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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:42:43 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:42:43 -0700 |
commit | 2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc (patch) | |
tree | e35a625496acc6ac852846d40b8851186b9d1ac4 /drivers/rtc | |
parent | 44b7532b8b464f606053562400719c9c21276037 (diff) | |
parent | ce53895a5d24e0ee19fb92f56c17323fb4c9ab27 (diff) | |
download | op-kernel-dev-2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc.zip op-kernel-dev-2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc.tar.gz |
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.c | 149 | ||||
-rw-r--r-- | drivers/rtc/rtc-pl030.c | 2 | ||||
-rw-r--r-- | drivers/rtc/rtc-pl031.c | 3 |
3 files changed, 114 insertions, 40 deletions
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c index f7a3283..551332e 100644 --- a/drivers/rtc/rtc-ep93xx.c +++ b/drivers/rtc/rtc-ep93xx.c @@ -12,32 +12,56 @@ #include <linux/module.h> #include <linux/rtc.h> #include <linux/platform_device.h> -#include <mach/hardware.h> +#include <linux/io.h> + +#define EP93XX_RTC_DATA 0x000 +#define EP93XX_RTC_MATCH 0x004 +#define EP93XX_RTC_STATUS 0x008 +#define EP93XX_RTC_STATUS_INTR (1<<0) +#define EP93XX_RTC_LOAD 0x00C +#define EP93XX_RTC_CONTROL 0x010 +#define EP93XX_RTC_CONTROL_MIE (1<<0) +#define EP93XX_RTC_SWCOMP 0x108 +#define EP93XX_RTC_SWCOMP_DEL_MASK 0x001f0000 +#define EP93XX_RTC_SWCOMP_DEL_SHIFT 16 +#define EP93XX_RTC_SWCOMP_INT_MASK 0x0000ffff +#define EP93XX_RTC_SWCOMP_INT_SHIFT 0 + +#define DRV_VERSION "0.3" -#define EP93XX_RTC_REG(x) (EP93XX_RTC_BASE + (x)) -#define EP93XX_RTC_DATA EP93XX_RTC_REG(0x0000) -#define EP93XX_RTC_LOAD EP93XX_RTC_REG(0x000C) -#define EP93XX_RTC_SWCOMP EP93XX_RTC_REG(0x0108) - -#define DRV_VERSION "0.2" +/* + * struct device dev.platform_data is used to store our private data + * because struct rtc_device does not have a variable to hold it. + */ +struct ep93xx_rtc { + void __iomem *mmio_base; +}; -static int ep93xx_get_swcomp(struct device *dev, unsigned short *preload, +static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload, unsigned short *delete) { - unsigned short comp = __raw_readl(EP93XX_RTC_SWCOMP); + struct ep93xx_rtc *ep93xx_rtc = dev->platform_data; + unsigned long comp; + + comp = __raw_readl(ep93xx_rtc->mmio_base + EP93XX_RTC_SWCOMP); if (preload) - *preload = comp & 0xffff; + *preload = (comp & EP93XX_RTC_SWCOMP_INT_MASK) + >> EP93XX_RTC_SWCOMP_INT_SHIFT; if (delete) - *delete = (comp >> 16) & 0x1f; + *delete = (comp & EP93XX_RTC_SWCOMP_DEL_MASK) + >> EP93XX_RTC_SWCOMP_DEL_SHIFT; return 0; } static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) { - unsigned long time = __raw_readl(EP93XX_RTC_DATA); + struct ep93xx_rtc *ep93xx_rtc = dev->platform_data; + unsigned long time; + + time = __raw_readl(ep93xx_rtc->mmio_base + EP93XX_RTC_DATA); rtc_time_to_tm(time, tm); return 0; @@ -45,7 +69,9 @@ static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs) { - __raw_writel(secs + 1, EP93XX_RTC_LOAD); + struct ep93xx_rtc *ep93xx_rtc = dev->platform_data; + + __raw_writel(secs + 1, ep93xx_rtc->mmio_base + EP93XX_RTC_LOAD); return 0; } @@ -53,7 +79,7 @@ static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq) { unsigned short preload, delete; - ep93xx_get_swcomp(dev, &preload, &delete); + ep93xx_rtc_get_swcomp(dev, &preload, &delete); seq_printf(seq, "preload\t\t: %d\n", preload); seq_printf(seq, "delete\t\t: %d\n", delete); @@ -67,54 +93,104 @@ static const struct rtc_class_ops ep93xx_rtc_ops = { .proc = ep93xx_rtc_proc, }; -static ssize_t ep93xx_sysfs_show_comp_preload(struct device *dev, +static ssize_t ep93xx_rtc_show_comp_preload(struct device *dev, struct device_attribute *attr, char *buf) { unsigned short preload; - ep93xx_get_swcomp(dev, &preload, NULL); + ep93xx_rtc_get_swcomp(dev, &preload, NULL); return sprintf(buf, "%d\n", preload); } -static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_sysfs_show_comp_preload, NULL); +static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_rtc_show_comp_preload, NULL); -static ssize_t ep93xx_sysfs_show_comp_delete(struct device *dev, +static ssize_t ep93xx_rtc_show_comp_delete(struct device *dev, struct device_attribute *attr, char *buf) { unsigned short delete; - ep93xx_get_swcomp(dev, NULL, &delete); + ep93xx_rtc_get_swcomp(dev, NULL, &delete); return sprintf(buf, "%d\n", delete); } -static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_sysfs_show_comp_delete, NULL); +static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_rtc_show_comp_delete, NULL); -static int __devinit ep93xx_rtc_probe(struct platform_device *dev) +static int __init ep93xx_rtc_probe(struct platform_device *pdev) { - struct rtc_device *rtc = rtc_device_register("ep93xx", - &dev->dev, &ep93xx_rtc_ops, THIS_MODULE); + struct ep93xx_rtc *ep93xx_rtc; + struct resource *res; + struct rtc_device *rtc; + int err; + + ep93xx_rtc = kzalloc(sizeof(struct ep93xx_rtc), GFP_KERNEL); + if (ep93xx_rtc == NULL) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res == NULL) + return -ENXIO; + + res = request_mem_region(res->start, resource_size(res), pdev->name); + if (res == NULL) + return -EBUSY; + + ep93xx_rtc->mmio_base = ioremap(res->start, resource_size(res)); + if (ep93xx_rtc->mmio_base == NULL) { + err = -ENXIO; + goto fail; + } + pdev->dev.platform_data = ep93xx_rtc; + + rtc = rtc_device_register(pdev->name, + &pdev->dev, &ep93xx_rtc_ops, THIS_MODULE); if (IS_ERR(rtc)) { - return PTR_ERR(rtc); + err = PTR_ERR(rtc); + goto fail; } - platform_set_drvdata(dev, rtc); + platform_set_drvdata(pdev, rtc); - device_create_file(&dev->dev, &dev_attr_comp_preload); - device_create_file(&dev->dev, &dev_attr_comp_delete); + err = device_create_file(&pdev->dev, &dev_attr_comp_preload); + if (err) + goto fail; + err = device_create_file(&pdev->dev, &dev_attr_comp_delete); + if (err) { + device_remove_file(&pdev->dev, &dev_attr_comp_preload); + goto fail; + } return 0; + +fail: + if (ep93xx_rtc->mmio_base) { + iounmap(ep93xx_rtc->mmio_base); + pdev->dev.platform_data = NULL; + } + release_mem_region(res->start, resource_size(res)); + return err; } -static int __devexit ep93xx_rtc_remove(struct platform_device *dev) +static int __exit ep93xx_rtc_remove(struct platform_device *pdev) { - struct rtc_device *rtc = platform_get_drvdata(dev); + struct rtc_device *rtc = platform_get_drvdata(pdev); + struct ep93xx_rtc *ep93xx_rtc = pdev->dev.platform_data; + struct resource *res; + + /* cleanup sysfs */ + device_remove_file(&pdev->dev, &dev_attr_comp_delete); + device_remove_file(&pdev->dev, &dev_attr_comp_preload); + + rtc_device_unregister(rtc); + + iounmap(ep93xx_rtc->mmio_base); + pdev->dev.platform_data = NULL; - if (rtc) - rtc_device_unregister(rtc); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(res->start, resource_size(res)); - platform_set_drvdata(dev, NULL); + platform_set_drvdata(pdev, NULL); return 0; } @@ -122,23 +198,22 @@ static int __devexit ep93xx_rtc_remove(struct platform_device *dev) /* work with hotplug and coldplug */ MODULE_ALIAS("platform:ep93xx-rtc"); -static struct platform_driver ep93xx_rtc_platform_driver = { +static struct platform_driver ep93xx_rtc_driver = { .driver = { .name = "ep93xx-rtc", .owner = THIS_MODULE, }, - .probe = ep93xx_rtc_probe, - .remove = __devexit_p(ep93xx_rtc_remove), + .remove = __exit_p(ep93xx_rtc_remove), }; static int __init ep93xx_rtc_init(void) { - return platform_driver_register(&ep93xx_rtc_platform_driver); + return platform_driver_probe(&ep93xx_rtc_driver, ep93xx_rtc_probe); } static void __exit ep93xx_rtc_exit(void) { - platform_driver_unregister(&ep93xx_rtc_platform_driver); + platform_driver_unregister(&ep93xx_rtc_driver); } MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index aaf1f75..457231b 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) goto err_rtc; } - rtc->base = ioremap(dev->res.start, SZ_4K); + rtc->base = ioremap(dev->res.start, resource_size(&dev->res)); if (!rtc->base) { ret = -ENOMEM; goto err_map; diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 451fc13..f41873f 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) goto out; } - ldata->base = ioremap(adev->res.start, - adev->res.end - adev->res.start + 1); + ldata->base = ioremap(adev->res.start, resource_size(&adev->res)); if (!ldata->base) { ret = -ENOMEM; goto out_no_remap; |