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authorMagnus Damm <damm@igel.co.jp>2009-04-15 10:50:04 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-04-19 13:06:22 +0900
commite475eedb09ee9a0fd855f3e923aa9af31c17d141 (patch)
tree603e6c83531b613d4551e3a711c36ec864fea9fd /drivers/clocksource/sh_cmt.c
parentaefe6475720bd5eb8aacbc881488f3aa65618562 (diff)
downloadop-kernel-dev-e475eedb09ee9a0fd855f3e923aa9af31c17d141.zip
op-kernel-dev-e475eedb09ee9a0fd855f3e923aa9af31c17d141.tar.gz
clocksource: sh_cmt earlytimer support
Add Early Platform Driver support to the sh_cmt driver using the earlytimer class. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/clocksource/sh_cmt.c')
-rw-r--r--drivers/clocksource/sh_cmt.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index 1c92c39..02bae39 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -566,9 +566,19 @@ static int sh_cmt_setup(struct sh_cmt_priv *p, struct platform_device *pdev)
static int __devinit sh_cmt_probe(struct platform_device *pdev)
{
struct sh_cmt_priv *p = platform_get_drvdata(pdev);
+ struct sh_cmt_config *cfg = pdev->dev.platform_data;
int ret;
- p = kmalloc(sizeof(*p), GFP_KERNEL);
+ if (p) {
+ pr_info("sh_cmt: %s kept as earlytimer\n", cfg->name);
+ return 0;
+ }
+
+ if (is_early_platform_device(pdev))
+ p = alloc_bootmem(sizeof(*p));
+ else
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
+
if (p == NULL) {
dev_err(&pdev->dev, "failed to allocate driver data\n");
return -ENOMEM;
@@ -576,7 +586,10 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev)
ret = sh_cmt_setup(p, pdev);
if (ret) {
- kfree(p);
+ if (is_early_platform_device(pdev))
+ free_bootmem(__pa(p), sizeof(*p));
+ else
+ kfree(p);
platform_set_drvdata(pdev, NULL);
}
@@ -606,6 +619,7 @@ static void __exit sh_cmt_exit(void)
platform_driver_unregister(&sh_cmt_device_driver);
}
+early_platform_init("earlytimer", &sh_cmt_device_driver);
module_init(sh_cmt_init);
module_exit(sh_cmt_exit);
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