1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Copyright (C) 2019 ASPEED Technology Inc. */
3 /* Copyright (C) 2019 IBM Corp. */
4
5 #include <linux/clk.h>
6 #include <linux/delay.h>
7 #include <linux/device.h>
8 #include <linux/io.h>
9 #include <linux/math64.h>
10 #include <linux/mmc/host.h>
11 #include <linux/module.h>
12 #include <linux/of_address.h>
13 #include <linux/of.h>
14 #include <linux/of_platform.h>
15 #include <linux/platform_device.h>
16 #include <linux/spinlock.h>
17
18 #include "sdhci-pltfm.h"
19
20 #define ASPEED_SDC_INFO 0x00
21 #define ASPEED_SDC_S1_MMC8 BIT(25)
22 #define ASPEED_SDC_S0_MMC8 BIT(24)
23 #define ASPEED_SDC_PHASE 0xf4
24 #define ASPEED_SDC_S1_PHASE_IN GENMASK(25, 21)
25 #define ASPEED_SDC_S0_PHASE_IN GENMASK(20, 16)
26 #define ASPEED_SDC_S1_PHASE_OUT GENMASK(15, 11)
27 #define ASPEED_SDC_S1_PHASE_IN_EN BIT(10)
28 #define ASPEED_SDC_S1_PHASE_OUT_EN GENMASK(9, 8)
29 #define ASPEED_SDC_S0_PHASE_OUT GENMASK(7, 3)
30 #define ASPEED_SDC_S0_PHASE_IN_EN BIT(2)
31 #define ASPEED_SDC_S0_PHASE_OUT_EN GENMASK(1, 0)
32 #define ASPEED_SDC_PHASE_MAX 31
33
34 /* SDIO{10,20} */
35 #define ASPEED_SDC_CAP1_1_8V (0 * 32 + 26)
36 /* SDIO{14,24} */
37 #define ASPEED_SDC_CAP2_SDR104 (1 * 32 + 1)
38
39 struct aspeed_sdc {
40 struct clk *clk;
41 struct resource *res;
42
43 spinlock_t lock;
44 void __iomem *regs;
45 };
46
47 struct aspeed_sdhci_tap_param {
48 bool valid;
49
50 #define ASPEED_SDHCI_TAP_PARAM_INVERT_CLK BIT(4)
51 u8 in;
52 u8 out;
53 };
54
55 struct aspeed_sdhci_tap_desc {
56 u32 tap_mask;
57 u32 enable_mask;
58 u8 enable_value;
59 };
60
61 struct aspeed_sdhci_phase_desc {
62 struct aspeed_sdhci_tap_desc in;
63 struct aspeed_sdhci_tap_desc out;
64 };
65
66 struct aspeed_sdhci_pdata {
67 unsigned int clk_div_start;
68 const struct aspeed_sdhci_phase_desc *phase_desc;
69 size_t nr_phase_descs;
70 };
71
72 struct aspeed_sdhci {
73 const struct aspeed_sdhci_pdata *pdata;
74 struct aspeed_sdc *parent;
75 u32 width_mask;
76 struct mmc_clk_phase_map phase_map;
77 const struct aspeed_sdhci_phase_desc *phase_desc;
78 };
79
80 /*
81 * The function sets the mirror register for updating
82 * capbilities of the current slot.
83 *
84 * slot | capability | caps_reg | mirror_reg
85 * -----|-------------|----------|------------
86 * 0 | CAP1_1_8V | SDIO140 | SDIO10
87 * 0 | CAP2_SDR104 | SDIO144 | SDIO14
88 * 1 | CAP1_1_8V | SDIO240 | SDIO20
89 * 1 | CAP2_SDR104 | SDIO244 | SDIO24
90 */
aspeed_sdc_set_slot_capability(struct sdhci_host * host,struct aspeed_sdc * sdc,int capability,bool enable,u8 slot)91 static void aspeed_sdc_set_slot_capability(struct sdhci_host *host, struct aspeed_sdc *sdc,
92 int capability, bool enable, u8 slot)
93 {
94 u32 mirror_reg_offset;
95 u32 cap_val;
96 u8 cap_reg;
97
98 if (slot > 1)
99 return;
100
101 cap_reg = capability / 32;
102 cap_val = sdhci_readl(host, 0x40 + (cap_reg * 4));
103 if (enable)
104 cap_val |= BIT(capability % 32);
105 else
106 cap_val &= ~BIT(capability % 32);
107 mirror_reg_offset = ((slot + 1) * 0x10) + (cap_reg * 4);
108 writel(cap_val, sdc->regs + mirror_reg_offset);
109 }
110
aspeed_sdc_configure_8bit_mode(struct aspeed_sdc * sdc,struct aspeed_sdhci * sdhci,bool bus8)111 static void aspeed_sdc_configure_8bit_mode(struct aspeed_sdc *sdc,
112 struct aspeed_sdhci *sdhci,
113 bool bus8)
114 {
115 u32 info;
116
117 /* Set/clear 8 bit mode */
118 spin_lock(&sdc->lock);
119 info = readl(sdc->regs + ASPEED_SDC_INFO);
120 if (bus8)
121 info |= sdhci->width_mask;
122 else
123 info &= ~sdhci->width_mask;
124 writel(info, sdc->regs + ASPEED_SDC_INFO);
125 spin_unlock(&sdc->lock);
126 }
127
128 static u32
aspeed_sdc_set_phase_tap(const struct aspeed_sdhci_tap_desc * desc,u8 tap,bool enable,u32 reg)129 aspeed_sdc_set_phase_tap(const struct aspeed_sdhci_tap_desc *desc,
130 u8 tap, bool enable, u32 reg)
131 {
132 reg &= ~(desc->enable_mask | desc->tap_mask);
133 if (enable) {
134 reg |= tap << __ffs(desc->tap_mask);
135 reg |= desc->enable_value << __ffs(desc->enable_mask);
136 }
137
138 return reg;
139 }
140
141 static void
aspeed_sdc_set_phase_taps(struct aspeed_sdc * sdc,const struct aspeed_sdhci_phase_desc * desc,const struct aspeed_sdhci_tap_param * taps)142 aspeed_sdc_set_phase_taps(struct aspeed_sdc *sdc,
143 const struct aspeed_sdhci_phase_desc *desc,
144 const struct aspeed_sdhci_tap_param *taps)
145 {
146 u32 reg;
147
148 spin_lock(&sdc->lock);
149 reg = readl(sdc->regs + ASPEED_SDC_PHASE);
150
151 reg = aspeed_sdc_set_phase_tap(&desc->in, taps->in, taps->valid, reg);
152 reg = aspeed_sdc_set_phase_tap(&desc->out, taps->out, taps->valid, reg);
153
154 writel(reg, sdc->regs + ASPEED_SDC_PHASE);
155 spin_unlock(&sdc->lock);
156 }
157
158 #define PICOSECONDS_PER_SECOND 1000000000000ULL
159 #define ASPEED_SDHCI_NR_TAPS 15
160 /* Measured value with *handwave* environmentals and static loading */
161 #define ASPEED_SDHCI_MAX_TAP_DELAY_PS 1253
aspeed_sdhci_phase_to_tap(struct device * dev,unsigned long rate_hz,int phase_deg)162 static int aspeed_sdhci_phase_to_tap(struct device *dev, unsigned long rate_hz,
163 int phase_deg)
164 {
165 u64 phase_period_ps;
166 u64 prop_delay_ps;
167 u64 clk_period_ps;
168 unsigned int tap;
169 u8 inverted;
170
171 phase_deg %= 360;
172
173 if (phase_deg >= 180) {
174 inverted = ASPEED_SDHCI_TAP_PARAM_INVERT_CLK;
175 phase_deg -= 180;
176 dev_dbg(dev,
177 "Inverting clock to reduce phase correction from %d to %d degrees\n",
178 phase_deg + 180, phase_deg);
179 } else {
180 inverted = 0;
181 }
182
183 prop_delay_ps = ASPEED_SDHCI_MAX_TAP_DELAY_PS / ASPEED_SDHCI_NR_TAPS;
184 clk_period_ps = div_u64(PICOSECONDS_PER_SECOND, (u64)rate_hz);
185 phase_period_ps = div_u64((u64)phase_deg * clk_period_ps, 360ULL);
186
187 tap = div_u64(phase_period_ps, prop_delay_ps);
188 if (tap > ASPEED_SDHCI_NR_TAPS) {
189 dev_dbg(dev,
190 "Requested out of range phase tap %d for %d degrees of phase compensation at %luHz, clamping to tap %d\n",
191 tap, phase_deg, rate_hz, ASPEED_SDHCI_NR_TAPS);
192 tap = ASPEED_SDHCI_NR_TAPS;
193 }
194
195 return inverted | tap;
196 }
197
198 static void
aspeed_sdhci_phases_to_taps(struct device * dev,unsigned long rate,const struct mmc_clk_phase * phases,struct aspeed_sdhci_tap_param * taps)199 aspeed_sdhci_phases_to_taps(struct device *dev, unsigned long rate,
200 const struct mmc_clk_phase *phases,
201 struct aspeed_sdhci_tap_param *taps)
202 {
203 taps->valid = phases->valid;
204
205 if (!phases->valid)
206 return;
207
208 taps->in = aspeed_sdhci_phase_to_tap(dev, rate, phases->in_deg);
209 taps->out = aspeed_sdhci_phase_to_tap(dev, rate, phases->out_deg);
210 }
211
212 static void
aspeed_sdhci_configure_phase(struct sdhci_host * host,unsigned long rate)213 aspeed_sdhci_configure_phase(struct sdhci_host *host, unsigned long rate)
214 {
215 struct aspeed_sdhci_tap_param _taps = {0}, *taps = &_taps;
216 struct mmc_clk_phase *params;
217 struct aspeed_sdhci *sdhci;
218 struct device *dev;
219
220 dev = mmc_dev(host->mmc);
221 sdhci = sdhci_pltfm_priv(sdhci_priv(host));
222
223 if (!sdhci->phase_desc)
224 return;
225
226 params = &sdhci->phase_map.phase[host->timing];
227 aspeed_sdhci_phases_to_taps(dev, rate, params, taps);
228 aspeed_sdc_set_phase_taps(sdhci->parent, sdhci->phase_desc, taps);
229 dev_dbg(dev,
230 "Using taps [%d, %d] for [%d, %d] degrees of phase correction at %luHz (%d)\n",
231 taps->in & ASPEED_SDHCI_NR_TAPS,
232 taps->out & ASPEED_SDHCI_NR_TAPS,
233 params->in_deg, params->out_deg, rate, host->timing);
234 }
235
aspeed_sdhci_set_clock(struct sdhci_host * host,unsigned int clock)236 static void aspeed_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
237 {
238 struct sdhci_pltfm_host *pltfm_host;
239 unsigned long parent, bus;
240 struct aspeed_sdhci *sdhci;
241 int div;
242 u16 clk;
243
244 pltfm_host = sdhci_priv(host);
245 sdhci = sdhci_pltfm_priv(pltfm_host);
246
247 parent = clk_get_rate(pltfm_host->clk);
248
249 sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
250
251 if (clock == 0)
252 return;
253
254 if (WARN_ON(clock > host->max_clk))
255 clock = host->max_clk;
256
257 /*
258 * Regarding the AST2600:
259 *
260 * If (EMMC12C[7:6], EMMC12C[15:8] == 0) then
261 * period of SDCLK = period of SDMCLK.
262 *
263 * If (EMMC12C[7:6], EMMC12C[15:8] != 0) then
264 * period of SDCLK = period of SDMCLK * 2 * (EMMC12C[7:6], EMMC[15:8])
265 *
266 * If you keep EMMC12C[7:6] = 0 and EMMC12C[15:8] as one-hot,
267 * 0x1/0x2/0x4/etc, you will find it is compatible to AST2400 or AST2500
268 *
269 * Keep the one-hot behaviour for backwards compatibility except for
270 * supporting the value 0 in (EMMC12C[7:6], EMMC12C[15:8]), and capture
271 * the 0-value capability in clk_div_start.
272 */
273 for (div = sdhci->pdata->clk_div_start; div < 256; div *= 2) {
274 bus = parent / div;
275 if (bus <= clock)
276 break;
277 }
278
279 div >>= 1;
280
281 clk = div << SDHCI_DIVIDER_SHIFT;
282
283 aspeed_sdhci_configure_phase(host, bus);
284
285 sdhci_enable_clk(host, clk);
286 }
287
aspeed_sdhci_get_max_clock(struct sdhci_host * host)288 static unsigned int aspeed_sdhci_get_max_clock(struct sdhci_host *host)
289 {
290 if (host->mmc->f_max)
291 return host->mmc->f_max;
292
293 return sdhci_pltfm_clk_get_max_clock(host);
294 }
295
aspeed_sdhci_set_bus_width(struct sdhci_host * host,int width)296 static void aspeed_sdhci_set_bus_width(struct sdhci_host *host, int width)
297 {
298 struct sdhci_pltfm_host *pltfm_priv;
299 struct aspeed_sdhci *aspeed_sdhci;
300 struct aspeed_sdc *aspeed_sdc;
301 u8 ctrl;
302
303 pltfm_priv = sdhci_priv(host);
304 aspeed_sdhci = sdhci_pltfm_priv(pltfm_priv);
305 aspeed_sdc = aspeed_sdhci->parent;
306
307 /* Set/clear 8-bit mode */
308 aspeed_sdc_configure_8bit_mode(aspeed_sdc, aspeed_sdhci,
309 width == MMC_BUS_WIDTH_8);
310
311 /* Set/clear 1 or 4 bit mode */
312 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
313 if (width == MMC_BUS_WIDTH_4)
314 ctrl |= SDHCI_CTRL_4BITBUS;
315 else
316 ctrl &= ~SDHCI_CTRL_4BITBUS;
317 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
318 }
319
aspeed_sdhci_readl(struct sdhci_host * host,int reg)320 static u32 aspeed_sdhci_readl(struct sdhci_host *host, int reg)
321 {
322 u32 val = readl(host->ioaddr + reg);
323
324 if (unlikely(reg == SDHCI_PRESENT_STATE) &&
325 (host->mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH))
326 val ^= SDHCI_CARD_PRESENT;
327
328 return val;
329 }
330
331 static const struct sdhci_ops aspeed_sdhci_ops = {
332 .read_l = aspeed_sdhci_readl,
333 .set_clock = aspeed_sdhci_set_clock,
334 .get_max_clock = aspeed_sdhci_get_max_clock,
335 .set_bus_width = aspeed_sdhci_set_bus_width,
336 .get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
337 .reset = sdhci_reset,
338 .set_uhs_signaling = sdhci_set_uhs_signaling,
339 };
340
341 static const struct sdhci_pltfm_data aspeed_sdhci_pdata = {
342 .ops = &aspeed_sdhci_ops,
343 .quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
344 };
345
aspeed_sdhci_calculate_slot(struct aspeed_sdhci * dev,struct resource * res)346 static inline int aspeed_sdhci_calculate_slot(struct aspeed_sdhci *dev,
347 struct resource *res)
348 {
349 resource_size_t delta;
350
351 if (!res || resource_type(res) != IORESOURCE_MEM)
352 return -EINVAL;
353
354 if (res->start < dev->parent->res->start)
355 return -EINVAL;
356
357 delta = res->start - dev->parent->res->start;
358 if (delta & (0x100 - 1))
359 return -EINVAL;
360
361 return (delta / 0x100) - 1;
362 }
363
aspeed_sdhci_probe(struct platform_device * pdev)364 static int aspeed_sdhci_probe(struct platform_device *pdev)
365 {
366 const struct aspeed_sdhci_pdata *aspeed_pdata;
367 struct device_node *np = pdev->dev.of_node;
368 struct sdhci_pltfm_host *pltfm_host;
369 struct aspeed_sdhci *dev;
370 struct sdhci_host *host;
371 struct resource *res;
372 int slot;
373 int ret;
374
375 aspeed_pdata = of_device_get_match_data(&pdev->dev);
376 if (!aspeed_pdata) {
377 dev_err(&pdev->dev, "Missing platform configuration data\n");
378 return -EINVAL;
379 }
380
381 host = sdhci_pltfm_init(pdev, &aspeed_sdhci_pdata, sizeof(*dev));
382 if (IS_ERR(host))
383 return PTR_ERR(host);
384
385 pltfm_host = sdhci_priv(host);
386 dev = sdhci_pltfm_priv(pltfm_host);
387 dev->pdata = aspeed_pdata;
388 dev->parent = dev_get_drvdata(pdev->dev.parent);
389
390 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
391 slot = aspeed_sdhci_calculate_slot(dev, res);
392
393 if (slot < 0)
394 return slot;
395 else if (slot >= 2)
396 return -EINVAL;
397
398 if (slot < dev->pdata->nr_phase_descs) {
399 dev->phase_desc = &dev->pdata->phase_desc[slot];
400 } else {
401 dev_info(&pdev->dev,
402 "Phase control not supported for slot %d\n", slot);
403 dev->phase_desc = NULL;
404 }
405
406 dev->width_mask = !slot ? ASPEED_SDC_S0_MMC8 : ASPEED_SDC_S1_MMC8;
407
408 dev_info(&pdev->dev, "Configured for slot %d\n", slot);
409
410 sdhci_get_of_property(pdev);
411
412 if (of_property_read_bool(np, "mmc-hs200-1_8v") ||
413 of_property_read_bool(np, "sd-uhs-sdr104")) {
414 aspeed_sdc_set_slot_capability(host, dev->parent, ASPEED_SDC_CAP1_1_8V,
415 true, slot);
416 }
417
418 if (of_property_read_bool(np, "sd-uhs-sdr104")) {
419 aspeed_sdc_set_slot_capability(host, dev->parent, ASPEED_SDC_CAP2_SDR104,
420 true, slot);
421 }
422
423 pltfm_host->clk = devm_clk_get(&pdev->dev, NULL);
424 if (IS_ERR(pltfm_host->clk))
425 return PTR_ERR(pltfm_host->clk);
426
427 ret = clk_prepare_enable(pltfm_host->clk);
428 if (ret) {
429 dev_err(&pdev->dev, "Unable to enable SDIO clock\n");
430 goto err_pltfm_free;
431 }
432
433 ret = mmc_of_parse(host->mmc);
434 if (ret)
435 goto err_sdhci_add;
436
437 if (dev->phase_desc)
438 mmc_of_parse_clk_phase(&pdev->dev, &dev->phase_map);
439
440 ret = sdhci_add_host(host);
441 if (ret)
442 goto err_sdhci_add;
443
444 return 0;
445
446 err_sdhci_add:
447 clk_disable_unprepare(pltfm_host->clk);
448 err_pltfm_free:
449 sdhci_pltfm_free(pdev);
450 return ret;
451 }
452
aspeed_sdhci_remove(struct platform_device * pdev)453 static void aspeed_sdhci_remove(struct platform_device *pdev)
454 {
455 struct sdhci_pltfm_host *pltfm_host;
456 struct sdhci_host *host;
457
458 host = platform_get_drvdata(pdev);
459 pltfm_host = sdhci_priv(host);
460
461 sdhci_remove_host(host, 0);
462
463 clk_disable_unprepare(pltfm_host->clk);
464
465 sdhci_pltfm_free(pdev);
466 }
467
468 static const struct aspeed_sdhci_pdata ast2400_sdhci_pdata = {
469 .clk_div_start = 2,
470 };
471
472 static const struct aspeed_sdhci_phase_desc ast2600_sdhci_phase[] = {
473 /* SDHCI/Slot 0 */
474 [0] = {
475 .in = {
476 .tap_mask = ASPEED_SDC_S0_PHASE_IN,
477 .enable_mask = ASPEED_SDC_S0_PHASE_IN_EN,
478 .enable_value = 1,
479 },
480 .out = {
481 .tap_mask = ASPEED_SDC_S0_PHASE_OUT,
482 .enable_mask = ASPEED_SDC_S0_PHASE_OUT_EN,
483 .enable_value = 3,
484 },
485 },
486 /* SDHCI/Slot 1 */
487 [1] = {
488 .in = {
489 .tap_mask = ASPEED_SDC_S1_PHASE_IN,
490 .enable_mask = ASPEED_SDC_S1_PHASE_IN_EN,
491 .enable_value = 1,
492 },
493 .out = {
494 .tap_mask = ASPEED_SDC_S1_PHASE_OUT,
495 .enable_mask = ASPEED_SDC_S1_PHASE_OUT_EN,
496 .enable_value = 3,
497 },
498 },
499 };
500
501 static const struct aspeed_sdhci_pdata ast2600_sdhci_pdata = {
502 .clk_div_start = 1,
503 .phase_desc = ast2600_sdhci_phase,
504 .nr_phase_descs = ARRAY_SIZE(ast2600_sdhci_phase),
505 };
506
507 static const struct of_device_id aspeed_sdhci_of_match[] = {
508 { .compatible = "aspeed,ast2400-sdhci", .data = &ast2400_sdhci_pdata, },
509 { .compatible = "aspeed,ast2500-sdhci", .data = &ast2400_sdhci_pdata, },
510 { .compatible = "aspeed,ast2600-sdhci", .data = &ast2600_sdhci_pdata, },
511 { }
512 };
513 MODULE_DEVICE_TABLE(of, aspeed_sdhci_of_match);
514
515 static struct platform_driver aspeed_sdhci_driver = {
516 .driver = {
517 .name = "sdhci-aspeed",
518 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
519 .of_match_table = aspeed_sdhci_of_match,
520 },
521 .probe = aspeed_sdhci_probe,
522 .remove = aspeed_sdhci_remove,
523 };
524
aspeed_sdc_probe(struct platform_device * pdev)525 static int aspeed_sdc_probe(struct platform_device *pdev)
526
527 {
528 struct device_node *parent, *child;
529 struct aspeed_sdc *sdc;
530 int ret;
531
532 sdc = devm_kzalloc(&pdev->dev, sizeof(*sdc), GFP_KERNEL);
533 if (!sdc)
534 return -ENOMEM;
535
536 spin_lock_init(&sdc->lock);
537
538 sdc->clk = devm_clk_get(&pdev->dev, NULL);
539 if (IS_ERR(sdc->clk))
540 return PTR_ERR(sdc->clk);
541
542 ret = clk_prepare_enable(sdc->clk);
543 if (ret) {
544 dev_err(&pdev->dev, "Unable to enable SDCLK\n");
545 return ret;
546 }
547
548 sdc->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &sdc->res);
549 if (IS_ERR(sdc->regs)) {
550 ret = PTR_ERR(sdc->regs);
551 goto err_clk;
552 }
553
554 dev_set_drvdata(&pdev->dev, sdc);
555
556 parent = pdev->dev.of_node;
557 for_each_available_child_of_node(parent, child) {
558 struct platform_device *cpdev;
559
560 cpdev = of_platform_device_create(child, NULL, &pdev->dev);
561 if (!cpdev) {
562 of_node_put(child);
563 ret = -ENODEV;
564 goto err_clk;
565 }
566 }
567
568 return 0;
569
570 err_clk:
571 clk_disable_unprepare(sdc->clk);
572 return ret;
573 }
574
aspeed_sdc_remove(struct platform_device * pdev)575 static void aspeed_sdc_remove(struct platform_device *pdev)
576 {
577 struct aspeed_sdc *sdc = dev_get_drvdata(&pdev->dev);
578
579 clk_disable_unprepare(sdc->clk);
580 }
581
582 static const struct of_device_id aspeed_sdc_of_match[] = {
583 { .compatible = "aspeed,ast2400-sd-controller", },
584 { .compatible = "aspeed,ast2500-sd-controller", },
585 { .compatible = "aspeed,ast2600-sd-controller", },
586 { }
587 };
588
589 MODULE_DEVICE_TABLE(of, aspeed_sdc_of_match);
590
591 static struct platform_driver aspeed_sdc_driver = {
592 .driver = {
593 .name = "sd-controller-aspeed",
594 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
595 .pm = &sdhci_pltfm_pmops,
596 .of_match_table = aspeed_sdc_of_match,
597 },
598 .probe = aspeed_sdc_probe,
599 .remove = aspeed_sdc_remove,
600 };
601
602 #if defined(CONFIG_MMC_SDHCI_OF_ASPEED_TEST)
603 #include "sdhci-of-aspeed-test.c"
604 #endif
605
aspeed_sdc_init(void)606 static int __init aspeed_sdc_init(void)
607 {
608 int rc;
609
610 rc = platform_driver_register(&aspeed_sdhci_driver);
611 if (rc < 0)
612 return rc;
613
614 rc = platform_driver_register(&aspeed_sdc_driver);
615 if (rc < 0)
616 platform_driver_unregister(&aspeed_sdhci_driver);
617
618 return rc;
619 }
620 module_init(aspeed_sdc_init);
621
aspeed_sdc_exit(void)622 static void __exit aspeed_sdc_exit(void)
623 {
624 platform_driver_unregister(&aspeed_sdc_driver);
625 platform_driver_unregister(&aspeed_sdhci_driver);
626 }
627 module_exit(aspeed_sdc_exit);
628
629 MODULE_DESCRIPTION("Driver for the ASPEED SD/SDIO/SDHCI Controllers");
630 MODULE_AUTHOR("Ryan Chen <ryan_chen@aspeedtech.com>");
631 MODULE_AUTHOR("Andrew Jeffery <andrew@aj.id.au>");
632 MODULE_LICENSE("GPL");
633