From 24dbc2130179ebd493a241f6f5972cf6524b933a Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Thu, 19 Apr 2012 04:04:29 -0600 Subject: ARM: OMAP2+: hwmod: consolidate finding the MPU port index and storing it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Cc: Benoît Cousson --- arch/arm/mach-omap2/omap_hwmod.c | 39 +++++++++++++++------------------------ 1 file changed, 15 insertions(+), 24 deletions(-) (limited to 'arch/arm/mach-omap2') diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index f74f3af95ca..8cf837d2332 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -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); -- cgit v1.2.3-70-g09d2