[PATCH 2/9] omap2/3/4: ioremap omap_globals module
Santosh Shilimkar
santosh.shilimkar at ti.com
Thu Feb 18 03:59:07 EST 2010
This is a clean-up patch towards dynamic allocation of IO space
instead of using harcoded macros to calculate virtual addresses.
Also update the sdrc, prcm, tap and control module to
allocate iospace dynamically
As per Tony's suggestion V2 version drops tap changes
becasue ioremap uses cpu_is_omap2420() and cpu_is_omap2430(),
so we can't use that for setting tap_base. Hence ioremap()
won't work for tap until omap2_check_revision() is done
Signed-off-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
CC: Kevin Hilman <khilman at deeprootsystems.com>
CC: Tony Lindgren <tony at atomide.com>
---
arch/arm/mach-omap2/control.c | 6 ++++-
arch/arm/mach-omap2/prcm.c | 16 ++++++++++--
arch/arm/mach-omap2/sdrc.c | 11 +++++++-
arch/arm/plat-omap/common.c | 38 +++++++++++++++---------------
arch/arm/plat-omap/include/plat/common.h | 17 ++++++++-----
5 files changed, 56 insertions(+), 32 deletions(-)
diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index cdd1f35..43f8a33 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -140,7 +140,11 @@ static struct omap3_control_regs control_context;
void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
{
- omap2_ctrl_base = omap2_globals->ctrl;
+ /* Static mapping, never released */
+ if (omap2_globals->ctrl) {
+ omap2_ctrl_base = ioremap(omap2_globals->ctrl, SZ_4K);
+ WARN_ON(!omap2_ctrl_base);
+ }
}
void __iomem *omap_ctrl_base_get(void)
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index e8e121a..338d5f6 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -279,9 +279,19 @@ int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, const char *name)
void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals)
{
- prm_base = omap2_globals->prm;
- cm_base = omap2_globals->cm;
- cm2_base = omap2_globals->cm2;
+ /* Static mapping, never released */
+ if (omap2_globals->prm) {
+ prm_base = ioremap(omap2_globals->prm, SZ_8K);
+ WARN_ON(!prm_base);
+ }
+ if (omap2_globals->cm) {
+ cm_base = ioremap(omap2_globals->cm, SZ_8K);
+ WARN_ON(!cm_base);
+ }
+ if (omap2_globals->cm2) {
+ cm2_base = ioremap(omap2_globals->cm2, SZ_8K);
+ WARN_ON(!cm2_base);
+ }
}
#ifdef CONFIG_ARCH_OMAP3
diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c
index cbfbd14..4c65f56 100644
--- a/arch/arm/mach-omap2/sdrc.c
+++ b/arch/arm/mach-omap2/sdrc.c
@@ -119,8 +119,15 @@ int omap2_sdrc_get_params(unsigned long r,
void __init omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
{
- omap2_sdrc_base = omap2_globals->sdrc;
- omap2_sms_base = omap2_globals->sms;
+ /* Static mapping, never released */
+ if (omap2_globals->sdrc) {
+ omap2_sdrc_base = ioremap(omap2_globals->sdrc, SZ_64K);
+ WARN_ON(!omap2_sdrc_base);
+ }
+ if (omap2_globals->sms) {
+ omap2_sms_base = ioremap(omap2_globals->sms, SZ_64K);
+ WARN_ON(!omap2_sms_base);
+ }
}
/**
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 4f29e8c..088c1a0 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -256,11 +256,11 @@ static void __init __omap2_set_globals(struct omap_globals *omap2_globals)
static struct omap_globals omap242x_globals = {
.class = OMAP242X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(0x48014000),
- .sdrc = OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE),
- .sms = OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE),
- .ctrl = OMAP2_L4_IO_ADDRESS(OMAP2420_CTRL_BASE),
- .prm = OMAP2_L4_IO_ADDRESS(OMAP2420_PRM_BASE),
- .cm = OMAP2_L4_IO_ADDRESS(OMAP2420_CM_BASE),
+ .sdrc = OMAP2420_SDRC_BASE,
+ .sms = OMAP2420_SMS_BASE,
+ .ctrl = OMAP2420_CTRL_BASE,
+ .prm = OMAP2420_PRM_BASE,
+ .cm = OMAP2420_CM_BASE,
.uart1_phys = OMAP2_UART1_BASE,
.uart2_phys = OMAP2_UART2_BASE,
.uart3_phys = OMAP2_UART3_BASE,
@@ -277,11 +277,11 @@ void __init omap2_set_globals_242x(void)
static struct omap_globals omap243x_globals = {
.class = OMAP243X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(0x4900a000),
- .sdrc = OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE),
- .sms = OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE),
- .ctrl = OMAP2_L4_IO_ADDRESS(OMAP243X_CTRL_BASE),
- .prm = OMAP2_L4_IO_ADDRESS(OMAP2430_PRM_BASE),
- .cm = OMAP2_L4_IO_ADDRESS(OMAP2430_CM_BASE),
+ .sdrc = OMAP243X_SDRC_BASE,
+ .sms = OMAP243X_SMS_BASE,
+ .ctrl = OMAP243X_CTRL_BASE,
+ .prm = OMAP2430_PRM_BASE,
+ .cm = OMAP2430_CM_BASE,
.uart1_phys = OMAP2_UART1_BASE,
.uart2_phys = OMAP2_UART2_BASE,
.uart3_phys = OMAP2_UART3_BASE,
@@ -298,11 +298,11 @@ void __init omap2_set_globals_243x(void)
static struct omap_globals omap3_globals = {
.class = OMAP343X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(0x4830A000),
- .sdrc = OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE),
- .sms = OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE),
- .ctrl = OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE),
- .prm = OMAP2_L4_IO_ADDRESS(OMAP3430_PRM_BASE),
- .cm = OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE),
+ .sdrc = OMAP343X_SDRC_BASE,
+ .sms = OMAP343X_SMS_BASE,
+ .ctrl = OMAP343X_CTRL_BASE,
+ .prm = OMAP3430_PRM_BASE,
+ .cm = OMAP3430_CM_BASE,
.uart1_phys = OMAP3_UART1_BASE,
.uart2_phys = OMAP3_UART2_BASE,
.uart3_phys = OMAP3_UART3_BASE,
@@ -325,10 +325,10 @@ void __init omap2_set_globals_36xx(void)
static struct omap_globals omap4_globals = {
.class = OMAP443X_CLASS,
.tap = OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE),
- .ctrl = OMAP2_L4_IO_ADDRESS(OMAP443X_CTRL_BASE),
- .prm = OMAP2_L4_IO_ADDRESS(OMAP4430_PRM_BASE),
- .cm = OMAP2_L4_IO_ADDRESS(OMAP4430_CM_BASE),
- .cm2 = OMAP2_L4_IO_ADDRESS(OMAP4430_CM2_BASE),
+ .ctrl = OMAP443X_CTRL_BASE,
+ .prm = OMAP4430_PRM_BASE,
+ .cm = OMAP4430_CM_BASE,
+ .cm2 = OMAP4430_CM2_BASE,
.uart1_phys = OMAP4_UART1_BASE,
.uart2_phys = OMAP4_UART2_BASE,
.uart3_phys = OMAP4_UART3_BASE,
diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h
index e04a58e..d0faff0 100644
--- a/arch/arm/plat-omap/include/plat/common.h
+++ b/arch/arm/plat-omap/include/plat/common.h
@@ -37,16 +37,19 @@ extern void __iomem *gic_cpu_base_addr;
extern void omap_map_common_io(void);
extern struct sys_timer omap_timer;
-/* IO bases for various OMAP processors */
+/* IO bases for various OMAP processors
+ * Except the tap base, rest all the io bases
+ * listed are physical addresses.
+ */
struct omap_globals {
u32 class; /* OMAP class to detect */
void __iomem *tap; /* Control module ID code */
- void __iomem *sdrc; /* SDRAM Controller */
- void __iomem *sms; /* SDRAM Memory Scheduler */
- void __iomem *ctrl; /* System Control Module */
- void __iomem *prm; /* Power and Reset Management */
- void __iomem *cm; /* Clock Management */
- void __iomem *cm2;
+ unsigned long sdrc; /* SDRAM Controller */
+ unsigned long sms; /* SDRAM Memory Scheduler */
+ unsigned long ctrl; /* System Control Module */
+ unsigned long prm; /* Power and Reset Management */
+ unsigned long cm; /* Clock Management */
+ unsigned long cm2;
unsigned long uart1_phys;
unsigned long uart2_phys;
unsigned long uart3_phys;
--
1.6.0.4
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