summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/prcm.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/prcm.c')
-rw-r--r--arch/arm/mach-omap2/prcm.c118
1 files changed, 77 insertions, 41 deletions
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index cf466ea1dffc..07a60f1204ca 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -11,6 +11,7 @@
* Rajendra Nayak <rnayak@ti.com>
*
* Some pieces of code Copyright (C) 2005 Texas Instruments, Inc.
+ * Upgraded with OMAP4 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
@@ -28,6 +29,7 @@
#include <plat/control.h>
#include "clock.h"
+#include "clock2xxx.h"
#include "cm.h"
#include "prm.h"
#include "prm-regbits-24xx.h"
@@ -121,33 +123,46 @@ struct omap3_prcm_regs prcm_context;
u32 omap_prcm_get_reset_sources(void)
{
/* XXX This presumably needs modification for 34XX */
- return prm_read_mod_reg(WKUP_MOD, RM_RSTST) & 0x7f;
+ if (cpu_is_omap24xx() || cpu_is_omap34xx())
+ return prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTST) & 0x7f;
+ if (cpu_is_omap44xx())
+ return prm_read_mod_reg(WKUP_MOD, OMAP4_RM_RSTST) & 0x7f;
+
+ return 0;
}
EXPORT_SYMBOL(omap_prcm_get_reset_sources);
/* Resets clock rates and reboots the system. Only called from system.h */
-void omap_prcm_arch_reset(char mode)
+void omap_prcm_arch_reset(char mode, const char *cmd)
{
- s16 prcm_offs;
- omap2_clk_prepare_for_reboot();
+ s16 prcm_offs = 0;
+
+ if (cpu_is_omap24xx()) {
+ omap2xxx_clk_prepare_for_reboot();
- if (cpu_is_omap24xx())
prcm_offs = WKUP_MOD;
- else if (cpu_is_omap34xx()) {
+ } else if (cpu_is_omap34xx()) {
u32 l;
prcm_offs = OMAP3430_GR_MOD;
- l = ('B' << 24) | ('M' << 16) | mode;
+ l = ('B' << 24) | ('M' << 16) | (cmd ? (u8)*cmd : 0);
/* Reserve the first word in scratchpad for communicating
* with the boot ROM. A pointer to a data structure
* describing the boot process can be stored there,
* cf. OMAP34xx TRM, Initialization / Software Booting
* Configuration. */
omap_writel(l, OMAP343X_SCRATCHPAD + 4);
- } else
+ } else if (cpu_is_omap44xx())
+ prcm_offs = OMAP4430_PRM_DEVICE_MOD;
+ else
WARN_ON(1);
- prm_set_mod_reg_bits(OMAP_RST_DPLL3, prcm_offs, RM_RSTCTRL);
+ if (cpu_is_omap24xx() || cpu_is_omap34xx())
+ prm_set_mod_reg_bits(OMAP_RST_DPLL3, prcm_offs,
+ OMAP2_RM_RSTCTRL);
+ if (cpu_is_omap44xx())
+ prm_set_mod_reg_bits(OMAP_RST_DPLL3, prcm_offs,
+ OMAP4_RM_RSTCTRL);
}
static inline u32 __omap_prcm_read(void __iomem *base, s16 module, u16 reg)
@@ -188,6 +203,18 @@ u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
return v;
}
+/* Read a PRM register, AND it, and shift the result down to bit 0 */
+u32 prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
+{
+ u32 v;
+
+ v = prm_read_mod_reg(domain, idx);
+ v &= mask;
+ v >>= __ffs(mask);
+
+ return v;
+}
+
/* Read a register in a CM module */
u32 cm_read_mod_reg(s16 module, u16 idx)
{
@@ -217,26 +244,22 @@ u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
* omap2_cm_wait_idlest - wait for IDLEST bit to indicate module readiness
* @reg: physical address of module IDLEST register
* @mask: value to mask against to determine if the module is active
+ * @idlest: idle state indicator (0 or 1) for the clock
* @name: name of the clock (for printk)
*
* Returns 1 if the module indicated readiness in time, or 0 if it
* failed to enable in roughly MAX_MODULE_ENABLE_WAIT microseconds.
*/
-int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, const char *name)
+int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
+ const char *name)
{
int i = 0;
int ena = 0;
- /*
- * 24xx uses 0 to indicate not ready, and 1 to indicate ready.
- * 34xx reverses this, just to keep us on our toes
- */
- if (cpu_is_omap24xx())
- ena = mask;
- else if (cpu_is_omap34xx())
+ if (idlest)
ena = 0;
else
- BUG();
+ ena = mask;
/* Wait for lock */
omap_test_timeout(((__raw_readl(reg) & mask) == ena),
@@ -254,9 +277,19 @@ 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
@@ -280,7 +313,7 @@ void omap3_prcm_save_context(void)
prcm_context.emu_cm_clksel =
cm_read_mod_reg(OMAP3430_EMU_MOD, CM_CLKSEL1);
prcm_context.emu_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430_EMU_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430_EMU_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.pll_cm_autoidle2 =
cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE2);
prcm_context.pll_cm_clksel4 =
@@ -333,23 +366,25 @@ void omap3_prcm_save_context(void)
prcm_context.mpu_cm_autoidle2 =
cm_read_mod_reg(MPU_MOD, CM_AUTOIDLE2);
prcm_context.iva2_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.mpu_cm_clkstctrl =
- cm_read_mod_reg(MPU_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(MPU_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.core_cm_clkstctrl =
- cm_read_mod_reg(CORE_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(CORE_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.sgx_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430ES2_SGX_MOD,
+ OMAP2_CM_CLKSTCTRL);
prcm_context.dss_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430_DSS_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.cam_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430_CAM_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.per_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430_PER_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430_PER_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.neon_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430_NEON_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430_NEON_MOD, OMAP2_CM_CLKSTCTRL);
prcm_context.usbhost_cm_clkstctrl =
- cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_CLKSTCTRL);
+ cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
+ OMAP2_CM_CLKSTCTRL);
prcm_context.core_cm_autoidle1 =
cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE1);
prcm_context.core_cm_autoidle2 =
@@ -432,7 +467,7 @@ void omap3_prcm_restore_context(void)
cm_write_mod_reg(prcm_context.emu_cm_clksel, OMAP3430_EMU_MOD,
CM_CLKSEL1);
cm_write_mod_reg(prcm_context.emu_cm_clkstctrl, OMAP3430_EMU_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.pll_cm_autoidle2, PLL_MOD,
CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.pll_cm_clksel4, PLL_MOD,
@@ -478,22 +513,23 @@ void omap3_prcm_restore_context(void)
CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.mpu_cm_autoidle2, MPU_MOD, CM_AUTOIDLE2);
cm_write_mod_reg(prcm_context.iva2_cm_clkstctrl, OMAP3430_IVA2_MOD,
- CM_CLKSTCTRL);
- cm_write_mod_reg(prcm_context.mpu_cm_clkstctrl, MPU_MOD, CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
+ cm_write_mod_reg(prcm_context.mpu_cm_clkstctrl, MPU_MOD,
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.core_cm_clkstctrl, CORE_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.sgx_cm_clkstctrl, OMAP3430ES2_SGX_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.dss_cm_clkstctrl, OMAP3430_DSS_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.cam_cm_clkstctrl, OMAP3430_CAM_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.per_cm_clkstctrl, OMAP3430_PER_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.neon_cm_clkstctrl, OMAP3430_NEON_MOD,
- CM_CLKSTCTRL);
+ OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.usbhost_cm_clkstctrl,
- OMAP3430ES2_USBHOST_MOD, CM_CLKSTCTRL);
+ OMAP3430ES2_USBHOST_MOD, OMAP2_CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.core_cm_autoidle1, CORE_MOD,
CM_AUTOIDLE1);
cm_write_mod_reg(prcm_context.core_cm_autoidle2, CORE_MOD,
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-23 18:46:57 +0000