1// SPDX-License-Identifier: GPL-2.0
2//
3// Copyright (c) 2021 MediaTek Inc.
4
5#include <linux/clk.h>
6#include <linux/iopoll.h>
7#include <linux/module.h>
8#include <linux/of.h>
9#include <linux/platform_device.h>
10#include <linux/property.h>
11#include <linux/spmi.h>
12
13#define SWINF_IDLE 0x00
14#define SWINF_WFVLDCLR 0x06
15
16#define GET_SWINF(x) (((x) >> 1) & 0x7)
17
18#define PMIF_CMD_REG_0 0
19#define PMIF_CMD_REG 1
20#define PMIF_CMD_EXT_REG 2
21#define PMIF_CMD_EXT_REG_LONG 3
22
23#define PMIF_DELAY_US 10
24#define PMIF_TIMEOUT_US (10 * 1000)
25
26#define PMIF_CHAN_OFFSET 0x5
27
28#define PMIF_MAX_CLKS 3
29
30#define SPMI_OP_ST_BUSY 1
31
32struct ch_reg {
33 u32 ch_sta;
34 u32 wdata;
35 u32 rdata;
36 u32 ch_send;
37 u32 ch_rdy;
38};
39
40struct pmif_data {
41 const u32 *regs;
42 const u32 *spmimst_regs;
43 u32 soc_chan;
44};
45
46struct pmif {
47 void __iomem *base;
48 void __iomem *spmimst_base;
49 struct ch_reg chan;
50 struct clk_bulk_data clks[PMIF_MAX_CLKS];
51 size_t nclks;
52 const struct pmif_data *data;
53 raw_spinlock_t lock;
54};
55
56static const char * const pmif_clock_names[] = {
57 "pmif_sys_ck", "pmif_tmr_ck", "spmimst_clk_mux",
58};
59
60enum pmif_regs {
61 PMIF_INIT_DONE,
62 PMIF_INF_EN,
63 PMIF_ARB_EN,
64 PMIF_CMDISSUE_EN,
65 PMIF_TIMER_CTRL,
66 PMIF_SPI_MODE_CTRL,
67 PMIF_IRQ_EVENT_EN_0,
68 PMIF_IRQ_FLAG_0,
69 PMIF_IRQ_CLR_0,
70 PMIF_IRQ_EVENT_EN_1,
71 PMIF_IRQ_FLAG_1,
72 PMIF_IRQ_CLR_1,
73 PMIF_IRQ_EVENT_EN_2,
74 PMIF_IRQ_FLAG_2,
75 PMIF_IRQ_CLR_2,
76 PMIF_IRQ_EVENT_EN_3,
77 PMIF_IRQ_FLAG_3,
78 PMIF_IRQ_CLR_3,
79 PMIF_IRQ_EVENT_EN_4,
80 PMIF_IRQ_FLAG_4,
81 PMIF_IRQ_CLR_4,
82 PMIF_WDT_EVENT_EN_0,
83 PMIF_WDT_FLAG_0,
84 PMIF_WDT_EVENT_EN_1,
85 PMIF_WDT_FLAG_1,
86 PMIF_SWINF_0_STA,
87 PMIF_SWINF_0_WDATA_31_0,
88 PMIF_SWINF_0_RDATA_31_0,
89 PMIF_SWINF_0_ACC,
90 PMIF_SWINF_0_VLD_CLR,
91 PMIF_SWINF_1_STA,
92 PMIF_SWINF_1_WDATA_31_0,
93 PMIF_SWINF_1_RDATA_31_0,
94 PMIF_SWINF_1_ACC,
95 PMIF_SWINF_1_VLD_CLR,
96 PMIF_SWINF_2_STA,
97 PMIF_SWINF_2_WDATA_31_0,
98 PMIF_SWINF_2_RDATA_31_0,
99 PMIF_SWINF_2_ACC,
100 PMIF_SWINF_2_VLD_CLR,
101 PMIF_SWINF_3_STA,
102 PMIF_SWINF_3_WDATA_31_0,
103 PMIF_SWINF_3_RDATA_31_0,
104 PMIF_SWINF_3_ACC,
105 PMIF_SWINF_3_VLD_CLR,
106};
107
108static const u32 mt6873_regs[] = {
109 [PMIF_INIT_DONE] = 0x0000,
110 [PMIF_INF_EN] = 0x0024,
111 [PMIF_ARB_EN] = 0x0150,
112 [PMIF_CMDISSUE_EN] = 0x03B4,
113 [PMIF_TIMER_CTRL] = 0x03E0,
114 [PMIF_SPI_MODE_CTRL] = 0x0400,
115 [PMIF_IRQ_EVENT_EN_0] = 0x0418,
116 [PMIF_IRQ_FLAG_0] = 0x0420,
117 [PMIF_IRQ_CLR_0] = 0x0424,
118 [PMIF_IRQ_EVENT_EN_1] = 0x0428,
119 [PMIF_IRQ_FLAG_1] = 0x0430,
120 [PMIF_IRQ_CLR_1] = 0x0434,
121 [PMIF_IRQ_EVENT_EN_2] = 0x0438,
122 [PMIF_IRQ_FLAG_2] = 0x0440,
123 [PMIF_IRQ_CLR_2] = 0x0444,
124 [PMIF_IRQ_EVENT_EN_3] = 0x0448,
125 [PMIF_IRQ_FLAG_3] = 0x0450,
126 [PMIF_IRQ_CLR_3] = 0x0454,
127 [PMIF_IRQ_EVENT_EN_4] = 0x0458,
128 [PMIF_IRQ_FLAG_4] = 0x0460,
129 [PMIF_IRQ_CLR_4] = 0x0464,
130 [PMIF_WDT_EVENT_EN_0] = 0x046C,
131 [PMIF_WDT_FLAG_0] = 0x0470,
132 [PMIF_WDT_EVENT_EN_1] = 0x0474,
133 [PMIF_WDT_FLAG_1] = 0x0478,
134 [PMIF_SWINF_0_ACC] = 0x0C00,
135 [PMIF_SWINF_0_WDATA_31_0] = 0x0C04,
136 [PMIF_SWINF_0_RDATA_31_0] = 0x0C14,
137 [PMIF_SWINF_0_VLD_CLR] = 0x0C24,
138 [PMIF_SWINF_0_STA] = 0x0C28,
139 [PMIF_SWINF_1_ACC] = 0x0C40,
140 [PMIF_SWINF_1_WDATA_31_0] = 0x0C44,
141 [PMIF_SWINF_1_RDATA_31_0] = 0x0C54,
142 [PMIF_SWINF_1_VLD_CLR] = 0x0C64,
143 [PMIF_SWINF_1_STA] = 0x0C68,
144 [PMIF_SWINF_2_ACC] = 0x0C80,
145 [PMIF_SWINF_2_WDATA_31_0] = 0x0C84,
146 [PMIF_SWINF_2_RDATA_31_0] = 0x0C94,
147 [PMIF_SWINF_2_VLD_CLR] = 0x0CA4,
148 [PMIF_SWINF_2_STA] = 0x0CA8,
149 [PMIF_SWINF_3_ACC] = 0x0CC0,
150 [PMIF_SWINF_3_WDATA_31_0] = 0x0CC4,
151 [PMIF_SWINF_3_RDATA_31_0] = 0x0CD4,
152 [PMIF_SWINF_3_VLD_CLR] = 0x0CE4,
153 [PMIF_SWINF_3_STA] = 0x0CE8,
154};
155
156static const u32 mt8195_regs[] = {
157 [PMIF_INIT_DONE] = 0x0000,
158 [PMIF_INF_EN] = 0x0024,
159 [PMIF_ARB_EN] = 0x0150,
160 [PMIF_CMDISSUE_EN] = 0x03B8,
161 [PMIF_TIMER_CTRL] = 0x03E4,
162 [PMIF_SPI_MODE_CTRL] = 0x0408,
163 [PMIF_IRQ_EVENT_EN_0] = 0x0420,
164 [PMIF_IRQ_FLAG_0] = 0x0428,
165 [PMIF_IRQ_CLR_0] = 0x042C,
166 [PMIF_IRQ_EVENT_EN_1] = 0x0430,
167 [PMIF_IRQ_FLAG_1] = 0x0438,
168 [PMIF_IRQ_CLR_1] = 0x043C,
169 [PMIF_IRQ_EVENT_EN_2] = 0x0440,
170 [PMIF_IRQ_FLAG_2] = 0x0448,
171 [PMIF_IRQ_CLR_2] = 0x044C,
172 [PMIF_IRQ_EVENT_EN_3] = 0x0450,
173 [PMIF_IRQ_FLAG_3] = 0x0458,
174 [PMIF_IRQ_CLR_3] = 0x045C,
175 [PMIF_IRQ_EVENT_EN_4] = 0x0460,
176 [PMIF_IRQ_FLAG_4] = 0x0468,
177 [PMIF_IRQ_CLR_4] = 0x046C,
178 [PMIF_WDT_EVENT_EN_0] = 0x0474,
179 [PMIF_WDT_FLAG_0] = 0x0478,
180 [PMIF_WDT_EVENT_EN_1] = 0x047C,
181 [PMIF_WDT_FLAG_1] = 0x0480,
182 [PMIF_SWINF_0_ACC] = 0x0800,
183 [PMIF_SWINF_0_WDATA_31_0] = 0x0804,
184 [PMIF_SWINF_0_RDATA_31_0] = 0x0814,
185 [PMIF_SWINF_0_VLD_CLR] = 0x0824,
186 [PMIF_SWINF_0_STA] = 0x0828,
187 [PMIF_SWINF_1_ACC] = 0x0840,
188 [PMIF_SWINF_1_WDATA_31_0] = 0x0844,
189 [PMIF_SWINF_1_RDATA_31_0] = 0x0854,
190 [PMIF_SWINF_1_VLD_CLR] = 0x0864,
191 [PMIF_SWINF_1_STA] = 0x0868,
192 [PMIF_SWINF_2_ACC] = 0x0880,
193 [PMIF_SWINF_2_WDATA_31_0] = 0x0884,
194 [PMIF_SWINF_2_RDATA_31_0] = 0x0894,
195 [PMIF_SWINF_2_VLD_CLR] = 0x08A4,
196 [PMIF_SWINF_2_STA] = 0x08A8,
197 [PMIF_SWINF_3_ACC] = 0x08C0,
198 [PMIF_SWINF_3_WDATA_31_0] = 0x08C4,
199 [PMIF_SWINF_3_RDATA_31_0] = 0x08D4,
200 [PMIF_SWINF_3_VLD_CLR] = 0x08E4,
201 [PMIF_SWINF_3_STA] = 0x08E8,
202};
203
204enum spmi_regs {
205 SPMI_OP_ST_CTRL,
206 SPMI_GRP_ID_EN,
207 SPMI_OP_ST_STA,
208 SPMI_MST_SAMPL,
209 SPMI_MST_REQ_EN,
210 SPMI_REC_CTRL,
211 SPMI_REC0,
212 SPMI_REC1,
213 SPMI_REC2,
214 SPMI_REC3,
215 SPMI_REC4,
216 SPMI_MST_DBG,
217
218 /* MT8195 spmi regs */
219 SPMI_MST_RCS_CTRL,
220 SPMI_SLV_3_0_EINT,
221 SPMI_SLV_7_4_EINT,
222 SPMI_SLV_B_8_EINT,
223 SPMI_SLV_F_C_EINT,
224 SPMI_REC_CMD_DEC,
225 SPMI_DEC_DBG,
226};
227
228static const u32 mt6873_spmi_regs[] = {
229 [SPMI_OP_ST_CTRL] = 0x0000,
230 [SPMI_GRP_ID_EN] = 0x0004,
231 [SPMI_OP_ST_STA] = 0x0008,
232 [SPMI_MST_SAMPL] = 0x000c,
233 [SPMI_MST_REQ_EN] = 0x0010,
234 [SPMI_REC_CTRL] = 0x0040,
235 [SPMI_REC0] = 0x0044,
236 [SPMI_REC1] = 0x0048,
237 [SPMI_REC2] = 0x004c,
238 [SPMI_REC3] = 0x0050,
239 [SPMI_REC4] = 0x0054,
240 [SPMI_MST_DBG] = 0x00fc,
241};
242
243static const u32 mt8195_spmi_regs[] = {
244 [SPMI_OP_ST_CTRL] = 0x0000,
245 [SPMI_GRP_ID_EN] = 0x0004,
246 [SPMI_OP_ST_STA] = 0x0008,
247 [SPMI_MST_SAMPL] = 0x000C,
248 [SPMI_MST_REQ_EN] = 0x0010,
249 [SPMI_MST_RCS_CTRL] = 0x0014,
250 [SPMI_SLV_3_0_EINT] = 0x0020,
251 [SPMI_SLV_7_4_EINT] = 0x0024,
252 [SPMI_SLV_B_8_EINT] = 0x0028,
253 [SPMI_SLV_F_C_EINT] = 0x002C,
254 [SPMI_REC_CTRL] = 0x0040,
255 [SPMI_REC0] = 0x0044,
256 [SPMI_REC1] = 0x0048,
257 [SPMI_REC2] = 0x004C,
258 [SPMI_REC3] = 0x0050,
259 [SPMI_REC4] = 0x0054,
260 [SPMI_REC_CMD_DEC] = 0x005C,
261 [SPMI_DEC_DBG] = 0x00F8,
262 [SPMI_MST_DBG] = 0x00FC,
263};
264
265static u32 pmif_readl(struct pmif *arb, enum pmif_regs reg)
266{
267 return readl(addr: arb->base + arb->data->regs[reg]);
268}
269
270static void pmif_writel(struct pmif *arb, u32 val, enum pmif_regs reg)
271{
272 writel(val, addr: arb->base + arb->data->regs[reg]);
273}
274
275static void mtk_spmi_writel(struct pmif *arb, u32 val, enum spmi_regs reg)
276{
277 writel(val, addr: arb->spmimst_base + arb->data->spmimst_regs[reg]);
278}
279
280static bool pmif_is_fsm_vldclr(struct pmif *arb)
281{
282 u32 reg_rdata;
283
284 reg_rdata = pmif_readl(arb, reg: arb->chan.ch_sta);
285
286 return GET_SWINF(reg_rdata) == SWINF_WFVLDCLR;
287}
288
289static int pmif_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid)
290{
291 struct pmif *arb = spmi_controller_get_drvdata(ctrl);
292 u32 rdata, cmd;
293 int ret;
294
295 /* Check the opcode */
296 if (opc < SPMI_CMD_RESET || opc > SPMI_CMD_WAKEUP)
297 return -EINVAL;
298
299 cmd = opc - SPMI_CMD_RESET;
300
301 mtk_spmi_writel(arb, val: (cmd << 0x4) | sid, reg: SPMI_OP_ST_CTRL);
302 ret = readl_poll_timeout_atomic(arb->spmimst_base + arb->data->spmimst_regs[SPMI_OP_ST_STA],
303 rdata, (rdata & SPMI_OP_ST_BUSY) == SPMI_OP_ST_BUSY,
304 PMIF_DELAY_US, PMIF_TIMEOUT_US);
305 if (ret < 0)
306 dev_err(&ctrl->dev, "timeout, err = %d\n", ret);
307
308 return ret;
309}
310
311static int pmif_spmi_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
312 u16 addr, u8 *buf, size_t len)
313{
314 struct pmif *arb = spmi_controller_get_drvdata(ctrl);
315 struct ch_reg *inf_reg;
316 int ret;
317 u32 data, cmd;
318 unsigned long flags;
319
320 /* Check for argument validation. */
321 if (sid & ~0xf) {
322 dev_err(&ctrl->dev, "exceed the max slv id\n");
323 return -EINVAL;
324 }
325
326 if (len > 4) {
327 dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len);
328
329 return -EINVAL;
330 }
331
332 if (opc >= 0x60 && opc <= 0x7f)
333 opc = PMIF_CMD_REG;
334 else if ((opc >= 0x20 && opc <= 0x2f) || (opc >= 0x38 && opc <= 0x3f))
335 opc = PMIF_CMD_EXT_REG_LONG;
336 else
337 return -EINVAL;
338
339 raw_spin_lock_irqsave(&arb->lock, flags);
340 /* Wait for Software Interface FSM state to be IDLE. */
341 inf_reg = &arb->chan;
342 ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],
343 data, GET_SWINF(data) == SWINF_IDLE,
344 PMIF_DELAY_US, PMIF_TIMEOUT_US);
345 if (ret < 0) {
346 /* set channel ready if the data has transferred */
347 if (pmif_is_fsm_vldclr(arb))
348 pmif_writel(arb, val: 1, reg: inf_reg->ch_rdy);
349 raw_spin_unlock_irqrestore(&arb->lock, flags);
350 dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n");
351 return ret;
352 }
353
354 /* Send the command. */
355 cmd = (opc << 30) | (sid << 24) | ((len - 1) << 16) | addr;
356 pmif_writel(arb, val: cmd, reg: inf_reg->ch_send);
357 raw_spin_unlock_irqrestore(&arb->lock, flags);
358
359 /*
360 * Wait for Software Interface FSM state to be WFVLDCLR,
361 * read the data and clear the valid flag.
362 */
363 ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],
364 data, GET_SWINF(data) == SWINF_WFVLDCLR,
365 PMIF_DELAY_US, PMIF_TIMEOUT_US);
366 if (ret < 0) {
367 dev_err(&ctrl->dev, "failed to wait for SWINF_WFVLDCLR\n");
368 return ret;
369 }
370
371 data = pmif_readl(arb, reg: inf_reg->rdata);
372 memcpy(buf, &data, len);
373 pmif_writel(arb, val: 1, reg: inf_reg->ch_rdy);
374
375 return 0;
376}
377
378static int pmif_spmi_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,
379 u16 addr, const u8 *buf, size_t len)
380{
381 struct pmif *arb = spmi_controller_get_drvdata(ctrl);
382 struct ch_reg *inf_reg;
383 int ret;
384 u32 data, wdata, cmd;
385 unsigned long flags;
386
387 /* Check for argument validation. */
388 if (unlikely(sid & ~0xf)) {
389 dev_err(&ctrl->dev, "exceed the max slv id\n");
390 return -EINVAL;
391 }
392
393 if (len > 4) {
394 dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len);
395
396 return -EINVAL;
397 }
398
399 /* Check the opcode */
400 if (opc >= 0x40 && opc <= 0x5F)
401 opc = PMIF_CMD_REG;
402 else if ((opc <= 0xF) || (opc >= 0x30 && opc <= 0x37))
403 opc = PMIF_CMD_EXT_REG_LONG;
404 else if (opc >= 0x80)
405 opc = PMIF_CMD_REG_0;
406 else
407 return -EINVAL;
408
409 /* Set the write data. */
410 memcpy(&wdata, buf, len);
411
412 raw_spin_lock_irqsave(&arb->lock, flags);
413 /* Wait for Software Interface FSM state to be IDLE. */
414 inf_reg = &arb->chan;
415 ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],
416 data, GET_SWINF(data) == SWINF_IDLE,
417 PMIF_DELAY_US, PMIF_TIMEOUT_US);
418 if (ret < 0) {
419 /* set channel ready if the data has transferred */
420 if (pmif_is_fsm_vldclr(arb))
421 pmif_writel(arb, val: 1, reg: inf_reg->ch_rdy);
422 raw_spin_unlock_irqrestore(&arb->lock, flags);
423 dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n");
424 return ret;
425 }
426
427 pmif_writel(arb, val: wdata, reg: inf_reg->wdata);
428
429 /* Send the command. */
430 cmd = (opc << 30) | BIT(29) | (sid << 24) | ((len - 1) << 16) | addr;
431 pmif_writel(arb, val: cmd, reg: inf_reg->ch_send);
432 raw_spin_unlock_irqrestore(&arb->lock, flags);
433
434 return 0;
435}
436
437static const struct pmif_data mt6873_pmif_arb = {
438 .regs = mt6873_regs,
439 .spmimst_regs = mt6873_spmi_regs,
440 .soc_chan = 2,
441};
442
443static const struct pmif_data mt8195_pmif_arb = {
444 .regs = mt8195_regs,
445 .spmimst_regs = mt8195_spmi_regs,
446 .soc_chan = 2,
447};
448
449static int mtk_spmi_probe(struct platform_device *pdev)
450{
451 struct pmif *arb;
452 struct spmi_controller *ctrl;
453 int err, i;
454 u32 chan_offset;
455
456 ctrl = devm_spmi_controller_alloc(parent: &pdev->dev, size: sizeof(*arb));
457 if (IS_ERR(ptr: ctrl))
458 return PTR_ERR(ptr: ctrl);
459
460 arb = spmi_controller_get_drvdata(ctrl);
461 arb->data = device_get_match_data(dev: &pdev->dev);
462 if (!arb->data) {
463 dev_err(&pdev->dev, "Cannot get drv_data\n");
464 return -EINVAL;
465 }
466
467 arb->base = devm_platform_ioremap_resource_byname(pdev, name: "pmif");
468 if (IS_ERR(ptr: arb->base))
469 return PTR_ERR(ptr: arb->base);
470
471 arb->spmimst_base = devm_platform_ioremap_resource_byname(pdev, name: "spmimst");
472 if (IS_ERR(ptr: arb->spmimst_base))
473 return PTR_ERR(ptr: arb->spmimst_base);
474
475 arb->nclks = ARRAY_SIZE(pmif_clock_names);
476 for (i = 0; i < arb->nclks; i++)
477 arb->clks[i].id = pmif_clock_names[i];
478
479 err = clk_bulk_get(dev: &pdev->dev, num_clks: arb->nclks, clks: arb->clks);
480 if (err) {
481 dev_err(&pdev->dev, "Failed to get clocks: %d\n", err);
482 return err;
483 }
484
485 err = clk_bulk_prepare_enable(num_clks: arb->nclks, clks: arb->clks);
486 if (err) {
487 dev_err(&pdev->dev, "Failed to enable clocks: %d\n", err);
488 goto err_put_clks;
489 }
490
491 ctrl->cmd = pmif_arb_cmd;
492 ctrl->read_cmd = pmif_spmi_read_cmd;
493 ctrl->write_cmd = pmif_spmi_write_cmd;
494
495 chan_offset = PMIF_CHAN_OFFSET * arb->data->soc_chan;
496 arb->chan.ch_sta = PMIF_SWINF_0_STA + chan_offset;
497 arb->chan.wdata = PMIF_SWINF_0_WDATA_31_0 + chan_offset;
498 arb->chan.rdata = PMIF_SWINF_0_RDATA_31_0 + chan_offset;
499 arb->chan.ch_send = PMIF_SWINF_0_ACC + chan_offset;
500 arb->chan.ch_rdy = PMIF_SWINF_0_VLD_CLR + chan_offset;
501
502 raw_spin_lock_init(&arb->lock);
503
504 platform_set_drvdata(pdev, data: ctrl);
505
506 err = spmi_controller_add(ctrl);
507 if (err)
508 goto err_domain_remove;
509
510 return 0;
511
512err_domain_remove:
513 clk_bulk_disable_unprepare(num_clks: arb->nclks, clks: arb->clks);
514err_put_clks:
515 clk_bulk_put(num_clks: arb->nclks, clks: arb->clks);
516 return err;
517}
518
519static void mtk_spmi_remove(struct platform_device *pdev)
520{
521 struct spmi_controller *ctrl = platform_get_drvdata(pdev);
522 struct pmif *arb = spmi_controller_get_drvdata(ctrl);
523
524 spmi_controller_remove(ctrl);
525 clk_bulk_disable_unprepare(num_clks: arb->nclks, clks: arb->clks);
526 clk_bulk_put(num_clks: arb->nclks, clks: arb->clks);
527}
528
529static const struct of_device_id mtk_spmi_match_table[] = {
530 {
531 .compatible = "mediatek,mt6873-spmi",
532 .data = &mt6873_pmif_arb,
533 }, {
534 .compatible = "mediatek,mt8195-spmi",
535 .data = &mt8195_pmif_arb,
536 }, {
537 /* sentinel */
538 },
539};
540MODULE_DEVICE_TABLE(of, mtk_spmi_match_table);
541
542static struct platform_driver mtk_spmi_driver = {
543 .driver = {
544 .name = "spmi-mtk",
545 .of_match_table = mtk_spmi_match_table,
546 },
547 .probe = mtk_spmi_probe,
548 .remove_new = mtk_spmi_remove,
549};
550module_platform_driver(mtk_spmi_driver);
551
552MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");
553MODULE_DESCRIPTION("MediaTek SPMI Driver");
554MODULE_LICENSE("GPL");
555

source code of linux/drivers/spmi/spmi-mtk-pmif.c