summaryrefslogtreecommitdiff
path: root/target/linux/brcm47xx/patches-3.8/030-mtd-bcm47xxsflash-add-own-struct-for-abstrating-bus-.patch
blob: 2d2f11bf3423590a508397ee0a1ec73112d019b6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
--- a/drivers/mtd/devices/bcm47xxsflash.c
+++ b/drivers/mtd/devices/bcm47xxsflash.c
@@ -5,6 +5,8 @@
 #include <linux/platform_device.h>
 #include <linux/bcma/bcma.h>
 
+#include "bcm47xxsflash.h"
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Serial flash driver for BCMA bus");
 
@@ -13,26 +15,27 @@ static const char *probes[] = { "bcm47xx
 static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
 			      size_t *retlen, u_char *buf)
 {
-	struct bcma_sflash *sflash = mtd->priv;
+	struct bcm47xxsflash *b47s = mtd->priv;
 
 	/* Check address range */
 	if ((from + len) > mtd->size)
 		return -EINVAL;
 
-	memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(sflash->window + from),
+	memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from),
 		      len);
 
 	return len;
 }
 
-static void bcm47xxsflash_fill_mtd(struct bcma_sflash *sflash,
-				   struct mtd_info *mtd)
+static void bcm47xxsflash_fill_mtd(struct bcm47xxsflash *b47s)
 {
-	mtd->priv = sflash;
+	struct mtd_info *mtd = &b47s->mtd;
+
+	mtd->priv = b47s;
 	mtd->name = "bcm47xxsflash";
 	mtd->owner = THIS_MODULE;
 	mtd->type = MTD_ROM;
-	mtd->size = sflash->size;
+	mtd->size = b47s->size;
 	mtd->_read = bcm47xxsflash_read;
 
 	/* TODO: implement writing support and verify/change following code */
@@ -43,16 +46,23 @@ static void bcm47xxsflash_fill_mtd(struc
 static int bcm47xxsflash_probe(struct platform_device *pdev)
 {
 	struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
+	struct bcm47xxsflash *b47s;
 	int err;
 
-	sflash->mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
-	if (!sflash->mtd) {
+	b47s = kzalloc(sizeof(*b47s), GFP_KERNEL);
+	if (!b47s) {
 		err = -ENOMEM;
 		goto out;
 	}
-	bcm47xxsflash_fill_mtd(sflash, sflash->mtd);
+	sflash->priv = b47s;
+
+	b47s->window = sflash->window;
+	b47s->blocksize = sflash->blocksize;
+	b47s->numblocks = sflash->numblocks;
+	b47s->size = sflash->size;
+	bcm47xxsflash_fill_mtd(b47s);
 
-	err = mtd_device_parse_register(sflash->mtd, probes, NULL, NULL, 0);
+	err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0);
 	if (err) {
 		pr_err("Failed to register MTD device: %d\n", err);
 		goto err_dev_reg;
@@ -61,7 +71,7 @@ static int bcm47xxsflash_probe(struct pl
 	return 0;
 
 err_dev_reg:
-	kfree(sflash->mtd);
+	kfree(&b47s->mtd);
 out:
 	return err;
 }
@@ -69,9 +79,10 @@ out:
 static int bcm47xxsflash_remove(struct platform_device *pdev)
 {
 	struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
+	struct bcm47xxsflash *b47s = sflash->priv;
 
-	mtd_device_unregister(sflash->mtd);
-	kfree(sflash->mtd);
+	mtd_device_unregister(&b47s->mtd);
+	kfree(b47s);
 
 	return 0;
 }
--- /dev/null
+++ b/drivers/mtd/devices/bcm47xxsflash.h
@@ -0,0 +1,15 @@
+#ifndef __BCM47XXSFLASH_H
+#define __BCM47XXSFLASH_H
+
+#include <linux/mtd/mtd.h>
+
+struct bcm47xxsflash {
+	u32 window;
+	u32 blocksize;
+	u16 numblocks;
+	u32 size;
+
+	struct mtd_info mtd;
+};
+
+#endif /* BCM47XXSFLASH */
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -544,6 +544,7 @@ struct bcma_nflash {
 	bool boot;		/* This is the flash the SoC boots from */
 
 	struct mtd_info *mtd;
+	void *priv;
 };
 #endif