msm: pil: Make register code into a bus
Make struct pil_device into a wrapper around struct device so
that we can group all pil devices in the system onto one logical
pil bus. This will allow us to make 'online' sysfs nodes that
userspace can poll on in a later patch. Also, add an unregister
function so that devices can be removed if a module is removed.
Change-Id: I5e6c4286e3fb2149bdf2311fe23588364349eb54
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/arch/arm/mach-msm/pil-tzapps.c b/arch/arm/mach-msm/pil-tzapps.c
index 90ac1d9..b6e5343 100644
--- a/arch/arm/mach-msm/pil-tzapps.c
+++ b/arch/arm/mach-msm/pil-tzapps.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2010-2012, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -50,6 +50,7 @@
static int __devinit pil_tzapps_driver_probe(struct platform_device *pdev)
{
struct pil_desc *desc;
+ struct pil_device *pil;
if (pas_supported(PAS_TZAPPS) < 0)
return -ENOSYS;
@@ -61,13 +62,18 @@
desc->name = "tzapps";
desc->dev = &pdev->dev;
desc->ops = &pil_tzapps_ops;
- if (msm_pil_register(desc))
- return -EINVAL;
+ desc->owner = THIS_MODULE;
+ pil = msm_pil_register(desc);
+ if (IS_ERR(pil))
+ return PTR_ERR(pil);
+ platform_set_drvdata(pdev, pil);
return 0;
}
static int __devexit pil_tzapps_driver_exit(struct platform_device *pdev)
{
+ struct pil_device *pil = platform_get_drvdata(pdev);
+ msm_pil_unregister(pil);
return 0;
}