lkml.org 
[lkml]   [2011]   [Jun]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] ARM mxs: adjust pwm resources to what the driver expects
Date
The PWMs on i.MX23/28 have almost seperated register spaces
but share a common enable register. To reflect this register
a parent device to the PWMs which handles the enable register.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/mach-mxs/devices/platform-mxs-pwm.c | 32 +++++++++++++++++++++++--
1 files changed, 29 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-mxs/devices/platform-mxs-pwm.c b/arch/arm/mach-mxs/devices/platform-mxs-pwm.c
index 680f5a9..36580b7 100644
--- a/arch/arm/mach-mxs/devices/platform-mxs-pwm.c
+++ b/arch/arm/mach-mxs/devices/platform-mxs-pwm.c
@@ -9,14 +9,40 @@
#include <asm/sizes.h>
#include <mach/devices-common.h>

+static struct platform_device *__init mxs_add_pwm_core(resource_size_t iobase)
+{
+ struct resource res = {
+ .flags = IORESOURCE_MEM,
+ .start = iobase,
+ .end = iobase + 0xff,
+ };
+
+ return mxs_add_platform_device("mxs-pwm-core", 0, &res, 1, NULL, 0);
+}
+
struct platform_device *__init mxs_add_mxs_pwm(resource_size_t iobase, int id)
{
+ struct resource *r;
+
+ static struct platform_device *pwm_core;
struct resource res = {
.flags = IORESOURCE_MEM,
+ .start = iobase + 0x10 + 0x20 * id,
+ .end = iobase + 0x10 + 0x20 * id + 0x1f,
};

- res.start = iobase + 0x10 + 0x20 * id;
- res.end = res.start + 0x1f;
+ if (!pwm_core) {
+ pwm_core = mxs_add_pwm_core(iobase);
+ if (!pwm_core)
+ return NULL;
+ }
+
+ r = platform_get_resource(pwm_core, IORESOURCE_MEM, 0);
+ if (!r)
+ return NULL;
+
+ res.parent = r;

- return mxs_add_platform_device("mxs-pwm", id, &res, 1, NULL, 0);
+ return platform_device_register_resndata(&pwm_core->dev, "mxs-pwm",
+ id, &res, 1, NULL, 0);
}
--
1.7.5.3


\
 
 \ /
  Last update: 2011-06-30 12:45    [from the cache]
©2003-2011 Jasper Spaans