kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/drivers/mmc/host/pxamci.c
..
..
@@ -1,11 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  *  linux/drivers/mmc/host/pxa.c - PXA MMCI driver
3
4
  *
4
5
  *  Copyright (C) 2003 Russell King, All Rights Reserved.
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License version 2 as
8
- * published by the Free Software Foundation.
9
6
  *
10
7
  *  This hardware is really sick:
11
8
  *   - No way to clear interrupts.
..
..
@@ -30,13 +27,12 @@
30
27
 #include <linux/mmc/slot-gpio.h>
31
28
 #include <linux/io.h>
32
29
 #include <linux/regulator/consumer.h>
33
-#include <linux/gpio.h>
30
+#include <linux/gpio/consumer.h>
34
31
 #include <linux/gfp.h>
35
32
 #include <linux/of.h>
36
-#include <linux/of_gpio.h>
37
33
 #include <linux/of_device.h>
38
34
 
39
-#include <asm/sizes.h>
35
+#include <linux/sizes.h>
40
36
 
41
37
 #include <mach/hardware.h>
42
38
 #include <linux/platform_data/mmc-pxamci.h>
..
..
@@ -63,6 +59,8 @@
63
59
 	unsigned int		imask;
64
60
 	unsigned int		power_mode;
65
61
 	unsigned long		detect_delay_ms;
62
+	bool			use_ro_gpio;
63
+	struct gpio_desc	*power;
66
64
 	struct pxamci_platform_data *pdata;
67
65
 
68
66
 	struct mmc_request	*mrq;
..
..
@@ -101,16 +99,13 @@
101
99
 {
102
100
 	struct mmc_host *mmc = host->mmc;
103
101
 	struct regulator *supply = mmc->supply.vmmc;
104
-	int on;
105
102
 
106
103
 	if (!IS_ERR(supply))
107
104
 		return mmc_regulator_set_ocr(mmc, supply, vdd);
108
105
 
109
-	if (host->pdata &&
110
-	    gpio_is_valid(host->pdata->gpio_power)) {
111
-		on = ((1 << vdd) & host->pdata->ocr_mask);
112
-		gpio_set_value(host->pdata->gpio_power,
113
-			       !!on ^ host->pdata->gpio_power_invert);
106
+	if (host->power) {
107
+		bool on = !!((1 << vdd) & host->pdata->ocr_mask);
108
+		gpiod_set_value(host->power, on);
114
109
 	}
115
110
 
116
111
 	if (host->pdata && host->pdata->setpower)
..
..
@@ -432,7 +427,7 @@
432
427
 {
433
428
 	struct pxamci_host *host = mmc_priv(mmc);
434
429
 
435
-	if (host->pdata && gpio_is_valid(host->pdata->gpio_card_ro))
430
+	if (host->use_ro_gpio)
436
431
 		return mmc_gpio_get_ro(mmc);
437
432
 	if (host->pdata && host->pdata->get_ro)
438
433
 		return !!host->pdata->get_ro(mmc_dev(mmc));
..
..
@@ -653,7 +648,7 @@
653
648
 
654
649
 	ret = pxamci_of_init(pdev, mmc);
655
650
 	if (ret)
656
-		return ret;
651
+		goto out;
657
652
 
658
653
 	host = mmc_priv(mmc);
659
654
 	host->mmc = mmc;
..
..
@@ -677,7 +672,7 @@
677
672
 
678
673
 	ret = pxamci_init_ocr(host);
679
674
 	if (ret < 0)
680
-		return ret;
675
+		goto out;
681
676
 
682
677
 	mmc->caps = 0;
683
678
 	host->cmdat = 0;
..
..
@@ -715,67 +710,56 @@
715
710
 
716
711
 	platform_set_drvdata(pdev, mmc);
717
712
 
718
-	host->dma_chan_rx = dma_request_slave_channel(dev, "rx");
719
-	if (host->dma_chan_rx == NULL) {
713
+	host->dma_chan_rx = dma_request_chan(dev, "rx");
714
+	if (IS_ERR(host->dma_chan_rx)) {
720
715
 		dev_err(dev, "unable to request rx dma channel\n");
721
-		ret = -ENODEV;
716
+		ret = PTR_ERR(host->dma_chan_rx);
717
+		host->dma_chan_rx = NULL;
722
718
 		goto out;
723
719
 	}
724
720
 
725
-	host->dma_chan_tx = dma_request_slave_channel(dev, "tx");
726
-	if (host->dma_chan_tx == NULL) {
721
+	host->dma_chan_tx = dma_request_chan(dev, "tx");
722
+	if (IS_ERR(host->dma_chan_tx)) {
727
723
 		dev_err(dev, "unable to request tx dma channel\n");
728
-		ret = -ENODEV;
724
+		ret = PTR_ERR(host->dma_chan_tx);
725
+		host->dma_chan_tx = NULL;
729
726
 		goto out;
730
727
 	}
731
728
 
732
729
 	if (host->pdata) {
733
-		int gpio_cd = host->pdata->gpio_card_detect;
734
-		int gpio_ro = host->pdata->gpio_card_ro;
735
-		int gpio_power = host->pdata->gpio_power;
736
-
737
730
 		host->detect_delay_ms = host->pdata->detect_delay_ms;
738
731
 
739
-		if (gpio_is_valid(gpio_power)) {
740
-			ret = devm_gpio_request(dev, gpio_power,
741
-						"mmc card power");
742
-			if (ret) {
743
-				dev_err(dev,
744
-					"Failed requesting gpio_power %d\n",
745
-					gpio_power);
746
-				goto out;
747
-			}
748
-			gpio_direction_output(gpio_power,
749
-					      host->pdata->gpio_power_invert);
750
-		}
751
-
752
-		if (gpio_is_valid(gpio_ro)) {
753
-			ret = mmc_gpio_request_ro(mmc, gpio_ro);
754
-			if (ret) {
755
-				dev_err(dev,
756
-					"Failed requesting gpio_ro %d\n",
757
-					gpio_ro);
758
-				goto out;
759
-			} else {
760
-				mmc->caps2 |= host->pdata->gpio_card_ro_invert ?
761
-					0 : MMC_CAP2_RO_ACTIVE_HIGH;
762
-			}
763
-		}
764
-
765
-		if (gpio_is_valid(gpio_cd))
766
-			ret = mmc_gpio_request_cd(mmc, gpio_cd, 0);
767
-		if (ret) {
768
-			dev_err(dev, "Failed requesting gpio_cd %d\n",
769
-				gpio_cd);
732
+		host->power = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
733
+		if (IS_ERR(host->power)) {
734
+			ret = PTR_ERR(host->power);
735
+			dev_err(dev, "Failed requesting gpio_power\n");
770
736
 			goto out;
771
737
 		}
738
+
739
+		/* FIXME: should we pass detection delay to debounce? */
740
+		ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0);
741
+		if (ret && ret != -ENOENT) {
742
+			dev_err(dev, "Failed requesting gpio_cd\n");
743
+			goto out;
744
+		}
745
+
746
+		if (!host->pdata->gpio_card_ro_invert)
747
+			mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
748
+
749
+		ret = mmc_gpiod_request_ro(mmc, "wp", 0, 0);
750
+		if (ret && ret != -ENOENT) {
751
+			dev_err(dev, "Failed requesting gpio_ro\n");
752
+			goto out;
753
+		}
754
+		if (!ret)
755
+			host->use_ro_gpio = true;
772
756
 
773
757
 		if (host->pdata->init)
774
758
 			host->pdata->init(dev, pxamci_detect_irq, mmc);
775
759
 
776
-		if (gpio_is_valid(gpio_power) && host->pdata->setpower)
760
+		if (host->power && host->pdata->setpower)
777
761
 			dev_warn(dev, "gpio_power and setpower() both defined\n");
778
-		if (gpio_is_valid(gpio_ro) && host->pdata->get_ro)
762
+		if (host->use_ro_gpio && host->pdata->get_ro)
779
763
 			dev_warn(dev, "gpio_ro and get_ro() both defined\n");
780
764
 	}
781
765
 
..
..
@@ -828,6 +812,7 @@
828
812
 	.remove		= pxamci_remove,
829
813
 	.driver		= {
830
814
 		.name	= DRIVER_NAME,
815
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
831
816
 		.of_match_table = of_match_ptr(pxa_mmc_dt_ids),
832
817
 	},
833
818
 };