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Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain.c112
1 files changed, 85 insertions, 27 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index e503050dda0..c0de05097b5 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -6,6 +6,8 @@
*
* Written by Paul Walmsley
*
+ * Added OMAP4 specific support by Abhijit Pagare <abhijitpagare@ti.com>
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
@@ -26,8 +28,10 @@
#include "cm.h"
#include "cm-regbits-34xx.h"
+#include "cm-regbits-44xx.h"
#include "prm.h"
#include "prm-regbits-34xx.h"
+#include "prm-regbits-44xx.h"
#include <plat/cpu.h>
#include <plat/powerdomain.h>
@@ -40,6 +44,38 @@ enum {
PWRDM_STATE_PREV,
};
+/* Variable holding value of the CPU dependent PWRSTCTRL Register Offset */
+static u16 pwrstctrl_reg_offs;
+
+/* Variable holding value of the CPU dependent PWRSTST Register Offset */
+static u16 pwrstst_reg_offs;
+
+/* OMAP3 and OMAP4 specific register bit initialisations
+ * Notice that the names here are not according to each power
+ * domain but the bit mapping used applies to all of them
+ */
+
+/* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
+#define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
+#define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
+#define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
+#define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
+#define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
+
+/* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
+#define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE
+#define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE
+#define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE
+#define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE
+#define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
+
+/* OMAP3 and OMAP4 Memory Status bits */
+#define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
+#define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
+#define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
+#define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
+#define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
+
/* pwrdm_list contains all registered struct powerdomains */
static LIST_HEAD(pwrdm_list);
@@ -181,6 +217,18 @@ void pwrdm_init(struct powerdomain **pwrdm_list)
{
struct powerdomain **p = NULL;
+ if (cpu_is_omap24xx() | cpu_is_omap34xx()) {
+ pwrstctrl_reg_offs = OMAP2_PM_PWSTCTRL;
+ pwrstst_reg_offs = OMAP2_PM_PWSTST;
+ } else if (cpu_is_omap44xx()) {
+ pwrstctrl_reg_offs = OMAP4_PM_PWSTCTRL;
+ pwrstst_reg_offs = OMAP4_PM_PWSTST;
+ } else {
+ printk(KERN_ERR "Power Domain struct not supported for " \
+ "this CPU\n");
+ return;
+ }
+
if (pwrdm_list) {
for (p = pwrdm_list; *p; p++) {
pwrdm_register(*p);
@@ -710,7 +758,7 @@ int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
(pwrst << OMAP_POWERSTATE_SHIFT),
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+ pwrdm->prcm_offs, pwrstctrl_reg_offs);
return 0;
}
@@ -728,8 +776,8 @@ int pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
if (!pwrdm)
return -EINVAL;
- return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL,
- OMAP_POWERSTATE_MASK);
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ pwrstctrl_reg_offs, OMAP_POWERSTATE_MASK);
}
/**
@@ -745,8 +793,8 @@ int pwrdm_read_pwrst(struct powerdomain *pwrdm)
if (!pwrdm)
return -EINVAL;
- return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST,
- OMAP_POWERSTATEST_MASK);
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ pwrstst_reg_offs, OMAP_POWERSTATEST_MASK);
}
/**
@@ -796,7 +844,7 @@ int pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
*/
prm_rmw_mod_reg_bits(OMAP3430_LOGICL1CACHERETSTATE,
(pwrst << __ffs(OMAP3430_LOGICL1CACHERETSTATE)),
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+ pwrdm->prcm_offs, pwrstctrl_reg_offs);
return 0;
}
@@ -839,16 +887,19 @@ int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
*/
switch (bank) {
case 0:
- m = OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK;
+ m = OMAP_MEM0_ONSTATE_MASK;
break;
case 1:
- m = OMAP3430_L1FLATMEMONSTATE_MASK;
+ m = OMAP_MEM1_ONSTATE_MASK;
break;
case 2:
- m = OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK;
+ m = OMAP_MEM2_ONSTATE_MASK;
break;
case 3:
- m = OMAP3430_L2FLATMEMONSTATE_MASK;
+ m = OMAP_MEM3_ONSTATE_MASK;
+ break;
+ case 4:
+ m = OMAP_MEM4_ONSTATE_MASK;
break;
default:
WARN_ON(1); /* should never happen */
@@ -856,7 +907,7 @@ int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
}
prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)),
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+ pwrdm->prcm_offs, pwrstctrl_reg_offs);
return 0;
}
@@ -900,16 +951,19 @@ int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
*/
switch (bank) {
case 0:
- m = OMAP3430_SHAREDL1CACHEFLATRETSTATE;
+ m = OMAP_MEM0_RETSTATE_MASK;
break;
case 1:
- m = OMAP3430_L1FLATMEMRETSTATE;
+ m = OMAP_MEM1_RETSTATE_MASK;
break;
case 2:
- m = OMAP3430_SHAREDL2CACHEFLATRETSTATE;
+ m = OMAP_MEM2_RETSTATE_MASK;
break;
case 3:
- m = OMAP3430_L2FLATMEMRETSTATE;
+ m = OMAP_MEM3_RETSTATE_MASK;
+ break;
+ case 4:
+ m = OMAP_MEM4_RETSTATE_MASK;
break;
default:
WARN_ON(1); /* should never happen */
@@ -917,7 +971,7 @@ int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
}
prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL);
+ pwrstctrl_reg_offs);
return 0;
}
@@ -936,8 +990,8 @@ int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
if (!pwrdm)
return -EINVAL;
- return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST,
- OMAP3430_LOGICSTATEST);
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ pwrstst_reg_offs, OMAP3430_LOGICSTATEST);
}
/**
@@ -994,23 +1048,27 @@ int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
*/
switch (bank) {
case 0:
- m = OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK;
+ m = OMAP_MEM0_STATEST_MASK;
break;
case 1:
- m = OMAP3430_L1FLATMEMSTATEST_MASK;
+ m = OMAP_MEM1_STATEST_MASK;
break;
case 2:
- m = OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK;
+ m = OMAP_MEM2_STATEST_MASK;
break;
case 3:
- m = OMAP3430_L2FLATMEMSTATEST_MASK;
+ m = OMAP_MEM3_STATEST_MASK;
+ break;
+ case 4:
+ m = OMAP_MEM4_STATEST_MASK;
break;
default:
WARN_ON(1); /* should never happen */
return -EEXIST;
}
- return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST, m);
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ pwrstst_reg_offs, m);
}
/**
@@ -1114,7 +1172,7 @@ int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm)
pwrdm->name);
prm_rmw_mod_reg_bits(0, 1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+ pwrdm->prcm_offs, pwrstctrl_reg_offs);
return 0;
}
@@ -1142,7 +1200,7 @@ int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm)
pwrdm->name);
prm_rmw_mod_reg_bits(1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT, 0,
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+ pwrdm->prcm_offs, pwrstctrl_reg_offs);
return 0;
}
@@ -1183,10 +1241,10 @@ int pwrdm_wait_transition(struct powerdomain *pwrdm)
*/
/* XXX Is this udelay() value meaningful? */
- while ((prm_read_mod_reg(pwrdm->prcm_offs, OMAP2_PM_PWSTST) &
+ while ((prm_read_mod_reg(pwrdm->prcm_offs, pwrstst_reg_offs) &
OMAP_INTRANSITION) &&
(c++ < PWRDM_TRANSITION_BAILOUT))
- udelay(1);
+ udelay(1);
if (c > PWRDM_TRANSITION_BAILOUT) {
printk(KERN_ERR "powerdomain: waited too long for "
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-12 13:51:56 +0000