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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 16:42:43 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 16:42:43 -0400
commit2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc (patch)
treee35a625496acc6ac852846d40b8851186b9d1ac4 /drivers/rtc
parent44b7532b8b464f606053562400719c9c21276037 (diff)
parentce53895a5d24e0ee19fb92f56c17323fb4c9ab27 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (417 commits) MAINTAINERS: EB110ATX is not ebsa110 MAINTAINERS: update Eric Miao's email address and status fb: add support of LCD display controller on pxa168/910 (base layer) [ARM] 5552/1: ep93xx get_uart_rate(): use EP93XX_SYSCON_PWRCNT and EP93XX_SYSCON_PWRCN [ARM] pxa/sharpsl_pm: zaurus needs generic pxa suspend/resume routines [ARM] 5544/1: Trust PrimeCell resource sizes [ARM] pxa/sharpsl_pm: cleanup of gpio-related code. [ARM] pxa/sharpsl_pm: drop set_irq_type calls [ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one [ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific [ARM] sa1100: remove unused collie_pm.c [ARM] pxa: fix the conflicting non-static declarations of global_gpios[] [ARM] 5550/1: Add default configure file for w90p910 platform [ARM] 5549/1: Add clock api for w90p910 platform. [ARM] 5548/1: Add gpio api for w90p910 platform [ARM] 5551/1: Add multi-function pin api for w90p910 platform. [ARM] Make ARM_VIC_NR depend on ARM_VIC [ARM] 5546/1: ARM PL022 SSP/SPI driver v3 ARM: OMAP4: SMP: Update defconfig for OMAP4430 ARM: OMAP4: SMP: Enable SMP support for OMAP4430 ...
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-ep93xx.c149
-rw-r--r--drivers/rtc/rtc-pl030.c2
-rw-r--r--drivers/rtc/rtc-pl031.c3
3 files changed, 114 insertions, 40 deletions
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 aaf1f75fa293..457231bb1029 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -117,7 +117,7 @@ static int pl030_probe(struct amba_device *dev, struct amba_id *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 451fc13784d1..f41873f98f66 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -142,8 +142,7 @@ static int pl031_probe(struct amba_device *adev, struct amba_id *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;