ARM: OMAP: Port dmtimers to OMAP2 and implement PWM support

Port dmtimer framework to OMAP2.
Modify the dmtimers API to support setting of PWM configuration and prescaler.
Convert 32 kHz timer and GP timer to use the dmtimer framework.

Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 33 insertions, 46 deletions

diff --git a/include/asm-arm/arch-omap/dmtimer.h b/include/asm-arm/arch-omap/dmtimer.h
index e6522e6a3834..5b58e3d62742 100644
--- a/include/asm-arm/arch-omap/dmtimer.h
+++ b/include/asm-arm/arch-omap/dmtimer.h
@@ -5,6 +5,7 @@
  *
  * Copyright (C) 2005 Nokia Corporation
  * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
+ * PWM and clock framwork support by Timo Teras.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -25,69 +26,55 @@
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#ifndef __ASM_ARCH_TIMER_H
-#define __ASM_ARCH_TIMER_H
-
-#include <linux/list.h>
-
-#define OMAP_TIMER_SRC_ARMXOR		0x00
-#define OMAP_TIMER_SRC_32_KHZ		0x01
-#define OMAP_TIMER_SRC_EXT_CLK		0x02
-
-/* timer control reg bits */
-#define OMAP_TIMER_CTRL_CAPTMODE	(1 << 13)
-#define OMAP_TIMER_CTRL_PT		(1 << 12)
-#define OMAP_TIMER_CTRL_TRG_OVERFLOW	(0x1 << 10)
-#define OMAP_TIMER_CTRL_TRG_OFANDMATCH	(0x2 << 10)
-#define OMAP_TIMER_CTRL_TCM_LOWTOHIGH	(0x1 << 8)
-#define OMAP_TIMER_CTRL_TCM_HIGHTOLOW	(0x2 << 8)
-#define OMAP_TIMER_CTRL_TCM_BOTHEDGES	(0x3 << 8)
-#define OMAP_TIMER_CTRL_SCPWM		(1 << 7)
-#define OMAP_TIMER_CTRL_CE		(1 << 6)	/* compare enable */
-#define OMAP_TIMER_CTRL_PRE		(1 << 5)	/* prescaler enable */
-#define OMAP_TIMER_CTRL_PTV_SHIFT	2		/* how much to shift the prescaler value */
-#define OMAP_TIMER_CTRL_AR		(1 << 1)	/* auto-reload enable */
-#define OMAP_TIMER_CTRL_ST		(1 << 0)	/* start timer */
+#ifndef __ASM_ARCH_DMTIMER_H
+#define __ASM_ARCH_DMTIMER_H
 
-/* timer interrupt enable bits */
-#define OMAP_TIMER_INT_CAPTURE		(1 << 2)
-#define OMAP_TIMER_INT_OVERFLOW		(1 << 1)
-#define OMAP_TIMER_INT_MATCH		(1 << 0)
+/* clock sources */
+#define OMAP_TIMER_SRC_SYS_CLK			0x00
+#define OMAP_TIMER_SRC_32_KHZ			0x01
+#define OMAP_TIMER_SRC_EXT_CLK			0x02
 
+/* timer interrupt enable bits */
+#define OMAP_TIMER_INT_CAPTURE			(1 << 2)
+#define OMAP_TIMER_INT_OVERFLOW			(1 << 1)
+#define OMAP_TIMER_INT_MATCH			(1 << 0)
 
-struct omap_dm_timer {
-	struct list_head timer_list;
+/* trigger types */
+#define OMAP_TIMER_TRIGGER_NONE			0x00
+#define OMAP_TIMER_TRIGGER_OVERFLOW		0x01
+#define OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE	0x02
 
-	u32 base;
-	unsigned int irq;
-};
+struct omap_dm_timer;
+struct clk;
 
-u32 omap_dm_timer_read_reg(struct omap_dm_timer *timer, int reg);
-void omap_dm_timer_write_reg(struct omap_dm_timer *timer, int reg, u32 value);
+int omap_dm_timer_init(void);
 
-struct omap_dm_timer * omap_dm_timer_request(void);
+struct omap_dm_timer *omap_dm_timer_request(void);
+struct omap_dm_timer *omap_dm_timer_request_specific(int timer_id);
 void omap_dm_timer_free(struct omap_dm_timer *timer);
-void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
 
-void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value);
-void omap_dm_timer_set_trigger(struct omap_dm_timer *timer, unsigned int value);
-void omap_dm_timer_enable_compare(struct omap_dm_timer *timer);
-void omap_dm_timer_enable_autoreload(struct omap_dm_timer *timer);
+int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
+
+u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
+struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer);
 
 void omap_dm_timer_trigger(struct omap_dm_timer *timer);
 void omap_dm_timer_start(struct omap_dm_timer *timer);
 void omap_dm_timer_stop(struct omap_dm_timer *timer);
 
-void omap_dm_timer_set_load(struct omap_dm_timer *timer, unsigned int load);
-void omap_dm_timer_set_match(struct omap_dm_timer *timer, unsigned int match);
+void omap_dm_timer_set_source(struct omap_dm_timer *timer, int source);
+void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, unsigned int value);
+void omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match);
+void omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, int trigger);
+void omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler);
+
+void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value);
 
 unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer);
 void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value);
-
 unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer);
-void omap_dm_timer_reset_counter(struct omap_dm_timer *timer);
 
 int omap_dm_timers_active(void);
-u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
 
-#endif /* __ASM_ARCH_TIMER_H */
+
+#endif /* __ASM_ARCH_DMTIMER_H */