Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

17 files changed, 66 insertions, 40 deletions

diff --git a/arch/arm/mach-omap2/am33xx-restart.c b/arch/arm/mach-omap2/am33xx-restart.c
index ef2f18a56b..fcf3d557aa 100644
--- a/arch/arm/mach-omap2/am33xx-restart.c
+++ b/arch/arm/mach-omap2/am33xx-restart.c
@@ -9,7 +9,7 @@
 #include "prm.h"
 
 /**
- * am3xx_restart - trigger a software restart of the SoC
+ * am33xx_restart - trigger a software restart of the SoC
  * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
  * @cmd: passed from the userspace program rebooting the system (if provided)
  *
@@ -18,7 +18,8 @@
  */
 void am33xx_restart(enum reboot_mode mode, const char *cmd)
 {
-	/* TODO: Handle mode and cmd if necessary */
+	/* TODO: Handle cmd if necessary */
+	prm_reboot_mode = mode;
 
 	omap_prm_reset_system();
 }
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index fde6ccb3df..68e0baad2b 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -246,6 +246,12 @@ DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
 	.init_time	= omap_init_time_of,
 	.dt_compat	= am33xx_boards_compat,
 	.restart	= am33xx_restart,
+	/*
+	 * Historically am33xx supported only REBOOT_WARM even though default
+	 * reboot_mode was REBOOT_COLD. Reflect legacy de-facto behaviour in
+	 * SYSFS.
+	 */
+	.reboot_mode	= REBOOT_WARM,
 MACHINE_END
 #endif
 
diff --git a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
index be4557d1fd..011076a595 100644
--- a/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
+++ b/arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c
@@ -162,7 +162,7 @@ static int omap2_select_table_rate(struct clk_hw *hw, unsigned long rate,
 }
 
 /**
- * omap2xxx_clkt_vps_check_bootloader_rate - determine which of the rate
+ * omap2xxx_clkt_vps_check_bootloader_rates - determine which of the rate
  * table sets matches the current CORE DPLL hardware rate
  *
  * Check the MPU rate set by bootloader.  Sets the 'curr_prcm_set'
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index d145e7ac70..69dc5b8393 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -990,7 +990,7 @@ void clkdm_allow_idle(struct clockdomain *clkdm)
 }
 
 /**
- * clkdm_deny_idle - disable hwsup idle transitions for clkdm
+ * clkdm_deny_idle_nolock - disable hwsup idle transitions for clkdm
  * @clkdm: struct clockdomain *
  *
  * Prevent the hardware from automatically switching the clockdomain
@@ -1110,7 +1110,7 @@ void clkdm_del_autodeps(struct clockdomain *clkdm)
 /**
  * clkdm_clk_enable - add an enabled downstream clock to this clkdm
  * @clkdm: struct clockdomain *
- * @clk: struct clk * of the enabled downstream clock
+ * @unused: struct clk * of the enabled downstream clock
  *
  * Increment the usecount of the clockdomain @clkdm and ensure that it
  * is awake before @clk is enabled.  Intended to be called by
diff --git a/arch/arm/mach-omap2/cm33xx.c b/arch/arm/mach-omap2/cm33xx.c
index c824d4e3db..acdf72a541 100644
--- a/arch/arm/mach-omap2/cm33xx.c
+++ b/arch/arm/mach-omap2/cm33xx.c
@@ -357,7 +357,7 @@ static int am33xx_clkdm_save_context(struct clockdomain *clkdm)
 }
 
 /**
- * am33xx_restore_save_context - Restore the clockdomain transition context
+ * am33xx_clkdm_restore_context - Restore the clockdomain transition context
  * @clkdm: The clockdomain pointer whose context needs to be restored
  *
  * Restore the clockdomain transition context.
diff --git a/arch/arm/mach-omap2/cminst44xx.c b/arch/arm/mach-omap2/cminst44xx.c
index 46670521b2..49483a8880 100644
--- a/arch/arm/mach-omap2/cminst44xx.c
+++ b/arch/arm/mach-omap2/cminst44xx.c
@@ -237,7 +237,7 @@ static void omap4_cminst_clkdm_disable_hwsup(u8 part, u16 inst, u16 cdoffs)
 }
 
 /**
- * omap4_cminst_clkdm_force_sleep - try to take a clockdomain out of idle
+ * omap4_cminst_clkdm_force_wakeup - try to take a clockdomain out of idle
  * @part: PRCM partition ID that the clockdomain registers exist in
  * @inst: CM instance register offset (*_INST macro)
  * @cdoffs: Clockdomain register offset (*_CDOFFS macro)
diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c
index 29c7350b06..c2e1aecd07 100644
--- a/arch/arm/mach-omap2/omap-secure.c
+++ b/arch/arm/mach-omap2/omap-secure.c
@@ -47,7 +47,7 @@ static void __init omap_optee_init_check(void)
 }
 
 /**
- * omap_sec_dispatcher: Routine to dispatch low power secure
+ * omap_secure_dispatcher - Routine to dispatch low power secure
  * service routines
  * @idx: The HAL API index
  * @flag: The flag indicating criticality of operation
@@ -183,7 +183,7 @@ static u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs,
 /**
  * rx51_secure_update_aux_cr: Routine to modify the contents of Auxiliary Control Register
  *  @set_bits: bits to set in ACR
- *  @clr_bits: bits to clear in ACR
+ *  @clear_bits: bits to clear in ACR
  *
  * Return the non-zero error value on failure.
 */
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index ba71928c0f..111677878d 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -900,7 +900,7 @@ static int _init_interface_clks(struct omap_hwmod *oh)
 }
 
 /**
- * _init_opt_clk - get a struct clk * for the hwmod's optional clocks
+ * _init_opt_clks - get a struct clk * for the hwmod's optional clocks
  * @oh: struct omap_hwmod *
  *
  * Called from _init_clocks().  Populates the @oh omap_hwmod_opt_clk
@@ -2297,7 +2297,7 @@ static void __init parse_module_flags(struct omap_hwmod *oh,
 /**
  * _init - initialize internal data for the hwmod @oh
  * @oh: struct omap_hwmod *
- * @n: (unused)
+ * @data: (unused)
  *
  * Look up the clocks and the address space used by the MPU to access
  * registers belonging to the hwmod @oh.  @oh must already be
@@ -2493,7 +2493,7 @@ static void _setup_postsetup(struct omap_hwmod *oh)
 /**
  * _setup - prepare IP block hardware for use
  * @oh: struct omap_hwmod *
- * @n: (unused, pass NULL)
+ * @data: (unused, pass NULL)
  *
  * Configure the IP block represented by @oh.  This may include
  * enabling the IP block, resetting it, and placing it into a
@@ -3367,8 +3367,9 @@ static int omap_hwmod_check_module(struct device *dev,
  * omap_hwmod_allocate_module - allocate new module
  * @dev: struct device
  * @oh: module
+ * @data: module data
  * @sysc_fields: sysc register bits
- * @clockdomain: clockdomain
+ * @clkdm: clockdomain
  * @rev_offs: revision register offset
  * @sysc_offs: sysconfig register offset
  * @syss_offs: sysstatus register offset
diff --git a/arch/arm/mach-omap2/omap_hwmod_common_data.c b/arch/arm/mach-omap2/omap_hwmod_common_data.c
index 246f1e5da9..439232233c 100644
--- a/arch/arm/mach-omap2/omap_hwmod_common_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_common_data.c
@@ -20,7 +20,7 @@
 
 #include "omap_hwmod_common_data.h"
 
-/**
+/*
  * struct omap_hwmod_sysc_type1 - TYPE1 sysconfig scheme.
  *
  * To be used by hwmod structure to specify the sysconfig offsets
@@ -36,7 +36,7 @@ struct sysc_regbits omap_hwmod_sysc_type1 = {
 	.autoidle_shift	= SYSC_TYPE1_AUTOIDLE_SHIFT,
 };
 
-/**
+/*
  * struct omap_hwmod_sysc_type2 - TYPE2 sysconfig scheme.
  *
  * To be used by hwmod structure to specify the sysconfig offsets if the
@@ -50,7 +50,7 @@ struct sysc_regbits omap_hwmod_sysc_type2 = {
 	.dmadisable_shift = SYSC_TYPE2_DMADISABLE_SHIFT,
 };
 
-/**
+/*
  * struct omap_hwmod_sysc_type3 - TYPE3 sysconfig scheme.
  * Used by some IPs on AM33xx
  */
diff --git a/arch/arm/mach-omap2/pmic-cpcap.c b/arch/arm/mach-omap2/pmic-cpcap.c
index 668dc84fd3..4f31e61c0c 100644
--- a/arch/arm/mach-omap2/pmic-cpcap.c
+++ b/arch/arm/mach-omap2/pmic-cpcap.c
@@ -18,10 +18,10 @@
 #include "vc.h"
 
 /**
- * omap_cpcap_vsel_to_vdc - convert CPCAP VSEL value to microvolts DC
+ * omap_cpcap_vsel_to_uv - convert CPCAP VSEL value to microvolts DC
  * @vsel: CPCAP VSEL value to convert
  *
- * Returns the microvolts DC that the CPCAP PMIC should generate when
+ * Returns: the microvolts DC that the CPCAP PMIC should generate when
  * programmed with @vsel.
  */
 static unsigned long omap_cpcap_vsel_to_uv(unsigned char vsel)
@@ -35,7 +35,7 @@ static unsigned long omap_cpcap_vsel_to_uv(unsigned char vsel)
  * omap_cpcap_uv_to_vsel - convert microvolts DC to CPCAP VSEL value
  * @uv: microvolts DC to convert
  *
- * Returns the VSEL value necessary for the CPCAP PMIC to
+ * Returns: the VSEL value necessary for the CPCAP PMIC to
  * generate an output voltage equal to or greater than @uv microvolts DC.
  */
 static unsigned char omap_cpcap_uv_to_vsel(unsigned long uv)
@@ -82,10 +82,10 @@ static struct omap_voltdm_pmic omap_cpcap_iva = {
 };
 
 /**
- * omap_max8952_vsel_to_vdc - convert MAX8952 VSEL value to microvolts DC
+ * omap_max8952_vsel_to_uv - convert MAX8952 VSEL value to microvolts DC
  * @vsel: MAX8952 VSEL value to convert
  *
- * Returns the microvolts DC that the MAX8952 Regulator should generate when
+ * Returns: the microvolts DC that the MAX8952 Regulator should generate when
  * programmed with @vsel.
  */
 static unsigned long omap_max8952_vsel_to_uv(unsigned char vsel)
@@ -99,7 +99,7 @@ static unsigned long omap_max8952_vsel_to_uv(unsigned char vsel)
  * omap_max8952_uv_to_vsel - convert microvolts DC to MAX8952 VSEL value
  * @uv: microvolts DC to convert
  *
- * Returns the VSEL value necessary for the MAX8952 Regulator to
+ * Returns: the VSEL value necessary for the MAX8952 Regulator to
  * generate an output voltage equal to or greater than @uv microvolts DC.
  */
 static unsigned char omap_max8952_uv_to_vsel(unsigned long uv)
@@ -129,10 +129,10 @@ static struct omap_voltdm_pmic omap443x_max8952_mpu = {
 };
 
 /**
- * omap_fan5355_vsel_to_vdc - convert FAN535503 VSEL value to microvolts DC
+ * omap_fan535503_vsel_to_uv - convert FAN535503 VSEL value to microvolts DC
  * @vsel: FAN535503 VSEL value to convert
  *
- * Returns the microvolts DC that the FAN535503 Regulator should generate when
+ * Returns: the microvolts DC that the FAN535503 Regulator should generate when
  * programmed with @vsel.
  */
 static unsigned long omap_fan535503_vsel_to_uv(unsigned char vsel)
@@ -144,10 +144,10 @@ static unsigned long omap_fan535503_vsel_to_uv(unsigned char vsel)
 }
 
 /**
- * omap_fan535508_vsel_to_vdc - convert FAN535508 VSEL value to microvolts DC
+ * omap_fan535508_vsel_to_uv - convert FAN535508 VSEL value to microvolts DC
  * @vsel: FAN535508 VSEL value to convert
  *
- * Returns the microvolts DC that the FAN535508 Regulator should generate when
+ * Returns: the microvolts DC that the FAN535508 Regulator should generate when
  * programmed with @vsel.
  */
 static unsigned long omap_fan535508_vsel_to_uv(unsigned char vsel)
@@ -165,7 +165,7 @@ static unsigned long omap_fan535508_vsel_to_uv(unsigned char vsel)
  * omap_fan535503_uv_to_vsel - convert microvolts DC to FAN535503 VSEL value
  * @uv: microvolts DC to convert
  *
- * Returns the VSEL value necessary for the MAX8952 Regulator to
+ * Returns: the VSEL value necessary for the MAX8952 Regulator to
  * generate an output voltage equal to or greater than @uv microvolts DC.
  */
 static unsigned char omap_fan535503_uv_to_vsel(unsigned long uv)
@@ -184,7 +184,7 @@ static unsigned char omap_fan535503_uv_to_vsel(unsigned long uv)
  * omap_fan535508_uv_to_vsel - convert microvolts DC to FAN535508 VSEL value
  * @uv: microvolts DC to convert
  *
- * Returns the VSEL value necessary for the MAX8952 Regulator to
+ * Returns: the VSEL value necessary for the MAX8952 Regulator to
  * generate an output voltage equal to or greater than @uv microvolts DC.
  */
 static unsigned char omap_fan535508_uv_to_vsel(unsigned long uv)
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 5e05dd1324..2441d96b71 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -1162,7 +1162,7 @@ static int pwrdm_save_context(struct powerdomain *pwrdm, void *unused)
 }
 
 /**
- * pwrdm_save_context - restore powerdomain registers
+ * pwrdm_restore_context - restore powerdomain registers
  *
  * Restore powerdomain control registers after a suspend or resume
  * event.
diff --git a/arch/arm/mach-omap2/prm-regbits-33xx.h b/arch/arm/mach-omap2/prm-regbits-33xx.h
index 3748c5266a..9b97f8c76c 100644
--- a/arch/arm/mach-omap2/prm-regbits-33xx.h
+++ b/arch/arm/mach-omap2/prm-regbits-33xx.h
@@ -15,6 +15,7 @@
 #define AM33XX_GFX_MEM_STATEST_MASK			(0x3 << 4)
 #define AM33XX_GLOBAL_WARM_SW_RST_MASK			(1 << 1)
 #define AM33XX_RST_GLOBAL_WARM_SW_MASK			(1 << 0)
+#define AM33XX_RST_GLOBAL_COLD_SW_MASK			(1 << 1)
 #define AM33XX_PRUSS_MEM_ONSTATE_MASK			(0x3 << 5)
 #define AM33XX_PRUSS_MEM_RETSTATE_MASK			(1 << 7)
 #define AM33XX_PRUSS_MEM_STATEST_MASK			(0x3 << 23)
diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index fc45a7ed09..fc53a27eed 100644
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -15,6 +15,7 @@
 # ifndef __ASSEMBLER__
 extern struct omap_domain_base prm_base;
 extern u16 prm_features;
+extern enum reboot_mode prm_reboot_mode;
 int omap_prcm_init(void);
 int omap2_prcm_base_init(void);
 # endif
diff --git a/arch/arm/mach-omap2/prm33xx.c b/arch/arm/mach-omap2/prm33xx.c
index 4b65a0f9cf..505d685d67 100644
--- a/arch/arm/mach-omap2/prm33xx.c
+++ b/arch/arm/mach-omap2/prm33xx.c
@@ -10,15 +10,12 @@
 #include <linux/errno.h>
 #include <linux/err.h>
 #include <linux/io.h>
+#include <linux/reboot.h>
 
 #include "powerdomain.h"
 #include "prm33xx.h"
 #include "prm-regbits-33xx.h"
 
-#define AM33XX_PRM_RSTCTRL_OFFSET		0x0000
-
-#define AM33XX_RST_GLOBAL_WARM_SW_MASK		(1 << 0)
-
 /* Read a register in a PRM instance */
 static u32 am33xx_prm_read_reg(s16 inst, u16 idx)
 {
@@ -322,10 +319,19 @@ static int am33xx_check_vcvp(void)
  *
  * Immediately reboots the device through warm reset.
  */
-static void am33xx_prm_global_warm_sw_reset(void)
+static void am33xx_prm_global_sw_reset(void)
 {
-	am33xx_prm_rmw_reg_bits(AM33XX_RST_GLOBAL_WARM_SW_MASK,
-				AM33XX_RST_GLOBAL_WARM_SW_MASK,
+	/*
+	 * Historically AM33xx performed warm reset for all requested reboot_mode.
+	 * Keep this behaviour unchanged for all except newly added REBOOT_COLD.
+	 */
+	u32 mask = AM33XX_RST_GLOBAL_WARM_SW_MASK;
+
+	if (prm_reboot_mode == REBOOT_COLD)
+		mask = AM33XX_RST_GLOBAL_COLD_SW_MASK;
+
+	am33xx_prm_rmw_reg_bits(mask,
+				mask,
 				AM33XX_PRM_DEVICE_MOD,
 				AM33XX_PRM_RSTCTRL_OFFSET);
 
@@ -386,7 +392,7 @@ static struct prm_ll_data am33xx_prm_ll_data = {
 	.assert_hardreset		= am33xx_prm_assert_hardreset,
 	.deassert_hardreset		= am33xx_prm_deassert_hardreset,
 	.is_hardreset_asserted		= am33xx_prm_is_hardreset_asserted,
-	.reset_system			= am33xx_prm_global_warm_sw_reset,
+	.reset_system			= am33xx_prm_global_sw_reset,
 };
 
 int __init am33xx_prm_init(const struct omap_prcm_init_data *data)
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c
index 25093c1e5b..6c555438dd 100644
--- a/arch/arm/mach-omap2/prm44xx.c
+++ b/arch/arm/mach-omap2/prm44xx.c
@@ -407,7 +407,7 @@ static bool omap44xx_prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx)
 }
 
 /**
- * omap44xx_prm_clear_context_lost_flags_old - clear context loss flags
+ * omap44xx_prm_clear_context_loss_flags_old - clear context loss flags
  * @part: PRM partition ID (e.g., OMAP4430_PRM_PARTITION)
  * @inst: PRM instance offset (e.g., OMAP4430_PRM_MPU_INST)
  * @idx: CONTEXT register offset
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index fd896f2295..ee4588acda 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -67,6 +67,12 @@ struct omap_domain_base prm_base;
 u16 prm_features;
 
 /*
+ * Platforms that implement different reboot modes can store the requested
+ * mode here.
+ */
+enum reboot_mode prm_reboot_mode;
+
+/*
  * prm_ll_data: function pointers to SoC-specific implementations of
  * common PRM functions
  */
@@ -370,7 +376,7 @@ bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx)
 }
 
 /**
- * prm_clear_context_lost_flags_old - clear context loss flags (old API)
+ * prm_clear_context_loss_flags_old - clear context loss flags (old API)
  * @part: PRM partition ID (e.g., OMAP4430_PRM_PARTITION)
  * @inst: PRM instance offset (e.g., OMAP4430_PRM_MPU_INST)
  * @idx: CONTEXT register offset
@@ -497,6 +503,7 @@ int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask)
 
 /**
  * omap_prm_vp_check_txdone - check voltage processor TX done status
+ * @vp_id: unique VP instance ID
  *
  * Checks if voltage processor transmission has been completed.
  * Returns non-zero if a transmission has completed, 0 otherwise.
@@ -514,6 +521,7 @@ u32 omap_prm_vp_check_txdone(u8 vp_id)
 
 /**
  * omap_prm_vp_clear_txdone - clears voltage processor TX done status
+ * @vp_id: unique VP instance ID
  *
  * Clears the status bit for completed voltage processor transmission
  * returned by prm_vp_check_txdone.
diff --git a/arch/arm/mach-omap2/wd_timer.c b/arch/arm/mach-omap2/wd_timer.c
index d4ea56a5f7..898e7e3329 100644
--- a/arch/arm/mach-omap2/wd_timer.c
+++ b/arch/arm/mach-omap2/wd_timer.c
@@ -57,7 +57,7 @@ int omap2_wd_timer_disable(struct omap_hwmod *oh)
 }
 
 /**
- * omap2_wdtimer_reset - reset and disable the WDTIMER IP block
+ * omap2_wd_timer_reset - reset and disable the WDTIMER IP block
  * @oh: struct omap_hwmod *
  *
  * After the WDTIMER IP blocks are reset on OMAP2/3, we must also take
@@ -71,6 +71,8 @@ int omap2_wd_timer_disable(struct omap_hwmod *oh)
  * during a normal merge window.  omap_hwmod_softreset() should be
  * renamed to omap_hwmod_set_ocp_softreset(), and omap_hwmod_softreset()
  * should call the hwmod _ocp_softreset() code.
+ *
+ * Returns: %0 on success or -errno value on error.
  */
 int omap2_wd_timer_reset(struct omap_hwmod *oh)
 {