forked from ~ljy/RK356X_SDK_RELEASE
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2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/drivers/mmc/host/omap_hsmmc.c
....@@ -30,7 +30,6 @@
3030 #include <linux/clk.h>
3131 #include <linux/of.h>
3232 #include <linux/of_irq.h>
33
-#include <linux/of_gpio.h>
3433 #include <linux/of_device.h>
3534 #include <linux/mmc/host.h>
3635 #include <linux/mmc/core.h>
....@@ -38,7 +37,6 @@
3837 #include <linux/mmc/slot-gpio.h>
3938 #include <linux/io.h>
4039 #include <linux/irq.h>
41
-#include <linux/gpio.h>
4240 #include <linux/regulator/consumer.h>
4341 #include <linux/pinctrl/consumer.h>
4442 #include <linux/pm_runtime.h>
....@@ -198,7 +196,6 @@
198196 	struct dma_chan		*rx_chan;
199197 	int			response_busy;
200198 	int			context_loss;
201
-	int			protect_card;
202199 	int			reqs_blocked;
203200 	int			req_in_progress;
204201 	unsigned long		clk_rate;
....@@ -207,16 +204,6 @@
207204 #define HSMMC_SDIO_IRQ_ENABLED	(1 << 1)        /* SDIO irq enabled */
208205 	struct omap_hsmmc_next	next_data;
209206 	struct	omap_hsmmc_platform_data	*pdata;
210
-
211
-	/* return MMC cover switch state, can be NULL if not supported.
212
-	 *
213
-	 * possible return values:
214
-	 *   0 - closed
215
-	 *   1 - open
216
-	 */
217
-	int (*get_cover_state)(struct device *dev);
218
-
219
-	int (*card_detect)(struct device *dev);
220207 };
221208 
222209 struct omap_mmc_of_data {
....@@ -225,20 +212,6 @@
225212 };
226213 
227214 static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host);
228
-
229
-static int omap_hsmmc_card_detect(struct device *dev)
230
-{
231
-	struct omap_hsmmc_host *host = dev_get_drvdata(dev);
232
-
233
-	return mmc_gpio_get_cd(host->mmc);
234
-}
235
-
236
-static int omap_hsmmc_get_cover_state(struct device *dev)
237
-{
238
-	struct omap_hsmmc_host *host = dev_get_drvdata(dev);
239
-
240
-	return mmc_gpio_get_cd(host->mmc);
241
-}
242215 
243216 static int omap_hsmmc_enable_supply(struct mmc_host *mmc)
244217 {
....@@ -480,38 +453,6 @@
480453 	ret = omap_hsmmc_disable_boot_regulators(host);
481454 	if (ret)
482455 		return ret;
483
-
484
-	return 0;
485
-}
486
-
487
-static irqreturn_t omap_hsmmc_cover_irq(int irq, void *dev_id);
488
-
489
-static int omap_hsmmc_gpio_init(struct mmc_host *mmc,
490
-				struct omap_hsmmc_host *host,
491
-				struct omap_hsmmc_platform_data *pdata)
492
-{
493
-	int ret;
494
-
495
-	if (gpio_is_valid(pdata->gpio_cod)) {
496
-		ret = mmc_gpio_request_cd(mmc, pdata->gpio_cod, 0);
497
-		if (ret)
498
-			return ret;
499
-
500
-		host->get_cover_state = omap_hsmmc_get_cover_state;
501
-		mmc_gpio_set_cd_isr(mmc, omap_hsmmc_cover_irq);
502
-	} else if (gpio_is_valid(pdata->gpio_cd)) {
503
-		ret = mmc_gpio_request_cd(mmc, pdata->gpio_cd, 0);
504
-		if (ret)
505
-			return ret;
506
-
507
-		host->card_detect = omap_hsmmc_card_detect;
508
-	}
509
-
510
-	if (gpio_is_valid(pdata->gpio_wp)) {
511
-		ret = mmc_gpio_request_ro(mmc, pdata->gpio_wp);
512
-		if (ret)
513
-			return ret;
514
-	}
515456 
516457 	return 0;
517458 }
....@@ -781,9 +722,6 @@
781722 	int reg = 0;
782723 	unsigned long timeout;
783724 
784
-	if (host->protect_card)
785
-		return;
786
-
787725 	disable_irq(host->irq);
788726 
789727 	OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
....@@ -803,29 +741,6 @@
803741 
804742 	enable_irq(host->irq);
805743 }
806
-
807
-static inline
808
-int omap_hsmmc_cover_is_closed(struct omap_hsmmc_host *host)
809
-{
810
-	int r = 1;
811
-
812
-	if (host->get_cover_state)
813
-		r = host->get_cover_state(host->dev);
814
-	return r;
815
-}
816
-
817
-static ssize_t
818
-omap_hsmmc_show_cover_switch(struct device *dev, struct device_attribute *attr,
819
-			   char *buf)
820
-{
821
-	struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev);
822
-	struct omap_hsmmc_host *host = mmc_priv(mmc);
823
-
824
-	return sprintf(buf, "%s\n",
825
-			omap_hsmmc_cover_is_closed(host) ? "closed" : "open");
826
-}
827
-
828
-static DEVICE_ATTR(cover_switch, S_IRUGO, omap_hsmmc_show_cover_switch, NULL);
829744 
830745 static ssize_t
831746 omap_hsmmc_show_slot_name(struct device *dev, struct device_attribute *attr,
....@@ -1199,8 +1114,7 @@
11991114 	int ret;
12001115 
12011116 	/* Disable the clocks */
1202
-	if (host->dbclk)
1203
-		clk_disable_unprepare(host->dbclk);
1117
+	clk_disable_unprepare(host->dbclk);
12041118 
12051119 	/* Turn the power off */
12061120 	ret = omap_hsmmc_set_power(host, 0);
....@@ -1208,8 +1122,7 @@
12081122 	/* Turn the power ON with given VDD 1.8 or 3.0v */
12091123 	if (!ret)
12101124 		ret = omap_hsmmc_set_power(host, 1);
1211
-	if (host->dbclk)
1212
-		clk_prepare_enable(host->dbclk);
1125
+	clk_prepare_enable(host->dbclk);
12131126 
12141127 	if (ret != 0)
12151128 		goto err;
....@@ -1245,44 +1158,6 @@
12451158 err:
12461159 	dev_err(mmc_dev(host->mmc), "Unable to switch operating voltage\n");
12471160 	return ret;
1248
-}
1249
-
1250
-/* Protect the card while the cover is open */
1251
-static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host)
1252
-{
1253
-	if (!host->get_cover_state)
1254
-		return;
1255
-
1256
-	host->reqs_blocked = 0;
1257
-	if (host->get_cover_state(host->dev)) {
1258
-		if (host->protect_card) {
1259
-			dev_info(host->dev, "%s: cover is closed, "
1260
-					 "card is now accessible\n",
1261
-					 mmc_hostname(host->mmc));
1262
-			host->protect_card = 0;
1263
-		}
1264
-	} else {
1265
-		if (!host->protect_card) {
1266
-			dev_info(host->dev, "%s: cover is open, "
1267
-					 "card is now inaccessible\n",
1268
-					 mmc_hostname(host->mmc));
1269
-			host->protect_card = 1;
1270
-		}
1271
-	}
1272
-}
1273
-
1274
-/*
1275
- * irq handler when (cell-phone) cover is mounted/removed
1276
- */
1277
-static irqreturn_t omap_hsmmc_cover_irq(int irq, void *dev_id)
1278
-{
1279
-	struct omap_hsmmc_host *host = dev_id;
1280
-
1281
-	sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch");
1282
-
1283
-	omap_hsmmc_protect_card(host);
1284
-	mmc_detect_change(host->mmc, (HZ * 200) / 1000);
1285
-	return IRQ_HANDLED;
12861161 }
12871162 
12881163 static void omap_hsmmc_dma_callback(void *param)
....@@ -1555,24 +1430,7 @@
15551430 
15561431 	BUG_ON(host->req_in_progress);
15571432 	BUG_ON(host->dma_ch != -1);
1558
-	if (host->protect_card) {
1559
-		if (host->reqs_blocked < 3) {
1560
-			/*
1561
-			 * Ensure the controller is left in a consistent
1562
-			 * state by resetting the command and data state
1563
-			 * machines.
1564
-			 */
1565
-			omap_hsmmc_reset_controller_fsm(host, SRD);
1566
-			omap_hsmmc_reset_controller_fsm(host, SRC);
1567
-			host->reqs_blocked += 1;
1568
-		}
1569
-		req->cmd->error = -EBADF;
1570
-		if (req->data)
1571
-			req->data->error = -EBADF;
1572
-		req->cmd->retries = 0;
1573
-		mmc_request_done(mmc, req);
1574
-		return;
1575
-	} else if (host->reqs_blocked)
1433
+	if (host->reqs_blocked)
15761434 		host->reqs_blocked = 0;
15771435 	WARN_ON(host->mrq != NULL);
15781436 	host->mrq = req;
....@@ -1646,23 +1504,11 @@
16461504 	omap_hsmmc_set_bus_mode(host);
16471505 }
16481506 
1649
-static int omap_hsmmc_get_cd(struct mmc_host *mmc)
1650
-{
1651
-	struct omap_hsmmc_host *host = mmc_priv(mmc);
1652
-
1653
-	if (!host->card_detect)
1654
-		return -ENOSYS;
1655
-	return host->card_detect(host->dev);
1656
-}
1657
-
16581507 static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card)
16591508 {
16601509 	struct omap_hsmmc_host *host = mmc_priv(mmc);
16611510 
1662
-	if (mmc_pdata(host)->init_card)
1663
-		mmc_pdata(host)->init_card(card);
1664
-	else if (card->type == MMC_TYPE_SDIO ||
1665
-		 card->type == MMC_TYPE_SD_COMBO) {
1511
+	if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
16661512 		struct device_node *np = mmc_dev(mmc)->of_node;
16671513 
16681514 		/*
....@@ -1757,12 +1603,6 @@
17571603 			ret = PTR_ERR(p);
17581604 			goto err_free_irq;
17591605 		}
1760
-		if (IS_ERR(pinctrl_lookup_state(p, PINCTRL_STATE_DEFAULT))) {
1761
-			dev_info(host->dev, "missing default pinctrl state\n");
1762
-			devm_pinctrl_put(p);
1763
-			ret = -EINVAL;
1764
-			goto err_free_irq;
1765
-		}
17661606 
17671607 		if (IS_ERR(pinctrl_lookup_state(p, PINCTRL_STATE_IDLE))) {
17681608 			dev_info(host->dev, "missing idle pinctrl state\n");
....@@ -1823,7 +1663,7 @@
18231663 	.pre_req = omap_hsmmc_pre_req,
18241664 	.request = omap_hsmmc_request,
18251665 	.set_ios = omap_hsmmc_set_ios,
1826
-	.get_cd = omap_hsmmc_get_cd,
1666
+	.get_cd = mmc_gpio_get_cd,
18271667 	.get_ro = mmc_gpio_get_ro,
18281668 	.init_card = omap_hsmmc_init_card,
18291669 	.enable_sdio_irq = omap_hsmmc_enable_sdio_irq,
....@@ -1831,7 +1671,7 @@
18311671 
18321672 #ifdef CONFIG_DEBUG_FS
18331673 
1834
-static int omap_hsmmc_regs_show(struct seq_file *s, void *data)
1674
+static int mmc_regs_show(struct seq_file *s, void *data)
18351675 {
18361676 	struct mmc_host *mmc = s->private;
18371677 	struct omap_hsmmc_host *host = mmc_priv(mmc);
....@@ -1870,17 +1710,7 @@
18701710 	return 0;
18711711 }
18721712 
1873
-static int omap_hsmmc_regs_open(struct inode *inode, struct file *file)
1874
-{
1875
-	return single_open(file, omap_hsmmc_regs_show, inode->i_private);
1876
-}
1877
-
1878
-static const struct file_operations mmc_regs_fops = {
1879
-	.open           = omap_hsmmc_regs_open,
1880
-	.read           = seq_read,
1881
-	.llseek         = seq_lseek,
1882
-	.release        = single_release,
1883
-};
1713
+DEFINE_SHOW_ATTRIBUTE(mmc_regs);
18841714 
18851715 static void omap_hsmmc_debugfs(struct mmc_host *mmc)
18861716 {
....@@ -1950,10 +1780,6 @@
19501780 	if (of_find_property(np, "ti,dual-volt", NULL))
19511781 		pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
19521782 
1953
-	pdata->gpio_cd = -EINVAL;
1954
-	pdata->gpio_cod = -EINVAL;
1955
-	pdata->gpio_wp = -EINVAL;
1956
-
19571783 	if (of_find_property(np, "ti,non-removable", NULL)) {
19581784 		pdata->nonremovable = true;
19591785 		pdata->no_regulator_off_init = true;
....@@ -2006,9 +1832,11 @@
20061832 	}
20071833 
20081834 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2009
-	irq = platform_get_irq(pdev, 0);
2010
-	if (res == NULL || irq < 0)
1835
+	if (!res)
20111836 		return -ENXIO;
1837
+	irq = platform_get_irq(pdev, 0);
1838
+	if (irq < 0)
1839
+		return irq;
20121840 
20131841 	base = devm_ioremap_resource(&pdev->dev, res);
20141842 	if (IS_ERR(base))
....@@ -2037,10 +1865,6 @@
20371865 	host->next_data.cookie = 1;
20381866 	host->pbias_enabled = 0;
20391867 	host->vqmmc_enabled = 0;
2040
-
2041
-	ret = omap_hsmmc_gpio_init(mmc, host, pdata);
2042
-	if (ret)
2043
-		goto err_gpio;
20441868 
20451869 	platform_set_drvdata(pdev, host);
20461870 
....@@ -2098,7 +1922,7 @@
20981922 	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
20991923 
21001924 	mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
2101
-		     MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_ERASE | MMC_CAP_CMD23;
1925
+		     MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_CMD23;
21021926 
21031927 	mmc->caps |= mmc_pdata(host)->caps;
21041928 	if (mmc->caps & MMC_CAP_8_BIT_DATA)
....@@ -2165,18 +1989,12 @@
21651989 	if (!ret)
21661990 		mmc->caps |= MMC_CAP_SDIO_IRQ;
21671991 
2168
-	omap_hsmmc_protect_card(host);
2169
-
2170
-	mmc_add_host(mmc);
1992
+	ret = mmc_add_host(mmc);
1993
+	if (ret)
1994
+		goto err_irq;
21711995 
21721996 	if (mmc_pdata(host)->name != NULL) {
21731997 		ret = device_create_file(&mmc->class_dev, &dev_attr_slot_name);
2174
-		if (ret < 0)
2175
-			goto err_slot_name;
2176
-	}
2177
-	if (host->get_cover_state) {
2178
-		ret = device_create_file(&mmc->class_dev,
2179
-					 &dev_attr_cover_switch);
21801998 		if (ret < 0)
21811999 			goto err_slot_name;
21822000 	}
....@@ -2198,10 +2016,8 @@
21982016 	pm_runtime_dont_use_autosuspend(host->dev);
21992017 	pm_runtime_put_sync(host->dev);
22002018 	pm_runtime_disable(host->dev);
2201
-	if (host->dbclk)
2202
-		clk_disable_unprepare(host->dbclk);
2019
+	clk_disable_unprepare(host->dbclk);
22032020 err1:
2204
-err_gpio:
22052021 	mmc_free_host(mmc);
22062022 err:
22072023 	return ret;
....@@ -2222,8 +2038,7 @@
22222038 	pm_runtime_put_sync(host->dev);
22232039 	pm_runtime_disable(host->dev);
22242040 	device_init_wakeup(&pdev->dev, false);
2225
-	if (host->dbclk)
2226
-		clk_disable_unprepare(host->dbclk);
2041
+	clk_disable_unprepare(host->dbclk);
22272042 
22282043 	mmc_free_host(host->mmc);
22292044 
....@@ -2248,8 +2063,7 @@
22482063 				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
22492064 	}
22502065 
2251
-	if (host->dbclk)
2252
-		clk_disable_unprepare(host->dbclk);
2066
+	clk_disable_unprepare(host->dbclk);
22532067 
22542068 	pm_runtime_put_sync(host->dev);
22552069 	return 0;
....@@ -2265,13 +2079,11 @@
22652079 
22662080 	pm_runtime_get_sync(host->dev);
22672081 
2268
-	if (host->dbclk)
2269
-		clk_prepare_enable(host->dbclk);
2082
+	clk_prepare_enable(host->dbclk);
22702083 
22712084 	if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
22722085 		omap_hsmmc_conf_bus_power(host);
22732086 
2274
-	omap_hsmmc_protect_card(host);
22752087 	pm_runtime_mark_last_busy(host->dev);
22762088 	pm_runtime_put_autosuspend(host->dev);
22772089 	return 0;
....@@ -2284,7 +2096,7 @@
22842096 	unsigned long flags;
22852097 	int ret = 0;
22862098 
2287
-	host = platform_get_drvdata(to_platform_device(dev));
2099
+	host = dev_get_drvdata(dev);
22882100 	omap_hsmmc_context_save(host);
22892101 	dev_dbg(dev, "disabled\n");
22902102 
....@@ -2325,7 +2137,7 @@
23252137 	struct omap_hsmmc_host *host;
23262138 	unsigned long flags;
23272139 
2328
-	host = platform_get_drvdata(to_platform_device(dev));
2140
+	host = dev_get_drvdata(dev);
23292141 	omap_hsmmc_context_restore(host);
23302142 	dev_dbg(dev, "enabled\n");
23312143 
....@@ -2333,14 +2145,14 @@
23332145 	if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
23342146 	    (host->flags & HSMMC_SDIO_IRQ_ENABLED)) {
23352147 
2336
-		pinctrl_pm_select_default_state(host->dev);
2148
+		pinctrl_select_default_state(host->dev);
23372149 
23382150 		/* irq lost, if pinmux incorrect */
23392151 		OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
23402152 		OMAP_HSMMC_WRITE(host->base, ISE, CIRQ_EN);
23412153 		OMAP_HSMMC_WRITE(host->base, IE, CIRQ_EN);
23422154 	} else {
2343
-		pinctrl_pm_select_default_state(host->dev);
2155
+		pinctrl_select_default_state(host->dev);
23442156 	}
23452157 	spin_unlock_irqrestore(&host->irq_lock, flags);
23462158 	return 0;
....@@ -2357,6 +2169,7 @@
23572169 	.remove		= omap_hsmmc_remove,
23582170 	.driver		= {
23592171 		.name = DRIVER_NAME,
2172
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
23602173 		.pm = &omap_hsmmc_dev_pm_ops,
23612174 		.of_match_table = of_match_ptr(omap_mmc_of_match),
23622175 	},