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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c 
 kernel/drivers/mmc/host/android-goldfish.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  *  Copyright 2007, Google Inc.
34  *  Copyright 2012, Intel Inc.
....@@ -7,10 +8,6 @@
78  *  Written by Tuukka Tikkanen and Juha Yrjölä <juha.yrjola@nokia.com>
89  *  Misc hacks here and there by Tony Lindgren <tony@atomide.com>
910  *  Other hacks (DMA, SD, etc) by David Brownell
10
- *
11
- * This program is free software; you can redistribute it and/or modify
12
- * it under the terms of the GNU General Public License version 2 as
13
- * published by the Free Software Foundation.
1411  */
1512 
1613 #include <linux/module.h>
....@@ -30,7 +27,6 @@
3027 #include <linux/mutex.h>
3128 #include <linux/scatterlist.h>
3229 #include <linux/mmc/mmc.h>
33
-#include <linux/mmc/sdio.h>
3430 #include <linux/mmc/host.h>
3531 #include <linux/mmc/card.h>
3632 
....@@ -113,7 +109,6 @@
113109 	struct mmc_request	*mrq;
114110 	struct mmc_command	*cmd;
115111 	struct mmc_data		*data;
116
-	struct mmc_host		*mmc;
117112 	struct device		*dev;
118113 	unsigned char		id; /* 16xx chips have 2 MMC blocks */
119114 	void			*virt_base;
....@@ -175,7 +170,7 @@
175170 		resptype = 3;
176171 		break;
177172 	default:
178
-		dev_err(mmc_dev(host->mmc),
173
+		dev_err(mmc_dev(mmc_from_priv(host)),
179174 			"Invalid response type: %04x\n", mmc_resp_type(cmd));
180175 		break;
181176 	}
....@@ -221,8 +216,8 @@
221216 					data->sg->length);
222217 		}
223218 		host->data->bytes_xfered += data->sg->length;
224
-		dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
225
-			     dma_data_dir);
219
+		dma_unmap_sg(mmc_dev(mmc_from_priv(host)), data->sg,
220
+			     host->sg_len, dma_data_dir);
226221 	}
227222 
228223 	host->data = NULL;
....@@ -236,7 +231,7 @@
236231 
237232 	if (!data->stop) {
238233 		host->mrq = NULL;
239
-		mmc_request_done(host->mmc, data->mrq);
234
+		mmc_request_done(mmc_from_priv(host), data->mrq);
240235 		return;
241236 	}
242237 
....@@ -278,7 +273,7 @@
278273 
279274 	if (host->data == NULL || cmd->error) {
280275 		host->mrq = NULL;
281
-		mmc_request_done(host->mmc, cmd->mrq);
276
+		mmc_request_done(mmc_from_priv(host), cmd->mrq);
282277 	}
283278 }
284279 
....@@ -313,7 +308,7 @@
313308 		struct mmc_request *mrq = host->mrq;
314309 		mrq->cmd->error = -ETIMEDOUT;
315310 		host->mrq = NULL;
316
-		mmc_request_done(host->mmc, mrq);
311
+		mmc_request_done(mmc_from_priv(host), mrq);
317312 	}
318313 
319314 	if (end_command)
....@@ -339,12 +334,13 @@
339334 		u32 state = GOLDFISH_MMC_READ(host, MMC_STATE);
340335 		pr_info("%s: Card detect now %d\n", __func__,
341336 			(state & MMC_STATE_INSERTED));
342
-		mmc_detect_change(host->mmc, 0);
337
+		mmc_detect_change(mmc_from_priv(host), 0);
343338 	}
344339 
345340 	if (!end_command && !end_transfer && !state_changed && !cmd_timeout) {
346341 		status = GOLDFISH_MMC_READ(host, MMC_INT_STATUS);
347
-		dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status);
342
+		dev_info(mmc_dev(mmc_from_priv(host)), "spurious irq 0x%04x\n",
343
+			 status);
348344 		if (status != 0) {
349345 			GOLDFISH_MMC_WRITE(host, MMC_INT_STATUS, status);
350346 			GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE, 0);
....@@ -383,7 +379,7 @@
383379 
384380 	dma_data_dir = mmc_get_dma_dir(data);
385381 
386
-	host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
382
+	host->sg_len = dma_map_sg(mmc_dev(mmc_from_priv(host)), data->sg,
387383 				  sg_len, dma_data_dir);
388384 	host->dma_done = 0;
389385 	host->dma_in_use = 1;
....@@ -407,14 +403,6 @@
407403 	host->mrq = req;
408404 	goldfish_mmc_prepare_data(host, req);
409405 	goldfish_mmc_start_command(host, req->cmd);
410
-
411
-	/*
412
-	 * This is to avoid accidentally being detected as an SDIO card
413
-	 * in mmc_attach_sdio().
414
-	 */
415
-	if (req->cmd->opcode == SD_IO_SEND_OP_COND &&
416
-	    req->cmd->flags == (MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR))
417
-		req->cmd->error = -EINVAL;
418406 }
419407 
420408 static void goldfish_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
....@@ -461,7 +449,6 @@
461449 	}
462450 
463451 	host = mmc_priv(mmc);
464
-	host->mmc = mmc;
465452 
466453 	pr_err("mmc: Mapping %lX to %lX\n", (long)res->start, (long)res->end);
467454 	host->reg_base = ioremap(res->start, resource_size(res));
....@@ -486,6 +473,7 @@
486473 	mmc->f_max = 24000000;
487474 	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
488475 	mmc->caps = MMC_CAP_4_BIT_DATA;
476
+	mmc->caps2 = MMC_CAP2_NO_SDIO;
489477 
490478 	/* Use scatterlist DMA to reduce per-transfer costs.
491479 	 * NOTE max_seg_size assumption that small blocks aren't
....@@ -508,8 +496,7 @@
508496 
509497 	ret = device_create_file(&pdev->dev, &dev_attr_cover_switch);
510498 	if (ret)
511
-		dev_warn(mmc_dev(host->mmc),
512
-			 "Unable to create sysfs attributes\n");
499
+		dev_warn(mmc_dev(mmc), "Unable to create sysfs attributes\n");
513500 
514501 	GOLDFISH_MMC_WRITE(host, MMC_SET_BUFFER, host->phys_base);
515502 	GOLDFISH_MMC_WRITE(host, MMC_INT_ENABLE,
....@@ -525,7 +512,7 @@
525512 dma_alloc_failed:
526513 	iounmap(host->reg_base);
527514 ioremap_failed:
528
-	mmc_free_host(host->mmc);
515
+	mmc_free_host(mmc);
529516 err_alloc_host_failed:
530517 	return ret;
531518 }
....@@ -533,14 +520,15 @@
533520 static int goldfish_mmc_remove(struct platform_device *pdev)
534521 {
535522 	struct goldfish_mmc_host *host = platform_get_drvdata(pdev);
523
+	struct mmc_host *mmc = mmc_from_priv(host);
536524 
537525 	BUG_ON(host == NULL);
538526 
539
-	mmc_remove_host(host->mmc);
527
+	mmc_remove_host(mmc);
540528 	free_irq(host->irq, host);
541529 	dma_free_coherent(&pdev->dev, BUFFER_SIZE, host->virt_base, host->phys_base);
542530 	iounmap(host->reg_base);
543
-	mmc_free_host(host->mmc);
531
+	mmc_free_host(mmc);
544532 	return 0;
545533 }
546534