blob: fc95646994892219747354039c9826268b64c43e [file] [log] [blame]
Yen Linccf7e902012-03-06 19:00:23 +00001/*
2 * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
3 * Copyright (c) 2010-2011 NVIDIA Corporation
4 * NVIDIA Corporation <www.nvidia.com>
5 *
Wolfgang Denkd79de1d2013-07-08 09:37:19 +02006 * SPDX-License-Identifier: GPL-2.0+
Yen Linccf7e902012-03-06 19:00:23 +00007 */
8
9#include <common.h>
Simon Glass667aee92014-12-10 08:55:57 -070010#include <dm.h>
11#include <errno.h>
Yen Linccf7e902012-03-06 19:00:23 +000012#include <fdtdec.h>
13#include <i2c.h>
14#include <asm/io.h>
Yen Linccf7e902012-03-06 19:00:23 +000015#include <asm/arch/clock.h>
16#include <asm/arch/funcmux.h>
17#include <asm/arch/gpio.h>
18#include <asm/arch/pinmux.h>
Tom Warrenab371962012-09-19 15:50:56 -070019#include <asm/arch-tegra/clk_rst.h>
20#include <asm/arch-tegra/tegra_i2c.h>
Yen Linccf7e902012-03-06 19:00:23 +000021
22DECLARE_GLOBAL_DATA_PTR;
23
Simon Glass667aee92014-12-10 08:55:57 -070024enum i2c_type {
25 TYPE_114,
26 TYPE_STD,
27 TYPE_DVC,
28};
29
Yen Linccf7e902012-03-06 19:00:23 +000030/* Information about i2c controller */
31struct i2c_bus {
32 int id;
33 enum periph_id periph_id;
34 int speed;
35 int pinmux_config;
36 struct i2c_control *control;
37 struct i2c_ctlr *regs;
Simon Glass667aee92014-12-10 08:55:57 -070038 enum i2c_type type;
Yen Linccf7e902012-03-06 19:00:23 +000039 int inited; /* bus is inited */
40};
41
Yen Linccf7e902012-03-06 19:00:23 +000042static void set_packet_mode(struct i2c_bus *i2c_bus)
43{
44 u32 config;
45
46 config = I2C_CNFG_NEW_MASTER_FSM_MASK | I2C_CNFG_PACKET_MODE_MASK;
47
Simon Glass667aee92014-12-10 08:55:57 -070048 if (i2c_bus->type == TYPE_DVC) {
Yen Linccf7e902012-03-06 19:00:23 +000049 struct dvc_ctlr *dvc = (struct dvc_ctlr *)i2c_bus->regs;
50
51 writel(config, &dvc->cnfg);
52 } else {
53 writel(config, &i2c_bus->regs->cnfg);
54 /*
55 * program I2C_SL_CNFG.NEWSL to ENABLE. This fixes probe
56 * issues, i.e., some slaves may be wrongly detected.
57 */
58 setbits_le32(&i2c_bus->regs->sl_cnfg, I2C_SL_CNFG_NEWSL_MASK);
59 }
60}
61
62static void i2c_reset_controller(struct i2c_bus *i2c_bus)
63{
64 /* Reset I2C controller. */
65 reset_periph(i2c_bus->periph_id, 1);
66
67 /* re-program config register to packet mode */
68 set_packet_mode(i2c_bus);
69}
70
71static void i2c_init_controller(struct i2c_bus *i2c_bus)
72{
Simon Glass667aee92014-12-10 08:55:57 -070073 if (!i2c_bus->speed)
74 return;
75 debug("%s: speed=%d\n", __func__, i2c_bus->speed);
Yen Linccf7e902012-03-06 19:00:23 +000076 /*
77 * Use PLLP - DP-04508-001_v06 datasheet indicates a divisor of 8
78 * here, in section 23.3.1, but in fact we seem to need a factor of
79 * 16 to get the right frequency.
80 */
81 clock_start_periph_pll(i2c_bus->periph_id, CLOCK_ID_PERIPH,
Tom Warrenf8cf4b22013-02-08 07:25:30 +000082 i2c_bus->speed * 2 * 8);
83
Simon Glass667aee92014-12-10 08:55:57 -070084 if (i2c_bus->type == TYPE_114) {
Tom Warrenf8cf4b22013-02-08 07:25:30 +000085 /*
86 * T114 I2C went to a single clock source for standard/fast and
87 * HS clock speeds. The new clock rate setting calculation is:
88 * SCL = CLK_SOURCE.I2C /
89 * (CLK_MULT_STD_FAST_MODE * (I2C_CLK_DIV_STD_FAST_MODE+1) *
90 * I2C FREQUENCY DIVISOR) as per the T114 TRM (sec 30.3.1).
91 *
92 * NOTE: We do this here, after the initial clock/pll start,
93 * because if we read the clk_div reg before the controller
94 * is running, we hang, and we need it for the new calc.
95 */
96 int clk_div_stdfst_mode = readl(&i2c_bus->regs->clk_div) >> 16;
97 debug("%s: CLK_DIV_STD_FAST_MODE setting = %d\n", __func__,
98 clk_div_stdfst_mode);
99
100 clock_start_periph_pll(i2c_bus->periph_id, CLOCK_ID_PERIPH,
101 CLK_MULT_STD_FAST_MODE * (clk_div_stdfst_mode + 1) *
102 i2c_bus->speed * 2);
103 }
Yen Linccf7e902012-03-06 19:00:23 +0000104
105 /* Reset I2C controller. */
106 i2c_reset_controller(i2c_bus);
107
108 /* Configure I2C controller. */
Simon Glass667aee92014-12-10 08:55:57 -0700109 if (i2c_bus->type == TYPE_DVC) { /* only for DVC I2C */
Yen Linccf7e902012-03-06 19:00:23 +0000110 struct dvc_ctlr *dvc = (struct dvc_ctlr *)i2c_bus->regs;
111
112 setbits_le32(&dvc->ctrl3, DVC_CTRL_REG3_I2C_HW_SW_PROG_MASK);
113 }
114
115 funcmux_select(i2c_bus->periph_id, i2c_bus->pinmux_config);
116}
117
118static void send_packet_headers(
119 struct i2c_bus *i2c_bus,
120 struct i2c_trans_info *trans,
Stephen Warrendb882252014-06-25 10:57:27 -0600121 u32 packet_id,
122 bool end_with_repeated_start)
Yen Linccf7e902012-03-06 19:00:23 +0000123{
124 u32 data;
125
126 /* prepare header1: Header size = 0 Protocol = I2C, pktType = 0 */
127 data = PROTOCOL_TYPE_I2C << PKT_HDR1_PROTOCOL_SHIFT;
128 data |= packet_id << PKT_HDR1_PKT_ID_SHIFT;
129 data |= i2c_bus->id << PKT_HDR1_CTLR_ID_SHIFT;
130 writel(data, &i2c_bus->control->tx_fifo);
131 debug("pkt header 1 sent (0x%x)\n", data);
132
133 /* prepare header2 */
134 data = (trans->num_bytes - 1) << PKT_HDR2_PAYLOAD_SIZE_SHIFT;
135 writel(data, &i2c_bus->control->tx_fifo);
136 debug("pkt header 2 sent (0x%x)\n", data);
137
138 /* prepare IO specific header: configure the slave address */
139 data = trans->address << PKT_HDR3_SLAVE_ADDR_SHIFT;
140
141 /* Enable Read if it is not a write transaction */
142 if (!(trans->flags & I2C_IS_WRITE))
143 data |= PKT_HDR3_READ_MODE_MASK;
Stephen Warrendb882252014-06-25 10:57:27 -0600144 if (end_with_repeated_start)
145 data |= PKT_HDR3_REPEAT_START_MASK;
Yen Linccf7e902012-03-06 19:00:23 +0000146
147 /* Write I2C specific header */
148 writel(data, &i2c_bus->control->tx_fifo);
149 debug("pkt header 3 sent (0x%x)\n", data);
150}
151
152static int wait_for_tx_fifo_empty(struct i2c_control *control)
153{
154 u32 count;
155 int timeout_us = I2C_TIMEOUT_USEC;
156
157 while (timeout_us >= 0) {
158 count = (readl(&control->fifo_status) & TX_FIFO_EMPTY_CNT_MASK)
159 >> TX_FIFO_EMPTY_CNT_SHIFT;
160 if (count == I2C_FIFO_DEPTH)
161 return 1;
162 udelay(10);
163 timeout_us -= 10;
164 }
165
166 return 0;
167}
168
169static int wait_for_rx_fifo_notempty(struct i2c_control *control)
170{
171 u32 count;
172 int timeout_us = I2C_TIMEOUT_USEC;
173
174 while (timeout_us >= 0) {
175 count = (readl(&control->fifo_status) & TX_FIFO_FULL_CNT_MASK)
176 >> TX_FIFO_FULL_CNT_SHIFT;
177 if (count)
178 return 1;
179 udelay(10);
180 timeout_us -= 10;
181 }
182
183 return 0;
184}
185
186static int wait_for_transfer_complete(struct i2c_control *control)
187{
188 int int_status;
189 int timeout_us = I2C_TIMEOUT_USEC;
190
191 while (timeout_us >= 0) {
192 int_status = readl(&control->int_status);
193 if (int_status & I2C_INT_NO_ACK_MASK)
194 return -int_status;
195 if (int_status & I2C_INT_ARBITRATION_LOST_MASK)
196 return -int_status;
197 if (int_status & I2C_INT_XFER_COMPLETE_MASK)
198 return 0;
199
200 udelay(10);
201 timeout_us -= 10;
202 }
203
204 return -1;
205}
206
207static int send_recv_packets(struct i2c_bus *i2c_bus,
208 struct i2c_trans_info *trans)
209{
210 struct i2c_control *control = i2c_bus->control;
211 u32 int_status;
212 u32 words;
213 u8 *dptr;
214 u32 local;
215 uchar last_bytes;
216 int error = 0;
217 int is_write = trans->flags & I2C_IS_WRITE;
218
219 /* clear status from previous transaction, XFER_COMPLETE, NOACK, etc. */
220 int_status = readl(&control->int_status);
221 writel(int_status, &control->int_status);
222
Stephen Warrendb882252014-06-25 10:57:27 -0600223 send_packet_headers(i2c_bus, trans, 1,
224 trans->flags & I2C_USE_REPEATED_START);
Yen Linccf7e902012-03-06 19:00:23 +0000225
226 words = DIV_ROUND_UP(trans->num_bytes, 4);
227 last_bytes = trans->num_bytes & 3;
228 dptr = trans->buf;
229
230 while (words) {
231 u32 *wptr = (u32 *)dptr;
232
233 if (is_write) {
234 /* deal with word alignment */
Stephen Warren6e06f462014-06-25 10:57:28 -0600235 if ((words == 1) && last_bytes) {
236 local = 0;
237 memcpy(&local, dptr, last_bytes);
238 } else if ((unsigned)dptr & 3) {
Yen Linccf7e902012-03-06 19:00:23 +0000239 memcpy(&local, dptr, sizeof(u32));
Yen Linccf7e902012-03-06 19:00:23 +0000240 } else {
Stephen Warren6e06f462014-06-25 10:57:28 -0600241 local = *wptr;
Yen Linccf7e902012-03-06 19:00:23 +0000242 }
Stephen Warren6e06f462014-06-25 10:57:28 -0600243 writel(local, &control->tx_fifo);
244 debug("pkt data sent (0x%x)\n", local);
Yen Linccf7e902012-03-06 19:00:23 +0000245 if (!wait_for_tx_fifo_empty(control)) {
246 error = -1;
247 goto exit;
248 }
249 } else {
250 if (!wait_for_rx_fifo_notempty(control)) {
251 error = -1;
252 goto exit;
253 }
254 /*
255 * for the last word, we read into our local buffer,
256 * in case that caller did not provide enough buffer.
257 */
258 local = readl(&control->rx_fifo);
259 if ((words == 1) && last_bytes)
260 memcpy(dptr, (char *)&local, last_bytes);
261 else if ((unsigned)dptr & 3)
262 memcpy(dptr, &local, sizeof(u32));
263 else
264 *wptr = local;
265 debug("pkt data received (0x%x)\n", local);
266 }
267 words--;
268 dptr += sizeof(u32);
269 }
270
271 if (wait_for_transfer_complete(control)) {
272 error = -1;
273 goto exit;
274 }
275 return 0;
276exit:
277 /* error, reset the controller. */
278 i2c_reset_controller(i2c_bus);
279
280 return error;
281}
282
Simon Glass667aee92014-12-10 08:55:57 -0700283static int tegra_i2c_write_data(struct i2c_bus *i2c_bus, u32 addr, u8 *data,
Stephen Warrendb882252014-06-25 10:57:27 -0600284 u32 len, bool end_with_repeated_start)
Yen Linccf7e902012-03-06 19:00:23 +0000285{
286 int error;
287 struct i2c_trans_info trans_info;
288
289 trans_info.address = addr;
290 trans_info.buf = data;
291 trans_info.flags = I2C_IS_WRITE;
Stephen Warrendb882252014-06-25 10:57:27 -0600292 if (end_with_repeated_start)
293 trans_info.flags |= I2C_USE_REPEATED_START;
Yen Linccf7e902012-03-06 19:00:23 +0000294 trans_info.num_bytes = len;
295 trans_info.is_10bit_address = 0;
296
Simon Glass667aee92014-12-10 08:55:57 -0700297 error = send_recv_packets(i2c_bus, &trans_info);
Yen Linccf7e902012-03-06 19:00:23 +0000298 if (error)
Tom Warren22562a42012-09-04 17:00:24 -0700299 debug("tegra_i2c_write_data: Error (%d) !!!\n", error);
Yen Linccf7e902012-03-06 19:00:23 +0000300
301 return error;
302}
303
Simon Glass667aee92014-12-10 08:55:57 -0700304static int tegra_i2c_read_data(struct i2c_bus *i2c_bus, u32 addr, u8 *data,
Simon Glass474bccb2012-10-30 07:28:52 +0000305 u32 len)
Yen Linccf7e902012-03-06 19:00:23 +0000306{
307 int error;
308 struct i2c_trans_info trans_info;
309
310 trans_info.address = addr | 1;
311 trans_info.buf = data;
312 trans_info.flags = 0;
313 trans_info.num_bytes = len;
314 trans_info.is_10bit_address = 0;
315
Simon Glass667aee92014-12-10 08:55:57 -0700316 error = send_recv_packets(i2c_bus, &trans_info);
Yen Linccf7e902012-03-06 19:00:23 +0000317 if (error)
Tom Warren22562a42012-09-04 17:00:24 -0700318 debug("tegra_i2c_read_data: Error (%d) !!!\n", error);
Yen Linccf7e902012-03-06 19:00:23 +0000319
320 return error;
321}
322
Simon Glass667aee92014-12-10 08:55:57 -0700323static int tegra_i2c_set_bus_speed(struct udevice *dev, unsigned int speed)
Yen Linccf7e902012-03-06 19:00:23 +0000324{
Simon Glass667aee92014-12-10 08:55:57 -0700325 struct i2c_bus *i2c_bus = dev_get_priv(dev);
Simon Glass474bccb2012-10-30 07:28:52 +0000326
Simon Glass667aee92014-12-10 08:55:57 -0700327 i2c_bus->speed = speed;
328 i2c_init_controller(i2c_bus);
Yen Linccf7e902012-03-06 19:00:23 +0000329
330 return 0;
331}
332
Simon Glass667aee92014-12-10 08:55:57 -0700333static int tegra_i2c_probe(struct udevice *dev)
Yen Linccf7e902012-03-06 19:00:23 +0000334{
Simon Glass667aee92014-12-10 08:55:57 -0700335 struct i2c_bus *i2c_bus = dev_get_priv(dev);
336 const void *blob = gd->fdt_blob;
337 int node = dev->of_offset;
338 bool is_dvc;
339
340 i2c_bus->id = dev->seq;
Simon Glass46227bd2015-03-25 12:21:55 -0600341 i2c_bus->type = dev_get_driver_data(dev);
Yen Linccf7e902012-03-06 19:00:23 +0000342 i2c_bus->regs = (struct i2c_ctlr *)fdtdec_get_addr(blob, node, "reg");
343
344 /*
345 * We don't have a binding for pinmux yet. Leave it out for now. So
346 * far no one needs anything other than the default.
347 */
348 i2c_bus->pinmux_config = FUNCMUX_DEFAULT;
Yen Linccf7e902012-03-06 19:00:23 +0000349 i2c_bus->periph_id = clock_decode_periph_id(blob, node);
350
351 /*
352 * We can't specify the pinmux config in the fdt, so I2C2 will not
353 * work on Seaboard. It normally has no devices on it anyway.
354 * You could add in this little hack if you need to use it.
355 * The correct solution is a pinmux binding in the fdt.
356 *
357 * if (i2c_bus->periph_id == PERIPH_ID_I2C2)
358 * i2c_bus->pinmux_config = FUNCMUX_I2C2_PTA;
359 */
360 if (i2c_bus->periph_id == -1)
Simon Glass667aee92014-12-10 08:55:57 -0700361 return -EINVAL;
Yen Linccf7e902012-03-06 19:00:23 +0000362
Simon Glass46227bd2015-03-25 12:21:55 -0600363 is_dvc = dev_get_driver_data(dev) == TYPE_DVC;
Simon Glass667aee92014-12-10 08:55:57 -0700364 if (is_dvc) {
365 i2c_bus->control =
366 &((struct dvc_ctlr *)i2c_bus->regs)->control;
367 } else {
368 i2c_bus->control = &i2c_bus->regs->control;
Yen Linccf7e902012-03-06 19:00:23 +0000369 }
Simon Glass667aee92014-12-10 08:55:57 -0700370 i2c_init_controller(i2c_bus);
371 debug("%s: controller bus %d at %p, periph_id %d, speed %d: ",
372 is_dvc ? "dvc" : "i2c", dev->seq, i2c_bus->regs,
373 i2c_bus->periph_id, i2c_bus->speed);
Yen Linccf7e902012-03-06 19:00:23 +0000374
375 return 0;
376}
377
Yen Linccf7e902012-03-06 19:00:23 +0000378/* i2c write version without the register address */
Simon Glass667aee92014-12-10 08:55:57 -0700379static int i2c_write_data(struct i2c_bus *i2c_bus, uchar chip, uchar *buffer,
Jeroen Hofstee93dfae72014-10-08 22:57:46 +0200380 int len, bool end_with_repeated_start)
Yen Linccf7e902012-03-06 19:00:23 +0000381{
382 int rc;
383
384 debug("i2c_write_data: chip=0x%x, len=0x%x\n", chip, len);
385 debug("write_data: ");
386 /* use rc for counter */
387 for (rc = 0; rc < len; ++rc)
388 debug(" 0x%02x", buffer[rc]);
389 debug("\n");
390
391 /* Shift 7-bit address over for lower-level i2c functions */
Simon Glass667aee92014-12-10 08:55:57 -0700392 rc = tegra_i2c_write_data(i2c_bus, chip << 1, buffer, len,
Stephen Warrendb882252014-06-25 10:57:27 -0600393 end_with_repeated_start);
Yen Linccf7e902012-03-06 19:00:23 +0000394 if (rc)
395 debug("i2c_write_data(): rc=%d\n", rc);
396
397 return rc;
398}
399
400/* i2c read version without the register address */
Simon Glass667aee92014-12-10 08:55:57 -0700401static int i2c_read_data(struct i2c_bus *i2c_bus, uchar chip, uchar *buffer,
402 int len)
Yen Linccf7e902012-03-06 19:00:23 +0000403{
404 int rc;
405
406 debug("inside i2c_read_data():\n");
407 /* Shift 7-bit address over for lower-level i2c functions */
Simon Glass667aee92014-12-10 08:55:57 -0700408 rc = tegra_i2c_read_data(i2c_bus, chip << 1, buffer, len);
Yen Linccf7e902012-03-06 19:00:23 +0000409 if (rc) {
410 debug("i2c_read_data(): rc=%d\n", rc);
411 return rc;
412 }
413
414 debug("i2c_read_data: ");
415 /* reuse rc for counter*/
416 for (rc = 0; rc < len; ++rc)
417 debug(" 0x%02x", buffer[rc]);
418 debug("\n");
419
420 return 0;
421}
422
423/* Probe to see if a chip is present. */
Simon Glass667aee92014-12-10 08:55:57 -0700424static int tegra_i2c_probe_chip(struct udevice *bus, uint chip_addr,
425 uint chip_flags)
Yen Linccf7e902012-03-06 19:00:23 +0000426{
Simon Glass667aee92014-12-10 08:55:57 -0700427 struct i2c_bus *i2c_bus = dev_get_priv(bus);
Yen Linccf7e902012-03-06 19:00:23 +0000428 int rc;
Simon Glass667aee92014-12-10 08:55:57 -0700429 u8 reg;
Yen Linccf7e902012-03-06 19:00:23 +0000430
Simon Glass667aee92014-12-10 08:55:57 -0700431 /* Shift 7-bit address over for lower-level i2c functions */
432 rc = tegra_i2c_write_data(i2c_bus, chip_addr << 1, &reg, sizeof(reg),
433 false);
Yen Linccf7e902012-03-06 19:00:23 +0000434
Simon Glass667aee92014-12-10 08:55:57 -0700435 return rc;
Yen Linccf7e902012-03-06 19:00:23 +0000436}
437
Simon Glass667aee92014-12-10 08:55:57 -0700438static int tegra_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
439 int nmsgs)
Yen Linccf7e902012-03-06 19:00:23 +0000440{
Simon Glass667aee92014-12-10 08:55:57 -0700441 struct i2c_bus *i2c_bus = dev_get_priv(bus);
442 int ret;
Yen Linccf7e902012-03-06 19:00:23 +0000443
Simon Glass667aee92014-12-10 08:55:57 -0700444 debug("i2c_xfer: %d messages\n", nmsgs);
445 for (; nmsgs > 0; nmsgs--, msg++) {
446 bool next_is_read = nmsgs > 1 && (msg[1].flags & I2C_M_RD);
447
448 debug("i2c_xfer: chip=0x%x, len=0x%x\n", msg->addr, msg->len);
449 if (msg->flags & I2C_M_RD) {
450 ret = i2c_read_data(i2c_bus, msg->addr, msg->buf,
451 msg->len);
452 } else {
453 ret = i2c_write_data(i2c_bus, msg->addr, msg->buf,
454 msg->len, next_is_read);
Yen Linccf7e902012-03-06 19:00:23 +0000455 }
Simon Glass667aee92014-12-10 08:55:57 -0700456 if (ret) {
457 debug("i2c_write: error sending\n");
458 return -EREMOTEIO;
Yen Linccf7e902012-03-06 19:00:23 +0000459 }
460 }
461
462 return 0;
463}
464
Simon Glass667aee92014-12-10 08:55:57 -0700465int tegra_i2c_get_dvc_bus(struct udevice **busp)
Yen Linccf7e902012-03-06 19:00:23 +0000466{
Simon Glass667aee92014-12-10 08:55:57 -0700467 struct udevice *bus;
Yen Linccf7e902012-03-06 19:00:23 +0000468
Simon Glass667aee92014-12-10 08:55:57 -0700469 for (uclass_first_device(UCLASS_I2C, &bus);
470 bus;
471 uclass_next_device(&bus)) {
Simon Glass46227bd2015-03-25 12:21:55 -0600472 if (dev_get_driver_data(bus) == TYPE_DVC) {
Simon Glass667aee92014-12-10 08:55:57 -0700473 *busp = bus;
474 return 0;
Yen Linccf7e902012-03-06 19:00:23 +0000475 }
476 }
477
Simon Glass667aee92014-12-10 08:55:57 -0700478 return -ENODEV;
Yen Linccf7e902012-03-06 19:00:23 +0000479}
Simon Glassa0d0b762012-04-02 13:19:01 +0000480
Simon Glass667aee92014-12-10 08:55:57 -0700481static const struct dm_i2c_ops tegra_i2c_ops = {
482 .xfer = tegra_i2c_xfer,
483 .probe_chip = tegra_i2c_probe_chip,
484 .set_bus_speed = tegra_i2c_set_bus_speed,
485};
Simon Glassa0d0b762012-04-02 13:19:01 +0000486
Simon Glass667aee92014-12-10 08:55:57 -0700487static const struct udevice_id tegra_i2c_ids[] = {
488 { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 },
489 { .compatible = "nvidia,tegra20-i2c", .data = TYPE_STD },
490 { .compatible = "nvidia,tegra20-i2c-dvc", .data = TYPE_DVC },
491 { }
492};
493
494U_BOOT_DRIVER(i2c_tegra) = {
495 .name = "i2c_tegra",
496 .id = UCLASS_I2C,
497 .of_match = tegra_i2c_ids,
Simon Glass667aee92014-12-10 08:55:57 -0700498 .probe = tegra_i2c_probe,
Simon Glass667aee92014-12-10 08:55:57 -0700499 .priv_auto_alloc_size = sizeof(struct i2c_bus),
500 .ops = &tegra_i2c_ops,
501};