[PATCH 04/18] ARM: OMAP3: PRM: move prcm wakeup helper to prm driver
Tero Kristo
t-kristo at ti.com
Tue Mar 4 11:19:04 EST 2014
Done in preparation to make the prm an individual driver.
Signed-off-by: Tero Kristo <t-kristo at ti.com>
---
arch/arm/mach-omap2/pm34xx.c | 60 +++++------------------------------------
arch/arm/mach-omap2/prm3xxx.c | 53 ++++++++++++++++++++++++++++++++++++
arch/arm/mach-omap2/prm3xxx.h | 1 +
3 files changed, 60 insertions(+), 54 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 1f3770a..bba96c1 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -132,59 +132,11 @@ static void omap3_save_secure_ram_context(void)
}
}
-/*
- * PRCM Interrupt Handler Helper Function
- *
- * The purpose of this function is to clear any wake-up events latched
- * in the PRCM PM_WKST_x registers. It is possible that a wake-up event
- * may occur whilst attempting to clear a PM_WKST_x register and thus
- * set another bit in this register. A while loop is used to ensure
- * that any peripheral wake-up events occurring while attempting to
- * clear the PM_WKST_x are detected and cleared.
- */
-static int prcm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits)
-{
- u32 wkst, fclk, iclk, clken;
- u16 wkst_off = (regs == 3) ? OMAP3430ES2_PM_WKST3 : PM_WKST1;
- u16 fclk_off = (regs == 3) ? OMAP3430ES2_CM_FCLKEN3 : CM_FCLKEN1;
- u16 iclk_off = (regs == 3) ? CM_ICLKEN3 : CM_ICLKEN1;
- u16 grpsel_off = (regs == 3) ?
- OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL;
- int c = 0;
-
- wkst = omap2_prm_read_mod_reg(module, wkst_off);
- wkst &= omap2_prm_read_mod_reg(module, grpsel_off);
- wkst &= ~ignore_bits;
- if (wkst) {
- iclk = omap2_cm_read_mod_reg(module, iclk_off);
- fclk = omap2_cm_read_mod_reg(module, fclk_off);
- while (wkst) {
- clken = wkst;
- omap2_cm_set_mod_reg_bits(clken, module, iclk_off);
- /*
- * For USBHOST, we don't know whether HOST1 or
- * HOST2 woke us up, so enable both f-clocks
- */
- if (module == OMAP3430ES2_USBHOST_MOD)
- clken |= 1 << OMAP3430ES2_EN_USBHOST2_SHIFT;
- omap2_cm_set_mod_reg_bits(clken, module, fclk_off);
- omap2_prm_write_mod_reg(wkst, module, wkst_off);
- wkst = omap2_prm_read_mod_reg(module, wkst_off);
- wkst &= ~ignore_bits;
- c++;
- }
- omap2_cm_write_mod_reg(iclk, module, iclk_off);
- omap2_cm_write_mod_reg(fclk, module, fclk_off);
- }
-
- return c;
-}
-
static irqreturn_t _prcm_int_handle_io(int irq, void *unused)
{
int c;
- c = prcm_clear_mod_irqs(WKUP_MOD, 1,
+ c = omap3xxx_prm_clear_mod_irqs(WKUP_MOD, 1,
~(OMAP3430_ST_IO_MASK | OMAP3430_ST_IO_CHAIN_MASK));
return c ? IRQ_HANDLED : IRQ_NONE;
@@ -199,13 +151,13 @@ static irqreturn_t _prcm_int_handle_wakeup(int irq, void *unused)
* these are handled in a separate handler to avoid acking
* IO events before parsing in mux code
*/
- c = prcm_clear_mod_irqs(WKUP_MOD, 1,
+ c = omap3xxx_prm_clear_mod_irqs(WKUP_MOD, 1,
OMAP3430_ST_IO_MASK | OMAP3430_ST_IO_CHAIN_MASK);
- c += prcm_clear_mod_irqs(CORE_MOD, 1, 0);
- c += prcm_clear_mod_irqs(OMAP3430_PER_MOD, 1, 0);
+ c += omap3xxx_prm_clear_mod_irqs(CORE_MOD, 1, 0);
+ c += omap3xxx_prm_clear_mod_irqs(OMAP3430_PER_MOD, 1, 0);
if (omap_rev() > OMAP3430_REV_ES1_0) {
- c += prcm_clear_mod_irqs(CORE_MOD, 3, 0);
- c += prcm_clear_mod_irqs(OMAP3430ES2_USBHOST_MOD, 1, 0);
+ c += omap3xxx_prm_clear_mod_irqs(CORE_MOD, 3, 0);
+ c += omap3xxx_prm_clear_mod_irqs(OMAP3430ES2_USBHOST_MOD, 1, 0);
}
return c ? IRQ_HANDLED : IRQ_NONE;
diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c
index 7721990..7d17edc 100644
--- a/arch/arm/mach-omap2/prm3xxx.c
+++ b/arch/arm/mach-omap2/prm3xxx.c
@@ -26,6 +26,8 @@
#include "prm2xxx_3xxx.h"
#include "cm2xxx_3xxx.h"
#include "prm-regbits-34xx.h"
+#include "cm3xxx.h"
+#include "cm-regbits-34xx.h"
static const struct omap_prcm_irq omap3_prcm_irqs[] = {
OMAP_PRCM_IRQ("wkup", 0, 0),
@@ -205,6 +207,57 @@ void omap3xxx_prm_restore_irqen(u32 *saved_mask)
}
/**
+ * omap3xxx_prm_clear_mod_irqs - clear wake-up events from PRCM interrupt
+ * @module: PRM module to clear wakeups from
+ * @regs: register set to clear, 1 or 3
+ * @ignore_bits: wakeup status bits to ignore
+ *
+ * The purpose of this function is to clear any wake-up events latched
+ * in the PRCM PM_WKST_x registers. It is possible that a wake-up event
+ * may occur whilst attempting to clear a PM_WKST_x register and thus
+ * set another bit in this register. A while loop is used to ensure
+ * that any peripheral wake-up events occurring while attempting to
+ * clear the PM_WKST_x are detected and cleared.
+ */
+int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits)
+{
+ u32 wkst, fclk, iclk, clken;
+ u16 wkst_off = (regs == 3) ? OMAP3430ES2_PM_WKST3 : PM_WKST1;
+ u16 fclk_off = (regs == 3) ? OMAP3430ES2_CM_FCLKEN3 : CM_FCLKEN1;
+ u16 iclk_off = (regs == 3) ? CM_ICLKEN3 : CM_ICLKEN1;
+ u16 grpsel_off = (regs == 3) ?
+ OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL;
+ int c = 0;
+
+ wkst = omap2_prm_read_mod_reg(module, wkst_off);
+ wkst &= omap2_prm_read_mod_reg(module, grpsel_off);
+ wkst &= ~ignore_bits;
+ if (wkst) {
+ iclk = omap2_cm_read_mod_reg(module, iclk_off);
+ fclk = omap2_cm_read_mod_reg(module, fclk_off);
+ while (wkst) {
+ clken = wkst;
+ omap2_cm_set_mod_reg_bits(clken, module, iclk_off);
+ /*
+ * For USBHOST, we don't know whether HOST1 or
+ * HOST2 woke us up, so enable both f-clocks
+ */
+ if (module == OMAP3430ES2_USBHOST_MOD)
+ clken |= 1 << OMAP3430ES2_EN_USBHOST2_SHIFT;
+ omap2_cm_set_mod_reg_bits(clken, module, fclk_off);
+ omap2_prm_write_mod_reg(wkst, module, wkst_off);
+ wkst = omap2_prm_read_mod_reg(module, wkst_off);
+ wkst &= ~ignore_bits;
+ c++;
+ }
+ omap2_cm_write_mod_reg(iclk, module, iclk_off);
+ omap2_cm_write_mod_reg(fclk, module, fclk_off);
+ }
+
+ return c;
+}
+
+/**
* omap3xxx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain
*
* Clear any previously-latched I/O wakeup events and ensure that the
diff --git a/arch/arm/mach-omap2/prm3xxx.h b/arch/arm/mach-omap2/prm3xxx.h
index f8eb833..ba602f5 100644
--- a/arch/arm/mach-omap2/prm3xxx.h
+++ b/arch/arm/mach-omap2/prm3xxx.h
@@ -162,6 +162,7 @@ extern void omap3xxx_prm_dpll3_reset(void);
extern int __init omap3xxx_prm_init(void);
extern u32 omap3xxx_prm_get_reset_sources(void);
+int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits);
#endif /* __ASSEMBLER */
--
1.7.9.5
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