OMAP4: powerdomains: add PRCM partition data; use OMAP4 PRM functions

OMAP4 powerdomain control registers are split between the PRM hardware
module and the PRCM_MPU local PRCM.  Add this PRCM partition
information to each OMAP4 powerdomain record, and convert the OMAP4
powerdomain function implementations to use the OMAP4 PRM instance
functions.

Also fixes a potential null pointer dereference of pwrdm->name.

The autogeneration scripts have been updated.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>

4 files changed, 115 insertions, 41 deletions

diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 8a0dcd05afeb..a76ad3f0ca65 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -20,6 +20,7 @@
 #include <linux/errno.h>
 #include <linux/string.h>
 #include "cm2xxx_3xxx.h"
+#include "prcm44xx.h"
 #include "cm44xx.h"
 #include "prm2xxx_3xxx.h"
 #include "prm44xx.h"
@@ -72,12 +73,19 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
 {
         int i;
 
-        if (!pwrdm)
+        if (!pwrdm || !pwrdm->name)
                 return -EINVAL;
 
         if (!omap_chip_is(pwrdm->omap_chip))
                 return -EINVAL;
 
+        if (cpu_is_omap44xx() &&
+            pwrdm->prcm_partition == OMAP4430_INVALID_PRCM_PARTITION) {
+                pr_err("powerdomain: %s: missing OMAP4 PRCM partition ID\n",
+                       pwrdm->name);
+                return -EINVAL;
+        }
+
         if (_pwrdm_lookup(pwrdm->name))
                 return -EEXIST;
 
diff --git a/arch/arm/mach-omap2/powerdomain44xx.c b/arch/arm/mach-omap2/powerdomain44xx.c
index 4c5ab1a2d44b..28bf5e3b000c 100644
--- a/arch/arm/mach-omap2/powerdomain44xx.c
+++ b/arch/arm/mach-omap2/powerdomain44xx.c
@@ -20,48 +20,70 @@
 #include <plat/prcm.h>
 #include "prm2xxx_3xxx.h"
 #include "prm44xx.h"
+#include "prminst44xx.h"
 #include "prm-regbits-44xx.h"
 #include "powerdomains.h"
 
 static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
 {
-        omap2_prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
-                                (pwrst << OMAP_POWERSTATE_SHIFT),
-                                pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
+        omap4_prminst_rmw_inst_reg_bits(OMAP_POWERSTATE_MASK,
+                                        (pwrst << OMAP_POWERSTATE_SHIFT),
+                                        pwrdm->prcm_partition,
+                                        pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
         return 0;
 }
 
 static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
 {
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
-                                OMAP4_PM_PWSTCTRL, OMAP_POWERSTATE_MASK);
+        u32 v;
+
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTCTRL);
+        v &= OMAP_POWERSTATE_MASK;
+        v >>= OMAP_POWERSTATE_SHIFT;
+
+        return v;
 }
 
 static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm)
 {
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
-                                OMAP4_PM_PWSTST, OMAP_POWERSTATEST_MASK);
+        u32 v;
+
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTST);
+        v &= OMAP_POWERSTATEST_MASK;
+        v >>= OMAP_POWERSTATEST_SHIFT;
+
+        return v;
 }
 
 static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
 {
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
-                                OMAP4430_LASTPOWERSTATEENTERED_MASK);
+        u32 v;
+
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTST);
+        v &= OMAP4430_LASTPOWERSTATEENTERED_MASK;
+        v >>= OMAP4430_LASTPOWERSTATEENTERED_SHIFT;
+
+        return v;
 }
 
 static int omap4_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
 {
-        omap2_prm_rmw_mod_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
-                                (1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
-                                pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
+        omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
+                                        (1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
+                                        pwrdm->prcm_partition,
+                                        pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
         return 0;
 }
 
 static int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
 {
-        omap2_prm_rmw_mod_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
-                                OMAP4430_LASTPOWERSTATEENTERED_MASK,
-                                pwrdm->prcm_offs, OMAP4_PM_PWSTST);
+        omap4_prminst_rmw_inst_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
+                                        OMAP4430_LASTPOWERSTATEENTERED_MASK,
+                                        pwrdm->prcm_partition,
+                                        pwrdm->prcm_offs, OMAP4_PM_PWSTST);
         return 0;
 }
 
@@ -70,69 +92,91 @@ static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
         u32 v;
 
         v = pwrst << __ffs(OMAP4430_LOGICRETSTATE_MASK);
-        omap2_prm_rmw_mod_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
-                                pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
+        omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
+                                        pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTCTRL);
 
         return 0;
 }
 
 static int omap4_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
-                                                                u8 pwrst)
+                                    u8 pwrst)
 {
         u32 m;
 
         m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
 
-        omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
-                                OMAP4_PM_PWSTCTRL);
+        omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
+                                        pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTCTRL);
 
         return 0;
 }
 
 static int omap4_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
-                                                                u8 pwrst)
+                                     u8 pwrst)
 {
         u32 m;
 
         m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
 
-        omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
-                                OMAP4_PM_PWSTCTRL);
+        omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
+                                        pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTCTRL);
 
         return 0;
 }
 
 static int omap4_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
 {
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
-                                OMAP4430_LOGICSTATEST_MASK);
+        u32 v;
+
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTST);
+        v &= OMAP4430_LOGICSTATEST_MASK;
+        v >>= OMAP4430_LOGICSTATEST_SHIFT;
+
+        return v;
 }
 
 static int omap4_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
 {
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
-                                             OMAP4_PM_PWSTCTRL,
-                                             OMAP4430_LOGICRETSTATE_MASK);
+        u32 v;
+
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTCTRL);
+        v &= OMAP4430_LOGICRETSTATE_MASK;
+        v >>= OMAP4430_LOGICRETSTATE_SHIFT;
+
+        return v;
 }
 
 static int omap4_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
 {
-        u32 m;
+        u32 m, v;
 
         m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
 
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
-                                             m);
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTST);
+        v &= m;
+        v >>= __ffs(m);
+
+        return v;
 }
 
 static int omap4_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
 {
-        u32 m;
+        u32 m, v;
 
         m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
 
-        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
-                                             OMAP4_PM_PWSTCTRL, m);
+        v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+                                        OMAP4_PM_PWSTCTRL);
+        v &= m;
+        v >>= __ffs(m);
+
+        return v;
 }
 
 static int omap4_pwrdm_wait_transition(struct powerdomain *pwrdm)
@@ -146,14 +190,16 @@ static int omap4_pwrdm_wait_transition(struct powerdomain *pwrdm)
          */
 
         /* XXX Is this udelay() value meaningful? */
-        while ((omap2_prm_read_mod_reg(pwrdm->prcm_offs, OMAP4_PM_PWSTST) &
+        while ((omap4_prminst_read_inst_reg(pwrdm->prcm_partition,
+                                            pwrdm->prcm_offs,
+                                            OMAP4_PM_PWSTST) &
                 OMAP_INTRANSITION_MASK) &&
-                (c++ < PWRDM_TRANSITION_BAILOUT))
-                        udelay(1);
+               (c++ < PWRDM_TRANSITION_BAILOUT))
+                udelay(1);
 
         if (c > PWRDM_TRANSITION_BAILOUT) {
                 printk(KERN_ERR "powerdomain: waited too long for "
-                        "powerdomain %s to complete transition\n", pwrdm->name);
+                       "powerdomain %s to complete transition\n", pwrdm->name);
                 return -EAGAIN;
         }
 
diff --git a/arch/arm/mach-omap2/powerdomains44xx_data.c b/arch/arm/mach-omap2/powerdomains44xx_data.c
index 069a21d54911..823f4770f947 100644
--- a/arch/arm/mach-omap2/powerdomains44xx_data.c
+++ b/arch/arm/mach-omap2/powerdomains44xx_data.c
@@ -26,6 +26,7 @@
 #include "powerdomains.h"
 
 #include "prcm-common.h"
+#include "prcm44xx.h"
 #include "prm-regbits-44xx.h"
 #include "prm44xx.h"
 #include "prcm_mpu44xx.h"
@@ -34,6 +35,7 @@
 static struct powerdomain core_44xx_pwrdm = {
         .name             = "core_pwrdm",
         .prcm_offs        = OMAP4430_PRM_CORE_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -59,6 +61,7 @@ static struct powerdomain core_44xx_pwrdm = {
 static struct powerdomain gfx_44xx_pwrdm = {
         .name             = "gfx_pwrdm",
         .prcm_offs        = OMAP4430_PRM_GFX_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_ON,
         .banks            = 1,
@@ -75,6 +78,7 @@ static struct powerdomain gfx_44xx_pwrdm = {
 static struct powerdomain abe_44xx_pwrdm = {
         .name             = "abe_pwrdm",
         .prcm_offs        = OMAP4430_PRM_ABE_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRDM_POWER_OFF,
@@ -94,6 +98,7 @@ static struct powerdomain abe_44xx_pwrdm = {
 static struct powerdomain dss_44xx_pwrdm = {
         .name             = "dss_pwrdm",
         .prcm_offs        = OMAP4430_PRM_DSS_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF,
@@ -111,6 +116,7 @@ static struct powerdomain dss_44xx_pwrdm = {
 static struct powerdomain tesla_44xx_pwrdm = {
         .name             = "tesla_pwrdm",
         .prcm_offs        = OMAP4430_PRM_TESLA_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -132,6 +138,7 @@ static struct powerdomain tesla_44xx_pwrdm = {
 static struct powerdomain wkup_44xx_pwrdm = {
         .name             = "wkup_pwrdm",
         .prcm_offs        = OMAP4430_PRM_WKUP_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_ON,
         .banks            = 1,
@@ -147,6 +154,7 @@ static struct powerdomain wkup_44xx_pwrdm = {
 static struct powerdomain cpu0_44xx_pwrdm = {
         .name             = "cpu0_pwrdm",
         .prcm_offs        = OMAP4430_PRCM_MPU_CPU0_INST,
+        .prcm_partition   = OMAP4430_PRCM_MPU_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -163,6 +171,7 @@ static struct powerdomain cpu0_44xx_pwrdm = {
 static struct powerdomain cpu1_44xx_pwrdm = {
         .name             = "cpu1_pwrdm",
         .prcm_offs        = OMAP4430_PRCM_MPU_CPU1_INST,
+        .prcm_partition   = OMAP4430_PRCM_MPU_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -179,6 +188,7 @@ static struct powerdomain cpu1_44xx_pwrdm = {
 static struct powerdomain emu_44xx_pwrdm = {
         .name             = "emu_pwrdm",
         .prcm_offs        = OMAP4430_PRM_EMU_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_ON,
         .banks            = 1,
@@ -194,6 +204,7 @@ static struct powerdomain emu_44xx_pwrdm = {
 static struct powerdomain mpu_44xx_pwrdm = {
         .name             = "mpu_pwrdm",
         .prcm_offs        = OMAP4430_PRM_MPU_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -214,6 +225,7 @@ static struct powerdomain mpu_44xx_pwrdm = {
 static struct powerdomain ivahd_44xx_pwrdm = {
         .name             = "ivahd_pwrdm",
         .prcm_offs        = OMAP4430_PRM_IVAHD_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRDM_POWER_OFF,
@@ -237,6 +249,7 @@ static struct powerdomain ivahd_44xx_pwrdm = {
 static struct powerdomain cam_44xx_pwrdm = {
         .name             = "cam_pwrdm",
         .prcm_offs        = OMAP4430_PRM_CAM_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_ON,
         .banks            = 1,
@@ -253,6 +266,7 @@ static struct powerdomain cam_44xx_pwrdm = {
 static struct powerdomain l3init_44xx_pwrdm = {
         .name             = "l3init_pwrdm",
         .prcm_offs        = OMAP4430_PRM_L3INIT_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -270,6 +284,7 @@ static struct powerdomain l3init_44xx_pwrdm = {
 static struct powerdomain l4per_44xx_pwrdm = {
         .name             = "l4per_pwrdm",
         .prcm_offs        = OMAP4430_PRM_L4PER_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_RET_ON,
         .pwrsts_logic_ret = PWRSTS_OFF_RET,
@@ -292,6 +307,7 @@ static struct powerdomain l4per_44xx_pwrdm = {
 static struct powerdomain always_on_core_44xx_pwrdm = {
         .name             = "always_on_core_pwrdm",
         .prcm_offs        = OMAP4430_PRM_ALWAYS_ON_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_ON,
 };
@@ -300,6 +316,7 @@ static struct powerdomain always_on_core_44xx_pwrdm = {
 static struct powerdomain cefuse_44xx_pwrdm = {
         .name             = "cefuse_pwrdm",
         .prcm_offs        = OMAP4430_PRM_CEFUSE_INST,
+        .prcm_partition   = OMAP4430_PRM_PARTITION,
         .omap_chip        = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
         .pwrsts           = PWRSTS_OFF_ON,
 };
diff --git a/arch/arm/plat-omap/include/plat/powerdomain.h b/arch/arm/plat-omap/include/plat/powerdomain.h
index b79eebb27a70..a0d3a30de9fd 100644
--- a/arch/arm/plat-omap/include/plat/powerdomain.h
+++ b/arch/arm/plat-omap/include/plat/powerdomain.h
@@ -1,5 +1,5 @@
 /*
- * OMAP2/3 powerdomain control
+ * OMAP2/3/4 powerdomain control
  *
  * Copyright (C) 2007-2008 Texas Instruments, Inc.
  * Copyright (C) 2007-2010 Nokia Corporation
@@ -24,7 +24,6 @@
 
 #include <plat/cpu.h>
 
-
 /* Powerdomain basic power states */
 #define PWRDM_POWER_OFF         0x0
 #define PWRDM_POWER_RET         0x1
@@ -84,6 +83,7 @@ struct powerdomain;
  * @name: Powerdomain name
  * @omap_chip: represents the OMAP chip types containing this pwrdm
  * @prcm_offs: the address offset from CM_BASE/PRM_BASE
+ * @prcm_partition: (OMAP4 only) the PRCM partition ID containing @prcm_offs
  * @pwrsts: Possible powerdomain power states
  * @pwrsts_logic_ret: Possible logic power states when pwrdm in RETENTION
  * @flags: Powerdomain flags
@@ -96,6 +96,8 @@ struct powerdomain;
  * @state_counter:
  * @timer:
  * @state_timer:
+ *
+ * @prcm_partition possible values are defined in mach-omap2/prcm44xx.h.
  */
 struct powerdomain {
         const char *name;
@@ -107,6 +109,7 @@ struct powerdomain {
         const u8 banks;
         const u8 pwrsts_mem_ret[PWRDM_MAX_MEM_BANKS];
         const u8 pwrsts_mem_on[PWRDM_MAX_MEM_BANKS];
+        const u8 prcm_partition;
         struct clockdomain *pwrdm_clkdms[PWRDM_MAX_CLKDMS];
         struct list_head node;
         int state;