Merge tag 'tegra-for-4.7-soc' of...

Merge tag 'tegra-for-4.7-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

Merge "soc/tegra: Changes for v4.7-rc1" from Thierry Reding:

This contains a bunch of preparatory patches to the PMC driver which are
a prerequisite to moving the driver to generic power domains.

* tag 'tegra-for-4.7-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  dt-bindings: Update NVIDIA PMC for Tegra
  soc/tegra: pmc: Wait for powergate state to change
  soc/tegra: pmc: Ensure GPU partition can be toggled on/off by PMC
  soc/tegra: pmc: Remove additional check for a valid partition
  soc/tegra: pmc: Fix verification of valid partitions
  soc/tegra: pmc: Fix testing of powergate state
  soc/tegra: pmc: Change powergate and rail IDs to be an unsigned type
  soc/tegra: pmc: Protect public functions from potential race conditions
  soc/tegra: pmc: Restore base address on probe failure
  soc/tegra: pmc: Remove non-existing L2 partition for Tegra124
  soc/tegra: pmc: Remove non-existing power partitions for Tegra210
  soc/tegra: pmc: Remove debugfs entry on probe failure
  soc/tegra: pmc: Fix sparse warning for tegra_pmc_init_tsense_reset()
  soc/tegra: pmc: Add missing structure members to kernel-doc

Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt

@@ -6,11 +6,13 @@ modes. It provides power-gating controllers for SoC and CPU power-islands.
 
 Required properties:
 - name : Should be pmc
-- compatible : For Tegra20, must contain "nvidia,tegra20-pmc".  For Tegra30,
-  must contain "nvidia,tegra30-pmc".  For Tegra114, must contain
-  "nvidia,tegra114-pmc".  For Tegra124, must contain "nvidia,tegra124-pmc".
-  Otherwise, must contain "nvidia,<chip>-pmc", plus at least one of the
-  above, where <chip> is tegra132.
+- compatible : Should contain one of the following:
+	For Tegra20 must contain "nvidia,tegra20-pmc".
+	For Tegra30 must contain "nvidia,tegra30-pmc".
+	For Tegra114 must contain "nvidia,tegra114-pmc"
+	For Tegra124 must contain "nvidia,tegra124-pmc"
+	For Tegra132 must contain "nvidia,tegra124-pmc"
+	For Tegra210 must contain "nvidia,tegra210-pmc"
 - reg : Offset and length of the register set for the device
 - clocks : Must contain an entry for each entry in clock-names.
   See ../clocks/clock-bindings.txt for details.

arch/arm/mach-tegra/platsmp.c

@@ -108,19 +108,9 @@ static int tegra30_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	 * be un-gated by un-toggling the power gate register
 	 * manually.
 	 */
-	if (!tegra_pmc_cpu_is_powered(cpu)) {
-		ret = tegra_pmc_cpu_power_on(cpu);
-		if (ret)
-			return ret;
-
-		/* Wait for the power to come up. */
-		timeout = jiffies + msecs_to_jiffies(100);
-		while (!tegra_pmc_cpu_is_powered(cpu)) {
-			if (time_after(jiffies, timeout))
-				return -ETIMEDOUT;
-			udelay(10);
-		}
-	}
+	ret = tegra_pmc_cpu_power_on(cpu);
+	if (ret)
+		return ret;
 
 remove_clamps:
 	/* CPU partition is powered. Enable the CPU clock. */

drivers/gpu/drm/tegra/drm.h

@@ -121,7 +121,7 @@ struct tegra_dc {
 	spinlock_t lock;
 
 	struct drm_crtc base;
-	int powergate;
+	unsigned int powergate;
 	int pipe;
 
 	struct clk *clk;

include/soc/tegra/pmc.h

@@ -33,9 +33,9 @@ void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode);
 #endif /* CONFIG_PM_SLEEP */
 
 #ifdef CONFIG_SMP
-bool tegra_pmc_cpu_is_powered(int cpuid);
-int tegra_pmc_cpu_power_on(int cpuid);
-int tegra_pmc_cpu_remove_clamping(int cpuid);
+bool tegra_pmc_cpu_is_powered(unsigned int cpuid);
+int tegra_pmc_cpu_power_on(unsigned int cpuid);
+int tegra_pmc_cpu_remove_clamping(unsigned int cpuid);
 #endif /* CONFIG_SMP */
 
 /*
@@ -108,50 +108,51 @@ int tegra_pmc_cpu_remove_clamping(int cpuid);
 #define TEGRA_IO_RAIL_SYS_DDC	58
 
 #ifdef CONFIG_ARCH_TEGRA
-int tegra_powergate_is_powered(int id);
-int tegra_powergate_power_on(int id);
-int tegra_powergate_power_off(int id);
-int tegra_powergate_remove_clamping(int id);
+int tegra_powergate_is_powered(unsigned int id);
+int tegra_powergate_power_on(unsigned int id);
+int tegra_powergate_power_off(unsigned int id);
+int tegra_powergate_remove_clamping(unsigned int id);
 
 /* Must be called with clk disabled, and returns with clk enabled */
-int tegra_powergate_sequence_power_up(int id, struct clk *clk,
+int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
 				      struct reset_control *rst);
 
-int tegra_io_rail_power_on(int id);
-int tegra_io_rail_power_off(int id);
+int tegra_io_rail_power_on(unsigned int id);
+int tegra_io_rail_power_off(unsigned int id);
 #else
-static inline int tegra_powergate_is_powered(int id)
+static inline int tegra_powergate_is_powered(unsigned int id)
 {
 	return -ENOSYS;
 }
 
-static inline int tegra_powergate_power_on(int id)
+static inline int tegra_powergate_power_on(unsigned int id)
 {
 	return -ENOSYS;
 }
 
-static inline int tegra_powergate_power_off(int id)
+static inline int tegra_powergate_power_off(unsigned int id)
 {
 	return -ENOSYS;
 }
 
-static inline int tegra_powergate_remove_clamping(int id)
+static inline int tegra_powergate_remove_clamping(unsigned int id)
 {
 	return -ENOSYS;
 }
 
-static inline int tegra_powergate_sequence_power_up(int id, struct clk *clk,
+static inline int tegra_powergate_sequence_power_up(unsigned int id,
+						    struct clk *clk,
 						    struct reset_control *rst)
 {
 	return -ENOSYS;
 }
 
-static inline int tegra_io_rail_power_on(int id)
+static inline int tegra_io_rail_power_on(unsigned int id)
 {
 	return -ENOSYS;
 }
 
-static inline int tegra_io_rail_power_off(int id)
+static inline int tegra_io_rail_power_off(unsigned int id)
 {
 	return -ENOSYS;
 }