svn commit: r259743 - head/sys/arm/ti/am335x
Ian Lepore
ian at FreeBSD.org
Sun Dec 22 21:35:19 UTC 2013
Author: ian
Date: Sun Dec 22 21:35:18 2013
New Revision: 259743
URL: http://svnweb.freebsd.org/changeset/base/259743
Log:
Map out all the timer-related registers, and define named constants for
the bits within the registers.
Modified:
head/sys/arm/ti/am335x/am335x_dmtimer.c
Modified: head/sys/arm/ti/am335x/am335x_dmtimer.c
==============================================================================
--- head/sys/arm/ti/am335x/am335x_dmtimer.c Sun Dec 22 21:18:21 2013 (r259742)
+++ head/sys/arm/ti/am335x/am335x_dmtimer.c Sun Dec 22 21:35:18 2013 (r259743)
@@ -51,26 +51,49 @@ __FBSDID("$FreeBSD$");
#include <arm/ti/ti_prcm.h>
-#define AM335X_NUM_TIMERS 8
+#define AM335X_NUM_TIMERS 8
-#define DMT_TIDR 0x00 /* Identification Register */
-#define DMT_TIOCP_CFG 0x10 /* Timer OCP Configuration Reg */
-#define DMT_IQR_EOI 0x20 /* Timer IRQ End-Of-Interrupt Reg */
-#define DMT_IRQSTATUS_RAW 0x24 /* Timer IRQSTATUS Raw Reg */
-#define DMT_IRQSTATUS 0x28 /* Timer IRQSTATUS Reg */
-#define DMT_IRQENABLE_SET 0x2c /* Timer IRQSTATUS Set Reg */
-#define DMT_IRQENABLE_CLR 0x30 /* Timer IRQSTATUS Clear Reg */
-#define DMT_IRQWAKEEN 0x34 /* Timer IRQ Wakeup Enable Reg */
-#define DMT_TCLR 0x38 /* Timer Control Register */
-#define DMT_TCRR 0x3C /* Timer Counter Register */
-#define DMT_TLDR 0x40 /* Timer Load Reg */
-#define DMT_TTGR 0x44 /* Timer Trigger Reg */
-#define DMT_TWPS 0x48 /* Timer Write Posted Status Reg */
-#define DMT_TMAR 0x4C /* Timer Match Reg */
-#define DMT_TCAR1 0x50 /* Timer Capture Reg */
-#define DMT_TSICR 0x54 /* Timer Synchr. Interface Control Reg */
-#define DMT_TCAR2 0x48 /* Timer Capture Reg */
-
+#define DMT_TIDR 0x00 /* Identification Register */
+#define DMT_TIOCP_CFG 0x10 /* OCP Configuration Reg */
+#define DMT_TIOCP_RESET (1 << 0) /* TIOCP perform soft reset */
+#define DMT_IQR_EOI 0x20 /* IRQ End-Of-Interrupt Reg */
+#define DMT_IRQSTATUS_RAW 0x24 /* IRQSTATUS Raw Reg */
+#define DMT_IRQSTATUS 0x28 /* IRQSTATUS Reg */
+#define DMT_IRQENABLE_SET 0x2c /* IRQSTATUS Set Reg */
+#define DMT_IRQENABLE_CLR 0x30 /* IRQSTATUS Clear Reg */
+#define DMT_IRQWAKEEN 0x34 /* IRQ Wakeup Enable Reg */
+#define DMT_IRQ_TCAR (1 << 0) /* IRQ: Capture */
+#define DMT_IRQ_OVF (1 << 1) /* IRQ: Overflow */
+#define DMT_IRQ_MAT (1 << 2) /* IRQ: Match */
+#define DMT_IRQ_MASK (DMT_IRQ_TCAR | DMT_IRQ_OVF | DMT_IRQ_MAT)
+#define DMT_TCLR 0x38 /* Control Register */
+#define DMT_TCLR_START (1 << 0) /* Start timer */
+#define DMT_TCLR_AUTOLOAD (1 << 1) /* Auto-reload on overflow */
+#define DMT_TCLR_PRES_MASK (7 << 2) /* Prescaler mask */
+#define DMT_TCLR_PRES_ENABLE (1 << 5) /* Prescaler enable */
+#define DMT_TCLR_COMP_ENABLE (1 << 6) /* Compare enable */
+#define DMT_TCLR_PWM_HIGH (1 << 7) /* PWM default output high */
+#define DMT_TCLR_CAPTRAN_MASK (3 << 8) /* Capture transition mask */
+#define DMT_TCLR_CAPTRAN_NONE (0 << 8) /* Capture: none */
+#define DMT_TCLR_CAPTRAN_LOHI (1 << 8) /* Capture lo->hi transition */
+#define DMT_TCLR_CAPTRAN_HILO (2 << 8) /* Capture hi->lo transition */
+#define DMT_TCLR_CAPTRAN_BOTH (3 << 8) /* Capture both transitions */
+#define DMT_TCLR_TRGMODE_MASK (3 << 10) /* Trigger output mode mask */
+#define DMT_TCLR_TRGMODE_NONE (0 << 10) /* Trigger off */
+#define DMT_TCLR_TRGMODE_OVFL (1 << 10) /* Trigger on overflow */
+#define DMT_TCLR_TRGMODE_BOTH (2 << 10) /* Trigger on match + ovflow */
+#define DMT_TCLR_PWM_PTOGGLE (1 << 12) /* PWM toggles */
+#define DMT_TCLR_CAP_MODE_2ND (1 << 13) /* Capture second event mode */
+#define DMT_TCLR_GPO_CFG (1 << 14) /* (no descr in datasheet) */
+#define DMT_TCRR 0x3C /* Counter Register */
+#define DMT_TLDR 0x40 /* Load Reg */
+#define DMT_TTGR 0x44 /* Trigger Reg */
+#define DMT_TWPS 0x48 /* Write Posted Status Reg */
+#define DMT_TMAR 0x4C /* Match Reg */
+#define DMT_TCAR1 0x50 /* Capture Reg */
+#define DMT_TSICR 0x54 /* Synchr. Interface Ctrl Reg */
+#define DMT_TSICR_RESET 0x02 /* TSICR perform soft reset */
+#define DMT_TCAR2 0x48 /* Capture Reg */
struct am335x_dmtimer_softc {
struct resource * tmr_mem_res[AM335X_NUM_TIMERS];
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