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authorDavid S. Miller <davem@davemloft.net>2009-06-15 06:02:23 -0400
committerDavid S. Miller <davem@davemloft.net>2009-06-15 06:02:23 -0400
commit9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch)
tree8d104ec2a459346b99413b0b77421ca7b9936c1a /drivers/rtc
parentca44d6e60f9de26281fda203f58b570e1748c015 (diff)
parent45e3e1935e2857c54783291107d33323b3ef33c8 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: Documentation/feature-removal-schedule.txt drivers/scsi/fcoe/fcoe.c net/core/drop_monitor.c net/core/net-traces.c
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/Kconfig2
-rw-r--r--drivers/rtc/rtc-ep93xx.c149
-rw-r--r--drivers/rtc/rtc-pl030.c4
-rw-r--r--drivers/rtc/rtc-pl031.c5
4 files changed, 117 insertions, 43 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 4e9851fc1746..277d35d232fa 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -692,7 +692,7 @@ config RTC_DRV_GENERIC
692 tristate "Generic RTC support" 692 tristate "Generic RTC support"
693 # Please consider writing a new RTC driver instead of using the generic 693 # Please consider writing a new RTC driver instead of using the generic
694 # RTC abstraction 694 # RTC abstraction
695 depends on PARISC || M68K || PPC 695 depends on PARISC || M68K || PPC || SUPERH32
696 help 696 help
697 Say Y or M here to enable RTC support on systems using the generic 697 Say Y or M here to enable RTC support on systems using the generic
698 RTC abstraction. If you do not know what you are doing, you should 698 RTC abstraction. If you do not know what you are doing, you should
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index f7a3283dd029..551332e4ed02 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -12,32 +12,56 @@
12#include <linux/module.h> 12#include <linux/module.h>
13#include <linux/rtc.h> 13#include <linux/rtc.h>
14#include <linux/platform_device.h> 14#include <linux/platform_device.h>
15#include <mach/hardware.h> 15#include <linux/io.h>
16
17#define EP93XX_RTC_DATA 0x000
18#define EP93XX_RTC_MATCH 0x004
19#define EP93XX_RTC_STATUS 0x008
20#define EP93XX_RTC_STATUS_INTR (1<<0)
21#define EP93XX_RTC_LOAD 0x00C
22#define EP93XX_RTC_CONTROL 0x010
23#define EP93XX_RTC_CONTROL_MIE (1<<0)
24#define EP93XX_RTC_SWCOMP 0x108
25#define EP93XX_RTC_SWCOMP_DEL_MASK 0x001f0000
26#define EP93XX_RTC_SWCOMP_DEL_SHIFT 16
27#define EP93XX_RTC_SWCOMP_INT_MASK 0x0000ffff
28#define EP93XX_RTC_SWCOMP_INT_SHIFT 0
29
30#define DRV_VERSION "0.3"
16 31
17#define EP93XX_RTC_REG(x) (EP93XX_RTC_BASE + (x)) 32/*
18#define EP93XX_RTC_DATA EP93XX_RTC_REG(0x0000) 33 * struct device dev.platform_data is used to store our private data
19#define EP93XX_RTC_LOAD EP93XX_RTC_REG(0x000C) 34 * because struct rtc_device does not have a variable to hold it.
20#define EP93XX_RTC_SWCOMP EP93XX_RTC_REG(0x0108) 35 */
21 36struct ep93xx_rtc {
22#define DRV_VERSION "0.2" 37 void __iomem *mmio_base;
38};
23 39
24static int ep93xx_get_swcomp(struct device *dev, unsigned short *preload, 40static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload,
25 unsigned short *delete) 41 unsigned short *delete)
26{ 42{
27 unsigned short comp = __raw_readl(EP93XX_RTC_SWCOMP); 43 struct ep93xx_rtc *ep93xx_rtc = dev->platform_data;
44 unsigned long comp;
45
46 comp = __raw_readl(ep93xx_rtc->mmio_base + EP93XX_RTC_SWCOMP);
28 47
29 if (preload) 48 if (preload)
30 *preload = comp & 0xffff; 49 *preload = (comp & EP93XX_RTC_SWCOMP_INT_MASK)
50 >> EP93XX_RTC_SWCOMP_INT_SHIFT;
31 51
32 if (delete) 52 if (delete)
33 *delete = (comp >> 16) & 0x1f; 53 *delete = (comp & EP93XX_RTC_SWCOMP_DEL_MASK)
54 >> EP93XX_RTC_SWCOMP_DEL_SHIFT;
34 55
35 return 0; 56 return 0;
36} 57}
37 58
38static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) 59static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm)
39{ 60{
40 unsigned long time = __raw_readl(EP93XX_RTC_DATA); 61 struct ep93xx_rtc *ep93xx_rtc = dev->platform_data;
62 unsigned long time;
63
64 time = __raw_readl(ep93xx_rtc->mmio_base + EP93XX_RTC_DATA);
41 65
42 rtc_time_to_tm(time, tm); 66 rtc_time_to_tm(time, tm);
43 return 0; 67 return 0;
@@ -45,7 +69,9 @@ static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm)
45 69
46static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs) 70static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs)
47{ 71{
48 __raw_writel(secs + 1, EP93XX_RTC_LOAD); 72 struct ep93xx_rtc *ep93xx_rtc = dev->platform_data;
73
74 __raw_writel(secs + 1, ep93xx_rtc->mmio_base + EP93XX_RTC_LOAD);
49 return 0; 75 return 0;
50} 76}
51 77
@@ -53,7 +79,7 @@ static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq)
53{ 79{
54 unsigned short preload, delete; 80 unsigned short preload, delete;
55 81
56 ep93xx_get_swcomp(dev, &preload, &delete); 82 ep93xx_rtc_get_swcomp(dev, &preload, &delete);
57 83
58 seq_printf(seq, "preload\t\t: %d\n", preload); 84 seq_printf(seq, "preload\t\t: %d\n", preload);
59 seq_printf(seq, "delete\t\t: %d\n", delete); 85 seq_printf(seq, "delete\t\t: %d\n", delete);
@@ -67,54 +93,104 @@ static const struct rtc_class_ops ep93xx_rtc_ops = {
67 .proc = ep93xx_rtc_proc, 93 .proc = ep93xx_rtc_proc,
68}; 94};
69 95
70static ssize_t ep93xx_sysfs_show_comp_preload(struct device *dev, 96static ssize_t ep93xx_rtc_show_comp_preload(struct device *dev,
71 struct device_attribute *attr, char *buf) 97 struct device_attribute *attr, char *buf)
72{ 98{
73 unsigned short preload; 99 unsigned short preload;
74 100
75 ep93xx_get_swcomp(dev, &preload, NULL); 101 ep93xx_rtc_get_swcomp(dev, &preload, NULL);
76 102
77 return sprintf(buf, "%d\n", preload); 103 return sprintf(buf, "%d\n", preload);
78} 104}
79static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_sysfs_show_comp_preload, NULL); 105static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_rtc_show_comp_preload, NULL);
80 106
81static ssize_t ep93xx_sysfs_show_comp_delete(struct device *dev, 107static ssize_t ep93xx_rtc_show_comp_delete(struct device *dev,
82 struct device_attribute *attr, char *buf) 108 struct device_attribute *attr, char *buf)
83{ 109{
84 unsigned short delete; 110 unsigned short delete;
85 111
86 ep93xx_get_swcomp(dev, NULL, &delete); 112 ep93xx_rtc_get_swcomp(dev, NULL, &delete);
87 113
88 return sprintf(buf, "%d\n", delete); 114 return sprintf(buf, "%d\n", delete);
89} 115}
90static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_sysfs_show_comp_delete, NULL); 116static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_rtc_show_comp_delete, NULL);
91 117
92 118
93static int __devinit ep93xx_rtc_probe(struct platform_device *dev) 119static int __init ep93xx_rtc_probe(struct platform_device *pdev)
94{ 120{
95 struct rtc_device *rtc = rtc_device_register("ep93xx", 121 struct ep93xx_rtc *ep93xx_rtc;
96 &dev->dev, &ep93xx_rtc_ops, THIS_MODULE); 122 struct resource *res;
123 struct rtc_device *rtc;
124 int err;
125
126 ep93xx_rtc = kzalloc(sizeof(struct ep93xx_rtc), GFP_KERNEL);
127 if (ep93xx_rtc == NULL)
128 return -ENOMEM;
129
130 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
131 if (res == NULL)
132 return -ENXIO;
133
134 res = request_mem_region(res->start, resource_size(res), pdev->name);
135 if (res == NULL)
136 return -EBUSY;
137
138 ep93xx_rtc->mmio_base = ioremap(res->start, resource_size(res));
139 if (ep93xx_rtc->mmio_base == NULL) {
140 err = -ENXIO;
141 goto fail;
142 }
97 143
144 pdev->dev.platform_data = ep93xx_rtc;
145
146 rtc = rtc_device_register(pdev->name,
147 &pdev->dev, &ep93xx_rtc_ops, THIS_MODULE);
98 if (IS_ERR(rtc)) { 148 if (IS_ERR(rtc)) {
99 return PTR_ERR(rtc); 149 err = PTR_ERR(rtc);
150 goto fail;
100 } 151 }
101 152
102 platform_set_drvdata(dev, rtc); 153 platform_set_drvdata(pdev, rtc);
103 154
104 device_create_file(&dev->dev, &dev_attr_comp_preload); 155 err = device_create_file(&pdev->dev, &dev_attr_comp_preload);
105 device_create_file(&dev->dev, &dev_attr_comp_delete); 156 if (err)
157 goto fail;
158 err = device_create_file(&pdev->dev, &dev_attr_comp_delete);
159 if (err) {
160 device_remove_file(&pdev->dev, &dev_attr_comp_preload);
161 goto fail;
162 }
106 163
107 return 0; 164 return 0;
165
166fail:
167 if (ep93xx_rtc->mmio_base) {
168 iounmap(ep93xx_rtc->mmio_base);
169 pdev->dev.platform_data = NULL;
170 }
171 release_mem_region(res->start, resource_size(res));
172 return err;
108} 173}
109 174
110static int __devexit ep93xx_rtc_remove(struct platform_device *dev) 175static int __exit ep93xx_rtc_remove(struct platform_device *pdev)
111{ 176{
112 struct rtc_device *rtc = platform_get_drvdata(dev); 177 struct rtc_device *rtc = platform_get_drvdata(pdev);
178 struct ep93xx_rtc *ep93xx_rtc = pdev->dev.platform_data;
179 struct resource *res;
180
181 /* cleanup sysfs */
182 device_remove_file(&pdev->dev, &dev_attr_comp_delete);
183 device_remove_file(&pdev->dev, &dev_attr_comp_preload);
184
185 rtc_device_unregister(rtc);
186
187 iounmap(ep93xx_rtc->mmio_base);
188 pdev->dev.platform_data = NULL;
113 189
114 if (rtc) 190 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
115 rtc_device_unregister(rtc); 191 release_mem_region(res->start, resource_size(res));
116 192
117 platform_set_drvdata(dev, NULL); 193 platform_set_drvdata(pdev, NULL);
118 194
119 return 0; 195 return 0;
120} 196}
@@ -122,23 +198,22 @@ static int __devexit ep93xx_rtc_remove(struct platform_device *dev)
122/* work with hotplug and coldplug */ 198/* work with hotplug and coldplug */
123MODULE_ALIAS("platform:ep93xx-rtc"); 199MODULE_ALIAS("platform:ep93xx-rtc");
124 200
125static struct platform_driver ep93xx_rtc_platform_driver = { 201static struct platform_driver ep93xx_rtc_driver = {
126 .driver = { 202 .driver = {
127 .name = "ep93xx-rtc", 203 .name = "ep93xx-rtc",
128 .owner = THIS_MODULE, 204 .owner = THIS_MODULE,
129 }, 205 },
130 .probe = ep93xx_rtc_probe, 206 .remove = __exit_p(ep93xx_rtc_remove),
131 .remove = __devexit_p(ep93xx_rtc_remove),
132}; 207};
133 208
134static int __init ep93xx_rtc_init(void) 209static int __init ep93xx_rtc_init(void)
135{ 210{
136 return platform_driver_register(&ep93xx_rtc_platform_driver); 211 return platform_driver_probe(&ep93xx_rtc_driver, ep93xx_rtc_probe);
137} 212}
138 213
139static void __exit ep93xx_rtc_exit(void) 214static void __exit ep93xx_rtc_exit(void)
140{ 215{
141 platform_driver_unregister(&ep93xx_rtc_platform_driver); 216 platform_driver_unregister(&ep93xx_rtc_driver);
142} 217}
143 218
144MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); 219MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index 826153552157..457231bb1029 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -102,7 +102,7 @@ static const struct rtc_class_ops pl030_ops = {
102 .set_alarm = pl030_set_alarm, 102 .set_alarm = pl030_set_alarm,
103}; 103};
104 104
105static int pl030_probe(struct amba_device *dev, void *id) 105static int pl030_probe(struct amba_device *dev, struct amba_id *id)
106{ 106{
107 struct pl030_rtc *rtc; 107 struct pl030_rtc *rtc;
108 int ret; 108 int ret;
@@ -117,7 +117,7 @@ static int pl030_probe(struct amba_device *dev, void *id)
117 goto err_rtc; 117 goto err_rtc;
118 } 118 }
119 119
120 rtc->base = ioremap(dev->res.start, SZ_4K); 120 rtc->base = ioremap(dev->res.start, resource_size(&dev->res));
121 if (!rtc->base) { 121 if (!rtc->base) {
122 ret = -ENOMEM; 122 ret = -ENOMEM;
123 goto err_map; 123 goto err_map;
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 333eec689d2f..f41873f98f66 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -127,7 +127,7 @@ static int pl031_remove(struct amba_device *adev)
127 return 0; 127 return 0;
128} 128}
129 129
130static int pl031_probe(struct amba_device *adev, void *id) 130static int pl031_probe(struct amba_device *adev, struct amba_id *id)
131{ 131{
132 int ret; 132 int ret;
133 struct pl031_local *ldata; 133 struct pl031_local *ldata;
@@ -142,8 +142,7 @@ static int pl031_probe(struct amba_device *adev, void *id)
142 goto out; 142 goto out;
143 } 143 }
144 144
145 ldata->base = ioremap(adev->res.start, 145 ldata->base = ioremap(adev->res.start, resource_size(&adev->res));
146 adev->res.end - adev->res.start + 1);
147 if (!ldata->base) { 146 if (!ldata->base) {
148 ret = -ENOMEM; 147 ret = -ENOMEM;
149 goto out_no_remap; 148 goto out_no_remap;