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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-28 12:05:35 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-28 12:05:35 -0400
commitd9089c296bdd82e6c1b7f82d04c11b5decde75e7 (patch)
tree6c2a3b8bc1b6f8b5930f6a20b099511dd19aa4ba /drivers/of/of_i2c.c
parentbda426f5310ffddcd463fe20f352609e84989514 (diff)
parent00df438e89a9003895948170e1abf64dd4665872 (diff)
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits) powerpc: Disable 64K hugetlb support when doing 64K SPU mappings powerpc/powermac: Fixup default serial port device for pmac_zilog powerpc/powermac: Use sane default baudrate for SCC debugging powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 64-bit powerpc: Show processor cache information in sysfs powerpc: Make core id information available to userspace powerpc: Make core sibling information available to userspace powerpc/vio: More fallout from dma_mapping_error API change ibmveth: Fix multiple errors with dma_mapping_error conversion powerpc/pseries: Fix CMO sysdev attribute API change fallout powerpc: Enable tracehook for the architecture powerpc: Add TIF_NOTIFY_RESUME support for tracehook powerpc: Add asm/syscall.h with the tracehook entry points powerpc: Make syscall tracing use tracehook.h helpers powerpc: Call tracehook_signal_handler() when setting up signal frames powerpc: Update cpu_sibling_maps dynamically powerpc: register_cpu_online should be __cpuinit powerpc: kill useless SMT code in prom_hold_cpus powerpc: Fix 8xx build failure powerpc: Fix vio build warnings ...
Diffstat (limited to 'drivers/of/of_i2c.c')
-rw-r--r--drivers/of/of_i2c.c64
1 files changed, 3 insertions, 61 deletions
diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c
index 344e1b03dd8b..6a98dc8aa30b 100644
--- a/drivers/of/of_i2c.c
+++ b/drivers/of/of_i2c.c
@@ -16,62 +16,6 @@
16#include <linux/of_i2c.h> 16#include <linux/of_i2c.h>
17#include <linux/module.h> 17#include <linux/module.h>
18 18
19struct i2c_driver_device {
20 char *of_device;
21 char *i2c_type;
22};
23
24static struct i2c_driver_device i2c_devices[] = {
25};
26
27static int of_find_i2c_driver(struct device_node *node,
28 struct i2c_board_info *info)
29{
30 int i, cplen;
31 const char *compatible;
32 const char *p;
33
34 /* 1. search for exception list entry */
35 for (i = 0; i < ARRAY_SIZE(i2c_devices); i++) {
36 if (!of_device_is_compatible(node, i2c_devices[i].of_device))
37 continue;
38 if (strlcpy(info->type, i2c_devices[i].i2c_type,
39 I2C_NAME_SIZE) >= I2C_NAME_SIZE)
40 return -ENOMEM;
41
42 return 0;
43 }
44
45 compatible = of_get_property(node, "compatible", &cplen);
46 if (!compatible)
47 return -ENODEV;
48
49 /* 2. search for linux,<i2c-type> entry */
50 p = compatible;
51 while (cplen > 0) {
52 if (!strncmp(p, "linux,", 6)) {
53 p += 6;
54 if (strlcpy(info->type, p,
55 I2C_NAME_SIZE) >= I2C_NAME_SIZE)
56 return -ENOMEM;
57 return 0;
58 }
59
60 i = strlen(p) + 1;
61 p += i;
62 cplen -= i;
63 }
64
65 /* 3. take fist compatible entry and strip manufacturer */
66 p = strchr(compatible, ',');
67 if (!p)
68 return -ENODEV;
69 p++;
70 if (strlcpy(info->type, p, I2C_NAME_SIZE) >= I2C_NAME_SIZE)
71 return -ENOMEM;
72 return 0;
73}
74
75void of_register_i2c_devices(struct i2c_adapter *adap, 19void of_register_i2c_devices(struct i2c_adapter *adap,
76 struct device_node *adap_node) 20 struct device_node *adap_node)
77{ 21{
@@ -83,6 +27,9 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
83 const u32 *addr; 27 const u32 *addr;
84 int len; 28 int len;
85 29
30 if (of_modalias_node(node, info.type, sizeof(info.type)) < 0)
31 continue;
32
86 addr = of_get_property(node, "reg", &len); 33 addr = of_get_property(node, "reg", &len);
87 if (!addr || len < sizeof(int) || *addr > (1 << 10) - 1) { 34 if (!addr || len < sizeof(int) || *addr > (1 << 10) - 1) {
88 printk(KERN_ERR 35 printk(KERN_ERR
@@ -92,11 +39,6 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
92 39
93 info.irq = irq_of_parse_and_map(node, 0); 40 info.irq = irq_of_parse_and_map(node, 0);
94 41
95 if (of_find_i2c_driver(node, &info) < 0) {
96 irq_dispose_mapping(info.irq);
97 continue;
98 }
99
100 info.addr = *addr; 42 info.addr = *addr;
101 43
102 request_module(info.type); 44 request_module(info.type);