Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups on various subarchitectures from Olof Johansson:
 "Cleanup patches for various ARM platforms and some of their associated
  drivers.  There's also a branch in here that enables Freescale i.MX to
  be part of the multiplatform support -- the first "big" SoC that is
  moved over (more multiplatform work comes in a separate branch later
  during the merge window)."

Conflicts fixed as per Olof, including a silent semantic one in
arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to
omap3xxx_restart(), and a new user of the old name was added).

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits)
  ARM: omap: fix typo on timer cleanup
  ARM: EXYNOS: Remove unused regs-mem.h file
  ARM: EXYNOS: Remove unused non-dt support for dwmci controller
  ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan
  ARM: OMAP3: cm-t3517: use GPTIMER for system clock
  ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER
  ARM: SAMSUNG: use devm_ functions for ADC driver
  ARM: EXYNOS: no duplicate mask/unmask in eint0_15
  ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443
  ARM: EXYNOS: Remove i2c0 resource information and setting of device names
  ARM: Kirkwood: checkpatch cleanups
  ARM: Kirkwood: Fix sparse warnings.
  ARM: Kirkwood: Remove unused includes
  ARM: kirkwood: cleanup lsxl board includes
  ARM: integrator: use BUG_ON where possible
  ARM: integrator: push down SC dependencies
  ARM: integrator: delete static UART1 mapping
  ARM: integrator: delete SC mapping on the CP
  ARM: integrator: remove static CP syscon mapping
  ARM: integrator: remove static AP syscon mapping
  ...

1 files changed, 53 insertions, 4 deletions

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 9205ea7d8dde..e381d991092c 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -26,17 +26,24 @@
 
 #include <asm/cpu.h>
 
-#include <plat/prcm.h>
 
 #include <trace/events/power.h>
 
 #include "soc.h"
 #include "clockdomain.h"
 #include "clock.h"
+#include "cm.h"
 #include "cm2xxx.h"
 #include "cm3xxx.h"
 #include "cm-regbits-24xx.h"
 #include "cm-regbits-34xx.h"
+#include "common.h"
+
+/*
+ * MAX_MODULE_ENABLE_WAIT: maximum of number of microseconds to wait
+ * for a module to indicate that it is no longer in idle
+ */
+#define MAX_MODULE_ENABLE_WAIT          100000
 
 u16 cpu_mask;
 
@@ -58,6 +65,40 @@ static DEFINE_SPINLOCK(clockfw_lock);
 
 /* Private functions */
 
+
+/**
+ * _wait_idlest_generic - wait for a module to leave the idle state
+ * @reg: virtual 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)
+ *
+ * Wait for a module to leave idle, where its idle-status register is
+ * not inside the CM module.  Returns 1 if the module left idle
+ * promptly, or 0 if the module did not leave idle before the timeout
+ * elapsed.  XXX Deprecated - should be moved into drivers for the
+ * individual IP block that the IDLEST register exists in.
+ */
+static int _wait_idlest_generic(void __iomem *reg, u32 mask, u8 idlest,
+                                const char *name)
+{
+        int i = 0, ena = 0;
+
+        ena = (idlest) ? 0 : mask;
+
+        omap_test_timeout(((__raw_readl(reg) & mask) == ena),
+                          MAX_MODULE_ENABLE_WAIT, i);
+
+        if (i < MAX_MODULE_ENABLE_WAIT)
+                pr_debug("omap clock: module associated with clock %s ready after %d loops\n",
+                         name, i);
+        else
+                pr_err("omap clock: module associated with clock %s didn't enable in %d tries\n",
+                       name, MAX_MODULE_ENABLE_WAIT);
+
+        return (i < MAX_MODULE_ENABLE_WAIT) ? 1 : 0;
+};
+
 /**
  * _omap2_module_wait_ready - wait for an OMAP module to leave IDLE
  * @clk: struct clk * belonging to the module
@@ -71,7 +112,9 @@ static DEFINE_SPINLOCK(clockfw_lock);
 static void _omap2_module_wait_ready(struct clk *clk)
 {
         void __iomem *companion_reg, *idlest_reg;
-        u8 other_bit, idlest_bit, idlest_val;
+        u8 other_bit, idlest_bit, idlest_val, idlest_reg_id;
+        s16 prcm_mod;
+        int r;
 
         /* Not all modules have multiple clocks that their IDLEST depends on */
         if (clk->ops->find_companion) {
@@ -82,8 +125,14 @@ static void _omap2_module_wait_ready(struct clk *clk)
 
         clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit, &idlest_val);
 
-        omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), idlest_val,
-                             __clk_get_name(clk));
+        r = cm_split_idlest_reg(idlest_reg, &prcm_mod, &idlest_reg_id);
+        if (r) {
+                /* IDLEST register not in the CM module */
+                _wait_idlest_generic(idlest_reg, (1 << idlest_bit), idlest_val,
+                                     clk->name);
+        } else {
+                cm_wait_module_ready(prcm_mod, idlest_reg_id, idlest_bit);
+        };
 }
 
 /* Public functions */