linux/drivers/i2c/busses/i2c-xgene-slimpro.c
Thomas Gleixner 1ccea77e2a treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not see http www gnu org licenses

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details [based]
  [from] [clk] [highbank] [c] you should have received a copy of the
  gnu general public license along with this program if not see http
  www gnu org licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 355 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:45 +02:00

615 lines
16 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* X-Gene SLIMpro I2C Driver
*
* Copyright (c) 2014, Applied Micro Circuits Corporation
* Author: Feng Kan <fkan@apm.com>
* Author: Hieu Le <hnle@apm.com>
*
* This driver provides support for X-Gene SLIMpro I2C device access
* using the APM X-Gene SLIMpro mailbox driver.
*/
#include <acpi/pcc.h>
#include <linux/acpi.h>
#include <linux/dma-mapping.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/mailbox_client.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/version.h>
#define MAILBOX_OP_TIMEOUT 1000 /* Operation time out in ms */
#define MAILBOX_I2C_INDEX 0
#define SLIMPRO_IIC_BUS 1 /* Use I2C bus 1 only */
#define SMBUS_CMD_LEN 1
#define BYTE_DATA 1
#define WORD_DATA 2
#define BLOCK_DATA 3
#define SLIMPRO_IIC_I2C_PROTOCOL 0
#define SLIMPRO_IIC_SMB_PROTOCOL 1
#define SLIMPRO_IIC_READ 0
#define SLIMPRO_IIC_WRITE 1
#define IIC_SMB_WITHOUT_DATA_LEN 0
#define IIC_SMB_WITH_DATA_LEN 1
#define SLIMPRO_DEBUG_MSG 0
#define SLIMPRO_MSG_TYPE_SHIFT 28
#define SLIMPRO_DBG_SUBTYPE_I2C1READ 4
#define SLIMPRO_DBGMSG_TYPE_SHIFT 24
#define SLIMPRO_DBGMSG_TYPE_MASK 0x0F000000U
#define SLIMPRO_IIC_DEV_SHIFT 23
#define SLIMPRO_IIC_DEV_MASK 0x00800000U
#define SLIMPRO_IIC_DEVID_SHIFT 13
#define SLIMPRO_IIC_DEVID_MASK 0x007FE000U
#define SLIMPRO_IIC_RW_SHIFT 12
#define SLIMPRO_IIC_RW_MASK 0x00001000U
#define SLIMPRO_IIC_PROTO_SHIFT 11
#define SLIMPRO_IIC_PROTO_MASK 0x00000800U
#define SLIMPRO_IIC_ADDRLEN_SHIFT 8
#define SLIMPRO_IIC_ADDRLEN_MASK 0x00000700U
#define SLIMPRO_IIC_DATALEN_SHIFT 0
#define SLIMPRO_IIC_DATALEN_MASK 0x000000FFU
/*
* SLIMpro I2C message encode
*
* dev - Controller number (0-based)
* chip - I2C chip address
* op - SLIMPRO_IIC_READ or SLIMPRO_IIC_WRITE
* proto - SLIMPRO_IIC_SMB_PROTOCOL or SLIMPRO_IIC_I2C_PROTOCOL
* addrlen - Length of the address field
* datalen - Length of the data field
*/
#define SLIMPRO_IIC_ENCODE_MSG(dev, chip, op, proto, addrlen, datalen) \
((SLIMPRO_DEBUG_MSG << SLIMPRO_MSG_TYPE_SHIFT) | \
((SLIMPRO_DBG_SUBTYPE_I2C1READ << SLIMPRO_DBGMSG_TYPE_SHIFT) & \
SLIMPRO_DBGMSG_TYPE_MASK) | \
((dev << SLIMPRO_IIC_DEV_SHIFT) & SLIMPRO_IIC_DEV_MASK) | \
((chip << SLIMPRO_IIC_DEVID_SHIFT) & SLIMPRO_IIC_DEVID_MASK) | \
((op << SLIMPRO_IIC_RW_SHIFT) & SLIMPRO_IIC_RW_MASK) | \
((proto << SLIMPRO_IIC_PROTO_SHIFT) & SLIMPRO_IIC_PROTO_MASK) | \
((addrlen << SLIMPRO_IIC_ADDRLEN_SHIFT) & SLIMPRO_IIC_ADDRLEN_MASK) | \
((datalen << SLIMPRO_IIC_DATALEN_SHIFT) & SLIMPRO_IIC_DATALEN_MASK))
#define SLIMPRO_MSG_TYPE(v) (((v) & 0xF0000000) >> 28)
/*
* Encode for upper address for block data
*/
#define SLIMPRO_IIC_ENCODE_FLAG_BUFADDR 0x80000000
#define SLIMPRO_IIC_ENCODE_FLAG_WITH_DATA_LEN(a) ((u32) (((a) << 30) \
& 0x40000000))
#define SLIMPRO_IIC_ENCODE_UPPER_BUFADDR(a) ((u32) (((a) >> 12) \
& 0x3FF00000))
#define SLIMPRO_IIC_ENCODE_ADDR(a) ((a) & 0x000FFFFF)
#define SLIMPRO_IIC_MSG_DWORD_COUNT 3
/* PCC related defines */
#define PCC_SIGNATURE 0x50424300
#define PCC_STS_CMD_COMPLETE BIT(0)
#define PCC_STS_SCI_DOORBELL BIT(1)
#define PCC_STS_ERR BIT(2)
#define PCC_STS_PLAT_NOTIFY BIT(3)
#define PCC_CMD_GENERATE_DB_INT BIT(15)
struct slimpro_i2c_dev {
struct i2c_adapter adapter;
struct device *dev;
struct mbox_chan *mbox_chan;
struct mbox_client mbox_client;
int mbox_idx;
struct completion rd_complete;
u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */
u32 *resp_msg;
phys_addr_t comm_base_addr;
void *pcc_comm_addr;
};
#define to_slimpro_i2c_dev(cl) \
container_of(cl, struct slimpro_i2c_dev, mbox_client)
enum slimpro_i2c_version {
XGENE_SLIMPRO_I2C_V1 = 0,
XGENE_SLIMPRO_I2C_V2 = 1,
};
/*
* This function tests and clears a bitmask then returns its old value
*/
static u16 xgene_word_tst_and_clr(u16 *addr, u16 mask)
{
u16 ret, val;
val = le16_to_cpu(READ_ONCE(*addr));
ret = val & mask;
val &= ~mask;
WRITE_ONCE(*addr, cpu_to_le16(val));
return ret;
}
static void slimpro_i2c_rx_cb(struct mbox_client *cl, void *mssg)
{
struct slimpro_i2c_dev *ctx = to_slimpro_i2c_dev(cl);
/*
* Response message format:
* mssg[0] is the return code of the operation
* mssg[1] is the first data word
* mssg[2] is NOT used
*/
if (ctx->resp_msg)
*ctx->resp_msg = ((u32 *)mssg)[1];
if (ctx->mbox_client.tx_block)
complete(&ctx->rd_complete);
}
static void slimpro_i2c_pcc_rx_cb(struct mbox_client *cl, void *msg)
{
struct slimpro_i2c_dev *ctx = to_slimpro_i2c_dev(cl);
struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr;
/* Check if platform sends interrupt */
if (!xgene_word_tst_and_clr(&generic_comm_base->status,
PCC_STS_SCI_DOORBELL))
return;
if (xgene_word_tst_and_clr(&generic_comm_base->status,
PCC_STS_CMD_COMPLETE)) {
msg = generic_comm_base + 1;
/* Response message msg[1] contains the return value. */
if (ctx->resp_msg)
*ctx->resp_msg = ((u32 *)msg)[1];
complete(&ctx->rd_complete);
}
}
static void slimpro_i2c_pcc_tx_prepare(struct slimpro_i2c_dev *ctx, u32 *msg)
{
struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr;
u32 *ptr = (void *)(generic_comm_base + 1);
u16 status;
int i;
WRITE_ONCE(generic_comm_base->signature,
cpu_to_le32(PCC_SIGNATURE | ctx->mbox_idx));
WRITE_ONCE(generic_comm_base->command,
cpu_to_le16(SLIMPRO_MSG_TYPE(msg[0]) | PCC_CMD_GENERATE_DB_INT));
status = le16_to_cpu(READ_ONCE(generic_comm_base->status));
status &= ~PCC_STS_CMD_COMPLETE;
WRITE_ONCE(generic_comm_base->status, cpu_to_le16(status));
/* Copy the message to the PCC comm space */
for (i = 0; i < SLIMPRO_IIC_MSG_DWORD_COUNT; i++)
WRITE_ONCE(ptr[i], cpu_to_le32(msg[i]));
}
static int start_i2c_msg_xfer(struct slimpro_i2c_dev *ctx)
{
if (ctx->mbox_client.tx_block || !acpi_disabled) {
if (!wait_for_completion_timeout(&ctx->rd_complete,
msecs_to_jiffies(MAILBOX_OP_TIMEOUT)))
return -ETIMEDOUT;
}
/* Check of invalid data or no device */
if (*ctx->resp_msg == 0xffffffff)
return -ENODEV;
return 0;
}
static int slimpro_i2c_send_msg(struct slimpro_i2c_dev *ctx,
u32 *msg,
u32 *data)
{
int rc;
ctx->resp_msg = data;
if (!acpi_disabled) {
reinit_completion(&ctx->rd_complete);
slimpro_i2c_pcc_tx_prepare(ctx, msg);
}
rc = mbox_send_message(ctx->mbox_chan, msg);
if (rc < 0)
goto err;
rc = start_i2c_msg_xfer(ctx);
err:
if (!acpi_disabled)
mbox_chan_txdone(ctx->mbox_chan, 0);
ctx->resp_msg = NULL;
return rc;
}
static int slimpro_i2c_rd(struct slimpro_i2c_dev *ctx, u32 chip,
u32 addr, u32 addrlen, u32 protocol,
u32 readlen, u32 *data)
{
u32 msg[3];
msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip,
SLIMPRO_IIC_READ, protocol, addrlen, readlen);
msg[1] = SLIMPRO_IIC_ENCODE_ADDR(addr);
msg[2] = 0;
return slimpro_i2c_send_msg(ctx, msg, data);
}
static int slimpro_i2c_wr(struct slimpro_i2c_dev *ctx, u32 chip,
u32 addr, u32 addrlen, u32 protocol, u32 writelen,
u32 data)
{
u32 msg[3];
msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip,
SLIMPRO_IIC_WRITE, protocol, addrlen, writelen);
msg[1] = SLIMPRO_IIC_ENCODE_ADDR(addr);
msg[2] = data;
return slimpro_i2c_send_msg(ctx, msg, msg);
}
static int slimpro_i2c_blkrd(struct slimpro_i2c_dev *ctx, u32 chip, u32 addr,
u32 addrlen, u32 protocol, u32 readlen,
u32 with_data_len, void *data)
{
dma_addr_t paddr;
u32 msg[3];
int rc;
paddr = dma_map_single(ctx->dev, ctx->dma_buffer, readlen, DMA_FROM_DEVICE);
if (dma_mapping_error(ctx->dev, paddr)) {
dev_err(&ctx->adapter.dev, "Error in mapping dma buffer %p\n",
ctx->dma_buffer);
return -ENOMEM;
}
msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip, SLIMPRO_IIC_READ,
protocol, addrlen, readlen);
msg[1] = SLIMPRO_IIC_ENCODE_FLAG_BUFADDR |
SLIMPRO_IIC_ENCODE_FLAG_WITH_DATA_LEN(with_data_len) |
SLIMPRO_IIC_ENCODE_UPPER_BUFADDR(paddr) |
SLIMPRO_IIC_ENCODE_ADDR(addr);
msg[2] = (u32)paddr;
rc = slimpro_i2c_send_msg(ctx, msg, msg);
/* Copy to destination */
memcpy(data, ctx->dma_buffer, readlen);
dma_unmap_single(ctx->dev, paddr, readlen, DMA_FROM_DEVICE);
return rc;
}
static int slimpro_i2c_blkwr(struct slimpro_i2c_dev *ctx, u32 chip,
u32 addr, u32 addrlen, u32 protocol, u32 writelen,
void *data)
{
dma_addr_t paddr;
u32 msg[3];
int rc;
memcpy(ctx->dma_buffer, data, writelen);
paddr = dma_map_single(ctx->dev, ctx->dma_buffer, writelen,
DMA_TO_DEVICE);
if (dma_mapping_error(ctx->dev, paddr)) {
dev_err(&ctx->adapter.dev, "Error in mapping dma buffer %p\n",
ctx->dma_buffer);
return -ENOMEM;
}
msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip, SLIMPRO_IIC_WRITE,
protocol, addrlen, writelen);
msg[1] = SLIMPRO_IIC_ENCODE_FLAG_BUFADDR |
SLIMPRO_IIC_ENCODE_UPPER_BUFADDR(paddr) |
SLIMPRO_IIC_ENCODE_ADDR(addr);
msg[2] = (u32)paddr;
if (ctx->mbox_client.tx_block)
reinit_completion(&ctx->rd_complete);
rc = slimpro_i2c_send_msg(ctx, msg, msg);
dma_unmap_single(ctx->dev, paddr, writelen, DMA_TO_DEVICE);
return rc;
}
static int xgene_slimpro_i2c_xfer(struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write,
u8 command, int size,
union i2c_smbus_data *data)
{
struct slimpro_i2c_dev *ctx = i2c_get_adapdata(adap);
int ret = -EOPNOTSUPP;
u32 val;
switch (size) {
case I2C_SMBUS_BYTE:
if (read_write == I2C_SMBUS_READ) {
ret = slimpro_i2c_rd(ctx, addr, 0, 0,
SLIMPRO_IIC_SMB_PROTOCOL,
BYTE_DATA, &val);
data->byte = val;
} else {
ret = slimpro_i2c_wr(ctx, addr, command, SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
0, 0);
}
break;
case I2C_SMBUS_BYTE_DATA:
if (read_write == I2C_SMBUS_READ) {
ret = slimpro_i2c_rd(ctx, addr, command, SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
BYTE_DATA, &val);
data->byte = val;
} else {
val = data->byte;
ret = slimpro_i2c_wr(ctx, addr, command, SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
BYTE_DATA, val);
}
break;
case I2C_SMBUS_WORD_DATA:
if (read_write == I2C_SMBUS_READ) {
ret = slimpro_i2c_rd(ctx, addr, command, SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
WORD_DATA, &val);
data->word = val;
} else {
val = data->word;
ret = slimpro_i2c_wr(ctx, addr, command, SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
WORD_DATA, val);
}
break;
case I2C_SMBUS_BLOCK_DATA:
if (read_write == I2C_SMBUS_READ) {
ret = slimpro_i2c_blkrd(ctx, addr, command,
SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
I2C_SMBUS_BLOCK_MAX + 1,
IIC_SMB_WITH_DATA_LEN,
&data->block[0]);
} else {
ret = slimpro_i2c_blkwr(ctx, addr, command,
SMBUS_CMD_LEN,
SLIMPRO_IIC_SMB_PROTOCOL,
data->block[0] + 1,
&data->block[0]);
}
break;
case I2C_SMBUS_I2C_BLOCK_DATA:
if (read_write == I2C_SMBUS_READ) {
ret = slimpro_i2c_blkrd(ctx, addr,
command,
SMBUS_CMD_LEN,
SLIMPRO_IIC_I2C_PROTOCOL,
I2C_SMBUS_BLOCK_MAX,
IIC_SMB_WITHOUT_DATA_LEN,
&data->block[1]);
} else {
ret = slimpro_i2c_blkwr(ctx, addr, command,
SMBUS_CMD_LEN,
SLIMPRO_IIC_I2C_PROTOCOL,
data->block[0],
&data->block[1]);
}
break;
default:
break;
}
return ret;
}
/*
* Return list of supported functionality.
*/
static u32 xgene_slimpro_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK;
}
static const struct i2c_algorithm xgene_slimpro_i2c_algorithm = {
.smbus_xfer = xgene_slimpro_i2c_xfer,
.functionality = xgene_slimpro_i2c_func,
};
static int xgene_slimpro_i2c_probe(struct platform_device *pdev)
{
struct slimpro_i2c_dev *ctx;
struct i2c_adapter *adapter;
struct mbox_client *cl;
int rc;
ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->dev = &pdev->dev;
platform_set_drvdata(pdev, ctx);
cl = &ctx->mbox_client;
/* Request mailbox channel */
cl->dev = &pdev->dev;
init_completion(&ctx->rd_complete);
cl->tx_tout = MAILBOX_OP_TIMEOUT;
cl->knows_txdone = false;
if (acpi_disabled) {
cl->tx_block = true;
cl->rx_callback = slimpro_i2c_rx_cb;
ctx->mbox_chan = mbox_request_channel(cl, MAILBOX_I2C_INDEX);
if (IS_ERR(ctx->mbox_chan)) {
dev_err(&pdev->dev, "i2c mailbox channel request failed\n");
return PTR_ERR(ctx->mbox_chan);
}
} else {
struct acpi_pcct_hw_reduced *cppc_ss;
const struct acpi_device_id *acpi_id;
int version = XGENE_SLIMPRO_I2C_V1;
acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table,
&pdev->dev);
if (!acpi_id)
return -EINVAL;
version = (int)acpi_id->driver_data;
if (device_property_read_u32(&pdev->dev, "pcc-channel",
&ctx->mbox_idx))
ctx->mbox_idx = MAILBOX_I2C_INDEX;
cl->tx_block = false;
cl->rx_callback = slimpro_i2c_pcc_rx_cb;
ctx->mbox_chan = pcc_mbox_request_channel(cl, ctx->mbox_idx);
if (IS_ERR(ctx->mbox_chan)) {
dev_err(&pdev->dev, "PCC mailbox channel request failed\n");
return PTR_ERR(ctx->mbox_chan);
}
/*
* The PCC mailbox controller driver should
* have parsed the PCCT (global table of all
* PCC channels) and stored pointers to the
* subspace communication region in con_priv.
*/
cppc_ss = ctx->mbox_chan->con_priv;
if (!cppc_ss) {
dev_err(&pdev->dev, "PPC subspace not found\n");
rc = -ENOENT;
goto mbox_err;
}
if (!ctx->mbox_chan->mbox->txdone_irq) {
dev_err(&pdev->dev, "PCC IRQ not supported\n");
rc = -ENOENT;
goto mbox_err;
}
/*
* This is the shared communication region
* for the OS and Platform to communicate over.
*/
ctx->comm_base_addr = cppc_ss->base_address;
if (ctx->comm_base_addr) {
if (version == XGENE_SLIMPRO_I2C_V2)
ctx->pcc_comm_addr = memremap(
ctx->comm_base_addr,
cppc_ss->length,
MEMREMAP_WT);
else
ctx->pcc_comm_addr = memremap(
ctx->comm_base_addr,
cppc_ss->length,
MEMREMAP_WB);
} else {
dev_err(&pdev->dev, "Failed to get PCC comm region\n");
rc = -ENOENT;
goto mbox_err;
}
if (!ctx->pcc_comm_addr) {
dev_err(&pdev->dev,
"Failed to ioremap PCC comm region\n");
rc = -ENOMEM;
goto mbox_err;
}
}
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (rc)
dev_warn(&pdev->dev, "Unable to set dma mask\n");
/* Setup I2C adapter */
adapter = &ctx->adapter;
snprintf(adapter->name, sizeof(adapter->name), "MAILBOX I2C");
adapter->algo = &xgene_slimpro_i2c_algorithm;
adapter->class = I2C_CLASS_HWMON;
adapter->dev.parent = &pdev->dev;
adapter->dev.of_node = pdev->dev.of_node;
ACPI_COMPANION_SET(&adapter->dev, ACPI_COMPANION(&pdev->dev));
i2c_set_adapdata(adapter, ctx);
rc = i2c_add_adapter(adapter);
if (rc)
goto mbox_err;
dev_info(&pdev->dev, "Mailbox I2C Adapter registered\n");
return 0;
mbox_err:
if (acpi_disabled)
mbox_free_channel(ctx->mbox_chan);
else
pcc_mbox_free_channel(ctx->mbox_chan);
return rc;
}
static int xgene_slimpro_i2c_remove(struct platform_device *pdev)
{
struct slimpro_i2c_dev *ctx = platform_get_drvdata(pdev);
i2c_del_adapter(&ctx->adapter);
if (acpi_disabled)
mbox_free_channel(ctx->mbox_chan);
else
pcc_mbox_free_channel(ctx->mbox_chan);
return 0;
}
static const struct of_device_id xgene_slimpro_i2c_dt_ids[] = {
{.compatible = "apm,xgene-slimpro-i2c" },
{},
};
MODULE_DEVICE_TABLE(of, xgene_slimpro_i2c_dt_ids);
#ifdef CONFIG_ACPI
static const struct acpi_device_id xgene_slimpro_i2c_acpi_ids[] = {
{"APMC0D40", XGENE_SLIMPRO_I2C_V1},
{"APMC0D8B", XGENE_SLIMPRO_I2C_V2},
{}
};
MODULE_DEVICE_TABLE(acpi, xgene_slimpro_i2c_acpi_ids);
#endif
static struct platform_driver xgene_slimpro_i2c_driver = {
.probe = xgene_slimpro_i2c_probe,
.remove = xgene_slimpro_i2c_remove,
.driver = {
.name = "xgene-slimpro-i2c",
.of_match_table = of_match_ptr(xgene_slimpro_i2c_dt_ids),
.acpi_match_table = ACPI_PTR(xgene_slimpro_i2c_acpi_ids)
},
};
module_platform_driver(xgene_slimpro_i2c_driver);
MODULE_DESCRIPTION("APM X-Gene SLIMpro I2C driver");
MODULE_AUTHOR("Feng Kan <fkan@apm.com>");
MODULE_AUTHOR("Hieu Le <hnle@apm.com>");
MODULE_LICENSE("GPL");