra->ipfs_base + offset);
|
|
}
|
|
|
|
static u32 csb_readl(struct tegra_xusb *tegra, unsigned int offset)
|
|
{
|
|
u32 page = CSB_PAGE_SELECT(offset);
|
|
u32 ofs = CSB_PAGE_OFFSET(offset);
|
|
|
|
fpci_writel(tegra, page, XUSB_CFG_ARU_C11_CSBRANGE);
|
|
|
|
return fpci_readl(tegra, XUSB_CFG_CSB_BASE_ADDR + ofs);
|
|
}
|
|
|
|
static void csb_writel(struct tegra_xusb *tegra, u32 value,
|
|
unsigned int offset)
|
|
{
|
|
u32 page = CSB_PAGE_SELECT(offset);
|
|
u32 ofs = CSB_PAGE_OFFSET(offset);
|
|
|
|
fpci_writel(tegra, page, XUSB_CFG_ARU_C11_CSBRANGE);
|
|
fpci_writel(tegra, value, XUSB_CFG_CSB_BASE_ADDR + ofs);
|
|
}
|
|
|
|
static int tegra_xusb_set_ss_clk(struct tegra_xusb *tegra,
|
|
unsigned long rate)
|
|
{
|
|
unsigned long new_parent_rate, old_parent_rate;
|
|
struct clk *clk = tegra->ss_src_clk;
|
|
unsigned int div;
|
|
int err;
|
|
|
|
if (clk_get_rate(clk) == rate)
|
|
return 0;
|
|
|
|
switch (rate) {
|
|
case TEGRA_XHCI_SS_HIGH_SPEED:
|
|
/*
|
|
* Reparent to PLLU_480M. Set divider first to avoid
|
|
* overclocking.
|
|
*/
|
|
old_parent_rate = clk_get_rate(clk_get_parent(clk));
|
|
new_parent_rate = clk_get_rate(tegra->pll_u_480m);
|
|
div = new_parent_rate / rate;
|
|
|
|
err = clk_set_rate(clk, old_parent_rate / div);
|
|
if (err)
|
|
return err;
|
|
|
|
err = clk_set_parent(clk, tegra->pll_u_480m);
|
|
if (err)
|
|
return err;
|
|
|
|
/*
|
|
* The rate should already be correct, but set it again just
|
|
* to be sure.
|
|
*/
|
|
err = clk_set_rate(clk, rate);
|
|
if (err)
|
|
return err;
|
|
|
|
break;
|
|
|
|
case TEGRA_XHCI_SS_LOW_SPEED:
|
|
/* Reparent to CLK_M */
|
|
err = clk_set_parent(clk, tegra->clk_m);
|
|
if (err)
|
|
return err;
|
|
|
|
err = clk_set_rate(clk, rate);
|
|
if (err)
|
|
return err;
|
|
|
|
break;
|
|
|
|
default:
|
|
dev_err(tegra->dev, "Invalid SS rate: %lu Hz\n", rate);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (clk_get_rate(clk) != rate) {
|
|
dev_err(tegra->dev, "SS clock doesn't match requested rate\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned long extract_field(u32 value, unsigned int start,
|
|
unsigned int count)
|
|
{
|
|
return (value >> start) & ((1 << count) - 1);
|
|
}
|
|
|
|
/* Command requests from the firmware */
|
|
enum tegra_xusb_mbox_cmd {
|
|
MBOX_CMD_MSG_ENABLED = 1,
|
|
MBOX_CMD_INC_FALC_CLOCK,
|
|
MBOX_CMD_DEC_FALC_CLOCK,
|
|
MBOX_CMD_INC_SSPI_CLOCK,
|
|
MBOX_CMD_DEC_SSPI_CLOCK,
|
|
MBOX_CMD_SET_BW, /* no ACK/NAK required */
|
|
MBOX_CMD_SET_SS_PWR_GATING,
|
|
MBOX_CMD_SET_SS_PWR_UNGATING,
|
|
MBOX_CMD_SAVE_DFE_CTLE_CTX,
|
|
MBOX_CMD_AIRPLANE_MODE_ENABLED, /* unused */
|
|
MBOX_CMD_AIRPLANE_MODE_DISABLED, /* unused */
|
|
MBOX_CMD_START_HSIC_IDLE,
|
|
MBOX_CMD_STOP_HSIC_IDLE,
|
|
MBOX_CMD_DBC_WAKE_STACK, /* unused */
|
|
MBOX_CMD_HSIC_PRETEND_CONNECT,
|
|
MBOX_CMD_RESET_SSPI,
|
|
MBOX_CMD_DISABLE_SS_LFPS_DETECTION,
|
|
MBOX_CMD_ENABLE_SS_LFPS_DETECTION,
|
|
|
|
MBOX_CMD_MAX,
|
|
|
|
/* Response message to above commands */
|
|
MBOX_CMD_ACK = 128,
|
|
MBOX_CMD_NAK
|
|
};
|
|
|
|
struct tegra_xusb_mbox_msg {
|
|
u32 cmd;
|
|
u32 data;
|
|
};
|
|
|
|
static inline u32 tegra_xusb_mbox_pack(const struct tegra_xusb_mbox_msg *msg)
|
|
{
|
|
return (msg->cmd & CMD_TYPE_MASK) << CMD_TYPE_SHIFT |
|
|
(msg->data & CMD_DATA_MASK) << CMD_DATA_SHIFT;
|
|
}
|
|
static inline void tegra_xusb_mbox_unpack(struct tegra_xusb_mbox_msg *msg,
|
|
u32 value)
|
|
{
|
|
msg->cmd = (value >> CMD_TYPE_SHIFT) & CMD_TYPE_MASK;
|
|
msg->data = (value >> CMD_DATA_SHIFT) & CMD_DATA_MASK;
|
|
}
|
|
|
|
static bool tegra_xusb_mbox_cmd_requires_ack(enum tegra_xusb_mbox_cmd cmd)
|
|
{
|
|
switch (cmd) {
|
|
case MBOX_CMD_SET_BW:
|
|
case MBOX_CMD_ACK:
|
|
case MBOX_CMD_NAK:
|
|
return false;
|
|
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
static int tegra_xusb_mbox_send(struct tegra_xusb *tegra,
|
|
const struct tegra_xusb_mbox_msg *msg)
|
|
{
|
|
bool wait_for_idle = false;
|
|
u32 value;
|
|
|
|
/*
|
|
* Acquire the mailbox. The firmware still owns the mailbox for
|
|
* ACK/NAK messages.
|
|
*/
|
|
if (!(msg->cmd == MBOX_CMD_ACK || msg->cmd == MBOX_CMD_NAK)) {
|
|
value = fpci_readl(tegra, tegra->soc->mbox.owner);
|
|
if (value != MBOX_OWNER_NONE) {
|
|
dev_err(tegra->dev, "mailbox is busy\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
fpci_writel(tegra, MBOX_OWNER_SW, tegra->soc->mbox.owner);
|
|
|
|
value = fpci_readl(tegra, tegra->soc->mbox.owner);
|
|
if (value != MBOX_OWNER_SW) {
|
|
dev_err(tegra->dev, "failed to acquire mailbox\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
wait_for_idle = true;
|
|
}
|
|
|
|
value = tegra_xusb_mbox_pack(msg);
|
|
fpci_writel(tegra, value, tegra->soc->mbox.data_in);
|
|
|
|
value = fpci_readl(tegra, tegra->soc->mbox.cmd);
|
|
value |= MBOX_INT_EN | MBOX_DEST_FALC;
|
|
fpci_writel(tegra, value, tegra->soc->mbox.cmd);
|
|
|
|
if (wait_for_idle) {
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(250);
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
value = fpci_readl(tegra, tegra->soc->mbox.owner);
|
|
if (value == MBOX_OWNER_NONE)
|
|
break;
|
|
|
|
usleep_range(10, 20);
|
|
}
|
|
|
|
if (time_after(jiffies, timeout))
|
|
value = fpci_readl(tegra, tegra->soc->mbox.owner);
|
|
|
|
if (value != MBOX_OWNER_NONE)
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t tegra_xusb_mbox_irq(int irq, void *data)
|
|
{
|
|
struct tegra_xusb *tegra = data;
|
|
u32 value;
|
|
|
|
/* clear mailbox interrupts */
|
|
value = fpci_readl(tegra, XUSB_CFG_ARU_SMI_INTR);
|
|
fpci_writel(tegra, value, XUSB_CFG_ARU_SMI_INTR);
|
|
|
|
if (value & MBOX_SMI_INTR_FW_HANG)
|
|
dev_err(tegra->dev, "controller firmware hang\n");
|
|
|
|
return IRQ_WAKE_THREAD;
|
|
}
|
|
|
|
static void tegra_xusb_mbox_handle(struct tegra_xusb *tegra,
|
|
const struct tegra_xusb_mbox_msg *msg)
|
|
{
|
|
struct tegra_xusb_padctl *padctl = tegra->padctl;
|
|
const struct tegra_xusb_soc *soc = tegra->soc;
|
|
struct device *dev = tegra->dev;
|
|
struct tegra_xusb_mbox_msg rsp;
|
|
unsigned long mask;
|
|
unsigned int port;
|
|
bool idle, enable;
|
|
int err = 0;
|
|
|
|
memset(&rsp, 0, sizeof(rsp));
|
|
|
|
switch (msg->cmd) {
|
|
case MBOX_CMD_INC_FALC_CLOCK:
|
|
case MBOX_CMD_DEC_FALC_CLOCK:
|
|
rsp.data = clk_get_rate(tegra->falcon_clk) / 1000;
|
|
if (rsp.data != msg->data)
|
|
rsp.cmd = MBOX_CMD_NAK;
|
|
else
|
|
rsp.cmd = MBOX_CMD_ACK;
|
|
|
|
break;
|
|
|
|
case MBOX_CMD_INC_SSPI_CLOCK:
|
|
case MBOX_CMD_DEC_SSPI_CLOCK:
|
|
if (tegra->soc->scale_ss_clock) {
|
|
err = tegra_xusb_set_ss_clk(tegra, msg->data * 1000);
|
|
if (err < 0)
|
|
rsp.cmd = MBOX_CMD_NAK;
|
|
else
|
|
rsp.cmd = MBOX_CMD_ACK;
|
|
|
|
rsp.data = clk_get_rate(tegra->ss_src_clk) / 1000;
|
|
} else {
|
|
rsp.cmd = MBOX_CMD_ACK;
|
|
rsp.data = msg->data;
|
|
}
|
|
|
|
break;
|
|
|
|
case MBOX_CMD_SET_BW:
|
|
/*
|
|
* TODO: Request bandwidth once EMC scaling is supported.
|
|
* Ignore for now since ACK/NAK is not required for SET_BW
|
|
* messages.
|
|
*/
|
|
break;
|
|
|
|
case MBOX_CMD_SAVE_DFE_CTLE_CTX:
|
|
err = tegra_xusb_padctl_usb3_save_context(padctl, msg->data);
|
|
if (err < 0) {
|
|
dev_err(dev, "failed to save context for USB3#%u: %d\n",
|
|
msg->data, err);
|
|
rsp.cmd = MBOX_CMD_NAK;
|
|
} else {
|
|
rsp.cmd = MBOX_CMD_ACK;
|
|
}
|
|
|
|
rsp.data = msg->data;
|
|
break;
|
|
|
|
case MBOX_CMD_START_HSIC_IDLE:
|
|
case MBOX_CMD_STOP_HSIC_IDLE:
|
|
if (msg->cmd == MBOX_CMD_STOP_HSIC_IDLE)
|
|
idle = false;
|
|
else
|
|
idle = true;
|
|
|
|
mask = extract_field(msg->data, 1 + soc->ports.hsic.offset,
|
|
soc->ports.hsic.count);
|
|
|
|
for_each_set_bit(port, &mask, 32) {
|
|
err = tegra_xusb_padctl_hsic_set_idle(padctl, port,
|
|
idle);
|
|
if (err < 0)
|
|
break;
|
|
}
|
|
|
|
if (err < 0) {
|
|
dev_err(dev, "failed to set HSIC#%u %s: %d\n", port,
|
|
idle ? "idle" : "busy", err);
|
|
rsp.cmd = MBOX_CMD_NAK;
|
|
} else {
|
|
rsp.cmd = MBOX_CMD_ACK;
|
|
}
|
|
|
|
rsp.data = msg->data;
|
|
break;
|
|
|
|
case MBOX_CMD_DISABLE_SS_LFPS_DETECTION:
|
|
case MBOX_CMD_ENABLE_SS_LFPS_DETECTION:
|
|
if (msg->cmd == MBOX_CMD_DISABLE_SS_LFPS_DETECTION)
|
|
enable = false;
|
|
else
|
|
enable = true;
|
|
|
|
mask = extract_field(msg->data, 1 + soc->ports.usb3.offset,
|
|
soc->ports.usb3.count);
|
|
|
|
for_each_set_bit(port, &mask, soc->ports.usb3.count) {
|
|
err = tegra_xusb_padctl_usb3_set_lfps_detect(padctl,
|
|
port,
|
|
enable);
|
|
if (err < 0)
|
|
break;
|
|
|
|
/*
|
|
* wait 500us for LFPS detector to be disabled before
|
|
* sending ACK
|
|
*/
|
|
if (!enable)
|
|
usleep_range(500, 1000);
|
|
}
|
|
|
|
if (err < 0) {
|
|
dev_err(dev,
|
|
"failed to %s LFPS detection on USB3#%u: %d\n",
|
|
enable ? "enable" : "disable", port, err);
|
|
rsp.cmd = MBOX_CMD_NAK;
|
|
} else {
|
|
rsp.cmd = MBOX_CMD_ACK;
|
|
}
|
|
|
|
rsp.data = msg->data;
|
|
break;
|
|
|
|
default:
|
|
dev_warn(dev, "unknown message: %#x\n", msg->cmd);
|
|
break;
|
|
}
|
|
|
|
if (rsp.cmd) {
|
|
const char *cmd = (rsp.cmd == MBOX_CMD_ACK) ? "ACK" : "NAK";
|
|
|
|
err = tegra_xusb_mbox_send(tegra, &rsp);
|
|
if (err < 0)
|
|
dev_err(dev, "failed to send %s: %d\n", cmd, err);
|
|
}
|
|
}
|
|
|
|
static irqreturn_t tegra_xusb_mbox_thread(int irq, void *data)
|
|
{
|
|
struct tegra_xusb *tegra = data;
|
|
struct tegra_xusb_mbox_msg msg;
|
|
u32 value;
|
|
|
|
mutex_lock(&tegra->lock);
|
|
|
|
if (pm_runtime_suspended(tegra->dev) || tegra->suspended)
|
|
goto out;
|
|
|
|
value = fpci_readl(tegra, tegra->soc->mbox.data_out);
|
|
tegra_xusb_mbox_unpack(&msg, value);
|
|
|
|
value = fpci_readl(tegra, tegra->soc->mbox.cmd);
|
|
value &= ~MBOX_DEST_SMI;
|
|
fpci_writel(tegra, value, tegra->soc->mbox.cmd);
|
|
|
|
/* clear mailbox owner if no ACK/NAK is required */
|
|
if (!tegra_xusb_mbox_cmd_requires_ack(msg.cmd))
|
|
fpci_writel(tegra, MBOX_OWNER_NONE, tegra->soc->mbox.owner);
|
|
|
|
tegra_xusb_mbox_handle(tegra, &msg);
|
|
|
|
out:
|
|
mutex_unlock(&tegra->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void tegra_xusb_config(struct tegra_xusb *tegra)
|
|
{
|
|
u32 regs = tegra->hcd->rsrc_start;
|
|
u32 value;
|
|
|
|
if (tegra->soc->has_ipfs) {
|
|
value = ipfs_readl(tegra, IPFS_XUSB_HOST_CONFIGURATION_0);
|
|
value |= IPFS_EN_FPCI;
|
|
ipfs_writel(tegra, value, IPFS_XUSB_HOST_CONFIGURATION_0);
|
|
|
|
usleep_range(10, 20);
|
|
}
|
|
|
|
/* Program BAR0 space */
|
|
value = fpci_readl(tegra, XUSB_CFG_4);
|
|
value &= ~(XUSB_BASE_ADDR_MASK << XUSB_BASE_ADDR_SHIFT);
|
|
value |= regs & (XUSB_BASE_ADDR_MASK << XUSB_BASE_ADDR_SHIFT);
|
|
fpci_writel(tegra, value, XUSB_CFG_4);
|
|
|
|
usleep_range(100, 200);
|
|
|
|
/* Enable bus master */
|
|
value = fpci_readl(tegra, XUSB_CFG_1);
|
|
value |= XUSB_IO_SPACE_EN | XUSB_MEM_SPACE_EN | XUSB_BUS_MASTER_EN;
|
|
fpci_writel(tegra, value, XUSB_CFG_1);
|
|
|
|
if (tegra->soc->has_ipfs) {
|
|
/* Enable interrupt assertion */
|
|
value = ipfs_readl(tegra, IPFS_XUSB_HOST_INTR_MASK_0);
|
|
value |= IPFS_IP_INT_MASK;
|
|
ipfs_writel(tegra, value, IPFS_XUSB_HOST_INTR_MASK_0);
|
|
|
|
/* Set hysteresis */
|
|
ipfs_writel(tegra, 0x80, IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0);
|
|
}
|
|
}
|
|
|
|
static int tegra_xusb_clk_enable(struct tegra_xusb *tegra)
|
|
{
|
|
int err;
|
|
|
|
err = clk_prepare_enable(tegra->pll_e);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = clk_prepare_enable(tegra->host_clk);
|
|
if (err < 0)
|
|
goto disable_plle;
|
|
|
|
err = clk_prepare_enable(tegra->ss_clk);
|
|
if (err < 0)
|
|
goto disable_host;
|
|
|
|
err = clk_prepare_enable(tegra->falcon_clk);
|
|
if (err < 0)
|
|
goto disable_ss;
|
|
|
|
err = clk_prepare_enable(tegra->fs_src_clk);
|
|
if (err < 0)
|
|
goto disable_falc;
|
|
|
|
err = clk_prepare_enable(tegra->hs_src_clk);
|
|
if (err < 0)
|
|
goto disable_fs_src;
|
|
|
|
if (tegra->soc->scale_ss_clock) {
|
|
err = tegra_xusb_set_ss_clk(tegra, TEGRA_XHCI_SS_HIGH_SPEED);
|
|
if (err < 0)
|
|
goto disable_hs_src;
|
|
}
|
|
|
|
return 0;
|
|
|
|
disable_hs_src:
|
|
clk_disable_unprepare(tegra->hs_src_clk);
|
|
disable_fs_src:
|
|
clk_disable_unprepare(tegra->fs_src_clk);
|
|
disable_falc:
|
|
clk_disable_unprepare(tegra->falcon_clk);
|
|
disable_ss:
|
|
clk_disable_unprepare(tegra->ss_clk);
|
|
disable_host:
|
|
clk_disable_unprepare(tegra->host_clk);
|
|
disable_plle:
|
|
clk_disable_unprepare(tegra->pll_e);
|
|
return err;
|
|
}
|
|
|
|
static void tegra_xusb_clk_disable(struct tegra_xusb *tegra)
|
|
{
|
|
clk_disable_unprepare(tegra->pll_e);
|
|
clk_disable_unprepare(tegra->host_clk);
|
|
clk_disable_unprepare(tegra->ss_clk);
|
|
clk_disable_unprepare(tegra->falcon_clk);
|
|
clk_disable_unprepare(tegra->fs_src_clk);
|
|
clk_disable_unprepare(tegra->hs_src_clk);
|
|
}
|
|
|
|
static int tegra_xusb_phy_enable(struct tegra_xusb *tegra)
|
|
{
|
|
unsigned int i;
|
|
int err;
|
|
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
err = phy_init(tegra->phys[i]);
|
|
if (err)
|
|
goto disable_phy;
|
|
|
|
err = phy_power_on(tegra->phys[i]);
|
|
if (err) {
|
|
phy_exit(tegra->phys[i]);
|
|
goto disable_phy;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
disable_phy:
|
|
while (i--) {
|
|
phy_power_off(tegra->phys[i]);
|
|
phy_exit(tegra->phys[i]);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void tegra_xusb_phy_disable(struct tegra_xusb *tegra)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
phy_power_off(tegra->phys[i]);
|
|
phy_exit(tegra->phys[i]);
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int tegra_xusb_init_context(struct tegra_xusb *tegra)
|
|
{
|
|
const struct tegra_xusb_context_soc *soc = tegra->soc->context;
|
|
|
|
tegra->context.ipfs = devm_kcalloc(tegra->dev, soc->ipfs.num_offsets,
|
|
sizeof(u32), GFP_KERNEL);
|
|
if (!tegra->context.ipfs)
|
|
return -ENOMEM;
|
|
|
|
tegra->context.fpci = devm_kcalloc(tegra->dev, soc->fpci.num_offsets,
|
|
sizeof(u32), GFP_KERNEL);
|
|
if (!tegra->context.fpci)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
static inline int tegra_xusb_init_context(struct tegra_xusb *tegra)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int tegra_xusb_request_firmware(struct tegra_xusb *tegra)
|
|
{
|
|
struct tegra_xusb_fw_header *header;
|
|
const struct firmware *fw;
|
|
int err;
|
|
|
|
err = request_firmware(&fw, tegra->soc->firmware, tegra->dev);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "failed to request firmware: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/* Load Falcon controller with its firmware. */
|
|
header = (struct tegra_xusb_fw_header *)fw->data;
|
|
tegra->fw.size = le32_to_cpu(header->fwimg_len);
|
|
|
|
tegra->fw.virt = dma_alloc_coherent(tegra->dev, tegra->fw.size,
|
|
&tegra->fw.phys, GFP_KERNEL);
|
|
if (!tegra->fw.virt) {
|
|
dev_err(tegra->dev, "failed to allocate memory for firmware\n");
|
|
release_firmware(fw);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
header = (struct tegra_xusb_fw_header *)tegra->fw.virt;
|
|
memcpy(tegra->fw.virt, fw->data, tegra->fw.size);
|
|
release_firmware(fw);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_xusb_load_firmware(struct tegra_xusb *tegra)
|
|
{
|
|
unsigned int code_tag_blocks, code_size_blocks, code_blocks;
|
|
struct xhci_cap_regs __iomem *cap = tegra->regs;
|
|
struct tegra_xusb_fw_header *header;
|
|
struct device *dev = tegra->dev;
|
|
struct xhci_op_regs __iomem *op;
|
|
unsigned long timeout;
|
|
time64_t timestamp;
|
|
u64 address;
|
|
u32 value;
|
|
int err;
|
|
|
|
header = (struct tegra_xusb_fw_header *)tegra->fw.virt;
|
|
op = tegra->regs + HC_LENGTH(readl(&cap->hc_capbase));
|
|
|
|
if (csb_readl(tegra, XUSB_CSB_MP_ILOAD_BASE_LO) != 0) {
|
|
dev_info(dev, "Firmware already loaded, Falcon state %#x\n",
|
|
csb_readl(tegra, XUSB_FALC_CPUCTL));
|
|
return 0;
|
|
}
|
|
|
|
/* Program the size of DFI into ILOAD_ATTR. */
|
|
csb_writel(tegra, tegra->fw.size, XUSB_CSB_MP_ILOAD_ATTR);
|
|
|
|
/*
|
|
* Boot code of the firmware reads the ILOAD_BASE registers
|
|
* to get to the start of the DFI in system memory.
|
|
*/
|
|
address = tegra->fw.phys + sizeof(*header);
|
|
csb_writel(tegra, address >> 32, XUSB_CSB_MP_ILOAD_BASE_HI);
|
|
csb_writel(tegra, address, XUSB_CSB_MP_ILOAD_BASE_LO);
|
|
|
|
/* Set BOOTPATH to 1 in APMAP. */
|
|
csb_writel(tegra, APMAP_BOOTPATH, XUSB_CSB_MP_APMAP);
|
|
|
|
/* Invalidate L2IMEM. */
|
|
csb_writel(tegra, L2IMEMOP_INVALIDATE_ALL, XUSB_CSB_MP_L2IMEMOP_TRIG);
|
|
|
|
/*
|
|
* Initiate fetch of bootcode from system memory into L2IMEM.
|
|
* Program bootcode location and size in system memory.
|
|
*/
|
|
code_tag_blocks = DIV_ROUND_UP(le32_to_cpu(header->boot_codetag),
|
|
IMEM_BLOCK_SIZE);
|
|
code_size_blocks = DIV_ROUND_UP(le32_to_cpu(header->boot_codesize),
|
|
IMEM_BLOCK_SIZE);
|
|
code_blocks = code_tag_blocks + code_size_blocks;
|
|
|
|
value = ((code_tag_blocks & L2IMEMOP_SIZE_SRC_OFFSET_MASK) <<
|
|
L2IMEMOP_SIZE_SRC_OFFSET_SHIFT) |
|
|
((code_size_blocks & L2IMEMOP_SIZE_SRC_COUNT_MASK) <<
|
|
L2IMEMOP_SIZE_SRC_COUNT_SHIFT);
|
|
csb_writel(tegra, value, XUSB_CSB_MP_L2IMEMOP_SIZE);
|
|
|
|
/* Trigger L2IMEM load operation. */
|
|
csb_writel(tegra, L2IMEMOP_LOAD_LOCKED_RESULT,
|
|
XUSB_CSB_MP_L2IMEMOP_TRIG);
|
|
|
|
/* Setup Falcon auto-fill. */
|
|
csb_writel(tegra, code_size_blocks, XUSB_FALC_IMFILLCTL);
|
|
|
|
value = ((code_tag_blocks & IMFILLRNG1_TAG_MASK) <<
|
|
IMFILLRNG1_TAG_LO_SHIFT) |
|
|
((code_blocks & IMFILLRNG1_TAG_MASK) <<
|
|
IMFILLRNG1_TAG_HI_SHIFT);
|
|
csb_writel(tegra, value, XUSB_FALC_IMFILLRNG1);
|
|
|
|
csb_writel(tegra, 0, XUSB_FALC_DMACTL);
|
|
|
|
/* wait for RESULT_VLD to get set */
|
|
#define tegra_csb_readl(offset) csb_readl(tegra, offset)
|
|
err = readx_poll_timeout(tegra_csb_readl,
|
|
XUSB_CSB_MEMPOOL_L2IMEMOP_RESULT, value,
|
|
value & L2IMEMOP_RESULT_VLD, 100, 10000);
|
|
if (err < 0) {
|
|
dev_err(dev, "DMA controller not ready %#010x\n", value);
|
|
return err;
|
|
}
|
|
#undef tegra_csb_readl
|
|
|
|
csb_writel(tegra, le32_to_cpu(header->boot_codetag),
|
|
XUSB_FALC_BOOTVEC);
|
|
|
|
/* Boot Falcon CPU and wait for USBSTS_CNR to get cleared. */
|
|
csb_writel(tegra, CPUCTL_STARTCPU, XUSB_FALC_CPUCTL);
|
|
|
|
timeout = jiffies + msecs_to_jiffies(200);
|
|
|
|
do {
|
|
value = readl(&op->status);
|
|
if ((value & STS_CNR) == 0)
|
|
break;
|
|
|
|
usleep_range(1000, 2000);
|
|
} while (time_is_after_jiffies(timeout));
|
|
|
|
value = readl(&op->status);
|
|
if (value & STS_CNR) {
|
|
value = csb_readl(tegra, XUSB_FALC_CPUCTL);
|
|
dev_err(dev, "XHCI controller not read: %#010x\n", value);
|
|
return -EIO;
|
|
}
|
|
|
|
timestamp = le32_to_cpu(header->fwimg_created_time);
|
|
|
|
dev_info(dev, "Firmware timestamp: %ptTs UTC\n", ×tamp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tegra_xusb_powerdomain_remove(struct device *dev,
|
|
struct tegra_xusb *tegra)
|
|
{
|
|
if (!tegra->use_genpd)
|
|
return;
|
|
|
|
if (!IS_ERR_OR_NULL(tegra->genpd_dev_ss))
|
|
dev_pm_domain_detach(tegra->genpd_dev_ss, true);
|
|
if (!IS_ERR_OR_NULL(tegra->genpd_dev_host))
|
|
dev_pm_domain_detach(tegra->genpd_dev_host, true);
|
|
}
|
|
|
|
static int tegra_xusb_powerdomain_init(struct device *dev,
|
|
struct tegra_xusb *tegra)
|
|
{
|
|
int err;
|
|
|
|
tegra->genpd_dev_host = dev_pm_domain_attach_by_name(dev, "xusb_host");
|
|
if (IS_ERR(tegra->genpd_dev_host)) {
|
|
err = PTR_ERR(tegra->genpd_dev_host);
|
|
dev_err(dev, "failed to get host pm-domain: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
tegra->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "xusb_ss");
|
|
if (IS_ERR(tegra->genpd_dev_ss)) {
|
|
err = PTR_ERR(tegra->genpd_dev_ss);
|
|
dev_err(dev, "failed to get superspeed pm-domain: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
tegra->use_genpd = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_xusb_unpowergate_partitions(struct tegra_xusb *tegra)
|
|
{
|
|
struct device *dev = tegra->dev;
|
|
int rc;
|
|
|
|
if (tegra->use_genpd) {
|
|
rc = pm_runtime_get_sync(tegra->genpd_dev_ss);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to enable XUSB SS partition\n");
|
|
return rc;
|
|
}
|
|
|
|
rc = pm_runtime_get_sync(tegra->genpd_dev_host);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to enable XUSB Host partition\n");
|
|
pm_runtime_put_sync(tegra->genpd_dev_ss);
|
|
return rc;
|
|
}
|
|
} else {
|
|
rc = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBA,
|
|
tegra->ss_clk,
|
|
tegra->ss_rst);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to enable XUSB SS partition\n");
|
|
return rc;
|
|
}
|
|
|
|
rc = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBC,
|
|
tegra->host_clk,
|
|
tegra->host_rst);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to enable XUSB Host partition\n");
|
|
tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_xusb_powergate_partitions(struct tegra_xusb *tegra)
|
|
{
|
|
struct device *dev = tegra->dev;
|
|
int rc;
|
|
|
|
if (tegra->use_genpd) {
|
|
rc = pm_runtime_put_sync(tegra->genpd_dev_host);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to disable XUSB Host partition\n");
|
|
return rc;
|
|
}
|
|
|
|
rc = pm_runtime_put_sync(tegra->genpd_dev_ss);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to disable XUSB SS partition\n");
|
|
pm_runtime_get_sync(tegra->genpd_dev_host);
|
|
return rc;
|
|
}
|
|
} else {
|
|
rc = tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to disable XUSB Host partition\n");
|
|
return rc;
|
|
}
|
|
|
|
rc = tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
|
|
if (rc < 0) {
|
|
dev_err(dev, "failed to disable XUSB SS partition\n");
|
|
tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBC,
|
|
tegra->host_clk,
|
|
tegra->host_rst);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __tegra_xusb_enable_firmware_messages(struct tegra_xusb *tegra)
|
|
{
|
|
struct tegra_xusb_mbox_msg msg;
|
|
int err;
|
|
|
|
/* Enable firmware messages from controller. */
|
|
msg.cmd = MBOX_CMD_MSG_ENABLED;
|
|
msg.data = 0;
|
|
|
|
err = tegra_xusb_mbox_send(tegra, &msg);
|
|
if (err < 0)
|
|
dev_err(tegra->dev, "failed to enable messages: %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static irqreturn_t tegra_xusb_padctl_irq(int irq, void *data)
|
|
{
|
|
struct tegra_xusb *tegra = data;
|
|
|
|
mutex_lock(&tegra->lock);
|
|
|
|
if (tegra->suspended) {
|
|
mutex_unlock(&tegra->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
pm_runtime_resume(tegra->dev);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int tegra_xusb_enable_firmware_messages(struct tegra_xusb *tegra)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&tegra->lock);
|
|
err = __tegra_xusb_enable_firmware_messages(tegra);
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void tegra_xhci_set_port_power(struct tegra_xusb *tegra, bool main,
|
|
bool set)
|
|
{
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
struct usb_hcd *hcd = main ? xhci->main_hcd : xhci->shared_hcd;
|
|
unsigned int wait = (!main && !set) ? 1000 : 10;
|
|
u16 typeReq = set ? SetPortFeature : ClearPortFeature;
|
|
u16 wIndex = main ? tegra->otg_usb2_port + 1 : tegra->otg_usb3_port + 1;
|
|
u32 status;
|
|
u32 stat_power = main ? USB_PORT_STAT_POWER : USB_SS_PORT_STAT_POWER;
|
|
u32 status_val = set ? stat_power : 0;
|
|
|
|
dev_dbg(tegra->dev, "%s():%s %s port power\n", __func__,
|
|
set ? "set" : "clear", main ? "HS" : "SS");
|
|
|
|
hcd->driver->hub_control(hcd, typeReq, USB_PORT_FEAT_POWER, wIndex,
|
|
NULL, 0);
|
|
|
|
do {
|
|
tegra_xhci_hc_driver.hub_control(hcd, GetPortStatus, 0, wIndex,
|
|
(char *) &status, sizeof(status));
|
|
if (status_val == (status & stat_power))
|
|
break;
|
|
|
|
if (!main && !set)
|
|
usleep_range(600, 700);
|
|
else
|
|
usleep_range(10, 20);
|
|
} while (--wait > 0);
|
|
|
|
if (status_val != (status & stat_power))
|
|
dev_info(tegra->dev, "failed to %s %s PP %d\n",
|
|
set ? "set" : "clear",
|
|
main ? "HS" : "SS", status);
|
|
}
|
|
|
|
static struct phy *tegra_xusb_get_phy(struct tegra_xusb *tegra, char *name,
|
|
int port)
|
|
{
|
|
unsigned int i, phy_count = 0;
|
|
|
|
for (i = 0; i < tegra->soc->num_types; i++) {
|
|
if (!strncmp(tegra->soc->phy_types[i].name, name,
|
|
strlen(name)))
|
|
return tegra->phys[phy_count+port];
|
|
|
|
phy_count += tegra->soc->phy_types[i].num;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void tegra_xhci_id_work(struct work_struct *work)
|
|
{
|
|
struct tegra_xusb *tegra = container_of(work, struct tegra_xusb,
|
|
id_work);
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
struct tegra_xusb_mbox_msg msg;
|
|
struct phy *phy = tegra_xusb_get_phy(tegra, "usb2",
|
|
tegra->otg_usb2_port);
|
|
u32 status;
|
|
int ret;
|
|
|
|
dev_dbg(tegra->dev, "host mode %s\n", tegra->host_mode ? "on" : "off");
|
|
|
|
mutex_lock(&tegra->lock);
|
|
|
|
if (tegra->host_mode)
|
|
phy_set_mode_ext(phy, PHY_MODE_USB_OTG, USB_ROLE_HOST);
|
|
else
|
|
phy_set_mode_ext(phy, PHY_MODE_USB_OTG, USB_ROLE_NONE);
|
|
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
if (tegra->host_mode) {
|
|
/* switch to host mode */
|
|
if (tegra->otg_usb3_port >= 0) {
|
|
if (tegra->soc->otg_reset_sspi) {
|
|
/* set PP=0 */
|
|
tegra_xhci_hc_driver.hub_control(
|
|
xhci->shared_hcd, GetPortStatus,
|
|
0, tegra->otg_usb3_port+1,
|
|
(char *) &status, sizeof(status));
|
|
if (status & USB_SS_PORT_STAT_POWER)
|
|
tegra_xhci_set_port_power(tegra, false,
|
|
false);
|
|
|
|
/* reset OTG port SSPI */
|
|
msg.cmd = MBOX_CMD_RESET_SSPI;
|
|
msg.data = tegra->otg_usb3_port+1;
|
|
|
|
ret = tegra_xusb_mbox_send(tegra, &msg);
|
|
if (ret < 0) {
|
|
dev_info(tegra->dev,
|
|
"failed to RESET_SSPI %d\n",
|
|
ret);
|
|
}
|
|
}
|
|
|
|
tegra_xhci_set_port_power(tegra, false, true);
|
|
}
|
|
|
|
tegra_xhci_set_port_power(tegra, true, true);
|
|
|
|
} else {
|
|
if (tegra->otg_usb3_port >= 0)
|
|
tegra_xhci_set_port_power(tegra, false, false);
|
|
|
|
tegra_xhci_set_port_power(tegra, true, false);
|
|
}
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_PM) || IS_ENABLED(CONFIG_PM_SLEEP)
|
|
static bool is_usb2_otg_phy(struct tegra_xusb *tegra, unsigned int index)
|
|
{
|
|
return (tegra->usbphy[index] != NULL);
|
|
}
|
|
|
|
static bool is_usb3_otg_phy(struct tegra_xusb *tegra, unsigned int index)
|
|
{
|
|
struct tegra_xusb_padctl *padctl = tegra->padctl;
|
|
unsigned int i;
|
|
int port;
|
|
|
|
for (i = 0; i < tegra->num_usb_phys; i++) {
|
|
if (is_usb2_otg_phy(tegra, i)) {
|
|
port = tegra_xusb_padctl_get_usb3_companion(padctl, i);
|
|
if ((port >= 0) && (index == (unsigned int)port))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool is_host_mode_phy(struct tegra_xusb *tegra, unsigned int phy_type, unsigned int index)
|
|
{
|
|
if (strcmp(tegra->soc->phy_types[phy_type].name, "hsic") == 0)
|
|
return true;
|
|
|
|
if (strcmp(tegra->soc->phy_types[phy_type].name, "usb2") == 0) {
|
|
if (is_usb2_otg_phy(tegra, index))
|
|
return ((index == tegra->otg_usb2_port) && tegra->host_mode);
|
|
else
|
|
return true;
|
|
}
|
|
|
|
if (strcmp(tegra->soc->phy_types[phy_type].name, "usb3") == 0) {
|
|
if (is_usb3_otg_phy(tegra, index))
|
|
return ((index == tegra->otg_usb3_port) && tegra->host_mode);
|
|
else
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
static int tegra_xusb_get_usb2_port(struct tegra_xusb *tegra,
|
|
struct usb_phy *usbphy)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < tegra->num_usb_phys; i++) {
|
|
if (tegra->usbphy[i] && usbphy == tegra->usbphy[i])
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int tegra_xhci_id_notify(struct notifier_block *nb,
|
|
unsigned long action, void *data)
|
|
{
|
|
struct tegra_xusb *tegra = container_of(nb, struct tegra_xusb,
|
|
id_nb);
|
|
struct usb_phy *usbphy = (struct usb_phy *)data;
|
|
|
|
dev_dbg(tegra->dev, "%s(): action is %d", __func__, usbphy->last_event);
|
|
|
|
if ((tegra->host_mode && usbphy->last_event == USB_EVENT_ID) ||
|
|
(!tegra->host_mode && usbphy->last_event != USB_EVENT_ID)) {
|
|
dev_dbg(tegra->dev, "Same role(%d) received. Ignore",
|
|
tegra->host_mode);
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
tegra->otg_usb2_port = tegra_xusb_get_usb2_port(tegra, usbphy);
|
|
tegra->otg_usb3_port = tegra_xusb_padctl_get_usb3_companion(
|
|
tegra->padctl,
|
|
tegra->otg_usb2_port);
|
|
|
|
tegra->host_mode = (usbphy->last_event == USB_EVENT_ID) ? true : false;
|
|
|
|
schedule_work(&tegra->id_work);
|
|
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
static int tegra_xusb_init_usb_phy(struct tegra_xusb *tegra)
|
|
{
|
|
unsigned int i;
|
|
|
|
tegra->usbphy = devm_kcalloc(tegra->dev, tegra->num_usb_phys,
|
|
sizeof(*tegra->usbphy), GFP_KERNEL);
|
|
if (!tegra->usbphy)
|
|
return -ENOMEM;
|
|
|
|
INIT_WORK(&tegra->id_work, tegra_xhci_id_work);
|
|
tegra->id_nb.notifier_call = tegra_xhci_id_notify;
|
|
tegra->otg_usb2_port = -EINVAL;
|
|
tegra->otg_usb3_port = -EINVAL;
|
|
|
|
for (i = 0; i < tegra->num_usb_phys; i++) {
|
|
struct phy *phy = tegra_xusb_get_phy(tegra, "usb2", i);
|
|
|
|
if (!phy)
|
|
continue;
|
|
|
|
tegra->usbphy[i] = devm_usb_get_phy_by_node(tegra->dev,
|
|
phy->dev.of_node,
|
|
&tegra->id_nb);
|
|
if (!IS_ERR(tegra->usbphy[i])) {
|
|
dev_dbg(tegra->dev, "usbphy-%d registered", i);
|
|
otg_set_host(tegra->usbphy[i]->otg, &tegra->hcd->self);
|
|
} else {
|
|
/*
|
|
* usb-phy is optional, continue if its not available.
|
|
*/
|
|
tegra->usbphy[i] = NULL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tegra_xusb_deinit_usb_phy(struct tegra_xusb *tegra)
|
|
{
|
|
unsigned int i;
|
|
|
|
cancel_work_sync(&tegra->id_work);
|
|
|
|
for (i = 0; i < tegra->num_usb_phys; i++)
|
|
if (tegra->usbphy[i])
|
|
otg_set_host(tegra->usbphy[i]->otg, NULL);
|
|
}
|
|
|
|
static int tegra_xusb_probe(struct platform_device *pdev)
|
|
{
|
|
struct tegra_xusb *tegra;
|
|
struct device_node *np;
|
|
struct resource *regs;
|
|
struct xhci_hcd *xhci;
|
|
unsigned int i, j, k;
|
|
struct phy *phy;
|
|
int err;
|
|
|
|
BUILD_BUG_ON(sizeof(struct tegra_xusb_fw_header) != 256);
|
|
|
|
tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
|
|
if (!tegra)
|
|
return -ENOMEM;
|
|
|
|
tegra->soc = of_device_get_match_data(&pdev->dev);
|
|
mutex_init(&tegra->lock);
|
|
tegra->dev = &pdev->dev;
|
|
|
|
err = tegra_xusb_init_context(tegra);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
tegra->regs = devm_platform_get_and_ioremap_resource(pdev, 0, ®s);
|
|
if (IS_ERR(tegra->regs))
|
|
return PTR_ERR(tegra->regs);
|
|
|
|
tegra->fpci_base = devm_platform_ioremap_resource(pdev, 1);
|
|
if (IS_ERR(tegra->fpci_base))
|
|
return PTR_ERR(tegra->fpci_base);
|
|
|
|
if (tegra->soc->has_ipfs) {
|
|
tegra->ipfs_base = devm_platform_ioremap_resource(pdev, 2);
|
|
if (IS_ERR(tegra->ipfs_base))
|
|
return PTR_ERR(tegra->ipfs_base);
|
|
}
|
|
|
|
tegra->xhci_irq = platform_get_irq(pdev, 0);
|
|
if (tegra->xhci_irq < 0)
|
|
return tegra->xhci_irq;
|
|
|
|
tegra->mbox_irq = platform_get_irq(pdev, 1);
|
|
if (tegra->mbox_irq < 0)
|
|
return tegra->mbox_irq;
|
|
|
|
tegra->padctl = tegra_xusb_padctl_get(&pdev->dev);
|
|
if (IS_ERR(tegra->padctl))
|
|
return PTR_ERR(tegra->padctl);
|
|
|
|
np = of_parse_phandle(pdev->dev.of_node, "nvidia,xusb-padctl", 0);
|
|
if (!np) {
|
|
err = -ENODEV;
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->padctl_irq = of_irq_get(np, 0);
|
|
if (tegra->padctl_irq <= 0) {
|
|
err = (tegra->padctl_irq == 0) ? -ENODEV : tegra->padctl_irq;
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->host_clk = devm_clk_get(&pdev->dev, "xusb_host");
|
|
if (IS_ERR(tegra->host_clk)) {
|
|
err = PTR_ERR(tegra->host_clk);
|
|
dev_err(&pdev->dev, "failed to get xusb_host: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->falcon_clk = devm_clk_get(&pdev->dev, "xusb_falcon_src");
|
|
if (IS_ERR(tegra->falcon_clk)) {
|
|
err = PTR_ERR(tegra->falcon_clk);
|
|
dev_err(&pdev->dev, "failed to get xusb_falcon_src: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->ss_clk = devm_clk_get(&pdev->dev, "xusb_ss");
|
|
if (IS_ERR(tegra->ss_clk)) {
|
|
err = PTR_ERR(tegra->ss_clk);
|
|
dev_err(&pdev->dev, "failed to get xusb_ss: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->ss_src_clk = devm_clk_get(&pdev->dev, "xusb_ss_src");
|
|
if (IS_ERR(tegra->ss_src_clk)) {
|
|
err = PTR_ERR(tegra->ss_src_clk);
|
|
dev_err(&pdev->dev, "failed to get xusb_ss_src: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->hs_src_clk = devm_clk_get(&pdev->dev, "xusb_hs_src");
|
|
if (IS_ERR(tegra->hs_src_clk)) {
|
|
err = PTR_ERR(tegra->hs_src_clk);
|
|
dev_err(&pdev->dev, "failed to get xusb_hs_src: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->fs_src_clk = devm_clk_get(&pdev->dev, "xusb_fs_src");
|
|
if (IS_ERR(tegra->fs_src_clk)) {
|
|
err = PTR_ERR(tegra->fs_src_clk);
|
|
dev_err(&pdev->dev, "failed to get xusb_fs_src: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->pll_u_480m = devm_clk_get(&pdev->dev, "pll_u_480m");
|
|
if (IS_ERR(tegra->pll_u_480m)) {
|
|
err = PTR_ERR(tegra->pll_u_480m);
|
|
dev_err(&pdev->dev, "failed to get pll_u_480m: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->clk_m = devm_clk_get(&pdev->dev, "clk_m");
|
|
if (IS_ERR(tegra->clk_m)) {
|
|
err = PTR_ERR(tegra->clk_m);
|
|
dev_err(&pdev->dev, "failed to get clk_m: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->pll_e = devm_clk_get(&pdev->dev, "pll_e");
|
|
if (IS_ERR(tegra->pll_e)) {
|
|
err = PTR_ERR(tegra->pll_e);
|
|
dev_err(&pdev->dev, "failed to get pll_e: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) {
|
|
tegra->host_rst = devm_reset_control_get(&pdev->dev,
|
|
"xusb_host");
|
|
if (IS_ERR(tegra->host_rst)) {
|
|
err = PTR_ERR(tegra->host_rst);
|
|
dev_err(&pdev->dev,
|
|
"failed to get xusb_host reset: %d\n", err);
|
|
goto put_padctl;
|
|
}
|
|
|
|
tegra->ss_rst = devm_reset_control_get(&pdev->dev, "xusb_ss");
|
|
if (IS_ERR(tegra->ss_rst)) {
|
|
err = PTR_ERR(tegra->ss_rst);
|
|
dev_err(&pdev->dev, "failed to get xusb_ss reset: %d\n",
|
|
err);
|
|
goto put_padctl;
|
|
}
|
|
} else {
|
|
err = tegra_xusb_powerdomain_init(&pdev->dev, tegra);
|
|
if (err)
|
|
goto put_powerdomains;
|
|
}
|
|
|
|
tegra->supplies = devm_kcalloc(&pdev->dev, tegra->soc->num_supplies,
|
|
sizeof(*tegra->supplies), GFP_KERNEL);
|
|
if (!tegra->supplies) {
|
|
err = -ENOMEM;
|
|
goto put_powerdomains;
|
|
}
|
|
|
|
regulator_bulk_set_supply_names(tegra->supplies,
|
|
tegra->soc->supply_names,
|
|
tegra->soc->num_supplies);
|
|
|
|
err = devm_regulator_bulk_get(&pdev->dev, tegra->soc->num_supplies,
|
|
tegra->supplies);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "failed to get regulators: %d\n", err);
|
|
goto put_powerdomains;
|
|
}
|
|
|
|
for (i = 0; i < tegra->soc->num_types; i++) {
|
|
if (!strncmp(tegra->soc->phy_types[i].name, "usb2", 4))
|
|
tegra->num_usb_phys = tegra->soc->phy_types[i].num;
|
|
tegra->num_phys += tegra->soc->phy_types[i].num;
|
|
}
|
|
|
|
tegra->phys = devm_kcalloc(&pdev->dev, tegra->num_phys,
|
|
sizeof(*tegra->phys), GFP_KERNEL);
|
|
if (!tegra->phys) {
|
|
err = -ENOMEM;
|
|
goto put_powerdomains;
|
|
}
|
|
|
|
for (i = 0, k = 0; i < tegra->soc->num_types; i++) {
|
|
char prop[8];
|
|
|
|
for (j = 0; j < tegra->soc->phy_types[i].num; j++) {
|
|
snprintf(prop, sizeof(prop), "%s-%d",
|
|
tegra->soc->phy_types[i].name, j);
|
|
|
|
phy = devm_phy_optional_get(&pdev->dev, prop);
|
|
if (IS_ERR(phy)) {
|
|
dev_err(&pdev->dev,
|
|
"failed to get PHY %s: %ld\n", prop,
|
|
PTR_ERR(phy));
|
|
err = PTR_ERR(phy);
|
|
goto put_powerdomains;
|
|
}
|
|
|
|
tegra->phys[k++] = phy;
|
|
}
|
|
}
|
|
|
|
tegra->hcd = usb_create_hcd(&tegra_xhci_hc_driver, &pdev->dev,
|
|
dev_name(&pdev->dev));
|
|
if (!tegra->hcd) {
|
|
err = -ENOMEM;
|
|
goto put_powerdomains;
|
|
}
|
|
|
|
tegra->hcd->skip_phy_initialization = 1;
|
|
tegra->hcd->regs = tegra->regs;
|
|
tegra->hcd->rsrc_start = regs->start;
|
|
tegra->hcd->rsrc_len = resource_size(regs);
|
|
|
|
/*
|
|
* This must happen after usb_create_hcd(), because usb_create_hcd()
|
|
* will overwrite the drvdata of the device with the hcd it creates.
|
|
*/
|
|
platform_set_drvdata(pdev, tegra);
|
|
|
|
err = tegra_xusb_clk_enable(tegra);
|
|
if (err) {
|
|
dev_err(tegra->dev, "failed to enable clocks: %d\n", err);
|
|
goto put_hcd;
|
|
}
|
|
|
|
err = regulator_bulk_enable(tegra->soc->num_supplies, tegra->supplies);
|
|
if (err) {
|
|
dev_err(tegra->dev, "failed to enable regulators: %d\n", err);
|
|
goto disable_clk;
|
|
}
|
|
|
|
err = tegra_xusb_phy_enable(tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to enable PHYs: %d\n", err);
|
|
goto disable_regulator;
|
|
}
|
|
|
|
/*
|
|
* The XUSB Falcon microcontroller can only address 40 bits, so set
|
|
* the DMA mask accordingly.
|
|
*/
|
|
err = dma_set_mask_and_coherent(tegra->dev, DMA_BIT_MASK(40));
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
|
|
goto disable_phy;
|
|
}
|
|
|
|
err = tegra_xusb_request_firmware(tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to request firmware: %d\n", err);
|
|
goto disable_phy;
|
|
}
|
|
|
|
err = tegra_xusb_unpowergate_partitions(tegra);
|
|
if (err)
|
|
goto free_firmware;
|
|
|
|
tegra_xusb_config(tegra);
|
|
|
|
err = tegra_xusb_load_firmware(tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to load firmware: %d\n", err);
|
|
goto powergate;
|
|
}
|
|
|
|
err = usb_add_hcd(tegra->hcd, tegra->xhci_irq, IRQF_SHARED);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to add USB HCD: %d\n", err);
|
|
goto powergate;
|
|
}
|
|
|
|
device_wakeup_enable(tegra->hcd->self.controller);
|
|
|
|
xhci = hcd_to_xhci(tegra->hcd);
|
|
|
|
xhci->shared_hcd = usb_create_shared_hcd(&tegra_xhci_hc_driver,
|
|
&pdev->dev,
|
|
dev_name(&pdev->dev),
|
|
tegra->hcd);
|
|
if (!xhci->shared_hcd) {
|
|
dev_err(&pdev->dev, "failed to create shared HCD\n");
|
|
err = -ENOMEM;
|
|
goto remove_usb2;
|
|
}
|
|
|
|
err = usb_add_hcd(xhci->shared_hcd, tegra->xhci_irq, IRQF_SHARED);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to add shared HCD: %d\n", err);
|
|
goto put_usb3;
|
|
}
|
|
|
|
err = devm_request_threaded_irq(&pdev->dev, tegra->mbox_irq,
|
|
tegra_xusb_mbox_irq,
|
|
tegra_xusb_mbox_thread, 0,
|
|
dev_name(&pdev->dev), tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to request IRQ: %d\n", err);
|
|
goto remove_usb3;
|
|
}
|
|
|
|
err = devm_request_threaded_irq(&pdev->dev, tegra->padctl_irq, NULL, tegra_xusb_padctl_irq,
|
|
IRQF_ONESHOT, dev_name(&pdev->dev), tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to request padctl IRQ: %d\n", err);
|
|
goto remove_usb3;
|
|
}
|
|
|
|
err = tegra_xusb_enable_firmware_messages(tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to enable messages: %d\n", err);
|
|
goto remove_usb3;
|
|
}
|
|
|
|
err = tegra_xusb_init_usb_phy(tegra);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to init USB PHY: %d\n", err);
|
|
goto remove_usb3;
|
|
}
|
|
|
|
/* Enable wake for both USB 2.0 and USB 3.0 roothubs */
|
|
device_init_wakeup(&tegra->hcd->self.root_hub->dev, true);
|
|
device_init_wakeup(&xhci->shared_hcd->self.root_hub->dev, true);
|
|
device_init_wakeup(tegra->dev, true);
|
|
|
|
pm_runtime_use_autosuspend(tegra->dev);
|
|
pm_runtime_set_autosuspend_delay(tegra->dev, 2000);
|
|
pm_runtime_mark_last_busy(tegra->dev);
|
|
pm_runtime_set_active(tegra->dev);
|
|
pm_runtime_enable(tegra->dev);
|
|
|
|
return 0;
|
|
|
|
remove_usb3:
|
|
usb_remove_hcd(xhci->shared_hcd);
|
|
put_usb3:
|
|
usb_put_hcd(xhci->shared_hcd);
|
|
remove_usb2:
|
|
usb_remove_hcd(tegra->hcd);
|
|
powergate:
|
|
tegra_xusb_powergate_partitions(tegra);
|
|
free_firmware:
|
|
dma_free_coherent(&pdev->dev, tegra->fw.size, tegra->fw.virt,
|
|
tegra->fw.phys);
|
|
disable_phy:
|
|
tegra_xusb_phy_disable(tegra);
|
|
disable_regulator:
|
|
regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
|
|
disable_clk:
|
|
tegra_xusb_clk_disable(tegra);
|
|
put_hcd:
|
|
usb_put_hcd(tegra->hcd);
|
|
put_powerdomains:
|
|
tegra_xusb_powerdomain_remove(&pdev->dev, tegra);
|
|
put_padctl:
|
|
of_node_put(np);
|
|
tegra_xusb_padctl_put(tegra->padctl);
|
|
return err;
|
|
}
|
|
|
|
static int tegra_xusb_remove(struct platform_device *pdev)
|
|
{
|
|
struct tegra_xusb *tegra = platform_get_drvdata(pdev);
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
|
|
tegra_xusb_deinit_usb_phy(tegra);
|
|
|
|
pm_runtime_get_sync(&pdev->dev);
|
|
usb_remove_hcd(xhci->shared_hcd);
|
|
usb_put_hcd(xhci->shared_hcd);
|
|
xhci->shared_hcd = NULL;
|
|
usb_remove_hcd(tegra->hcd);
|
|
usb_put_hcd(tegra->hcd);
|
|
|
|
dma_free_coherent(&pdev->dev, tegra->fw.size, tegra->fw.virt,
|
|
tegra->fw.phys);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
pm_runtime_put(&pdev->dev);
|
|
|
|
tegra_xusb_powergate_partitions(tegra);
|
|
|
|
tegra_xusb_powerdomain_remove(&pdev->dev, tegra);
|
|
|
|
tegra_xusb_phy_disable(tegra);
|
|
tegra_xusb_clk_disable(tegra);
|
|
regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
|
|
tegra_xusb_padctl_put(tegra->padctl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool xhci_hub_ports_suspended(struct xhci_hub *hub)
|
|
{
|
|
struct device *dev = hub->hcd->self.controller;
|
|
bool status = true;
|
|
unsigned int i;
|
|
u32 value;
|
|
|
|
for (i = 0; i < hub->num_ports; i++) {
|
|
value = readl(hub->ports[i]->addr);
|
|
if ((value & PORT_PE) == 0)
|
|
continue;
|
|
|
|
if ((value & PORT_PLS_MASK) != XDEV_U3) {
|
|
dev_info(dev, "%u-%u isn't suspended: %#010x\n",
|
|
hub->hcd->self.busnum, i + 1, value);
|
|
status = false;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static int tegra_xusb_check_ports(struct tegra_xusb *tegra)
|
|
{
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
struct xhci_bus_state *bus_state = &xhci->usb2_rhub.bus_state;
|
|
unsigned long flags;
|
|
int err = 0;
|
|
|
|
if (bus_state->bus_suspended) {
|
|
/* xusb_hub_suspend() has just directed one or more USB2 port(s)
|
|
* to U3 state, it takes 3ms to enter U3.
|
|
*/
|
|
usleep_range(3000, 4000);
|
|
}
|
|
|
|
spin_lock_irqsave(&xhci->lock, flags);
|
|
|
|
if (!xhci_hub_ports_suspended(&xhci->usb2_rhub) ||
|
|
!xhci_hub_ports_suspended(&xhci->usb3_rhub))
|
|
err = -EBUSY;
|
|
|
|
spin_unlock_irqrestore(&xhci->lock, flags);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void tegra_xusb_save_context(struct tegra_xusb *tegra)
|
|
{
|
|
const struct tegra_xusb_context_soc *soc = tegra->soc->context;
|
|
struct tegra_xusb_context *ctx = &tegra->context;
|
|
unsigned int i;
|
|
|
|
if (soc->ipfs.num_offsets > 0) {
|
|
for (i = 0; i < soc->ipfs.num_offsets; i++)
|
|
ctx->ipfs[i] = ipfs_readl(tegra, soc->ipfs.offsets[i]);
|
|
}
|
|
|
|
if (soc->fpci.num_offsets > 0) {
|
|
for (i = 0; i < soc->fpci.num_offsets; i++)
|
|
ctx->fpci[i] = fpci_readl(tegra, soc->fpci.offsets[i]);
|
|
}
|
|
}
|
|
|
|
static void tegra_xusb_restore_context(struct tegra_xusb *tegra)
|
|
{
|
|
const struct tegra_xusb_context_soc *soc = tegra->soc->context;
|
|
struct tegra_xusb_context *ctx = &tegra->context;
|
|
unsigned int i;
|
|
|
|
if (soc->fpci.num_offsets > 0) {
|
|
for (i = 0; i < soc->fpci.num_offsets; i++)
|
|
fpci_writel(tegra, ctx->fpci[i], soc->fpci.offsets[i]);
|
|
}
|
|
|
|
if (soc->ipfs.num_offsets > 0) {
|
|
for (i = 0; i < soc->ipfs.num_offsets; i++)
|
|
ipfs_writel(tegra, ctx->ipfs[i], soc->ipfs.offsets[i]);
|
|
}
|
|
}
|
|
|
|
static enum usb_device_speed tegra_xhci_portsc_to_speed(struct tegra_xusb *tegra, u32 portsc)
|
|
{
|
|
if (DEV_LOWSPEED(portsc))
|
|
return USB_SPEED_LOW;
|
|
|
|
if (DEV_HIGHSPEED(portsc))
|
|
return USB_SPEED_HIGH;
|
|
|
|
if (DEV_FULLSPEED(portsc))
|
|
return USB_SPEED_FULL;
|
|
|
|
if (DEV_SUPERSPEED_ANY(portsc))
|
|
return USB_SPEED_SUPER;
|
|
|
|
return USB_SPEED_UNKNOWN;
|
|
}
|
|
|
|
static void tegra_xhci_enable_phy_sleepwalk_wake(struct tegra_xusb *tegra)
|
|
{
|
|
struct tegra_xusb_padctl *padctl = tegra->padctl;
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
enum usb_device_speed speed;
|
|
struct phy *phy;
|
|
unsigned int index, offset;
|
|
unsigned int i, j, k;
|
|
struct xhci_hub *rhub;
|
|
u32 portsc;
|
|
|
|
for (i = 0, k = 0; i < tegra->soc->num_types; i++) {
|
|
if (strcmp(tegra->soc->phy_types[i].name, "usb3") == 0)
|
|
rhub = &xhci->usb3_rhub;
|
|
else
|
|
rhub = &xhci->usb2_rhub;
|
|
|
|
if (strcmp(tegra->soc->phy_types[i].name, "hsic") == 0)
|
|
offset = tegra->soc->ports.usb2.count;
|
|
else
|
|
offset = 0;
|
|
|
|
for (j = 0; j < tegra->soc->phy_types[i].num; j++) {
|
|
phy = tegra->phys[k++];
|
|
|
|
if (!phy)
|
|
continue;
|
|
|
|
index = j + offset;
|
|
|
|
if (index >= rhub->num_ports)
|
|
continue;
|
|
|
|
if (!is_host_mode_phy(tegra, i, j))
|
|
continue;
|
|
|
|
portsc = readl(rhub->ports[index]->addr);
|
|
speed = tegra_xhci_portsc_to_speed(tegra, portsc);
|
|
tegra_xusb_padctl_enable_phy_sleepwalk(padctl, phy, speed);
|
|
tegra_xusb_padctl_enable_phy_wake(padctl, phy);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void tegra_xhci_disable_phy_wake(struct tegra_xusb *tegra)
|
|
{
|
|
struct tegra_xusb_padctl *padctl = tegra->padctl;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
if (!tegra->phys[i])
|
|
continue;
|
|
|
|
tegra_xusb_padctl_disable_phy_wake(padctl, tegra->phys[i]);
|
|
}
|
|
}
|
|
|
|
static void tegra_xhci_disable_phy_sleepwalk(struct tegra_xusb *tegra)
|
|
{
|
|
struct tegra_xusb_padctl *padctl = tegra->padctl;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
if (!tegra->phys[i])
|
|
continue;
|
|
|
|
tegra_xusb_padctl_disable_phy_sleepwalk(padctl, tegra->phys[i]);
|
|
}
|
|
}
|
|
|
|
static int tegra_xusb_enter_elpg(struct tegra_xusb *tegra, bool runtime)
|
|
{
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
struct device *dev = tegra->dev;
|
|
bool wakeup = runtime ? true : device_may_wakeup(dev);
|
|
unsigned int i;
|
|
int err;
|
|
u32 usbcmd;
|
|
|
|
dev_dbg(dev, "entering ELPG\n");
|
|
|
|
usbcmd = readl(&xhci->op_regs->command);
|
|
usbcmd &= ~CMD_EIE;
|
|
writel(usbcmd, &xhci->op_regs->command);
|
|
|
|
err = tegra_xusb_check_ports(tegra);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "not all ports suspended: %d\n", err);
|
|
goto out;
|
|
}
|
|
|
|
err = xhci_suspend(xhci, wakeup);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "failed to suspend XHCI: %d\n", err);
|
|
goto out;
|
|
}
|
|
|
|
tegra_xusb_save_context(tegra);
|
|
|
|
if (wakeup)
|
|
tegra_xhci_enable_phy_sleepwalk_wake(tegra);
|
|
|
|
tegra_xusb_powergate_partitions(tegra);
|
|
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
if (!tegra->phys[i])
|
|
continue;
|
|
|
|
phy_power_off(tegra->phys[i]);
|
|
if (!wakeup)
|
|
phy_exit(tegra->phys[i]);
|
|
}
|
|
|
|
tegra_xusb_clk_disable(tegra);
|
|
|
|
out:
|
|
if (!err)
|
|
dev_dbg(tegra->dev, "entering ELPG done\n");
|
|
else {
|
|
usbcmd = readl(&xhci->op_regs->command);
|
|
usbcmd |= CMD_EIE;
|
|
writel(usbcmd, &xhci->op_regs->command);
|
|
|
|
dev_dbg(tegra->dev, "entering ELPG failed\n");
|
|
pm_runtime_mark_last_busy(tegra->dev);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int tegra_xusb_exit_elpg(struct tegra_xusb *tegra, bool runtime)
|
|
{
|
|
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
|
|
struct device *dev = tegra->dev;
|
|
bool wakeup = runtime ? true : device_may_wakeup(dev);
|
|
unsigned int i;
|
|
u32 usbcmd;
|
|
int err;
|
|
|
|
dev_dbg(dev, "exiting ELPG\n");
|
|
pm_runtime_mark_last_busy(tegra->dev);
|
|
|
|
err = tegra_xusb_clk_enable(tegra);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "failed to enable clocks: %d\n", err);
|
|
goto out;
|
|
}
|
|
|
|
err = tegra_xusb_unpowergate_partitions(tegra);
|
|
if (err)
|
|
goto disable_clks;
|
|
|
|
if (wakeup)
|
|
tegra_xhci_disable_phy_wake(tegra);
|
|
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
if (!tegra->phys[i])
|
|
continue;
|
|
|
|
if (!wakeup)
|
|
phy_init(tegra->phys[i]);
|
|
|
|
phy_power_on(tegra->phys[i]);
|
|
}
|
|
|
|
tegra_xusb_config(tegra);
|
|
tegra_xusb_restore_context(tegra);
|
|
|
|
err = tegra_xusb_load_firmware(tegra);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "failed to load firmware: %d\n", err);
|
|
goto disable_phy;
|
|
}
|
|
|
|
err = __tegra_xusb_enable_firmware_messages(tegra);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "failed to enable messages: %d\n", err);
|
|
goto disable_phy;
|
|
}
|
|
|
|
if (wakeup)
|
|
tegra_xhci_disable_phy_sleepwalk(tegra);
|
|
|
|
err = xhci_resume(xhci, 0);
|
|
if (err < 0) {
|
|
dev_err(tegra->dev, "failed to resume XHCI: %d\n", err);
|
|
goto disable_phy;
|
|
}
|
|
|
|
usbcmd = readl(&xhci->op_regs->command);
|
|
usbcmd |= CMD_EIE;
|
|
writel(usbcmd, &xhci->op_regs->command);
|
|
|
|
goto out;
|
|
|
|
disable_phy:
|
|
for (i = 0; i < tegra->num_phys; i++) {
|
|
if (!tegra->phys[i])
|
|
continue;
|
|
|
|
phy_power_off(tegra->phys[i]);
|
|
if (!wakeup)
|
|
phy_exit(tegra->phys[i]);
|
|
}
|
|
tegra_xusb_powergate_partitions(tegra);
|
|
disable_clks:
|
|
tegra_xusb_clk_disable(tegra);
|
|
out:
|
|
if (!err)
|
|
dev_dbg(dev, "exiting ELPG done\n");
|
|
else
|
|
dev_dbg(dev, "exiting ELPG failed\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
static __maybe_unused int tegra_xusb_suspend(struct device *dev)
|
|
{
|
|
struct tegra_xusb *tegra = dev_get_drvdata(dev);
|
|
int err;
|
|
|
|
synchronize_irq(tegra->mbox_irq);
|
|
|
|
mutex_lock(&tegra->lock);
|
|
|
|
if (pm_runtime_suspended(dev)) {
|
|
err = tegra_xusb_exit_elpg(tegra, true);
|
|
if (err < 0)
|
|
goto out;
|
|
}
|
|
|
|
err = tegra_xusb_enter_elpg(tegra, false);
|
|
if (err < 0) {
|
|
if (pm_runtime_suspended(dev)) {
|
|
pm_runtime_disable(dev);
|
|
pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (!err) {
|
|
tegra->suspended = true;
|
|
pm_runtime_disable(dev);
|
|
|
|
if (device_may_wakeup(dev)) {
|
|
if (enable_irq_wake(tegra->padctl_irq))
|
|
dev_err(dev, "failed to enable padctl wakes\n");
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static __maybe_unused int tegra_xusb_resume(struct device *dev)
|
|
{
|
|
struct tegra_xusb *tegra = dev_get_drvdata(dev);
|
|
int err;
|
|
|
|
mutex_lock(&tegra->lock);
|
|
|
|
if (!tegra->suspended) {
|
|
mutex_unlock(&tegra->lock);
|
|
return 0;
|
|
}
|
|
|
|
err = tegra_xusb_exit_elpg(tegra, false);
|
|
if (err < 0) {
|
|
mutex_unlock(&tegra->lock);
|
|
return err;
|
|
}
|
|
|
|
if (device_may_wakeup(dev)) {
|
|
if (disable_irq_wake(tegra->padctl_irq))
|
|
dev_err(dev, "failed to disable padctl wakes\n");
|
|
}
|
|
tegra->suspended = false;
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __maybe_unused int tegra_xusb_runtime_suspend(struct device *dev)
|
|
{
|
|
struct tegra_xusb *tegra = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
synchronize_irq(tegra->mbox_irq);
|
|
mutex_lock(&tegra->lock);
|
|
ret = tegra_xusb_enter_elpg(tegra, true);
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __maybe_unused int tegra_xusb_runtime_resume(struct device *dev)
|
|
{
|
|
struct tegra_xusb *tegra = dev_get_drvdata(dev);
|
|
int err;
|
|
|
|
mutex_lock(&tegra->lock);
|
|
err = tegra_xusb_exit_elpg(tegra, true);
|
|
mutex_unlock(&tegra->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static const struct dev_pm_ops tegra_xusb_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(tegra_xusb_runtime_suspend,
|
|
tegra_xusb_runtime_resume, NULL)
|
|
SET_SYSTEM_SLEEP_PM_OPS(tegra_xusb_suspend, tegra_xusb_resume)
|
|
};
|
|
|
|
static const char * const tegra124_supply_names[] = {
|
|
"avddio-pex",
|
|
"dvddio-pex",
|
|
"avdd-usb",
|
|
"hvdd-usb-ss",
|
|
};
|
|
|
|
static const struct tegra_xusb_phy_type tegra124_phy_types[] = {
|
|
{ .name = "usb3", .num = 2, },
|
|
{ .name = "usb2", .num = 3, },
|
|
{ .name = "hsic", .num = 2, },
|
|
};
|
|
|
|
static const unsigned int tegra124_xusb_context_ipfs[] = {
|
|
IPFS_XUSB_HOST_MSI_BAR_SZ_0,
|
|
IPFS_XUSB_HOST_MSI_AXI_BAR_ST_0,
|
|
IPFS_XUSB_HOST_MSI_FPCI_BAR_ST_0,
|
|
IPFS_XUSB_HOST_MSI_VEC0_0,
|
|
IPFS_XUSB_HOST_MSI_EN_VEC0_0,
|
|
IPFS_XUSB_HOST_FPCI_ERROR_MASKS_0,
|
|
IPFS_XUSB_HOST_INTR_MASK_0,
|
|
IPFS_XUSB_HOST_INTR_ENABLE_0,
|
|
IPFS_XUSB_HOST_UFPCI_CONFIG_0,
|
|
IPFS_XUSB_HOST_CLKGATE_HYSTERESIS_0,
|
|
IPFS_XUSB_HOST_MCCIF_FIFOCTRL_0,
|
|
};
|
|
|
|
static const unsigned int tegra124_xusb_context_fpci[] = {
|
|
XUSB_CFG_ARU_CONTEXT_HS_PLS,
|
|
XUSB_CFG_ARU_CONTEXT_FS_PLS,
|
|
XUSB_CFG_ARU_CONTEXT_HSFS_SPEED,
|
|
XUSB_CFG_ARU_CONTEXT_HSFS_PP,
|
|
XUSB_CFG_ARU_CONTEXT,
|
|
XUSB_CFG_AXI_CFG,
|
|
XUSB_CFG_24,
|
|
XUSB_CFG_16,
|
|
};
|
|
|
|
static const struct tegra_xusb_context_soc tegra124_xusb_context = {
|
|
.ipfs = {
|
|
.num_offsets = ARRAY_SIZE(tegra124_xusb_context_ipfs),
|
|
.offsets = tegra124_xusb_context_ipfs,
|
|
},
|
|
.fpci = {
|
|
.num_offsets = ARRAY_SIZE(tegra124_xusb_context_fpci),
|
|
.offsets = tegra124_xusb_context_fpci,
|
|
},
|
|
};
|
|
|
|
static const struct tegra_xusb_soc tegra124_soc = {
|
|
.firmware = "nvidia/tegra124/xusb.bin",
|
|
.supply_names = tegra124_supply_names,
|
|
.num_supplies = ARRAY_SIZE(tegra124_supply_names),
|
|
.phy_types = tegra124_phy_types,
|
|
.num_types = ARRAY_SIZE(tegra124_phy_types),
|
|
.context = &tegra124_xusb_context,
|
|
.ports = {
|
|
.usb2 = { .offset = 4, .count = 4, },
|
|
.hsic = { .offset = 6, .count = 2, },
|
|
.usb3 = { .offset = 0, .count = 2, },
|
|
},
|
|
.scale_ss_clock = true,
|
|
.has_ipfs = true,
|
|
.otg_reset_sspi = false,
|
|
.mbox = {
|
|
.cmd = 0xe4,
|
|
.data_in = 0xe8,
|
|
.data_out = 0xec,
|
|
.owner = 0xf0,
|
|
},
|
|
};
|
|
MODULE_FIRMWARE("nvidia/tegra124/xusb.bin");
|
|
|
|
static const char * const tegra210_supply_names[] = {
|
|
"dvddio-pex",
|
|
"hvddio-pex",
|
|
"avdd-usb",
|
|
};
|
|
|
|
static const struct tegra_xusb_phy_type tegra210_phy_types[] = {
|
|
{ .name = "usb3", .num = 4, },
|
|
{ .name = "usb2", .num = 4, },
|
|
{ .name = "hsic", .num = 1, },
|
|
};
|
|
|
|
static const struct tegra_xusb_soc tegra210_soc = {
|
|
.firmware = "nvidia/tegra210/xusb.bin",
|
|
.supply_names = tegra210_supply_names,
|
|
.num_supplies = ARRAY_SIZE(tegra210_supply_names),
|
|
.phy_types = tegra210_phy_types,
|
|
.num_types = ARRAY_SIZE(tegra210_phy_types),
|
|
.context = &tegra124_xusb_context,
|
|
.ports = {
|
|
.usb2 = { .offset = 4, .count = 4, },
|
|
.hsic = { .offset = 8, .count = 1, },
|
|
.usb3 = { .offset = 0, .count = 4, },
|
|
},
|
|
.scale_ss_clock = false,
|
|
.has_ipfs = true,
|
|
.otg_reset_sspi = true,
|
|
.mbox = {
|
|
.cmd = 0xe4,
|
|
.data_in = 0xe8,
|
|
.data_out = 0xec,
|
|
.owner = 0xf0,
|
|
},
|
|
};
|
|
MODULE_FIRMWARE("nvidia/tegra210/xusb.bin");
|
|
|
|
static const char * const tegra186_supply_names[] = {
|
|
};
|
|
MODULE_FIRMWARE("nvidia/tegra186/xusb.bin");
|
|
|
|
static const struct tegra_xusb_phy_type tegra186_phy_types[] = {
|
|
{ .name = "usb3", .num = 3, },
|
|
{ .name = "usb2", .num = 3, },
|
|
{ .name = "hsic", .num = 1, },
|
|
};
|
|
|
|
static const struct tegra_xusb_context_soc tegra186_xusb_context = {
|
|
.fpci = {
|
|
.num_offsets = ARRAY_SIZE(tegra124_xusb_context_fpci),
|
|
.offsets = tegra124_xusb_context_fpci,
|
|
},
|
|
};
|
|
|
|
static const struct tegra_xusb_soc tegra186_soc = {
|
|
.firmware = "nvidia/tegra186/xusb.bin",
|
|
.supply_names = tegra186_supply_names,
|
|
.num_supplies = ARRAY_SIZE(tegra186_supply_names),
|
|
.phy_types = tegra186_phy_types,
|
|
.num_types = ARRAY_SIZE(tegra186_phy_types),
|
|
.context = &tegra186_xusb_context,
|
|
.ports = {
|
|
.usb3 = { .offset = 0, .count = 3, },
|
|
.usb2 = { .offset = 3, .count = 3, },
|
|
.hsic = { .offset = 6, .count = 1, },
|
|
},
|
|
.scale_ss_clock = false,
|
|
.has_ipfs = false,
|
|
.otg_reset_sspi = false,
|
|
.mbox = {
|
|
.cmd = 0xe4,
|
|
.data_in = 0xe8,
|
|
.data_out = 0xec,
|
|
.owner = 0xf0,
|
|
},
|
|
.lpm_support = true,
|
|
};
|
|
|
|
static const char * const tegra194_supply_names[] = {
|
|
};
|
|
|
|
static const struct tegra_xusb_phy_type tegra194_phy_types[] = {
|
|
{ .name = "usb3", .num = 4, },
|
|
{ .name = "usb2", .num = 4, },
|
|
};
|
|
|
|
static const struct tegra_xusb_soc tegra194_soc = {
|
|
.firmware = "nvidia/tegra194/xusb.bin",
|
|
.supply_names = tegra194_supply_names,
|
|
.num_supplies = ARRAY_SIZE(tegra194_supply_names),
|
|
.phy_types = tegra194_phy_types,
|
|
.num_types = ARRAY_SIZE(tegra194_phy_types),
|
|
.context = &tegra186_xusb_context,
|
|
.ports = {
|
|
.usb3 = { .offset = 0, .count = 4, },
|
|
.usb2 = { .offset = 4, .count = 4, },
|
|
},
|
|
.scale_ss_clock = false,
|
|
.has_ipfs = false,
|
|
.otg_reset_sspi = false,
|
|
.mbox = {
|
|
.cmd = 0x68,
|
|
.data_in = 0x6c,
|
|
.data_out = 0x70,
|
|
.owner = 0x74,
|
|
},
|
|
.lpm_support = true,
|
|
};
|
|
MODULE_FIRMWARE("nvidia/tegra194/xusb.bin");
|
|
|
|
static const struct of_device_id tegra_xusb_of_match[] = {
|
|
{ .compatible = "nvidia,tegra124-xusb", .data = &tegra124_soc },
|
|
{ .compatible = "nvidia,tegra210-xusb", .data = &tegra210_soc },
|
|
{ .compatible = "nvidia,tegra186-xusb", .data = &tegra186_soc },
|
|
{ .compatible = "nvidia,tegra194-xusb", .data = &tegra194_soc },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tegra_xusb_of_match);
|
|
|
|
static struct platform_driver tegra_xusb_driver = {
|
|
.probe = tegra_xusb_probe,
|
|
.remove = tegra_xusb_remove,
|
|
.driver = {
|
|
.name = "tegra-xusb",
|
|
.pm = &tegra_xusb_pm_ops,
|
|
.of_match_table = tegra_xusb_of_match,
|
|
},
|
|
};
|
|
|
|
static void tegra_xhci_quirks(struct device *dev, struct xhci_hcd *xhci)
|
|
{
|
|
struct tegra_xusb *tegra = dev_get_drvdata(dev);
|
|
|
|
xhci->quirks |= XHCI_PLAT;
|
|
if (tegra && tegra->soc->lpm_support)
|
|
xhci->quirks |= XHCI_LPM_SUPPORT;
|
|
}
|
|
|
|
static int tegra_xhci_setup(struct usb_hcd *hcd)
|
|
{
|
|
return xhci_gen_setup(hcd, tegra_xhci_quirks);
|
|
}
|
|
|
|
static const struct xhci_driver_overrides tegra_xhci_overrides __initconst = {
|
|
.reset = tegra_xhci_setup,
|
|
};
|
|
|
|
static int __init tegra_xusb_init(void)
|
|
{
|
|
xhci_init_driver(&tegra_xhci_hc_driver, &tegra_xhci_overrides);
|
|
|
|
return platform_driver_register(&tegra_xusb_driver);
|
|
}
|
|
module_init(tegra_xusb_init);
|
|
|
|
static void __exit tegra_xusb_exit(void)
|
|
{
|
|
platform_driver_unregister(&tegra_xusb_driver);
|
|
}
|
|
module_exit(tegra_xusb_exit);
|
|
|
|
MODULE_AUTHOR("Andrew Bresticker <abrestic@chromium.org>");
|
|
MODULE_DESCRIPTION("NVIDIA Tegra XUSB xHCI host-controller driver");
|
|
MODULE_LICENSE("GPL v2");
|