AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

powerpc/qe: Implement QE driver for handling resume on MPC85xx

Browse Source 
So far the driver is used to reset QE upon resume, which is needed on
85xx. Later we can move some QE initialization steps into probe().

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Anton Vorontsov 2009-09-16 01:43:55 +04:00 committed by Kumar Gala
parent 4c1fba4429
commit fdfde24e10
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
arch/powerpc/sysdev/qe_lib/qe.c
View File

@ -27,6 +27,8 @@
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/crc32.h>
#include <linux/mod_devicetable.h>
#include <linux/of_platform.h>
#include <asm/irq.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@ -647,3 +649,35 @@ unsigned int qe_get_num_of_snums(void)
return num_of_snums;
}
EXPORT_SYMBOL(qe_get_num_of_snums);
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC_85xx)
static int qe_resume(struct of_device *ofdev)
{
if (!qe_alive_during_sleep())
qe_reset();
return 0;
}
static int qe_probe(struct of_device *ofdev, const struct of_device_id *id)
{
return 0;
}
static const struct of_device_id qe_ids[] = {
{ .compatible = "fsl,qe", },
{ },
};
static struct of_platform_driver qe_driver = {
.driver.name = "fsl-qe",
.match_table = qe_ids,
.probe = qe_probe,
.resume = qe_resume,
};
static int __init qe_drv_init(void)
{
return of_register_platform_driver(&qe_driver);
}
device_initcall(qe_drv_init);
#endif /* defined(CONFIG_SUSPEND) && defined(CONFIG_PPC_85xx) */