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Subject[PATCH v2 1/2] AM35x: Using OMAP3 generic hwmods
Date
This patch enables AM35x SoCs to use generic OMAP3 hwmods
(i,e. omap3xxx_hwmods) by allowing board-am3517evm.c to
disable the modules which are not present in AM3517.

Reviewed-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
---
arch/arm/mach-omap2/board-am3517evm.c | 11 +++++++++++
arch/arm/mach-omap2/omap_hwmod.c | 3 ++-
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 18 ++++++++++++++++++
arch/arm/plat-omap/include/plat/omap_hwmod.h | 3 +++
4 files changed, 34 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/board-am3517evm.c b/arch/arm/mach-omap2/board-am3517evm.c
index f3006c3..8a5f232 100644
--- a/arch/arm/mach-omap2/board-am3517evm.c
+++ b/arch/arm/mach-omap2/board-am3517evm.c
@@ -34,6 +34,7 @@
#include <plat/board.h>
#include <plat/common.h>
#include <plat/usb.h>
+#include <plat/omap_hwmod.h>
#include <video/omapdss.h>
#include <video/omap-panel-generic-dpi.h>

@@ -359,11 +360,21 @@ static struct omap_dss_board_info am3517_evm_dss_data = {
.default_device = &am3517_evm_lcd_device,
};

+static char *am3517_unused_hwmods[] = {
+ "iva",
+ "sr1_hwmod",
+ "sr2_hwmod",
+ "mailbox",
+ "usb_otg_hs",
+ NULL,
+};
+
/*
* Board initialization
*/
static void __init am3517_evm_init_early(void)
{
+ omap2_disable_unused_hwmods(am3517_unused_hwmods);
omap2_init_common_infrastructure();
omap2_init_common_devices(NULL, NULL);
}
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 84cc0bd..bb765b5 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1954,7 +1954,8 @@ int __init omap_hwmod_register(struct omap_hwmod **ohs)

i = 0;
do {
- if (!omap_chip_is(ohs[i]->omap_chip))
+ if (!omap_chip_is(ohs[i]->omap_chip)
+ || (ohs[i]->flags & HWMOD_UNUSED))
continue;

r = _register(ohs[i]);
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 25bf43b..5c282bb 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -3281,6 +3281,24 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
NULL,
};

+void __init omap2_disable_unused_hwmods(char *unused_hwmods[])
+{
+ int index;
+
+ for (index = 0; omap3xxx_hwmods[index]; index++) {
+ char **hwmods = unused_hwmods;
+ while (*hwmods) {
+ if (strcmp(omap3xxx_hwmods[index]->name,
+ *hwmods) == 0) {
+ omap3xxx_hwmods[index]->flags
+ = HWMOD_UNUSED;
+ break;
+ }
+ hwmods++;
+ }
+ }
+}
+
int __init omap3xxx_hwmod_init(void)
{
return omap_hwmod_register(omap3xxx_hwmods);
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 0e329ca..490a95a 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -398,6 +398,7 @@ struct omap_hwmod_omap4_prcm {
* in order to complete the reset. Optional clocks will be disabled
* again after the reset.
* HWMOD_16BIT_REG: Module has 16bit registers
+ * HWMOD_UNUSED: The IP for this module is unused or disabled on current SoC
*/
#define HWMOD_SWSUP_SIDLE (1 << 0)
#define HWMOD_SWSUP_MSTANDBY (1 << 1)
@@ -408,6 +409,7 @@ struct omap_hwmod_omap4_prcm {
#define HWMOD_NO_IDLEST (1 << 6)
#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7)
#define HWMOD_16BIT_REG (1 << 8)
+#define HWMOD_UNUSED (1 << 9)

/*
* omap_hwmod._int_flags definitions
@@ -615,5 +617,6 @@ extern int omap2420_hwmod_init(void);
extern int omap2430_hwmod_init(void);
extern int omap3xxx_hwmod_init(void);
extern int omap44xx_hwmod_init(void);
+extern void omap2_disable_unused_hwmods(char *unused_hwmods[]);

#endif
--
1.7.1


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