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ARM: OMAP2+: hwmod: consolidate finding the MPU port index and storing it

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An IP block's MPU interface port only needs to be found once.  The result
can be cached to speed further lookups.  This patch consolidates these
two steps into a single function.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
This commit is contained in:
Paul Walmsley 2012-04-19 04:04:29 -06:00
parent 5d95dde731
commit 24dbc21301
1 changed files with 15 additions and 24 deletions
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39
arch/arm/mach-omap2/omap_hwmod.c
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@ -1008,37 +1008,34 @@ static int _get_addr_space_by_name(struct omap_hwmod *oh, const char *name,
}
/**
* _find_mpu_port_index - find hwmod OCP slave port ID intended for MPU use
* _save_mpu_port_index - find and save the index to @oh's MPU port
* @oh: struct omap_hwmod *
*
* Returns the array index of the OCP slave port that the MPU
* addresses the device on, or -EINVAL upon error or not found.
* Determines the array index of the OCP slave port that the MPU uses
* to address the device, and saves it into the struct omap_hwmod.
* Intended to be called during hwmod registration only. No return
* value.
*/
static int __init _find_mpu_port_index(struct omap_hwmod *oh)
static void __init _save_mpu_port_index(struct omap_hwmod *oh)
{
struct omap_hwmod_ocp_if *os;
struct omap_hwmod_ocp_if *os = NULL;
int i = 0;
int found = 0;
if (!oh)
return -EINVAL;
return;
oh->_int_flags |= _HWMOD_NO_MPU_PORT;
while (i < oh->slaves_cnt) {
os = _fetch_next_ocp_if(NULL, oh->slaves, &i);
if (os->user & OCP_USER_MPU) {
found = 1;
oh->_mpu_port_index = i - 1;
oh->_int_flags &= ~_HWMOD_NO_MPU_PORT;
break;
}
}
if (found)
pr_debug("omap_hwmod: %s: MPU OCP slave port ID %d\n",
oh->name, i - 1);
else
pr_debug("omap_hwmod: %s: no MPU OCP slave port found\n",
oh->name);
return (found) ? (i - 1) : -EINVAL;
return;
}
/**
@ -1076,7 +1073,7 @@ static struct omap_hwmod_addr_space * __init _find_mpu_rt_addr_space(struct omap
int found = 0, i = 0;
os = _find_mpu_rt_port(oh);
if (!os->addr)
if (!os || !os->addr)
return NULL;
do {
@ -2213,8 +2210,6 @@ static int __init _setup(struct omap_hwmod *oh, void *data)
*/
static int __init _register(struct omap_hwmod *oh)
{
int ms_id;
if (!oh || !oh->name || !oh->class || !oh->class->name ||
(oh->_state != _HWMOD_STATE_UNKNOWN))
return -EINVAL;
@ -2224,11 +2219,7 @@ static int __init _register(struct omap_hwmod *oh)
if (_lookup(oh->name))
return -EEXIST;
ms_id = _find_mpu_port_index(oh);
if (!IS_ERR_VALUE(ms_id))
oh->_mpu_port_index = ms_id;
else
oh->_int_flags |= _HWMOD_NO_MPU_PORT;
_save_mpu_port_index(oh);
list_add_tail(&oh->node, &omap_hwmod_list);