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OMAP: powerdomain: Infrastructure to put arch specific code

Browse source 
Put infrastructure in place, so arch specific func pointers
can be hooked up to the platform-independent part of the
framework.
This is in preparation of splitting the powerdomain framework into
platform-independent part (for all omaps) and platform-specific
parts.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
This commit is contained in:
Rajendra Nayak 2010-12-21 20:01:18 -07:00 committed by Paul Walmsley
parent 74bea6b988
commit 3b1e8b21fc
3 changed files with 52 additions and 4 deletions
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11
arch/arm/mach-omap2/powerdomain.c
View file

@ -80,6 +80,8 @@ static u16 pwrstst_reg_offs;
/* pwrdm_list contains all registered struct powerdomains */
static LIST_HEAD(pwrdm_list);
static struct pwrdm_ops *arch_pwrdm;
/* Private functions */
static struct powerdomain *_pwrdm_lookup(const char *name)
@ -211,6 +213,7 @@ static int _pwrdm_post_transition_cb(struct powerdomain *pwrdm, void *unused)
/**
* pwrdm_init - set up the powerdomain layer
* @pwrdm_list: array of struct powerdomain pointers to register
* @custom_funcs: func pointers for arch specfic implementations
*
* Loop through the array of powerdomains @pwrdm_list, registering all
* that are available on the current CPU. If pwrdm_list is supplied
@ -218,7 +221,7 @@ static int _pwrdm_post_transition_cb(struct powerdomain *pwrdm, void *unused)
* registered. No return value. XXX pwrdm_list is not really a
* "list"; it is an array. Rename appropriately.
*/
void pwrdm_init(struct powerdomain **pwrdm_list)
void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs)
{
struct powerdomain **p = NULL;
@ -234,6 +237,11 @@ void pwrdm_init(struct powerdomain **pwrdm_list)
return;
}
if (!custom_funcs)
WARN(1, "powerdomain: No custom pwrdm functions registered\n");
else
arch_pwrdm = custom_funcs;
if (pwrdm_list) {
for (p = pwrdm_list; *p; p++)
_pwrdm_register(*p);
@ -1074,4 +1082,3 @@ int pwrdm_post_transition(void)
pwrdm_for_each(_pwrdm_post_transition_cb, NULL);
return 0;
}

2
arch/arm/mach-omap2/powerdomains_data.c
View file

@ -149,5 +149,5 @@ static struct powerdomain *powerdomains_omap[] __initdata = {
void pwrdm_fw_init(void)
{
pwrdm_init(powerdomains_omap);
pwrdm_init(powerdomains_omap, NULL);
}

43
arch/arm/plat-omap/include/plat/powerdomain.h
View file

@ -117,9 +117,50 @@ struct powerdomain {
#endif
};
/**
* struct pwrdm_ops - Arch specfic function implementations
* @pwrdm_set_next_pwrst: Set the target power state for a pd
* @pwrdm_read_next_pwrst: Read the target power state set for a pd
* @pwrdm_read_pwrst: Read the current power state of a pd
* @pwrdm_read_prev_pwrst: Read the prev power state entered by the pd
* @pwrdm_set_logic_retst: Set the logic state in RET for a pd
* @pwrdm_set_mem_onst: Set the Memory state in ON for a pd
* @pwrdm_set_mem_retst: Set the Memory state in RET for a pd
* @pwrdm_read_logic_pwrst: Read the current logic state of a pd
* @pwrdm_read_prev_logic_pwrst: Read the previous logic state entered by a pd
* @pwrdm_read_logic_retst: Read the logic state in RET for a pd
* @pwrdm_read_mem_pwrst: Read the current memory state of a pd
* @pwrdm_read_prev_mem_pwrst: Read the previous memory state entered by a pd
* @pwrdm_read_mem_retst: Read the memory state in RET for a pd
* @pwrdm_clear_all_prev_pwrst: Clear all previous power states logged for a pd
* @pwrdm_enable_hdwr_sar: Enable Hardware Save-Restore feature for the pd
* @pwrdm_disable_hdwr_sar: Disable Hardware Save-Restore feature for a pd
* @pwrdm_set_lowpwrstchange: Enable pd transitions from a shallow to deep sleep
* @pwrdm_wait_transition: Wait for a pd state transition to complete
*/
struct pwrdm_ops {
int (*pwrdm_set_next_pwrst)(struct powerdomain *pwrdm, u8 pwrst);
int (*pwrdm_read_next_pwrst)(struct powerdomain *pwrdm);
int (*pwrdm_read_pwrst)(struct powerdomain *pwrdm);
int (*pwrdm_read_prev_pwrst)(struct powerdomain *pwrdm);
int (*pwrdm_set_logic_retst)(struct powerdomain *pwrdm, u8 pwrst);
int (*pwrdm_set_mem_onst)(struct powerdomain *pwrdm, u8 bank, u8 pwrst);
int (*pwrdm_set_mem_retst)(struct powerdomain *pwrdm, u8 bank, u8 pwrst);
int (*pwrdm_read_logic_pwrst)(struct powerdomain *pwrdm);
int (*pwrdm_read_prev_logic_pwrst)(struct powerdomain *pwrdm);
int (*pwrdm_read_logic_retst)(struct powerdomain *pwrdm);
int (*pwrdm_read_mem_pwrst)(struct powerdomain *pwrdm, u8 bank);
int (*pwrdm_read_prev_mem_pwrst)(struct powerdomain *pwrdm, u8 bank);
int (*pwrdm_read_mem_retst)(struct powerdomain *pwrdm, u8 bank);
int (*pwrdm_clear_all_prev_pwrst)(struct powerdomain *pwrdm);
int (*pwrdm_enable_hdwr_sar)(struct powerdomain *pwrdm);
int (*pwrdm_disable_hdwr_sar)(struct powerdomain *pwrdm);
int (*pwrdm_set_lowpwrstchange)(struct powerdomain *pwrdm);
int (*pwrdm_wait_transition)(struct powerdomain *pwrdm);
};
void pwrdm_fw_init(void);
void pwrdm_init(struct powerdomain **pwrdm_list);
void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs);
struct powerdomain *pwrdm_lookup(const char *name);