2 files changed, 50 insertions, 19 deletions

diff --git a/arch/arm/mach-socfpga/include/mach/reset_manager.h b/arch/arm/mach-socfpga/include/mach/reset_manager.h
index 7e803f7..fff4c96 100644
--- a/arch/arm/mach-socfpga/include/mach/reset_manager.h
+++ b/arch/arm/mach-socfpga/include/mach/reset_manager.h
@@ -38,13 +38,44 @@ struct socfpga_reset_manager {
 #define RSTMGR_CTRL_SWWARMRSTREQ_LSB 1
 #endif
 
-#define RSTMGR_PERMODRST_EMAC0_LSB	0
-#define RSTMGR_PERMODRST_EMAC1_LSB	1
-#define RSTMGR_PERMODRST_L4WD0_LSB	6
-#define RSTMGR_PERMODRST_OSC1TIMER0_LSB	8
-#define RSTMGR_PERMODRST_UART0_LSB	16
-#define RSTMGR_PERMODRST_SPIM0_LSB	18
-#define RSTMGR_PERMODRST_SPIM1_LSB	19
-#define RSTMGR_PERMODRST_SDR_LSB	29
+/*
+ * Define a reset identifier, from which a permodrst bank ID
+ * and reset ID can be extracted using the subsequent macros
+ * RSTMGR_RESET() and RSTMGR_BANK().
+ */
+#define RSTMGR_BANK_OFFSET	8
+#define RSTMGR_BANK_MASK	0x7
+#define RSTMGR_RESET_OFFSET	0
+#define RSTMGR_RESET_MASK	0x1f
+#define RSTMGR_DEFINE(_bank, _offset)		\
+	((_bank) << RSTMGR_BANK_OFFSET) | ((_offset) << RSTMGR_RESET_OFFSET)
+
+/* Extract reset ID from the reset identifier. */
+#define RSTMGR_RESET(_reset)			\
+	(((_reset) >> RSTMGR_RESET_OFFSET) & RSTMGR_RESET_MASK)
+
+/* Extract bank ID from the reset identifier. */
+#define RSTMGR_BANK(_reset)			\
+	(((_reset) >> RSTMGR_BANK_OFFSET) & RSTMGR_BANK_MASK)
+
+/*
+ * SocFPGA Cyclone V/Arria V reset IDs, bank mapping is as follows:
+ * 0 ... mpumodrst
+ * 1 ... permodrst
+ * 2 ... per2modrst
+ * 3 ... brgmodrst
+ * 4 ... miscmodrst
+ */
+#define RSTMGR_EMAC0		RSTMGR_DEFINE(1, 0)
+#define RSTMGR_EMAC1		RSTMGR_DEFINE(1, 1)
+#define RSTMGR_L4WD0		RSTMGR_DEFINE(1, 6)
+#define RSTMGR_OSC1TIMER0	RSTMGR_DEFINE(1, 8)
+#define RSTMGR_UART0		RSTMGR_DEFINE(1, 16)
+#define RSTMGR_SPIM0		RSTMGR_DEFINE(1, 18)
+#define RSTMGR_SPIM1		RSTMGR_DEFINE(1, 19)
+#define RSTMGR_SDR		RSTMGR_DEFINE(1, 29)
+
+/* Create a human-readable reference to SoCFPGA reset. */
+#define SOCFPGA_RESET(_name)	RSTMGR_##_name
 
 #endif /* _RESET_MANAGER_H_ */
diff --git a/arch/arm/mach-socfpga/reset_manager.c b/arch/arm/mach-socfpga/reset_manager.c
index 45b352b..8ede779 100644
--- a/arch/arm/mach-socfpga/reset_manager.c
+++ b/arch/arm/mach-socfpga/reset_manager.c
@@ -20,11 +20,11 @@ void socfpga_watchdog_reset(void)
 {
 	/* assert reset for watchdog */
 	setbits_le32(&reset_manager_base->per_mod_reset,
-		     1 << RSTMGR_PERMODRST_L4WD0_LSB);
+		     1 << RSTMGR_RESET(SOCFPGA_RESET(L4WD0)));
 
 	/* deassert watchdog from reset (watchdog in not running state) */
 	clrbits_le32(&reset_manager_base->per_mod_reset,
-		     1 << RSTMGR_PERMODRST_L4WD0_LSB);
+		     1 << RSTMGR_RESET(SOCFPGA_RESET(L4WD0)));
 }
 
 /*
@@ -94,13 +94,13 @@ void socfpga_emac_reset(int enable)
 	const void *reset = &reset_manager_base->per_mod_reset;
 
 	if (enable) {
-		setbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC0_LSB);
-		setbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC1_LSB);
+		setbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(EMAC0)));
+		setbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(EMAC1)));
 	} else {
 #if (CONFIG_EMAC_BASE == SOCFPGA_EMAC0_ADDRESS)
-		clrbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC0_LSB);
+		clrbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(EMAC0)));
 #elif (CONFIG_EMAC_BASE == SOCFPGA_EMAC1_ADDRESS)
-		clrbits_le32(reset, 1 << RSTMGR_PERMODRST_EMAC1_LSB);
+		clrbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(EMAC1)));
 #endif
 	}
 }
@@ -110,8 +110,8 @@ void socfpga_spim_enable(void)
 {
 	const void *reset = &reset_manager_base->per_mod_reset;
 
-	clrbits_le32(reset, (1 << RSTMGR_PERMODRST_SPIM0_LSB) |
-		     (1 << RSTMGR_PERMODRST_SPIM1_LSB));
+	clrbits_le32(reset, (1 << RSTMGR_RESET(SOCFPGA_RESET(SPIM0))) |
+		     (1 << RSTMGR_RESET(SOCFPGA_RESET(SPIM1))));
 }
 
 /* Bring UART0 out of reset. */
@@ -119,7 +119,7 @@ void socfpga_uart0_enable(void)
 {
 	const void *reset = &reset_manager_base->per_mod_reset;
 
-	clrbits_le32(reset, 1 << RSTMGR_PERMODRST_UART0_LSB);
+	clrbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(UART0)));
 }
 
 /* Bring SDRAM controller out of reset. */
@@ -127,7 +127,7 @@ void socfpga_sdram_enable(void)
 {
 	const void *reset = &reset_manager_base->per_mod_reset;
 
-	clrbits_le32(reset, 1 << RSTMGR_PERMODRST_SDR_LSB);
+	clrbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(SDR)));
 }
 
 /* Bring OSC1 timer out of reset. */
@@ -135,5 +135,5 @@ void socfpga_osc1timer_enable(void)
 {
 	const void *reset = &reset_manager_base->per_mod_reset;
 
-	clrbits_le32(reset, 1 << RSTMGR_PERMODRST_OSC1TIMER0_LSB);
+	clrbits_le32(reset, 1 << RSTMGR_RESET(SOCFPGA_RESET(OSC1TIMER0)));
 }