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sh: heartbeat: Support access size specification via resource flags.

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This permits the resource access size to be handed off through the
resource flags, which saves platforms from having to establish
platform data only to specify the register width.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-01-15 12:08:31 +09:00
parent 46c4e5daea
commit 10ab92d8c3
1 changed files with 17 additions and 5 deletions
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22
arch/sh/drivers/heartbeat.c
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@ -1,7 +1,7 @@
/*
* Generic heartbeat driver for regular LED banks
*
* Copyright (C) 2007 Paul Mundt
* Copyright (C) 2007 - 2010 Paul Mundt
*
* Most SH reference boards include a number of individual LEDs that can
* be independently controlled (either via a pre-defined hardware
@ -27,7 +27,7 @@
#include <asm/heartbeat.h>
#define DRV_NAME "heartbeat"
#define DRV_VERSION "0.1.1"
#define DRV_VERSION "0.1.2"
static unsigned char default_bit_pos[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
@ -98,7 +98,7 @@ static int heartbeat_drv_probe(struct platform_device *pdev)
return -ENOMEM;
}
hd->base = ioremap_nocache(res->start, res->end - res->start + 1);
hd->base = ioremap_nocache(res->start, resource_size(res));
if (unlikely(!hd->base)) {
dev_err(&pdev->dev, "ioremap failed\n");
@ -117,8 +117,20 @@ static int heartbeat_drv_probe(struct platform_device *pdev)
for (i = 0; i < hd->nr_bits; i++)
hd->mask |= (1 << hd->bit_pos[i]);
if (!hd->regsize)
hd->regsize = 8; /* default access size */
if (!hd->regsize) {
switch (res->flags & IORESOURCE_MEM_TYPE_MASK) {
case IORESOURCE_MEM_32BIT:
hd->regsize = 32;
break;
case IORESOURCE_MEM_16BIT:
hd->regsize = 16;
break;
case IORESOURCE_MEM_8BIT:
default:
hd->regsize = 8;
break;
}
}
setup_timer(&hd->timer, heartbeat_timer, (unsigned long)hd);
platform_set_drvdata(pdev, hd);