[linux-2.6-block.git] / drivers / i2c / busses / i2c-tegra-bpmp.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * drivers/i2c/busses/i2c-tegra-bpmp.c
 *
 * Copyright (c) 2016 NVIDIA Corporation.  All rights reserved.
 *
 * Author: Shardar Shariff Md <smohammed@nvidia.com>
 */

#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>

#include <soc/tegra/bpmp-abi.h>
#include <soc/tegra/bpmp.h>

/*
 * Serialized I2C message header size is 6 bytes and includes address, flags
 * and length
 */
#define SERIALI2C_HDR_SIZE 6

struct tegra_bpmp_i2c {
	struct i2c_adapter adapter;
	struct device *dev;

	struct tegra_bpmp *bpmp;
	unsigned int bus;
};

/*
 * Linux flags are translated to BPMP defined I2C flags that are used in BPMP
 * firmware I2C driver to avoid any issues in future if Linux I2C flags are
 * changed.
 */
static int tegra_bpmp_xlate_flags(u16 flags, u16 *out)
{
	if (flags & I2C_M_TEN) {
		*out |= SERIALI2C_TEN;
		flags &= ~I2C_M_TEN;
	}

	if (flags & I2C_M_RD) {
		*out |= SERIALI2C_RD;
		flags &= ~I2C_M_RD;
	}

	if (flags & I2C_M_STOP) {
		*out |= SERIALI2C_STOP;
		flags &= ~I2C_M_STOP;
	}

	if (flags & I2C_M_NOSTART) {
		*out |= SERIALI2C_NOSTART;
		flags &= ~I2C_M_NOSTART;
	}

	if (flags & I2C_M_REV_DIR_ADDR) {
		*out |= SERIALI2C_REV_DIR_ADDR;
		flags &= ~I2C_M_REV_DIR_ADDR;
	}

	if (flags & I2C_M_IGNORE_NAK) {
		*out |= SERIALI2C_IGNORE_NAK;
		flags &= ~I2C_M_IGNORE_NAK;
	}

	if (flags & I2C_M_NO_RD_ACK) {
		*out |= SERIALI2C_NO_RD_ACK;
		flags &= ~I2C_M_NO_RD_ACK;
	}

	if (flags & I2C_M_RECV_LEN) {
		*out |= SERIALI2C_RECV_LEN;
		flags &= ~I2C_M_RECV_LEN;
	}

	return 0;
}

/**
 * The serialized I2C format is simply the following:
 * [addr little-endian][flags little-endian][len little-endian][data if write]
 * [addr little-endian][flags little-endian][len little-endian][data if write]
 *  ...
 *
 * The flags are translated from Linux kernel representation to seriali2c
 * representation. Any undefined flag being set causes an error.
 *
 * The data is there only for writes. Reads have the data transferred in the
 * other direction, and thus data is not present.
 *
 * See deserialize_i2c documentation for the data format in the other direction.
 */
static int tegra_bpmp_serialize_i2c_msg(struct tegra_bpmp_i2c *i2c,
					struct mrq_i2c_request *request,
					struct i2c_msg *msgs,
					unsigned int num)
{
	char *buf = request->xfer.data_buf;
	unsigned int i, j, pos = 0;
	int err;

	for (i = 0; i < num; i++) {
		struct i2c_msg *msg = &msgs[i];
		u16 flags = 0;

		err = tegra_bpmp_xlate_flags(msg->flags, &flags);
		if (err < 0)
			return err;

		buf[pos++] = msg->addr & 0xff;
		buf[pos++] = (msg->addr & 0xff00) >> 8;
		buf[pos++] = flags & 0xff;
		buf[pos++] = (flags & 0xff00) >> 8;
		buf[pos++] = msg->len & 0xff;
		buf[pos++] = (msg->len & 0xff00) >> 8;

		if ((flags & SERIALI2C_RD) == 0) {
			for (j = 0; j < msg->len; j++)
				buf[pos++] = msg->buf[j];
		}
	}

	request->xfer.data_size = pos;

	return 0;
}

/**
 * The data in the BPMP -> CPU direction is composed of sequential blocks for
 * those messages that have I2C_M_RD. So, for example, if you have:
 *
 * - !I2C_M_RD, len == 5, data == a0 01 02 03 04
 * - !I2C_M_RD, len == 1, data == a0
 * - I2C_M_RD, len == 2, data == [uninitialized buffer 1]
 * - !I2C_M_RD, len == 1, data == a2
 * - I2C_M_RD, len == 2, data == [uninitialized buffer 2]
 *
 * ...then the data in the BPMP -> CPU direction would be 4 bytes total, and
 * would contain 2 bytes that will go to uninitialized buffer 1, and 2 bytes
 * that will go to uninitialized buffer 2.
 */
static int tegra_bpmp_i2c_deserialize(struct tegra_bpmp_i2c *i2c,
				      struct mrq_i2c_response *response,
				      struct i2c_msg *msgs,
				      unsigned int num)
{
	size_t size = response->xfer.data_size, len = 0, pos = 0;
	char *buf = response->xfer.data_buf;
	unsigned int i;

	for (i = 0; i < num; i++)
		if (msgs[i].flags & I2C_M_RD)
			len += msgs[i].len;

	if (len != size)
		return -EINVAL;

	for (i = 0; i < num; i++) {
		if (msgs[i].flags & I2C_M_RD) {
			memcpy(msgs[i].buf, buf + pos, msgs[i].len);
			pos += msgs[i].len;
		}
	}

	return 0;
}

static int tegra_bpmp_i2c_msg_len_check(struct i2c_msg *msgs, unsigned int num)
{
	size_t tx_len = 0, rx_len = 0;
	unsigned int i;

	for (i = 0; i < num; i++)
		if (!(msgs[i].flags & I2C_M_RD))
			tx_len += SERIALI2C_HDR_SIZE + msgs[i].len;

	if (tx_len > TEGRA_I2C_IPC_MAX_IN_BUF_SIZE)
		return -EINVAL;

	for (i = 0; i < num; i++)
		if ((msgs[i].flags & I2C_M_RD))
			rx_len += msgs[i].len;

	if (rx_len > TEGRA_I2C_IPC_MAX_OUT_BUF_SIZE)
		return -EINVAL;

	return 0;
}

static int tegra_bpmp_i2c_msg_xfer(struct tegra_bpmp_i2c *i2c,
				   struct mrq_i2c_request *request,
				   struct mrq_i2c_response *response,
				   bool atomic)
{
	struct tegra_bpmp_message msg;
	int err;

	request->cmd = CMD_I2C_XFER;
	request->xfer.bus_id = i2c->bus;

	memset(&msg, 0, sizeof(msg));
	msg.mrq = MRQ_I2C;
	msg.tx.data = request;
	msg.tx.size = sizeof(*request);
	msg.rx.data = response;
	msg.rx.size = sizeof(*response);

	if (atomic)
		err = tegra_bpmp_transfer_atomic(i2c->bpmp, &msg);
	else
		err = tegra_bpmp_transfer(i2c->bpmp, &msg);

	return err;
}

static int tegra_bpmp_i2c_xfer_common(struct i2c_adapter *adapter,
				      struct i2c_msg *msgs, int num,
				      bool atomic)
{
	struct tegra_bpmp_i2c *i2c = i2c_get_adapdata(adapter);
	struct mrq_i2c_response response;
	struct mrq_i2c_request request;
	int err;

	err = tegra_bpmp_i2c_msg_len_check(msgs, num);
	if (err < 0) {
		dev_err(i2c->dev, "unsupported message length\n");
		return err;
	}

	memset(&request, 0, sizeof(request));
	memset(&response, 0, sizeof(response));

	err = tegra_bpmp_serialize_i2c_msg(i2c, &request, msgs, num);
	if (err < 0) {
		dev_err(i2c->dev, "failed to serialize message: %d\n", err);
		return err;
	}

	err = tegra_bpmp_i2c_msg_xfer(i2c, &request, &response, atomic);
	if (err < 0) {
		dev_err(i2c->dev, "failed to transfer message: %d\n", err);
		return err;
	}

	err = tegra_bpmp_i2c_deserialize(i2c, &response, msgs, num);
	if (err < 0) {
		dev_err(i2c->dev, "failed to deserialize message: %d\n", err);
		return err;
	}

	return num;
}

static int tegra_bpmp_i2c_xfer(struct i2c_adapter *adapter,
			       struct i2c_msg *msgs, int num)
{
	return tegra_bpmp_i2c_xfer_common(adapter, msgs, num, false);
}

static int tegra_bpmp_i2c_xfer_atomic(struct i2c_adapter *adapter,
				      struct i2c_msg *msgs, int num)
{
	return tegra_bpmp_i2c_xfer_common(adapter, msgs, num, true);
}

static u32 tegra_bpmp_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR |
	       I2C_FUNC_PROTOCOL_MANGLING | I2C_FUNC_NOSTART;
}

static const struct i2c_algorithm tegra_bpmp_i2c_algo = {
	.master_xfer = tegra_bpmp_i2c_xfer,
	.master_xfer_atomic = tegra_bpmp_i2c_xfer_atomic,
	.functionality = tegra_bpmp_i2c_func,
};

static int tegra_bpmp_i2c_probe(struct platform_device *pdev)
{
	struct tegra_bpmp_i2c *i2c;
	u32 value;
	int err;

	i2c = devm_kzalloc(&pdev->dev, sizeof(*i2c), GFP_KERNEL);
	if (!i2c)
		return -ENOMEM;

	i2c->dev = &pdev->dev;

	i2c->bpmp = dev_get_drvdata(pdev->dev.parent);
	if (!i2c->bpmp)
		return -ENODEV;

	err = of_property_read_u32(pdev->dev.of_node, "nvidia,bpmp-bus-id",
				   &value);
	if (err < 0)
		return err;

	i2c->bus = value;

	i2c_set_adapdata(&i2c->adapter, i2c);
	i2c->adapter.owner = THIS_MODULE;
	strlcpy(i2c->adapter.name, "Tegra BPMP I2C adapter",
		sizeof(i2c->adapter.name));
	i2c->adapter.algo = &tegra_bpmp_i2c_algo;
	i2c->adapter.dev.parent = &pdev->dev;
	i2c->adapter.dev.of_node = pdev->dev.of_node;

	platform_set_drvdata(pdev, i2c);

	return i2c_add_adapter(&i2c->adapter);
}

static int tegra_bpmp_i2c_remove(struct platform_device *pdev)
{
	struct tegra_bpmp_i2c *i2c = platform_get_drvdata(pdev);

	i2c_del_adapter(&i2c->adapter);

	return 0;
}

static const struct of_device_id tegra_bpmp_i2c_of_match[] = {
	{ .compatible = "nvidia,tegra186-bpmp-i2c", },
	{ }
};
MODULE_DEVICE_TABLE(of, tegra_bpmp_i2c_of_match);

static struct platform_driver tegra_bpmp_i2c_driver = {
	.driver = {
		.name = "tegra-bpmp-i2c",
		.of_match_table = tegra_bpmp_i2c_of_match,
	},
	.probe = tegra_bpmp_i2c_probe,
	.remove = tegra_bpmp_i2c_remove,
};
module_platform_driver(tegra_bpmp_i2c_driver);

MODULE_DESCRIPTION("NVIDIA Tegra BPMP I2C bus controller driver");
MODULE_AUTHOR("Shardar Shariff Md <smohammed@nvidia.com>");
MODULE_AUTHOR("Juha-Matti Tilli");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
9952f691	1	// SPDX-License-Identifier: GPL-2.0-only
0297ffa6 SSM	2	/*
	3	* drivers/i2c/busses/i2c-tegra-bpmp.c
	4	*
	5	* Copyright (c) 2016 NVIDIA Corporation. All rights reserved.
	6	*
	7	* Author: Shardar Shariff Md <smohammed@nvidia.com>
0297ffa6 SSM	8	*/
	9
	10	#include <linux/err.h>
	11	#include <linux/i2c.h>
	12	#include <linux/init.h>
	13	#include <linux/kernel.h>
	14	#include <linux/module.h>
	15	#include <linux/of_device.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/pm_runtime.h>
	18
	19	#include <soc/tegra/bpmp-abi.h>
	20	#include <soc/tegra/bpmp.h>
	21
	22	/*
	23	* Serialized I2C message header size is 6 bytes and includes address, flags
	24	* and length
	25	*/
	26	#define SERIALI2C_HDR_SIZE 6
	27
	28	struct tegra_bpmp_i2c {
	29	struct i2c_adapter adapter;
	30	struct device *dev;
	31
	32	struct tegra_bpmp *bpmp;
	33	unsigned int bus;
	34	};
	35
	36	/*
	37	* Linux flags are translated to BPMP defined I2C flags that are used in BPMP
	38	* firmware I2C driver to avoid any issues in future if Linux I2C flags are
	39	* changed.
	40	*/
	41	static int tegra_bpmp_xlate_flags(u16 flags, u16 *out)
	42	{
	43	if (flags & I2C_M_TEN) {
	44	*out \|= SERIALI2C_TEN;
	45	flags &= ~I2C_M_TEN;
	46	}
	47
	48	if (flags & I2C_M_RD) {
	49	*out \|= SERIALI2C_RD;
	50	flags &= ~I2C_M_RD;
	51	}
	52
	53	if (flags & I2C_M_STOP) {
	54	*out \|= SERIALI2C_STOP;
	55	flags &= ~I2C_M_STOP;
	56	}
	57
	58	if (flags & I2C_M_NOSTART) {
	59	*out \|= SERIALI2C_NOSTART;
	60	flags &= ~I2C_M_NOSTART;
	61	}
	62
	63	if (flags & I2C_M_REV_DIR_ADDR) {
	64	*out \|= SERIALI2C_REV_DIR_ADDR;
	65	flags &= ~I2C_M_REV_DIR_ADDR;
	66	}
	67
	68	if (flags & I2C_M_IGNORE_NAK) {
	69	*out \|= SERIALI2C_IGNORE_NAK;
	70	flags &= ~I2C_M_IGNORE_NAK;
	71	}
72
73	if (flags & I2C_M_NO_RD_ACK) {
74	*out \|= SERIALI2C_NO_RD_ACK;
75	flags &= ~I2C_M_NO_RD_ACK;
76	}
77
78	if (flags & I2C_M_RECV_LEN) {
79	*out \|= SERIALI2C_RECV_LEN;
80	flags &= ~I2C_M_RECV_LEN;
81	}
82
bc1c2048	83	return 0;
0297ffa6 SSM	84	}
	85
	86	/**
	87	* The serialized I2C format is simply the following:
	88	* [addr little-endian][flags little-endian][len little-endian][data if write]
	89	* [addr little-endian][flags little-endian][len little-endian][data if write]
	90	* ...
	91	*
	92	* The flags are translated from Linux kernel representation to seriali2c
	93	* representation. Any undefined flag being set causes an error.
	94	*
	95	* The data is there only for writes. Reads have the data transferred in the
	96	* other direction, and thus data is not present.
	97	*
	98	* See deserialize_i2c documentation for the data format in the other direction.
	99	*/
	100	static int tegra_bpmp_serialize_i2c_msg(struct tegra_bpmp_i2c *i2c,
	101	struct mrq_i2c_request *request,
	102	struct i2c_msg *msgs,
	103	unsigned int num)
	104	{
	105	char *buf = request->xfer.data_buf;
	106	unsigned int i, j, pos = 0;
	107	int err;
	108
	109	for (i = 0; i < num; i++) {
	110	struct i2c_msg *msg = &msgs[i];
	111	u16 flags = 0;
	112
	113	err = tegra_bpmp_xlate_flags(msg->flags, &flags);
	114	if (err < 0)
	115	return err;
	116
	117	buf[pos++] = msg->addr & 0xff;
	118	buf[pos++] = (msg->addr & 0xff00) >> 8;
	119	buf[pos++] = flags & 0xff;
	120	buf[pos++] = (flags & 0xff00) >> 8;
	121	buf[pos++] = msg->len & 0xff;
	122	buf[pos++] = (msg->len & 0xff00) >> 8;
	123
	124	if ((flags & SERIALI2C_RD) == 0) {
	125	for (j = 0; j < msg->len; j++)
	126	buf[pos++] = msg->buf[j];
	127	}
	128	}
	129
	130	request->xfer.data_size = pos;
	131
	132	return 0;
	133	}
	134
	135	/**
	136	* The data in the BPMP -> CPU direction is composed of sequential blocks for
	137	* those messages that have I2C_M_RD. So, for example, if you have:
	138	*
	139	* - !I2C_M_RD, len == 5, data == a0 01 02 03 04
	140	* - !I2C_M_RD, len == 1, data == a0
	141	* - I2C_M_RD, len == 2, data == [uninitialized buffer 1]
	142	* - !I2C_M_RD, len == 1, data == a2
	143	* - I2C_M_RD, len == 2, data == [uninitialized buffer 2]
	144	*
	145	* ...then the data in the BPMP -> CPU direction would be 4 bytes total, and
	146	* would contain 2 bytes that will go to uninitialized buffer 1, and 2 bytes
	147	* that will go to uninitialized buffer 2.
148	*/
149	static int tegra_bpmp_i2c_deserialize(struct tegra_bpmp_i2c *i2c,
150	struct mrq_i2c_response *response,
151	struct i2c_msg *msgs,
152	unsigned int num)
153	{
154	size_t size = response->xfer.data_size, len = 0, pos = 0;
155	char *buf = response->xfer.data_buf;
156	unsigned int i;
157
158	for (i = 0; i < num; i++)
159	if (msgs[i].flags & I2C_M_RD)
160	len += msgs[i].len;
161
162	if (len != size)
163	return -EINVAL;
164
165	for (i = 0; i < num; i++) {
166	if (msgs[i].flags & I2C_M_RD) {
167	memcpy(msgs[i].buf, buf + pos, msgs[i].len);
168	pos += msgs[i].len;
169	}
170	}
171
172	return 0;
173	}
174
175	static int tegra_bpmp_i2c_msg_len_check(struct i2c_msg *msgs, unsigned int num)
176	{
177	size_t tx_len = 0, rx_len = 0;
178	unsigned int i;
179
180	for (i = 0; i < num; i++)
181	if (!(msgs[i].flags & I2C_M_RD))
182	tx_len += SERIALI2C_HDR_SIZE + msgs[i].len;
183
184	if (tx_len > TEGRA_I2C_IPC_MAX_IN_BUF_SIZE)
185	return -EINVAL;
186
187	for (i = 0; i < num; i++)
188	if ((msgs[i].flags & I2C_M_RD))
189	rx_len += msgs[i].len;
190
191	if (rx_len > TEGRA_I2C_IPC_MAX_OUT_BUF_SIZE)
192	return -EINVAL;
193
194	return 0;
195	}
196
197	static int tegra_bpmp_i2c_msg_xfer(struct tegra_bpmp_i2c *i2c,
198	struct mrq_i2c_request *request,
08960b02 WS	199	struct mrq_i2c_response *response,
08960b02 WS	200	bool atomic)
0297ffa6 SSM	201	{
	202	struct tegra_bpmp_message msg;
	203	int err;
	204
	205	request->cmd = CMD_I2C_XFER;
	206	request->xfer.bus_id = i2c->bus;
	207
	208	memset(&msg, 0, sizeof(msg));
	209	msg.mrq = MRQ_I2C;
	210	msg.tx.data = request;
	211	msg.tx.size = sizeof(*request);
	212	msg.rx.data = response;
	213	msg.rx.size = sizeof(*response);
	214
08960b02	215	if (atomic)
0297ffa6 SSM	216	err = tegra_bpmp_transfer_atomic(i2c->bpmp, &msg);
	217	else
	218	err = tegra_bpmp_transfer(i2c->bpmp, &msg);
	219
	220	return err;
	221	}
	222
08960b02 WS	223	static int tegra_bpmp_i2c_xfer_common(struct i2c_adapter *adapter,
	224	struct i2c_msg *msgs, int num,
	225	bool atomic)
0297ffa6 SSM	226	{
	227	struct tegra_bpmp_i2c *i2c = i2c_get_adapdata(adapter);
	228	struct mrq_i2c_response response;
	229	struct mrq_i2c_request request;
	230	int err;
	231
	232	err = tegra_bpmp_i2c_msg_len_check(msgs, num);
	233	if (err < 0) {
	234	dev_err(i2c->dev, "unsupported message length\n");
	235	return err;
	236	}
	237
	238	memset(&request, 0, sizeof(request));
	239	memset(&response, 0, sizeof(response));
	240
	241	err = tegra_bpmp_serialize_i2c_msg(i2c, &request, msgs, num);
	242	if (err < 0) {
	243	dev_err(i2c->dev, "failed to serialize message: %d\n", err);
	244	return err;
	245	}
	246
08960b02	247	err = tegra_bpmp_i2c_msg_xfer(i2c, &request, &response, atomic);
0297ffa6 SSM	248	if (err < 0) {
	249	dev_err(i2c->dev, "failed to transfer message: %d\n", err);
	250	return err;
	251	}
	252
	253	err = tegra_bpmp_i2c_deserialize(i2c, &response, msgs, num);
	254	if (err < 0) {
	255	dev_err(i2c->dev, "failed to deserialize message: %d\n", err);
	256	return err;
	257	}
	258
	259	return num;
	260	}
	261
08960b02 WS	262	static int tegra_bpmp_i2c_xfer(struct i2c_adapter *adapter,
	263	struct i2c_msg *msgs, int num)
	264	{
	265	return tegra_bpmp_i2c_xfer_common(adapter, msgs, num, false);
	266	}
	267
	268	static int tegra_bpmp_i2c_xfer_atomic(struct i2c_adapter *adapter,
	269	struct i2c_msg *msgs, int num)
	270	{
	271	return tegra_bpmp_i2c_xfer_common(adapter, msgs, num, true);
	272	}
	273
0297ffa6 SSM	274	static u32 tegra_bpmp_i2c_func(struct i2c_adapter *adapter)
	275	{
	276	return I2C_FUNC_I2C \| I2C_FUNC_SMBUS_EMUL \| I2C_FUNC_10BIT_ADDR \|
	277	I2C_FUNC_PROTOCOL_MANGLING \| I2C_FUNC_NOSTART;
	278	}
	279
	280	static const struct i2c_algorithm tegra_bpmp_i2c_algo = {
	281	.master_xfer = tegra_bpmp_i2c_xfer,
08960b02	282	.master_xfer_atomic = tegra_bpmp_i2c_xfer_atomic,
0297ffa6 SSM	283	.functionality = tegra_bpmp_i2c_func,
	284	};
	285
	286	static int tegra_bpmp_i2c_probe(struct platform_device *pdev)
	287	{
	288	struct tegra_bpmp_i2c *i2c;
	289	u32 value;
	290	int err;
	291
	292	i2c = devm_kzalloc(&pdev->dev, sizeof(*i2c), GFP_KERNEL);
	293	if (!i2c)
	294	return -ENOMEM;
	295
	296	i2c->dev = &pdev->dev;
	297
	298	i2c->bpmp = dev_get_drvdata(pdev->dev.parent);
	299	if (!i2c->bpmp)
	300	return -ENODEV;
	301
	302	err = of_property_read_u32(pdev->dev.of_node, "nvidia,bpmp-bus-id",
	303	&value);
	304	if (err < 0)
	305	return err;
	306
	307	i2c->bus = value;
	308
	309	i2c_set_adapdata(&i2c->adapter, i2c);
	310	i2c->adapter.owner = THIS_MODULE;
	311	strlcpy(i2c->adapter.name, "Tegra BPMP I2C adapter",
	312	sizeof(i2c->adapter.name));
	313	i2c->adapter.algo = &tegra_bpmp_i2c_algo;
	314	i2c->adapter.dev.parent = &pdev->dev;
	315	i2c->adapter.dev.of_node = pdev->dev.of_node;
	316
	317	platform_set_drvdata(pdev, i2c);
	318
	319	return i2c_add_adapter(&i2c->adapter);
	320	}
	321
	322	static int tegra_bpmp_i2c_remove(struct platform_device *pdev)
	323	{
	324	struct tegra_bpmp_i2c *i2c = platform_get_drvdata(pdev);
	325
	326	i2c_del_adapter(&i2c->adapter);
	327
	328	return 0;
	329	}
	330
	331	static const struct of_device_id tegra_bpmp_i2c_of_match[] = {
	332	{ .compatible = "nvidia,tegra186-bpmp-i2c", },
	333	{ }
	334	};
	335	MODULE_DEVICE_TABLE(of, tegra_bpmp_i2c_of_match);
	336
	337	static struct platform_driver tegra_bpmp_i2c_driver = {
	338	.driver = {
	339	.name = "tegra-bpmp-i2c",
	340	.of_match_table = tegra_bpmp_i2c_of_match,
	341	},
	342	.probe = tegra_bpmp_i2c_probe,
	343	.remove = tegra_bpmp_i2c_remove,
	344	};
	345	module_platform_driver(tegra_bpmp_i2c_driver);
	346
8c91fd5e	347	MODULE_DESCRIPTION("NVIDIA Tegra BPMP I2C bus controller driver");
0297ffa6 SSM	348	MODULE_AUTHOR("Shardar Shariff Md <smohammed@nvidia.com>");
	349	MODULE_AUTHOR("Juha-Matti Tilli");
	350	MODULE_LICENSE("GPL v2");