[PATCH 2/6] OMAP: powerdomain: Infrastructure to put arch specific code

[Rajendra Nayak <rnayak@xxxxxx>]

Put infrastructure in place, so arch specific func pointers
can be hooked up to the platform-independent part of the
framework.

Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
Cc: Paul Walmsley <paul@xxxxxxxxx>
Cc: Benoit Cousson <b-cousson@xxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
---
 arch/arm/mach-omap2/io.c                      |    2 +-
 arch/arm/plat-omap/include/plat/powerdomain.h |   22 +++++++++++++++++++++-
 arch/arm/plat-omap/powerdomain.c              |   10 ++++++++--
 3 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 40562dd..76c531a 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -316,7 +316,7 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
 {
 	u8 skip_setup_idle = 0;
 
-	pwrdm_init(powerdomains_omap);
+	pwrdm_init(powerdomains_omap, NULL);
 	clkdm_init(clockdomains_omap, clkdm_autodeps);
 	if (cpu_is_omap242x())
 		omap2420_hwmod_init();
diff --git a/arch/arm/plat-omap/include/plat/powerdomain.h b/arch/arm/plat-omap/include/plat/powerdomain.h
index 9ca420d..35e1ef7 100644
--- a/arch/arm/plat-omap/include/plat/powerdomain.h
+++ b/arch/arm/plat-omap/include/plat/powerdomain.h
@@ -117,8 +117,28 @@ struct powerdomain {
 #endif
 };
 
+struct pwrdm_functions {
+	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_init(struct powerdomain **pwrdm_list);
+void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_functions *custom_funcs);
 
 struct powerdomain *pwrdm_lookup(const char *name);
 
diff --git a/arch/arm/plat-omap/powerdomain.c b/arch/arm/plat-omap/powerdomain.c
index 9204799..9e2d712 100644
--- a/arch/arm/plat-omap/powerdomain.c
+++ b/arch/arm/plat-omap/powerdomain.c
@@ -80,6 +80,8 @@ static u16 pwrstst_reg_offs;
 /* pwrdm_list contains all registered struct powerdomains */
 static LIST_HEAD(pwrdm_list);
 
+static struct pwrdm_functions *arch_pwrdm;
+
 /* Private functions */
 
 static struct powerdomain *_pwrdm_lookup(const char *name)
@@ -218,7 +220,7 @@ 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_functions *custom_funcs)
 {
 	struct powerdomain **p = NULL;
 
@@ -234,6 +236,11 @@ void pwrdm_init(struct powerdomain **pwrdm_list)
 		return;
 	}
 
+	if (!custom_funcs)
+		WARN(1, "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 +1081,3 @@ int pwrdm_post_transition(void)
 	pwrdm_for_each(_pwrdm_post_transition_cb, NULL);
 	return 0;
 }
-
-- 
1.7.0.4

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