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